50272- 101
REPORT DOCUMENTATION
          PAGE
                              1.REPORT NO.
                                                                                               3. Recipient's Accession
4. Title and Subtitle
   Water Resources Information: Literature and Data Review
   Santa Cruz County, Arizona
5. Report Date
  Completed January 1990
7. Author(s)
            Mark Coggeshall and Carol Babel
                                                                                               8. Performing Organization RepL No.
9. Performing Organization Name and Address
             University of Arizona
             Department of Hydrology and Water Resources
             Tucson, AZ 85721
10. ProjecVTask/Work Unit No.
11. Contract(C) or Grant(G) No.

(C)

(G)
12. Sponsoring Organization Name and Address
U.S. Environmental Protection Agency
Office of Cooperative Environmental Management
499 South Capitol Street, SW A-101-F6
Wasington.DC 20460
13. Type of Report ft Period Covered

  Final Report
14.
15. Supplementary Notes
16. Abstract (Umtt: 200 words)
The Upper Santa Cruz River Basin is one of the major river drainages in Southwestern Arizofia that has a component flow originating
in Mexico. The water quality and quantity of this flow across the international boundary, both surface and subsurface, is of some
concern to local, state and federal agencies. This report is a review of all available information on the Upper Santa Cruz River Basin
from the international boundary to the Santa Cruz/Pima County line.  The report serves as a reference tool from which the user can
extract and further scrutinize the information contained within. The structure of the report is such that the reader can pursue
information either by subject or author.
17. Docuement Analysis a. Docuement Otscnptors
 b. Identifiers/Open-Ended Terms
c. COSATI Field/Group
 18. AvallabliUty Statement
                                                                         19. Security Class (This Report)
                                                                            Unclassified
                                                                         20. Security Class (This Page)
                                                                            Unclassified
             21. No. of Pages
                                                                                                            22. Price
 (See ANSI-Z39.18)
                                                                                                           OPTIMAL FORM 272 (4-77)
                                                                                                           (Formerly NTIS-35)
                                                                                                           Department of Commerce

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         WATER RESOURCES INFORMATION:  LITERATURE AND DATA REVIEW
                        SANTA CRUZ COUNTY, ARIZONA
                                    for
              UNITED  STATES  ENVIRONMENTAL  PROTECTION AGENCY
                                    by
                            MARC C. COGGESHALL
                              CAROL A. BABEL
                              July 25,  1989
(CMJ
a
to

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                           DISCLAIMER                   .._

This report  was furnished to  the  U.S.  Environmental Protection
Agency by  the  graduate  student identified on the cover  page, under
a National Network for  Environmental  Management  Studies
fellowship.

The  contents are essentially as  received from  the  author.  The
opinions, findings,  and conclusions  expressed  are  those  of the author
and  not necessarily  those of the U.S. Environmental  Protection
Agency.  Mention,  if any, of company, process, or product names is
not to be considered as an endorsement  by the  U.S.  Environmental
Protection  Agency.

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                        TABLE OF CONTENTS

                                                             PAGE

INTRODUCTION	     i

PURPOSE AND SCOPE	   ii

LOCATION OF STUDY AREA	   ii

DISCUSSION	  iii

GENERAL	     1

 Location/General Information	     2
 Climate	     8
 Population	   13
 Land use	   15

GEOPHYSICAL CHARACTERISTICS	   19

 Geologic Setting	   20
 Topography	   37

WATER RESOURCES	   42

 Surface Water	   43
 Groundwater	   56
          Hydrogeologic Setting	   57
          Aquifer Properties	   74
          Well Information	   78

WATER QUALITY	   87

 General Water Quality Information	   88
 Surface Water Quality/Inorganic and Organic	   95
 Groundwater Quality/Inorganic Chemical Characteristics	  105
 Groundwater Quality/Organic Chemical Characteristics	  130
 Microbiological Characteristics	  151

WATER SYSTEMS	  154

 Water Use	  155
 Waste Water Systems	  160
 Distribution Systems	  168

BIBLIOGRAPHIC REFERENCE	  175

 Sorted by Reference Number	  176
 Sorted by Author Name	  199

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                         LIST OF FIGURES

                                                              PAGE

Figure 1.  Location of Study Area	    iv

Figure 2.  Taxonomic Structure	    v

Figure 3.  Sub-directory Structure for
           Included WordPerfect 4.1
           Disk	  xiv

Figure 4.  Contacts Listing	    xv
Plate  1.  Regional Setting of Study Area 	  In
                                                           Pocket

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                          INTRODUCTION




     The Upper Santa Cruz River Basin is one of the major  river




drainages  in  Southern  Arizona  that  has a  component  of  flow




originating in Mexico.   The water quality and quantity  of  this




flow across  the  International  Boundary,  both  surface  and  sub-




surface,  is  of  some  concern  to local, state,  and  federal




agencies.  As a first  step  towards addressing these concerns, a




thorough consideration  of all  available  investigations,  reports,




raw  data,   and  other  pertinent  information is  needed.    This




consideration  requires  the  information to  be  located,




bibliographically  referenced,  and sorted  into  a  taxonomic




structure so  as  to act  as a  preliminary  basis  for  further




investigations.




     This report  is a  review of all  available information on the




Upper Santa Cruz River Basin from the International Boundary to




the  Santa  Cruz/Pima  County   line.    The report  serves  as a




referencing tool from  which the  user  can extract and  further




scrutinize  the information  contained within.   The structure of




the report  is  such  that a reader can pursue information either by




subject or  author.




     The report has  an open ended structure allowing additions to




the references as new  information  becomes  available.  The report




is written in Word  Perfect 4.1 and is contained on floppy  disks




for addition and review  of  the data  base and/or duplication of




any sections.

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                        PURPOSE AND  SCOPE




     The purpose  of this  report  is  to  organize the  available




water resources type information  for  the  Upper .Santa Cruz River




Basin and act as  a  referencing tool for further investigations.




Because water resource  information for  the Upper  Santa Cruz River




Basin is found  from many different  sources,  no current central




referencing tool has the ability to  locate all  of the information




available.   This  report  attempts  to be this central referencing




tool,  summarizing  the  available  information,  organizing  the




information  into  a  taxonomic  structure,  and providing




bibliographic references.   No interpretations  of  the  data  are




made and the validity of  referenced  information  is not addressed.









                     LOCATION OF  STUDY AREA




     The study  area consists  of Santa  Cruz  County,  Arizona




(Figure 1,  Plate  1).    The  Upper  Santa Cruz  River  Watershed is




wholly contained inside Santa Cruz County.   Because  the focus of




the report is the Upper Santa Cruz River Basin and the fact that




no  other  major  watersheds  are contained  in  the county,  it's




boundaries  were  chosen  to be those of  the study  area.




     Initially the  portion  of  the Upper Santa  Cruz  River Basin




contained in  Mexico was to  be included  in the  study  area  as a




focus of  this report.    However,  due  to  a  lack of available




information pertaining  to  water   resources  in  Mexico,  only  the




area North  of the  International Boundary was included.

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                           DISCUSSION




     This discussion  focuses  on the  use of  the report.    The




information contained  within  is  a  summary of  previous  work




including reports,  raw data, and  personal contacts all referenced




bibliographically.




     The taxonomic  structure in which the information was sorted




can be seen in figure 2.  The  four  basic  sections  of the report




are  General  Information,  Geophysical  Characteristics,  Water




Resources,  Water Quality,  and Water  Systems.    Each  section




contains sub-sections  into which  subjects fall.




 In  the  General  Information section,   sub—sections  include  a




discussion  of locations, population, climate, and  land  use.   In




the Geophysical  Characteristics section, sub-sections are broken




into  geologic  setting  and topography.   The  Water  Resources




section  of  the report is  broken into surface  water   and




groundwater  sub-sections.  The  groundwater sub-section is further




broken into hydrogeologic setting,   aquifer properties,  and  well




information.   A Water  Quality  section contains  general  water




quality,  surface water  quality,  groundwater  quality/inorganic,




groundwater  quality/organic, and  microbiological characteristics.




The last section of  the report.  Water  Systems,  is  divided  into




water use,  waste  water systems, and  distribution systems.




     The subject focus  of  each  section  and  sub-section can  be




seen in  figure  2.    The structure  of   the report  is such  that




figure 2 acts as a  subject  reference where the  reader  can  find




the  section  and  sub-section where  specific  desired information




may be found.
                              m

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                                                          Figure 1.  Location of Study Area
                                                                   Santa Cruz County,  AZ

^ite? ****•'»ff .^Y'^^ig^^^ly1
 yuwwywi .  A-i., uddj'^JA ;fi J  ^lw*W;f>^X%^.r^>Q*ytojeUfi»-f,-.
                                                                                                        P4%qu^i-:- «.wf^' -^ $••
                                                                                                        *#£E$^ 'V^-Ct??-^-
                                                                                                                                                             -•*
                  Scale  1:250,000

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                 Figure  2.   Taxonoraic  Structure
General:
1 - Location/General Information
 delineate boundaries
 regional setting
2 - Population
3 - Climate
 temperature
 precipitation
 wind
 evaporation
k — Land use

Geophysical Characteristics;
1 - Geological setting
 regional
 site specific
 geologic units
 soils
2 - Topography
 watershed description and geography
 drainage areas
 inflow areas
 slope
 relief
 anthropogenic effects

Water Resources:
1 - Surface Water
 water rights info
 water sources
 water withdrawals
 water budget
 lake or reservoir water surface elevation
 irrigation
 recharge (artificial)
 canals
 surface area
 flow velocity
 discharge (average, low, peak, seasonal variation)
 flood and drought records
2 - Groundwater
 A) Hydrogeologic setting
      hydrologic units
      groundwater-surfacewater interaction
      recharge-discharge
      regional water levels

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 Figure 2.  Taxonomic Structure continued.

B) Aquifer properties/Basin characteristics
     rock type
     permeability
     transmissivity
     hydraulic conductivity
     storage properties
          specific yield (unconfined)
          storage coefficient (confined)
     groundwater flow directions
          historical
          recent
     aquifer type
          confined
              piezometric head
              confining layer type and conductance
          unconfined
              elevation of water table
              depth to water
          perched
C) Well Information
     location
     well numbering systems
          Arizona Department of Water Resources
     owner or user
     date of observation
     year completed
     depth
     well type
     well diameter
     type of pump and power
     measuring point
     altitude
     water level
     yield
     use
     drillers logs of wells
          material
          thickness
          depth
          formation
     pumping test data
          pumping rate (discharge)
          static water level
          drawdown
          specific conductance
          transmissivity
          hydraulic conductivity
          storage properties
     development
          pumpage
          yield
          specfic capacity

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Figure 2.  Taxonomic Structure continued..

Water Quality;
1 - General Water Quality Information
2 - Surface Water Quality /Inorganic and Organic Characteristics
3 - Groundwater Quality /Inorganic Chemical Characteristics
 A) Physical Parameters
      temperature
      color
      turbidity
      odor
      taste
      electrical conductivity
      pH
      total dissolved solids
      total suspended solids
 B) Major ionic species
      calcium
      magnesium
      sodium
      potassium
      bicarbonate
      sulfate
      chloride
      nitrate
 C) Minor ionic species
      aluminum
      ammonium
      arsenic
      barium
      boron
      copper
      iron
      manganese
      bisulfate
      carbonate
      fluoride
      hydroxide
      phosphates
      sulfide
      sulfate
          zinc
 D) Nonionic species
      silica
                                VII

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  Figure 2.  Taxonomic Structure continued.

Groundwater Quality / Inorganic Characteristics continued.

 E) Trace metals
      arsenic
      barium
      cadmium
      chromium, total
      chromium, hexavalent
      lead
      mercury
      selenium
      silver
      tin
      aluminum
 F) Nutrients
      nitrogen
           organic nitrogen
           ammonia
           nitrite
           nitrate
           urea
           nitrogen gas
      phosphorus
           ortho phosphates
           poly phosphates
 G) Radioactivity
      gross alpha particles
      gross beta particles
      radium 226
      radium 228
      combined radium
      combined uranium
 H) Special parameters
      alkalinity
      hardness
      corrosivity
      foaming agents
      beryllium
      cobalt
      lithium
      molybdenum
      vanadium
      cyanide
      antimony
      thallium
      nickel
                                vm

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  Figure 2.  Taxonomic Structure continued.

4 - Ground Water Quality /Organic Chemical Characteristics
      A) Volatile Organics
      bromodichloromethane
      bromoform
      bromomethane
      carbon tetrachloride
      chlorobenzene
      chloroethane
      2-chloroethylvinyl ether
      chloroform
      chloromethane
      dibromochloromethane
      1,2-dichlorobenzene
      1,4-dichlorobenzene
      1,3-dichlorobenzene
      1,1-dichloroethane
      1,2-dichloroethane
      1,1-dichloroethene
      trans-1,2-dichloroethene
      I,2-dichloropropane
      cis-1,3-dichloropropene
      trans-1,3-dichloropropene
      methylene chloride
      1,1,2,2-tetrachloroethane
      tetrachloroethane
      1,1,1-trichloroethane
      1,1,2-trichloroethane
      trichloroethane
      trichlorofluoromethane
      vinyl chloride
      2—chloroethylvinyl ether
      trans-1,2-dichloroethene
      benzene
      ethylbenzene
      toluene
      xylenes, total
      bromobenzene
      chlorodibromomethane
      o-chlorotoluene
      p—chlorotoluene.
      dibromomethane
      m-dichlorobenzene
      o—dichlorobenzene
      trans-1,2-dichloroethylene
      cis-1,2-dichloroethylene
      dichloromethane
      1,1-dichloroethane
      1,1-dichloroethane
      1,1-dichloropropene
                                IX

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  Figure 2.  Taxonomic Structure continued.

Groundwater Quality / Volatile Organics continued.

      1,2-dichloropropane
      1,3-dichloropropane
      1,3—dichloropropene
      2,2-dichloropropane
      ethylbenzene
      styrene
      tetrachloroethylene
      1,2,3-trichloropropane
      toluene
      ethylene dibromide
      1,2-dibromo-3-chloropropane
      bromochloromethane
      n-butylbenzene
      dichlorodifluoromethane
      fluorotrichloromethane
      hexachlorobutadiene
      isopropylbenzene
      p-isopropyltoluene
      napthalene
      n-propylbenzene
      sec-butylbenzene
      tert-butylbenzene
      1., 2,3-trichlorobenzene
      1,2,4-trichlorobenzene
      1,2,4-trimethylbenzene
      1,3,5-trimethylbenzene
 B) Synthetic Organics
      endrin
      lindane
      methoxychlor
      toxaphene
      2,4-D
      2,4,5-TP Silvex
 C) Total Trihalomethanes  (TTHM)
 D) TOG (total organic carbon)

5 - Microbiological Characteristics
 A) total coliforms
 B) fecal coliforms
 C) specific pathogens
 D) viruses
     E) COD (chemical oxygen demand)
 F) DO (dissolved oxygen)
 G) BOD (biological oxygen demand)
 H) total suspended solids
 I) settleable solids
 J) total residual chloride

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  Figure 2.  Taxonomic Structure continued.

Water Systems;
1 - Water Use
 flow (daily and seasonal variations)
 residential use
 industrial use
 agricultural use
 commercial use
 municipal use
 water importation
 water diversion
2 - Waste Water Systems
 Collection system
      intake
      capacity
      current demand
      intake water quality
      current flows
      seasonal variation
 Treatment system
      treatment processes
      chemical additions
      effluent quality and characteristics
      flows and loads
3 - Distribution Systems
 surface
 subsurface
 conveyance losses
 capacity of lines
 current flows (daily and seasonal)
 storage requirements and capacity
 sources of supply

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     In  the  back of  the report  is  the bibliographic reference




which is  numbered in  accordance  with the summarized information




in  the body.  The bibliographic reference is sorted in two ways;




1)  By report reference number.   The  reader  finds the subject of




interest in one of the sections or sub-sections  of  the report and




notes  the  report  reference number  preceding _. the  desired




information.   The  reader  looks  in  the  first  bibliographic




reference section which  is  sorted  by reference  number  and finds




bibliographic  information on  the  desired information.   The




reference numbers  preceded  by   an  "r",  emphasize  the  water




quality,  water systems,   and  geology of  Santa  Cruz  County,




Arizona.    Limited  information about  the  other   sections  in  the




taxonomic structure  are also included in the "r"  references.  The




numbered  references  without an "r"  preceding  the number  contain




information on  every  section  in  the taxonomic structure  except,




the water quality section.   2)  By Author.   The  reader starts in




the  second  Bibliographic Reference  Section  which is  sorted  by




author last  name,  and notes  the  appropriate reference   number




preceding the author.   The reader then finds this same reference




number in the sections and  sub-sections  in the body of the report




and scans the available information by that author.




     The  report is written  in  WordPerfect 4.1 and is contained on




the floppy disk included  with the report.   Each section and sub-




section of the  report  is  found in  it's own sub-directory.   A tree




listing of the sub-directories is shown  in figure 3.  The report




is  written with  the  ability to be expanded as  more information
                                XII

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becomes  available,  one  simply  adds  information into  the




appropriate  section and reference.




     A majority of the information found in the report is  readily




available,  some references  require  special  permission  to be




viewed  and  are  noted  as  such in  the  reference  section.   A




contacts listing  is found in  figure  4.    This  figure  represents




the  most recent  listing  of  the persons,  firms,  groups,  and




government  agencies where information is or can be found  for the




study area.   Many of these sources were contacted  for  this report,




and where known, a  contact  name, phone number,  and address is




given.
                              xm

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       REFERENC.NUM
       REFERENC.ALP —
       GEN-INFO.
   LOCAT.
   POP.
   CLIMATE.
   LANDUSE,
    — GEO-CHAR.
   GEOSET.
   TOPOG.
       WATER-RE.  ®-
   SURFACE.
   GROUND.
                                                      — AQPROP.
                                                      — WELLS.
                                                      — HYDSET.
   	 WATER-QA.
                              ®_
   GENERAL.
— SURFACE.
— INORGAN.
— ORGANIC.
— MICRO.
       WATERSYS.  —
   USE.
   DIST.
   WASTEH20.
Figure 3.   Sub-Directory Structure and Names for
           WordPerfect 4.1  Disk Included.
                                XIV

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                   Figure 4.  Contacts Listing.
1. EPA:  Ginger Wandless / 202-475-9477
         Doug Newman / technical contact 202-475-6139

2. USGS: Richard Wilson (groundwater)  (602) 629-6850
         Barbara Favor (librarian)  (602) 629-6197
         George Smith (maps and drafting)  (602) 629-6189
         300 W. Congress St., Tucson, AZ  5th floor

3.   Arizona Geological Survey:  Tom McGarvin, Geologist
     845 North Park, Tucson, AZ  (602) 882-4795

4.    Pima Association Of Governments (PAG):  Michael Block
                                             Richard Grimaldi
      177 North Church, Tucson, AZ            (602) 792-1093

5.    Department of Environmental Quality (Tucson Office):
      Jim Maston,  (602) 628-5321

6.    Southeast Area Association of Governments (SEAGO):
      Joyce Hopmeier
      Bisbee, AZ   (602) 432-5301

7.    Tucson Water, Quality Dept.:Elizabeth Davis (602) 791-2588

8.    National Park Service:  George Teag  (602) 629-6501
      Tucson, AZ
9.    Arizona Department of Environmental Quality:
      2005 North Central, Phoenix, Az. 85004
      -Ron Miller, Assistant Director
      -Ed Swanson, Permits Unit
      -Wayne Hood, Hydrology
      -Bill Engstrum, Permits Unit
      secretary—Joyce
      -Roger Kennett, Permits Unit
      -Sandra Eberhardt
      —Lauren Evans
      -Gayle Clement, Hydrology
      -Jean Marie Haney, Hydrology
      -Sue Monroe, Emergency and Remedial Setion
      -Donna Nelson, Hydrology
      -Jon Dahl, Manager Drinking Water Compliance
           Office of Water Quality               (602)
           secretary—Audrey
      -Mary Alice Waldrip, librarian             (602)
(602)
(602)
(602)
(602)
(602)
(602)
(602)
(602)
(602)
(602)
(602)
257-2305
392-4044
257-2103
257-2270
257-2270
257-6841
257-6841
257-2123
257-2117
257-6939
257-2111
257-2201
257-6959
                                XV

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Figure 4.  Contacts Listing continued.

10.  The Earth Technology Corporation:
     2411 W. 14th Street, Suite 210, Tempe, AZ 85281
     Sharon Lagas, Geologist; Project Manager Nogales Project
     (602) 894-9466

11.   Arizona Department Of Water Resources (ADWR):  Tucson AMA
      310 S. Meyer Av.   (602) 628-5858
      -Kathy Jacobs (Director)
      -Linda Stitzer (Nogales specialist)
      -Pat Spier (computer records search)
      —Virginia Wellford (private water companies Santa Cruz Co)
      -Mike Caparaso (agricultural water issues)
      -Jeffrey Tannler (computer records search)
      -Palcido Dos Santos (water resources study Santa Cruz Co.)

12.  Arizona Dept. of Water Resources, Hydrology,
     Phoenix, AZ   (602) 452-1586
        -Doug Toy (Director)  (602) 542-1708
        -Bill Remick (Basic Data Section)  (602) 255-1543

13.   Ken Schmidt and Associates
      Phoenix, AZ
      Jim Angel, Hy.drologist  (602) 279-7033
      (well sampling program conducted by this firm, for the
      IWWTP expansion project)

14.   Greeley - Hanseri Engineers
      Phoenix, AZ
      (work on the IWWTP expansion project)

15.  US Soil Conservation Service
     Tucson Office  (602) 269-6602

16.   International Waste Water Treatment Plant  (IWWTP)
      Lino Vega  (602) 281-0873

17.   International Border and Water Commission (IBWC)
      El Paso, TX
      Tom Wooton  (915) 534-6704

18.   Santa Cruz County Health Department
      Chris Stewart  (602)  287-4901

19.   Valle Verde Water Company
      Frank Randall

20.   National Weather Service (Department of Commerce)
      7010 S. Plummer Av.,  Tucson, Az.
      (602) 294-2522
                                xvi

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Figure 4.  Contacts Listing continued.

21.   US Census / Arizona Department of Economic  Security
             Population Statistics Unit
             Division of Planning and Policy Dept.
             1717 West Jefferson, Phoenix, AZ
             (population projections for the state  of Arizona)
22.  U. S. Army Corps of Engineers
     Harley Grovener   (602) 241-2018

23.  City of Nogales
       -Gene Fontes  (City Engineer)       (602)  287-6571
       -Ken Horton  (Department of Water)  (602)  287-6571

24.  Cella Barr Associates
     2075 N. 6th Ave., Tucson, Az. 85705
     (602) 624-7401

25.   Collins-Pina Consulting Engineers Inc.
      2424 E. Brdwy, Suite 114
      Tucson, Az. 85719

26.   Paul G. Sebnick and Associates
      1201 West Vista Ave., Phoenix, AZ
      (1987 performed a well inventory for the City of Nogales)

27.  Leonard C. Halpenny
     Water Development Corporation
     3938 Santa Barbara Ave., Tucson, Az.  85711
     (602) 327-7412

28.  Santa Cruz County Flood Control District
    - Box 818, Nogales, AZ  85628
     Ken R. Zehentner  (Deputy Director)

29.  Dr. Harshbarger, University of Arizona,  (602) 299-5979

30.  Cooperative Extension Service,  College  of  Agriculture,
     University of Arizona, Tucson AZ
     Robert Casler  (Agricultural Communications)   (602) 621-7178
     715 N. Park, in the Campus Christian Center  2nd floor.

31.  Arizona Water Resources Research Center
     Department of Hydrology and Water Resources
     University of Arizona, Tucson,  AZ  85721
     Debbie Weller  (Librarian)
     (602) -621-7607

32.  Woodward-Clyde Consultants
     Walnut Creek, CA
     Carolyn Kneiblher
                                XV ii

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GENERAL

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LOCATION/GENERAL INFORMATION

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[6]
Location  of  study area  described  (International Border  area to
Guebabi Narrows Section 22, Township  23 south, Range 14 East)
(p 15).

[7]
City  of  Nogales,  Town  and Country  Terrace,  Valle  Verde,  Tubac
Valley, and Rio Rico background information as  a water providers
described.

[17]
Location of the RMH&S Water Company is described
(p 1-4, maps 1-4).

[21]
Study  area  of this water-rights  study described.   Included are
all lands within the City  of  Nogales Water Service  Area  as  well
as other lands surrounding this service area (p 2).

[24]
Location  and  boundries  for The  Nogales Wash/Potero  Creek  Study
Area defined (p 2-1).

[25]
Study  area defined for  this report.   In general reported as the
Santa  Cruz  River  Valley  from the International Border  to  the
mouth of Sonoita Creek,  (p 5-6, 8,  plate 1).

[29]
General current and historical profile for  Santa Cruz County, AZ
(p 5-6).

[29]
Profiles  for  each  community  in  Santa  Cruz  County,   Az.
Information on the following communities included:
-Patagonia,  Sonoita,  Tubac, Carmen, Tamacacori.
 topography
 socio-economic
 land use
 water supply
 water use
 sewage and  waste water  treatment
 solid waste  disposal
(p 25-54,  plates  10-23).

[35]
Location   and  general  topographical  information  for the  Sonoita
Creek Basin,  Santa Cruz  County, Arizona is  described (p 1-3).

-------
[70]
Map  showing  vegitation in the  Tucson area including  Santa  Cruz
County.  Information includes:
-Types and locations of vegitation including;
  Evergreen Conifer forest.
  Evergreen woodlands.
  Grasslands.
  Chihuahuan desert.
  Sonoran desert.
-Expantions of each type.
(Sheet „!).

Crl]
Location of the Nogales Wash study area is described,   .(p 8)

[r4]
Map showing water sampling locations done in this  report.  (p 3)

Crl2]
The location  of  the IWWTP and  vicinity,  study area,   defined  by
Ken Schmidt  and  Associates  is described.   Major  communities  in
the  study  area,  the  regional  setting  of the  study  area,  land
surface elevations  along  the  floodplain in the  study area,  and
major tributaries in the study area are discussed.  A map of the
study area is included.  (p  5-6,  figure 1)

[r27]
Discussion  of  the location  of the  C.  G.  Conn  (Artley  Flute)
Plant, including  property  constraints,  and a  location  map.
Included  is  a  description  of  the  United  Musical  Instrument
Plant's four  hazardous waste management  units (unlined  surface
impoundment,  underground  concrete  pH tank,  2  land  treatment
areas).

Cr29]
Location map of the facility and the area around the facility (C.
G. Conn)  are given in section 1.0 of the report.

[r30]
Site location is described and a location map  is given.
(p 2-1, 2-2)

[r31]
In section 1.0 of this  report there is a  site description of the
C. G. Conn Facility.  Figure  1-1 is a location map and Figure 1-2
is a 5* contour map of C.  G.  Conn Facility and surrounding area.
Figure 1-9 is a map that shows  the location of phase I monitoring
wells.

-------
[r33]
The location of  Artley  Flute  facility  is given, the address and
the township, range,  and section are  included.
(p. 5, appendix A-9,  A-13)

[r34]
The  study  area  includes  southern and central  Arizona.   The
boundaries of the study area  are  shown  in figure 69.  The  study
area is divided  into generalized categories, of  which Santa Cruz
County is  included  in  the central region.   Figure  74  is  a map
showing the regional  category  boundaries.
(p 117,122,123)

Cr35]
This report includes  the area  south and  east  of  Tucson, Arizona.
The exact  area of the  study  is shown in  Figure  1,  index map of
the area.
(p 1-2)

Cr37]
The  thesis area  is  bounded  to the  north and  the  south by two
political  boundaries,  the  Santa Cruz  County line,   and the
International.  Border  with  Mexico,  respectively.    The eastern
boundary is  the  Santa  Rita   Mountains,  Grosvenor  Hills,  San
Cayetano Mountains,  and  intrusives in the  Nogales area.   The west
boundary  is the rugged  Paj.arito,  Atascosa,  and Tumacacori
Mountains.   A  description of  the  area  and previous work done in
the area are discussed.
(p 2-5)

[r38]
The exact location of the Ruby-Pena  Blanca study area covered in
this thesis is  shown  in  figure  1 and  discussed on page 1.

[r39]
The  location  of the  study  area  in   the  northern Tumacacori
foothills is shown in figure 5.
(p 3-5)

[r^O]
Location of  the   study  area  is  shown  in figure  1.   The  south
portion of the study area extends into  a small  portion  of Santa
Cruz County.
The area discussed  in  this  paper is part of the Coronado National
Forest and lies about 15 miles west-northwest  of Nogales, Santa
Cruz County,  Arizona.   The exact  location and extent of the area
is shown in Figure  1 .
(p 1-2)

-------
[r44]
Boundaries of the Buena Vista study area are described, (p 15).

[r45]
The study area  consists of  the  part  of Santa Cruz County that is
included in the Tucson AMA, (Figure 1).

Cr46]
Location and  boundaries  of  the  Nogales  Wash  study area  are
defined, (p 2-1)

Cr51J
The location  of the  Southwest  Alluvial Basins (Swab)  study  and
the delineation of the 72 basins in the study is shown, (p 6-7)

[r52]
Project study and service area  location are defined and the study
area boundaries are delineated,  (p 3-1 to 3-4, plates 3—1, 3-2)

[r60]
Location of  the  International  Waste  Water  Treatment Plant  by
longitude and latitude is given  in the following documents:
-Groundwater Quality Protection  Permit No.  G-0006-12.
-Notice of Disposal Form,  December 1988.
-National Pollutant  Discharge  Elimination System  Permit  No.
AZ0020150. .

Cr62]
Description of the  planning  area,  includes Nogales,  Sonora,
Mexico and Nogales, Arizona, (p  2-3)

[r67]
Figure  1  is  a map of  Arizona  showing the Santa  Cruz  River,  and
the SEAGO and PAG  areas.   Figure  3  shows the  sites  in the Upper
Santa  Cruz  Basin which were  surveyed  in  April 1981.   Figure 5
shows  the  special study  areas  in  the Upper  Santa Cruz Basin
monitored during the October 1981 sampling program.  Figure  6 is
a map showing the December 1981  monitoring  sites.

[r93]
Location of Mowry Mining district, (p 1)

Cr94]
Location of the Harshaw Mining  District.  (p 3-4)

Cr95]
Location of the Tyndall Mining  District.   (p 1-3)

[r96]
Location of the Northern Canelo  Hills study area.   (p 3—4)

-------
[r97]
Location  of  the study  area  in  the  southeast end  of  the Canelo
Hills.  (p 2-4)

[r98]
Location of the study area in the eastern Canelo Hills.   (p 1-2)-

[r99]
Location of the study area in the northern Canelo Hills.  (p 1)

[rlOO]
Location map of the Cienega Creek study area.  (p 3)

[rlOl]
Location of the study area near Tubac.  (p 4)

[r!02]
Location of the Sonoita Creek Basin study area.  (p 4-5)

[rl03]
Location of the Pajafito Mountains study area.  (p 1-3)

[r!04]
Location of the study area in Santa Cruz County is described.
(p 1-2)

[rill]            .                  -
The  region  in  southeastern Arizona considered in  this report is
described.  (p 49)
Map showing the  Santa  Cruz River Basin and  subdivisions  for PAG
study area.  (p 6)
The location of the Pena Blanca and Walker Canyon areas is given.
(p 171)

-------
CLIMATE

-------
[1]
Climate described for Nogales Wash and surrounding areas
(p 38-39).

[6]
Climate  for  study  area  as  described  in  report  (See location
section under reference 6) (p 15 table 3).

[7]
Elevations and  climates  (averages  and extremes)  provided for the
City of Nogales, Vaile-. Verde, Town and Country, Tubac Valley, and
Rio Rico water providers.

[23]
Climate described for the Tucson Active Management Area including
parts of Santa Cruz County (p II-3) .
                                                    (
[24]
Climate of the  regional  area  (Southern Arizona)  and the specific
study are is disscussed (p 2-2 - 2-3).

[25]
General description of the temperature ranges of the study area
(p 9).

[29]  .
Climate and vegitation described for Santa Cruz County, AZ
(p 7-8, plate 1).

[30]
Precipitation data for The Upper Santa Cruz River Basin including
Santa Cruz County, Arizona (p A6-A8,  plate 2).

[35]
Climatological data for the Sonoita Creek Basin is presented
(p 3).

[36]
Watershed precipitation  for  the Sonoita  Creek area  including
seasonal and yearly rainfall is described (p 16-18).

[38]
Climate of  the  Santa  Cruz River  Basin described.   Information
included as follows:
-Precipitation.
-Temprature.
-Evaporation.
-Wind.
-Relative humidity.
(p 2.1-2.9)

-------
                                                                              10
[46]
Climate information  for  the Upper  Santa  Cruz  River  Valley  is
presented (p 4-4).

[51]
Climate and vegetation for Southern Arizona and the Sonoita Creek
Study Area are described (p 7-9).

[51]
Quantitative evaluation of  precipitation  and  evaporation for the
Sonoita Creek Watershed are described (p 17-18, 26-31).

[53]
The meterology of the Upper Santa Cruz and San Pedro River basins
for  October  1977  is  described.   Included is  a  discussion  of
precipitation events during this time period (p 4).

[58]
Climate data  including  information for precipitation  and runoff
for the Upper Santa Cruz River Basin is presented (p 22-24).

Crl2]
The  mean  annual  precipitation  and the  pan evaporation  for  the
IWWTP study are given,  (p 4)

Cr33]
General climate  of Nogales, Arizona is discussed,  the following
information is included:
-elevation above sea level.
-general climate type (semi-arid).
-average annual precipitation.
-rainy seasons.
-mean annual average temperature.
-annual evaporation rates.
(p 7, appendix A-9)

Cr39]
General climatic conditions  of the  northern Tumacacori foothills,
including the  average yearly temperature and the average
rainfall,  (p 4-6)

[r41]
General climatic conditions in  the Pena Blanca and Walker Canyon
area are discussed.
-general climate type.
—mean annual rainfall.
-seasons.
(p 6)

-------
                                                                              11
[r52]
The  following information about  the  climate  in the Nogales study
area is discussed:
—average annual precipitation.
-average maximum July temperature.
-average minimum January temperature.
(p 14-1, table 14-1)

[r62]
General climate  of  the  planning area  is.  discussed,  including
daily mean maximum and minimum temperatures for January and July.
(p 4)

[r70]
The  rate of evaporation for regions  and  localities in Arizona is
discussed.

[r74]
Evaporation maps for the United States.

[r80]
Map  showing the climatic regions of Arizona.

[r93]
General description of the climate in the Mowry Mine area, (p 3)

[r94]                                                        .
General description  of  the  climate and  precipitation  in  the
Harshaw Mining district.  (p 8)

[r96]
General description of the climate in the northern Canelo Hills.
(p 13-17)

[r98]
General description  of  the  climate in the eastern Canelo Hills.
(p 1-2)

[rlOl]
Climatological data  for Amado, Nogales,  Santa  Rita experimental
range and  Tumacacori National Monument is included.   A  general
discussion of the  climate  in the study area is given.
(p 5-7, appendix A)

-------
                                                                              12
This  book  contains  a  chapter  on  the climate  of Arizona.   The
following information is included:
-Arizona climate zones.  (p 35)
-soil temperature regimes.   (p 38)
-soil moisture regimes.  (p 40)
-paleoclimate.  (p 43)
-map of average annual precipitation.  (plate 5)
-map of mean January air temperature.  (plate 7)
-map of mean July air temperature.   (plate 8)
-map of actual annual evaporation.   (plate 10)
—map of average annual runoff.  (plate 13)

[r!22]
This  is  an extensive report  on the climate  of  Arizona over the
past 100 years.  It  is  compiled from records from climatological
stations  in  Arizona.   At  least 12  climatological  stations  in
Santa  Cruz  County  are  included.    The  following information  is
included:
-a summary of significant weather events  in Arizona.  (p 6—79)
-statewide temperature and moisture  trends, 1895-1983. (p 79-85)
-tables of climate means and extremes for Arizona stations,
 average daily minimum temperature.   (p 88-93)
 average temperature of the warmest  month.  (p 94—96)
 average temperature of the coldest  month.  (p 95-99)
 highest recorded temperature.  (p 100-102)
 lowest recorded temperature.   (p 103-105)               -
 average number of days with  maximum  temperature greater than
  or equal to 100 degrees,   (p 106-108)
 average number of days with  minimum  temperature less than or
 equal to 32.degrees.  (p 109-111)
 average monthly and annual precipitation.  (p 112-115)
 total precipitation in the wettest  month.  (p 116-119)
 greatest precipitation in one day.   (p 120-123)

-------
                                                   13
POPULATION

-------
                                                                              14
[1]
Population sizes and areal dispersment for the Nogales city area
(p 30).[7]

[3]
Current  population  estimates and  future growth  predictions  for
year 2020 (p 4).

[4]
Population projections for the State of Arizona (p 1-4).

[5]
Population  figures  for Nogales  Sonora,  Mexico  and  Nogales
Arizona, and number of border crossings anually (p 63).

[7]
Population estimates both past,  present,  and projected described
for City of Nogales, Town and Country Terrace, Valle Verde, Tubac
Valley, and Rio Rico as water providers.

[9]
Population estimates for the  City of  Nogales Water  Service Area.
Information includes the following:
-Tabluation of population records and projections.
-Nogales Area population served  by private water companies.
-Population forcast by pressure  zone.
(p 3-8, tables 1-3).

[19]
Population projections  by  planning  district using  the  ATOM  II,
DES II, and OBERS formulations (p 18-22).

[24]
Population growth for  Santa  Cruz County and  The  City  of Nogales
is described (p 2—16).

[r41]
Population in the Pena Blanca and Walker Canyon area is given.
(p 6-7)

[r52]
Present  population  of  the  City of  Nogales,  future  population
projections for  the  area,  and the  basic economic  background  of
the area are discussed, (p 3-5 to 3-11)

[r62]
The  estimated population  of Nogales,  Arizona in  1986 and  the
projected population for 2005 is  given.  (p 5)

-------
                                                 15
LANDUSE

-------
                                                                              16
[1]
Historical  and present land  uses  for Santa  Cruz County  and
Nogales Vicinity (p 27-32).

[1]
In  depth  land use  explanations  for Nogales  Wash Study area  as
defined in report (p 27-32).

[1]
Aerial photograph analysis of the  Nogales Wash Study area
(appendix B, p B-l -B-2,  plates  B-l - B-3).

[6]
Land  use  for  study area   (see  location  reference 6)  breifly
described (p 15 - 16).

[7]
Land  use,  housing,  and water use  described for  the City  of
Nogales Town and Country Terrace, Valle  Verde, Tubac  Valley,  and
Rio Rico water providers.

[17]
Current and  future  land  uses inside  the area now  served  by  the
RMH&S water company (p  10).

[24]
Land use including existing uses and proposed  land  use  plans  for
study area and surounding vicinities presented (p  2-16 - 2-21).

[29]
Land use and land ownership for Santa Cruz  County,  AZ.   Included
is the following information:
-Land use patterns.
-County land ownership  patterns.
-Land leases.
-Future land uses.
-General land use plans  for Rio  Rico and  Sonoita.
(p 13-17,  plates 5-9).

-------
                                                                               17
 [38]
 History  of land use and  land  ownershop for the  Santa  Cruz Basin
 is  described.   Information on  land  ownership includes:
 -Federal lands.
  Forest Service
  Bureau of  Land  Management
  National Parks  Service
  Department of Defence
 -Private lands.
.-Indian  trust  lands.
 -State of Arizona lands.
 —County  and  Municipal lands.
 -Population  characteristics.
 (p  3.1-3.6).

 [38]
 Present  land and water  use  is  described.   Information  includes
 the following:
 -Cultivation.
 -Grazing.
  Federal and  Indian lands
  Private and  state lands
 —Timber  and  wood  production.
 -Urban and industrial.
 -Outdoor recreation.
  Forest Service
  National Parks  Service                .
  Bureau of  Land Management
  Arizona State Parks
  Others
 -Open and green spaces.
 -Military.
 -Mining  production.
 -Designated  fish and wildlife.
 -Transportation and Utilities.
 -Unregulated Land development.
 (p 4.1-4.31, 5.58-5.61).

 [65]
 Map showing  land  status  in the  Tucson  area including  Santa  Cruz
 County.   Information included  as follows:
 -State trust and other state lands.
 -U.S. Forest service lands.
 -U.S. Bureu of Land Management lands.
 -National  Park Service lands.
 -U.S. Department of Defence lands.
 —Other Federal lands.
 -Private  and private trust land.
 -Indian  trust land.
 -County  and Municiple lands.
 (Sheet 1).

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                                                                               18
Cr33]
Land use  surrounding  the C. G. Conn  facility,  both existing and
proposed  is  discussed.  Most is commercial  and  light industrial,
with the  hillslopes predominantly residential.
(p 5, appendix A-9)

Cr52]
Land use  in the Nogales study area is discussed.
(p 14-9,  14-3 to 14-18)

[r62]
Land use  and zoning within  a  1/2  mile radius of the Internationl
Waste Water Treatment Plant is discussed.   (p 5)

[r67]
Figure  9  is  a map  showing  land use  in the study  area  in 1982.
The report compares land use  in the  study  area in  1973  to land
use in  the  study  area in  1982.   A  discussion of  land  use and
related activities and  their  relation to high  nitrate  levels in
the water supply is included.   (p 11-13)

[r76]
Map showing  land' use  and land  cover for Nogales,  Arizona 1972-
1973.

[r81]
Map  showing  vegetation,  croplands,  urban  and  mining  areas  for
Santa Cruz - San Pedro River Basins.

Cr83]
Map showing trust lands and national resource lands in Santa Cruz
County,  Arizona.

Crll7]
Historical and existing  land  use  for the Upper  Santa  Cruz Basin
is discussed. Table III shows land use  classes  by  area and Plate
2 is a land use map for the study area.    (p 16-20)

-------
                                                            19
GEOPHYSICAL CHARACTERISTICS

-------
                                                      20
GEOLOGIC SETTING

-------
                                                                              21
[1]
Brief  description  of  general,  geologic,  and,  hydrogeologic
setting  of Nogales  wash  study  area as  defined in  Executive
Summary and background sections of this  report (p 1-3,  8).

[1]
Regional Geology  of upper Santa  Cruz  River Valley contained  in
Santa Cruz County, AZ (p 40-41).

[1]
Geology  and  unit descriptions  for  Nogales Wash  Study Area  as
identified by report (p  41-46).

[1]
Surficial   soil  identification  for  Nogales Wash  Study Area  as
identified by report (p  47-49).

[61
Geologic setting  both regionally and specific to  the Buena  Vista
Study Area as defined by report  described.   Information included
as follows:
-Geologic units.
-Rock types
-Geologic X-sections.
(p 33 - 45, figures 7-13).

[10]                  .      -
Geologic Map of Pima and Santa  Cruz Counties,  Arizona.

[12]
Tectonic Map of Southeast  Arizona.

[24]
Geologic setting  of the  study area is  described including the
following information:
-General geology.
-Regional Seismicity and faulting.
-Soils and  foundations.
(p 2-1 - 2-2).

[25]
Geology  of  the  study  area   is  described.   Included is the
following information:
-Rock units; description and  stratigraphic  location.
-Structure.
-Geologic history.
-Geophysical profiles.
(p 11-15, plate #l-#2, appendix A).

-------
                                                                              22
[31]
The  Mesozoic  Stratigraphy  in Southeastern  Arizona  is described.
Specifically  the  stratigraphy of  the  Patagonia Mountians  and
adjoining areas are discussed (p 1-23).

[33]
Described is the Geology of the Upper Santa Cruz River Valley and
surrounding mountians  from  Nogales  to  Santa  Cruz  County  line.
Information included as follows:
-Regional setting.
—Surrounding mountain geology.
-Faulting.
-Folding.
-Structural units.
-Stratigraphic sequences.
-Inclusions.
-lithology.
-Depth to bedrock and basin structure maps
(p 6-10, figure 3, 9, 16).

[33]
General geologic history of the Santa Cruz Valley area including:
-Depositional environments.
-Uplifts.
-Faulting.
-Differential erosion.
-Volcanic activity.
(p 11-12).

[35]
General geology  for  the  Sonoita  Creek  Basin  is  described.
Information included as follows:
-Stratigraphic units and water-bearing characteristics.
-Ages of units.
-Site analysis for alluvial units.
-Structural features.
-Folding.
-Faulting.
-Jointing.
(p 7-31).

[36]
Changes  in  soil and groundwater storage are  described  for  the
Sonoita Creek  Watershed (p  22-23).

-------
                                                                              23
[37]
The Geology of  the  Cienega  Creek  Area is described.  Included is
the following information:
-Structural and stratigraphic relationships.
-Brief description of all major geologic units represented
 in the study area.
-North-South and East-West cross sections through the central
 basin lowlands of the study area.
-Geologic and depositional history of the area.
—Geomorphology of the area.
(p 7-15).

[38]
Geology of the  Santa  Cruz River  Basin is described.  Information
included as follows:
-Rock types and ages.
-Stratigraphy.
-Geologic history.
-Structural Geology.
-Mineral resources.
(p 2.13-2.16).

[41]
Generalized geologic  setting described  for the  WDC Partnership
study area.  Information includes:
-Topography and Physiography.
-Structure.                                                 .
-Geologic maps of the study area.
-Geologic units and descriptions.
(p 4-1 - 4-6).

[44]
Geologic setting  for  the Todd Ranch  and  surrounding area, Santa
Cruz County is presented.  Information included as follows:
-Topography.
-Geologic setting including;
  Description of geologic units
  Stratigraphic relation of units
-Geologic structure.
-Geologic map.
(p 4-1 _ 4-5).

[45]
Geology  of  the  Sonoita Creek  Ranch study  area  is  described.
Information included as follows:
-Geologic units and their description.
-Stratigraphic relationships of geologic  units.
-Geologic structure.
-Geologic history.
(p 6-1 - 6-4,  Plate #1).

-------
                                                                              24
[46]
Geologic setting for  The  Upper  Santa  Cruz  River  Basin  is
described,  information included as  follows:
-Geologic units in the basin and their stratigraphic
 relationships.
-Geologic history of  the basin.
-Unit by unit description.
-Sources of  material  for alluvial formations.
-Ages of Geologic units.
-Faulting in the study area.
-Depth to bedrock.
-Subsidence  of land surface.
(p 5-1 - 5-15).

[48]
A gravity survey of The Upper Santa  Cruz  River  Valley,  Santa  Cruz
County Arizona is described.   Information included as  follows:
-Residual gravity anomalities used for estimating water resource
 potential.
-Faulting in the study area.
-Structural  features  of the  area.
-Alluvial descriptions,  thickness, and areal extent.
-Total volume of groundwater  in  storage.
(p 1-58).

[51]
The  .geology  of  the  Sonoita  Creek  Watershed  is  described.
Information  included  as follows:
-General regional geologic history.
-Formation description and stratigraphic  relationships.
(p 11-16).

[67]
Map  showing  distribution  and  estimated  thickness  of alluvial
deposits in  the  Tu'cson area   including  Santa  Cruz  County.
Information  Includes:
-Thickness of alluvial deposits;
  Less then  400 feet.
  400-800 feet.
  800-1200 feet.
  Greater then 1200 feet.
(Sheet 1).

[72]
Depth  to bedrock map  basin  and  range  province  including Santa
Cruz County  Arizona.   Information includes  depth to bedrock zones
in feet and  depth to  bedrock  contours  (Sheet 1).

-------
                                                                             25
[rll]
Geologic conditions of the Nogales Wash study area are described
the following information is  included:
—regional geology
-site geology (includes description of six geological units that
 outcrop in the  Nogales Wash  study  area)
-surficial soils
 (p 10-16)

[r!2]
Subsurface  geologic  conditions  in  the  IWWTP study  area are
discussed.  The following  alluvial  deposits  are described,
Surficial Deposits  (younger alluvium),  Fort  Lowell Formation,
Tinaja  beds,  and Pantano  Formation  (Nogales Formation).   The
thickness and  physical  characteristics  of these  deposits  is
discussed  and a cross  section through the study  area  is given.
The  cross  section  is  based  on  drillers  logs for  twelve wells,
which are given  in  appendix C of  the report.

[rl5]
An  in  depth discussion  of the  geology  of  Northern  Sonora,
includes the following:
-Precambrian and Paleozoic rocks of the Caborca Region Sonora,
      Mexico.   (p  1-22)
-Geology of the  Sierra del Alamo, lithology of the Triassic and
      Jurassic sediments  in the  thesis  area is included.
 (p 23-31)
-Summary of the  Geology of the Cretaceous and Tertiary rocks in
      the state  of  Sonora,  Mexico.   (p  49-58)
-The  role  of the  Mojave-Sonora Megashear  in the  tectonic
 evolution of Northern  Sonora.   (p  59-68)
-Summary of mineral deposits  in  northern  part of the state of
      Sonora, Mexico.   (p 74-93)

[r27]
A discussion of  the geology in the vicinity of the United  Musical
Instruments  Plant,  geologic units  are  described  using  the
lithologic logs from  the  existing well  data.    Figure  5  is  a
geological cross section  through  this area.

[r33]
The following topics are  discussed:
—regional physiography.
-regional geology.
-geological units are described and locations,
 Nogales formation.
 younger alluvium.
 older alluvium.
(p. 5,6,7,9,  appendix A-9,  A-14,  A-34,  A-81)

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                                                                              26
[r343
A physical description of the  sedimentary  rocks  of  the Basin and
Range Province and a general description of  the  formation of the
Basin  and  Range  topography  is discussed.   Sedimentary  units
described are:
1- sedimentary rocks deposited prior to development  of the Basin
   and Range topography.
2- lower and upper basin  fill.
3- stream alluvium.
 (p 116-119)

[r35]
A detailed description of the tectonics of  Southeast Arizona, the
following is included:
-tectonic development
 Pre-Cordilleran orogeny  development.
 Cordilleran erogenic development.
 Post—Cordilleran orogeny development.
-major structural features,  (geometry,  dynamics,  age)
 Northwest-treading system of complex  faults.
 Thrust faults.
 Northerly treading Basin and Range  block faults.
-regional stratigraphic interpretations
 Precambrian rocks.
 Paleozoic rocks.
 Mesozoic rocks.
 Cenozoic rocks.
 (p 1-96)

[r36]
This report  is   a  description of  field trips  prepared  for  the
Geological Society  of  America,  Cordilleran  Section 1981  annual
meeting. Field  trip  number  10 explores  the  metamorphic  core
complexes in northern  Sonora  and  southern  Arizona.    Four
different  structural  levels  are discussed;  the protolith,  the
tectonite, the decollement zone,  and detachments.
(p 323-365)

Cr36]
Other field trips listed in  the  contents of  this report that may
contain  significant  information,  but that  were  not included  in
the report because they were not available  at press  time include
the following:
-Field trip #4,  Regional  Geology  of Northwestern Sonora.
-Field trip #8,  Hydrogeology of the Costa  De Hermosillo region.
-Field trip #12,  Mesozoic through early Tertiary sedimentaional
 and tectonic patterns of northeast Sonora  and southeast Arizona.

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                                                                               27
 Cr37]
 This  thesis discusses the results  of  a gravity survey  conducted
 in  the Upper Santa Cruz Valley,  residual  gravity anomalies  were
 interpreted  to define the  subsurface  structure  and to  estimate
 the water resource potential.  Discussed in  the thesis is:
 -the regional  geology of the Basin  and  Range province,  (p 6)
 -structural  geology of the mountains in the  study  area,  (p  6-9)
 -a  description of each structural unit  in  the area,  (p  6-9)
 -the geologic  rock units seen in  the study area,  (p  6-9)
 -the Nogales Formation (divided into three members),  (p  10)
 -general geologic history of the  study,  area,  (p 11-12)
 -gravity anomalies in the study area, (p 16—18)
 -free  air gravity anomaly map of  the area, (p 26-27,  figure  4)
 -complete bouguer anomaly map of  the area, (p 27-28,  figure  5)
 -regional bedrock surface map of  the area, (figure 8)
 -groundwater available from storage, (p 45—48)
 -residual aeromagnetic map of the study area,  (figure 17)

 Cr38]
 This thesis  consists  of  a  gravity survey of  the Ruby-Pena  Blanca
 area  included   is a  discussion  of  the general  geology of  this
 area.   The  following information  is included:
 -Geology of  the Ruby-Pena  Blanca  area and the Pena  Blanca-Walker
.  Canyon area.  The following formations  are discussed:
  Pajarito Lavas.
  Montana Peak  Formation.
  Atascosa Formation.
  Oro Blanca  Conglomerate.
  Pena  Blanca Conglomerate.
 -Structure of  the Ruby-Pena Blanca area.
-Structure of the Pena Blanca-Walker Canyon  area,  (p 11-16)
-Gravity anomalies in the Ruby-Pena Blanca area and the Pena
  Blanca-Walker  Canyon area,  (p 17-30)
-complete Bouguer Gravity map of  the  Pena  Blanca-Walker Canyon
  area,  (figure  5)
-complete Bouguer Gravity map of  the  Ruby-Pena Blanca area .
  (figure 3,4)
-residual gravity map of the  Pena Blanca-Walker Canyon area.
  (figure 8)

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                                                                              28
Cr39]
This dissertation  covers  the geology  of  the northern Tumacacori
foothills, the following information is included:
-Regional setting—Basin and Range Province,  (p 6-9)
-General geology, (p 10)
-Petrography of the rocks in the area, (p 11-65)
 Intrusive rocks
      quartz diorite.
      andesite dikes.
      pegmatite dikes.
      aplite dikes.
      lamprophyre dikes.
      basalt dikes.
     Extrusive rocks
      volcanics.
 Metamorphic rocks
      metaconglomerates.
      metaquarzite.
      meta-arkose.
      marble.
      hornfels.
-Metamorphism exhibited in the area, (p 66-76)
 recrystallization.
 banding.
 formation of new minerals.
 petrogenesis.
-Hydrothermal activity exhibited in the area, (p 77-118)
 Related to the quartz diorite
      orthoclasation.
      argillation.
      epidotization.
      metallization.
 Related to the volcanics.
-Structural geology of the area, (p 118-124)
-Geologic age of the rock types in the area,  (p 125-129)
-Geologic history of the area, (p 130-134)

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                                                                               29
[r40]
The purpose of this  study  was  to identify the first- and  second-
order hydrologic boundaries  in the study area  using the  gravity
method.   A discussion  of  the  geology  in the  area includes  the
following information:
—Stratigraphy and description of units
 Pantano formation.
 basin fill sediments.
 Late Pleistocene to Recent alluvium.
-Structural geology of the area.
-Alluvial thicknesses throughout the basin.
-Cross sections were used to construct a basement contour  map.
-Geologic history of the area.
-Simple bouguer gravity map of the Tucson Basin, (plate  4)
-Residual gravity map of the Tucson basin, (plate 5)
-Generlaized basement depth  contour  map  of  the Tucson Basin.
      (plate 6)
-Total intensity magnetic map of the Tucson Basin,  (plate  7)
-Geologic map of the Tucson Basin, (plate 8)
 (p 31-38)

[r41]
This  paper  includes a  discussion  of  the  following geological
characteristics of the Pena Blanca and Walker Canyon area:
-Geology of the boundary areas  (p 11-14)
 Atascosa Mountains.
 Sierra De Los Pajaritos.             .
 Eastern Foothills.
-Geology of the Pena Blanca and Walker Canyon area   (p 14-78)
 Stratigraphy
      Pena Blanca Formation.
      Atascosa Formation.
      Mountain Peak Formation.
      Oro Blanco Conglomerate.
      Pajarito Lavas.
 Cretaceous rocks
      Pjarito Lavas.
      Oro Blanco Conglomerate.
      Montana Peak Formation.  .
 Tertiary rocks
      Atascosa Formation.
 Quaternary rocks
      Pena Blanca Formation.
 Intrusive rocks.
 Possible correlations.
 Structural geology
      faulting and jointing.
      folding.
      Castle Rock and Mouse Rock.
      Whitney Mesa.
 Economic geology.
 Geologic history.

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                                                                              30
 [r47]
 This  report  contains a  soil  survey of  Santa  Cruz County.   The
 following information is included:
 -general soil map, showing soil associations.
 -description of the different soil associations in the area.
  (p 2-5)
 -each soil series is described in detail.  (p  5-48)
 -the mapping units in each soil series  is described briefly.
 -each soil series use and management is discussed.   (p 48-83)
 -formation and classification of the soils is  discussed.
  (p 48-91)

 Cr50]
 Similarities  and  differences  between  Arizona  and  Sonora
 tectonostratigraphic  evolution  and  geologic  episodes  are
 discussed, (p 72-73)

 Cr51]
 Regional setting of the Swab study  area is discussed,  (p  6)

 [r52]
 The  geology  of  the Nogales  study  area is  discussed.    The
 following information is included:
 -ranges in age of rock sequence.
 -rock units description and location.
 -geologic, features in the study area.
  (p.14-1 to 14-6)                                       .

 [r53]
 Basin structure and stratigraphy of  the Southwest Alluvial  Basins
 study area is  discussed.   The main areas of discussion include,
 pre-basin and range rocks,  lower and upper basin fill,  and  stream
 alluvium.  A generalized map  of maximum depth  to  bedrock in  the
 study area is also given,  (p 25-31)

 [r68]
 Geologic map of Mount Wrightson quadrangle.

 [r69]
 Tectonic map of Southeast Arizona.

 Cr73]
Geologic map and sections of the Nogales  and Lochiel quadrangles.

 [r75]
General soil  map for Santa  Cruz  County,  Arizona.

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                                                                              31
[r93]
Geology of  the  Mowry  Mine area  is discussed.   The  following
information is included:
-sedimentary rocks.
—igneous rocks.
-geologic structure and relationship of  structural events.
-mineral deposits.
-geologic history.
—geologic map Mowry Mine area.
-geologic cross sections of the area.
-longitudinal section Mowry Mine.
 (p 7-40)

[r94]
Geology of  the  Harshaw  Mining  District  is  discussed.    The
following information is included:
-description of exposed rock units.
-structural geology of the area.
-geologic history.
—mineralization.
 (p 11-94)

Cr95]
Geology and  ore  deposits  of   a  portion of  the Tyndall  Mining
District is discussed.  The following information is  included:
-general geology of the area.
-a description of rock units in the  area.
-structural setting of the area.
-mineral and geochemical zoning.
—geologic map of the Tyndall mining  district.
-geologic cross—sections  of a  portion   of  the  Tyndall  mining
 district.
 (p 8- 79)

[r96]
Geology of the Northern Canelo  Hills is  discussed,  the  following
information is included:
-stratigraphy
 Permian rocks.
 Cretaceous rocks.
 Tertiary rocks.
 Quarternary rocks.
-igneous rocks in the area.
-structure.
-mineralization.
-description of measured sections.
 (p 26-124)

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                                                                               32
[r97]
Geology of the southeastern end of the Canelo Hills is discussed.
The following information is included:
-general geology of the area.
-Paleozoic stratigraphy
 Cambrian System-Abrigo Limestone.
 Pre-Devonian Unconformity.
 Devonian System-Martin Formation.
 Mississippian System-Escabrosa Limestone.
 Post-Escabrosa Disconformity.
 Pennsylvanian and Permian Systems
      Naco Group.
-Mesozoic and Cenozoic stratigraphy
 Mesozoic rocks.
 Triassic and Jurassic Systems
      Canelo Hills Volcanics.
 Cretaceous System-Bisbee Group.
 Cenozoic sedimentary and volcanic rocks.
 Cretaceous-Tertiary dike.
-structural geology of the area.
-description of measured sections.
 (p 8-70)

[r98]
Geology of the eastern end of the Canelo Hills is discussed.  The
following information is included:
-stratigraphy
 Cambrian Abrigo Limestone.
 Devonian Martin Formation.
 Mississippian Escabrosa Limestone.
 Pennsylvanian Horquilla Limestone.
 Permo-Pennsylvanian Earp Formation.
 Mesozoic rocks
 Tertiary and Quaternary rocks.
-structural geology of the area.
-geological history of the area.
-geologic map of the Eastern End of the Canelo Hills.
 (p 7-34)

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                                                                               33
[r99]
Geology of the northern Canelo Hills in discussed.  The  following
information is included:
-stratigraphy
 Paleozoic rocks.
 Mesozoic rocks
      Jurassic rocks.
      Cretaceous rocks.
      Tertiary rocks.
-structural geology of the area.
-Mid-Mesozoic tectonics of the area.
—description of measured sections.
-topographic map of the area.
-geologic map of the northern Canelo Hills.
 (p 13-234)

[rlOO]
Geology of  the Cienega Creek  area is discussed.   The  following
information is included:
-a description of the bedrock complex
 Precambrian rocks.
 Paleozoic rocks.
 Triassic and Jurassic rocks.
 Cretaceous rocks.
-Late Cretaceous and Tertiary igneous rocks.
-Valley-fill and Surficial deposits.
-structural setting of the area.               .
-structural history of the area.
-geologic map of Cienaga Creek area.
-complete Bouguer gravity anomaly map of the Cienega Creek area.
-residual gravity anomaly map of the Cienega Creek area.
-fault map of the Cienega Creek area.
-gravity profiles of the Cienega Creek area.
-residual aeromagnetic map of the Cienega Creek area.
—regional Bouguer gravity anomaly map of the Cienega Creek area.
 (p 6-71)

[rlOl]
Geology of  a  study  area near Tubac  is  discussed.   The  following
information is included:
-Pre-Pleistocene geology and tectonics of the area.
-Pleistocene and Holocene geology of the area.
-descriptions of the geomorphic structure Terraces.
-soils chronosequence of the area.
-soil profile of the area.
 (p 8-64, appendix B)

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[rl02]
Geology of  the  Sonoita  Creek Basin is discussed.   The following
information is included:
-summary of regional  geology  and  tectonic  history (pre-Basin and
      Range ) .
-local stratigraphy of Pre-Quaternary basin sediments.
-Quaternary geomorphology and stratigraphy.
-surface structures of the Patagonia Fault  Zone.
-subsurface structural  geometry of  the  basin interpreted from
 geophysical surveys.
-Miocene deformation in Sonoita Creek Basin.
-late Cenozoic basin evolution in Sonoita and adjoining areas.
-generalized  geologic  map  of bedrock  and pre-Basin-Range
 sediments in the region surrounding Sonoita Creek Basin.
-generalized map of the  geomorphology of the Sonoita-Patagonia
      area.
-structural map and cross-sections of the Patagonia Fault Zone.
-complete Bouguer gravity anomaly map of the Sonoita  Creek  Basin
      study site.
-interpretative subsurface structural map  of the  Sonoita Creek
 Basin study site.
 (p 15-217)

[rl03]
Geology of  the Pjarito  Mountains is discussed.   The  following
information is included:
-regional geology.
-stratigraphy  and lithology of the rocks  in the area.
-structural geology of the area.
-geochemistry  and economic geology of the area.
-a tectonic synthesis  of the area.
-geologic map  of the Pajarito Mountains.
—geologic cross— sections in the Pajarito  Mountains.
 (p 6-97)
A  correlation  of  volcanic  rocks in  Santa Cruz  County and  a
discussion of the general geology of Santa  Cruz  County  is given.
(p 1-51)

[r!05]
Stratigraphy of the  Permian system  in  southern Arizona  is
discussed.  Descriptions of measured sections are included.
(p 1-203)

[r!06]
Changes  in  stratigraphic names  in the Santa  Rita  Mountains  is
discussed.

Crl07]
Mesozoic  stratigraphy  of the  Santa  Rita  Mountains  southeast  of
Tucson is discussed.

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                                                                             35
[r!08]
Cenozoic rocks of the Santa Rita  Mountains  southeast  of  Tucson  is
discussed.

[r!09]
Structural  geology  of  the  Santa Rita  Mountains southeast  of
Tucson is discussed.

CrllO]
The tectonics of the  Laramide orogeny in . southeastern Arizona  is
discussed.

[rill]
Mesozoic, sedimentary,, and volcanic rocks  of southeastern Arizona
are described and the Mesozoic history of  southeastern Arizona  is
discussed.   Stratigraphic  relations and regional  correlations  of
Mesozoic rocks in the region are  discussed.   (p  49-58)
The  volcanic  rocks  of the  Canelo  Hills in southeastern  Arizona
are  described  and  the volcanic  history  of  this region is
discussed.
The  geologic  history  of  southwestern Arizona  is  discussed.
Included  is  a  description of  the  Cenozoic  stratigraphy of
southwestern Arizona.
Plutonic rocks  of the Santa Rita  Mountains  southeast of Tucson
are described.

CrllS]
Geologic map of the Sahuarita quadrangle.
Geology of the Pena Blanca and  Walker  Canyon  areas  are discussed.
The following is included in the  discussion:
-volcanic stratigraphy of the area.
-structural geology of the area.
-structural features in the area.
-geological history of the area.
 (p 171-182)
Mineral deposits  of the  Santa  Rita and  Patagonia Mountains in
southern Arizona are described.   Included is a discussion of the
origin and locations of  the  mineral  deposits.

[r!20]
This  paper  includes names and thicknesses  of  formations and an
extensive  bibliography  for the geology  of  Arizona.

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                                                                              36
This  book  is an  extensive  discussion on  the soils  of Arizona.
The following information is included:
-what soils are and how they form.  (p 1-15)
-geology of the Basin and Range Province
 general nature of the geology.  (p 17-21)
 evolution of structural features.  (p 21-23)
 geomorphology and soils.  (p 23-26)
—mapping unit descriptions of the Arizona general soil map.
-complete descriptions of soil associations.  (p 71-142)
-description of soil series.  (appendix E)

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                                                   37
TOPOGRAPHY

-------
                                                                              38
[1]
General description and topography of Nogales  wash  study  area  as
defined by this report (p 33).

Cl]
Surface drainage  of the  Santa  Cruz  River,  Santa  Cruz and  Pima
counties described (p 33-35) .

[1]
Surface drainage of Nogales  Wash/Potrer.o Creek  (p 34-38).

[23]
General Geographic  Setting  of  the Tucson Active Management  Area
including parts of Santa Cruz County  (p  II-l  -  II-3).

[24]
Physical  Characteristics  including a  general  description and
topography of the study.area described  (p 2-1).

[25]
General Topography  and  Physiography  of the  investegated  area  is
described (p 8).

[29]
General description of  the  topography  and physiography of  Santa
Cruz County, AZ (p 6-7).                                   .

[30]
General description  of  the geography  and history  of the  Upper
Santa Cruz river basin including  Santa  Cruz County,  Arizona
(p A3-A6).

[33]
Generalized description of  the  Santa Cruz River Valley and  it's
surrounding raountians  from Nogales to Tucson  (p 3-4).

[34]
Generalized description of  the Sonoita  Creek  Basin,  Santa  Cruz
County, Arizona (pi).

[38]
Physiography  of  the  Santa  Cruz River  Basin  including   a
description of Basin and Range  topography is  presented.  Included
are descriptions of the alluvial  basins in the Santa Cruz  River
Basin (p 2.9-2.14).

[38]
Generalized  description  of   erosional  and  sediment problems
including physical effects (p 5.15—5.30).

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                                                                              39
[40]
Topography of  the Tubac Valley  and  surrounding  area  is presented
(p 4-1 _ 4_2).

[45]
Topography  and  drainage  characteristics for  the Sonoita  Creek
Ranch study area are described (p 3-1).

[46]
Topography and physical  setting for  the Upper Santa  Cruz  River
Valley is described (p 4-1 - 4-3).

[51]
Topography and Drainage for The  Sonoita  Creek  area including the
area  bounded  by  the Santa Rita  and  Patagonia Mountians  is
described (p 4-7).

[53]
The  geographic setting of  the   upper  Santa Cruz  and San  Pedro
Rivers is described including drainage  areas  and potential  for
flood runoff from these locations (p 2-3).

[54]
Principal subdivisions  of  the  Santa Cruz  River  Basin  are
described.  Tributaries included as  follows:
-West slope of the Santa  Rita  Mountians.
-Sonoita Creek".
-San Rafael Valley.
-Western tributaries.
(p 19-27).

[58]
Topography and  physical  features of  the Upper Santa  Cruz  River
Basin are described.  Information included as  follows:
-Principle mountain  ranges.
-Drainage areas.
-Major tributaries.
-Groundwater  basin sub-divisions.
(p 9-12).

[r!2]
Major communities in the study area, the regional setting of  the
study area,  land  surface elevations  along the floodplain in  the
study  area,  and  major  tributaries in   the  study area  are
discussed.  (p 5-6)

[r27]
A discussion of the regional physiography of the Basin and  Range
Province  is  included.   (p  5-6)

-------
Cr31]
In section  1.0  of  this  report  the surface drainage system in the
vicinity of C.  G.  Conn  Facility is described.   Figure  1-8 is an
aerial photograph showing local surface drainage patterns.

Cr33]
Drainage  systems in  the area  are discussed,  in  particular the
following are mentioned:
-an unnamed east-west ephemeral drainage.
 (drains a basin of about 200 acres)
-north-flowing Nogales Wash.
 (p. 6,7,8, appendix A-12)

[r39]
Topography  and  physiography  of  the north Tumacacori foothills is
discussed.  Included is:
-vegetation.
-elevations.
-major drainages.
 (p 3-6)

[r41]
Topography  and  drainage in  the area  of  Pena  Blanca  and Walker
Canyon are discussed.  (p 3—7)

Cr51]
General topography of the Swab study area is discussed, (p 6)

Cr52]
General topography  and  landscape  features  in  the  Nogales study
area are discussed.  (p 14-19)

Cr62]
General topographic features, elevations, and physiography of the
planning area is discussed.   (p 3)

Cr85]
Topographic map of the Ruby  quadrangle, 15 minute series.

Cr86]
Topographic map of the Nogales  quadrangle, 15 minute series.

Cr87]
Topographic map of the Lochiel  quadrangle, 15 minute series.

Cr88]
Topographic map of the Sunnyside quadrangle, 15 minute series.

[r89]
Topographic map of the Tubac quadrangle, 15 minute series.

-------
[r903
Topographic  map  of  the  Mount Wrightson  quadrangle, 15  minute
series.

Cr91]
Topographic map of the Elgin quadrangle, 15 minute series.

[r92]
Topographic  map  of  the  Fort Huachuca  quadrangle, 15  minute
series.

Cr93]
General description of  the topography and drainage  in  the Mowry
Mine district.  (p 3)

[r94]
General description of the topography and drainage in the Harshaw
Mining District.  (p 5)

Cr95]
General description of topography  in the Tyndall Mining  District.
(p 1)

[r96]
A description of the  physiography and  topography  of  the  Northern
Canelo Hills area.   (p 22-26)

[r97]
A general description of the physiography  of  the  area,  including
regional setting,  local  features,  and drainage.   (p 2-6)

[r98]
A general description  of the topographic features  of  the  area.
(p 1-2)

[rl03]
A general description  of the physiography of  the area.  (p  1-2)

[rl04]
A general description  of the physiography of  the area.  (p  1-4)

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                                                     42
HATER RESOURCES

-------
                                                     43
SURFACE HATER

-------
                                                                              44
[1]
Surfaces  drainages  of Santa Cruz Valley  sub-basin of the Tucson
Active Management Area, information included in this reference as
follows:
-Major surface drainages (boundries and flow patterns).
-Slope of drainages.
-Total drainage area of Santa Cruz River
-Headwater locations.
-Inlets and drainage origination.
-Channel characteristics of .drainages.
-Total area of drainages.
-Historical record of drainage alteration (channelization).
(p 33-38).

[1]
Nogales Wash: flow directions, origination of drainage
(p 8).

[1]
Information  for  surface  water samples  obtained  from outside the
Nogales Wash  Study  Area  as defined by  report.    Included  is the
following information:
-ID No. assigned to each sampling point for cross referencing to
 figures.
-Sample description.
-Location by Township, Range, Section and Quadrant.
-Water quality data available.
-Misc. remarks.
(appendix A, p A—36 - A-37).

[1]
Information  for  surface water  samples obtained  in  the  Nogales
Wash Study Area.   Included is the following information:
-ID No. assigned to each sampling point for cross referencing to
 figures.
-Sample description.
-Location by Township, Range, Section and Quadrant.
—Water quality data available.
-Misc. remarks.
(appendix C, p C-28 - C-29).

[1]
Well locations, date sampled, agency sampling, and referencing ID
No.'s  for  three  locations  (Santa Cruz  River south  and  north of
the International Waste  Water Treatment Plant,  and wells located
adjacent to the Nogales Wash Study Area) are described (p 11-16).

[3]
Discussion  of  surface  water  drainage  pertaining  to  Nogales
Wash/Potrero Creek watersheds (p 3,  figure 7).

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                                                                              45
[6]
Surface water sources and volumes  for  the guena Vista Study Area
as defined by report (p 22 - 33, figures 2 -5, tables 4 -5).

C6]
A water budget  for  the  Buena  Vista Study Area is presented.  The
system in this  budget  is  defined as the  stream  flow and subflow
of  the  inner valley  of the  Upper  Santa Cruz River between the
United  States-Mexico  International  Border,  and  the  Guebabi
Narrows, (p 50 - 58 and 64 - 78, figure 23, table 6 - 10).

[6]
Consumptive  use of  water  by  crops  for  the  five  year period
6/12/75 - 6/11/80 is presented (p 59).

[7]
Irrigation rights for the  City of Nogales described.

[16]
Discussion on the significant  hydrological  effects  of the Meadow
Hills No. 6  development project.   Of  primary importance  is the
expected flows  generated  by  the various  drainage basins.   Other
information included as follows:
-Identification of drainage  basins in the project.
-100 year event discharge  in  these baisns.
-Rainfall data sheet.
-Precipitation .depth versus  return period for partial-duration
 series.
-Design Data sheets, rational  method. Includes:
  Location
  Design data
  Drainage length
  Elevation
  Drainage area slope
  Precipitation
  Design computations
  Runoff coefficient
  Peak discharge
  Date
-Site layouts.
(p 5-34, plates 1-2).

[19]
Projected  annual  water  depletions for  mineral production and
irrigated agriculture by  planning  district including  Santa  Cruz
County (p 40-64).

[19]
Alternative  futures for water  supply planning;  planning district
VI (Cochise,  Graham, Greenlee,  and Santa Cruz Counties)
(p 82-139).

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                                                                              46
 [21]
 Inventory  record  of  Pre-1919  water  rights claimed by the City of
 Nogales, Arizona, (appendix A, table 1, plate 1).

 [22]
 Central  Arizona Project information  and related  effects to The
 City of Nogales, Arizona (no page numbers whole report).

 [23]
 Various  generalized  surface  water  resource information  for The
 Tucson  Active  Management  Area  including parts  of  Santa  Cruz
 County described.  Information included as follows:
 -Santa Cruz River description.
 -Flows in  Major stream channels.
 -U.S.G.S.  stream gaging characteristics.
 -Major flood  events.
 -Discharge of treated sewage effluent.
 (p II-7 -  II-9).

 [23]
 Selected agricultural  and  irrigation information  for the Tucson
 Active  Management Area  including  parts  of  Santa  Cruz  County
 described.  Information included as follows:
 -Limits on uses of irrigation waters.
 -Agricultural water use in the Tucson AMA.
 -Irrigation Acres.
 -Farm size distribution.
 -Irrigation districts.
 -Characteristics of major Agricultural entities Tucson AMA.
 -Assigned irrigation effciencies.
 —Irrigation distribution systems.
 -Tentative future requirements.
 -Consumtive use crop list.
 -List  of  irrigation  Acres,  water  Duty acres,irrigation  water
 duties, and maximum annual  groundwater allotments.
 (p IV-1 - IV-23, appendix IV-A p IV-i - IV-iv).

 [24]
 Surface  hydrology  of  the  Nogales Wash Study Area described.
 Information included as follows:
-Subbasins within the Nogales  Wash drainage  basin.
-Existing water courses
-River reaches containing the  following information;
  length
  location
  type of flow
  source of flow
  anthropogenic changes to  natural water course
  inlets outlets and capacities
-Existing storage structures.
-Rating curves
 (p 2-3 - 2-13 and EA-16).

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                                                                              47
[24]
Flooding  information  for  The  Nogales  Wash/Potrero  Creek  Study
Area is presented.  Information included is as follows:
-General overview
-Historical flood damages.
-Projected damages.
-Discharge frequency characteristics.
-Property values by reach vithin the 500 year floodplain.
-Damages by reach per event.
-Summary of discharge-frequency results.
-Flooding characteristics by river reach.
-Bank erosion.
(p 3-1 - 3-13).

[24]
Nogales  Wash/Potero  Creek Drainage and  subarea  boundries  and
hydrologic concentration points (Plate # 1).

[24]
Areas  subject to  inundation from  Nogales Wash/Potrero  Creek
mainstream (Plate # 4A-4C).

[24]
Nogales Wash lateral collector channels  (Plate # 5-6).

[24]
Nogales Wash Chula Vista Channel;  plan/profile and channel cross-
sections for the 100-year flood (Plate # 7-8).

[24]
Nogales Wash existing flood  control channel system (Figure EA-2).

[25]
General description of precipitation and streamflow for the  study
area described (p 8-9).

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                                                                               48
[25]
Description  of  surface and  subsurface inflows  and outflows  for
the study area.  Included is the following information:
-Surface inflows and gauging station information.
-Ranges of annual discharges.
-Accumulated discharges.
-Side inflow.
-Variations in surface inflows.
-Analysis of runoff in The Santa Cruz River near Nogales.
-Effects of withdrawels in Mexico upon surface inflows.
-Withdrawals in Mexico from water supply of Santa Cruz River.
-Recharge from surface inflow.
-Relation between depth to water table and discharge of Santa
 Cruz River.
-Recharge from Precipitation.
-Underflow into subareas.
-Hydrologic balance.
(p 17-36, appendix B-C).

[29]
General  description of  surface  water  resources for  Santa Cruz
County, AZ.  Information included as follows:
-Sources.
-Major drainage areas.
-Storage reservoirs and lakes
 depth
 capacity
 surface area
-Surface water records at certian gaging stations.
(p 9-11, plate 2).

[30]
Streamflow  data  for The  Upper Santa Cruz River Basin including
Santa Cruz County, Arizona.  Information included as follows:
-Period of record for streamflow-gaging stations.
-Reduction of flood peaks by channel losses.
—Effects of streamflow on water levels in wells.
-Variation and distribution of annual strearaflow.
-Flow durations.
-Distribution of the daily high,  median and low flows, 1945-1963
 for The Santa Cruz River Near Nogales and Sonita Creek near
 Patagonia.
—Analysis of high and low flows.
-Recurrence intervals.
—Monthly distribution of flood peaks above selected base
 discharge.
-Regional frequency curves.
-Storage analysis.
-Variability of annual peak discharge at gaging stations.
-Sustained Flows.
(p A8-A26, plates 1, 3-6).

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                                                                              49
[36]
Surface water information  for  the  Sonoita  Creek  Aquifer is
presented.  Information included as follows:
-Watershed Evapotranspiration.
-Surface Runoff.
-Surface water resources potential of the basin.
-Information for Lake Patagonia and Redrock Reservior including:
 Size
 Volume
 Water releases
 Water supply potential
 Surface Runoff
 Evaporation
 (p 19-21, 35-44).

[37]
Hydrologic  budget  for  the  Cienega  Creek  groundwater  basin is
described (p 24-28).

[38]
Surface water resources of the  Santa  Cruz  River  Basin  are
described.  Included is the following information:
-Streamflow charcteristics.
-Surface water stroage.
-Seasonal streamflow distributions.
-Description of streamflow basins.
-Maximum, minimum and median monthley flows for selected sites.
—Average annual unit runoff data.
-Selected streamflow data.
(p 2.17-2.39).

[38]
Description of  flooding  problems in the Santa  Cruz  River Basin.
Information includes:
-Generalized discussion.
-Types of Floods and areas effected.
-Physical and economic effects.
(p 5.1-5.4).

[46]
Surface  water  information for the  Upper Santa Cruz  River  Basin
from the International Boundry to the Pima-Santa Cruz County line
is presented.  Information includes:
-Historical observationsof the Santa Cruz River.
-Contemporary Observations of the Santa Cruz River.
-Observations and records of  other streams  in Santa Cruz County
 including:
  Nogales Wash
  Portrero Creek
  Sonoita Creek
  Sopri Wash.
(p 3-1 - 3-8).

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                                                                               50
 [49]  .
 Described are  flooding  in Southern Arizona  with a focus  on the
 Upper Santa  Cruz  River Valley  for October,  1977.   Information
 included as follows.
 -Data collection techniques.
 -River stages.
 -Rainfall disposition and  distribution.
 -Flood damage.
 -Flood peak.
 -Flood size.
 -Storm runoff.
 (p 66-70).

 [50]
 Flooding along the Santa Cruz River in Santa Cruz County, Arizona
 is described  to aid in solving local .flood problems.   Information
 included as follows:
 -Maps, profiles, and  cross sections of past flooding.
 -Current rainfall  and runoff.
 -Historical flood  heights.
 —Velocity of  flood waters.
.-Silt and debris deposition during flood stage.
 -Bank cutting and  scouring of river bed  during flood  stage.
 (p 1-11).

 [51]
 Runoff  and  inflitration  characteristics  for  the Sonoita  Creek
 Watershed are described.   Information included as follows:
 -Average annual streamflow.
 -Infiltration rates.
 -Recharge due to surface flows.
 -Surface discharge.
 -Gauging descriptions.
 -Patagonia dam releases.
 (p 19-22).

 [53]
 Runoff data  for the  Upper Santa  Cruz  River during the  month of
 October  1977  is presented.  Information  included  as follows:
 -Streamflow records.
 -Gaging  sites.
 -Stage-discharge relations.
 -Flood crest  information.
 -Peak discharges.
 —Damage  estimates.
 -Extent  of inundation along the  river.
 -Bank erosion damage.
 -Comparison with past flooding events.
 -Selected gaging station data.
 -Inundated areas.
 (p 5-18,  55-140, Plate  #2).

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                                                                              51
 [56]
 Water resources data for the given water year for Arizona consist
 of  records  of stage,  discharge,  and water  quality of  streams;
 stage,  contents,  and water  quality  of  lakes  and  reservoirs;
 measurements  of  ground-water  levels; and  quality of  water  from
 selected wells.  Also included are discharge data for crest-stage
 partial-record station and  water-quality data  for partial-record
 stations.   Locations  of  the gaging  stations  and  water  quality
 stations  are  shown.   Additional water  data  were  collected  at
 various sites,   which are not  part  of  the systematic  data-
 collection program,  and  are  published  as   miscellaneous
 measurements or miscellaneous water-quality analyses.   These data
 represent that part of the National Water Data  System operated by
 the  U.S.  Geological  Survey  and cooperating  State and  Federal
 agencies in Arizona.

 Records of discharge or stage of streams and contents  or stage of
 lakes and  reservoirs were  first  published in  a  series of  U.S.
 Geological Survey  water-supply papers  entitled "Surface  Water
 Supply of the United States."   These  water—supply papers  were in
 an  annual  series through water  year: 1960 and then in a  5—year
 series  for  1961-65  and 1966-70.   Records  of  chemical  quality,
 water temperatures,  and suspended  sediment  were published  from
 1941 to 1970 in  an  annual series of  water-supply  papers  entitled
 "Quality of Surface Waters of  the  United States."   Records  of
 ground-water levels were published from 1935-1974 in a  series  of
 water-quality papers entitled "Ground-water Levels  in  the  United
 States."

 For  water  years   1961-74,  streamflow data were  released by  the
 Geological Survey in  annual reports  on  a  State-boundary  basis.
 For  water years  1964-74,   water-quality records  were  similarly
 released either  in separate  reports or  in  conjunction with
 streamflow records.

 Beginning with the  1975 water  year,  water data  for  streamflow,
 water quality, and ground water are published  in  official  Survey
 reports  on a State-boundary  basis.   These official Survey  reports
 carry an identification number consisting of  the  two—letter  state
 abbreviation,  the  last two  digits  of  the water year,  and  the
volume number.

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                                                                              52
[57]
This report  relates  to the potential flood hazards  along a 12.0
mile reach ot the Santa Cruz River in Santa Cruz County, Arizona.
It was prepared at to  aid  in  the  planning of land use subject to
overflow.  Information included as follows:
-Existing flood control facilities.
-Rainfall and past floods.
-Problems of future floods.
-Peak discharge.
-Areas flooded from projected flood heights.
-Structures affecting flow.
-Velocity of water.
-Santa Cruz River Watershed map.
-Flood potential areas.
-High water profiles.
-*Cross sections.
(p 1-14, Plates 1-20).

[58]
Surface water information for the  Upper Santa Cruz River Basin is
presented.  Information included as follows:
-Discharge characteristics.
-Duration of flow.
-Discharge of ungaged tributaries.
-Infiltration.
-Streambed evaporation.
-Mountian front recharge.
-Surface water inputs as part of a water budget for the basin.
—Sewage effluent flow.
-Surface water outputs as part of  a water budget for the basin.
-Average annual surface water budgets.
(p 32-36, 59-66).

[59]
Flood  analysis  and generalized  flood  information  for  the
unicorporated  areas  of  Santa  Cruz  County  is  presented.
Information included as follows:
-Principle flood problems.
-Flood protection measures.
-Hydrologic analyses including;
  Peak discharge—frequency relationships.
  Peak discharge-drainage area relationships.
  Flood elevations.
  Crosss section data for streams.
  Flooding source and location.
  Flood profiles.
-Flood Plain management applications.
-Floodway data.
(p 7-38, Exhibits 1-3).

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                                                                               53
[60]
Flood  analysis  and  generalized  flood information for the  City  of
Nogales, Santa  Cruz County is presented.  Information included  as
follows:
-Principle flood problems.
-Flood protection measures.
-Hydrologic analyses including;
  Peak discharge-frequency relationships.
  Peak discharge-drainage area relationships.
  Flood elevations.
  Crosss section data for streams.
  Flooding source and location.
  Flood profiles.
-Flood Plain management applications.
-Floodway data.
(p 4-33, Exhibits 1-3).

[61]
Flood  analysis  and  generalized  flood information for the  Town  of
Patagonia, Santa Cruz County  is  presented.   Information included
as follows:
-Principle flood problems.
-Flood protection measures.
-Hydrologic analyses including;
  Peak discharge-frequency relationships.
  Peak discharge-drainage area relationships.
  Flood elevations.
  Crosss section data for streams.
  Flooding source and location.
  Flood profiles.
-Flood Plain management applications.
-Floodway data.
(p 5-16, Exhibits 1-2).

[62]
Statistical summaries of streamflow data for the state of  Arizona
are presented with information including Santa Cruz County.

[64]
Map showing  components  of the  water  budget  in the  Tucson area
including Santa Cruz County.   Information included as follows:
-Pumpage amounts.
-Use of pumpage.
-Inflows to the Upper Santa Cruz River Basin including;
  Groundwater from Mexico.
  Surface flows from Mexico.
  Tributary inflow.
  Mountian front recharge.
  Recharge to groundwater.
  Recoverable groundwater in storage.
-Outflows from the Upper Santa Cruz River Basin.
(Sheet 1).

-------
[66]
Map  of  irrigated lands in  the  Tucson area including  Santa Cruz
County, Arizona.  Information included as follows:
—Irrigated land for more then 10 years.
-Irrigated lands begining in 1962-1973.
-Formerly irrigated lands but now withdrawn from production.
(Sheet 1).

Cr5]   .
Streamflow at  the  IWWTP in  Santa  Cruz River, Sonoita  Creek and
Nogales Wash is discussed.
(P 3).

Crl2]
Major tributaries of the Santa Cruz River in the IWWTP study area
include,  Nogales  Wash  (Potrero  Creek),  Sonoita  Creek,  Peck
Canyon, Josephine Canyon, and Sopori Wash.  Mean annual streamflow
and  average  annual streamflow  for  two sites  on the  Santa Cruz
River,  for  Nogales Wash  at  the confluence with the  Santa Cruz
River,  for  Sopori  Wash,  for Sonoita  Creek,  and  for  other
tributaries upstream of  Sopori  Wash are given.   Extent  of reach
and seasonal fluctuations in streamflow are discussed.
(p 4-5)

[r33]
Surface water  drainage is discussed,  area drained and  the peak
100-year discharge  is  given for the unnamed  east-west  drainage
and for the north-flowing Nogales  Wash.
(p. 8, appendix A-9, A-67)

[r51]
The  occurrence of  surface water in  the Swab  study  area  is
discussed.  The following is included:
-sources of surface water flow.
-origins of streams.
-seasonal flow variations.
(p 9)

[r52]
Surface water flow in the ephemeral  streams (Nogales  wash,  Santa
Cruz  River)  in the  study area are discussed.   Gaging  station
records of the  Santa  Cruz River at two different locations  are
given.  100-year flood flow  rates  for the surface waters  of  the
study area are given.
(p 11-11 to 11-3,  14-9,  Table 14-3  and 14-4)

[r62]
Flow  in  the  Santa  Cruz River and Nogales  Wash is  discussed,
including the  source of the  surface  water.   (p  3,5)

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                                                                              55
[r96]
A general  discussion of  the  water supply  in the  study  area is
given.  Drainage areas and sources of water are described.
(p 124- 147)

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                                                   56
GROUNDWATER

-------
                                                        57
HYDROGEOLOGIC SETTING

-------
                                                                              58
 Generalized  hydrogeologic  setting  described for  Nogales Study
 Area as  defined  by  report  (p 50).

 [1]
 Hydrologic  units for  the Nogales Wash Study Area described
 (p 52, figs 7-2  and 7-3).

 [1]
 Groundwater flow directions and potentioraetric  surfaces for the
 Nogales  Wash Study  Area (p 50-51).

 [1]
 Regional  hydraulic  gradients  reported for  Nogales  Wash/Potero
 Creek Area  (p 50).

 [13
 Recharge sources for  the  hydrogeologic  units described by report
 for  Nogales Wash Study Area (p 50).

 [3]
 Hydrogeologic setting of the City of Nogales and vicinity
 (p 3, figures 1-3).

 [3]
 Fluctuations of  groundwater table for Nogales Arizona area
 (p 4, figures 8-9).         .

 [5]
 Discussion of   recharge  in the Upper  Santa  Cruz  River  in  the
.vicinity of the border  cities Nogales Arizona  and  Sonora.
 Discussion  of recharge modeling in this area discussed
 (p 63 -  70).

 [6]
 Groundwater recharge  and  discharge  charactaristics  for The Buena
 Vista Study Area are  described (p 38 - 45, figures 14 - 15).

 [6]
 A  water  budget for  the Buena  Vista  Study Area is presented.  The
 system in this budget is  defined as the stream  flow  and subflow
 of the   inner valley  of  the Upper  Santa Cruz River  between  the
 United  States-Mexico International Border,  and the  Guebabi
 Narrows,  (p 50 - 58 and 64 - 78, figure 23, table 6 - 10).

 [6]
 Sources  and volumes of groundwater  including flow directions  for
 the  Buena Vista  Study Area as defined by report (p- 22 - 33).

 C6]
 Hydrogeologic units for the Buena Vista Study Area are described
 (p 38 -  45).

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                                                                             59
[6]
Interaction between the surface flow of the Santa Cruz River and
water  contained in  the  Younger  Alluvium  hydraulic unit  is
described (p kl - 50,  figure  6).

[11]
Predevelopment  hydrologic  conditions  in the  alluvial  basins  of
Arizona and adjacent  parts of California and New Mexico.
Map  showing  ground-water  levels,  springs,  and  depth  to
groundwater, basin and range  province, Arizona.

[15]
Map  showing  ground-water  levels,  springs,  and  depth  to
groundwater, basin and range  province, Arizona.

[23]
Generalized  Hydrogeologic  setting  for  the  Tucson  Active
Management Area including parts of  Santa  Cruz County described.
Information includes  the  following:
-Sources of water.
-Rock types.
-Hydrogeologic units.
-Generalized well  yields.
-Regional water levels
(p II-3 - II-6).

[23]
Water budget basline and overdraft projections are discussed for
the Tucson Active Management Area including  parts of  Santa Cruz
County (p 11-11 -  11-17,  appendix  II-A  p Il-i - Il-vi) .

[24]
General description of groundwater characteristics for Santa Cruz
County and The Nogales Wash Study Area (p EA-16).

[25]
Generalized description of the ground-water resources.   Included
is the following information:
-Subdivisions of the  hydrologic units.
-Calculations of the  saturated volume of the units.
-Quantity of ground water  in  storage.
-Recharge and discharge.
-Evapotranspir ation .
-Hydrographs of water  levels  in selected wells
(p 16-27, plate #3).

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                                                                              60
[26]
Individual  groundwater  districts and  sub-areas  described.   The
Santa Cruz  County District includes  the  Amado-Tubac,  Tumacacori-
Calabasas,  and Nogales Wash-Quebabi  sub-areas.  Information
includes water levels, water level declines,  and  basic structures
of saturated materials (p 12-13).

[26]
Groundwater  contour  maps based  on  level  measurements  from  the
Spring of 1961 for Santa Cruz County District (p  13-15, plates
III-IV).

[27]
Groundwater  contour  maps based  on  level  measurements  from  the
Spring of 1965 for Santa Cruz County District (Plates  IV-VI).

[27]
Individual  groundwater  districts and  sub-areas  described.   The
Santa Cruz  County District includes  the  Amado-Tubac,  Tumacacori-
Calabasas,  and Nogales Wash-Quebabi  sub-areas.  Information
included as follows:
-Water levels.
-Water level declines.
-Basic structures of saturated materials.
-Water use.
-Representative hydrographs.
(p 20-22).                       .

[28]
Plates containing  the  following  information for the  Upper Santa
Cruz Valley, Santa Cruz County,  Arizona:
-Groundwater level contours  spring 1970.
-Depth to water spring 1970.
-Groundwater level changes 1965-1970.
-Groundwater level changes 1947-1970.
(Plates V-VIII).

[29]
General  description  of groundwater  resources  for   Santa  Cruz
County,  AZ.  Information included as follows:
-Alluvial deposits and depth to water.
-Potential well production.
-Occurance of groundwater.
-Hydrologic units.
-Recharge sources.
-Percentage of water  from precipitation to  recharge.
—Pumping summary,
—Future water needs and sources.
(p 8-9,  plates 3-4).

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                                                                              61
[33]
Description and  conclusion  of  the  availability  of  groundwater
from storage (p 45-48, table 4).

[35]
General hydrology  for  the  Sonoita  Creek  basin  is described.
Information included as follows:
-Occurrence of groundwater.
-Recharge.
-Discharge.
-Water level fluctuations.
-Hydraulic gradients.
-Movement of Groundwater.
(p 32-42, plate 1).

[36]
General information  on  the  hydrogeology of  the  Sonoita Creek
Aquifer is described.  Information included as follows:
—Occurance of groundwater.
-Movement of groundwater.
-Water level fluctuations.
  In responce to recharge)discharge.
  Seasonal variations.
-Groundwater Flow net.
-Water. Balance of the Watershed.
-Groundwater underflow to watershed.
-Groundwater underflow out of the watershed.
-Groundwater resources potential of the basin.
(p 12-21, 26-29).

[37]
Groundwater recharge/discharge  for the  Cienega Creek groundwater
basin is described.  Included is the  following  information:
-Infiltration through the vadose zone.
-Infiltration thro'ugh fractured media.
-Recharge capacity coefficients.
-Upland and mountain front recharge estimates.
-Discharge from the basin.
(p 28-31).

[37]
Baseflow information for Cienega Creek  is described (p 31-34).

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                                                                              62
[38] .
Hydrologeologic  setting  of  the  Santa  Cruz  River  is  described.
Information included as follows:
-Occurance of groundwater.
-General geologic conditions in a typical alluvial aquifer.
—Direction and rate of movement of ground water.
-Types of recharge and discharge in Aquifers.
—Description of individual basins in the study areas.
-Thickness, types,  and discription of aquifers.
(p 2.39-2.64).

[39]
Hydrogeologic setting  for the Tubac Valley  Country Club Fairway
Estates area is described.  Information included as follows:
-Topography and generalized geologic setting.
-Information relating to hydrogeologic units  including;
  Description of units
  Historic water levels
  Current water levels
-Direction of groundwater movement.
-Mountian front recharge.
-Recoverable groundwater.
(p 4-1 _ 4-12).

[40]
Hydrogeologic  setting  of  the  Tubac Valley area  is  described.
Information included as follows:
-Descriptions of the hydrogeologic units including;
  Depth and thickness
  Lithology
  Areal extent
-Historic Water level data.
-Current water level data.
-Direction of groundwater movement.
-Mountian front recharge.
(p 4-1 _ 4-12).

[41]
Hydrogeologic   and  groundwater  charactersitics  of  the  WDC
Partnership study  area  are described.   Information included  as
follows:
-Historic water levels for each hydrogeologic unit.
-Water level fluctuations over time for selected well sites.
-Current water levels.
-Groundwater Contour Maps.
-Mountian front recharge.
-Recoverable groundwater.
-Direction of groundwater movement.
(p 4-6 - 4-10).

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                                                                              63
[44]
Hydrogeologic  setting  of  the  Todd  Ranch  study  area  described
including the following information:
-Aquifer system and areal extent.
-Direction of groundwater movement.
-Sources of recharge.
-Recoverable groundwater.
(p 4-5 - 4-8).

[45]
Hydrogeologic  setting  of the Sonoita Creek Ranch  study  area is
described.  Information included as follows:
-Occurance of groundwater.
-Sources of recharge.
—Direction and gradient of groundwater movement.
-Discharge of groundwater.
-Aquifer thickness and areal extent.
-Aquifer productivity.
-Storage and transmissivity values of Aquifer.
-Current depth to water.
-Water level trends.
(p 6-5 - 6-8, 9-1).

[46]
Hydrogeologic characteristics of the Upper Santa Cruz River Basin
are described.  Information included as follows:
-Hydraluic character of the aquifer system including;
  Transmissivity
  Storage coefficient
  Well yields
-Sources of recharge and changes in water levels.
-Descriptions of various water bearing units.
-Water level changes.
-Recoverable groundwater.
-Underflow beneath Santa Cruz River at the Santa Cruz-Pima County
 line.
(p 6-1 - 6-17).

[51]
Hydrologic  description of  the  Sonoita  Creek   watershed  is
presented.  Information included as follows:
-Annual rainfall.
-Dam releases from Patagonia Lake.
-Recharge and discharge from aquifer.
-Water table elevations.
-Water production  potential.
(p 16-17, 22-30, 51-56).

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                                                                              64
[52]
This reference  includes  a  series of maps from  1972  through 1984
showing groundwater  conditions  throughout the  State  of  Arizona.
Each  map  covers  one  year.   Information included  on maps  as
follows:
-Potential well production.
-Depth to groundwater for that year.
-Groundwater level changes for five year period.
-Groundwater area boundries.
-Water-province boundries.
-Availability and use of Water.
-Estimated groundwater pumpage by type of use  in a certian year.
-Status of groundwater inventory and observation well program.

[54]
The  hydrologic setting  of  the  Santa  Cruz  River  Valley  is
presented.  Information included as follows:
-Occurance of Groundwater.
-Source of groundwater.
-Water level contours.
-Recharge.
-Losses from surface flow.
-Infiltration rates.
-Underflow.
-Natural discharge.
-Pumpage.
-Fluctuations of the water level.
(p 33-53, 64-65, 69-70).

[55]
Groundwater resources  are discussed  for the  Upper Santa  Cruz
River.   Information included as  follows:
-Development of groundwater.
-Pumpage.
-Fluctuations of water level.
-Estimated safe yields.
(p 2-7).

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                                                                              65
[58]
Hydrogeologic  setting  of  the  Upper  Santa  Cruz River  Basin is
described.  Information included as follows:
-Geological and hydrogeological boundries of the basin.
-Hydrogeologic unit descriptions including;
  Alluvial deposits.
  Indurated sediments.
  Basin-fill deposits.
  Floodplain Alluvium.
  Alluvial-Fan Materials.
-Water sources.
-Infiltration and groundwater.
-Mountian front recharge.
-Underflow determinations.
—Change in storage analysis.
-Water level change.
-Specific-yield data.
-Infiltration in Santa Cruz River Channel.
—Change in groundwater storage.
-Average annual groundwater budget.
(p 17-21, 24-26, 35-44, 63-64, 66-68,  76-78, 98-105).

C63] .
A  generalized  discussion  about  water  resources  in  Arizona is
presented  with  some  discussion of the  Upper  Santa Cruz  River
Basin.  Information includes the following:
-Evaporation.
-Scarcity of usable water.
-Ground-water depletion.
-Salts in soils.
-Growth of water development.
-Uses of water.
(p 1-84).

[69]
Map showing distribution of recoverable groundwater in the Tucson
area including Santa Cruz County.  Information includes estimated
recoverable groundwater to a depth of 12,00 feet (in acre-feet of
recoverable groundwater per square-mile).

[71]
Map  showing groundwater  velocities  in  the  uppermost  saturated
alluvial deposits of the Tucson area including Santa Cruz County.
Information includes:
-Direction of movement.
-Average groundwater velocity in feet per year.
(Sheet 1).

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                                                                               66
[73]
Reported  is  a  synopses  o  fthe  findings  of the  Arizona Water
Commission's study on the impact  of  future growth on groundwater
resources  in  11 of the state's  major basin  areas  including  the
Upper Santa cruz River Basin.  Information included as follows:
-Pumping depths.
-Pumping costs.
-Overdrafts.
—Urban—agricultural—mining demands.
-Indian water rights.
-Irrigation.
-Diversions.
-Other water management considerations.
(p 1-4, Fig #1).

Cr5]
The following is discussed:
-groundwater flow conditions below IWWTP
-hydrogeological units
-calculation of groundwater subflows of each drainage system;
 Nogales Wash
 Santa Cruz River above IWWTP
 Santa Cruz River below IWWTP
 Sonoita Creek
-map (figure 5) showing the  following;
 location and well designation of monitor wells around
      treatment plant.         -   •
 depth to water below land surface measured in 1981-1982.
 altitude of the water level in feet above mean sea level.
 water level contour, showing approximate  altitude  of water
      level.
 generalized direction of groundwater  flow in the vicinity
      of IWWTP.
 calculated groundwater subflow in the younger alluvium.
 (p 3,10,13-15).

Crll]
Discussion of  water  resources in  the Nogales  Wash  study area
include the following information;
-regional hydrogeology
  (includes map of regional  groundwater contours).
—site  hydrogeology,
  water bearing units.
-aquifer characteristics,
  hydraulic conductivity.
  transmissivity.
  specific yield.
  groundwater velocities.
  hydraulic gradient.
  porosity.
  (pi6-20)

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                                                                              67
[r!2]
Water  resources in  the  IWWTP  study  area  is  discussed,  the
following information is included:
-Subsurface geologic conditions, (p 21-26)
-Well inventory in the  IWWTP  study  area,  including maps  with
 locations of all wells in the study area, (p 16-21)
-Well construction data of all wells in the study area,
 well location.
 local number.
 well use.
 date drilled.
 depth drilled.
 casing diameter.
 cased depth.
 perforated interval.
 (appendix B)
-Drillers logs for the wells in the study area,
 well owner.
 lessee or operator.
 driller name.
 location of well (TRS and subdivsion).
 intention to drill file number.
 permit number.
 description of the well,
      total depth of hole.
      type of casing.
      diameter and length of casing.
      method of sealing at reduction points.
      perforated interval.
      size of cuts.
      number of cuts per foot.
      screen installation and type.
      method of construction.
      date started.
      date completed.
      depth of water.
      point from which depth measurements were made.
      method of flow regulation.
 discharge data,
      well discharge.
      method of discharge measurement.
      drawdown.
      annual discharge in acre-feet or hours pumped.
      purpose of use.
 equipment data,
      kind of pump.
      kind of power.
      horsepower rating of motor.
 log of well,
      interval (feet).
      description of formation material.
      (appendix D)

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                                                                              68
[rl2]
Water  level  measurements  collected  from  the  University  of
Arizona, ADWR, U.S. Geological Survey, and water  levels  measured
in 113 wells in the study  area by  Ken Schmidt and Associates are
given. Also discussed is fluctuations in the  water levels  due to
streamflow in the Santa Cruz River.   Contour  maps of water level
elevations for  May-June  1988 and  groundwater flow  direction  in
the  study  area is   given.  Water  level  hydrographs of  several
wells is included, (p  26-32)

[r!2]
Total  and  average pumpage  (acre-feet per  year)  - from  different
water uses in the  study area  is  discussed,  (p  33—34).

[r!2]
Water  level  measurements   for  selected wells  in  the study  area
(April-July 1988)  are given  in  appendix  D of  the report.    The
following information  is included:
-well location.
-local number.
-land surface elevation (feet).
-date measured.
-depth of water (feet).
-water-level elevation (feet).

[r!2]
The  major  sources of  recharge  in the  study  area  (infiltration
from the major  stream channels and  mountain-front  recharge)  is
discussed  ' and  estimates  of the  amount  of  recharge from  each
source is discussed,  (p 34)  The amount of groundwater  estimated
to be is storage in the  alluvial  deposits within the study  area
is also discussed, (p  34—35)

[r!2]
A  discussion  of   aquifer characteristics  in  the study  area
includes the following information:
-specific conductances.
-permeabilities.
-transmissivities.
 (p 35)

Cr27]
Hydrogeology of the area is characterized by  the  installation of
10 monitoring wells, review of existing data,  two  slug tests, and
one  aquifer  pump  test.  Groundwater flow is  considered E  to NE.
Since March 1985 water levels in all  wells have been measured at
5  week  intervals.   Table  3  shows  the water  level  elevations  in
the  United  Musical  Instruments  monitoring  wells, the  following
information is given:
-well number.
-date measured.
-water level in feet above  sea level.

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                                                                              69
 [r27]
 Table  4  shows  the  construction details for the monitoring wells,
 it contains the following information:
 -well  ID.
 -total depth (feet).
 -casing  sizes.
 -perforation interval (feet).
 -drilling method.
 -access  for water level measurements.
 -monitoring schedule for water levels  (5 weeks).
 -monitoring schedule for water quality (quarterly).

 Cr27]
 Appendix  B  contains  the  monitor  well  logs, the following
 information is included:
 —depth of well.
 -well design.
 -lithology (description).
 -water level.
 -aquifer parameters,
 hydraulic conductivity (from 2 slug tests).
 transmissivity.
 specific yield.

 Cr31]
 In section 2.0 of this report is a discussion of the water supply
 wells in the area.   Forty-two municipal and domestic supply wells
 located  within a three  mile  radius  of  the known  extent  of the
 contamination  in the  downgradient  direction and within  one  mile
 radius  in  the  upgradient  direction are  located  and  shown  on
 Figure 2-1.  The following well logs are given:
 -Log of  boring well No.  UMW-1, figure 1-4.
 -Log of boring well No.  DMW-1, figure 1-5.
 -Log of boring well No.  DMW-2, figure 1-6.
 -Log of boring well No.  DMW-3, figure 1-7.

 Cr31]
 A  discussion  of the  phase  I  groundwater monitoring  program  is
 included in section 4.1  and  appendix A, included is  the following
 information:
-map showing location of phase I monitoring wells.   (figure 1-9)
-well construction data  of the four monitoring wells.
-results of two slug tests.
-average water table elevations at each well.
-pumping test records.  (figure 4-9)

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                                                                             70
[r31]
Water  level  measurements  for  all  wells  in  phase  I  report are
given, section 5.1 and appendix D.   The following information is
included:
-well ID.
-date measured.
-water level elevation (feet).
-average elevation.

Cr31]
Information on phase II monitoring  wells include  the following:
-well construction data (DMW-4, DMW-5, DMW-6, DMW-7, DMW-8, DMW-
 50). (section 4.4 and figure  4-8)
-well development.   (section  4.5)
-aquifer pumping test.   (section 4.6)
-geophysical logging.    (section 4.7)           '

Cr31]
A  discussion  on aquifer  properties  includes the  following
information:
—map  showing  surface  drainage  directions  and  direction of
 groundwater flow.   (figure 1—9)
-local water table gradient.   (section 4.2)
-direction of  local  groundwater  flow  gradient  (northeast).
 (section 4.2)
—hydraulic conductivity  for the screened  aquifer  zone  in each
 well.   (section 4.2)

[r33]
A  description  of the  major aquifers (Nogales  formation,  Older
Alluvium, Younger Alluvium)  in the  area  include  the following
information:
-aquifer type.
-aquifer material.
-permeability.
(p 8)

Cr33]
The  calculated  mean  groundwater  velocities,  and  the  depth to
water in this area, and  documented declines  in the static water
levels between 1940  and 1970 are given.
(appendix A-l,  A-9,  A-17,  A-25, A-81)

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                                                                              71
Cr34]
The  geohydrological  setting  of  the  study  area  is  described.
Aspects  of the  hydrology of  each  unit discussed,  include  the
following:
-aquifer interrelations.
-aquifer type.
-sources of recharge,
 infiltration of streamflow along major streams.
 infiltration of sreamflow along mountain fronts.
 subsurface inflow from adjacent basins.
-areas of discharge.
—water level declines.
 (p 116-131)

Cr34]
Figure 76 shows a schematic of the generalized physical system of
the  region,  a generalized  water  budget,  generalized  flow-
component  response  to  pumpage,  and a  generalized change  in
storage in response to pumpage in the region.

Cr37]
This thesis includes a detailed gravity survey of the Upper Santa
Cruz  Valley in  Santa  Cruz  County.    With  this information  the
groundwater storage potential in this area  is  determined.
(p 45-48)

Er40] '
The purpose of this  study was  to  identify  the first- and  second-
order  hydrologic  boundaries within  the Tucson  Basin using  the
gravity method.  The following hydrologic  information is  included
in the report:
-major aquifers in the area are described,
 Quaternary alluvium.
 Tertiary-Quaternary sediments of the Basin Fill units.
 Pantano units.
-Groundwater contour map.  (plate 9)
-A discussion of the groundwater gradients  in  the area,
 cause for the area of high gradients.
(p 38-41)

Cr51]
Occurrence and movement of groundwater in the  Swab  study  area  is
discussed.  The following  is included:
—source of ground water.
-mechanisms of recharge and discharge of the aquifers.
-direction of ground water movement.
-rate of ground water movement.
(p 9)

[r51]
Impacts of development on pumpage and  water level decline  in  the
Swab study area are discussed,  (p 12-14)

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                                                                              72
 [r52]
 The  hydrologic  units  (Nogales formation,  older alluvium, younger
 alluvium) in the Nogales study area are discussed.  The following
 aquifer properties are discussed:
 -rock type.
 -permeability .
 —well yields .
 -depth of hydrologic unit.
 -hydraulic relationship between younger and older alluvium.
 -recharge sources.

 Cr53]
 Aquifer  properties  and  geohydrology  of the  basins  in  the
 Southwest  Alluvial  Basins  study  area  are  discussed.    The
 following information is included :
 -hydrologic units .
 -thickness of hydrologic units.
 -rock types and descriptions.
 -aquifer boundaries .
 —structural influence of groundwater flow.
 (p 31-35)

 Cr62]
 The  three water bearing geologic units  in the  Nogales study area
 are  discussed.  The following information is provided:
 -permeability.
 -well yields .                  .
 -thicknesses.
 (p 3)

 [r78]
 Map  showing changes in  water levels,  amounts of  ground  water in
 storage, and ground water pumpage for  the  state of Arizona.
Water resources in the PAG  study  area  are  discussed.   A sampling
program was undertaken in the  summer  of 1978 in which  129  wells
were  sampled.    The following  water  quantity information  is
included :
-annual average flow in the  Santa Cruz River.
-description of aquifer material.
-well yields .
-estimated natural groundwater  recharge.
-amount of groundwater in storage.
-groundwater pumpage and  water-level decline.
-sources of recharge and  estimated amounts  from  each source.
—flow patterns in the area.
-rates of groundwater movement.
-water level hydrographs.  (appendix B)
(p 5-16)

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                                                                               73
A sampling program was undertaken  in the summer of 1978 in which
129 wells  were  sampled.    The  following information  is included
from each site:
-well location.
-type of well.
-casing diameter.
-depth to static water level.
-date measured.
-instrument used to make  measurement.
-elevation of measuring point.
-elevation of static water level.
(appendix A-2)

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                                                       74
AQUIFER PROPERTIES

-------
                                                                               75
 [1]
 Aquifers  described  for  Nogales  Wash  Study  Area.    Following
 information  included in  this reference:
 -Units  containing aquifers and  stratigraphic  position.
 -Confined  or unconfined  conditions of aquifers.
 -Hydraulic Conductivity  of aquifers (ft/day and  cra/s).
 -Average transmissivity  of aquifers.
 -Specific  yields of aquifers..
 -Sources of  groundwater  of these aquifers.
 -Thickness'  of aquifers.
 -Well yield  ranges (gpm).
 -Hydraulic relationships of aquifers.
 (p 52-54).

 [1]
 Depth to groundwater for Aquifers in Nogales  Wash Study  Area
 (p 50-51).

 C6]
 Aquifer properties for the  Buena Vista  Study Area are described.
 Included is  the following information:
 -Types of  aquifers.
 —Water bearing characteristics and productivity.
 -Hydraulic interconnection.
 -Occurance of groundwater in each water bearing  unit.
 -Water levels and head distributions for water bearing units
 —Groundwater movement.         '                           •  •    "
 -Permeability.
 -Hydraulic conductivities.
 -Groundwater flow directions.
 (p 38 - 45,  figures 14 - 15).

 [6]
 Changes in storage for  the  hydraulic system  encompassed  in THe
 Buena Vista  Study Area (p 62 - 64,  figure 19,  table 7).

 [13]
 Description  and generalized  distribution  of  aquifer materials in
 the alluvial basins of  Arizona and adjacent  parts  of California
 and New Mexico.

 [35]
 Quantitative  Characteristics  for Aquifers  in the  Sonoita Creek
 Basin are presented.   Information included as follows.
 -Transmissivity.
-Permeability.
-Storage coefficients.
—Specific capacities.
 (p 43-50).

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                                                                              76
 [36]
 The  Sonoita  Creek  Aquifer is  described.   Information included  as
 follows:
 -Geology of the Aquifer and  its overlying and underlying units.
 -Unit by unit description of the water bearing units in the
 Sonoita Creek Aquifer. Includes the following:
  unit thicknesses
  lithology
  permeability
  types of wells in each unit
  production capabilities of each unit
 -Extent of Aquifer and its units.
 -Hydraulic properties including transmissivity and storage
 coefficient.
 (p 11-16).

 [37]
 Hydraulic properties of  the geologic  formations  that  make  up the
 Cienega Creek  study  area  are  described.    Included  is the
 following information:
 -Transmissivity for various  locations in the basin.
 -Storativity values and it's spatial distribution.
 -Aquifer types (confined vs. unconfined).
 -Hydraulic properties related to fracturing in selected units.
 (p 16-19).

 [37]
 Groundwater levels  and  movement for the Cienega  Creek  basin are
 described, information included as follows:
 -Groundwater level records for selected wells.
 -Groundwater level contour map for the study area.
 -Subsurface flow directions.
 (p 19-24).

 [39]
Aquifer property information  for  Tubac Valley  Country Club
Fairway  Estates  is  presented.    Information   includes
transmissivity and storage coefficient data  (p 4-12  -4-14).

 [40]
Aquifer characteristics  for  the Tubac Valley area  ar  described.
 Information included as follows:
-Transmissivity.
-Storativity.
-Depth and thickness of aquifer.
-Areal extent.
-Drawdown and recovery  test  data.
 (p 4-13 - 4-24,  appendix A).

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                                                                              77
[43]
Aquifer  charateristics for  the Wingfield  Cattle Company  study
area, near  Tubac,  Santa Cruz County  is  described.   Information
included as follows:
-Description of hydrogeologic units.
-Aqufer thickness and Areal extent.
-Volume of groundwater in storage.
-Transmissivity and storativity.
-Recharge characteristics.
(p 4-4 - 4-7, 4-21 - 4-22).

[51]
Aquifer  characteristics  for  the  Sonoita  Creek Watershed  are
presented.  Information included as  follows:
-Aquifer depth, width, and  areal extent.
-Hydraulic conductivity.
-Water table slope.
-Evapotranspiration rates.
(p 31-39).

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                                                      78
WELL INFORMATION

-------
                                                                               79
 [1]
 Information for wells located along the Santa Cruz River South of
 International Waste  Water  Treatment Plant (IWWTP).   Included is
 the following information:
 -ID No. for cross referencing database and figures
 -REF NO. for signification of data source(s).
 -Well owner ID
 -Location
 -Date drilled
 -Well Depth
 -Perforation Interval
 -Well Elevation
 -Well use
 -Water level in feet below land suface
 -Yield (gpm)
 -Casing Diameter
 -Water level elevation in feet above mean sea level
 -Water Quality Data - Signifies whether available for well
 -Arizona well registration  number
 -Misc. Remarks
 (appendix A, p A-2 - A-5).

 [1]        •
 Information for wells located along the Santa Cruz river north of
 the IWWTP.   Included is the following information:
 -ID No. for cross referencing database and figures
.-REF NO.  for signification  of data source(s).
 -Well owner ID
 -Location
 -Date drilled
 -Well Depth
 -Perforation Interval
 -Well Elevation
 -Well use
 -Water level in feet below  land suface
 -Yield (gpm)
 -Casing Diameter
 -Water level elevation in feet above mean sea level
 -Water Quality Data - Signifies whether available for well
 -Arizona  well registration  number
 -Misc. Remarks
 (appendix A,  p A-28 - A-30).

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                                                                               80
 [1]
 Information  for  wells  located  adjacent to the Nogales  Wash  Study
 Area.  Included is the following information:
 -ID No. for  cross referencing database and figures
 -REF NO. for signification of data source(s).
 -Well owner  ID
 -Location
 -Date drilled
 -Well Depth
 -Perforation Interval
 -Well Elevation
 -Well use
 -Water level in feet below land suface
 -Yield (gpm)
 -Casing Diameter
 -Water level elevation in feet above mean sea level
 -Water Quality Data - Signifies whether available for well
 -Arizona well registration number
 -Misc. Remarks
 (appendix A, p A-13 - A-17).

 [1]
 Information  for  wells  located  within the Nogales Wash  Study  Area
 as defined by the report.  Included is the following information:
 -ID No. for cross referencing database and figures
 -REF NO. for signification of data source(s).
 -Well owner ID
 -Location
 -Date drilled
 -Well Depth
 -Perforation Interval
 -Well Elevation
 -Well use
 -Water level in feet below land suface
-Yield (gpm)
-Casing Diameter
-Water level elevation in feet above mean sea level
 -Water level Date (when elevation taken)
 -Water Quality Data - Signifies whether available for well
 -Arizona well registration number
-Misc. Remarks
 (appendix C, p C-2 - C-10).

 [1]
Well and water quality data  and  information  on facilities having
underground storage tanks and EPA identification numbers
 (plates 1-4).

 [1]
 Wells  located  outside the  Nogales  Wash  Study area  adjacent to
 Nogales Wash/Potero Creek and the Santa Cruz River (plate 5).

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                                                                             81
[2]
Groundwater  wells  proposed  for  sampling  in  the  Nogales
Wash/Potrero Creek area.   Included  is  the  following  information:
-ID No. for well database cross  referencing.
-Location by Township,  Range,  Section,  and Quadrent.
-Well owner ID.
-Arizona Department of  Water Resources  Registration  Number.
-Contact and phone number (well  owner  or representative).
-Date drilled.
-Well depth.
-Casing Diameter.
-Perforation interval.
—Pump type.
-Well use.
-Water level and date taken.
-Yield.
-Water quality data.
-Dates sampled.
-Remarks.
-Sampling method.
(p 21-25).

[3]
Discussion of principal  well  supply fields  for  the  City  of
Nogales Arizona (p 3, figures  5-6).

[6]         .
Selected well information for  The Buena Vista  Study Area
(p 38 - 45, figures 19, 20 ,22,  A-l - A-3,  A-5 - A-9, table A-l).

[7]
Selected  well information  for  the City of Nogales,  Town  and
Country Terrace,  Valle   Verde,  Tubac  Valley,   and Rio  Rico.
Information included as follows:
-Pumping amounts 1980-1985.
-Pumping records, historic.
-Water withdrawel and use reports.
-Department of Water Resources report on audits of well reports.
-Metering history of supply  wells.

[17]
Description and location  of wells inside the  RHM&S Water Company
certificated service area (p 5-9).

[21]
Inventory record  of unregistered and registered  wells owned  or
used by the City of Nogales, Arizona  (appendix B,  table 2,
plate 2).

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                                                                              82
[21]
Inventory  record  of  unregistered  and registered wells within the
Water Serice Area of Nogales, Arizona and other surrounding lands
(appendix  C, table 3, plate 3).

[21]
Photocopies  of  various  completed forms  for  wells owned  by the
City of  Nogales,  piezometer wells owned by The City  of Nogales,
and  wells  owned by  private  individuals  whose  wells  were  or are
used by The City of Nogales.  Included information as follows:
-Change of well information.
-Notice of intent.
-Well driller's report.
-Registration of existing wells.
(appendix  D).[20]
City of  Nogales public water system  pumping  records  are handled
by  Ken  Horton.   These  records  are available  upon  request.
Information in the records are as follows:
-Well field.
  Santa Cruz River
  Meadow Hills
  Mariposa
  Escalada
  Kino Spring
-Well number in each field.
-Well status (working, not working, emergency supply)  .
-Water use (domestic or turf).
-Water level records (per month).
-Amount pumped (per month).
-Gallons metered (per day).

[25]
General description of the water withdrawals by pumping
(p 27-35).[26]
Depth to water in feet from measuring point for Santa  Cruz County
1940-1961  (p A-17 - A-19).

[27]
Depth to water in feet from Measuring point for Santa  Cruz County
1940-1965  (p A-51 - A-54)

[28]
Represented  well data  for  the  Santa  Cruz  Valley,   Santa  Cruz
County,  Arizona presented.  Information included as follows:
-Location  (township,  range, section).
-1970 depth to water.
-Water level changes.
-Well depth.
-Well discharge.
(p 34-36).

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                                                                              83
[35]
Selected  well  information  for  the  Sonoita  Creek  Basin  is
described.  Information included as follows:
-Pumping test data for various observation wells.
-Transmissibilities for selected wells.
-Specific capacities for selected wells.
-Discharges.
-Well inventory with following information;
 year drilled
 depth
 type of well
 diameter
 type of aquifer
 use
 static water level
 discharge
 well number.
(p 19-24, 50-55, appendix 1-2).

[36]
Generalized information  on  pumpint in  the  Sonoita Creek Aquifer
is described.  Information included as follows:
-Groundwater discharge due to pumping.
-Practical sustained yields.
-Municipal pumping demands.
-Agricultural pumping demands.
-Drawdown due to pumping of  city wells.
-Drawdown due to pumping of  irrigation wells.
(p 22-23, 27-34).

[39]
Selected well  information for Tubac  Valley  Country  Club Fairway
Estates is presented.  Information included as follows:
-Well location.
-Water levels.
-Well development and testing proceedures.
-Drillers logs.
-Anomalies in water level data.
-Drawdown and recovery curves.
(p 4-12 - 4-13, 4-15 - 4-24, appendix A, appendix B).

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                                                                              84
[41]
Descriptions of  well  characteristics for  selected  well sites in
the  WDC Partnership  study area  are  presented.   Information
included as follows:
-Aquifer test and development.
-Well history.
-Discharge.
-Aquifer Charactaristics at well;
  Transmissivity
  Coefficient of storage
-Drillers logs
-Well development data
(p 4-10 - 4-17, appendix A).

[42]
Well information  from the Arizona Department  of  Water Resources
well registration reports.   This  information may be  selected by
well registration  number  or  Township and  range  location.   For
this report a  printout  was obtained for all registered wells in
Township 20 South, Range 12 East through Township 24 South, Range
16 East.  This  area covers all of Santa Cruz County.  Information
containted on this printout is as follows:
-Well location including Township, Range, Section, Quarter
 Section.
-Arizona well registration number.
-Well owner.
—Pump Capacity of well where aplicable.
-Well depth.
-Water level in well.
-Casing diameter.
-Depth cased.
—Water use.
-Drawdown for certain wells.
-Drillers licence number if applicable.
-Well construction date.
-Well yield in  gpm where applicable.

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                                                                              85
[43]
Well  data  and  related  information  for the  Wingfield Cattle
Company  study  area,  near Tubac, Santa  Cruz  County is presented.
Information included as follows:
-Well data information including;
  Location
  Name of well
  Date drilled
  Depth
  Casing depth, diameter, and material
  Use of water
  Water levels and date
-On site testing of wells for basic hydraulic data.
-Drawdown and recovery curves for selected wells.
-Impacts of projected pumpage.
-Results and interpretation of basic well data.
(p 4-1 - 4-4, 4-7 - 4-16, 4-17 - 4-22, 5-1 - 5-6, Appendix A).

[45]
Selected  well  data  for  the  Sonoita  Creek  Ranch study  area is
presented.  Information included as follows:
-Well locations
-Well construction.
-Drillers logs.
-Well tests and data.
(p 5—1 - 5-16, Appendix A, Appendix B, Appendix C).

[47]
Well  printout  information for  all  of  Santa  Cruz County, • AZ is
presented.  Information contained in the printout is as follows:
—Source of data.
-Site ID No.
-Local Well Number.
-County.
-Primary use of vater.
-Depth of well (feet).
-Discharge.
-Date discharge measured.
-Water level (feet).
-Water level date.
-Water level status.

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                                                                              86
[55]
Well  information  for  the  Upper  Santa  Cruz River,  Santa Cruz
County, Arizona is described.  Information included as follows:
-Well No.
-Location.
-Driller.
-Date completed.
-Water level
-Depth of well
-Date of water level measurement.
-Use of water.
-Misc remarks.
-Drillers logs of wells.
-Graphs showing water level fluctuations in selected observation
 wells.
(p 9-12, 31-40, Figure #2).

[68]
Map showing depth to water in  wells  in the Tucson area including
Santa Cruz County.  Information includes:
-Various well locations.
-Depth to water in wells.
-Alluvial deposits in feet below land surface.
(Sheet 1).

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                                                    87
WATER QUALITY

-------
                                                              88
GENERAL WATER QUALITY INFORMATION

-------
                                                                              89
Cr2]
The  groundwater  sampling plan  for  the Earth  Technology
Corporation sampling program in and around the Nogales Wash Study
Area  conducted  in August and  September  1987 is  summarized,  the
following information is provided:
-Summary of analyses requested.  (p 1)  (table 1-1)
-Maps of the study area and  well location  of  wells to  be  sampled.
 (p 4-7) (table 6-1)
-Background and objectives of the sampling program,  (p 8-11)
-Rationale for sample locations, analyses  requested  and number of
 samples.  (p 12-18) (table  4-1)
-Estimated sampling schedule, (p 19)
-QA/QC methods and procedures including:
 sample collection process.
 equipment decontamination.
 QA/QC control samples.
 laboratory QA.
     (p 20-29)

03]
This report  discusses  the  following  groundwater  sampling
investigations:
-Santa Cruz County Health Department investigation of  17 wells
 located within the Nogales  Wash study area, conducted during
 November and December 1986  and January ,  February 1987.
-Arizona Department of Health  Services investigation of 10  wells
 in the Nogales Wash study area on May  12, 13,  14, 1987.
-Ongoing investigation by Earth Technology Corporation of wells
 in and surrounding the Nogales Wash study area.
-Ongoing investigation by Ken  Schmidt and Associates of wells  in
 the area of IWWTP.
-Ongoing investigation by Woodward-Clyde Consultants of wells  in
 vicinity of C. G. Conn Ltd.

[r4]
Discussion of  water  quality testing in Agua Prieta, Nogales  and
Cananea.  Samples  were tested  from four  city domestic drinking
water wells  in north,  northwest Agua Prieta  and surface  water
samples from  Agua Prieta River, including  sewage effluent from
Douglas and Agua  Prieta were analyzed.  Samples of  surface  water
and sediment in Nogales near the Maquiladora  Industrial Park were
analyzed.   Samples from  Cananes  residents  drinking water  wells
and surface water samples from San Pedro River were  analyzed.Test
results included coliform  levels,  mineral  levels  and organic
chemical levels.

[rll]
Potential impacts  on water  use  and potential  risk to  water
resources  of  the  discovered  VOC contaminants  is  discussed.
Potential  sources of VOC  contamination in the Nogales  Wash  study
area  is  also discussed.  Findings  from the  reconnaissance   of
properties from the following areas  are included:

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                                                                             90

[rll]  continued.

-Nogales Wash.
-Ephraim Canyon.
-Mariposa Canyon.
-Potrero Canyon.
(p 45, 73-78, 79-84)

[r!2]
A monitoring plan for the Nogales IWWTP study area is discussed.
The following information is  included:
-monitoring instrumentation.
-sample containers,  preservatives, and holding times.
—sample shipment.
-sample and measurement  documentation.
-chain-of-custody procedures.
-quality control.
-analytical laboratories.
-sampling procedures.
-effluent monitoring.
-streamflow monitoring.
—groundwater monitoring,
 monitor wells.
 off-site wells.
(p 58-74)

Cr27]  -                      -
Table 2 shows the results of soil sampling of the land treatment
areas on  April   28,  1986, five  soil  samples  were  taken  and
analyzed for the following:
-methylene chloride.
-acetone.
-1,1-dichloroethylene.
-chloroform.
-1,1,1-trichloroethylene.
-trichloroethylene.
-toluene.
-ethyl benzene.
-methyl ethyl ketone.
-benzene.

Cr30]
C.  G. Conn  Facility  site  history,  present  operations  and
conditions is discussed.   (p  2-1 - 2-8)

Cr30]
Appendix A shows the  results  from soil sampling (includes 11 soil
samples)  in  land  treatment  areas.    Figure  A-l  shows  the
locations of  air sampling monitors.  The  samples  were  analyzed
for  the  following constituents;  1,1,2,2-tetrachloroethene ,
1,1,1-trichloroethene,   toluene,   methylene  chloride,  metals
(copper,  lead, nickel, silver, cadmium, chromium, zinc).

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                                                                              91
 Cr30]
 Appendix B contains the following information:
 -Surface and subsurface soil total digestion analysis.
 -Enrichment  ratios  for metal  concentrations  in surface  and
 subsurface soil samples.
 -Volatile organics found in surface and subsurface soil samples.
 -EPA  method  624  analysis  of soil  samples below  pH adjustment
 tank.
 -Location of surface samples and subsurface boring locations.
 -Surface soil cadmium concentrations showing area  of potentially
 hazardous levels.

 [r30]
 Appendix C contains the phase I  closure activities, the following
 information is included:
 -Summary of  sample analyses for concrete tank, clay piping,  and
 PVC piping.
 -Analytical results for,
 tramp material.
 for impoundment surface soil samples.
 for impoundment subsurface soil samples.

 Cr30]
 Appendix D  contains  the  phase  II  closure  activities,  the
 following information is included:
 -Results of  surface soil  gas investigation near pH  adjustment
 tank.                                       '•'.•••
 -Volatile  organic  compounds found  in soil boring  samples  and
 laboratory blanks.
 —Analytical results versus  depth for soil  samples  in  the vicinity
 of Ph adjustment tank.
 -Contour  maps  of  1,1-DCE  concentration  and  1,1,1-TCA
 concentration  and  TCE concentration  and carbon  tetrachloride
 concentration in soil  gas  in the vicinity of the  pH    adjustment
 tank.

 Cr31]
 Discussion of the  results from  a soil  gas study  to identify  the
 horizontal and vertical extent of the  VOC contamination at C.G.
 Conn Facility.  Each soil gas sample was  analyzed  for, TCA, TCE,
 PCE, and  DCE,  section  4-1.   Appendix C  contains  the complete
 soil gas investigation  report.

 [r31]
 Section 9.0  of  the  report discusses a pilot  soil  gas vapor
 extraction system.
 -Map showing locations  of soil gas sampling points, figure 4-1.
-Map showing TCA concentration contours in soil  gas, figure 4-2.
-Map showing  1,1  DCE concentration  contours in soil gas,  figure
 4-3.
-Map showing PCE concentration contours in soil  gas, figure 4-4.

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                                                                             92
[r57]
It  is the  duty  of the  Office  of Water  Quality (OWQ) , Arizona
Department of Environmental Quality (ADEQ), to keep track of the
compliance  status  of Arizona's  public  water  systems  with the
State's  drinking  water rules and  the  Safe  Drinking  Water Act.
The  Arizona  Safe Drinking Water  Information System (ASDWIS)  is
designed to provide a  computerized information management  system
to  record,  store,  analyze,  and  retrieve  data  about Arizona
drinking water systems.  The  system determines  compliance of each
water system  to  maximum  contaminant  levels  and  monitoring
regulations.   It stores  and  can retrieve any  of  the  following
information:
-water system inventory.
-water source.
—lab  sample analysis
 bacteriological.
 turbidity.
 inorganic chemicals.
 synthetic organic chemicals'.
 volatile organic chemicals.
 disinfection by-products (TTHM).
 radiochemicals.
 corrosivity.
-sanitation survey dates.
-operation and maintenance ratings.
-enforcement and  public notice data of violations.
-list of certified laboratories.

[r57]
The  Facility  Files  are loosed leaf, hard  copies of information
from the water systems dating back to October 1974,  they contain
the following information:
-all laboratory results.
-letters stating noncompliance  or deficiencies  and expected
 remediation.
-any updates to sample frequency.

[r58]
This report is compiled  annually by  the  Office of  Water Quality
and it summarizes the  compliance  status of  Arizona's public water
systems  with  the  states drinking  water rules.   This is  the
eleventh report  of  this  type.   See  reference  [r58]  in  water
systems  section,  sub-section   distribution  systems  for  the
information contained  in  this report.

[r59]
This  booklet discusses  the requirements  for  operators  of  small
water systems to comply  with the Safe  Drinking  Water  Act.   See
reference  Cr59]  in  the  water  systems  section,  distribution
systems  sub-section  for  the  information  contained  in  this
booklet.

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                                                                              93
 Cr65]
 This  file contains the  Facility Management Plan  for  the United
 Musical  Instruments U.S.A.,  Inc.,  C.G.  Conn,  Ltd.,  Nogales   ,
 Arizona,  it  is a  living  document that is  updated for EPA every
 quarter.   This  document  discusses  the cleanup  of gr.oundwater
 contamination  caused  by  the  activities  at this  facility.   The
 following information is included:
 -facility description
 manufacturing and plating operations.
 hazardous waste units.
 contents of industrial waste streams.
 surface impoundment discharges.
 -workplan for cleanup of groundwater contamination.
 -environmental significance.
 -groundwater monitoring compliance.
 -complete background history of correspondence.

 Cr65l
 This file contains the Groundwater Quality Protection Permit, for
 the  City of  Nogales,  Meadow  Hills  Country  Club  Golf  Course
 Storage  Ponds  to  be  used for water  released  from  the United
 Musical  Instruments  groundwater reclamation  plant.   The report
 discusses the following:
 -disposal methods.
 -discharge source limits.
 -maximum disposal limits for 12 volatile organic compounds.
 -effluent monitoring.
 —ambient groundwater monitoring.
 —sampling, analytical,  and reporting requirements.
 -contingency requirements.
 -post-^closure plan.
 -general responsibilities to comply with the permit.
 -groundwater quality standards.

 [r66]
 This  is  the  sampling  plan  for  the  Nogales  Wash  Study  Area
 sampling  program  conducted  in  summer of  1987 in  which  18 water
 supply  wells  and 17 piezometers  were  sampled and  tested for 38
 different volatile organic compounds.   The  detection of  VOC's in
 the  groundwater  in previous  analyses  prompted this study.   The
 plan contains the following information:
 —summary of analyses requested.
 -location and topography maps  of the Nogales Wash Study area.
-objectives of sampling.
-rationale for sample  locations.
-rational for analyses  requested.
 -rationale for number  of samples.
 -sample collection process.
-QA/QC samples.
 (no page numbers, whole report)

-------
CrllS]
This ±s a report published annually by the Arizona  Department  of
Environmental Quality  concerning Arizona  ground  water  quality.
It  contains  all  groundwater sampling  results  and  enforcement
actions carried  out by ADEQ for  that year.

-------
                                                                            95
SURFACE WATER QUALITY / INORGANIC AND ORGANIC CHARACTERISTICS

-------
                                                                             96
Cm]
Discusses surface  water quality samples and effluent samples from
a sampling program  south  of  the  IWWTP conducted by  Schmidt  and
Associates during  May and  June of 1988, the following information
is included;
-sample date
-temperature
-specific conductance
-PH
-nitrate
-ammonia nitrogen
-organic nitrogen
-1,1,1-TCA
(p 21-24)

Crll]
A  discussion  about three surface  water  samples collected  in
Nogales Wash  by ADHS and  by SCCHD in November and December 1988,
and January 1987,  results  show detected VOC's.  (p 21-24)

Crl2]
The  chemical  quality  of  streamflow  in  the  study  area  as
determined from  several  sampling  programs  in  the  area  is
discussed. Sampling programs are as follows:
1 -   The U.  S.  Geological Survey, Arizona District has collected
      samples  during several  sampling rounds  at three different
 locations on the  Santa  Cruz .River,  downstream  and  upstream from
IWWTP.  Sampling was conducted during the late summer  or fall of
the following  years  1969-70 and 1976-79.  The     samples  were
collected for  analyses of major inorganic    chemical
constituents,  nitrogen forms, trace metals,  and   pesticides.
Results of the chemical analyses are given in     appendix  A  of
the report.
2 -   The water sampling  program conducted during  April-October
 1981 by Southeastern Arizona Governments Organization
(SEAGO) sampled  streamflow from Nogales Wash and the Santa  Cruz
River for analyses of selected inorganic chemical
constituents  (calcium,  magnesium,  sodium,  carbonate,
 bicarbonate,  sulfate,  chloride,  fluoride,   iron,  total
 phosphate) and nitrogen forms (nitrate, Kjeldahl  nitrogen,  and
ammonia).    Sampling  locations  were  as follows;  near the
 international boundary,  1/2  mile  north  of  the  international
 boundary, Rio  Rico,  Tubac,  Amado  Bridge,  and Chavez Siding.
 Results of these  analyses are given in Table  1 and Appendix A of
the report.
3 -   Five sampling rounds  were  conducted  by Ken  Schmidt  and
 Associates during May 5 through June 3, 1988  at the
 following locations;  Rio  Rico,  Rancho Santa  Cruz,  Carmen,
 Chavez Siding,  Tubac, Sonoita Creek,  Peck  Canyon,  effluent from
the Nogales IWWTP  collected prior to discharge into the     Santa
Cruz River, and  streamflow in Nogales Wash immediately
upstream of the  Nogales IWWTP.  The water samples collected

-------
                                                                             97

 [r!2] continued.

      were analyzed for inorganic  chemical  constituents, nitrogen
 forms, total organic carbon,  and  trace  organic chemicals.
      Results of  the  chemical  analyses  and  field  measured
 parameters are given in Appendix  A  of the  report.
 A  map  showing locations  of streamflow  and  effluent sampling
 sites is also given.

 [rl2]
 Results  of  the above sampling  programs  are discussed  and in
 particular variations with  location  of  the following  parameters
 are discussed: electrical  conductivity,  temperature, pH, nitrate,
 ammonia-N, organic  nitrogen,  1,1,1-TCA,  arsenic,  barium,  and
 chromium.  (p 5-16)

 [r!2]
 Chemical analyses of effluent from the Nogales IWWTP during May-
 June 1988  is  discussed.   The results of  analyses  for inorganic
 chemical constituents, nitrogen forms,  and  total organic carbon
 are  show  in  table  6,  and  comprehensive  chemical  analyses  and
 historical analyses of the  effluent  from the  IWWTP  are given in
 appendix H  of the  report.  Impact  of effluent discharge  on the
 chemical quality  of  streamflow  in  the  Santa Cruz  River is
 discussed.  (p 52-54, 54-55, appendix A, appendix H)

 [r!4]            --         -                     .  .      .               -
 General  discussion  of surface water  quality  in the  Santa Cruz
 River study area as  of 1977.   Generally contain low concentration
 of dissolved solids  and  are  of low sodium hazard. Bacteriological
quality is generally  good.   (p 2.64-2.66)

 Cr49]
A general discussion of  the  current  surface  water  quality  in
Santa  Cruz  County.    The  effect  of  suspended-sediment
concentrations on the use of water is discussed, (p 11-12)

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                                                                              98
[r52]
Surface water  quality at selected locations on  and tributary to
the  Santa  Cruz  River  are discussed. Actual chemical  analyses at
five different  locations  are  compared  to wastewater  treatment
plant effluent  chemical  quality.,   Each  sample was  analyzed for
the  following constituents: (p 5-3 to 5-5, table 5-1, plate 5-1)
-Iron.
-Calcium.
—Magnesium.
—Sodium.
-Bicarbonate.
-Carbonate.
-Sulfate.
-Chloride.
-Fluoride.
-Nitrate.
-Total dissolved solids.
-Total hardness as calcium carbonate.
-Alkalinity.

Cr55]
This printout  includes  water  quality  data  from  the  following
surface water  gauging stations  in  Santa  Cruz  County,  over  a
period of time from 1968  to 1979:
-Santa Cruz River at Rio  Rico.
-Santa Cruz River near Lochiel.
-Santa Cruz River near Nogales.
The  following information is included:
-location (latitude and longitude).
-date sampled.
-time sampled.
-specific conductance.
-pH.
-temperature.
-total dissolved solids.
-sodium adsorption ratio  (SAR).
-hardness as calcium carbonate.
-sodium.
-potassium.
—calcium.
-magnesium.
-chloride.
-alkalinity as calcium carbonate.
-sulfate.
-fluoride.
-silica.
-nitrate + nitrite.
-ortho-phosphorus.
-ortho—phosphate.
-aluminum.
-arsenic.
-barium.

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                                                                               99

 [r55] continued.

 -beryllium.
 -boron.
 —cadmium.
 —chromium.
 -cobalt.
 -copper.
 -iron.
 -lead.
 -lithium.
 -manganese.
 -molybdenum
 -selenium.
 -vanadium.
 -zinc.

 [r57]
 Requirements of public water systems in Santa Crtfz County. If any
 surface  water  sources are  used by  the  system,  or  if  there is
 possible  contamination  of the  groundwater  sources  by natural or
 man-made  changes,  then  the water  system  is required  to monitor
 turbidity  levels  every  day.   The turbidity report  contains the
 following information:
—water system name and address.
-water system code number.
 -method of analysis.
 -laboratory results (turbidity units) .
 -sample type.
 -sample date.
-analysis date.
-maximum contaminant levels (MCLs).

 Cr57]
The  sampling  frequency  for water  systems using  a  surface water
 source is as follows:
—inorganics                  once per year.    (see inorganics)
-synthetic organics          every three years, (see organics)
-radionuclides               every four years.   (see inorganics)
-volatile organics           every five years.   (see organics)
-corrosivity                 twice a year.   (see inorganics)
-total coliform              once per month.  (see microbials)
-turbidity                   once per day.  (see above)

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                                                                             100
[r61]
Grab samples are collected from midstream in the Santa Cruz River
four times (quarterly) each year at the following locations:
-Rio Rico, 1.7 miles downstream from the IWWTP.
-Rancho Santa Cruz, 6.7 miles downstream from the IWWTP.
-Carmen, 11.4 miles downstream from the IWWTP.
The samples are analyzed for the following parameters:
-nitrate as N.
-Total Kjeldahl Nitrogen.

[r61]
This file contains results of stream samples collected from 8-11-
86 to 4-13-87, at the following locations:
-East Nogales Wash at the U.S. Border.
-Nogales Wash, Firestation B.
-Santa Cruz River at the U.S. Border.
-Santa Cruz River, Kino Springs Bridge, 3 miles north of border.
-Santa Cruz River at Rio Rico.
-Santa Cruz River at Continental.
-Santa Cruz River at Cortaro.

Cr61]
Each  of  the above  samples  were  analyzed  for  the  following
parameters:
-electrical conductance.
—dissolved oxygen.
-field pH.                              -
-air temperature.
-water temperature.
-alkalinity.
-carbonate.
-bicarbonate.
-chloride.
-fluoride.
-nitrate as nitrogen.
-Total Kjeldahl Nitrogen.
-pH.
-phosphate.
-sulfate.
-total dissolved solids.
-total suspended solids.
-silver.
-arsenic.
-barium.
-boron.
—chromium.
-cadmium.
—calcium.
-copper.
-iron.
—potassium.
—mercury.

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                                                                             101

[r61] continued.

—magnesium.
-manganese.
-sodium.
-lead.
-selenium.
—zinc.

[r61]
This  file  contains  laboratory results  of  the Nogales  IWWTP
effluent monitoring samples  collected  in 1985  and  1986.   Other
sample  results  can be obtained  from the ADEQ,  Office  of  Water
Quality, Water  Pollution  Compliance Unit.    Effluent is  sampled
after final treatment  at the point of discharge 'to the Santa Cruz
river  and  analyzed  for  the  following   parameters  at the
frequencies specified:

Parameter                                    Frequency

flow rate                                    continuous
total residual chlorine                       daily
BOD                                          weekly
pH                                           weekly
settleable solids                            weekly
suspended solids                             weekly
fecal coliform bacteria                       weekly
nitrate as nitrogen                          monthly
organic nitrogen                             monthly
ammonia nitrogen                             monthly
copper            .                           monthly
mercury                                      monthly
total phosphates                             monthly
phenolics                                    monthly
arsenic                                      quarterly
barium                                       quarterly
lead                                         quarterly
chromium                                     quarterly
cadmium                                      quarterly
silver                                       quarterly
cyanide                                      quarterly
bromodichloromethane                         quarterly
bromoform                                    quarterly
bromomethane                                 quarterly
carbon tetrachloride                         quarterly
chlorobenzene                                quarterly
chloroethane                                 quarterly
2-chloroethylvinyl ether                      quarterly

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                                                                             102
[r61] continued.
chloroform
chlororaethane
dibromochlororaethane
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
dichlorodifluoromethane
1,1-dichloroethane
1,2-dichloroethane
1,1-dichloroethene
trans-1,2-dichloroethene
1,2-dichloropropane
cis-1.3-dichloropropene
trans-1,3-dichloropropene
methylene chloride
1,1,2,2-tetrachloroethane
tetrachloroethene
1,1,1-trichloroethane
1,1,2-trichloroethane
trichloroethene
trichlorofluoromethane
vinyl chloride
benzene
chlorobenzene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
ethylbenzene
toluene
major cations
major anions
fluoride
boron
iron
manganese
zinc
selenium
electrical conductivity
total dissolved solids
total organic carbon
acenaphthene
acenaphthylene
anthracene
aldrin
benzo(a)antracene
benzo(b)fluoranthene
benzo(k)fluoranthene
benzo(a)pyrene
benzo(ghi)perylene
benzyl butyl phtyhalate
quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quartwely
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     quarterly
     annually
     annually
     annually
annually
     annually
     annually
     annually
     annually
     annually
     annually
     annually
     annually
     annually
annually
     annually
     annually
     annually
     annually
     annually
     annually
     annually

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                                                                             103

Cr61] continued.

b-BHC                                   annually
d-BHC                                   annually
cis(2-chloroethyl)ether                      annually
ci s(2-chloroethoxy)methane                   annually
ci s(2-ethylhexyl)phthalate                   annually
cis(2-chloroisopropyl)ether                  annually
4-bromophenyl phenyl ether                   annually
chlordane                                    annually
2-chloronaphthalene                          annually
4—chlorophenyl phenyl ether                  annually
chrysene                                     annually
4,4'-DDD                                     annually
4,4'-DDE                                     annually
4,4'-DDT                                     annually
dibenzo(a,h)anthracene                       annually
di-n~butylphthalate                          annually
1,3-dichlorobenzene                          annually
1,2-dichlorobenzene                          annually
1,4-dichlorobenzene                          annually
3,3'-dichlorobenzidine                       annually
dieldrin  •                                   annually
diethyl phthalate                            annually
dimethyl phthalate                           annually
2,4:-dinitrotoluene                           annually
2,6—dinitrotoluene                           annually
di-n~octylphthalate                          annually
endpsulfan sulfate                           annually
endrin aldehyde                              annually
fluoranthene                                 annually
fluorene                                     annually
heptachlor                              annually
heptachlor epoxide                           annually
hexachlorobezene                             annually
hexachlorobutadiene                          annually
hexachlorethane                              annually
indeno(l,2,3-cd)pyrene                       annually
isophorone                              annually
naphthalene                                  annually
nitrobenzene                                 annually
n—nitrosodi—n—propylamine                    annually
PCB-1016                                     annually
PCB-1221                                     annually
PCB-1232                                     annually
PCB-1242                                     annually
PCB-1248                                     annually
PCB-1254                                     annually
PCB-1260                                     annually
phenanthrene                                 annually
pyrene                                       annually
toxaphene                                    annually

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                                                                             104

[r61] continued.

1,2,4-trichlorobenzene                       annually
4-chloro-3-methylphenol                      annually
2-chlorophenol                               annually
2,4-dichlorophenol                           annually
2,4—dimethylphenol                           annually
2,4-dinitrophenol                            annually
2-methyl-4,6-dinitrophenol                   annually
2-nitrophenol          .                      annually
4-nitrophenol                                annually
pentachlorophenol                            annually
phenol                                       annually
2,4,6-trichlorophenol                        annually

[r67]
This report  is  an interpretation  of  the data  on nitrate levels
obtained from four monitoring runs jointly conducted by SEAGO and
ADHS during  fiscal  year  1981-82.   The following  surface sites
were monitored during the four runs:
1.  April monitoring activities,
 -12 sites were monitored.  (6 surface sites)
      Nogales Wash.
      Santa Cruz River 1/2 mile north of the border.
      Nogales WWTP.
      Santa Cruz River at Rio Rico.
      Santa Cruz River at Tubac.
      Sopori Ranch spring.
2.  July monitoring activities,
 -20 sites were monitored.  (2 surface sites)
      Nogales WWTP.
      Santa Cruz River at Amado bridge.
3.  October monitoring activities,
 -8 sites were monitored.  (1 surface site)
      Santa Cruz River at Chavez Siding Rd.
4.  December monitoring activities,
 -4 sites were monitored.  (no surface sites)
(Tables 1,2,3,4)

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                                                                        105
GROUNDWATER QUALITY / INORGANIC CHEMICAL CHARACTERISTICS

-------
                                                                            106
 Cr4]
 Mineral levels from  well  samples,  surface  water  samples  and
 sediment samples from Agua Prieta,  Nogales  and  Cananea  are  given.
 Samples were  analyzed  by  Sundog  Ranch Road  Laboratory in
 Prescott,   Az.    The chemical  analysis  report  includes  the
 following information:
—sample description.
-sample location.
-sample date and time.
-mineral levels,
 arsenic.
 cadmium.
 chromium.
 copper.
 iron.                    '       .                          '
 lead.                                      '
 manganese.
 nickel.
 silver.
 zinc.
 selenium.

 Cr5]
This  report  discusses  nitrate-nitrogen  concentration  of  the
groundwater around  the  IWWTP.    Nitrate-nitrogen concentration
levels  in  groundwater  samples  from monitor wells  around  IWWTP,
were taken  over  a  fifteen year  interval  from 1973 through  1987.
The following information  is  included:  (p  6-12)
-well location.
-description of  well location.
—well number.
-type of well.
-date of sample.
-concentration of nitrate-nitrogen  in mg/1.

 Cr7]
A spreadsheet that includes data  from ADEQ  (Tucson) fixed station
sites on Nogales Wash and  on  the Santa Cruz River.  Sample  dates
range  from August  1986  through November  1987.   The  following
information on  samples  collected  from  six different  sites is
included:
-site identification number.
-sample date and time.
-STORET number.
—basin.
—agency (sampler).
-lab responsible for analyses.
-field parameters,
 air temperature.
 water temperature.
 dissolved  oxygen and field PH
 field electric  conductivity.

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                                                                             107

[r7]  continued.

-lab parameters,
 electric conductivity.
 pH.
 total suspended solids.
 calcium.
 sodium.
 potassium.
 magnesium.
 carbonate.
 bicarbonate.
 sulfate.
 chloride.
 total alkalinity.
 alkaline .phosphate.
 total Kjeldahl nitrogen.
 nitrate + nitrite.
 total protein.
 silver.
 arsenic.
 barium.
 boron.
 cadmium.
 chromium.
 copper.
 iron.
 mercury.
 manganese.
 lead.
 selenium.
 strontium.
 zinc.

Cr9]
This  file  contains lab  reports of  inorganic chemical  analyses
done  from  1964-1988 on  Valley  Verde  Water  Company  Wells  in
Nogales, Az.,  and radioactivity reports from  1980  and  1984,  the
following information is  included:
-determination of gross alpha,
 sample ID.
 total volume (ml).
 pCi/1.
-lab name and address.
—sampling date and time.
—sampling point—well number or exact location.
-sample appearance.
—water supply source.
-samplers comments.
-contaminant code.
—analysis method.

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                                                                             108

[r9] continued.

-samples were analyzed for,
 arsenic.
 barium.
 cadmium.
 chromium.
 fluoride.
 lead.
 mercury.
 nitrates.
 selenium.
 silver.
 alkalinity.
 calcium.
 chloride.
 copper.
 hardness.
 iron.
 magnesium.
 manganese.
 pH.
 sodium.
 sulfate.
 TDS.
 zinc.

CrlO]
This  file  contains  inorganic chemical analytical  results  of the
1988 groundwater sampling investigations  done by Earth Technology
Corporation, the  same  information is contained in  appendix  C of
reference  #11.  All samples  were analyzed  for   the  following
inorganic chemical constituents:
-bicarbonate.
-chloride.
-nitrate as nitrogen.
-sulfate.
—calcium.
—potassium.
—magnesium.
-sodium.

[r!2]
Historical chemical analyses for  water from monitor wells  (MW-1,
MW-2, MW-3, MW-4,  MW-5, MW-6, MW-7) in the study area is given in
appendix G of the report.  The following  information is included:
-cations (calcium, magnesium, sodium, iron,  potassium).
-anions (chloride, nitrate, sulfate,  fluoride, silica).
-total dissolved solids.
-hardness as calcium carbonate.
-total alkalinity as calcium  carbonate.
-boron.

-------
                                                                              109

 [r!2] continued.

-trace metals  (chromium, lead, mercury).
-field pH.
-field temperature.
-sample location.

 [r!2]
The  results of  the extensive  well  sampling  program  undertaken
during  May-June  1988,  by  Ken Schmidt  and Associates,  in  which
over  70  wells were  sampled  is  discussed.  The following  wells
were sampled for comprehensive inorganic chemical analyses:
 MW-1
 MW-2
 MW-3
 MW-A
 MW-5
 MW-6
 MW-7
 Underdown
 Ybarra
 Henson No. 3
 Dana No. 2
 Loew
 Qrebbs No.2
 CU-3
 Alegria          -          -                     .   .
 Tubac school
 Clark                                                   -
 Chapman
 Day.
 Rancho Santa Cruz
 North
 Palo Parada
 Verdugo
 Walker No. 1
 CU-52
 VIT
 New Tressle
 CU-21

[rl2]
Inorganic chemical,  nitrogen and organic carbon analyses of  water
from the above wells are included in appendix E of  the report and
includes the following information about each sample:
-pH.
-electrical conductivity.
-temperature.
-calcium.
—magnesium.
—sodium.
-potassium.

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                                                                             110

[r!2] continued

-carbonate.
-bicarbonate.
-sulfate.
-chloride.
-nitrate.
-ammonia nitrogen.
-organic nitrogen.
-fluoride.
-boron.
-total dissolved solids.
-iron.
-manganese.
-arsenic.
—barium.
—cadmium.
-lead.
-mercury.
—selenium.
-silver.
-total organic carbon.
-date of sample.

Crl2]
Water  samples  from more  than  40 other  wells in the  study  area
were analyzed for nitrate and chloride levels.   Results  of these
analyses are  given in appendix  F  of the report and  include the
following information:
-well location.
-local number.
—date sampled.
-temperature.
-electrical conductivity.
-pH.
-nitrate.
-chloride.

[r!2]
A  general  discussion  of  the  trends  seen in  the  results  of
electrical  conductivity,  chloride content,  and nitrate  content
throughout the study area is given,  (p 36-46)
The impact  of  effluent discharge on groundwater quality  and the
projected impact of the  expanded plant on groundwater conditions
is discussed, (p 55-58)

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                                                                             Ill
[r!3]
Discusses  the  possible sources  of  moderate  to high  nitrate
contents found in well water during the  June  1988  sampling  round
conducted by Ken Schmidt and Associates  in  the  IWWTP  study  area.
Water  from  five of  the 73  wells in  the  study  area that  were
sampled in  summer 1988  had  nitrate contents of 18  mg/1  or  more.
These wells are as  follows:
 (D-21-13)
           7dad     Allgeria
      7ddb     State Parks
      32cdc    Varam Stock
 (D-22-13)
      34dba    CU-8
      35cca    VIT
(p 1-5)
Crl4]
General discussion  of  the  groundwater quality i'n the  Santa  Cruz
River study area as of 1977.  Generally  TDS in the area  are  less
than 1000 mg/1,  the main problem in this  area  is increased  lead
and nitrate levels  in some localized locations.  A discussion  of
the  different  water quality  standards  set  for drinking  water,
industrial  water,  and   irrigation  water  is  included.
Concentrations of chloride,  fluoride,  nitrate,  lead,  and  sodium
considered detrimental  to human health are  given.   (p 2.64-2.69)

Crl6]
A brief discussion  of  the general  water  quality in the  Sonoita
Creek Watershed study area  is included.   Halpenny et  al.,  1964  is
referenced  for  the  information.   Total  dissolved  solids range
from 215 ppm to 1113, sulfate content is high up to  680  ppm, and
hardness is high, up to  800 ppm.  (p 34-35)

[r!7]
A general  discussion  of the  water  quality  in  the  Tubac  Valley
Water Co.  service  area.   Nine  different  well  water  sample
analyses are given,  of the nine, six are from groundwater  in the
younger alluvium, two are from groundwater in the older  alluvium
on the  east side of the valley,  and one is from groundwater  in
older alluvium on the west side of the valley.   Younger  alluvium
water is  of the  calcium bicarbonate type with moderately  high
sulfate levels.   The older alluvium  water  is of  the  sodium
bicarbonate type with low  sulfate levels.  Total  dissolved  solids
is less  and fluoride  is greater in the  older alluvium  water.
Table 4-6  shows the  results of the chemical analyses  and  includes
the following information:
-well location.
-date analyzed.
-laboratory name.
-calcium (mg/1).
-magnesium.

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                                                                              112

[r!7] continued.

-sodium.
-potassium.
-carbonate.
-bicarbonate.
-sulfate.
-chloride.
-nitrate.
-fluoride.
-total dissolved solids.
-specific conductance (micromhos).
-pH.
-which aquifer the sample was from.
(p 4-24, 4-25)

[r!8]
A general  discussion  of the water quality  in Tubac Valley Water
Company service area.   Four  well  water samples were collected in
July 1983.  An irrigation water analysis was done on three of the
samples by BC Labs.  This included analysis for the following:
-salinity.
-electric conductivity.
-chloride.
-sodium adsorption ratio (SAR).
-exchangeable sodium percentage (ESP).
-gypsum requirement.                    •   .
—fluoride.
-calcium.
-magnesium.
—sodium.
-nitrate.
-nitrite.
-carbonate.
-bicarbonate.
-chloride.
-sulfate.
-total dissolved solids.
-temperature.

[r!8]
One of  the  samples was analyzed by  Western  Technologies for the
following constituents:
-arsenic.
-barium.
-cadmium.
—chromium.
-fluoride.
-lead.
-mercury.
-nitrates.
-selenium.

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                                                                             113

[r!8] continued.

-silver.
-alkalinity.
-calcium.
-chloride. •
-copper.
-hardness.
-iron.
—magnesium.
-manganese.
-pH.
—sodium.
-sulfate.
-total dissolved solids.
                                                                 t
—zinc
(p 6-1 - 6-5)

[r!9]
A  discussion of the  water  quality in  the Tubac area,  the same
well  samples are discussed here  as in  the August  1983 report,
including one additional well from the older alluvium on the west
side  for the valley.   Table  4-5  shows  the  results  of  these
analyses and Figure  4-2 is  a piper tri-linear  plot  of the water
analysis.  In the appendix is the  lab report  of the  well sampled
February 1984 on the west side of the valley.   B. C.  Laboratories
did the analysis which included the following:
—calcium.
-magnesium.
-sodium.
—potassium.
-carbonate.
-bicarbonate.
-chloride.
-sulfate.
-nitrate.
-iron.
—manganese.
-arsenic.
-copper.
-zinc.
-total dissolved solids.
—chromium.
-lead.
-boron.
-fluoride.
-electrical conductivity.
-pH.
(p 4-18, 5-1, 5-2,  5-3)

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                                                                             114
[r20]
A general discussion of the water  quality  in the vicinity of the
Tubac Valley Water Company is  included.   This report contains the
same water quality data as in  the August 1983 report.
(p 4-24, 4-25, 6-1 - 6-5)

[r21]
A general discussion of the water quality at the Wingfield Cattle
Company  is  included.   The location of  the  Wingfield Cattle
Company  is  given  (p  2—2).   A  discussion  of  the  maps . used  in
evaluating the water quality in  the area is  given  (p 4-22)  and a
discussion of two  water samples  taken from  wells on the ranch in
March  1982  is given (p 4-22,  appendix  B).   Tables 4-2  and 4-3
show  field  specific conductances  taken  on the  two  wells during
the  pump tests.   Appendix B  contains  the  lab reports  of  the
analyses done by  BC Laboratories on the two  wells,  they include
the following:
—calcium.
-magnesium.
—sodium.
—potassium.
-carbonate.
-bicarbonate.
-chloride.
-sulfate.
-nitrate.
-fluoride.                 •                       '
-electric conductivity.
-total dissolved solids.
-temperature.
-pH

[r22]
A description of  the  geographic  area  covered  in  the report  is
given  (p  1-2).    A discussion  of sources  for water  quality
information in  this area  is  given.   Generally water  from  the
younger alluvium and from the  older alluvium meet drinking  water
standards,  (p 7-1)

[r23]
Location of Todd  Ranch is  given   (p 3-1).   Well tests  were done
on two  wells from  this  area  in  June   1984.   Field  specific
conductances taken during the  well tests are shown  on tables 4-9
and 4-10.  A discussion of  the  groundwater  quality,  in particular
the total dissolved solids  is given.   (p. 3-1,  4-9,  4-10,  4-11)

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                                                                             115
[r24]
Location  of the  Sonoita  Creek Ranch  is  given.   (p 4-1)   Well
tests were  done  on three wells on  the  ranch in 1982 -  1983.   A
general discussion  of the chemical  quality  of the  water  on the
ranch,  includes  a discussion  on  the field  specific conductance
results, total dissolved  solids,  nitrate,  and fluoride levels in
the area.   Table  5  includes  the results of the chemical analyses
done on the samples  from  these wells,  and  appendix A,B,C contain
the  lab reports.   the  following analyses   were  done  on  each
sample:
—calcium.
-magnesium.
-sodium.
-potassium.
—carbonate.
-bicarbonate.
-chloride.
-sulfate.
-nitrate.
—fluoride.
-iron.
-total dissolved solids.
-specific conductance.
-pH
(p 4-1, 7-1, 7-3, appendix A,B,C)

Cr25]                        .
Monitoring wells  are  sampled semiannually at the C. G.  Conn
Facility.   This report discusses  the analytical results  from the
sampling program conducted February 4 through February 12,  1988.
Six monitoring wells  were sampled  (UMW-1, DMW-4,  DMW-5,  DMW-6,
DMW-8,  DMW-50)  and  the  nearest   downgradient domestic  well  was
sampled (Yubeta well).   All  samples were  analyzed for  Arizona's
primary and secondary drinking water  standards.  Table 1  is  a
summary of  the well  sampling data,  it contains  the following
information:
-well ID.
-water level elevation,  (MSL)
 before sampling.
 after sampling.
-total depth below top of casing.
-pH after sampling.
-specific conductance (micromhos/cm).
-total volume  of  water removed (gallons).
-casing volumes purged.

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                                                                            116
[r25]
Attachment  I  of  the report contains  the complete  sampling
procedures used for the above sampling  program.   Attachment  II  of
the  report  contains  the  complete  lab  results  of  the  above
sampling program, it includes the  following information:
-carbonate.
-bicarbonate.
-hydroxide.
-total alkalinity as calcium carbonate.
—chloride.
-fluoride.
-nitrate as nitrogen.
-pH.
-sulfate.
-total dissolved solids.
-silver.
-arsenic.
-barium.
—calcium.
—cadmium.
—chromium.
-iron.
—hardness.
—mercury.
-manganese.
-magnesium.
-sodium.   -  •      .              '
-lead.
-selenium.
-zinc.
-copper.
-cation balance.

Cr26]
Monitoring  wells  are  sampled  semiannually at  the C.  G.  Conn
Facility.  This report discusses  the analytical results from the
sampling program  conducted  September  8  through  September 12,
1988.   Six  monitoring wells were sampled  (UMW-1,  DMW-4, DMW-5,
DMW-6, DMW-8, DMW-50) and  the nearest down-gradient  domestic well
was  sampled  (Yubeta  well).   All  samples  were  analyzed  for
Arizona's primary  and  secondary  drinking water standards.  Well
DMW-5 showed detectable levels of chromium  and lead. Table 1 is  a
summary  of  the  well  sampling data,  it contains  the  following
information:
-well ID.
-water level elevation (MSL).
 before sampling and after sampling
-total depth below  top of  casing.
-pH after sampling.
-specific conductance (micromhos/cm).
-total volume of water removed (gallons).
—casing volumes purged.

-------
                                                                            117
 Cr26]
 Attachment  I  of  the  report contains  the complete  sampling
 procedures used for the above sampling program.   Attachment  II of
 the  report  contains  the  complete  lab  results of  the  above
 sampling program, it includes the  following information:
 -carbonate.
 -bicarbonate.
 -hydroxide.
 -total alkalinity as calcium carbonate.
 -chloride.
 -fluoride.
 -nitrate as nitrogen.
 -pH.
 -sulfate.
 -total dissolved solids.
 -silver.
 -arsenic.
 -barium.
 -calcium.
 —cadmium.
 —chromium.
 -iron.
 -hardness.
 -mercury.
 -manganese.
 —magnesium.
 -sodium.
 -lead.
 -selenium.
 -zinc.
 -copper.
 -cation balance.

 [r28]
 Monitoring  wells   are  sampled  semiannually  at  the  C.  G.  Conn
 Facility.  This report discusses the analytical results from the
 sampling program conducted August  17  through August 25, 1987.
 Ten  monitoring  wells were  sampled  (UMW-1,  DMW-1, DMW-2,  DMW-3
 DMW-4,  DMW-5,  DMW-6,  DMW-7,  DMW-8,  DMW-50)  and  the   nearest
 downgradient domestic  well  was  sampled  (Yubeta well).   All
 samples  were  analyzed  for  Arizona's  primary  and  secondary
 drinking water  standards.    Table  1  is  a  summary of  the  well
 sampling data,  it contains  the following  information:
 -well ID.
 -water level elevation (MSL).
 before sampling.
 after sampling.
-total depth below  top of  casing.
-pH after sampling.
-specific conductance (micromhos/cm).
-total volume of water removed (gallons).
 -casing volumes purged.

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                                                                            118
[r28]
Attachment  I  of  the report  contains the  complete  sampling
procedures used for the above sampling program.  Attachment II of
the  report  contains  the  complete  lab  results of  the above
sampling program, it includes the  following information:
-carbonate.
-bicarbonate.
-hydroxide.
—total alkalinity as calcium carbonate.
—chloride.
-fluoride.
-nitrate as nitrogen.
-pH.
-sulfate.
-total dissolved solids.
-silver.
-arsenic.
-barium.
—calcium.
-cadmium.
—chromium.
-iron.
-hardness.
-mercury.
-manganese.
—magnesium.
-sodium.           •
-lead.
-selenium.
-zinc.
-copper.
-cation balance.

[r31]
Analytical results of  samples  taken during phase I  groundwater
monitoring program  are discussed in  section  4.1.   Complete
laboratory analyses of all  samples  taken during  the phase  I
program are  given  in the appendix  B.   All groundwater  samples
from  the  phase  I   program  were  analyzed by Analytical
Technologies,  Inc.  of Tempe, Arizona for the following:
-Priority pollutant metals
 arsenic.
 cadmium.
 total chromium.
 lead.
 mercury.
 selenium.
 silver.
 copper.
 zinc.
 antimony.
 beryllium.

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                                                                             119

[r31] continued.

 nickel.
 thallium.
-EPA interim primary drinking water standard
 arsenic.
 barium.
 cadmium.
 total chromium.
 fluoride.
 lead.
 mercury.
 nitrate.
 selenium.
 silver.
 endrin.
 lindane.
 methoxychlor.
 toxaphene.
 2,4-D and 2,4,5-TP (silvex).
 gross alpha and beta.
-Secondary drinking water standards
 alkalinity.
 calcium.
 chloride.
 copper.
 hardness.
 iron.
 magnesium.
 manganese.
 pH.
 sodium.
 sulfate.
 total dissolved solids.
 zinc.
-Additional constituents
 cyanide
 hexavalent chromium
-Total and fecal coliform

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                                                                             120
Cr31]
A discussion of  phase  II  groundwater  monitoring program includes
the following:
-Location of phase II monitoring wells, section 4.2.
-Groundwater sampling procedures, section 5.2.
—Sampling and  analysis  requirements and  schedule,  section 5.4. —
-Table 5-1 is a list of all the  analytical  methods  to be done on
 all  samples  in  the  phase II  program.   These  include  the  same
 tests as in phase I, given above.
-All  samples from the  phase II program  are  to  be  tested for all
 EPA  Interim Primary Drinking  Water Standards every 12
months, tested for all priority pollutant metals every 6
months, tested for chloride, iron, manganese, phenols,
sodium, sulfate every 6 months,  tested for total organic
carbon and  nitrates   every  6  months, and  tested   for   pH,
 temperature,  specific conductance at  the well head during  each
sampling   event.

Cr42]
This  is  a historical account of  the  water  quality  in  the Santa
Cruz  Basin, the following information  is  discussed:
-Chemical character of the groundwater,
 dissolved solids concentrations.
 Fluoride concentrations.
 Hardness.
-Relation of the quality of water to it's use.
-Relation of the quality of. water to groundwater recharge.
(p 72-81)

Cr43]
This  is a general report on the  groundwater  quality in the state
of Arizona, it includes the following information  pertaining to
Santa Cruz County:
-A discussion  of the  alluvial  aquifers  and the  effect  of  the
 mineralogy and  lithology on  the chemical  composition  of  the
 water.
-Chemical parameters discussed include,
 dissolved solids.
 hardness.
 nitrate plus  nitrite.
 fluoride.
 sulfate.
-Effects of land use on the quality of the water.
-Waste site locations.
(p 157 -164)

[r44]
The quality of  water in the water bearing formations in the Buena
Vista  study area  (Younger Alluvium,  Older  Alluvium  and  Nogales
Formation) is briefly examined.   Data  from  the  files of ADHS and
ADWR  were  used  to construct  Stiff  diagrams  and  tri-linear
diagrams.  (p 45-46, Fig.  16,17,  Appendix B)

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                                                                            121
[r45]
The water quality in the  seven  selected feasible geographic areas
for recharge (Potrero Canyon, Kino Springs,  Santa  Cruz  River at
the  Nogales  International  Wastewater Treatment  Plant,  Tubac,
Chaves  Siding  road  at Santa Cruz  River,  Agua Linda,  Amado)  is
discussed briefly.   (p 7-18)

[r45]
A  map  showing location, specific  conductance  and  fluoride
concentrations  (mg/1)  of  wells and  springs  for  which  a  water
sample  was  collected in  1981-1982  is given.   Chemical quality
diagrams,   showing  major  constituents   (meq/1),   used  in
characterizing  water type  is  included  on the map. (p 27)

[r48]
General inorganic water quality of the water bearing units (Fort
Lowell  Formation, Tinaja  beds,  Pantano Formation) in  the Upper
Santa Cruz  Sub-Basin are discussed.    In  particular groundwater
chemical types,  dissolved solids  concentrations,  and   fluoride
concentrations  are included.  (p 11-10)
Concentrations of chemical constituents and  possible  sources of
contamination by  chemical  constituents  (sulfate,  nitrate,
trichloroethylene)  present in localized areas of the Upper Santa
Cruz Sub-Basin are  discussed.   (p 11-11, Figure II-4)
A  general  discussion  of  the  current quality of  groundwater  in
Santa Cruz County,  (p  11-12)

[r51]
The  chemical  quality  of  water  in  the  Swab  study  area  is
discussed.  The following  is included:
—factors that influence groundwater quality.
-groundwater chemical  types  (based  on relative  concentrations  of
 major ions) .
-processes  that  may  account  for  the  deterioration  of  water
 quality.
-constituents present  at  high  concentrations in  localized  areas
 of the study area  (fluoride, arsenic, chromium, lead,
cadmium) .
(p 11)

[r52]
A comparison of the water quality in thirteen wells approved for
potable water, with the  water  quality of the  IWWTP  effluent  is
given.  The following  constituents were analyzed for:
-Iron.
-Calcium.
-Magnesium.
-Sodium.

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                                                                             122

[r52] continued.

-Bicarbonate.
-Carbonate.
-Fluoride.
-Nitrate.
-Total dissolved solids.
-Total hardness as calcium carbonate.
-Alkalinity.
-Specific conductance.
-pH.
(p 5-6 to 5-10, Table 5-3, Plate 5-2)

[r52]
Chemical  analyses  from  14  wells  used  primarily  for irrigation
purposes  are  compared to IWWTP  effluent  chemical quality.   The
following information for each sample is given:
-location of well.
-sample date.
—owner of well.
-well depth.
-static water level.
-electric conductivity.
-total suspended solids.
-Calcium.
-Magnesium.
-Sodium.   .
-Chloride.
-Sulfate.
-Carbonate.
-Bicarbonate.
-Nitrate.
-Percent Sodium.
-SAR.
(p 5-11,  Table 5-4)

[r52]
Chemical analyses of the potable water sources of water companies
in the  Nogales  area  are given.  The results  from  nine  wells
include the following information on each sample:
-Major cation concentrations.
-Major anion concentrations.
-Trace metal concentrations.
-Specific conductance.
-Hardness as calcium carbonate.
-pH.
(Table 6-2)

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                                                                              123
Cr52]
The  results  of chemical  analyses  of  water taken  at different
depths at the  Calabasas  site  is  given.   The following parameters
are included:
-soluble salts.
-electric conductivity.
-pH.
-Hardness.
-Calcium.
—Sodium.
-Magnesium.
-Chloride.
-Sulfate.
-Carbonate.
-Bicarbonate.
-Fluoride.
-Nitrate.
-Iron.
(Table 14-2)

Cr54]
The occurrence  and  solubility of four elements (barium, arsenic,
fluorine, chromium) that normally are found in trace amounts, but
in  the alluvial  basins  of Arizona  can  be found  in  relatively
large concentrations.  The following information is included:
-source of these elements.
-controls that affect the occurrence and solubility.
-the health effects of high concentrations of these elements.
-the maximum concentration level  (MCL)  -established  by  the U.S.
 Environmental Agency (1977) for these elements.

[r55]
Water quality data  from  90  wells  over a period of time from 1939
to 1989 is given.  The following information is provided for each
well:
-well registration number.
-well location (latitude and longitude).
-date sampled.
-time sampled.
-specific conductance.
-pH.
-temperature.
-total dissolved solids.
-sodium adsorption ratio (SAR).
-hardness as calcium carbonate.
-sodium.
-potassium.
—calcium.
—magnesium.
-chloride.
-alkalinity as calcium carbonate.
-sulfate.

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                                                                             124

[r55] continued.

-fluoride.
-silica.
-nitrate + nitrite.
-ortho-phosphorus.
-ortho-phosphate.
—aluminum.
-arsenic.
-barium.
-beryllium.
-boron.
—cadmium.
-chromium.
-cobalt.
-copper.
-iron.
-lead.
-lithium.
-manganese.
—molybdenum
—selenium.
—vanadium.
-zinc.

[r56]
Inorganic water quality data from six different domestic wells in
Santa  Cruz County,  sampled from 1986-1987.   The  following
information is given:
—well number.
-well location (township, range,  section).
—groundwater basin.
-well owner name.
-date sampled.
-collection agency.
-laboratory doing analyses.
-total alkalinity.
-pH.
-specific conductance.
-temperature.
-calcium.
-chloride.
-fluoride.
-hardness.
-magnesium.
-sodium.
-sulfate.
-total dissolved  solids.
-arsenic.
-barium.
—cadmium.
—chromium.

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                                                                              125

[r56] continued.

-copper.
-iron.
-lead.
-manganese.
—mercury.
—selenium,
-silver.
-zinc.
-total nitrate + nitrite.

[r57]
Water systems utilizing only groundwater sources are to be  tested
for  inorganic  chemicals once every  three  years.   Water systems
utilizing surface  water sources  are to be  tested  for inorganic
chemicals once every year.  The following information is included
in an inorganic chemical analysis:
-specimen number.
-date received.
-public water system identification number.
-sample date.
-sample type.
-sample time.
-sampling point.
-water system name and address.
-lab performing analysis name and address.
-supply source.
-sample appearance.
-sample color.
-sample odor.
-sample temperature.
-contaminant code.
-analysis method.
-maximum contaminant levels.
-contaminants analyzed for include
 arsenic.
 barium.
 cadmium.
 chromium.
 fluoride,
 lead.
 mercury.
 nitrates.
 selenium.
 silver.
 alkalinity.
 calcium.
 chloride.
 copper.
 hardness.
 iron.

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                                                                            126

[r57] continued.

 magnesium.
 manganese.
 pH.
 sodium.
 sulfate.
 total dissolved solids (TDS).
 zinc.
 corrosivity.
 foaming agents.

Cr57]
Water  systems  using  only  groundwater sources  are  required  to
submit  one sample from  each source  for  corrosivity  analysis.
Water  systems  using  any  surface water sources  are  required  to
submit two samples for corrosivity  analysis,  one during the  hot
weather season and  one  during the  cold weather season.    The
determination of  the  corrosivity characteristics of  water  is
based  on  the  measurement  of  water  temperature,  pH, calcium
hardness,  alkalinity,  and  total  dissolved  solids.    This
information is used to  calculate the Langlier  Index.

Cr57]
All community water systems  must submit samples for radiochemical
contamination analysis once  every  four years.   A radiochemical
analysis supplies the following information:
-gross alpha particles.
-radium 226.
-radium 228.
-combined radium.
-gross beta particles.
-combined uranium.

[r61]
There are  seven monitoring  wells on  site at  the Nogales  IWWTP,
and thirteen existing wells  offsite that  are monitored  for  water
quality.  The on  site  monitoring wells  are sampled quarterly  and
analyzed for the  following  inorganic  parameters:  Nitrate (as  N)
and Total  Kjeldahl Nitrogen.  Off-site  monitor wells are sampled
semiannually for the  following parameters: Nitrate (as  N),  Total
Kjeldahl Nitrogen, and Chloride.  Sample  results may be obtained
from ADEQ,  Office of  Water Quality.

[r67]
This report  is  an interpretation of  the  data on nitrate levels
obtained from four monitoring runs jointly conducted  by  SEAGO  and
the  State  Department of Health  Services  (ADHS)  for  fiscal year
1981-82.   Possible point  and non-point source contributions  for
the nitrate levels are  discussed.  (p  2-5)

-------
                                                                              127
 Cr67]
 The  goals  and  results  of the four monitoring runs are  discussed.
 The  four runs  were as  follows:
 1. April monitoring activities,
 -represent  a wide   range of  geographic locations  and
      conditions in Santa Cruz County.
 -12 stations  were monitored.  (6 groundwater sites)
 -Figure 3 shows locations  cf the stations.
 -Table 1  shows the results.
 2. July monitoring activities,
 -focused  on the area  north of Tumacacori.
 -20 stations  were monitored. (18 groundwater sites)
 -Figure 4 is  a map  of nitrates  in wells, based on April  and
      July 1981 monitoring  runs.
 -Table 2  shows the results in tabular form.
 3. October monitoring  activities,
 -focused  on  the  area  adjacent to  the  three  high nitrate
 domestic wells.
 -8  stations were monitored. (7 groundwater sites)
 -Figure 5 shows the location of the sites.
 -Table 3  shows the results of this monitoring run.
 4.December monitoring  activities,
 -focused along the Santa Cruz-Pima County line.
 —4  stations were monitored, all groundwater.
 -Figure 6 shows the location of the sites.
 -Table 4 shows the results of this monitoring run.
 (p 5-10)

 Cr67]
 Each monitoring  run included  the  following  inorganic chemistry
 and  physical information at each site:
 -USGS well number.
 -well location.
 -well owner.
 -date drilled.
 -approximate depth.
 -diameter and depth of casing.
 —adequacy of well construction.
 -surrounding land use.
 —name of original owner.
 -taste and odor problems.
 -perforated interval.
 -pump horsepower.
 -well yield.
 -static water level.
 -specific conductance.
 -pH.
-air and water temperature.
—calcium.
-magnesium.
—sodium.
-iron.

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                                                                             128

[r67] continued.

-copper.
—manganese.
-zinc.
-sum of cations.
-alkalinity.
-chloride.
-nitrate.
-sulfate.
-total phosphorus.
-fluoride.
-nitrite.
-sum of anions.
-cationIanion balance.
-hardness as calcium carbonate.
-residue.
-total suspended solids.
-Total Kjeldahl nitrogen.
—ammonia.
-boron.
—turbidity.
(Tables 1,2,3,4)

Cr67]
Groundwater quality in sub-areas of the study area, and different
groundwater types in the study area are discussed.  Figure 7 is a
trilinear diagram of the samples collected.  (p 10-11)

Cr71]
Map showing dissolved solids content of groundwater in the Tucson
area.

Cr72]
Map showing the chemical quality of groundwater for public supply
in the Tucson area.

Cr77]
Map  showing  total  dissolved  solids  content  of  groundwater  in
Arizona.

Cr78]
Map showing quality of groundwater in Arizona.

Cr79]
Map showing well water  irrigation  classification, for Santa Cruz
- San Pedro River Basins, Arizona.

Cr82]
Map showing well  water quality  for  domestic use  in  Santa Cruz-
San Pedro River Basins, Arizona.

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                                                                             129
[r84]
Map  showing  distribution of  dissolved  solids  and dominant
chemical  type  of groundwater in  the  Basin  and  Range  Province ,
Arizona.

Crll7]
This  report  presents  the baseline  hydrologic  conditions  that
existed in  the  Upper Santa Cruz  Basin  groundwater system as  of
the  summer  of  1978.   Although  most  of  the information is  from
Pima  County,  there  were  a few  sampling sites  in far northern
Santa  Cruz  County  and  on the  Santa  Cruz-Pima County line.
Historical quality-of-water data  for  the area over  the last  40
years were collected and  analyzed.   A sampling program was  also
carried out  to  determine  the existing water  quality in 1978, a
total of 112 samples were  collected  for  laboratory analyses.   The
report  includes,  a summary  of  the sampling  procedures,  an
evaluation of  the analytical data,  water quality standards  and
constituents that  exceed  these  limits,  and  places  where water
quality limits  are exceeded.  (p  21-38)

Crll7]
Laboratory determinations  included the following  constituents :
-calcium.                -manganese.
—magnesium.              —arsenic.
-sodium.                -copper.
-potassium.              -zinc.
-carbonate.              -chromium.
-bicarbonate.           -selenium.
-sulfate.                -molybdenum.
-chloride.          -silica.
-nitrate.                -total dissolved solids.
-fluoride.          -electrical conductivity.
-iron.                  -pH.
(vol. II,  section II)
Plate 3 shows nitrate content in ground water in the study area,
summer of 1978.   Plate  4  shows  sulfate content in ground water in
the study area,  summer of 1978.   Plate  5 shows total dissolved
solids content in ground  water  in the study area, summer of 1978.

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                                                                       130
GROUNDWATER QUALITY / ORGANIC CHEMICAL CHARACTERISTICS

-------
                                                                              131
 [rl].
 Discussion  of wells  sampled  for VOC's  in 1986  and  1987, and  a
 description of  laboratory results is given,  sampler  names,  well
 locations and well  use  are included.   Organic water quality  data
 for wells located at  the  following sites:
 -along the Santa Cruz river south of IWWTP.   (5 wells)
 -adjacent to the Nogales  Wash study area.   (12 wells)
 -along the Santa Cruz river north of the IWWTP.   (8 wells)
 -within the Nogales Wash  study area.  (18  wells)

 [rl]
 Specific data for each of  the above wells  are as  follows:
 -well owner and identification number.
 -well location by Township, Range, Section, Quadrant.
 -date of well drilling completion.
 -well depth.
 -perforation interval.
 -well elevation.
 -well use.
 -water level in feet below water surface.
 -date water level was measured.
 -Yield.
 -casing diameter.
 -water level elevation in  feet above mean  sea level.
 -well registration number  (ADWR).
 -name of analytical laboratory responsible  for analysis.
 -lab sample identification number.
 -sample date.
 -name of organization that collected the samples.
 -analytical method used to analyze the sample.

 [rl]
 Each sample was analyzed  for the following  chemical constituents:
 -trichloroethylene (TCE).
 -1,1,1-trichloroethane (TCA).
 -tetrachloroethylene  (PCE).
 -t-1,2-dichloroethylene (t-1,2-DCE).
 -bromoform.
 -chloroform.
 -dibromochloromethane.
 -1,1-dichloroethane (DCA).
 -methylene chloride.
 -trichlorofluoromethane.
-1,2-dichloroethane.
 -1,1-dichloroethylene.
-1,2~dichloropropane.
 -chlorodifluoromethane.
 —bromodichloromethane.
 -benzene.
-chlorobenzene.
—dichlorobenzene.
-ethylbenzene.

-------
                                                                             132

[rl] continued.

-1,2-dichlorobenzene.
-1,3-dichlorobenzene.
-carbon tetrachloride.
-toluene.
-chloroethane.
-1,1,2-trichloroethane.
-vinyl chloride.
-acetone.
Xp 11-16, tables: A-l, A-2, A-3, A-4, A-5, A-6, A-7, A-8, A-9,
C-l, C-2, C-3).

[rl]
Information  f.or  surface  water  samples  obtained  outside the
Nogales  Wash  study area. ' (3 samples)   Information  for surface
water samples located in the Nogales Wash study area.  (3 samples)
For each sample data are as follows:
-sample description.
-sample location by Township, Range, Section, Quadrant.
-name of analytical laboratory that performed the analysis.
—lab sample identification number.
—sample date.
-name of organization that collected the sample.
-analytical method.

[rl]  .                                                              '
Each sample was analyzed for the following chemical constituents:
-trichloroethylene (TCE).
-1,1,1-trichloroethane (TCA).
-tetrachloroethylene (PCE).
-t-1,2-dichloroethylene (t-1,2-DCE).
-bromoform.
-chloroform.
-dibromochloromethane.
-1,1-dichloroethane (DCA).
-methylene chloride.
-trichlorofluoromethane.
-1,2-dichloroethane.
-1,1-dichloroethylene.
-1,2-dichloropropane.
-chlorodifluoromethane.
-bromodichlorome thane.
-benzene.
-chlorobenzene.
-dichlorobenzene.
-ethylbenzene.
-1,2-dichlorobenzene.
-1,3-dichlorobenzene.
-carbon tetrachloride.
-toluene.
-chloroethane.

-------
                                                                             133

 [rl] continued.

 -1,1,2-trichloroethane.
 -vinyl chloride.
 -acetone.
 (tables: A-ll. A-12, C-5, C-6) .

 [r4]
 Organic  chemical levels of  well samples,  surface water samples
 and sediment  samples from Agua  Prieta,  Nogales  and' Cananea are
 given. Samples were analyzed by Copper State Analytical Lab, Inc.
 in  Tucson,  Az.    Samples  were  analyzed  for  the following
 constituents:
 -dichlorodifluoromethane
 -chlorome thane
 -vinyl chloride
 -bromomethane
 -chloroethane
 -trichlorofluoromethane
 -1,1-dichloroethane
 -2,2-dichloropropane
 -cis-1,2-dichloroethane
 -chloroform
 -bromochlotomethane
 -1,1,1-dichloroethane
 -1,1-dichloropropene
 -carbon tetrachloride
 -benzene
 -1,2-dichloroethane
 -trichloroethene
 -1,2-dichloropropane
 -bromodichlorome thane
 -dibromomethane
 —toluene
 -1,1,2-trichloroe thane
 -tetrachloroethane
 -1,3-dichloropropane
 -dibromochloromethane
 -1,2-dibromoethane
 -chlorobenzene
 -ethyl benzene
-1,1,1,2-tetrachloroethane
-m-xylene
-p-xylene
 -o-xylene
 -styrene
 -isopropyl benzene
 -bromoform
 -1,1,2,2-tetrachloroethane
 -1,2,3-trichloropropane
 -n-propyl benzene
 -bromobenzene

-------
                                                                             134

[r4] continued.

-1,3,5-trimethyl benzene
-2-chlorotoluene
-4-chlorotoluene
-tert-butylbenzene
-1,2,4-trimethylbenzene
-see-butylbenzene
-p-isoprpyltoluene
-1,3-dichlorobenzene
-1,4-dichlorobenzene
-n-butylbenzene
-1,2-dicholorobenzene
-1,2-debromo-3-chloropropane
-1,2,4-trichlorobenzene
-hexachlorobutadiene
—naphthalene
-1,2,3-trichlorobenzene

Cr8]
File  from  Santa  Cruz  County  Health  Department contains  lab
results from  samples collected  on  38 wells  in the  vicinity  of
Nogales, Arizona.   Sample  dates range from November  1986  to May
1987.  Samples  were  analyzed  by Arizona Department  of  Health
Services State Lab, the following information is included:
—sample name.
-station number.
-sample date and time.
-type of sample.
-analytical result,
 compound.
 method.
 storet number.
 result.
 method reporting limit.

Cr8]
A complete  organic  analysis  consisting of  32 volatile  organic
chemicals was  performed on  each  sample.    This  included  the
following constituents:
-chloromethane.
-bromomethane.
-dichlorodifluoromethane.
-vinyl chloride.
-chloroethane.
-methylene chloride.
-trichlorofluromethane.
-1,1-dichloroethene.
-1,1-dichloroethane.
-total 1,2-dichloroethene.
-chloroform.
-1,2-dichloroethane.

-------
                                                                              135

[r8] continued.

-1,1,1-trichloroethane.
-carbon tetrachloride.
-bromodichloroethane.
-1,2-dichloropropane.
-trans-1,3-dichloropropene.
-trichloroethene.
-dibromochloromethane.
-1,1,2-trichloroethane.
-cis-1,3-dichloropropene.
T-2-chloroethylvinyl ether.
-bromoform.
-1,1,2,2-tetrachloroethane.
-tetrachloroethene.
-chlorobenzene.
-1,3-dichlorobenzene.
-1,2-dichlorobenzene.
-1,4-dichlorobenzene.
-benzene.
—ethylbenzene.
-toluene.
-xylenes,total.

[r9]
This file contains  lab  reports  of organic chemical analyses  from
1988, for  Valley Verde Water • Company Wells  in  No'gales,  Az.,
information included is as follows;
-specimen number.
-lab name and address.
-sample date and time.
-water system name.
-sampling point-well number.
-sample appearance.
-water supply source.
-contaminant code.
-analysis method.
-contaminants tested for,
 endrin
 lindane
 methoxychlor
 toxaphene
 2,4-D
 2,4,5-TP Silvex
 TTHM P/T
 TTHM LLE
 TCE P/T
 TCE LLE

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                                                                            136
[rlO]
This  file  contains organic  chemical  analytical results  of the
1988 groundwater sampling investigation done by Earth Technology
Corporation.  The same  data  is  contained  in appendix  C of
reference   #11.  Test  for  volatile  halocarbons  included 27
different compounds.

[rll]
Discussion  of  VOC's  discovered  in the Nogales Wash study  area
during 1986, 1,987 by the Santa Cruz County Health Department and
by   the  Arizona  Department  of  Health  Services.    PCE
(tetrachloroethylene)  levels  above  the Arizona  action level   were
detected during both  investigations and  18 Voc's were detected at
concentrations below  State  and  Federal drinking water standards.
The eight most commonly found VOC's included:
1,1,1-trichloroethane,  dibromochloromethane,  tetrachloroethylene,
bromoform,  chloroform,   1,1-dichloroethane,   trans-1,2-
dichloroethylene,  trichloroethylene.    The  1988   groundwater
sampling investigation done  by Earth Technology Corporation  show
three  wells  located  along Nogales Wash near  the  International
Border to  contain  PCE concentrations  above the  State action
level.  Santa  Cruz County  Health Department  sampled  17 wells in
the  Nogales  Wash study area during their 1986-87 investigation
and ADHS sampled 10 wells adjacent  to the Nogales Wash study  area
in their 1987 investigation.  (p. 1-3, 8-9)

[rll]                                                      -
Discussion  of  results from the  Earth Technology   groundwater
sampling program that  included  18  wells along the  Nogales  Wash
from the International  Border  north to IWWTP, investigation was
conducted August 22-25,  1988.  The  purpose of  the  investigation
was  to detect  the presence  of  VOC's  in the  Nogales Wash study
area.  The  following  information  was determined for each site:
—ID number.
-location.  (T,R,S,QQQ)
-well owner ID.
-registration number.
-contact,  (for well access)
-date drilled.
-well depth.
-casing diameter.
-perforation interval.
-well use.
-water level.
-date water level was measured.
-yield (gpm).
—dates previously sampled.
-sampling method.
-complete VOC analysis  of 27  possible constituents.
-name of lab doing  the  analyses.
-lab sample ID number.
-sample date.

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                                                                              137

[rll] continued.

-sampler.
-analytical method.
-specific conductance .
-total dissolved solids.
-temperature.
-major cations and anions.
(p 23-29, 38-44, 63-73, plates 1-4, appendix A,C)

[rll]
Each sample was analyzed for the following constituents:
-trichloroethylene (TCE).
-1,1,1-trichloroethane (TCA).
-tetrachloroethylene (PCE).  .
-t-l,2-dichloroethylene (t-l,2-DCE).
-bromoform.
-chloroform.
—dibromochloromethane.
-1,1-dichloroethane (DCA).
—methylene chloride.
-trichlorofluoromethane.
-1,2-dichloroethane.
-1,1-dichloroethylene.
-1,2-dichloropropane.
-chlorodifluoromethane.
-bromodichloromethane.
-benzene.
-chlorobenzene.
-dichlorobenzene.
-ethylbenzene.
-1,2-dichlorobenzene.
-1,3-dichlorobenzene.
-carbon tetrachloride.
-toluene.
-chloroethane.
-1,1,2-trichloroethane.
-vinyl chloride.
-acetone.
-bicarbonate.
-chloride.
-nitrate.
-sulfate.
-calcium.
—potassium.
—magnesium.
-sodium.

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                                                                             138
[rll]
Discussion  of  related investigations  in the Nogales  Wash study
area.   Prescott college conducted  sediment, surface  water,  and
groundwater  sampling  during April  1988  for the  Border  Ecology
Project,  in Aqua  prieta,  Nogales,  and  Cananea, Mexico,  five
samples  were  obtained in Nogales, Conora, Mexico.   Samples were
analyzed for fecal coliform counts,  metals, and VOC's.
Discussion  of Woodward-Clyde  Consultants  current  groundwater
investigation  for  C.  G. Conn  Ltd.,  located west  of  the  Nogales
Wash  study  area,  analytical results  for ten wells  for  the
detection of VOC's are given in the  report.  (p 46-50)

[r!2]
Water samples were collected from twenty-three wells  in the study
area in May-June 1988 for analyses of volatile halocarbons by EPA
Method  601.  These were  the same  wells  for which samples  were
collected for comprehensive inorganic analyses,  the list of these
wells are given in the  inorganic  section of  this data base.  The
only  sample  that  had  a  detectable  content  of any volatile
halocarbon was MW-1,  upgradient of the Nogales IWWTP.   Results of
the volatile halocarbon analyses are given in appendix E of the
report.  The samples  were analyzed for the following  compounds:
-bromodichloromethane
-bromoform
-bromomethane
-carbon tetrachloride
-chlorobenzene
-chloroethane
-2-chloroethylvinyl ether
-chloroform
-chloromethane
-dibromochloromethane
-1,2-dichlorobenzene
-1,4-dichlorobenzene
-1,3-dichlorobenzene
—1,1—dichloroethane
-1,2-dichloroethane
-1,1-dichloroethene
-trans-1,2-dichloroethene
-1,2-dichloropropane
-cis-1,3-dichloropropene
-trans-1,3-dichloropropene
-methylene chloride
-1,1,2,2-tetrachloroethane
-tetrachloroethane
-1,1,1-trichloroethane
-1,1,2-trichloroethane
-trichloroethane
-trichlorofluoromethane
-vinyl chloride
-total organic carbon

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                                                                            139
 [r!2]
 Also  discussed  is  the  results  of  the  Earth  Technology
 Corporation  report,  which included  volatile  halocarbons  and
 volatile aromatics  analyses  from  twelve wells along  the Nogales
 Wash,  sampled in 1986-87.  Maps are also included that show VOC
 contents in water from wells  sampled in  the  study  area.
 (p 46-52)

 [r25]
 Discussion  of  analytical  results for groundwater  samples
 collected during the semiannual groundwater  monitoring at C.G.
 Conn,  February  4  through February 12,  1988.   Six monitor wells
 were sampled (UMW-1, DMW-4, DMW-5, DMW-6, DMW-8, DMW-50) and the
 nearest  downgradient  domestic  well  was  sampled  (Yubeta well).
 All  samples  were  tested for volatile organic  carbons using EPA
 Methods 601 and 602.                       '   '

 [r25]
 Results of the  sampling  program are  discussed, specifically what
 contaminants  were   found  and  at   what  levels,  also  an
 interpretation of  the  reliability  of the results  based on QA/QC
 procedures.   Trichlorof luoromethane was detected  in  5  of  6
 monitoring wells  and  in  the Yubeta well.   The Yubeta  well was
 resampled on April 28, 1988 and the  results  showed all compounds
 below  detection.   The upgradient  monitoring well UMW-1, showed
 five VOC's present, three exceed the  Arizona  Action Levels, (1,1-
 DCE, TCE,  trichlorofluoromethane).   Downgradient wells DMW-4 and
 DMW-8 showed two VOC's above  the Arizona Action Level  (1,1,1-TCA,
 trichlorofluoromethane) .   The  monitoring well  DMW-6 showed
 detectable concentrations  of  two  VOC's (trans 1,2-DCE,  TCE).
 Monitoring wells  DMW-5 and DMW-50  showed no significant change
 from the previous  semiannual  sampling results.

 [r25]
The  extent of  the  VOC plume is discussed,  it  is  bounded to the
east by  DMW-5,  the north  extent  is  well  DMW-6,  and  the  south
extent is well DMW-7 (not assessable  for sampling).

 Cr25]
Table  1 is a  summary  of  the  well  sampling data,  it contains the
following information:
-well ID.
-water level elevation (MSL)
 before sampling.
 after sampling.
-total depth below top of casing.
-pH after sampling.
-specific conductance,  (micromhos/cm)
-total volume of water removed, (gallons)
-casing volumes purged.

-------
                                                                             140
[r25]
Table 2  is  a summary of  the  VOC's detected in  monitoring  wells
(UMW-1, DMW-1, DMW-2, DMW-3,  DMW-4,  DMW-5,  DMW-6, DMW-7,  DMW-8,
DMW-50)  in  each  consecutive  semiannual  sampling program  since
April 1985, it contains  the following information:
-well designation.
-date of sampling.
-ADHS action level.
—analytical parameter (microgram/liter)
 chloroethane.
 1,1-DCE.
 1,1-DCA.
 Trans 1,2-DCE.
 chloroform.
 1,2-DCA.
 1,1,1-TCA.
 TCE.
 1,1,2-TCA.
 methylene chloride.
 acetone.
 vinyl chloride.
 PCE.
 trichlorofluoromethane.
 dibromochloromethane.
 toluene.
 Trans 1,3 dichloropropene.
 bromodichloromethane.
 o,p-xylene.

[r25]
Table 3 is a summary of  the VOC's detected in groundwater samples
collected  from  the  Yubeta  Well in  each sampling program from
April 1985, it includes  the following information:
-date.
-EPA analytical  method.
—concentration in micrograms/liter and compound detected
 trichlorofluoromethane.
 trichloroethane.
 1,1,1-trichloroethane.

[r25]
Attachment I of  the report is  a  complete description  of the water
sampling  procedure.   In  attachment   II  of  the  report  are  the
complete laboratory results,  all  samples  were analyzed  for
thirty-five  different  volatile  halocarbons/aromatics.    The
thirty-five VOC's tested for are as follows:
-benzene.
-bromodichloromethane.
-bromoform.
-bromomethane.
-carbon tetrachloride.
-chlorobenzene.

-------
 [r25] continued.

 -chloroethane.
 -chloroform.
 -chloromethane.
 -dibroraochloromethane.
 -1,2-dichlorobenzene.
 -1,3-dichlo-obenzene.
 -1,4-dichlorobenzene.
 -dichlorodifluoromethane.
 -1,1-dichloroethane.
 -1,2-dichloroethane.
 -1,2-dichloroethane. (total)
 -1,2-dichloropropane.
 -cis-1,3-dichloropropene.
 -trans-l,3-dichloropropene.
 -ethylbenzene.
 -methylene chloride.
 -1,1,2,2-tetrachloroethene.
 -tetrachloroethene.
 -toluene.
 -1,1,1-trichloroethene.
 -1,1,2-trichloroethene.
 -trichloroethene.
 -trichlorofluoromethane.
 -vinyl chlpride.
 -meta xylene.                  .
 -o-xylene.

 [r26]
 Discussion  of  analytical  results  for groundwater  samples
 collected during  the  semiannual  groundwater  monitoring at C.  G.
 Conn, September 8 through September  12, 1988.   Six monitor wells
 were sampled (UMW-1, DMW-4, DMW-5, DMW-6, DMW-8, DMW-50) and  the
 nearest  downgradient  domestic  well  was  sampled (Yubeta well).
 All samples  were  tested for volatile  organic  carbons using  EPA
 Methods  601  and  602,   and  for  Arizona primary  and  secondary
drinking water standards.

 [r26]
Results  of the  sampling program are  discussed,  specifically what
contaminants  were  found  and  at  what   levels,  also  an
interpretation of the reliability  of the  results based on QA/QC
procedures.   Toluene was detected  in  well  UMW-1,  TCE was detected
in well  DMW-50  above  the Arizona  action  level,  samples  from
Yubeta well, DMW-4, and  DMW-8 did not contain detectable amounts
of any  VOC's,  results  from UMW-1  were consistent with previous
 sampling results.

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                                                                              142
Cr26]
The  extent  of the VOC  plume  is discussed,  it  is bounded to  the
east  by DMW-5, the  north extent  is  well  DMW-6, and  the  south
extent is well DMW-7 (not assessable for sampling).

[r26]
Table  1  is  a summary of  the  well  sampling data, it contains  the
following information:
-well ID.
-water level elevation (MSL)
 before sampling.
 after sampling.
-total depth below top of casing.
-pH after sampling.
-specific conductance, (micromhos/cm)
-total volume of water removed, (gallons)
-casing volumes purged.

[r26]   •
Table  2 is  a  summary of the  VOC's  detected in the monitoring
wells  (UMW-1,  DMW-1,  DMW-2,  DMW-3,  DMW-4,  DMW-5,  DMW-6, DMW-7,
DMW-8,  DMW-50)  in each  consecutive semiannual  sampling program
since April 1985, it contains the following information:
-well designation.
-date of sampling.
-ADHS action level.
-analytical parameter (microgram/liter)
 chloroethane.
 1,1-DCE.
 1,1-DCA.
 Trans 1,2-DCE.
 chloroform.
 1,2-DCA.
 1,1,1-TCA.
 TCE.
 1,1,2-TCA.
 methylene chloride.
 acetone.
 vinyl chloride.
 PCE.
 trichlorofluoromethane.
 dibromochloromethane.
 toluene.
 Trans 1,3 dichloropropene.
 bromodichloromethane.
 o,p-xylene.

-------
                                                                             143
 Cr26]
 Table 3 is a summary of the VOC's detected in groundwater samples
 collected  from the  Yubeta  Well  in  each  sampling  program  from
 April 1985, it includes the following information:
 -date.
 -EPA analytical method.
 -concentration in tnicrograms/liter and compound detected
 trichlorofluoromethane.
 trichloroethane.
 1,1,1-trichloroethane.

 [r26]
 Attachment I of the report is a complete description of the water
 sampling  procedure.    In  attachment  II  of  the  report  are  the
 complete  laboratory  results,  all. samples  were  analyzed  for
 thirty-five  different volatile  halocarbons/aromatics.    The
 thirty-five VOC's tested for are as follows:
 —benzene.
 -bromodichloromethane.
 -bromoform.
 -bromomethane.
 -carbon tetrachloride.
 -chlorobenzene.
 -chloroethane.
 -chloroform.
 -chloromethane.
 -dibromochloromethane.
 -1,2-dichlorobenzene.
 -1,3-dichlorobenzene.
 -1,4-dichlorobenzene.
 -dichlorodifluoromethane.
 -1,1-dichloroethane.
 -1,2-dichloroethane.
 -1,2-dichloroethane, (total)
 -1,2-dichloropropane.
 -cis-1,3-dichloropropene.
 -trans-1,3-dichloropropene.
 -ethylbenzene.
 -methylene chloride.
-1,1,2,2-tetrachloroethene.
-tetrachloroethene.
-toluene.
-1,1,1-trichloroethene.
-1,1,2-trichloroethene.
-trichloroethene.
-trichlorofluoromethane.
-vinyl chloride.
-meta xylene.
-o-xylene.

-------
                                                                            144
[r27]
A discussion of the following is  included:
-sampling collection procedures.
-sample preservation and handling procedures.
-recording, labeling, and chain of custody  procedures.
—extent of the groundwater contamination  plume.

Cr27]
Table  5  shows the  sample results  from the August  17 through
August  21,  1987  sample  program.    (These  results  and  the
information  contained  in  these analyses  are given in  the
analytical report  in this sample  program  -  see reference #28).

[r27]
Appendix  C  contains  the complete laboratory analyses  of all the
samples  from  the  August1 17  through August 21,  1987  sampling
program - see reference #28 for details of  what  tests were done.

Cr28]
Discussion  of analytical  results  for  groundwater  samples
collected during the semiannual groundwater  monitoring at C.G.
Conn, August 17 through August 25, 1987.   Ten monitor wells were
sampled (UMW-1, DMW-1, DMW-2, DMW-3,  DMW-4, DMW-5,  DMW-6, DMW-7,
DMW-8,  DMW-50)  and   the  nearest  downgradient domestic  well  was
sampled  (Yubeta well).     All  samples  were  tested  for volatile
organic carbons using EPA Methods 601 and 602.

[r28]
Results of the  sampling  program  are discussed,  specifically what
contaminants  were found   and  at  what  levels,   also  an
interpretation of  the reliability of the  results based on QA/QC
procedures.  All parameters  were  below maximum  limits  or within
normal ranges  for  local groundwater.   Samples  from  well UMW-1,
detected five different VOC.s,  since  August of 1986  these levels
have progressively decreased.

[r28]
Table 1 is  a  summary of the  well sampling data, it contains the
following information:
-well ID.
-water level elevation (MSL)
 before sampling.
 after sampling.
-total depth below top of casing.
-pH after sampling.
—specific conductance,  (micromhos/cm)
-total volume of water removed, (gallons)
-casing volumes purged.

-------
                                                                             145
Cr28]
Table  2 is  a summary  of  the VOC's  detected in the  monitoring
wells  (UMW-1,  DMW-1,  DMW-2, DMW-3,  DMW-4,  DMW-5, DMW-6,  DMW-7,
DMW-8,  DMW-50)  in each consecutive semiannual  sampling  program
since April 1985, it contains the following information:
-well designation.
—date of sampling.
-ADHS action level.
-analytical parameter (microgram/liter)
 chloroethane.
 1,1-DCE.
 1,1-DCA.
 Trans 1,2-DCE.
 chloroform.
 1,2-DCA.
 1,1,1-TCA.
 TCE.
 1,1,2-TCA.
 methylene chloride.
 acetone.
 vinyl chloride.
 PCE.
 trichlorofluoromethane.
     dibromochloromethane.
 toluene.
 Trans 1,3 dichloropropene.
 bromodichloromethane.
 o,p-xylene.

Cr28]
Table 3 is a summary of the VOC's detected in groundwater  samples
collected  from  the Yubeta  Well  in  each sampling  program  form
April 1985, it includes the following information:
-date.
-EPA analytical method.
—concentration in micrograms/liter and compound detected
 trichlorofluoromethane.
 trichloroethane.
 1,1,1-trichloroethane.

[r28].
Attachment I of the report  is a complete  description  of the water
sampling procedure.    In attachment II  of  the  report are the
complete  laboratory  results,  all  samples  were  analyzed for
thirty-five  different volatile halocarbons/aromatics.   The
thirty-five VOC's tested for are  as  follows:
-benzene.
-broraodichloromethane.
-bromoform.
-bromomethane.
-carbon tetrachloride.
-chlorobenzene.

-------
                                                                             146

[r28] continued.

-chloroethane.
-chloroform.
-chloromethane.
-dibromochloromethane.
-1,2-dichlorobenzene.
-1,3-dichlorobenzene.
-1,4-dichlorobenzene.
-dichlorodifluoromethane.
-1,1-dichloroethane.
-1,2-dichloroethane.
-1,2-dichloroethane. (total)
-1,2-dichloropropane.
-cis-1,3-dichloropropene.
-trans-1,3-dichloropropene.
-ethylbenzene.
-methylene chloride.
-1,1,2,2-tetrachloroethene.
-tetrachloroethene.
-toluene.
-1,1,1-trichloroethene.
-1,1,2-trichloroethene.
-trichloroethene.
-trichlorofluoromethane.
-vinyl chloride.
-meta xyLene.
-o—xylene.

[r31]
Analytical  results  collected  during the  phase  I  groundwater
monitoring  program are discussed  in  section  4.1.   Appendix  B
contains  the complete  laboratory results  from  these  analyses.
Table 4-1 shows the concentrations of  volatile  organic  chemicals
detected in phase I groundwater monitoring wells.  One upgradient
well, three downgradient wells, and a domestic well (Yubeta Well)
were sampled at ten-week  intervals.   All  the groundwater samples
were analyzed by Analytical Technologies, Inc.  of Tempe, Arizona
for  volatile  organic  carbons  (EPA method  624),  total organic
carbon, and total phenols.

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                                                                             147
[r31]
The locations of  the  five  monitoring wells drilled in  phase  II,
to  define  and monitor  the horizontal  extent  of  groundwater
contamination are shown in figure 4-5.   The  groundwater sampling
procedures  for  phase  II  groundwater  monitoring program  are
discussed in section 5.2.   The sampling and analysis requirements
and schedule is included in section 5.4.  Table 5-1 is  a  list of
the analytical methods to  be  done on all the groundwater samples.
Following the installation of  phase II wells, testing  for  total
organic  carbon  and nitrates  are to  be done  every 6  months  on
every  monitoring  well  and  the  Yubeta  Well, and testing  for
volatile organic compounds (EPA method 624) are to  be done  every
3  months on all  the monitoring  wells and  every month  on  the
Yubeta Well.  Chain of  custody procedures is  included in  section
5.3.

Cr48]
Occurrence  of  trichloroethylene  (TCE)  in the Upper  Santa  Cruz
Sub-Basin and possible sources of contamination are discussed.
(p 11-11, Figure II-4)

Cr56]
Organic  water  quality information  from 45  wells (domestic  or
monitoring)   in  Santa Cruz  County,  sampled  from  1986-1987,   is
discussed.  The following  information is-given:
—well number.
-well location (township,  range,  section).
-groundwater basin.
-well owner name.
-date sampled.
-collection agency.
-laboratory doing  analyses.
-parameter being tested.
 1,2-DCA
 carbon tetrachloride
 chloroform
 freon-11
 methylene chloride
 PCE
 TCE
 1,1,1-TCA
 1,2-Dichloropropane
 1,3-Dichlorobenzene
 benzene
 cholbbenzene
 ethylbenzene
 t-l,2-DCE
 1,1-DCE
 bromodichloroethane
 toluene
 chloroethane and  vinyl  chloride
 bromoform

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                                                                             148
[r57]
There  are three organic  contaminant groups  for  which standards
are set,  synthetic organics, volatile  organics,  and disinfection
by-products.   An organic  chemistry  sample from each water source
is required once every  three years  for all  water  systems with a
population  of more than  10,000.   Sampling frequency  is  also
determined  by whether  or not  the  system  is considered to  be
vulnerable to  organic contamination.

[r57]
Synthetic organics are  man-made carbon containing chemicals, the
ones that are  currently regulated are  pesticides  and herbicides,
the list includes:
-2,4-D.
—lindane.
-methoxychlor.
-endrin.
-2,4,5-TP.
-toxaphene.

[r57]
Most volatile  organics are industrial chemicals and solvents, the
list of regulated volatile organics includes the following:
-trichloroethylene.
-benzene.
-carbon tetrachloride.
-1,2-dichloroethane.
-para-dichlorobenzene.
-1,1—dichloroethylene.
-1,1,1-trichlorethane.
-vinyl chloride.

Cr57]
Disinfection  by—products  are  chemicals which  are  formed  when
chlorine is added to  water that contains organic matter, the ones
that are currently regulated are Total  Trihalomethanes (TTHMs).

[r57]
The  following is  a  list of  unregulated volatile  organics  that
require monitoring:
—bromobenzene.
-bromodichloromethane.
-bromoform.
-bromomethane.
-chlorobenzene.
-chlorodibromomethane.
-chloroethane.
-chloroform.
-chloromethane.
-o-chlorotoluene.
-p-chlorotoluene.
-dibromomethane.

-------
                                                                              149

 [r57] continued.

-m-dichlorobenzene.
-o-dichlorobenzene.
-trans-1,2-dichloroethylene.
-cis-1,2-dichloroethylene.
-dichloromethane.
-1,1-dichloroethane.
-1,1-dichloroethane.
-1,1-dichloropropene.
-1,2-dichloropropane.
-1,3-dichloropropane.
-1,3-dichloropropene.
-2,2-dichloropropane.
-ethylbenzene.
-styrene.
-1,1,2-trichloroethane.
-1,1,1,2-tetrachloroethane.
-1,1,2,2-tetrachloroethane.
-tetrachloroethylene.
-1,2,3-trichloropropane.
-toluene.
-p-xylene.
-o-xylene.
-m-xylene.
—ethylene dibromide.
-1j2-dibromo-3-chloropropane.
-bromochlororaethane.
-n-butylbenzene.
-dichlorodifluororaethane.
-fluorotrichloromethane.
-hexachlorobutadiene.
-isopropylbenzene.
-p-isopropyltoluene.
-naphthalene.
—n—propylbenzene.
-sec-butylbenzene.
-tert-butylbenzene.
-1,2,3-trichlorobenzene.
-1,2,4-trichlorobenzene.
-1,2,4-trimethylbenzene.
-1,3,5-trimethylbenzene.

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                                                                              150
[r61]
There  are  seven existing  monitor wells  located on  site  at  the
Nogales IWWTP.  Results of  samples  analyzed from these wells  can
be obtained from ADEQ, Office  of  Water Quality.  On  site monitor
wells  are  sampled  semiannually and  analyzed  for  the following
parameters:
-bromodichloromethane.
-bromoform.
-bromomethane.
-carbon tetrachloride.
-chlorobenzene.
-chloroethane.
-2-chloroethylvinyl ether.
-chloroform.
-chloromethane.
-dibromochloromethane.
-1,2-dichlorobenzene.
-1,3-dichlorobenzene.
-1,4-dichlorobenzene.
-dichlorodifluoromethane.
-1,1-dichloroethane.
-1,2-dichloroethane.
-1,1-dichloroethene.
-trans-1,2-dichloropropene.
—methylene chloride.
-1,1,2,2,-tetrachloroethane.
-tetrachloroethene.
-1,1,1-trichloroethane.
-1,1,2-trichloroethane.
-trichloroethene.
-trichlorofluoromenthane.
-vinyl chloride.
-benzene.
-chlorobenzene.
-1,2-dichlorobenzene.
—1,3-dichlorobenzene.
-1,4-dichlorobenzene.
-ethylbenzene.
-toluene.

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                                                            151
MICROBIOLOGICAL CHARACTERISTICS

-------
                                                                             152
 [rl]
 Fecal  coliform levels in  surface  water  samples,  well samples and
 raw sewage effluent are discussed.
 (p 54-55).

 [r4]
 Fecal  coliform  levels  in  14  water samples  from  Agua  Prieta,
 Nogales and  Cananea  are  reported  including the  following sample
 information:
 —sample number.
 -sample location.
 -sample date and time.
 -sample description.
 -fecal coliform counts/100 mis.

 Cr7]
 This   file  contains  bacteriological  surface  water   quality
 analyses.  Sample sites  in the city  of  Nogales, Arizona,  sample
 dates  range  from  February 1986  to March  1988.  The  following
 information is included:
 -sample identification number.
 -sample date and  time.
 -type of sample.
 -lab responsible  for analyses.
 -total coliform.
 -fecal coliform.
 -sample appearance.

 Cr27]
 Appendix  C contains bacteriological  water  quality  analyses  for
 the 1987 samples  collected at C. G.  Conn Facility.   The  following
 information is included:
-well ID.
-total coliform level.
—well depth.
-static water level.
-type of sample.
-sample appearance.
—weather conditions.

 Cr46]
 Concern of fecal  coliform  levels in Nogales  Wash .and  possible
 sources of contamination are discussed.
 (p 3-14, Appendix A-17-26-27)

 [r57]
 Sampling frequency  for bacteriological parameters is  based on the
type of  water system,  source  of  water supply, and population
 served.  All public water  systems  are required  to submit  at least
one sample per month.  All samples are  tested  for  total  coliform
bacteria.   The  bacteriological  report  contains  the  following
information:

-------
                                                                             153

[r57]  continued.

-water system code number.
-specimen number.
—sample type.
-time of sample collection.
-date of sample collection.
—analysis method.
-total coliform count (colonies per 100ml.)
-date of analysis.
-laboratory sample number.
-location of sample.
-maximum contaminant levels (MCLs).

Cr61]
This  file  contains the bacteriological  report of Nogales  IWWTP
effluent sampled  in April and  May  of  1987.   Nogales IWWTP
effluent is  sampled  weekly  for total  coliform bacteria,  the
following is included in a bacteriological report:
-volume of sample.
-Enteric virus.
-Ascaris lumbricoides.
-Giardia lamblia.
-Entamoeba.
—common large tapeworm.

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                                                   154
WATER SYSTEMS

-------
                                                 155
WATER USE

-------
                                                                             156
[3]
Current  DWR/TAMA  per capita  water  consumption rates  and future
rates for predicted population growth for City of Nogales Arizona
(p 4).

[6]
Water use including consumptive agricultural, municipal, domestic
and miscellaneous for The Buena Vista Study Area (p 59 -61).

[7]
The following information on  water uses  for  the City of Nogales,
Town and Country Terrace, Valle Verde, Tubac Valley, and Rio Rico
is described:
—Demands on supply system.
-Water uses by catagory.
-single family and multi-family uses.
-Costs and rate structures.
—Conservation programs.
—Water adaquacy study.
-Utility rate report.
-Reports on violation of groundwater codes.
-Conservation requirements.
-Projections for annual water consumption and production costs.

[9]
Water  use  data  for  the City  of  Nogales  water  service  area.
Information included as follows:
-Water use history.
-Water use projections.
-Water demand / City of Nogales system.
-Conservation requirements.
(p 8-12, table 4, figure 2).

C9]
Projected water requirements  City of Nogales water system.
(p 12-13, tables 5-6).

[19]
Present and  future  water  requirements  for planning  districts
including Santa Cruz County.   Information included as follows:
-Projected urban withdrawels.
-Projected urban depletions.
-Projected urban reclaimed wastewater.
(p 22-30).

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                                                                            157
[23]
Characteristics of  industrial and  municipal  water  use  in  the
Tucson Active Management Area described.   Information  included as
follows:
—Inventory of municipal providers.
-1980 municipal water use patterns
—Large municipal provider water use  summary.
-Rights to withdraw groundwater for  industrial  use.
-Water use patterns for;
  Metal mining sector
  Turf-related industries
  Electric power
  Sand and gravel
  Other industrial users
(p V-l - V-4 and VI-2 - VI-36).

[36]
Water uses  described  for  the   Sonoita   Creek  Watershed.
Information included as follows:
—Water demands including municipal and  domestic.
-Total forcasted water use in Patagonia and Sonoita  to the
 year 2000.
-Recreational uses.
-Agricultural uses.
-Rural uses.
(p 52-59).

[39]
Water  use  and  demand  for  Tubac  Valley Country  Club Fairway
Estates is presented.  Information included as  follows:
-Historic water demand and type of development.
—Irrigated agriculture.
-Grandfathered water rights.
-Domestic use.
-Turf use.
-Future water demands.
(p 3-1 -3-8).

[40]
Water  use  both  historical an  current described for the  Tubac
Valley Water Company  Study Area.    Information  included  as
follows:
-Historic demands.
-Turf demands.
-Domestic use.
-Future demands.
(p 3-1 - 3-4).

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                                                                              158
 [43]
 Water  demands and  uses for  the Wingfield  Cattle Company  study
 area,  near Tubac, Santa Cruz County is  described.    Information
 included as follows:
 -Historic  water demands.
 -Demand within the area of proposed development.
 —Demand in adjacent areas.
 -Development  of projected future water demand.
 -Production and uses of wastewater.
 (p 3-1 - 3-5).

 [44]
 Water  demands and uses for the  Todd  Ranch study  area Santa  Cruz
 County are described.  Information included as  follows:
 -Histroic  water demand.
 -Planned development of demand.
 -Future water demands including;
  Irrigation
  Domestic
  Demand other than domestic
 -Waste water  production and disposal.
 (p 3-1 - 3-4) .

 [45]
 Water uses and demands for the Sonoita Creek Ranch study  area are
 presented.  Information included as follows:
 -Current domestic demands.                        •
 —Historic  water uses.
 -Irrigation,  turf, stock uses.
 (p 4-2 - 4-5).

 [58]
 Water uses and losses for the  Upper Santa  Cruz  River Basin are
 presented.  Information incluede as follows:
 -Mean annual consumptive use patterns.
 -Magnaitude of groundwater uses.
 —Benificial and non—beneficial uses.
 -Phreatophyte use.
 —Consumptive use of water by crops.
 -Water use coefficients.
-Municpal and industrial pumpage.
 -Consumptive use of water by mines.
-Miscellaneous uses.
 (p 26-31,  44-58,  73-75, 105-109).

 Cr51]
 Historic and  present  day  water use  in  the  Swab study  area is
 discussed,  (p 11-12)

 [r52]
 Existing water use in the Nogales area is discussed.
 (p 6-1 to 6-3, appendix C)

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                                                                             159
Groundwater uses and  the  effects  of use in  the  Upper Santa Cruz
Basin is discussed,  (p 5-14)

-------
                                                      160
WASTE WATER SYSTEMS

-------
                                                                             161
 [1]
 Discussion  of  the  C.G.  Conn Ltd.  industrial  waste water  plant
 near confluence of Nogales Wash and Potero Creek (p 13-15).

 [3]
 Disscussion  of  efluent released  from the Nogales  International
 Wastewater Treatment Facility (p 4).

 [7]
 The following waste water information for the City  of  Nogales  is
 described:
 -Influent flows to waste treatment facilities.  .
 -Authorization of effluent.
 -Monotoring requirements.

 [29]
 General description of sewage disposal systems  and  needs  for the
 communities in Santa Cruz  County,  AZ (p  3).

 [36]
 General  items  concerning   waste water  systems  are  described.
 Information included as follows:
 -Waste water reuse.
 -Effluent discharge.
 -Sewage treatment facilities.
 -Effluent reuse.
 -Importation of water into the  basin.
 (p 45-48).

 [r5]
 Location and description of  IWWTP.  (p  1-3)
 Amount of effluent inflow  and effluent discharge per day.  (p 3)
 Discussion of sewage effluent recharge,  (p 15)

 [r!2]
 This  report  discusses  the  Nogales  International  Wastewater
 Treatment Plant (IWWTP), the following information  is included:
 -location of IWWTP.
 -area serviced by IWWTP.
-present average  influent  flow.
-treatment processes used.
-discharge to the Santa Cruz River.
-proposed expansion  influent  flow  and  revised treatment
 processes.
-present discharge impact  area  and  projected maximum discharge.
      impact area for the  plant  expansion.
-chemical analysis of effluent  from the Nogales  IWWTP.

 [r!3]
 Potential conversion  of  nitrogen  forms  to  nitrate,  in the
 effluent  discharged  into  the  Santa Cruz River by  the  Nogales
 IWWTP is discussed.  (p 5-10)

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                                                                             162
[r!3]
The potential impact of  increased  effluent  flow  due to expansion
of  the  plant  on  groundwater  quality in  the  study  area  is
discussed.   The  infiltration rate  of  the  effluent and  the
recharge sites are discussed.  (p 10-11)

[rl3]
Proposed effluent  monitoring is discussed  and table  2  presents
the proposed monitoring schedule for effluent.   It is as follows:
Continuous
           Flow Rate

           Total Residual Chloride

               Settleable Solids        Suspended Solids
               Fecal Coliform Bacteria
Monthly
      Nitrate            Copper
      Organic Nitrogen   Mercury
      Ammonia Nitrogen

Quarterly
      Arsenic            Chromium
      Barium       •      Cadmium
      Lead               Silver

Annually
      Major Cations
      Major Anions
      Fluoride
      Boron
      Electrical Conductivity
      Total Dissolved Solids
      Iron
      Manganese
(p 11-15)
     Phenolics
     Total Phosphates
     Cyanide
     EPA Method 601
Zinc
Selenium
Total Organic Carbon
Volatile Organic Chemical
    (EPA Method 624)
Acid-Base Neutrals
     (EPA Method 625)
[r!6]
A general discussion  of the quality  of  the wastewater  from  the
sewage treatment  plant located  in the  Sonoita Creek  Watershed
study area is included.   About 95% removal of  BOD  and  suspended
solids is accomplished.   Total dissolved  solids  are around  800
ppm and fecal coliforms are usually totally removed.
(p 46-47)

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                                                                            163
[r29]
C.  G.  Conn solid  waste  facility  is  described.    Information
regarding potential release from solid waste management units is
discussed.   The  following units  are described;  surface
impoundment, land  farm,  container storage  area,  and  wastewater
treatment  units.   For each  unit the  following  information is
provided:
-type of unit.
-location of the unit at the facility on a  topographic map.
-general dimensions and capacity.
-whether unit is currently  operating.
-description of wastes that were placed in  the  unit,
 quantities and volumes.
 data on any prior or current releases of waste.
 date of release.
      type of waste released.
 quantity of waste released.
 nature of release (spill,  overflow,  ect.).
—description of  the closure,  cleanup,  chemical analysis and any
 remedial actions with the  unit.

Cr31]
In  section 3.0 this  report  discusses   C.  G.  Conn  surface
impoundment history.  The following items are discussed:
-types of sanitary waste.
-types of industrial waste.
—sanitary waste discharge,  types and  volumes..
-industrial waste discharge,  types and volumes.
Table  3-1  is  a summary  of  estimated total discharge  to the
surface impoundment.

Cr52]
This  report  includes a discussion  of  the existing  wastewater
treatment  facilities  in  the  Nogales area.    The  following
information is  included:
-wastewater sources.
-wastewater flow rates,
 average day.
 monthly average.
 maximum day of month.
 minimum day of month.
 annual average.
 peak flow
—wastewater treatment  plant loading rates.
-present and projected wastewater quality (effluent)
 temperature.
 pH.
 dissolved oxygen.
 biochemical oxygen demand.
 suspended solids.
 settleable solids.
 fecal coliforms.

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                                                                             164

[r52] continued.

 chlorine residual.
-population served.
-treatment plant type and design.
-effluent disposal,
 design capacity.
 effluent discharge point.
(p 7-1 to 8-12)

[r60]
Included in  this  file  is  the  Groundwater  Quality  Protection
Permit No.  G-0006-12,  for  the  Nogales  International  Wastewater
Treatment Plant.   The  information included in this  permit is as
follows:
-location of the IWWTP.
-owner of the IWWTP.
-disposal methods
 pre-treatment facilities.
 complete mix lagoons.
 partial mix lagoons.
 lagoon liners.
 lagoon berms.
 filtration facilities.
 disinfection.
-unauthorized materials list.
-discharge source limits.
-operational practices.
-groundwater monitoring requirements.
-monitor well locations.
-sampling protocol.
-sampling frequencies and parameters.
-effluent monitoring
 flow rate.
 parameters.
-stream monitoring
 sample locations.
 parameters.
—reporting frequency.
-contingency requirements.
—post—closure plan.
—compliance schedule
 pertains mainly to nitrification.
-general responsibilities.
-groundwater quality standards.

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                                                                             165
Cr60]
Included in this  file  is  the  notice of disposal revision for the
Nogales  International  IWWTP  Expansion Project.   This  document
contains the following information:
-location of IWWTP.
-facility manager.
-facility owner.
-all disposal locations.
-methods of treatment conducted at facility.
-date facility will begin operation.
-disposal activities.
-treatment  processes  and control  measures  designed  to  protect
 groundwater quality.
-groundwater use of receiving aquifer.
-depth to groundwater.
-types of wastes generated.
-disposal schedule.
-flow rates
 average daily flow.
 approximate daily minimum.
 approximate daily maximum.
 design capacity.
-existing groundwater quality monitoring program.

Cr60]
Included in this file is the Authorization To Discharge Under The
National  Pollutant  Discharge  Elimination  System  Permit  No.
AZ0020150, for the City of  Nogales.   The  information included in
this document is as follows:
-location of the Nogales IWWTP.
-location of discharge point on the Santa Cruz River.
-effluent limitations  and  monitoring  requirements  based  on a
 design treatment capacity of 31,037 cubic meters per day.
-reporting of monitoring results.
-retention of records.
-records contents
 date, place, and time of sampling.
 the individuals who performed the sampling.
 date analyses were performed.
 individuals who performed the analyses.
 analytical techniques or methods used.
 results of analyses.
-reporting requirements.
-operation and maintanence of pollution controls.
-pretreament of industrial wastewaters.
-list of toxic pollutants tested for.

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                                                                            166
[r61]
This  file  contains Nogales  International  Wastewater  Treatment
Plant  Month  Reports for the  years  1984, 1985,  and  1986.   The
following information is included in these reports:
-date (daily record is kept).
-rainfall in inches.
—wind direction.
-inflow temperature.
-effluent temperature.
-flow in M.G.D. (average, minimum, maximum)
 from Mexico.
 from United States.
 plant inflow.
 plant outflow.
-effluent dissolved oxygen.
-pH (raw and effluent)
-suspended splids (raw and  effluent).
-settleable solids (raw and  effluent).
-BOD (raw and effluent).
-chlorine residual in 15 minutes.
-fecal coliforms per 100 ml.

Cr62]
Effluent violations  at  the NIWWTP,  due to  increased inflow is
discussed  and  possible  solutions  with  plant  expansion are
mentioned.   (p 2)

[r62]
The effect  to the  groundwater  quality  in the area,  due to the
plant expansion is expected  to be very minimal.   (p  11)

[r62]
The  following  information  about  the  existing  Nogales
International Wastewater Treatment Plant  is provided:
-flow rate of 100-year  design  flood.
—design storage capacity.
-average daily flow.
-existing facilities.
-point of effluent discharge.
-influent flow rates.
-collection  and transportation of  wastewater  by  the Nogales
 International Outfall  Pipeline.
-effluent violations of NPDES  Permit limits.
-treatment alternatives.
-effluent disposal or  reuse  alternatives.
-environmental impacts.
(p 3-13)

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                                                                             167
Cr63]
This report discusses  the  plant expansion of the  NIWWTP  and the
additional capacity  for Mexico's  part in  the expansion.    The
following information is included:
—location map.
-existing NIWWTP capacity.
-proposed expansion total treatment capacity.
-additional capacity for Mexico's part.
-proposed  agreement  with  Mexico  about the  plant expansion and
 prevention of pollution problems in the United States.
-alternate treatment methods.
-environmental impacts of the  expansion.
(p 1-8)

Cr64]
This  report  discusses  the  existing  Nogales  International
Wastewater Treatment  Plant  and  the  design  for the expanded
NIWWTP.  The following information is included about the existing
NIWWTP:
-date of first operation.
-NPDES effluent limitations.
-total retention time.
—annual average daily flow.
—annual average daily BOD..
—annual average total suspended solids.
(p 1-1 to 3-2)

Cr64]
Discussion of  the design  for the  expanded  NIWWTP includes the
following information:
-expanded treatment process.
-anticipated  NPDES effluent limitations.
-influent design characteristics
 average daily flow.
 peak daily flow.
 minimum daily flow.
—influent wastewater  characteristics
 BOD.
 total suspended solids.
—wastewater treatment facilities
 preliminary  treatment facilities.
 short detention time aerated  lagoons.
 filters.
 UV disinfection.
 effluent flow meter  and sampler.
 influent flow meter  and sampler.
(p 1-1 to 4-7)

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                                                       168
DISTRIBUTION SYSTEMS

-------
                                                                             169
[3]
City of Nogales water distribution system map (figure 5).

[3]
City of Nogales water service area and well fields map
(figure 6).

[6]
Effects of proposed appropriations in the Buena Vista Study Area
(p 78 - 88, figures 19, 4, tables 8, 2, C-2 - C-3).

[7]
The following  information on water  distribution  systems for the
City of  Nogales,  Town  and Country  Terrace,  Valle  Verde,  Tubac
Valley, and Rio Rico is described:
-Deliveries to system.
-Monthly water sales summaries.
-Monthly meter reading reports.

[8]
List of water  providers in the  Tucson  AMA,  providers listed only
for those in Santa Cruz County.  Following providers listed:
—Koa Amado
-Olivas, Filberto.
-Citizens utilities (Tubac Valley Water Company).
-Boca Flat.
-Citizens utilities (Rio Rico).
-Wingfield Water Systems.
-Valle Verde.
-RMH and S.
-Pottinger and Johnson.
-Town and Country Terrece.
-City of Nogales.
-Yerba Buena (Kino Springs).
-Buena Vista Public Service (currently being considered for
 purchase by City of Nogales).

[9]
Analysis of  existing  water system City of  Nogales.   Information
included as follows:
-General information.
-Sources of supply.
 well supplies
 surface supplies
 CAP supplies
-Transmission  systems.
-Storage system and pressure zones.
—Evaluation of reservoir capacity.
-Zones flows and storage.
(p 14-30, table 7).

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                                                                             170
 C9]
 Proposed  improvements  to  City  of  Nogales  water  system.
 Information included as follows:
 -Service  area additions.
 —Supply system improvments.
 -Transmission system improvements.
 -Reserviors and pressure zones.
 -Distribution system and miscellaneous improvements.
 -Hydraulic analysis of improved system.
 (p 30-47, figures 3-6).

 [9]
 City of Nogales water system operation and maintenance
 (p 47-55).

 [17]
 Existing  facilities  for the RHM&S  Water Company Are  described.
 Information included as follows:
 -Storage  and pressure zones.
 -Sources.
 -Production facilities.
 -Booster  capacity.
 (p 11-15).

 [18]
 Information on  the  Potrero Water  Company is  described.    This
 provider  has  been incorporated into  the City  of  Nogales  Water
 System since  the  publication   of  this  report.    Information
 included  as follows.
 -General  information.
 -Operating income statement.
 -Depreciation schedule.
 -Water company summary.
 —Water company distribution system,  services,  meters.
 —Water company wells, pumping,  plans,  chlorinators, and
 reservoirs.
 (p 1-17).

 [29]
 General   description  of  water   supply  systems and  needs  for
 communities in Santa Cruz  County,  AZ (p 2).

 [32]
 Described are  water suppliers for  Santa  Cruz  County,  Arizona.
 Information included as follows:
-Supplier name.
-Type of owner.
-Population served.
-Number of service connections.
—Average daily production  (millions  of gallons per day).
-Sources of water.
 (p 192).

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                                                                             171
[40]
Generalized  description  of  The Tubac  Valley Water  Companies
distribution system (p 3-4 - 3-5).

[r33]
Three water supply companies are within 3 miles of the C. G. Conn
facility;  City  of Nogales Water System,  Valley  Verde  Water
Company, and the Valley Verde and Gold Hills Water Company.  Area
of. service  for  these  companies are given.  Also  several private
wells, many  of  which  serve industrial and  commercial  plants are
discussed.
(p. 5, Appendix A-9)

[r52]
The city of  Nogales existing  water sources, their  locations, and
capacities are discussed.  Existing water sources include:
-Yerba Buena Basin
-Nogales Wash well field
-Ephraim Canyon wells
-Potrero Water Company.
(p 6-1, Plate 6-1)

[r52]
The following water service areas are discussed:
-City of Nogales.
-RMH&S Land Co., Inc.
-Kincoa Water Company  of Arizona.
-City of Nogales-Potrero area.
-Valle Verde Water Company.
-Citizens Utilities-Rio Rico.
(Plate 6-5)

[r52]
Proposed new water sources include:
-subsurface water in  Nogales Wash.
-Calabasas Basin.
-surplus surface water flows in Sonoita creek  at Patagonia Lake.
(p 6-6 to 6-7)

[r57]
It is the duty of  the  ADEQ Office of Water  Quality,  to determine
the compliance status  of Arizona's public water  systems  with the
standards  and  regulations  set  by  the Environmental  Protection
Agency to  carry out   the  provisions  of  the Safe  Drinking  Water
Act.  The Arizona Safe Drinking Water Information System (ASDWIS)
is a computer database that contains  information for  managing the
operation of  all  public water  systems  in the state of  Arizona.
It is  a multi-user   system  that uses  dBase III  Plus.    The
following is  a  list   of  the water systems  in Santa Cruz County
Arizona:
-Citizens Utilities Company, Tubac.
-Buena Vista Public Service Cor.

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                                                                              172

[r57] continued.

-Nogales Water Department.
-Sonoita Valley Water Company.
-Patagonia' Water Department.
-Nogales,  City of Water Department.   (inactive)
-Valle Verde Water Company.
-Sonoita Water Utility.
-Citizens  Utilities Company, Rio Rico.
-Santa Cruz Water Co.
-Kino Ranch Limited #1.
-Nogales Water Department RMHS  (inactive)
-Kino Ranch Limited #2.
-Citizens  Utilities Co. Well #8.   (inactive)
-Arizona Dotr-Sonoita Yd.
-Casa Arroyo Home Owners Assn.
-Santa Cruz Valley School-Casabasas.   (inactive)
-Santa Cruz Valley School, Tubac.
-Valley of Thousand Oaks, Patagonia.
-Valley Verde Water Company, Los Minas.   (inactive)
-Sonoita Meadows.
-Santa Cruz County Fair and Rodeo.
-Steak Out, Sonoita Mercantile.
-Granada MHP, Tumacacori.
-Bohns Trailer Park, Patagonia.
-Arizona Parks Board, Patagonia Lake  State Park.
-Nogales, Wastewater Plant System.
-Mi Casa RV Campground.
-Mountain View Campground, Amado KOA.
-Pena Blanca Lodge.
-Southern Water Corporation, Sonita.
-Rolling Wheels MHP, Patagonia.
-Amado Greyhound Park.  (inactive)
-Town and Country Terrace Mobile,  Nogales.
-Madera Canyon IMP Association, Amado.
-Tubac Trailer Tether.
-Nogales Service Center.
-Arizona Parks Board, Tubac Presipio  Sp.
-Mt. Hopkins, Smithsonian Inst.
-El Rancho Drive-in.  (inactive)
—Smithsonian Amado.
-Coronado National Forest, Pena Blanca Spr.
-Coronado National Forest, Atascosa Lo.   (inactive)
-Coronado National Forest, Nogales RS.
-Coronado National Forest, Canelo RS.  (inactive)
-Coronado National Forest, Nadera Canyon.  (inactive)
-Coronado National Forest, Bog Spring.
-Tumacacori National Monument Well.
-Santa Cruz Health Department.

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                                                                             173
[r57]
Water systems are classified as one of four types:
-community.
-non-community.
-non-transient, non-community.
—semi—public.

[r57]
The  files  date  from  October  of 1974  to  the  present.    The
following  general  information  about each  water  system,  is
included:
-system ID.
-system name.
—plant type (community or noncommunity).
-activity.
-water source.
-river basin.
-number of wells.
-population served.
-number of service connections.
-date system began operation.
—number of sources.
-owner name.
-plant mailing address.
-plant operator.
-date of last Sanitary Survey.
-number of service connections equipped  with water  meters.
—average production in gallons per day.
-maximum daily production capacity.
-approved design capacity.
—emergency capacity.
-storage capacity.
-type of service area.
-treatment types.
-sanitation survey date.
—operation and maintenance rating.
-enforcement and public notice data of any violations.
-all laboratory results.

[r58]
This report is  compiled annually by the Office of  Water  Quality
and it summarizes the compliance status  of Arizona's public  water
systems  with  the  states  drinking water  rules.    This  is  the
eleventh report  of  this  type  and it  contains  the  following
information:
-water system classification.
-excluded water systems.
—compliance levels.
-compliance criteria.
-statistical summary of systems in compliance.
-public notification of violations.
-bacteriological monitoring and quality.

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                                                                              174

[r58] continued.

—inorganic chemical monitoring and quality.
-radiochemical monitoring and quality.
-organic chemical monitoring and quality.
-trihalomethane monitoring and quality.
—turbidity monitoring and quality.
-corrosivity monitoring.
-certified operator list.
—operation and maintenance ratings.
-compliance schedule.

Cr59]
This  booklet  discusses  the  requirements  for  operators of  small
water systems  to  comply with the  Safe Drinking  Water Act.   The
following information is included:
-requirements of the Safe Drinking Water Act
 sampling and reporting.
 record keeping.
 public notification.
-types of drinking water standards.
-contaminant groups and the MCLs for each  contaminant
 microbials.
 inorganics.
 synthetic organics.
 volatile organics.
 radionuclides.
 disinfection by-product.
-routine sampling frequencies.
-check sampling requirements.
-location of sampling points.
-sampling procedures
 type of container.
 volume of water required.
 preservation.
 filling requirements.
 hold times.
—reporting requirements
 sample results.
 MCL violations.
 failure to monitor.
 public notification.
-record keeping requirements
 bacteriological reports.
 chemical reports.
 action taken to correct violation.
 sanitary survey reports.
 variance or exemption records.
-public notification requirements.
(p 1-38)

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                                                        175
BIBLIOGRAPHIC REFERENCE

-------
                                                          176
SORTED BY REFERENCE NUMBER

-------
                                                                           177
The Earth Technology Corporation, 1988. Final Summary Report Task
Assignment E-3 Nogales Wash Area Nogales,  Arizona.   Prepared for
Arizona  Department  of Environmental  Quality, Earth  Technology
Corporation,  Phoenix,  AZ, June.

[2]
The  Earth TechnoT.ogy  Corporation,  1988.  Final  Groundwater
Sampling Plan  Task Assignment E-3  Nogales  Wash Area  Nogales,
Arizona. Prepared  for  Arizona  Department  of  Environmental
Quality, Earth Technology Corporation, Phoenix,  AZ,  June.

[33
Pina, Rene A. G. E.I.T.  1986.  Desktop Study:   Water  Resources in
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[no]
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Kenneth D.  Schmidt and  Associates,  1988.    Draft  Hydrogeologic
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Kenneth  D.  Schmidt  and  Associates,  1988.    Addendum  to
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[r!9]
Halpenney,  L.  C,,  1984.   Evaluation  of  Adequacy of Groundwater
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Halpenny,  L.  C.,  1982.   Evaluation of  Adequacy of Groundwater
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Woodward-Clyde Consultants,  1988.   RCRA Closure  of  Hazardous
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[r26]
Woodward-Clyde Consultants,  1988.   RCRA Closure  of  Hazardous
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[r27]
Woodward-Clyde  Consultants,  1988.   Comprehensive Groundwater
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[r28]
Woodward-Clyde  Consultants,   1987.   RCRA Closure  of Hazardous
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[r29]
Arizona  Department  of  Environmental Quality,  1987.
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Cr31]
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Anderson, T. H. and Silver,  L. T., 1986.  The Border Connection-
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Robertson, F.  N.,  1986.   Occurrence  and Solubility Controls  of
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Arizona  Department of  Health  Services,  1987.   Groundwater
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Simons, F.  S.t 1974.  Geologic  map and  sections  of the Nogales
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Nemecek,  E.  A.,   1974.   Map  Showing  Quality  of  Ground  Water,
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Arizona  Resources  Information System,  1976.    Map showing  the
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Arizona  State  Water Commission, 1972.   Map  Showing  Vegetation,
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Arizona  State  Water  Commission,  197':.   . Map  Showing  Well  Water
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Department of  the  Interior,  1957.    Topographic  Map of  Ruby
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Department of  the  Interior,  1958.   Topographic  Map  of  Nogales
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Department of  the  Interior,  1958.   Topographic  Map  of  Lochiel
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Department of  the Interior,  1958.   Topographic Map of Sunnyside
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Department of  the  Interior,  1957.   Topographic  Map of  Tubac
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                                                                            195
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 Department  of  the  Interior,  1958.   Topographic Map  of Mount
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 Department  of  the  Interior,  1958.   Topographic Map  of Elgin
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 [r953              .                   •                         '
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Kluth,  Charles  Frederick,  1982..    The Geology  And  Mid-Mesozoic
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Bittson, Andrew George,  1976.   Analysis  Of Gravity Data  From The
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Crl5]
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Cr51]
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[r29]
Arizona  Department  of  Environmental  Quality,  1987.
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Arizona Department of Environmental Quality,  1989.  Arizona  Safe
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                                                                             212
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                                                                           213
[r72]
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