U.S. ENVIRONMENTAL PROTECTION AGENCY
       Annapolis Field Office
      Annapolis Science Center
     Annapolis, Maryland  21401
           DATA REPORTS
            Volume  11

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                          Table of Contents


                              Volume 11
20         Water Quality of the Potomac Estuary Transport
           Study - 1969-1970
21         Water Quality Survey of the Piscataway Creek
           Watershed - 1968-1970
22         Water Quality Survey of the Chesapeake Bay in
           the Vicinity of Sandy Point - 1970
23         Water Quality Survey of the Head of the
           Chesapeake Bay Maryland Tributaries -  1970-1971
24         Water Quality Survey of the Upper Chesapeake Bay
           1969-1971
25         Water Quality of the Potomac Estuary Consolidated
           Survey - 1970
26         Water Quality of the Potomac Estuary Dissolved
           Oxygen Budget Studies - 1970
27         Potomac Estuary Wastewater Treatment Plants Survey
           1970
28         Water Quality Survey of the Potomac Estuary
           Embayments and Transects - 1970
29         Water Quality of the Upper Potomac Estuary Enforcement
           Survey - 1970
                                                          next page

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                           Table of Contents  (continued)


                               Volume 11
30         Water Quality of the Potomac  Estuary -  Gilbert Swamp
           and Allen's Fresh and Gunston Cove - 1970
31          Survey Results of the Chesapeake Bay Input Study -
           1969-1970
32         Upper Chesapeake Bay Water Quality Studies -  Bush River,
           Spesutie Narrows and Swan Creek,  C & D Canal , Chester
           River, Severn  River, Gunpowder, Middle and Bird  Rivers  -
           1968-1971
33         Special  Water Quality Surveys of the Potomac  River  Basin
           Anacostia Estuary, Wicomico River,  St.  Clement and
           Breton Bays, Occoquan Bay - 1970-1971
34         Water Quality Survey of the Patuxent River - 1970

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                            PUBLICATIONS

                U.S.  ENVIRONMENTAL PROTECTION AGENCY
                             REGION III
                       ANNAPOLIS FIELD OFFICE*


                              VOLUME 1
                          Technical  Reports


 5         A Technical  Assessment of Current Water Quality
           Conditions and Factors Affecting Water Quality in
           the Upper Potomac Estuary

 6         Sanitary Bacteriology of  the Upper Potomac Estuary

 7         The Potomac Estuary Mathematical Model

 9         Nutrients in the Potomac  River Basin

11         Optimal  Release Sequences for Water Quality Control
           in Multiple Reservoir Systems


                              VOLUME 2
                          Technical  Reports


13         Mine Drainage in the North Branch Potomac River Basin

15         Nutrients in the Upper Potomac River Basin

17         Upper Potomac River Basin Water Quality Assessment


                              VOLUME  3
                          Technical  Reports


19         Potomac-Piscataway Dye Release and Wastewater
           Assimilation Studies

21         LNEPLT

23         XYPLOT

25         PLOT3D


     * Formerly CB-SRBP, U.S. Department of Health, Education,
       and Welfare; CFS-FWPCA, and CTSL-FWQA,  Middle Atlantic
       Region, U.S. Department of the Interior

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                             VOLUME  3   (continued)

                         Technical Reports


27         Water Quality and Wastewater Loadings - Upper Potomac
           Estuary during 1969


                             VOLUME  4
                         Technical Reports


29         Step Backward Regression

31         Relative Contributions of Nutrients to the Potomac
           River Basin from Various Sources

33         Mathematical Model Studies of Water Quality in the
           Potomac Estuary

35         Water Resource - Water Supply Study of the Potomac
           Estuary

                             VOLUME 5
                         Technical Reports


37         Nutrient Transport and Dissolved Oxygen Budget
           Studies in the Potomac Estuary

39         Preliminary Analyses of the Wastewater and Assimilation
           Capacities of the Anacostia Tidal River System

41         Current Water Quality Conditions and Investigations
           in the Upper Potomac River Tidal System

43         Physical Data of the Potomac River Tidal System
           Including Mathematical Model Segmentation

45         Nutrient Management in the Potomac Estuary


                             VOLUME 6

                         Technical Reports


47         Chesapeake Bay Nutrient Input Study

49         Heavy Metals Analyses of  Bottom  Sediment in  the
           Potomac River Estuary

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                                  VOLUME  6  (continued)

                              Technical  Reports

     51          A System of Mathematical Models for Water Quality
                Management

     52         Numerical Method for Groundwater Hydraulics

     53         Upper Potomac Estuary Eutrophication Control
                Requirements

     54         AUT0-QUAL Modelling System

Supplement      AUT0-QUAL Modelling System:  Modification for
   to 54        Non-Point Source Loadings

                                  VOLUME  7
                              Technical Reports

     55         Water Quality Conditions in the Chesapeake Bay System

     56         Nutrient Enrichment and Control Requirements in the
                Upper Chesapeake Bay

     57         The Potomac River Estuary in the Washington
                Metropolitan Area - A History of its Water Quality
                Problems and their Solution

                                  VOLUME  8
                              Technical Reports

     58         Application of AUT0-QUAL Modelling System to the
                Patuxent River Basin

     59         Distribution of Metals in Baltimore Harbor Sediments

     60         Summary and Conclusions - Nutrient Transport and
                Accountability in the Lower Susquehanna River Basin

                                  VOLUME  9
                                 Data Reports

                Water Quality Survey, James River and Selected
                Tributaries - October 1969

                Water Quality Survey in the North Branch Potomac River
                between Cumberland and Luke, Maryland - August 1967

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                            VOLUME 9   (continued)

                           Data Reports


           Investigation of Water Quality in Chesapeake Bay and
           Tributaries at Aberdeen Proving Ground, Department
           of the Army, Aberdeen, Maryland - October-December 1967

           Biological Survey of the Upper Potomac River and
           Selected Tributaries - 1966-1968

           Water Quality Survey of the  Eastern Shore Chesapeake
           Bay, Wicomico River, Pocomoke River, Nanticoke River,
           Marshall Creek, Bunting Branch, and Chincoteague Bay -
           Summer 1967

           Head of Bay Study - Water Quality Survey of Northeast
           River, Elk River, C & D Canal, Bohemia River, Sassafras
           River and Upper Chesapeake Bay - Summer 1968 - Head ot
           Bay Tributaries

           Water Quality Survey of the  Potomac Estuary - 1967

           Water Quality Survey of the  Potomac Estuary - 1968

           Wastewater Treatment Plant Nutrient Survey - 1966-1967

           Cooperative Bacteriological  Study - Upper Chesapeake Bay
           Dredging Spoil Disposal - Cruise Report No. 11

                            VOLUME 10
                           Data Reports

 9         Water Quality Survey of the  Potomac Estuary - 1965-1966

10         Water Quality Survey of the  Annapolis Metro Area - 1967

11         Nutrient  Data on Sediment Samples of the Potomac Estuary
           1966-1968

12         1969  Head  of  the Bay Tributaries

13         Water Quality Survey of the  Chesapeake Bay in the
           Vicinity  of Sandy  Point - 1968

14         Water Quality Survey of the  Chesapeake Bay in the
           Vicinity  of Sandy  Point - 1969

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                             VOLUME IQ(continued)

                           Data Reports

15         Water Quality Survey of the Patuxent River - 1967

16         Water Quality Survey of the Patuxent River - 1968

17         Water Quality Survey of the Patuxent River - 1969

18         Water Quality of the Potomac Estuary Transects,
           Intensive and Southeast Water Laboratory Cooperative
           Study - 1969

19         Water Quality Survey of the Potomac Estuary Phosphate
           Tracer Study - 1969

                             VOLUME 11
                            Data Reports

20         Water Quality of the Potomac Estuary Transport Study
           1969-1970

21         Water Quality Survey of the Piscataway Creek Watershed
           1968-1970

22         Water Quality Survey of the Chesapeake Bay in the
           Vicinity of Sandy Point - 1970

23         Water Quality Survey of the Head of the Chesapeake Bay
           Maryland Tributaries - 1970-1971

24         Water Quality Survey of the Upper Chesapeake Bay
           1969-1971

25         Water Quality of the Potomac Estuary Consolidated
           Survey - 1970

26         Water Quality of the Potomac Estuary Dissolved Oxygen
           Budget Studies - 1970

27         Potomac Estuary Wastewater Treatment Plants Survey
           1970

28         Water Quality Survey of the Potomac Estuary Embayments
           and Transects - 1970

29         Water Quality of the Upper Potomac Estuary Enforcement
           Survey - 1970

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   30


   31


   32
   33
   34
Appendix
  to 1
Appendix
  to 2
    3


    4
                  VOLUME 11  (continued)
                 Data Reports

Water Quality of the Potomac Estuary - Gilbert Swamp
and Allen's Fresh and Gunston Cove - 1970

Survey Results of the Chesapeake Bay Input Study -
1969-1970

Upper Chesapeake Bay Water Quality Studies - Bush River,
Spesutie Narrows and Swan Creek, C & D Canal, Chester
River, Severn River, Gunpowder, Middle and Bird Rivers -
1968-1971

Special Water Quality Surveys of the Potomac River Basin
Anacostia Estuary, Wicomico.River, St. Clement and
Breton Bays, Occoquan Bay - 1970-1971

Water Quality Survey of the Patuxent River - 1970

                  VOLUME 12

               Working Documents

Biological Survey of the Susquehanna River and its
Tributaries between Danville, Pennsylvania and
Conowingo, Maryland

Tabulation of Bottom Organisms Observed at Sampling
Stations during the Biological Survey between Danville,
Pennsylvania and Conowingo, Maryland - November 1966

Biological Survey of the Susquehanna River and its
Tributaries between Cooperstown, New York and
Northumberland, Pennsylvnaia - January 1967

Tabulation of Bottom Organisms Observed at Sampling
Stations during the Biological Survey between Cooperstown,
New York and Northumberland, Pennsylvania - November 1966

                  VOLUME 13
               Working Documents

Water Quality and Pollution Control Study, Mine Drainage
Chesapeake Bay-Delaware River Basins - July 1967

Biological Survey of Rock Creek (from Rockville, Maryland
to  the  Potomac River)  October 1966

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                             VOLUME   13   (continued)

                          Working  Documents

 5         Summary of Water Quality  and  Waste  Outfalls,  Rock  Creek
           in Montgomery County, Maryland and  the  District of
           Columbia - December 1966

 6         Water Pollution Survey  -  Back River 1965 -  February  1967

 7         Efficiency Study of the District  of Columbia  Water
           Pollution Control  Plant - February  1967

                             VOLUME   14
                          Working Documents

 8         Water Quality and Pollution  Control  Study  -  Susquehanna
           River Basin from Northumberland to West  Pittson
           (Including the Lackawanna River Basin)   March  1967

 9         Water Quality and Pollution  Control  Study, Juniata
           River Basin - March 1967

10         Water Quality and Pollution  Control  Study, Rappahannock
           River Basin - March 1967

11         Water Quality and Pollution  Control  Study, Susquehanna
           River Basin from Lake Otsego,  New York,  to Lake  Lackawanna
           River Confluence, Pennsylvania - April 1967

                             VOLUME  15
                          Working Documents

12         Water Quality and Pollution Control  Study,  York  River
           Basin - April 1967

13         Water Quality and Pollution Control  Study,  West  Branch,
           Susquehanna River Basin - April  1967

14         Water Quality and Pollution Control  Study,  James River
           Basin - June 1967

15         Water Quality and Pollution Control  Study,  Patuxent River
           Basin - May 1967

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                             VOLUME 16

                          Working Documents

16         Water Quality and Pollution Control  Study,  Susquehanna
           River Basin from Northumberland, Pennsylvania,  to
           Havre de Grace, Maryland - July 1967

17         Water Quality and Pollution Control  Study,  Potomac
           River Basin - June 1967

18         Immediate Water Pollution Control  Needs,  Central  Western
           Shore of Chesapeake Bay Area (Magothy,  Severn,  South,  and
           West River Drainage Areas)  July 1967

19         Immediate Water Pollution Control  Needs,  Northwest
           Chesapeake Bay Area (Patapsco to Susquehanna Drainage
           Basins in Maryland) August 1967

20         Immediate Water Pollution Control  Needs - The Eastern
           Shore of Delaware, Maryland and Virginia  - September 1967

                             VOLUME 17
                           Working Documents

21         Biological Surveys of the Upper James River Basin
           Covington, Clifton Forge, Big Island, Lynchburg, and
           Piney River Areas - January 1968

22         Biological Survey of Antietam Creek and some of its
           Tributaries from Waynesboro, Pennsylvania to Antietam,
           Maryland - Potomac River Basin - February 1968

23         Biological Survey of the Monocacy River and Tributaries
           from Gettysburg, Pennsylvania, to Maryland Rt. 28 Bridge
           Potomac River Basin - January 1968

24         Water Quality Survey of Chesapeake Bay in the Vicinity of
           Annapolis, Maryland - Summer 1967

25         Mine Drainage Pollution of the North Branch of Potomac
           River - Interim Report - August 1968

26         Water Quality Survey in the Shenandoah River of the
           Potomac River Basin - June 1967

27         Water Quality Survey in the James and Maury Rivers
           Glasgow,  Virginia - September 1967

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                             VOLUME  17  (continued)

                           Working Documents

28         Selected Biological  Surveys in the James River Basin,
           Gillie Creek in the Richmond Area, Appomattox River
           in the Petersburg Area, Bailey Creek from Fort Lee
           to Hopewell - April  1968

                             VOLUME  18
                           Working Documents

29         Biological  Survey of the Upper and Middle Patuxent
           River and some of its Tributaries - from Maryland
           Route 97 Bridge near Roxbury Mills to the Maryland
           Route 4 Bridge near Wayson's Corner, Maryland -
           Chesapeake Drainage Basin - June 1968

30         Rock Creek Watershed - A Water Quality Study Report
           March 1969

31         The Patuxent River - Water Quality Management -
           Technical Evaluation - September 1969

                             VOLUME 19
                          Working Documents

           Tabulation, Community and Source Facility Water Data
           Maryland Portion, Chesapeake Drainage Area - October 1964

           Waste Disposal Practices at Federal  Installations
           Patuxent River Basin - October 1964

           Waste Disposal Practices at Federal  Installations
           Potomac River Basin below Washington, D.C.- November 1964

           Waste Disposal Practices at Federal  Installations
           Chesapeake Bay Area of Maryland Excluding Potomac
           and Patuxent River Basins - January 1965

           The Potomac Estuary - Statistics and Projections -
           February 1968

           Patuxent River - Cross Sections and Mass Travel
           Velocities - July 1968

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                            VOLUME  19 (continued)
                         Working Documents

          Wastewater Inventory - Potomac River Basin -
          December 1968

          Wastewater Inventory - Upper Potomac River Basin -
          October 1968

                            VOLUME 20
                         Technical Papers.

 1         A Digital Technique for Calculating and Plotting
          Dissolved Oxygen Deficits

 2         A River-Mile  Indexing System for Computer Application
          in Storing and Retrieving Data      (unavailable)

 3         Oxygen  Relationships in Streams, Methodology to be
          Applied when  Determining the Capacity of a Stream to
          Assimilate Organic Wastes - October 1964

 4         Estimating Diffusion Characteristics of Tidal Waters -
          May  1965

 5         Use  of  Rhodamine B Dye as a Tracer in Streams of the
          Susquehanna River Basin - April 1965

 6         An  In-Situ Benthic Respirometer - December 1965

 7         A Study of Tidal Dispersion in the Potomac River
          February  1966

 8         A Mathematical Model for the Potomac River - what it
          has  done  and  what it can do - December 1966

 9         A Discussion  and Tabulation of Diffusion Coefficients
          for  Tidal Waters Computed as a Function of Velocity
          February  1967

10         Evaluation of Coliform  Contribution by Pleasure Boats
          July 1966

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                            VOLUME  21
                         Technical Papers

11         A Steady State Segmented Estuary Model

12        Simulation of Chloride Concentrations in the
          Potomac Estuary - March 1968

13        Optimal Release Sequences for Water Quality
          Control in Multiple-Reservoir Systems - 1968

                            VOLUME  22
                         Technical  Papers

          Summary Report - Pollution of Back River -  January 1964

          Summary of Water Quality - Potomac River Basin in
          Maryland - October 1965

          The Role of Mathematical  Models in the Potomac River
          Basin Water Quality Management Program - December 1967

          Use of Mathematical Models as Aids to Decision Making
          in Water Quality Control  - February 1968

          Piscataway Creek Watershed - A Water Quality Study
          Report - August 1968

                            VOLUME  23
                        Ocean Dumping Surveys

          Environmental  Survey of an Interim Ocean Dumpsite,
          Middle Atlantic Bight - September 1973

          Environmental  Survey of Two Interim  Dumpsites,
          Middle Atlantic Bight - January 1974

          Environmental  Survey of Two Interim Dumpsites
          Middle Atlantic Bight - Supplemental Report -
          October 1974

          Effects of Ocean Disposal Activities on Mid-
          continental Shelf Environment off Delaware
          and Maryland - January 1975

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                            VOLUME 24

                           1976 Annual
               Current Nutrient Assessment - Upper Potomac Estuary
               Current Assessment Paper No.  1

               Evaluation of Western Branch Wastewater Treatment
               Plant Expansion - Phases I and  II

               Situation Report - Potomac River

               Sediment Studies in Back River  Estuary, Baltimore,
               Maryland

Technical      Distribution of Metals in Elizabeth River Sediments
Report 61

Technical      A Water Quality Modelling Study of the Delaware
Report 62      Estuary

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         Annapolis Field Office
                Region III
     Environmental  Protection Agency
                1969-1970

               Data Report

                Number 20
              WATER QUALITY

                 OF THE

             POTOMAC ESTUARY

            TRANSPORT SURVEY
                  Staff

James W. Marks, Chief, Laboratory Section
       Orterio Villa, Jr., Chemist
      Anna R. Favorite, Statistician
     Evelyn P. McPherson, Technician

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                      TABLE OF CONTENTS
                                                        Page
  I  INTRODUCTION	  ]_




 II  STATION LOCATIONS	  Q




III  SURVEY RESULTS	  9




 IV  MAP	appendix  i

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                        I INTRODUCTION




A.   Purpose and Scope



     In February, 1969, the Annapolis Field Office, Region




III, Environmental Protection Agency initiated a weekly




sampling program of the estuarine portion of the Potomac




River in cooperation with Steuart Petroleum Company.  The




purpose was to establish existing water quality conditions




and to determine variations in water quality over an annual




cycle.



B.   General Remarks




     Steuart Petroleum Company offered the use of an oil




barge making weekly runs up the Potomac River.  On the first




run from Piney Point to Haines Point a member of the Annap-




olis Field Office field crew was aboard the oil barge, "Papa




Guy", to collect the samples and instruct barge crew in




proper collection method.  AH subsequent samples were taken



by barge crew.  A total of fifty-two runs were made with



program being terminated in April, 1970.




C.   Sampling Procedures




     Surface samples for chemical analysis were obtained by




dipping a plastic bucket into the river water with a minimum




of agitation.  Temperature was measured immediately after




sampling.  Samples were retained in plastic one-quart con-

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tainers and stored on ice.  Analysis for nutrients as well



as chlorophyll a, total organic carbon, chlorides, and tur-




bidity was started as soon as received at Annapolis Field




Office.  A 160 ml prescription bottle was filled from the




quart cubitainer and stored for future metals analysis.




D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury




thermometer inserted into the sample container immediately




upon collection.




     2 .   Chlorides




          Reference:  Fisher Scientific Company, Bulletin
          The Chloride concentration was determined by titrat-




ing the sample with standard silver nitrate to a potentiometric




end point using a silver indicating electrode and a silver/




silver chloride reference electrode.




     3.   Total Phosphorus



          References:  Menzel, D.W. and Corwin, N. , 1965.  The



Measurement of Total Phosphorus in Seawater Based on the




Liberation of Organically Bound Fractions by Persulfate




Oxidation.  Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural

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Waters.  Analytica Chimica Acta, 2?:  31-36.




          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at 15> psi  for  30




minutes.  The resultant ortho-phosphate was then determined




colorijnetrically as the molybdenum-blue complex with the




optical density measured at  882 mM-.




     i;.   Total Phosphorus,  millipore filtered  (Dissolved)




          References:  Menzel, D.W.  and Corwin, N., 1965.   The




Measurement of Total Phosphorus in Seawater Based  on the Lib-




eration of Organically Bound Fractions by Persulfate Oxidation.




Limonology and Oceanography, 10:  280-282




          Murphy, J., and Riley,  J.P., 1962.  A Modified Single



Solution Method for the Determination of Phosphate in  Natural




Waters.  Analytica Chimica Acta,  21:  31-36.




          The sample as received was filtered through  a Type




HA millipore filter.  The Total millipore filtered Phosphorus




was then determined after persulfate oxidation of  the  sample



in an  autoclave at 15> psi for 30 minutes.  The resultant ortho-



phosphate was then determined colorinetrically as  the  molyb-




denum-blue complex with the  optical  density measured at 882  mH.



     5.   Inorganic Phosphorus




          Reference:  Murphy, J.  and Riley, J.P.,  1962. A




Modified Single Solution Method for  the Determination  of Phos-




phate  in Natural Waters.  Analytica  Chimica Acta,  2?:   31-36.

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          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-




rically with the optical density measured at 885 mM-.




     6.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Total Kjeldahl Nitrogen includes ammonia and organ-




ic nitrogen and was determined by the standard micro-kjeldahl




procedure.  The sample was digested in the presence of strong




acid to convert the organic nitrogen to ammonia.  The ammonia




was then distilled, collected in boric acid solution, nessler-




ized and determined colorimetrically.




     7.   Total Kjeldahl Nitrogen, millipore filtered (Dissolved)




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          The sample as received was filtered through a Type



HA millipore filter.  Total millipore filtered Kjeldahl



Nitrogen includes ammonia and organic nitrogen and was de-



termined by the standard micro-kjeldahl procedure.  The



sample was digested in the presence of strong acid to con-




vert the organic nitrogen to ammonia.  The ammonia was then




distilled, collected in boric acid solution, nesslerized and




determined colorimetrically.

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     8.   Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water Analysis,




J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries




Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined by




automation of the above procedure using the Technicon "Auto




Analyzer."  This procedure utilizes cadmium reduction of




nitrate to nitrite and subsequent diazotization with sulfan-




ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride with




the optical density measured at 5>^0 mM-.  The results were re-




ported  as nitrogen.



     9.   Ammonia




          References:  Southeast Water Laboratory, FWQA,




Methodology for the colorimetric determination of ammonia




by the phenol-hypochlorite reaction.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969.



          Ammonia nitrogen was determined by automation of



the phenol-hypochlorite procedure as described in the South-




east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the indophenol




blue color, formed by the reaction of ammonia with alkaline




phenol-hypochlorite, was increased using sodium nitroprusside

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as an intensifying agent.  The optical density was measured



at 630 mP- and calculated as NHj-N.




     10.  Chlorophyll a




          Reference:  A Practical Handbook of Seawater Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 167,




Fisheries Research Board of Canada, Ottawa, Canada, 1968.




          Chlorophyll a was determined by extraction  of




millipore filtered samples in 90$ acetone and read spectro-




photometrically.




     11.  Total Organic Carbon




          Reference:  FWPCA Methods for Chemical Analysis of




Water and Wastes, November 1969.




          Total Organic Carbon was determined with a  Dow-




Beckman Carbonaceous Analyser after the sample had been



purged with nitrogen gas for five minutes.




     12.  Total Organic Carbon, millipore filtered  (Dissolved)



          Reference:  FWPCA Methods for Chemical Analysis of



Water and Wastes, November 1969.




          The sample as received was filtered through a  Type




HA millipore filter .1(5 M-.  Total Millipore filtered  Organic



Carbon was determined with a Dow-Beckman Carbonaceous Anal-




yser after the sample had been purged with nitrogen gas  for




five minutes.

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     13.  Turbidity




          Reference:  FWPCA Methods for Chemical Analysis  of




Water and Wastes, November 1969.




          Turbidity was determined with a Hach photoelectric




nephelometer, calibrated in Jackson Turbidity Units.




     ll;.  Metals




          Reference:  EPA Methods for Chemical Analysis of




Water and Wastes, 1971.



          Metals in solution were determined by atomic ab-




sorption spectroscopy.

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                    II STATION LOCATIONS






Station	Location	___^




  3                        Haines Point, C "11"



  5                        Woodrow Wilson Bridge, at bridge




  6                        Broad Creek, N "86"




  7                        Piscataway Creek, Fl  "7?"




  8                        Dogue Creek, PI "67"




  9                        Hallowing Point, C "6l"




 10                        Indian Head, N "$k"



 11                        Possum Point, Fl R "UU"




 12                        Sandy Point, N V




 13                        Smith Point, N "30"




 Ik                        Maryland Point, Fl "21"




 15                        Nanjemoy Creek, N "10"




 16                        Potomac River Route 301 Bridge




 19                        Wicomico Creek, C "l£"



 20                        Kingcopisco Point, BWN "52" B



 22                        Piney Point, FR "D" Steuart

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                    Ill  SURVEY RESULTS

                         1969-1970
         POTOMAC ESTUARY TRANSPORT METALS ANALYSIS
                  ANNAPOLIS FIELD OFFICE
  Sample                  Zinc                     Copper
  Number	        mg/1	mg/1
              Station 3 - Haines Point, C "11"
69021816                  .031                    x  ND
    26l6                  .016                      ND
  030516                  .002                      ND
    1232                  .879
    1816                  .888
    2537                  .013
  OU0216                  .091
    0816                  .1301
    2116                  .01+22
    2916                  .0629
  050690                  .31*32
    1316                  .2226
    2116                  .0711;
    2716                  .2533                     ND
  060522                  .1336                     ND
    1016                  .0856                     ND
    1716                  .1555
  070135                  -22U6
    0916                  .0629
    1532                  .2380
    2516                  .12U8
    3121                  .0353
  080532                  .190U
    1226                  .2iil8
    2616                  .0837
  090U16                  .0507
    1016                  .U357
    1616                  .0271
    2316                  .0209
  100116                  .5193
    0716                  .0191
    2816                  .0812                     ND
  111316                     ND                     ND
    1976                  .1053                     ND
  120216                  .1U68

 ND Not detectable

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                                                           10
  SampleZincCopper
  Number	mg/1	mg/1
        Station 3 - Haines Point, C "11" -continued
69121016                  .0257
    2216                  .0818
    2916                  .0833
70010716                  .3U9?
    Ilil6                  .2609
    2016                  .072
    2716                  .032
  020316                  .076
    0516                  .779
    1116                  .557
  030916                  .016

             Station 5 - W Bridge, At Bridge
69021815                  .028                      ND
    2615                  .050                      ND
  030515                  .02^                      ND
    1231                  .08U
    1815                  .268
    2536                  .Ol|2
  0^0215                  .061
    0815                  .late
    2115                  .0526
    2915                  .1282
  050689                  .2322
    1315                  .066U
    2115                  .071U
    2715                  .0526                     ND
  060521                  .1121                     ND
    1015                  .0856                     ND
    1715                  .1355
  070131*                  .0979
    0915                  .066U
    1531                  .2967
    2515                  .0526
    3120                  .0253
  080531                  .0802
    1225                  .1389
    2615                  .llUo
  090la5                  .0253
    1015                  .0768
    1615                  .0257
    2315                     ND

  ND Not detectable

-------

-------
                                                         11
Sample
Number
Station 5 - WW
69100115
0715
2815
111315
1975
120215
1015
2215
2915
70010715
ii+15
2015
2715
020315
0515
ni5
21+27
030915
Station
6902181U
261k
0305ll|
1230
1811;
2535
Qk02lk
08lli
2111;
2911;
050688
131k
2111;
271k
060520
ioiU
17 lU
070133
091U
1530
251U
3119
Zinc
me/1
Bridee, At Bridge -continued
.1160
ND
.0569
.Olli3
.1226
.1820
.i486
.0583
.0301;
.6818
.2128
.048
.035
.091
.442
.115
ND
.016
6 - Broad CK, N "86"
.029
.033
.005
.090
.150
.Ok2
.OUl
.1481
.0506
.0733
.4034
.Oi;22
.0711;
.051;!
.0871
.16^7
.1355
.0134
.0661;
.1370
• OU57
ND
Copper
me/1



ND
ND
ND














ND
ND
ND










ND
ND
ND






ND Not detectable

-------
                                                         12
Sample
Number

69080530
1221;
2611;
090l|lU
1011;
1611;
231U
100111;
071U
2811;
111311;
1971;
120211;
lOlli
2911;
70010711;
2011;
2711;
020311;
0511;
llll;
2^26
030911;

69021813
2613
030513
1229
1813
253U
Olj.0213
0813
2113
2913
050687
1313
2113
2713
060519
1013
1713
Zinc
me/1
Station 6 - Broad CK, N "86" -continued
.OU91
.0787
LA
.0253
.0890
.0176
.0290
.01U3
.0081
.0569
.0191
.Ol;0l;
.1695
.0583
.0517
.7061;
.060
.037
.125
,lli7
.029
.021
.Oil;
Station 7 - Piscataway Creek, FL "77"
.021;
.052
0
.232
.111;
.028
.162
.2322
.05U1
.2l;l8
.2207
.1086
• OliS7
.1013
.32ii7
.ll;62
.1013
Copper
mg/1










ND
ND
ND












ND
ND
ND










ND
ND
ND

LA Lab accident
ND Not detectable

-------

-------
                                                             13
  SampleZincCopper
  Number	mg/1     	    mg/1
      Station 7  -  Fiscataway Creek, FL "77" -continued
69070132                   .0871
    0913                   .0979
    1529                   .091+1+
    2^13                   .01+07
    3118                   .0181;
  080529                   .061;5
    1223                   .01+07
    2613                   .061+5
  0901+13                   .0353
    1013                   .0821
    1613                   .0338
    2313                   .0323
  100113                   .0616
    0713                   .0081
    2813                   .0371                      ND
  111313                   .0257                      ND
    1973                   .0257                      ND
  120213                   .0602
    1013                   .011+3
    2913                   .01+01+
70010713                   .5816
    11+13                   .1+605
    2013                   .01+0
    2713                   .016
  020313                   .11+7
    0513                   .081+
    1113                   .076
    21+25                   .016
  030913                   .011+

               Station 8 - Dogue CK, FL  "67"
69021812                   .020                       ND
    2612                   .039                       ND
  030512                   .021+                       ND
    1228                  0
    1812                   .261+
    2533                   .126
  01+0212                   .153
    0812                   .191+2
    2112                   .051+1
    2912                   .0786
  050686                   .1033

  ND Not detectable

-------
                                                            Ill
  SampleZincCopper
  Number	mg/1 	  	mg/1
          Station 8 - Dogue  GK  FL "67" -continued
690^1312                   .099U
    2112                   .1107
    2712                   .061+5                      ND
  060518                   .2652                      ND
    1012                   .0890                      ND
    1712                   .12U8
  070131                   .0837
    0912                   .0802
    1528                   .1628
    2512                   .0338
    3117                   .0372
  080528                   .0610
    1222                   .0^72
    2612                   .051+1
  0901+12                   .0219
    1012                   .05U1
    1612                   .0128
    2312                   .0338
  100112                   .0701
    0712                   .0323
    2812                   .0323                      ND
  111312                   .0330                      ND
    1972                   .0389                      ND
  120212                   .1053
    1012                   .0161
    2912                   .0371
70010712                   .2073
    11+12                   .0785
    2012                   .01+0
    2712                   .Ola
  020312                   .ioi+
    0512                   .128
    1112                   .1+80
    21+21+                   .021
  030912                   .011

             Station 9  -  Hallowing FT., C "61"
69021811                   .020                      ND
    2611                   .01+6                      ND
  030511                   .013                      ND
    1227                   .021+
    1811                   .007

  ND Not detectable

-------

-------
                                                            15
  Sample                  Zinc                       Copper
  Number	 mg/1	   	mg/1
       Station 9 - Hallowing FT., C  "6l" -continued
69032532                   .031
  OU0211                   .093
    0811                   .1666
    2111                   .1032
    2911                   .1032
  050685                   .2302
    1311                   .099U
    2111                   .06U5
    2711                   ,06I;5                      ND
  060517                   .1317                      ND
    1011                   .1209                      ND
    1711                   .0837
  070130                   .1067
    0911                   .0560
    1527                   .0979
    2511                   .0303
    3116                   .0065
  080527                   .013U
    1221                   .0353
    2611                   .2986
  090i;ll                   .0353
    1011                   .0595
    1611                   .0176
    2311                   .06ii?
  100111                   .0517
    0711                   .0338
    2811                   .0371                      ND
  3.11311                   .0257                      ND
    1971                   .0616                      ND
  120211                   .02^2
    1011                   .OOU8
    2911                   .0371
70010711                   .3281
    llill                   .2293
    2011                   .032
    2711                   .068
  020311                   .070
    0511                   .11*6
    1111                   .06h
    21*23                   .0^0
  030911                   .017

  ND Not detectable

-------

-------
                                                        16
Sample
Number

69021810
2610
030510
1226
1810
2531
OU0210
0810
2110
2910
05068U
1310
2110
2710
060516
1010
1710
070129
0910
1526
2^10
3115
080526
1220
2610
090l|10
1010
1610
2310
100110
0710
2810
111310
1970
120210
1010
2910
70010710
1U10
2010
2710
Zinc
mg/1
Station 10 - Indian Head, N "5k"
.035
.067
.013
.093
.oia
.031
.150
0
.0506
.091^
.1271
.0507
.OU57
.051A
.0629
.0768
.3370
.0560
.0526
.0253
.0169
.0319
.0081;
.0526
.0560
.0353
.0388
.0161
.0128
.0767
.OllU
.0290
ND
.021*2
.02lj.2
.oiiU
.0290
.2312
.1071
.06k
.037
Copper
mg/1

ND
ND
ND










ND
ND
ND















ND
ND
ND







ND  Not detectable

-------

-------
                                                          17
Sample
Number
Station 10 -
70020310
0^10
1110
2lj.22
030910
Station
69021809
2609
030509
1225
1809
2530
0^0209
0809
2109
2909
050683
1309
2109
2709
060515
1009
1709
070128
0909
1525
2509
311U
080525
1219
2609
090^09
1009
1609
2309
100109
0709
2809
111309
1969
Zinc
mg/1
Indian Head, N "5V -continued
.055
.071
.051
• 035
.017
11 - Possum FT., FL fi "UU"
.031
.101
.007
.015
0
.015
.101
.1120
.0595
• o5Ui
.0679
.0372
ND
.0560
.OU57
.0150
.OU38
.0768
.01*91
.0388
.0169
.0081;
.0100
.0015
LA
.018U
.0119
.0011;
.0062
.Oli;7
ND
.0176
ND
.0161
Copper
mg/1







ND
ND
ND










ND
ND
ND















ND
ND
ND
LA Lab accident
ND Not detectable

-------

-------
                                                          18
SampleZincCopper
Number	mg/1	mg/1
Station 11 - Possum
69120209
1009
2909
70010709
11*09
2009
2709
020309
0509
1109
21*21
030909
Station 12 -
69021808
2608
030508
1221;
1808
2529
0^0208
0808
2108
2908
050682
1308
2108
2708
060511;
1008
1708
070127
0908
1521;
2508
3113
080521;
1218
2608
090l;08
1008
1608
PT., FL R "W -c<
0800
Oll*3
0356
271;!
3655
oia
01*7
ND
037
111
025
016
Sandy PT.A N "40"
038
091
015
037
021;
007
029
061*5
5827
0353
0679
0131;
0169
0269
1370
0231;
0560
0130
Ol;72
0388
0150
ND
0169
0065
0219
0181;
0119
0033
                                        -continued
                                                  ND
                                                  ND
                                                  ND
                                                  ND
                                                  ND
ND Not detectable

-------

-------
                                                         19
Sample
Number

69092308
100108
0708
2808
111308
1968
120208
1008
2208
2908
70010708
1U08
2008
2708
020308
0508
1108
2i;20
030908

69021807
2607
030507
1223
1807
2528
OU0207
0807
2107
2907
050681
1307
2107
2707
060513
1007
1707
070126
0907
1523
2507
Zinc
mg/1
Station 12 - Sandjr PT., N "ij.0" -continued
.0176
.0190
ND
.Ollt3
ND
.0161
,022k
.0818
.Oi;59
.0271
.30^6
.0635
.153
.030
.oia
.037
.110
ND
.013
Station 13 - Smith FT., N "30"
.038
.095
0
.018
.039
.009
.072
.1032
.0338
.0353
.0679
.0219
.0711;
.0281*
.0576
.0679
.0560
.0821
.OU07
.0388
.0119
Copper
me/1




ND
ND
ND














ND
ND
ND










ND
ND
ND





ND Not detectable

-------

-------
                                                         20
Sample
Number

69073112
080523
1217
2607
090l;07
1007
1607
2307
100107
0707
2807
111307
1967
120207
1007
2207
2907
70010707
11*07
2007
2707
020307
0507
1107
2l;19
030907

69021806
2606
030506
1222
1806
2527
0^0206
0806
2106
2906
050680
1306
2106
Zinc
rag/1
Station 13 - Smith PT., N "30" -continued
ND
.0231;
.0081;
.0219
.0181;
.0253
.0033
.0111;
.0111;
.0033
.0062
ND
.0161
.0371
.0271
.OU70
.0161
.1912
.okok
• 1U9
.050
.061;
.Ol;5
.128
.003
.030
Station ll; - Maryland PT., FL "21"
.038
.099
.033
.061
.OU2
.031
.063
.0372
.033$
.0253
.0507
.0303
.0253
Copper
me/1











ND
ND
ND














ND
ND
ND










ND Not detectable

-------

-------
                                                         21
Sanple
Number
Station
69052706
060512
1006
1706
070125
0906
1522
2506
3111
080522
1216
2606
090^06
1006
1606
2306
100106
0706
2806
111306
1966
120206
1006
2206
2906
70010706
1U06
2006
2706
020306
0506
1106
2U18
030906
c
69021805
2605
030505
1221
1805
Zinc
mg/1
Ik - Maryland PT. , FL "21"
.QUO?

.0595
.0661;
.0821
.0871
.06U5
.0131;
ND
.0281;
.0100
.0372
.0303
.0119
.0015
ND
.0095
ND
.0176
ND
.0161
.0356
.0095
.0257
.0191
.21*77
.0191
.021;
.083
.OU8
.030
.Oil;
.Oil;
.027
Station 15 - Nanj emoy CK, N
.01;2
.119
.029
.156
.Olt2
Copper
mg/1
-continued
ND
ND
ND



„











ND
ND
ND













"10"
ND
ND
ND


ND Not detectable

-------

-------
                                                            22
  Sample                  Zinc                      Copper
  Number	mg/1
        Station 15 - Nan.lemoy CK, N  "10" -continued
69032526                   .022
  01^0205                   .Ola
    080^                   .1301
    2105                   .0338
    2905                   .013U
  050679                   .161|7
    1305                   .0303
    2105                   .0733
    2705                   .0200                      ND
  060511                   .01*72                      ND
    1005                   .0595                      ND
    1705                     ND
  07012U                   .0802
    0905                   .1209
    1521                   .061;5
    2505                   .0150
    3110                     ND
  080521                   .0526
    1215                   .0119
    2605                   .0372
  090lj.05                   .0169
    1005                   .0119
    1605                   .oU5i
    2305                     ND
  100105                   .oiU3
    0705                   .0095
    2805                   .0517                      ND
  111305                   .0209                      ND
    1965                   .0969                      ND
  120205                   .0833
    1005                   .0257
    2205                   .0209
    2905                   .0356
70010705                   .0851
    Ili05                   .02U2
    2005                   .oU8
    2705                   .168
  020305                   .101
    0505
    1105
    2la7                   .013
  030905

  ND Not detectable

-------

-------
                                                         23
Sample
Number_

69021801;
2601;
03050k
1220
1801;
2525
Ol;020l;
0801;
2101;
2901;
0^0678
130U
2101;
2701;
060510
1001;
1704
070123
0901;
1520
2501;
3109
080520
1211;
2601;
090l;0l;
1004
1601;
2301;
100104
0701;
2801;
111301;
1961;
121001;
2201;
2901;
70010701;
lUOU
2001;
2701;
Zinc
mg/1
Station 16 - Potomac Bridge, 301 Bridge
.oia
.119
.097
.178
.OU6
.022
•313
.0253
.0338
.0338
.Oll;9
.0338
.1033
.0200

.llliO
.0200
.1191;
.0253
.0661;
.0131;
.0081;
.0699
.0169
.1036
.0200
.0576
.2110
ND
.0128
.0503
.1020
.0176
.0271
.0161
.0371
.0682
.2257
.0550
.470
.181;
Copper
mg/1

ND
ND
.111;










ND
ND
ND















ND
ND
ND







ND Not detectable

-------

-------
                                                           21*
Sample
Number
Station 16 - Potomac
70020301*
0501*
HOli
21*16
030901;
Station 19 -
69021803
2603
030503
1219
1803
2521*
01*0203
0803
2103
2903
050677
1303
2103
2703
060509
1003
1703
070122
0903
1519
2503
3108
080519
1213
2603
0901*03
1003
1603
2303
100103
0703
2803
111303
1963
Zinc
mR/1
Bridge, 301 Bridge
.076
.008
.039
.058
.086
Wicomico Creek, C
.01*2
.013
.oik
.090
0
.051
.375
.0253
.0338
.0338
.01*38
.0629
.09UU
.0200
.0253
.1390
.0119
.0507
.0253
.0661*
.0181*
.0081*
.099U
.0979
.1036
.0081*
.0661*
.1365
ND
.0271
.0191
.1893
.011*3
.0389
Copper
mg/1
-continued





"15"
ND
ND
.072










ND
ND
.111*















ND
ND
ND
ND Not detectable

-------

-------
                                                            25
  Sample                  Zinc                      Copper
  Number	mg/1	mg/1
       Station 19 - Wicomico Creek, C "15" -continued
69120203                  .06k9
    1003                  .0517
    2203                  .ll|31
    2903                  .073U
70010703                  .1U68
    1U03                  .1732
    2003                  .206
    2703                  -3U3
  020303                  .olii
    0503                  .021;
    1103                     ND
    21^5                  .058
  030903                  .063
Station 20 -
69021802
2602
030502
1218
1802
2523
Oit0202
0802
2102
2902
050676
1302
2102
2702
060508
1002
1702
070121
0902
1518
2502
3107
080518
1212
2602
090k02
Kingcopisco Point BWN "52" B
.121
.101
.061
.107
.028
0
1.212
.0679
.01+22
.0219
.0856
.Ol|22
.0768
.0269
.01+72
.1666
.0814;
.05U
.01+07
.0733
.0389
.0169
.2867
.3005
.1013
.0150

ND
ND
.072










ND
ND
.111;










  ND Not detectable

-------

-------
                                                         26
Sample
Number
Station
69091002
1602
2302
100102
0702
2802
111302
1962
120202
1002
2202
2902
70010702
ll|02
2002
2702
020302
0502
1102
2klk
030902

69021801
2601
030501
1217
1801
2522
0^0201
0801
2101
2901
050675
1301
2101
2701
060507
1001
1701
070120
0901
Zinc
raE/1
20 - Kingcopisco Point BWN
.0733
.1295
.0015
.Olllt
.073U
.1857
.Ollii
.Oi±70
.Oi;37
.02U2
.1259
.0583
.2165
.0903
.115
.628
.320
.028
.088
.120
.283
Station 22 - Piney Point FR
.103
.119
.870
.618
.039
.128
.715
.0303
o0595
.1535
.0388
.0925
.0269
.0303
.0319
.205U
.0629
.0253
.023U
Copper
mg/1
"52" B -continued





.218
ND
ND













"D" Steuart
.268
ND
.187










.235
.280
.158



ND Not detectable

-------

-------
                                                             27
  Sample                   Zinc                      Copper
  Number	216/1	mg/1
    Station 22  - Finey Point FR "D" Steuart -continued
69071^17ToISH
    2501                   .0119
    3106                   .0169
  080^17                   .061;5
    1211                   .2207
    2601                   .29l|8
  090^01                   .0119
    1001                   .Ol;57
    1601                   .2661;
    2301                   .0062
  100101                   .0271
    0701                   .0221;
  111301                   .0111;                      .ll;2
    1961                   .0257                      .158
  120237                   .0731;
    1001                   .0221;
    2201                   .1711;
    2901                   .0569
70010701                   .121;!;
    11*01                   .1662
    2001                   .137
    2701                  1.016
  020301                   .365
    0501                   .098
    1101                   .088
    2U13                   .033
  030901                   .7^0
  ND Not detectable

-------

-------































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A/
                                             LOCATION MAD
                                     IGCOPI5CO POINT . BWN 52 8 — 30
                                        POINT FR D STEUART— 22
                      1969-1970
                      SCAU N MIES
            POTOMAC    ESTUARY

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         Annapolis Field Office
               Region III
     Environmental Protection Agency
       1968-1969-1970 Data Report


                Number 21
          WATER QUALITY SURVEY

                 OF THE

       PISCATAWAY CREEK WATERSHED
                 Staff:

James W. Marks, Chief, Laboratory Section
       Orterio Villa, Jr., Chemist
     Anna R. Favorite, Statistician
     Evelyn P. McPherson, Technician

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                      TABLE OF CONTENTS
                                                         Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  8




III  SURVEY RESULTS	  9




 IV  MAP	appendix  i

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                       I INTRODUCTION




A.   Purpose and Scope




     During 1968, 1969 and 1970, water quality studies were




undertaken by the Annapolis Field Office, Environmental Pro-




tection Agency in the Piscataway Creek Watershed.  Purpose




of these surveys were to:




     1.   Determine the efficiency of the Piscataway waste-




water treatment facility.




     2.   Investigate the effect of the wastewater effluent




on the water quality in Piscataway Creek.




     3.   Study alternative discharge points for the ef-




fluent from the Piscataway Sewage Treatment Plant.




     k-   Establish a water quality baseline which can be




used to evaluate the effects of wastewater discharges on the




eutrophication process in receiving waters.




B.   General Remarks




     Intensive field investigations, sampling surveys, and




data analyses have been conducted to determine the conditions




in the Piscataway Creek.  The assistance and cooperation of




the Washington Suburban Sanitary Commission and the Maryland




State Department of Health was greatly appreciated.




C.   Sampling Procedures




     Samples were obtained by dipping a plastic container full




of the stream water.  A gallon cubitainer was then filled from

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the dipped sample.  Dissolved oxygen (DO) samples were si-




phoned from the dipped sample into a conventional 300 ml DO




bottle.  The sample was allowed to overflow the bottle sev-




eral times without excessive agitation and the DO fixed im-




mediately.  Bacteriological samples were taken from surface




waters directly into a sterile 160 ml prescription bottle.




All samples were stored on ice.  Analyses were started im-




mediately on return to the Annapolis Field Office, generally




within two hours of sampling.




D.   Measured Parameters and Analytical Methods




     1.   "Water temperature was determined using a mercury




thermometer inserted into the sample container immediately




upon collection.




     2.   Light extinction, in inches, was made with a 12"




(30 cm) white secchi disk.




     3.   Total Phosphorus




          References:  Menzel, D.W. and Corwin, N., 1965.  The




Measurement of Total Phosphorus in Seawater Based on the Lib-




eration of Organically Bound Fractions by Persulfate Oxidation.




Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chimica Acta, 21:  31-36.




          Total Phosphorus was determined after persulfate

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                                                             3





oxidation of the sample in an autoclave at l£ psi for 30




minutes.  The resultant ortho-phosphate was then determined




colorimetrically as the molybdenum-blue complex with the




optical density measured at 882 mM-.




     k-   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley, J.P., 1962.  A




Modified Single Solution Method for the Determination of




Phosphate in Natural Waters.  Analytica Chiniica Acta, 27'




31-36.




          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-




rically with the optical density measured at 885 mH.




     5.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965-




          Total Kjeldahl Nitrogen includes ammonia and organ-




ic nitrogen and was determined  by the standard micro-kjeldahl




procedure.  The sample was digested in the presence of strong




acid to convert the organic nitrogen to ammonia.  The ammonia




was then distilled, collected in boric acid solution, nessler-




ized and determined colorimetrically.




     6.   Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water Analysis,

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                                                             k
J.D.H. Strickland and T.R. Parsons, Bulletin 167, Fisheries


Research Board of Canada, Ottawa, Canada, 1968.


          Nitrate plus nitrite nitrogen was determined by

automation of the above procedure using the Technicon  "Auto


Analyzer."  This procedure utilizes cadmium reduction  of

nitrate to nitrite and subsequent diazotization with sulfan-


ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride with

the optical density measured at $i;0 mi-J-.   The results were re-


ported as nitrogen.


     7.   Ammonia


          References:  Southeast Water Laboratory,  FWQA,

Methodology for the colorimetric determination of ammonia


by the phenol-hypochlorite reaction.


          FWPCA Methods for Chemical Analysis of Water and


Wastes, November 1969-

          Ammonia nitrogen was determined by automation of


the phenol-hypochlorite procedure as described in the  South-

east Water Laboratory Methodology and later adopted as the

official FWPCA procedure.  The intensity  of the indophenol

blue color, formed by the reaction of ammonia with  alkaline

phenol-hypochlorite, was increased using  sodium nitroprusside

as an intensifying agent.  The optical density was  measured

at 630 mM- and calculated as NH -N.


     8.   Chlorophyll a


          Reference:  A Practical Handbook of Seawater Analysis,

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J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries




Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a was determined by extraction of milli-




pore filtered samples in 90f° acetone and read spectrophoto-




metrically.




     9.   Turbidity




          Reference:  FWPCA Methods for Chemical Analysis of  •




Water and Wastes, November 1969.




          Turbidity was determined with a Hach photoelectric




nephelometer, calibrated in Jackson Turbidity Units.




     10.  Dissolved Oxygen




          Reference:  FWPCA Methods for Chemical Analysis of




Water and Wastes, November 1969.




          Dissolved Oxygen was determined by the azide modi-




fication of the basic Winkler Method with the titration done




potentiometrically with a Fisher automatic "titralyzer."




     11.  Biochemical Oxygen Demand




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          The Biochemical Oxygen Demand was determined by the




azide modification of the basic Winkler method with the titra-




tion done potentiometrically with a Fisher automatic "titraly-




zer."  The samples as received were diluted if necessary and




transferred to standard 300 ml BOD bottles in triplicate.  One

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initial DO and two final DO determinations were used throughout.




Incubation was started immediately at 208C and continued for




five days after which they were titrated.




     12.  Total Organic Carbon




          Reference:  FWPCA Methods for Chemical Analysis  of




Water and Wastes, November 1969.




          Total Organic Carbon was determined with a Dow-Beckman




Carbonaceous Analyzer after the sample had been purged with




nitrogen gas for five minutes.




     13.  Coliform




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Coliform population was determined using the 5 tube-




3 dilution Multiple-Tube Fermentation Technique.  Lauryl sul-




fate tryptose broth was used for the presumptive test with in-




cubation at 350±0.5°C.  Brilliant green lactose bile broth was




used for the confirmatory test with incubation at 35eit0.5>eC.




The results were reported as the Most Probable Number (MPN).




     liu  Fecal Coliform




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Water Pollution Control Research Series, WP-20-3.




          Fecal Coliform population was determined using the




5 tube-3 dilution Multiple-Tube Fermentation Technique.

-------

-------
                                                             7
Lauryl sulfate tryptose broth was used for  the presumptive




test with incubation at 35>'±0.!;>''C.  EC medium was  used  for




the confirmatory test with air incubation at l^.^^Q.^C.




The results were reported as the Most Probable Number  (MPN).

-------

-------
                  II STATION LOCATIONS
Station                 Location
PO         Indianhead Highway Bridge - Rt. 210




Pi         Pumping station - Above discharge




P2         First bend - Above discharge




?3         Near white barrels next to first home




P3A        On Tributary - Opposite plant near posts in  channel




P3B        On Tributary - Opposite Plant near channel to road




?3C        Near end of cattails in opposite Tributary




P3D        In marsh - First Tributary to right




PI;         Farmington Lodge Point in Bay




P5         In Bay - Out from marina




P6         Off Point - Below marina in channel




P?         Mid-Bay - Off first two channel markers




P8         Confluence with Potomac mid-channel at markers




P9         Off monitor station buoy - Potomac River




PlO        Buoy 76 in Potomac River




           Fort Washington




           Piscataway STP

-------

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                         WATER QUALITY SURVEY

                                OF  THE

                            CHESAPEAKE BAY

                          IN THE VICINITY OF

                              SANDY POINT

                                 1970

                             DATA REPORT

                              Number 22
    Annapolis  Field Office
           Region III
Environmental Protection Agency

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                  Annapolis  Field Office
                        Region III
             Environmental Protection Agency
                     1970 Data Report


                        Number 22
                   WATER QUALITY SURVEY

                          OF THE

                      CHESAPEAKE BAY

                    IN THE VICINITY OF

                       SANDY POINT
                          Staff:

   James W. Marks,  Chief,  Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna  R.  Favorite, Statistician
             Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                    Page



  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  7




III  SURVEY RESULTS	  8




 IV  MAP	appendix  i

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                       I INTRODUCTION




A.   Purpose and Scope




     Water quality observations were continued by the Annapolis




Field Office, Region III, Environmental Protection Agency, in




the general vicinity of Sandy Point throughout 1970.




     Objectives of these studies were to:




     1.   Determine the extent and duration of oxygen deple-




     tion during the summer months.




     2.   Continue verification of horizontal and vertical




     stratification through thermoclines and haloclines.




     3.   Assess trends in existing water quality in terms of




     nutrients, salinity, chlorophyll, and bacterial count.




B.   General Remarks




     Throughout the year, monthly sampling cruises were made




on eight transects from a northern section across the mouth




of the Patapsco River to the southernmost section across the




mouth of the Severn River.




C.   Sampling Procedures




     Samples were obtained using a small submersible pump at-




tached to a wire cable calibrated in feet.  The pump was low-




ered to the desired depth and allowed to run for two minutes



before receiving samples in plastic containers.  Dissolved




oxygen (DO) samples were obtained directly from the pump out-




let extending to the bottom of a conventional 300 ml DO bottle.

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The sample was allowed to overflow the bottle several times




and then fixed immediately.




     Bacteriological samples were taken from surface waters




directly into a sterile 160 ml prescription bottle.




     All samples were immediately stored on ice and analyses




started upon return to the laboratory, generally within two




hours of sampling.




D.   Measured Parameters and Analytical Methods




     1.   Water temperature was read from a Beckman Salinometer.




     2.   Light extinction, in inches, was read with a 12"




(30 cm) white secchi disk.




     3.   Salinity was determined with a calibrated Beckman




Salinometer.




     It.   Conductivity was read from a calibrated Beckman




Salinometer.




     5-   Dissolved Oxygen




          Reference:  FWPCA Methods for Chemical Analysis of



Water and Wastes, November 196°.




          Dissolved Oxygen was determined by the azide modi-



fication of the basic Winkler method with the titration done



potentiometrically with a Fisher automatic "titralyzer."




     6.   Total Phosphorus




          Reference:  Menzel, D.W. and Corwin, N., 1965>.  The




Measurement of Total Phosphorus in Seawater Based on the Liber-

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ation of Organically Bound Fractions by Persulfate Oxidation.




Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chimica Acta, 27:  31-36.




          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at 15 psi for 30 min-




utes.  The resultant ortho-phosphate was then determined col-




orimetrically as the molybdenum-blue complex with the optical




density measured at 882 mn.




     7-   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley, J.P., 1962.  A




Modified Single Solution Method for the Determination of Phos-




phate in Natural Waters.  Analytica Chimica Acta, 27:  31-36.




          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-



rically with the optical density measured at 885 mp,.




     8.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965.




          Total Kjeldahl Nitrogen includes ammonia and organ-




ic nitrogen and was determined by the standard micro-kjeldahl




procedure.  The sample was digested in the presence of strong

-------
acid to convert the organic nitrogen to ammonia.  The ammonia




was then distilled, collected in boric acid solution, nessler-




ized and determined colorimetrically.




     9.   Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined by




automation of the above procedure using the Technicon "Auto




Analyzer."  This procedure utilizes cadmium reduction of ni-




trate to nitrite and subsequent diazotization with sulfanil-




amide and N-(l-naphthyl)-ethylenediamine dihydrochloride with




the optical density measured at £ljO m(J,.  The results were re-




ported as nitrogen.




     10.  Ammonia




          Reference:  Southeast Water Laboratory, FWQA,




Methodology for the colorimetric determination of ammonia



by the phenol-hypochlorite reaction.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969-




          Ammonia nitrogen was determined by automation of




the phenol-hypochlorite procedure as described in the South-




east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the indophenol

-------
blue color, formed by  the reaction  of  ammonia with alkaline




phenol-hypochlorite, was increased  using sodium nitroprusside




as an intensifying agent.   The  optical density  was measured




at 630 mn and calculated as NH-j-N.




     11.  Chlorophyll  a.




          Reference:   A Practical Handbook  of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 167,  Fish-




eries Research Board of Canada, Ottawa,  Canada.   1968.




          Chlorophyll  £ was determined by extraction  of milli-




pore filtered samples  in Q0$  acetone and read spectrophoto-




metrically.




     12.  Coliform




          Reference:   Standard Methods for  the  Examiniation  of




Water and Wastewater,  12 ed., 1965>.




          Coliform population was determined using the  £ tube-




3 dilution Multiple-Tube Fermentation  Technique.   Lauryl sul-




fate tryptose broth was used  for the presumptive  test with in-



cubation at 35>8-0.5>'C.  Brilliant green  lactose bile  broth was



used for the confirmatory test with incubation  at 35°-0.5°C.



The results were reported as  the Most  Probable  Number (MPN).




     13.  Fecal Coliform




          Reference:   Standard Methods for  the  Examination of




Water and Wastewater,  12 ed., 1965.




          Water Pollution Control Research  Series, WP-20-3.

-------
          Fecal Coliform population was determined using the



$ tube-3 dilution Multiple-Tube Fermentation Technique.  Lauryl



sulfate tryptose broth was used for the presumptive test with



incubation at 35°-0.5eC.  EC medium was used for the confirm-



atory test with air incubation at 1|5.59±0.5>°C.  The results



were reported as the Most Probable Number  (MPN).

-------
                    II STATION LOCATIONS



Transect     Station     Location
   AA           1        Buoy RBC




                2        Buoy R 28C




   A            1        Off tower at Windmill Point




                2        Red Flasher "IOC"




                3        Black and white buoy "13B"




   B            1        Red Flasher "2" Magothy River




                2        Red Nun "lj.C"




                3        Black Flasher, bell "11"




   C            1        Off house at Tydings-on-the-Bay




                2        Red Flasher, bell »2C"




                3        Edge of dumping grounds




   D            1        Off Sandy Point




                2        Red Flasher, gong "8"




                3        South edge of dumping grounds




   E            1        Off Hacketts Point




                2        Red Flasher, gong "V




                3        Off Matapeake ferry slip



   F            1        Tolly's Point, Buoy "33"




                2        Mid-Bay




                3        Brickhouse Bar,  Buoy "20B"




   G            1        Off Bembe Beach




                2        Bay Buoy (bell)

-------
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WATER QUALITY SURVEY
        OF THE
   CHESAPEAKE  BAY
   IN THE  VICINITY  OF
     SANDY  POINT
                           appendix i

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                         WATER QUALITY SURVEY

                                OF THE

                      HEAD OF THE CHESAPEAKE BAY

                         MARYLAND TRIBUTARIES


                              1970-1971

                             DATA REPORT

                              Number 23
    Annapolis  Field Office
           Region III
Environmental Protection Agency

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                  Annapolis Field Office
                        Region III
             Environmental Protection Agency
                  1970-1971 Data Report


                        Number 23
                   WATER QUALITY SURVEY

                          OF THE

                HEAD OF THE CHESAPEAKE BAY

                   MARYLAND TRIBUTARIES
                          Staff

   James ¥. Marks,  Chief,  Analytical  Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R.  Favorite,  Statistician
             Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                   Page




  I  INTRODUCTION	  1



 II  STATION LOCATIONS	  7



III  SURVEY RESULTS	  8



 IV  MAP	,	appendix  i

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                       I INTRODUCTION




A.   Purpose and Scope



     During 1970 and 1971 the Annapolis Field Office, Region




III, Environmental Protection Agency, conducted sampling




cruises on the head of the Chesapeake Bay tributaries.  The




purpose of these surveys was to determine levels of eutro-




phication of waters entering the bay.




B.   General Remarks




     The surveys included samples taken of the Sassafras River,




Elk River, Bohemia River, C and D Canal, Northeast River and




two points in the upper bay.  Analyses for nutrients, dissolved




oxygen and chlorophyll a were run by the Annapolis Field Office




for 1970 and 1971.  Analysis for total organic carbon was made




in April, 1971.  Bacteriological samples were taken three times




during June, 1971.




C.   Sampling Procedures




     Samples were obtained using a small submersible pump at-



tached to a wire cable calibrated in feet.  The pump was low-




ered to the desired depth and allowed to run for two minutes




before receiving samples in plastic containers.  Dissolved



oxygen (DO) samples were obtained directly from the pump out-




let extending to the bottom of a conventional 300 ml DO bottle.




The sample was allowed to overflow the bottle several times and



then fixed immediately.

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     Bacteriological samples were taken from surface waters




directly into a sterile 160 ml prescription bottle.




     All samples were immediately stored on ice and analyses




started upon return to the laboratory, generally within two




hours of sampling.




D.   Measured Parameters and AnalyticalJMethods




     1.   Water temperature was determined using a mercury



thermometer inserted into the sample container immediately




upon collection.




     2.   Water temperature was read from a Beckman Salinometer.




     3.   Light extinction, in inches, was read with a 12"




(30 cm) white secchi disk.




     ll.   Conductivity was read from a calibrated Beckman




Salinometer.




     5.   Salinity was determined with a calibrated Beckman



Salinometer.




     6.   Dissolved Oxygen




          Reference:  FWPCA Methods for Chemical Analysis of




Water and Wastes, November 1969.




          Dissolved Oxygen was determined by the azide modi-




fication of the basic Winkler method with the titration done




potentiometrically with a Fisher automatic "titralyzer."




     7.   Total Phosphorus




          Reference:  Menzel, D.W. and Corwin, N., 1965.  The

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Measurement of Total Phosphorus  in  Seawater  Based on the Lib-



eration of Organically Bound Fractions  by Persulfate Oxidation.



Limonology and Oceanography, 10:  280-282.



          Murphy, J. and  Riley,  J.P., 1962.   A Modified Single



Solution Method for the Determination of Phosphate in Natural



Waters.  Analytica Chimica Acta,  27:  31-36.



          Total Phosphorus was determined after  persulfate



oxidation of the sample in an autoclave at 15 psi for 30



minutes.  The resultant ortho-phosphate was  then determined



colorimetrically as the molybdenum-blue complex  with the op-



tical density measured at 882 mp..



     8.   Inorganic Phosphorus



          Reference:   Murphy, J.  and Riley,  J.P.,  1962.   A



Modified Single Solution  Method  for the Determination of Phos-



phate in Natural Waters.  Analytica Chimica  Acta,  27:   31-36.



          Inorganic Phosphorus was  determined by automation



of the above procedure using the  Technicon "Auto Analyzer."



The molybdenum-blue complex formed  was  determined colorimet-



rically with the optical  density measured at  885 mji.



     9.   Total Kjeldahl  Nitrogen



          Reference:   Standard Methods  for the Examination of



Water and Wastewater,  12  ed., 1965.



          Total Kjeldahl  Nitrogen includes ammonia  and organic

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nitrogen and was determined by the standard micro-kjeldahl




procedure.  The sample was digested in the presence of strong




acid to convert the organic nitrogen to ammonia.  The ammonia




was then distilled, collected in boric acid solution, nessler-




ized and determined colorimetrically.




     10.  Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined by




automation of the above procedure using the Technicon "Auto




Analyzer."  This procedure utilizes cadmium reduction of




nitrate to nitrite and subsequent diazotization with sulfan-




ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride with




the optical density measured at 5>UO up.  The results were re-




ported as nitrogen.




     11.  Ammonia




          Reference:  Southeast Water Laboratory, FWQA, Meth-



odology for the colorimetric determination of ammonia by the




phenol-hypochlorite reaction.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969.




          Ammonia nitrogen was determined by automation of




the phenol-hypochlorite procedure as described in the South-

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east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the  indophenol




blue color, formed by the reaction of ammonia with alkaline




phenol-hypochlorite, was increased using sodium  nitroprusside




as an intensifying agent.  The optical density was measured




at 630 ran and calculated as NH^-N.



     12.  Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a. was determined by extraction of milli-




pore filtered samples in 90$ acetone and read spectrophoto-




metrically.




     13.  Total Organic Carbon




          Reference:  FWPCA Methods for Chemical Analysis of




Water and Wastes^ November 1969.




          Total Organic Carbon was determined with a Dow-Beck-




man Carbonaceous Analyser after the sample had been purged with




nitrogen gas for five minutes.




     Ik-  Coliform



          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Coliform population was determined using the 5 tube-




3 dilution Multiple-Tube Fermentation Technique.  Lauryl sul-

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fate tryptose broth was used for the presumptive test with in-




cubation at 35°-0.£eC.  Brilliant green lactose bile broth was




used for the confirmatory test with incubation at 35>8±0.5>°C.




The results were reported as the Most Probable Number (MPN).



     15.  Fecal Coliform




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965-




          Water Pollution Control Research Series, WP-20-3.




          Fecal Coliform population was determined using the




5 tube-3 dilution Multiple-Tube Fermentation Technique.  Lauryl




sulfate tryptose broth was used for the presumptive test with




incubation at 35>°-0.58C.  EC medium was used for the confirm-




atory test with air incubation at 1|5.50-0.5*C.  The results




were reported as the Most Probable Number (MPN).

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                  II STATION LOCATIONS






Station           Location
   1              Sassafras River, Georgetown Bridge



   2              Sassafras River, Nun  "6"



   3              Sassafras River, Can  "3"



   1;              Sassafras River, off  Betterton



   £              Bay, midway between Nun  "2" and  Bell "1"



   6              Bay, Turkey Point, Nun "6"



   7              Elk River, Nun  "10"



   8              Bohemia River,  Nun "2"



   9              Bohemia River,  above  bridge



  10              Elk River, Can  "15"



  11              C and D Canal,  Nun "26"



  12              Elk River, Nun  "6"



  13              Elk River, Nun  "lit"



  lU              Northeast River, Nun  "2"



  15              Northeast River, Nun  "10"



  16              Northeast River, Nun  "18"



  17              Northeast River, mouth of creek

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    WATER  QUALITY  SURVEY
HEAD OF  CHESAPEAKE BAY TRIBUTARIES
     I     0     I     234
                                          appendix i

-------
                         WATER QUALITY SURVEY

                                OF THE

                         UPPER CHESAPEAKE BAY



                            1969-1970-1971

                             DATA REPORT

                              Number 2k
    Annapolis  Field Office
           Region  III
Environmental Protection Agency

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                  Annapolis  Field Office
                        Region III
             Environmental Protection Agency
                1969-1970-1971 Data Report


                        Number 2k
                  WATER QUALITY SURVEY

                          OF THE

                  UPPER CHESAPEAKE BAY
                          Staff:

   James W. Marks, Chief,  Analytical  Laboratory Section
Orterio Villa, Jr.,  Chief, Development Laboratory Section
              Anna R.  Favorite, Statistician
             Evelyn P. McPherson, Technician

-------
                      TABLE OF CONTENTS
                                                 Page



  I  INTRODUCTION	  1



 II  STATION LOCATIONS	  6



III  SURVEY RESULTS	  7



 IV  MAP	appendix  i

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                       I INTRODUCTION








A.   Purpose and Scope




     During 1969, 1970 and 1971, water quality studies were




undertaken by the Annapolis Field Office, Region III, Environ-




mental Protection Agency in the Upper Chesapeake Bay  (1968




data for this area appears in Head of Bay Tributaries, summer




1968 data report).  Objective of these cruises was to assess




the water quality of this portion of the bay.




B.   General Remarks




     Sampling surveys, field investigations and data analyses




have been conducted to determine existing conditions in the




Upper Chesapeake Bay.  Analyses were made for nutrients, dis-




solved oxygen, and chlorophyll a.  In July, 1971 analyses were




made for the following metals:  lead, zinc, copper, chromium,




and cadmium.  No significant concentrations of these metals




were found.




C.   Sampling Procedures




     Samples were obtained using a small submersible pump at-




tached to a wire cable calibrated in feet.  The pump was low-



ered to the desired depth and allowed to run for two minutes




before receiving samples in plastic containers.  Dissolved




oxygen (DO) samples were obtained directly from the pump out-




let extending to the bottom of a conventional 300 ml DO bottle.

-------
The sample was allowed to overflow the bottle several times



and then fixed immediately.  All samples were immediately



stored on ice and analyses started upon return to the lab-



oratory, generally within two hours of sampling.



D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury



thermometer inserted into the sample container immediately



upon collection.



     2.   Water temperature was read from a Beckman Salinometer.



     3.   Conductivity was read from a calibrated Beckman



Salinometer.



     k-   Salinity was determined with a calibrated Beckman



Salinometer.



     5.   Light extinction, in inches, was read with a 12"



(30 cm) white secchi disk.



     6.   The pH measurements were made with a field pH meter.



     7.   Total Phosphorus



          Reference:  Menzel, D.W. and Corwin, N., 196£.  The



Measurement of Total Phosphorus in Seawater Based on the Lib-



eration of Organically Bound Fractions by Persulfate Oxidation.



Limonology and Oceanography, 10:  280-282.



          Murphy, J. and fiiley, J.P., 1962.  A Modified Single



Solution Method for the Determination of Phosphate in Natural



Waters.  Analytica Chimica Acta, 27:  31-36.

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          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at 15> psi  for  30




minutes.  The resultant ortho-phosphate was  then determined




colorimetrically as the molybdenum-blue complex with the  op-




tical density measured at 882 mp..




     8.   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley,  J.P.,  1962.   A




Modified Single Solution Method for the Determination  of  Phos-




phate in Natural Waters.  Analytica Chimica  Acta,  27:  31-36.




          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined  colorimet-




rically with the optical density measured at 885 mjj..




     9.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965-




          Total Kjeldahl Nitrogen includes ammonia and organ-




ic nitrogen and was determined by the standard micro-kjeldahl



procedure.  The sample was digested in the presence of strong




acid to convert the organic nitrogen to ammonia.   The  ammonia



was then distilled, collected in boric acid  solution,  nessler-




ized and determined colorimetrically.




     10.  Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea  Water Analysis,

-------
J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries




Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined by



automation of the above procedure using the Technicon "Auto




Analyzer."  This procedure utilizes cadmium reduction of




nitrate to nitrite and subsequent diazotization with sulfan-




ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride with




the optical density measured at 5^0 mjJ-  The results were re-




ported as nitrogen.




     11.  Ammonia




          Reference:  Southeast Water Laboratory, FWQA,




Methodology for the colorimetric determination of ammonia




by the phenol-hypochlorite reaction.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969.




          Ammonia nitrogen was determined by automation of




the phenol-hypochlorite procedure as described in the South-




east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the indophenol




blue color, formed by the reaction of ammonia with alkaline




phenol-hypochlorite, was increased using sodium nitroprusside




as an intensifying agent.  The optical density was measured




at 630 mjj, and calculated as NH/j-N.

-------
     12.  Dissolved Oxygen



          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965-



          FWPCA Methods for Chemical Analysis of Water and



Wastes, November 1969.



          Dissolved Oxygen was determined by the azide modi-



fication of the basic Winkler method with the titration done



potentiometrically with a Fisher automatic "titralyzer."



     13.  Chlorophyll a



          Reference:  A Practical Handbook of Sea Water Anal-



ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-



eries Research Board of Canada, Ottawa, Canada.  1968.



          Chlorophyll a was determined by extraction of milli-



pore filtered samples in 90$ acetone and read spectrophoto-



metrically.



     Ik'  Metals



          Reference:  EPA Methods for Chemical Analysis of



Water and Wastes, 1971.



          Metals in solution were determined by atomic ab-



sorption spectroscopy.

-------
                    II STATION LOCATIONS

Station Number	Station Location	


      T2                      Bay off Sassafras River between
                              N#26 and N#2 north  of channel

      T3                      Spesiitie Channel N#2

      Tk                      Off Stillpond Buoy  #22

      T5                      Off Romney Creek Buoy C#l

      T6                      Off Fairlee Creek Buoy #32

      T7                      Lower Pooles Island Buoy  #C3

      T8                      Buoy S#U1B

      T9                      Buoy R#l6

      T10                     Buoy between CS and S#l8B

      Til                     Horn Buoy off North Pt. Light

-------





























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                  Annapolis Field Office
                        Region III
              Environmental Protection Agency
                     1970 Data Report


                         Number 27
                      POTOMAC  ESTUARY

                   WASTEWATER TREATMENT

                       PLANTS  SURVEY
                          Staff:

   James ¥. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                   Page




  I  INTRODUCTION	   1




 II  STATION LOCATIONS	   £




III  SURVEY RESULTS	   6




 IV  MAP	appendix  i

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                       I INTRODUCTION




A.   Purpose and Scope




     In order to obtain more information regarding wastewater




characteristics, the Annapolis Field Office, Region III, En-




vironmental Protection Agency received a twenty-four hour com-




posite effluent sample from twenty-one Potomac Estuary sewage




treatment plants for a four-day period, April 12-15, 1970. On




September 15, 1970 these facilities were again asked to send




a twenty-four hour composite effluent sample, before chlorin-




ation.  Purpose of this survey was:




     1.   to aid in updating our data, which is required as




          stipulated by the Potomac Enforcement Conference.




     2.   to investigate the effect of wastewater effluent




          on the water quality of the Potomac estuary.




B.   General Remarks




     The assistance and cooperation of the participating waste-




water treatment plants was greatly appreciated during this




four-day intensive study.  Nutrient as well as carbon anal-




yses were made upon delivery of sample to the Annapolis Field




Office.




C.   Sampling Procedures




     The effluent was sampled before chlorination by flow for




twenty-four hours.   Each day part of the composite sample




(about 1,000 cc) was poured into a container provided by the

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Annapolis Field Office.  Containers were delivered to the




Blue Plains Sewage Treatment Plant pickup point.




D.   Measured Parameters and Analytical Methods




     1.   Total Phosphorus




          Reference:  Menzel, D.¥. and Corwin, N., 1965- The




Measurement of Total Phosphorus in Seawater Based on the Lib-




eration of Organically Bound Fractions by Persulfate Oxida-




tion.  Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Sing-




le Solution Method for the Determination of Phosphate in




Natural Waters.  Analytica Chimica Acta, 27:  31-36.




          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at 15 psi for 30




minutes.  The resultant ortho-phosphate was then determined




colorimetrically as the molybdenum-blue complex with the op-




tical density measured at 882 mp,.




     2.   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley, J.P., 1962.  A




Modified Single Solution Method for the Determination of Phos-




phate in Natural Waters.  Analytica Chijnica Acta, 27: 31-36.




          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-




rically with the optical density measured at 885 m|i.

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     3.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the  Examination  of




Water and Wastewater, 12 ed., 1965-




          Total Kjeldahl Nitrogen  includes ammonia and  organ-




ic nitrogen and was determined by  the standard  micro-kjeldahl




procedure.  The sample was digested in the presence  of  strong




acid to convert the organic nitrogen to ammonia.  The ammonia




was then distilled, collected in boric acid solution, nessler-




ized and determined colorimetrically.




     1;.   Nitrate + Nitrite




          Reference:  A Practical  Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined  by




automation of the above procedure  using the Technicon "Auto




Analyzer."  This procedure utilizes cadmium reduction of




nitrate to nitrite and subsequent  diazotization with sulfan-




ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride  with




the optical density measured at 5^0 mn.  The results were re-




ported as nitrogen.




     5.   Ammonia




          Reference:  Southeast Water Laboratory, FWQA,




Methodology for the colorimetric determination  of ammonia




by the phenol-hypochlorite reaction.

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          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 19&9.




          Ammonia nitrogen was determined by automation of




the phenol-hypochlorite procedure as described in the South-




east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the indophenol




blue color, formed by the reaction of ammonia with alkaline




phenol-hypochlorite, was increased using sodium nitroprusside




as an intensifying agent.  The optical density was measured




at 630 mu. and calculated as NH^-N.




     6.   Total Organic Carbon




          Reference:  Beckman Instruments, Bulletin 1|.05>9.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969.




          Total Organic Carbon was determined with a Dow-Beck-




man Carbonaceous Analyser after the sample had been purged




with nitrogen gas for five minutes.



     7.   Total Carbon




          Reference:  Beckman Instruments, Bulletin i;059.



          Total Carbon was determined with a Dow-Beckman Car-



bonaceous Analyser using the sample as received.

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                     II STATION LOCATIONS
Station
Location
   1   Alexandria




   2   Arlington



   5   Blue Plains




   6   Fairfax




   7   Fairfax




   8   Fairfax




   9   Ft. Belvoir #1




  10   Ft. Belvoir #2




  11   Lorton



  12   Marine Corps Air Station, Brown Field




  13   Marine Corps Schools, Main Plant




  lit   Marine Corps Schools, Rifle Range




  If?   Marine Corps Schools, Camp Upshur




  16   Naval Ordnance Laboratory




  17   Naval Ordnance Station, Site I



  18   Naval Ordnance Station, Site II




  19   Naval Ordnance Station, Site III



  20   Naval Ordnance Station, Site IV




  21   Naval Weapons Laboratory




  22   Pentagon




  23   Piscataway
                        Alexandria, Va.




                        Arlington, Va.




                        Washington, B.C.




                        Dogue Creek




                        Hunting Creek




                        Westgate




                        Ft. Belvoir, Va.




                        Ft. Belvoir, Va.




                        Lorton, Va.




                        Quantico, Va.




                        Quantico, Va.




                        Quantico, Va.




                        Quantico, Va.




                        White Oak




                        Indian Head




                        Indian Head




                        Indian Head




                        Indian Head




                        Dahlgren, Va.




                        Arlington, Va.




                        Piscataway Creek

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                                                   Ill SURVEY RESULTS
                                                          1970
                                   POTOMAC ESTUARY WASTEWATER TREATMENT  PLANTS SURVEY
                                                 ANNAPOLIS FIELD OFFICE
Sample
Number
Date
Sample
Taken
Total P
POu
mg/1
Inorganic P
mg/1
TKN
mg/1 N
mg/1
NH3
mg/1 N
TOG
mg/1
TC
mg/1
70010.311
    lliOl
    1501
    1601
  091601
700iil312
    Iil02
    1502
    1602
  091602
700U1313
    1)403
    1503
    1620
  090926
    1603
ii-12
li-13
k-lk
Ii-l5
9-15
li-12
li-13
k-lk
li-15
9-15
ii-12
ii-13
k-lk
k-15
9-09
9-15
                                                  Station 1 - Alexandria
36.022
37.651
22.302
22.569
31.960
32.550
29-50U
13.92U
19.266
26.510
27.3U2
22.238
17.773
11.56k

22.150
22.750
22.000
11.850
9.600
18.500
18.950
20.050
111. 870
13.120
2li.060
                                                  Station 2 - Arlington
21.100
18.350
li.960
10.500
33.300
6.360
9.620
8.710
6.620
8.1i55
                                                 Station 5  - Blue Plains
                                           15.25015-550
                                           111. 800            17.960
                                            9.550            12.050
                                            5.870              1.560
I6.ii00            16.060
                .001
                .001
               6.830
               1.320
                .382
               9.110
               5.300
               U.160
               5.U70
               7.820
                                  .750
                                  .IiOO
                                 1.2liO
                .367
                                                                                         17.000
                                                                                         18.000
                                                                                          8.280
                                                                                         13-380
                                                                                         19.310
                                                                                          U.600
                                                                                          5.100
                                                                                          7.180
                                                                                          9.280
                                                                                          9.720
                            1U.600
                            13.200
                             8.700
                                                                                          5.9UO
                                                            liS.OO
                                                            W.53
                                                            lil.9li
                                                            3U.79
                                                            55.28
                                                            13,19
                                                            20.77
                                                            2li.85
                                                            19.36
                                                            19.02
                                                            2li.38
                                                            33-68
                                                            30.76
                                                            22.61i
                                                            32.77
                                                            26.61i
                                                                        7li-30
                                                                        50.85
                                                                        lii. 55
                                                                        16.23
                                                                        20.95
                                                                        25.142
                                                                        16.53
32.7ii
ill.98
3ii.98
23.07
72.1i5
700lil31ii
    llioli
    I50ii
    1603
  09160U
    liio5
    1505
  091605
700liljl6
    Ili06
    1506
    1605
  091606
700U1317
    Hi07
    1507
    1606
  091607
700iil3l8
    Iii08
    1508
    lc,07
  091608
U-12
li-13
k-lk
Ii-l5
9-15
k-12
li-13
k-lk
li-15
9-15
               li-12
               lt-13
               k-lk
               li-15
               9-15
               li-12
               k-13
               li-lli
               li-15
               9-15
               ii-12
               Ii-13
               li-lli
               li-15
               9-15
38.192
k9.k31
2^.906
17.835
39.600
U2.966
U5.578
25.358
23.119
lil.780
             37.5U1
             U9.651
             50.038
             22.018
             37.960
             18.662
             21.137
             11.321
             10.U59
             13.960
             25.600
             28.95ii
             lli.717
             15.082
             22.690
 Station 6 -  Fairfax -  Dogue Creek
29.60013.6301.110
26.850             lli.990         .liOO
18.050             11.820        1.850
11.200              8.880        2.680
36.600             21.61iO        1.260

Station 7 - Fairfax - Hunting Creek
^9.200             19.51lO         T510
20.350             22.200         .IiOO
16.350             10.260        l.lilO
13.250             10.780        2.330
31.300             16.060         .886

  Station 8 - Fairfax -  Westgate
20725018.670.380
20.850             19.510         .001
12.700             13.7UO        1.090
 9.200              8.650        1.990
20.500             21.180         .001

    Station 9 - Ft.  Belvoir #1
11.1503-5905.360
lli.150              3.6UO       10.800
 8.000              li.360        6.760
 6.360               .280        9.130
10.900              3.635        9.160
                                               Station 10 - Ft. Belvoir #2
              20.1^0
              23.500
              10.250
               7.850
              16.950
16.680
18.520
12. QUO
 2.830
10.550
                                                                             .690
                                                                              800
                                                                              360
                                                                              800
                                                                            7.680
                            17.000
                            16. IiOO
                            10.800
                             9.280
                            18.200
                            23. IiOO
                            26.200
                             8.100
                            12.290
                            lli.170
                                                            18.800
                                                            17.600
                                                             7.0iiO
                                                             7.350
                                                            16.390
                                                             5.070
                                                             2. IiOO
                                                             2.820
                                                               .990
                                                             3.930
                                              20.300
                                              25.500
                                               9.U60
                                              11.660
                                              11.670
                                                                                                       23.20
                                                                                                       3li.U3
                                                                                                       21.53
                                                                                                       21.83
                                                                                                       36,1)4
                                                                                                      39.00
                                                                                                      Ii0.12
                                                                                                      32.53
                                                                                                      2li.26
                                                                                                      38.26
                                         72.72
                                         18.58
                                         62.86
                                         52.66
                                         86.27
                                         20.09
                                         26.U8
                                         1U.59
                                         16.57
                                         18.11
                                                           15.89
                                                           50. kl
                                                           25.30
                                                           31.58
                                                           2U.70
                                                                        25.03
                                                                        U2.19

                                                                        19.'58
                                                                        ill. 79

                                                                        37.57
                                                                        26.07
                                                                        72.57
                                                                        18.03
                                                                        65.70
                                                                        52.2li
                                                                        22.80
                                                                        25.00
                                                                        17.27
                                                                        15.35
27.03
56.92
37.98
35.81

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-------
Sample
Number
70041319
20
21
22
70041615
700^1616
70041617
70041618
701-^1610
70041611
70041612
70( (41613
70'. 41614
700/41619
70C J41323
1409
1509
1608
c 91609
70041324
1410
1510
1609
091610
liate
Sample
Taken
14-12
4-15
U-15
4-15
4-15
4-15
li-15
4-15
U-15
4-15
14-15
k-12
14-13
4-14
U-15
9-15
14-12
4-13
4-14
k~l5
9-15
Total P Inorganic P N02+NC>3
POj, POL TKN mg/1
mg/1 mg/1 mg/1 N N03-N
Station 11 - Lorton
NH3
mg/1 N

18.228 9.150 15.550 .320 13.100
17.902 8.750 16.1400 .3kO 13.300
20.832 16.600 15.980 .240 15.100
20.181 16.600 114.990 .240 18.900
Station 12 - Marine Corps Air Station, Brown Field - Quantico, Va.
114.312 10.600 1.560 10.300
Station 13 - Marine Corps Schools, Main Plant - Quantico,
19.816 16.600 13. WO .960
Station 1)4 - Marine Corps Schools. Rifle Range - Quantico,
16.183 11.500 It. 550 5.430
Station 15 - Marine Corps Schools, Camp Upshur - Quantico,
25.321 15.800 2.520 19.120
Station 16 - Naval Ordnance Laboratory - White Oak
27.523 25.150 1.380 .100
Station 17 - Naval Ordnance Station, Site I
17.615 10.600 8.810 .180
Station 18 - Naval Ordnance Station, Site II
8.257 1.000 1.610 .MO
Station 19 - Naval Ordnance Station, Site III
9.908 6.000 .280 11.790
Station 20 - Naval Ordnance Station Site, IV
20.367 114.750 17.960 1.190
Station 21 - Naval Weapons Laboratory - Dahlgren, Va.
9.586 5.820 2.010 l4.)4l40
Station 22 - Pentagon
24.955 22.750 21.070 2.260
36.000 23.300 28.420 1.100
20.038 16.150 13.770 1.080
21.358 18.250 15.130 2.460
23.780 16.650 29.700 1.190
Station 23 - Piscataway
19.530 114.800 13.1430 2.870
20.257 16.200 .339 2.200
141.207 10.350 12.610 2.680
11.225 6.200 7.770 3.280
21.600 16.950 5.51i5 9.790
2.720
Va.
15.470
Va.
9.210
Va.
.550
31.570
11.160
1.860
.001
23.300
2.820
33.000
50.800
25.400
29.400
22.500
16.900
13.000
10.780
9.760
3.500
TOO
mg/1
45.96
51.79
27.10
24.01
17.12
18.27
15.18
30.36
30.59
29.87
22.72
12.98
21.75
l5.oo
22.91
85.12
24.95
28.39
51.83
13.44
18.68
39.18
17.15
14.36
TC
mg/1
57.85
62.81
31.28
30.69
11.91
17.05
11.09
26.62
26.76
29.15
22.24
8.88
23.65
16.03
28.12
83.24
41.71
30.91
13-31
19.22
48.64
17.75

-------

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                                             5- BLUE  PLAINS
LORTON .VA.-II
                     PENTAGON-22

                       ARLINGTON-2

                     ALEXANDRIA -I
                 FAIRFAX .WESTGATE-8->-

          FAIRFAX . HUNTING CREEK-7
      FAIRFAX . DOGUE CREEK-
              12-MARINE CORPS AIR STATION . BROWN) FIELD
               13-MARINE CORPS SCHOOLS, MAIN  PLJANT
                                          A
                14-MARINC CORPS SCHOOLS.  RIFLE  RANGE
                 IS-MARINE  CORPS  SCHOOLS.
                                                  NAVAL  ORDNANCE LABORATORY — I «
                                       8- FORT 8ELVOIR W I
                                       10-FORT  BELVOIRW2
                                     IT-NAVAL ORDNANCE STATION. SITE I
                                 'l 8-NAVAL  ORDNANCE STATION. SITE 2
                               -NAVAL  ORDNANCE  STATION . SITE 3
                          20-NAVAL ORDNANCE  STATION SITE 4
                                                  21-NAVAL  WEAPONS LABORATORY.
                                                     OAHLGREN . VA.
                   POTOMAC  ESTUARY
       WASTE  WATER  TREATMENT  PLANTS
                              1970
                                                   10
                         SCALE  IN  MILES

-------

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                     WATER QUALITY SURVEY

                            OF THE

                       POTOMAC ESTUARY

                   EMBAYMENTS AND TRANSECTS


                             1970
                          DATA REPORT

                           Number 28
     Annapolis Field Office
           Region III
Environmental Protection Agency

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                 Annapolis Field Office
                       Region III
             Environmental Protection Agency
                    1970 Data Report


                        Number  28
                  WATER QUALITY SURVEY

                         OF THE

                     POTOMAC ESTUARY

                EMBAYMENTS AND TRANSECTS
                         Staff:

  James ¥. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
             Anna R. Favorite, Statistician
             Evelyn P. McPherson, Technician

-------

-------
                      TABLE OF CONTENTS
                                                   Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  6




III  SURVEY RESULTS	  9




 IV  MAP	appendix  i

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                       I INTRODUCTION






A.   Purpose and Scope



     During 1970, water quality studies were continued by the



Annapolis Field Office, Region III, Environmental Protection



Agency in the Potomac estuary watershed.  Purpose of  these



surveys was to determine existing water quality. The results



of these investigations are presented in this report.




B.   General Remarks



     Transect stations were sampled during February and March.



Mid-channel samples only were taken using stations that had



previously been transected.  Also included in this report are



selected embayments sampled from February to July.  Nutrient



as well as dissolved oxygen, carbon and chlorophyll a. anal-



yses were made by the Annapolis Field Office.



C.   Sampling Procedures



     Samples were obtained using a small submersible pump at-



tached to a wire cable calibrated in feet.  The pump was



lowered to the desired depth and allowed to run for two min-



utes before receiving samples in plastic containers. Dissolved



oxygen (DO) samples were obtained directly from the pump out-



let extending to the bottom of a conventional 300 ml DO bottle.



The sample was allowed to overflow the bottle several times



and fixed.  All samples were ijranediately stored on  ice  and

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-------
analyses  started upon  return  to  the  laboratory,  generally




within  two hours of  sampling.




D.   Measured Parameters  and  Analytical Methods




     1.   Water temperature was  read from a  Beckman Salin-




ometer.




     2.   Light extinction, in inches, was made  with a 12"




(30  cm) white secchi disk.




     3.   Conductivity was read  from a calibrated  Beckman




Salinometer.




     1;.   Salinity was determined with a  calibrated Beckman




Salinometer.




     5.   Total phosphorus




          Reference:   Menzel, D.W. and Corwin, N.,  1965.  The




Measurement of Total Phosphorus  in Seawater  Based  on the  Lib-




eration of Organically Bound  Fractions by Persulfate Oxidation.




Limonology and Oceanography,  10:  280-282.




          Murphy, J. and  Riley,  J.P., 1962.  A Modified Single



Solution Method for  the Determination of  Phosphate  in Natural




Waters.  Analytica Chijnica Acta, 27:  31-36.



          Total Phosphorus was determined after  persulfate



oxidation of the sample in an autoclave at 15 psi for 30




minutes.  The resultant ortho-phosphate was  then determined




colorinetrically as  the molybdenum-blue complex  with the  op-




tical density measured at 882 m|-u

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     6.   Inorganic Phosphorus



          Reference:  Murphy, J. and Riley, J.P., 1962.  A



Modified Single Solution Method for the Determination of Phos-



phate in Natural Waters.  Analytica CMmica Acta, 27:  31-36.



          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."



The molybdenum-blue complex formed was determined colorimet-




rically with the optical density measured at 88£ mn.



     7.   Total Kjeldahl Nitrogen



          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965.



          Total Kjeldahl Nitrogen includes ammonia and organ-



ic nitrogen and was determined by the standard micro-kjeldahl



procedure.  The sample was digested in the presence  of strong



acid to convert the organic nitrogen to ammonia.  The ammonia



was then distilled, collected in boric acid solution, nessler-



ized and determined colorimetrically.



     8.   Nitrate + Nitrite



          Reference:  A Practical Handbook of Sea Water Analysis,



J.D.H. Strickland and T.R. Parsons, Bulletin 167, Fisheries



Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined by auto-



mation of the above procedure using the Technicon "Auto Anal*



yzer."  This procedure utilizes cadmium reduction of nitrate

-------
to nitrite and  subsequent  diazotization with sulfanilamide




and N-(l-naphthyl)-ethylenediamine dihydrochloride with the




optical density measured at  £1|0 nin.   The results were  report-




ed as nitrogen.




     9.   Ammonia




          Reference:  Southeast Water Laboratory, FWQA,




Methodology for the  colorimetric  determination of ammonia




by the phenol-hypochlorite reaction.




          FWPCA Methods for  Chemical  Analysis of Water and




Wastes, November 1969.




          Ammonia nitrogen was determined by automation of




the phenol-hypochlorite procedure as  described in the  South-




east Water Laboratory Methodology and later  adopted  as the




official FWPCA  procedure.  The intensity of  the indophenol




blue color, formed by the  reaction of ammonia with alkaline



phenol-hypochlorite, was increased using sodium nitroprussiide




as an intensifying agent.  The optical density was measured



at 630 m|J. and calculated as  NH-j-N.



     10.  Dissolved  Oxygen




          Reference:  FWPCA  Methods for Chemical Analysis of



Water and Wastes, November 1969.




          Dissolved  Oxygen was determined by the azide modi-




fication of the basic Winkler method  with the titration  done




potentiometrically with a  Fisher automatic "titralyzer."

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     11.  Total Organic Carbon




          Reference:  FWPCA Methods for Chemical Analysis of




Water and Wastes, November 1969.




          Total Organic Carbon was determined with a Dow-




Beckman Carbonaceous Analyzer after the sample had been purged




with nitrogen gas for five minutes.




     12.  Total Carbon




          Reference:  Beckman Instruments, Bulletin ij.0^9.




          Total Carbon was determined with a Dow-Beckman




Carbonaceous Analyzer using the sample as received.




     13.  Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 167, Fish-




eries Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll EL was determined by extraction of milli-




pore filtered samples in 90$ acetone and read spectrophoto-




metrically.

-------

-------
                    II STATION LOCATIONS
Transect Station       Location
        7              Piscataway "77"






        8              Dogue Creek Fl "67"






        8A             Gunston Cove Fl "6i|."






        9              Hallowing Point Fl "59"






       10              Indian Head N "5V1






       10A             Occoquan Bay Fl "5l"






       11              Possum Point Fl "kk"






       12              Sandy Point N "Ij.0"






       13              Smith Point Fl "27"






       Ik              Maryland Point Fl "21"






       15              Nanjemoy Creek N "10"






       l£A             Port Tobacco C "3"






       16              301 Bridge

-------
Embayment Station	Location
      7   1            Piscataway Creek, headwaters



      7   2                II        II




      73                "        "  , mouth




      7  MC            Potomac Fl "77"




      8   1            Dogue Creek, above boathouse




      82              "     "  j opposite boathouse




      83              "     "  , midway boathouse and Fl "67"




      8  MC            Potomac Fl "67"




      8A  1            Gunston Cove




      8A  2               "      "  , Can "3"




      8A  3               "      "  , Nun "2"




      8A MC            Potomac Fl "6k"




     10  MC            Indian Head




     IDA  0            Occoquan Bay, Fl "12"




     10A  1                "      " , Fl "9"




     10A  2                "      " 5 Fl "6"




     10A  3                "      " , Fl "2"




     10A 3A                "      " , Mid bay




     10A MC            Potomac Fl "5l»




     10B  0            Mattawoman Creek,  near bridge




     10B  1                "        »  ,  Bullitt Neck




     10B  2                "        "  3  Sweden Point

-------
Embayment Station	Location
     10B  3            Mattawoman Creek, Deep Point




     10B  MC            Potomac Fl "1£«




     11   MC            Possum Point




     12   MC            Sandy Point

-------
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                        16
    POTOMAC ESTUARY
EMBAYMENTS AND TRANSECTS
           1970
                      10
         <"•»• f IN uii

-------
                          WATER QUALITY SURVEY

                                  OF  THE

                              UPPER POTOMAC

                           ESTUARY ENFORCEMENT

                             CONFERENCE AREA

                                 1970

                             DATA REPORT

                               Number 29
     Annapolis Field Office
           Region III
Environmental Protection Agency

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-------
                  Annapolis Field Office
                        Region III
               Environmental Protection Agency
                     1970 Data Report


                         Number 29
                   WATER QUALITY SURVEY

                          OF THE

                       UPPER POTOMAC

                    ESTUARY  ENFORCEMENT

                      CONFERENCE AREA
                          Staff:

   James ¥. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                   Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  7




III  SURVEY RESULTS	  8




 IV  MAP	 appendix  i

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                       I INTRODUCTION








A.   Purpose and Scope



     In August, 1970, the Annapolis Field Office, Region III,




Environmental Protection Agency initiated a monitoring survey




to establish data on existing water quality with respect to




possible enforcement proceedings.  The results of these in-




vestigations of the upper portion of the Potomac estuary are




presented here.




B.   General Remarks




     For the first week of sampling (August 12), only DO and




bacterial analyses were made.  Subsequent nutrient runs in-




cluded DO, chlorophyll a, BOD and/or carbon analyses.




     Surface sample transects were made on the Maryland (RSM)




and Virginia (LSV) sides of the river with surface and usually




a bottom sample being taken in mid-channel (MC).




C.   Sampling Procedures




     Samples were obtained using a small submersible pump




attached to a wire cable calibrated in feet.  The pump was




lowered to the desired depth and allowed to run for two



minutes before receiving samples in plastic containers.




Dissolved oxygen (DO) samples were obtained directly from




the pump outlet extending to the bottom of a conventional




300 ml DO bottle.  The sample was allowed to overflow the

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bottle several times and fixed.




     Bacteriological samples were taken from surface waters




directly into a sterile 160 ml prescription bottle.




     Samples were stored on ice and analyses started upon




return to the Annapolis Field Office, generally within two




hours of sampling.




D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury




thermometer inserted into the sample container immediately




upon collection.




     2.   Light extinction, in inches, was read with a 12"




(30 cm) white secchi disk.




     3.   Total Phosphorus




          Reference:  Menzel, D.W. and Corwin, N., 1?65.  The




Measurement of Total Phosphorus in Seawater Based on the Lib-




eration of Organically Bound Fractions by Persulfate Oxida-



tion.  Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chiraica Acta, 27:  31-36.




          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at 15 psi for 30




minutes.  The resultant ortho-phosphate was then determined




colorimetrically as the molybdenum-blue complex with the op-

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tical density measured at 882 m(j..




     It.   Inorganic Phosphorus



          Reference:  Murphy, J. and Riley, J.P., 1962.  A



Modified Single Solution Method for the Determination of Phos-



phate in Natural Waters.  Analytica Chomica Acta, 27:  31-36.



          Inorganic Phosphorus was determined by automation



of the above procedure using the Technicon "Auto Analyzer."



The molybdenum-blue complex formed was determined colorimet-



rically with the optical density measured at 885 m^.



     5.   Total Kjeldahl Nitrogen



          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965-



          Total Kjeldahl Nitrogen includes ammonia and organ-



ic nitrogen and was determined by the standard micro-kjeldahl



procedure.  The sample was digested in the presence of strong



acid to convert the organic nitrogen to ammonia.  The ammonia



was then distilled, collected in boric acid solution, nessler-



ized and determined colorimetrically.



     6.   Nitrate + Nitrite



          Reference:  A Practical Handbook of Sea Water Analysis,



J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries Re-



search Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nigrogen was determined by



automation of the above procedure using the Technicon "Auto

-------
Analyzer."  This procedure utilizes cadmium reduction of



nitrate to nitrite and subsequent diazotization with sulfan-



ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride with



the optical density measured at £1;0 m(j..  The results were re-



ported as nitrogen.



     7.   Ammonia



          Reference:  Southeast Water Laboratory, FWQA,



Methodology for the colorimetric determination of ammonia



by the phenol-hypochlorite reaction.



          FWPCA Methods for Chemical Analysis of Water and



Wastes, November 1969.



          Ammonia nitrogen was determined by automation of



the phenol-hypochlorite procedure as described in the South-



east Water Laboratory Methodology and later adopted as the



official FWPCA procedure.  The intensity of the indophenol



blue color, formed by the reaction of ammonia with alkaline



phenol-hypochlorite, was increased using sodium nitroprusside



as an intensifying agent.  The optical density was measured



at 630 mn and calculated as NH3~N.



     8.   Dissolved Oxygen




          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965.



          FWPCA Methods for Chemical Analysis of Water and



Wastes, November 1969.

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          Dissolved Oxygen was determined by  the azide modi-



fication  of the basic Winkler method with the titration  done



potentiometrically with a Fisher automatic  "titralyzer."



      9.   Biochemical Oxygen Demand



          Reference:  Standard Methods for  the Examination of



Water and Wastewater, 12 ed., 1965.



          The Biochemical Oxygen Demand was determined by  the



azide modification of the basic Winkler method with  the  titra-




tion  done potentiometrically with a Fisher  automatic "titraly-



zer. " The samples as received were diluted if necessary and



transferred to standard 300 ml BOD bottles  in triplicate.   One



initial DO and two final DO determinations  were used throughout.



Incubation was started immediately at 20°C  and continued for



five  days after which they were titrated.



      10.  Total Organic Carbon




          Reference:  Beckman Instruments,  Bulletin  UOJ>9-



          FWPCA Methods for Chemical Analysis of Water and



Wastes, November 1969-



          Total Organic Carbon was determined with a Dow-Beck-



man Carbonaceous Analyzer after the sample  had been  purged with



nitrogen  gas for five minutes.



      11.  Chlorophyll a




          Reference:  A Practical Handbook  of Sea Water  Anal-



ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?,  Fish-

-------
eries Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a. was determined by extraction of mil-




lipore filtered samples in 9Q% acetone and read spectrophoto-




metrically.




     12.  Fecal Coliform




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Water Pollution Control Research Series, WP-20-3.




          Fecal Coliform population was determined using the




5 tube-3 dilution Multiple-Tube Fermentation Technique.




Lauryl sulfate tryptose broth was used for the presumptive




test with incubation at 3f>*-0.5>°C.  EC medium was used for




the confirmatory test with air incubation at I(.5.50-0.59C.




The results were reported as the Most Probable Number  (MPN).




     13-  Fecal Streptococcal Group




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.



          Fecal Streptococcal population was determined using




the 5 tube-3 dilution Multiple-Tube Fermentation Technique.




Azide dextrose broth was used for the presumptive test with




incubation at 350-0.5>0C.  Ethyl violet azide broth was used




for the confirmatory test with incubation at 35e-0.5>°C.  The




results were reported as the Most Probable Number (MPN).

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                    II STATION LOCATIONS






Station             Location
   0                Anacostia fiiver, South Capital  Street  Bridge




   1                Key Bridge




   2                liith Street Bridge




   3                Haines Point




   k                Bellevue




   kA               Goose Island




   5                Woodrow Wilson Bridge



   6                Broad Creek




   7                Piscataway




   8A               Gunston Cove




  10                Indian Head

-------
























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                                INSERT A
UPPER  POTOMAC ESTUARY

   ENFORCEMENT SURVEY
           1970

-------
                    WATER QUALITY OF THE

                      POTOMAC ESTUARY

                GILBERT SWAMP AND ALLEN'S FRESH

                            AND

                        GUNSTON COVE

                            1970

                         DATA REPORT
                           Number 30
     Annapolis Field Office
           Region III
Environmental  Protection Agency

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                  Annapolis Field  Office
                        Region III
              Environmental Protection Agency
                     1970 Data Report


                         Number 30
                      WATER QUALITY

                          OF THE

                     POTOMAC ESTUARY

             GILBERT SWAMP AND ALLEN'S FRESH

                           AND

                       GUNSTON COVE
                          Staff:

   James W. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                   Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  8




III  SURVEY RESULTS	 10




 IV  MAP	appendix  i

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                        I INTRODUCTION




 A.    Purpose and Scope




      In January 1970 the Annapolis Field Office,  Region III,




 Environmental Protection Agency was asked by the  State of




 Maryland,  Department of Chesapeake Bay Affairs to assist




 in  sampling the Gilbert Run watershed.   The  purpose of this




 study was  to establish ambient water quality prior to chan-




 nel disturbance resulting from the channelization project




 conducted  by the Federal Soil  Conservation Service.




      A special water quality survey of Gunston Cove was started




 in  the spring of 1970 continuing through September to determ-




 ine the eutrophic condition of the embayment area.




 B.    General Remarks




      The bi-monthly  samples taken of Gilbert Swamp and Allen's




 Fresh for  six months,  January-July,  1970,  were analyzed for




 nutrients,  DO,  carbon,  chlorophyll a and turbidity.




      Analyses run on monthly Gunston Cove  samples  included



 nutrients,  DO,  BOD,  carbon,  chlorophyll  a, coliform and fecal



 coliform.




 C.    Sampling Procedures




      Samples  for  chemical analyses were  obtained by dipping




 a plastic bucket  or  large funnel  into the  river water with a




minimum  of agitation.  Samples were  retained  in plastic  con-




 tainers.  Dissolved  oxygen  (DO) samples were  obtained by

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 siphoning from the bucket or by attaching a tube to the fun-




 nel outlet and extending it to the bottom of a conventional




 300 ml DO bottle.  The bottle was overfilled twice without




 excessive agitation, and the DO fixed immediately.



      Bacteriological samples were taken from surface waters




 directly into a sterile 160 ml prescription bottle.




      All samples were immediately stored on ice and analyses




 started upon return to the laboratory, generally within two




 hours of sampling.



 D.    Measured Parameters and Analytical Methods




      1.    Water temperature was  determined using a mercury




 thermometer  inserted into the sample  container immediately




 upon collection.




      2.    Light extinction,  in inches,  was read with a  12"




 (30 cm) white  secchi disk.




      3.    Total Phosphorus




           Reference:  Menzel,  D.W. and  Corwin,  N.,  1965.  The



Measurement  of Total Phosphorus  in Seawater Based  on the




Liberation of  Organically Bound  Fractions  by Persulfate Ox-




idation.   Limonology and  Oceanography,  10:  280-282.




          Murphy,  J.  and Riley,  J.P., 1962.  A Modified Single




Solution Method for  the Determination of Phosphate  in Natural




Waters.  Analytica Ghimica Acta, 2?:  31-36.




           Total Phosphorus was determined  after persulfate

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 oxidation of the  sample in an autoclave at II? psi for 30




 minutes.   The resultant ortho-phosphate was then determined




 colorimetrically  as  the molybdenum-blue complex with the op-




 tical  density measured at 882 mjj..




     li.    Inorganic  Phosphorus




           Reference:   Murphy, J.  and Riley, J.P., 1962.   A




 Modified  Single Solution Method for the Determination of Phos-




 phate  in  Natural  Waters.   Analytica Chiraica Acta, 27:  31-36.




           Inorganic  Phosphorus was  determined by automation




 of  the above procedure using  the  Technicon "Auto Analyzer."




 The molybdenum-blue  complex formed  was  determined colorimet-




 rically with the  optical density measured  at 885 rap..




     5.    Total Kjeldahl Nitrogen




           Reference:   Standard Methods  for the Examination of




 Water  and Wastewater,  12  ed.,  1965.




           Total Kjeldahl Nitrogen includes ammonia and organ-




 ic  nitrogen  and was determined by the standard micro-kjeldahl




 procedure.   The sample  was  digested in  the presence of strong




 acid to convert the organic nitrogen to ammonia.   The ammonia




 was then  distilled, collected in boric  acid solution,  nessler-




 ized and  determined colorimetrically.




     6.   Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water  Anal-




ysis,  J.D.H. Strickland and T.R. Parsons,  Bulletin 16?,  Fish-

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eries Research Board  of  Canada,  Ottawa,  Canada,  1968.



          Nitrate plus nitrite nitrogen  was determined by




automation of the above  procedure using  the Technicon  "Auto




Analyzer."  This procedure utilizes cadmium reduction of




nitrate to nitrite and subsequent diazotization  with sulfan-




ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride




with the optical density measured at fjlj.0 mix.   The results were




reported as nitrogen.




     7.   Ammonia




          Reference:  Southeast  Water Laboratory, FWQA,




Methodology for the colorimetric determination of ammonia




by the phenol-hypochlorite reaction.




          FWPCA Methods  for Chemical Analysis  of Water and




Wastes, November 1969.




          Ammonia nitrogen was determined by automation of




the phenol-hypochlorite  procedure as described in the South-




east Water Laboratory Methodology and later adopted as the



official FWPCA procedure.  The intensity of the  indophenol



blue color, formed by the reaction of ammonia  with alkaline




phenol-hypochlorite, was increased using sodium  nitroprusside




as an intensifying agent.  The optical density was measured




at 630 my, and calculated as NHo-N.




     8.    Dissolved Oxygen




          Reference:  Standard Methods for the Examination of

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Water and Wastewater,  12  ed.,  1965.




          Dissolved  Oxygen was determined by the  azide modi-




fication of  the basic  Winkler  method with the titration  done




potentiometrically with a Fisher  automatic  "titralyzer."




     9.   Biochemical  Oxygen Demand




          Reference:   Standard Methods  for  the Examination  of




Water and Wastewater,  12  ed.,  1965.




          The Biochemical Oxygen  Demand was determined by the




azide modification of  the basic Winkler method with  the  titra-




tion done potentiometrically with a Fisher  automatic "titraly-




zer."  The samples as  received were diluted if necessary and




transferred  to standard 300 ml BOD bottles  in triplicate.   One




initial DO and two final  DO determinations  were used throughout.




Incubation was started immediately at 209C  and continued for




five days after which  they were titrated.




     10.  Total Organic Carbon




          Reference:   Beckman  Instruments,  Bulletin  l±0%9.




          FWPCA Methods for Chemical Analysis  of  Water and



Wastes, November 1969.




          Total Organic Carbon was determined  with a Dow-Beckman




Carbonaceous Analyser after the sample had  been purged with




nitrogen gas for five miziutes.




     11.  Total Carbon




          Reference;   Beckman  Instruments,  Bulletin  ij.059.

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          Total Carbon was determined with a Dow-Beckman




Carbonaceous Analyser using the  sample as received.




     12.  Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada,  Ottawa, Canada.  1968.




          Chlorophyll a was determined by extraction  of mil-




lipore filtered samples in 90% acetone and read spectropho-




tometrically.




     13-  Coliform




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Coliform population was determined using the 5 tube-




3 dilution Multiple-Tube Fermentation Technique.  Lauryl sul-




fate tryptose broth was used for the presumptive test with




incubation at 35°-0.5eC.  Brilliant green lactose bile broth




was used for the confirmatory test with incubation at 35"-0.5sC.




The results were reported as the Most Probable Number (MPN).



     Ik-  Fecal Coliform




          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965.




          Water Pollution Control Research Series, WP-20-3.




          Fecal Coliform population was determined using the




5 tube-3 dilution Multiple-Tube Fermentation Technique.

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Lauryl sulfate tryptose broth was used for the presumptive



test with incubation at 3f>9i0.59C.  EC medium was used  for




the confirmatory test with air incubation at U5.59±0.5*C.




The results were reported as the Most Probable Number  (MPN).




     l£.  Turbidity-




          Reference:  FWPCA Methods for Chemical Analysis of




Water and Wastes, November 1969.




          Turbidity was determined with a Hach photoelectric




nephelometer, calibrated in Jackson Turbidity Units.

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                    II STATION LOCATIONS




              Gilbert Swamp and Allen's Fresh
Station             Location
   1                Gilbert Swamp, Route 23k






   2                Gilbert Swamp, Route 232






   3                Gilbert Swamp, Route 6






   k                Gilbert Swamp, Oaks Road






   5>                Gilbert Swamp, Route 6 (Wheatley)






   6                Gilbert Swamp, Old Sycamore Road






   7                Allen's Fresh, Route 23U






   8                Allen's Fresh, Route 6 (Zekiah Swamp)






   9                Allen's Fresh, Route £ (Zekiah Swamp)






  10                Allen's Fresh, Route 382

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II STATION LOCATIONS




    Gunston Cove
Station
GC
GC
GC
GC
GC
GC
GC
GC
GC
GC
GC
GC
1
2
3
k
5
6
7
8
9
10
11
12
Location
Buoy "614." - same as Sta 8A
Nun "2" - same as Sta 8A 3,
White Stone Point
Can "3" - same as Sta 8A 2,
Near piles
Cable area
Near tidal flats - Accotink
Upper Accotink
Off Cedar Grove
Off piling
Upper Pohick flats
Extreme Upper Pohick

MC, embayment
embayment

embayment









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GUNSTON  COVE
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ALLENS FRESH AND GILBERT SWAMP
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                         SURVEY RESULTS

                             OF THE

                         CHESAPEAKE BAY

                           INPUT STUDY


                            1969-1970

                           DATA REPORT

                            Number 31
    Annapolis Field Office
          Region III
Environmental Protection Agency

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                  Annapolis Field Office
                        Region III
              Environmental Protection Agency
                   1969-1970 Data Report


                         Number 31
                      SURVEY RESULTS

                          OF THE

                      CHESAPEAKE BAY

                        INPUT STUDY
                          Staff:

   James W. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                   Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  8




III  SURVEY RESULTS	  9




 IV  MAP	appendix  i

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                       I INTRODUCTION




A.   Purpose and Scope




     In June 1969, the Annapolis Field Office, Region III, En-




vironmental Protection Agency initiated a weekly sampling pro-




gram of the Chesapeake Bay inputs.  The purpose of this study




was to determine the nutrient loadings into the Chesapeake Bay




from the six major drainage areas.




B.   General Remarks




     The monitoring started with nine selected stations, in-




creased to twelve in December 1969 and surveillance terminated




in August 1970.  Chemical analyses were made for nutrients,




dissolved oxygen, biochemical oxygen demand, carbon and chloro-




phyll a.




     Information pertaining to flows may be found in CTSL Tech-




nical Report #\il, "Chesapeake Bay Nutrient Input Study."




C.   Sampling Procedures




     Surface samples for chemical analyses were obtained by




dipping a plastic bucket into the river water with a minimum



of agitation.  Samples were retained in plastic quart contain-




ers.  Dissolved oxygen (DO) samples were obtained by siphoning



from the bucket extending the tube to the bottom of a conven-




tional 300 ml DO bottle.  The bottle was overfilled twice




without excessive agitation and the DO fixed immediately.  Temp-




erature was measured in the dipped bucket immediately after

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sampling.  All samples were stored on ice and analyses started




upon return to the laboratory, generally within  two hours  of




sampling.




D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury




thermometer inserted into the sample container immediately upon




collection.




     2.   Total Phosphorus




          Reference:  Menzel, D.W. and Corwin, N., 1965-   The




Measurement of Total Phosphorus in Seawater Based on  the Lib-




eration of Organically Bound Fractions by Persulfate  Oxidation.




Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chimica Acta, 2?:  31-36.




          Total Phosphorus was determined after  persulfate




oxidation of the sample in an autoclave at 15 psi for 30 min-




utes.  The resultant ortho-phosphate was then determined color-




imetrically as the molybdenum-blue complex with  the optical



density measured at 882 mp,.




     3.   Total Phosphorus, millipore filtered (Dissolved)




          Reference:  Menzel, D.W. and Corwin, N., 1965.   The




Measurement of Total Phosphorus in Seawater Based on  the Lib-




eration of Organically Bound Fractions by Persulfate  Oxidation.

-------
Limonology and Oceanography, 10:  280-282.




          Murphy, J., and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chimica Acta, 27:  31-36.




          The sample as received was filtered through a Type




HA millipore filter.  The Total raillipore filtered Phosphorus




was then determined after persulfate oxidation of the sample




in an autoclave at 15 psi for 30 minutes.  The resultant ortho-




phosphate was then determined colorimetrically as the molyb-




denum-blue complex with the optical density measured at 882 mp,.




     k»   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley, J.P., 1962.   A




Modified Single Solution Method for the Determination of Phos-




phate in Natural Waters.  Analytica Chimica Acta, 27:  31-36.




          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-




rically with the optical density measured at 88£ mp..




     5.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965.




          Total Kjeldahl Nitrogen includes ammonia and organ-




ic nitrogen and was determined by the standard micro-kjeldahl




procedure.  The sample was digested in the presence of strong

-------
acid to convert the organic nitrogen to ammonia.  The ammonia



was then distilled, collected in boric acid solution, nessler-



ized and determined colorimetrically.



     6.   Total Kjeldahl Nitrogen, millipore filtered (Dissolved)



          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 1965.



          The sample as received was filtered through a Type HA



millipore filter.  Total millipore filtered Kjeldahl Nitrogen



includes ammonia and organic nitrogen and was determined by the



standard micro-kjeldahl procedure.  The sample was digested in



the presence of strong acid to convert the organic nitrogen to



ammonia.  The ammonia was then distilled, collected in boric



acid solution, nesslerized and determined colorimetrically.



     7.   Nitrate + Nitrite



          Reference:  A Practical Handbook of Sea Water Anal-



ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 167, Fish-



eries Research Board of Canada, Ottawa, Canada, 1968.



          Nitrate plus nitrite nitrogen was determined by auto-



mation of the above procedure using the Technicon "Auto Anal-



yzer."  This procedure utilizes cadmium reduction of nitrate



to nitrite and subsequent diazotization with sulfanilamide



and N-(l-naphthyl)-ethylenediamine dihydrochloride with the



optical density measured at £UO mn.  The results were reported



as nitrogen.

-------
     8.   Ammonia



          Reference:  Southeast Water Laboratory, FWQA,




Methodology- for the colorimetric determination of ammonia




by the phenol-hypochlorite reaction.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969.



          Ammonia nitrogen was determined by automation  of




the phenol-hypochlorite procedure as described in the South-




east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the indophenol




blue color, formed by the reaction of ammonia with alkaline




phenol-hypochlorite, was increased using sodium nitroprusside




as an intensifying agent.  The optical density was measured




at 630 mjj. and calculated as NH^-N.




     9.   Total Organic Carbon




          Reference:  Beckman Instruments, Bulletin 1±059.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969-




          Total Organic Carbon was determined with a Dow-Beck-



man Carbonaceous Analyser after the sample had been purged



with nitrogen gas for five minutes.




     10.  Total Carbon




          Reference:  Beckman Instruments, Bulletin 1*059.




          Total Carbon was determined with a Dow-Beckman Car-

-------
bonaceous Analyser using the sample as received.




     11.  Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a was determined by extraction of mil-




lipore filtered samples in 90$ acetone and read spectrophoto-




metrically.




     12.  Dissolved Oxygen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 19&9-




          Dissolved Oxygen was determined by the azide modi-




fication of the basic Winkler method with the titration done




potentiometrically with a Fisher automatic "titralyzer."




     13.  Biochemical Oxygen Demand




          Reference:  Standard Methods for the Examination of



Water and Wastewater, 12 ed., 196£.




          The Biochemical Oxygen Demand was determined by the




azide modification of the basic Winkler method with the titra-




tion done potentiometrically with a Fisher automatic "titraly-




zer."  The samples as received were diluted if necessary and




transferred to standard 300 ml BOD bottles in triplicate.  One

-------
initial DO and two final DO determinations were used through-



out.  Incubation was started immediately at 20*G and contin-



ued for five days after which they were titrated.

-------
                    II STATION LOCATIONS






Station                Location
 CB 1       Susquehanna River, Conowingo Dam-Incoming



 CB 2       Susquehanna River, Conowingo Dam-Outgoing



 CB 3       Potomac River, Great Falls



 CB k       Rappahannock River, Fredericksburg, Route 1



 CB 5       York River, Pamunkey, Route 2-301



 CB 6       York River, Mattaponi, Route 2-301



 CB 7       James River, Richmond, Westside, Route lU7



 CB 8       James River, Chickahominy, Route 60



 CB 9       Patuxent River, Route 50



 CB 10      Patuxent River, Wayson's Corner Bridge, Route 1;



 CB 11      Patuxent River, Benedict Bridge, Route 231



 CB 12      Rappahannock River, Port Royal Bridge, Route 301

-------
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      SURVEY  RESULTS




            OF THE




CHESAPEAKE BAY INPUT  STUDY




          1969-1970






       10	0	10   20

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           UPPER CHESAPEAKE BAY WATER QUALITY  STUDIES

           BUSH RIVER, ROMNEY CREEK,  SPESUTIE   NARROWS
                    AND SWAN CREEK 1968-1971
               CHESAPEAKE AND DELAWARE CANAL 1970
                       CHESTER RIVER  1970
                     SEVERN RIVER 1970-1971
            GUNPOWDER, MIDDLE AND BIRD RIVERS  1971

                          DATA REPORT
                           Number 32
    Annapolis Field Office
          Region III
Environmental Protection Agency

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                  Annapolis Field Office
                        Region III
              Environmental Protection Agency
                        Data Report


                         Number 32
        UPPER CHESAPEAKE BAY WATER QUALITY STUDIES

        BUSH RIVER, ROMNET CREEK, SPESUTIE NARROWS
                 AND SWAN CREEK 1968-1971
            CHESAPEAKE AND DELAWARE CANAL 1970
                    CHESTER RIVER 1970
                  SEVERN RIVER 1970-1971
          GUNPOWDER, MIDDLE AND BIRD RIVERS 1971
                          Staff:

   James W. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn  P. McPherson,  Technician

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                      TABLE OF CONTENTS
                                                    Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	10




III  SURVEY RESULTS	• • • 1/j.



 IV  MAP	appendix  i

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                        I  INTRODUCTION




A.   Purpose and Scope




     Over the past four years, the Annapolis Field  Office has




conducted various special surveys of tho upper Chesapeake Bay




and a number of its tributaries.  The  results of  these  inves-




tigations are presented in this report.




     1.   Bush River, Romney Creek, Spesutie Narrows and Swan




Creek, 1-968-1970 - AFO  has continued investigation  of this




area at the request of  the Aberdeen Proving Ground  and  Harford




County Metropolitan Commission, primarily  to determine  the ef-




fects of the new Sod Run  Treatment Plant on water quality and




eutrophication.  Background water quality  data for  the  last




quarter of 196? may be  found in data report "Investigation of




Water Quality in the Chesapeake Bay and Tributaries at  Aberdeen




Proving Ground Department of the Army, Aberdeen,  Maryland, Oct-




ober to December 1967."   Nutrients, dissolved oxygen, biochem-




ical oxygen demand, carbon, chlorophyll a  and bacteriological



analyses were run on samples.




     2.   Chesapeake and  Delaware Canal, 1970 - AFO made an in-




vestigative study of the  effects of fresh  water diversion from




the Susquehanna River while work on the C  & D Canal enlargement




continued.  Samples taken May-July, 1970 included surface as




well as depth samples.  Nutrients, dissolved oxygen, carbon,




chlorophyll a. and zinc  (one run) were measured on return to

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the laboratory.



     3.   Chester River, 1970 - This was AFO's first field




study of the Chester River but background information may be




found In "CB-SRBP Working Document No. 20, FWPCA, Middle At-




lantic Region, September 1967." Several water quality sampling




runs were made March-September, with nutrients, dissolved ox-




ygen, biochemical oxygen demand, carbon and chlorophyll a anal-




yses being made on these samples.




     k*   Severn River, 1970-1971 - During these years, AFO




made a limited sampling survey of this river. Stations and



analyses run vary for each year.  In 1970 nutrients, dissolved




oxygen, carbon and chlorophyll a. were run.  1971 was strictly




a DO-bacteriological survey. Background information for base-




line data may be found in Data Report Number 10, "Water Qual-




ity Survey of the Annapolis Metropolitan Area, 1970."




     5>.   Gunpowder, Middle and Bird Rivers, 1970 - Limited




sampling by AFO for this area was done to further assess the




water quality of the upper reaches of the Chesapeake Bay.  Nu-



trients, dissolved oxygen, carbon, chlorophyll £ and bacter-




iological analyses were made on samples.




B.   General Remarks




     The purpose and conduct of the individual surveys varied




considerably; consequently, the parameters measured differed



among surveys.

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C.   Sampling  Procedures




     Samples were  obtained by  one  of  two methods:




     1.    In shallow water when  small boat was used by field




crew,  samples  were obtained by dipping a plastic bucket  or




large  funnel into  the river water  with a minimum of agitation.




Samples were retained in plastic containers.  Dissolved  oxygen




(DO) samples were  obtained by  siphoning from  the bucket  or by




attaching  a tube to the funnel outlet and extending it to the




bottom of  a conventional 300 ml  DO bottle.  The bottle was




overfilled twice without excessive agitation, and the  DO fixed.




Temperature was measured in the  dipped bucket immediately af-




ter sampling.




     2.    In deeper water, samples were obtained using a small




submersible pump attached to a wire cable calibrated in  feet.




The pump was lowered to the desired depth and allowed  to run




for two minutes before receiving samples in plastic containers.




Dissolved  oxygen (DO) samples were obtained directly from the



pump outlet extending to the bottom of a conventional  300 ml



DO bottle.  The sample was allowed to overflow the bottle sev-




eral times and fixed.  All samples were immediately stored on



ice and analyses started upon return to the laboratory, gener-




ally within two hours of sampling.




     Bacteriological samples were taken from surface waters



directly into a sterile 160 ml prescription bottle.

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D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury




thermometer inserted into the sample container immediately




upon collection.



     2.   Water temperature was read from a Beckman Salin-




ometer.




     3.   Light extinction, in inches, was read with a 12"




(30 cm) white secchi disk.




     ii.   The pH measurements were made with a field pH meter.




     5.   Conductivity was read from a calibrated Beckman Sal-




inometer.




     6.   Salinity was determined with a calibrated Beckman




Salinometer.




     7.   Total Phosphorus




          Reference:  Menzel, D.W. and Corwin, N., 196?.  The




Measurement of Total Phosphorus in Seawater Based on the Lib-




eration of Organically Bound Fractions by Persulfate Oxidation.



Limonology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single



Solution Method for the Determination of Phosphate in Natural



Waters.  Analytica Chimica Acta, 27:  31-36.




          Total Phosphorus was determined after persulfate ox-




idation of the sample in an autoclave at 15> psi for 30 minutes.




The resultant ortho-phosphate was then determined colorimet-

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rically as the molybdenum-blue complex with the  optical den-




sity measured at 882 ran-.




     8.   Inorganic Phosphorus




          Reference:  Murphy, J. and  Riley, J.P.,  1962.   A




Modified Single Solution Method for the Determination  of Phos-




phate in Natural Waters.  Analytica Chimica Acta,  27:  31-36.




          Inorganic Phosphorus was determined by automation of




the above procedure using the Technicon "Auto Analyzer."   The




molybdenum-blue complex formed was determined colorimetrically




with the optical density measured at  885 mjj,.




     9.   Total Kjeldahl Nitrogen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Total Kjeldahl Nitrogen includes ammonia and organ-




ic nitrogen and was determined by the standard micro-kjeldahl




procedure.  The sample was digested in the presence  of strong




acid to convert the organic nitrogen  to ammonia.   The  ammonia




was then distilled, collected in boric acid solution,  nessler-




ized and determined colorimetrically.



     10.  Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea  Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined by  auto-

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mation of the above procedure using the Technicon  "Auto Anal-




yzer."  This procedure utilizes cadmium reduction  of nitrate




to nitrite and subsequent diazotization with sulfanilamide




and N-(l-naphthyl)-ethylenediamine dihydrochloride with the




optical density measured at 5>1|Q m|i.  The results were reported




as nitrogen.




     11.  Ammonia




          Reference:  Southeast Water Laboratory,  FWQA, Meth-




odology for the colorimetric determination of ammonia by the




phenol-hypochlorite reaction.




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 196°.




          Ammonia nitrogen was determined by automation of the




phenol-hypochlorite procedure as described in the  Southeast




Water Laboratory Methodology and later adopted as  the official




FWPCA procedure.  The intensity of the indophenol  blue color,




formed by the reaction of ammonia with alkaline phenol-hypo-




chlorite, was increased using sodium nitroprusside as an inten-




sifying agent.  The optical density was measured at 630 mn and




calculated as NH^-N.




     12.   Dissolved Oxygen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965-




          FWPCA Methods for Chemical Analysis of Water and

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Wastes, November  1969-



           Dissolved Oxygen was  determined by the azide modi-




fication  of  the basic Winkler method with the titration done




potentiometrically with a Fisher automatic "titralyzer."




      13.   Biochemical Oxygen Demand




           Reference:  Standard  Methods  for the Examination of




Water and Wastewater, 12 ed., 1965.




           The Biochemical Oxygen Demand was determined by the



azide modification of the basic Winkler method with the titra-




tion  done potentiometrically with a Fisher automatic "titraly-




zer." The samples as received  were  diluted if necessary and




transferred  to standard 300 ml  BOD bottles in triplicate.   One




initial DO and two final DO determinations were used through-




out.   Incubation was started immediately at 206C and continued




for five  days after which they  were  titrated.




      lU.   Total Organic  Carbon




           Reference:  Beckman Instruments,  Bulletin 1|.059.



           FWPCA Methods  for Chemical Analysis  of Water and




Wastes, November 1969.




           Total Organic  Carbon  was determined  with  a Dow-Beck-




man Carbonaceous Analyser after the sample  had been purged with




nitrogen gas for five minutes.




     15.    Total Carbon




          Reference:  Beckman Instruments,  Bulletin ij.0f>9.

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          Total Carbon was determined with a Dow-Beckman Car-




bonaceous Analyser using the sample as received.




     16.  Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fish-




eries Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a_ was determined by extraction of milli-




pore filtered samples in 90$ acetone and read spectrophoto-




metrically.




     17.  Coliform



          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.



          Coliform population was determined using the 5 tube-




3 dilution Multiple-Tube Fermentation Technique.  Lauryl sul-




fate tryptose broth was used for the presumptive test with in-




cubation at 35>e-0.5>°C.  Brilliant green lactose bile broth was




used for the confirmatory test with incubation at 35°-0.!?eC.




The results were reported as the Most Probable Number  (MPN).




     18.  Fecal Coliform



          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          Water Pollution Control Research Series, WP-20-3.




          Fecal Coliform population was determined using the




5 tube-3 dilution Multiple-Tube Fermentation Technique.  Lauryl

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sulfate tryptose broth was used for the presumptive test with




incubation at 35°-0.5°C.  EC medium was used for the confirm-




atory test with air incubation at lj5-5°-0.5eC.  The results




were reported as the Most Probable Number  (MPN).




     19.  Metals




          Reference:  EPA Methods for Chemical Analysis of




Water and Wastes, 1971.




          Metals in solution were determined by atomic ab-




sorption spectroscopy.

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                                                                  10





                    II STATION LOCATIONS






 Bush River, Romney Creek, Spesutie Narrows and Swan Creek






Station	Location	




   3                   Swan Creek, headwaters




   k                   Swan Creek, off Cedar Point




   5                   Swan Creek, mouth, Swan Creek Point




   8                   Spesutie Narrows, south end




   9                   Spesutie Narrows, mouth




  11B                  Sod Run Sewage Treatment Plant




  11A                  Romney Creek, headwaters




  11                   Romney Creek, outfall




  12A                  Romney Creek, downstream




  12                   Romney Creek, downstream from 12A




  15                   Romney Creek, mouth




  16                   Bush River, mouth




  17                   Bush River




  18A                  Bush River




  18                   Bush River




  19                   Bush River, Lauderick Creek




  20                   Bush River, south of railroad bridge

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                                                                  11
Station
                Chesapeake and Delaware Canal
Location
   1
   2
   3
   h
   $
   6
  11
Chesapeake City Bridge
Summit Bridge
Lorewood Grove
St. George's
Biddle Point
Pea Patch, RB Bell Buoy
Head of Bay Tribs, Station, Buoy  "N 26"
Station
                        Chester River
Location
   1
   2
   3
   k
   5
   6
   7
   8
   9
Love Point - Bell Buoy
Long Point - Buoy "9"
Boxes Point - Buoy  "ill"
Nichols Run - Buoy  "16"
Corsica River - Buoy "ij."
Melton Point - Buoy "28"
Chestertown Beacon
Possum Point - Buoy "ItV
Crumpton - Buoy "£8"

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                                                                   12
Station
                     Severn River - 1970
Location
  S 1




  S 2




  S 3



  S li




  S 5



  S 6




  S 7



  S 8




  S 9
Indian Landing




Mathews Point




Rock Cove




Cedar Point




Middle Round Bay




Brewer Point




Route 50 Bridge




Naval Academy, Nun  "23"




Horn Point, Fl "11"
Station
Severn River - 1971



Location
  CON




  5 A




  5 B




  5 E




  5 F




  ? G




  5 H




  5 I




  5 K




  5 L
Old Severn River Bridge  (Control Station)



Greenbury Point




Back Creek, Chinks Point




New Severn River Bridge, Route 2




Arnold Point and Brewer Point, Buoy  "5"



Round Bay-



Little Round Bay




Cedar Point




Rock Cove




Indian Village, Mathews Point

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                                                                   13





              Gunpowder, Middle and Bird Rivers






Station	Location	



  M 1                    Middle River, Clark Point



  M 2                    Middle River, Wilson Point, Qk Fl R



  M 3                    Frog Mortar Creek, #2



  M k                    Middle River, Bowleg Point, Qk Fl "2"



  G 1                    Bay, channel, Weir Point



  G 2                    Carroll Point, Fl "$>"



  G 3                    Battery Point, Fl "11"



  G k                    Maxwell Point, Fl "13"



  G £                    Oliver Point, Fl "l£"




  G 6                    Mouth to Bird River, C  "1"



  G 7                    Mouth Gunpowder Falls



  G 8                    Bird River, N "8"



  G 9                    Bird River, C "13"



  G 10                   Bird River, headwaters



  G 11                   Gunpowder Falls, headwaters

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  Ill SURVEY RESULTS
         1971
     SEVERE RIVER
ANNAPOLIS FIELD OFFICE
                                                                25
Sa-riple
'/"jjuDe.'
71032901
71032902
71032903
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71032905
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7103 907
71032908
71032909
71032910
Date
Sample
Taken
3-29
3-29
3-29
3-29
3-29
3-29
3-29
3-29
3-29
3-29
Time Secchi Salinoswter
Sample Disk Cond Salinity Water
Taken Inches tunhos o/oo Temp °C
1118
1110
1055
1125
1135
liko
ii!;5
1157
1200
1210
DO
mg/1
Fecal
Coliform
MPN 100 ml
Station CON - Old Severn River Bridge
60
6.44 5.76 5.49
Station 5 A - Greenbury Point
60 6.1U 5-51 6.36
Station 5 B - Back Creek, Chinks Point
65
Station 5
U8
Station 5 F
60
72
S
96"
72
60
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36
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E - New Severn River Bridge, Route 2
6.U2 5.78 5.44
- Arnold Point and Brewer Point, Buoy "5"
6.9k 6.22 5-90
Station 5 G - Round Bay
7.55 6.62 6.30
tation 5 H - Little Round Bay
7.69 6.80 6.48
Station 51- Cedar Point
7.43 6.53 6.62
Station 5 K - Hock Cove
7.00 6.12 6.88
5 L - Indian Village, Mathews Point
2.86 2.30 8.50
11. 42
11.57
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11.90
12.11;
11.63
11.57
11.42
11.36
10.56
20
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GUNPOWDER, MIDDLE. BIRD. AND BUSH   RIVERS.
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                                               8-POSSUM POINT. BUOY 44
CHESTER  RIVER
                                              SCALE IN MILES

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                SPECIAL WATER QUALITY SURVEYS OF THE
                         POTOMAC RIVER BASIN

                       ANACOSTIA ESTUARY 1970

                           WICOMICO RIVER,

                  ST. CLEMENT AND BRETON BAYS 1971

                          OCCOQUAN BAY 1971

                             DATA REPORT

                              Number 33
    Annapolis Field Office
          Region III
Environmental Protection Agency

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                  Annapolis Field Office
                        Region III
              Environmental Protection Agency
                        Data  Report


                         Number 33
                   SPECIAL WATER  QUALITY

                      SURVEYS OF THE

                    POTOMAC RIVER BASIN

                  ANACOSTIA ESTUARY 1970

                     WICOMICO RIVER,

             ST. CLEMENT AND BRETON BAYS 1971

                     OCCOQUAN BAY 1971
                          Staff

   James ¥. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn P. McPherson, Technician

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                     TABLE OF CONTENTS
                                                  Page




  I  INTRODUCTION	  1




 II  STATION LOCATIONS	  9




III  SURVEY RESULTS	11




 IV  MAP	 appendix  i

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                       I INTRODUCTION








A.   Purpose and Scope



     The Annapolis Field Office,  Environmental Protection




Agency, Region III conducted special water quality  surveys as




presented in this report.



     1.   Anacostia Estuary, 1970 - Monthly  sampling runs were




made of this area to monitor water quality.  Some baseline data




may be found in "Preliminary Analyses of the Wastewater and




Assimilation Capacities of the Anacostia Tidal River System",




Technical Report No. 39.  This report includes a  5-day inten-




sive, April, 1967, and a 2-day special survey on  Kingman Lake,




June, 1969.  Analyses made on the 1970 samples were for nutrients,




dissolved oxygen, biochemical oxygen demand, carbon, chloro-




phyll £, turbidity, total suspended solids and bacteriological




content.




     2.   Wicomico River, St. Clement and Breton  Bays, 1971 -



A survey of these areas was made at the suggestion  of our




Regional Enforcement Division due to imminent closing of pro-



ductive shellfish harvesting beds.  In addition to  bacterio-




logical analyses, parameters measured were nutrients, dissolved




oxygen, carbon and chlorophyll a..




     3.   Occoquan Bay, 1971 - In cooperation with  the Occoquan-



Woodbridge Sanitary District, the Annapolis Field Office con-

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                                                                  2




ducted a survey of wastewater treatment for discharge into




Potomac estuary from the Occoquan watershed.  Bay samples




were analyzed over a 3-month period for major nutrients.




B.   General Remarks




     These special studies of specific areas of the Potomac




River basin serve as a baseline for water quality evaluation.




C.   Sampling Procedures




     Samples for chemical analysis were obtained by dipping a




plastic bucket into the river water with a minimum of agitation.




The water sample was then transferred to a one quart plastic




container.  Dissolved oxygen (DO) samples were obtained by




siphoning from the bucket through plastic tubing extended to




the bottom of a conventional 300 ml DO bottle.  The bottle was




overfilled twice without excessive agitation and the DO fixed




immediately.  Bacteriological samples were taken from surface




waters directly into a sterile 160 ml prescription bottle.




All samples were stored on ice.  Analyses were started immed-



iately on return to the Annapolis Field Office.




D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury



thermometer inserted into the sample container immediately



upon collection.




     2.   Water temperature was read from a Beckman Salinometer.




     3.   Conductivity was read from a calibrated Beckman



Salinometer.

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     U.   Salinity was determined with a calibrated Beckman




Salinoraeter.



     £.   Light extinction, in inches, was read with a 12"




(30 cm) white secchi disk.




     6.   Total Phosphorus




          Reference:  Menzel, D.W. and Corwin, N., 1965.  The




Measurement of Total Phosphorus in Seawater Based on the




Liberation of Organically Bound Fractions by Persulfate Oxi-




dation.  Limnology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chiraica Acta, 27:  31-36.




          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at 15 psi for 30




minutes.  The resultant ortho-phosphate was then determined




colorimetrically as the molybdenum-blue complex with the opti-



cal density measured at 882 mjj,.




     7.   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley, J.P., 1962.  A



Modified Single Solution Method for the Determination of Phos-



phate in Natural Waters.  Analytica Chimica Acta, 27:  31-36.




          Inorganic Phosphorus was determined by automation




of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-

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rically with the optical density measured at 885 up.




     8.   Total Kjeldahl Nitrogen



          Reference:  Standard Methods for the Examination  of




Water and Wastewater, 12 ed., 1965 and 13 ed., 1971.



          Total Kjeldahl Nitrogen includes ammonia and  organic




nitrogen and was determined by the standard micro-kjeldahl  pro-




cedure.  The sample was digested in the presence of strong  acid




to convert the organic nitrogen to ammonia.  The ammonia was




then distilled, collected in boric acid solution, nesslerized




and determined colorimetrically.




     9.   Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water Analysis,




J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries Re-




search Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined  by auto-




mation of the above procedure using the Technicon "Auto Analyzer."




This procedure utilizes cadmium reduction of nitrate to nitrite



and subsequent diazotization with sulfanilamide and N-(l-naphthyl)-



ethylenediamine dihydrochloride with the optical density measured



at 5IjO mjj..  The results were reported as nitrogen.




     10.  Ammonia




          Reference:  EPA Methods for Chemical Analysis of Water




and Wastes,  1971.

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          Ammonia was determined by automated phenol-hypo-




chlorite procedure.  The intensity of the indophenol blue




color, formed by the reaction of ammonia with alkaline phenol-




hypochlorite, was increased using sodium nitroprusside as an




intensifying agent.  The optical density was measured at 630 m)-i




and calculated as NHo-N.




     11.  Dissolved Oxygen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 13 ed., 1971.




          EPA Methods for Chemical Analysis of Water and Wastes,




1971.




          Dissolved Oxygen was determined by the azide modi-




fication of the basic Winkler method with the titration done




potentiometrically with a Fisher automatic "titralyzer."




     12.  Biochemical Oxygen Demand




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 13 ed., 1971.




          The Biochemical Oxygen Demand was determined by the




azide modification of the basic Winkler method with the titra-




tion done potentiometrically with a Fisher automatic "titraly-




zer."  The samples as received were diluted if necessary and




transferred to standard 300 ml BOD bottles in triplicate.  One




initial DO and two final DO determinations were used through-




out.  Incubation was started immediately at 209C and continued

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for five days after which they were titrated.




     13.  Total Organic Carbon




          Reference:  Beckman Instruments, Bulletin Ij.059-




          EPA Methods for Chemical Analysis of Water and Wastes,




1971.



          Total Organic Carbon was determined with a Dow-Beckman




Carbonaceous Analyzer after the sample had been purged with




nitrogen gas for five minutes.




     Ik-  Total Carbon




          Reference:  Beckman Instruments, Bulletin i|0f>9.




          Total Carbon was determined with a Dow-Beckman




Carbonaceous Analyzer using the sample as received.




     15.  Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Analysis,




J.D.Hc Strickland and T.R. Parsons, Bulletin 16?, Fisheries




Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a was determined by extraction of milli-



pore filtered samples in 90$ acetone and read spectrophoto-



metrically.




     16.  Turbidity




          Reference:  EPA Methods for Chemical Analysis of Water




and Wastes, 1971.




          Turbidity was determined with a Hach photoelectric




nephelometer, calibrated in Jackson Turbidity Units.

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     17.  Coliform



          Reference:  Standard Methods for the Examination of




Water and Wastewater, 13 ed., 1971.



          Coliform population was determined using the 5 tube-




3 dilution Multiple-Tube Fermentation Technique.  Lauryl sul-




fate tryptose broth was used for the presumptive test with




incubation at 3B°-C).^°G.  Brilliant green lactose bile broth




was used for the confirmatory test with incubation at 35°-0.5>*C.




The results were reported as the Most Probable Number (MPN).




     18.  Fecal Coliform




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 13 ed., 1971.




          Water Pollution Control Research Series, WP-20-3.




          Fecal Coliform population was determined using the




5 tube-3 dilution Multiple-Tube Fermentation Technique.  Lauryl



sulfate tryptose broth was used for the presumptive test with




incubation at 3^9±0.5°C.  EC medium was used for the confirm-



atory test with air incubation at l|5.5e±0.£9C.  The results




were reported as the Most Probable Number (MPN).



     19.  Nonfiltrable Residue (Suspended Solids)




          Reference:   EPA Methods for Chemical Analysis of



Water and Wastes, 1971.




          The Nonfiltrable Residue was determined by filtering




a known volume of sample.  A predried and weighed Gelman Type A

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glass fiber filter was used.  The filter and its contents




were then dried in an oven at 105°C, cooled and reweighed.




The gain in weight represents Nonfiltrable Residue.

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                   II STATION LOCATIONS




Station               Location
                     ANACOSTIA RIVER




 AA 1                 Off Haines Point




 AA 2                 South Capital Bridge




 AA 3                 Sousa Bridge




 AA k                 Benning Road - M




 AA 5>                 Benning Road - Kingman




 AA 6                 Route ^O Bridge




 AA 7                 Marina - Channel




 AA 8                 Northwest Branch - Route 1




 AA 9                 Bortheast Branch - Decatur Street






        WICOMICO RIVER, ST. CLEMENT AND BRETON BAYS




 19-B                 ¥icomico River, Headwaters




 19-A                 Chaptico Bay




 19-1                 ¥icomico River, Beacon "16 ¥"




 19-2                 Wicomico River, Can "7 ¥"




 19                   Wicomico River, Bluff Point




 19-3                 Wicomico River, Nun "2 ¥"




 20-1                 Breton Bay, Headwaters, Fl "R 8"




 20-2                 Breton Bay, Nun "6"




 20-E                 St.  Clements Bay,  Mid-channel




 20-3                 St.  Clements Bay,  Headwaters, Can "3"




 20-k                 St.  Clements Bay,  Shipping Point

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                                                                  10






Station	Location	




                       OCCOQUAN BAY



  1                   Occoquan Water Treatment Plant




  2                   Lorton Creek




  3                   Occoquan Sewage Treatment Plant




  it                   Belmont Sewage Treatment Plant




  £                   Featherstone Sewage Treatment Plant



  6                   Neabsco Sewage Treatment Plant




  7                   VEPCO




  8                   South Channel




  9                   Middle Channel




 10                   North Channel

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  Ill SURVEY RESULTS
         1971
     OCCOQUAN BAY
ANNAPOLIS FIELD OFFICE
                                                                  1U
Sample
Number

71080516
2653
090201
1001
2315
100101
0701
1101*149

71080517
265U
090202
1002
2316
100102
0702
1101*50

71080518
2655
090203
1003
2317
100103
0703
uol*5i

71080519
2656
0902 ok
WOk
2318
100101*
07 Ok
1101*52

71080520
2657
090205
1005
2319
100105
0705
1101*53

71080521
2658
090206
1006
2320
AFO
Received
Sample

8-05
8-26
9-02
9-09
9-23
9-30
10-07
11-01*

8-05
8-26
9-02
9-09
9-23
9-30
10-07
11-01*

8-C5
8-26
9-02
9-09
9-23
9-30
10-07
11-01*

8-05
8-26
9-02
9-09
9-23
9-30
10-07
u-ol*

8-05
8-26
9-02
9-09
9-23
9-30
10-07
ll-Ok

8-05
8-26
9-02
9-09
9-23
Water
Temp
°C

2k.kO
22.20
23-30
26.70
21.10
21.10
20.00


26.10
23-30
25.60
26.70
22.20
22.20
19.1*0


26.10
23.30
25.60
26.70
20.60
23.30
20.60


26.70
23.30
2k.kO
27.20
20.60
23.30
19. kO


26.10
23-30
23.30
26.10
20.00
23.30
21.10


25.60
21*. 1*0
21.10
26.70
20.60
Total P
POJ|
mg/1
Station
.21*1*
.136
.185
.938
.173

.138
.230

.685
.1*75
.1*06
.892
.281*

.251*
.253
Station
.655
.536
.81*2
1.056
.1(28

.1*60
.301
Station
1.390
1.280
2.281
1.121
1.035

.759
.716
Station 5
1.379
1.1*21
.91*7
1.862
1.57U

.821
.760
Station
1.001*
1.020
1.1*85
1.021
1.021*
Inorganic P
POJ;
mg/1
1 - Occoquan Water
.100
.QUO
.072
.335
.097
.061;
.062
.230
Station 2 - Lorton
.31*7
.252
.251*
.320
.205
.222
.100
.237
3 - Occoquan Sewage
.372

.508
.393
.295
.166
.263
.30k
k - Belmont Sewage
.566

1.085
.810
.805
1.990
.315
.1*63
TKN
mg/1 N
Treatment
.600
.71*0
.1*90
2.1*16
.1*68
.306
.568
1.110
Creek
1.1*67
1.008
.696
2.115
.1*73
.3k6
.265
.800
Treatment
1.333
.763
1.013
2.683
.690
.365
.329
.770
Treatment
2.085
1.195
1.592
1.21*7
1.002
.115
.890
1.060
N02+N03
mg/1
N03-N
Plant
.001
.169
.315
.001
.282
.306
.1*30
.293

.116
.181*
.kio
.001
.296
.31*6
.1*29
.318
Plant
.019
.11*2
.1*12
.001
.305
.365
.1*51*
.328
Plant
.013
.001
.069
.001
.001
.115
.001
.253
NH3
mg/1 N

.001
.001
.058
.050
.030
.016
.oil*
.078

.059

.261*
.009
.119
.01*6
.029
.093

.035

.585
.009
• 255
.029
.191
.120

.035
.322
.11*3
.009
.023
.91*7
.001
.066
TOG
mg/1

8.
5.

16.

6.



11.
7.

13.

6.



10.
6.

18.

6.



13.
13.

11*.

18.



75
21*

07

1*2



20
02

65

k2



51*
83

65

31



70
02

07

30


TC
mg/1


16

17

11*




20

11*

11*




19

19

11*




30

15

30




.1*0

.06

.78




.70

• 52

.78




.00

.52

.67




.69

.06

• 99


- Featherstone Sewage Treatment Plant
.568

.523
.935
.760
.517
.369
.532
6 - Neabsco Sewage
.1*1*3

.607
.585
.650
2 . 509
2.0149
.685
1.1*25
1.191
. 001
.913
.9iiO
Treatment
1.727
1.798
2.0i;3
1.871
1.1*03
.001
.001
.001
.001
.001
.001
.021*
.191*
Plant
.001
. 001
.077
.001
.001
.01*5
.322
.019
.009
.027
.001
.Oil*
.085

.01*9
.322
.053
.009
.027
20.
16.

12.

17.



10.
13.

16.

51*
27

65

73



07
87

39


28

13

30




21*

17


.15

.33

.1*2




.81

.71


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15
Sample
Number

71100106
0706
1101*51*

71080522
2659
090207
1007
2321
100107
0707
1101*55

71080523
2660
090208
1008
2322
100108
0708
110156

71080521*
2661
090209
1009
2323
100109
0709
1101*57

71080525
2662
090210
1010
2321*
100110
0710
1101*58
AFO
Received
Sample

9-30
10-07
11-01*
Water Total
Temp POj,
*C mg/1
Station
22.20
20.00

6 -

.811*
.1*90
P Inorganic P
POI,
mg/1
TKN
mg/1 N
Neabsco Sewage Treatment Plant
1.110
.321
.367
.232
.877
.690
Station 7 - VEPCO
8-05
8-26
9-02
9-09
9-23
9-30
10-07
ll-0/i

8-05
8-26
9-02
9-09
9-23
9-30
10-07
11-Oli

8-05
8-26
9-02
9-09
9-23
9-30
10-07
11-01*

8-05
8-26
9-02
9-09
9-23
9-30
10-07
11-OU
32.20
29.1>0
32.20 1
3l*.l*0 1
30.60
30.60
30.00


26.70
25.60 1
25.60 1
26.10 1
23.90
22.80
20.00


26.70
25.60 1
25.60 1
26.70 1
23.90
22.80
20.60


2k. kO 1
25.60 1
2k. kO 1
26.70
23.30
21.10
21.10

.703
.852
.076
.1*21*
.756

.655
.771

.765
.2la
.883
.907
.718

.761*
.869

.790
.178
.751*
.278
.608

.618
.391*

.092
.118
.223
.976
.606

.651
.1*03
.1*23
.1*01
.1*02
.718
• Slli
.333
.326
.336
Station 8 - South
• U75
.1*17
.1413
.59/1
.570
.379
.393
• Ii5l
Station 9 - Middle
.1*81* "
.1*07
.1*11*
• 50li
.1*58
.301
.326
.1*23
Station 10 - North
.542
.393
.157
.1*65
.1*38
.1*33
.388
.288
1.091
1.770
1.81*8
1.859
.813
.1*85
.771;
.680
Channel
1.000
3.613
5.166
5.155
.668
.722
.619
.770
Channel
1.185
2.761
5.890
3.006
.618
.833
.503
. 930
Channel
1.158
2.01*3
2.11*9
2.59U
.6kO
.001
.800
.700
N02+N03
mg/1
N03-N
- Continued
.232
.023
.51*5

.016
.001
.001
.001
.599
.W5
.623
.871*

.669
.079
.001
.001
.939
.722
.623
.920

1.000
.097
.001
.001
.937
.833
.713
.920

1.11*7
.001
.001
.001
.852
.001
.828
.667
NH3
mg/1 N

.083
.Oil*
.036

.062
.322
.019
.009
.023
.001
.Oil*
.127

.032
.322
.018
.009
.022
.001
.Oil*
.280

.031*
.322
.023
.009
.022
.015
.Oil*
.31*6

.001
.322
.Oil*
.009
.023
.016
.71*0
.06]
TOG
mg/1

13.1*9



8.30
10.11*

11*. 1*2

6.99



8.20
9.21*

19.53

10.00



7.35
lli.l*l

13.59

9.55



13.37
11.07

13.59

12.90


TC
mg/1

26.08




27.08

11*. 97

19.1*7




27.88

26.31

22.29




29.35

20.52

23.09




31-38

11*. 58

25.13



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                                     NORTHEAST BRANCH -DECATUR STREET-AA9
                                   NORTHWEST BRANCH-ROUTE I-AA8
                BENNING ROAD- KINGMAN-AA5
                                   AA 3-SOUSA BRIDGE
           AA 2 - SOUTH CAPITAL  BRIDGE
AA I - OFF HAINES POINT
                   ANACOSTIA  ESTUARY
                              1970

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POTOMAC
                                                                              WICOMICO RIVER,
                                                                            r
19-3-WtCOMICO RIVER,
   NUN 2W
                          ST. CLEMENTS BAY,
                          MID-CHANNEL
                     RIVER
                                                     WICOMICO  RIVER.     BRETON  BAY
                                                           AND  ST.  CLEMENTS  BAY

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                              -I —OCCOQUAN  WATER TREATMENT  PLANT
OCCOQUAN     BAY
                                    2- LORTON  CREEK




                                   3-OCCOQUAN  SEWAGE TREATMENT  PLANT
                                                          BELMONT   BAY
                                                  4— 6ELMONT SEWAGE1 TREATMENT  PLANT





                                       OCCOQUAN    BAY
                                           FEATHERSTONE  SEWAGE
                                           TREATMENT PLANT
                                 6 —NEABSCO  SEWAGE  TREATMENT PLANT
                                               NORTH  CHANNEL—10	
                                                      MIDDLE  CHANNEL
                          6-SOUTH CHANNEL

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                        WATER QUALITY SURVEY

                               OF THE

                           PATUXENT RIVER

                                1970


                             DATA REPORT

                              Number  3h
    Annapolis Field Office
          Region III
Environmental Protection Agency

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                 Annapolis Field Office
                       Region III
             Environmental Protection Agency
                    1970 Data Report


                        Number 3k
                  WATER QUALITY SURVEY

                         OF THE

                     PATUXENT RIVER
                         Staff:

   James ~W. Marks, Chief, Analytical Laboratory Section
Orterio Villa, Jr., Chief, Development Laboratory Section
              Anna R. Favorite, Statistician
              Evelyn  P. McPherson,  Technician

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                     TABLE OF CONTENTS
                                                    Page




  I  INTRODUCTION	   1




 II  STATION LOCATIONS	   6




III  SURVEY RESULTS	   8




 IV  MAP	appendix   i

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                      I INTRODUCTION






A.   Purpose and Scope



     During the year of 1970 the Annapolis Field Office, Region




III, Environmental Protection Agency continued surveys of the




estuarine portion of the Patuxent River.  The purpose of this




monitoring was to continue updating existing conditions and




provide data for future model application.




B.   General Remarks




     The estuary was sampled monthly from February through




November.  One sampling run was made on the Upper and Little




Patuxent River on January 20.




C.   Sampling Procedures




     Samples for chemical analyses were obtained by dipping a




plastic bucket into the river water with a minimum of agitation.




The water sample was then transferred to a one-quart plastic




container.  Dissolved oxygen (DO) samples were obtained by



siphoning from the bucket through plastic tubing extended to



the bottom of a conventional 300 ml DO bottle.  The bottle




was overfilled two volumes without excessive agitation, and




the DO fixed immediately.  Samples were stored on ice and



analyses started on return to the Annapolis Field Office.




D.   Measured Parameters and Analytical Methods




     1.   Water temperature was determined using a mercury

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thermometer inserted into the sample container immediately




upon collection.




     2.   Total Phosphorus



          Reference:  Menzel, D.W. and Corwin, N., 1965-  The




Measurement of Total Phosphorus in Seawater Based on the Lib-




eration of Organically Bound Fractions by Persulfate Oxidation.




Limnology and Oceanography, 10:  280-282.




          Murphy, J. and Riley, J.P., 1962.  A Modified Single




Solution Method for the Determination of Phosphate in Natural




Waters.  Analytica Chimica Acta, 27:  31-36.




          Total Phosphorus was determined after persulfate




oxidation of the sample in an autoclave at l£ psi for 30




minutes.  The resultant ortho-phosphate was then determined




colorimetrically as the molybdenum-blue complex with the op-




tical density measured at 882 up.




     3.   Inorganic Phosphorus




          Reference:  Murphy, J. and Riley, J.P., 1962.  A




Modified Single Solution Method for the Determination of Phos-



phate in Natural Waters.  Analytica Chimica Acta, 27:  31-36.




          Inorganic Phosphorus was determined by automation



of the above procedure using the Technicon "Auto Analyzer."




The molybdenum-blue complex formed was determined colorimet-




rically with the optical density measured at 885 mpi.

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     k>   Total Kjeldahl Nitrogen



          Reference:  Standard Methods for the Examination  of




Water and Wastewater, 12 ed., 196$.




          Total Kjeldahl Nitrogen includes ammonia and  organic




nitrogen and was determined by the standard micro-kjeldahl  pro-




cedure.  The sample was digested in the presence  of  strong  acid




to convert the organic nitrogen to ammonia.  The  ammonia was




then distilled, collected in boric acid solution, nesslerized




and determined colorimetrically.




     5.   Nitrate + Nitrite




          Reference:  A Practical Handbook of Sea Water Anal-




ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries




Research Board of Canada, Ottawa, Canada, 1968.




          Nitrate plus nitrite nitrogen was determined  by




automation of the above procedure using the Technicon "Auto




Analyzer."  This procedure utilizes cadmium reduction of



nitrate to nitrite and subsequent diazotization with sulfan-




ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride  with




the optical density measured at 5^.0 m(i.  The results were



reported as nitrogen.



     6.   Ammonia




          Reference:  Southeast Water Laboratory, FWQA,




Methodology for the colorimetric determination of ammonia




by the phenol-hypochlorite reaction.

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          FWPCA Methods for Chemical Analysis  of Water and




Wastes, November 1969.




          Ammonia nitrogen was determined by automation  of




the phenol-hypochlorite procedure as described in the South-




east Water Laboratory Methodology and later adopted as the




official FWPCA procedure.  The intensity of the indophenol




blue color, formed by the reaction of ammonia  with alkaline




phenol-hypochlorite, was increased using sodium nitroprusside




as an intensifying agent.  The optical density was measured




at 630 m[A and calculated as NH3~N.




     7.   Dissolved Oxygen




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 1965.




          FWPCA Methods for Chemical Analysis  of Water and




Wastes, November 1969.




          Dissolved Oxygen was determined by the azide modi-




fication of the basic Winkler method with the  titration  done




potentiometrically with a Fisher automatic "titralyzer."




     8.   Biochemical Oxygen Demand




          Reference:  Standard Methods for the Examination of




Water and Wastewater, 12 ed., 196£.




          The Biochemical Oxygen Demand was determined by the




azide modification of the basic Winkler method with the  titra-




tion done potentiometrically with a Fisher automatic "titralyze--.'

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The samples as received were diluted if necessary and trans-




ferred to standard 300 ml BOD bottles in triplicate.  One




initial DO and two final DO determinations were used through-




out.  Incubation was started immediately at 20°C and continued




for five days after which they were titrated.




     9.   Total Organic Carbon




          Reference:  Beckman Instruments, Bulletin 1^059•




          FWPCA Methods for Chemical Analysis of Water and




Wastes, November 1969.




          Total Organic Carbon was determined with a Dow-




Beckman Carbonaceous Analyzer after the sample had been purged




with nitrogen gas for five minutes.




    10.   Chlorophyll a




          Reference:  A Practical Handbook of Sea Water Analy-




sis, J.D.H. Strickland and T.R. Parsons, Bulletin 167, Fish-




eries Research Board of Canada, Ottawa, Canada.  1968.




          Chlorophyll a was determined by extraction of milli-




pore filtered samples in 90$ acetone and read spectrophoto-




metrically.

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                   II STATION LOCATIONS




                     Patuxent Estuary-




Station            Location
 E 1               Route 50 Bridge




 E 2               Queen Anne's Bridge




 E 3               Bell's Junk Yard




 E k               Trailer Court




 E 5               Wayson's Corner, Route k Bridge




 E 5A              Western Branch




 E ^B              Western Branch, Sewage Treatment Plant




 E 6               Mouth of Western Branch




 E 6A              Middle of Jug Bay, Channel




 E 7               Mouth of Lyon's Creek




 E 8               Nottingham




 E 9               Lower Marlboro, opposite wharf




 E 10              High Power Lines




 E 11              Halfway between Trueman Point and Deep Landing




 E 12              500 yards east of PEPCO Canal




 E 12A             Mouth of PEPCO Canal




 E 13              Chalk Point




 E ll|.              Benedict Bridge Channel




 E 15              Sheridan Point, Buoy 21

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                       Patuxent  River

 Station        Location
  -x- 1;           Upper Patuxent,  Benedict Bridge

 -;B;- 5           Upper Patuxent,  Maryland Route 1; Bridge

    7           Upper Patuxent,  Maryland Route 211; Bridge

•Jf-x-x- 8           Upper Patuxent,  John  Hanson Highway,  Route 5>0 Bridge

   11           Upper Patuxent,  Bridge  behind Bowie Racetrack

   III           Upper Patuxent,  Baltimore-Washington Expressway Bridge

   15           Upper Patuxent,  Maryland Route 198 Bridge

  L 2           Little Patuxent, Maryland Route k^k Bridge

  L 3           Little Patuxent, Bridge upstream of Woodwardville

  L k           Little Patuxent, Old  Forge Bridge

  L 5>           Little Patuxent, Maryland Route 198,  Simmons Bridge

  L 6           Little Patuxent, Baltimore-Washington Expressway Bridge

  L 7           Little Patuxent, U.S. Route 1 Bridge,  Savage
  -x-  Same as Chesapeake Bay input  station #CB  11
 -x-x-  Same as Chesapeake Bay input  station #CB  10
-x-x-x-  Same as Chesapeake Bay input  station #CB  9
     (See Data Report Number 31 for further  data (1969-1970) on
      these three stations.)

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                          - U S  ROUTE I  «R TOE 5AVAGE
                            -L5-MARYLAND  ROUTE 198.  SIMMONS BRIDGE
                            .^ — L4-OLD FORGE  BRIDGE
                                  I  '-PRIDGE UPSTREAM nf  WOODWAR D VI LIE
                                        -—L2- MARYLAND  ROUTE 424 BRIDGE.
                                          7-MARVL ,NP POUTE 214 BRIDGE
                                                     ANME S BRIDGE
                                                                  KOu11  ' BRIDGE
                                             EC-MOUTH OF WESTERN BRANCH
                                                E6A-M1DDLE OFJUG BAV. CHANNEL
                                                            CREEK
                                                EI2- 500 YARDS EAST OF  PEPCO  CANAL
                                                          OINT
PATUXENT  RIVER  SURVEY
              1970
           SCALE IN MILES

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