GUIDANCE MANUAL FOR THE MONITORING
AND REPORTING REQUIREMENTS OF THE
  NPDES MULTI-SECTOR STORM WATER
         GENERAL PERMIT

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency


TABLE OF CONTENTS

1.     INTRODUCTION	1

2.     OVERVIEW OF MONITORING REQUIREMENTS	3
      2.1    Types of Monitoring	3
      2.2    Sampling Guidance	3
      2.3    Sample Type  	3
      2.4    Sample Frequency  	3

3.     VISUAL EXAMINATION REQUIREMENTS	4
      3.1    When to Perform Visual Examinations	4
      3.2    Exceptions	4
      3.3    Reporting	5
      3.4    Interpreting Visual Examination Results	5
      3.5    Representative Discharge	5
      3.6    Sampling Waivers	5

4.     ANALYTICAL  MONITORING REQUIREMENTS	6
      4.1    Parameters to Monitor	6
      4.2    When to  Sample	6
      4.3    Interpreting Analytical Monitoring Results	7
      4.4    Representative Discharge	7
      4.5    Sampling Waivers	7
      4.5.1   Facilities Transferring from the Baseline to the Multi-Sector Permit  	8
      4.6    Sampling Exemption - Alternative Certification  	8
      4.7    Step-By-Step Instructions for Recording Analytical Monitoring Results	12

5.     COMPLIANCE MONITORING REQUIREMENTS	15
      5.1    Step-By-Step Instructions for Recording Compliance Monitoring Results	16

6.     STATE-SPECIFIC REQUIREMENTS	20
      6.1    Alaska  	20
      6.2    Arizona  	20
      6.3    Guam	20
      6.4    New Mexico	21
      6.5    Texas	23

7.     WHERE TO SEND DISCHARGE MONITORING REPORTS	24
January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency
LIST OF EXHIBITS

EXHIBIT 1
     AREAS WHERE THE MULTI-SECTOR GENERAL PERMIT IS APPLICABLE	2
EXHIBIT 2
     INDUSTRY SECTORS / SUB-SECTORS SUBJECT TO ANALYTICAL
     MONITORING UNDER THE MULTI-SECTOR GENERAL PERMIT	9
EXHIBIT 2.1
     INITIAL MONITORING REQUIREMENTS FOR STORM WATER DISCHARGES
     FROM WASTE ROCK AND OVERBURDEN PILES RESULTING FROM MINING
     ACTIVITY AT ACTIVE ORE MINING OR DRESSING OPERATIONS 	10
EXHIBIT 2.2
     ADDITIONAL MONITORING REQUIREMENTS (TWICE ANNUAL)
     FOR STORM WATER DISCHARGES FROM WASTE ROCK AND OVERBURDEN
     PILES RESULTING FROM MINING ACTIVITY AT ACTIVE ORE MINING OR
     DRESSING OPERATIONS BASED ON TYPE OF ORE HANDLED	10
EXHIBIT 3
     ANALYTICAL MONITORING PERIODS AND REPORTING DEADLINES  	11
EXHIBIT 4
     PARAMETER BENCHMARK VALUES FOR ANALYTICAL MONITORING	11
EXHIBIT 5
     SAMPLE DMR FOR REPORTING ANALYTICAL MONITORING RESULTS	14
EXHIBIT 6
     DISCHARGES SUBJECT TO COMPLIANCE MONITORING UNDER EFFLUENT
     LIMITATIONS GUIDELINES	16
EXHIBIT 7
     SAMPLE DMR FOR REPORTING COMPLIANCE MONITORING RESULTS	19
EXHIBIT 8
     EPA REGIONAL MAILING ADDRESSES AND PHONE NUMBERS	24
                                                                   January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

1.     INTRODUCTION

The U.S. Environmental Protection Agency (EPA) issued the Multi-Sector Storm Water General Permit
(MSGP) for storm water discharges associated with most industrial activities on September 29, 1995 (60 FR
51108). The general permit covers industrial activities in states and territories that have not been authorized
to run the National Pollutant Discharge Elimination System (NPDES) general permitting program.  See
Exhibit 1 for a list of these areas.  Technical corrections to the MSGP were made on February 9, 1996 (61 FR
5248) and February 20, 1996 (61 FR 6412), and the permit was finalized for Guam on September 24, 1996
(61 FR 50020). On September 30, 1998, EPA published a modification to the MSGP, which expanded permit
coverage to industries previously ineligible for MSGP coverage. For purposes of this guidance manual,
"MSGP" refers to the multi-sector general permit, inclusive of the latest modification.

This guidance will assist facilities subject to monitoring and reporting requirements under the MSGP in
complying with their visual, analytical, and compliance monitoring requirements, and ensure proper reporting
of laboratory results.

This guidance document:

              lists the industrial activities required to report storm water discharge
              monitoring results under the  MSGP
              identifies the parameters to be monitored
       •      identifies when to monitor, and when and where to report monitoring results
              provides monitoring instructions for industries that transferred permit coverage
              from the 1992 Baseline General Industrial Storm Water Permit
       •      provides instructions on how to record monitoring results on a Discharge
              Monitoring Report (DMR)
              lists additional state-specific requirements that facilities, depending on their
              geographic location, must meet in addition to EPA requirements

It should be noted that this document is intended to be used solely as guidance to clarify the reporting terms
and conditions of the permit. Please consult the permit for official requirements.

If you have any questions regarding this guidance or the NPDES storm water program, please contact the
EPA Storm Water Coordinator in your Region (see Exhibit 8).

Comments from users of this guidance document are welcome.  Please send comments to:

U.S. EPA, Office of Water
NPDES Program Branch
Mail Code 4203
401 M St. S.W.
Washington, DC 20460
January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
                  U.S. Environmental Protection Agency
                                            EXHIBIT 1
         AREAS WHERE THE MULTI-SECTOR GENERAL PERMIT IS APPLICABLE*
  The conditions outlined in this guidance document are applicable only to facilities covered by the Multi-
  Sector General Permit, inclusive of the latest modification, issued by EPA.  If you are located in an
  NPDES-authorized state, you must consult your state-specific storm water general permit or your state
  permitting authority for specific permit conditions. The Multi-Sector General Permit is available to
  industrial dischargers in the following states and territories:
          State lands in:
          Alaska
          Arizona
          District of Columbia
          Florida
          Guam
          Idaho
          lohnston Atoll
         Indian lands in:
         Alaska
         Arizona
         California
         Connecticut
         Florida
         Goshute Reservation in Utah
         Idaho (except the Duck Valley Reservation)
         Louisiana
         Massachusetts
         Federal facilities in:
         Alaska
         Arizona
         District of Colombia
         Delaware
         Guam
         Idaho
         lohnston Atoll
         Midway and Wake Islands
         Puerto Rico
         Vermont
         Washington
Maine
Massachusetts
Midway and Wake Islands
New Hampshire
New Mexico
Oklahoma (Oil & Gas Exploration only- SIC 13XX)
Puerto Rico
Maine
Navajo Reservation in Utah
New Mexico (except Ute Mountain Reservation lands)
Nevada
Oklahoma
Oregon
Rhode Island
Texas
Washington
 Based on 60 FR 51108, 61 FR 5248, 61 FR 50020, and 63 FR 52430.
                                                                                        January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

2.     OVERVIEW OF MONITORING REQUIREMENTS

This section presents a general overview of the types of monitoring required by the MSGP. Specific
monitoring requirements may be found in Sections 3, 4, and 5 of this guidance.  In addition, there are state-
specific monitoring requirements that must be met.  These are presented in Section 9.

2.1    Types of Monitoring
The MSGP requires operators of industrial facilities to perform as many as three types of monitoring of their
storm water outfalls: visual examination, analytical monitoring, and compliance monitoring.  The types of
monitoring required vary among industry sectors and sub-sectors.  Facilities that have discharges subject to
analytical and/or compliance monitoring must report their results to the appropriate EPA Regional Office. In
the case of Alaska, Arizona, Guam, and New Mexico, facilities must report their results to the appropriate
state office (see Section 10).  Instructions on how to record and report results of analytical and compliance
monitoring are presented in Sections 4 and 5, respectively.

2.2    Sampling Guidance
Guidance on procedural methods for conducting storm water sampling is provided in the NPDES Storm
Water Sampling Guidance Manual (EPA 833-B-92-001, July 1992), which can be obtained by contacting the
Office of Water Resource Center at (202) 260-7786 or at waterpubs@epa.gov.

2.3    Sample Type
Grab samples may be used for all visual, analytical, and compliance monitoring required in the MSGP, except
at airports  required to conduct analytical  monitoring of deicing/anti-icing activities. Such facilities must
collect a flow-weighted composite in addition to a grab sample.  All grab samples must be collected from the
discharge resulting from a storm event greater than 0.1  inches in magnitude and that occurs at least 72 hours
from the previously measurable (greater than 0.1 inch rainfall) storm event.  The 72-hour storm event interval
may be waived where:

             the preceding measurable storm event did not result in a measurable
             discharge from the facility; or
             the permittee documents that less than a 72-hour interval is representative
             for local storm events during the season when sampling is being conducted.

2.4    Sample Frequency
While visual examinations must be performed on a quarterly basis throughout the permit term, analytical
monitoring must be performed on a quarterly basis in years two and four of the MSGP.  Compliance
monitoring must be performed on an annual basis throughout the permit term with the exception of certain
mine dewatering activities that must perform compliance monitoring on a quarterly basis.  See Section 5  for
more information.

Also,  conditions published in 63 FR 42545 modifications require additional monitoring for Sector G, the
Active Ore Mining and Dressing sites. See Section 4.2 for more information. Year four of the permit cycle
started October 1998. All facilities with analytical  monitoring requirements should begin sampling at that time
except for two conditions.  First, facilities that had permit coverage during the second year of coverage
(October 1, 1996 to  September 30, 1997) and qualify for the low concentration waiver do not need to
monitor. Second, those facilities that are switching from the Baseline Permit to the MSGP during the first
quarter of the fourth sampling year, do not commence sampling until the second quarter of year four.
3.     VISUAL EXAMINATION REQUIREMENTS

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
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Virtually all facilities covered by the MSGP are required to perform
visual examinations of their storm water discharges. Visual
examinations provide a simple and inexpensive means of obtaining a
rough assessment of storm water quality.  Each examination is to be
performed in a well lit area by the facility operator, who must
examine a sample collected in the first half hour of discharge (or as
soon thereafter as practical, but not to exceed one hour) and note
any color, odor, clarity, floating solids, settled solids, suspended
solids, foam, oil sheen, and any other indicators of possible storm
water pollution. Additional guidance on performing visual
examinations is provided in the Fact Sheet to the MSGP (60 FR
50803).
Quick Reference:

      Visual Examinations

*  Visual examinations must be
   performed on a quarterly basis
   throughout the term of the permit.
>•  Samples should be collected within
   the first 30 minutes of discharge.
>•  Examination should be made for any
   color, odor, solids, oil sheen, etc.
3.1    When to Perform Visual Examinations
The schedule for performing visual examinations must be clearly documented in the facility's storm water
pollution prevention plan. Examinations are required to be performed on a quarterly basis throughout the
period of permit coverage, with the exception of air transportation facilities and coal mining facilities (see
Section 3.2 Exceptions below). Visual examinations may begin during the first full quarter of permit
coverage.  At facilities where quarterly visual examinations are required, at least one examination must be
performed during each of the following quarters: October through December, January through March, April
through June, and July through September.

Grab samples must be taken in the first 30 minutes of the discharge. In the case of coal mining-related
facilities (Sector H), grab samples must be taken in the first 60 minutes of discharge.  If the collection of a
grab sample during the first 30 minutes is impracticable (60 minutes for Sector H), a grab sample can be taken
during the first hour of the discharge (two hours for Sector H), provided the discharger submits with the
DMR a description of why a grab sample during the first 30 minutes was impracticable (60 minutes for  Sector
H).

3.2    Exceptions
There are two exceptions to the requirement to conduct visual examinations on a quarterly basis within  the
first 30 minutes of discharge:

    1) Air transportation facilities (Sector S) are not required to perform visual examinations  of their storm
       water discharges.
    2) Coal mining-related facilities (Sector H) must perform visual monitoring within the first 60 minutes of
       discharge (or as soon thereafter as practical, but not to exceed 2 hours). Visual examinations are not
       required for inactive areas not under Surface Mining Control and Reclamation Act (SMCRA) bond.
       However, visual examinations must be  performed:
           •     quarterly for active areas under SMCRA bond located in areas with annual precipitation
                greater than 20  inches;  and
                semi-annually  for inactive areas under SMCRA bond, and active areas under SMCRA bond
                located in areas with average  annual precipitation of 20 inches or less.  At least one
                examination must be performed during each of the following periods: January through June
                and July through December.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

3.3    Reporting
A facility is not required to submit visual examination results unless requested to do so by EPA. However,
results from all visual examinations should be documented in the facility's storm water pollution prevention
plan, including the date, the name of the person performing the examination, storm event data such as
intensity and duration, and the results.

3.4    Interpreting Visual Examination Results
Results of visual examinations should be used by the facility to identify any problems that need to be
addressed, such as oil or grease in the storm water discharge.  The operator should also document any
changes made to the storm water pollution prevention plan as a result of visual examinations.

3.5    Representative Discharge
When a facility has two or more outfalls that the permittee reasonably believes discharge substantially identical
effluents, the permittee may examine a sample from one of such outfalls and report that the examination data
applies to the substantially identical effluent. Permittees must document their rationale for this in their storm
water pollution prevention plan, including consideration of industrial  activity, significant materials, and
management practices in  the drainage areas that flow to the respective outfalls. Page 107 of the NPDES
Storm Water Sampling Guidance Document (EPA 800/B-92-001) lists criteria for substantially identical
outfalls.  The representative discharge provision is not available for compliance monitoring for national
effluent guideline limit compliance purposes (see Section 5).

3.6    Sampling Waivers
The MSGP allows for waivers from visual examination requirements under two circumstances: adverse
weather conditions, and unstaffed and inactive sites.   It should be noted that these waivers cannot be used for
compliance monitoring requirements associated with effluent limitations.

    Adverse Weather Conditions
    When a discharger is unable to collect samples over the course of the visual examination period as a result
    of adverse climatic conditions, the reason for not  performing the  visual examination must be documented
    and retained onsite with the storm water pollution prevention plan. Adverse weather conditions that may
    prohibit the collection of samples include weather conditions  that create dangerous conditions for
    personnel  (such as local flooding, high winds, hurricanes, tornadoes, electrical storms, etc.) or otherwise
    make the collection of a sample impracticable (drought, extended frozen conditions, etc.).

    Unstaffed and Inactive Sites
    If a facility with  discharges subject to visual examination requirements is both inactive and unstaffed, the
    discharger may exercise a waiver of the visual examination requirement as long as the facility remains
    inactive and unstaffed.  The facility must maintain a certification with the storm water pollution
    prevention plan stating that the site is inactive and unstaffed and that performing visual examinations
    during a qualifying event is not feasible.
January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
                     U.S. Environmental Protection Agency
4.     ANALYTICAL MONITORING REQUIREMENTS
Analytical monitoring is required only for the
industry sectors or sub-sectors that were
determined to have a high potential to discharge
a pollutant at concentrations of concern. It
provides feedback to the facility operator to
assess the effectiveness of the site's storm water
pollution prevention plan. Exhibit 2 identifies
the industry sectors or sub-sectors that are
required to perform analytical monitoring of
their storm water discharges.  In addition to the
requirements listed in this section, facilities
must comply with specific state and EPA
Region requirements in the permit (see Section
9 of this guidance).
Quick Reference:

               Analytical Monitoring

-  Analytical monitoring must be performed on a quarterly
   basis in years two and four of the permit.
>•  Samples should be collected within the first 30 minutes
   of discharge.
••  Analytical results must be submitted to EPA on a Discharge
   Monitoring Report (DMR) form (see Exhibit 5).
»  Results should be compared to Benchmark Concentrations
   (see Exhibit 4) to evaluate the effectiveness of the facility's
   Storm Water Pollution Prevention Plan.
4.1    Parameters to Monitor
Exhibit 2 lists the specific parameters (pollutants) that must be monitored by each industry sector or subsector
that is subject to analytical monitoring.  This table does not include parameters that must be monitored for
discharges subject to compliance monitoring, which is discussed in Section 5. Sector G, the Active Ore
mining and Dressing sites, requirements can be found in Exhibits 2.1 and 2.2.

4.2    When to Sample
Analytical monitoring must be performed on a quarterly basis in years two and four of the permit.  However,
years two and four do not exactly coincide in every geographic region of the United States due to the
respective dates the permit was published by the EPA Regions.  Consult Exhibit 3 to find the exact time frame
for analytical monitoring. If a facility receives permit coverage  during a monitoring period, monitoring may
begin during the first full quarter of permit coverage.

If, as a result of averaging the results of the four quarterly samples collected in year two, a facility's average
pollutant discharge concentration is below the benchmark levels found in Exhibit 4, the facility may waive year
four's analytical  monitoring requirements unless the facility operator is asked to continue monitoring  by EPA.
However, any facility that gained permit coverage during year two must sample in year four for whatever
quarters were missed in year two prior to averaging the values for each parameter.  If the average values are
below the associated benchmark values, analytical monitoring for the remainder of year four is not required.
A facility must still perform monitoring in year four for any parameters required by the MSGP that were not
required under the Baseline General Industrial Permit.

A facility that began operation during year two may exercise a sampling waiver for the remainder of the term
of the permit only if results from four monitoring periods (e.g., three in year two and one in year four) have
been reported and the average pollutant concentration is less than the benchmark concentration for that
pollutant.

Any facility that gained permit coverage after the end of year two or transferred permit coverage from the
1992 Baseline General Industrial Storm Water Permit after the end of year two is not required to perform
analytical monitoring until year four of the permit.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

All monitoring results obtained during the second and fourth years of permit coverage must be submitted by
March 31st of the year following the last monitoring quarter, as shown in the monitoring and reporting
schedule in Exhibit 3.

Monitoring requirements for waste rock and/or overburden sources eligible for authorization under Sector G
of the Multi Sector General Permit were modified to include additional requirements (63 FR 42533).  All
permittees must conduct analytic monitoring once for the parameters listed in Exhibit 2.1, and twice annually
for any parameters measured above the benchmark value listed in Exhibit 2.1. Permittees must also conduct
analytic monitoring twice annually for the parameters listed in Exhibit 2.2 for each of the ore mine categories
listed in Exhibit 2.2.  The initial sampling conducted of Exhibit 2.1 pollutant parameters satisfies the
requirement for the first sample for any pollutant measurement required by Exhibit 2.2.

4.3    Interpreting Analytical Monitoring Results
As stated previously, facilities with average pollutant concentrations that are lower than the benchmark
concentrations on a pollutant-by-pollutant basis do not need to perform analytical monitoring for those
parameters in year four. However, facilities with average pollutant concentrations that are higher than the
benchmark concentration must, in addition to continuing to perform analytical monitoring in year four, review
and revise their storm water pollution prevention plan to reduce the concentration of pollutants in their storm
water discharges. Year four's analytical monitoring results may then be used as an indicator of the
effectiveness of the revision to the storm water pollution prevention plan. If year four's analytical monitoring
results are still above benchmark concentrations,  the storm water pollution prevention plan must be reviewed
and revised once again by the facility operator in an attempt to further reduce pollutant loads.

4.4    Representative Discharge
When a facility has two or more discharges that the permittee reasonably believes discharge substantially
identical effluents, the permittee may test the effluent from one of such outfalls and report that the quantitative
data applies to the substantially identical effluent. Permittees must document their rationale indicating
substantially identical effluents in their storm water pollution prevention plan.  Page 107 of the NPDES Storm
Water Sampling Guidance Document (EPA 800/B-92-001) lists criteria for substantially identical outfalls.
The representative discharge provision is not available for compliance monitoring for national effluent
guideline limit compliance purposes.

4.5    Sampling Waivers
The MSGP allows for waivers from analytical monitoring requirements under two circumstances: adverse
weather conditions, and unstaffed and inactive sites.  It should be noted that these waivers cannot be used for
compliance monitoring requirements associated with effluent limitations (see Section 5).

    Adverse Weather Conditions
    The permit allows for temporary waivers from analytical monitoring based on adverse climatic conditions.
    If samples cannot be  collected within a specified sampling period due to insurmountable weather
    conditions such as drought or dangerous conditions (e.g., lightning, flash flooding, or hurricanes), the
    discharger must collect a substitute sample from  a separate qualifying event in the next sampling period.
    This substitute sample must be taken in addition to the routine monitoring required in that period. Both
    samples should be analyzed separately.

    Unstaffed and Inactive Sites
    If a facility with discharges subject to analytical monitoring requirements is both inactive and unstaffed,
    and the ability to conduct sampling within permit specifications is not possible, then the discharger must
    certify in the DMR that the facility is inactive and unstaffed and that the ability to conduct sampling within

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

    the specifications is not possible.

4.5.1  Facilities Transferring from the Baseline to the Multi-Sector Permit
For those facilities required to conduct quarterly analytical monitoring under the MSGP, the final sampling
year of the permit runs from October 1, 1998 to September 30, 1999. According to a memo from Michael
Cook, Director of the Office of Wastewater Management to the Regional Water Management Division
Directors, permittees that transfer from the Baseline permit are not required to conduct the monitoring that
the MSGP requires in the first quarter (i.e., October to December 1998) because the transferees coverage
under the MSGP begins in the middle of that quarter.

Transferees from the Baseline permit are only required to perform any monitoring during 1998 that is required
by the Baseline permit. For some permittees covered under the Baseline permit, the Baseline permit may have
required annual or semiannual monitoring. If such permittees have not conducted monitoring required under
the Baseline permit, the monitoring would need to be performed before December 31, 1998.

All permittees who transfer from the expiring Baseline permit are required to conduct any applicable analytic
monitoring that the modified MSGP requires beginning with the second quarter (i.e., January to March 1999).
Permittees should refer to the MSGP for the specific monitoring requirements applicable to their sector (63
FR 52467).

4.6    Sampling Exemption - Alternative Certification
A facility in an industry sector or sub-sector subject to analytical monitoring requirements can obtain an
exemption from monitoring for any particular pollutant if the facility operator can certify that there is no
source of that pollutant which is exposed or expected to be exposed to storm water during the certification
period. This certification must be submitted as part of the DMR in lieu of monitoring data.  The alternative
certification  is not available for compliance monitoring for effluent guideline limit compliance purposes.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
U.S. Environmental Protection Agency
                                                       EXHIBIT 2
        INDUSTRY SECTORS/ SUB-SECTORS SUBJECT TO ANALYTICAL MONITORING
                            UNDER THE MULTI-SECTOR GENERAL PERMIT l
MSGP Sector 2
A
B
C
D
E
F
G
H
J
K
L
M
N
O
Q
S
U
Y
AA
Industry Sub sector
General Sawmills and Planing Mills
Wood Preserving Facilities
Log Storage and Handling
Hardwood Dimension and Flooring Mills
Paperboard Mills
Industrial Inorganic Chemicals
Plastics, Synthetic Resins, etc.
Soaps, Detergents, Cosmetics, Perfumes
Agricultural Chemicals
Asphalt Paving and Roofing Materials
Clay Products
Concrete Products
Steel Works, Blast Furnaces, and Rolling and Finishing
Mills
Iron and Steel Foundries
Non-Ferrous Rolling and Drawing
Non-Ferrous Foundries (Castings)
Copper Ore Mining and Dressing
Coal Mines and Coal-Mining Related Facilities
Dimension Stone, Crushed Stone, and Nonmetallic
Minerals (except fuels)
Sand and Gravel Mining
Hazardous Waste Treatment Storage or Disposal
Landfills, Land Application Sites, and Open Dumps
Automobile Salvage Yards
Scrap Recycling
Steam Electric Generating Facilities
Water Transportation Facilities
Airports with deicing activities 3
Grain Mill Products
Fats and Oils
Rubber Products
Fabricated Metal Products Except Coating
Fabricated Metal Coating and Engraving
Required Parameters for Analytical Monitoring
COD, TSS, Zinc
Arsenic, Copper
TSS
COD, TSS
COD
Aluminum, Iron, Nitrate + Nitrite N
Zinc
Nitrate + Nitrite N, Zinc
Nitrate + Nitrite N, Lead, Iron, Zinc, Phosphorus
TSS
Aluminum
TSS, Iron
Aluminum, Zinc
Aluminum, TSS, Copper, Iron, Zinc
Copper, Zinc
Copper, Zinc
COD, TSS, Nitrate + Nitrite N
TSS, Aluminum, Iron
TSS
Nitrate + Nitrite N, TSS
Ammonia, Magnesium, COD, Arsenic, Cadmium, Cyanide, Lead, Mercury,
Selenium, Silver
Iron, TSS
TSS, Aluminum, Iron, Lead
Copper, Aluminum, Iron, Lead, Zinc, TSS, COD
Iron
Aluminum, Iron, Lead, Zinc
BOD, COD, Ammonia, pH
TSS
BOD, COD, Nitrate + Nitrite N, TSS
Zinc
Iron, Aluminum, Zinc, Nitrate + Nitrite N
Zinc, Nitrate + Nitrite N
1.  Exhibit does not include parameters for compliance monitoring under effluent limitations guidelines.
2.  Sectors I, P, R, V, W, X, Z, AB, AC, and AD have no analytical monitoring requirements identified under the MSGP. However, facilities under these sectors may
need to monitor for parameters listed under state-specific requirements (see Section 6).
3.  Monitoring requirement is for airports with deicing activities that utilize more than 100 tons of urea or more than 100,000 gallons of ethylene glycol per year.
January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
                    U.S. Environmental Protection Agency
                                            EXHIBIT 2.1
    INITIAL MONITORING REQUIREMENTS FOR STORM WATER DISCHARGES FROM
    WASTE ROCK AND OVERBURDEN PILES RESULTING FROM MINING ACTIVITY AT
                      ACTIVE ORE MINING OR DRESSING OPERATIONS
  Pollutants of Concern
              Benchmark Values
  Total Suspended Solids                                             100 mg/L
  (TSS)	 Turbidity           5 NTUs above background
  (NTUs)	        6.0- 9.0 standard units
  pH	   no benchmark value
  	  Hardness (as                                                0.636 mg/L
  CaCo3)	           0.16854 mg/L
  Antimony,                                                      0.13 mg/L
  Total	         0.0159 mg/L
  Arsenic, Total                                                   0.0636 mg/L
                                                               1.0 mg/L
  Beryllium,                                                      0.0816 mg/L
  Total	         1.0 mg/L
  Cadmium, Total (hardness                                          0.0024 mg/L
  dependent)	 Copper, Total          1.417 mg/L
  (hardness dependent)	 Iron,       0.2385 mg/L
  Total	    0.0318 mg/L
  Lead, Total (hardness                                              0.117 mg/L
  dependent)	 Manganese,
  Total	
  Mercury,
  Total	
  Nickel, Total (hardness
  dependent)	 Selenium,
  Total	
  Silver, Total (hardness
  dependent)	
  Zinc, Total (hardness
                                            EXHIBIT 2.2
              ADDITIONAL MONITORING REQUIREMENTS (TWICE ANNUAL)
    FOR STORM WATER DISCHARGES FROM WASTE ROCK AND OVERBURDEN PILES
       RESULTING FROM MINING ACTIVITY AT ACTIVE ORE MINING OR DRESSING
                       OPERATIONS BASED ON TYPE OF ORE HANDLED
  Type of Ore Mined
Pollutant/Parameter
                                                 Total
                                                 Suspende
                                                 d Solids
               Metal, total
   10
                                       January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
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Tungsten
Ore
Nickel
Ore
Aluminum
Ore
Mercury
Ore Iron
Ore 	
Platinum
Ore 	
Titanium
Ore
Vanadium
Ore
Copper, Lead, Zinc, Gold, Silver, and
Molybdenum 	
Uranium, Radium, and
Vanadium

X
X
X
X
X

X
X
X
X



X
X
X
X
X

X
X
X
X



Arsenic, Cadmium (H), Copper (H), Lead (H),
Zinc(H)
Arsenic, Cadmium (H), Copper (H), Lead (H),
Zinc (H)
Aluminum, Iron
Nickel (H) Mercury
Iron (Dissolved)
Cadmium (H) Copper (H) Mercury Lead (H)
Zinc (H)
Iron, Nickel (H), Zinc (H)
Arsenic, Cadmium (H), Copper (H), Lead (H),
Zinc (H)
Arsenic, Cadmium (H), Copper (H), Lead (H),
Mercury Zinc (H)
Chemical Oxygen Demand, Arsenic, Radium
(Dissolved and Total) Uranium Zinc (H)



Note: (H) indicates that hardness must also be measured when this pollutant is measured.
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                                 U.S. Environmental Protection Agency
                                               EXHIBIT 3
             ANALYTICAL MONITORING PERIODS AND REPORTING DEADLINES
 Geographic Location of Facility
Analytical Monitoring Schedule
DMR Postmark Deadlines
 Facilities in all areas of coverage other
 than Alaska or Guam:
 Facilities in Alaska:
 Facilities in Guam:
Years 2 and 4:
October - December (1996, 1998)
January - March (1997, 1999)
April - June (1997, 1999)
July - September (1997, 1999)

Years 2 and 4:
January - March (1997, 1999)
April - June (1997, 1999)
July - September (1997, 1999)
October - December (1997, 1999)

Years 2 and 4:
October - December (1997, 1999)
January - March (1998, 2000)
April - June (1998, 2000)
July - September (1998, 2000)
March 31(1998, 2000)
March 31(1998, 2000)
March 31(1999, 2001)
                                               EXHIBIT 4
           PARAMETER BENCHMARK VALUES FOR ANALYTICAL MONITORING*
Parameter
Aluminum, Total Recoverable
Ammonia
Arsenic, Total Recoverable
Biological Oxygen Demand
(BOD5)
Cadmium, Total Recoverable
Chemical Oxygen Demand
(COD)
Copper, Total Recoverable
Cyanide, Total
Iron, Total Recoverable
Lead, Total Recoverable
Magnesium, Total Recoverable
Benchmark Level (mg/1
unless otherwise noted)
0.75
19.0
0.16854
30
0.0159
120.0
0.0636
0.0636
1.0
0.0816
0.0636
Parameter
Mercury, Total Recoverable
Nitrate + Nitrite Nitrogen
Nitrogen, Total Kjeldahl
Oil & Grease
pH
Phosphorous
Selenium, Total Recoverable
Silver, Total Recoverable
Total Organic Carbon (TOC)
Total Suspended Solids
(TSS)
Zinc, Total Recoverable
Benchmark Level (mg/1
unless otherwise noted)
0.0024
0.68
1.5
15
6.0 to 9.0 s.u.
2.0
0.2385
0.03818
50
100
0.117
* Exhibit does not include parameter values for compliance monitoring under effluent limitations guidelines.
   12
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4.7    Step-By-Step Instructions for Recording Analytical Monitoring Results
Read Section 4 and refer to the additional state-specific requirements in Section 9 prior to recording
monitoring results on a DMR.  For each outfall, a separate DMR form is required for each storm event
sampled. Facilities conducting analytical monitoring beyond the minimum requirements must report all
additional data.

When following these step-by-step instructions, refer to Exhibit 5, Sample DMR for Recording Analytical
Monitoring Results.  The words and phrases in italics in the following step-by-step instructions refer to
specific locations or headings on the DMR. The steps are identified on the sample DMR in Exhibit 5 by the
step number enclosed in a circle. If more than one page is needed to record monitoring results, enter the
information for steps 1, 2, 3, 4, 5, 6, and 12 on every page.

1)    Name/Address
      Enter the Permittee Name/Mailing Address and Facility Name/Location, if different.

2)    Permit Number
      Enter the Permit Number for your facility. The permit number is the unique number assigned
      specifically to your facility for coverage under a storm water general permit.  Your facility's permit
      number can be found  in the letter you received confirming that your facility is covered by the permit. If
      no confirmation letter was received, call the NOI Processing Center at (301) 495-4145.

3)    Discharge Number
      If you are submitting  monitoring results for more than one outfall, you must record the outfall's
      Discharge Number. You must assign a unique discharge number (e.g., 001, 002, etc.) to each outfall.
      It is appropriate to assign each outfall the same number it is assigned in your facility's storm water
      pollution prevention plan. If the facility has existing NPDES permits for other outfalls, do not duplicate
      outfall numbers. Rather, begin with the number following the last one assigned in your existing permit.
      If you believe that the discharges from your facility's outfalls are substantially identical, please see the
      Representative Discharge (section 3.5) discussion.

4)    Monitoring Period
      Under Monitoring Period, enter dates for the beginning and end of the period covered by the DMR (see
      Exhibit 3)

5)    Discharge Sector/Subsector
      In the top right corner of the form, indicate the letter and the narrative description of the Sector(s)
      and/or Subsector(s) for the discharge that was sampled (e.g., Steam Electric Generation - Sector O).

6)    No Discharge
      If no discharge occurred from the outfall during the monitoring period, check the box labeled Check
      here if No discharge.

7)    Storm Event Characteristics
      Use the first box under Parameter to record the date and duration of the storm, as well as the time
      elapsed since the last  measurable storm greater than 0.1 inch.

      Under Quantity or Loading, in the Maximum column, enter the inches of rainfall (or best estimate) for
      the storm that generated the discharge sampled.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

     Under Quality or Concentration., in the Maximum column, enter an estimate in gallons of the total
     volume of flow through the outfall.

     Record the units that were used in the Units columns.

8)   Parameters - Sampled Pollutants
     Enter each parameter as specified in the monitoring requirements of your permit (see Exhibits 2, 2.1,
     2.2, 3, 5, and Section 9 for applicable parameters) in the Parameter column. Please note that you only
     have to monitor for those parameters listed in your permit. One line is needed for each sample type.
     Therefore, if required to report results for both grab and composite samples of the same parameter, use
     two lines.

9)   Recording of Sample Results
     Enter the monitoring results for each parameter according to the following format.  Under Quality or
     Concentration., record grab sample results in the Maximum column and record composite sample results
     (if required) in the Average column.  Remember to use one line for each sample type.

     Leave the Permit Requirement row blank, as there are no numeric effluent limitations for analytical
     monitoring under the MSGP.

10)  Sample Type
     Only a grab sample must be collected and analyzed for all parameters, except for airports, which must
     collect a flow-weighted composite in addition to a grab sample.  Enter a "G" for a grab sample or an
     "F" for a flow-weighted composite sample in the Sample Type column.
11)  Comment
     Any comments, additional information, or references to attachments should be recorded. For example,
     if a grab sample was not taken during the first 30 minutes, an explanation of why this was not possible
     must be submitted with the DMR.  In addition, any sampling waivers the facility is taking (e.g.,
     unstaffed or inactive site)  should be clearly explained.

13)  Identification/Certification
     Enter Name/Title of Principal Executive Officer, Signature of Principal Executive Officer or
     Authorized Agent, Telephone Number, and Date at the bottom of each page of the DMR after reading
     the Certification Statement.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
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                                            EXHIBIT 5
               SAMPLE DMR FOR REPORTING ANALYTICAL MONITORING RESULTS
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
     U.S. Environmental Protection Agency
5.     COMPLIANCE MONITORING REQUIREMENTS
The MSGP provides coverage for storm water discharges
subject to effluent  guidelines, provided that the discharges are
not already subject to an existing individual NPDES storm water
permit.  These are:

  •   contaminated storm water runoff from phosphate fertilizer
      manufacturing facilities
  •   runoff associated with asphalt paving or roofing emulsion
      production
  •   runoff from material storage piles at cement manufacturing
      facilities
  •   runoff from coal piles at steam electric generating facilities
  •   runoff from spray down of lumber and wood products in
      storage yards (wet decking) used by the timber industry
  •   coal pile runoff from all facilities covered by the permit
Quick Reference:

      Compliance Monitoring

-  The MSGP offers coverage to only very
   specific types of discharges subject to
   effluent limitation guidelines;
   compliance monitoring must be
   performed on these discharges.
»  Compliance monitoring must be
   performed on an annual basis throughout
   the term of the permit.
••  Results must be submitted to EPA on a
   Discharge Monitoring Report (DMR)
   form (see Exhibit 7).
Facilities with discharges subject to any other effluent limitation
guideline may not seek coverage under the MSGP for those discharges. Those facilities should contact their
Regional Storm Water Coordinator for further assistance (see Exhibit 8).

Monitoring is required for discharges subject to numeric storm water effluent limitations to determine
compliance with those limits.  Compliance monitoring is required to be performed on an annual basis (except
for the EPA Region-specific effluent limitations discussed below). Each monitoring period extends from
October 1 to September 30. Results from compliance monitoring must be reported annually and may be used
to meet the quarterly analytical monitoring requirements for the specified pollutants, where compatible.
Exhibit 6 lists those discharges that are subject to compliance monitoring and the respective parameters for
which monitoring is required.  Please  consult the MSGP for specific effluent limitations values.

EPA Region-Specific Effluent Limitations
Exhibit 6 includes numeric effluent limitations for mine dewatering discharges composed entirely of storm
water or ground water seepage from construction sand and gravel, industrial sand, and crushed stone mines
located in Regions II,  VI, IX,  and X (See Exhibit 8 for EPA Region areas of coverage).  In these four EPA
Regions, compliance monitoring for mine dewatering discharges that are composed entirely of storm water or
ground water seepage  must be performed on a quarterly basis. Samples must be collected during each of the
following periods:  October through December, January through March, April through June, and July through
September. Monitoring results must be submitted annually no later than the 30th day of November following
each October-September monitoring period.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
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                                            EXHIBIT 6
                   DISCHARGES SUBJECT TO COMPLIANCE MONITORING
                        UNDER EFFLUENT LIMITATIONS GUIDELINES
Discharges
Phosphate Fertilizer Manufacturing Runoff (40 CFR part 418)
Asphalt Paving and Roofing Emulsions Production Runoff (40 CFR part 443)
Cement Manufacturing Materials Storage Piles Runoff (40 CFR part 411)
Coal Pile Runoff from Steam Electric Facilities (40 CFR part 423)
Coal Pile Runoff from All Facilities (60 FR 5 1 1 18)
Construction Sand and Gravel, Industrial Sand, and Crushed Stone Mine
Dewatering (40 CFR part 436) located in Regions II, VI, IX, X and the State of
Arizona
Runoff from Wet Decking at Timber Products Facilities (40 CFR Part 429)
Compliance Monitoring Parameters
Total Phosphorus, Fluoride
TSS, oil and grease, pH
TSS, pH
TSS, pH
TSS, pH
TSS, pH
debris, pH
5.1    Step-By-Step Instructions for Recording Compliance Monitoring Results
Read Section 5 and refer to the additional state-specific requirements in Section 9 prior to recording
compliance monitoring results on a DMR.  For each outfall, a separate DMR form is required for each storm
event sampled.

Additional Notification
Facilities with at least one storm water discharge associated with industrial activity to a medium or large
municipal separate storm sewer system (systems serving a population of 100,000 or more) or a municipal
system designated by the Director must submit signed copies of discharge monitoring reports to the operator
of the municipal  separate storm sewer system.

When following  these step-by-step instructions, refer to Exhibit 7, Sample DMR for Recording Compliance
Monitoring Results.  The words and phrases in italics in the following step-by-step instructions refer to
specific locations or headings on the DMR.  The steps are identified on the sample DMR in Exhibit 7 by the
step number enclosed in a circle.  If more than one page is needed to record monitoring results, enter the
information for steps 1, 2, 3, 4, 5, and 13 on every page.

1)    Name/Address
      Enter the Permittee Name/Mailing Address and Facility Name/Location, if different.

2)    Permit Number
      Enter the Permit Number for your facility. The permit number is the unique number assigned
      specifically to your facility for coverage under a storm water general permit. Your facility's permit
      number can be found in the letter you received confirming that your facility is covered by the permit. If
      no confirmation letter was received, call the NOI Processing Center at (301) 495-4145.

3)    Discharge Number
      If you are submitting monitoring results for more than one outfall, you must record the outfall's
      Discharge  Number. You must assign a unique discharge number (e.g., 001, 002, etc.) to each outfall.
      It is appropriate to assign each outfall the same number it is assigned in your facility's storm water
January 1999
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

     pollution prevention plan. If the facility has existing NPDES permits for other outfalls, do not duplicate
     outfall numbers. Rather, begin with the number following the last one assigned in your existing permit.

4)   Monitoring Period
     Under Monitoring Period., enter dates for the beginning and end of the period covered by the DMR.

5)   Discharge Sector/Subsector
     In the top right corner of the form, provide a narrative description of the Sector(s) and/or Subsector(s)
     for the discharge that was sampled and the category for which compliance monitoring was performed
     (e.g., Steam Electric Generation - Sector O).

6)   No Discharge
     If no storm water discharge occurred from the outfall  during the monitoring period, check the box
     labeled Check here if No Discharge.

7)   Storm Event Characteristics
     Use  the first box under Parameter to record the date and duration of the storm, as well as the time
     elapsed since the last measurable storm greater than 0.1 inch.

     Under Quantity or Loading, in the Maximum column, enter the inches of rainfall (or best estimate) for
     the storm that generated the discharge sampled.

     Under Quality or Concentration, in the Maximum column, enter an estimate in gallons of the total
     volume of flow through the outfall.

     Record the units that were used in the Units columns.

8)   Parameters - Sampled Pollutants
     Enter each parameter as specified in the monitoring requirements of your permit (see Exhibit 6 and
     Section 9). One line is needed for each sample type.

9)   Recording of Sample Results
     Enter the monitoring results for each parameter according to the following format. Under Quality or
     Concentration, record grab sample results in the Maximum  column and record composite sample results
     (if required) in the Average column.  Remember to use one line for each sample type.  Record the units
     used in the Units column

10)  Effluent Limitations
     To report monitoring results for parameters where effluent limitations apply, enter the limitation as the
     Permit Requirement under Quality or Concentration.

ii)  NO.EX
     Under the No. Ex column, enter  a "Y" if the sample measurement during the monitoring period
     exceeded the effluent limitation for that parameter.  Otherwise, leave the space blank.

12)  Frequency of Analysis
     In the Frequency of Analysis column, enter the required sampling frequency.  Insert "01/YR" if you are
     required to monitor once per year, or "04/YR"  if you are required to monitor quarterly.
   18                                                                                 January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

13)  Sample Type
     Under the Sample Type column, record the type of sample used for the analysis. The MSGP requires
     grab samples for compliance monitoring, so record "G" for a grab sample.

14)  Comment
     Any comments, additional information, or references to attachments should be recorded.  For example,
     any violations of effluent limitations should be noted, along with an explanation of the violation and a
     description of remedial actions taken.

15)  Identification/Certification
     Enter Name/Title of Principal Executive Officer, Signature of Principal Executive Officer or
     Authorized Agent, Telephone Number, and Date at the bottom of each page of the DMR after reading
     the Certification Statement.
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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
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                                         EXHIBIT 7
          SAMPLE DMR FOR REPORTING COMPLIANCE MONITORING RESULTS
   20
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6.     STATE-SPECIFIC REQUIREMENTS

In addition to following the instructions discussed in Sections 3, 4, 5, 6,  and 7, dischargers in Alaska,
Arizona, Guam, New Mexico, and Texas must comply with the following special monitoring and reporting
requirements. (See Part XII of the MSGP for additional requirements and more specific details.)

6.1    Alaska

Additional Reporting Requirements: Discharge monitoring reports or other reports required under the
permit must also be sent to the nearest appropriate state office listed below.

       Alaska Department of Environmental Conservation
       Major Facilities & Water Permits Section
       410 Willoughby Avenue, Suite #105
       Juneau, AK 99801
       (907) 465-5276
       (907) 465-5274 (FAX)

       Alaska Department of Environmental Conservation
       Major Facilities & Water Permits Section
       555 Cordova Street
       Anchorage, AK 99503
       (907) 269-7500
       (907) 269-7652 (FAX)

       Alaska Department of Environmental Conservation
       Major Facilities & Water Permits Section
       610 University Avenue
       Fairbanks, AK 99709-3643
       (907)451-2360
       (907) 451-2187 (FAX).

6.2    Arizona

Additional Reporting Requirements: Facilities subject to monitoring and reporting requirements shall also
submit DMRs and other required monitoring information to the  State of Arizona Department of
Environmental Quality at the following address:

       Storm Water Coordinator/DMR
       Arizona Department of Environmental Quality
       3033 N. Central Avenue
       Phoenix, Arizona 85012

6.3    Guam

Additional Reporting Requirements: Copies of all discharge monitoring reports and other reports required
under the permit must also be sent to the Guam EPA at the following address:
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       Guam Environmental Protection Agency
       P.O. Box 22439 GMF
       Barrigada, Guam 96921

6.4    New Mexico

Additional Reporting Requirements: Signed copies of all DMRs required under Parts XI and VI. C of the
permit for facilities in New Mexico must be submitted to the following state office address:

       Program Manager, Point Source Regulation Section
       Surface Water Quality Bureau
       New Mexico Environment Department
       1190 St. Francis Drive
       Santa Fe, New Mexico 87504-0968

Additional Monitoring Requirements:  The New Mexico Environment Department (NMED)  is requiring
that all permittees covered under the MSGP who are required to do sampling be additionally required to
monitor and report pH. In addition to the monitoring requirements in Part XI of the permit, the following
facilities shall conduct quarterly monitoring in years two and four of the permit for the additional parameters
indicated below.

  Sector A:     Sawmill & planing facilities: BOD, NO3+NO2, NH3, and TKN.
               Wood preserving facilities: TSS, NO3+NO2, NH3 and TKN.
               Log storage & handling facilities:  COD, NO3+NO2, NH3, and TKN.
               Other wood products facilities: BOD, NO3+NO2, TKN, NH3, and oil & grease.

  Sector B:    Paperboard mills:  NH3, TSS, BOD, NO3+NO2, and TKN.
               Paperboard containers & boxes manufacturers: COD, NO3+NO2, NH3, and TKN.
               Converted paper & paperboard products manufacturers:  COD, NO3+NO2, NH3, and TKN.

  Sector C:    Agricultural chemical manufacturers: total Hg, TSS, NH3, and TKN.
               Inorganic chemical manufacturers: total  Hg, NH3, and TKN.
               Detergents, cosmetics & perfumes manufacturers: COD, TKN, NH3, and TSS.
               Paints, varnishes, enamels & allied products manufacturers: TSS, NH3, NO3+NO2, and
                    TKN.
               Plastics, synthetics, and resins manufacturers: total Hg, NO3+NO2, NH3, and TKN.

  Sector D:    Asphalt paving &  roofing materials manufacturers: COD, NO3+NO2, NH3, and TKN.

  Sector E:    Clay product manufacturers:  TSS.
               Concrete & gypsum product manufacturers: TKN, NH3, and  NO3+NO2.
               Flat glass, glass & glassware, pressed or blown glass products manufacturers: TKN, NH3,
                    and NO3+NO2.

  Sector F:     Steel works:  total Hg, TKN, NO3+NO2, NH3, and TSS.
               Iron & steel foundries: total Hg, COD, NO3+NO2, NH3,  and  TKN.
               Rolling, drawing & extruding - non-ferrous: total Hg, NO3+NO2, NH3, and TKN.
               Non-ferrous foundries:  total Hg, TSS, NO3+NO2, NH3, and TKN.
   22
January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance
U.S. Environmental Protection Agency
  Sector G:     All metal mining facilities:  COD, TSS, NO3+NO2, TKN, NH3, total Hg; in addition, all
                permittees in the SIC code for metals mining shall monitor for any heavy metal which the
                permittee has reason to believe may be present in storm water runoff from the mining
                facility.

  Sector I:      All oil & gas facilities in this sector:  oil and grease, P, and TSS.

  Sector J:      Sand & gravel mining facilities: TKN and NH3.

  Sector K:     All facilities in this sector: TKN, NO3+NO2, and TSS.

  Sector L:     All facilities in this sector: TKN, NH3, and NO3+NO2.

  Sector M:     All facilities in this sector: oil & grease, NO3+NO2, NH3, and TKN.

  Sector N:     All facilities in this sector: oil & grease, NO3+NO2, NH3, and TKN.

  Sector O:     All facilities in this sector: TSS, NO3+NO2, TKN, NH3, and total Zn.

  Sector P:     Railroad transportation: COD, NO3+NO2, TKN, NH3,  TSS, total Zn, and oil & grease.
                Local & highway passenger transportation: NO3+NO2, NH3, oil & grease, TSS, and TKN.
                Motor freight transportation & warehousing: NO3+NO2, NH3, TSS, total Zn, TKN, and oil
                     & grease.
                U.S. Postal Service:  total Zn.
                Petroleum bulk stations:  TKN, NO3+NO2, NH3, and TSS.

  Sector Q:     All facilities in this sector: TSS, NO3+NO2, NH3, and TKN.

  Sector S:      All facilities in this sector: oil & grease, COD, and TSS.

  Sector T:     All facilities in this sector: BOD, NO3+NO2, TKN, NH3, TSS, and fecal coliform.

  Sector U:     Grain mill products:  COD, total Zn, TKN, NO3+NO2, NH3, and total P.
                Fats and oils products: TKNandNH3.
                Dairy products:  BOD, COD, NO3+NO2, TKN, NH3, and TSS.
                Meat products: NO3+NO2, TKN, NH3, and TSS.
                Canned, frozen & preserved fruits:  NO3+NO2, NH3, COD,  and TKN.
                Bakery products: TKN, NO3+NO2, NH3,  and TSS.
                Beverage facilities: total Zn.
                Miscellaneous: TKN, NO3+NO2, NH3, and TSS.

  Sector W:     All facilities in this sector: NO3+NO2, TKN, NH3, TSS and total Zn.

  Sector Y:     Rubber products manufacturing: TSS, TKN, NO3+NO2, NH3, and total Hg.
                Miscellaneous plastics products:  NO3+NO2, NH3, TKN, TSS, and total Hg.

  Sector Z:     All facilities in this sector: COD, NO3+NO2, TKN, NH3, and TSS.
January 1999
                           23

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency


  Sector AA:   Metal products except coating:  TKN, NH3, and TSS;
                Metal coating & engraving:  shall monitor TKN, and NH3.

  Sector AC:   All facilities in this sector: total Al, total Zn and total Hg.

6.5    Texas

The State of Texas presents maximum allowable concentrations of various metals in discharges to inland and
tidal waters. While these are not compliance monitoring requirements, they are effluent limitations. More
information is provided at 60 FR 51260.

In addition, all facilities that have demonstrated significant lethality which has not been controlled must
continue to perform WET testing in accordance with the requirements set forth at 60 FR 51261.
   24                                                                                    January 1999

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NPDES Multi-Sector Storm Water General Permit Monitoring Guidance	U.S. Environmental Protection Agency

7.       WHERE  TO  SEND DISCHARGE MONITORING REPORTS

Completed DMRs should be  sent to the appropriate EPA Regional office mailing address (see Exhibit 8).
Please make sure to provide adequate postage.  In addition,  facilities located in Alaska, Arizona, Guam, and
New Mexico are required to  submit a copy of the DMR to their respective  state offices.  The permittee should
also retain a copy for his or her records.

                                                          EXHIBIT 8
                    EPA REGIONAL MAILING ADDRESSES AND PHONE NUMBERS
  Area of Coverage
Address
Storm Water Contact
  Region I: State lands in MA, ME, and NH;
  Federal Indian Reservations in CT, MA, ME and
  RI; Federal facilities in VT
U.S. Environmental Protection Agency, Region I
Office of Ecosystem Protection
Municipal Assistance Staff
JFK Federal Bldg - CMU
Boston, MA 02203
Thelma Hamilton
(617)565-3569
  Region II: State lands in PR; Federal facilities in
  PR
U.S. Environmental Protection Agency, Region II
Division of Environmental Planning and Protection
Water Program Branch
290 Broadway, 24th Floor
New York, NY 10007-1866
Sergio Bosques
(787)729-6951 (x.255)
  Region III: State lands in the District of Columbia;
  Federal facilities in District of Columbia, and DE
U.S. Environmental Protection Agency, Region III
Water Protection Division, (3WP30)
Storm Water Staff
841 Chestnut Building
Philadelphia, PA 19107
Mary Letzkus
(215)814-2087
  Region IV: State lands in FL; Federal Indian
  Reservations in FL
U.S. Environmental Protection Agency, Region IV
Water Management Division
Surface Water Permits Section (SWPFB)
61 Forsyth St., SW
Atlanta, GA 30303-3104
Michael Mitchell
(404)562-9303
  Region VI: State lands in MM1; and TX; Federal
  Indian Reservations in LA, NM (except Navajo
  and Ute Mountain Reservation lands — see Region
  IX), OK and TX; Oil & Gas Exploration Activities
  in OK (SIC 13XX)
U.S. Environmental Protection Agency, Region VI
Compliance Assurance and Enforcement Division
Water Enforcement Branch (6EN-W)
1445 Ross Avenue, Suite 1200
Dallas, TX 75202-2733
Brent Larson
(214)665-7523
  Region IX: State lands in AZ1, Guam1, Johnson
  Atoll, Midway Island, Wake Island; Federal Indian
  Reservations in AZ, CA and NV, the Goshute
  Reservation in UT, the Navajo Reservation in UT
  and NM, the Fort McDermitt Reservation in OR,
  the Duck Valley Reservation in ID; Federal
  facilities in AZ, Guam, Johnston Atoll, Midway
  Island and Wake Island
U.S. Environmental Protection Agency, Region IX
Water Management Division, (W-5-3)
Storm Water Staff
75 Hawthorne Street
San Francisco, CA 94105
Eugene Bromley
(415)744-1906
  Region X: State lands in AK1 and ID; Federal
  Indian Reservations in AK, ID (except Duck
  Valley Reservation lands — see Region IX), OR
  (except Fort McDermitt Reservation lands — see
  Region IX) and WA; Federal facilities in WA
U.S. Environmental Protection Agency, Region X
Office of Water (OW-130)
Storm Water Staff
1200 Sixth Avenue
Seattle, WA 98101
Joe Wallace
(202)553-8399
1  NOTE:  DMR materials must be sent to the EPA Regional office and a copy must be sent to the following corresponding state offices:
  AK:  Alaska Department of Environmental Conservation, Major Facilities & Water Permits Section, 410 Willoughby Avenue, Suite #105, Juneau, AK 990801, or
       Alaska Department of Environmental Conservation, Major Facilities & Water Permits Section, 555 Cordova Street, Anchorage, AK 99503, or Alaska
       Department of Environmental Conservation, Major Facilities & Water Permits Section, 610 University Avenue, Fairbanks, AK 99709-3643
  AZ:  Storm Water Coordinator/DMR, Arizona Department of Environmental Quality, 3303 N.Central Avenue, Phoenix, AZ 85012
  GU:  Guam Environmental Protection Agency, P.O. Box 22439 GMF, Barrigada, Guam 96921
  NM:  Program Manager, Point Source Regulation Section, Surface Water Quality Bureau, New Mexico Environment Department, 1190 St. Francis Drive, Santa Fe,
       NM 87504-0968
January 1999
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