## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

1 State /

Permit WQBEL Provision

CA

CAG990006 Aquatic
Animal
Invasive Species http://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2011/wqo2011_0003.pdf

II. A. General Permit Coverage This General Permit covers the point source discharge of pesticide residues resulting from direct applications for aquatic an imal invasive species control using pesticides* containing sodium hypochlorite. State Water Board staff’s review of DPR’s database found th at sodium hypochlorite is the only active ingredient used in pesticide products for the control of invasive mollusks. Users of products containing sodium hypochlorite for the control of aquatic animal invasive species are required to obtain coverage under this General Per mit prior to application. Attachment E, which is a part of this General Permit, lists products contai ning this active ingredient.

IV. DISCHARGE PROHIBITIONS

A. The discharge of residual pesticides at a location or in a manner different from that described in this General Permit is pro hibited.

B. The discharge of residual pesticides shall not create a nuisance as defined in section 13050 of the California Water Code.

C. The discharge of residual pesticides shall not cause, have a reasonable potential to cause, or contribute to an in

- stream excursi on above any applicable standard or criterion promulgated by U.S. EPA pursuant to Section 303 of the CWA, or water quality objec tive adopted by the State or Regional Water Boards. This prohibition shall apply outside the treatment area during treatment, an d in the treatment area after treatment has been completed.

V. EFFLUENT LIMITATIONS

A. The discharge of residual pesticides must meet applicable water quality standards; and

B. Dischargers shall implement BMPs when applying pesticides. The BMPs must be provided in the APAP, which is described in Section

VII.C.

VI. RECEIVING WATER LIMITATIONS The discharge shall not result in any of the following:

A. Floating Material. Floating material to be present in amounts that cause nuisance or adversely affect beneficial uses.

B. Settleable Substances. Substances to be present in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses.

C. Suspended Material. Suspended material to be present in concent rations that cause nuisance or adversely affect beneficial uses.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

2 State /

Permit WQBEL Provision

D. Taste and Odors. Taste

- or odor

- producing substances to be present in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or t hat cause nuisance, or otherwise adversely affect beneficial uses or domestic or municipal water supplies.

E. Toxic Pollutants. Toxic pollutants to be present in the water column, sediments, or biota in concentrations that adversely affect
beneficial uses ; that produce detrimental response in human, plant, animal, or aquatic life; or that bioaccumulate in aquatic resources
at levels which are harmful to human health.

F. Temperature. The ambient temperature to increase more than 5oF.

G. Color. Estheticall y undesirable discoloration.

H. Aquatic Communities. Aquatic communities and populations, including native vertebrates, invertebrates, and plant species to be degraded unless the aquatic animal invasive species to be controlled coexist with the aquatic community and project goal is t o restore
the native asse mblage.

I. The numeric Receiving Water Limitations shown in Table 3 below will be used to assess compliance of residual pesticide discha rges resulting from pesticide applications used to control animal aquatic invasive species.

Table 3. Receiving Water Limitations

Constituent Limitation Basis

Chlorine 10 ug/l

- Monthly Average U.S. EPA's Ambient Water Quality Criteria for Freshwater Aquatic Life Protection

Chlorine 20 ug/l

- Daily

Maximum U.S. EPA's Ambient Water Quality Criteria for Freshwater Aquatic Life Protection

Chlorine <10 ug/l

- Daily

Maximum California Ocean Plan

VIII. C. Special Provisions, 1 . Reopener Provisions

d. Receiving Water Limitations . This General Permit may be re

- opened to add or modify receiving water limitations in Table 3 if additional constituents are added from pesticide product additions or accuracy of constituent analyzing technology allows for implementation of more protectiv e limitations.

g. This General Permit may be reopened and modified to incorporate toxicity monitoring requirements if the State Water Board

- funded toxicity study demonstrates probable toxicity for particular pesticide ingredients. [balance omitted here]

Fact Sheet

VII.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

3 State /

Permit WQBEL Provision

A. Effluent Monitoring Pursuant to the requirements of 40 C.F.R. § 122.44(i) effluent monitoring is required for all constituents with effluent limi tations. Effluent monitoring is necessary to assess compliance with effluent limitations, assess the effectiveness of the treatment process, and to assess the impacts of the discharge on the receiving water and groundwater.

The application of pesticides for aquatic animal invasive species control is not necessarily considered a discharge of pollut ants according
to the National Cotton Council of America v. U.S. EPA decision and other applicable case law. The regulated discharge is the discharge of residual pesticides. At what point the pesticide becomes a residue is not precisely known. Therefore, in the application of p esticides,
the exact effluent is unknown. Thus, effluent monitoring requirement is not applicable for applications of pesticides for aquatic animal invasive species control.

B. Toxicity Testing Requirements The State Water Board, pursuant to the Porter

- Cologne Act and the federal Clean Water Act, customarily requires the discharger to conduct toxicity monitoring. In fact, both Acts anticipate discharger self

- monitoring. For purposes of this General Permit, the State Water Board will require some monitoring by discharger s, but will initially fund toxicity studies using funds available to the Board. This decision is based on the unique circumstances of these permits; the unique purposes and application of these pesticide discha rges; and the public health benefits for the p esticide application. The General Permit will include a reopener in the event subsequent studies indicate the presence of toxicity.

CA

CAG990007 Biological and
residual pesticide discharge from spray application http://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2011/wqo2011_0004.pdf

II. A. General Permit Coverage Except for disc harges on tribal lands which are regulated by a federal permit, this General Permit covers the point source* discharge of biological and residual pesticides resulting from spray applications using the following: acetamiprid, aminopyralid, Bacillus thuringi ensis kurstaki (Btk), carbaryl, chlorsulfuron, clopyralid, cyfluthrin, dinotefuran, glyphosate, imazapyr, imidacloprid, malathion, naled, nuclear polyhedrosis virus (NPV), pheromone, pyrethrins, Spinosad A and D, triclopyr butoxyethyl ester (BEE) and tricl opyr triethylamine salt (TEA). Attachment E, which is a part of this General Permit, lists the products containing these active ingredients.

IV. DISCHARGE PROHIBITIONS

A. The discharge of biological and residual pesticides at a location or in a manner dif ferent from that described in this General Permit is prohibited.

B. The discharge of biological and residual pesticides shall not create a nuisance as defined in section 13050 of the California Water
Code.

C. The discharge shall not cause, have a reasonabl e potential to cause, or contribute to an in

- stream excursion above any applicable standard or criterion promulgated by U.S. EPA pursuant to section 303 of the CWA, or water quality objective adopted by the S tate or Regional Water Boards.

V. EFFLUENT LIMI TATIONS

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

4 State /

Permit WQBEL Provision

A. The discharge of biological and residual pesticides must meet applicable water quality standards; and

B. Dischargers shall implement BMPs when applying pesticides. The BMPs must be provided in the PAP which is described in Section
VIII.C below.

VI. RECEIVING WATER LIMITATIONS The discharges shall not result in any of the following:

A. Cause or contribute to an exceedance of the following in the receiving water:

Table 3. Receiving Water Limitation

Ingredient Unit Instantaneous Maximum
Malathion μg/L 0.1

B. Floating Material. Floating material to be present in the amounts that cause nuisance or adversely affect beneficial uses.

C. Settleable Substances. Substances to be present in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses.

D. Suspended Material. Suspended material to be present in concentrations that cause nuisance or adversely affect beneficial uses.

E. Taste and Odors. Taste

- or odor

- producing substances to be present in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that caus e nuisance, or otherwise adversely affect beneficial uses or domestic or municipal water supplies.

F. Toxic Poll utants. Toxic pollutants to be present in the water column, sediments, or biota in concentrations that adversely affect beneficial uses; that produce detrimental response in human, plant, animal, or aquatic life; or that bioaccumulate in aquatic resources at levels which are harmful to human health.

G. Temperature. The ambient temperature to increase more than 5oF.

H. Color. Esthetically undesirable discoloration.

I. Aquatic Communities. Aquatic communities and populations, including vertebrates, invertebrates, and plant species to be degraded.

VII. RECEIVING WATER MONITORING TRIGGERS The Receiving Water Monitoring Triggers shown in Table 4 below will be used to assess compliance with the narrative receiving water toxicity limitation and initiate additional investigations for the toxicity caused by the residual pesticides used and their additive or synergistic effects.

Table 4. Receiving water monitoring triggers

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

5 State /

Permit WQBEL Provision

Ingredient Unit Instantaneous
Maximum Monitoring Trigger Basis

Insecticide Active Ingredient Acetamiprid μg/L 6.6 U.S. EPA Office of Pesticides Ecotoxicity Database Carbaryl 2.53 California Department Fish and

Game Criterion Cyfluthrin μg/L 0.00022 U.S. EPA Office of Pesticides Ecotoxicity Database
Dinotefuran μg/L 79 U.S. EPA Office of Pesticides Ecotoxicity Database Imidacloprid μg/L 3.8 U.S. EPA Office of Pesticides Ecotoxicity Database
Naled μg/L 0.014 U.S. EPA Office of Pesticides Ecotoxicity Database Herbicide Active Ingredients Pyrethrins μg/L 0.14 U.S. EPA Office of Pesticides Ecotoxicity Database Clopyralid μg/L 2,874 U.S. EPA Office of Pesticides Ecotoxicity Database Glyphosate μg/L 700 U.S. EPA primary MCL for protection of drinking water quality Triclopyr Butoxyethyl

Ester μg/L 36 U.S. EPA Office of Pesticides Ecotoxicity Database

Fact Sheet

Acute and Chronic Toxicity (pg D

- 55) The narrative toxicity objective contained in the Regional Water Boards’ Basin Plans states that “All waters shall be maintai ned free of

toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life.” For compliance with that objective, this General Permit contains a receiving water limitation for toxicity and requires the Disch arger to implement BMPs to identify corrective actions to reduce or eliminate any toxicity caused by biological and residual pesticide s from spray applications for pest control.

VII

B

. Toxicity Testing Requirements

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

6 State /

Permit WQBEL Provision

The State Water Board, pursuant to the Porter

- Cologne Act and the federal Clean Water Act, customarily requires the discharger to conduct toxicity monitoring. In fact, both Acts anticipate discharger self

- monitoring. For purposes of this General Permit, the State Water Board will require some monitori ng by Dischargers, but will initially fund toxicity studies using funds available to the Board. This decision is based on the unique circumstances of these permits; the fact that inactive ingredients are customarily inert; tha t available
data to DPR indica te the inactive ingredients are unlikely to be toxic in toxic amounts; the unique purposes and application of these pesticide discharges; and the public health benefits for the pesticide application. The General Permit will include a reopene r in the

event subsequent studies indicate the presence of toxicity.

CA

CAG990004
General

NPDES
Permit for Biological and
Residual
Pesticide Discharges

From Vector
Control http://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2011/wqo2011_0002.pdf

II. A. General Permit Coverage This General Permit covers the point source discharge of biological and residual pesticides resulting from direct and spray a pplications for vector control using: 1) larvicides containing monomolecular films, methoprene, Bacillus thuringiensis subspecies isralensis (or Bti ), Bacillus sphaericus (or B. Sphaericus ), temephos, petroleum distillates, or spinosad; and 2) adulticides containing malathion, naled, pyrethrin, permethrin, resmethrin, sumithrin, prallethrin, piperonyl butoxide (PBO), etofenprox, or N

- octyl bicycloheptene dicarboximide (or MGK

- 264). Users of products containing these active ingredients are required to obtain coverage under this General Permit prior to applicatio n to waters of the US. This General Permit only covers the discharge of lar vicides and adulticides that are currently registered in California. Attachments E and F6 list the currently registered products containing these active ingredients.

IV. DISCHARGE PROHIBITIONS

A. The discharge of biological and residual pesticides at a l ocation or in a manner different from that described in this General Permit is prohibited.

B. The discharge of biological and residual pesticides shall not create a nuisance as defined in section 13050 of the California Water
Code.

C. The discharge of bi ological and residual pesticides from larvicide and adulticide applications for vector control shall not cause, have a reasonable potential to cause, or contribute to an in

- stream excursion above any applicable standard or criterion promulgated by U.S.

EPA pursuant to Section 303 of the CWA, or water quality objective adopted by the State or Regional Water Boards. For larvicide applications, this prohibition shall apply outside the treatment area during treatment, and in the treatment area after treat ment h as been completed.

V. EFFLUENT LIMITATIONS

A. The discharge of biological and residual pesticides must meet applicable water quality standards; and

B. Dischargers shall implement BMPs when applying pesticides. The BMPs must be provided in the PAP, whic h is described in Section

VIII.C

.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

7 State /

Permit WQBEL Provision

VI. RECEIVING WATER LIMITATIONS The discharge shall not result in any of the following:

A. Cause or contribute to an exceedance of the numeric Receiving Water Limitation shown in Table 3 below.

Table 3. Receiving Water Limitation Ingredient Unit Instantaneous Maximum Basis
Malathion μg/L 0.1 U.S. EPA’s Ambient Water Quality Criteria

B. Floating Material. Floating material to be present in amounts that cause nuisance or adversely affect beneficial uses.

C. Settl eable Substances. Substances to be present in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses.

D. Suspended Material. Suspended material to be present in concentrations that cause nuisance or adversely affect beneficial uses.

E. Taste and Odors. Taste

- or odor

- producing substances to be present in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance, or othe rwise adversely affect beneficial uses or domestic or municipal water supplies.

F. Toxic Pollutants. Toxic pollutants to be present in the water column, sediments, or biota in concentrations that adversely affect beneficial uses; that produce detrimental response in human, plant, animal, or aquatic life; or that bioaccumulate in aquatic resources
at levels which are harmful to human health.

G. Temperature. The ambient temperature to increase more than 5oF.

H. Color. Esthetically undesirable discoloration.

I. Aquatic Communities. Aquatic communities and populations, including vertebrates, invertebrates, and plant species to be degraded, except for target species.

VII. RECEIVING WATER MONITORING TRIGGERS
The Receivi ng Water Monitoring Triggers shown in Table 4 below will be used to assess whether the discharge of residual pesticides has the reasonable potential to cause or contribute to an excursion of a water quality standard, including numeric and narrative objecti ves within a standard.

Table 4. Receiving Water Monitoring Triggers

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

8 State /

Permit WQBEL Provision

Ingredients Units Instantaneous Maximum Monitoring Triggers Basis

Temephos μg/L 8 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

Naled μg/L 0.014 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database Pyrethrin μg/L 0.14 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

Permethrin μg/L 0.03 California Department of Fish
and Game’s Ambient Criterion

Resmethrin μg/L 0.028 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

Sumithrin μg/L 0.0025 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

Prallethrin μg/L 0.39 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database Piperonyl Butoxide (PBO) μg/L 49 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database PBO (in PBO/Resmethrin Mixture) μg/L 0.13 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

PBO (in PBO/Pyrethrin Mixture) μg/L 0.014 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

Etofenprox μg/L 0.0019 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

MGK

- 264 μg/L 16.9 U.S. EPA’s Office of Pesticides’ Ecotoxicity Database

C. Special Provisions 1. Reopener Provisions

d. Receiving Water Limitations . If monitoring data for residual pesticides show exceedance of monitoring triggers, the Discharger or Coalition shall conduct additional investigations to determine the cause of exceedance. At a minimum, the Discharger shall ev aluate its application metho ds, BMPs, and the appropriateness of using alternative products. As a result of the evaluation, this General Permit may be re

- opened to add numeric Receiving Water Limitations for the residual pesticides exceeding the triggers.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

9 State /

Permit WQBEL Provision

2. Special Studies, Techn ical Reports, and Additional Monitoring Requirements Each Discharger must conduct additional investigations when toxicity testing shows toxicity or increased toxicity in the rece iving water, or when the chemical monitoring shows exceedance of any monitori ng trigger. The additional investigations shall identify corrective actions to eliminate toxicity and or exceedance of monitoring trigger caused by the pesticide application. The investigation should include, but not be limited to, revising and improving t he existing BMPs, revising mode of application, using less toxic pesticide products or selecting alternative methods for pest control.

FACT SHEET

VII A. Effluent Monitoring. Pursuant to the requirements of 40 C.F.R. § 122.44(i) effluent monitoring is required for all constituents with effluent limi tations. Effluent monitoring is necessary to assess compliance with effluent limitations, assess the effectiveness of the treatment process, and to assess the impacts of the discharge on the receiving water and groundwater The application of pesticides for vector control is not necessarily considered a discharge of pollutants according to the National Cotton Council of America v. U.S. EPA decision and other applicable case law. The regulated discharge is the discharge of biological and residual pesticides. At what point the pestic ide becomes a residue is not precisely known. Therefore, in the application of pesticides, the exact efflue nt is unknown. Thus, effluent monitoring requirement is not applicable for applications of pesticides for vector control.

B. Toxicity Testing Requirements The State Water Board, pursuant to the Porter

- Cologne Act and the federal Clean Water Act, customarily requires the discharger to conduct toxicity monitoring. In fact, both Acts anticipate discharger self

- monitoring. For purposes of this General Permit, the State Water Board will require some monitoring by dischargers, but will initially fund to xicity studies using funds available to the Board. This decision is based on the unique circumstances of these permits; the fact that inactive ingredients are customarily inert; tha t available data to DPR indicate the inactive ingredients are unlikely to b e toxic in toxic amounts; the unique purposes and application of these pesticide discharges; and the public health benefits for the pesticide application. The General Permit will include a reopene r in the event subsequent studies indicate the presence of t oxicity.

CA

CAG990005
General

NPDES
Permit for
Residual Aquatic
Pesticide Discharges From Algae http://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2013/wqo2013_0002dwq.pdf

II. PERMIT COVERAGE AND APPLICATION REQUIREMENTS A. General Permit Coverage Except for discharges on tribal lands that are regulated by a federal permit, this General Permit covers the point source* discharge to waters of the United States of residues resulting from pesticide applications using products containing 2,4

- D, acrolein, copper, diquat, endothall, fluridone, glyphosate, imazamox, i mazapyr, penoxsulam, sodium carbonate peroxyhydrate, and triclopyr

- based algaecides and aquatic herbicides, and adjuvants containing ingredients represented by the surrogate nonylphenol. This General Permit co vers only discharges of algaecides, and aquatic herbicides that are currently registered for use in California, or that become registered for
use and contain the above

- listed active ingredients and ingredients represented by the surrogate of nonylphenol.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

10 State /

Permit WQBEL Provision

and Aquatic
Weed Control Applications (eff 12/1/13) IV. DISCHARGE PROHIBITIONS

A. The discharge of residual algaecides and aquatic herbicides in a manner different from that described in this General Permit is prohibited.

B. The discharge of residual algaecides and aquatic herbicides shall not create a nuisance as defined in section 13050 of the Calif ornia
Water Code.

C. The discharge shall not cause, have a reasonable potential to cause, or contribute to an in

- stream excursion above any applicable standard or criterion promulgated by U.S. EPA pursuant to section 303 of the CWA, or water quality objec tive adopted by the State or Regional Water Boards.

D. All pesticides are prohibited from the waters of the Lahontan Region (Region 6). The use of this permit is invalid in the Lahontan Region unless the discharger has requested a prohibition exemption fr om the Lahontan Water Board and the Lahontan Water Board has granted an exemption for the use of algaecides or aquatic herbicides.

V. EFFLUENT LIMITATIONS A. The discharge of residual algaecides and aquatic herbicides must meet applicable water quality standards; and

B. Dischargers shall implement Best Management Practices (BMPs) when applying aquatic algaecides and aquatic herbicides. The BMPs must be prov ided in the APAP which is described in Section VIII.C below.

VI. RECEIVING WATER LIMITATIONS The discharge shall not result in any of the following: A. The discharge of residual algaecides and aquatic herbicides shall not cause or contribute to an exce edance of the following limitations in the receiving water:*

Table 3. Receiving Water Limitations Constituent/

Parameter BENEFICIAL USE 1 Basis

MUN, μg/L WARM or

COLD, μg/L Other than MUN,

WARM, or COLD, μg/L All Designations

2,4

- D 70 U.S. EPA MCL
Acrolein 2 320 21 780 U.S. EPA Water Quality Criteria,

1986. Copper 2 Dissolved
Freshwater 3 Copper Chronic = 0.960exp{0.8545 California Toxics

Rule

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

11 State /

Permit WQBEL Provision

[ln(hardness 4 )]

– 1.702} 5, 6

Dissolved
saltwater3 Copper Chronic = 0.83exp{0.8545 [ln(hardness4)]

– 1.702} 5,6 Diquat 20 U.S. EPA MCL
Endothall 100 U.S. EPA MCL
Fluridone 560 U.S. EPA Integrated
Risk Information System Glyphosate 700 U.S. EPA MCL Nonylphenol Freshwater Chronic Criterion = 6.6 μg/L

Saltwater Chronic Criterion = 1.7 μg/L U.S. EPA National

Recommended
Ambient Water Quality Criteria

Toxicity Algaecide and aquatic herbicide applications shall not cause or contribute to toxicity in

receiving water(s). Regional Water
Boards’ Basin Plans

Notes: 1. See Regional Water Boards’ Water Quality Control Plans (Basin Plans) for beneficial use definiti ons. 2. Public entities and mutual water companies* listed in Attachment G are not required to meet these limitations in receiving waters during the exception period described in the APAP and Section VIII.C.10 below. 3. For waters in which the salinity i s equal to or less than 1 part per thousand 95% or more of the time, the freshwater criteria apply. For waters in which the salinity is equal to or greater than 10 parts per thousand 95% or more of the time, saltwater criteri a apply. For
waters in which th e salinity is between 1 and 10 parts per thousand, the applicable criteria are the more stringent of the freshwater or
saltwater criteria. 4. For freshwater aquatic life criteria, waters with a hardness 400 mg/L or less as calcium carbonate, the actual ambient har dness of surface water shall be used. For waters with a hardness of over 400 mg/L as calcium carbonate, a hardness of 400 mg/L as c alcium
carbonate shall be used with a default Water

- Effect Ratio of 1. 5. Values should be rounded to two significant figures. 6. This limitation does not apply to the Sacramento River and its tributaries above the State Highway 32 Bridge at Hamilton C it y. See
Table III

- 1 of the Basin Plan for the Sacramento and San Joaquin River Basins for copper limitation.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

12 State /

Permit WQBEL Provision

B. Dissolved Oxygen. Dissolved oxygen to be below the Regional Water Board Basin Plans’ dissolved oxygen objectives for the receiving

water.

C. F loating Material. Floating material to be present in the amounts that cause nuisance or adversely affect beneficial uses.

D. Settleable Substances. Settleable substances to be present in concentrations that result in the deposition of material that cause s nuisance or adversely affects beneficial uses.

E. Suspended Material. Suspended material to be present in concentrations that cause nuisance or adversely affect beneficial uses.

F. Taste and Odors. Taste

- or odor

- producing substances to be present in c oncentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance, or otherwise adversely affect beneficial uses or do mestic or municipal water supplies.

G. Toxic Pollutants. Toxic pollu tants to be present in the water column, sediments, or biota in concentrations that adversely affect beneficial uses; that produce detrimental response in human, plant, animal, or aquatic life; or that bioaccumulate in aquatic resources at levels which are harmful to human health.

H. Color. Esthetically undesirable discoloration.

I. Aquatic Communities. Aquatic communities and populations, including vertebrates, invertebrates, and non

- target plant species to be degraded.

VII. RECEIVING WATER MONITORING TRIGGERS In the absence of Receiving Water Limitations, the Receiving Water Monitoring Triggers shown in Table 4 below will be used to assess compliance with the narrative receiving water toxicity limitation. However, exceeding the monitoring trigger does not constitute a violation of this General Permit as long as the Discharger performs the following actions: (1) initiates additional investiga tions for the cause of the exceedance; (2) implements additional BMPs to red uce the algaecide and aquatic herbicide residue concentration to be below the monitoring triggers in future applications; and (3) evaluates the appropriateness of using alternative products.

Table 4. Receiving Water Monitoring Triggers Ingredient Unit Ins tantaneous Maximum Monitoring Trigger Basis

Imazapyr Mg/L 11.2 U.S. EPA Office of Pesticides Ecotoxicity Database Triclopyr Triethylamine Mg/L 13.0 U.S. EPA Office of Pesticides Ecotoxicity Database

FACT SHEET

VII

.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

13 State /

Permit WQBEL Provision

C. Toxicity Testing Requirements The State Water Board, pursuant to the Porter

- Cologne Act and the federal CWA, customarily requires the Discharger to conduct toxicity monitoring. In fact, both Acts anticipate Discharger self

- monitoring. However, this General Permit does not require toxic ity testing based on the 2004 toxicity study funded by the State Water Board and data collected from 2004 to 2008. The toxicity s tudy found the following: (1) There was no toxicity with the use of 2,4

- D, glyphosate, and triclopyr; (2) Toxicity testing was difficult for acrolein due to its volatility; (3) Results were inconclusive for diquat and fluridone; and (4) Peak copper concentrations di d not exceed toxicity values. The monitoring data collected under Order No. 2004

- 0009

- DWQ from 2004 to 2008 showed th at all constituent concentrations from post

- event application samples were below receiving water limitations except for the following: three exceedances each for acrolein and glyphosate and 82 exceedances for copper out of 288 monitoring events. For glypho sate, it is likely that the three exceedances were not the result of aquatic herbicide applications because the pre

- application samples also showed exceedances and the remaining 151 samples showed no exceedance. For copper, 43 of the 82 exceedances were fr om public agencies or mutual water companies that were excepted from meeting priority pollutant limitations during the exception period. The Policy allows the e xception. Thus, staff did not consider these exceedances as violations of the receiving water li mitations. However, 39 of the exceedances were from entities that did not have a Policy exception. Although staff considered these exceedances as true violations of the rec eiving water limitations, staff is not aware of any long

- term impacts from these exc eedances. Long

- term impacts from exceedances are likely not going to occur for the following reasons: (1) water quality criteria, which are used directly as receiving water limitations in this General Permit, have built

- in factors of safety; (2) as shown i n the 2004 toxicity study, the actual peak concentrations after applications of copper did not exceed toxicity values; and (3) the applications are short

- term in duration. All of the foregoing information indicates that widespread acute ecosystem impacts w ill not occur from algaecide or aquatic herbicides applied according to their label instructions and requirements of this General Permit. Therefore, toxicity monitoring requirements are not necessary.

KY

KYG990000
General
Permit for
Pesticide Applicatio n http://water.ky.gov/permitting/Documents/Final%20Pesticides%20Permit%20RTC%20KYG990000.pdf

3.0 WATER QUALITY BASED EFFLUENT LIMITATIONS

3.1 Applicable Water Quality Standards Surface waters shall not be aesthetically or otherwise degraded by substances that:

• Settle to form objectionable deposits • Float as debris, scum, oil, or other matter to form a nuisance • Produce objectionable color, odor, taste, or turbidity • Injure, are chronically or acutely toxic to or produce adverse physiological or behavioral responses in humans, animals, fi sh, and other aquatic life • Produce undesirable aquatic life or result in the dominance of nuisance spec ies • Cause fish flesh tainting

Any discharge that causes or contributes to an excursion of a narrative water quality standard is prohibited and is a violati on of this permit.

MD http://mde.maryland.gov/programs/Permits/WaterManagementPermits/WaterDischargePermitApplications/Documents/PGP%20Final

%20Permit%20April%208%202011.pdf

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

14 State /

Permit WQBEL Provision

MDG87
General
Permit for Discharges
from the Application
of Pesticides (10/31/ 2011) B. Water Quality

- Based Effluent Limitations

The discharge must be controlled as necessary to meet appli cable numeric and narrative Maryland water quality standards. If at any time the operator becomes aware, or the Department determines, that the discharge causes or contributes to an excursion of applicable water quality standards, the operator shall take c orrective action as required in Part III.E.

Operators that treat water supply impoundments that are over a half mile long with copper compounds shall not raise copper concentrations above the State water quality criteria (9 ug/l) below the outlet of the i mpoundment and in over one third the cross

sectional area of the impoundment.

Operators that treat water supply impoundments that are under a half mile long with copper compounds shall not raise copper concentrations above the State water quality criteria below the outlet of the impoundment only.

C. Monitoring Requirements 1. Monitoring Requirements for Pesticide Applicators

a. The operator must monitor the amount of pesticide applied to ensure that the operator is using the lowest amount to effect ively control the pest, consistent with reducing the potential for development of pest resistance. b. The operator must also monitor the pesticide application activities to ensure the operator is performing regular maintenan ce activities and to ensure that the a pplication equipment is in proper operating condition to reduce the potential for leaks, spills, or other unintended discharge of pesticides to waters of the State. c. The operator must monitor the pesticide application activities to ensure that the applic ation equipment is in proper operating condition by adhering to any manufacturer’s conditions and industry practices, and by calibrating, cleaning, and repairing eq uipment on a regular basis.

2. Visual Monitoring Requirements for all Operators. All operat ors covered under this permit must conduct a visual monitoring assessment (i.e. spot checks in the area to and around where pesticides are applied) for possible and observable adverse inci dents, as defined in Part II.C, caused by application of pesticides, including but not limited to the unanticipated death or distress of non

- target organisms and disruption of wildlife habitat, recreational or municipal water use. Visual assessments of the application site must be performed: a. During any post

- application surveillance or efficacy check that one conducts, if surveillance or an efficacy check is conducted. b. During any pesticide application, when considerations for safety and feasibility allow.

ME

MEG140000 Application of aquatic pesticides for
control of http://www3.epa.gov/region1/npdes/permits/2015/finalmeg140000permit.pdf

C. Applicability and Eligibility

4. Exclusions and restric tions. Authorized aquatic pesticides must be applied in compliance with federal labeling restrictions and in compliance with applicable statute, Board of Pesticides Control rules and best management practices. Aerial spraying from air craft is
not a method that ma y be used under this General Permit.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

15 State /

Permit WQBEL Provision

mosquito
borne
diseases (7/17/2015) E. AUTHORIZED DISCHARGES

A permittee covered under this General Permit is authorized to discharge: 1) only in accordance with Special Conditions C, E, and F of this General Permit if not required to submit a NOI for approval; 2) only in accordance with the permittee's Notice of intent if required to submit a NOI for approval; and 3) only in accordance with the terms and conditions of this General Permit. Discharges of p ollutants other than the low risk aquatic pestici des as identified in the Maine Department of Agriculture, Conservation and Forestry's Plan to Protect the Public Health from Mosquito

- borne Diseases or as approved based on information provided on an applicant's NOI are not
authorized under this General Pe rmit, and must be reported in accordance with Standard Condition B( 5), Bypasses, of Maine Pollutant Discharge Elimination System Permit Standard Conditions Applicable To All Permits, revised July I, 2002, attached to this General Permit.

F. NARRATIVE EFFL UENT LIMITATIONS

1. An entity covered under this General Permit must not discharge pollutants that cause a visible oil sheen, foam or floating solids at any time which would impair the uses designated for the classification of waters of the State beyond the project area.

2. An entity covered under this General Permit must not discharge pollutants that contain materials in concentrations or comb inations which are hazardous or toxic to aquatic life, or which would impair the uses designated for the classification of waters o f the State beyond the project area.

3. An entity covered under this General Permit must not discharge pollutants that cause visible discoloration or turbidity in waters of the State beyond the project area that causes those waters to be unsuitable for th e designated uses and characteristics ascribed to
their class.

4. An entity covered under this General Permit must not discharge pollutants that that lower the quality of any water of the State beyond the project area below such classification, or lowers the existing quality of any water of the State beyond the project area if the existing quality is higher than the classification.

ME

MEG150000 Application
of Herbicides
for Control of
Invasive Aquatic
Plants (10/4/2011) http://www3.epa.gov/region1/npdes/permits/2011/MEG150000.pdf

C. Applicability and Coverage

4 Concentrations and Application Rates. Maximum application rates and water concentrations shall comply with amounts specified on USEPA registered product labels and as specified in this permit. The IASP will calculate actual dosages based upon the partic ular species pursuant to the table of target concentrations in the Fact Sheet, degree of spread, site conditions, and other appropriate factors, and shall supply this information with the NOI. The IASP shall comply with all applicable state laws.

D. DISCHARGE CONCENTRATION LIMITS: In conducting an approved invasive plant treatment program, herbicide concentrations developed in the waterbody shall at no time exceed USEPA approved label rates. To achieve greater protection of non

- target organisms and resources while still achieving

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

16 State /

Permit WQBEL Provision

treatment efficacy, application rates of herbicides will be designed to not exceed the following concentrations which are all at or below label rates, as described in the Fact Sheet.

Table 1. Maximum volume

- weighted concentration for authorized herbicides.

Herbicides 2, 4

- D

Liq or Solid

AE Diquat

Liq, Cation Equivalent Endothall

Liq or Soli d

AE Fluridone

Liquid

AE Fluridone

Solid

AE Triclopyr

Liq or Solid

AE

Max Permit

Conc. 4.0 ppm 0.35 ppm 5.0 ppm 0.05 ppm 0.06 ppm 2.5 ppm

Aquatic plants designated by the Department as invasive after the effective date of this permit pursuant to 38 M.R.S.A. §466, sub

- §8

- A may be treated with an authorized herbicide provided that at no time shall the concentration exceed the highest specified for any of
the herbicides in
Table 1.

E. MONITORING

1. Herbicide Concentration Monitoring. Unless otherwise designated in the NOI, herbicide sampling will occur at location(s) below and as specified on a map submitted with the NOI. Monitoring regimes are determined by general treatment type and include the fol lowing:

a. Whole Lake Treatment: The IASP shall moni tor treated waters according to the schedule in Table 2 below to track herbicide concentrations and dissipation rates to ensure accurate and effective application. Sample collection shall occur at the most representative location, usually at the deepest pa rt of the treated waterbody.

b. Spot or area treatment: The IASP shall monitor treated waters according to the schedule in Table 2 below to track herbicid e concentrations and dissipation rates to ensure accurate and effective application. Sample collectio n shall occur within the treated area at a location(s) representative of the characteristics (depth, density of plant growth, substrate) of the treated area. For t reatment programs with multiple treatment areas, no more than three individual treatment area s within the waterbody must be monitored.

[Table 2 omitted here. Tables 2 species for each of 5 herbicides timing, type and location of first, second and ongoing sampl ing].

2. Water Quality Monitoring. The IASP will sample lake water quality at least twi ce per field season (once in May or June and once in August or September) in which a whole

- lake treatment occurs for the following parameters: temperature

- oxygen profile, Secchi disk transparency, and total phosphorous.

Plant community monitoring also spe cified. (E.3).

ME http://www3.epa.gov/region1/npdes/permits/2014/finalmeg180000permit.pdf

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

17 State /

Permit WQBEL Provision

MEG180000
General
Permit for Application
of Pisicides
for Control of
Invasive
Fishes (8/29/2014) E. AUTHORIZED DISCHARGES

A permittee covered under this General Permit is authorized to discharge: 1) only in accordance with specific approval provid ed by the Department based on a n accepted Notice of Intent; and 2) only in accordance with the terms and conditions of this General Permit. Discharges of pollutants from any other point source are not authorized under this General Permit, and must be reported in ac cordance
with Standard Condition B(5), Bypasses , of Maine Pollutant Discharge Elimination System Permit Standard Conditions Applicable To All

Permits , revised July 1, 2002, attached to this General Permit.

F. NARRATIVE EFFLUENT LIMITATIONS 1. The permittee must not discharge pollutants that cause a visible oil sheen, foam or floating solids at any time which would impair the usages designated for the classification of waters of the State beyond the project area.

2. The permittee must not discharge pollutants that contain mat erials in concentrations or combinations which are hazardous or toxic to aquatic life, or which would impair the usages designated for the classification of waters of the State beyond the project area.

3. The permittee must not discharge pollutants that cause visible discoloration or turbidity in waters of the State beyond the project area that causes those waters to be unsuitable for the designated uses and characteristics ascribed to their class.

4. The permittee must not discharge pollutants that that lower the quality of any water of the State beyond the project area below such classification, or lowers the existing quality of any water of the State beyond the project area if the existing quality is higher than the
classification.

H. AMBIENT WATER QUALITY MONITORING The permittee must develop an ambient water quality monitoring plan for the treatment area and the project area that incorpor ates conditions for biological monitoring, water quality monitoring, and in

- stream piscicide concentration monitoring. All proposed sampling locations must be labeled and denoted on a map included as part of the ambient water quality monitoring plan. The ambient wat er quality monitoring plan is subject to revie w and approval by the Department in its decision

- making authority on a Notice of Intent for coverage under this General Permit. Recent, relevant biological monitoring and water chemistry data may be proposed for consideration provided such data are represe ntative of conditions at the time the piscicide treatment plan is executed.

1. Biological monitoring. Biological monitoring must consist of a fish survey and an assessment for the presence of threatene d or endangered species that may be adversely affecte d by the treatment and measures proposed to protect threatened or endangered species.

2. Water quality. Water quality must consist of dissolved oxygen, water temperature profile, pH, alkalinity, conductivity, an d Secchi disk transparency for Class GPA wa ters.

3. Piscicide monitoring. Piscicide monitoring must consist of samples collected from the treatment area and project area, or in the alternative if direct analysis is not possible, through sentinel species cage(s) placed at representative locations within the treatment and project areas. Species utilized for sentinel monitoring must represent resident species within the project area.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

18 State /

Permit WQBEL Provision

[Sub

- sections 4 (Timing), 5 (Sampling Methodology) and 6 (Reporting) omitted here].

ME

MEG230000
General
Permit for the Discharge
of Pesticides (3/2/2015) http://www3.epa.gov/region1/npdes/permits/2015/finalmeg230000permit.pdf

C. APPLICABILITY AND COVERAGE

Coverage under this GP is limited to those receiving waters that conform to the Area of Coverage described below. Applicabili ty of

this GP is limited to activities that are in conformance with the terms and conditions of this GP.

1. Area of Coverage. The geo graphic area covered by this general permit is the entire State of Maine. This general permit covers application of pesticides by a licensed applicator for uses in proximity of fresh and marine waters of the State classified b y Maine's
water classification laws as Class GP A, Class AA, Class A, Class B, Class C, Class SA, Class SB or Class SC waters of the State, tributaries to Class GP A waters, and those waters having a drainage area of less than 10 square miles.

2. General Restrictions. Permittees covered by this GP shall use best management practices (BMPs) contained in the MBPC's most current guidance for successful treatment of target pest species while adhering to USEPA registered product label requirement s and limiting impacts to non

- target organisms a nd resources to the extent practicable. The Department may deny the application(s) of pesticides when it determines that proposed pesticide applications will be ineffective in controlling the target species, or that the methods and materials proposed do no t adequately ensure protection of non

- target resources or organisms.

F. NARRATIVE EFFLUENT LIMITATIONS

1. The effluent shall not contain a visible oil sheen, foam, or floating solids which would impair the uses designated for the classification of the receiving waters.

2. The effluent shall not contain materials in concentrations or combinations which are hazard ous or toxic to aquatic life; or which would impair the uses designated for the classification of the receiving waters.

3. The discharge shall not impart color, taste, turbidity, toxicity, radioactivity or other properties which cause those waters to be

unsu itable for the designated uses and characteristics ascribed to their class.

4. Notwithstanding specific conditions of this permit, the effluent must not lower the quality of any classified body of water b elow such classification, or lower the existing qualit y of any body of water if the existing quality is higher than the classification.

3.0 WATER QUALITY

- BASED EFFLUENT LIMITATIONS

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

19 State /

Permit WQBEL Provision

All Operators must control discharges as necessary to meet applicable numeric and narrative state water quality standards, fo r any discharges authorized under this pe r mit, with compliance required upon beginning such discharge.

If at any time an Operator becomes aware (e.g., through self

- monitoring or by notification from a state or federal agency), or the Department dete r mines, that the Operator's discharge causes or contributes to non

- attainment of any applicable water quality standard, the Operator must take corrective action as required in Part II §6, up to and including the ceasing of the discharg e, if

necessary.

4.0 MONITORING

4.1 Visual Monitoring Requirements for Pesticide Applicators

- During any pesticide application with discharges authorized under
this permit, all Applicators must, when considerations for safety and feasibility allow, visually assess the area to and around where
pesticides are applied for possible and observable adverse incidents, as defined in Part I B, caused by application of pestic ides,
including the unanticipated death or distress of non

- target organisms and disruption of wildlife habitat, r ecreational or municipal

water use.

4.2 Visual Monitoring Requirements for all Operators

- During any Operator post

- application surveillance of any pesticide application with discharges authorized under this permit, all Operators must visually assess the a rea to and around where pesticides were applied for possible and observable adverse incidents, as defined in Part I B, caused by application of pesticides, including the unanticipated death or distress of non

- target organisms and disruption of wildlife hab itat, recreational or municipal water use. Special Condition 8.0, Additional Monitoring Requirements, reserves the right, after notice to a permittee, for the Department to (1) control specific pollutants or conduct whole effluent toxicity where there is a reasonable potential that a discharge may cause or contribute to water quality criteria or water quality standards to be exceeded: (2) require additional monitoring if results on file are inconclusive; or (3) change monitoring requirements or limitations based on new information.

ND

NDG870000 Application
of Pesticides
to Waters of
the State http://www.ndhealth.gov/wq/sw/Z7_Publications/PesticideDischargeGeneralPermit.pdf

B. Water Quality

- Based Effluent Limitations Your discharge must be controlled as necessary to meet applicable numeric and narrative state water quality standards. If at any time you or the department becomes aware that your discharge causes or contributes to an excursion of applicable water quality sta ndards, you must take corrective action.

The State Water Quality Standards (NDAC 33

- 16

- 02.1) describe the numerical and gene ral narrative criteria that apply to all “waters of the state”. Numeric and narrative criteria are elements of the water quality standards which set limitations on the permissib le amounts
of a substance or other characteristics for waters of the state. The general narrative criteria, as described in the State Water Quality Standards, limit discharges to maintain aesthetics, color, turbidity, the biologic and aquatic community integrity, and many other elements in the receiving water body. Any noncompliance with the numerical or general narrative criteria is not authorized under this permit.

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

20 State /

Permit WQBEL Provision

The department has made the determination that the application of pesticides in accordance with controls required by this per mit, NDDA regulations and the pesticide labe ling will comply with State Water Quality Standards. However, any pesticide application which results in a long

- term or permanent impact on a water use may be subject to enforcement action and/or be required to obtain an individual permit under the NDPDES program.

C. Monitoring The permittees (operators) shall do the following: Monitor all pesticide application activities to ensure proper equipment operation and to obtain the information identified un der the recordkeeping requirements.

Visually monitor th e pesticide application area, where practical, for possible and observable adverse impacts caused by the pesticide application. If an adverse impact is observed provide a report as outlined in Part II.A, Incident Reporting.

NV

NVG870001
General
Pesticide
Permit (10/31/2011) http://ndep.nv.gov/docs_11/nvg870001_permit2011.pdf

B. DISCHARGE LIMITATIONS, REQUIREMENTS AND CONDITIONS

B.1. During the period beginning on the effective date of this general permit, and lasting until it expires, pesticide discharge a ctivities shall be limited and, as applicable, monitored by the operator as specified the sections below.

B.2. Minimize Pesticide Discharges to Waters of the U.S.: Operators shall minimize the discharge of pollutants resulting from the application of pesticides. Operators shall also do the following:

B.2.1. Use the amount of pesticide product per application and optimum frequency of pesticide applications necessary to control the
target pest

- this amount shall also be consistent with reducing the potential for development of pest resistance;

B.2.2. Perform regular maintenance activities to reduce leaks, spills, or other unintended d ischarges of pesticides associated with the application of pesticides covered under this permit; and

B.2.3. Maintain pesticide application equipment in proper operating condition by adhering to any manufacturer’s conditions and industry practices, and by c alibrating, cleaning, and repairing such equipment on a regular basis to ensure effective pesticide application and pest control.

B.2.4. Operators shall ensure that the equipment’s rate of pesticide application is calibrated to deliver the precise quantity of pesticide needed to achieve greatest efficacy against the target pest.

A.9. Narrative Standards: Pursuant to Nevada Administrative Code (NAC) 445A.121 , pesticide discharges shall not cause the following standards to be violated in any surface Waters o f the U.S

. Waters shall be free from:

A.9.1. Substances that will settle to form sludge or bottom deposits in amounts sufficient to be unsightly, putrescent, or odorous;

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

21 State /

Permit WQBEL Provision

A.9.2. Floating debris, oil, grease, scum, and other floating materials in amounts sufficient to be unsightly;

A.9.3. Materials in amounts sufficient to produce taste or odor in the water, detectable off

- flavor in the flesh of fish, or in amounts
sufficient to c hange the existing color, turbidity, or other conditions in the receiving stream to such a degree as to create a public nuisance;

A.9.4. High temperature; biocides; organisms pathogenic to human beings; or toxic, corrosive, or other deleterious substances at levels or combinations sufficient to be toxic to human, animal, plant, or aquatic life;

A.9.5. Radioactive materials resulting in accumulations of radioactivity in plants or animals hazardous or harmful to humans or aqua tic life;

A.9.6. Untreated or uncontrolled wastes or effluents that are reasonably amenable to treatment or control; and

A.9.7. Substances or conditions which interfere with the beneficial use of the receiving waters.

A.9.8. Narrative standards are not considered violated when the natural conditions of the receiving water are outside the established limits, including periods of high or low flow. Where effluents are discharged to such waters, the discharges are not consider ed a contributor to substandard conditions provided that comp liance with permit requirements is maintained.

B. DISCHARGE LIMITATIONS, REQUIREMENTS AND CONDITIONS

B.1. During the period beginning on the effective date of this general permit, and lasting until it expires, pesticide discharge a ctivities
shall be lim ited and, as applicable, monitored by the operator as specified the sections below.

[B.2

- B.4 omitted here].

B.5. Pest Management Area Description

– Operators shall document the following:

[B.5.1

- B.5.3 omitted here].

B.5.4. Water quality standards: Do cument and describe any water quality standards applicable to waters to which they may discharge, including the list of pesticide(s) or any pollutants for which the water is impaired as defined in Section C.20

.

[B.6

- B.9 omitted here].

B.10. Best Management Practices (BMP)

## January 7, 2016



# EXAMPLES OF STATE PGP PROVISIONS THAT ADDRESS WQ BELs / WQ MONITORING

22 State /

Permit WQBEL Provision

B.10.1 Operators shall implement BMPs prior to commencement of discharge.

B.10.2 Operators shall maintain BMP requirements to ensure compliance with the terms and conditions of this general permit

- GNVPGP11

. All pe sticide control measures and other protective measures shall be maintained in effective operating condition;

B.10.3 Operators shall make all BMP records and plans available to the Division upon request.

B.10.4 If existing BMPs need to be modified or ad ditional BMPs are necessary, implementation shall be completed as soon as possible.

C.1. Monitoring

C.1.1. Visual Monitoring Requirements: Operators covered under this permit shall monitor the area to and around which pesticides are applied for possibl e and observable adverse incidents, caused by application of pesticides. This includes, but is not limited to, the unanticipated death or distress of non

- target organisms and disruption of wildlife habitat, and recreational or municipal water use.
Visual a ssessments of the application site shall be performed:

C.1.1.1. During any pesticide application, when considerations for safety and feasibility allow;

C.1.1.2. During any post

- application surveillance or efficacy check, if surveillance or an efficacy check is conducted

.