Page | 1 Washington State Pesticide Permit Conditions 

### Was hington State Pesticide Permit Conditions

Conditions Necessary t o M eet State Standards for the EPA Pesticides General Permit (PGP)

Washington State Department of Ecology (Ecology) is conditionally certifying the PGP issued October 31, 2011 by EPA . Ecology’s conditions are below.

Condition 1. REQUIREMENTS FOR PESTICIDE APPLICATORS

Permittees must be licensed in the State of Washington to apply pesticides and must comply with chapter s 16

- 228 of the Washington Administrative Code ( WAC ) , 15.58 R evised Code of
W ashington (RCW)

, and 17.21 RCW

.

Condition 2. REQUIREMENTS FOR PESTICIDE APPLICATIO N

A. Permittees may only use pesticide products that are FIFRA

- labeled and must comply with the products ’ FIFRA label. Permit requirements do not reduce the requirements on the FIFRA label. The pesticide product must be labeled for the Permittee’s intended use.

B. The application of pesticide products must not cause or contribute to violations of the Water Quality Standards for Surface Water of the State of Was hington (chapter 173

- 201A WAC), Ground Water Quality Standards (chapter 173

- 200 WAC), Sediment Management Standards (chapter 173

- 204 WAC), and human health

- based criteria in the National Toxics Rule ( 40 CFR 131.36)

. Discharges that do not comply with thes e standards are prohibited.

Citations:

• Chapter 90.48 RCW

• RCW 90.48.010

• Chapter 173

- 201A WAC

• Chapter 173

- 226 WAC

• 173

- 226

- 070 WAC

Condition 3. ALLOWED ACTIVE I NGREDIENTS AND CONDITIONS FOR USE

Restrictions on the active ingredients allowed, when

, and how pesticide products may be applied (Conditions 4

- 11) are technology

- based requirements Ecology has determine d to meet AKART for the control of pollution

. AKART requirements protect the existing beneficial uses of waters of the state listed in c hap ter 173

- 201A WAC

.Page | 2 Washington State Pesticide Permit Conditions The Permittee must avoid treatments that restrict public water use during the opening week of fishing season, Memorial Day weekend, Independence Day weekend, and Labor Day weekend and must minimize treatments that restrict public water use during weekends

.

Citations:

• Chapter 90.48 RCW

• RCW 90.48 .010

• Chapter 173

- 201A WAC

• WAC 173

- 201A

- 020

• WAC 173

- 201A

- 300

• WAC 173

- 201A

- 410(4)(c)(i and ii)

• Chapter 173

- 226 WAC

• WAC 173

- 226

- 070

• WAC 173

- 226

- 090

Condition 4. AQUATIC MOSQUITO CON TROL

A. ALLOWED ACTIVE INGREDIENTS

1. Bacillus sphaericus ( strain H

- 5a5b) 2. Bacillus thuringiensis israelensis (Bti) 3. Malathion 4. Methoprene 5. Monomolecular surface films
6. Paraffinic white mineral oil
7. Spinosad 8. Temephos 9. Etofenprox 10. Malathion 11. Naled 12. Natural Pyrethrins 13. Permethrin 14. Piperonyl Butoxide (PBO) 15. Prallethrin 16. Resmethrin 17. Sumithrin (d

- phenothrin)

B. ADDITIONAL RESTRICTI ONS

1. The Permittee may apply larvicides provided one or more of the following conditions

are met.Page | 3 Washington State Pesticide Permit Conditions a. Pretreatment surveillance of a potential larvicide application site indicates that at least one larvae/pupae is present in at least one of three dips

. In the event that the Permittee finds larvae/pupae, and the area is treated, the Permittee may continue

pre

- emptive larvicide trea tments without dipping for the remainder of the

treatment season.

b. Methoprene may be used as a pre

- emergent dry

- land treatment on intermittently flooded areas that have a record of mosquito hatches following flooding.

c. The application site is in, or adjacent to a county in which mosquito, bird, animal, or human mosquito

- borne disease cases are confirmed during the current

treatment season.

d. The treatment site is a catch basin, storm drain, and utility or transportation vault.

2. Permittees may only use paraffinic white mineral oil or malathion as larvicides if other pesticides are ineffective at a specific treatment site and the water body is non

fish b earing

. To determine if the water body is fish bearing, consult with Washington State Department of Fi sh and Wildlife ( WDFW )

. Contact information for WDFW Regional Wildlife Biologists may be accessed at http://wdfw.wa.gov/about/contact/

.

3. The Permittee may not apply temephos in lakes, streams, in the littoral zone of water bodies, or on sites listed in C ondition 4.B. 4

. The use of temephos is allowed only in response to the development of pesticide resistance within a specific larval mosquito population.

4. Due to the present of sensitive, threatened, candidate, or endangered species only Bacillus thuringiensis israelensis (Bti) and Bacillus sphaericus (strain H

- 5a5b) may be used in the following areas :

a. Grant County, north of Moses Lake, within the Crab Creek watershed: T21N R27E Sections 1 and 12; T21N R28E Sec tions 7, 17, 18, 19, 28, 29, 30, 31, 32, and 33.

b. Grant County, south and west of Moses Lake and south of Interstate

- 90, the northern portion of the Potholes: T19N R27E Sections 33, 34, and 35; T19N R28E Sections 29, 30, 31 and 32; T18N R27E Sections 1, 2, 3, 4, 8, 9, 10, 11, 12, 13, 14, 15, 16, and 17; T18N R28E Sections 5, 6, 7, 8, 17, and 18.

c. Grant County, area within and near the Sun Lakes

– Dry Falls State Park wetlands: T24NR27E and 28E.

d. Kitsap County: lakes, ponds, and wetlands located in T22N R1W Sections 1, 2, 10, 11, and 12.Page | 4 Washington State Pesticide Permit Conditions e. Skamania County, east of Carson, all waters in T3N R8E Sections 23, 24, 25, 26, and 36; T3NR9E Sections 30 and 31.

f. Thurston County, west of Yelm: lakes, ponds, and wetlands located in T17N R1E Sections 8, 9, and 21.

g. Thurst on County, T16N R4W Sections 31, 32, and 33.

Condition 5

. AQUATIC PLANT AND AL GAE MANAGEMENT

A. This section applies to products applied to the eradication of noxious and WSDA quarantine list weeds and the control nuisance and noxious weeds in lakes, rivers, streams, other standing and flowing waterbodies (not including irrigation canals), emergent vegetation around waterbodies, and roadside and ditch bank s . This does not

cover a ctivities in saltwater areas.

B. Noxious Weed Eradication Eradica tion projects target only state

- listed noxious weeds or plants listed on the WSDA quarantine

- list. The goal is the complete and permanent removal of these species from the entire water body . As such, littoral zone limitations do not apply to eradication of noxious weeds or weeds on the quarantine list. Impacts to non

- target plants are acceptable to the extent needed to eradicate the target plants. Eradication is allowed only for:

1. All noxious weeds as identified in chapter 16

- 750 WAC. 2. Plants listed on the quarantine list as identified in chapter 16

- 752 WAC. 3. Non

- native and potentially invasive plants not listed on the above lists, as determined by the WSNWCB

, WSDA , or Ecology.

C. Nuisance and Noxious Weed Control The goal is to maintain native aquatic vegetati on for habitat while allowing partial plant removal for recreation and other beneficial uses . Permit requirements differ depending on plant growth forms and the legal status of the plant species i n Washington . Minimal impact to non

- target plants is accepta ble to the extent needed to control the target plants.

Nuisance plants are native plants that gro w in such quantity that they restrict the beneficial uses of a waterbody as defined in chapter 173

- 201A WAC.

1. Aquatic noxious weed control The Permittee may apply herbicides to:

a. 100 percent of noxious weeds if they are Class A weeds, Class B weeds in areas where they are designated for control, as identified in chapter 16

- 750 WAC, and Class C weeds where they are selected for control by a county Noxious Weed C ontrol Board (RCW 17.10.080). b. 100 percent of any submersed noxious or quarantine

- list weeds not covered under ( a ) if the Permittee conducts weed control using a selective herbicide

.Page | 5 Washington State Pesticide Permit Conditions c. 100 percent of any emergent or floating

- leaved noxious weeds and quarantin e listed weeds.

2. Aquatic nuisance plant control The Permittee may apply chemicals to:

a. No more than 25 feet on either side of a dock or no more than an area 50 feet wide per lot for individual treatments targeting submersed and floating

- leaved plants. Treatment of the vegetated area may extend up to 25 feet beyond the end of the dock. On individual lots with no docks, treatment of the vegetated area can extend up to 50 feet from the shore. b. No more than 40 percent of emergent shoreline plants such as ca ttails and bulrush on individual lots for individual treatments.

c. A percentage of a water body’s littoral zone based on the littoral acres of the water body and the size of the water body.

i. The geographic area where the Permittee applies chemicals must rema in the same for the entire length of the permit coverage up to the maximum percentage of the littoral zone allowed for by water body size. ii. All untreated littoral areas must include native vegetation from the shore to the edge of the littoral zone where the plants stop growing in deeper water. iii. The cumulative percentage of the littoral zone where herbicides may be applied must not exceed the amount allowed below:

1) In water bodies up to 15 acres in size, the Permittee may apply herbicides to no more than 75 per cent of the littoral zone. 2) In water bodies over 15 acres and up to 50 acres in size, the Permittee may apply herbicides to no more than 60 percent of the littoral zone. 3) In water bodies over 50 acres and up to 500 acres in size, the Permittee may apply herb icides to no more than 50 percent of the littoral zone. 4) In water bodies over 500 acres in size, the Permittee may apply herbicides to no more than 30 percent of the littoral zone.

3. Roadside and ditch bank plant control

a. For activities conducted by state and local agencies, the Permittee may apply herbicides to 100 percent of the plants within the right of way

.

b. The Permittee may apply herbicides to no more than 40 percent of native vegetation of roadsides and ditches on privately owned individual lots, but may apply herbicide to 100 percent of any noxious or quarantine

- listed weeds.

4. Algae control

. The Permittee may apply algaecides to the entire water body or sections of the water body, as needed, when cyanobacteria or other potentially toxic or environmentally harmful algae species are expected to form blooms in the water body.

The Permittee may apply algaecides to filamentous algae so long as the treated areas do not exceed the maximum amount of littoral zone allowed for treatment inPage | 6 Washington State Pesticide Permit Conditions Condition 5.C.2.c.iii . Different littoral zone limitations apply to the herbicide fluridone. See Treatment Limitations in Table 1

.

5. Nutrient Inactivation The Permittee may apply approved buffering agents and alum and calcium hydroxide/oxid e and calcium carbonate as phosphorus inactivation products to the entire water body or sections of the water body per permit sections Table 2

.

D. ALLOWED ACTIVE INGREDIENTS

1. 2,4

- D, Amine Formulation 2. 2,4

- D, Ester Formulation 3. Diquat Dibromide 4. Endothall, Dipot assium salt (e.g. Aquathol) 5. Endothall, M ono potassium sal t (e.g. Hydrothol)
6. Fluridone
7. Glyphosate 8. Imazamox 9. Imazapyr 10. Sodium carbonate peroxyhydrate 11. Triclopyr TEA 12. Adjuvants: Agri

- DexTM, BondTM, Bronc MaxTM, Bronc Plus Dry

- EDTTM, Class Act NGTM , CompetitorTM, Cut

- RateTM, Cygnet PlusTM, Dyne

- AmicTM, ExciterTM, Fast BreakTM, FractionTM, IntensifyTM, InterlockTM, KineticTM, Level 7TM, LI

- 700TM, LiberateTM, MagnifyTM, One

- Ap XLTM, Pro AMS Plus Activator PenetrantTM, SinkerTM, Spray

- RiteTM, TacticTM, TronicTM 13. Nutrient Inactivation Pro ducts: aluminum sulfate, sodium aluminate, calcium hydroxide/oxide, and calcium carbonate

. See Table 2 for specific restrictions on nutrient inactivation products. 14. Marker dyes, shading and water clarification products

. See Table 3 for specific restriction s on these products.

E. ADDITIONAL RESTRICTI ONS

1. Identified Wetlands

The Permittee may only treat high use areas to provide for safe recreation and boating in identified and/or emergent wetlands. Treated area must be limited to protect native vegetation. For eradication projects, the Permittee must make every effort to protect native wetland vegetation while removing noxious species.

2. The Permittee must use Washington Department of Natural Resources (WDNR) Natural Heritage Program database to determine if sensitive

, threatened , or endangered (rare) plants are present in the proposed treatment area. If a rare plant does occur in or around the waterbody, the Permittee must survey for the rare plantPage | 7 Washington State Pesticide Permit Conditions and mitigate for impacts to it. The rare plant database is currently located at http://www1.dnr.wa.gov/nhp/refdesk/plants.html

.

3. The Application of Products

a. T he Permittee must comply with the specific restrictions/limitations on the use of each chemical listed in Tables 1

– 3 below

.

b. When there are potable water restrictions on the product label, the Permittee must not apply any chemical until it has notified people who withdraw drinking water from the water body

. If requested by the affected water user(s), the Permittee must provide a n alternative drinking water supply until the intake water tests at or below the concentration specified for that chemical in Table 1 , or until the period specified in Table 1 for that chemical has elapsed

. If there is no drinking water restriction listed in Table 1 , the Permittee must follow all label conditions for potable water supply

. If requested by a water user, the Permittee must provide advance notice of pending treatments on a time sch edule agreed to by all parties.

c. If the treatment affects potabl e water use on water bodies with municipal or community drinking water intakes , the Permittee must obtain written consent to the treatment from the municipality or community. The Permittee must keep this consent letter for 5 years.

d. People withdrawing water under a legal water right or claim for irrigation or livestock watering purposes may request an alternate water supply during the treatment if the label has restrictions for those uses

. The Permittee must provide an alternative wat er supply until the intake water tests at or below the irrigation restriction concentration or livestock drinking water concentration on the product label or until the time interval specified on the label has elapsed

. If requested by a water user, the Perm ittee must provide advance notice of pending treatments on a time schedule agreed to by all parties.

e. The Permittee must follow WDFW ’s Fish and Wildlife Treatment Windows for Ecology’s Aquatic Plant and Algae Management Permit (Treatment Windows) to protec t salmon, steelhead, and bull trout populations and other sensitive species and habitats. WDFW may periodically update the Treatment Windows as new information becomes available see: http://www.ecy.wa.gov/programs/wq/pesticides/final_pesticide_permits/aqu atic_p lants/permitdocs/wdfwtiming.pdf . If a waterbody is not listed in the Treatment Windows, the default window is July 15

– October 31, both dates inclusive. Contact the regional WDFW biologist to develop a new timing window if the default window will no t provide for adequate treatment.

f. The Permittee must follow the specific restrictions and advisories identified in Tables 1

– 3 below

. Recreational restrictions/advisories apply to swimming, boating, water skiing, etc

. Swimming restrictions/advisories app ly to primaryPage | 8 Washington State Pesticide Permit Conditions contact activities such as swimming, wading, and water skiing

. Drinking water restrictions apply to residents drinking lake water as their sole source of potable water or where they hold a water right for potable water.

F. MONITORING REQUIREME N TS

1. Application of Herbicides and Algaecides

a. The Permittee must monitor dissolved oxygen levels pre

- and post

- treatment when contact herbicides are used in water bodies on the 303(d)

- list for dissolve d

oxygen

. Immediately before treating, the Permittee must monitor surface and bottom dissolved oxygen concentrations at a sampling location in the center and at the edge of the proposed treatment area(s).

b. The Permittee must select at least one representative treatm ent area to monitor each time the water body is treated

. The Permittee must monitor post

- treatment surface and bottom dissolved oxygen concentrations no earlier than seven days and no later than 14 days after the treatment, at the same time of day that th e pre

treatment monitoring occurred and at the same sites and depths. The Permittee must keep the data for 5 years and make it available upon request

.

2. Application of Phosphorus Inactivation Products

a. Aluminum sulf ate or sodium aluminate (alum)

For whol e or partial lake treatments, the Permittee must measure, at a minimum, surface water pH once in the morning prior to any alum addition and once in the afternoon one hour after alum addition has stopped for that day. The Permittee must continue this monito ring regime for the duration of the treatment and for 24 hours following treatment completion

. The monitoring location must be representative of water body

- wide conditions

. If the pH decreases to less than 6.2, the Permittee must stop treatment, analyze for alkalinity, and must take imme diate steps to increase the pH.

b. Calcium hydroxide/oxide or calcium carbonate treatment

The Permittee must measure pH once on the day before treatment, and once in the morning and once in the afternoon for the duration of the treatment and for 24 hours following treatment

. If the pH is above 9.0 due to the effects of the treatment (rather than through photosynthesis), the Permittee must stop treatment.

c. Continuous Injection Systems

T he Permittee must measure pH at a min imum once every two weeks during the first month of continuous injection and thereafter once a month for the duration of the injection process

. The Permittee must ensure that pH measurements representPage | 9 Washington State Pesticide Permit Conditions water body

- wide conditions, unless the injection syste m is in an isolated area in relation to the main water body (e.g., in a bay with a narrow channel to the main water body)

. For isolated areas of water bodies, the Permittee must measure pH at the end of the bay and in the main water body.Page | 10 Washington State Pesticide Permit Conditions Table 1: Specific Restrictions on the Application of Herbicides and Algaecides for Control and Eradi cation Projects

Active Ingredient Subject to Timing Restrictions/ Advisories Treatment Limitations Other Specific Restrictions

2, 4

– D (amine) Yes for salmon, steelhead, bull trout

– check timing table for other priority species Swimming advisory during treatment, and for 24

- hours post

treatment (in the treated area) Control projects only : Do not apply within 400 feet of an outlet stream if there is an outflow. Ensure that residents drinking lake water turn off their intakes and do not resume drinking treated water for 28 days following application. As an alternative to waiting, treated water may be used for drinking once the 2,4

- D level in the intake water is determined to be 0.07 mg/L or less, or the applicator complied with la bel setback distances. 2, 4

– D (ester) See other specific restrictions

– Yes for salmon, steelhead, bull

trout

– check timing table for other priority species Swimming restriction during treatment, and for 24

- hours post

treatment (in the treated area) None Do not use in salmon

- bearing

waters.

Diquat Yes for salmon, steelhead, bull trout

– check timing table for other priority species Swimming advisory during treatment, and for 24

- hours post

treatment (in the treated area) • Do not spray on emergent shoreline vegetation(e.g. cattails, bulrush) or algae.

• Do not pour Diquat directly from container. Ensure that residents drinking lake water turn off their intakes and do not resume drinking treated water for 10 days following application. As an alternativ e to waiting, treated water may be used for drinking once the Diquat level in the intake water is determined to be 0.02 mg/L or less.Page | 11 Washington State Pesticide Permit Conditions Endothall Dipotassium salt (Aquathol TM ) Yes for salmon, steelhead, bull

trout

– check timing table for other priority species Swimming advisory during treatment, and for 24

- hours post

- treatment (in the treated area) Control projects only : Do not apply within 400 ft of an outlet stream if there is an outflow. Ensure that residents drinking lake water turn off their intak es and do not resume drinking treated water for 28 days following application. As an alternative to waiting, treated water may be used for drinking once the endothall level in the intake water is determined to be 0.10 mg/L or less.
Endothall Monopotassium salt (Hydrothol 191 TM ) Yes for salmon, steelhead, bull

trout

– check timing table for other priority species Swimming advisory during treatment, and for 24

- hours post

- treatment (in the treated area) • Use for control of filamentous algae,

cyano bacteria, or harmful algae only. See Condition 5.C.4

• Limit concentrations to 0.2

- mg/L of active ingredient • Treatment must occur from the shoreline outward into the water body.

• Ensure that residents drinking lake water turn off their intakes and do not re sume drinking treated water for 14 days following application. As an alternative to waiting, treated water may be used for drinking once the endothall level in the intake water is determined to be 0.1 mg/L or less.
Fluridone No for fish, but check timing table for other sensitive species. None Unless operating under a plan to eradicate a noxious weed, fluridone application is further limited to no more than 50 percent of the littoral zone in lakes up to 50 acres and no more than 40 percent of the littoral zone in lakes from 50

- 500 acres. None

Glyphosate No for fish, but None None NonePage | 12 Washington State Pesticide Permit Conditions check timing table for other sensitive species. Sodium carbonate peroxyhydrate No for fish, but check timing table for other sensitive species. Swimming advisory during treatment, and for 2

- hours post

treatment (in the treated area Do not treat plants growing on the shore. None

Imazapyr No for fish, but check timing table for other sensitive species. None None None

Imazamox No for fish, but check timing table for other sensitive species. None None None

Triclopyr TEA No for fish

- check timing table for other priority species. Swimming advisory during treatment, and for 12

- hours post

- treatment (in the treated area) Aerial applications are not allowed. Ensure that residents drinking lake water turn off their intakes and do not resume drinking treated water for 28 days followin g application. As an alternative to waiting, treated water may be used for drinking once the triclopyr level in the intake water is determined to be 0.4 mg/L or less, or the applicator complied with label setback distances.Page | 13 Washington State Pesticide Permit Conditions Table 2

– Nutrient Inactivation Products

Product Subject to Timing Restrictions/ Advisories Treatment Limitations Other Specific Restrictions

Alum • No for fish

- check timing table for sensitive species.

• Timing should address aquatic plant biomass that may interfere with inactivation of sediment phosphorus (requiring early spring or fall treatment). None • Application must cease when wind speed is greater than 15 miles per hour

• Powdered alum must be mixed with water to form a slurry before applying to the water surface.

• The pH of lake water during treatment must remain between 6.0 and 8.5 based on lake average.

• Only aluminum compounds suitable for water treatment may be used.

• Buffering materials must be available for use. • A jar test must be completed prior to whole lake treatments only if a buffer other than sodium aluminate is used or a ratio of liquid alum to liquid sodium aluminate differs from 2:1 by volume.

• An on

- site st orage facility is required for any treatment requiring 9,000 gallons of alum or more, or the project proponent must have a plan to store any unused alum or buffering products.

• Follow the monitoring requirements in Condition 5.F.2

.

Calcium No for fish

- check timing table for sensitive species. None The pH must remain between 6.0 and 9.0. • A jar test must be completed prior to treatment to identify proper dosing levels. This jar test needs to be conducted at least over a 24

- hour period to ensure that t he pH response is at equilibrium with water chemistry.

• Follow the monitoring requirements in Condition 5.F.2

.Page | 14 Washington State Pesticide Permit Conditions Note : The products Nutrient Inactivation products listed above are not registered as pesticides through FIFRA or regulated under any other feder al laws or regulations. A licensed applicator is not needed for the application of any of these products to waters of the United States.

Table 3: Biological Water Clarifiers, Shading Products
Product Restrictions Shading products Do not apply directly to rivers or streams or any lake that discharges to other surface waters of the state. Biological Water Clarifiers Use only in water bodies with no discharge to other surface waters of the state during and for two weeks after treatment.
Note : These restrictions are in addition to the federal FIFRA label requirements (when applicable).Page | 15 Washington State Pesticide Permit Conditions Condition 6

. AQUATIC NOXIOUS WEED CONTROL

A. This section applies to products applied to control emergent Washington state noxious and quarantine list weeds in the ripar ian areas around waterbodies, including salt water.
This section does not apply to the in

- water application of products to control aquatic plants

. For in

- water use, refer to Condition 5.

Plants authorized for treatment include:

1. Noxious we eds as identif ied in chapter 16

- 750 WAC. 2. Plants listed on the WSDA quarantine l ist as identified in chapter 16

- 752 WAC. 3. Non

- native and potentially invasive plants not listed on the above lists, as determined by the WSNWCB, WSDA, the Washington Invasive Species Council (WISC) , or Ecology.

B. ALLOWED ACTIVE INGREDIENTS

1. Bispyribac

- sodium 2. Carfentrazone

- ethyl 3. 2,4

- D , Amine Formulation 4. Flumioxazin 5. Glyphosate
6. Imazamox
7. Imazapyr 8. Penoxsulam 9. Triclopyr TEA 10. Adjuvants: Agri

- DexTM, BondTM, Bronc MaxTM, Bronc Plus Dry

- EDTTM, Class Act NGTM, CompetitorTM, Cut

- RateTM, Cygnet PlusTM, Destiny TM

, Dyne

- AmicTM, ExciterTM, Fast BreakTM, FractionTM, InterlockTM, KineticTM, Level 7TM, LI

- 700TM, LiberateTM, MagnifyTM, One

- Ap XLTM, Pro AMS Plu s Activator PenetrantTM, SinkerTM, Spray

- RiteTM, Superb HC TM

, TacticTM, TronicTM 11. Marker Dyes

C. ADDITIONAL RESTRICTI ONS

Permittees shall make herbicide applications only for the control of state listed noxious weeds and weeds on the WSDA quarantine list that are found in aquatic environments

. Noxious weed means those species of plants listed as Noxious class A, B, and C weeds by the Washington State Noxious Weed Control Board in accordance with 17.10 RCW

. WSDA maintains the quarantine lis t in accordance with 17.2 4 RCW.

Condition 7

. IRRIGATION SYSTEM AQUATIC WEED CONTROL

A. ALLOWED ACTIVE INGREDIENTS

1. Copper (dissolved)Page | 16 Washington State Pesticide Permit Conditions 2. Acrolein 3. Endothall, Dipotassium salt (e.g. Aquathol) 4. Endothall, M onopotassium sal t (e.g. Hydrothol) 5. Xylene
6. Sodium Carbonate Peroxyhydrate
7. Fluridone 8. Imazapyr

B. ADDITIONAL RESTRICTI ONS

1. Point of Compliance

a. The point of compliance means the location where water treated with pesticides

enters a surface water bod y.

b. For Amon Wasteway, Snipes Creek Wasteway, Sulphur Creek Wasteway, and Crab Creek, the point of compliance shall be at or above the following locations:

i. Amon Wasteway where it exits the golf course at Gage Road (approximately latitude 46.22715, longitude

- 119.26024).

ii. Snipes Creek Wasteway at the Benton 29.32 Lateral (near McCreadie Road) ( approximately at latitude 46.25630, longitude

- 119.67406).

iii. Sulphur Creek Wasteway at Sheller Road (approximately at latitude 46.33167, longitude

- 119.98021).

iv. Crab Creek at Red Rock Coulee / DCC1 wasteway (approximately at latitude 46.84693, longitude

- 1 19.58673).

2. Discharge Limitations

a. The discharge of any allowed active ingredient (C ondition 7.A.1

- 8 ) must not exceed the values identified in Table 5

.

Table 5 : Point of Compliance Discharge Limitations
Parameter Maximum Instantaneous C oncentration Copper (dissolved) 25 ug/l
Acrolein 21 ug/l Dipotassium Salt of Endothall • mg/l (acid equivalent) from March 1 to July 15

• 2.5 mg/l (acid equivalent) from July 16 to February 29

• See C ondition 7.B.6Page | 17 Washington State Pesticide Permit Conditions Mono Salt of End othall • 50 u g/l (acid equivalent)

• See C ondition 7.B.6 Xylene 5.1 mg/l Sodium Carbonate Peroxyhydrate See C7.B.3
Fluridone See C7.B.4 Imazapyr See C7.B.5 The maximum instantaneous concentration means the highest allowable discharge at any time.

3. For sodium carbon ate peroxyhydrate applications The permittee need not conduct monitoring under C ondition 7. C

.

4. For fluridone applications:

a. The permittee shall only apply fluridone between October 1 and March 31.

b. The permittee shall only apply in

- water fluridone to s low

- movi ng or quiescent

waters.

c. The permittee shall conduct fluridone treatments in a manner that will prevent treated water from reaching a point of compliance for at least eight weeks after application.

d. The permittee need not conduct monitoring under C ondition 7. C

.

5. For imazapyr applications:

a. The permittee shall only apply imazapyr between October 1 and March 31.

b. The permittee shall only apply imazapyr to s low

- moving or quiescent waters.

c. The permittee shall conduct imazapyr treatments in a manner tha t will prevent treated water from reaching a point of compliance for at lea st two weeks after application.

d. The permittee need not conduct monitoring under Condition 7. C

.

6. For endothall applications

, The permittee must not release endothall from irrigation canals at times that smolting salmonids are present.

C. MONITORING REQUIREME NTS

The permittee shall monitor all pesticide applications where the treated water eventually flows to a point of compliance according to Table 6

.Page | 18 Washington State Pesticide Permit Conditions Table 6 : Sampling Schedule

Monitoring Site Parameter Method Detection Limit Minimum Sampling Frequency Sample Type

Point(s) of Compliance Flow N/A Concurrent with all other samples Measurement

Point(s) of Compliance Copper, dissolved 5 ug/L 2 times per treatment See C ondition 7.C .1 Grab

Point(s) of Compliance Hardness (only when monitoring copper) 1 mg/l Concurrently with copper sampling Grab

Point(s) of Compliance Acrolein 2 ug/l 2 times per treatment See Condition 7.C.1 Grab

Point(s) of Compliance Endothall 12 ug/l 2 times per treatment See Condition 7.C.1 Grab

Point(s) of Compliance Xylene 1 mg/l 2 times per treatment See Condition 7.C.1 Grab

None Sodium Carbonate N/A None None
None Fluridone N/A None None
None Imazapyr N/A None None

1. The permittee shall take the two samples to identify the highest concentration of the pesticide

. The permittee shall take both samples during the peak pesticide

concent ration at the compliance point.

a. If the travel time is 20 hours or more, the permittee shall space their samplin g at least two hours apart.

b. If the travel time is less than 20 hours, the permittee shall space their samples at 10% of t he travel time of the pesticide.

c. If the permittee is tracking multiple treatments simultaneously, the permittee shall use the shortest travel time to determine if the permittee follows C ondition 7.C.1.a or C ondition 7.C.1.b.

2. If all treated water is consumed ( e.g. used on

- farm) and the en d of the canal/spillway is dry, the permittee need not conduct monitoring

.

3. The permittee must keep all monitoring records for a period of 5 years and make them available upon request.

4. In some situations, the permittee prevents treated water from reaching some points of compliance by closing side canals/spillways

. (For example, a permittee closes a gate to a spillway while treating the primary canal and all the treated water passes the closed gate.) The permittee shall conduct full monitoring ( C ondition 7 .C ) at the pointsPage | 19 Washington State Pesticide Permit Conditions of compliance corresponding to the closed canals/spillways when the canals/spillways are reopened unless t he closed canal/spillway is kept closed for double the travel time it takes the treated water to reach the point of closure

. In thi s situation, no monitoring is required

. For this special situation only, the travel time is counted from when the pesticide application ends

. (For example, if a treatment ends at 1:00 and it takes four hours to pass the closed gate at 5:00, the permittee shall keep the gate closed for another four hours until 9:00 for this special situation to apply).

5. Time Travel Study

a. The permittee shall support all monitoring by completing a time travel study at each application site.

b. Time travel studies shall determine the amount of time it takes the pesticide to travel from the application site to the point of compliance

.

c. The flow conditions during the time travel study shall mimic the conditions during pesticide application.

d. The permittee shall use time tra vel studies that are less than five years old.

e. Time travel studies are only required for pesticide applications that flow to a point of compliance.

6. Sam pling and Analytical Procedures

a. The permittee shall ensure that all samples and measurements taken to meet the requirements of this permit are representative of the volume, concentration, and nature of the monitored parameters.

b. The permittee shall ensure that sampling and analytical methods used to meet the monitoring requirements specified in this permit conform to the latest revision of the Guidelines Establishing Test Procedures for the Analysis of Pollutants contained in 40 CFR 136 or to the latest revision of Standard Methods for the Examination of Water and Wastewater (APHA).

c. Acrolein testing may follow the procedures of Solid Waste Method 8260.

Condition 8

. FISH MANAGEMENT

A. ALLOWED ACTIVE INGREDIENTS

1. Rotenone 2. Antimycin

- APage | 20 Washington State Pesticide Permit Conditions 3. Potassium Permanganate (KMn O 4 ) is the only chemical permitted to neutralize rotenone treated waters when necessary to prevent damage to non

- targeted organisms and maintain water quality outside of the area intended for rotenone treatment.

B. ADDITIONAL RESTRICTI ONS

1. In order to prevent unnecessary damage to the environment, the permittee shall follow the best management practices defined below on the day of application.

Powdered rotenone formulations shall be applied in such a way that minimizes airborne dust, using the best available t echnology such as the method outlined in “Utah’s Procedure for Mixing Powdered Rotenone into a Slurry” (Thompson et al. 2001).

In order to prevent an exceedance of water quality standards outside the area intended for rehabilitation, rotenone treatment sh ould only take place in lakes that are not discharging to downstream waters

. This is accomplished by limiting treatments to lakes with closed basins or conducting treatments only during periods of low water, usually September or October.

In instances whe re treated waters may potentially discharge to downstream waters resulting in an exceedance of water quality standards outside the treatment area, such discharge shall be prevented by installing adequate temporary water control

measures.

When it is necess ary and unavoidable to discharge rotenone treated waters to downstream waters, the permittee shall conduct pretreatment water quality and biological monitoring

.
Treated waters shall be effectively neutralized and detoxified using potassium permanganate so that water quality standards are not exceeded below the neutralization zone

. For purposes of this section, neutralization zone is defined as the downstream waters where potassium permanganate has been applied but has not yet fully neutralized the rotenon e, due to the lag time normally associated with detoxification

. The neutralization zone is typically considered the distance that water can be expected to travel in 20 minutes

. Since the neutralization zone may contain toxic levels of rotenone and potass ium permanganate, some fish mortalities may occur in this zone.

Below the neutralization zone, rotenone must be totally neutralized and residual potassium permanganate levels maintained at a non

- toxic level of 1 mg/L, not to exceed 2 mg/L

. Live trout cars will be set up below the neutralization zone to monitor the effectiveness of detoxification measures.Page | 21 Washington State Pesticide Permit Conditions Detoxification procedures must utilize calibrated equipment to achieve the minimum effective concentration of potassium permanganate to oxidize the rotenone within the neutralization zone

. Potassium permanganate concentrations must be closely monitored using a field calibrated spectrophotometer to keep residual permanganate levels at a level that effectively neutralizes rotenone while preventing dama ge to aquatic life downstream of the treatment area and neutralization zone.

2. I n order to minimize the discharge of inert ingredients (e.g. Benzene), if using a rotenone formulation containing Benzene, only powdered (non

- liquid) rotenone formulations shall be utilized, except in very limited cases when the Permittee finds it necessary to treat waters that are inaccessible by boat, such as weedy shorelines or marshy areas.

3. Monitoring

The Permittee must conduct monitoring on each water body treated with aquatic pesticides to determine the extent and duration of the short

- term water quality reduction resulting from rotenone applications. The Permittee must monitor according to Tables 7 and 8

.Page | 22 Washington State Pesticide Permit Conditions Ta ble 7 : Ro tenone Monitoring Schedule

Parameters Units Minimum Sampling Frequency Sample Type

Rotenone Toxicity

- Trout Bioassay: 48

- hr live box test (5 trout); 100% survival of rainbow trout Number of days until 100% survival Once post

- treatment, approximately 3

- 8 weeks after treatment Observation (no lab accreditation required)

If rotenone formulations containing Benzene are used : VOC, semi

- VOC, plus any other inert ingredients listed on MSDS 1 μg/L 1. 24 hours after treatment; 2. four weeks after treatment Grab

pH Standard Once pretreatment Grab Temperature °F Once pretreatment Grab Alkalinity 2 mg/L CaCO3 Once pretreatment 2 Grab

Organic demand 2,3 Standard 3 Once pretreatment 2 Grab
Zooplankton sampling See below 4 1. Pre

- treatment; 2. Six months after treatment; 3. One year after treatment Composite 4

1 If rotenone formulations containing Benzene are used , test for the following parameters: VOC (EPA method 8310) and semi

- VOC (EPA method 502.2)

. Also test for any other inert ingredients listed on MSDS (i.e. the MSDS for Prentox ® PrenfishTM Toxicant lists naphthalene; 1,2,4

- t rimethylbenzene; and acetone).

2 Only if neutralization of rotenone with potassium permanganate is required.

3 Use the guidelines provided in Engstrom

- Heg (1971) to determine organic demand for KMnO4.

4 Lakes only

. Zooplankton sampling protocols set forth on Page 4

- 5 of “Water Quality Assessments of Selected Lakes within Washington State

- 1998” Department of Eco logy, December 2000, Publication No. 00

- 03

- 039Page | 23 Washington State Pesticide Permit Conditions Table 8 : Downstream Monitoring Schedule
Parameters Units Minimum Sampling Frequency Sample Type Rotenone Toxicity

- Trout Bioassay: 48

- hour live box test (5 trout) % Survival 1. Begin test at time of treatment and 2. Repeat at one week intervals until upstream treated water is detoxified per upstream bioassay. Observation (no lab accreditation required)

Rotenone 1 mg/L Once 24 hours following

treatment Grab

If rotenone formulations containing Benzene are used: VOC, semi

- VOC, plus any other inerts 2 ug/L 1. 24 hours after treatment, and 2. four weeks after treatment Grab

pH Standard Once pretreatment Grab Temperature °F Once pretreatment Grab Alkalinity 3 mg/L CaCO 3 Once pretreatment 3 Grab Organic Demand 3,4 Standard 4 Once pretreatment 3,4 Grab Zooplankton Sampling See Below 5 1. Pre

- treatment, 2. Six months after treatment, and 3. One year after treatment Composite 5

1 Analyze using methods set forth in Dawson et al. (1983);

2 If rotenone formulations containing Benzene are used , test for the following parameters: VOC (EPA method 8310) and semi

VOC (EPA method 502.2)

. Also test for any other inert ingredients listed on MSDS (i.e. the MSDS for Prentox ® PrenfishTM Toxicant lists naphthalene; 1,2,4

- trimethylbenzene; and acetone).

3 Only if neutralization of rotenone with potassium permanganate is required.

4 Use the guidelines in Engstrom

- Heg (1971) for measuring organic demand for KMnO4.

5 Lakes only

. Zooplankt on sampling protocols set forth on Page 4

- 5 of “Water Quality Assessments of Selected Lakes within Washington State

- 1998” Department of Ecology, December 2000, Publication No. 00

- 03

- 039;Page | 24 Washington State Pesticide Permit Conditions 6 “Macroinvertebrate monitoring” includes gathering benthic invertebrate samples and summarizing the data using the benthic index of biotic integrity (B

- IBI) and a ratio measure of the number of observed taxa divided by the number of expected taxa, the River Invertebrate Pred iction and Classification System (RIVPACS). All bioassessment sampling and related habitat survey data, laboratory analysis, quality assurance, and data analysis shall follow the protocols in Benthic Macroinvertebrate Biological Monitoring Protocols for Ri vers and Streams: 2001 Revision , Plotnikoff and Wiseman, August 2001 ( http://www.ecy.wa.gov/biblio/0103028.html ).Page | 25 Washington State Pesticide Permit Conditions Condition 9

. INVASIVE MOTH CONTROL

A. ALLOWED ACTIVE INGREDIENTS

1. Bacillus thuri ngiensis var. kurstaki based pesticid es 2. Adjuvants that may be used for invasive moth contr ol include latex

- based adjuvants.

B. ADDITIONAL RESTRICTI ONS

1. Monitoring Requirements

The permittee must monitor all pesticide application activities. Minimum monitoring must include the parameters listed in Table 9

. The permittee must keep records of their monitoring an make it available upon request.

One sampling event must be conducted per treatment season

. When treatments are not conducted, no sampling is required

. One grab sample of water must be tested for

conc entrations pesticide active ingredient before and immediately after the application (including indirect applications) to waters

. This monitoring is required to determine impacts on the receiving environment.

Condition 10

. AQUATIC INVASI VE SPECIES

A. ALLOWED ACTIVE INGREDIENTS

1. Chloride for marine and freshwater application. 2. Potassium chloride for marine and freshwater application. 3. Chlorine compounds including chlorine dioxide, sodium chlorite, sodium hypochlorite, and calcium hypochlorite for marine and freshwater application. 4. Acetic acid for marine and freshwater applicati on 5. Calcium hydroxide/oxide (lime) and carbon dioxide for marine and freshwater application.
6. Rotenone for freshwater application.
7. Antimycin

- A for freshwater application. 8. Potassium permanganate (KMnO4) for freshwater application. Table 9 : Invasive Moth Monitorin g Item or Parameter Minimum Frequency Type of Sample Date, start/stop times for application Each day when spraying occurs Record Total acres sprayed Each day when spraying occurs Record Wind speed Each day when spraying occurs Record Location of application Each day when spraying occurs Record Name of applicator Each day when spraying occurs RecordPage | 26 Washington State Pesticide Permit Conditions 9. Endothall, M onopotassiu m sal t (e.g. Hydrothol) 10. Sodium carbonate peroxyhydrate for freshwater application. 11. Methopr ene for freshwater application. 12. Chelated copper compou nds for freshwater application. 13. Pseudomonas fluorescens ( strain CLO145 ) for freshwater application. 14. Heating/co oling (temperature alteration) for mar ine and freshwater application.

B. ADDITIONAL RESTRICTI ONS

1. Activ ities Covered

Activities covered include m anagement activities for nonnative invasive aquatic animals and nonnative invasive marine algae that result in the discharge of chemicals

or control products into surface waters of the state of Washington

. Surface waters include fresh, brackish, marine, and estuarine waters

. Products subject to this condition include algaecides, herbicides, insecticides, molluscicides, piscicides and any other chemical or product appropriate for use in managing these org anisms.

Management activities are organized into two categories: Marine Projects and
Fre shwater Projects.

2. Marine Pr ojects

Marine projects occur in marine or estuarine waters and target nonnative invasive animals and nonnative invasive algal species. M arine projects are allowed for:

a. Animal species as identified in WAC 220

- 12

- 090.

b. Animals or marine algae listed on th e Washington Aquatic Nuisance Species Committee “watch list” of invasive species or on the Washington Invasive Species Council (WISC) management priority list (http://www.invasivespecies.wa.gov/priorities.shtml)

.

c. Animals listed by the United States Fish a nd Wildlife Service (USFWS) as injurious wildlife under the Lacey Act (18 U.S.C. 42; 50 CFR 16).

d. Nonnative potentially invasive marine animals and algae not listed on the above lists, as determined by Ecology in consultation with WDFW, or W DNR, or WSDA , o r WISC, or the Washington Aquatic Nuisance Species (ANS) Committee, or applicable federal agencies such as the USFWS.

3. Freshwater ProjectsPage | 27 Washington State Pesticide Permit Conditions Freshwater projects occur in rivers, streams, lakes, ponds, brackish inland water bodies, wetlands , or wet areas and target nonnati ve invasive freshwater animals. Freshwater projects are allowed for :

a. Prohibited or unlisted freshwater animals as identified in WAC 220

- 12

- 090.

b. Freshwater animals listed on the Washington Aquatic Nuisance Species Committee “watch list” of invasive species or on the WISC management priority list (http://www.invasivespecies.wa.gov/priorities.shtml)

.

c. Freshwater animals listed by the USFWS as injurious wildlife under the Lacey Act (18 U.S.C. 42; 50 CFR 16).

d. Nonnative potentially invasive freshwater animals not listed on the above lists, as determined by Ecology in consultation with WDFW, or WDNR, or WSDA, or WISC, or the ANS Committee, or applicable federal agencies such as the USFWS.

4. Specific Restrictions on the Application of Products

a. Except for emergencies , the Permittee must limit treatments that restrict public water use during weekends in high use areas or highly populated areas

.

b. Permittees must comply with the specific application restrictions for each product as identified in Tab le s 10 and 11

. T he Treatment Windows identified in Tables 10 and 11 were developed to avoid adverse impacts to priority species (federal

and

- state

- listed and other sensitive and vulnerable species)

. WDFW may periodically update the Treatment Windows when new information becomes available. Restrictions/Advisories identified in Tables 1 0 and 1 1 : Recreational restrictions apply to swimming, boating, water skiing, etc

. Swimming restrictions apply to primary contact activities such as swim ming, wading, and w ater skiing.

c. The Permittee must use Washington Department of Natural Resources Natural Heritage Program database to determine if sensitive

, threatened , or endangered (rare) plants are present in the proposed treatment area. If a rare plant does occur in or around the waterbody, the Permittee survey for the rare plant and mitigate for impacts if necessary The rare plant database is located at http://www1.dnr.wa.gov/nhp/refdesk/plants.html

.Page | 28 Washington State Pesticide Permit Conditions Table 10 : Marine Application Restrictions

Chemical or Control Measure Treatment Windows Restrictions/ Advisories Treatment Limitations

Sodium chloride & Potassium chloride No, but check with WDFW before

treatment to determine critical habitat

areas. None • Limit treatments to the lowest effective concentration or amount of these salts

necessary to kill the targeted organism.

• Limit treatment to docks, boat hulls, and fixed objects or defined areas.

• Spray or apply directly on target organisms when if they are ou t of water (apply at low tide).

• The Permittee may treat defined areas, such as marinas or coves, if the Permittee can l imit water exchange behind impermeable barriers. Chlorine No, but check with WDFW before

treatment to determine critical habitat

areas. If treating in an area accessible by the public, post buoys around the treatment

area. • Limit treatments to the lowest effective concentration or amount (e.g,. if using swimming pool pellets) to kill the targeted organism.

• Where practicable, use chlorine dioxide/sodium chlorite instead of sodium hypoch lorite or calcium hypochlorite.

• Use under tarpaulins or impermeab le covers secured over the invasive organisms

. Seal edges to the subst rate as thoroughly as possible.

• Limit treatment to docks, boat hulls, and fixed objects or defined areas where the Permittee can secure impermeable covers.

• Leave tarpaulins on for at le ast one day before removing

. If this is not possible, test for chlorine using a swimming pool test kit and neutralize any residual chlorine using ascorbic acid (vitamin C) before removing the cover.
Acetic Acid No, but check with WDFW before

treatment to determine critical habitat

areas. If treating in an area accessible by the public, post buoys around the treatment

area. Restrict swimming for

12 hours in the treatment area if spraying directly on organisms. • Limit treatments to the lowest effective concentration to kill the targeted organism (vinegar concentrations

– 5

- 10% are reported to be effective for soft

bodied marine organisms).

• Use under tarpaulins or impermeable covers secured over the invasive organisms

. Seal the edges to the substrate as thoroughly as possible.

• Limit treatment to docks, boat hulls, and fixed objects or defined areas where the Permittee can secure impermeable covers.

• Remove covers as soon as the target organisms are dead.

• Spray directly on target organisms if they are out of water (tidal).

• The Permittee may treat defined areas, such as marinas, if the Permittee can limitPage | 29 Washington State Pesticide Permit Conditions Restrict public access

to area when diluting concentrated acid. water exchange behind impermeable barriers.

Cal cium hydroxide /oxide (lime) No, but check with WDFW before

treatment to determine critical habitat

areas. If in an area accessible by the public, post buoys around the

treatment area. • Limit treatments to the lowest effective concentration or amount necessary to kill the targeted organism.

• Use under tarpaulins or impermeable covers secured over the invasive organisms and limit treatment to docks, boat hulls, and fixed objects or defined areas where the Permittee can secure impermeable covers.

• Remove c overs as soon as the target organism is dead.

• For direct applications, apply only to target organisms (e.g. invasive echinoderms)

. Do not treat un

- infested areas. Heat/Freezing No, but check with WDFW before

treatment to determine critical habitat

areas. None • Limit treatment to docks, boat hulls, and fixed objects or defined areas

• May use in conjunction with pressure washing to remove invasive organisms from docks and infrastructure.

Table 11 : Freshwater Application Restrictions

Chemical Treatment Windows Restrictions/ Advisories Treatment Limitations

Sodium chloride & Potassium chloride No, but check with WDFW before

treatment to determine critical habitat

areas. None • Use under tarpaulins or impermeable covers secured over the invasive organisms.

• Limit treatment to docks, boat hulls, and fixed objects or defined a reas where the Permittee can secure impermeable covers.

• The Permittee may treat defined areas, such as coves or marinas, if the Permittee can limit water exchange behind impermeable barriers.
Whole LakePage | 30 Washington State Pesticide Permit Conditions • The Permittee may treat small water bodies with potassium chloride where the threat of the invasive species outweighs other environmental damage and where water can be contained.

• For nonnative mussel eradication projects with potassium chloride, the Permittee must take steps to restore native muss el populations in the treated water body, when practicable.
Chlorine Yes, also check with
WDFW before

treatment to determine critical habitat

areas. Advise no swimming in area when placing chemicals under covers and removing

covers. • Limit treatments to the lowest effective concentration or amount (e.g. if using swimming pool pellets) necessary to kill the targeted organism.

• Where practicable, use chlorine dioxide/sodium chlorite instead of sodium hypochlorite or calcium hypochlorite.

• Use under tarpaulins or impermeable covers secured over the invasive organisms

. Seal edges to the substrate as thoroughly as possible.

• Limit treatment to docks, boat hulls, and fixed objects or defined areas where the Permittee can secure impermeable c overs.

• Leave tarpaulins on for at least one day before removing

. If this is not possible, test for chlorine using a swimming pool test kit and neutralize any residual chlorine using ascorbic acid (vitamin C) before removing the cover.
Acetic Acid No, but check with WDFW before

treatment to determine critical habitat

areas. Advise no swimming in area when placing chemicals under covers and removing

covers. • Limit treatments to the lowest effective concentration to kill the targeted organism (vinega r concentrations

– 5

- 10% are reported to be effective for soft

bodied organisms).

• Use under tarpaulins or impermeable covers secured over the invasive organisms

. Seal the edges to the substrate as thoroughly as possible.

• Limit treatment to docks, boat h ulls, and fixed objects or defined areas where the Permittee can secure impermeable covers.

• Remove covers as soon as the target organisms are dead

. Calcium hydroxide/ oxide (lime) No No • Whole water body applications permitted.

• The pH of the receiving water must remain between 6 and 9

. Stop treatment if pH goes above 9.0.
Rotenone Yes, also check with
WDFW before Follow EPA label restrictions • Endangered Species Act (ESA) listed fish species must not be present at the time of treatment and for three months following treatment, unless the state and federal fish agencies approve a treatment.

• Except for emergencies or when in situations where inva sive species may movePage | 31 Washington State Pesticide Permit Conditions treatment to determine critical habitat

areas. out of water body if treatment is delayed, limit treatment to periods of low water, usually September or October, unless the water body has a closed basin.

• Limit airborne dust

. In open water areas accessible by boat, use powdered

rot enone mixed with water and apply as a slurry.

• Use liquid rotenone for spot applications only in areas that are not practicably accessible by boat.

• Unless the outlet is being treated for invasive species, in water bodies with flowing outlets, rotenone must be neutralized to eliminate downstream impacts. Below the neutralization zone (distance the water travels in 20 minutes), the rotenone must be totally neutralized using potassium permanganate

. Residual potassium permanganate, not to exceed 2 mg/L past the neutralization zone.

• Follow monitoring requirements in Tables 1 2

- 15.

• Restock the water body with appropriate fish species after eradication of the target species.

• Unless the outlet is being treated for invasive species, in water bodies with flowing outlets, rotenone must be neutralized to eliminate downstream impacts. Below the neutralization zone (distance the water travels in 20 minutes), the rotenone must be totally neutralized using potassium permanganate

. Residual potassium permanganate, not to exceed 2 mg/L past the neutralization zone.

• Follow monitoring requirements in Tables 1 2

- 15

.

• Restock the water body with appropriate fish species after eradication of the target species. Antimycin

- A Yes, also check with
WDFW before

treatment to determ ine critical habitat

areas. Follow EPA label restrictions • Use only in shallow water bodies and streams.

• ESA

- listed species must not be present at the time of treatment and for three months following treatment, unless the state and federal fish agencies approve the treatment.

• Except for emergencies or in situations where invasive species may move out of water body if treatment is delayed, limit treatment to periods of low water, usually September or October, unless the water body has a closed basin.

• Unl ess the outlet is being treated for invasive species, in water bodies with flowing outlets, antimycin

- A must be neutralized to eliminate downstream impacts

. Below the neutralization zone (distance the water travels in 20Page | 32 Washington State Pesticide Permit Conditions minutes), the antimycin

- A must be totally neutralized using KMnO 4

. Residual KMnO 4 , not to exceed 2 mg/L past the neutralization zone.

• Follow monitoring requirements in Tables 1 2

- 15

.

• Restock the water body with appropriate fish species after eradication of the target species.

Potassium permanganate ( KMnO 4 ) Yes, also check with
WDFW before

treatment to determine critical habitat

areas. • Use under tarpaulins or impermeable covers secur ed over the invasive organisms.

• Limit treatment to docks, boat hulls, and fixed objects or defined areas where the Permittee can secure impermeable covers.

• The Permittee may treat defined areas, such as marinas, if the Permittee can limit water exchan ge behind impermeable barriers.

• The Permittee may treat enclosed, small water bodies where the threat of the invasive species outwei ghs other environmental damage.

• When used to neutralize rotenone or antimycin treated waters

– use calibrated equipment to achieve the minimum effective concentration of potassium permanganate necessary to oxidize the rotenone with in the neutralization zone.
Endothall (Hydrothol 191 TM ) Yes Contact recreational restriction during and
24

- hours after treatment (in the entire water body) • Treatment shall occur from the shoreline outward into the waterbody.

• Juvenile salmon species and ESA

- listed species must not be present at the time of treatment.

Sodium carbonate peroxyhydrate No Swimming advisory during treatment, and
2

- hour post

- treatment None

Methoprene No None • Do not apply in state

- listed restricted use areas identified Condition 4.B.4 without consulting with WDFW habitat biologists. Chelated Copper Yes None • Use lowest effective concentration to kill targeted organism

• Sediment copper concentrations in the treatment area must be less than 110 mg/kg (emergency exception for zebra or quagga mussel treatment, if there are no other suitable controls available).

• Do not apply copper if the water hardness is less than 50 mg/ L expressed as calcium carbonate (emergency exception for zebra or quagga mussel treatment).Page | 33 Washington State Pesticide Permit Conditions • Do not apply copper if the pH is less than 6.0 (emergency exception for zebra or quagga mussel treatment).

• Juvenile salmon species and Endangered Species Act li sted species must not be present at the time of treatment, unless the state and federal fish agencies approve the treatment.
P

. fluorescens strain CLO145 No None None

Heating/ cooling No, check with
WDFW for critical habitat

areas. None • Limit treatment to docks, boat hulls, and fixed objects or defined areas.

• Direct heat or cold only at target organisms

• May use in conjunction with pressure washing to remove invasive organisms from docks and infrastructure.Page | 34 Washington State Pesticide Permit Conditions 5. Monitoring for Specific Chemicals

The Permittee must monitor for specific chemicals/products as identified in Table s 1 2

- 15

. All laboratory results for chemical concentrations must include the following information:

a. Sampling date

b. Sample location (water body name and location within the water body)

c. Date of analysis

d. Parameter name

e. Chemical Abstract Service (CAS) number

f. Analytical method number

g. Method detection limit (MDL)

h. Laboratory practical quantitation limit (PQL)

i. Reporting units

j. Concentration detectedPage | 35 Washington State Pesticide Permit Conditions Table 12 : Invasive Species Monitoring Chemical or Control Measures Specific Monitoring Requirements Sodium chloride & Potassium chloride • For whole lake treatments or treatments of areas sequestered behind barriers within a larger fresh water body, the Permittee must at a minimum measure potassium or sodium chloride concentrations at one or more representative sampling locations pre

- treatment, one, and five days post

- treatment to determine actual water body concentrations. Chlorine • The Permittee must monitor for chlorine concentrations under impermeable covers on a representative number of sites before removing the covers

. Permittee may use swimming pool test kits for this purpose.

• If monitoring demonstrates that undercover chlori ne concentrations are always under 0.5 mg/L before removal (at a representative number of sites and for the same chlorine formulation), the Permittee may suspend monitoring upon Ecology approval.
Acetic Acid • When removing impermeable covers, monitor pH levels in the receiving water before and immediately after cover removal

• When directly spraying the organisms, monitor the pH of receiving waters directly adjacent to the organisms immediately before and after treatment. Calcium hydroxide/oxide (lime) For Freshwater Treatments Only

• Measure pH once a day before treatment; once in the morning and once in the afternoon during treatment; and for ten days following treatment at a representative site within the wat er body.

• For applications using continuous injection systems, measure pH once in the morning and once in the afternoon Rotenone and Antimycin

- A • See Tables 13

- 15 for specific monitoring requirements for rotenone and antimycin

- A. Copper • Before applying copper, measure sediment copper concentrations in a composite sample of sediment from a representative treatment area (composite sample from 5 areas with sediment taken from the top 5 cm of sediment and homogenized).

• Measure pH and hardness prior to treatment. Heat/Freezing • If used in conjunction with pressure washing to remove invasive organisms from docks and infrastructure, measure the temperature of the receiving water immediately before and immediately after the activity.Page | 36 Washington State Pesticide Permit Conditions Table 13 : Pre

-- treatment monitoring for rotenone and antimycin

- A

Parameters Units Minimum Sampling Frequency Type Sampling Point

pH Standard Once Grab Representative Temperature °Fahrenheit (F) Once Grab Representative Alkalinity 1 mg/L CaCO 3 Once Grab Worst

- case scenario Organic demand 1,2 Standard Once Grab Worst

- case scenario

1 Only required when the Permittee uses potassium permanganate to neutralize rotenone.

2 The Permittee must use the guidelines provided in Engstrom

- Heg (1971) to determine organic demand for KMnO 4

.

Table 14 : Post

- treatment monitoring for rotenone and antimycin

- A

Parameters Units Minimum Sampling Frequency Type Sampling Point

pH Standard Once Grab Representative Temperature °F Once Grab Representative
Rotenone Trout Toxicity Bioassay: 24

- hr live box test (five trout); 60% trout survival Hours until 60% survival Once approximately three to eight weeks after treatment Observation (No lab accreditation required) Worst

- case scenario

If rotenone formulations containing
Benzene are used : Volatile Organic Compound (VOC) , semi μg/L Four weeks post treatment and every week thereafter until

non

- detection Grab Worst

- case scenarioPage | 37 Washington State Pesticide Permit Conditions VOC, and any other inert ingredients listed on the Material Safety Data Sheet (MSDS) 1

1 The Permittee must sample for VOC and semi

- VOC when the liquid rotenone product used contains solvents that are listed on the label and/or the MSDS.

Table 15 : Monitoring for downstream and neutralized waters after rotenone or antimycin

- A treatment

Parameters Units Minimum Sampling Frequency Type Sampling Point

pH Standard • Once pre

treatment

• Once post

treatment Grab Representative

Temperature °F • Once pre

treatment

• Once post

treatment Grab Representative

Alkalinity 1 mg/L as CaCO 3 • Once pre

treatment Grab Worst

- case scenario

Organic demand 1,2 Standard • Once pre

treatment Grab Worst

- case scenario

Rotenone (if applied)3 mg/L • Once 24 hours after

treatment Grab Worst

- case scenarioPage | 38 Washington State Pesticide Permit Conditions If rotenone formulations containing
Benzene are used : VOC, semi

- VOC, and any other inert ingredients listed on the MSDS 3 μg/L • 24 hours post

treatment

• Four weeks post

treatment Grab Worst

- case scenario

Antimycin

- A (if applied)3 μg/L • Once 24 hours following

treatment Grab Worst

- case scenario

Rotenone Trout Toxicity Bioassay: 24

- hr live box test (5 trout) % survival • Begin test at time of

treatment

• Repeat weekly until upstream water is detoxified. Observation (No lab accreditation required) Worst

- case scenario

1 Only required when the Permittee uses potassium permanganate to neutralize the rotenone.

2 The Permittee must use the guidelines provided in Engstrom

- Heg (1971) to determine organic demand for KMnO 4

. 3 The Permittee must use EPA approved testing methods in 40 CFR Part 136Page | 39 Washington State Pesticide Permit Conditions Condition 11 . FOREST CANOPY PEST CONTROL

Permittees performing forest canopy pest control must follow the requirements in Title 76 RCW (Forests and Forest Products)

.

Condition 12: ANNUAL REPORTING

A. Permittees must submit an annual report to Ecology containing the following for the

treatment season:

1. Permit Number

, 2. Permittee Name

, 3. Name of the location/waterbody treated., 4. Active ingredient(s) used(e.g. Bti, permethrin, etc.), 5. Total amount of active ingredient applied for each season,
6. Total acreage applied to,
7. Measurement units (pounds or gallons), and 8. Attach any monitoring results taken as required by Conditions 4

– 12 with the annual report. 9. Attach any Treatment Window determinations from WDFW to the annual report, including lake name, location (lat/long), treatment windows dates, and the reason for the treatment restrictions (e.g. sa lmonid smolts, grebe nesting, etc ). This should be in a letter or email from WDFW staff confirming the Treatment Window change.

B. Ecology must receive the annual report by December 31 of each year. Mail the annual report to:

Department of Ecology
Water Quality Program Attn: Aquatic Pesticides Permit Manager PO Box 47600 Olympia, WA 98504

C ondition 13

. PUBLIC NOTICE

Ecology includes public notification and treatment area postings in the pesticide permits it issues. State law does not require the publ ic notification and treatment area postings

. They are intended to respect the public’s right to know, and to protect the public health and welfare by reducing the public’s exposure to pesticides. Ecology st r ongly recommends that the public be provide d wi th public notice of pesticide treatment s through public notification and treatment area postings.Page | 40 Washington State Pesticide Permit Conditions The permittee sh ould publish a p ublic notice in a newspaper of general circulation in the area where treatment will occur, prior to the first application of the season. The newspaper notice sh ould contain: i. Proposed schedule of treatments for the season

. ii. Common name of the water body to be treated. iii. Chemicals to be used. iv. Any water use restrictions or precautions

v. Contact infor mation of the Permittee and any agency staff involved

. vi. Ecology’s regional twenty

- four (24) hour Emergency number. vii. Notification shall explain the project and explain that any treated areas will be flagged no more than 48 hours before treatment begins.

The Permittee is encouraged to use Ecology posting templates contained in each pesticide permit to post the treated areas, where feasible, at 100

- foot intervals to 400 feet beyond the boundary of the treatment area . Signs posting treatment areas sh ould be posted before treatment commenced, but no more than 48 hours before the start of treatment. Signs should also be posted in the commonly spoken language of the area where treatment is occurring.