AgdaPkt 2016-02-22 Closed and Interview and Joint SA PFA

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SURFACE SPRAY /INJECTION SLOW-FLOWING OR QUIESCENT WATER BODIES ALGAECIDE APPLICATION For effective contro l, proper chemical concentration must be maintained for a mini· mum of three hours contact time. The application rates 1n the chart ar& based on static or minimal flow situations Where significant dilution or loss of water from un· regulated inflows or outflows occur (rar.eways) within a three hour period , chemical may have to be metered in. 1 Identify the form of algae growth present as one of the following types: Planktonic (suspended), Filamentous (mat forming), or Benthic (Chara/Nitella) <:~nd estimate the density of growth (Low, Medium , r-----u...,-';....;_;....;_;....;_;..___-, High) Use Table 1 · Copper Con- centration to select the desired PPM (Parts per Million) Copper needed based upon the algal form and density 2. Refer to !he Ta!Jie 2 -Product Ap· plication Rate and determine gallons of product needed per Acre-foot corre- sponding to the desired PPM ,..:..::.::.:.::..::.....;:....:..::.=~=;=::.r:..:.::.:;:..J..::T-=~-,..--.---.--. concentra lion 1-.:....:..;c;.;...;:c:.<;J:..:.:....-+=F=+=~...::.:.::-r::c'-=+;:.:.:...F=+=~~ determinetl In Step #1. 3 Determine acre-feet within the intended treatment area (area of infestatfon) by measuring length, width plus av(;jraging &everal depth readings within the treat. menl area. Use the formula : Length (ft) x Width (fU X A'lg Depth 1ft.)-Acre -Feet 43,560 4. Multiply Acre-Feet calculated ln Step #3 times the gallons of this product deter· mined m Step #2 to determine number or gallons of this product required for the intended treatment area . 5 Before applying, dilute the requu·ed amount of this product with enough water to ensure even distribution with the type of equipment being used. Typical dilution range is 9:1 when using backpack-type sprayer or up to 50 : I when using water pump equipment or large tank sprayers , 6. Break up noaling algae mats manually before spraying or with force of power sprayer ii one is used Use hand or power sprayer adjusted to ra in -sized d roptels to cover area evenly tak in g water depth Into conslderatlon. If using uncleiWater injection systems such as drop hoses or booms with weighted drop hoses. ensure boat pattern is un iform throughout treatment area. Spray shoreline areas first to avoid trapping fish 7. Clean spray equipment by nushin<J with clean water after treatment and follow STORAGE AND DISPOSAL Instructions on the label for empty or remaining par- tial containers 8. Under conditions of heavy infestation, treat on ly Ya to Y2 of the water body at a time to avoid fish suffocation caused by oxygen depletion from decaying algae. (see additional Environmental Hazards) OTHER TREATMENT FACTORS AND CONSIDERATIONS • Calm and sunny conditions when water temperature is at least 60"F will usually expedite control results. • Effective control of algae requires dtrect contact with all cells throughout the water column, since these plants do not have vascu lar systems to transport copper from cell to cell. • Vtsible reduction in alg ae growth should be observed in 24 to 48 hours following application with full Infestation and water temperatures . • Re-treat areas if re-growth or new growth begins to appear and seasonal cont rails desired Iden tify new growth to re-check requ ired copper concentration that may be needed for contml. Apply treatment along the shore ancl proceed outwards 1n bands to allow fish to move into untreated areas. • No more than %of the water body may be treated at one time . (refer tu Enviromuen- tal Hazards for additional guidance) ·The minirnurn ret reatment interval between consecutive treatments is ·14 days. CUTRINE-PLUS Granular Algaecide may be used as an alternative in low volume flov>J situations, spot treatments or treatment or bottom.growing algae in deep wate1 . Penmits: Some states may require permits for the application of this product to public waters. Checl1 with your local authorities. HERBICIDE APPLICATION (For Hydrilfa Control) CUTRINE-PLUSf>: Control of Hydnlla verttcillata can be obtained from coppe1 con- centrations of 0.4 to 1.0 ppm resulting From product treat ment. Choose the applica- tion rate based upon stage and density of Hydrilla growth and respective water depth from the chart below. CUTRINE-PLUS: HARVESTER'' TANK MIX On wate rs where enforcement of use restrictions for rec- reational , domestic and irrigation 11ses are acceptab le, the following mixture can be used as an alte rnative Hydrilla Mid-Season control method. Tank mix 3 gallons M:lderate Density Late Season High Dens rty 4.8 7.3 5.4 8.1 6.0 9.0 4.8 7.2 60 9.0 72 90 108 8,4 10.5 12.6 9.6 12.0 '14.4 10.8 13.5 16.2 12.0 15.0 18.0 of CUTRINE·PLUS wlth 2 gallons of HARVESTER. Apply mixture at the rate of 'Anplicatonrales fa depths grealef than six feet may be obtained by adding lhe rates g1ve1• fa< the apl)(opriate combination or de~ll1s Application ralas shoul~ 5 gallons per surtace nol resull in excess ol1.0 ppm copper conceoltalion I'Aihln lreatetl Ytaler. acre. Dilute with at least 9 parts water and app ly as a surface spray or underwater Injection. ObSetve all cautions and restrictions on th& labels of both products used in this mtxture. FLOWING WATER DRIP SYSTEM APPLICATION· FOR USE IN POTABLE WATER AND IRRIGATION CONVEYANCE SYSTEMS PRE-TREATMENT CONSIDERATIONS In Crop and Non-Crop Irrigation Conveyance Systems: Ditches Canal~ & Lat era ls . product treatments must be applied as soon as algae or aquatic vascular plants begin to interfere noticeably with normal delivery of water (clogging of lateral headgates, suction screens, weed screens and siphon tubes). Delaying treatment could perpetuate the problem causing massing and compacting of plants. Heavy infestations and low flow conditions may require Increasing water flow rate during app li cation Aocurately determine water now 1ates In the absence or weirs. orifices. or similar devices which give aocurale water flow measurements, volume of flow may be esti- mated by the following formula Average Width (feet) x Average Depth (feet) x Velocity• (feet/second) x 0.9 =Cubic Feet per Second (C.F.S.) "Velocity is the lime it takes a floating object to travel a given distance Dividing the distance traveled (feet) by the time (seconds) will yield velocity (feet/second) Repeat this measurement at feast three limes at the Intended application site tl1en averaged. ·After accurale ly determining the wate r flow rate in C.F.S or gallons/minute. lind the corresponding product drip rate on the chart below. • Ca lcu late the amount of this product needed to maintain the drip rate For a periOd of 3 hours by multiplying Ots./Hr. x 3; mt/Min x 180; or Fl Oz./Min . x 180. Dos· age will maintain 1.0 ppm Copper concentration in the treated water for the 3 hour pe- riod In traduction of the chemical should be made in the channe l at weirs or other WATER FLOW RATE C.F.S. Gai./Min. 1 450 2 900 3 1350 4 1800 5 2250 PRODUCT DRIP RATE Qts./Hr. MI/Min. Fl. Oz./Min. 1 16 0.5 2 32 11 3 47 1.6 4 63 2.1 5 79 2.7 turbulence-creating structures to promote the dispers1on of chem ical. • POUI the required amount of this product into a drum or tank equipped with a brass needle valve and oonstructed to maintain a constant drip rate. Use a slop watch and appropriate measuring container to set the desire d drip rate. Readjust accord- ingly if flow rate changes during the 3 hour treatment period . • Dista nce or control obtained down the waterway will vary depending upon density of vegetation growth. Treatment period may have to be extended up to 6 hours in areas where control may be difficult due to high flows or significant growth. Penoclic maintenance treatmen ts may be required to maintain seasonal control. 6.3.A. - Page 105