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CITY OF EVERETT STORMWATER MANAGEMEII�MANUAL <br /> i <br /> ! acre,which can be too much. In addition,pump problems can occur at higher rates due to <br /> increased viswsity. <br /> 17. PAM is to be applicd at a maximum rate of two-thirds of a pound of PAM per 1,000 gallons <br /> wate�(80 mg/L)per I acre of baze soil. Table 3.8 can be used to detetmine thc PAM and water <br /> application rate for a disturbed soil area. Higher concentrations oCPAM do not provide any <br /> additional etTectiveness. <br /> Table 3.8 PAM and Water Application Rates. <br /> Disturbed Arca(ae) PAM(Ibs) Watar(gal) <br /> 0.50 0.33 500 <br /> 1.00 0.66 1,000 <br /> 1.SD 1.00 1,500 <br /> 2.00 1.32 2,000 <br /> 2.50 1.65 2,SOD <br /> 3.OD 2.00 3,000 <br /> 3.50 2.33 3,5�0 <br /> 4.00 2.65 4,OOD <br /> 4.50 3.00 4,SOD <br /> 5.00 3.33 5,000 <br /> ) The Preterred �iethod of ApplYcallon: <br /> ' 1. Premeasure the area where PAM is m be applied and calculate the amount of produc.z�d water <br /> necessary to provide coverage at the specified application rate(two•thirds of a pound PAM! <br /> I,000 gallonslacrc). <br /> � 2. PAM has high solubility in water,but dissolves vcry slowly. Dissolve prcmeasured dry granular <br /> PA��1 with a Irnown quantiry of clean water in a bucket several hours or ovemighL Mcchanical <br /> mizing will help dissolve t6c PAM. Always add PAM to uater-not water to PAM. <br /> 3. Pre•fill the water truck about one�cighths full with watec The watcr does not have to 6c potablc, <br /> but it must have relatively low hubidity—in ihe range of 20 NTU or Icss. <br /> 4. Add PAM/water mixture to the tcuck. <br /> 5. Co�ipletely fill the water truck to specified volume. <br /> 6. Spray PA�Wwater mixture onro dry soil until ihe soil surface is uniformly and completcly wetled. <br /> M Alternate Method: <br /> PAM may also be applied as a powder at the rate of 5 pounds per acre. This must be applied on a day tF,� <br /> is dry. For arens Icss than 5 lo l0 acres,a hand-held"organ grindcr"fertilizer spn adcr sct to the smallest <br /> sening will work. Tractor-mounred spreaders will work (or larger arcaz. , <br /> Maintenanse Standards <br /> �. pAM may be reapplicd on activcly worked arcas aftcr a 46•6our period. <br /> 2. Reapplication is not rcquacd unless PAM treatcd soil is disturbed or unless turbidiry levcls show <br /> the need Eur an additional application. If PAIN trcated soil is left undish¢bed a reapplication may <br /> bc neccssary aticr 2 months. :vtore PAM applications may be required for stcep slopes,sihY and <br /> Volume II—Construction Stormwater Pollufion Prevention <br /> 3•24 <br />