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1 Table 11-4.1.9 PAM and Water Application Rates (continued) Disturbed Area (ac)PAM (lbs)Water(gal) 1 3.00 2.00 3,000 3.50 2.33 3,500 4.00 2.65 4,000 4.50 3.00 4,500 5.00 3.33 5,000 The Preferred Method: . Pre-measure the area where PAM is to be applied and calculate the amount of product and water necessary to provide coverage atthe specified application rate (2/3 pound PAM/1000 gallons/acre). I . PAM has infinite solubility in water, but dissolves very slowly. Dissolve pre-meas- ured dry granular PAM with a known quantity of clean water in a bucket several 1 hours or overnight. Mechanical mixing will help dissolve the PAM. Always add PAM to water- not water to PAM. • Pre-fill the water truck about 1/8 full with water. The water does not have to be pot- able, but it must have relatively low turbidity-in the range of 20 NTU or less. . Add PAM/Water mixture to the truck 1 • Completely fill the water truck to specified volume. . Spray PAM/Water mixture onto dry soil until the soil surface is uniformly and com- pletely wetted. An Alternate Method: , PAM may also be applied as a powder at the rate of 5 lbs. per acre. This must be applied on a day that is dry. For areas less than 5-10 acres, a hand-held "organ grinder"fertilizer spreader set to the smallest setting will work. Tractor-mounted spreaders will work for lar- ger areas. The following shall be used for application of powdered PAM: . Powered PAM shall be used in conjunction with other BMPs and not in place of other BMPs. . Do not use PAM on a slope that flows directly into a stream or wetland. The storm- water runoff shall pass through a sediment control BMP prior to discharging to sur- face waters. . Do not add PAM to water discharging from site. ' . When the total drainage area is greater than or equal to 5 acres, PAM treated 2014 Stormwater Management Manual for Western Washington Volume II- Chapter 4 -Page 302