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�I 1 PENSKE TRUCK LEASING EVERETT ONSITE IMPROVEMENTS CONSTRUCTION STORMWA TER POLLUTION PREVENTION PLAN Sitts & Hill Engineers, Inc. Job Number 17,710 • Irrigation. . Reapplication of mulch. • Repair of failed slope surfaces. This technique works with standard hydromulch (1,500 pounds per acre minimum) and BFMlMBFMs (3,000 pounds per acre minimum). • Seed may be installed by hand if: . Temporary and covered by straw, mulch, or topsoil. . Permanent in small areas (usually less than 1 acre) and covered with mulch, topsoil, or erosion blankets. . The seed mixes listed in the tables below include recommended mixes for both temporary and permanent seeding. • Apply these mixes, with the exception of the wetland mix, at a rate of 120 pounds per acre. This rate can be reduced if soil amendments or slow - release fertilizers are used. • Consult the local suppliers or the local conservation district for their recom- mendations because the appropriate mix depends on a variety of factors, including location, exposure, soil type, slope, and expected foot traffic. Altern- ative seed mixes approved by the local authority may be used. • Other mixes may be appropriate, depending on the soil type and hydrology of the area. . Table II-4.1.2 Temporary Erosion Control Seed Mix (p.280} lists the standard mix for areas requiring a temporary vegetative cover. Table 11-4.1.2 Temaorary Erosion Control Seed Mix % Weigh % Purity % Germination Chewings or annual blue grass 40 98 90 Festuca rubra var. commutata or Poa anna Perennial rye 50 98 90 Lolium perenne Redtop or colonial bentgrass 5 92 85 Agrostis alba or Agrostis tenuis White dutch clover 5 98 90 Trifolium repens . Table II-4.1.3 Landscaping Seed Mix (p.281) lists a recommended mix for land- scaping seed. 2014 Stormwater Management Manual for Western Washington Volume ll - Chapter 4 - Page 280 SITTS & HILL ENGINEERS, INC. 30 TACOMA, WASHINGTON