10721 EVERGREEN WAY 2018-01-01 MF Import

:aROUP FOUR� INC, � 5-10-89 �11 �24AM �EVERETT WA PBLC WRKS� 2063823818�# 4 � „ develo�ments with a high risk of polluted stormwater xunofP, regardless of pxo�ect size. High risk land uses include but are no� limi�ed to gas stations, automotive parts stores, convcniance s�oYes with fuel islands and auto wrecking yards. 4.�3 .15.2 Grass lined swalas ehgll be hydroseeded trom Apzil 1 through October 1. Gxass lined swale c4nstruction during the rest of �he yeaX must be sodded� 4.3. 15.3 Runoff should not be dischaxged to grass linad swales during construction. 4.3. 15.4 Grass lined swaxes in the Silvex Lake Waterahed shall be mowed to a rainimum heiqht at the end oP each growing season. Grass linad swales outeide ' � 5ilver Lake watershed shall be raowed to a height of six to eight inches at the end of each growing season. 4.3. 15.5 The soils • underlying grass lined swales shall be tzlled .prior to sodding or hydroseeding to enhance soil infiltration. 4.3 .15. 6 The total length of grass lined swaxe is datermine3 as follows: Total Site Paved Ares Length Under 10,000 sq. ft. Not reqUired i 10,000 to 50, 000 sq. ft. 100 Peet plus 1 liriear foot for each 400 sq ft of paved area above 10�000 5q Yt. � Greater than 50, 000 sq. ft. 200 teet plus 1 linear foot for each 800 sq ft of paved area above 50,000 sq ft. 4.3 . 15.? Plant List for Grass Lined Swales Bo�.anical Name Common Name Alopeourus pratensie Meadow Foxtail Alopecurus al:undinceus Poir. Craeping Foxtail Agroti� alba Redtop Festuca rubra Creeping Rad Fescue Lo�ium ssp. , L. meltiflorun AnnuaJ. ryegrass (es) Phleum pratense Timothy Tri;folium repens 'New Zealand� White clover � taken from: Grasses and Lequmes for Soil Conservation in the PaciPic Northwest and Great Basin States, Agricultural Handbook No. 339, Soil Conservation Sexvice, U.S. Aepartment of Agriculture repring January 1979.