11102 EVERGREEN WAY 2018-01-01 MF Import

, If fencing is required due to the above criteria, the location of the fencinq and appropriate gates must be shown on the plans. To meet City standards, the fence must be 6� high. The following note regarding pond berm materials on the plans muet be included on the plans: NOTE: Berm soils shall consist cf material conforminq to the followinq gradation: Sieve Size � Passing , ' 3�� 10 0 �4 65-90 #`200 12-20 The following notes regarding construction of the wetpond treatment cell, and the topsoil specification, must be included in a conspicuous place on both the storm drainage plans and the landscape plans: CONBTRQCTION OF WETPOND TREATMENT CELL Over-excavate the wetpond treatment cell by a minimum of 6 inches as compared to final grade. Immediately after it has been graded, rouqhen the bottom and sides of the treatment cell by rakinq and place topsoil (a minimum of 6 inches) to bring the bottom elevation to final design grade. Sod the treatment cell immediately after the topsoil has been placed. Lay sod to a minimum o€ i.o feet of vertical depth above the bottom of the treatment cell. Lay the sod pieces with their long axis perpendicular to the direction of flow in the cell and stagger the pieces to avoid a continuous longitudinal seam in the bottom of the cell. To plant the required wetland vegetation, punch holes in the sod with a bar or stake approximately equivalent to the diameter of the plants� root wads. Insert the plants in the holes and tamp the sod and earth down around the plants. Locate the plants in the bottom of the treatment cell only and in a staggered pattern - not in a straight line. O • Topsoil sha13., at a minimum, meet the standard for Topsoil Type A, as specified in section 9-14.1(1) of the i 1991 Standard Specifications for Road, Bridge, and Municipal Conatruction (WSDOT, APWA) with the following modification - 100$ of the topsoil shall pass through a 1/2" sieve.