Laserfiche WebLink
Silver Lake Water&Sewer District <br /> All material requirements for water distribution and sewer mains shall be in accordance with <br /> Section I and II of Silver Lake Water& Sewer District Standards, included as Appendix C-7 of <br /> these contract documents. <br /> 9-37 GEOFOAM NEW <br /> Geofoam blocks shall have a density of 1.35 lb/ft3, and shall comply with ASTM D6817. <br /> 9-38 GEOMEMBRANE NEW <br /> Geomembrane shall consist of textured (roughened) surface polyvinyl chloride, high density <br /> polyethylene, or linear low density polyethylene geomembrane with a thickness of 28.5 to 31.5 <br /> mils (0.72 to 0.80 millimeters). <br /> Conform to the following table: <br /> Geomembrane Type Test Method <br /> Polyvinyl chloride (PVC) ASTM D717&1 <br /> High density polyethylene (HDPE) GRI<2)Test Method GM13 <br /> Linear low density polyethylene (LLDPE) GRP)Test Method GM17 <br /> (1) The minimum average asperity height is 10 mils (0.25 mm). Of 10 readings, 8 of 10 must <br /> be greater than or equal to 7 mils (0.18 mm) and the lowest individual reading must be <br /> greater than or equal to 5 mils (0.12 mm). <br /> (2) Geosynthetic Research Institute. <br /> END DIVISION 9 <br /> Swift Green Line—Corridor Stations Special Provisions SP218 <br /> May 2017 <br />