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ameo <br />• <br />2.11 High Volume Solution Collection System <br />The High Volume Solution Collection System (HVSCS) is comprised of HVSCS piping, the <br />HVSCS riser piping and foundation, and the HVSCS sump. The HVSCS riser system is <br />presented in IFC Drawings A340, A345, and A350, and the HVSCS piping is presented in <br />IFC Drawings A400 and A410. <br />The HVSCS riser piping system consists of four vertical risers with 24-inch outside diameter <br />(O.D.) by 0.375 inch wall thickness carbon steel piping. Stainless steel Type 304 standard <br />flow shutter screens with 0.25 inch slots, 20-foot minimum open screen section, 24-inch <br />O.D. by 0.375-inch wall manufactured by Roscoe Moss were installed as part of each <br />vertical riser. <br />Ames installed schedule 40 steel inlet pipe to connect the primary solution collection system <br />piping to the vertical risers. A 36-inch diameter DR21 HDPE perforated pipe was used as <br />an equalizer pipe to connect the primary solution collection pipes at the entrance to the <br />PSSA sump and to connect each riser. Ames installed approximately 35 linear feet of <br />36-inch diameter DR21 HDPE equalizer pipe. <br />Each HVSCS riser foundation consists of a 10-foot by 10-foot by 1-inch steel base plate, a <br />layer of conveyor belting, 3-inch thick closed cell foam, and Geocomposite Clay Liner (GCL). <br />Ames installed approximately 400 square feet of each of these components. <br />Ames installed approximately 14,017 linear feet of 4-inch diameter PCPE Tertiary HVSCS <br />pipe; 2,984 linear feet of 8-inch diameter, 325 linear feet of 12-inch diameter, 817 linear feet <br />of 15-inch diameter PCPE secondary HVSCS pipe; and 5,987 linear feet of 26-inch diameter <br />perforated DR11 HDPE Primary HVSCS Pipe. <br />Ames began installing the PCPE HVSCS pipes in July 2010, and completed in November <br />2010. Pipe locations are shown on Record Drawing No. 7 in Appendix A. Ames haunched <br />pipes with DCF and kept pipes in place during DCF placement. <br />AMEC Earth & Environmental, Inc. <br />2000 S. Colorado Blvd 2-1000 <br />Denver, CO 80222 <br />Tel 303-935-6505 <br />Fax 303-935-6575 www.amec.com <br />19