Laserfiche WebLink
743 Kearney Street, <br /> VAhUE Benicia,CA 94510 <br /> Ph. : 707 7719009 <br /> ed" ENGINEERING Fax : 707 747 9996 <br /> October 6,2014 <br /> Ms.Erin Fanning <br /> Environmental Manager <br /> Forward Landfill Inc. <br /> 9999 South Austin Road <br /> Manteca, CA 95336 <br /> Forward Landfill Inc.Evaporation Basin(WMU-F) <br /> Leachate Collection and Recovery System(LCRS)Continuity Test <br /> Dear Ms. Fanning: <br /> On August 22, and 23,2014,Value Engineering conducted an LCRS continuity test at the 1.0 acre Evaporation <br /> Basin(WMU-F)at Forward Landfill in Manteca, California.Attached with this letter are the results of the test. <br /> The test conducted was a Pass indicating that a conduit exists across the LCRS unit. <br /> The test consists of injecting a high concentration tracer dye into the far side of the LCRS system and allowing <br /> the liquids to migrate through the unit to settle in the low point of the LCRS sump.The non-toxic tracer dye <br /> liquids allow migration to the lowest point of the sump. Once the tracer dye has migrated through the system, it <br /> can be extracted and detected from the sump extraction pipe indicating that a conduit is present through the unit. <br /> If excessive liquid is backed up into the drainage layer of the LCRS,the tracer dye will take longer to migrate to <br /> the sump. Prior to the test,your staff was requested to pump all liquids from the LCRS sump and collect a pre- <br /> injection sample for observation purposes. <br /> The LCRS continuity test is a qualitative test and determines if a conduit exists through the unit. If tracer dye is <br /> extracted and detected,the test passes. If no tracer dye is detected from the LCRS sump,the test fails.The test <br /> is conducted in two phases: the Injection phase,and the Detection phase. All testing information was recorded <br /> on the attached LCRS Continuity Testing Form. <br /> www.vaIuengineering.us <br />