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August 11, 2015 <br />Ms. Erin Fanning <br />Environmental Manager <br />Forward Landfill Inc. <br />9999 South Austin Road <br />Manteca, CA 95336 <br />Dear Ms. Fanning: <br />743 Kearney Street, <br />Benicia, CA 94510 <br />Ph.: 707 7719009 <br />Fax: 707 747 9996 <br />Forward Landfill Inc. Leachate Pond (West) <br />Leachate Collection and Recovery System (LCRS) Continuity Test <br />On August 7, and 8, 2015, Value Engineering conducted an LCRS continuity test at the Leachate Pond (West) <br />at Forward Landfill in Manteca, California. Attached with this letter are the results of the test. The test <br />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 staffwas 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 />n <br />