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L & M OPERABLE UNIT-THIRD QUARTER 2014 SITE STATUS, REMEDIAL SUMMARY, <br /> AND GROUNDWATER MONITORING REPORT <br /> Status of Remediation Activities <br /> October 31, 2014 <br /> 7 ft. skid. The holding tank is additionally coupled to two 55-gallon carbon drums <br /> connected in series. The product holding tank is supplied by a 5 hp Powerex model <br /> SES0508HP 4-2 rotary scroll air compressor and a 13 gallon receiving tank. The <br /> compressor is tied to a 2-inch SPG2 AutoGenieTM skimmer bladder pump installed in <br /> MW-50 and capable of removing up to 160 gallons of SPH per day. Compressed air is <br /> supplied to the pump via independent piping and regulated by a QED Environmental <br /> Systems pressure regulator mounted inside the remediation enclosure. In addition to <br /> the active skimmer in MW-50, four passive skimmers are installed in wells MW-43, MW-47, <br /> MW-48, and MW-49. <br /> A Notice of Permit Exemption was obtained from the SJVAPCD on January 16, 2013. <br /> The product recovery system was started on September 11, 2013. A system startup <br /> report detailing the startup, operation and maintenance, and recovery status of the <br /> free product removal system was submitted on February 13, 2014. <br /> 3.4.2 Product Recovery Remediation Systems Operational Data <br /> During 3Q14 (June 30, 2014 through September 30, 2014) the system was 100% <br /> operational removing approximately 8.8 gallons of SPH from the subsurface. Since <br /> startup the product recovery remediation system has removed approximately 615 <br /> gallons of SPH from the subsurface. Product removal skimmer system operational data <br /> can be found in Table 24. <br /> During evaluation of the third quarter 2014 product recovery remediation system data, <br /> Stantec noticed an error in the calculation than was used to estimate the cumulative <br /> amount of product recovered by the product recovery system that had been <br /> unaddressed in previous quarterly reports. The issue has been addressed and is <br /> reflected in the quantity reported above and has been adjusted in Table 24. <br /> 3.5 CONCLUSIONS <br /> All onsite remediation systems (DPE, L&M OU SVE, and ASVE) are currently shutdown. <br /> On May 30, 2014, Sfantec submitted a proposal to the RWQCB-CVR to remove the <br /> existing remediation equipment, while leaving system piping, manifolds, and other <br /> infrastructure intact to allow for response with an alternate remediation unit if <br /> necessary. Removal of the remediation equipment is currently pending approval from <br /> the RWQCB-CVR. The offsite skimmer system will remain operational during 4Q14. <br /> 5ta ntec 3.4 <br />