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� v 0 A S S O C I A T E S I N C hazardous manifest to Forward Landfill in Stockton, California for disposal Copies of manifests are contained in Appendix E ' ATC personnel installed the subsurface piping and wellhead connections between the vapor wells and air sparge wells and the remediation compound Each vapor wellhead connection includes a ' gate valve, vacuum gauge, sampling port, and flowrate measurement port Each air sparge wellhead connection includes a gate valve, pressure gauge, and flowrate measurement port After all the subsurface piping had been installed ATC pressure tested the lines by generating a vacuum in each line with an air compressor and making sure each line sustained the vacuum for at least 15 minutes After pressure testing the lines, the trenches were backfilled with Class 11 aggregate base material to approximately 4 inches below grade by LTI The aggregate was compacted and the trench ' locations were resurfaced with asphalt to match the pre-existing site conditions 5.2 Remediation Compound and Air Sparge and Vapor Extraction E ui ment The fenced remediation compound was constructed the week of April 25, 2002 b Cal-Fence Inc at p Y the location shown on Figure 3 The fence posts were installed in concrete with a six-foot high chain link fence and three strands of barbed wire on top The remediation compound includes a 10- foot wide swing gate ' In June 2002, the San Joaquin Valley Air Pollution Control District (SJVAPCD) issued an Authority to Construct for the installation and operation of the thermal oxidizer that is part of the ' vapor extraction system The SJVAPCD permit number is N-4689-1-0 In June 2002, Pacific Gas & Electric (PG&E) Company provided access to the on-site transformer and installed a separate electrical meter for the remediation system Green Electric installed the subsurface electrical connections from the transformer to the remediation compound and also installed two function boxes inside the remediation compound to provide access for the air sparge ' and vapor extraction equipment During the week of October 14, 2002, Kamps Propane installed a 500-gallon propane aboveground ' storage tank (AST) to provide supplemental fuel for the thermal oxidizer Kamps also installed the necessary hoses, pipes, and gauges to transfer the propane to the thermal oxidizer The AST is located inside the fenced remediation compound at the location shown on Figure 3 ' Duringthe week of October 14 2002 Frontier Environmental Systems installed the thermal ' oxidizer unit and made the necessary connections to the electrical service and vapor extraction lines The vapor extraction system was initiated on October 17, 2002 SCVAPCD personnel were present for the system startup and observed the initial sampling of the vapor extraction system The vapor extraction system was turned off on October 18, 2002 due to Iarge quantities of extracted w lwordpro1625961reportshrp doc 5