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y <br /> 31 January 2000 <br /> AGE-NC Project No 97-0290 <br /> Page 10 of 10 <br /> 44 PERMITTING <br /> An application for a site specific permit will be submitted to the San Joaquin Valley Air Pollution <br /> Control District (SJVAPCD) prior to initiation of the remediation project In addition, proper <br /> building permits will be obtained from the City of Lodi Building Department for necessary <br /> construction work, including natural gas and electrical source installations <br /> All necessary well/boring permits will be submitted to the PHS-EHD prior to any drilling activities <br /> A minimum of 48 hours notice will be given to the PHS-EHD prior to performing any field work <br /> 45 SOIL VAPOR EXTRACTION/IN-SITU AIR SPARGING SYSTEM MAINTENANCE <br /> The SVE/IAS system will be maintained on a weekly basis, according to manufacturers <br /> recommendations After stabilization, routine maintenance would represent the only periods of <br /> "down time" for the unit One to two times each month (assuming 24-hour operation), the unit will <br /> be shut down for routine maintenance procedures such as lubrication, oil changing, and system <br /> adjustments <br /> 46 PROGRESS/CONFIRMATION SOIL SAMPLING <br /> After approximately eight months of operation or efficiency of the unit has declined, soil samples <br /> will be collected from the"core"petroleum hydrocarbon impacted area at the site Analytical results <br /> of the soil samples will serve to approximate remaining petroleum hydrocarbon levels and determine <br /> if continuing remedial operation is necessary <br /> Samples will be collected utilizing a direct push technology AGE proposes to advance soil probe <br /> borings in the "core"petroleum hydrocarbon impacted area at the site to depths of approximately <br /> 55 feet bsg Probe borings will be advanced using a Geoprobe 5400 soil probing unit <br /> Discrete soil samples will be collected at five-foot intervals beginning at a depth of 15 feet bsg <br /> utilizing a Geoprobe soil sampling assembly loaded with pre-cleaned 1 125-mch by 6-inch brass <br /> sleeves Soil samples will be preserved by covering both ends of the second brass sleeve with Teflon <br /> sheets,plastic end caps and sealed with tape Each sample sleeve will be labeled with the following <br /> information soil probe boring location, depth, date and time Soil samples will be transported in a <br /> cooler under ice to a DHS-certified laboratory for analysis of TPH-g, TPH-d, BTEX and MTBE in <br /> accordance with EPA methods 8015m and 8020 <br /> Advanced CcoEnvironmental,Inc <br />