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RECEIVE ® - <br /> SEP 2 0 2013 <br /> srR,ar�s <br /> ENVIRONMENTAL, INC . ENVIRONMENTAL HEALTH 3330 Cameron Park Drive, Ste 550 <br /> PERMITlSEFMCES Cameron Park, California 95682 <br /> (530) 676-6004 - Fax (530) 676-6005 <br /> September 18 , 2013 <br /> Project No . 2154- 1817-01 <br /> City of Stockton <br /> Municipal Utilities Department <br /> Attn: Michelle Price <br /> 2500 Navy Drive <br /> Stockton, CA 95206 <br /> Re: Application to Discharge Extracted Groundwater to the Sanitary Sewer <br /> Barnes Trucking, 1817 South Fresno Avenue, Stockton, California <br /> Dear Ms. Price: <br /> Stratus Environmental, Inc. (Stratus) has prepared this letter, on behalf of Mr. Floyd <br /> Barnes, to request a permit for a short duration (less than 30-days), continuous discharge <br /> of treated groundwater to the sanitary sewer at the Barnes Trucking facility located at <br /> 1817 South Fresno Avenue, Stockton, California (Figure 1 ) . A completed permit <br /> application is included in Appendix A. <br /> Groundwater beneath the site is impacted with petroleum hydrocarbons. To mitigate the <br /> petroleum hydrocarbon impact to groundwater, Stratus previously conducted a 5-day <br /> uuaYphase extrac it on(DPE)piloottes between April 29 and May 3,23 . n e ectronic <br /> correspondence with San Joaquin County Environmental Health Department (EHD), <br /> Stratus recommended an additional short-term 30-day pilot test to further reduce the fuel <br /> contaminants remaining beneath the site. EHD approved implementation of the 30-day <br /> DPE pilot test in a letter dated September 4, 2013 . However, EHD requires weekly <br /> reporting to monitor the contaminant mass extraction rate; if the contaminant mass <br /> extraction rate does not improve significantly beyond that obtained during the 5-day pilot <br /> test, EHD requests the pilot test to be terminated prior to the 30-days. <br /> Stratus proposes to install a DPE system that will extract both soil vapors and <br /> groundwater from a network of wells using a 20-horsepower (hp) liquid ring <br /> pump/blower rated for 300 cubic feet per minute (cfin) air flow. The remediation system <br /> will operate 24 hours a day, for a maximum of 30 days. Soil vapors will be abated in the <br /> thermal oxidizer prior to discharge to the atmosphere, and the extracted groundwater will <br /> be treated using two 1 ,000-pound (lb) granular activated carbon (GAC) units, in series, <br /> prior to discharge to the sanitary sewer. Pertinent site features and proposed locations for <br /> the DPE system and sewer discharge are presented in Figure 2. A process flow and <br /> instrumentation diagram is presented in Figure 3 . <br /> KALI Trucking\Correspondence\Bames Wastewater discharge permit app Sept 2013.doe <br />