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ENVIROW, ENTAL HEALTW0EPARTMENT <br /> SANJOAQUIN COUNTY <br /> Unit Supervisors <br /> ��--� Donna K. Hector R.E.H.S. <br /> r � Z� 304 East Weber Avenue, Third Floor earl I3or man, R.E.xs . <br /> Director g <br /> Lam. Laurie A. Cotulla, R.E.H.S. Stockton, California 95202-2708 Mike Huggins, ikon, S ., R.D.I. <br /> sP • Program Manager Telephone: (209) 468-3420 Douglas W. Wilson, R.E H.S. <br /> Margaret Lagorio, R.E.H.S. <br /> 9Ci FO as P <br /> Fax: (209) 464-0138 Robert McClellon, R.E.H.S. <br /> Website: www.sigov.org/ehd/ Jeff Carruesco, R.E.H.S. <br /> JAMES MILLS APR 0 9 20M <br /> WESTREC MARINAS <br /> 14900 W HIGHWAY 12 <br /> LODI CA 95242 <br /> RE : King Island Resort-UST Investigation Site Code: 1557 <br /> 11530 W . Eight Mile Rd , RO#: 309 <br /> Stockton , CA 95219 SWRCB-CUF#:003668 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed <br /> Corrective Action Plan (CAP) dated February 28, 2006 as submitted by your <br /> consultant ATC Associates Inc and has the following comments. <br /> The CAP is in response to EHD requirements to remove the threat to the drinking <br /> water well at the above referenced site by reducing the ground water contamination <br /> associated with the underground storage tank (UST) release. <br /> The CAP included an evaluation of remedial alternatives and concluded that a <br /> combination of insitu ozone/air sparging (O-IAS) and soil vapor extraction (SVE) <br /> would be feasible for remediating the site. In addition to O-IAS and SVE, the CAP <br /> i included utilization of Accelerated Remediation Technologies' (ART). ART <br /> procedures include installation of two remediation wells on site that would be <br /> designed to include an internal pump, and air sparing device, and an air-stripping <br /> device within the well casing . <br /> Site-specific conditions limit alternatives for successful and cost-effective remedial <br /> actions at this site. Additional information must be provided before a CAP can be <br /> approved . <br /> Site specific characteristics, such as sorbed and dissolved contaminant mass <br /> estimates, interaction of the natural organic material (NOM) , soil oxygen demand <br /> characteristics, and contact potential between ozone and contaminants must be <br /> used to justify selection of ozone injection as the most suitable remediation <br /> technology for this site. <br /> Septic systems are used to dispose of waste water at this site so there is a potential <br /> for high biological activity and competition for oxygen use. This issue must be <br /> evaluated before ozone use can be approved . <br />