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6 � � <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN CULL\ <br /> N: a <br /> (OGI KHANNA 1\11).M P.R I � <br /> Health Offices. <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • Stockton, California 95201 <br /> (209) 468.3400 <br /> JOHN DIECKMAN EXECUTOR ®CT 1 g egg <br /> (OF)y <br /> MD AND MRN TRUSTS <br /> 500 AIRPORT BLVD STE 200 <br /> BURLINGAME CA 94010 <br /> RE: System 99 IN REPLY REFER TO SITE CODE: 1275 <br /> 601 S. Ventura <br /> Stockton, CA <br /> You were directed to submit by August 30, 1992, a work plan for <br /> continued groundwater investigation (see attached) . The continued <br /> investigation is necessary to define the groundwater contamination. <br /> Furthermore; a complete Preliminary kssessment Report (PAR) was <br /> requested by September 30, 1991. Neither request was submitted. <br /> The PAR prepared by RESNA/WaterWork dated November 29, 1990, is <br /> incomplete. The PAR failed to propose remedial alternatives. The <br /> PAR also failed to address how the extent of groundwater <br /> contamination was to be defined. The investigation is necessary to <br /> define groundwater contamination. <br /> San Joaquin County Public Health Se vices, Environmental Health <br /> Division (PHS/EHD) has received and reviewed the RESNA/WaterWork <br /> letter dated September 6, 1991 and our comments follow. <br /> Monitoring well MW-1, downgradient of the former underground <br /> storage tank pit, is significantly contaminated with 3 . 2 parts per <br /> billion (ppb) benzene and 1, 100 ppb total petroleum hydrocarbon- <br /> gas. <br /> During the August 9, 1991, site visit, our PHS/EHD representative, <br /> Mary Meays, observed RESNA/WaterWork representative, Alex Flores, <br /> disposing purged groundwater directly to the ground. The Central <br /> Valley Regional Water Quality Control Board (CVRWQCB) requires <br /> waste discharge permits for the disposal of untreated contaminated <br /> groundwater. Discontinue this unauthorized activity. <br /> An enclosed copy of the "Tri-Regional Board Staff Recommendations <br /> for Preliminary Investigation ad Evaluation of Underground Tank <br /> Sites" outlines recommended minimum g idelines for report content <br /> and format. Adherence to these guidelines ensures both expeditious <br /> evaluations and consistent field investigations. <br /> A complete PAR must include proposed remedial alternatives once the <br /> contamination problem has been adequately defined. Remedial <br /> alternatives are discussed in the enclosed guidance document. <br /> A Division of San Joaquin Counn•Health Care semices <br /> l <br />