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Californiagional Water Quality Con�ol Board <br /> Central Valley Region <br /> Linda S.AdamsArnold <br /> Secremryfor Robert Schneider,Chair Schwarzenegger <br /> Environmental Fresno Branch Office Governor <br /> Prolecrion 1685 E Street,Fresno,California 93706 <br /> (559)445-5116•Fax(559)445-5910 <br /> http://www.waterbDards.ca.gov/centralvalley <br /> 20 November 2006 DECD V ED <br /> W NOV 2 1 2006 <br /> M. Scott Mansholt ENVIRONMENT HEALTH <br /> Chevron Environmental Management Company <br /> 6001 Bollinger Canyon Road <br /> Rm K2066 <br /> San Ramon, California 94583-2324 <br /> REVIEW— VACUUM WELL DESTRUCTION REPORT, ALDEN PARK, TRACY, SAN <br /> JOAQUIN COUNTY <br /> Regional Water Board staff has reviewed the referenced document describing destruction of a <br /> vacuum well associated with a former bio-vent and petroleum extraction system at the Alden <br /> Park Old Valley Pipeline (OVP) site. The report, dated 15 November 2006, was submitted by <br /> Science Applications International Corporation (SAIC) on behalf of Chevron. <br /> The vacuum well, associated building, concrete oil seep vaults, and piping equipment were <br /> installed in the 1980's to extract crude oil from shallow soil at Alden Park. The project was <br /> unsuccessful and eventually terminated in 1994. The building, concrete oil seep vaults, and <br /> associated piping were previously removed in accordance with City of Tracy permits. <br /> Regional Water Board staff approved the workplan to destroy the vacuum well on 31 January <br /> 2006 and amended 21 March 2006. Additionally, a permit for the vacuum well destruction was <br /> obtained from the San Joaquin County Environmental Health Department. <br /> According to the report, Regional Water Board staff concurs the well was properly destroyed <br /> and no further action is needed. If you have any questions or comments, please contact Dean <br /> Hubbard at (559) 445-5179. <br /> P <br /> S ('� za�o&SHELTON R. GC. DEAN HUBBARD <br /> Senior Engineering Geologist Engineering Geologist <br /> P.G. No. 6357 <br /> cc: Michael Infurna, Jr., San Joaquin County EHD, Stockton <br /> Luis Mercado, SAIC, Sacramento <br /> California Environmental Protection Agency <br /> �i Recycled Paper <br />