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0 • <br /> California Regional Water Quality Control Board ,- <br /> Central Valley Region <br /> Winston H.Hickox Robert Schneider,Chair <br /> n <br /> Secretaryfor Sacramento Main Office <br /> Environmental Internet Address: http://www.swrcb.ca.gov/—mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 AUG 2 2 2002 <br /> Phone(916)255-3000•FAX(916)255-3164 _ <br /> ENVIRONMENT HEALTH <br /> 21 August 2002 PERMIT/SERVICES <br /> Ms. Linda M. Gonsalves (l o� �g <br /> Pacific Gas and Electric Company <br /> California Gas Transmission <br /> 375 North Wiget Lane, Suite 200 <br /> Walnut Creek, California 94598-2412 E <br /> APPROVAL OF REQUEST FOR NO FURTHER ACTION, PACIFIC GAS AND 7. ?0 <br /> ELECTRIC, VERNALISDEHYDRATOR STATION, SAN JOAQUIN COUNTY ZD SZt <br /> We have reviewed your 28 May 2002 Request for No Further Action at the PG&E Vernalis 4 <br /> Dehydrator Station,which is on Durham Ferry Road about 2.7 miles east of Highway 33 in San T <br /> Joaquin County. We have also reviewed the 28 July 2002 Confirmation Sampling Report <br /> Vernalis Dehydrator Station (Confirmation Report) submitted by Pacific Gas and Electric <br /> Company(PG&E). The Vernalis Dehydrator Station(site) is an inactive PG&E facility that was <br /> part of its natural gas gathering system. The Confirmation Report contains soil and groundwater <br /> results for the December 2001 investigation that verify the results of the initial investigation <br /> conducted in March 1997. <br /> A total of 15 soil samples and 6 groundwater samples were collected and analyzed for total <br /> petroleum hydrocarbons (TPH) as gasoline, TPH as diesel, TPH as motor oil,benzene,toluene, <br /> ethylbenzene and xylenes. TPH as diesel was detected in a single groundwater sample at 120 µg/1 <br /> and in a single soil sample at 29 mg/kg. All other pollutants were below their respective <br /> detection limits. This concentration is just above the water quality objectives for taste and odor <br /> and the suggested no-adverse response level,both set at 100 µg/1. This is a natural gas facility, <br /> so TPH as diesel results are not from refined fuel. This low concentration of pollution is of <br /> limited extent and is expected to naturally attenuate, so it does not pose a significant threat to <br /> water quality. Based on the above information,no further action is required at this site. <br /> Nothing in this determination shall constitute or be construed as a satisfaction or release from <br /> liability for any conditions or claims arising as a result of past, current, or future operations at this <br /> location. Nothing in this determination is intended or shall be construed to limit the rights of any <br /> parties with respect to claims arising out of or relating to deposit or disposal at any other location of <br /> substances removed from the site. _ / , <br /> California Environmental Protection Agency <br /> 0 Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of <br /> simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.m.gov/mgcb5 <br />