Laserfiche WebLink
e . . <br /> Mr. Charles B. Kolesar -3- 20 August 1992 <br /> it is not uncommon to find benzene concentrations such as those detected <br /> at ARCO, particularly in wells adjacent to areas with free product. At <br /> one of Chevron' s fuel terminals, the benzene levels in onewell adjacent <br /> to free phase petroleum product range from 5.4 to 20 mg/l . At a site in <br /> Santa Clara, the benzene levels vary from 27 to 40 mg/1 . <br /> 4. We answered your concerns regarding cross-contamination and <br /> unrepresentative samples in our 3 June 1992 letter. <br /> Based on the foregoing, by 10 September 1992 you are required to submit a work <br /> plan for the definition of the vertical extent of soil and ground water <br /> contamination. Failure to submit this work plan by that date may result in an <br /> enforcement action. <br /> Please call Philip Isorena at (916) 361-5650 if you have any questions. <br /> W al ,41 L(��aw <br /> WENDY L. COHEN <br /> Senior Engineer <br /> Enclosure <br /> PSI: ldj <br /> cc: Mr. Harlin Knoll , San Joaquin Local Health Department, San <br /> Joaquin County <br /> Mr. Dan Craig, Harding and Lawson Associates, Novato <br />