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James L. Tjosvold, P.E. <br /> Page 2 <br /> April 29, 1996 <br /> significant amount of time and effort 1) conducting an insitu solidification treatability study for <br /> the technology recommended in the draft Soil OUFS and 2) modeling to evaluate the impact to <br /> groundwater after soil source area treatment, with the intention of selecting the most cost- <br /> effective soil treatment option that would be protective of groundwater at the site. PG&E <br /> undertook these efforts in good faith based on comments and direction from the agencies at <br /> our meeting on November 30, 1995, and with an understanding that DTSC and RWQCB <br /> accepted a source area approach to soil treatment. Yet the soil goals submitted by the <br /> RWQCB in the letter of April 18, 1996 do not appear to be compatible with a source area <br /> approach. <br /> PG&E proposes to meet with the agencies as soon as practible to agree on the groundwater <br /> objectives and goals for the Stockton Former Manufactured Gas Plant Site. After PG&E has <br /> received confimation of an agreement with the agencies in writing, a revised schedule will be <br /> submitted to you. The schedule will include submittal of revised Sections 4 and 5 as well as a <br /> presentation of the final recommended soil treatment alternative prior to submittal of the final <br /> Soil OUFS. <br /> Please call me at (415) 973-6254 if you have any questions or require additional information. <br /> Sincerely, <br /> 4ge �. <br /> Patricia Sullivan <br /> Stockton Manufactured Gas Plant Site Project Manager <br /> cc: Mr. William H. Crooks, Executive Officer <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> Attention: Ms. Wendy Cohen <br /> 3443 Routier Road, Suite A <br /> Sacramento, CA 95827-3098 <br /> Mr. Ron Valinoti,Director <br /> San Joaquin County Public Health Services <br /> Attention: Ms. Linda Turkatte <br /> P.O. Box 388 <br /> Stockton, CA 95201-0388 <br />