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USA PETROLEUM -2- 1 September 1988 <br /> contamination, USA Petroleum Corp. is requested to <br /> submit a Preliminary Report by 30 September 1988 . <br /> Included in the report is to be a time schedule <br /> for completing a Problem Assessment Report by 30 <br /> December 1988. <br /> 2) USA Station #110 <br /> The "Installation of Two Ground Water Monitoring <br /> Wells" report prepared by Applied GeoSystems (7 <br /> October 1987) shows ground water contamination at <br /> this site (an excess of two feet of free product <br /> in monitoring well S-2 adjacent to the tanks and <br /> sheens in the other two monitoring wells) . Ground <br /> water gradients at the site may be affected by the <br /> number of domestic wells within a 2000 foot radius <br /> of the site. USA Petroleum is to contact the <br /> County Heath District concerning the need to <br /> monitor domestic wells on a regular basis. Please <br /> submit a Preliminary Report for this facility by <br /> 26 September 1988. In the report include a time <br /> schedule for completing a Problem Assessment <br /> Report by 12 December 1988. <br /> I have enclosed copies of the Tri-Regional Board Sampling <br /> Guidelines and Region 5 's Appendix A Reporting Requirements. All <br /> future reports are to follow the formats set forth in these <br /> guidelines. Reports are to be submitted to both Ms. Laurie <br /> Cotulla of the San Joaquin County Health District and this <br /> office. If you have any questions, please call me at (916) 361- <br /> 5721. <br /> Lirr.a-.— <br /> BRIAN NEWMAN <br /> WRC. ENGINEER <br /> BCN:bcn <br /> cc: Ms. Laurie Cotulla, San Joaquin County Health District, <br /> Stockton <br />