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WICKLAND OIL COMPANY -3- 18 August 1988 <br /> completion of this report should be submitted <br /> by 23 September 1988. <br /> 2) Regal Station #503 <br /> Delta Environmental Consultants, Inc. drilled <br /> two soil borings along the northern boundary <br /> of the site property, approximately 85 and 95 <br /> feet from the underground tanks. The borings <br /> extended to 25 feet. No ground water was <br /> encountered. Delta Engineering reported that <br /> strong petroleum odors were emanating from <br /> the tank backfill area during tank repairs <br /> conducted at this site. Also, a report by <br /> Harding-Lawson Associates showed that three <br /> of the five monitoring wells located within <br /> the tank backfill area contain floating <br /> product. The depth to ground water at this <br /> site is unknown, but is assumed, by Delta <br /> Engineering, to be less than 30 feet from the <br /> surface. <br /> Due to the presence of water and product in <br /> the backfill and the shallow depth to ground <br /> water it is possible that soil and ground <br /> water contamination have occurred outside the <br /> backfill. Please submit a Soil Contamination <br /> Workplan (Appendix A, page A-4) to both the <br /> Yolo County Department of Environmental <br /> Health Services and this Regional Board by <br /> 30 September 1988. <br /> 3) Regal Station #510 <br /> The Site Environmental Investigation report <br /> prepared by Delta Environmental Consultants <br /> (16 June 1988) and excerpts from an undated <br /> Harding-Lawson Associates report show the <br /> presence of free product on the ground water <br /> and high levels of dissolved contaminaticn at <br /> this site. To assess the extent of <br /> contamination, Wickland Cil Company is <br /> requested to submit a Preliminary Report <br /> (Appendix A, page A-8) by 19 September 1988. <br /> Included in the report should be a time <br /> schedule for completing a Problem Assessment <br /> Report (Appendix A, page A-9) by 5 December <br /> 1988. Submit these reports to both Mr. Kevin <br /> Dickson of the Roseville Fire Department and <br /> this Regional Board. <br />