SITE INFORMATION AND CORRESPONDENCE

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r NorCal Beverage Company July 1, 1993 Page 2 have been successful in removing most, if not all, of the petroleum contaminants. This most certainly eliminates the potential threat it once posed, and satisfies one of the requirements stated in Ms. Thayer's 20 July 1992 evaluation letter. However, soil was excavated to a maximum depth of 24.7 feet below surface, only 15. 3 feet above the 1986 groundwater measurement. The requirement for a groundwater investigation is consistent with the Regional Water Board's "Staff Recommendation for Preliminary Evaluation and Investigation of Underground Tank Sites" dated 10 August 1990 (refer to Case III. 1. Seasonal High ground water less than 50 feet) . On September 6, 1991, PHS/EHD received a NCBC letter describing details of two additional monitoring wells, 2 soil borings, and probable vapor extraction wells that were to be proposed within a workplan. This proposal was never carried out. PHS/EHD received a telefax communication from NCBC detailing an abbreviated approach to the site's groundwater investigation by only drilling soil borings and collecting a groundwater sample from the existing monitoring well. In a November 30, 1992 telephone conference call between Russell Juncal of Resna, Pat Riddle, Attorney at Law, and Diane Hinson of PHS/EHD, discussion again focused on the need to proceed with a complete groundwater assessment investigation. An agreement during that telephone conversation was reached for the preparation of a workplan for additional monitoring wells and a soil investigation to evaluate a risk assessment approach to the contaminated soil. Instead, PHS/EHD received an April 16, 1993 workplan for an additional overexcavation attempt for the removal of the remaining contaminated soil. The workplan did not indicate that closure would be sought at the conclusion of the field activities. NCBC has requested a meeting to discuss the June 3 , 1993 Resna report and the request for site closure. The meeting has been scheduled for Thursday, July 1, 1993 at 2 :00 p.m. in the offices of PHS/EHD. PHS/EHD has agreed to the meeting with NCBC, NCBC's attorney, and consultant; however, no decision contrary to the directives of this letter will be made at the July 1, 1993 meeting. PHS/EHD will accept new evidence presented at the meeting and you will be notified following PHS/EHD's evaluation of new evidence presented.