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SOO DEPTH TO GROUNDWATER: Based upon the most recent sampling event, (July1,) groundwater is about 32' bgl. That is the highest level measured since monitoring began in October, 1992. PRIOR USE OF PROPERTY: The site had been used as a mini-mart and gasoline station for many years. It was taken out of service sometime in 1991 REVIEW OF PRIOR WORK DONE: Decenler, 1991 -Two (2) 5,000 gallon and one (1) 2,000 gallon UST's were removed from the property, along with a 500 gallon waste oil tank, dispenser pumps and product lines. March, 1992 - Earth Systems Environmental placed seven (7) soil borings on the property in an attempt to determine the extent of contamination discovered during tank removal operations. Refer to their report dated May 6, 1992 for details of that work. Septsmber, 1992 -The above company placed three (2) 2" groundwater monitoring wells on the property. The total depth of each well was 65', with the top of the well screens at 45' bgl. Refer to their report dated November 6, 1992 for more complete details of that work. March, April, & May, 1993 -The site of the removed UST's, product lines, and pump island were overexcavated by Jim Thorpe Oil, Inc., under the direction of Wm. J. Hunter, RG. A total of 750 cubic yards of contaminated soil was removed from the property, and the excavations filled with clean material. Details of that work are covered in the Wm. J. Hunter&Associates report dated June 30, 1993. WORKPLAN FOR PLACING TWO 2" GROUNDWATER MONITORING WELLS: The approximate location of the two wells is shown on PLATE !1111. Prior to mobilizing drilling equipment, an encroachment and revocable permit will be obtained from the City of Stockton for MW-4, which is proposed to be located in the area between the sidewalk and Grant Street. MW-5 is proposed to be 2