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i <br /> DEPTH TO GROUNDWATER- <br /> Based upon published data, the highest water level in the last 10 <br /> years was measured at about 271 bgl . The water table has varied <br /> from 531 bgl in October, 1994, to 37 . 58 ' bgl in July, 1996 The <br /> last sampling event in November, 1996 measured groundwater at an <br /> average depth of 40 441 bgl . <br /> SUMMARY OF PRIOR WORK & PERTINENT DATES : <br /> April, 1987 - 3 UST' s were removed from the property. Minor <br /> contamination was found beneath the waste oil tank <br /> June, 1987 - Site of removed waste oil tank was deepened to about <br /> 8 1/21 and a sample taken. Lab analysis revealed gasoline & <br /> motor oil . <br /> August, 1987 - Waste oil tank site reentered & deepened to 13 . 5 ' <br /> under dtrectxon of the EHD. A soil sample taken at that depth <br /> was analyzed for benzene, toluene, xylene, & TRPH. Motor oil was <br /> measured at 3100 mg/kg; all others were below detection limits <br /> October, 1989 - Site was reentered & soil sample taken at approx- <br /> imately 23 ' below grade . Laboratory analysis showed that oil, as <br /> motor oil, was present at 280 mg/kg. This work was not witnessed <br /> by the County EHD <br /> October 27 & 28 , 1993 - Four (4) soil borings were placed on the <br /> site. For details of that work, refer to the WJH January, 1994 <br /> report titled "PROBLEM ASSESSMENT REPORT COVERING SOIL <br /> CONTAMINATION INVESTIGATION" . <br /> September 30, 1994 - One (1) 211 diameter monitoring well was <br /> placed on the property; details are covered in the report <br /> prepared by WJH titled "INTERIM REPORT AND RESULTS OF GROUNDWATER <br /> INVESTIGATION" , dated October 31, 1994 <br /> June 1 & 2 , 1995 - Two (2) 211 monitoring wells were installed on <br /> the site. Refer to the WJH report titled "INTERIM REPORT AND <br /> RESULTS OF GROUNDWATER INVESTIGATION" dated August, 1995 for <br /> details . <br /> June, 1996 - Three (3) additional monitoring wells were placed on <br /> the property; the results of that work is detailed in th WJH <br /> report titled "INTERIM REPORT AND RESULTS OF SOIL & GROUNDWATER <br /> INVESTIGATION, 11 dated August 14, 1996 . The locations of the soil <br /> botings and monitoring wells placed on the property are shown on <br /> 2 <br />