ARCHIVED REPORTS XR0010707 - Laserfiche WebLink

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• Introduction This site has been operational since January 26, 1990 On November 14, 1989 three underground gasoline tanks were removed Soil samples of the dirt around the tank pit were found to be contaminated with gasoline The contaminated water was found to be flowing to the northeast The contaminated plume has moved to the northeast Wells have been drilled over the property and northeast and east of the property The most easterly well is BM-11 which is located on Aurora Street one block east of Grant Street One well BM-9 was placed east of the neighboring gas station Three bonngs were placed on the property and two hydropunch bonngs were placed on the Sun Gardens property to the west of this site SITE HISTORY On November 14, 1989 three tanks were removed at this site and three fiberglass tanks were installed The laboratory results taken at the time of removal tested positive for gasoline hydrocarbon contamination On December 19, 1989 an Electromagnetic Induction Survey was conducted on the site to aid the investigation of the aerial extent of the contaminated sod and in planning the position of the monitoring wells . In January 1990 three monitoring wells (BM-1, BM-2 and BM-3) were installed They were reported in our report dated February 9, 1990 i In March and April 1992, three more monitoring wells (BM-4, BM-5 and BM-6) were installed They were necessary because the groundwater had fallen below the depth of the original wells This work was reported in our report dated April 30, 1992 In July 1993 we installed two additional monitoring wells (BM-7 and BM-8) and dnlled one boring (B-1) This work was reported in our report dated August 24, 1993 In September 1994, we installed three additional monitoring wells (BM-9, BM-10 and BM-11) This work was reported in our report dated October 10, 1994 On June 19, 1995 we drilled two hydropunch borings (HP-1 and HP-2) they were reported in our Activity Report dated June 30, 1995 In February and March, 1996 five vapor extraction wells, one air sparging well and one boring were installed at this site This work was reported in our report dated March 19, 1996 In April 1996 we drilled two additional CPT borings (HP-3 and HP-5) They were reported in our report dated June 10, 1996 In July 1999, we drilled an additional monitoring well (BM-12) and a vapor bonng to 80 feet, which was completed for a vapor extraction well, (VW-7) They were reported in our report dated August 5, 1999