Laserfiche WebLink
CHRONOLOGY k <br /> CITY OF STOCKTON VAN BUSKIRK GOLF COURSE i <br /> 1740 HOUSTON AVENUE, STOCKTON, CA 95202 <br /> 04/30/91 A 550-gallon diesel underground storage tank(UST) ID 391146-01 (State ID <br /> 31637002) and 16 feet of piping were removed at the site and transported to <br /> Schnitzer Steel Products (Schnitzer), 12000 Folsom Blvd.,Rancho Cordova,CA <br /> 95670. Bottom of the UST was at approximately 10 feet below surface grade(bsg). <br /> k i <br /> 05/13/91 San Joaquin County Environmental Health Department (EHD) received analytical <br /> results of soil samples collected from the UST removal. AnEalyses indicated the <br /> presence of total petroleum hydrocarbons as diesel and gasoline beneath piping at 4 <br /> feet bsg. <br /> i <br /> 06/26/91 Unauthorized Release Report(UAR) 91-U56 was filed. <br /> 01/12/94 A 1,000-gallon unleaded gasoline/diesel UST ID 39-1146-02 (State ID 31637001) <br /> and 14 feet of piping were removed at the site and transported to Schnitzer. <br /> 01/19/94 Analyses of soil samples indicated the presence of petroleum hydrocarbons. <br /> `I 5 <br /> 01/31/94 Unauthorized Release Report(UAR) 94-U09 was filed. <br /> 02/17/94 EHD directed City of Stockton (COS) to investigate and mitigate the contamination <br /> 06/01/94 Monitoring wells MW-1 to MkV-3 were installed at the site. <br /> �i <br /> 06/06/94 Notice of Reimbursement (NOR) was mailed to COS and site was entered into <br /> Local Oversight Program (LOP). <br /> 1 <br /> 08/29/94 EHD requested an additional monitoring well be installed down gradient of the w <br /> three existing monitoring wells. <br /> 09/16/94 An irrigation well was identified on site located about 2,100 feet east of the location <br /> of the removed USTs. Drinking water is supplied by COS and not this well. <br /> 04/03/95 Limited over-excavation in the area of the former dispenser!and 1,000--gallon UST. <br /> Groundwater was encountered at about 9 feet bsg. Contarriination appeared to <br /> extend below the maintenance building. Work was postponed until a work plan t <br /> addendum to dewater the impacted groundwater and proposal for additional over- t <br /> excavation could be submitted. Groundwater sample was collected for analyses. <br /> Soil samples were not collected. <br /> ,I <br /> 08/29/95 Over-excavation continued. Sidewall soil samples were collected at 14 feet bsg. <br /> Analytical results indicated the extent of the contamination in soil and groundwater <br /> not defined. <br /> 12/18/96 7 soil borings SB-1 to SB-7 were advanced to approximately 16 feet bsg. Analyses <br /> of soil samples indicated low level of petroleum hydrocarbons remaining in the soil. <br /> The extent of the groundwater plume has not been defined' <br /> 10/06/98 Results of the analyses of the 3 discrete soil samples collected from the over- <br /> excavation stockpile (approximately 119 yards)were non-detect for petroleum <br /> hydrocarbon constituents except low level of xylenes. EHD agreed the stockpile <br /> could be spread or reused for landscaping on site. <br />