Laserfiche WebLink
Date November 30, 2000 <br />. ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 02186 Address 3212 North California Street, Stockton, California <br /> ARCO Environmental Engineer Paul Su le <br /> Consulting Co/Contact Person Delta Environmental Consultants, Inc /Jay R Johnson <br /> Consultant Project No D000-330-1 <br /> Primary Agency/Regulatory ID No Carol Oz, San Joaquin Count PHS/EHD <br /> WORK PERFORMED THIS QUARTER (Third 2000) <br /> 1 Groundwater samples were collected and submitted for laboratory analysis from monitoring wells <br /> MW-1 through MW-4 Analysis included oxygenates and additional compounds by USEPA Method <br /> 8260 <br /> 2 Delta compiled and evaluated the groundwater-monitoring data <br /> 3 A soil vapor extraction (SVE) test was conducted on September 18 and 19, 2000 <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth 2000) <br /> 1 Depth-to-water measurements will be collected from the monitoring wells and shallow extraction <br /> wells on a monthly basis <br /> 2 Data collected during the SVE test will he compiled and submitted to the appropriate agencies <br /> 3 Delta will continue to perform quarterly groundwater monitoring The next sampling event is <br /> tentatively scheduled for December 2000 Groundwater samples from monitoring wells MW-1 <br /> through MW-4 and vapor extraction wells VW-1 through VW-3 (shallow vapor wells) will be <br /> collected and analyzed for total petroleum hydrocarbons as gasoline (TPHG) using U S <br /> Environmental Protection Agency (USEPA) Method 8015 Modified, for benzene, toluene, <br /> ethylbenzene, and total xylenes (BTEX), using USEPA Method 8020, and for oxygenates tertiary <br /> butyl alcohol (TBA), methyl tertiary butyl ether (MTBE), di-isopropyl ether (DIPE), ethyl tertiary butyl <br /> ether(ETBE), tertiary amyl methyl ether (TAME), and 1,2-Dichloroethene (1,2-DCA), using USEPA <br /> Method 8260 <br /> Current Phase of Protect Monitoring - <br /> Frequency of Groundwater Sampling MW-1 through MW-4 and shallow vapor wells <br /> VW-1 through VW-3 = Quarter/ <br /> Frequency of Groundwater Monitoring Quarterly <br /> Sample Date September 27, 2000 <br /> Is Free Product(FP) Present on Site No <br /> FP Recovered this Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Approximate Depth to Groundwater _ 25 52 to 25 97 feet bgs <br /> Direction of Groundwater Flow East-Northeast <br /> Groundwater Gradient 0 043 ftlft <br /> PAVILION1MyDocuments\ARCO\21861QTRLY1200012186Q300 Delta <br /> 11/30/00 <br />