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• WORK PERFORMED THIS QUARTER(Fourth 2005)
<br /> 1 Stratus monitored all vapor extraction and monitoring wells for the presence of water and free
<br /> product on December 19, 2005 Groundwater samples were collected from wells MW-2, MW-4,
<br /> MW-8, MW-10, MW-12, MW-13, VW-3, VW-5, VW-6, and the domestic well Well MW-15 had free
<br /> product and was not sampled Wells MW-1, VW-1, and VW-4 had a product sheen and were not
<br /> sampled
<br /> 2 Stratus conducted six site visits to conduct routine operation and maintenance, and to collect the
<br /> required discharge compliance air samples from the SVE system Free product, if measured, was
<br /> also manually bailed during these site visits
<br /> 3 Stratus bailed approximately 2 gallons of product/water mixture from MW-1, approximately 2 gallons
<br /> from well MW-4, approximately 8 gallons from well MW-15, approximately 2 gallons from well
<br /> VW-1, and approximately 2 gallons from well VW-4
<br /> 4 Stratus compiled and evaluated the monitoring and sampling data
<br /> 5 Between December 12 and December 16, 2005, Stratus installed off-site groundwater monitoring
<br /> wells MW-16 through MW-20 These wells will be included in the regularly scheduled monitoring
<br /> and sampling events beginning first quarter 2006
<br /> WORK PROPOSED FOR NEXT QUARTER(First 2006)
<br /> 1 Monitoring for the presence of free product in wells MW-1, MW-4, MW-15, VW-1, and VW-4 will be
<br /> conducted periodically, and if present, bail floating product
<br /> S2 Water levels will be measured and samples will be collected from wells MW-2, MW-4, MW-8,
<br /> MW-10, MW-12, MW-13, MW-15 through MW-20, VW-1, and VW-4 A sample will be collected
<br /> from the water supply well
<br /> 3 The next sampling event is tentatively scheduled for March 2006 Groundwater samples will be
<br /> analyzed for gasoline range organics (GRO), benzene, toluene, ethylbenzene, total xylenes (BTEX),
<br /> tertiary butyl alcohol (TBA), methyl tertiary butyl ether (MTBE), di-isopropyl ether (DIPE), ethyl
<br /> tertiary butyl ether (ETRE), tertiary amyl methyl ether (TAME), 1,2-dichloroethane (1,2-DCA),
<br /> 1,2-dibromoethane (EDB), and ethanol using USEPA Method 82606
<br /> 4 Bi-monthly site visits will be conducted to monitor system performance, maintain equipment, and to
<br /> collect compliance samples from the SVE system
<br /> 5 A document of the well installation activities will be submitted to SJCEHD
<br /> Current Phase of Project Monitoring/Remediation
<br /> Frequency of Groundwater Sampling All Monitoring Wells =Quarterly
<br /> Frequency of Groundwater Monitoring Quarterly
<br /> Sampling Date December 19, 2005
<br /> Is Free Product(FP) Present on Site Yes (FP MW-15, and sheen MW-1, MW-4,VW-1, and VW-4)
<br /> FP Recovered This Quarter 16 gallons
<br /> Cumulative FP Recovered to Date 272 gallons
<br /> • Depth to Groundwater(Upper) 39 45 to 66 74 feet below ground surface(bgs)
<br /> K 1Bp-Arco for URS161001Quarterly120051Arco_6100 4Q05 doc 57RATU5
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