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' � 1 <br /> IP <br /> Frank C. Alegre Trucking Company, Inc. 4203-F3 <br /> Former Trucking Facility f June 9, 1997 <br /> GROUND-WATER MONITORING WELL INSTALLATION Revised July 23, 1997 <br /> ii <br /> Page 3 <br /> Ground-Water Sampling j! <br /> I� <br /> ' Approximately 48 hours after development, four to five well-casing volumes of water were <br /> removed using a submersible electric pump. During purging,li�temperature, pH and dissolved solids <br /> were monitored until they stabilized(±10 percent). The water samples were collected using a clean <br /> disposable polyethylene bailer. The ground-water samplesl�were collected in appropriate sized <br /> precleaned laboratory containers. Samples for volatile organic analyses were recovered in <br /> 40-milliliter vials lined with a Teflon septum. The volatile organic samples were recovered with } <br /> zero headspace to prevent the loss of volatile constituents. ! I <br /> Laboratory Testing <br /> The soil and ground water samples were analyzed for total extractable hydrocarbons as <br /> diesel/motor oil (EPA mod 8015) and volatile organics (EPA 8260). No detectable petroleum <br /> hydrocarbons or volatile organics were reported for the three soil samples. Trace concentrations of <br /> gasoline and diesel were reported for the ground-water sample at levels of 80 arts per billion b <br /> g P �' P 14 P P CPP ) <br /> and 70 ppb respectively. No VOC's were reported for the water sample. The laboratory test report <br /> is provided as an attachment. <br /> We are pleased to be of continued service to you regarding this project. If you have any questions <br /> regarding the scope or findings of this study, please do not Hesitate to contact our office. At your <br /> request, a copy of this report has been forwarded to Ms. Margaret Lagorio with the San Joaquin <br /> Environmental Health Department. <br /> f � <br /> Ii <br /> e � <br /> Very truly yours, ' <br /> 6 E <br /> ENGEO INCORPORATED Reviewed by: 4 <br /> Shawn Munger y� Brian Flaherty <br /> CHG 413 I Vice President <br /> CEG 12,56 <br /> sm/lb:wm <br /> Attachments: Figures 1 and 2 <br /> Boring Log <br /> Monitoring Well Detail <br /> Ground-Water Sampling Information Sheet It <br /> AEN Laboratory Report <br /> 14 <br /> i <br /> ii <br /> 3 <br />