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... ... . <br /> S E C 0 R <br /> 76 Service Station#11195 <br /> September 3, 2004 <br /> Page 4 <br /> Emergency Response" guidelines (CCR Title 8, Section 5192), SECOR will prepare <br /> a site-specific Health and Safety Plan (HASP). Field staff and contractors reviewed <br /> the HASP before beginning field operations at the site. <br /> • Permitting. The applicable permits for monitoring well installation were obtained <br /> from San Joaquin County prior to beginning work. <br /> • Groundwater Monitor Well Reinstallaton. On July 13, 2004, damaged <br /> groundwater monitoring well MW-13 was over-drilled using 10-inch hollow stem <br /> auger to a depth of 21 feet below ground surface (bgs). The boring logs for the <br /> original installation of well MW-13 and a current boring log showing well construction <br /> details are included as Attachment A. Reinstallation of we[[ MW-13 was completed in <br /> the borehole generated during the over-drilling process. Groundwater monitoring <br /> well MW-13 was constructed of 2-inch diameter schedule 40 PVC pipe and was <br /> screened from 6 to 21 feet bgs. Well MW-13 was completed above grade with a -; <br /> steel stove pipe finish set in concrete. <br /> • Soil Selection and Analysis. No soil samples were collected during the 1 <br /> reinstallation of well MW-13. <br /> • Monitor Well Development, Sampling, and Analysis. Following installation, <br /> monitoring well MW-13 was developed by rigorously surging the well over the length <br /> r of the screen interval and by purging approximately 10 casing volumes of water. <br /> Well MW-13 will then be sampled and reported by TRC during the next quarterly <br /> monitoring and sampling event. <br /> • Soil Disposal. Soil cuttings generated during drilling operations were temporarily <br /> stored onsite in two DOT-approved 55-gallon drums pending transport by a licensed f <br /> disposal contractor (Filter Recycling Services) to an appropriate disposal or <br /> treatment facility. <br /> • Well Surveying. Upon completion of well construction, the well was surveyed by a <br /> California-licensed surveyor to a local benchmark relative to mean sea level. s <br /> Groundwater gradient data will be interpreted utilizing the top of well casing <br /> elevations and depth-to-water measurements. Well survey data is included as rj <br /> Attachment B. <br /> Field Procedures are included as Attachment C. 1 <br /> CONCLUSION <br /> J <br /> Reinstallation of well MW-13 was successfully completed and the well has been added to the <br /> regularly scheduled quarterly groundwater monitoring and sampling. <br /> If there are any questions, please call us at (916) 861-0400. 1 <br /> :1 <br /> a <br /> I:1ConocoPhillips1111951Well MW-13 Reinstallation Report.doc <br />