ARCHIVED REPORTS XR0003528 - Laserfiche WebLink

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CAMBRIA and organic vapor screening using a photo-ionization detector (PID) Cambria will prepare an exploratory boring log for the well and PID measurements will be recorded on the well log Soil samples designated for chemical analyses will be retained in stainless steel or brass sample tubes The tubes will be covered on both ends with Teflon sheets and plastic end caps Soil samples will be labeled, entered onto a chain-of-custody record and placed into a cooler with ice for transport to a State of California certified laboratory for analyses A standard two-week turn- around time will be requested for laboratory results Monitoring Well Installation: The well will be constructed using 4-inch diameter Schedule 40 PVC casing The well screen interval will be approximately 5 feet above and 10 feet below first encountered groundwater The sandpack will be placed from the bottom of the well up to 2 feet above the top of the well screen followed by a 2-foot thick bentonite seal and cement grout to grade Actual well construction details will be based on field conditions during drilling The well will be secured with a locking cap under a traffic-rated well box Well Development and Sampling. Blaine Tech Services, Inc (Blaine) of San Jose, California will develop the new groundwater monitoring well using surge block agitation and a pump to evacuate groundwater from the well The new well will be sampled, along with the existing site wells, during the next regularly scheduled quarterly groundwater monitoring and sampling event Chemical Analyses: Selected soil samples and groundwater samples collected from well MW-15 will be analyzed for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, xylenes, fuel oxygenates (methyl tertiary butyl ether, di-isopropyl ether, tertiary amyl methyl ether, ethyl tertiary butyl ether, tertiary butanol, ethanol, and methanol), and lead scavengers (1,2-dichloroethane and ethylene dibromide)by EPA Method 8260 Wellhead Survey Activities Following monitoring well installation, a licensed surveyor will survey wellhead elevations relative to mean sea level and the latitude and longitude of the new well Report Preparation Following the receipt of analytical results from the laboratory, Cambria will prepare a written report, which will include field procedures, laboratory results, boring logs, and conclusions The scope of work described in this work plan will be performed under the supervision of a registered geologist 0783 3