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� CeofogicafTecfinics Inc. �./ t..� Page 4 Soil Boring and Monitoring Well Installation Work Plan Former Moresco Property Project No.251.2 November 4, 1998 sample to the VOA vial and glass amber liter bottles. Once the sample container is filled and +- capped, the bottle will be inverted, tapped, and checked for headspace bubbles. The sample container is identified and labeled with a unique designation, inserted into foam holders and placed in an ice chest cooled to 4°C for transport to the laboratory. All non-disposable sampling equipment is decontaminated using a steam cleaner before and between uses. The effectiveness of the decontamination procedure is ensured by using the following quality control measures: • Disposable gloves will be used by the technician to collect all samples and will be changed with each sampling event. • A bailer blank for each well will be collected prior to sampling by filling the • decontaminated stainless steel bailer with water (provided by the laboratory) and then v filling a VOA vial (provided by the laboratory) using the same procedures for actual sample collection. Bailer blanks for each sample, along with a field blank (prepared from water provided by the Lo laboratory poured into a VOA vial on site), will accompany the samples to the laboratory and serve as checks against cross contamination. A chain of custody document, listing all samples collected, accompanies the samples from field to laboratory, thereby providing a means to track their movement and insure their integrity. `N All water purged from each monitoring well and not used as a sample will be placed in a 55 gallon DOT approved container, properly labeled and stored on site. +N 2.2.1 Groundwater Sample Analyses One groundwater sample will be submitted to BSK Laboratories of Fresno (State Certified Laboratory 91180) and analyzed for: • Benzene, Toluene, Ethylbenzene and Xylene (BTEX) by EPA method 8020, • Gasoline range petroleum hydrocarbons (TPH-G) by EPA method 8015(m) • Methyl Tertiary Butyl Ether (MTBE)by EPA method 8020 with confirmation by 8260 '' The detection limits for these compounds are listed below. A Chain of Custody will be completed for all samples collected and tracked to ensure sample integrity. L- DetectionLimits: - aso ane Water µg Value in parenthesis is detection Fy method LN 3.0 SCHEDULE & REPORTING L' Geological Technics Inc. anticipates beginning field work no later than 30 days after work plan approval and cost pre-approval from the Fund. The information gathered during this phase of work will be presented in a report that will include a summary of the geology as L. well as the results of sample analyses. Dr. Ray Kablanow, a registered geologist and certified