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' 07 October 2003 AGE-NC Project No 95-0121 , ' Page 2 of 7 ' polyethylene disposable bailers, approximately 4 gallons of ground-water was purged from VW-1 utilizing a disposable bailer, however the well was not further monitored or sampled due to the presence of approximately 0 9 feet of free-phase petroleum product Temperature, pH and conductivity (field parameters) were measured for stabilization at regular purge-volume intervals frorn each well using an Oakton water analyzer Field data and logs are included with Appendix A Purged ground water was containcrized in a Department of Transportation(DOT)or United Nations t (UN)-approved 55-gallon steel drums and was stored on-site in an area lacking general public access 2 2 FLOATING PETROLEUM PRODUCT REMOVAL On 12 June 2003, approximately 0 90 feet of free-phase floating petroleum product was measured ' in well VW-1 utilizing a Solinst Interface Probe (Appendix A), thereafter, a clear, disposable polyethylene bailer was utilized at the well to remove floating petroleum product and ground water, bailing activities continued (approximately 4 gallons) until product could not be observed On 16 June 2003, approximately 0 49 feet of free-phase petroleum product was measured in well VW-I utilizing a Solrnst Interface Probe(Appendix A),floating petroleum product and ground water ' was removed from the well utilizing a clear,disposable polyethylene bailer Manual product removal (bailing) activities continued (approximately 4 gallons) until product could not be observed The ' free-phas6 petroleum product was stored on-site in 55-gallon, DOTIUN-approved storage drums The removal was performed in a accordance with California Underground Storage Tank Regulations, Article 5, Section 2655 r 2 3 GROUND WATER SAMPLING Following well purging,ground water levels at wells VW-3 through VW-7 achieved a minimum of 80 percent recharge prior to sample collection Groundwater samples were collected from the purged ' wells utilizing the dedicated, disposable bailers and transferred into 1-liter amber bottles without sample preservative and 40-m1 EPA-approved volatile organic analysis(VOA)vials containing 0 5 ml 18%hydrochloric acid as a sample preservative Ground water samples were not collected from r IVW-1 due to floating petroleum product being encountered Care was taken to ensure that visible air bubbles were not present in the vials after filling and capping Ground water sample containers were labeled with the well designation, date, time, and sampler's initials r i i f Advanced Gen Environmental,Inc