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. hydrochloric acid and sealed without headspace All of the samples were <br /> labeled and stored on ice for transpoi t to Kiff Analytical, LLC of Davis, <br /> California (ELAP #2236) under appropriate chain-of-custody <br /> documentation Well sampling field logs are included in Appendix A <br /> Well sampling purge water was stored in 55-gallon steel drums, labeled <br /> and left on-site for temporary storage until proper off-site disposal can be <br /> arranged <br /> 4 . 0 GROUNDWATER SAMPLE ANALYSIS <br /> The groundwater samples were analyzed for total petroleum hydrocarbons <br /> as gasoline (TPH-G), benzene, toluene, ethylbenzene, total xylenes <br /> (collectively known as BTEX), the fuel oxygenates, alcohols, lead <br /> scavengers, and 1,2-dichloropropane by EPA Method 8260B and total <br /> petroleum hydrocarbons as diesel (TPH-D) by EPA Method 8015 The <br /> analytical tesults for this and previous sampling periods aie presented in <br /> Table Two The certified analytical report and chain-of-custody <br /> documentation are included in Appendix B <br /> 5 . 0 DOMESTIC WELL SAMPLING <br /> • Several domestic wells were sampled by ASE during this quarter Table <br /> Three shows tabulated historical and current analytical results of the <br /> domestic wells sampled on a quarterly or semi-annual basis <br /> 6 . 0 AS/VE SYSTEM <br /> On May 13, 2003, ASE re-started operation of an air-spargtng/vapor- <br /> extraction (AS/VE) remediation system to remediate elevated petroleum <br /> hydrocarbon concentrations identified in groundwater and soil beneath the <br /> subject site <br /> 6 1 Site Visas <br /> During the months of May, June and July 2003, ASE generally visited t h e <br /> site for operation and maintenance activities two times each week During <br /> the site visits, ASE noted the date, time, the vacuum influence on each VE <br /> well, the air flow into each of the AS wells, the vacuum flow combined <br /> from the VE wells, the IC engine's operating parameters, and commented <br /> on any issues such as system alarms or shut-offs ASE also performed <br /> • maintenance procedures as necessary on all equipment <br /> Frank's One Stop Quarterly Report — July 2003 Sampling <br /> -3- <br />