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' QUARTERLY MONITORING WELL FINDINGS <br /> Western Oil & Spreading Inc Acampo Plant Site - <br /> ' 79256 N Highway 99, Acampo, CA Site <br /> December 29, 2003 <br /> SAMPLING PROCEDURE <br /> ' On December 23, 2003, Don Light of Del-Tech Geotechnical ical Services {DelTech) <br /> sampled WOS Monitoring Wells Nos 1 through 6 He removed the cover and the <br /> secured expansive plug from the enclosed 2 IN PVC casing After a small portion of <br /> the undisturbed water was withdrawn using a clean bailer and visually examined it for <br /> any free phase product Depth to water surface was measured with an indexed tape <br /> ' and probe The depth to water surface from the north edge of the top of the PVC well <br /> casing (TOC) and recorded <br /> ' The well casing was purged using a dedicated Waterra Inertia Pump with a clear PE <br /> tube with a ball foot valve evacuating six volumes of the casing A grab sample from <br /> the bailing tube was measured periodically for pH, EC, temperature, O R P and <br /> Dissolved Oxygen as well as visual characteristics noted Following sampling the <br /> Waterra sample tube was left in place in the well casing The well cap was replaced <br /> ' secured and the well left to recover Reference ATTACHMENT 6, GROUNDWATER <br /> SAMPLING RECORDS AND FIELD SUMMARY <br /> ' Later after well recovery sufficient sample to fill one each labeled quart amber glass <br /> bottle was collected using the Waterra system VOA samples were not collected as <br /> ' results have been below detectable levels for some time All bottles were placed in an <br /> iced cooler and delivered to Sequoia Laboratories via California Overnight shipping <br /> company under chain of custody(C of C)for analysis by Del-Tech's Mr Don Light <br /> ' ANALYSIS PROCEDURE <br /> ' The samples were analyzed for TPHd, using DHS LUFT protocol BTEX is no longer <br /> being measured as it has not been detected during prior sampling of groundwater <br /> ' Results are presented in tabular form with sample location site map as <br /> ATTACHMENT 2, "SITE CHARACTERIZATION -SUMMARY OF LAB RESULTS" <br /> 1 <br />