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BLAINE <br /> TECH SERVICES INC <br /> GROUNDWATER SAMPLING SPECIALISTS <br /> SINCE 1985 <br /> December 15, 2004 <br /> Western Farm Service <br /> 3650 Mt Diablo Blvd <br /> Suite 102 <br /> Lafayette, CA 94549 <br /> Attn NancyBishop <br /> P <br /> SITE <br /> Western Farm Service <br /> 35100 S Highway 33 <br /> Vernalis, California <br /> QUARTER <br /> 4t' Quarter of 2004 <br /> GROUNDWATER MONITORNG REPORT 041123-MN-1 <br /> This report contains data collected during routine inspection, gauging and sampling of <br /> groundwater monitoring wells performed by Blaine Tech Services, Inc in response to the <br /> request of the consultant who is overseeing work at this site Data collected in the course of <br /> our field work is presented in a TABLE OF WELL GAUGING DATA The field <br /> information was collected during our preliminary gauging and inspection of the wells, the <br /> subsequent evacuation of each well prior to sampling, and at the time of sampling <br /> Measurements taken include the total depth of the well and the depth to water The surface <br /> of water was further inspected for the presence of immiscibles that may be present as a thin <br /> film (a sheen on the surface of the water) or as a measurable free product zone (FPZ) At <br /> intervals during the evacuation phase, the purge water was monitored with instruments that <br /> measure electrical conductivity (EC), potential hydrogen (pH), temperature (degrees <br /> Fahrenheit), and turbidity (NTU) In the interest of simplicity, fundamental information is <br /> tabulated here, while the bulk of the information is turned over directly to the consultant who <br /> is making professional interpretations and evaluations of the conditions at the site <br /> • <br /> Blaine Tech Services,Inc 041123-"-1 Western Farm Service @ 35110 S Hwy 33,Vernalis,CA page 1 <br />