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CRCEnvironmental Risk Management, Inc. <br /> JUL 16 Pf 9 '2. p 7 <br /> July 6, 1993 <br /> Mr. Michael Infurna <br /> San Joaquin Public Health Services <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> RE: Bi-Annual Groundwater Monitoring Report <br /> American Savings Bank Property <br /> 222 N. El Dorado <br /> Stockton, California <br /> Dear Mr. Infurna: <br /> As per San Joaquin County Regulations, CRC Environmental Risk Management, Inc. ("CRC") has <br /> prepared a Bi-Annual Groundwater Monitoring Report relative to the monitoring well located at the <br /> American Savings Bank Property, 222 N. El Dorado Street, Stockton, California. The well is located <br /> in the southeast parking area, and was originally installed by Clayton Environmental Consultants on April <br /> 11, 1991. The well was installed as a part of a Phase II Environmental Investigation on the subject <br /> property, dated May 14, 1991. The total depth of the well is 49.5 feet. The required well monitoring <br /> consisted of inspecting the condition of the well box, cement seal, well cap, lock, depth of groundwater, <br /> and a visual inspection of the groundwater. <br /> CRC performed the well monitoring at the subject property on May 27, 1993. A representative of the <br /> San Joaquin Public Health Services was present during the monitoring by CRC. The inspection of the <br /> well revealed the following: <br /> ♦ The well box was in good condition, however, the concrete_ _ <br /> seal around the box was <br /> broken whichoul <br /> cdate <br /> '`allow water to infiltrate`the well box. The looseconcrete -was . <br /> removed to a depth of about six inches and the seal was re-poured. <br /> ♦ The internal compression fitting well cap was tight and locked. <br /> ♦ The metal surface plate or cap was cracked at the screw joint. A new cap has been <br /> installed. <br /> ♦ The depth to groundwater was measured using a weighted chalk tape. The depth from <br /> ground surface to top of groundwater was 36 feet 8 inches. <br /> ♦ A bailer was lowered down the well casing in order to visually inspect the groundwater. <br /> The water appeared to be clear with nonvisible sheen or floating residue. <br /> 17875 Von Karman Avenue, Suite 200 ♦ Irvine, California 92714 <br /> (714)476-1260 ♦ Fax: (714)476-8211 <br />