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March 11, 1994 <br /> (GeoAudit 1.33) <br /> Ms. Elizabeth Thayer <br /> ` Associate Engineer <br /> CALiFflRNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> `.344 Routier Road <br /> Sacramento, CA 95827.3098 <br /> Subject: Monthly Monitoring Report - Geweke <br /> 16 South Cherokee Lane <br /> Lodi, California <br /> Dear Nis. Thayer: <br />�f <br /> The purpose of this letter is to report the data obtained during the February monitoring of <br /> the in-situ bioremediation pilot test at 16 South Cherokee Lane. The monitoring activities <br /> were designed during the February 4, 1994 meeting between Geological Audit Services, Inc. <br /> (OeoAudit) and CVRWQCB personnel, and subsequently documented and scheduled in <br /> GeoAudit's February 7, 1994 letter to Elizabeth Thayer. - <br /> The blower installed on-site was turned off during the collecti9n-of all samples, regardless <br /> of type (i.e. vapor, water, soil). Additionally, the blower was turned off to the southern <br /> portion of the site (VW-1, VW-7) after the February 17 sampling. <br /> RUUNDWATER MONITORING <br /> `'BocUrki Analysis <br /> February 2, immediately following bacterial inoculation, a groundwater sample was <br /> collected from EW-1. This sample was then analyzed for the presence of bacteria, to provide <br /> control data on the abundance and variety of bacteria in the groundwater prior to the pilot <br /> test. Four bacterial species, totalling approximately 7,500/ml, were observed in this sample. <br /> The results are shown in Table 1. <br /> Since inoculation, groundwater samples were collected from MW-14 on February 7, 10, 14, <br /> 06.e0fti Am&logia..pec. 1 <br /> a�a'e� y,n.m�an9e <br />