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HORIZON ENVIRONMENTAL INC. <br /> Spectaiists in Site Assessment,Remedial Testing Design and Operation <br /> • �June 15, 2000 <br /> Mr Mike Karvelot <br /> Quilt Stop Markets Inc <br /> �y <br /> 4567 Enterprise Street -- <br /> Fremont, California 94538 <br /> S . <br /> Subject Quarterly Groundwater Monitoring Report <br /> Quik Stop Station No 039 <br /> 2285 East Fremont Street, Stockton, California <br /> Mr Karvelot <br /> Horizon Environmental Inc (Horizon) has prepared this report for second quarter 2000 <br /> groundwater monitoring at the subject site (Figure 1) 'There are currently three groundwater <br /> monitoring wells (MW-1 through MW-3) at the site (Figure 2) <br /> Groundwater Monitoring <br /> . Groundwater monitoring activities were conducted by Horizon on May 19, 2000 <br /> Monitoring activities included measurement of static groundwater level, purging groundwater <br /> from the wells, collection of groundwater samples, disposal of purge water, and preparation <br /> and delivery of the samples to the analytical laboratory Horizon Field Methods and <br /> Procedures are presented as Attachment A to this report <br /> The depth to groundwater was measured to the nearest 0 01 foot from the top-of-casing <br /> (TOC) m monitoring wells MW-1 through MW-3 Field groundwater level data were <br /> recorded on the Monitoring Well Data sheets (Attachment B) and are summarized in Table 1 <br /> Depth-to-groundwater measurements were subtracted from the surveyed TOC elevations to <br /> calculate groundwater elevations Field groundwater level data are included on Horizon <br /> Monitoring Well Data sheets(Attachment B) and are summarized in Table 1 <br /> Field groundwater monitoring well purge data are included on Horizon Monitoring Well Data <br /> sheets The physical parameters conductivity, pH and temperature were monitored with field <br /> instrumentation during the purging process The visual charactenstics of turbidity and <br /> presence of free product or sheen, and the obvious olfactory characteristics of the <br /> groundwater were also noted during the purging process <br /> Groundwater samples were collected from groundwater monitoring wells MW-1 through <br /> . MW-3 Groundwater samples were submitted under chain-of-custody(COC) documentation <br /> 5011 Golden Foothill Parkway Suite 7 • EI Dorado Hills, CA 95762 • (916) 939-2170 • FAX (916) 939-2172 <br /> PO Box 5283 9 Bakersfield CA 93388 (661) 589-8389 • FAX (661) 589-1456 <br />