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HORIZON ENVIRONMENTAL INC. <br /> Specialists in Site Assessment Remedial Testing Design and Operation <br /> �r <br /> ' f <br /> • September 15 2000 - <br /> ivlr Mike Karvelot <br /> Quik Stop Markets Inc <br /> 4567 Enterprise Street <br /> Fremont California 94538 <br /> Subject Quarterlv Groundwater Monitoring Report <br /> Third Quarter 2000 <br /> Qutk Stop Station No 039 <br /> 2285 East Fremont Street Stockton, California <br /> Mr Karvelot <br /> Horizon Environmental Inc (Horizon) has prepared this quarterly monitoring report for the <br /> third quarter 2000 groundwater monitoring at the subject site located in San Joaquin County <br /> as shown on Figure 1 There are currently three groundwater monitoring wells (iG1W-1 <br /> through MW-3) as shown on Figure 2 <br /> Groundwater Monitoring <br /> Groundwater monitoring activities were conducted by Horizon on August 31, 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 (TOC) <br /> in monitoring wells MW-1 through MVS -3 Field groundwater level data were recorded on <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 characteristics of turbidity and <br /> presence of free product or sheen, and the obvious olfactory characteristics of the groundwater <br /> 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 /> to Kiff Analytical LLC (Kiff), a California Department of Health Services-certified analytical <br /> laboratory (FLAP No 2236) located in Davis, California The samples were analyzed for <br /> total petroleum hydrocarbons as gasoline (TPHg), the volatile aromatic compounds benzene, <br /> toluene, ethylbenzene and total xylenes (BTEX), and the fuel oxygenate methyl tertiary butyl <br /> 1�01 1 Golden Foothill Parkway Suite 7 . El Dorado Hills CA 95762 • (916) 939-2170 • FAX (916) 93Y-2172 <br /> P 0 Box 5283 • Bakersfield CA 93388 • (66 1) 589-8389 • I AX (661) 589-1456 <br />