Laserfiche WebLink
At' HORIZON ENVIRONMENTAL INC. <br /> Specialists in Site Assessment,Remedial Testing, Design and Operation <br /> 1 <br /> January 31, 2005 <br /> FEB 0 2 2095 <br /> Mr. Mike Karvelot ENViROWNT HEALTH <br /> Quik Stop Markets Inc. KRMlT/SEMES <br /> 4567 Enterprise Street <br /> Fremont, California 94538 <br /> Subject: Quarterly Groundwater Monitoring Report <br /> Fourth Quarter 2004 <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 which documents fourth <br /> quarter 2004 groundwater monitoring at the subject site located in San Joaquin County as <br /> shown on Figure 1. There are currently six groundwater monitoring wells (MW-1 <br /> through MW-6) as shown on Figure 2. <br /> Groundwater Monitoring <br /> Groundwater monitoring activities were conducted by Horizon on November 30, 2004 <br /> according to Horizon Field Methods and Procedures (Attachment A). Monitoring <br /> activities included measurement of static groundwater level, purging groundwater from <br /> the wells, collection of groundwater samples, disposal of purge water, and preparation <br /> and delivery of the samples to the analytical laboratory. <br /> The depth to groundwater was measured to the nearest 0.01 foot from the top-of-casing <br /> (TQC) in monitoring wells MW-1 through MW-6. The groundwater physical parameters <br /> conductivity, pH and temperature were monitored with field instrumentation during the <br /> purging process. The visual characteristics of turbidity and presence of free product or <br /> sheen if any, and the obvious olfactory characteristics of the groundwater were also noted <br /> during the purging process. Field groundwater level and purge data were recorded on <br /> Monitoring Well Data sheets (Attachment B). <br /> Groundwater samples were collected from groundwater monitoring wells MW-I through <br /> MW-6 and were submitted, under chain-of-custody (COC) documentation, to Kiff <br /> 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 hydrocarbon as gasoline (TPHg), the volatile aromatic compounds <br /> benzene, toluene, ethylbenzene and total xylenes (BTEX), the fuel oxygenates methyl-t- <br /> butyl ether (MTBE), diisopropyl ether (DIPE), ethyl-t-butyl ether (ETBE), ter -amyl <br /> 4970 Windplay Drive,#C5 • El Dorado Hills,CA 95762 • (916)939-2170 • FAX(916)939-2172 <br /> PO.Box 5283 • Bakersfield,CA 93388 • (661)589-8389 • FAX(661)589-1456 <br />