Laserfiche WebLink
�r <br /> Delta <br /> �/. Environmental <br /> Consultants,Inc. <br /> Solving environment-related business problems worldwide www.deltaenv.com <br /> 3164 Gold Camp Drive e Suite 200 #WE(DENEDD <br /> Rancho Cordova, California 95670 USA 916.638.2085 800.477.7411 Nov y <br /> Fax 9I6.638.8385 720o5 <br /> �N�`RON <br /> October 26, 2005 PERMi�ROCESrH <br /> Mr. Harlin Knoll <br /> San Joaquin County Environmental Health Department <br /> 304 E. Weber Avenue,Third Floor <br /> Stockton, California 95202-2708 <br /> Subject: Quarterly Groundwater Monitoring Results Report, Second Quarter 2005 <br /> Former Tesoro Station#67080 <br /> 2448 Kettleman Road <br /> Lodi,California <br /> Delta Project No. D003-007-1 <br /> Dear Mr. Knoll: <br /> Delta Environmental Consultants, Inc. (Delta) has been authorized by Tesoro Petroleum Company <br /> (Tesoro) to perform quarterly groundwater monitoring at the site located at 2448 Kettleman Road, Lodi, <br /> California(Figure 1). <br /> The locations of former and current site features are illustrated on Figure 2. Quarterly groundwater <br /> monitoring is intended to evaluate the distribution of petroleum hydrocarbon constituents in groundwater <br /> beneath the site. This report summarizes results of the samples collected from the site during the second <br /> quarter of 2005. Well construction details for the three current groundwater monitoring wells (MW-1, <br /> MW-2, and MW-3) are included in Table 2. The work was performed in accordance with the held <br /> methods and procedures included in Enclosure A. <br /> Groundwater Level Measurements <br /> Depth to groundwater was measured in monitoring wells MW-1, MW-2, and MW-3. The measurements <br /> taken on May 9, 2005, were used to construct a water table elevation contour map included as Figure 2. <br /> Depth measurements were obtained using an electronic water-level indicator and recorded to the nearest <br /> 0.01-foot. The water-level indicator was cleaned with a solution of non-phosphate detergent and de- <br /> ionized water, and rinsed before each use. Groundwater elevation data are presented in Table 2 and <br /> inferred groundwater elevation contours are presented on Figure 2. Depth to groundwater ranged from <br /> ____45.88.to_46.99-feet below_the top_of the wellcasing. Ground water sampling information sheets are <br /> presented in Enclosure B. Based on groundwater elevation data computed from dept to 'water - <br /> measurements in wells, the groundwater flow direction across the site was inferred to be to the southeast <br /> with an approximate gradient of0.03ft/ft. <br /> •, _ _ Ame.bervf,, <br /> Xinogerf <br /> Environmenral Alliance <br />