ARCHIVED REPORTS XR0012908 - Laserfiche WebLink

Home Browse Search

1710 Main Street Escalon, CA 95320 Phone: (209) 838-3507 FAX: (209) 838-3509 93 UC -6 PM 2: 17 Linda Turkatte San Joaquin County Public Health Services Environmental Health Division P.O. Box 2009 Stockton, CA 95201 ARAC&MA Working To Restore Nature August 3, 1993 RE: Corrigan Property, 620 San Juan Drive, Stockton, California, Site Code: 2001 Dear Ms. Turkatte: This correspondence details Second Quarter 1993 field activities performed at the above referenced site (Figure 1) by RESNA Industries, Inc. (RESNA). Groundwater monitoring and sampling was conducted on April 21, 1993 by RESNA personnel. Water level measurements were collected from each monitoring well using a Solinist Water Level Meter (Model 101). Groundwater monitoring of wells MW1, MW2, and MW3 indicate a drop of the groundwater table since last monitoring in January 1993, averaging 0.66 feet. Table 1 summarizes groundwater elevation data. A groundwater gradient map was created using the April 21, 1993 data. Groundwater flows to the east at a gradient of 0.0065 ft/ft or approximately 34 feet/mile (Figure 2). Prior to sampling, at least 10 casing volumes of water were purged 'from each well.. Groundwater samples were collected from the three wells after stabilization of pH, electrical conductivity (EC) and temperature. The samples were collected using dedicated, disposable bailers. The samples were sent to State -certified RESNA Environmental Laboratories in Fremont, California. Collected water samples were analyzed for benzene, toluene, ethylbenzene, xylenes (BTEX) using EPA method 8020 and total petroleum hydrocarbons as gasoline (TPHG) and diesel crPHD) using EPA method 8015. All purged water was contained in DOT approved drums and left on site pending laboratory analyses. Water containing nondetectable concentrations of BTEX and TPHG will be disposed of at the site by dumping the water within planters located on-site. 2QR-1993.FUL