ARCHIVED REPORTS XR0011207 - Laserfiche WebLink

Home Browse Search

Quarterly Report - Second Quarter 2002 K& S GAS & GROCERY ' 701 East Charter Way, Stockton, California ' 1.0. INTRODUCTION At the request of Mr Khaldoon Othman of K & S Grocery, Advanced GeoEnvironmental, Inc ' (AGE)has prepared this quarterly report for the property located at 701 East Charter Way,Stockton, California The scope of work Included a quarterly ground water monitoring event and preparation I of this report The site setting is Illustrated in Figure 1 Structures and monitoring well locations are Illustrated in Figure 2 Background Information is summarized in the AGE-prepared Monitoring Well Installation Report, dated 02 June 1999 Data from previous ground water monitoring events are ' summarized in the tables of this report ' 2.0. PROCEDURES Field work was performed in accordance with guidelines established by the Central Valley Regional ' Water Quality Control Board for investigation of underground storage tank (UST) sites lie 2 1 WELL MONITORING AND EVACUATION On 08 April 2002, a Solinst water level meter was used to measure the depth to ground water in ' monitoring wells MW 1 through MW3 relative to the tops of the well casings (well heads) The ground water elevations and gradient were determined from these data (Table 1) ' After recording water level measurements, disposable polyethylene bailers were used to evacuate each well of standing water Approximately 3 casing-water volumes were removed from each well- ' 10 5 gallons from MW and 7 gallons each from MW2 and MW3 Ground water temperature,pH and conductivity were measured at regular purge-volume intervals during evacuation using an Oakton water analyzer Field sheets and data are included in Appendix A Evacuated water was ' stored on-site in properly labeled, 55-gallon Department of Transportation(DOT)-approved drums t2 2 COLLECTION OF GROUND WATER SAMPLES The depth to ground water was measured in each well following evacuation to assure a minimum of 80%recharge prior to sampling Water samples were then collected using new disposable plastic bailers Each water sample was transferred into laboratory-supplied 40-m1 VOA vials containing 0 5 ml 18%hydrochloric acid as a sample preservative The sample vials were then labeled with the ' monitoring well designation, date, time of sampling and the sampler's initials The samples were • transported in a chilled container under chain of custody to CAL TECH Environmental Laboratories 1 Advanced GeoEnvlronmental,Inc