ARCHIVED REPORTS XR0010886 - Laserfiche WebLink

Home Browse Search

r� Quarterly Report - December 1996 ELKHORN COUNTRY CLUB } 1050 Elkhorn Drive, Stockton, California 1.0. INTRODUCTION In accordance with a request from Mr. Bob Young of Elkhorn Country Club, Advanced I i :-� GeoEnvironmental, Inc. (AGE) has prepared this Quarterly Report of field activities performed during the fourth quarter of 1996 at 1050 Elkhorn Drive, Stockton, California(the site). The scope of work included monitoring,purging and sampling of each of the six monitoring wells on the site. j The site and its surroundings are illustrated in Figure 1 -Location Ma Structures and round water g g P• _ g monitoring well locations on the site are depicted in Figure 2 -Site Plan. The monitoring and sampling were performed in accordance with guidelines established by the San Joaquin County Public Health Department-Environmental Health Division(PHS-EHD)and Central Valley Regional Water Quality Control Board (CVRWQCB) for investigation of underground storage tank sites. Site history and findings from previous investigations and monitoring events at the site are detailed in the Corrective Action Plan (CAP) and previous Quarterly Reports prepared by AGE. 1 .,..... 2.0. PROCEDURES 2.1.- MONITORING WELL PURGING On 13 December 1996,the water level in each well (MW-1 through MW-6)was measured relative .� to the top of its well casing using a Solinst water level meter (Table 1). After water levels were ., measured, approximately 8 gallons of water(a minimum of three well volumes) were removed from each well using a PVC mailer. Temperature and conductivity were pleasured at one-gallon intervals :j using an ICM model 52200 water analyzer. Stabilization data and field logs-are included in Appendix A. Purged water was stored on-site in 55-gallon drums. 2.2. SAMPLE COLLECTION AND ANALYSIS i Water samples were collected from each well using new disposable plastic bailers and transferring the collected water into 40-m1 EPA-approved VOA vials. The samples were labeled, logged on a chain-of-custody form, placed in a chilled container and transported to McCampbell Analytical Inc. (MAI), in Pacheco, California. Each sample was analyzed for total petroleum hydrocarbons quantified as gasoline (TPH-g), volatile aromatics (benzene, toluene, ethyl benzene and xylenes: BTE&X) and methyl-tert-butyl ether(MTBE) in accordance with EPA methods 5030/8015m and 602. I