COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

In August 2012, AGE, on behalf of the current property owners, collected ground water samples from MW -1, MW -2 and MW -3. Analytical results indicated that Total Petroleum Hydrocarbons (TPH) compounds were not detected above the method detection limits, with the exception of low concentrations of toluene and xylenes detected at maximum concentration of 3.6 micrograms per liter (Ng/1) and 5.7 pg/I, respectively. Solvents and other VOCs were not detected above the method detection limits. Dissolved metals were not detected above MCL drinking water standards. In addition, during the months of October 2012 and November 2012, AGE, on behalf of the current property owners, collected representative soil samples from each of the SWMU areas. A total of 21 soil samples were collected from depths of between 24 - inches bsg and 64 -inches bsg, and were analyzed for one or more of the following: metals, VOC and TPH. The following metals were detected: barium (19 detection at maximum of 210 milligrams per kilograms - mg/kg), chromium (six detection with maximum of 13 mg/kg), cobalt (six detections with maximum of 10 mg/kg), copper (19 detections with maximum of 680 mg/kg), nickel (nine detections with maximum of 21 mg/kg), vanadium (17 detections with maximum of 45 mg/kg) and zinc (18 detections with maximum of 49 mg/kg) were constituent metals detected at the site. None of the soil samples demonstrated detections of VOCs or TPH. In addition, none of the contaminants exceeded their respective CHHSL value for commercial/industrial land use. A summary of the results and analytical data collected from the October 1994 through November 2012 sampling activities are presented in the final Report, dated March 2013. The boring locations from the August 2012 through November 2012 sampling activities are shown on Figure 2. RFA and Closure Report In March 2013, a combined report that included a Phase I, RFA and RCRA Closure Report for the site, including the seven SWMUs and two AOCs was submitted to DTSC. The Report documents the following: Soils Representative soil samples from SWMU No. 1 area were collected under the building floor at depths ranging between 12 and 50 inches below the concrete base (Samples #11-12, #11-24, #11-50, #12-12,#12-24, #13-12, #14-12, and #14-50). Results of the soil samples indicated that metals and/or cyanides were not detect above CHHSL values for commercial/industrial land use in this area. The boring locations from the August 2012 through November 2012 sampling activities are shown on Figures 2. Representative soil samples from SWMU No. 2 area were collected under the building floor at depths ranging between 12 and 50 inches below the concrete base (Samples #14-12, #14-50, and historical sample SB -1/H(18')). Results of the soil samples indicated that metals were not detect above CHHSL values for commercial/industrial land use in this area. The boring locations from the August 2012 through November 2012 sampling activities are shown on Figures 2. Statement of Basis for Former Advanced Interconnect Technologies, Inc. Facility Page 10 of 15