Laserfiche WebLink
SAMPLE RESULTS <br /> The pea gravel sample was analyzed using EPA methods 8015m and 8020 for detection of Total Petroleum <br /> Hydrocarbons as gasoline (TPHg), Benzene, Toluene. EthylbenM <br /> zeae, Xylenes and ethy t-Butal Ether <br /> (MTBE). Ands€!EPA method 7420 for total lead. All analytes tested for were below laboratory lower <br /> detection limits'except 0.76 mg/Kg TPHg, 0.011 ntg/Kg Xylenes and 3 mg/Kg Lead, see Appendix A. <br /> LEACHABIOTY TO GROUNDWATER <br /> Appendix B'cdtitains portions of the RBCA Tier 2, that was used to determine the likely hood of <br /> the above detected analytes leaching to groundwater. approximately 30 feet below ground surface. <br /> Results of the RBCA Tier 2 show that none of the detected analytes has the potential to leach into <br /> the groundwater. The leachability study was a worse case, without consideration of reduction by <br /> degradation of!the analytes. <br /> SUMMATION <br /> If W.A. Craig iso chooses, the pea gravel removed during the product dispensing piping removal <br /> can safely be'used as backfill material. based on chemical results obtained from the March 6, 2000 <br /> samples. <br /> i <br /> LIMITATIONS <br /> The information presented in this report is based on the following; <br /> 1.. The observations and data collected by field personnel. <br /> 2. The result of laboratory analyzes performed by a state certified analytical laboratory. <br /> 3. Our understanding of the regulations of San Joaquin County, the City of Stockton and the <br /> State of,,California. <br /> 4. References reviewed for this report. <br /> Changes in groundwater conditions can occur due to variations in rainfall, temperature, local and <br /> regional waterl�iuse and local construction practices. hi addition, variations in the soil and <br /> groundwater conditions could exist beyond the points explored in this investigation. <br /> State Certified Laboratory analytical results are included in this report. This laboratory follows <br /> EPA and State of California approved procedures; however, WEGE is not responsible for errors in <br /> these laboratory,results. <br /> The services performed by Western Geo-Engineers, a corporation under California Registered <br /> Geologist 43037 and/or Contractors License #513857, have been conducted in a manner consistent <br /> with the level of care and skill ordinarily exercised by members of our profession currently <br /> practicing under similar conditions in the State of California, the City of Stockton and San Joaquin <br /> County. <br /> 2 R-603 piping samples 2-2000 <br />