Laserfiche WebLink
Fo � n I7 :J <br /> S E P 2 o zQo2 <br /> 18 September 2002 ENVIRONMENT HEALTH <br /> AGE-NC Project No, 99-0645 PE IMIT/SERVICES <br /> Page 2 of 2 <br /> • The screen interval of the shallow SVE wells will be set at between 15 feet and 40 feet bsg to <br /> evaluated the sand lithology at that interval. <br /> • Adequate soil samples will be collected from all soil borings and analyzed to define the lateral <br /> and vertical extent of impacted soil. SVE soil borings west of the former UST area will be <br /> advanced to approximately 70 feet bsg, SVE borings east and south of the former UST area <br /> will be advanced to approximately 80 feet bsg, and the one slanted soil boring for site <br /> assessment purposes north of the former UST area will be advanced to 80 feet bsg;previous <br /> soil samples collected at 70 feet bsg in boring B3 and 80 feet in all monitoring well soil <br /> borings were non-detect for the chemicals of concern. Soil samples will be collected at 5-foot <br /> intervals beginning at a depth ofl0 feet bsg. <br /> • The monitoring well removal method will follow the SJCEHD Standards For Well <br /> Construction and Destruction, the well abandonment will follow the procedures listed in <br /> Section 13.17. Due to soil contamination at the site from the UST release of petroleum. <br /> hydrocarbons, "the well shall be destroyed by removing all material within the original <br /> borehole". The excavated boring will be back filled with a neat cement grout mix will that will <br /> consist of five gallons of water to a 94 pound bag of portland cement or sand cement mix. <br /> • All grout mix utilized during well construction will consist of five gallons of water to a 94 <br /> pound bag of neat cement or sand cement mix. <br /> • Collection and analysis of water samples ft-om the on-site drinking water well will be included <br /> in the quarterly monitoring events until this well is properly destroyed. <br /> AGE will notify the EHD at least 48-hours prior to commencement of field procedures. If you have <br /> any questions or comments, please contact our office at (209) 467-1006. <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. <br /> William Little <br /> Project Geologist <br /> cc: Mr. Nick Bokides <br />