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2245 West Charter Way,Stockton <br /> Workplan for Additional Environmental Sampling <br /> August 7,2013 <br /> • Each soil core section(including plastic liner)selected for chemical analyses will be immediately separated <br /> from the total core. The liner containing the selected core will be capped at each end with Teflon® <br /> sheeting, followed by a tight-fitting plastic cap that will be wrapped in tape. Each sample will then be <br /> labeled, logged onto a Chain-of-Custody and placed in an iced cooler for transport to the analytical <br /> laboratory; and <br /> • All borings will be backfilled by free falling neat cement grout after collection of the bottom soil sample or <br /> grab-groundwater sample. <br /> Grab-Groundwater Sampling Protocol <br /> Grab-groundwater samples will be collected at borings B21,B22,B23,B25 and B27. After a boring is advanced to <br /> the desired depth, the drill rod will be removed from the boring. A temporary one-inch diameter well casing will <br /> then placed to the bottom of the boring. After the casing is in place, a '%-inch diameter disposable bailer will be <br /> lowered to the bottom of the temporary well casing to obtain the grab-groundwater sample. The grab-groundwater <br /> sample will then be decanted into the appropriate laboratory provided containers. This process will be repeated at <br /> the other four borings. <br /> Each grab-groundwater sample will be labeled, logged onto a Chain-of-Custody and placed in an iced cooler for <br /> transport to the analytical laboratory. <br /> Disposal of Investigative-Derived Waste <br /> Drill cuttings are not generated during this investigation as drilling will be performed using a direct push rig. <br /> Plastic/acrylic liner debris will be hand cleaned and disposed of as construction debris. Drilling decontamination <br /> water will be contained in a 55-gallon drum and will be transported for recycling. <br /> ANALYTICAL SERVICES <br /> Select soil and up to five grab-groundwater samples will be chemically analyzed at SunStar Laboratories (State <br /> DHS ELAP-Certification#2250)for nitrate as N,ammonia and TKN using the following test methods: <br /> • Nitrate as N(EPA Method 300.0); <br /> • Ammonia(EPA Method 350.3);and <br /> • TKN(EPA Method 351.2) <br /> SCHEDULE <br /> Commencement of the project will begin once an inspection is scheduled with SJCEHD. <br /> Should you have any questions regarding this submittal,do not hesitate to call the undersigned at 310-854-6300. <br /> Respectfully Submitted, S�ONAL G,4-,_ 9 �. MAq (O <br /> O e� r9`PyCP <br /> 1B, a m No. 8356 <br /> Brian Martasin,P.G.#8356 EXP 3 <br /> 0 Q <br /> Principal Geologist q P= <br /> TFOF CATV <br /> Attachments: <br /> ANDERSEN Page 3of 4 <br /> ENVIRONMENTAL <br />