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24 June 2008 <br /> AGE-NC Project No. 05-1286 <br /> Page 4 of 7 <br /> 58 to 80 feet bsg. A 2-foot bentonite pellet (TR30) plug was installed above the filter pack and <br /> hydrated for 30 minutes. The well was then grouted to near-surface with type I/II portland cement, <br /> and a water-tight, 12-inch traffic-rated well box was installed over the well. <br /> As-builtwell diagrams forwells EW-1113,EW-1213,IW-BH 1,IW-BH2A and MW-13B are depicted <br /> on the boring logs in Appendix B and were uploaded to the State GeoTracker website. <br /> 3.2. WELL DEVELOPMENT <br /> On 25 and 30 April 2008, wells EW-1113, EW-1213, IW-BHI, IW-BH2A and MW-13B were <br /> developed using a steel bailer,Grundfos submersible and/or an inertial pump with%-inch dedicated <br /> polyethylene tubing. Prior to development,the depth to groundwater in wells were measured in all <br /> wells from the top of the well casing to the nearest 0.01-foot utilizing a Solinst water level meter. <br /> Afterwards, groundwater was purged from the wells until the water was visually sediment free; <br /> approximately 630 and 810 gallons of water were removed from wells EW-11B and EW-1213, <br /> respectively;approximately 640 gallons of water were removed from wells IW-BH 1 and IW-BH2A, <br /> and approximately 140 gallons of water were removed from well MW-1313. Groundwater <br /> temperature, pH, and conductivity were measured at regular intervals during purging using an <br /> Oakton water analyzer. The field data sheet kept during the development of the wells and MW-13B <br /> are included as Appendix C. <br /> Purged groundwater from wells was temporarily containerized onsite in a 2,500-gallon and 700- <br /> gallon poly tanks and stored pending proper re-injection or disposal. <br /> 3.3. WELL-HEAD SURVEY <br /> On 08 May 2008, a California state-licensed surveying engineer from Morrow Surveying, West <br /> Sacramento,California,surveyed the location ofwells MW-1A through MW-1 OB,MW-13B,EW- <br /> 1113,EW-12B,IW-BHl and IW-BH2A(excluding MW-6A and MW-613)to the nearest centimeter <br /> using coordinate datum NAD 83(CORS), datum ellipsoid GRS80, reference geoid GEOID99 and <br /> CORS stations DIAB and CNDR. The results of the monitoring well survey are recorded in Table <br /> 1. The surveying report is presented in Appendix D. The XYZ data and map were uploaded to the <br /> State GeoTracker online database. <br /> 3.4 WASTE DISPOSAL <br /> Soil cuttings and water and well development activities were properly manifested and disposed as <br /> Advanced GeoEnvironmental,Inc. <br />