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i Mr Jeff Wong Page 2 of 10 •, A Ground Zero technician developed the new shallow (A zone) wells on October 17, 2003, and V&W Drilling developed the deeper B and C zone wells from October 20, 2003 through October 23, 2003 Wells MW 10 through MW 12 and MW 14B were sampled on October 20, 2003 and well MW13C was sampled on October 23,2003 Morrow Surveying surveyed the new wells on October 28, 2003 Argon Laboratories, Inc (Argon), a State-certified hazardous waste testing laboratory (FLAP #2359), completed the laboratory analyses for all samples INVESTIGATIVE PROCEDURES Permitting and Protocols Well installation permits were obtained from EHD prior to initiating fieldwork All fieldwork was performed in accordance with Ground Zero's Site Health and Safety Plan and Sampling and Analysis Plan All down-hole drilling equipment was decontaminated using a steam cleaner Sampling equipment was decontaminated by washing in Alconox detergent solution, and thoroughly rinsing with clean water Rinsate generated from drilling and decontamination activities were placed into labeled Department of Transportation (DOT) approved 55-gallon drums Soil cuttings from hollow stem auger drilling activities were stockpiled on site Soil cuttings from mud rotary drilling activities were contained in a lined 10-yard bin Hollow Stem Auger Drilling and Sampling From October 6 through October 8, 2003, V&W advanced four borings (MW10, MW11, MW12 and V W 1) utilizing a drill rig equipped with hollow stem augers The wells were installed in the A Zone under the supervision of field geologist Sean Garvey Well locations are shown on Figure 2 Soil Sampling For subjective evaluation of contamination and soil classification, soil samples were collected from wells MW 10, MW 11, MW 12 and V W 1 using an 18-inch long split barrel core sampler lined with 2-inch diameter brass sleeves A photo ionization detector (PID) was used to monitor for the presence of volatile organic compounds (VOCs) in the soil Selected soil samples were collected, sealed, labeled, and immediately placed in a pre-cooled ice chest for transport to Argon funder chain of custody protocol The samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg) by EPA Method 801513, benzene, toluene, ethylbenzene and xylenes (BTEX) by EPA Method 802113, and oxygenated gasoline additives by EPA Method 8260B Monitoring Well Construction A Zone wells MW 10, MW 11, and MW 12 were completed in the shallow zone (A Zone) with well screens from approximately 60 to 80 feet below ground surface (bgs) The wells were constructed G IGROUNDZEITULESURGIReports\HSA_Mud wells Report 2 doc