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15 Decelnher 2000 AGF--N(' Project No. 98-0504 Page 4 of 7 The proposed scope of work will include the following tasks: • Permitting and pre-field work activities: • Sample and analysis with laboratory reporting: • Report preparation. Each of these tasks is described in `;renter detail below. .1 . PIt1=-1 11:f:1) WORK ACTIVITIES Applicable site assessment permits will be obtained from the PHS-EllD. Any necessary City of Stockton encroachment permit will be procured. In addition, an update to the health and safety plan presently on-file will be prepared in accordance with Occnpulional unt] Heallh Gaudczrtcc i1us�ual fur tla=arr.lr�trs H-U%7e ,Sife 1 clivilies (National InstitUte for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1980_ Prior to mohllization, the soil probe boring locations will be clearly larked and a Utlllty clearance obtained through Underr-round Service Alert. �.?. SO 11, SAMPLE COLLECTION AND ANALYSIS Initially, AGE proposes to advance live soil probe borings using direct push technology (DPT) in the vicinity of the foriller I fST system area to evaluate the lateral and vertical extent of the petroleum hvdrocarbon impacts to soil and ground water. Based on the petrolcunl hydrocarbon-impact to soil, AGE proposes soil boring in the Followvin�0 location. Proposed probe boring locations are illustrated in FiL11.11-e ?. • "I v o boring v�ill be advanced to a depth of 60 feet until the field observations and field screening using an organic vapor monitor(OVM) indicate that detectable petroleum vapors are not present in tile soil samples screened trom two consecutive five-toot intervals. These ww'ill be installed at the northern edge ofthe UST excavation to define the -vertical extent of the highest concentrations of MTBF, and petroleum hydrocarbons. A grab 11round water sample will be collected from one of these sail borings. • Hiree other soil borings will be advanced to a depth ol'40 beet bsg, surrounding the l. SI location. 'Vvvo additional <arah ground wyater samples will he collected from these soil horin"s. Advalleed GCC- Nironnx•ntnt,lac.