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+� ATC %adC <br /> ASSOCIATES INC . <br /> SP-4)were advanced in the immediate vicinity of the former UST. Analytical results indicated <br /> that sorb imps with petroleum hydrocarbons extended to approximately 28 feet below pumd <br /> surface-(bgs). The;approximate locations of the former LIST and soil borings are shown on <br /> Figure 2. <br /> On July 20, 1998, Advanced GedEnvironmental Inc. (AGE) Supervised the advancement of one <br /> soil boring(11M-1)through.:* UST excavation to a depth of 65 feetbgs. The boring <br /> was completed as a two='uoh diameter monitoring well screened from 45 to 65 feet bgs <br /> Analytical results of soil samples indicated the presence of petroleum hydrocarbons at 20 feet bgs <br /> but the impacted soil appeared to attenuate rapidly with depth. The monitoring well was <br /> moped and a groundwater sample was collected from the well. Analytical results indicated the <br /> presence of petroleum hydrocarbons. Results are summarized in AGWs Quxurly Report-,duly <br /> 1998. <br /> SCOPE DF WORK <br /> Win itid Peemlts <br /> ATS has completed the well installation permitapplication for the proposed subsur . <br /> investigation.... The permit application and associated fees (check no;. 99) are attached to this <br /> workplan. ATC will also schedule field personnel and equipment, notify UtpdiWound Services: <br /> Alert to locate underground. utilities as required, and perform any <br /> other necessary field. <br /> preparation and job start-up activities.. <br /> Installation of`Soil Bgdogs and MoW +iron Wells <br /> The KM borings will be advanced using a hollow stem auger equipped drill rig to depths of <br /> approaunately <br /> :50*d bgs:. Drift wilt be conducted by a State licensed(01)dolling eomp0ly <br /> Ths soil samples Oom the two ,roil borings will be collected at five-faint intervals or sigroil+cauyt <br /> changes in lithology: A field.g00logist will be present to log all drill cuttings and soil samples. <br /> Ewh wil Sample will be field screened with a'Photoionization Detection (PID) meter or similar <br /> instrument and at least two samples 'fi�am each boring, based onfl eld obsevatiorts. (i.e. +Cdor, <br /> discoloration;`PID readiings), will be placed in a cooler with ice and submitted for labomtorry <br /> analysis. <br /> Placeintot tBorings and Wells <br /> To evaluate the.extent of soil.and:groundwater contaminationin'the area of the former'UST,two <br /> soil borings will be advanced to approximately 50 feet below ground surface (b8s). One`orm8 <br /> will be low.near#fie northwest comer of the fire station building and one boring will be located <br /> east ofthe:fire station building. The estimated groundwater flow direction is to the northeast <br /> based:oft..8 ';gradient-data from nearby sites, the groundwater da4 from the Lines of <br /> ,v Q57+1:0sYapotWW&p v&" <br />