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05/21/01 MON 12:45 FA% 54168250x2 EtiG PUBLIC WORKS <br />y <br />with a truck mounted Model 5400 Geoprobe° and the collection of soil and <br />~, groundwater samples for laboratory analysis. The soil samples will be analyzed <br />for TPH identification using Northwest Methods NWTPH-HCID. Based upon the <br />results of the NWTPH-HCID analysis, soil samples wilt be quantified by <br />Northwest Method NWTPH-Gx (gasoline) and/or NWTPH-Dx (diesel or tube oil) <br />as required. Groundwater samples will be analyzed for VOCs using EPA <br />Method 8260 and for PAH compounds using DEQ Method GC/MS SIM <br />(modified EPA Method 8270-. <br />3. Subsurface conditions adjacent to the two (2) circular areas in the parking lot <br />should be investigated by the installation of macro core push probes completed <br />with a truck mounted Model 5400 Geoprobe° and the collection of soil and <br />groundwater samples for laboratory analysis. The soil samples will be analyzed <br />for TPH identification using Northwest Methods NWTPH-HCID, Based upon the <br />results of the NWTPH-HCID analysis, soil samples will be quantified by <br />Northwest Method NWTPH-Gx (gasoline) and/or NWTPH-Dx (diesel or lobe oil) <br />as required. Groundwater samples will be analyzed for VOCs using EPA <br />Method 8260 and for PAH compounds using DEQ Method GC/MS SIM <br />(modified EPA Method 8270). <br />The wood planks from the north circular area should be removed to investigate <br />the structure and/or contents of the circular area. <br />A cost estimate to perform the recommended Level II activities is presented below. <br />C05T ESTIMATE; <br />1.0 Geoprobe Investigative Services: $ 1 ,450.00 <br />2.0 Site Investigation and Sample Analysis: <br />2,1 Site Investigation $ 765.00 <br />2.2 Groundwater Sampling S 300.00 <br />Laboratory Analysis: <br />Soil Samples <br />6 -TPH-HCID $ 450.00 <br />6 -TPH-Gx or TPH-Dx (if required) $ 570.00 <br />f~ 005 <br />NEAGESON-BOESE 6 ASBOOIA7E8, MC. <br />'~ SGOPE OF WORK - COEta~VZ.01 E <br />MAY 18, 200) Page 5 <br />