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� -- — -- -------- - — h� KLEINFELDER <br /> ■ Representati�•e soil samples ���ere collected at �-foot intcrvals throughout the length of the <br /> � boreholes. Tlie borings ���ere extended to deptlis ranging from 20 feet to 25 feet bgs. A qualificd <br /> Kleinfelder geologist was present during the drilling and soil sampling to observe and document <br /> soil conditions. No gtoundwater was encountered during drilling. A11 soil samples «�erc visually <br /> � oUsemed for identifiable signs of petroleum-related contamination and screened for the presence <br /> of volatile organic compounds (VOCs) using a photo-ionization dctector (PID). Afler geologic <br /> � logging, selected soil samples �vere placed into sterile jars, labeled, and placed into a clillled <br /> cooler for transport to the anal}Kical laboratory for chemical analysis. The sampling equipmcnt <br /> � was deconta�ninated �vith Alconox and douUle rinsed after collecting each sample. A total of <br /> eight soil samples were submitted to �SN N\'��, Inc., a �Vashiugton State-certified laboratory, for <br /> � petroleum hydrocarbon identification using the Ecology specified Method NWTPI-T-HCID. <br /> Soil samples B-1-2, B-2-2, B-3-2, and B-4-2 werc collected at 10 feet bgs. Soil sample B-1-� <br /> � was collected at 25 fcet Ugs. Soil samples B-2-4, B-3-4, and B-4-�3 were collected at 20 fcet Ugs. <br /> TPH (as heavy oil) was detected in soil samples B-3-2 a�id 8-4-2 wiiliin the portion oC the <br /> � property that contained till material. Ba�ed on the NP✓TPH-HCID resulls, soil sa�nples B-3-2 <br /> and B-4-2 �vere analyzed for TPH (as diesel and neavy oil) using the Ecology D4ethod NWTPH- <br /> Dx (Table 2). Soil samples B-3-2 and B-4-2 contained TPH (as hea�ry oil) concentrations of 640 <br /> � mg/kg and 440 mg/kg, respectivel��. These concentrations are below Ecology's A(TCA \lethod <br /> A soil cleanup level of 2,000 mg/k�. <br /> � Although no documentation regarding demolition of the nfanufacturing Building �+ns a�•ailaUlc <br /> � for Kleinfelder's review, it appears soil sa�nples B-3-2 a�id B-4-2 �vere collected �vithin t!�e fill <br /> material of ihe former D�anufacturing 13uilding. Duc to lithologic desrription of the matcrials <br /> encountered at the depth of 10 feet in botli borings (silty 3and mi�ed cvilh construction deLris <br /> ( such as bricks, ���ood), elevated concentrations of TPH (as heavy oill in boili samples may bc <br /> associated with the residual levels of petroleum hydrocarbons in the fill material. Copics of thc <br /> � Laboratory Anal�-tical Reporis and Chain-of Custody 1=omis are presented in :�ppendi� C. <br /> 1 8.0 CONCLliSIONS AND R�COAIDIENDATIO\'S <br /> This Phase I ESA update and Limited Phzse II subsurface soil characterization �scre perfonned as <br /> I �art of the proposed Safe�vay Fuel Center located at the northeast comer of the intersection of <br /> 17'� Street and Broad�;�ay A��enue in I:��crett, �4�ashington. 71ie Phase I update ���as performed in <br /> � ccn�r.�l a�nl��nn:ncc ��;ith thc srnpc arnl limit:tions of :1S'I�'�1 Practicc L--1��7-OQ Sc�'�ral <br /> �s,� ii <br /> G��in�h;=Ci i 1 Klunfd.i�_r Inc_ � <br /> IO <br />