1625 BROADWAY 2016-01-01 MF Import

------ --- i --- . --- ------ h� KI [INFELD [R ' em�ironmental issues ��ere identified in the previous em�ironmental reports, ��'hich included the follo�ving items: � . Remo��al and offsite disposal of a hvo inactive heating USTs, . Removal and offsite disposal a concrete sump, sludge and approximately 10 tons of � neazby soils, . Removal and offsite disposal of a�i abandoned sleel pipe containing petroleum impacted � materials and neazby soils; . Removal and offsite disposa] of approx!mately 18 tons of petroleum-stained shallow soil. fOur review of Kane �nviromnenlal UST Closure Report indicates that the environmental issucs identified in November 2000 liave been adequntely addressed. In addition, Kleinfcldcr's more ' recent Pliase I update did not re��ealed evidence of additional recognized environmcnlal issucs 1 associated with the subject property. � The Limited Phase II soil-sampling program was conducted in conjunction ��'iUi ilie geoteclmical investigation a��d designed to provide additional baseline enviromnental data on ilie subjcct � properi}'. No evidence of petroleum-stained soils or elevated PID readings «'as noted durinc thc soil drilling activitics. Two representative soil samples from each Uorehole were collected and � tested for peuoleum hydrocarbons. Anal)Kical resulu did not detect the presence of petroleum hydrocarbons above Ecology's D9TCA AQeil�od A cleanup levels. Ho��ever, soil samples B-3-3 � (640 mg/kc) and B-4-2 (440 mg/kg) contained low levels of TPH (as hea�y oil), which are bclo�v the A�ITCA Method A cleanup level of 2,000 mg/kg. These t��o soil samples ��ere collcctcd at ]0 � feet bgs in the fill material of thc former Manufacturing Building. We understand ihat the fill material roay have contained crushed concrete a�id other debris from � the fonner concrete basement and foundations associated with the n4a�iuiacturing Building. \�'c further understand that the conswction of the proposed Safe��ay Pueling Center will include � excavation into il�e fill material for placement of shallow foundations associated �vith the canopy and pump dispensers islands. Although the TPH concentrations detected in the fill material is I below the MTCA Method A cleanup level of 2,000 mr,,/!'.g, it may prove prudent to dispose of the excavated fill material as Class II soils at the nearby Rinl:er lo�v temperature thermal treatment facility in Everett, Wash�ngton. \Ve recommend that a Kleinfelder field representative be ' retained to confirm the geoteclmical properiies of soil beneath proposed foundations as ��ell as screen ihe excavated fill material for the presence of TPH vid, if necessary, document the � i ��s�v or i i 433GO�SC:A4R046.doc I� Cop}ri�ht=004}:leinfcldcr Inc.