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.. KLEINFELDER PURPOSE This assessment was conducted as a screening level survey to evaluate the potential for contaminants to leach from concrete tile material used in the parking lot aggregate base and impact the subsurface at the site. PRE-FIELD ACTIVITIES On January 18, 2005 Mr. Fran Bean, Kleinfelder Staff Geologist, met with Ms. Margaret Laiorrio of the EHD to insure that the permitting requirements of EHD were met. The conclusion of that meeting was that a boring permit would not be required for the soil assessment ., as long as the shallow sample locations were accessed with a shovel and that EHD review of the assessment would require the submittal of a Service Request form and associated fee along with the Phase II soil assessment report. FIELD ACTIVITIES On February 2, 2005, three soil samples were collected from six locations (L1 through L5 and BGI) on the approximately 115,000 square foot lot used for truck trailer parking. The locations (LI through L5) were randomly located throughout the lot in order to obtain representative samples of the site. The lot is covered with a base containing a mixture of gravels, cobbles, and pieces of crushed concrete roof tile. The pieces of concrete roof tile was estimated at approximately 25% of the base material in the locations from which samples were collected. The ` thickness of the base ranged from approximately six to nine inches, beneath which was transition zone including soil with intermittent cobbles and concrete h e pieces estimated at a th;rknecc of c;v inrhen The shallowest soil samples were collected at the interface between the two zones (Samples Ll-0" through L5-0"). Background samples were collected from a location (BGI) along the southwest perimeter of the site, where a trace amount of base material was noted ` scattered on the surface. In each sample location a cleaned shovel was used to dig to approximately two inches above the desired sampling depth. A stainless steel hand auger was then used to remove approximately two inches of soil to insure the samples co eca represented the desired depths. Three samp es were collected from each location(Ll through L5 an ) a 1t approximate depths of 0 to 6, 12 to 18, and 30 to 36-inches below the parking lot base. One parent material sample(LI-PM)was collected from location Ll. The parent material was collected directly from the parking lot base. A sample (Ll-PM) of the base was collected at location Ll using a cleaned shovel. As the base contained abundant cobbles and gravels, pieces of concrete rile were manually selected from the base and placed in a plastic bag for the rinseate anal sis of the concrete tile. ~ Soil samples were obtained by slide hammering a 2-inch diameter by 6-inch long stainless steel tube into the soil at the desired sampling depth. The stainless steel tube was then removed from the boring and sealed with Teflon sheeting and tight-fitting plastic end caps. The samples were ~ immediately stored in an iced cooler. The samples were transported under chain-of-custody 52495.EOI/ST05R268/FB:Iv Page 2 of 6 ,� ®2005,Klemfelder,Inc. March 8,2005