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Former Oasis Mart RAP /CCP <br />Project SP- 09- 003784A <br />November 16, 2009 <br />Page 5 <br />Based on the previous reuse of soil with residual petroleum contamination and the former LUST faclity <br />at the site, it is likely PCS will be encountered during demolition activities. <br />4.3 Confirmation Testing <br />Based on the soil impacts identified during the previous UST system work and during the LSI, we <br />anticipate collecting up to 3 confirmation /disposal samples during demolition activities ; however, the <br />number of samples collected may change based on field conditions. Soil samples will be analyzed at the <br />Braun Intertec Laboratory for the following parameters: <br />• PVOCs using Wisconsin Department of Natural Resources (WDNR) methods. The WDNR PVOC <br />method was chosen so that 1,2,4 - Trimethylbenzene, which was detected during the UST <br />removal effort, would be reported. <br />• GRO using WDNR methods <br />• DRO using WDNR methods <br />If PID readings exceed 10 parts per million (ppm) and /or other types of contamination are observed as <br />discussed in the CCP described below (Section 5.0), soil samples will be collected and analyzed both for <br />characterization /disposal purposes and for cleanup confirmation. The number of confirmation soil <br />samples will be collected as shown in Table 4 -1. <br />Table 4 -1. Confirmation Sampling Schedule <br />Area o i xcavation F <br />f loor <br />(square feet <br />Less than 500 <br />500 -1,000 <br />1,000 - 1,500 <br />1,500 - 2,500 <br />2,500 - 4,000 <br />4,000 - 6,000 <br />6,000 - 8,500 <br />umber of <br />Samples <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />rea of Excavation <br />idewall (square feet);; <br />Less than 500 <br />500 -1,000 <br />1,000 -1,500 <br />1,500 - 2,0 00 <br />2,000 - 3,000 <br />3,000 - 4,000 <br />4,000 <br />u;rnber of - Grab <br />Samples, <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />8 <br />1/45 lineal feet <br />