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Former Oasis Mart RAP /CCP <br />Project SP- 09- 003784A <br />November 16, 2009 <br />Page 8 <br />• Braun Intertec will discuss the laboratory analytical tests to characterize the stockpiled soils with <br />Anoka County and the MPCA prior to initiating any laboratory analyses. Potential parameters <br />include GRO by Wisconsin GRO Method, DRO by Wisconsin DRO Method, VOCs by Method SW- <br />846 8260B, PAHs by Method SW -846 8270, and RCRA metals by Method SW -846 6000/7000 <br />series. <br />• The number of soil stockpile samples to be analyzed for selected parameters will be in <br />accordance with the stockpile sampling schedule in Table 5 -1 <br />Table 5 -1: Soil Stockpile Sampling Schedule <br />: ubic Yards of Soil in Stockpile <br />umber of Grab Samples <br />Less than 500 <br />501- 1,000 <br />1,000 or more <br />1 per 100 cubic yards <br />1 per 250 cubic yards <br />1 per 500 cubic yards <br />5.2. Confirmation Soil Sampling for Unexpected Contamination <br />If contaminated soils (based on visual, olfactory, or headspace /PID indications of contamination) are <br />encountered and excavated that are different from those described in the RAP, confirmation soil <br />samples will be collected from the excavation base and sidewalis in the area of contaminated soil after <br />the contaminated soil is removed. The number of samples will be based on Table 4 -1 and the <br />parameters will be selected based on the results of the characterization samples discussed in Section <br />5.1. Braun Intertec will discuss specific confirmation sampling tests for unexpected impacts with Anoka <br />County and the MPCA prior to initiating any laboratory analyses. <br />Routine Braun Intertec laboratory quality assurance /quality control will be followed. <br />5.3. Soil Stockpile Management <br />Stockpiled soils suspected to be contaminated will be placed in a staging area of the construction site. <br />Stockpiled soils suspected to be contaminated will be placed on polyethylene sheeting, or an <br />impermeable surface such as asphalt or concrete, and covered with polyethylene sheeting at the end of <br />each workday and will be secured in place. The stockpile(s) will be bermed, if necessary, to prevent <br />stormwater run -on and /or runoff. <br />