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of protectiveness, therefore, excavation or treatment does not appear to be warranted and from <br /> this perspective the associated costs are unjustifiable. <br /> Moreover, implementation of either of the recommended options would be in compliance with <br /> applicable laws and regulations and would be in harmony with current regulatory policy which <br /> emphasizes an objective analysis of benefit and cost effectiveness in the selection of remedies. <br /> 10.0 SELECTED ALTERNATIVE <br /> Because of its additional protectiveness relative to No Action, the Capping Option is the <br /> alternative selected for adoption and implementation. <br /> 10.1 Site Capping <br /> This option will isolate the lead from the atmosphere thus preventing human exposure to the <br /> material and minimizing leaching due to rainfall. The affected area will be graded to di=t <br /> runoff away from the site building and paved with a multilayer asphalt cap. <br /> 11,0 WORKPLAN: SITE CAPPING <br /> 1.1.1 Introduction <br /> Implementation of the remedy will require selection of contractors, detailed design, grading and <br /> paving. The contractors will be selected by competitive bidding and qualifications. The sections <br /> below provide more detail on the implementation procedure. <br /> 11..2 Design and Permitting <br /> Ground Zero will physically delineate the area to be paved. Prior to initiating the work, the <br /> selected grading/paving contractor will inspect the site in order to agree upon coordination and <br /> scheduling of the work, identify any potential difficulties and specify the finished grade and <br /> slope. At the recommendation of the contractor, a topographic survey may be required to <br /> delineate the finished slope and grade. Underground Service Alert (USA) will be notified in <br /> order to identify underground utilities. A private utility locator may be employed, as necessary, <br /> to identify private utility services not located by USA. Construction permits will be obtained <br /> as necessary. <br /> 11.3 Grading and Drainage Controls <br /> In order to prevent ponding on the paved surface it will be necessary to slope the treated area <br /> in such a manner that surface runoff is directed away from the shop building and towards Miner <br /> Avenue. Grading will be accomplished according to the contractor's specifications. <br /> roy�lrapon•\ vo.,pe 9 <br /> 2Td WU87:0T 866T LT .unr 2686 828 60C : TN BNOHd sts6jeud oaaz purouo WOdd <br />