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designated EPF footprint); onsite relocation; and/or potential disposition at a publically operated <br /> treatment works (POTW). The ultimate water management method selected by VRI shall be <br /> subject to approval/authorization by DRMS prior to initiation of removal (pumping) activities. <br /> On completion of the removal effort VRI will sample the contained water volume (assuming water <br /> management is maintained onsite), with the objective of obtaining a single (i.e., one sample) <br /> representative full-depth profile sample of the water. The sampling effort will be subject to <br /> standard US EPA SW-846 protocols relative to sampling instrument, method, preservation, <br /> holding time, and chain-of-custody. The sample(s) will be submitted to ESC Lab Sciences, Inc. <br /> of Mt. Juliet, Tennessee (the same laboratory utilized by VRI for groundwater monitoring sample <br /> analyses) and analyzed for both pH and the following suite of metals (total concentration): <br /> Aluminum, Arsenic, Barium, Cadmium, Chromium, Copper, Lead, Manganese, Selenium, Silver, <br /> and Zinc (ICP per EPA Method 601013) and Mercury (per EPA Method 7470A). [Note: These <br /> analytical parameters are consistent with those required for the groundwater monitoring wells <br /> associated with the EPF]. Analytical results (standard turn-around basis), will be utilized by VRI <br /> to determine the appropriate ultimate disposition of the water at the conclusion of the CAP <br /> program. <br /> 1.3 Pre-Sorting and Disposition of Deleterious Materials <br /> Prior to initiation of mechanized removal actions, VRI will employ manual labor procedures to <br /> "hand cull" observable and accessible timbers, dimension lumber, scrap steel, spikes/nails, large <br /> and/or jagged rocks, or other potentially deleterious materials from the non-authorized material <br /> zone within the EPF. VRI anticipates that such efforts may extend through the duration of the <br /> removal action if/when such materials are encountered, in order to minimize any further potential <br /> for compromise of the composite liner system. All such materials will be transported to the <br /> staging/stockpile area for interim storage during the performance of the removal action; man- <br /> made materials or similar debris will be separately stored, whereas waste rock materials will be <br /> placed within the waste rock stockpile per Section 1.4, below. <br /> On completion of the removal action, VRI will either selectively sell/dispose of such materials for <br /> scrap value, if any; or,for the greater portion (if not all), dispose of such materials at an authorized <br /> and licensed solid waste management facility (to be determined). Any waste rock materials will <br /> be managed in accordance with procedures defined in Section 1.4, below. <br /> 1.4 Management of Non-Authorized Waste Rock Materials <br /> The "non-authorized" waste rock materials are those materials (inclusive of natural or bank run <br /> weathered rock materials) that were excavated and placed atop the composite liner system, <br /> thereby introducing the DRMS concerns relative to the potential compromise of the liner system <br /> integrity, and resulting in the subject corrective action requirement. These waste rock materials <br /> were derived from direct excavation (carried out using a rubber-tired wheel loader) from the very <br /> same historic waste rock stockpile (and surrounding area) that occupies upper Hukill Gulch <br /> (confined within the designated footprint of the EPF), and which represents a designated "ore" <br /> 4 <br />