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Mike Smith Engineering, Inc. <br />P.O. Box 611, Lodi, CA 95241 <br />(209) 334-2332 <br />Estimated Closure Costs 11-13-2020 <br />Facility — Wastewater Pretreatment System covered by permit (conditionally authorized — CA) <br />Treatment Provided: <br />1. Oil Removal — API Separator <br />2. Neutralization — mix tanks, mixers, pH probes, chemical metering pumps. <br />3. General — wastewater storage tanks, pumps, piping <br />Closure Procedure <br />Normal operation of the system results in empty tanks at the end of each <br />processing day (i.e. wastes are not accumulated, they are processed daily and <br />hence removed from the system. Thus, closure can be achieved simply by <br />cleaning the tanks, piping and pumps, and since they are all useful process <br />items, leaving the equipment in place. The tanks are all cross linked <br />polyethylene, the piping is PVC and the pumps are plastic or metallic. <br />None of the equipment will absorb any contaminants from the wastewater. <br />Careful rinsing and cleaning will result in fully decontaminated equipment, <br />suitable for use in a number of other processing applications. Therefore, <br />proceed as follows: <br />1. Process all wastewater through the system to the sewer if not already <br />Done. Time allowed — 1 -man day = 8 -man hours <br />2. Empty the caustic and acid storage tanks to trailers and transfer to uses <br />Elsewhere. Triple rinse the tanks, neutralize the rinse water. Estimated time <br />Required — 2 -man days = 16 -man hours <br />3. Rinse the API Separator with hot water and collect all floating oil in the <br />tank provided. Estimated time required — 1 -man day = 8 -man hours <br />4. Process all wastewater through the neutralizers, rinse the tanks and <br />neutralize the rinsate. Discharge to the sewer. Estimated time required — 3 <br />man days = 24 -man hours <br />Total man hours required = 8+16+8+24 = 56 -man hours. <br />Cost at $80/man hours = $4,480.00. <br />Miscellaneous costs for cleaners, equipment, etc. _ $2,600.00 <br />Allowance for disposal of pipe, fittings, equipment, if necessary = $2,200.00 I <br />No. <br />Total closure costs = $9,280.00 * 1-22 <br />�F &I <br />