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K. Holder <br />Tanuary 28, 2002 <br />Waite Management Con ' zenov Plan <br />Page 3 of 3 <br />The WMCP has been developed by FMM to guide waste management practices during the Saud sad gravel <br />muting. The'WCMP is currently under revisiott and must be resubmitted to the Division for final approval prior <br />to start of earth-moving activities is Subarea 3. The following items must be included in the final WMCP as a <br />result of this investigation: <br />• A detailed play must be included for the management and disposal ofhydrocarbon-contaminated soils <br />presettt in the overburden is the northern half of Subarea 3. The soils include those within the shaded <br />area Shawn in Attachment I, firom ground surface to the water table {approximately 6 feet in depth, <br />gading to about 12-14 feet deep moving northward). Since SVOC results were inconclusive,. a threshold <br />of 500 mg/kg TPT3 has been used to approximate this area. This represents the minimum estimated area to <br />be addressed, while the actual area and depth of soils to be removed shall be guided in the field by visual <br />insgesds~ o€tl~ se#1 feF blaolFSta~ing, eta., as excaeatioa proceeds. trog sci'i s~tes'ftiY <br />laboratory analysis may be necessary. <br />Management and disposal of this material moat be conducted in accordance with ail applioable State solid <br />waste regulations. Proposed disposal options must include a specific time Exams fox completion, attd any <br />temporary storage of the excavated material moat address nuisance control for dust and odors and <br />pzeveation of surface waterrunonhunoff. <br />• Groundwater pumped during mining dewatering will ba discharged to a sedimentation basic prior to <br />discharge to the Colorado River. Water quality will be regulated under Colorado Discharge Permit <br />System (GDPS) Fem'dt Number CO-OD46175 issued for the site. This permit must be incorporated into <br />• Monitoring of proposed well MW-4, as discussed above, moat be added to the plan. <br />Please don't hesitate to caU me at (303) 692.3376 if you have any questions regarding this letter. <br />Sincerely, <br />~~~ <br />~ . <br />Hazardous Waste Corrective Action Unit <br />Compliance Program <br />Attachment <br />cc; David Kreutzer -Colorado AGO <br />$lizabeth Rowan -Mesa County Administration <br />Bennett Boeschenstein -City of Fruits <br />Donna`Stoner - CDPHE/:[IIvlWNID <br />8i11 Rothenmeyer - L15$PA <br />Matt Sura - Western Colorado Congress <br />