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ENVIRONMENT, INC. <br />APRIL 26, 201 O <br />PAGE 6 <br />Attached is a revised Reclamation Cost estimate adding the <br />additional information you requested. This estimate is much <br />higher than originally. presented because of the changes re- <br />garding wet mining. In lieu of the slope backfilling we have <br />decided to change the way those slopes are rebuilt so'they <br />match Option #3 (clay liner) in the adequacy letter. The cost <br />to compact and test the slopes is not much greater than just <br />placing fill,. The material used will be an engineered blend <br />of material available on site in the form of overburden, wash <br />fines and shale. We have also chosen to test the liner as we <br />finish a lake area instead of waiting till the project is done <br />to limit the amount of bond needed. Included is the cost to <br />resoil and revegetate the interior of the lined areas as they <br />may not be filled with water and we have no ability at this <br />time to bond for filling them with water the first time. <br />Pumping costs (State pumping cost is estimated at $300 per acre foot) <br />If the Division's cost to dewater is truly based on .$300 per <br />acre foot no. operator in the state would dewater gravel mines. <br />It would cost over $30,000 to remove the water from an area <br />that is 5.0 acres by 20 feet deep. At 6000 gpm it would take <br />3.77 days coming to nearly $7955/day.. I contacted Rain for <br />Rent in Ft. Lupton and using them to supply a full service, <br />self-contained and serviced pump rig is $5,000 per month or <br />$166.60 per day.. I realize the Division uses a premium in the <br />estimates, but 4772% is a little hard to believe. <br />Dewatering costs (per appropriate unit time such as day, week, month) <br />The cost estimate is based on a recharge rate of 72,300 gpd <br />from our approved SWSP and a pumping rate of.6000 gpm at <br />$5000/month for the entire project.' Please review the revised <br />Reclamation Cost estimate for more detailed information. <br />Removal of structures included in mining plan such as sales office, scale/scale house, conveyor system, <br />and asphalt and concrete plants; Weed Control Plan <br />Typically we find that when the batch plants and support <br />facilities are installed up to 100 yards of concrete are used <br />in the supports for those structures. This material can be <br />backf,illed on•site or used as fish habitat on the bottom of <br />the lakes, so-we have not included a cost to remove-only <br />demolish and dispose. We have also included a cost for reme- <br />dial work on the section of liner completed but not certified <br />at the 20% rate. The cost to perform weed control on the site <br />currently costs between $4000 and $6000 per year. A copy of <br />the weed control plan is attached., <br />Exhibit S - Permanent Man-made Structures (Rule 6.4.19) <br />It appears that agreements are still required for most structures/utilities within 200'. Please provide <br />evidence that the appropriate agreements have been executed/pursued. Copies of letters and certified <br />mailing receipts will be adequate. <br />L.G. Everist, Inc.,.mailed the structure agreements to all <br />owners of structures on or within 200 feet of the permit area <br />on 12/22/09 with the exception of the, oil companies. To date <br />we have had 5 returned, copies attached. Copies of the agree- <br />ment letters and mailing receipts that we mailed for the <br />unreturned agreements are attached to prove they were sent. <br />If we receive additional signed agreements'we will provide