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IIIIIIIIIIIIIIIIIII • STATE OF COLORADO <br />DIY1510N OF MINERALS AND GEOLOGY <br />Dcparlmem of Nalu ml Resources <br />Li l3 Sharman 51.. Runm ?I S J <br />y <br /> <br />Donver, Coloridu RU?m FACSIMILE <br />WITH HARD COPY TO l <br />~~ <br />FOLLOW <br /> <br />Phunr.: (1071 R66~3567 II <br />FAY: 13031 RB _'~fl I0L <br />February 13, 1998 DEPARTMENT OF <br /> NATURAL <br />Mr. Jeff Gregg RESOURCES <br />Hall-Irwin Sand & Gravel Roy Romer <br />P . O . BOX 519 Governor <br />Greele CO 80632 <br />y Wmes S. LOChhead <br />, Errmtioe Director <br />michael B Long <br />Din lion Director <br />RE: Baseline Resource, File No. M-97-058 <br />Slurry Wall Quotation <br />Dear Mr. Gregg: <br />The Division of Minerals and Geology (DMG) received your quotation <br />for slurry wall construction on February 6, 1998. Please provide <br />the following information. <br />1. A description of all equipment used in the slurry wall <br />installation. <br />2. We do not have equipment specifications, cycle time, and <br />hourly cost summaries for the large hydraulic excavator you <br />plan to use. Please provide the ownership cost per hour, operating <br />and overhaul cost per hour, operator cost per hour, horsepower, <br />weight, basic cycle time, rated bucket capacity, bucket fill factor, <br />and bucket size class for the excavator. <br />3. A breakdown of mobilization costs for each piece of equipment, <br />including the number of pilot cars, trailers and sizes, etc. <br />4. Width of the trench, method of excavation, composition of slurry, and <br />source and unit cost of slurry material. <br />5. Composition and source of components of clay plug material. <br />6. Installation method for both the slurry and clay plug. <br />7. Testing and quality control method. <br />Please call me if you have any questions. <br />Sincerely, <br />~- g ~ ~~~ ~ <br />Gary Curtiss <br />Environmental Protection Specialist <br />cc:Carl Mount, DMG <br />Allen Sorenson, DMG <br />c:\97058bnd.wpd <br />< _ J <br />