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f <br />., • ~ III I IIIIII III <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />7 313 Sherman Sl., Room 215 <br />Denver, CO 80207 <br />Phone:(303)866-3567 <br />FAX: 1703) 812-H106 <br />December 4, 1992 <br />Patricia Farnsworth <br />River Bottom Land Corporation <br />1425 4005 Lane <br />Paonia, CO 81428 <br />RE: Adequacy Concerns, River Bottom Pit, River Bottom Land Corporation <br />File No. M-92-100 <br />.Dear Ms. Farnsworth: <br />of corn <br />~~; ° *b <br />„~,e ' O <br />n~ <br />~.~ ^• <br />cave <br />Roy Romer <br />Governor <br />Michael B. Long <br />Division Dvenor <br />As we discussed on the telephone, there are a few lingering concerns regarding <br />the above referenced permit application. Please respond to each concern prior <br />to the December 23, 1992, decision date. <br />Please clarify the details of your proposed mine plan, i.e. will <br />the area of gravel extraction be limited to that area south of the <br />berm indicated on the mine plan map? How will the area south of <br />the berm be accessed from the processing and stockpiling area?. You <br />have previously committed to limiting excavations to removal of <br />gravel bars. The Division concurs that this extraction method will <br />minimize disturbance to the hydrologic balance. <br />2. In addition to the reclamation measures that you have proposed, the <br />Division requests that you commit to preparing the seed bed by <br />ripping to a minimum two foot depth, application of two tons per <br />acres of straw or hay mulch at the time of seeding, and application <br />of fertilizer as needed based on soil analysis at the time of <br />reclamation. In addition to the grass species you have suggested, <br />the Division would like you to add Inland Salt Grass at 4 lbs./ac. <br />P.L.S. broadcast, and Galleta at 8 lbs/ac. P.L.S broadcast. The <br />mulch applied should be crimped into the soil and weeds should be <br />controlled either by mowing or herbicide. <br />3. The following is a summary of the Division's reclamation cost <br />estimate for this site: <br />a> Your estimate of $1,000.00 for site grading is adequate. <br />b) Cost of ripping, seeding, mulching and fertilization is <br />$500.00/acre for a total of $5,000.00. <br />