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r <br /> <br />Responses to Staff Questions <br />Page 3 <br />14, WHAT ARE TAILINGS AREAS DAMS/EMBANKMENTS CONSTRUCTED OF? <br />HOW WILL THEY BE STABILIZED? WHAT RUNOFF PROBLEMS/EROSION <br />MAY OCCUR ON THESE FACES? HOW WILL STANDARD METALS HANDLE <br />THIS POTENTIAL PROBLEM? IN ADDITION, WHAT MEASURES WILL <br />STANDARD METALS TAKE TO ENSURE REVEGETATION OF THESE STEEP <br />SLOPES (1:1, 2:1 AND 2.5:1)? <br />Refer to Map 2, footnote, for tailings impoundment <br />methods of Pond 4; all of the inactive pond embankments were <br />constructed with tailings sands to dam the inner slime areas; <br />no foreign earth is/was introduced in either dam develoE~ment; <br />Pond 4 was approved by MESA. Erosion will be controller. by <br />revegetation. Vegetation is currently being grown on test <br />plats on some of the steeper slopes. <br />15. WHAT EQUIPMENT WILL BE UTILIZED IN THE RECLAMATION PLAN <br />AND HOW? <br />Refer to page 18, paragraph 1. <br />16. WHAT AMOUNTS OF PEAT WILL BE SPREAD OVER THE TAILINGS <br />AREAS? <br />The approximate amounts of peat that will be spread <br />over the tailings is: <br />Pond 1: 2,000-3,000 cubic yards <br />Pond 2: 1,000-2,000 cubic yards <br />Pond 4: 3,000-4,000 cubic yards <br /> <br />17. HOW DOES LIGNOSITE (LIGNOSULFONATE) PREVENT PHOTOS)'NTHETIC <br />INHIBITION? <br />Refer to page 17, paragraph 2. <br />18. WHO WILL BE RESPONSIBLE FOR MAINTAINING AREAS THAT WILL <br />BE LEFT AS HISTORICAL SITES? WHAT ALTERNATIVES EX':ST IF <br />THESE AREAS DO NOT DEVELOP AS HISTORICAL SITES AS ]'CANNED? <br />WHAT ACREAGES DO THESE AREAS COMPRISE? <br />A correction in the application should be made ~:oncerning <br />areas designated as future historical sites; these area:a should <br />be considered as potential sellable or usable items fol:Lowing <br />active production from the Silverton operation. <br />19. ADDITIONAL EXPLANATION IS NEEDED WITH REFERENCE TO THE <br />SPECIES LIST OF VEGETATION TO BE UTILIZED IN RECLAMATION <br />EFFORTS. WHAT PRECISE MIXTURES AND RATES ARE INTEI~DED? <br />IT APPEARS THAT THE RATES GIVEN ARE FOR EACH SPECIES AND <br />NOT FOR MIXTURES OF SPECIES. PLEASE CLARIFY. WHA'C SIZE <br />OF SEEDLINGS WILL BE UTILIZED AND WHAT WILL THE SOURCE BE? <br />The Mountain Mix, whose species <br />will be applied at a rate of 20-30 lbs. <br />Alpine Mix will be applied at a rate of <br />The seedlings, obtained from the Soil C <br />Forest Service, are applied in the bare <br />having a height of from 12" to 18". <br />are listed on page 24, <br />per acre, while the <br />15-25 lbs. per acre. <br />~nservation Service and <br />root and potted forms, <br />