1992-12-11_REVISION - M1977348 ‎(2)‎

• Permit No: M1977348
• IBM Index Class Name: Revision
• Doc Date: 12/11/1992
• Doc Name: Internal memo on reclamation cost estimate and reclamation requirements
• From: DMG
• To: DMG
• Type & Sequence: AM1
• Media Type: D
• Archive: No

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STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
'OF ~O~O
Department of Natural Resources
1313 Sherman SI., Room 215 ~m
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Denver, CO 80203 •
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Phone: [phone] +e~a
FAX: [phone]
Roy Romer
Governor
DATE: December 1 1, 1992 M;~h,ei s. Long,
' Division Director
TO: Berhan Keffelew
FROM: Gregg Squire ~ R ~,
RE: Holnam-Boettcher Quarry, Amendment No. 1, File No. M-77-348 -
Bond Estimate
I have completed the review of the Revegetation and Cost Estimate sections for this
amendment. Attached is the summary of the reclamation bond cost. tf you nelad the "raw
data" worksheets I have kept a set.
Several items need some explanation or discussion:
1) The operator proposed rates for dirt work are reasonable and were used. The
proposed revegetation rate of 5100.00 per acre is below that the Division uses, A
rate of 5770.13/acre for steep slope areas and 5478.00lacre for areas Ic:ss steep
than 3H:1 V was calculated using the Division's computer estimate program for
revegetation work.
2) The proposed seed mix did not include any shrubs or legumes. The operator should
commit to include one pound of pure live seed per acre of Cicer milkvetch-Lutana,
and one-half pound pure live seed per acre of Four wing saltbush (dewirn3ed seed)
to the seed mix. Also the proposed ratio of the grass seed mix in P.L. S./acre
computes out to about 20 seeds per square foot. The Division recommends a rate
of 40 seeds per square foot for drill seeding and this rate should be dout~led for
broadcast seeding. In other words, the proposed rate should be multiplilyd by four if
the seed will be broadcast.
31 Costs for seeding were based on 604 acres of disturbance. If the area to be
seeded is not 604 acres, modifications must be made in the final reclam.3tion bond
total.
4) The operator proposes to cleat the seed in by tracking over the broadcast seed with
a bulldozer. This may be effective but dragging over the seed with a metal mat or
chain or harrowing would probably be more effective and also less expensive.
Cleating does help control erosion and increase soil moisture if the cleat marks are
placed parallel to the contour lines.
5) The operator did not propose to fertilize. In the interest in establishing a quick
cover to control erosion a one shot application should be made. Costs for this were