2004-03-18_REVISION - M1979148

• Permit No: M1979148
• IBM Index Class Name: Revision
• Doc Date: 3/18/2004
• Doc Name: Adequacy Ltr
• From: DMG
• To: Colorado Division of Highways
• Type & Sequence: TR3
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
7373 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
Mazch 18, 2004
Mr. Rex Goodrich
State of Colorado
V col.oRADo
DIVISION OF
MINERALS
GEOLOGY
0.EC LAMATION•MINING
SAf ETY•SCIEN CE
Bill Owens
Governor
Russell George
Department Of TranSpOrtatlOn Executive Direcor
222_,4nut1L6th Street, Rm "i 1'] a„naln w r~n~„y_
Grand Junction, CO 81501 Division Director
Natural Resource Trustee
RE: Myrin Pit, Permit No. M-1979-148
Technical Revision 03-Adequacy Letter
Dear Mr. Goodrich,
The Division of Minerals and Geology received Technical Revision 03 (TR-03) to the Myrin Pit, Permit No. M-
1979-148. The revision request that the 6 to 12 inches of topsoil/overburden replacement be eliminated from the
reclamation plan.
The Division reviewed the soil information included in the original permit application of 1979. According to the
Soil Conservation Service, the soil is described as Perms stomp loam, 0 to 3 (8A) and has a depth of usable topsoil
from 0-8 inches. The range site description (No. 237) states the approximate ground cover of the potential plant
community is 30%. Stones occupy the land surface, but the spaces between them are well filled with plant cover.
The Division concurs that very little topsoil is present for salvage at the Myrin Pit. If no topsoil is available, the
Division recommends that the operator separate the fine material to use as a topsoil substitute. CDOT should
cormnit to screening out any of the fines to use as a topsoil substitute and commit to an overall topsoil
replacement depth to be used during reclamation (for example a range of 2" to 4").
In addition, the seeding mixture and reclamation guidelines set forth in the original 1979 application should be
followed. A copy of the August 10, 1979 Reclamation Guidelines document and January 7, 1991 revised seed
mixture is attached far reference.
The Division's decision due date is set for March 29, 2004. Please respond to the applicable items prior to this
date. If you feel more time is needed to complete your reply, the Division can grant an extension to the decision
date. This will be done upon receipt of a written waiver of your right to a decision by March 29, 2004 and request
for additional time. This must be received no later than the deadline date.
If you have any questions, please do not hesitate to call me at 303-866943.
Sinc y,; ^~
`Erica Crosby ~ `
Environmental Protection S eciai'
Enclosu/re
cc: V Carl Mount; DMG (via e-mail)
Office of Office of Colorado
Mined Land Reclamation Acrive and Inactive Mines Geological Survey