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REV09912
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REV09912
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Entry Properties
Last modified
8/25/2016 1:10:22 AM
Creation date
11/21/2007 10:08:29 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1988112
IBM Index Class Name
Revision
Doc Date
10/18/1999
Doc Name
DIVERSION CHANNEL DESIGN CHANGES SAN LUIS PROJECT PN M-88-112
From
SHEPHERD MILLER
To
DMG
Type & Sequence
TR26
Media Type
D
Archive
No
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~ III IIIIIIIIIIIIIIII ~ <br />SHEPHERD MILLER <br />October 18, 1999 ~'vE~SMI #100267 <br />Ui. 1999 <br />tiJi`ion o1 t: ~ • +~ Geology <br />Mr. James Dillie <br />Colorado Division of Minerals & Geology <br />1313 Sherman, Room 215 <br />Denver, Colorado 80203 <br />Subject: Diversion Channel Desigu Changes, San Luis Project, Costilla Colmty, Colorado <br />Dear Mr. Dillies <br />Pursuant to our phone conversation of Friday, October 15, this letter documents two agreed upon <br />changes to the diversion channel designs presented in "Final Diversion Channel Design in the <br />East Pit Area, San Luis Project, Costilla County, Colorado" submitted by Bnttle Mountain <br />Resources. Inc. (BMRI) on October 7, 1999. The two changes are: <br />1. Segments 1 and 2: impermeable lining material will be geosynthetic clay liner (GCL) <br />instead of the originally specified HDPE; <br />2. Segments 12 and 18: erosion protection will consist of grouted riprap as opposed [o <br />the originally specified rock-filled gabion baskets. <br />If you have any questions, please contact me at (970) 223-9600 or Mr. Ron Zumwalt of BMRI at <br />(719) 672-4122. <br />Sincerely, <br />SHEPHERD MILLER, INC. <br />~~~~. ~ <br />Daniel L. Evans, P.E. <br />Water Resources Engineer <br />cc: Ron Zumwalt, BMRI Maria Mondragon-Valdez <br />Dean Massey Roger Flynn <br />Bill Lyle, BMG Mike McGowan <br />Lori Potter Dan Randolph <br />£nuiranmrnta( [1 Enginrrring Comultantr <br />3801 Automannn Way, Suite 100 <br />Fort Collins. CO 80525 <br />Phone: (970)223-9600 <br />Fax: (970)223-7171 <br />
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