2004-05-13_REVISION - M1977424

• Permit No: M1977424
• IBM Index Class Name: Revision
• Doc Date: 5/13/2004
• Doc Name: Adequacy Response
• From: Western Water & Land Inc
• To: DMG
• Type & Sequence: TR4
• Media Type: D
• Archive: No

May 13 04 05:17p
u
May 13, 2004
Hruce D. Smith
Western Water & Land, Inc. '~
Mr. Steve $huey
Colorado Division ofMinerals and Geology /
Department of Natural Resources
Grand Junction Field Office
101 South Third Street, Room 301
Grand Junction, CO 81501
RE: Monitoring of Research
Technical Revision No. 4
Deaz Steve:
[970] 242-0270
MAY } 3 /

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Mine Portal Seal, Logan Wash Mine~(Permit M-77-424)/
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Western Water & Land, Inc. (W WL), agent for Gknn Springs Holdings, Inc. (GSIin and Occidental
Oil Shale, lnc. (OOSI), has prepared this letter in response to the Division of Minerals and Geology
(DMG) letter of April 15, 2004 which contains a review of W WL's response (April 9's, 2004) to
DMG's response to Technical Revision No. 4 (TR No. 4) wnceming the Research Mine portal seal.
ht previous correspondence, W WL and DMG have discussed and proposed monitoring stipulations for
the Research Mine portal seal. This letter will summarize the key monitoring stipulations including
new stipulations in response to your letter of April 15'".
Monitoring ofthe Research Mine portal seal includes the following:
1. The monitoring period will be from April to December.
2. Monitoring will be conducted on a weekly basis during the monitoring period.
3. Monitoring will be suspended each year after the head behind the seal has peaked and subsided
to zero, under the condition that monitoring is to resume in any given yeaz should conditions
occur that could reasonably result in a significant increase of mine pool head behind the
Research Mine portal seal.
4. DMG is to be notified within 24 hours if seepage is observed from the portrtl seal area or if
head in the mine, as indicated by the manometer gauge outside of the portal, reaches a value of
3.5 feet (1.5 pounds per square inch gauge pressure).
5. Should the observed head in the mine pool indicate a 3.5 ft depth, water will be released from
the mine pool by way of the valve on the existing Crinch diameter discharge pipe inshelled
through the portal seal.
6. Sampling of any discharged water will be in accordance with the Colorado Department of
Public Health and Environment (CDPHE) National Pollution Discharge Elimination System
(NPDES) alsd known as the Colorado Discharge Pemut System
A1~AGrutrons m Earth Socncc 743 Horizon Court Stite 330. Grand luncdon, CO 81506
Phony. (970) 7A2-0170 Fax [phone]