2008-03-13_PERMIT FILE - C1992081 ‎(4)‎

• Permit No: C1992081
• IBM Index Class Name: Permit File
• Doc Date: 3/13/2008
• Doc Name: Well HGDAL1 Abandonment Report
• Section_Exhibit Name: Tab 07 Appendix 7-4.2
• Media Type: D
• Archive: No

Hydro-Environmental Solutions, Inc.
hydrology, water quality and environmental consulting services
November 7, 2007
Mr. Daniel Hernandez
Colorado Division of Reclamation, Mining and Safety
1313 Sherman Street, Room 215
Denver, CO 80203
Re: Hayden Gulch Loadout, Permit C-92-081
Monitoring Well HGDAL-1 Abandonment
Proof of Compliance
Dear Mr. Hernandez:
In accordance with Rule 4.07.3(3), this letter report has been prepared on behalf of Hayden Gulch
Terminal, Inc. (HGTI) and serves as proof of compliance for abandonment of monitoring well
HGDAL-1 at the Hayden Gulch Loadout, Permit No. C-92-081. The requirements of Rule 4.07.3(3)
are presented in italics, followed by HGTI's response.
(a) Location of drill hole as spotted accurately on a topographic map;
Response: The attached figure, a 1"=400' scale map adapted from an approved PAP exhibit, shows
the location of monitor well HGDAL-1.
De th o drill hole;
(h) P f
Response: The bottom of monitor well HGDAL-1 was 27.6' feet below ground surface.
(c) Surface elevation of drill hole;
Response: The surface elevation of Monitor well HGDAL-1 was at 6,394.6 feet above mean sea
level (amsl).
(d) Intervals where water was encountered during drilling activities;
Response: Monitor well HGDAL-1 was drilled and completed in approximately 1986 by H-G Coal
Company, the previous owner/operator of the Hayden Gulch Loadout. HGTI has been unable to
locate a completion report, that records if, and where water was encountered during drilling, in
internal project files or the Division of Water Resources database. However, historic data indicate
average water levels were approximately 2 - 3 feet below ground surface (elevation of about 6,392
feet amsl). Consequently, HGTI assumes water would have been encountered during drilling
activities within a few feet of the ground surface.
(e) Diameter of drill hole;
Response: As noted above, there is no information about drill hole completion and, consequently,
the diameter is unknown. However, the monitor well was constructed with 2-inch diameter PVC
pipe.
P.O. Box 772996
5710`" Street, Suite B
Steamboat Springs, CO 80477
970-871-6125 * 970-871-6196 (fax)