1993-03-30_REVISION - M1977378 ‎(2)‎

• Permit No: M1977378
• IBM Index Class Name: Revision
• Doc Date: 3/30/1993
• Doc Name: Evaluation of Hydraulic and Hydrochemical Aspects of Proposed Bulkheads
• From: Sunnyside Gold Corp.
• To: DMG
• Type & Sequence: TR14
• Media Type: D
• Archive: No

Table 7. Estimated Pre-Mine Ground-Water Gradient within the
:Fractured Bedrock
Cement Creek near Portal
of American Tunnel
Discharge Zone near Mogul
Mine Portal
Animas River at Site of Eureka
Eureka Gulch near Midway
Mill Site
Gradient2
Distance' from from head of
Workings under Sunnyside
Elevation' Sunnyside Basin Basin to
(feet msl) (feet) indicated point
10,500 9,500 0.105
11,250 6,300 0.040
9,850 15,600 0.106
10,480 9,300 0.110
1) Estimated from U.S.G.S. Handles Peak and Ironton 7 1 i2 minute quadrangles
2) Assumes the pre-mine hydraulic head in the fractured bedrock beneath Lake Emma was
approximately 11,500 feet above mean sea level (based on the 1959 water-level observation
of Mr. Bob Ward).
Gunn ylwpkraci\ 22511Mar 1993. Rpt
N~1 SII11011 HYDRO-SERRCH