1994-09-19_HYDROLOGY - M1977378

• Permit No: M1977378
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/19/1994
• Doc Name: Tracer Inoculation
• From: Sunnyside Gold Corp
• To: CDHE-WQCD
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

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999
St?i1 NYSIDE GOLD CORPORATION
AN ECHO DAY COMPANY
P.O. Box 177 .Silverton, CO 81433
Phone [phone] .Telecopy [phone] �'
v \
September 14 , 1994 ,
Patricia A. Nelson, Industrial Unit Chief '
Permits and Enforcement
/IColorado Department of Health and Environment
WQCD-PE-B2
4300 Cherry Creek South Drive
Denver , CO 80222-1530
RE: CDPS No. CO-0027529 and CDPS No. CO-0036056
acer Inoculation of the Sunnyside Mine
Dear Ms. Nelson: � V
r
This letter is to submit an additional tracer study report and to
request an official position from the Colorado Department of Public
Health and Environment (CDPHE) on the introduction of a tracer
(bromide) into the Sunnyside Mine. This definition of the CDPHE
position is needed to identify any potential liability that
Sunnyside Gold Corporation (SGC) is risking for introducing the
tracer , to define any potential conflicts with SGC'c commitment to
the Division of Minerals and Geology (DMG) to introduce the tracer
and to determine whether the tracer will satisfy any CDPHE
concerns. If any potential liabilities or conflicts are defined,
SGC will attempt to resolve them so that CDPHE , DMG and SGC are all
in agreement on the use of the bromide tracer .
The official/unofficial positions of the parties, as I understand
them from meetings and correspondence, are discussed below.
DMG - The DMG requested a feasibility study on the use of a
tracer as part of the Technical Revision process. The
use of bromide as a tracer was reviewed as submitted by
SGC and accepted . Tracer inoculation and monitoring is
an integral component of the DMG ' s approved program to
evaluate the relative success of the bulkheads.
CDPHE - The CDPHE has not taken an official position on the use
of the tracer , although two reservations have been
expressed. These reservations in order of concern are;
1) that the tracer will not work ( ie. the tracer will
disappear through settling, ion exchange , absorption,
adsorption, precipitation, etc . ) and 2) bromide may have
adverse effects on aquatic life in the receiving streams.