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<br />ROY R. CELLAN
<br />Corpoare Manager
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<br />July 1 s, 2001
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<br />State of Colorado
<br />Division of Minerals and Geology
<br />Durango Field Office
<br />701 Camino Del Rio, Room 125
<br />Durango, CO 81301
<br />BIY/5101! of NAiReinr: ~,,,,,
<br />Attn: Mr. Steve S. Shuey, Reclamation Specialist
<br />RE: Bulldog Mine Reclamation Project
<br />June, 2001 Monthly Monitoring Report
<br />Dear Mr. Shuey:
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<br />ENVIRONMENTAL, HEALTH, SAFETV
<br />AND GOVERNMENT AFFAIRS
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<br />Pursuant to the Technical Revisions to the Reclamation Permit for the Bulldog Reclamation
<br />Project, this is the forty third monthly report pertaining to 11 installation and operation of an
<br />infiltration trench to accommodate seepage from the 9360 adit, and 21 closing the valve at the
<br />9360 adit plug. The Division of Minerals and Geology (DMGI, in a letter dated March 8, 1999,
<br />issued a conditional approval for Homestake Mining Company (HMC) to close the valve at the
<br />9360 adit plug. Subsequent to DMG's approval, HMC closed the valve to the adit plug on April
<br />1, 1999. Since closure of the adit plug valve, no flow has been directed into the infiltration
<br />trench. Monitoring of the hydraulic conditions behind the adit plug indicated that as of August
<br />25, 1999, conditions had stabilized lie pressure measurements stabilizedl. As a result, DMG
<br />approved initiation of the planned tracer test (Ref: Letter from WMCI to Mr. Steve Shuey, dated
<br />August 27, 19991• The tracer test subsequently began on September 9, 1999. With the
<br />initiation of the tracer test, HMC is committed to the monitoring summarized in Table 1 in
<br />accordance with the approved Technical Revisions.
<br />The revised monitoring program was initiated in September 1999. A summary of the monthly
<br />monitoring data is presented in Table 2. Based on the required visual inspection around the adit
<br />plug, the plug is impounding water behind it with no signs of seepage and/or development of
<br />seeps around the portal area. A pressure measurement and visual observation was completed of
<br />the 9360 adit plug and portal on June 14, 2001 and recorded in Tablo 3. In accordance with the
<br />approved monitoring schedule (Table 11, water samples for tracer analysis (WGLW and 9700W1
<br />were taken on June 14, 2001. Analytical data for these samples are attached.
<br />As part of this monthly report and in accordance with the 9360 Level Adit Closure Monitoring
<br />Plan, dated April 1998, Windy Gulch monitoring was continued during this period. Water levels in
<br />the Creede Formation Well, located upslope of the 9360 Adit, have been recorded continuously
<br />since its installation, and data for the last year are presented graphically in Figure 1. Flow data for
<br />the WGL Weir has been recorded continuously with an automated datalogger since April 17,
<br />2001. Flow data for the WGL Weir are presented in Figure 2. A water quality sample (WGL Weir)
<br />was taken on June 14, 2001. The analytical results for this sample are attached.
<br />HOMESTAKE MINING COMPANY
<br />PO BO%9B ~ GRANTS. NM B]020 OOt 1
<br />
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