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REP25204
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REP25204
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Entry Properties
Last modified
8/24/2016 11:56:52 PM
Creation date
11/27/2007 4:08:55 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977215
IBM Index Class Name
Report
Doc Date
12/20/1995
Doc Name
MILL TAILING LEACHTE STUDY HOMESTAKE MINING CO BULLDOG MINE RECLAMATION PN M-77-215 CDPS PN CO-710
From
DMG
To
WQCD
Media Type
D
Archive
No
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<br />(Page 2) <br /> <br />MINE ID ~ OR PROSPECTING ID ~ M-77-215 <br />INSPECTION DATE 9/11/95 INSPECTOR'S INITIALS ACS <br />OBSERVATIONS <br />This inspection was conducted to collect samples of tailing solids from both the upper and <br />lower tailing impoundments. Both samples are to be subjected to a single contact batch <br />leachability test, with the leachate analyzed for major ion chemistry and a selected set of <br />heavy metals. The tailing sample from the lower pond will be further subjected to a <br />sequential batch leachability teat comprised of multiple sequential contacts between liquids <br />and solids. <br />It has been the intention of both the Division and Homeetake to meet and discuss the statue <br />of the Bulldog Hine given the nature of the Declaratory Order issued by the Mined Land <br />Reclamation Board on 8/24/95. It ie the Division's view that having the results of the <br />tailing leachability testing and analysis will facilitate the discussions during the proposed <br />meeting. Once the results are available (reportedly during the week of 10/9/95) the Division <br />will contact Homeetake to set up a meeting. <br />The following describes the sampling procedures: <br />LOWER TAILING POND <br />Reclamation of the lower tailings ie by direct revegetation. No soil or clay cap has been <br />applied, and tailing material ie exposed at the ground surface. Excavated a pit into tailing <br />at the lower tailing impoundment. The pit was located near the east-west center of the <br />impoundment, approximately 150 feet (measured by pacing) from the tailing/embankment fill <br />interface. Used a clean shovel to excavate to approximately 3 foot depth, then filled a new <br />plastic, 5-gallon pail to approximately 1/2 full. Excavated a second, similar pit <br />approximately 225 feet (measured by pacing) from the tailing/embankment fill interface, and <br />finished filling the 5-gallon pail from this second pit. The pail was securely capped and <br />marked with sample I.D. M-77-215-L. <br />UPPER TAILING POND <br />The sampling shovel was thoroughly cleaned using distilled water. Fill dirt has been spread <br />over tailing in moat locations in the upper impoundment in order to provide positive drainage <br />to the tailing dam breach located at the southwest corner of the impoundment. Attempted to <br />excavate through the fill dirt to tailing at a location near the geographic center of the <br />pond, but after approximately 3 feet of difficult digging in rocky material, this location <br />was backfilled and abandoned. An area where tailing is exposed at the surface was located <br />near the dam breach. A pit approximately 2 feet deep was excavated, and then a new 5-gallon <br />plastic pail was filled with tailing. The pail was securely capped and marked with sample <br />I.D. M-77-215-U. <br />Attached to this report are the Division's internal sampling forme. <br />CHAIN OF CUSTODY <br />Both samples (M-77-215-U and H-77-215-L) were delivered to David McWharter of Chemac <br />Environmental Services at approximately 17:45 on 9-11-95. The samples were in continuous <br />possession of the sampler until delivered to Mr. McWharter. <br />cc: Steve Shuey, DMG - Durango <br />Harry Posey, DMG <br />I & E Contact Address <br /> ^ CE <br />NAME Alan D. Cox ^ BL <br />OPERATOR Homeetake Mining Company ^ FS <br />STREET 650 California Street ^ HW <br />CITY/STATE/ZIP San Francisco. CA 94108 ^ HMWMD (CH) <br /> ^ SE <br /> ^ WQCD (CH) <br /> ^ OTHER <br />
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