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2010-07-27_PERMIT FILE - M2009076 (23)
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2010-07-27_PERMIT FILE - M2009076 (23)
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Last modified
8/24/2016 4:16:50 PM
Creation date
7/29/2010 2:59:30 PM
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Template:
DRMS Permit Index
Permit No
M2009076
IBM Index Class Name
PERMIT FILE
Doc Date
7/27/2010
Doc Name
Adequacy Response- Ex. T- EPP
From
Venture Resources
To
DRMS
Email Name
ACS
Media Type
D
Archive
No
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Sampling will be performed at each well on a quarterly basis, and logged in an auditable Company record. Ideally, <br />• there should be no water detected, indicating that systems are working correctly. If water is encountered it could be <br />related to a potential problem or temporary saturation from a recent storm event. hi either event, the DRMS requires <br />a report within five working days if water is encountered. This report must immediately provide the pH value and <br />the purged volume. Laboratory analysis should follow as soon as the results are attained from the lab. Metals to be <br />tested shall include: Al, As, Ba, Cd, Cr, Cu, Pb, Mn, Hg, Se, Ag, and Zn. If the testing indicates a dry result, this <br />data should be collected for reporting to the DRMS in the annual reclamation report. <br />The following monitoring/sampling parameters shall be followed for each well: <br />1. Unlock and open security cap. <br />2. Insert a clean bailer-style sampler (nominally 0.5"-1.5" OD x 12"L) into the casing and lower via a clean, <br />nylon cord. <br />3. Let the sampler reside at the bottom of the casing (25') for at least 2 minutes. <br />4. Carefully pull the sampler back to the surface. <br />5. Label a new clean bottle and complete the report with the following data: <br />a. Date/time of sample <br />b. Location, Up- or Down-Gradient <br />c. Approx. depth of liquid level in bailer, in inches from bottom of borehole. <br />d. Purged volume <br />e. pH value to I/101h of a standard unit using a properly calibrated handheld pH meter <br />f If none collected, record on report "Dry" <br />g. Sampler's signature <br />6. Pour any contents into the labeled, clean, plastic sampling bottle. <br />7. Procedure #246 shall be repeated three times as a purging procedure if water is encountered. <br />a_ The fourth bottle collected shall be submitted for sampling or, the last bottle taken if the well goes <br />dry during the purging sequence. <br />8. The sample report shall be recorded with the Venture Resources' office. <br />a. If water is encountered, the preliminary field report with pH value and purged volume shall be <br />• submitted to the DRMS within five working days. <br />9. Any collected water will be forwarded to an independent analytical laboratory that can perform the <br />following test: Al, As, Ba, Cd, Cr, Cu, Pb, Mn, Hg, Se, Ag, and Zn metals -total concentration. <br />10. Returned lab results will be attached to the appropriate field report and maintained at the Venture <br />Resources' office. This data will be preserved for the entire life of the operations. <br />a, These test results shall also be immediately forwarded to DRMS upon receipt. <br />11. In the event that data is received indicating a problem, operations shall be ordered CEASED until the <br />problem can be identified and corrected. <br />As a part of normal mill operations, mill process water will be continuously monitored. A pH monitor and data <br />recorder will be installed at the tailings pump location within the mill. Should the pH reach a state outside of the <br />7.5-9 range that is necessary to precipitate the heavy metals, alarm notification will be activated for the operations <br />personnel. Recorded data is saved in 30 day increments available for future audit. The submittal notes on this <br />Serfilco Model 432 monitor/recorder can be found attached in Exhibit C. <br />If the pH falls outside of the 7.5-9 range, the operators are instructed to shut down the operation that delivers waste <br />to the impoundment. Once the source of the problem is corrected upstream in the process, waste can then be <br />continued to be discharged to the impoundment. <br />It is practically impossible for heavy metals to be in solution under these operating conditions (pH range of 7.5-9) as <br />shown in the attached A Water Handbook for Metal Mining Operations, by Thomas R. Wildeman (see Exhibit C). <br />On page 13 (of the same), Figure 1 shows the effect of raising the pH of this effluent water to 7-8. The method <br />employed in Venture Resources' processing plant has the identical beneficial effect as shown in this Figure 1. This <br />has also been verified by the Company and is evidenced by the waste stream lab sample results. <br />C <br />Page 6 of 31
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