GENERAL32617

• Permit No: C1981020
• IBM Index Class Name: General Documents
• Doc Date: 9/7/1982
• Doc Name: PROPOSED DECISION AND FINDINGS OF COMPLIANCE
• Permit Index Doc Type: Findings
• Media Type: D
• Archive: No

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If these analyses indicate the presence of toxic or acid-forming materials, the
Division may require the waste pile to be covered with a suitable amount of
material, pursuant to Rule 4.14.3.
With the acceptance of the above stipulation, the operation is in compliance
with the requirements of this section.
V. Hydrologic Balance: Surface Water - Rules 2.04.5, 2.04.7, 2.05.3(4),
2.05.6(3) and 4.05
Surface Water Baseline Information and Monitoring
The information provided dealing with surface water quality and quantity were
reviewed by the Division. This information can be found in Section 4.5 of
Volume I of the application.
Salt Creek Mining Company has supplied data indicating characteristics of
water quantity and quality for East Salt Creek in the vicinity of Munger Canyon
and for the drainage in Munger Canyon. Total dissolved solids in East Salt
Creek have been noted over a range of 600 mg/1 to 10,000 mg/1. The accepted
standard for irrigation water is 1500 mg/1 and for livestock is 5000 mg/1
(according to Mined Land Reclamation Standards of August 26, 1981). Water is
typically a sodium sulfate type.
In Munger Creek, like most semi-arid ephemeral drainages, dissolved constituents
in surface water often reach high levels during storm runoff. Dissolved solids
measured in Munger Canyon ranged from 92 mg/1 in December to 956 mg/I in
April.
Pursuant to Rule 2.05.6(3)(b)(iii), Salt Creek Mining Company has submitted a
plan for the collection, recording and reporting of surface water quality and
quantity data. The proposed plan calls for surface water monitoring above
and below the disturbance in the Munger Canyon tributary, along Munger Canyon
before the confluence with East Salt Creek and along East Salt Creek upstream
and downstream of the confluence with Munger Canyon. The monitoring plan
includes a new monitoring site which is specifically required in the Findings
Document for the McClave Canyon Mine (reference File No. C-004-80). This
monitoring plan will be sufficient to identify any effects of the operation
on the surface water hydrology.
Salt Creek Mining Company has committed to the following monitoring program:
Surface Water Monitoring:
1) Flow measurements will be taken at surface water monitoring site SW-3
and water samples will be taken from sites SW-3, SW-6 and SW-7 on Munger
Canyon twice a year (at different times of the year) as follows:
a) once during spring snowmelt
b) once during a storm event (spring or summer)