1985-01-24_REVISION - M1983052 ‎(5)‎

• Permit No: M1983052
• IBM Index Class Name: Revision
• Doc Date: 1/24/1985
• Doc Name: REGULAR 112 PERMIT APPLICATION FORM
• Type & Sequence: HR1
• Media Type: D
• Archive: No

• Please refer to Appendix B for plans and specifications
of the lined laboratory disposal trench .
5 . 22 Water Sampling Program . Water quality will
be monitored to insure compliance with state and federal water
quality standards . For the first six month period , water samples
will be taken monthly in order to gather baseline information .
The Company may then switch to a quarterly sampling program.
As shown on the map in Appendix C, six sampling sites
will be monitored . Samples will be taken from the upper spring,
upper pond, upper and lower holding pond , lower pond and stream
below lowest pond .
Duplicate samples will be taken , one for in-house
analysis and one to be sent to an outside EPA approved laboratory.
The following parameters will be analyzed :
- pH (Field and Lab)
- TDS (Lab)
- EC (Field )
- CN total free [available] (Lab)
- Temperature (Field)
Preservation procedures as outlined by the EPA shall
be followed. Duplicates of the following samples shall be taken:
• - One liter of water in a clean, rinsed plastic container
for cyanide tests . The pH of this sample will be
adjusted to 12 . 0 with NaOH.
A second sample of 500 ml will be taken for TDS and
pH. All samples will be packed in an ice chest and
cooled to 4° C.
One set of samples will be retained and analyzed in
Marathon 's laboratory upon receipt. The duplicate set of samples
shall be sent out immediately to an EPA approved commercial
laboratory for analysis.
The analytical methods to be used by the Company are
those specified in the EPA manual which correspond to methods
EN-1 through EN-4 in Marathon' s Procedure Manual.
Please refer to Appendix C for a map of the water
sampling program.
5 . 3 Drainage Plan
The drainage plan approved in the original permit
. will in general remain the same with the following exceptions :
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