GENERAL33082

• Permit No: C1980004
• IBM Index Class Name: General Documents
• Doc Date: 3/4/1982
• Doc Name: PROPOSED DECISION AND FINDINGS OF COMPLIANCE
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

• -13- •
V. Hvdroleeic Ealance: Surface 1,'ater -
2.04.5, '.04.7, 2.05.3(4),
The following stipulation is necessa'.• to ensure the proper monitoring of
effects of the operation. on the surface grater hydrology.
3. SURFACE IdATER PfONITORING:
1) FLOid PfEASUZtEP~iTS MUST BE TAI:EP; AT SURFACE H?TER "f0?:ITOP.ING SITE
Sl'-2 AND SdATER SA*LFLES SHALL EE TAI;E:: FRO~+ SITES Sld-2 AND Sit-5 0'~ *]cCLA'~E
CAZ`TON TdICE A TEAR (AT DIFFERS?ZT TIi'?~S OF THE lE?.P.) AS FOLL01?S:
z) ONCE DURING SPRING SNOi.'?~LT
b) ONCE DURING A STORPf EVENT
2) FLOi; ?=EASURL?f£NTS PfUST BE TAk:EN QUARTERL]' FRO*1 SITE Sit-1 AhD EATER
SAAiPLES MUST BE TAI:EN QUAP.TERL]' FRO?1 SITES Sld-1 AND THE REi,' A10NITORING
SITE OK EAST SALT CREEK (idY.ICH ?iL'ST EE LOCATED ON A ?L4P i1ITH A SPECIFIC
DESIGNATION AND ?1U ST BE APPP.OVED BT THE DIVISION).
3) TY.E h~ATEP. SAPL°LES MUST BE CHE:`SIC.~LLY AP:ALIZED FOR THE PARAP.*tTEP.S
SPECIFIED BELOi•;:
pH
Specific Conductance
Temperature(field)
Dissolved Oxygen (field)
Total Suspended Solids
Total Dissolved Solids
Total Combustible Solids
Total Hardness
Sodium Absorption
Ratio
Bicarbonzte(HC03)
Calcium(Ca+2)
Pfagnesium(*]g+'-)
Sodium(Na+)
Sulfate(SO4)
Aluminum(A1)
Arson is (AS)
Boron(E}
Cadmium(Cd)
Copper(Cu)
Iron(Fe)
Lead(Pb)
Planganese(?]n)
Pfercury(Hg)
Molybdenum(Mo)
SeleniumlSe)
Zinc(Zn)
4) THE RESULTS OF ALL PfONITORING P1~ST BE SUB*ff TTED TO THE DIVISION
I?D~DIATELY AFTER DATA COLLECTION AA•D AA'ALYSIS.
The only aspects of the operation which could potentially impact the surface
water in adjacent areas are the face up, mine bench and roads. A sedimentation
system approved b}• the Division and in compliance with the regulations will
route undisturbed flow around the disturbance and will conduct a1i flora from the
disturbed area through a properly sized sedimentation pond. The water contained
in the sedimentation pond will be released into the natural drainage only
after it is determined that the discharged crater will meet all applicable
effluent standards.
The pond design for the McClane Can}-on vine is adequate wit?: respect to
size and location. However, no provi=_ions have been made for dewaterirg
the pond at the ma::imum sediment level. Salt Cree}: "fining Company has
agreed to install a dewztering device in the pond. This dewatering device
c•ill ensure that the pond will at all times be capable of containing the
10 year-2~ hour runoff event.
Some ditches represented in the mine plan indicated high, potentially erosive,
velocities when carrying the flow fror,~ the 10 year-24 hour event. These
ditches are, for the most par*_, natural drainages that existed prior to mine
development. The material in the ditches consists of lzrge rocYs and bedroc}:.
These ditches are therefore considered to be non-erosive and stable.