GENERAL40706

• Permit No: C1981013
• IBM Index Class Name: General Documents
• Doc Date: 1/25/1984
• Doc Name: MINING PERMIT ‎(Dated 1/25/84 to 1/25/89)‎
• Permit Index Doc Type: PERMIT LEGAL DOCUMENT
• Media Type: D
• Archive: No

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Stipulation No. 9
PRIOR TO THE DISPOSAL OF ANY WASTE i•IATERIAL (i.e. DEVELOPr1ENT WASTES,
COAL PROCESSING WASTES, REFUSE, ETC.) ON THE ALLUVIUM OF CIRUELA CANYON,
THE PERMITTEE SHALL:
A) INSTALL A 00'WNGRADIENT MONITORING 41ELL IN THE ALLUVIUM OF CIRUELA
CANYON WHICH IS COMPLETED INTO BEDROCK;
B) CONDUCT A PUMPING TEST UN THE ALLUVIUM TO DETERMINE THE
PERMEABILITY, TRANSMISSIVITY, AND SPECIFIC YIELD OF THE CIRUELA
CANYON ALLUVIUM, UR PROVIDE EXTRAPOLATED INFORr1P,TION FROM SIMILAR
ALLUVIAL AQUIFERS;
C) COLLECT BASELINE GROUfJD WATER QUALITY AND GROUND WATER LEVEL DATA
ON THE CIRUELA CANYON ALLUVIAL WELL;
D) ASSESS THE HYDROLOGIC IMPACTS OF THE DISPOSAL PILE AfVD DEMONSTRATE
THAT THE PROPOSED PILE DESIGN WILL MINIMIZE THE IMPACTS TO THE
QUALITY AND QUANTITY OF ALLUVIAL GROUND WATER IN CIRUELA CANYON AND
IN THE PICKETWIRE VALLEY.
E) SUBMIT THE ASSESSMENT AND DESIGN TO THE DIVISION FOR APPROVAL AS A
REVISION.
Stipulation No. 10
AFTER A THOROUGH REVIEW OF THE BASELINE WATER QUALITY DATA, THE
OVERBURDEN CHEMISTRY DATA SUBMITTED BY CF&I, AND THE RECEIVING STREAr~V
STANDARDS, THE DIVISION REQUIRES MONITORING TO INCLUUE THE FOLLOWING:
A) MONTHLY MONITORING OF THE PURGATOIRE RIVER UPSTREAM OF THE MAXWELL
MINE, THE PURGATOIRE RIVER BELOW THE CONFLUENCE WITN CIRUELA CANYON
(OLD CHANNEL), AND THE MAXWELL MINE DISCHARGE. THE PARAMETERS TO
BE MONITORED INCLUDE FLOW, FIELD pH, FIELD ELECTRO-CONDUCTIVITY AND
FIELD WATER TEMPERATURE.
B) MONTHLY MONITORING OF THE PURGATOIRE RIVER ALLUVIAL WELLS UPSTREAM
AND DOWNSTREAM OF THE MAXWELL MINE, AND MONTHLY h10NITORING OF THE
ALLUVIAL WELL IN CIRUELA CANYON. THE PARAMETERS TO BE MONITORED
INCLUDE GROUND WATER LEVELS, FIELD pH, FIELD ELECTRO-CONDUCTIVITY
AND FIELD WATER TEMPERATURE.
C) QUARTERLY MONITORING, (FEBRUARY, r1AY, AUGUST, AND NOVEMBER) OF
hW XWELL i~1INE DISCHARGE. THE PARAMETERS TO BE MOiJITURED INCLUDE
FLOW, FIELD pH, FIELD ELECTRO-CONDUCTIVITY, FIELD WATER
TEMPERATURE, TURBIDITY, TOTAL SUSPENDED SOLIDS, TOTAL DISSOLVED
SOLIDS, TOTAL COMBUSTIBLE SOLIDS, TOTAL HARDNESS, TOTAL IRON, TOTAL
MANGANESE, AND PARAMETERS REQUI~2ED UfJDER THE PERMITTEE'S NPDES
PERMIT.