REP46040

• Permit No: C1981008
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: APPROVED HYDROLOGIC MONITORING PROGRAM
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

TABLE 2.04.7-1 (CONT.)

•
MONTHLY QUARTERLY SEMI-
ANNUALLY ANNUALLY
NEW HORIZON 2 MINE February, May,
Augusf, Nov February ,August August
GW-N16P1 (Underburden) Field(9) Lab(10)
GW-N17P1 (Dakota Coal) Field(9) Lab(10)
GW-N18P1 (Overburden) Field(9) Lab(10)
GW-N36 (Underburden) Field(9) Lab(10)
GW-N37 (Dakota Coap Field(9) Lab(10)
GW-N36 (Overburden) Field(9) Lab(10)
GW-N39 (Alluvium) Field(6) Lab(10)
GW-N40 (Alluvium) Field(6) Lab(10)
GW-N41 (Overburden) Field(6) Lab(8)
GW-N42 (Coal) Field(6) Lab(8)
GW-N43 (Underburden) Field(6) Lab(8)
GW-N44 (Overburden) Field(6) Lab(8)
GW-N45 (Coal) Field(6) Lab(8)
GW-N46 (Underburden) Field(6) Lab(8)
SW-N102 (NPDES 007) Field(3) Lab(4)
SW-N104 (West Lateral Ditch) Field(1) Lab(5)
SW-N105 (West Lateral Ditch) Field(1) Lab(5}
SW-N108 (Calamity Draw) Field(1) Lab(5)
SW-N109 (Calamity Draw) Field(1) Lab(5)
(1) Measure monthly water conductivity, PH, temperature, flow/depth for surface water monitoring
stations (SWs)
(2) Measure monthly for conductivity, PH, temperature, oil/grease, settleable solids, total suspended
solids, total dissolved solids, and iron for all discharging water from ponds for Outfalls 001 through
006.
(3) Measure weekly for conductivity, PH, temperature, oil/grease, settleable solids, and Flow for all
discharging water from Outfalls 001 and 007. Test for total suspended solids, total dissolved solids,
and iron once a month for Outfall 001 and Outfall 007.
(4) Measure water conductivity, PH, temperature, oil/grease, settleable solids, total suspended solids,
total dissolved solids, and iron. Full suite laboratory analysis (February, May, August, and November
on quarterly schedule), if pond(s) are discharging for Outtalls 001 through 007.
(5) Measure water conductivity, PH, temperature, oillgrease, and flow/depth. Have full suite laboratory
• analysis February and August for Semi-Annual schedule and August for Annual schedule) for fisted
groundwater monitoring wells and surface monitoring stations.
(REVISED 12-17-5G) 2.04.7-40