PERMFILE46007

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Name: PR-01 Amendments
• Section_Exhibit Name: Exhibit 21 NPDES Permit Amendment
• Media Type: D
• Archive: No

Table II-1-Discharge Points
Outfall Wastewater Location A vg Flow, Daily Max 10 yr/24-hr Event
Source* Designation MGD Flow, MGD Vol MG
OOIA SR Filll 0 0 10.3
002 SR Fi112 0 0 3.5
003 SR Ftll3 0 0 2.5
} 004A SR Fil[ 4 0 0 2 3
005 SR Fi115 0 0 1 /.8
006A SR Fill 6 0 0 ], /
007A SR Fill ? 0 0 2.0
008 SR Fi118 0 0 3 /
009 SR Fi119 0 0 ],2
009A SR Fill9 0 0 0.5
OIOA SR CoalLoadout 0 0 0.7
014 SR Fill2-1 (2-2) 0 0 !.9
015 SR North P2 (2-3) 0 0 /.1
016 SR P3 (3-I) 0 0 0.8
017 SR Fi114-2, P4 (4-I) 0 0 11
018 SR Fit/ 4-I, P4 (4-3) 0 0 1.1
019 SR P5, Fill 5-I (5-1) 0 0 1.5
020 SR P6Fi116-1 (6-1) 0 0 6.5
021 SR South P2 (7-1) 0 0 2./
022 SR North P7 (7-2) 0 0 0.4
023 SR Fill ?-1 (7-3) 0 0 2.1
024 SR Fill 7-2 (7-4) 0 0 0.9
025 SR P8, Fi118-1 (8-1) 0 0 2.5
026 SR Pond 8-2 (8-2) 0 0 0.4
(falls in bold are existing outfalls from previous permit, see previous permit and rationale for furtfier details.
MW means mine water, SR means surface runoff
•* Area se rved is reclaimed, qualifies as apost-mining area
Receiving Water
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Jeff Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Canyon
Lorencito Coal Company (LCC) has submitted a permit revision request proposing additional mine area for the Lorencito Canyon that includes
14 newsedimentation ponds (2-2, 2-3, 3-1, 4-1, 4-3, S-1, 6-1, 7-/, 7-2, 7-3, 7-4, 8-1, 8-2, and OIOA (new loadout location)) as shown in figure
2. LCC has also requested the elimination of two ponds from Jeff Canyon (001 and 007) and replaced them with ponds OOIA, 004A, 006A,
007A, and 009A. !n addition, outfa110/0 has been replaced by OIOA as mentioned previously for the new loadout location.
IIL RECEIVING STREAM
A. Identification, Classification, and Standards
1. Identification: Discharges to Jeff Canyon, Lorencito Canyon- all tributaries to the Purgatoire River which are within segment 6,
Lower Arkansas River sub-basin, Arkansas River basin.
2. Classification: Segment 6 is classified for the following uses: Use Protected; Recreation, Class 2; Aquatic Life, Class 2 (cold);
Agriculture.
3. Numeric Standards: The standards which have been assigned in accordance with the classifications for segment 6 are found in
the Classifications and Numeric Standards for the Arkansas River Basin (5 CCR 1002-32), last update effective June 3Q 2001.
Included are standards for dissolved oxygen (t5.0 mg/1, 7.0 mg/I spawning), pH (6.5-9.0 s.u.) and fecal coliform (1000/100 ml).
There are no metals or other aquatic life standards for this segment.
VL TERMS AND COND/T/ONS OF PERMIT
A. Determination of Effluent Limitations
I. E(Iluent Limitations: In developing suitable effluent limitations, the Division must review all applicable standards and regulations
and apply those that are more stringent. This review includes, but is not limited to: the water quality standard based effluent
limitations, federal guidelines and standards (40 CFR Subchapter N) and Stale Effluent Regulations (S CCR 1002-62). Such a
review has been done for this facility. The following limitations will apply.