2015-06-30_HYDROLOGY - C1981010

• Permit No: C1981010
• IBM Index Class Name: Hydrology
• Doc Date: 6/30/2015
• Doc Name: Mid Term Review Memo Surface Water Hydrology June 2015
• From: Robin Reilley
• To: Tabetha Lynch
• Permit Index Doc Type: Other Surface Water
• Email Name: RAR
• Email Name: TNL
• Email Name: DIH
• Media Type: D
• Archive: No

M51. These criteria adequately meet the requirements of Rules 4.05.3 and
4.05.4.
Rule: 2.05.4(2) (h) Reclamation Plans
The general requirements of this portion of the Reclamation Rule include:
A description of steps taken to comply with the Clean Air (42 U.S.C. Sec. 7401 et
seq.), and Clean Water (33 U.S.C. Sec. 1251 et seq.) acts and other applicable air
and water quality laws and regulations.
The Trapper permit provided the Construction/ Emissions permits approved in 2009
by CDPHE Air Pollution Control Division (11MF253-1), and the Colorado Water
Quality Control Division CDPS permit (CO -0032115).
Permit sections 2.54 to 2.57D, 3.0, 4.7 and 4.8 adequately meet the requirements
of rule 2.05.4. (2)(h).
Rule: 2.05.6(1) Mitigation of Impacts
Permit section 2.0 (pgs 2-55 and 2-56) meets the requirements of Rule 2.05.6 (1)
by providing the air emissions permit from the Colorado Air Quality Control
Commission.
2.05.6 (3) (a)(i) (aii) (aiii) bi -v Mitigation of Impacts: Protection of Hvdrolooic Balance
Rule 2.05.6(3) was reviewed for protection of hydrological balance as it relates to
surface and alluvial water quality within permit area and adjacent areas and with
respect to Rule 4 (Performance Standards). The review included:
a. Description, maps and crossections (have ditch crossections) of measures to
be taken during and after mining, with respect to Rule 4, performance
standards.
b. Surface water quantity and quality (3ai) and (3aiii)
c. Water Rights (3aii)
d. Water treatment (3bii)
e. Hydrologic consequences of disturbance (3biii)
f. Monitoring Plan (3biv)
g. Hydrologic reclamation plan (3bv)
Maps were prepared to the standards of Rule 2.10.
Permit section 4.8.1.4 of Volume 4 pg 4-184 addresses all drainage from disturbed
areas. Permit section 2.7.7.3 of the permit discusses drainages in and adjacent to
the permit area and their potential as alluvial valley floors. Particular attention was
paid to Flume Gulch. The Hydrologic balance is addressed in Permit section 2.7.6
Vol. II pages 2-525 to 2.576u.
Trapper Mid Term Review Prepared by: R. Reilley Page 4
Date: June 2015 Document Location: M\\Coal\rar\MidTermReviews