_PERMIT FILE - M2016010 ‎(2)‎

• Permit No: M2016010
• IBM Index Class Name: Permit File
• Doc Name: Adequacy Review Response #3
• From: Transit Mix Concrete Co.
• To: DRMS
• Email Name: AME
• Media Type: D
• Archive: No

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' . Transit Mix Concrete Co.
HITCH RACK RANCH QUARRY, FILE NO. M-2016-010, 112
CONSTRUCTION MATERIALS RECLAMATION PERMIT
APPLICATION, THIRD ADEQUACY REVIEW - EXHIBIT G,
WATER RESOURCES
DRMS COMMENTS — TIM CAZIER
A) Comment: Figure G-8. As this is a Phase III plan and the Division is estimating the bond
through Phase 111, the removal and/or complete sealing of culvert CWC-1 (-700 ft. of 96-in
dia. CMP)must be addressed. This will have implications to Exhibit L as well. Given that haul
traffic is planned to cross the culvert and the fill/cover is to be crusher fines, structure design
must also be addressed. Please:
a. Describe how this culvert will be removed and/or completely sealed for closure; and
b. Provide costs for this effort in Exhibit L.
c. Commit in writing to provide the Division with a structure design for CWC- 1 to address
cover, loads and fill strength prior to installing the 96-inch dia. CWC-1 culvert.
Response: Transit Mix has revised Exhibits G and L to clarify that culvert CWC-1 will be
completely removed. Costs for excavating the fill and establishing an open channel are
included in Exhibit L. Transit Mix commits to providing the structure design for CWC-1
prior to installing the culvert. The backfill for this culvert will be fines material, and Transit
Mix will obtain the strength parameters necessary for these calculations once the fines
material is generated.
B) Comment: Figure G-9. The final disposition of culvert CWC-1 must be addressed. This
includes a commitment to remove and/or completely seal culvert CWC-1 (-1,100 ft. of 96-in
dia. CMP). This may be addressed in the response to Comment A, but it needs to be noted that
the culvert is approximately 400 feet longer on Figure G-9, than that shown in Figure G-8.
Response: Transit Mix has revised Exhibit G to clarify that culvert CWC-1 will be completely
removed.
C) Comment: Figure G-12. Culverts LTC-CC-2, -3, and -4 are shown to be removed, but the
access road contours have not been modified to indicate the fill in these drainages will be
removed to the original contours to facilitate positive drainage. It is the Division's
understanding that the road is to be removed/reclaimed at closure. As such drainages need to
be restored to equivalent pre-mine condition. Also, as the Division will defer to Exhibit F for
final grading. These drainage re-contouring efforts need to be shown on Exhibit F as well.
Finally, it does not appear that this earthwork was included in Exhibit L. Please:
a. Clarify the need for grading/re-contouring in these culvert removal efforts;
Hitch Rack Ranch Quarry Permit Application M-2016-010
September 26, 2016 1