INSPEC07476

• Permit No: M1977424
• IBM Index Class Name: Inspection
• Doc Date: 7/24/1981
• Doc Name: Additional Response to 5/12/1981 letter from SGR - Mine Drainage
• From: OCCIDENTAL OIL SHALE INC
• To: DNR
• Inspection Date: 5/6/1981
• Media Type: D
• Archive: No

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OCCIDENTAL OIL SHALE, I NC.
P. 0. BOX 2687 GRAND JUNCTION, COLORADO 81502
[phone]
July 24, 1981
Mr. Steven Richardson
Mined Land Reclamation Division
State of Colorado
Department of Natural Resources
723 Centennial Building
1313 Sherman Street
Denver, Colorado 80203
Re: Logan Wash Permit, Your File No. 77-424
Dear Mr. Richardson:
In your May 12, 1981 letter to me, you expressed a concern with regard to
our handling of mine drainage water, and the need to minimize contamination
of surface and ground waters. As you are probably aware, the question of
surface and ground water quality impacts was discussed thoroughly with
Mined Land Reclamation staff prior to approval of our permit by the Mined
Land Reclamation Board, and the Board was satisfied with the measures con-
tained in the reclamation plan. Prior to the Board's approval of the per-
mit for Logan Wash, joint meetings were held with representatives of the
Mined Land Reclamation staff, the Water Quality Control Division of the
Department of Health, and Occidental to clarify the allocation of responsi-
bility with respect to water quality as between the various state agencies
involved. The Board was apparently satisfied that Occidental would be
operating under the close supervision of the Water Quality Control Division
of the Department of Health with respect to both surface and ground water
quality.
Occidental operates at Logan Wash under an NPDES permit issued by the Water
Quality Control Division which regulates the discharge of water from mining
activities. This permit currently does not allow for the discharge of any
process-related water. We will continue to utilize all of the process water
collected in the retort sumps for steam production. No discharge of this
water is anticipated. We have applied to the 4later Quality Control Division
for an amendment to our NPDES permit to allow for the discharge of treated
condensate water (water condensed from the off-gas stream).
In addition to the NPDES permit, Occidental has
issued by the Water Quality Control Division.
surface disposal permit, we have a number of
Wash property that we monitor on a continuous
As a condition of the sub-
wells both on and off the Logan
and regular basis.
subsurface disposal permit