2014-03-20_REPORT - M1977424

• Permit No: M1977424
• IBM Index Class Name: Report
• Doc Date: 3/20/2014
• Doc Name: Annual Fee/Report/Map
• From: Occidental Oil Shale, Inc.
• To: DRMS
• Email Name: THM
• Media Type: D
• Archive: No

Logan Wash Mine Annual Report
Permit No.: M- 1977 -424
measurement of the manometer installed in the Research Mine Vault, and 4) monitoring of the
Evaporation Pond leak detection system. Monitoring data for the reporting period are shown in
Table 4.
3.1 CDPS (NPDES) Outfall Sampling
The CDPS permit for Logan Wash Mine was renewed and became effective on May 1, 2011.
Two CDPS (permit no. C00048816) outfalls, administered by the Colorado Department of Public
Health and Environment ( CDPHE), were monitored in accordance with permit - established
schedules. Outfall 001 (Logan Wash Mine, main lower portal [L -1 Portal] discharge) is to be
monitored monthly for pH, total suspended solids (TSS), oil and grease, arsenic, cyanide (WAD),
molybdenum, selenium, uranium, boron, and chloride; and quarterly for the additional parameters
of total dissolved solids (TDS), mercury and whole effluent toxicity (WET). Flow at this outfall is
monitored continuously with an electromagnetic flow meter, and is measured by bucket and stop
watch at the outfall during sampling events.
Outfall 002 (Research Mine discharge) is to be monitored monthly for pH, TSS, oil and grease,
arsenic, copper, cyanide (WAD), lead, molybdenum, selenium, uranium, boron, and chloride; and
quarterly for the additional parameters of TDS, mercury, and WET. Continuous flow monitoring
is also required. Because Outfall 002 is shut -in and has not discharged for many years, no flow
monitoring or sampling has occurred under the new CDPS permit.
During the reporting period, OOSI prepared Technical Revision No. 8 which proposes to
infiltrate mine water discharge from the two existing CDPS outfalls as specified within the
permit. This mine water management will occur under provisions of Memorandum of Agreement
(MOA) for the Implementation of SB 181 Amendments to the Colorado Water Quality Control
Act (25 -8 -101, et seq.) Pertaining to the Regulation of Mineral Mines (Dec. 14, 2010).
WWL submitted TR No. 8 to DRMS on September 25, 2013. DRMS provided its initial
preliminary adequacy response (PAR) on October 11, 2013. WWL provided a response to the
PAR on December l 9th, 2013. The response to the PAR was supported by waste rock leachate
data collected and analyzed in October, 2013. DRMS approved TR No. 8 on January 23, 2014.
The CDPS application to terminate CDPS permit C00048816 was submitted to CDPHE -WQCD
on February 12, 2014. It is anticipated to take up to 60 days to gain CDPHE -WQCD approval for
termination of the permit.
For more information regarding the Research Mine portal closure and management of the
Research Mine drainage see Technical Revision JR) No. 4 and TR No. 6 which present
significant revisions to Exhibit E, the Reclamation Plan for Logan Wash Mine.
3.2 Mine -Water and Retort -Water Discharge
Discharge measurements of clean (non - retort) mine -water discharge ( Outfall 001) and retort-
water discharge were conducted on a quarterly or more frequent basis when access and schedule
allowed. Continuous flow (meter) monitoring of Outfall 001 water came on line in August 2011
as part of a requirement of the CDPS permit. These data were collected by OOSI to assess and
evaluate mine closure effectiveness, to support operation and maintenance of the Evaporation
Pond, and future water management options, and meet state requirements. Table 4 shows the
results of monitoring data collected at the mine in 2013, and Figure 4 shows the results for the
Outfall 001 flow meter (LW -001 mine water discharge).
Western Water & Land, Inc. 5