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Logan Wash Mine Annual Report
<br />Permit No.: M-1977-424
<br />Bench Road and Lower Access Road areas of Area 13 were revegetated in the fall of 2005. In
<br />addition, the toe of the Lower Dump (1.64 acres) was identified as an area requiring reclamation
<br />after a major storm event in 2004 deposited debris flow material from the Lower Dump at the toe
<br />of the dump; this area was revegetated in 2005.
<br />Areas currently not expected to be reclaimed in the near future are the Lower Bench (Area 3, 2.1
<br />acres), the Lower Bench Road (Area 13, 0.9 acres), and the Upper Access Road (Area 13, BLM
<br />"tramroad" right-of-way, 5.3 acres) and the Evaporation Pond and Pipeline (Area 23, 9.8 acres).
<br />These surface areas comprise an approximate total of 18.1 acres.
<br />OOSI does not expect to reclaim Area 23, the Evaporation Pond and pipeline in the near future as
<br />retort water management and treatment are being evaluated under Amendment No. 1. Should
<br />OXY-USA decide not to construct a natural gas well on the Lower Bench, then OOSI will
<br />reclaim the Lower Bench at a suitable time (pending a final resolution of retort water treatment or
<br />management).
<br />On August 29`", 2005, DMG conducted a site inspection of lands meeting reclamation
<br />requirements. On January 12'', 2006, DMG released OOSI from further reclamation
<br />responsibility for Areas 6, 8, 9, 12, 14, 15, 16, 17, 19, 20 and a portion of Area 13 (roads).
<br />Mr. Travis Marshall of DRMS, conducted a site inspection on June 30, 2010. The purpose of the
<br />inspection was to evaluate the status of revegetated areas and their potential for reclamation
<br />release. On the basis of the discussion that occurred during the inspection, OOSI will submit a
<br />request in 2011 for reclamation release of several areas. OOSI anticipates requesting release of
<br />warranty for portions of Areas 1 (12.36 acres), and 2 (0.74 acres), and Areas 4 (4.26 acres), and
<br />10 (0.24 acres), the revegetated portions of Area 13 (1.26 acres), the "Lower Dump Toe"
<br />(estimated to be 1.64 acres), and the Soil Barrow Area (0.65 acres) by Fall of 2011. These areas
<br />total approximately 21.1 acres.
<br />3.0 Monitoring Activities in 2010
<br />Monitoring activities at the Logan Wash Mine during the reporting period consisted of periodic
<br />monitoring of mine water discharge and related sampling activities when necessary. These
<br />activities included (1) flow monitoring and sampling of two National Pollution Discharge
<br />Elimination System (NPDES) outfalls as required by permit schedules, (2) measurement of flow
<br />rates of the mine-water discharge and retort-water discharge on an approximate monthly basis, (3)
<br />measurement of the manometer installed in the Research Mine Vault, and 4) bi-monthly
<br />monitoring of the Evaporation Pond leak detection system. Monitoring data for the reporting
<br />period are shown in Table 4.
<br />3.1 NPDES Outfall Sampling
<br />Two NPDES (Colorado Discharge Permit System, [CDPS] permit no. 000048816) outfalls,
<br />administered by the Colorado Department of Public Health and Environment (CDPHE), were
<br />monitored in accordance with permit-established schedules. Outfall 001 (Logan Wash Mine,
<br />main lower portal [L-1 Portal] discharge) and Outfall 002 (Research Mine discharge) are to be
<br />monitored weekly for pH, flow rates, total dissolved solids (TDS), and total suspended solids
<br />JS S); monthly for TDS, TS S, pH, nitrate, sulfate, fluoride, ammonia, COD, boron, oil and
<br />grease, and phenols; and quarterly for TDS, TSS, pH, nitrate, sulfate, fluoride, ammonia, COD,
<br />boron, arsenic, copper, lead, oil and grease, and phenols.
<br />Western Water & Land, Inc. 4
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