2005-03-28_REPORT - M1977424

• Permit No: M1977424
• IBM Index Class Name: REPORT
• Doc Date: 3/28/2005
• Doc Name: Annual Fee/Report/Map
• From: Occidental Oil Shale Inc.
• To: DMG
• Permit Index Doc Type: Annual Fee / Report
• Media Type: D
• Archive: No

Logan Wash Mine Annual Report
Permit No.: M-1977-424
a. Completion of the planting of a total of 3,400 10 cubic-inch and quart-size
saplings on the Upper and Lower Dump slopes (completed on September 3`') A
small portion of the planting on the Lower Dump was conducted last year. This
labor-intensive task involved the manual construction of planting "micro"
terraces or "V" pockets on the steep rocky slopes of the dumps. The cut face of
these excavations was supported by the installation of asilt-fence-like retaining
structure using Mirafi ®fabric. Planting involved construction of a hand-dug
excavation, the addition of compost soil mix, the installation of an irrigation
supplement (polymer), and placement of the plant plug, more soil, a fertilizer
tablet, mulch, protective polymer netting over the plant stem, and different
netting on the mulched surface. The distribution and density of the sapling plants
was verbally approved by the DMG as a result of an inspection on September 1.
No further revegetation of the Upper and Lower Dumps is planned. However,
maintenance of these areas will include irrigation, fertilization, and maintenance
of structural terraces.
b. Seeded, fertilized, and mulching (crimped certified straw) of imported substrate
soil on Upper Bench and a test plot portion of the Lower Bench. Also, an
experimental plot without imported soil substrate was established on Research
Mine Dump, where seed was hand raked into the ground surface and covered
with straw erosion blankets. Seed and mulch were also placed on small test plots
without soil substrate on the Lower Bench and on debris flow material at toe of
Lower Dump. The vent housing area (part of Area 19) was also reseeded and
straw mulched.
2. Irrigation. All transplanted saplings were irrigated one to two times per week by means
of gravity feed water systems using clean mine water drainage or imported water stored
in two vertical steel tanks on the Upper and Lower Benches.
3. Mine Debris Removal. Crews removed metal, wire, rope, fabric and other miscellaneous
debris found on the Upper and Lower Dumps and the Research Mine Dump. This
material was transported to the county landfill.
4. Pipe and Trestle Removal. A 40-fr section of exposed piping and support structures from
the retort drainage pipeline was removed and transported to the county landfill. This
section of the retort pipeline was re-constructed through a re-aligned trench parallel to the
Lower Access Road.
5. Reclamation Fence Removal. Reclamation fencing installed to protect previously
revegetated areas along the Logan Wash access road was removed. Fencing consisted of
barbed wire, metal T-posts, and wooden fence posts. Areas where fencing was removed
include Area 6, 20, B2-B5, as shown in Exhibit F. All areas where fencing was removed
contained fully developed native vegetation. This work was verbally approved by the
U.S. BLM.
6. Pond Liner Repair. 1n late summer, the HDPE pond liner at Pond 1, the retort water
evaporation pond, was inspected for damage in areas not under water. All damaged areas
were repaired (using a welded patch) to prevent leakage.
7. Regrading. Regrading with conventional excavation equipment consisted of:
Western Water & Land, Inc. 5