Voluntary – 43 CFR 3809 Plan of Operations Form
5. Calculated porosity
6. Constant head analyses for saturated hydraulic conductivity test
7. Hanging column
8. Pressure plate
9. Unsaturated hydraulic conductivity
10. Proctor compaction
V.
Infiltration Modeling needed, such as Heap Leach Draindown Estimation, Tailings Impoundment
Draindown Estimation, cap/cover materials, etc.
VI. Waste Rock Management Plan
1. Work plan history with geochemical and geotechnical summaries.
2. Operating/post reclamation management of the waste rock dumps (WRDs)
3. Describe mining sequence of rock types/volumes/final disposition (see section III.2 above).
4. Describe how potentially acid generating (PAG) rock will be selectively mined, segregated and managed
to preclude exposure to air and water. Need to address metals mobility/accumulation for both PAG and
non-PAG materials (see section III.5.c).
5. For each benign and PAG WRD facility, include a text description for: toe elevation, crest elevation,
ultimate height, reclaimed slope, plan dimensions, tonnage capacity and acres. Provide a summary
table for volumes by facility for life-of-mine (LOM).
6. Supplement the text with plan and cross sectional drawings showing: plan views and related
alluvial/cover stockpile locations, cross sectional views showing operational and post reclamation
slopes, grades, toe and crest elevations, existing ground slope and cap thicknesses for LOM.
7. For pit backfill scenarios, include the same text and supporting drawings previously described, describe
any amendment requirements. Provide information on the total volume to be backfilled with rock type
and its origin, final backfill elevation and rebound ground water elevation.
8. Tailings impoundments, heaps, ore stockpiles, topsoil stockpiles should include the same text and
supporting drawings previously described.
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