2009-09-25_PERMIT FILE - M2009076 ‎(43)‎

• Permit No: M2009076
• IBM Index Class Name: PERMIT FILE
• Doc Date: 9/25/2009
• Doc Name: Reclamation Feasibility Report- Virginia Canyon
• From: Venture Resources
• To: DRMS
• Media Type: D
• Archive: No

Reclamation Feasibility Report - Virginia Canyon
• DMG Procedure
This extraction is a 2:1 by volume deionized water extraction process described above for waste
rock analysis.
Total Characteristic Leaching Procedure (Modified EPA Method 1311) (5)
The Toxicity Characteristic Leaching Procedure (TCLP) is the standard procedure used by the EPA to
classify solid materials as hazardous wastes.
The extraction solution was prepared by adding 5.7 ml of glacial acetic acid to 500 ml of water. 64.3 ml of
1 N NaOH was added to the solution that was then brought to a volume of 1 L. 40 ml of this extraction
solution were then added to 2 g of < 80-mesh sediment in a 125 ml bottle. The bottles were then agitated
end over end using a rotary tumbler for 24 hours. Samples were filtered with a 0.45 µm syringe filter,
acidified with nitric acid, and analyzed using ICP-AES
Modified Synthetic Precipitation Leaching Procedure (EPA Method 1312) (4)
The Synthetic Precipitation Leaching Procedure (SPLP), in its unmodified form, is used to by the
EPA to determine the mobility of metals in a solid if exposed to acid rain.
A solution of 60% H2SO4: 40% HNO3 by weight was prepared. Distilled water was then brought to
a pH of 5.0 using the 60% H2SO4: 40% HNO3 solution. 2 g of <80 mesh sediment was placed into
a 125 ml bottle and 40 ml of the extraction solution were added. The bottles were then agitated
end over end using a rotary tumbler for 18 hours. Samples were filtered with a 0.45µm syringe
filter, acidified with nitric acid, and analyzed using ICP-AES.
is H2O2 Acid Potential Test (EPA Field and Lab Methods 3.2.11) (2)
The-H202 Acid Producing Potential Test (APP) is procedure that can be used to predict if a mine
waste material will be an acid producer or a neutralizer. The APP releases sulfide materials and
the extraction fluid will indicate what metal sulfides can be found in a solid.
1 g of < 80 mesh sediment was placed into a Teflon beaker, 12 ml of 30% H2O2 was added, and
heated to 40°C. The beaker was removed from heat and the reaction was allowed to go to
completion as shown when bubbling ceased. An additional 6 ml of 30% H2O2 was added to the
beaker and the reaction was once again allowed to go to completion. The beaker was then heated
to 90°C and was allowed to react until any unreacted H2O2 in the beaker was destroyed. Beakers
were not allowed to go to dryness. The sides of the beaker were washed down with 50 ml of
distilled water, and then were heated to boiling to drive off any dissolved CO2. The beaker was
then cooled to room temperature and titrated with 0.0100 N NaOH that was free of C02 to a pH of
7.0 using a pH meter. The procedure was repeated to collect a sample for analysis on the ICP-
AES.
Amorphous Digestion (6)
An amorphous digestion was carried out in order to determine if iron and manganese oxides were
present in the sediments analyzed (6). Like the APP, this procedure tests for specific species
within a sediment.
An extraction solution was prepared containing 0.2 M (NH4)2C2O4, 0.2 M H2C204.21-120, and 0.1 M
Ascorbic Acid. 80 ml of the extraction solution was then added to 2 g <80-mesh sediment in a
Teflon beaker. The beaker was heated to 90°C for 30 minutes. Samples were filtered with a 0.45
µm syringe filter, acidified with nitric acid, and analyzed using ICP-AES.

13