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2011-09-29_REVISION - M1977215
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2011-09-29_REVISION - M1977215
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Last modified
11/20/2020 2:21:21 PM
Creation date
10/3/2011 8:16:54 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977215
IBM Index Class Name
REVISION
Doc Date
9/29/2011
Doc Name
Response to the preliminary adequacy review (TR-18)
From
Rio Grande Silver, Inc.
To
DRMS
Type & Sequence
TR18
Email Name
RCO
Media Type
D
Archive
No
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Portal Facilities <br />The Pole -barn compressor cover will have a metal roof with open sides: dimensions — 10'w X <br />20'L X 12'H. <br />Two (2) - 10,000 gallon water tanks: diameter 12'; height 12'. The tanks will be installed <br />adjacent to each other on the "cut" portion of the portal bench, therefore, no concrete pad is <br />necessary. The tanks will either be insulated, or, a wooden frame, metal sided structure will be <br />constructed around the tanks. Dimensions of the building are 20'W X 40'L X 15 H. The <br />structure will be installed on a temporary wooden foundation, insulated and will be supplied <br />with electric heat. There will be pipelines from the underground workings to the tanks. The <br />tanks will have valves and pumps used to fill the tanks from the decline and transfer water to <br />the #1 holding pond or water trucks. <br />Maintenance shop: The shop will be located in the facilities area (not on the portal bench). The <br />shop structure will be 40'W X 50'L X 15'H, fabric material and insulated. Propane heat and <br />electrical power will be provided. The concrete (reinforce) foundation will be 40W'X5OL'X8" <br />with an additional 40W'X20'X8" entrance pad. A concrete stem wall will be constructed <br />around the perimeter to prevent any leaked petroleum products from escaping from the shop. <br />Fuel and Fluid Storage <br />All lubricant and fuel storage will comply with Environmental Protection Agency guidelines 40 <br />CFR Part 112 and state of Colorado regulations. A draft SPCC plan has been developed for the <br />site, however, the prime contractor selected for the project will be required to revise the SPCC <br />plan based on "as- built" conditions. A copy of the SPCC plan will be available for review at the <br />project site. <br />Lubricants and antifreeze will be stored in the maintenance shop and or, a conex storage unit <br />(40'X10') located adjacent to the shop. This conex will also be a self- contained unit. Lubricants <br />will be delivered in totes and will be contained in steel containers as mandated by state and <br />federal regulations. <br />Diesel fuel will be contained in the fuel storage area. A sketch of the planned storage area is <br />attached. See Figure 4. The fuel storage area will be lined with either 60 -mil or 80 -mil HDPE. <br />The containment area will also be used to stored barrels of used oil and lubricants until a <br />licensed contractor removes the used products for recycle. The containment area will provide <br />containment of at least 110% of maximum product storage. <br />Reclamation Plan (Section 10) <br />Bulkhead — after further discussion and consideration, RGS feels that no bulkhead will be <br />required to close the Portal. The static water level is well below the portal entrance, therefore, <br />no bulkhead is required. <br />Portal backfill: It is planned that about 50' of the portal entrance will be backfilled with <br />development rock and inert construction demolition waste. <br />TR -18 Rev /anise to PAR Letter A c .S.(,hoc 9/26/2011 8 <br />
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