Precious Metals Recovery LLC RCRA Permit Application Dry Hills ...

30.1.11 Dispersion Modeling – 40 CFR 299.109(h)
An air model will be run to calculate ambient air quality impacts from the proposed TSF, in
accordance with standards set by NDEP, Bureau of Air Quality.
30.1.12 Ground Level Concentration – 40 CFR 266.109(a)(2)
Air emissions from the proposed TSF will be permitted by NDEP, Bureau of Air Quality. The
maximum annual average ground level concentration of each relevant substance will be
calculated based on the feed rate, feed composition, and equipment efficiency. The allowable
ambient levels for mercury, as outlined in Appendices IV and V of 40 CFR 266, are not expected
to be exceeded (or 0.1 µg/m 3 ).
30.1.13 Environmental Assessment – 40 CFR 270.23 & 264.601(a)
This section is not applicable, because all units at the proposed TSF, including the retort system,
are enclosed in an engineered structure that prevents a release to the environment. The potential
for a release to groundwater or land is extremely minute as a result of the engineered design.
30.1.14 Protection of Surface Water, Wetlands, and Soil Surface – 40 CFR
270.23(b), 270.23(c), & 264.601,
This section is not applicable, because all units at the proposed TSF, including the retort system,
are enclosed in an engineered structure, which will prevent a release to the environment. The
potential for a release to groundwater or land is extremely minute as a result of the engineered
design.
30.1.15 Performance Standards – 40 CFR 270.23 & 264.601
Performance of the retort will be evaluated by analyzing samples of the retort residual solids for
mercury.
30.1.16 Reporting – 40 CFR 270.23(d)
Treatment time and operating temperature will be recorded in the operating record. The
operating record will be maintained on-site for a minimum of three years.
30.1.17 Additional Requirements – 40 CFR 270.23(e) & 264.601
No additional information requirements have been identified at this time.
30.2 Filter Press
A filter press will used to physically separate solids from liquids. The filter press does not meet
the definition of a tank, and is therefore being described in this section of the application.
30.2.1 Filter Press Description – 40 CFR 270.23(a) & 270.23(d)
The filter press is a solid-liquid separation device that consists of a shell with plates in a
chamber. The unit is constructed of epoxy coated carbon steel with the approximate dimensions
PMR RCRA Permit Application, Dry Hills Facility Page 138
JBR Environmental Consultants, Inc. | HATCH March 2013