23.07.2013 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

There will be only one exhaust point from the proposed TSF Building. This exhaust point<br />

combines the retort off-gas, the general ventilation system, and the localized ventilation system<br />

as shown in Figure 1.2-10 above. This exhaust duct will be continuously monitored for mercury<br />

vapor using an extractive gas analyzer. The design mercury emission criterion will be 0.00001<br />

grain per standard cubic foot (gr/scf) (i.e., 0.023 milligram per cubic meter [mg/m 3 ]).<br />

Airborne mercury levels in the plant spaces will be monitored continuously to ensure a safe<br />

working environment. Respirators will be worn if vapor levels exceed acceptable levels (i.e.,<br />

OSHA limit).<br />

1.2.7 Process Waste Management<br />

Two forms of process waste will be generated at the facility; liquid and non-liquid. The<br />

following will be the sources of non-liquid waste:<br />

Retorted spent activated carbon.<br />

Crushed and retorted containers that were used to hold retort feed material.<br />

Residue from retorted filter cake.<br />

Residue of retorted non-liquids from screens installed in slurry pipes.<br />

Retorted plant tools and equipment.<br />

Non-liquid waste which is not hazardous by characteristics (e.g., passes the TCLP test) may be<br />

shipped for disposal to an off-site, licensed facility as non-hazardous waste. Non-liquid waste<br />

which is found to be hazardous by characteristics (e.g., does not pass the TCLP test) may be<br />

shipped to an appropriately licensed facility.<br />

Liquid waste will be treated in the waste solution treatment circuit prior to shipment off-site for<br />

further treatment, if necessary, or disposal (see Appendix 1-C Process Flow Diagrams). The<br />

wastewater treatment process is designed to achieve mercury concentration of less than 1<br />

milligram per liter.<br />

The following will be the sources of process waste solution:<br />

Calomel caustic leach waste solution.<br />

Retort condensate.<br />

Retort off-gas scrubber (SO2 scrubber) blowdown.<br />

Laboratory wastewater.<br />

PMR <strong>RCRA</strong> <strong>Permit</strong> <strong>Application</strong>, <strong>Dry</strong> <strong>Hills</strong> Facility Page 34<br />

JBR Environmental Consultants, Inc. | HATCH March 2013

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!