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

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Infiltration<br />

Air<br />

Office Area<br />

Pig<br />

Pig<br />

Foundation with impermeable geo-membrane<br />

Figure 1.1-1: Illustration of Ventilation System<br />

The HVAC system for the office area consists of a roof-mounted, air conditioning unit, exhaust<br />

fans, air distribution ductwork, and HVAC system controls. The system will be powered by onsite<br />

produced electricity. The HVAC system will strive to maintain a comfortable indoor<br />

temperature, typically 75°F or below. Air makeup will maintain the office under positive<br />

pressure relative to the outdoor environment and plant spaces.<br />

Motor Control Center Room<br />

Building Envelope<br />

Pig<br />

The HVAC system for the MCC Room consists of a roof-mounted, air conditioning unit, air<br />

distribution ductwork, and HVAC system controls. The system will be electric. The HVAC<br />

system will strive to maintain a target indoor temperature of 75°F or below. The MCC Room<br />

will be maintained under positive pressure relative to the surrounding building areas.<br />

Elemental Mercury Storage Area<br />

The HVAC system for the elemental mercury storage area consists of two, roof-mounted, air<br />

conditioning units, air distribution ductwork, and HVAC system controls. The HVAC system is<br />

designed to typically maintain a target indoor air temperature of 70°F or below. Heating, unless<br />

necessary for worker comfort, will not typically be provided in the elemental mercury storage<br />

area during the winter months, unless necessary. The elemental mercury storage area will also be<br />

maintained under negative pressure, in common with the rest of the plant spaces.<br />

Clean Storage and Maintenance Area<br />

Pig<br />

AC Filter<br />

Ventilation<br />

Process Containers<br />

Office<br />

Infiltration<br />

Air<br />

The HVAC system for the Clean Storage and Maintenance Area consists of a roof-mounted, air<br />

conditioning unit, air distribution ductwork, and HVAC system controls. The HVAC system will<br />

be designed to maintain a target indoor air temperature at 70°F or below. Heating will not<br />

PMR <strong>RCRA</strong> <strong>Permit</strong> <strong>Application</strong>, <strong>Dry</strong> <strong>Hills</strong> Facility Page 13<br />

JBR Environmental Consultants, Inc. | HATCH March 2013

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