• Periodic review of existing inventory (Table 1).
• Review of new projects, experiments, etc. as noted in ES&H Manual Chapter 8010 Environmental Planning and Review

Three scrubbers are located in the TLA mezzanine area to treat exhaust generated by activities occurring in the Production Chem Room, R&D Chem Room, and Clean Room of the Test Lab. Annual maintenance activities are conducted by Facilities Maintenance to ensure proper operations. If required as acid processing demand increases, caustic can be injected into the scrubber system recirculated water basins to improve scrubber acid removal.

GHGs absorb infrared radiation and emit heat into the atmosphere. The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Sulfur Hexafluoride (SF6) is a GHG that used in experimental processes at Jefferson Lab. The lab's minimum requirements are consistent with the objectives of DOE Order 436.1 - Departmental Sustainability and DOE Order 232.2 - Occurrence Reporting and Processing of Operations Information. SF6 user responsibilities at Jefferson Lab include:

• Maintaining records of all SF6 purchases.
• Establishing and maintaining an accurate inventory of SF6.
• Establishing and implementing operating procedure(s) documenting equipment capacity and detailing a program for leak detection/repair and methods to recover and store when appropriate.
• Identifying and use of an authorized SF6 dealer/recycler when appropriate.
• Reporting any releases greater than 25 lbs. to the ES&H Reporting Officer (x7611).
• Reporting annual inventory to the Site Sustainability Manager.

Regulatory requirements exist for ODS that may be applicable to Jefferson Lab operations, including refrigerants such as R-11 and R-12 utilized for cooling systems at the facility. There are special requirements for handling, recycling, and disposal of these refrigerants under Section 608 of the CAA. These requirements include appropriate EPA training certification for technicians servicing air conditioning and refrigeration equipment; repair of leaking industrial and commercial refrigeration equipment; and maintaining service records that document the date, refrigerant charge amount, and disposal of equipment.

Radionuclides emissions are regulated under 40 CFR Part 61, Subpart H - NESHAP for Emissions of Radionuclides Other Than Radon from Department of Energy Facilities. Included within these regulations are requirements for emission monitoring and testing, emission compliance and reporting, and routine recordkeeping of activities associated with potential emissions as related to the annual effective dose equivalent (EDE) to the public.

Airborne emissions of radionuclides at Jefferson Lab are far below the regulatory limit of 10 mrem/yr to the maximally exposed member of the public. In addition, no emission point at the lab exceeds the regulatory threshold for a continuous monitoring program of 0.1 mrem/yr. Confirmatory monitoring is conducted and required annual reporting under 40 CFR 61 is performed based on very conservative emissions estimates. The procedure used to calculate this emission can be found in the RADCON Manual.

The Virginia DEQ regulates emergency and non-emergency generators in Virginia, under 9VAC5-80 Part II Article 6 - Permits for New & Modified Stationary Sources. Under these regulations, emergency generators are classified as stationary emissions sources that are used for emergency use only and do not individually exceed 500 hours of operation per year at a single stationary source. These hours of operations are tracked to ensure that Jefferson Lab does not exceed 500 hours per year thus maintaining status as emergency generators.