The United States is among the most heavily regulated countries in the world for environmental protection. The US Environmental Protection Agency and the South Coast Air Quality Management Division are often modelled for their stringent regulatory practices and the rules by which air, water and land are protected. As of January, 2008, the US EPA published the finalized National Emission Standards for Hazardous Air Pollutants: Code of Federal Regulations, Title 40 (Protection of the Environment), Chapter 1 (EPA), Subchapter C (Air Programs), Part 61 (National Emission Standards for Hazardous Air Pollutants) and Part 63 (NESHAP for Source Categories).
A permitted source of emission must maintain documentation of compliance. Every source category outlines the requirements for notification, record keeping and reporting. Documentation must be maintained on file for 5 years; the most recent 2 years must be stored on site and made readily available for inspection. EPA summary brochures are available at the US EPA Office of Air and Radiation Technology Transfer Network.
ANDREAE FILTERSare compliant with 40CFR63-6H which states that all spray booth filter media used for the purposes of exhaust must be at least 98% efficient. Andreae Filters are tested using ASHRAE 52.1* as per the specific paint test parameters outlined in 40CFR63.11173(e)(2)(i).
Andreae Filters are compliant as pre-filters only with 40CFR63 Subpart GG (National Emission Standards for Aerospace Manufacturing and Rework Facilities). This subpart applies to facilities that are engaged in the manufacture or rework of commercial, civil or military aerospace vehicles or components and that are major sources of HAP, VOC and/or inorganic HAP emissions (>10 tons/yr). Aerospace NESHAP states that all spray booths built after 1999 require a 3 stage filtration system. However, there has been interpretation stating that if the final stage is certified efficient using Test Method 319, then only one stage is possible as may be found in a HEPA filter. Scope and Application further states that pre-filters need not be tested but rather "also pass filtration requirements" when the final stage is tested and certified efficient.
The Scope and Application of Method 319, 1.3 states:
"For a paint arrestor system or subsystem which has been tested by this method, adding additional filtration devices to the system or subsystem shall be assumed to result in an efficiency of at least that of the original system without the requirement for additional testing. (For example, if the final stage of a three-stage paint arrestor system has been tested by itself, then the addition of the other two stages shall be assumed to maintain, as a minimum, the filtration efficiency provided by the final stage alone. Thus, in this example, if the final stage has been shown to meet the filtration requirements of Table 1 of 63.745 of subpart GG, then the final stage in combination with any additional paint arrestor stages also passes the filtration requirements.)"
*ASHRAE 52.1-1992 has been superseded by and incorporated in ASHRAE 52.2-2007