The
California Air Quality Districts are rapidly adopting
and implementing air quality regulations for the purpose
of limiting the emissions of volatile organic compounds
(VOCs) from organic solvent cleaning and from the
disposal of solvents and waste solvent materials. Solvents are defined as any liquid containing a volatile
organic compound which is used as a dissolver or
cleaning agent. The liquids are principally derived
from petroleum and include chlorinated hydrocarbons,
alcohols and mineral spirits.
The
rulings require that by specified dates, an owner or
operator will not use organic solvents for cleaning
operations that exceed set VOC content limits of 50
g/liter and in some cases 25 g/liter in repair and
maintenance cleaning. The South Coast Air Quality
Management district was the first to adopt this rule in
1999 and has since changed the limitation to 25
g/liter. The San Joaquin Valley Unified Air Pollution
Control District implemented their ruling of 50 g/liter
in late 2002. Bay Area Air Quality Management District,
Sacramento Metropolitan Air Quality Management District
and Ventura County Air Pollution Control District all
have issued similar rulings going into effect in mid
2003. The Ventura District is considering starting
their ruling at 25 g/liter.
In
order to comply with the rules, the manufacturer of any
organic cleaning fluid used in these Districts must
supply, either on the container, or on a separate
product data sheet, the name of the fluid,
manufacturer’s name, the VOC content, density and other
information as defined in the rule.
To
determine the VOC content of the organic cleaning fluid,
specified methods are described including those used by
the South Coast Air Quality Management District (SCAQMD)
in the adoption of rules 1171 and 1122. The SCAQMD
determined the most common and effective cleaners that
meeting these requirements are water-based or aqueous
cleaners that contain little or no VOCs. They created a
new class of solvent called a Clean Air Solvent, which
manufacturer’s can apply for certification provided the
cleaning liquid meet certain criteria: 1. A VOC
concentration of no more than 25 grams of VOC per liter,
2. Containing no compounds classified as Hazardous Air
Pollutants, 3. A composite vapor pressure that is no
more than 5 mm Hg of VOC at 68 °F and 4. Reactivity is
not higher than toluene. The analysis and approvals are
performed by the SCAQMD laboratories.
OzzyJuice® cleaning fluids manufactured by ChemFree are
SCAQMD Clean Air Certified and are therefore eligible
under the Air Quality rulings to be sold to facilities
in California. For complete rule information and
effective dates please visit the following web sites:
SCAQMD:
http://www.aqmd.gov/tao/cas/cas.html
San Joaquin Valley Unified Air Pollution Control
District:
http://www.valleyair.org/rules/currntrules/r4663.pdf
Bay Area Air Quality Management District:
http://www.baaqmd.gov/enf/complnce/ADVISOR/AD011303SC.HTM
Sacramento Metropolitan Air Quality Management District:
www.airquality.org - See Rules / Regulation 4, Rule
466
Ventura County Air Pollution Control District:
http://www.vcapcd.org/rules_division.htm#compdates