Current through Register Vol. 41, No. 3, September 23, 2024
A. No owner or other person shall cause or
permit to be discharged into the atmosphere any VOC emissions from any solvent
cleaning operation employing industrial cleaning solvents in excess of both of
the following limits:
1. A VOC content limit
of 50 grams per liter (0.42 pounds per gallon) of industrial cleaning solvent
shall apply unless emissions are controlled by an emission control system with
an overall control efficiency of at least 85%; and
2. A composite vapor pressure limit of eight
millimeters of mercury at 20°C.
B. VOC emissions from the use, handling,
storage, and disposal of industrial cleaning solvents and shop towels shall be
controlled by the following work practices:
1. Open containers and used applicators shall
be covered.
2. Air circulation
around cleaning operations shall be minimized.
3. Used solvent and shop towels shall be
disposed of properly.
4. Equipment
practices that minimize emissions (including but not limited to keeping arts
cleaners covered and maintaining cleaning equipment to repair solvent leaks)
shall be implemented.
C.
In lieu of complying with the requirements of subsections A and B of this
section, a manufacturer of coatings, inks, resin, or adhesives may comply with
the following requirements:
1. Clean portable
or stationary mixing vats, high dispersion mills, grinding mills, tote tanks,
and roller mills by one or more of the following methods:
a. Use a cleaning solvent that either
contains less than 1.67 pounds per gallon of VOC or has a composite vapor
pressure no more than eight mmHg at 20°C;
b. Comply with the following work practices:
(1) Equipment being cleaned shall be
maintained leak free;
(2)
VOC-containing cleaning materials shall be drained from the cleaned equipment
upon completion of cleaning;
(3)
VOC-containing cleaning materials, including waste solvent, shall not be stored
or disposed of in such a manner that will cause or allow evaporation into the
atmosphere; and
(4) All
VOC-containing cleaning materials shall be stored in closed
containers.
c. Collect
and vent the emissions from equipment cleaning to a VOC emission control system
that has an overall capture and control efficiency of at least 80%, by weight,
for the VOC emissions. Where such reduction is achieved by incineration, at
least 90% of the organic carbon shall be oxidized to carbon dioxide.
d. Use organic solvents other than those
allowed in subdivision 1 a of this subsection provided no more than 60 gallons
of fresh solvent shall be used per month. Organic solvent that is reused or
recycled (either on site or off site) for further use in equipment cleaning or
the manufacture of coating, ink, or adhesive shall not be included in this
limit. All VOC-containing cleaning materials shall be stored in closed
containers.
2. When
using solvent for wipe cleaning, the owner shall not (i) use open containers
for the storage or disposal of cloth or paper impregnated with organic
compounds that is used for cleanup, or coating, ink, or adhesive removal and
(ii) store spent or fresh organic compounds to be used for cleanup or coating,
ink, resin, or adhesive removal in open containers.
3. Any manufacturer of coatings, inks, resin,
or adhesives that complies with subdivision 1 d of this subsection shall record
the following information each month for each cleaning material and shall
maintain the information at the facility for a period of five years:
(i) the total volume of fresh cleaning
solvent material used for equipment cleaningand
(ii) the total volume of cleaning solvent
material recovered for either on-site or off-site recycling.
D. The control
requirements for screen printing shall be either use of solvent technology at
4.2 pounds of VOC per gallon, or the use of a product with a vapor pressure of
eight mm Hg.
Statutory Authority: § 10.1-1308 of the Code of
Virginia; §§ 110, 111, 123, 129, 171, 172, and 182 of the federal
Clean Air Act (40 CFR Parts 51 and 60).
