EL DORADO COUNTY AIR QUALITY MANAGEMENT DISTRICT
RULE 224 - CUTBACK AND EMULSIFIED ASPHALT PAVING MATERIALS
(Adopted 9-16-91, Amended 9-27-94, Revised 6/6/94)
- APPLICABILITY: A person shall not discharge to the atmosphere volatile organic compounds (VOC's) caused
by the use or manufacture, mixing, storage and application of Cutback or Emulsified asphalt for paving, road construction
or road maintenance.
- EXEMPTIONS: The provisions of Rule 224.3 shall not apply to:
- The use of cutback asphalt or emulsified asphalt in the manufacturing of paving materials where such materials
are for immediate shipment and eventual use outside of the County of El Dorado, State of California, and where
such area is designated as attainment for the State and Federal Ozone Standard.
- ASPHALT - A dark brown to black cementitious material (solid, semisolid, or liquid in consistency) of
which the main constituents are bitumens which occur naturally or as a residue of petroleum refining.
- CUTBACK ASPHALT - "Cutback asphalt" means asphalt cement that has been liquefied by blending
with petroleum solvents (diluents). Upon exposure to atmospheric conditions, the diluents evaporate, leaving the
asphalt cement to perform its function. Paving grade asphalt liquified with petroleum distillate and conforming
to specifications of the American Society for Testing and Materials (ASTM) as follows:
- Rapid Cure Type: ASTM D2028-76 (1986)
- Medium Cure Type: ASTM D2027-76 (1986)
- Slow Cure Type: ASTM D2026-72 (1985)
- DUST PALLIATIVE - Means any light application of liquified asphalt (cutback or emulsified asphalt) for
the express purpose of controlling loose dust.
- EMULSIFIED ASPHALT - "Emulsified asphalt" means an emulsion of asphalt cement and water that
contains a small amount of an emulsifying agent; it is a heterogeneous system containing two normally immiscible
phases (asphalt and water) in which the water forms the continuous phase of the emulsion and minute globules of
asphalt form the discontinuous phase.
- PAVING MATERIAL - A mixture consisting mainly of an asphalt and aggregate.
- PAVING AND MAINTENANCE OPERATIONS - All activities involved in the new construction and maintenance
of roadways and parking areas.
- PENETRATING PRIME COAT - "Penetrating prime coat" means an application of low-viscosity liquid
asphalt to an absorbent surface. It is used to prepare an untreated base for an asphalt surface. The prime coat
penetrates the base, plugs the voids, and hardens and helps bind the top to the overlying asphalt course. The penetrating
prime coat also reduces the necessity of maintaining an untreated base course prior to placing the asphalt pavement.
Prime coats do not include dust palliatives or tack coats.
- TACK COAT - Means any application of asphalt to an existing surface to provide a bond between new surfacing
and existing surface and to eliminate slippage places where the new and existing surfaces meet.
- VOLATILE ORGANIC COMPOUND (VOC) - Means any volatile compound of carbon, excluding:
and the following four classes of perfluorocarbon (PFC) compounds:
- carbon monoxide,
- carbon dioxide,
- carbonic acid,
- ammonium carbonate,
- metallic carbides,
- metallic carbonates,
- methylene chloride,
- trichlorofluoromethane (CFC-11),
- dichlorodifluoromethane (CFC-12),
- chlorodifluoromethane (HCFC-22),
- trifluoromethane (HFC-23),
- 1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113),
- 1,2-dichloro-1,1,2,2-tetrafluoroethane (CFC-114),
- chloropentafluoroethane (CFC-115),
- 2,2-dichloro-1,1,1-trifluoroethane (HCFC-123),
- 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124),
- pentafluoroethane (HFC-125),
- 1,1,2,2-tetrafluoroethane (HFC-134),
- 1,1,1,2-tetrafluoroethane (HFC-134a),
- 1,1-dichloro-1-fluoroethane (HCFC-141b),
- 1-chloro-1,1-difluoroethane (HCFC-142b),
- 1,1,1-trifluoroethane (HFC-143a),
- 1,1-difluoroethane (HFC-152a),
- cyclic, branched, or linear, completely fluorinated alkanes,
- cyclic, branched, or linear, completely fluorinated ethers with no unsaturations,
- cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations, and
- saturated perfluorocarbons containing sulfur with sulfur bonds only to carbon and fluorine.
- Cutback Asphalt: A person shall not manufacture for sale nor use for paving, road construction or road
- Rapid cure cutback asphalt.
- Medium cure cutback asphalt except as provided in Rule 224.1.B.
- Slow cure cutback asphalt containing more than 0.5 percent by volume organic compounds which evaporate at 2600C
(5000F) or lower as determined by ASTM Method D402-76 (1987).
- Emulsified Asphalt: A person shall not manufacture for paving, road construction or road maintenance
any emulsified asphalt containing organic compounds in excess of three percent by volume which evaporate at 2600C
(5000F) or lower as determined by ASTM Method D244-91.
- Test Methods:
- a. Analysis of Cutback Asphalt samples for VOC content shall be in accordance with ASTM Method D402-76 (1987).
- b. Analysis of Emulsified Asphalt samples for VOC content shall be in accordance with ASTM Method D244-91,
in excess of three percent by volume.
- Recordkeeping: Any person who manufactures cutback asphalts and or emulsified asphalts shall maintain
records showing the types and amounts of these products produced and shipped, including the destinations of these
products. Test method results should also be recorded.
Any person who sells, offers for sale, uses or applies for paving any asphalt material subject to this rule shall
maintain a record of the amount received, sold and/or used and a current list of all asphalt materials in use and
Material Safety Data Sheets (MSDS) or manufacturer specifications for each asphalt material containing sufficient
information to readily determine compliance with Subsections 224.3.A and 224.3.B of this rule, as applicable.
These records shall be maintained daily and kept on site for at least three years and made available to the
District upon verbal or written request.