SACAQMD RULE 453 CUTBACK & EMULSIFIED ASPHALT PAVING MATS.          
LAST REVISED 08/31/82          

          SACRAMENTO METROPOLITAN AQMD                RULES AND REGULATIONS
        RULE   453   CUTBACK  AND  EMULSIFIED  ASPHALT  PAVING MATERIALS
                                    (Amended 8-13-81, 8-31-82)

                                              INDEX

          100 GENERAL
              101  PURPOSE
              110  EXEMPTION: USE OUTSIDE OF COUNTY
              111  EXEMPTION: USE AS PENETRATING PRIME COAT

          200 DEFINITIONS
              201  ASPHALT
              202  CUTBACK ASPHALT
              203  EMULSIFIED ASPHALT
              204  PENETRATING PRIME COAT

          300 STANDARDS
              301  CUTBACK ASPHALT
              302  EMULSIFIED ASPHALT

          400 ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)

          500 MONITORING AND RECORDS (NOT INCLUDED)

          100 GENERAL

              101  PURPOSE:   To  limit   emissions   of  volatile  organic
                   compounds from the use of cutback and emulsified asphalt
                   in paving materials, paving and maintenance operations.

              110  EXEMPTION: USE OUTSIDE OF COUNTY:    The  provisions  of
                   Sections  301  and  302 of this rule do 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 Sacramento, State of California.

              111  EXEMPTION:   USE   AS  PENETRATING  PRIME   COAT:    The
                   provisions of Section  301  of this rule do not apply to
                   the use of medium  cure cutback asphalt as a penetrating
                   prime coat until such time as  the Air Pollution Control
                   Officer determines that a suitable  substitute  material
                   is   available.   This   exemption  shall  be  evaluated
                   annually.

          200 DEFINITIONS

              201  ASPHALT:   Dark  brown  to black  cementitious  material
                   (solid, semi-solid, or liquid  in  consistency) of which
                   the main constituents are bitumens which occur naturally
                   or as a residue of petroleum refining.

              202  CUTBACK ASPHALT:  Paving grade asphalts  liquefied  with
                   petroleum distillate and conforming to specifications of
                   the  American  Society for Testing & Materials (ASTM) as
                   follows:

                           Rapid Cure   Type:   ASTM D2028-76
                           Medium Cure  Type:   ASTM D2027-76
                           Slow  Cure   Type:   ASTM D2026-72


              203  EMULSIFIED ASPHALT:    Rapid,  medium,  or  slow setting
                   grade as described under Section 94 of the January 1981,
                   State   of   California   Department  of  Transportation
                   Standard Specifications.

              204  PENETRATING PRIME COAT:  Any  application  of asphalt to
                   an absorptive surface to penetrate that surface, to bind
                   the   aggregate,   and/or   promote   adhesion   to  new
                   construction. Dust pallatives or tack coats shall not be
                   included in this definition.

          300 STANDARDS

              301  CUTBACK  ASPHALT:   A  person  shall not manufacture for
                   sale  nor  use  for  paving, road construction  or  road
                   maintenance any:
                   a.      Rapid or medium cure cutback asphalt;
                   b.      Slow  cure cutback  asphalt  containing  organic
                           compounds  which  evaporate  at 260oC (500oF) or
                           lower as determined by ASTM Method D402 or other
                           test  method  as approved by the  Air  Pollution
                           Control Officer.

              302  EMULSIFIED ASPHALT:  A  person shall not manufacture for
                   paving,  road  construction   or  road  maintenance  any
                   emulsified  asphalt containing organic  compounds  which
                   evaporate at  260oC  (500oF)  or  lower as determined by
                   ASTM Method D244, or other test method  as  approved  by
                   the Air Pollution Control Officer, in excess of:
                   302.1   Effective January 1, 1982:
                           a.  Slow setting type, 3% by volume.
                           b.  Rapid setting type, 3% by volume.
                           c.  Medium setting type for use with open graded
                               aggregate, 8% by volume.
                           d.  Medium  setting  type  for  use  with  dense
                               graded aggregate, 12% by volume.

                   302.2   Effective January 1, 1984:
                           a.  Medium   setting   type  for  use  with  any
                               aggregate, 3% by volume.