Section Env-A 1218.02 - Compliance Standards for Cutback and Emulsified Asphalt(a) Cutback asphalt shall not be used in the paving and maintenance of public roads and highways during the months of June through September with the following exceptions: (1) The use of medium curing cutback asphalts solely as penetrating primecoat for aggregate bases prior to paving;(2) The use of medium curing cutback asphalts for the manufacture of long-term storage or stockpiling of patching mixes used in pavement maintenance; or(3) The use of cutback asphalts for which the user can demonstrate, in accordance with (b), below, that minimal emissions shall occur under conditions of normal use.(b) For a cutback asphalt user seeking an application permit during the months of June through September, an acceptable demonstration of minimal emissions shall be the submittal of distillation test data in accordance with ASTM D402-97, "Standard Test Method for Distillation of Cutback Asphaltic (Bituminous) Products", showing that less than 5% of the total solvent has evaporated at temperatures up to and including 260C, equivalent to 500F.(c) Emulsified asphalt used in the paving and maintenance of public roads and highways shall contain no petroleum solvents except for uses and with a maximum solvent content (MSC) as follows: (1) For use as seal coats, the MSC shall be 3%;(2) For use as chip seals when dusty or dirty aggregate is used, the MSC shall be 3%;(3) For use as seal coats or chip seals when good particle coating cannot be attained with emulsions containing 3% or less solvent, by weight, when tested according to the ASTM D244-00 "Standard Test Methods for Emulsified Asphalts", Coatability Test, Sections 52 through 57, by the New Hampshire department of transportation (NHDOT) or an independently owned laboratory designated by the NHDOT, the MSC shall be 5%;(4) For use as mixing with open graded aggregate that is not well washed, the MSC shall be 8%; or(5) For use as mixing with dense graded aggregate, the MSC shall be 12%.N.H. Code Admin. R. Env-A 1218.02
(See Revision Note at chapter heading for Env-A 1200) #9933, eff 6-1-11
Amended by Volume XXXIX Number 46, Filed November 14, 2019, Proposed by #12899, Effective 10/17/2019, Expires 10/17/2029