STANDARD SPECIFICATION PART 1
CRUSHED ROCK FOR BELOW GROUND INSTALLATIONS A. Gravel or crushed rock material shall contain less than 1% asbestos by weight or volume and conform to the Standard Specifiions for Public Works Construction, Section and shall meet the following gradation: Designated Rock Size 11/2Inch 1Inch 3/4Inch 3/8Inch Sieve Sizes Percent