MENDOCINO COUNTY AIR QUALITY MANAGEMENT DISTRICT

RULE 6-500 - TESTING METHOD AND RECORD RETENTION

  1. All tests for asbestos content of serpentine material must use California Air Resources Board Test Method 435. If ARB Test Method 435 has been used to perform two or more tests on any one volume of serpentine material, whether by the same or a different person, the arithmetic average of these tests results shall be used to determine the asbestos content of the serpentine material.
  2. Both the supplier and the user of asbestos-containing serpentine material must retain for seven years a written record documenting the test results if the material is used for surfacing.