Contents Notes |
Results from dust collection system sample from ToxScan, Inc., 6 pages interpreted by Regional Water Quality Control Plant, Palo Alto, CA, August 22, 1997 -- Brake dust collection system sample results from USEPA Region 9 Laboratory, 7 pages. Laboratory reports of chemical extraction of 1997 brake wear debris sample obtained from cleaning of a brake dynamometer dust collection system. Tests included measurements of total copper, simple copper solubility in model western rain water, and sequential extraction of the sample by the method recommended by Tessier. |