1 SCOPE.

This standard concerns certain chemicals whose use must be known to and approved by GM to assure compliance with U.S. and international regulations. Chemicals referenced in Section 4 are, or will be, prohibited by regula-tions. Chemicals referenced in Section 4.1.1 may be present if the designated approving department is notified in advance and gives written approval prior to PPAP submission. Chemicals referenced in Section 6 may be present if the designated approving department is notified. Designated approving departments are: Vehicle Engineering Centers Materials Engineering, Powertrain Materials Engineering, Allison Transmission Materials Engineering and Electro Motive Division Hazardous Material Review Committee. The attached form (GM1000M - Substance Report Form, located in the Appendix, Section A3) must be submitted for any material or part which contains the chemicals addressed in this document. Reference Appendix B for suggested process flow diagrams.