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Stockton Plating, Inc. Consultant: R. DaRosa <br /> Casefile: 910275 Sample Date: 12/09/92 <br /> Appendix A Page 6 of 6 <br /> Air Monitoring - Polishincr and Buffing (cont) <br /> Name/Title/Notes, <br /> Chemical Analysis Sample Time Results PEL <br /> Don Dacy, Polisher <br /> (minutes) (mg/m ) (mg/m3) <br /> -Total dust 212 4 . 60 <br /> (plus metal analysis) 184 4. 11 <br /> TWA----- 4 . 37 10. 0 <br /> -aluminum 212 0. 04 <br /> 184 0. 08 <br /> TWA----- 0. 06 10. 0 <br /> -chromium 212 0. 001 <br /> 184 0. 002 <br /> TWA------0. 001 0. 5 <br /> -nickel 212 0. 490 <br /> 184 0. 770 <br /> TWA------0. 620 1. 0 <br /> -copper 212 0. 090 <br /> 184 0. 310 <br /> TWA------0. 192 1. 0 <br /> Tom Maples, Polisher <br /> -Respirable dust 214 0. 00 <br /> (plus metal analysis 180 1. 14 <br /> on the respirable fraction) TWA----- 1. 14 5. 0 <br /> -Aluminum 214 <0. 030 <br /> 180 <0. 040 <br /> TWA-----<0. 040 10. 0 <br /> -chromium 214 <0. 001 <br /> 180 <0. 001 <br /> TWA-----<0. 001 0. 5 <br /> -nickel 214 0. 005 <br /> 180 0. 040 <br /> TWA------0. 020 1. 0 <br /> -copper 214 0. 007 <br /> 180 0. 020 <br /> TWA------0. 014 1. 0 <br /> This record of employee exposure(s) must be preserved and accessible in <br /> accordance with Calif Code of Regulations, Title 8 (T8CCR) Section 3204 . <br />