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Stockton Plating, Inc. Consultant: R. DaRosa <br /> Casefile: 910275 Sample Date: 12/09/92 <br /> Appendix A Page 4 of 6 <br /> Air Monitoring - Polishing and Buffina <br /> Name/Title/Notes, <br /> Chemical Analysis Sample Time Results PEL <br /> Bob Wardlaw, Polisher (minutes) (Mg/M3) (mg/m ) <br /> Calif. Room <br /> -Respirable dust 220 0.72 <br /> (plus metal analysis 140 1. 52 <br /> on the respirable TWA----- 1. 03 5. 0 <br /> fraction) <br /> -lead 220 <0. 003 <br /> 140 <0. 005 <br /> TWA-----<0. 004 0 . 05 <br /> -chromium 220 <0. 001 <br /> 140 <0. 001 <br /> TWA-----<0. 001 0. 5 <br /> -nickel 220 0. 028 <br /> 140 0. 035 <br /> TWA------0. 031 1. 0 <br /> -copper 220 0. 140 <br /> 140 0. 123 <br /> TWA------0. 133 1. 0 <br /> -zinc 220 0. 066 <br /> 140 0. 016 <br /> TWA------0. 047 5. 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 />