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Case Number 910275 Consultant: Richard DaRosa <br /> Appendix A Sample Date: 03/19/91 <br /> Page 7 of 14 <br /> Table 5 <br /> Bumper Grinding <br /> Name/Title/Notes/Chemical Sample Time Sample Results PEL <br /> Gary Hughes, Grinder <br /> - nickel 220 minutes 2 . 107 mg/m3 Cr-pPrL <br /> 144 minutes 1.430 mg/m3 <br /> time-weighted average 1 1. 839 mg/m3 ** 1. 0 mg/m3 <br /> - chromium 220 minutes 0. 103 mg/m3 <br /> 144 minutes 0. 052 mg/m3 <br /> time-weighted average 0. 083 mg/m3 0. 5 mg/m3 <br /> - copper 220 minutes 0. 461 mg/m3 <br /> 144 minutes 0. 403 mg/m3 <br /> time-weighted average 0.438 mg/m3 1. 0 mg/m3 <br /> ancisce Paz, Grinder <br /> - nickel 220 minutes 1. 851 mg/m3 <br /> 86 minutes 1. 232 mg/m3 <br /> time-weighted average 1. 677 mg/m3 ** 1. 0 mg/m3 <br /> - chromium 220 minutes 0. 055 mg/m3 <br /> 86 minutes 0. 031 mg/m3 <br /> time-weighted average 0. 048 mg/m3 0. 5 mg/m3 <br /> - copper 220 minutes 0. 339 mg/m3 <br /> 86 minutes 0. 249 mg/m3 <br /> time-weighted average 0. 314 mg/m3 1. 0 mg/m3 <br /> Michael Jack, Grinder <br /> - nickel 217 minutes 1. 842 mg/m3 <br /> 136 minutes 0. 668 mg/m3 <br /> time-weighted average 1. 390 mg/m3 ** 1. 0 mg/m3 <br /> - chromium 217 minutes 0. 069 mg/m3 <br /> 136 minutes 0. 040 mg/m3 <br /> time-weighted average 0. 058 mg/m3 0.5 mg/m3 <br /> copper 217 minutes 0. 525 mg/m3 <br /> 136 minutes 0. 171 mg/m3 <br /> time-weighted average 0. 389 mg/m3 1. 0 mg/m3 <br />