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Universal Health & Safety Plan For use on all high-risk,industrial and HAZWOPER projects Department of Toxic Substances Control Monitoring Procedures and Action Levels Parameter Zone Location and Action Level Response Activity Monitoring Interval >5 ppm ■ Cease work,exit the area or confined space,and contact the Site Safety Officer, Site Supervisor and Project Manager. ❑X Combustible Gas Breathing zone or in the immediate >5%of LEL ■ Cease work, exit, and contact the Site (multi-gas meter or work area continuously during Safety Officer, Site Supervisor, and individual combustible tasks where explosive Project Manager. gas indicator, CGI) atmospheres are possible ❑X Oxygen(02) Breathing zone, continuously < 19.5%02 ■ Cease work deficient atmosphere), exit (multi-gas detector or during tasks were oxygen enriched the area or confined space, and contact individual 02 meter) or deficient atmospheres are the Site Safety Officer, Site Supervisor, possible and Project Manager. >23.5%02 ■ Cease work enriched atmosphere), exit the area or confined space, and contact the Site Safety Officer, Site Supervisor, and Project Manager. ❑X Carbon Monoxide(CO) Breathing zone, continuously < 10 ppm ■ Continue work in Level D and continue (multi-gas detector or during tasks where exposure to monitoring individual CO meter) CO is possible > 10 ppm ■ Cease work,exit the area or confined space,and contact the Site Safety Officer, Site Supervisor, and Project Manager. ❑ Dust not otherwise Breathing zone every 30 minutes <5 mg/m3 ■ Continue work in Level D and continue classified during field activities where monitoring (total by aerosol monitor) exposure to excessive dusts are >5 mg/m3 ■ Upgrade to Level C(P100 respirator possible cartridges), implement dust suppression measures; contact the Site Safety Officer&Site Supervisor. > 10 mg/m3 ■ Cease activities, implement more effective dust suppression measures; contact the Site Safety Officer&Site Supervisor. ❑ Dust not otherwise Edge of Exclusion Zone, every 30 <5 mg/m3 ■ Continue work in required PPE, monitor classified minutes during excavation air, and implement engineering controls (total by aerosol monitor) activities >5 mg/m3 ■ Cease activities and contact the Site Safety Officer&Site Supervisor. ❑X Noise monitoring Working zone, continuously during >85 dBA ■ Always carry hearing protection tasks where exposure to noise when working near tracks. over 85 dBA is possible ■ Hearing protection is mandatory when working in any area where noise level is such that a raised voice is necessary to have a normal conversation. ■ Exposure limits are 85 dBA for 8 hours. ❑X Other: ■ Continue monitoring Wildfire Smoke(Attachment 0) ■ Continue work in the required PPE ■ STOP WORK and exit the work area or confined space ■ Contact the Site Safety Officer, Site Supervisor, and Project Manager ©AECOM Restricted Universal Heath and Safety Plan Template(S4(DSC)AM-209-FM-C) 9 Revision 12 September 9,2021 PRINTED COPIES ARE UNCONTROLLED.CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.