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a <br /> • Inducement of fluids (e.g., water, Gatorade, etc.), the equivalent quantity of 1 quart of water per <br /> hour per on-site personnel ivilfbe available before work begins (ref. T8 CCR §3395(c) Heat Illness <br /> Prevention) unless provisions 'for immediate water replenishments are available (nearby store, <br /> plumbed water supply, etc.). Water shall always be replenished BEFORE running out. <br /> The implementation frequency of these measures will be the responsibility of the Project Manager and- <br /> or <br /> or SSO. ,: I <br /> 3.7 Chemical Hazard - Portland Cement <br /> Detailed information regarding their physical description; health hazards, including routes of entry into <br /> the body, signs and symptoms of exposure, and target organs; published exposure limits (TWA, STEL, <br /> ceiling; and IDLH concentrations); chemical and physical properties; and incompatibilities are <br /> available in the chemical guides in Attachment A. The chemical guides are published by the National <br /> Institute for Occupational Safety and Health(NIOSH) 2005 a F <br /> - i <br /> Type(s)/Source: Bentonite grout(Portland cement) i <br /> Qualified Exposure Risk: Low - hazardous exposure to Portland cement during well grouting <br /> [destruction] is considered to be low during this project due to safe work <br /> practices to be employed. <br /> Exposure Route: Inhalation;ref:Attachment A - N10SH.Guide to Chemical Hazards - <br /> Part land Cement <br /> Exposure signs/symptoms: .Refer to Attachment A <br /> i <br /> Hazard Control(s):, <br /> i <br /> • Isolation—site control <br /> • Engineering Controls—safety work practices; wet methods/materials. <br /> • PPE—eye(safety glasses orgoggles)a-nd,hand protection(leather and/or impermeable gloves) i <br /> • Good sanitation and personal hygiene; see Section 4.2. <br /> i <br /> PUBLISHED EXPOSURE LIMITS <br /> CHEMICAL NAME AND CA_S# ROUTE OF ENTRY s <br /> CATEGORY CONCENTRATION SOURCES <br /> Portland Cement PEL/TLV-TWA 10 mg/m3 total dust Cal/OSHA <br /> Particulates not otherwise Inhalation PEL-TWA 5 mg/tn'respirable&action ACGIH <br /> Deal TL <br /> m /m3classified V- WA 3 <br /> respirable fraction <br /> 4.0 GENERAL HEALTH AND SAFETY REQUIREMENTS <br /> 4.1 Air Monitoring <br /> The potential for hazardous concentrations of airborne cement dust or organic vapors from grouting <br /> operations is not anticipated for the well destruction tasks covered under this Plan; therefore air <br /> monitoring is not justified. <br /> # Shop 10 MS,Task Order No.94 Caltrans Contract No.06A t 141,EA 43-910076 . <br /> Project No. S9200-06-94 _10- July 2010 <br />