SR0085423 (3) - Laserfiche WebLink

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Geocon Project No. S2170-07-12 - 15 - June 6, 2022 Note: Readings exceeding 500 ppm at the sampling point – suspend sampling activities until conditions can be further assessed. If corrective action cannot be taken, site personnel must remain up-wind or move to a predetermined safe area and contact the Project CIH. The PID shall be calibrated both before and after field operations, or more frequently as deemed necessary by the PSO. The instrument will be calibrated and maintained in accordance with the manufacturer’s instructions. The calibration gas and the calibration readings (in ppm equivalent) shall be recorded in the field log book. It should be noted that high humidity environments can cause a PID instrument to indicate lower organic vapor concentrations than actually exist. 4.1.2 Lead Industrial hygiene monitoring will not be performed for inorganic lead sampling tasks being carried out for this project. Previous Negative Exposure Assessments for representative direct-push soil sampling tasks and characterization activities, using similar controls document exposures consistently below the 30 µg/m3 Action Level for inorganic lead [ref. T8 CCR §1532.1(d)(5)(A)]. 4.2 Personal Hygiene The PSO will establish on-site sanitation procedures which may, depending on site tasks and conditions involve: hand-wash facilities including clean water and hand soap; waterless hand cleaner; sanitary wipes and clean towels at the project site. All Geocon personnel, subcontractor employees, and Clients and their designees leaving the project site (work zones) will clean potential impacted soils from their footwear and follow personal hygiene procedures prior to leaving the project site. In addition, the following procedures will be followed to ensure worker protection against potential exposure through ingestion: • Eating, drinking, chewing gum or tobacco, smoking, or any practice that increases the probability of hand-in-mouth transfer and ingestion of material is prohibited in any area designated as being potentially impacted. • Hands and face must be thoroughly washed upon leaving the work area, and before eating, drinking, or other non-project activities. • Avoid unnecessary kneeling, sitting, leaning, or general contact with potentially impacted surfaces or with surfaces suspected of being potentially impacted by hazardous materials (i.e., puddles, mud, leachate, etc.).