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Geosyntec° <br /> cons rants <br /> operated only during the night-time hours, from approximately 11 PM through 10 AM each day. <br /> The SVE system is designed to automatically turn on and off. Routine check-ups are performed <br /> twice per week while system is in operation to take VOC measurements and refill the onsite <br /> electric generator with DEF. <br /> Task 6: Well Destructions <br /> Wells will be destroyed via shot perforation, backfilling with grout, and over drilling the upper 5 <br /> feet via hollow stem auger drilling methodology. The upper 5 feet will be backfilled with native <br /> soil and the surface patched to match the surrounding area. Some areas will require a hot patch <br /> asphalt surface finish. <br /> 43 Chemical Hazards <br /> The classes of chemicals that are known or suspected to be present that may be encountered <br /> while performing site work include the following: <br /> • Chlorinated volatile organic compounds (VOCs) <br /> • Oxidizers (potassium permanganate) <br /> Controls for these hazards are presented in the THAs included in Appendix B. A summary of <br /> these chemical hazards is presented in Appendix C. <br /> 4,4 Physical Hazards <br /> The following physical hazards have been identified associated with the work to be performed <br /> and the site conditions. <br /> • Cold Stress <br /> • Drilling (including Indoor) <br /> • Drum and Container Handling <br /> • Electrocution <br /> • Excavation/Trenching <br /> • Eye Injury <br /> • Fall Protection <br /> • Hand/Foot Injury <br /> • Heat Stress <br /> • Heavy Equipment <br /> • Knives/Blades <br /> • Lifting Heavy Loads <br /> • Lockout/Tagout <br /> SAC111 HASP-June 2023 7 6/23/2023 <br />