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Geosyntec clnt,Main, 4. PRE-FIELD At TIVITES Prior to initiating intrusive fieldwork at the Site, pre-field activities will be completed including revising the Site Health and Safety Plan, procuring permits and property access approvals, and conducting a utility survey in the area of the proposed injections. These pre-field activities are discussed in this section. 4.1 Health and Safety Plan Addendum Current field conditions will be reviewed by staff before commencing field activities. The assessment will include the following items: • Evaluating health and safety concerns with respect to KMnO4 handling and storage; • Evaluating existing and previously existing utilities in relation to the proposed injection points; • Ensuring safe access and movement within the work area; • Securing work areas with barricades or temporary fencing, as applicable; • Determining operational and traffic safety requirements; and • Assessing general health and safety hazards presented in this scope of work. After a review of the field conditions has been completed, a Site-specific task hazard analysis (THA)will be prepared to supplement the existing Site Health and Safety Plan(HASP). The THA will ensure safe work practices to prepare for and minimize the possible hazards to human health and to the environment resulting from handling and transporting KmnO4 and performing the drilling and injection activities. Hazards and controls developed in the HASP addendum will be communicated with all field personnel and local fire officials prior to executing the scope of work. Storage of KMnO4 during the treatment process will be done in compliance with applicable rules and regulations, including the California Fire Code (CCR Title 24, Part 9) and Department of Homeland Security requirements. 4.2 Permitting and Access The injection activities will be completed solely on property owned by Lincoln Properties, Ltd. (LPL)under the existing access agreement between LPL and the Trust. Geosyntec will notify and gain approval from LPL regarding the proposed scope of work, work hours, and schedule in advance of field implementation.To minimize interruption to business activities at the Site during regular business hours, Geosyntec plans to implement the injections at night during non-business hours. The following permits will be procured prior to implementation of the Work Plan: Former Source Area Injection Work Plan 8 August 08,2019