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0 <br />Proposal for <br />Various Environmental Services <br />Page 19 <br />August 1, 2022 <br />the regulatory agencies unless directed by the client. The initial review and discussions with City may <br />lead to Phase II ESAs. <br />Preparation of Work Plan <br />If the Phase II ESA is warranted, A -Tech will prepare a work plan by focusing on the City's specific <br />requirements and in accordance with ASTME1903-19. The purpose of the work plan is to have a clear <br />and concise scope of work and the corresponding protocols and methodologies for implementation in <br />accordance with acceptable regulatory guidelines. After review of the work plan by the City, it is <br />submitted to the oversight agency for approval before it can be implemented. <br />Permitting <br />Most of the environmental investigation and remediation activities require permitting from various <br />agencies. Certain soil investigations that do not reach groundwater may not require permitting. Most <br />permits are obtained over the counter but permits related to remediation take time depending on the <br />scope. In Orange County a subsurface investigation requires Well Construction, Well Destruction, Test <br />and Exploratory Hole permit from the Orange County Health Care Agency if 1) the boring is deeper than <br />50 feet (ft); 2) the boring encounters groundwater, and 3) the boring will be open for more than 24 <br />hours. If requested by the City, A -Tech would prepare the application and proceed with securing the <br />permits. Some regulatory agencies may require a work plan along with the application for permitting. <br />Subcontractor Selection <br />A -Tech prepares the scope of the work that will be performed by subcontractors (drillers, geophysics, <br />etc.) and requests three subcontractors to bid on. A -Tech recommends the most qualified subcontractor <br />to the City for approval. A -Tech enters into a subcontract agreement with the selected contractor and <br />requires the subcontractor to fulfill the insurance requirements of the City and A-Tech's stringent health <br />and safety requirements. <br />Work Plan Implementation <br />Prior to starting the field work, the City and appropriate regulatory oversight agency will be notified in <br />case inspection is required. A copy of the work plan and health and safety plan will be available on the <br />field. All subcontractors will be required to follow health and safety requirements including their own <br />and any requirements imposed by the City. Daily health and safety briefing will be performed prior to <br />any field work. Daily progress reports will be sent to the City's designated project manager. <br />Data Evaluation and Reporting <br />Upon receipt of analytical data, A -Tech performs an evaluation and interpretation of the data in the <br />context of the regulatory screening levels and guidance provided by the EPA, DTSC, and RWQCBs. The <br />findings determine which of the following course of action is required: <br />■ No further action needed; in which case the report will request site closure. <br />■ Additional investigation is needed to further delineate the extent of Chemicals of Potential <br />Concern (COPCs). <br />■ Investigation is completed but remediation is required. <br />ow A -Tech Consulting, Inc. <br />