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(a) Sampling and Analysis Workplan. The Agency may submit a workplan that describes the activities proposed to characterize soil, groundwater and/or surface water contamination associated with the Property or group of Properties. The Agency will exercise its best efforts to provide access for DTSC and its representatives to the Property or group of Properties prior to approval of the workplan, if necessary. For any sampling activities to be conducted, the workplan should also include a quality assurance/quality control plan (QA/QP), sampling plan, and implementation schedule. DTSC will review the Sampling and Analysis Workplan and QA/QP and will advise the Agency in writing within the period specified in Exhibit E of either DTSC's approval of such plans or DTSC's requirements for approval of the plans. In the event the Agency agrees to proceed with an approved Sampling and Analysis Workplan for a Property or group of Properties, the Agency will implement the approved workplan in accordance with the approved implementation schedule. DTSC may provide oversight of workplan implementation. All field work must be conducted in accordance with applicable Cal-OSHA regulations set forth in California Code of Regulations, Title 8, including but not limited to section 5192 and applicable DTSC guidance. The Sampling and Analysis Workplan and QA/QP may, in appropriate circumstances, be combined with other documents prepared by or on behalf of the Agency as approved by DTSC. (b) Site Characterization Report. The Agency may submit a Site Characterization Report that, at a minimum, presents the data, summarizes the findings of the investigation, validates data and includes recommendations and conclusions. DTSC will review the Site Characterization Report and will advise the Agency in writing, within the period specified in Exhibit E, of either DTSC's approval of such report, or DTSC's requirements for approval. The Site Characterization Report may, in appropriate circumstances, be combined with the Remedy Selection Document or Remedial Action Plan referred to in Task 6 or included with other documents prepared by or on behalf of the Agency. TASK 4. Risk Evaluation and Cleanup Level Determination. If the Agency decides to proceed with a remedy or removal action, a scoping meeting may be held to discuss how the risk evaluation and cleanup level determination will be conducted for the Property or group of Properties. If appropriate, the Agency may conduct a risk evaluation consistent with U. S. EPA Risk Assessment Guidance for Superfund (EPA/540/1-89/002) and DTSC's Supplemental Guidance for Human Health Multimedia Risk Assessments of Hazardous Waste Sites and Permitted Facilities. This evaluation should identify the chemicals of concern and potential routes of exposure; characterize 15 of 31