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s • Monitoring Requirements: Contact DFG to determine if a streambed alteration agreement (California Fish and Game Code Section 1603) is required for activities that may affect ephemeral drainages on the project site. If surveys of the vernal pools conclude that no vernal pool fairy shrimp or vernal pool tadpole shrimp exist in the vernal pools on the site, it would appear that fill activities would be authorized by the Corps under general permit (Nationwide Permit 26). • Person/Agency Responsible: Army Corps of Engineers and DFG. • Timing or Frequency of Monitorin Prior to excavation in phases containing ephemeral drainages or wetlands. Mitigation Measure_ Avoid filling or degrading waters of the United States, including wetlands, by redesigning the project's excavation boundaries to avoid as many of the vernal pools as possible. At a minimum, the excavation boundaries at the southwestern portion of the site shall be revised to exclude the concentration of vernal pools. • Monitoring Requirement: Show revised excavation boundary on the Improvement Plan. • Person/Agency Responsible: San Joaquin County Community Development Department. • Timing or Frequency of Monitoring: Improvement Plan. Mitigation Measure: Compensate for filling or degrading waters of the United States, including wetlands, if impacts are unavoidable. KRC Aggregate shall compensate for the loss by retaining a restoration ecologist to prepare a wetland mitigation and monitoring plan. • Monitoring Requirement: Prepare a wetland mitigation and monitoring plan. • Person/Agency Responsible: USFWS, DFG, Army Corps of Engineers. • Timing or Frequency of Monitoring: Prior to excavation in phases containing ephemeral drainages or wetlands. Mitigation Measure: Conduct summer surveys (June-July)for late-blooming special-status plants before initiating excavation activities in areas supporting vernal pool and seasonal wetland habitat. • Monitoring Requirement_ Conduct surveys. • Person/Agency Responsible: USFWS, DFG. • Timing or Frequency of Monitoring: Prior to excavation in phases containing vernal pools and seasonal wetlands. Mitiqation Measure: if special-status plant populations are located during field surveys, populations should be avoided to the extent possible. • Monitoring Requirement: Show revised excavation boundary excluding areas containing special- status plant populations on the Improvement Plan. • Person/Agency_Responsible: San Joaquin County Community Development Department. San Joaquin County OX-94-2/KRC Aggregate Community Development Page 26