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SOLANO COUNTY WATER AGENCY. F e b r u a r y 2 0 0 7. Section 1 - Introduction. Addition of two new Plan Participants: Dixon Resource Conservation District (RCD) Dixon Regional Watershed JPA Change in the Plan Area Boundary 7,670 acres of Yolo County.

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F e b r u a r y 2 0 0 7

section 1 introduction
Section 1 - Introduction
  • Addition of two new Plan Participants:
    • Dixon Resource Conservation District (RCD)
    • Dixon Regional Watershed JPA
  • Change in the Plan Area Boundary
    • 7,670 acres of Yolo County
section 2 project description covered activities
Section 2 – Project Description/Covered Activities
  • Update of land use conditions
  • Section 2.2: Updated the project descriptions and proposed land conversion maps (Figures 2-2 - 2-8).
  • Total Planned Development dropped from 20,260 to 16,910 acres (See Table 2-8).
    • New Development Projects
    • Development Agreements
    • Development in Travis Reserve Area removed as a Covered Activity.
  • Updated Covered Activities Zones
    • Zone 1: changes to urban limit lines for Dixon and Suisun
    • Zone 2: now includes SID potential annexation areas and service areas of new Plan Participants.
section 3 environmental setting biological resources
Section 3 – Environmental Setting/Biological Resources
  • Update Covered Species list (went from 77 to 71 Covered Species). Species removed from the list were:
      • Ray less Ragwort (VP)
      • Streamside Daisy (ICR)
      • Brewer's Western flax (ICR)
      • Cooper’s Hawk (ICR)
      • Sharp-shinned Hawk (ICR)
      • Golden Eagle (ICR)
  • Added discussion of the Collinsville-Montezuma Hills Wind Resource Area to the Risk Analysis (Section 3.6)
section 4 conservation analysis
Section 4 – Conservation Analysis
  • Old Section 4 split into two sections: Conservation Analysis and Conservation Strategy.
  • Added flow diagram to provide an overview of the Conservation Analysis (Figure 4-1)
  • Moved Background Information and Conceptual Models to Appendix B.
  • Section previously known as the conservation approach for each NC was divided into 3 sections:
    • Key Conservation Elements (used in landscape level conservation analysis Section 4.4)
    • Conservation Areas (used in Section 5.0)
    • Reserve Design and Conservation Approach (Section 4.6)
section 4 conservation analysis1
Section 4 – Conservation Analysis
  • Landscape Level Conservation Analysis. Changes to and additions of key conservation elements:
    • Major ridgelines connecting known Johnny jump-up and callippe silverspot butterfly occurrences buffered by 300 feet (Figure 4-13).
    • Burrowing owl records buffered by 1/3 of a mile.
    • We buffered the Swainson’s hawk nest records by a 1/4 of a mile instead of 2 miles to reflect nesting territories.
  • Removed the analysis combining the Risk Analysis (Section 3.0) and the Landscape Level Conservation Analysis (Section 4.4) (AKA: Priority Areas for Future Protection)
section 4 conservation analysis2
Section 4 – Conservation Analysis
  • We expanded the Conservation Targets section (Section 4.5) and moved it to the end of the chapter.
  • Expanded the Reserve Design Section (Section 4.6):
    • Includes a more thorough discussion for each Natural Community
    • Outlines reserve design criteria specific to each natural community or Covered Species
    • Discussion of how the results of the Conservation Analysis are used to develop the Conservation Strategy (Section 5.0).
section 5 conservation strategy
Section 5 – Conservation Strategy
  • Section 5.1.1 Mitigation Standards
    • Provides more thorough definition of “Maximum Extent Practicable” and examples of how this working definition can be applied.
    • Provides a list of some of the standards and comparables for mitigation requirements.
    • Explanation of how the conservation and mitigation measures in the Solano HCP were derived by balancing the biological and conservation needs (i.e. from information in Appendix B and Section 4.0) with cost (when available), logistical, technological, and equity considerations from the Solano HCP MEP definition.
section 5 conservation strategy1
Section 5 – Conservation Strategy
  • Goals and Objectives:
    • For each NC there are 2 goals,
      • 1st goal deals with preserving the general NC and contain a series of sub-goals, followed by objectives.
      • 2nd goal deals specifically with maintaining and protecting populations of the Covered Species and is followed by species specific objectives.
    • For Individual Species Sections (ex. CRLF or SWHA)
      • One main goal: to protect and maintain the ecological integrity of suitable habitats and promote the continued existence and expansion of the species within the Plan Area.
      • Followed by a series of Sub-Goals and Objectives.
section 5 conservation strategy2
Section 5 – Conservation Strategy
  • Throughout Section 5.0 we have tried to consistently link the goals, objectives and conservation measures back to Section 4.0. Specifically to:
    • Reserve Design Criteria (Section 4.2)
    • Conservation Areas identified in Section (4.3)
    • Conservation Targets (Section 4.5)
    • Reserve Design and Conservation Approach (Section 4.6)
  • Summary Tables
    • Short summary tables at the end of each goals and objectives section, linking the goals with the reserve design principles, other conservation criteria from Section 4.0, objectives and conservation measures.
    • Long summary tables at end of Section 5.0 linking goals, objectives and conservation measures to:
      • Conservation Analysis (Section 4.0)
      • Adaptive Management and Monitoring Program (Section 6.0)
      • Plan Implementation (Section 9.0).
section 5 conservation strategy3
Section 5 – Conservation Strategy

Valley Floor Grassland and Vernal Pools

  • Anticipated preserve area dropped from between 11,000 to 15,000 acres to between 8,700 to 9,400 acres. (from decrease in planned development (See Sections 2.0 and 7.0).
  • Re-defined the species occurrences based on the definition in the Vernal Pool Recovery Plan, buffered by ¼ mile (this resulted in a decrease in the total number of occurrences for each species).
  • Revised and clarified High, Medium and Low Value Conservation Areas
section 5 conservation strategy4
Section 5 – Conservation Strategy

Valley Floor Grassland and Vernal Pools

  • We revised Conservation Measure VPG 8, Habitat Mitigation, to more closely reflect the Vernal Pool Recovery Plan. Key changes include:
    • Subareas 1A – 1F and 1I – 1L: 9:1 (mitigation: impact) preservation
    • Subareas 1G and 1H: 5.7:1 preservation (this decrease is a reflection of the 85% recovery goal for the Suisun Marsh Core Area).
    • 1:1 restoration in all categories (decreased from 2:1 in high value areas). This was based on cost considerations.
section 5 conservation strategy5
Section 5 – Conservation Strategy

Valley Floor Grassland and Vernal Pools

  • Modified Conservation Measure VPG 15:
    • Outlines Development Criteria for Core Contra Costa Goldfield Population Areas versus specific acreage limits as in version 2.1.
  • Added Conservation Measure VPG 16:
    • Adds additional restoration requirements to impacts to extant stands of Contra Costa Goldfields within Core Population Areas.
section 5 conservation strategy6
Section 5 – Conservation Strategy
  • Inner Coast Range
    • Goals and objectives were left in, but are now optional
    • Conservation Measures were removed
  • Riparian, Stream and Freshwater Marsh Section:
    • More detailed avoidance and minimization measures.
    • Refinement of mitigation requirements (Conservation Measure RSM 11) based on the identification and refinement of Conservation Areas outlined in Section 4.0
    • Additional Species-Specific objectives and conservation measures were added.
  • Giant Garter Snake
    • Habitat mitigation was added for certain areas within Rio Vista (Conservation Measure GGS 5), (required by USFWS for a recent project in Rio Vista)
  • Coastal Marsh
    • more detailed avoidance and minimization measures
    • more species-specific conservation measures.
section 5 conservation strategy7
Section 5 – Conservation Strategy
  • Swainson’s Hawks:
    • Changes were made to the acceptable reserve areas (i.e. exclusion of the Collinsville-Montezuma Hills Wind Resource Area)
    • Removed the Tree Removal Conservation Measure and replaced it with a straight per acre impact fee to cover the cost of planting and protecting 1 potential nest tree for each acre of habitat lost.
  • Burrowing Owl
    • Updated reserve design criteria for agricultural areas: 1 acre of habitat per 80 acres of reserve land devoted to providing suitable nesting and cover habitat with at least 2 maintained burrow complexes.
section 6 0 adaptive management and monitoring
Section 6.0 - Adaptive Management and Monitoring
  • Added Section 6.3 and Figure 6-2
    • Provides more detail on the structure of the adaptive management and monitoring program.
      • The portion to be implemented by SCWA over the entire Plan Area.
      • The portion to be implemented on individual reserves as a responsibility of mitigation banks and private project specific mitigation lands.
section 7 0 impact assessment
Section 7.0 – Impact Assessment
  • Actual anticipated habitat loss from development dropped from approximately 18,000 acres to 13,000 acres. The decrease was due to:
    • New development projects
    • Development agreements
    • Removal of potential development within Travis Reserve.
  • The summary tables were divided into separate tables for each Natural Community to make them easier to read.
section 9 0 plan implementation
Section 9.0 – Plan Implementation
  • Added more detail and clarification on Plan Governance and the Roles and Responsibilities of involved parties (Section 9.2)
  • Expanded the section on the development of the reserve system:
    • added more detail on reserve design criteria and reserve management.
  • The incorporation of pre-approved projects into the plan was added to the list of minor amendments.
appendix a routine operational and maintenance activities
Appendix A - Routine Operational and Maintenance Activities
  • More detail was added to the type, location and frequency of operations and maintenance activities
    • Updated list of specific maintenance locations
    • Summary of facilities maintained by Plan Participants
    • Tables summarizing the Routine Operations and Maintenance Activities for each Plan Participant
appendix b natural community and species accounts
Appendix B - Natural Community and Species Accounts
  • Added Natural Community Accounts
    • Contain information on the background, distribution and associated Covered Species
    • The narrative conceptual models were incorporated into these accounts from the old version of Section 4.0.
  • The species accounts were reorganized based on their primary Natural Community association.