Environmental Impact Statement - Sonoma Land Trust

Table ES-1. Continued Page 3 of 1412
Impact Significance Determination Mitigation Measure
Impact HYD-8: Impact of Sea Level Rise on Marsh
Formation and on Levee Protection
Less than Significant
Mitigation Measure HYD-MM-3: Monitor
Sea Level Rise and Raise the Flood
Protection Levee as Needed to Protect the
SMART Line and the Agricultural Land East
of the SMART Line
Mitigation Measure HYD-MM-4: Monitor
Marsh Formation and Consider Adaptive
Management Actions to Maintain Tidal
Marsh and/or Allow Inland Migration of the
Tidal Marsh in Light of Ongoing Sea Level
Rise.None Required.
Significance Determination
with Mitigation Incorporation
N/A
Less than Significant
Water Quality
No-Action Alternative
No Impact
Proposed Project/Full-Tidal Alternative
Impact WQ-1: Degradation of Surface Water and
Sediment Quality due to release of Pollutants during
construction.
Impact WQ-2: Degradation of Surface Water and
Sediment Quality due to Increase Methyl Mercury
formation
Significant
Significant
Mitigation Measure WQ-MM-1: Prepare
and Implement Revised Corrective Action
Plan for Sports Club Shooting Range Site.
Mitigation Measure WQ-MM-21:
Implement Water Quality Control Measures
for Project Construction.
Significant Mitigation Measure WQ-MM-3: 2:
Development and Implement a Methyl
Mercury Adaptive Management Plan
Impact WQ-3: Degradation of Groundwater Quality Less than Significant None Required N/A
Impact WQ-4: Changes in Dissolved Oxygen
Concentration in Receiving Waters
Impact WQ-5: Potential Turbidity Impacts due to
Dredging and Placement of Dredged Material
Impact WQ-6: Degradation of Water Quality due to
Inundation of Formerly Drained Wetlands
Less than Significant None Required N/A
Significant
Mitigation Measure WQ-MM-43:
Implement Water Quality Control Measures
for Project Dredging
Less than Significant None Required N/A
Less than Significant
Less than Significant
Less than Significant
Less than Significant