Draft Programmatic Environmental Impact Statement/Environmental Impact Report
San Francisco Estuary Invasive Spartina Project: Spartina Control Program
April 2003

Table S-2. Comparison of Impacts of Project Alternatives*

 

 

Impact

Alternative 1:
Regional Eradication Using All Available Control Methods
(current/ future)

Alternative 2:
Regional Eradication Using Non-Chemical Control Methods
(current/ future)

Alternative 3:
No Action -
Continued Uncoordinated Treatment
(current/ future)

Hydrology and Geomorphology

GEO-1:  Erosion or deposition of sediment at sites of cordgrass eradication

/ * / * / *

GEO-2:  Erosion or topographic change of marsh and mudflats by vehicles used in eradication

/ * / * / *

GEO-3:  Remobilization of sand in cordgrass-stabilized estuarine beaches

/ * / * / *

GEO-4:  Increased demand for sediment disposal and potential spread of invasive cordgrass via sediment disposal

/ * / * / *

GEO-5:  Increased volume and velocity of tidal currents in channels due to the removal of invasive cordgrass

+/ *

+/ *

+/ *

GEO-6:  Increased depth and turbulence of tidewaters in salt marsh pans

+/ *

+/ *

* /

Water Quality

WQ-1: Degradation of water quality due to herbicide application

/

* / *

/

WQ-2: Degradation of water quality due to herbicide spills

/ *

* / *

/ *

WQ-3: Degradation of water quality due to fuel or petroleum spills

/ * / * / *

WQ-4: Degradation of water quality due to contaminant remobilization

/ * / * / *
Biological Resources

BIO-1.1:  Effects of alternative on salt-meadow cordgrass and English cordgrass infested tidal marsh plant communities

/ * / *

* /

BIO-1.2:  Effects of alternative on Atlantic smooth cordgrass (and its hybrids) infested tidal marsh plant communities

/ * / *

/ *

BIO-1.3:  Effects of alternative on Chilean cordgrass infested tidal marsh plant communities

/ * / *

/ *

BIO-1.4:  Effects of alternative on submerged aquatic plant communities

/ * / *

/ *

BIO-2:  Effects of alternative on special status plants

/ * / *

/

BIO-3:  Effects of alternative on non special status shorebirds and waterfowl

/ * / *

/

BIO-4.1:  Effects of alternative on salt marsh harvest mouse and tidal shrew

/

/

/

BIO-4.2:  Effects of alternative on resident harbor seal colonies in San Francisco Bay

/

/

/

BIO-4.3:  Effects of alternative on the southern sea otter

* / *

* / *

/

BIO-5.1:  Effects of alternative on California clapper rail

/ *

/ *

/

BIO-5.2: Effects of alternative on California black rail

/ *

/ *

/

BIO-5.3:  Effects of alternative on tidal marsh song sparrow subspecies and salt marsh common yellowthroat

/ * / *

/

BIO-5.4:  Effects of alternative on California least terns and western snowy plovers

/ * / *

/

BIO-5.5:  Effects of alternative on raptors

/ * / *

/

BIO-6.1:  Effects of alternative on anadromous salmonids

/ * / *

/

BIO-6.2:  Effects of alternative on delta smelt and Sacramento splittail

/

/

/

BIO-6.3:  Effects of alternative on tidewater goby

* / *

* / *

* / *

BIO-6.4: Effects of alternative on estuarine fish populations of shallow submerged intertidal mudflats and channels

/

/

/

BIO-7:  Effects of alternative on California red-legged frog and San Francisco garter snake

* / *

* / *

* / *

BIO-8:  Effects of alternative on mosquito production

/

/

/

BIO-9:  Effects of alternative on tiger beetle species

+/

+/

+/

Air Quality

AQ-1:  Dust emissions

/

/

/

AQ-2:  Smoke emissions

/ * / * / *

AQ-3:  Herbicide effects on air quality

/ * * / * / *

AQ-4:  Ozone precursor emissions

/

/

/

AQ-5:  Carbon monoxide emissions

/

/

/

Noise

N-1:  Disturbance of sensitive receptors

/ * / * / *
Human Health and Safety

HS-1:  Worker injury from accidents associated with manual and mechanical aspects of treatment

/ * / * / *

HS-2:  Worker health effects from herbicide application

/

* / *

/

HS-3:  Health effects to the public from herbicide application

/

* / *

/

HS-4:  Health effects to the public from accidents associated with chemical treatment

/

* / *

/

Visual Resources

VIS-1:  Alteration of views from removal of non-native cordgrass

/

/

/

VIS-2Change in views from native marsh, mudflat, and open water to non-native cordgrass meadows and monocultures

* / *

* / *

/

Land Use

LU-1:  Land use conflicts between herbicide use and sensitive receptors

/

* / *

/

LU-2:  Land use conflicts from mechanical and burning treatment methods

/ * / * / *
Cultural Resources

CUL-1:  Disturbance and destruction of cultural resources from access and treatment

/ * / * / *

CUL-2:  Loss of cultural resources from erosion

/ * / * / *
Socioeconomics
/
/
/
Environmental Justice

* / *

* / *

* / *

Cumulative Impacts
 
CUM-1:  Effects of wetland restoration projects on spread of non-native cordgrass.
/
/
/
CUM-2:  Cumulative damage to marsh plain vegetation.
/ * / * / *