Elsie Gridley Mitigation Bank/Mission Solano Rescue Mission 1

Status Completed County Solano
Project Type Compensatory mitigation Location 38.29446° N, -121.80743° W Map
Project Area (Acres) 381.8 Last Updated 27 August 2020
Project Abstract No Data

Project Identification

02-48-C0375 SWRCB - 401 Certification Letter (e.g., Site Number or WDID)
WDID #5A48CR00036 SWRCB - CIWQS Place Number
2000-00614 USACE - DA File Number

Habitat Plan

ActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Acquisition/Preservation/Protection Unspecified Depressional Wetland Marsh and unvegetated flats 328.4 Construction in-progress
Acquisition/Preservation/Protection Unspecified Palustrine Wetland Marsh 13.60 Construction in-progress
Creation/Establishment Unspecified Riverine Wetland Channel 1.70 Construction in-progress
Creation/Establishment Unspecified Riverine Wetland Riparian area 9.10 Construction in-progress
Acquisition/Preservation/Protection Unspecified Vernal pools and swales None 29.00 Construction in-progress
Restoration/Rehabilitation Unspecified Vernal pools and swales None 59.40 Construction in-progress

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data


Elsie Gridley Mitigation Bank Construction completed 441.2


DateTypeDescriptionSite Name
2010-01-01 Monitoring end Estimated date
2009-03-17 Project entered Project entered into database
2009-03-09 Project submitted Project submitted
2007-09-21 Permit RWQCB permit issued
2006-07-01 Groundwork end Phase II construction/restoration completed
2006-01-24 Permit USACE permit issued
2005-11-01 Monitoring start Estimated date
2005-11-01 Groundwork end Phase I construction/restoration completed
2005-10-01 Groundwork start Estimated date
2004-12-01 Project start date Estimated date
2004-12-01 Permit RWQCB permit issued


Contact Steve Foreman LSA Associates, Inc. Not applicable/Unknown
Contact Ed Flynn Wetland Resources, LLC Not applicable/Unknown
Contact Jolanta Uchman San Francisco Bay Regional Water Quality Control Board San Francisco Bay
Contact Timothy Degraff Unknown/Unspecified Not applicable/Unknown
Contact Eric Raffini U.S. Environmental Protection Agency Region 9


No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
2020-05-29 6.2 335 - Gridley Mitigation Bank vernal pool system 67
2020-05-29 6.2 287 vernal pool system 80

Performance Criteria

StatusDetailsEvaluation Date
Original criteria See Corrected Wetland Tracker Form 2009-03-09
Name File Type Submitted On Submitted By
Elsie Gridley Mitigation Bank Other 2020-06-02 Shira Bezalel, San Francisco Estuary Institute
Wetland Tracker Form Other 2009-03-21 Shira Bezalel, San Francisco Estuary Institute

How to Use the Habitat Development Curve

Habitat Development Curves (HDCs) are used to determine the developmental status and trajectory of on-the-ground projects to create, restore, or enhance California wetland and stream habitats. Each HDC is based on assessments of habitat condition for different age areas of one habitat type that in aggregate represent the full spectrum of habitat development. The assessments of condition are provided by expert applications of the California Rapid Assessment Method (CRAM). Visit the CRAM website for more information about CRAM.

For each HDC, reference condition is represented by areas of a habitat that consistently get very high CRAM scores, have not been subject to disruptive management practices, and exist within landscapes that are protected and managed for their natural conditions. The horizontal lines intersecting the top of an HDC represent the mean CRAM score and standard deviation of scores for 25 qualifying reference areas.

The age of a project is estimated as the elapsed time in years between the groundwork end date for the project and the date of the CRAM assessment. To add or update a groundwork end date, use the Project Events form in Project Tracker (ptrack.ecoatlas.org). The minimum age in years of a non-project area, including any natural reference area, is estimated from all available local information, including historical maps and imagery, historical written accounts, and place-specific scientific studies of habitat development.

An HDC can be used to address the following questions:

  1. At what time in the future will the area of assessed habitat achieve the reference condition or other milestones in habitat development? The HDC can answer this question if the CRAM score for the assessed area is within the confidence interval of the HDC. The answer is the time in years along the HDC between the current age of the assessed area and the future date corresponding to the intersection of the HDC and the reference condition or other milestone.
  2. Is the area of assessed habitat likely to develop faster, slower, or at the same pace as most other areas of the same habitat type? The habitat area is likely to develop faster, slower, or at the same pace if the CRAM score for the area is above, below, or within the confidence interval of the HDC, respectively.
  3. What can be done to improve the condition of the habitat area or to increase its rate of development? HDCs by themselves cannot answer this question. Possible answers can be inferred by the following analysis that involves HDCs:
    1. Examine the HDC for each of the four CRAM Attributes;
    2. Identify the Attribute(s) scoring below the HDC;
    3. For any low-scoring Attribute, examine the component Metric Scores (note: the Metric Scores for any public CRAM assessment in the CRAM database can be obtained through EcoAtlas);
    4. Assume the low score of an Attribute is due to its low-scoring Metric(s);
    5. Consider modifying the design or management of the habitat area in ways that will sustainably increase its score(s) for the low-scoring Metric(s).

For more information about CRAM Attributes and Metrics, including their scientific rationale, see the CRAM Manual.

Display Habitat Development Curves For Wetland Type:

CRAM Site Scores