Kirby Hills Natural Gas Storage Facility - Phase II

Status Planning County Solano
Project Type Compensatory mitigation Location 38.16899° N, -121.91446° W Map
Project Area (Acres) 1.00 Last Updated 11 April 2024
Project Abstract Lodi Gas Storage, L.L.C. proposed expansion of storage capacity of existing Kirby Hills Natural Gas Storage Facility, including construction of 3 new well pad sites w/ up to 15 injection and withdrawal wells, installing a 2,700-foot-long pipeline connecting the new wells to existing gas compressor station, and expanding PG&E interconnection.
Administrative Region San Francisco Bay Regional Water Quality Control Board - Xavier Fernandez, SFBRWQCB

Project Identification

2-08(M) BCDC - Permit Number
A.05-07-018 SCH - State Clearinghouse Number
not recorded SWRCB - 401 Certification Letter (e.g., Site Number or WDID)
724580 SWRCB - CIWQS Place Number
5S48C341168 SWRCB - Waste Discharge Requirement
2007-400516N USACE - DA File Number
81420-2008-F-1771-2 USFWS - File Number

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Kirby Hills Natural Gas Storage Facility None Restoration (unspecified) Unspecified Estuarine Wetland Marsh 1.00 Construction planned

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
Kirby Hills Natural Gas Storage Facility - Phase II-impact Estuarine Wetland 0.40 Lost Permanent


Kirby Hills Natural Gas Storage Facility Construction planned 1.00


DateTypeDescriptionSite Name
2014-01-01 Monitoring end Estimated date
2009-08-01 Monitoring start Estimated date
2009-05-01 Project entered Project entered into database
2009-01-10 Project submitted Project submitted
2009-01-02 Permit USACE permit issued
2009-01-01 Groundwork start March-April
2009-01-01 Groundwork end Summer
2008-12-11 Permit USFWS permit issued
2008-09-10 Permit RWQCB permit issued
2008-07-22 Project start date Estimated date
2008-07-22 Permit BCDC permit issued


Contact Sue Bushnell ICF Jones and Stokes Not applicable/Unknown
Contact Scott Wilson Lodi Gas Storage, LLC Not applicable/Unknown


No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Criteria

StatusDetailsEvaluation Date
Original criteria See Wetland Habitat Mitigation and Monitoring Plan (May 2008), Chapter 2 2009-01-10
Name File Type Submitted On Submitted By
Preliminary Wetland Delineation Other 2009-05-27 Cristina Grosso, San Francisco Estuary Institute
Wetland Habitat Mitigation and Monitoring Plan Plan Or Permit 2009-05-27 Cristina Grosso, San Francisco Estuary Institute
Wetland Tracker Form Other 2009-05-27 Cristina Grosso, 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 ( 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