Green Gulch Landslide Repair Project

Status Unknown County Marin
Project Type Non-mitigation Location 37.86855° N, -122.56297° W Map
Project Area (Acres) < 0.1 Last Updated 11 March 2019
Project Abstract No Data

Project Identification

IDType
796728 SWRCB - CIWQS Place Number

Habitat Plan

ActivityHabitatSubHabitatAcresActivity StatusWater Regime
Enhancement Riverine Wetland Riparian area < 0.1 Unknown/Unspecified Riparian
Unknown/Unspecified Riverine Wetland Riparian area < 0.1 Unknown/Unspecified Riparian

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data

Sites

NameStatusAcres
Green Gulch Zen Center Unknown/Unspecified < 0.1

Events

DateTypeDescriptionSite Name
2020-06-01 Monitoring end Green Gulch Zen Center
2020-06-01 Monitoring end
2015-02-01 Monitoring start Green Gulch Zen Center
2015-02-01 Monitoring start
2013-10-15 Groundwork end
2013-10-15 Groundwork end Green Gulch Zen Center
2013-09-03 Groundwork start Green Gulch Zen Center
2013-09-03 Groundwork start

People

TypeNameOrganizationDepartment
Contact Sara Tashiker Unknown/Unspecified Not applicable/Unknown

Funding

ActivityFunderAmount
No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Criteria

StatusDetailsEvaluation Date
Unknown/Unspecified To verify that the Project enhances geomorphic and hydrologic functioning as desired, theApplicant shall have a qualified fluvial geomorphologist perform geomorphic and hydrologic monitoring for a minimum of five years as described in the Application received on June 26, 2013. In addition, photographs shall be taken of (1) the cascade structure looking down from the road surface above the cascade structure, (2) the cascade structure looking up from 10 to 15 feet downstream of the structure, (3) each of the pools within the cascade structure, (4) the channel between the cascade structure and the rockvane, (5) the rock vane, and (6) any signs of erosion, sedimentation, or blockages within the creek. The performance criteria for geomorphic and hydrologic function shall be the following: a. No observed signs of erosion that threatens the integrity of the culverts, rock cascade structure, and/or rock vane (i.e., scarps, scour, or piping that threaten to flank or undermine the culverts, cascade structure or rock vane); b. No observed signs of sediment aggradation that threatens the pools or rock vane (i.e., filling of a pool or pools that threatens to reduce their depth to that of the surrounding rock structure, or accumulation of sediment behind the rock vane that threatens to reroute water around the structure); c. No change in channel dimensions equal to or greater than 10 percent of the channel dimensions indicated in the as-built surveys or previous monitoring surveys; and d. No conditions that block the channel and threaten channel and floodplain structure or hydraulic function. If these performance criteria are not achieved, an evaluation of the cause shall be conducted and appropriate adaptive management measures identified and implemented in consultation with the appropriate agencies, including but not limited to, the Water Board. Furthermore, the evaluation of the cause of the failure shall include, but not be limited to, the results from the current and previously performed geomorphic assessments, storm event data, and a survey of the stream-bed profile conducted using, at a minimum, a stadia rod. Lastly, the monitoring period shall be extended until the geomorphic and hydrologic performance criteria have been achieved. 7. To verify that the Project successfully establishes vegetation, the Applicant shall have a qualified biologist monitor vegetation cover on an annual basis for a minimum of five years. The performance criteria for vegetation establishment shall include the following: a. Year 1: 5 percent or greater absolute cover of native species; b. Year 2: 10 percent or greater absolute cover of native species; c. Year 3: 25 percent or greater absolute cover of native species; d. Year 4: 40 percent or greater absolute cover of native species; e. Year 5: 60 percent or greater absolute cover of native species; and f. All Years: 75 percent survival of planted vegetation. If these performance criteria are not achieved, additional plants must be installed and monitored for an additional five years from the date of replanting. Replacement plantings are subject to the same performance criteria as the initial plantings. In addition, if supplemental watering (i.e., irrigation) is necessary beyond the first 2 years to ensure establishment of vegetation, the monitoring period shall be extended for a minimum of three years after cessation of supplemental watering. 8. Monitoring reports shall be submitted to the Water Board by June 1st of each year. Monitoring reports shall be submitted either by uploading them to the EcoAtlas website at http://ecoatlas.org/regions/ecoregion/bay-delta/projects or via mail (see the address on the letterhead), and shall summarize each year’s monitoring results, including the need for any remedial actions. The annual reports shall also compare data to previous years and describe progress towards meeting final success criteria. The Year 5 monitoring report shall be a comprehensive final report that includes summaries of the monitoring data, representative photos, and maps. The final report shall also document if the site meets the final performance criteria listed in Condition Nos. 6 and 7 above. If any criterion is not met in any year, the report shall include the remedial measures that will be implemented and specify extension of the monitoring period in accordance with either or both Condition Nos. 6 and 7 above. 2013-09-03
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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