Tehachapi Sanitary Landfill Drainage Improvements Project

Status Proposed County Kern
Project Type Unknown/Unspecified Location Not Mapped
Project Area (Acres) < 0.1 Last Updated 13 April 2022
Project Abstract Project includes activities related to the modification of an ephemeral stream on the east side of the Tehachapi Sanitary Landfill approximately three miles east of the City of Tehachapi in order to redirect storm flows and protect the landfill from storm damage. A segment of stream will be widened.
Administrative Region Lahontan Regional Water Quality Control Board - Tiffany Steinert, Jan Zimmerman, Elizabeth van Diepen, LRWQCB

Project Identification

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Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Tehachapi SLF Drainage Improvement Project None Unknown/Unspecified Unknown/unspecified habitat None < 0.1 Proposed Seasonal non-tidal

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
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DateTypeDescriptionSite Name
2018-09-20 Completion Project has been completed per the specs by the contractor. Final inspections were made by Public Work's resident engineer and permitting staff. The Notice of Completion was filed with the Assessor's office on October 1, 2018.
2018-07-09 Groundwork start Clearing and grubbing of land starts. As required by the site's CUP, a cultural monitor from Stantec is on-site. A biological orientation was given to all crew members by Public Work's staff. Review of the WDRs was also part of the kick-off. Permitting staff (Ronelle Candia) remained on-site during initial ground disturbance to ensure contractor compliance will all permits.
2018-07-02 Groundwork start Date construction is supposed to start. This project may be delayed due to the 4th of July holiday (could start the following week)
2018-06-19 Other Project awarded to low-bid contractor
2018-06-04 Update Notice of proposed ground disturbance and results of biological surveys sent to USFWS, CDFW, and RWQCB
2018-05-09 Other Project goes out for contractors to bid on (Contract #18137)
2018-05-05 Habitat survey Report from William Vanherweg stating trapping for Tehachapi pocket mouse had turned up negative.
2018-03-27 Report Pre-disturbance vegetation survey was completed in order to determine the 5-year, 70% success criteria.
2018-03-27 Habitat survey Pre-Activity Biota Survey completed by Public Works biological staff.
2017-05-01 Habitat survey Pocket Mouse Survey to be completed Tehachapi SLF Drainage Improvement Project
2016-10-21 Other Lahontan RWQCB issues Notice of Applicability for General Waste Discharge Requirements for Small Construction, Including Utility, Public Works, and Minor Streambed/Lakebed Alteration Projects, Board Order No. R6T-2003-0004, Tehachapi Sanitary Landfill Drainage Improvement Project, Kern County (WDID No. 6B151506003) Tehachapi SLF Drainage Improvement Project
2016-04-22 Other Approval for Project as described in the Notification without an Agreement Tehachapi SLF Drainage Improvement Project
2014-11-13 Other Supplemental EIR (SCH #2006021089) approved by Kern County Board of Supervisors Tehachapi SLF Drainage Improvement Project
2014-05-20 Other The USACE has determined that the Project site does not contain waters of the United States. Tehachapi SLF Drainage Improvement Project


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Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
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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