Brightline West High Speed Rail Project

Status Planning County San Bernardino
Project Type Compensatory mitigation Location 34.89623° N, -116.99449° W Map
Project Area (Acres) 3.59 Last Updated 20 May 2021
Project Abstract The Project includes the construction and operation of a fully grade-separated, dedicated, passenger-only high-speed rail system powered by overhead catenary along I-15 between West Flamingo Road in Las Vegas, Nevada and south of Dale Evans Parkway Interchange in Apple Valley, California.

Project Identification

IDType
No Data

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
I-15 and Mojave River Final design Unknown/Unspecified Constructed Channel Bridge crossing 3.04 Construction planned Seasonal non-tidal
I-15 and Mojave River Overflow Final design Unknown/Unspecified Constructed Channel Bridge crossing 0.55 Construction planned Seasonal non-tidal

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data

Sites

NameStatusAcres
No Data

Events

DateTypeDescriptionSite Name
2024-12-31 Project end date Work anticipated to end in Quarter 4 of 2024
2024-12-31 Groundwork end Groundwork is anticipated to end in Quarter 4 of 2024, a specific date has yet to be determined. I-15 and Mojave River
2024-12-31 Groundwork end Groundwork is anticipated to end in Quarter 4 of 2024, a specific date has yet to be determined. I-15 and Mojave River Overflow
2021-09-01 Groundwork start Groundwork is anticipated to begin in Quarter 4 of 2021, a specific date has yet to be determined. I-15 and Mojave River Overflow
2021-09-01 Project start date Work anticipated to begin in Quarter 4 of 2021
2021-09-01 Groundwork start Groundwork is anticipated to begin in Quarter 4 of 2021, a specific date has yet to be determined. I-15 and Mojave River
2021-03-09 Permit Receipt of the approved Section 401 Water Quality Certification from the Lahontan RWQCB
2021-03-09 Report Receipt of the approved Section 401 Water Quality Certification from the Lahontan RWQCB I-15 and Mojave River Overflow
2021-03-09 Report Receipt of the approved Section 401 Water Quality Certification from the Lahontan RWQCB I-15 and Mojave River
2020-07-01 Report NEPA Reevaluation Document

People

TypeNameOrganizationDepartment
Consultant Aaron Grisel HNTB Corporation Environmental Planning

Funding

PhaseActivityFunderAmount
No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data
Name File Type Submitted On Submitted By
Project Map Package Other 2021-04-09 Tiffany Steinert, Lahontan Regional Water Quality Control Board
Section 401 Water Quality Certification Plan Or Permit 2021-04-09 Tiffany Steinert, Lahontan Regional Water Quality Control Board

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