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  1. Download RUSLE2 Worksheet. The above RUSLE2 files are available upon request from the HQ Office of Hydraulics and Stormwater Design. Erosion Prediction Procedure. The Erosion Prediction Procedure (EPP) defines a method to predict erosion rates at construction sites.

  2. Caltrans has stand-alone guidance for assessing risk required by the Construction General Permit (CGP) (State Water Board Order 2009-0009-DWQ). Caltrans Project Engineers and Consultants should use this guidance to determine if a project has a Risk Level 1, 2 or 3.

  3. Rainfall Erosivity (R) Factor Calculator: The California Statewide Construction Stormwater General Permit requires construction stormwater dischargers to determine each construction site’s overall risk to water quality, which is separated into two elements – sediment risk and receiving water risk. The site

  4. The Risk Determination Worksheet (Appendix 1) serves as guidance for construction stormwater dischargers and may be used to manually calculate the site-specific risk of a construction project.

  5. The Risk Determination Worksheet in this Attachment serves as guidance for construction stormwater dischargers and may be used to manually calculate the site-specific risk of a construction project.

  6. 28 kwi 2022 · HARP Air Dispersion Modeling and Risk Tool | California Air Resources Board. Software that performs air dispersion runs and calculate health risk. Minimum System Requirements.

  7. We have developed Levee Flood Protection Zone (LFPZ) maps to increase awareness of flood risks associated with State-Federal levees. You can view the maps for your area by entering your property's address or parcel number into the parcel lookup tool.

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