Caltrans - State Route 111 Sediment Control Project WDID No. 7A333173001

Summary

SCH Number
2017068409
Lead Agency
Regional Water Quality Control Board, Region 7 (Colorado River Basin), Palm Desert
Document Title
Caltrans - State Route 111 Sediment Control Project WDID No. 7A333173001
Document Type
NOE - Notice of Exemption
Received

Document Description
The Department of Transportation (Caltrans) has a project to conduct State Route 111 Sediment Control Project (Project). The Caltrans annually inspects roadside slopes to identify chronic erosion problems. The State Wide National Pollutant Discharge Elimination System (NPDES) permit (# 99-06-DWQ) requires Caltrans to maximize erosion control and soil stabilization on state facilities. The existing facility was designed and built without water quality treatment devices. Bare slopes within the project limits have erosive soils and lack sufficient vegetation. The objective of this project is to comply with the state wide NPDES and requirements to stabilize to the maximum extent possible, slopes having chronic erosion problems. Source controls will minimize the amount of sediment from Caltrans' facilities that discharges into the Salton Sea via storm water runoff. The proposed project proposes to fix the scours, fill the gullies, and protect the drainage facility with rock slope protection (RSP) and 1 -3 inches of gravel. The project will require minor excavation and grading to the outfall areas of culverts to install rip rap for the sediment traps. Sediment traps will slow down the upstream storm water flows, settle sediments, and reduce the downstream gully erosion. All work will remain within the state's right of way (ROW). Caltrans will import soil to minimize excavation, reduce the foot print, and reduce disturbed soil areas. The work period is approximately 80 working days.

Contact Information
Kai Dunn
Regional Water Quality Control Board, Region 7 (Colorado River B
73-720 Fred Waring Drive, Suite 100
Palm Desert, CA 92260

(760) 776-8986

Location

Coordinates
°53'23.064"N 33°28'40.872"W
Counties
Riverside
State Highways
SR - 111
Other Location Info
Near North Shore
Other Information
Lat: 115

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S: 15301(b)(c), Class 1
Reasons for Exemption
The proposed project is statutorily exempt from the California Environmental Quality Act in accordance with California Code of Regulations, Title 14, Section 15282 (K) because the project includes the repair of an existing pipeline.
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