SLO Highway 1 - Culverts


SCH Number
Public Agency
California Department of Transportation, District 5 (DOT)
Document Title
SLO Highway 1 - Culverts
Document Type
NOE - Notice of Exemption
Document Description
The project proposes to replace the storm drain system and Santa Rosa St. and Foothill Blvd. in San Luis Obispo, CA. The storm drain has exceeded its anticipated service life. Continued corrosion to the corrugated steel pipe (CSP) will result in stormwater erosion to the surrounding backfill. The reinforced concrete-pipe (RCP) mainline has developed longitudinal cracks compromising the structural integrity on the pipe and must be replaced. A sewer line has broken through the RCP along Foothill Blvd and must be either avoided or relocated. Additionally, one manhole will be replaced, one manhole will be repaired, and, at the east edge of Caltrans’ R/W, one new manhole will be added. Although some nighttime construction is expected, avoidance and minimization measures mentioned below will be implemented.

Contact Information

Adam Joseph DiGiovine
Agency Name
California Department of Transportation, District 5
Job Title
Environmental Coordinator
Contact Types
Lead/Public Agency / Project Applicant


San Luis Obispo
San Luis Obispo
Southern California
Cross Streets
Foothill Blvd. and Santa Rosa St.
State Highways
Highway 1, Highway 101
Cal Poly, Pacheco Elementary, Bishops Elementary, Mission Prep
Brizzolara Creek, San Luis Obispo Creek

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1c. Section 15301. Existing Facilities.
Reasons for Exemption
The project will not result in a significant effect on the environment. The project will replace or repair the existing drainage system on SR-1 at PM 17.340 and will not expand use beyond that existing at the time of the lead agency's determination.


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