Dry Creek Culvert Replacement
Summary
SCH Number
2024101014
Public Agency
California Department of Transportation, District 9
(DOT)
Document Title
Dry Creek Culvert Replacement
Document Type
NOE - Notice of Exemption
Received
Posted
10/23/2024
Document Description
This project aims to address significant flooding and infrastructure deterioration caused by recent summer monsoon storms affecting the culvert under State Route 203 at Dry Creek, as well as related drainage issues at the junction with Lake Mary Road. The flooding resulted from a blockage in the culvert, which has been compounded by debris accumulation and severe corrosion, necessitating urgent repairs before winter weather exacerbates the situation.
Scope of Work:
Dry Creek:
Remove and replace the existing culvert.
Install a debris grate at the inlet to prevent future blockages.
Provide rock slope protection at the outlet.
Excavate embankment material to facilitate the installation of the new culvert.
Patch the roadway and re-stripe as needed.
Consider the potential to abandon the existing culvert in place, subject to further design evaluation.
Lake Mary Road Junction:
Remove the existing slot drain and associated damaged concrete.
Abandon drainage features at this location, as they are no longer necessary due to adjacent development. Repair roadway smoothness by patching the area with concrete.
Contact Information
Name
Heather Elder
Agency Name
California Dept of Transportation
Job Title
Senior Environmental Scientist
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Email
Location
Cities
Mammoth Lakes
Counties
Mono
Regions
Northern California
State Highways
203
Other Location Info
State Route 203 Post Mile 1.4 and 4.75
Notice of Exemption
Exempt Status
Emergency Project
Type, Section or Code
(PRC 21080[b]; 14 CCR 15269(b) et seq.)
Reasons for Exemption
All proposed work and contractor staging/use areas are within the exiting
disturbed/maintained areas within Caltrans right-of-way. With the implementation of
avoidance and minimization measures, no known environmental resources will be
impacted
County Clerk
Mono
Attachments
Notice of Exemption
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