SR-57/0M9701 Geotechnical Investigation-Drilling Operations

1 Documents in Project


SCH Number
Public Agency
California Department of Transportation, District 12 (DOT)
Document Title
SR-57/0M9701 Geotechnical Investigation-Drilling Operations
Document Type
NOE - Notice of Exemption
Document Description
The purpose of this geotechnical investigation (drilling operation) is to sample soils in order to inform preliminary design and address permitting requirements for construction of the Northbound SR-57 Widening Project, between post miles 11.5/12.5 in the cities of Anaheim and Orange in Orange County, CA. Drilling operations are limited to State’s existing Right of Way (R/W) and within Orange County Flood Control District (OCFCD) property, in Santa Ana River (SAR) bottom -near and under- Caltrans bridge #55-0400. Thus, some boring locations occur within jurisdictional waters of the U.S. and waters of the State. Caltrans has a highway easement over the Santa Ana River/OCFCD property at this location. A section of the Santa Ana Regional Recreational Trail (Trail) is situated within OCFCD, along the SAR, in the study area. The Trail has been identified as a Section 4f resource. Analysis indicates there will be no temporary impacts to Trail or Trail users because the Trail will remain open and accessible during and throughout drilling operations. The investigation will utilize soil borings, as well as cone penetration borings. Borings will be a maximum of eight inches in diameter. Borings in river bottom (OCFCD property) will be approximately 110-120 feet deep. Borings in State’s existing R/W will be approximately 140 feet deep

Contact Information

Kathleen Dove
Agency Name
Job Title
Associate Env Planer
Contact Types
Lead/Public Agency / Project Applicant


Anaheim, Orange
Southern California
State Highways
State Route 57 (SR-57) 11.5/12.5
Santa Ana River
Other Location Info
Drilling operations occur in State's existing R/W and Santa Ana River (Orange County Flood Control District), in cities of Orange & Anaheim, Orange County, CA.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class C - 15301
Reasons for Exemption
Geotechnical drilling operations will collect soil samples to inform preliminary design of larger NB 57 widening project. Work activities are minor, short-term and no temporary impacts are anticipated. No permanent impacts are anticipated, at all.


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