20 Allen Street New Modular Trailer


SCH Number
Public Agency
Contra Costa County
Document Title
20 Allen Street New Modular Trailer
Document Type
NOE - Notice of Exemption
Document Description
The purpose of this project is to install a permanent 400-square foot modular trailer at 20 Allen Street that will provide additional office space and approximately 2-4 freezers for storing lab samples. The Public Health Lab at the County Hospital is currently overcrowded and does not have enough office and lab equipment space. The new modular trailer will be installed in an existing parking lot; three parking spaces will be removed. The construction process for this project will include removing and replacing approximately 500-700 square feet of asphalt for regrading and compaction, partial removal of an existing concrete retaining wall, providing electrical service to the trailer, installing an emergency backup generator for the trailer, and installing the new modular trailer. Ground disturbance and excavations up to approximately 3 feet are anticipated to make the grades uniform and comply with the Americans with Disabilities Act. Removal of approximately 2 landscape trees is anticipated. If tree removal occurs during nesting bird season, a nesting bird survey will be conducted. Drainage modifications, utility relocation and adjustments, and temporary traffic control may be needed. Appropriate best management practices for stormwater control (i.e. storm drain inlet protection) will be in place. Construction will take approximately 8 weeks to complete.

Contact Information

Shravan Sundaram
Agency Name
Contra Costa County Public Works Department
Job Title
Environmental Analyst I
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project


Contra Costa
Northern California, San Francisco Bay Area
Cross Streets
Allen Street
Parcel #
State Highways
State Route 4

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Section 15303 (c) and Section 15303 (e)
Reasons for Exemption
The project consists of the construction of a new, small accessory structure that will provide less than 2,500 square feet of office space, pursuant to Article 19, Sections 15303(c) and 15303(e) of the CEQA guidelines.
County Clerk
Contra Costa


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