Seismic Retrofit fo 30 Building at Patton State Hospital


SCH Number
Public Agency
California Department of Health Care Services, Mental Health Services Division (MHSD, DHCS)
Document Title
Seismic Retrofit fo 30 Building at Patton State Hospital
Document Type
NOE - Notice of Exemption

Document Description
The Department of Mental Health proposes a seismic retrofit of the 30 Building at Patton State Hospital. The 30 Building is considered seismic deficient and is classified at Risk Level VI on a scale of I to VII with Risk Level VII being the highest risk level. This means that in a maximum credible earthquake, there would be extensive structural and non-structural damage, with collaps of some of the building components likely to occur. The seismic retrofit is necessary for the life and safety and security of all the occupants, including patienst and staff. The proposed seismic retrofit project would bring the building to Risk Level III. The project includes exterior modifications to the building including construction of piles and buttresses. The buttresses would be 15 inch thick reinforced concrete walls supported by three-foot thick reinforced concrete slab/pile cap with twelve 18-inch diameter drilled and cast-in-place piles. Exterior modifications would also include strengthening the walls with shotcrete. Interior modifications would include installation of steel drag beams, and reinforcement of connections between slab and columns and slab to walls. The seismic retrofit project would allow all windows to remain open in the building. Approved temporary modular units may be used as swing space to temporarily house patients during the construction phase of the project. The modular(s) would be sited in the field west of the 70 Building and/or in the area north of the 30 Building. If the modular(s) are to be back-filled or re-used following project construction, any subsequent use would be subject to separate environmental review.

Contact Information
Jane Hershberger
Department of Mental Health
Lead/Public Agency
1600 9th Street, Rm 250
Sacramento, CA 95814

Phone : (916) 376-1604


San Bernardino
San Bernardino

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 2, Sec. 15302
Reasons for Exemption
This project is exempt under Section 15302 (a) that, in part, applies to reconstruciton of schools and hospitals to provide earthquake resistant structures that do not increase capacity by more than 50 percent.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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