Seismic Retrofit of N 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 of N Building at Patton State Hospital
Document Type
NOE - Notice of Exemption
Document Description
The proposed project consists of a seismic retrofit of the N Building at Patton State Hospital. The N Building is categorized as a Risk Level VI on an I to VII scale, with VII being the highest risk level in the scale. This means that in a maximum credible earthquake, there would be extensive structural and non-structural damage, with collapse of some of the building components likely to occur. The seismic retrofit is necessary for the life and safety and security of the building occupants. The proposed seismic retrofit project would bring this building to Risk Level III. The proposed project includes construction of exterior concrete buttresses, strengthening end walls by eight-inch thick shotcrete at each wing, and installation of carbon fiber reinforced jackets for columns. The buttresses would by 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. The buttresses would be located on the exterior of both stories in four locations on each of the radiating wings of the N building.

Contact Information

Tamer Ahmed
Agency Name
Department of Mental Health
Contact Types
Lead/Public Agency


San Bernardino
San Bernardino

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
class 2; sec. 15302
Reasons for Exemption
The proposed project would bring the building from Risk Level VI to Risk Level III. No increase in capacity is proposed as part of or as a result of the proposed seismic retrofit for the N Building.

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.

Download CSV New Search Print