Henry Mayo Newhall Hospital Master Plan Second Amendment Project

14 Documents in Project


SCH Number
Lead Agency
City of Santa Clarita
Document Title
Henry Mayo Newhall Hospital Master Plan Second Amendment Project
Document Type
SIR - Supplemental EIR
Present Land Use
Existing Hospital/Specific Plan

Document Description
The Project involves an amendment to the approved 2016 Specific Plan for the Henry Mayo Newhall Hospital (HMNH) and a second amendment to the 2008 Master Plan and Development Agreement for the HMNH. The revisions would allow for the development of up to 200,000 square feet of building area for a new Diagnostic and Treatment Building, a new Inpatient Building, and up to 292 new parking spaces to be added to an existing parking facility (PS-4) through the addition of three aboveground levels to the existing structure. With the proposed amendments, the total buildout capacity of hospital and medical office space within the Master Plan and Specific Plan area would increase from 698,000 square feet to 898,000 square feet.

Contact Information
David Peterson
City of Santa Clarita
Lead/Public Agency
23920 Valencia Boulevard Suite 302
Santa Clarita, CA 91355

Phone : (661) 284-1406

Henry Mayo Newhall Hospital
Project Applicant


34°23'52"N 118°33'12"W
Santa Clarita
Los Angeles
Southern California
Cross Streets
McBean Parkway and Orchard Village Road
Total Acres
Parcel #
2861-073-010, 2861-073-011, 2861-073-012
State Highways
Meadows Elementary School, Hart High School
Santa Clara River

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Medical Facilities)
Local Action
Project Issues
Aesthetics Air Quality Cumulative Effects Hydrology/Water Quality Noise Sewer Capacity Transportation
Reviewing Agencies
California Air Resources Board (ARB) California Department of Conservation (DOC) California Department of Fish and Wildlife, South Coast Region 5 (CDFW) California Department of Parks and Recreation California Department of Transportation, District 7 (DOT) California Department of Water Resources (DWR) California Governor's Office of Emergency Services (OES) California Highway Patrol (CHP) California Native American Heritage Commission (NAHC) California Natural Resources Agency California Office of Statewide Health Planning and Development (OSHPD) California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB) California State Lands Commission (SLC) State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Water Quality


Environmental Document
Appendix A_NOP and NOP responses   PDF 2906 K Appendix B_AQ-GHG Analysis Technical Report   PDF 11692 K Appendix C_Health Risk Assessment Report   PDF 7953 K Appendix D_Noise Assessment Technical Report   PDF 3462 K Appendix E_TIS_11-20   PDF 4028 K Appendix F_VMT Analysis   PDF 321 K Appendix G_AB52 Close of Consultation Letter   PDF 114 K Henry Mayo Newhall Hospital SEIR_combined   PDF 10291 K Signed NOA   PDF 1162 K Summary_Form_for_Document_Submittal   PDF 581 K
HMNH NOC for SCH   PDF 527 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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