Post-Construction Requirements (PCRs)
As part of UC Santa Cruz’s MS4 Permit, all “regulated projects”—defined as new development or redevelopment projects that create or replace more than 2,500 square feet of impervious surface over a project site—are required to meet the UC Santa Cruz Post-Construction Requirements (PCRs), which comply with the CCRWQB’s MS4 permit. This University’s current performance requirements are defined by Appendix C of University of California Santa Cruz Campus Standards Handbook: UC Santa Cruz Post-Construction Stormwater Management Requirements, Rev. March 30, 2017 (The Requirements or PCRs). The PCRs define water management zones (WMZ’s) based on underlying soil conditions and localized hydrologic conditions (see Exhibit 2.2 for WMZ delineation). The specific performance requirements for runoff reduction, water quality treatment, and peak flow management depend on the project size and within which WMZ the project is located. Any proposed infiltration facilities shall require geotechnical investigation and comply with recommendations from geotechnical analysis.
PCR Flow Chart
Integrated Water Master Plan
The Integrated Water Master Plan represents University of California, Santa Cruz’s (UCSC’s) first ever holistic approach to how the Campus manages the watershed, karst system, and development of a non-potable water network. The Master Plan was developed and completed through the lens of the 2021 Long-Range Development Plan (LRDP), current water infrastructure planning, campus projects currently under development, and UCSC’s goals and aspirations for water sustainability and resilience. Preserving the integrity of campus landscapes and integrated planning for long-term resilience and sustainability are top priorities for UCSC
How to use the IWMP for project planning and design
- Review assessment of watershed where project is located including storm drainage and karst/sinkhole conditions.
- Review evaluation of site-specific stormwater management strategies, opportunities and constraints.
- Review karst standards for projects within the vicinity of known sinkholes to reduce risk to structures and critical infrastructure
- Should rainwater and/or stormwater harvesting and reuse be prioritized as a strategy to meet stormwater management requirements and support water reuse goals?
- Review evaluation of the campus’s karst geology and sinkholes as a critical component of the stormwater management system
- Review health/stability of primary sinkholes of interest—i.e., those currently or are planned to accept runoff from development area.