HomeMy WebLinkAbout2001-01-09 - AGENDA REPORTS - STORMWATER MIT PLAN (2)CITY OF SANTA CLARITA
AGENDA REPORT
CONSENT CALENDAR
City Manager Approval:
Item to be presented b
DATE: January 9, 2001
SUBJECT: STANDARD URBAN STORMWATER MITIGATION PLAN (SUSMP)
IMPLEMENTING ORDINANCE
DEPARTMENT: Planning & Building Services
RECOMMENDED ACTION
City Council conduct second reading and adopt an ordinance entitled "An Ordinance of the
City Council of the City of Santa Clarita, California, Implementing the Standard Urban
Stormwater Mitigation Plan of the California Regional Water Quality Control Board for the
Los Angeles Region by Amending the Santa Clarita Municipal Code to Repeal Existing
Chapter 17.90 and to Add New Division 4: "Standard Urban Stormwater Mitigation Plan,
Chapter 17.90, "Standard Urban Stormwater Mitigation Plan Implementation."
BACKGROUND
March 8, 2000 the Executive Officer of the California Regional Water Quality Control
Board, Los Angeles Region approved and promulgated the Standard Urban Stormwater
Mitigation Plan (SUSMP). The SUSMP requires each City, which is a permittee under the
National Pollutant Discharge Elimination System (NPDES) permit io Los Angeles County
to adopt an ordinance implementing the SUSMP. The original deadline for implementation
was September 8, 2000. The City Council adopted Ordinance No. 00-06 on August 29, 2000
to comply with this deadline.
On October 12, 2000 the State Water Resources Control Board issued a decision to extend
the deadline to January 15, 2001. Along with this extension the State Board made
revisions to the SUSMP requirements. Attached to this agenda report is a copy of the
revised ordinance and the redlined version of the adopted ordinance to illustrate the
changes made upon review of the new SUSMP revisions by the City Attorney.
The SUSMP imposes many water quality related requirements on new development and
redevelopment projects. A SUSMP must be prepared and implemented for any new or
remodel/redevelopment project that falls into one of the following eight categories:
■ Single-family residence on a hillside
100,000 square foot Commercial Developments
Adopfed.J1-a_ "wbvf d Ja, It W -w �i0
■ Automotive repair shops
■ Retail gasoline outlets
■ Restaurants
■ Home subdivisions of ten or more dwelling units
• Parking lots 5,000 square feet or more or with 25 or more parking spaces and
potentially exposed to storm water runoff.
The SUSMP addresses the following items and all applicable projects must be designed,
constructed and maintained as identified in the Plan:
1. Peak Stormwater Runoff Discharge Rates: Peak rate of discharge of stormwater from
the site can not result in downstream erosion.
2. Conserve Natural Areas: Subdivisions must cluster development, limit clearing and
grading and preserve riparian and wetland areas.
3. Minimize Stormwater Pollutants of Concern: Site must be designed to minimize the
introduction of pollutants of concern to the stormwater conveyance system.
4. Protect Slopes and Channels: Decrease the potential of slopes and/or channels from
eroding and impacting stormwater runoff.
5. Provide Storm Drain System Stenciling and Signage: A notice that dumping in storm
drains and catch basins is illegal must be placed within the project area.
6. Properly Design Outdoor Material Storage Areas: Where outdoor storage of materials is
proposed, the area must be designed to eliminate runoff of pollutants.
7. Properly Design Trash Storage Areas: Trash storage areas must be isolated from contact
with stormwater and surrounded by a barrier to keep the trash within the storage area.
8. Provide Proof of Ongoing BMP Maintenance: The property owner must enter into a
binding agreement to properly maintain pollution control facilities and devices into
perpetuity. Agreements must travel with the land and therefore will be binding on any
new owner.
9. Design Standards for Best Management Practices: All water quality facilities must be
adequate to protect the project and adjacent areas from flooding and to treat 0.75 inches
of each rain event.
10. Properly Design Loadingl Unloading Dock Areas: These areas Xnust be designed to
eliminate contact with and discharging of stormwater.
11. Properly Design Vehicle /Equipment Wash Areas: These areas must be designed to
eliminate contact with and discharging of stormwater.
12. Properly Design Restaurant Equipment /Accessory Wash Areas: These areas must be
designed to eliminate contact with and discharging of stormwater.
13. Properly Design Fueling Areas: All fuel dispensing areas must be covered, paved with
concrete, and divert Stormwater away from dispensing area.
14. Parking Lots: Must be designed to limit impervious area and minimize the offsite
transport of pollutants.
The City is required to impose these requirements pursuant to State and Federal law. This
ordinance and new development procedures established at the staff level will bring the City
into compliance with these laws and regulations.
ALTERNATIVE ACTIONS
No alternatives have been identified because state and federal laws require the City to take
this action.
FISCAL IMPACT
The implementation of these regulatory requirements will increase the cost to the City and
property owners for plan review services, permitting and inspection. The costs incurred by
the City are eligible for reimbursement through developer fees. These and other
development related NPDES Permit compliance costs have been included in the recently
revised fee study which will be coming to City Council at a future meeting.
ATTACHMENTS
Revised Ordinance
Redline version of Ordinance No. 00-06
TLL:
SAPBS%ENVSRVCS\NPDES2\SUSMF%nemp agenda ibm2P.DOC