NS-3092 - Zone Change for 1801 East Chestut Ave

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SANTA ANA REZONE PROJECT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION Construction Permit, dischargers are required to electronically file the Permit Registration Documents, which include a Notice of Intent (NOI), a Storm Water Pollution Prevention Plan (SWPPP), and other compliance-related documents required by the General Permit, and to mail the appropriate permit fee to the State Water Board. Long-term Operations The Municipal Storm Water Permitting Program regulates stormwater discharges from Municipal Separate Storm Sewer Systems (MS4). Most of these permits are issued to a group of co-permittees encompassing an entire metropolitan area. The MS4 permits require the discharger to develop and implement a Stormwater Management Plan/Program with the goal of reducing the discharge of pollutants to the maximum extent practicable (MEP).52 The management programs specify what Best Management Practices (BMPs)will be used to address certain program areas. The program areas include public education and outreach, illicit discharge detection and elimination, construction and post-construction, and good housekeeping for municipal operations. The Orange County Flood Control District, the County of Orange, and the City of Santa Ana, along with 51 other incorporated cities therein (Permittees), discharge pollutants from their MS45. Stormwater and non-stormwater flows enter and are conveyed through the MS4s and are discharged to surface water bodies of the Orange County Region. These discharges are regulated under countywide waste discharge requirements (contained in Order No. R8-2009-0030 [as amended by Order No. RB-2010-0062], Waste Discharge Requirements for the County of Orange, Orange County Flood Control District, and the incorporated cities within the Santa Ana Region Area-wide Urban Storm Water Runoff Orange County)which were approved on May 19, 2011. Order No. R8-2009- 0030, which serves as an NPDES permit, has expired but remains in effect until the Santa Ana RWQCB adopts a new permit. The Permit requires the development and implementation of a program addressing stormwater pollution issues in development planning for private projects. The primary objectives of the municipal stormwater program requirements are to (1) effectively prohibit non-stormwater discharges-, and (2) reduce the discharge of pollutants from stormwater conveyance systems to the MEP statutory standard. The County Model Water Quality Management Plan (WQMP) was developed as part of the municipal stormwater program to address stormwater pollution from new development and redevelopment by the private sector. This WQMP contains a list of the minimum required BMPs that must be employed for a designated project. The Permittees are required to adopt the Program's requirements in their own water quality regulations. Developers must incorporate appropriate WQMP requirements into their project plans. Each Permittee must approve the project plan as part of their development plan approval process and prior to issuing grading permits for projects covered by the model WQMP requirements. 57 MEP is the performance standard specified in Section 402(p)of the Clean Water Act. FCS 67 Https:f/adeclnnova[ions.sharap6in[.COm/iE[es/PehlleationsS[te/Shared D,cu ,ls/PuhHolcni/Client(PN-1N)/0327/0327o 7/ISMND/0327W475anta Ana Rai PraILR15Mnn , F0iAtld ce No. NS-3092 Page 79 of 118