Morrisville Unified Development Ordinance - February 2021.2

ARTICLE 7: STORMWATER MANAGEMENT ................................................................................ 7-1 Section 7.1. General Provisions.............................................................................................................7-1 7.1.1. Findings ..............................................................................................................................................................................7-1 7.1.2. Purpose ..............................................................................................................................................................................7-1 7.1.3. Authority ............................................................................................................................................................................7-2 7.1.4. Applicability and Jurisdiction........................................................................................................................................7-2 7.1.5. Map ....................................................................................................................................................................................7-3 7.1.6. Design Manual..................................................................................................................................................................7-3 Section 7.2. Administration and Procedures..........................................................................................7-4 7.2.1. Stormwater Administrator..............................................................................................................................................7-4 7.2.2. Review Procedures ..........................................................................................................................................................7-5 7.2.3. Applications for Approval .............................................................................................................................................7-6 7.2.4. Approvals..........................................................................................................................................................................7-8 7.2.5. Stormwater Variances ....................................................................................................................................................7-8 7.2.6. Appeals .............................................................................................................................................................................7-9 Section 7.3. Standards ...........................................................................................................................7-9 7.3.1. General Standards .........................................................................................................................................................7-9 7.3.2. Nitrogen and Phosphorus Loading............................................................................................................................ 7-10 7.3.3. Nitrogen and Phosphorus Standard Is Supplemental; Total Suspended Solids (TSS) Removal .................. 7-10 7.3.4. Control and Treatment of Runoff Volume ............................................................................................................... 7-10 7.3.5. Partial Offset of Nutrient Control Requirements ................................................................................................... 7-10 7.3.6. Evaluation of Standards for Stormwater Control Measures ............................................................................... 7-11 7.3.7. Dedication of BMPs, Facilities, and Improvements ................................................................................................ 7-11 Section 7.4. Maintenance ....................................................................................................................7-12 7.4.1. General Standards for Maintenance....................................................................................................................... 7-12 7.4.2. Operation and Maintenance Agreement ................................................................................................................ 7-12 7.4.3. Inspection Program.......................................................................................................................................................7-14 7.4.4. Performance Security for Installation and Performance ...................................................................................... 7-14 7.4.5. Notice to Owners..........................................................................................................................................................7-15 7.4.6. Records of Installation and Maintenance Activities ............................................................................................... 7-15 7.4.7. Nuisance .........................................................................................................................................................................7-15 7.4.8. Maintenance Easement................................................................................................................................................7-15 Section 7.5. Enforcement and Violations .............................................................................................7-16 7.5.1. General ..........................................................................................................................................................................7-16 7.5.2. Remedies and Penalties ..............................................................................................................................................7-16 7.5.3. Procedures......................................................................................................................................................................7-17 Section 7.6. Illicit Discharges and Connections ...................................................................................7-18 7.6.1. Illicit Discharges.............................................................................................................................................................7-18 7.6.2. Illicit Connections ...........................................................................................................................................................7-19 7.6.3. Spills ................................................................................................................................................................................7-20 7.6.4. Nuisance .........................................................................................................................................................................7-20 7.6.5. Enforcement....................................................................................................................................................................7-20