32_NCDEQ Stormwater Design Manual

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NORTH CAROLINA
Environmental Quality
Stormwater Design Manual
The Stormwater Design Manual is compatible with the Minimum Design Criteria (MDC) that are codified in the stormwater rules
(/about/divisions/energy-mineral-land-resources/energy-mineral-land-rules/stormwater-program-rules), which went into effect on Jan. 1,
2017. The Stormwater Program will periodically update the Manual to provide better guidance on meeting the stormwater rules. Chapters
C-1 through C-12 were updated on November 20, 2020.
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Forms
Supplement EZ form (https://fiLes.nc.gov/ncde Energy Mineral and Land Resources/Stormwater/State SW Supplemental Forms/SuppEZ-
2020-Version-2.1.3.xlsm) (121312020)
0&M EZ form ( energy -mineral -and - Land- resources/stormwater/state-sw-supplemental-forms/o-m-ez-20201215-2-1-3/downLoad) (1211512020)
SCM Crediting
Stormwater Control Measure Credit Document ( energy-mineral-and-Land-resources/stormwater/bmp-manual/scm-credit-doc-2018-11-
7/download) (11/7/2018} This document lists aLL SCM credits together facilitate comparisons between different SCMs for the regulated
community. It is a joint effort between DEQ's Stormwater and Nonpoint Source Planning programs.
Stormwater Design Manual Table of Contents
Part A: Common Site and SCM Elements
A-0. Areas of Research Needed ( energy-mineral-and-land-resources/stormwater/bmp- man ual/0-areas- research- needed-
20190815/download) (811512019)
A-1. Runoff Treatment & VoLume Match ( energy-mineral-and-Land-resources/stormwater/bmp- man ual/1-runoff -treatment-and-voLume-
match/download) (41312017)
A-2. Soils ( energy-mineral-and-land-resources/stormwater/bmp- man ual/2-soils/download) (41312017)
A-3. Vegetation ( energy-mineral-and-Land-resources/stormwater/bmp- man ual/3-vegetation/downLoad) (41312017)
A-4. Built -Upon Area ( energy-mineral-and-land-resources/stormwater/bmp-manual/4-built-upon-area/download)(2/11/2018)
A-5. Common Structures and Materials ( energy -mineral -and - Land- resources/stormwater/bmp-manual/5-common-structures-and-
materiaLs/download) (211112018)
A-6. Construction ( energy-mineral-and-land-resources/stormwater/bmp-manual/6-construction/download) (211112018)
A-7. Operation and Maintenance ( energy-mineral-and-Land-resources/stormwater/bmp- man ual/7-operation-and-maintenance/downLoad)
(211112018)
A-8. Guidance on SCM Selection ( energy -mineral -and - Land- resources/stormwater/bmp-manual/8-guidance-scm-selection/download)
(712412018)

A-9. Vegetated Setbacks ( energy-mineral-and-land-resources/stormwater/bmp-manual/9-vegetated-setbacks-7-30-2019-2/download)
(713012019)
Part B: Calculations Guidance ( energy -mineral- and- Land -resources/stormwater/bmp-manual/b-stormwater-
calculations/download) (311512017)
Part C: Minimum Design Criteria and Recommendations for Stormwater Control Measures
C-0. MDC for all SCMs ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-0-mdc-all-scros/downLoad) (11312017)
C-1. Infiltration System ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-l-infiltration-system-11-20-2020/download)
(1112012020)
C-2. Bioretention Cell ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-2-bioretention-11-20-020/download) (1112012020)
C-3. Wet Pond ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-3-wet-pond-11-20-2020/downLoad) (1112012020)
C-4. Stormwater Wetland ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-4-stormwater-wetland-11-20-2020/downLoad)
(1112012020)
C-5. Permeable Pavement ( energy -mineral -and- Land- resources/stormwater/bmp-manual/c-5-permeable-pavement-11-20-2020/download)
(1112012020)
C-6. Sand Filter ( energy-mineral-and-land-resources/stormwater/bmp- man ual/c-6-sand-filter-11-20-2020/downLoad) (1112012020)
C 7. Rainwater Harvesting (energy mineral and land resources/stormwater/bmp man ual/c 7 rainwater harvesting 11 20-2020/download)
(1112012020)
C-8. Green Roof ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-8-green- roof- 11-20-2020/download) (1112012020)
C-9. Level Spreader -Filter Strip ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-9-level-spreader-filter-strips-11-20-
2020/download) (1112012020)
C-10. Disconnected Impervious Surface ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-10-disconnected-impervious-
surface-11-20-2020/download) (1112012020)
C-11. Treatment Swale ( energy-mineral-and-land-resources/stormwater/bmp- man ual/c-11-treatment-swale-11-20-2020/download) ( energy_
mineral-and-land-resources/stormwater/bmp-manual/c-11-treatment-swale/download) (1112012020)
C-12. Dry Pond ( energy-mineral-and-land-resources/stormwater/bmp-manual/c-12-dry_pond-11-20-2020/download) (1112012020)
Part D: Minimum Design Criteria and Recommendations for New Stormwater Technologies
D-1. StormFilter ( energy-mineral-and-land-resources/stormwater/bmp-manual/d-l-stormfilter/download) (11312017)
D-2. Silva Cell Suspended Pavement with Bioretention ( energy -mineral -and- Land- resources/stormwater/bmp-manual/d-2-silva-cell-
suspended-pavement-bioretention/download) (81712017)
D-3. Filterra ( energy-mineral-and-land-resources/stormwater/bmp-manual/d-3-filterra-1-31-2018-final/download) (211112018)
D-4. BayFRter ( energy-mineral-and-land-resources/stormwater/bmp-manual/d-4-bayfilter-manual-section-1-16-18-final/download)
(21912018)
Part E: Guidance for Specific Types of Sites
E 1. Low Density_( energy-mineral-and-land-resources/stormwater/bmp-manual/e-l-low-density-final/download) (211112018)

E-2. Single Family Homes with BUA Limits ( energy-mineral-and-land-resources/stormwater/bmp-manual/e-2-single-family-homes-bua-
limits/download) (41612017)
E-3. Retrofits ( energy-mineral-and-land-resources/stormwater/bmp-manual/e-3-retrofits/download) (11312017)
E-4. Airports ( energy-mineral-and-land-resources/stormwater/bmp-manual/e-4-airports-01-29-2018/download) (112912018)
E-5. Linear Transportation and Greenways_( energy-mineral-and-land-resources/stormwater/bmp-manual/e-5-linear-transportation-and-
greenways/download) (11312017)
E-6. Solar Farms ( energy-mineral-and-land-resources/stormwater/bmp- man ual/2018-e-6-solar-farm-manual/download) (12113118)
Part F: Guidance for New Stormwater Technologies ( energy-mineral-and-land-resources/stormwater/bmp-manual/f-new-stormwater-
technologies-04-17-17/download) (411712017)
Archive
MDC Team: Documents all of the discussions from the stakeholders group that developed the new Minimum Design Criteria
(/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/stormwater-mdc-team).
Stormwater Program
Contacts (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-program/stormwater-program-contacts)
Maps & Permit Data (/about/divisions/energy-mineral-and- Land- resources/stormwater/stormwater-program maps -permit -data)
Flooding Guidance (/about/divisions/energy-mineral-land-resources/energy-mineral-land-rules/stormwater-program/flooding-guidance)
Stormwater Design Manual (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-
program/stormwater-design)
SCM Operation & Maintenance (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-program/stormwater-
design-manual/scm-operation-maintenance)
Archived Design Manuals (/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/stormwater-bmp-
manual/archive)
Archived Supplemental Forms (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-program/stormwater-
design-manual/archived-stormwater-design-manual-supplemental-forms)
MDC Team Archives (/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/stormwater-mdc-team)
Rules & Regulations (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-program/stormwater-rules-and-
regulations)
Post -Construction Program (/about/divisions/energy-mineral-and- Lan d-resources/stormwater/stormwater-program post -construction -
program)
NPDES Construction Program (/about/divisions/energy-mineral-and- land- resources/stormwater/stormwater-program npdes-
construction-program)

NPDES Industrial Program (/about/divisions/energy-mineral-and- Land- resources/stormwater/stormwater-program npdes-industrial-
prQgram)
NPDES MS4 Program (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-program npdes-ms4 program-2)
Stormwater Public Notices labout/d ivisionslene gy- m i neraL-and-land- resou rces/stormwaterlstormwater= p[Qg ram Istormwater= pub Li c-
notice )
Training & Outreach (/about/divisions/energy-mineral-and-land- resources /stormwater/stormwater-program /training -and -outreach)
Stormwater ePaym n (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-p-rQgram/stormwater-ep-aym n )
Water Supply Watershed Program (/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater-program/water-
supply-watershed program)
https://deq.nc.gov/about/divisions/energy-m ineraL-and-land-resources/stormwater/stormwater-program/stormwater-design