Stormwater Management 101
Updated: Oct 9
Why Choose JRH Engineering
Why Developers, Contractors & Property Owners Choose JRH
Most engineering firms talk about technical capability. We focus on what actually matters to your project: speed, cost, communication, and results.
Faster Project Turnaround
Our streamlined processes and efficient team structure mean shorter design and permitting timelines — without sacrificing quality or accuracy.
Clear & Responsive Communication
You work directly with engineers who keep you informed. No long delays or unanswered emails — just straightforward updates and quick responses.
Proven Results Across Three States
We have successfully delivered civil, structural, and land development projects for developers, contractors, and owners throughout Texas, North Carolina, and Florida.
Check out JRH’s case studies.
Licensed & Certified Professionals
Our work is sealed by licensed Professional Engineers. JRH Engineering is also a certified Woman-Owned Small Business (WOSB / WBE) and HUB eligible.
New Developments in NC with SWPPP Requirements
Every new development in North Carolina has to manage stormwater twice: during construction, when bare soil can wash off the site, and after construction, when roofs and pavement send more runoff downstream.
JRH Engineering is a Civil Engineer, Structural Engineer and Land Development firm serving Texas, North Carolina and Florida, with an office in Charlotte.
JRH guiding principles are: Engineering Excellence. Delivered on Time. Built on Value.
Step 1: Erosion and Sediment Control Plan
Land disturbance of more than 1 acre needs an approved erosion and sedimentation control plan under G.S. 113A-57
The plan is filed at least 30 days before work begins
Step 2: Construction Stormwater Permit (NCG01)
NCDEQ’s construction stormwater general permit, NCG010000, took effect April 1, 2024. Per NCDEQ:
It covers construction that disturbs one acre or more, or less as part of a larger common plan
Coverage is requested by electronic Notice of Intent through the AccessDEQ portal after the erosion control plan is approved
The financially responsible party on the approved plan must submit; a consultant cannot sign
Projects outside the state sediment program may fall under NCG250000 instead
Self-inspections and records follow Part III of the permit
Step 3: Post-Construction Stormwater
In subject areas of the state, new development must install and maintain permanent stormwater control measures
Design follows NCDEQ’s Stormwater Design Manual under 15A NCAC 02H .1000
MS4 communities add their own post-construction ordinances
Common Stormwater Control Measures
Wet detention pond: permanent pool for settling, with outlet and spillway
Dry detention pond: peak flow control with limited treatment
Bioretention: planted media that filters runoff
Permeable pavement: infiltration where soils and groundwater allow
Long-Term Maintenance
Owners are responsible for operating and maintaining permanent control measures.
Plan maintenance access and inspection records from the start.
Project: Flood Zone Duplex, Charlotte, NC
New duplex on a FEMA flood zone lot in Charlotte, Mecklenburg County
An existing flood permit required the driveway and building pad about four feet above existing grade
Challenges
Charlotte’s stormwater ordinance, FEMA rules and the flood permit all applied
Four feet of fill had to drain without affecting neighbors
Objectives
Meet the flood permit’s elevation conditions.
Satisfy Charlotte and Mecklenburg County drainage criteria.
Solutions JRH Engineering Provided
Civil engineering grading design with four-foot fill
A drainage plan directing stormwater to compliant outfall conditions
Results:
Flood permit elevation conditions satisfied
Stormwater managed without adverse impacts to adjacent properties
Construction Stormwater in North Carolina, Texas and Florida
North Carolina
Texas
Sites disturbing 1 acre or more need TCEQ construction stormwater coverage and a SWP3.
Florida
See the Florida SWPPP Compliance Guide.
Frequently Asked Questions
When does an NC project need NCG01 coverage?
When construction disturbs one acre or more, or is part of a larger common plan.
How do I apply for NCG01?
Submit an e-NOI through AccessDEQ after the erosion control plan is approved.
Can my engineer submit the e-NOI?
No, the financially responsible party on the approved plan must submit it.
When is an erosion control plan required?
For land disturbance of more than 1 acre, filed at least 30 days before work.
What governs post-construction stormwater design?
NCDEQ’s Stormwater Design Manual under 15A NCAC 02H .1000, plus local rules.
Does JRH Engineering obtain building permits?
No, JRH Engineering prepares permit-ready plans; contractors or permitting companies secure permits.
Want More Information on this Topic?
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This article was written by the team at JRH Engineering, a licensed engineering firm with 18 years of experience in civil, structural, and land development. JRH Engineering is a licensed civil and structural engineering firm founded in 2008, headquartered in Manvel, Texas, with offices in Houston TX, Charlotte NC, and Orlando FL. Certified WBE, WOSB, and HUB-eligible. Phone: (800) 227-9635 | sales@jrhengineering.net | jrhengineering.net. Texas PE license is F-10385. North Carolina PE license is P-3118. Florida license is 38516.
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