Behind the Build: How We Install Storm Drainage Systems on Large Commercial Sites

When it comes to commercial construction, what’s underground is just as important as what’s above. One of the most vital parts of site development—and one that’s often overlooked—is the stormwater drainage system. At A&D Enterprises, we specialize in stormwater installation across North Carolina, helping commercial sites meet strict regulations, prevent flooding, and stay functional for decades.

Here’s a behind-the-scenes look at how we install high-performance storm drainage systems on large commercial sites across the Triad.


Why Stormwater Systems Matter

Stormwater isn’t just a nuisance—it’s a serious liability if not properly managed. Without a well-engineered and properly installed drainage system, a commercial site can face:

  • Erosion and sediment runoff
  • Foundation damage
  • Pooled water and flooding
  • Stormwater regulation violations

Especially in North Carolina, where both state and municipal standards are strict, managing runoff is critical to protecting the environment and ensuring long-term site stability.

Whether you’re building a distribution center, office park, retail space, or industrial facility, a commercial drainage system contractor like A&D Enterprises ensures your site handles water the right way—right from the start.


Our Process: Stormwater Installation Step-by-Step

Every jobsite is different, but our process for stormwater system installation follows proven steps for quality and efficiency:

1. Site Evaluation & Drainage Plan Review

We review the civil engineer’s stormwater management plan to understand the grading, flow direction, and volume requirements.

2. Excavation & Grading

Our team uses GPS-guided equipment to dig trenches or excavate detention basins according to exact plan specs. Proper slope and grading ensure water moves efficiently to the right collection points.

3. Pipe & Structure Installation

We install HDPE, concrete, or PVC storm pipes, as well as catch basins, manholes, and culverts. All components are placed and connected to handle the site’s runoff load.

4. Backfill & Compaction

The system is backfilled and compacted to prevent settling, using tested material for long-term durability.

5. Final Tie-Ins & Testing

Once connected to the outfall or retention area, we test the system for flow, inspect for leaks or misalignments, and ensure everything meets design specs.


Staying Compliant with NC Stormwater Regulations

North Carolina’s Department of Environmental Quality (NCDEQ) enforces stormwater rules that protect nearby waterways and prevent site damage. At A&D Enterprises, we stay up to date with local, state, and federal requirements, including:

  • NPDES permitting
  • Post-construction stormwater control measures (SCMs)
  • Erosion and sedimentation control plans

We also work directly with inspectors, engineers, and city officials to ensure each project passes final approvals without delays.


Tools and Equipment We Use

Our ability to handle large-scale drainage projects comes down to the right tools and trained crews. On a typical stormwater install, we deploy:

  • Excavators with trenching attachments
  • Laser and GPS grade control systems
  • Compaction equipment
  • Pipe lasers and survey tools for slope accuracy
  • Hydrostatic testing kits

These tools help us maintain precision and speed while keeping the jobsite safe and efficient.


Trust A&D Enterprises for Stormwater Installation in NC

We’ve helped build and support commercial sites across Guilford, Forsyth, Randolph, and Davidson Counties, installing storm drainage systems that meet spec, pass inspection, and last for decades.

If your next project needs an experienced stormwater installation team in NC, we’re ready to dig in.

Contact A&D Enterprises today to get a quote or schedule a site consultation.


Every successful project starts with smart drainage. Let’s build it right—below the surface.