Pennsylvania and Delaware require stormwater management plans for most land development and redevelopment projects. NEC Solutions LLC designs cost-effective BMP systems that satisfy municipal engineers and get your project approved — across PA, NY, DE, and TX.
Civil engineering covers the design of systems that work with the land — drainage, grading, site layout, soils, and infrastructure. At NEC Solutions LLC, our civil engineering services are focused on the practical needs of homeowners, contractors, developers, and municipalities in Pennsylvania, New York, Delaware, and Texas.
We don't just prepare drawings — we solve real problems. When your site needs a stormwater management plan for a land development approval, we design a system that works within the site constraints and satisfies the municipal engineer. When you need soil testing for a new septic system, we coordinate the perc test, evaluate the results, and deliver the documentation the health department requires. When a proposed grading plan needs drainage analysis, we run the hydrology and make sure the numbers work.
Our civil engineering team works closely with our structural engineers, which means we can handle projects that span both disciplines — a combination that saves our clients time and coordination headaches. Whether your project is a single-family home site, a commercial development, or an industrial facility, we bring the same focused, practical approach to every civil engineering scope.
Tell us your project — we'll tell you how we can help.
Get a Stormwater Plan Quote →A complete stormwater management plan (SWMP) demonstrating your project meets state and municipal requirements — required for most land development and redevelopment projects in PA and DE.
Sized and designed detention and infiltration basins that control peak runoff and recharge groundwater — engineered to fit the space and soils available on your site.
Bioretention, rain gardens, permeable pavement, and vegetated swales — best management practices that manage runoff at the source while meeting water quality volume requirements.
E&S plans required during construction to control erosion and sediment discharge — a companion submission to your stormwater management plan on most PA and DE projects.
Written studies analyzing drainage impact for zoning hearings, floodplain determinations, and municipal engineer review — supporting your project's approval with defensible technical analysis.
We don't just deliver a plan and walk away — we respond to municipal engineer review comments and attend meetings when needed to keep your project moving toward approval.
Additions or new impervious coverage that trigger a township stormwater management plan requirement for your building permit.
Land development plan stormwater components for residential subdivisions, commercial development, and mixed-use projects.
A stormwater component to complete a permit submission package for general contractors and site contractors.
Stormwater engineering support for design teams needing a licensed civil PE on larger project teams.
Municipal engineers in Pennsylvania and Delaware review stormwater management plans closely — and reject a significant share of first submissions. Common reasons include hydrology calculations that don't match the actual site conditions, undersized BMPs, missing water quality volume provisions, and plans that don't account for downstream capacity.
At NEC Solutions LLC, we design every stormwater plan to anticipate what the reviewing municipal engineer will look for. That means accurate site data, appropriately sized systems, and a plan set that's complete on submission — minimizing review cycles and getting your project moving.
Call or submit online. Describe your project, location, and what civil engineering service you need.
We review your scope and provide a clear quote within 24 business hours — no vague estimates.
We gather existing survey, soil data, permit requirements, and any site-specific information needed for the design.
PE-stamped drawings, calculations, and reports prepared and delivered — typical turnaround 7–14 business days depending on scope.
We support municipal review and address agency comments until your civil approvals are in hand.
Chester County, Delaware County, Philadelphia, Bucks County, Montgomery County & statewide PA municipalities.
New York City, Long Island, Westchester, Hudson Valley & upstate New York communities.
Wilmington, Newark, Dover & New Castle County. Stormwater and septic services across all DE counties.
Houston, Dallas, Austin, San Antonio & communities statewide. Expansive clay soil expertise for TX sites.
For many home additions in PA, the main requirement is a structural engineer for the PE-stamped structural drawings. However, if your addition adds impervious coverage (a roof, slab, or paved area) beyond a certain threshold, your municipality may require a stormwater management plan from a civil engineer as part of the permit application. We can handle both structural and civil components, which simplifies the process considerably.
Municipal review timelines for stormwater management plans in Pennsylvania vary by township and project size. Smaller residential projects reviewed by the township typically take 4–8 weeks. Larger land development projects subject to county review or PA DEP review can take longer. We prepare the plan to address all anticipated review comments on the first submission — which is the most effective way to minimize overall approval time.
A percolation test (perc test) measures how quickly water drains through the soil on your property. If you're installing a new septic system in Pennsylvania — for a new home, an addition of a bedroom, or any project that increases sewage flow — you'll need a perc test and soil evaluation as part of the sewage permit process. The test is performed on your site with the township sewage enforcement officer present. We coordinate and support this process for clients in Chester County and throughout eastern PA.
Yes. For new construction projects where the soil bearing capacity is unknown, or for sites with fill, disturbed soils, or a history of problems, a geotechnical investigation provides the soil data needed to design an appropriate foundation. We coordinate soil boring programs, evaluate the results, and prepare a geotechnical report with foundation design recommendations. This is especially valuable for commercial projects and any site with unusual soil conditions.
Yes — we regularly support developers and builders on residential subdivisions, commercial land development projects, and mixed-use developments. We can serve as the civil PE of record for land development plan submissions or provide specific civil components (stormwater management, grading plans, geotechnical reports) as part of a larger design team. Contact us to discuss the scope and how we can best support your project.
Yes — and this is one of the real advantages of working with NEC Solutions LLC. Many projects need both structural engineering (building design, PE-stamped drawings) and civil engineering (grading, drainage, geotechnical). Having one firm handle both disciplines eliminates coordination issues between consultants, simplifies communication for the client, and often reduces overall project cost and timeline.
PE-stamped stormwater plans in PA, NY, DE & TX. Free quote within 24 business hours.
