Stormwater Management & Compliance — Done Right
Floods, erosion, and failed inspections can derail your project. At Amex Construction, we design, install, inspect, and maintain stormwater systems that protect your property and your permit. From catch basins to green infrastructure, we cover every phase of the job with precision and compliance you can count on. With years of experience, we deliver reliable solutions for developers, property managers, HOAs, municipalities, institutions, and commercial property owners.
Building for the Future
Stormwater management is more than compliance. It’s about sustainability, resilience, and protecting communities. Our green infrastructure and low impact development (LID) solutions combine environmental performance with long-term cost savings. Whether it’s a rain garden in a residential development or permeable pavement in a commercial lot, we bring practical, sustainable options to every project.
Stormwater Inspections & Compliance
In addition to construction and installation, our team provides stormwater inspections to keep your site compliant with state and federal requirements:
Construction Site Inspections – Ensure your active projects meet erosion control and runoff standards.
Post-Construction Inspections – Verify long-term stormwater system function for residential communities, commercial properties, and municipal sites.
Industrial Site Inspections – SWPPP-compliant inspections for facilities regulated under MA DEP, EPA, NPDES, Clean Water Act, and MS4 permit programs.
We help you avoid costly fines, protect water quality, and stay ahead of enforcement deadlines.
We don’t just tick boxes. We make sure your systems perform and pass inspection the first time.
Why Choose Amex Construction?
Compliance-First Approach – We understand Title V, MS4, SWPPP, and NPDES requirements and ensure your project meets or exceeds them.
Full-Service Partner – From permitting to excavation, installation, maintenance, and inspections.
Trusted Teamwork – We collaborate with engineers, designers, plumbers, electricians, and municipal agencies for seamless results.
Proven Experience – Stormwater projects completed for HOAs, developers, municipalities, schools, and businesses across the South Shore and Cape Cod.
Certified Specialists – Licensed for advanced septic systems and Environmental One (E/One) certified for grinder pump installations.
Protect Your Property & Stay Compliant
Uncontrolled runoff means erosion, sediment pollution, flooding, and costly regulatory fines. A failed inspection can stall your project, damage your reputation, or trigger expensive remediation. Our team keeps you ahead of risk by combining practical solutions with deep regulatory knowledge. Stormwater problems don’t just damage property — they create liability. Whether you’re a developer breaking ground, a property manager overseeing a community, or a municipality upgrading infrastructure, Amex Construction has the expertise and partnerships to get the job done right.
Who We Help
Developers & Builders
Turnkey stormwater systems for subdivisions, multi-unit housing, and commercial sites. We coordinate directly with engineers, soil evaluators, and conservation commissions to keep your approvals and schedules on track.
Property Managers, HOAs & Condo Associations
Protect your community from drainage issues and flooding. We repair and install catch basins, retention ponds, and drainage networks that keep properties safe, residents happy, and property values secure.
Municipalities & Institutions
From schools to public works projects, we partner with towns and agencies to deliver infrastructure that meets strict compliance requirements and stands the test of time.
Commercial & Industrial Property Owners
Parking lot flooding, storm drains, and site runoff issues can damage property and scare away tenants or customers. We provide drainage solutions that eliminate risk and protect your bottom line.
Erosion & Sediment Control BMPs
Effective erosion and sediment control is the backbone of stormwater management. We provide complete installation, maintenance, and inspection services for both temporary and permanent Best Management Practices (BMPs) — protecting your site during construction and keeping systems working long after the project is done.
Temporary BMPs (During Construction)
Silt Fences, Wattles & Erosion Control Blankets – Installed to stop sediment at the source and stabilize disturbed soils.
Construction Entrances & Track-Out Control – Stabilized pads, wheel washes, and cleaning stations to reduce debris on public roads.
Check Dams & Diversion Channels – Controls to slow flow, prevent washouts, and protect downstream systems.
Dewatering Controls – Pump filters, sediment traps, and inlet protection to keep discharges clean.
We inspect and maintain these BMPs weekly and after rain events, ensuring they remain effective, compliant, and in good repair until final stabilization.
Permanent BMPs (Post-Construction)
Stormwater Basins & Ponds – Built to manage runoff volumes, remove sediment, and promote infiltration.
Infiltration Systems – Trenches, chambers, and subsurface systems designed for long-term water quality performance.
Vegetated Swales & Bioswales – Sustainable, low-maintenance controls that filter runoff and support green infrastructure.
Catch Basins & Manholes – Installed, cleaned, and maintained for reliable long-term drainage.
Our post-construction inspection and maintenance programs ensure permanent BMPs keep meeting EPA, MS4, NPDES, and Mass DEP requirements for the life of the site.
Inspections & Compliance
Construction-Phase Inspections — SWPPP compliance checks during earthwork and site prep.
Post-Construction Inspections — Regular evaluations of installed BMPs for function, stability, and regulatory compliance.
Maintenance Programs — Scheduled cleaning, sediment removal, vegetation management, and system repairs.
With Amex Construction, you don’t just get BMPs installed — you get a partner ensuring they perform, pass inspection, and protect your site for years to come.
Drainage System Installation
What We Install
Catch Basins & Manholes
Custom-built or precast structures for collection and access
Installed with precision grading for efficient flow and maintenance access
Leaching Pits & Drywells
Subsurface infiltration solutions that reduce runoff and recharge groundwater
Designed to meet local infiltration requirements and soil conditions
Chamber Systems
Modular underground storage and infiltration chambers
Cost-effective solutions for sites with limited surface space
Drainage Pipe Networks
HDPE, RCP, and PVC systems installed for durability and hydraulic efficiency
Complete layouts including laterals, mains, and outlet structures
Retention, Detention & Infiltration Basins
Engineered basins to store, infiltrate, or slowly release stormwater
Designed and constructed to control peak flows and improve water quality
Our Approach
Precision Excavation & Installation — Proper grading, bedding, and backfilling for long-term stability.
Regulatory Compliance — Systems built to meet EPA, MS4, NPDES, and Mass DEP stormwater standards.
Integration with Site Design — Drainage tied seamlessly into erosion controls, roadways, and landscape plans.
Maintenance in Mind — Structures installed with future access and cleaning in mind, reducing lifecycle costs.
Inspections & Quality Control
We don’t just dig and drop. Every drainage install is verified through:
Elevation checks and laser grading
Compaction testing
Flow testing and system inspection prior to final cover
As-built documentation for permitting and owner records
A stormwater plan is only as strong as the infrastructure behind it. At Amex Construction, we install complete drainage systems designed for long-term performance, regulatory compliance, and durability under real-world conditions.
Green Infrastructure & Low Impact Development (LID)
Sustainable Solutions We Provide
Rain Gardens (Residential & Commercial)
Shallow, landscaped depressions that capture and filter runoff from roofs, driveways, and lawns
Reduce flooding, recharge groundwater, and add curb appeal
Designed with native plants that thrive with minimal maintenance
Bioswales & Vegetated Swales
Channel runoff through planted areas that filter sediment and pollutants
A natural, low-maintenance alternative to hard infrastructure
Permeable Pavements
Pavement systems that allow water to infiltrate through the surface into subsurface layers
Reduce surface runoff and ice hazards while improving infiltration
Infiltration Systems
Subsurface chambers, trenches, and drywells designed to mimic natural hydrology
Improve site sustainability while reducing pressure on municipal systems
Green Roofs (where applicable)
Vegetated roof systems that retain stormwater and reduce building energy costs
Ideal for urban sites with limited ground space
Why Green Infrastructure Matters
Regulatory Credit — Many municipalities and MS4 programs encourage or require LID practices.
Cost Savings — Reduced stormwater fees and minimized need for oversized detention basins.
Community Value — Greener, healthier spaces that improve aesthetics and property value.
Environmental Impact — Cleaner water, reduced flooding, and enhanced groundwater recharge.
Stormwater management isn’t just about compliance — it’s about designing systems that work with nature. Our Green Infrastructure solutions reduce runoff, improve water quality, and create long-term, sustainable value for properties of every size.
Stormwater Maintenance & Inspections
Stormwater systems only work if they’re properly maintained and regularly inspected. At Amex Construction, we provide complete inspection and maintenance services for residential, commercial, industrial, and municipal sites — from pre-construction through post-construction. Our goal is simple: keep your site compliant, functional, and protected.
Full Lifecycle Service
Pre-Construction
Site planning inspections to identify erosion risks and drainage needs
SWPPP development and permit support
Coordination with engineers and regulators to ensure compliance before ground is broken
During Construction
Weekly and post-storm inspections as required under EPA, NPDES, and Mass DEP rules
Verification of BMP installation (silt fence, track-out pads, sediment basins, inlet protection)
On-site adjustments to keep systems effective during active earthwork
Compliance reporting and photo documentation
Post-Construction
Long-term inspections of permanent BMPs (catch basins, manholes, basins, infiltration systems)
Maintenance services: sediment removal, vegetation management, structure repairs
Annual or semi-annual compliance inspections for MS4 municipal programs and NPDES permits
SWPPP updates and post-construction monitoring reports to satisfy regulatory agencies
Regulatory Compliance Expertise
Our inspection and maintenance programs are designed to meet and exceed:
EPA Clean Water Act requirements
National Pollutant Discharge Elimination System (NPDES) permits
MS4 municipal storm sewer system regulations
Mass DEP Stormwater Standards & Local Bylaws
SWPPP development, implementation, and updates
With Amex Construction, you’ll have confidence that your site passes inspection, avoids fines, and stays ahead of evolving regulations.
Why It Matters
Avoid costly fines and project delays from noncompliance
Protect property and infrastructure from erosion, flooding, and system failure
Keep regulators satisfied with clear, professional inspection reports
Extend the life of your stormwater systems with proactive maintenance
We don’t just check boxes — we keep stormwater systems working. Whether it’s a subdivision, a commercial site, an industrial facility, or municipal infrastructure, Amex Construction is your partner for reliable stormwater inspections and maintenance.