Stormwater Management

Stormwater Management Solutions

CMS Stormwater is a certified North Carolina stormwater contractor providing comprehensive stormwater management services for municipalities, commercial properties, industrial sites, HOAs, and regulated sites across North Carolina. Stormwater management is a critical part of protecting property, infrastructure, and natural resources by controlling runoff volume and reducing pollutants carried by rainwater. Engineered stormwater control measures (SCMs) such as wet ponds, bioretention basins, infiltration systems, and swales are designed to treat runoff, reduce erosion, and improve water quality before water enters streams, rivers, and lakes. Without effective stormwater management, uncontrolled runoff can cause flooding, property damage, and increased sedimentation in receiving waters, leading to non-point source pollution concerns. CMS provides comprehensive stormwater solutions accross NC, that help property owners plan, implement, and maintain stormwater systems to protect assets and meet performance expectations.

Comprehensive Stormwater Management Services

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Stormwater Services

Importance of Stormwater Management

Stormwater management is a critical part of protecting property, infrastructure, and natural resources by controlling runoff volume and reducing pollutants carried by rainwater. Engineered stormwater control measures (SCMs) such as wet ponds, bioretention basins, infiltration systems, and swales are designed to treat runoff, reduce erosion, and improve water quality before water enters streams, rivers, and lakes. Without effective stormwater management, uncontrolled runoff can cause flooding, property damage, and increased sedimentation in receiving waters, leading to non-point source pollution concerns. For commercial, industrial, and regulated sites across North Carolina, proactive stormwater management supports regulatory compliance and reduces long-term operational risks. CMS provides comprehensive stormwater solutions that help property owners plan, implement, and maintain stormwater systems to protect assets and meet performance expectations.

Maintenance of Stormwater SCMs

Routine maintenance of stormwater SCMs is essential for long-term performance, as sediment buildup, vegetation overgrowth, and clogged inlets can significantly diminish treatment capacity and hydraulic function. Regular maintenance ensures that SCMs, such as wet ponds, permeable pavements, and sand filters, continue to capture and treat stormwater runoff as designed. Without ongoing care, SCMs can fail to remove pollutants effectively, increasing the risk of flooding and environmental impacts downstream. CMS provides scheduled maintenance programs tailored to each SCM, helping clients avoid costly failures and ensuring reliable stormwater performance.

Repairs of Stormwater SCMs

Stormwater SCM repair services are critical when systems demonstrate structural issues, sediment reduction in storage capacity, or impaired hydraulic performance. Repairs may involve restructuring outlet controls, restoring eroded embankments, replacing damaged components, or rehabilitating clogged media in filtration systems. Timely SCM repairs prevent small issues from developing into system failures that compromise water quality and increase risk of flooding. CMS delivers stormwater system repair expertise that addresses both routine and non-routine corrections to restore SCMs to their original operating condition.

Inspections of Stormwater SCMs

Stormwater SCM inspections identify maintenance needs, structural concerns, and performance deficiencies that could reduce treatment effectiveness or lead to regulatory non-compliance. Quarterly, annual, and post-storm inspections help owners track sediment accumulation, vegetation conditions, and hydraulic function to ensure SCMs operate as intended. CMS utilizes certified stormwater inspectors and documented inspection protocols to provide thorough evaluations and detailed reporting. These professional inspections support stormwater compliance goals and help guide maintenance and repair planning for each SCM device.

Stormwater Systems We Maintain

Aboveground Stormwater SCMs

Above-ground stormwater SCMs such as wet ponds, bioretention basins, vegetated swales, and permeable pavement systems manage stormwater runoff by slowing flow, promoting infiltration, and removing pollutants before discharge. Proper inspection, maintenance, and repair of above-ground stormwater control measures are essential to maintain hydraulic capacity, prevent erosion, and ensure long-term stormwater compliance in North Carolina.

Above-Ground Stormwater SCMs
CMS performs routine inspection, cleaning, vegetation management, sediment removal, and structural repairs to maintain above-ground stormwater SCMs, ensuring reliable performance, regulatory compliance, and long-term drainage function.

Bioretention Basin
CMS provides maintenance for bioretention basins including sediment removal, plant care, mulch replacement, inlet and outlet inspection, and routine cleaning to ensure proper stormwater filtration.

Bioretention Cells (Rain Gardens)
CMS maintains bioretention cells and rain gardens through vegetation care, debris removal, soil media management, and inlet inspection to support effective stormwater treatment and drainage performance.

Constructed Wetlands
CMS conducts maintenance for constructed wetlands including vegetation management, sediment removal, debris clearing, and outlet inspection to preserve stormwater treatment capacity and ecological function.

Debris Collection Devices
CMS maintains debris collection devices by removing accumulated trash, sediment, and pollutants while inspecting structural components to ensure reliable stormwater flow and pollution control.

Dry Detention Ponds
CMS performs maintenance on dry extended detention ponds including mowing, sediment removal, outlet structure inspection, and debris clearing to maintain proper stormwater storage and drainage.

Green Roof
CMS maintains green roof stormwater systems through vegetation care, drainage inspection, debris removal, and routine system checks to ensure efficient stormwater retention and roof protection.

Level Spreader – Filter Strips
CMS maintains level spreaders and filter strips by clearing sediment, repairing grading, managing vegetation, and ensuring even stormwater distribution for effective runoff filtration.

Outfalls
CMS performs maintenance on stormwater outfalls through debris removal, erosion inspection, structural repairs, and sediment clearing to maintain proper discharge and system stability.

Permeable Pavement Systems
CMS maintains permeable pavement systems through vacuum sweeping, sediment removal, joint inspection, and surface repairs to preserve stormwater infiltration and pavement performance.

Permeable Pavers
CMS performs maintenance on permeable pavers including joint cleaning, vacuum sweeping, debris removal, and surface inspection to maintain effective stormwater infiltration and pavement durability.

Retention Ponds
CMS maintains retention ponds through vegetation management, sediment removal, inlet and outlet inspection, and debris clearing to support continuous stormwater storage and treatment.

Sand Filter System (Aboveground)
CMS performs maintenance on aboveground sand filter systems including sediment removal, filter media inspection, debris clearing, and structural checks to maintain effective stormwater treatment.

Vegetated Treatment Swales
CMS maintains vegetated treatment swales through mowing, sediment removal, vegetation management, and debris clearing to support effective stormwater conveyance and filtration.

Underground Stormwater SCMs

Underground stormwater SCMs, including detention vaults, chamber systems, infiltration trenches, and sand filters, provide high-capacity stormwater storage and treatment while preserving valuable surface space on commercial and industrial sites. Routine stormwater inspection, sediment removal, and structural maintenance are critical to ensure underground stormwater systems operate efficiently, prevent blockages, and remain compliant with stormwater management requirements.

Catch Basins
CMS maintains catch basins by removing sediment and debris, inspecting grates and structures, and ensuring proper drainage to keep stormwater systems functioning effectively.

Hydrodynamic Separators
CMS performs maintenance on hydrodynamic separators including vacuum cleaning, sediment removal, inspection of internal components, and debris extraction to maintain stormwater pollutant removal efficiency.

Infiltration Trenches / Infiltration Systems
CMS maintains infiltration trenches and systems by removing sediment buildup, inspecting inlets, restoring infiltration capacity, and ensuring proper stormwater drainage and groundwater recharge.

Proprietary Filtration Devices (e.g., StormFilter)
CMS maintains proprietary filtration devices such as StormFilter systems through cartridge replacement, sediment removal, system inspection, and routine servicing for optimal stormwater treatment.

Rainwater Harvesting Systems
CMS provides maintenance for rainwater harvesting systems including tank inspection, debris removal, filter cleaning, and pump checks to ensure efficient stormwater reuse.

Sand Filter Systems (Underground)
CMS performs maintenance on underground sand filter systems including sediment removal, filter media inspection, confined-space cleaning, and structural checks to maintain treatment performance.

Storm Sewer Systems
CMS maintains storm sewer systems through pipe inspection, debris removal, jetting, and structural repairs to ensure reliable stormwater conveyance and drainage.

Stormwater Chamber System
CMS maintains stormwater chamber systems through sediment removal, inlet inspection, vacuum cleaning, and structural evaluation to preserve underground stormwater storage capacity.

Underground Detention Pipe Systems (CMP/HDPE)
CMS performs maintenance on underground detention pipe systems by inspecting pipes, removing sediment buildup, cleaning inlets, and ensuring proper stormwater storage and flow.

Underground Detention Vaults (Concrete)
CMS maintains underground concrete detention vaults through sediment removal, structural inspection, debris clearing, and confined-space cleaning to ensure effective stormwater storage.

Comprehensive Stormwater Compliance Repairs

CMS specializes in comprehensive stormwater compliance repairs, including pipe lining, culvert replacement, storm drain and catch basin cleaning, manhole rehabilitation, sinkhole repair, and structural infrastructure restoration.

Our team also addresses critical maintenance and stabilization needs such as erosion repair, slope stabilization, sediment and debris removal, inlet and outlet dissipator repair, overgrown vegetation management, pond dredging, stream restoration, permeable pavement repair, and bioretention system restoration to maintain regulatory compliance and system performance.

Stormwater Pipe Lining (Trenchless Pipe Repair):
CMS excels in trenchless stormwater pipe lining solutions, restoring aging or collapsed pipelines without disruptive excavation while protecting roads, utilities, and surrounding property infrastructure.

Culvert Replacement & Mitigation:
CMS focuses on culvert replacement and hydraulic mitigation, upgrading undersized or deteriorated crossings to safely convey increased stormwater flows and reduce roadway flooding risks.

Storm Drain & Catch Basin Cleaning/Repair:
CMS is proficient in storm drain and catch basin cleaning and repair, removing sediment, debris, and blockages to restore drainage capacity and prevent localized street flooding.

Erosion Control & Slope Stabilization:
CMS is highly experienced in erosion control and slope stabilization, implementing engineered solutions such as riprap, grading, and stabilization systems to protect outfalls and vulnerable slopes.

Retention & Detention Pond Dredging/Maintenance:
CMS demonstrates expertise in retention and detention pond dredging and maintenance, removing accumulated sediment to restore storage capacity and ensure proper stormwater management performance.

Stream Restoration & Stabilization:
CMS is well-versed in stream restoration and stabilization, repairing eroded streambanks and reinforcing channels to improve flow stability and reduce sediment transport in urban environments.

Manhole and Structure Rehabilitation:
CMS specializes in manhole and stormwater structure rehabilitation, applying advanced coatings and structural repairs to restore deteriorated concrete and extend infrastructure service life.

Sinkhole Investigation & Repair:
CMS has extensive capability in sinkhole investigation and repair, diagnosing underground pipe failures and implementing structural stabilization and pipeline restoration to prevent further ground collapse.

Permeable Pavement Installation/Repair:
CMS is skilled in permeable pavement installation and repair, replacing impervious surfaces with porous systems that enhance infiltration, reduce runoff, and support sustainable stormwater management practices.

Bioretention / Rain Garden Restoration:
CMS is adept at bioretention and rain garden restoration, repairing landscaped filtration systems to improve stormwater treatment, infiltration capacity, and long-term green infrastructure performance.

Overgrown Vegetation Management:
CMS effectively manages overgrown vegetation within stormwater systems, clearing invasive growth from channels, ponds, and easements to restore proper water flow and maintain regulatory compliance.

Structural Repairs:
CMS is experienced in structural stormwater repairs, restoring damaged concrete, headwalls, pipes, and drainage structures to maintain system integrity and ensure long-term stormwater performance.

Sediment and Debris Removal:
CMS specializes in sediment and debris removal, clearing accumulated materials from stormwater infrastructure to restore hydraulic capacity and reduce flooding or blockage risks.

Inlet and Outlet Dissipator Repair:
CMS is proficient in inlet and outlet energy dissipator repair, restoring riprap and stabilization systems that reduce water velocity and protect downstream channels from erosion.

Erosion Repair:
CMS excels in erosion repair, stabilizing compromised soils and stormwater outfalls using engineered solutions that prevent further land loss and protect surrounding infrastructure.

Routine/Quarterly Inspections

CMS provides routine quarterly stormwater inspections to evaluate stormwater control measures, verify BMP functionality, ensure regulatory compliance, and identify sediment buildup, erosion, or drainage issues.

Our inspectors document stormwater infrastructure conditions, photograph deficiencies, and recommend maintenance actions to maintain stormwater management system performance, protect water quality, and meet municipal compliance requirements.

Post-Storm Inspections

CMS conducts post-storm stormwater inspections after significant rainfall events to evaluate stormwater control measures, detect erosion, sediment displacement, flooding impacts, and structural damage affecting system performance.

Our stormwater specialists assess drainage structures, detention basins, conveyance systems, and BMP components to ensure proper operation, regulatory compliance, and long-term stormwater management effectiveness.

Annual Certified Inspections

CMS performs annual certified stormwater inspections conducted by qualified stormwater professionals to evaluate stormwater BMP functionality, structural integrity, maintenance needs, and regulatory compliance documentation.

Our certified inspectors provide detailed stormwater inspection reports, compliance verification, maintenance recommendations, and documentation required by municipalities, permitting authorities, and environmental regulations.

As-Built/Final Inspections

CMS conducts as-built and final stormwater inspections to verify stormwater control measures are constructed according to approved engineering plans, specifications, and stormwater management permits.

Our inspection team confirms proper installation of drainage infrastructure, detention systems, and stormwater BMPs, ensuring compliance with design standards before project closeout or regulatory approval.

Remedial/Repair Inspections

CMS performs remedial and repair stormwater inspections to identify damaged stormwater infrastructure, failing BMPs, sediment accumulation, and drainage deficiencies requiring corrective maintenance or rehabilitation.

Our stormwater inspection specialists evaluate repair effectiveness, verify stormwater system functionality, and ensure remediation actions restore stormwater management performance and regulatory compliance.

Key Types of SCM Inspections

CMS excels in professional stormwater inspection services, ensuring stormwater control measures (SCMs) operate efficiently and remain compliant with local, state, and federal regulations. Our team delivers expert stormwater management inspections, compliance monitoring, and BMP performance evaluations to protect water quality and prevent costly violations. CMS provides reliable, data-driven stormwater inspection solutions for municipalities, HOAs, commercial properties, and developers seeking regulatory compliance and environmental protection.