We execute sophisticated sewer system installations as general contractors to manage stormwater and sanitary flows effectively, ensuring environmental compliance and operational efficiency. Our team uses cutting-edge trenchless technologies and robust materials to deliver systems that minimize maintenance and maximize performance, following pre-established plans from small service lines to large trunk sewers.
We install precast concrete or corrugated steel culverts sized for peak flow rates, calculated per provided hydrological data, to handle stormwater surges beneath roads or embankments. These structures feature riprap aprons to dissipate energy and prevent scour, with bedding and backfill compacted to ASTM standards, ensuring structural longevity and hydraulic efficiency in high-runoff zones.
We construct multi-chamber separators from reinforced concrete, sized per specified flow estimates to capture grease and oil from commercial or industrial runoff, preventing downstream blockages and hydrocarbon contamination in sewer lines. Installation includes watertight seals, access risers for cleaning, baffled inlets, and coalescing plates to enhance separation efficiency, with units tested for hydraulic retention time to ensure compliance with waste management regulations and sewer system integrity.
We deploy open-cut or trenchless methods—such as horizontal directional drilling—to install PVC, HDPE, or concrete sewer pipes with laser-aligned gradients for consistent flow, following pre-set specifications. Each joint is sealed with rubber gaskets or fusion welding, tested for leaks under pressure, and bedded in granular material to prevent settlement, delivering a reliable network for urban or rural applications
Built for landfills, these systems use perforated HDPE pipes encased in geotextile-wrapped gravel, sloped per plans to collect and redirect leachate to treatment facilities, minimizing environmental impact. Our execution incorporates liner compatibility, pump stations for low-gradient sites, and regular pressure testing, ensuring containment and compliance with stringent groundwater protection standards
Our reinforced concrete outfalls and headwalls manage discharge into watercourses, built with energy dissipators like gabion baskets to prevent erosion at specified velocities up to 5 m/s. We align these structures with natural drainage paths, anchoring them with deep footings and backfilling with select granular fill, ensuring stability and long-term performance.
We install precast concrete manholes with polymer-coated interiors, featuring benching for smooth flow and heavy-duty cast-iron frames rated for traffic loads. Each unit is set on a compacted base, sealed with butyl mastic, and tested for infiltration, providing durable access points for maintenance across sewer networks
These smaller lines are installed with micro-tunneling or traditional trenching, using Schedule 40 PVC pipes sloped at 1-2% for gravity flow, connected to mains with wye fittings per plans. We ensure proper bedding and haunching to prevent deflection, followed by CCTV inspection to confirm alignment and integrity for residential or commercial hookups.
Constructed from precast concrete with cast-in-place grates, our catch basins capture runoff and debris, sized via provided runoff coefficients and linked to storm sewers with smooth transitions. Installation includes filter fabric liners and sediment traps, maintaining flow efficiency and reducing downstream siltation in urban drainage systems
We construct interceptors with baffled chambers to trap sediment and pollutants, built from durable concrete and sized for 25-year storm events per specifications, ensuring clean discharge. These units feature overflow bypasses and are installed with laser precision, tested for retention capacity to protect sewer infrastructure from clogging and flooding
Our team installs submersible sump pumps in precast concrete pits, equipped with check valves and discharge lines rated for continuous duty in flood-prone areas. Pits are lined with waterproof membranes and backfilled with gravel for drainage, with pumps sized via provided pump curve analysis to handle peak inflows, keeping sites dry and operational.
We construct linear trench drains with polymer concrete channels and galvanized steel grates, sloped at 0.5-1% per plans for surface water collection in high-traffic zones like parking lots. Installation includes tie-ins to storm sewers, load-rated for AASHTO H-20 standards, ensuring efficient drainage and resistance to heavy vehicle impacts
These large-diameter sewers use reinforced concrete or HDPE pipes, installed with tunnel boring machines or deep trenching, built for flows exceeding 500 L/s as specified. We reinforce joints with external wraps, test for exfiltration per AWWA standards, and stabilize with engineered backfill, supporting high-capacity municipal sewer networks.
Our perforated PVC or corrugated HDPE weeping tiles are laid in gravel trenches at 0.5% slopes per plans, wrapped in geotextile to filter fines, collecting subsurface water around roads or structures. Connected to outlets or sumps, these systems are hydrostatically tested to ensure effective drainage, preventing waterlogging and frost heave in cold climates.
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