Infrastructure

Civil site development design begins at the planning stage of a development project and carries through design, permitting, and construction. Whether working on a single site or multi-lot development, engineers actively work with project teams and local jurisdictions to proactively identify potential challenges.

Civil site development design encompasses numerous design needs, including off-site infrastructure capacity evaluation, site grading and drainage, ADA site accessibility, building coordination, water and sanitary sewer services, fire projection, roadway, access, and parking lot design. Understanding local regulations and receiving design approval is critical for advancing development projects and achieving timeline expectations.

Trihydro has over 20 years of civil site development design experience, including working with architectural project teams on new building construction or renovation projects as well as working on multi-lot subdivision developments. We provide surveying and civil engineering services, including topographical mapping, boundary surveys, subdivision platting, site grading and drainage, stormwater evaluations, utility design (e.g. water, sanitary sewer, and storm sewer), and roadway design services.

Our professionals can also address civil site design projects with environmental or ecological considerations. For example, we can assess a project’s potential environmental impacts, perform wetlands delineations, and provide mitigation solutions if required. Because each civil site design is as unique as the site on which it will be developed, Trihydro actively coordinates with project team members to design a site that meets client objectives and regulatory requirements.

Water system master planning serves a critical role in evaluating drinking water systems and preparing a roadmap for future system improvements to keep up with increased demands while addressing aging infrastructure. Water source, storage, pumping, transmission, and distribution system components are evaluated alongside water quality, water rights, operations and maintenance, and other items to identify structural and non-structural improvement recommendations.

Following system evaluation and analysis, an implementation plan is prepared. The implementation plan details project priorities, estimated construction costs, and a proposed implementation schedule, serving as a step-by-step guide for completing system improvements.

Trihydro works with clients to identify requirements, inventory and evaluate existing water systems, complete population projections and water demand forecasting, complete hydraulic water modeling and calibrations, identify proposed solutions or required expansion projects, and develop implementation plans, complete with financial planning and scheduling.

Our engineers are also experienced in providing water rate studies. These preliminary analyses are beneficial in determining if capital improvement projects can be adequately funded through current water rate structures or if adjustments may be needed. Completing a comprehensive water system master plan allows necessary projects to be planned and budgeted, and provides a framework so that future projects are coordinated with one another to meet overall system goals and objectives.

Trihydro designs functioning water distribution systems, including components such as ground and elevated storage tanks, pump stations, supervisory control and data acquisition (SCADA) controls, transmission mains, and distribution lines. We specialize in analyzing, modeling, planning, and designing water distribution systems. We perform hydraulic analyses to determine available water supply and flow conditions to develop best-fit distribution improvements.

Trihydro uses water distribution system modeling software to efficiently size pipe, storage, and pumping facilities to meet instantaneous, short-term, and long-term water demands. Our water distribution experts also evaluate pressure zones to assess and select storage facility options that are cost-effective and meet pumping system requirements. We prepare complete and thorough bidding and construction documents that allow for fair and competitive bids and help reduce change orders during construction.

With a thorough understanding of water service needs, our team can design new water distribution systems or alter existing systems. Based on our past project experience, we recognize one of the primary sources of construction cost and schedule overruns is encountering unidentified utilities. Our standard practices involve additional effort in the research and investigation phase to identify existing utilities and potential conflicts. We maintain working relationships with subsurface utility contractors who assist with utility locates during our preliminary engineering phase.

Trihydro offers comprehensive wastewater master planning services, including planning, design, wastewater system modeling, permitting, construction administration, and commissioning of wastewater treatment and delivery projects. We understand wastewater system master planning, funding options, design, and construction. Additionally, Trihydro's professional engineers are well-versed in coordinating project activities with other entities, including obtaining regulatory agency approvals for treatment plant construction.

As part of wastewater master planning, Trihydro analyzes population growth, growth trends, and land use zoning and planning. We have experience performing preliminary sizing, identifying an optimal layout, and estimating costs for wastewater system components including gravity lines, lift stations, and new wastewater treatment plants.

Our wastewater master plans also include an analysis of permit requirements. Since permanent treatment facility projects may take several years to be approved, permitted, and constructed, we also identify and include interim options to support services. After completing a wastewater master plan, Trihydro assists with necessary applications and approvals from relevant public utility commissions and other oversight entities.

Effective wastewater collection and treatment system design allows public and private utilities and facilities to improve effluent treatment, enhance compliance efforts, and reduce costs. Domestic wastewater collection systems are comprised of a network of infrastructure that collect and convey wastewater. Effective wastewater system design requires an understanding of wastewater flow, wastewater load, and topography to establish system criteria for gravity and/or pressure components, to select the optimal type of collection system, and to establish system layout. Additionally, due to the underground nature of wastewater collection systems, a thorough understanding of other underground utilities is critical to designing an effective system without conflict.

Our team has designed numerous wastewater collection systems including lift stations, low-pressure sewer systems, and gravity collection systems. Trihydro’s infrastructure professionals also provide wastewater treatment plant design services including sequencing batch reactor and extended aeration plants, as well as designing plant headworks, disinfection, and tertiary treatment. We routinely evaluate new technologies to design cost-effective and efficient facilities.

Trihydro offers expertise in municipal, rural, and industrial wastewater collection and treatment system design, including project planning, data collection, evaluation, and constructability. Our licensed engineers design functioning collection systems that fulfill the needs of customers in rural areas, small municipalities, and large cities. We also assist industrial facilities with their wastewater collection system needs. We are experienced in designing systems for peak hourly flow of the base population and understand other critical design factors such as average daily flow, loading, infiltration, pipe material and sizing, depth of excavation and cover, velocity, and elevation.

Stormwater basins, or detention and retention ponds, serve a critical role in managing runoff. When land gets developed, hard surfaces like roads and buildings reduce the amount of permeable or pervious area available to absorb and filter water. Without proper stormwater controls, the risk of flooding increases. Stormwater management techniques, like stormwater basins, can also help remove sediment and debris runoff collects as it flows over impervious surfaces. Stormwater systems provide the infrastructure to collect and convey stormwater runoff to the desired outfall, which is typically a natural watercourse. Stormwater treatment devices and components are often included within stormwater systems

Trihydro provides comprehensive stormwater management services focused on reducing pollutants and managing runoff volume. Our experts know how to handle the storage, treatment, and monitoring of stormwater runoff. We provide stormwater program planning, data collection, system evaluation and implementation, regulatory compliance, design, and construction management.

Our professionals take a holistic approach to stormwater solutions; we review the overall storm system and address site-specific components to develop optimal stormwater improvements and controls. We have knowledge and understanding of the latest best management practices (BMPs) and familiarity with stormwater controls such as detention basins, retention/infiltration basins, hydrodynamic devices, infiltration trenches, and biofiltration swales.

Our team performs hydrologic and hydraulic analyses to properly design effective stormwater systems. We use traditional and state of the art modeling software packages such as EPA's Storm Water Management Model (SWMM), HEC-RAS, HEC-HMS, FlowMaster, AutoDesk Storm and Sanitary Analysis, AutoCAD Civil 3D, HY-8, and SewerGEMS to design and analyze stormwater infrastructure. This includes inlets or catch basins, manholes, storm sewer pipelines, culverts, storage basins, and open channels.

Trihydro understands the importance of regulatory compliance and coordination related to stormwater management. We have long-standing relationships with regulators and pride ourselves on good upfront communication with agencies and project stakeholders. Our staff has a thorough understanding of the National Pollutant Discharge Elimination System (NPDES) and associated permits, stormwater pollution prevention plans (SWPPP), municipal separate storm system (MS4) general permits, and stormwater management programs (SWMP).