Biologically intensified filters

Biologically intensified filters for removing nitrogen

Urban Infrastructure

Earth Tech is a leader in utility asset management planning. Asset management is an integrated program to identify and plan for system repairs, maintenance, and upgrades, ensuring the sustainability of new and existing systems while minimizing costs, service disruptions and unexpected repairs. Communities must address the expensive challenge of improving aging infrastructure. The funds available to fill this gap are insufficient, causing communities to manage their assets differently and more proactively. Earth Tech is extensively involved with asset management planning to provide communities with a structured program to optimize the life-cycle of physical assets with the goal of minimizing long-term asset costs while ensuring reliable delivery of quality service. Earth Tech’s services in asset management include: Utilizing asset management software that links to GIS Using prioritization analysis to assigned limited funds to assets that have the greatest need Creating proactive O&M programs to cost effectively extends the life of assets

Wastewater

Improving water quality is not just a job - for us, it's a passion Earth Tech works with public agencies, private utilities, and industrial clients to deliver quality, cost-effective wastewater treatment solutions. Our wastewater treatment experience includes municipal wastewater treatment, industrial wastewater treatment, wastewater conveyance and water reuse systems for clients around the world. Our extensive services and ongoing commitment to excellence are characterized by an emphasis on highly individualized solutions, comprehensive environmental compliance planning and when necessary, accelerated timetables. Municipal Wastewater Treatment Earth Tech routinely helps wastewater clients improve their operations in the face of two major challenges: aging equipment and increased demand. Leveraging on our global experience, we offer a full range of treatment technologies that include biological treatment, physical/chemical treatment and design solutions that yield reliable, cost-effective service. Our start-to-finish wastewater services, include: Conceptual design and feasibility studies Facilities planning Treatment systems and sludge handling facilities design Flexible alternatives for design/build/operate/finance delivery approach Hydraulic modeling Permitting / licensing / regulatory compliance Residuals management System and upgrade design Liquid stream Biosolids Odor control Process control and instrumentation Construction / construction management System startup and troubleshooting Contract operations Treatment plant energy efficiency evaluations Industrial Wastewater Treatment Hundreds of industrial clients throughout the world have achieved and maintained quality, cost-effective water and wastewater treatment standards with assistance from Earth Tech. Our services are characterized by an emphasis on accelerated timetables, when necessary, highly individualized solutions and comprehensive planning for environmental compliance. Our industrial clients span a broad range of industries including: Process Engineering Process Optimization Waste Minimization Regulatory Compliance Treatability Studies Detailed Design Permitting/Licensing Construction/Construction Management Contract Operations Wastewater Conveyance Earth Tech has planned, designed, inspected, evaluated and rehabilitated millions of feet of sanitary and combined sewers and tunnels. Earth Tech’s services for wastewater conveyance, include: System planning and design Computer analysis and modeling I/I Analysis – rehabilitation Collection sewers Interceptors and force mains Pump stations Inspection and Testing Combined sewer system evaluations and rehabilitation Water Reuse Earth Tech is a pioneer in the design and implementation of recycled water projects around the world. Using the latest in membrane technology, we work in partnership with multiple agencies and communities to treat wastewater to acceptable standards for reuse in agricultural irrigation and other applications that will help foster economic development. Services specific to water reuse include: Master planning Feasibility studies Market analysis Financial analysis Distribution and treatment system development Flexible alternatives for design-build-finance-operate

Water

We ensure that an essential asset remains accessible and usable The growing demand for clean water poses new challenges for communities and companies: how do facilities and conveyance systems keep pace? Our services for the water industry include water supply, water treatment and water distribution. Earth Tech provides a complete range of services to small, intermediate and large water suppliers, from source development, water treatment, storage and distribution, to operation and administrative services. Water Supply Clean water is the lifeblood of a community, but, according to the Water Partners International, more than 1.5 billion people do not have access to a safe and adequate water supply. Less than 1% of the world's fresh water (or about 0.007% of all water on earth) is readily accessible for direct human uses. This number could increase to 2.3 billion people by 2025. Because the world’s fresh water supply is shrinking at an alarming rate, Earth Tech’s engineers and scientists are continually striving to develop technologies and products that will ensure a safe and reliable water supply for the world’s population. Desalinating seawater, for example, is thought to present one solution to the world's current and future water problems. At Earth Tech, we share the concern that the demand for water continues to exceed the available supply. Understanding the various characteristics of the water source is key to determining how best to use this precious natural resource. The underlying principles we apply to water source development include promoting environmental responsibility, ensuring the development and maintenance of renewable water sources, locating sources with adequate quantity to meet user demands and providing a supply that meets or exceeds regulatory requirements. Earth Tech evaluates each water source, and its impact on treatment, distribution and operations, providing a well-founded understanding of: Watershed and groundwater protection Watershed and well field capacity analysis Drought analysis Permitting Intake Structures Surface and groundwater water quality evaluations and monitoring Qualitative risk assessments Dams and impoundments Water Treatment In selecting the optimum treatment process, Earth Tech focuses on following industry standards set by regulatory agencies and leading authorities. Our expertise includes: Treatment plant rehabilitation and upgrades Conceptual and feasibility studies Facilities planning Design of treatment systems and sludge handling facilities Flexible alternatives for design/build/operate/finance delivery approach System and upgrade design Residuals Management Liquid Stream Hydraulic Modeling Process Control and Instrumentation Plant startup and troubleshooting Permitting / Licensing / Regulatory Compliance Construction / Construction Management Contract operations Membrane treatment Dissolved air flotation (DAF) Disinfection processes, including chlorination, chloramination, ozone, chlorine dioxide, and ultraviolet light. Treatment Plant energy efficiency evaluations Water Distribution Earth Tech applies the latest technologies to analyze, plan, build or rehabilitate water distribution systems. Providing a dependable supply that minimizes the risk of low pressures, contamination or lower quality water and developing systems that are safe to operate and maintain are our key considerations. Earth Tech’s services for water distribution include: Water system analysis Computer model applications Chlorine residual modeling Watermain design Transient analysis Pump station and PRV design Storage Reservoir design Leakage detection and assessment Dual distribution system design Tunnel Design Trenchless applications and rehabilitation programs

Water / Wastewater Technology and Products

Our commitment to excellence is unwavering Earth Techâs commitment to quality service, responsiveness, and technical excellence drives every project, regardless of size. We have earned national awards and recognition for innovative, cost-effective solutions fulfilling the needs of communities. Our suite of water and wastewater tools includes technologies and products from our sister company Nordic Water. We take pride in offering every client: Knowledgeable staff with practical understanding and approach to renovations for small, medium and large systems A team of specialists with in-field, hands-on experience solving problems for utilities A proven track record of responsive and cost-effective performance An operations mentality acquired through years of water and wastewater system contract operations and maintenance experience Extensive design experience with new, expanded, and upgraded facilities Earth Tech is world renowned for its state-of-the-art technologies and tools: INSTRUMENTATION AND CONTROL Plant computer systems Process controllers Conventional instrumentation Specialist analytical instrumentation Electrical control systems Telecommunications Data communications WATER TECHNOLOGIES Dissolved air flotation (DAF) Ozone UV disinfection Nanofiltration Membrane technology Nordic Water Products Clarifiers Sandfilters WASTEWATER TECHNOLOGIES Liquid Primary Secondary Activated sludge Attached growth Biological nutrient removal (BNR) Process modeling Tertiary Disinfection Natural systems / wetlands Solids Handling Solids Separation (primary and secondary settling, filtration) Anaerobic digestion Thickening / dewatering Conventional sludge stabilization Innovative high grade stabilization Composting Drying / incineration Alkaline stabilization Biosolids products Gas Odor control strategies/ planning Odor control modeling Odour containment / treatment Upstream odor abatement Biogas handling and treatment Cogeneration Industrial Wastewater Industrial liquid treatment Industrial residuals treatment Industrial air treatment WATER RESOURCES / INFRASTRUCTURE Hydraulic modeling Hydrological modeling GIS DTM LIDAR Satellite imagery 3D modeling

Water Resources

Earth Tech provides solutions today to ensure a better tomorrow Our engineers and scientists are innovative problem solvers who know how to develop intelligent, cost-effective and sustainable water resources solutions using powerful, state-of-the-industry technology. Our services to the water resources industry include hydraulic / hydrologic modeling, watershed management, water quality, and stormwater management. Through the application of adaptive management principles in the planning and design process, Earth Tech deftly integrates science and management to deliver the most targeted solution possible. Services for water resources include: Adaptive management Watershed master planning Lake management Stream restoration/bioengineering Hydrologic and hydraulic studies Water quality assessments Stormwater management National Pollutant Discharge Elimination System (NPDES) Permitting Wetlands restoration Sedimentation, scour, and basin design Watershed and reservoir yield studies Total maximum daily load analysis Public involvement and education Computational fluid dynamics Hyperspectral remote sensing and Geographic Information Systems (GIS) Forensic geochemistry Hydraulic / Hydrologic Modeling Computer models provide engineers and scientists with tools to obtain a sound understanding of the interrelationships among the various processes affecting conditions within a watershed. Whether it be flooding, poor water quality, groundwater contamination, the availability of water or excessive channel erosion, Earth Tech is a world leader in the application of models for complex watershed planning and design projects. Key to the success of any modeling effort is the effective and efficient simulation of various aspects associated with rainfall / runoff / water quality processes, or the pollutant fate / transport processes, within a watershed. The appropriate model must be matched to the problem being solved. Earth Tech integrates cutting-edge technologies, such as GIS, DTM, LIDAR, satellite imagery and parameter optimization techniques at each of the five phases of modeling, data collection, model development, calibration, validation and analysis of predicted results. Watershed Management Watersheds are living, dynamic systems that often reject conventional engineered solutions. Earth Tech's approach to watershed project development is to observe, implement, monitor, and modify. This adaptive management approach allows designs to perform more effectively in concert with the natural environment. It has been used successfully in sensitive watersheds and provides a surface water management plan that addresses not only current conditions, but evolving needs. As well, Earth Tech's staff has worked on watershed projects around the world to reduce pollution effects, provide flood damage reduction, restore ecosystems and identify alternative water supplies. Our unique capabilities in such areas as water quality assessment, pollutant source identification and three-dimensional flow modeling give Earth Tech an advantage in planning, designing, implementing and managing watershed projects. Water Quality Earth Tech is a leader in the use of bioengineering solutions for waterway and habitat restoration projects. Stream restoration efforts often require re-establishment of original stream patterns and profiles. We have enhanced habitats by evaluating vegetation along streams and rivers to restore natural tree and vegetation canopies, which is essential for maintaining proper water temperature for fish and other aquatic species. Earth Tech has performed field reconnaissance, conducted inventories, prepared conceptual designs and contract documents and provided construction observation for projects in both urban and rural watersheds. Our experience in analyzing and developing ecosystem-sensitive solutions allows us to move efficiently through the permitting process. Stormwater Management Increased emphasis on stormwater quantity and quality control is placing new demands on the limited fi