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For the purposes of this submission, we are highlighting our experience with hydraulic modeling and the assessment, design and construction of waterlines. Hydraulic Modeling GHD performs hydraulic modeling of water systems from intake to distribution in order to determine flow rates, pressure requirements, fire flow, system demands and limitations, and to evaluate potential connections or emergency connections to surrounding communities. GHD utilizes the latest version of many modeling programs depending on client need including EPANET, Bentley WaterCAD, Bentley WaterGEMS, and InfoWater to perform static and dynamic computerized hydraulic network modeling, including fire flow, SCADA interface, water age analyses to determine pipe and storage size requirements. GHD also uses Bentley HAMMER to analyze transient conditions in pipelines to mitigate damage to pipelines caused by water hammer. Transmission and Distribution GHD is an industry leader in developing solutions for the transmission and distribution of potable water. Our staff has extensive experience designing pipe networks ranging from small diameter service laterals to large diameter transmission mains using a wide variety of pipe materials including ductile iron, steel, PVC, and HDPE installed via conventional excavation or trenchless methods. GHD’s pipeline engineers select the appropriate coating systems and pipeline materials for different soil conditions and service applications. They also provide appropriate solutions for cathodic protection. The condition assessment and rehabilitation of water supply lines requires specific experience with condition assessment technologies, risk assessment, public and permitting coordination, field safety, data management and analysis, construction technology and project management. GHD has realized efficiencies in both construction time and capital costs through the use of trenchless technologies for projects such as pipe bursting and replacement, directional drilling, and others. Trenchless technologies have also been applied by GHD to reduce environmental impacts and minimize traffic disruptions on watermain projects. As stated previously, GHD is member of the NASTT and stands at the forefront of modern technology on all aspects of locally available trenchless rehabilitation services. 4.3 Design Services GHD’s in-house resources can provide most services required to complete water distribution and sewer collection system projects. This provides a significant advantage to the Town in having a group of engineers with extensive knowledge of sewer facilities, stormwater, and water systems, as well as Town and firm expectations for quality, schedule, and budget. Our firm has qualified engineering design managers and support staff available to assist in the areas listed below: – Civil Engineering – Structural Engineering – Mechanical / HVAC Engineering – Electrical Engineering – Instrumentation, Automation and Control Engineering – Computer-Aided Design Services – Geographic Information Systems (GIS) GHD | Town of West Seneca | 12681649 | Engineering Services for Water and Wastewater Projects 8 Page 131 of 301