The Richmond WWTF was originally built in 1972, receiving its last substantial upgrade in 2005 (designed by Hoyle Tanner) which added tertiary treatment and septage receiving. The facility acts as a regional septage receiving facility for the state and faces unique challenges such as experiencing a significant peak flow during wet weather events and being surrounded by a flood zone.
Hoyle Tanner completed a preliminary engineering report (PER) for the Richmond WWTF which identified hydraulic-related and age-related equipment needs. Future plant flows and organic loadings were analyzed to determine design conditions and evaluate the facility’s hydraulic and biological capacity. Of particular concern and immediate need was the condition of the influent pumps, which were not replaced as part of the 2005 upgrade, and were at imminent risk of failure.
Hoyle Tanner designed the recommended upgrade to the existing duplex influent pump system for the 20-year planning period for the purpose of purchasing and installing one of the proposed pumps ahead of the full WWTF upgrade project. Hoyle Tanner proposed a triplex dry-pit pump arrangement for this application and designed the piping modifications necessary to replace one pump with the intent that the new pump could be reused for the future triplex pump arrangement. Hoyle Tanner prepared final design drawings, specifications and bid documents for the Town to solicit bids to construct the pump upgrade project.
SERVICES
Study
Condition Assessment
Final Design
From the blog
Learn about ongoing projects and the innovative processes we employ for our clients.
Anyone who flies with any regularity has felt it: long lines, confusing circulation through a terminal, or flights delayed not because of weather, but because of airfield capacity issues....
Hoyle Tanner is excited to welcome Evan Raymond, PE, to our Ground Transportation Division as a Senior Transportation Engineer. Based in our Yarmouth, Maine office, Evan brings nearly a decade of experience delivering roadway and multimodal transportation projects across northern New England.
We are pleased to recognize our employees celebrating work anniversaries this month. Collectively, these individuals have contributed 109 years of service to Hoyle Tanner, demonstrating the dedication and commitment that drive our continued success. We thank them for their valuable contributions and congratulate them on their anniversaries!
Joshua Sklarsky joins Hoyle Tanner as the firm’s first Chief Technology Officer, bringing over 15 years of experience in technology leadership and innovation. Known for translating complex ideas into practical strategies, he will help drive digital transformation and strengthen the firm’s technology initiatives. His leadership comes at an exciting time of growth and investment in advanced technologies.
Drought is often understood as a period with too little rain, but its impacts extend far beyond dry landscapes. Drought status influences drinking water supplies, groundwater availability, infrastructure performance,...
Hoyle Tanner’s Maplewood Avenue Bridge Rehabilitation Project in Portsmouth, NH earned a Silver Engineering Excellence Award for its innovative approach to restoring and preserving the historic 1896 bridge.
At Hoyle Tanner, our strength starts with our people. Each year, our leadership team takes the opportunity to recognize individuals who are not only delivering great work for our...
Mountain condo community across the river from Loon Ski Resort upgrades drainage, roadways and landscaping. Hoyle Tanner is providing civil engineering design, permitting and construction administration services for a...
