Woodstock Wastewater Treatment Plant
Location Woodstock, MD
Client Maryland Environmental Services
Size 50,000 GPD
Date of Completion 2022
GMB was tasked by Maryland Environmental Service (MES) to provide engineering services for a Preliminary Engineering Report and evaluation of treatment alternatives to replace the existing 50,000 gallon per day (gpd) Woodstock WWTP.
For these reasons, MES was pursuing upgrade of the existing treatment facility to Enhanced Nutrient Removal (ENR) treatment in anticipation of stricter limits for nutrients such as Nitrogen and Phosphorus for this facility. In addition, the facility is situated in an environmentally sensitive area within the bounds of Patapsco State Park and discharges to a tributary of the Patapsco River. In addition to a new ENR treatment system, GMB was also tasked to investigate replacement of the existing chlorination and dechlorination facilities with new UV disinfection equipment and identify other necessary improvements such as a new emergency generator, new automatic screening and grit removal equipment, renovation of the existing on-site laboratory and renovation of the existing restroom facilities.
After the preliminary engineering report was approved by MDE, GMB began the design phase for the Woodstock WWTP ENR Upgrade. Design Phase services included the demolition and replacement of the existing WWTP with a new Kubota Membrane Biological Reactor (MBR) treatment system, headworks facilities, instrumentation and controls, chemical feed systems, and associated appurtenances. GMB facilitated a Pre-Selection Procurement of the MBR treatment system and related critical equipment during the design phase to avoid complications during bidding and construction and limiting design efforts to one (1) MBR system supplier. GMB provided design drawings, technical specifications, and cost estimates at regular intervals during the design phase and coordinated application for and receipt of the MDE Construction Permit. GMB worked with MES to maximize the project’s eligibility for MDE Bay Restoration Fund (BRF) grants.
Following the design phase, GMB provided bid phase services to assist the Owner in advertisement and bidding of the project and review bids received to provide a recommendation for Award. GMB provided written responses to bidder questions for MES to issue in addenda.
GMB is providing construction phase services to facilitate the construction of the ENR Upgrade in compliance with the contract documents. GMB prepared Digital Conformed Documents, conducted a Pre-Construction Conference, and distributed minutes to all attendees. GMB conducts monthly Progress Meetings, reviews submittals, Requests for Information, and change orders and claims, and will prepare “As-Built” Drawings to certify the construction to MDE at the conclusion of construction.
The Notice to Proceed for construction occurred in Spring of 2021 with the construction anticipated to complete in Summer 2022.