Dam Engineering Services BOA

The Washington Suburban Sanitary Commission (WSSC) is soliciting sealed responses to establish Basic Ordering Agreements (BOAs) for Engineering Services with qualified consultants to provide essential support for the Engineering and Environmental Services Division in dam engineering services on an as-needed basis. Selected consultants will execute various task orders encompassing a range of engineering activities related to the design, maintenance, and operations of three dams owned by WSSC: the Little Seneca Dam, the Brighton Dam, and the T. Howard Duckett Dam.

The Little Seneca Dam is located on Little Seneca Creek in Montgomery County, Maryland, approximately two miles west of Germantown. Completed in 1985, the earth embankment dam has a maximum height of 99 feet and a crest length of 628 feet. It features a 70-foot-wide service spillway with concrete ogee crest structure, a 272-foot wide auxiliary spillway, an intake tower, and a gravity tunnel. The Brighton Dam is located on the Patuxent River in Montgomery and Howard Counties, approximately 10 miles northwest of Laurel. Constructed in 1943, the concrete Ambursen slab and buttress structure has a maximum height of 82 feet and total length of 600 feet, comprising 30 slab and buttress bays that are 20 feet wide. It includes an intake tower, powerhouse, 13 Tainter-gated spillway sections, silt under sluice outlet, and penstock. The Duckett Dam is located on the Patuxent River in Prince George's County and Howard County, approximately two miles northwest of Laurel. Built in 1954, the concrete dam has a maximum structural height of approximately 147 feet and crest length of 720 feet, with slab and buttress sections comprised of 25 concrete buttresses spaced 30 feet apart.

Consultants will be responsible for providing all necessary engineering services, including labor, materials, equipment, and overall project management to fulfill the specific requirements of each task order. Key deadlines include a Pre-Proposal Conference on January 28, 2026, Questions and Answers deadline of January 30, 2026, and a Proposal submission deadline of February 18, 2026 at 2:00 pm. Responses must be submitted via WSSC's eProcurement Portal at https://procurement.opengov.com/portal/wsscwater. Late responses will not be accepted.