IFB 05-22 SWM Facilities Improvements: Northeast Park

The Project is a stormwater, stream restoration, and stabilization project at Northeast Park in the City of Rockville, MD. The Project includes furnishing of all materials, labor, equipment, tools and services, and all other associated work as shown on the Construction Drawings and included in these documents.SWM Facilities Improvement: Northeast ParkThe Northeast Park is located north of Neal Drive and Wesley Road, south of Taft Street, and east of Gude Drive in the City of Rockville in Montgomery County, Maryland. The facility is located within the Rock Creek Watershed (MD Basin Code 02140206) and was originally constructed in 1973 as part of the Redgate Farm Pond cluster. In 2005, the facility was converted into an extended detention pond to provide water quality treatment to a 51.07 acre drainage area (26.59 acres impervious). Despite regular dredging over the past five years, a recent inspection of Northeast Park SWM Pond identified a 91 percent loss of capacity due to

sedimentation. Functionality is to be restored through a facility retrofit which will provide additional storage volume and an improved maintenance access. End-of-road treatments will also be installed at Neal Drive and Wesley Road to intercept concentrated flow upstream of the SWM pond and provide additional water quality treatment. PRE-BID CONFERENCEA virtual, telepresence pre-bid meeting will be held on TUESDAY, AUGUST 02, 2022, AT 02:00 PM. Individuals interested in viewing the project location may participate in the site visit referenced above prior to the pre-bid meeting. Bidders must register below in order to attend the meeting. This meeting is not mandatory; however, bidders are strongly encouraged to attend. Register for the Virtual Pre-bid Meeting Here: Registration LinkDEADLINE FOR QUESTIONSQuestions pertaining to this bid may be directed to Jonathan Pierson, Assistant Director via the City’s Collaboration Portal only at https://contracts.rockvillemd.gov/gateway/Default.aspx no later than FRIDAY, AUGUST 12, 2022, AT 10:00 AM. Oral answers to questions relative to interpretation of specification or the bid process will not be binding on the City.The stream restoration portion will stabilize and restore the upstream channel to reduce sediment loading to the pond. This includes removing and replacing the existing 48-inch RCP outfall pipe and installing a standard State Highway Administration (SHA) headwall. Runoff from the proposed storm drain improvements will transition from the outfall downstream approximately 280 linear feet through a series of four riffle-weirs and pools. This will restore floodplain connectivity, stabilize channel banks and improve stream habitat. Large wetland areas adjacent to the channel will be regularly flooded to sustain wetland vegetation and manage flashy stormwater flows.PROJECT CLASSIFICATIONThe estimated cost/classification of this project is within the range of $1,000,001 to $2,500,000 (Class D). This range is in accordance with project classifications established by the State of Maryland DGS.