STATEWIDE OPEN-END FOR WETLAND RESOURCE EVALUATION
STATEWIDE, DELAWARE

A.D. Marble & Company has held several of DelDOT’s open-end contracts for Wetland Studies, Statewide. Currently, the company is working on a three-year agreement assisting DelDOT with wetland delineation studies, state and Federal permitting, and stream restoration design. Many of the task orders associated with the open-end contracts involve the coordination and preparation of USACE Nationwide permits and DNREC Subaqueous Lands permits. Over 70 permits have been prepared and obtained for various bridge replacement and corridor improvement projects throughout New Castle, Kent, and Sussex Counties. Under these contracts, A.D. Marble & Company has performed work on over 50 projects to date.

Other tasks include wetland delineations and threatened and endangered species work. Wetland delineations are expedited through use of GPS units or physical measurements, eliminating the need for conventional survey methods. The majority of the work orders consist of bridge replacement projects over freshwater, freshwater-tidal, and tidal waterbodies. The bridge projects consist of improvements to structures over large streams such as the Brandywine Creek or over small tax ditch type waterways. Projects may also include streambank improvements due to roadway corridor widening or existing eroding steambank conditions. A.D. Marble & Company’s Level 4 Rosgen-trained scientist conducts all work associated with streambank restoration design.

A.D. Marble & Company also attends monthly field reviews with regulatory agencies such as DNREC, USACE, National Park Service, National Marine Fisheries, State Historic Preservation Office, and county representatives. Through these field reviews, our staff has built a close working relationship with the agencies, allowing for expedited review of many of the permit applications. Permit preparation also includes assessment of ecological impacts to the natural environment through review of the design plans: the impacts are quantified using CADD or physical field measurements. A.D. Marble & Company then prepares and submits all permits on behalf of the Department and handles all coordination with the agencies during permit review process.

Additional tasks include coordination of water quality certifications, floodplain regulations with local governments, and coastal zone management regulations. Bog turtle evaluations are also conducted for projects within the known range of the turtle. All bog turtle surveys are conducted by A.D. Marble & Company’s USFWS certified bog turtle surveyor.

Contact Information
Joy Ford

Delaware Department of Transportation
P.O. Box 778
Dover, DE 19903