Trappe East Wastewater Treatment Plant Permit​​​

Notice of Tentative Determination and Public Hearing

State Application Number: 19-DP-3460

Town of Trappe, P.O. Box 162, Trappe, Maryland 21673 and Trappe East Holding Business Trust, 1960 Gallows Road, Suite 300, Vienna, VA 22182 submitted an application for a permit to discharge an average of 540,000 gallons per day of treated domestic wastewater from the Trappe East Wastewater Treatment Facility, located at East End of Backdown Road, Trappe, Maryland, to groundwater via a spray irrigation system.                                                              

The Department has reached a tentative determination to issue the permit with the following limitations and conditions: (1) BOD5: 10 mg/l (monthly average); (2) suspended solids: 10 mg/l (monthly average);(3) total nitrogen: 3 mg/l (monthly average); (4) total phosphorus: 0.3 mg/l (monthly average); (5) fecal Coliform < 3 MPN/100 ml (monthly geometric mean) and (5) Ultimate permitted flow: 540,000 gal/day (yearly average). Approval of the permitted flow to 540,000 gpd is divided into five separate phases. Currently the permittee is at phase I.A and is authorized to discharge 37,500 gpd of flow. 

The following conditions are also a part of this permit: 1) The Permittee shall monitor groundwater quality via 12 monitoring wells; 2) The Permittee shall monitor surface water quality via 3 sampling stations installed at tributaries of Mile Creek; 3) The wastewater treatment plant and spray irrigation system shall be monitored by a certified operator and 4) A storage pond with a volume of no less than 75 days of the permitted daily average wastewater flow shall be provided. 5) The permittee shall operate the spray irrigation system in conformance with the approved nutrient management plan. 

The first notice on MDE's tentative determination was published on June 25, 2021 and July 2, 2021 in the newspaper "The Star Democrat." 

The Department received a request for a public hearing on the tentative determination for the above permit and the hearing was held on Thursday, October 28, 2021 at 5:00 PM. The hearing was in person and located at the following address:

Talbot County Community Center​​ - Curling Rink
10028 Ocean Gateway
Easton, MD 21601


UPDATE: AS REQUESTED DURING THE PUBLIC HEARING, THE COMMENT PERIOD HAS BEEN EXTENDED TO DECEMBER 6, 2021 at 5:00PM.

Written comments concerning the tentative determination will be considered in the preparation of a final determination if submitted mary.dewa@maryland.gov or to the following address on or before DECEMBER 6, 2021

Attn.: Mary De​la Onyemaechi, Chief, Groundwater Discharge Permits Division
Maryland Department of the Environment
Water and Science Administration
1800 Washington Blvd., Suite 455
Baltimore, Maryland 21230-1708



The draft permit and supplemental documents can be found in the links below:

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