MARYLAND DEPARTMENT OF THE ENVIRONMENT WATER and SCIENCE ADMINISTRATION NOTICE OF TENTATIVE DETERMINATIONS and PUBLIC HEARINGS FOR THREE (3) GENERAL PERMITS General Permit for Discharge of Compost Toilet Wastewater to Groundwater by Land Application - The Department proposes to reissue the State permit 18CT as the new 23CT. The 23CT permit applies to discharges of compost toilet wastewater to groundwater via land application in Maryland. The draft permit, fact sheet, and a detailed summary of proposed changes are available on MDE’s website at https://mde.maryland.gov/programs/water/wwp/Pages/18_CT.aspx. Hard copies of these documents may also be obtained directly from the Department for $0.36 per page. Any questions regarding the proposed permit should be directed to Jacob Robinson at Jacob.Robinson@Maryland.gov or by telephone at 410-537-3323, between the hours of 8 am and 5 pm, Monday through Friday. General Permit for Discharges Associated with Discharges from Tanks, Pipes, Other Liquid Containment Structures, Dewatering Activities, and Groundwater Remediation - The Department proposes to reissue the State/NPDES (National Pollution Discharge Elimination System) permit 17HT (NPDES No. MDG67) as the new 25HT. The 25HT permit applies to discharges of wastewater from tanks, pipes, other liquid containment structures, dewatering activities, and groundwater remediation in the state of Maryland. The draft permit, fact sheet, and a detailed summary of proposed changes are available on MDE’s website at https://mdewwp.page.link/HTGP. Hard copies of these documents may also be obtained directly from the Department for $0.36 per page. Any questions regarding the proposed permit should be directed to John Graff at John.Graff@maryland.gov or by telephone at 410-537-3323, between the hours of 8 am and 5 pm, Monday through Friday. General Permit for Discharges From the Application of Pesticides - The Department proposes to reissue State/NPDES permit 17PE (MDG87) as 25PE. This permit covers discharges to State waters from the application of biological pesticides, colorants, or chemical pesticides that leave a residue. It applies specifically to the use of pesticides or colorants for mosquito and other flying insect control, weed and algae control, nuisance animal control, or forest canopy pest control. The draft permit, fact sheet, and a detailed summary of changes are available on MDE’s website at https://mdewwp.page.link/PEGP. Hard copies of these documents may also be obtained directly from the Department for $0.36 per page. Any questions regarding the proposed permit should be directed to Lillian Deery at Lillian.Deery@maryland.gov or by telephone at 410-537-3323, between the hours of 8 am and 5 pm, Monday through Friday. Environmental Justice - These master general permits provide coverage throughout the state of Maryland. An Environmental Justice score cannot be calculated since they are not associated with any specific location. Thus, they are not subject to MD Environmental Article § 1–602(a)(2). Written Comments - Written comments may be submitted by mail, email, or fax. Persons who wish to comment on the draft permits may speak at the public hearing or submit written comments to the Department by 5:00 PM on August 13, 2026. For the 23CT, mail comments to the Maryland Department of the Environment, Water and Science Administration, 1800 Washington Boulevard, Ste. 455, Baltimore, MD 21230-1708, Attn: Mary Dela Onyemaechi, Groundwater Discharge Permits Division. Email comments to Mary.Dewa@Maryland.gov. Fax comments to (410) 537-3163, attention Mary Dela Onyemaechi. For the 25HT, mail comments to the Maryland Department of the Environment, Water and Science Administration, 1800 Washington Boulevard, Ste. 455, Baltimore, MD 21230-1708, Attn: Jonathan Rice, Industrial & General Permits Division. Email comments to Jonathan.Rice@Maryland.gov. Fax comments to (410) 537-3163, attention Jonathan Rice. For the 25PE, mail comments to the Maryland Department of the Environment, Water and Science Administration, 1800 Washington Boulevard, Ste. 455, Baltimore, MD 21230-1708, Attn: Paul Hlavinka, Industrial Stormwater Permits Division. Email comments to Paul.Hlavinka@Maryland.gov. Fax comments to (410) 537-3163, attention Paul Hlavinka. Public Hearing - For communication purposes, we encourage all interested individuals to register via the virtual event link below. A hybrid hearing has been scheduled for Monday, July 27, 2026, beginning at 4 PM. (A backup hearing has been scheduled for Monday, August 24, 2026, beginning at 4 PM.) The in-person hearing will be held in the Owings Mills Meeting Room at the Owings Mills Branch of the Baltimore County Public Library, located at the County Campus Metro Center at Owings Mills, 10302 Grand Central Avenue, Owings Mills, Maryland 21117. The virtual event may be joined via Google Meet. To participate online, you MUST register using the following link: https://mdewwp.page.link/PublicMeetings. There is also a phone listen-only option. Those who want to monitor the virtual hearing in listen-only mode can call +1 929-324-9522 and enter this PIN: 616 337 826#. The in-person meeting location is accessible to individuals with disabilities as defined under the Americans with Disabilities Act (ADA). Individuals who require reasonable accommodation or a language interpreter to participate in the meeting should contact MDE by email at mde.accommodations@maryland.gov or call 410-537-3152 (MD Relay TTY: 7-1-1) at least 5 business days in advance of the meeting. Any hearing-impaired person may request an interpreter for the event by contacting the Office of Fair Practices at (410) 537-3964 at least ten working days before the scheduled hearing date. TTY users should contact the Maryland Relay Service at 1-800-201-7165.  To Be Published On: June 18 and 25, 2026