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MDTA Police Training Facility

Location: Baltimore, Maryland Client: Maryland Transportation Authority

JMT provided full engineering design services for the construction of a new 45,000 sf Police Training Center and Indoor Firing Range facility, which has been registered for LEED® NC.  

Our client sought a new, 45,000 square foot Police Training Center for its police force, to be located at a former industrial site. The major elements of the building included a two-story training facility, office space, classroom space, athletic/fitness center, and an indoor weapons firing range with automatic targeting systems. Approximately 90% of the site would be located within the Chesapeake Bay Critical Area.

JMT was responsible for mechanical, electrical, plumbing, civil engineering, and environmental permitting for the design, as well as environmental permitting. This new building, designed to LEED® Silver Building Modeling for LEED® Analysis, was modeled based on LEED® criteria utilizing Trane Trace computer modeling and AutoCAD MEP Building Systems.

Unique A/E Services included:

  • Mechanical and Controls Systems: Complex HVAC for firing range utilizing combination ASHRAE and OSHA standards. Controls system included lighting, target operation, bullet trap and HVAC system. 
  • Electrical/IT/Standby Generation: Complete electrical distribution system including BGE service, lighting, FDAS, IT communications and smart class-room components.  Gas-fired, stand-by generation allowed the facility to operate without utility feed.
  • Civil/Site Development/Permitting: Site design for building, parking lot and access roads layout/grading; drainage design in accordance with Maryland State Highway Administration (MSHA) requirements; erosion and sediment control and Critical Area permitting; stormwater management; and landscape plans.
  • Facility Security: Due to the presence of weapons and ammunition associated with the firing range, specialized facilities security was required. Systems included paracentric locking hardware, structural vibration sensors, CCTV cameras, and computerized access control.
  • Bullet Trap and Target: Design of a bullet trap and automatic targeting systems. The trap system incorporated lanes capable of handling both pistols as well as high powered rifles. The targeting system was state-of-the art and provided a rotating target to allow training of friend-neutral-foe and hit sensing (response timing).
  • Firing Range Ventilation System: Design of a range ventilation system capable of handling either frangible or lead ammunition. The lead ammunition would be handled using HEPA filters.
  • Site Investigations/Grounds and Roads Improvements: Geotechnical investigations; field investigations to verify the presence or absence of jurisdictional wetlands, waters of the US, or floodplains; forest stand delineations; building, parking lot and access roads layout/grading; drainage design and computations in accordance with MSHA Drainage Manual and drainage drawings using MSHA standard details and procedures; erosion and sediment control; stormwater management; lighting and power of the site; signing and pavement marking; maintenance of traffic; landscape plans; utility design consisting of septic system; and surveys.
  • Utilities Extension: Extension of gas, water and electric to the facility which required coordination with several local utilities.

Environmental Services included:

Early coordination with the Chesapeake Bay Critical Area Commission was necessary to ensure compliance with all of the Critical Area provisions. Additionally, there was some question as to the proper critical area designation for the site. JMT conducted background research and reviewed the site history to present to the Commission representative as part of a successful effort to have the site designated as Intensely Developed Area.

The field investigations resulted in the identification and delineation of two wetland areas and the identification and characterization of forest land. The proposed facility, access road and parking lot resulted in the unavoidable impact to approximately 6,000 square feet of nontidal wetland within the critical area. As such, JMT prepared a Wetland Permit Application and Critical Area Report in an effort to secure the required approvals to construct the project. An alternatives Analysis was conducted to justify the project's environmental impacts.

Per Maryland Department of the Environment (MDE) and critical area regulations, JMT proposed the creation of approximately 12,000 square feet of nontidal wetlands as mitigation for the wetland impacts. JMT conducted an extensive search for on-site and off-site mitigation potential within the critical area. A cost/benefit analysis was conducted to identify the best mitigation site with the highest potential for success while replacing the functions and values of the impacted wetlands. JMT prepared and submitted a Phase 1 wetland mitigation plan detailing the concept for on-site wetland mitigation. JMT designed the 0.3 acre site to be compatible with the training facility and associated site improvements. Groundwater and overland flow contribute to the proposed wetland hydrology. Extensive soil amendments are proposed to ensure the successful establishment of wetland vegetation.

The critical area and MDE stormwater requirements were fulfilled through the innovative design of stormwater management facilities which included a stormwater management pond, a grass channel, and pocket wetlands for quality control to fulfill the 10% nutrient reduction in accordance with the critical area regulations. The stormwater plan resulted in the removal of more than double the total phosphorous as required by the critical area regulations.

JMT also conducted a reforestation site search as part of the Critical Area reforestation requirements.

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