Municipal Project Profiles | P2S
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Municipal Project Profiles

City of Bothell

City of Bothell, Fire Station 45

Location: Bothell, WA

Project Overview: To provide enhanced fire protection and emergency services to its community, the City of Bothell replaced two existing fire stations in situ through a progressive design-build effort. The new Canyon Park Fire Station (Fire Station 45) comprises 14,000 SF in two stories and accommodates eight staff and four apparatus bays. P2S designed sustainable HVAC systems that contribute to having excellent air quality and a low building energy use index (EUI) - the building EUI is 38 kbtu/sf/yr compared to 68 for a baseline fire station. The fire station facility consists of distinct zones - high exposure, moderate exposure, and safe area - to better isolate hazardous fumes and keep the living areas safe. The high-hazard area contains contaminated items and storage of chemicals, as well as any items with potential carcinogen exposure. This area has constant exhaust to maintain a negative pressure relative to the surrounding rooms.

Solution: As the mechanical engineer and plumbing designer, P2S participated heavily as part of the team with the City, the general contractor, the architect, and the mechanical contractor. Our design process included weekly ‘Big Room’ type meetings for coordination and collaboration. During this period, we maintained a transparent and open log of design coordination items and cost options.

The primary HVAC system controls for this fire station are manufacturer-based. However, there is also a custom DDC (Direct Digital Control) system overlay. This enables the City to monitor and control specific HVAC system parameters. The City of Bothell can remotely monitor alarms, maintenance requirements, and system set points from City Hall or other locations where facility operations personnel are located and dispatched.

In the apparatus bays, there are ventilation systems that monitor the CO2 and noxious gas levels. The exhaust air systems are modulated to maintain good air quality and maintain negative pressure in the bays relative to the rest of the fire station. The building ventilation systems work together to provide the normally occupied rooms at a positive pressure compared to the apparatus bays. The occupied station ventilation systems also have high-quality particulate filters (MERV 13 or better). These HVAC features maintain good air quality and prevent noxious gases from entering the occupied zones.

This project was awarded a 2023 ACEC WA Engineering Excellence Award, in the category of Best in State: Silver Award, Future Value to the Engineering Profession.

City of Santa Clarita

City of Santa Clarita, Canyon Country Community Center

Location: Santa Clarita, CA

Project Overview: Canyon Country Community Center is a 25,000 square foot building on a 6.5 acre lot developed through a two year community engagement process to provide key resources for residents of surrounding communities in the City of Santa Clarita. The building, which includes a gymnasium, multipurpose event space, fitness rooms, various activity rooms, and a catering kitchen, is home to a variety of community programs. The LEED Silver project also includes outdoor spaces with walking trails, a basketball court, playground, outdoor event space, and play field, giving the community a place to gather and connect.

Solution: P2S provided mechanical, electrical, plumbing, and low voltage engineering services for the project with an overall objective of designing systems that fit the community needs, budget, and sustainability goals established by the City. Additionally, P2S provided building Commissioning, LEED Administration and whole building Energy Modeling to ensure the building operated as designed and achieved LEED Silver certification.

To ensure reliability and ease of maintenance, rooftop packaged units were designed for the primary HVAC systems for the building. The gymnasium is equipped with multiple units working together to provide redundancy and flexibility of use to the City for indoor sports and as a supplemental events space. All of the building’s HVAC systems are interconnected by a building automation system (BAS) to ensure reliable operation and give the City easy visibility into the building’s systems. Specialty lighting was designed for the multipurpose room to enhance the visual appeal of the wood panel ceiling, and all lighting systems were networked together into an overall lighting control system.

City of Indio

City of Indio, Public Safety Campus, New Police Station, Fire Station, and EMS Dispatch Center

Location: Indio, CA Project

Overview: The project consisted of the new construction of three (3) separate buildings totaling approximately 43,377 sq.ft designed for essential services: a single-story EMS Dispatch Center (7,336 sq.ft), a single-story Fire Station (13,344 sq.ft), and a partial two-story Police Station (22,596 sq.ft). Each building was required to be serviced by a dedicated emergency diesel generator with backup fuel to support 72 hours of runtime. The exterior site scope included providing new site lighting, including PV canopy lighting, code-required Electrical Vehicle (EV) charging stations for new parking spaces, and infrastructure for automated vehicular gates with fire department-approved Knox Box for emergency personnel vehicles and access control infrastructure per the City IT Department.

Solution: P2S provided mechanical, electrical, and plumbing engineering services for the project with an overall objective of designing systems that meet the owner’s needs and accommodate changes in the facilities, including redundancy and future expansion.

Some of the specific features included HVAC systems with N+1 redundancy to serve Dispatch Room, Server Room, and 911 Radio Room, a building-wide UPS system with maintenance bypass in addition to a generator to backup critical loads and ensure reliable operation. Fire Station Apparatus Bay was designed to include a direct exhaust system using dedicated exhaust fume collection nozzles for each fire truck and compressed air system. A distributed sage glass control system was adopted to maximize daylighting, manage color rendering and glare based on occupancy and light levels, achieve energy savings, and provide human comfort without compromising security. An electromagnetic pulse bird deterrent system was installed on all buildings to prevent birds from landing and nesting on roof-top surfaces. All these features were designed to ensure Indio Public Safety Campus is able to reliably serve the local community by responding effectively to emergencies.

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