Adding ductwork to meet credit requirements can add costs; incorporate space-planning strategies to minimize this issue. 

Develop an outline of all the IEQc5 requirements that apply to your project, and confirm that the schematic design accommodates each one. 

Hazardous storage containers should be located in a secure area outdoors and away from air intakes. 

Design in containment drains in spaces where mixing of hazardous chemicals occurs, like labs or maintenance areas.

Provide adequate space for storage and containment of hazardous liquids. 

When planning for space allocation to meet credit requirements, consider strategies like merging exhaust systems into a single, main, designated exhaust, or stacking chemical use areas over each other on different floors to minimize ductwork. 

Strategies for space planning may include:

Stack common-use areas so that all janitors’ closets are located in the same place on each floor, then run a single exhaust duct vertically through the building for each exhaust fan to tie into.    
Add height to the deck-to-deck elevation to provide extra space above finished ceilings for ductwork.
Locate rooms identified as containing hazardous material adjacent to outside walls to reduce the need for more ductwork.

Design in space for additional ductwork that might be needed to provide designated exhaust for all garages, high-volume copy rooms, janitors’ closets, science labs, workshops, art rooms, or any other spaces that may be used for mixing and storage of chemicals or hazardous materials. You need to design the exhaust system so that each space with hazardous material has negative pressure in respect to adjacent spaces. For each of these spaces, be sure to include self-closing doors, and deck-to-deck partitions or hard-lid ceilings. 

Entryway systems should be climate-specific. For example, regions with high rainfall may choose high void-volume mats—for trapping dirt below the mat surface and fast drying. In regions where mud and snow are a greater source of contaminants, open-loop entry mats may be more appropriate. 

While roll-off mats are acceptable, additional documentation (service contracts and schedules) is required to confirm that the mats will be cleaned on a weekly basis. They cost more up-front, but permanent entryway systems provide better performance, require less maintenance, and are easier to document for LEED compliance.