Log in
LEED v4
Healthcare
Materials and Resources
PBT source reduction - mercury

LEED CREDIT

Healthcare-v4 MRc5: PBT source reduction - mercury 1 point

LEEDuser’s viewpoint

Frank advice from LEED experts

LEED is changing all the time, and every project is unique. Even seasoned professionals can miss a critical detail and lose a credit or even a prerequisite at the last minute. Our expert advice guides our LEEDuser Premium members and saves you valuable time.

Credit language

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To reduce the release of Persistent Bioaccumulative and Toxic (PBTs) chemicals associated with the life cycle of building materials.

Requirements

Specify and install fluorescent lamps with both low mercury content (MR Prerequisite PBT Source Reduction—Mercury) and long lamp life, as listed in Table 1.

Table 1. criteria for rate life of low-mercury lamps

Lamp Maximum content Lamp Life (hrs)
T-8 fluorescent, eight-foot 10 mg mercury standard output - 24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts)
high output - 18,000 rated hours on instant start ballasts or program start ballasts (3-hour starts)
T-8 fluorescent, four-foot 3.5 mg mercury both standard and high output 30,000 rated hours on instant start ballasts, or 36,000 rated hours on program start ballasts (3 hour starts)
T-8 fluorescent- two foot and three foot 3.5 mg mercury 24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts)
T-8 fluorescent, U-bent 6 mg mercury 18,000 rated hours on instant start ballasts, or 24,000 rated hours on program start ballasts (3-hour starts)
T-5 fluorescent, linear 2.5 mg mercury both standard and high output - 25,000 rated hours on program start ballasts
Compact fluorescent, nonintegral ballast 3.5 mg mercury 12,000 rated hours
Compact fluorescent, integral ballast 3.5 mg mercury, ENERGY STAR qualified Bare bulb - 10,000 rated hours
covered models such as globes, reflectors, A-19s - 8,000 rated hours
     
High-pressure sodium, up to 400 watts 10 mg mercury Use noncycling type or replace with LED lamps or induction lamps
High-pressure sodium, above 400 watts 32 mg mercury Use noncycling type or replace with LED lamps or induction lamps

Do not specify or install circular fluorescent lamps or probe start metal halide lamps.

See all forum discussions about this credit »

What does it cost?

Cost estimates for this credit

On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.

Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.

This information is also available in a full PDF download in The Cost of LEED v4 report.

Learn more about The Cost of LEED v4 »

Frequently asked questions

Do LED lamps qualify automatically for this credit, regardless of rated lifetime?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

See all forum discussions about this credit »

Documentation toolkit

The motherlode of cheat sheets

LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.

Get the inside scoop

Our editors have written a detailed analysis of nearly every LEED credit, and LEEDuser premium members get full access. We’ll tell you whether the credit is easy to accomplish or better left alone, and we provide insider tips on how to document it successfully.

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To reduce the release of Persistent Bioaccumulative and Toxic (PBTs) chemicals associated with the life cycle of building materials.

Requirements

Specify and install fluorescent lamps with both low mercury content (MR Prerequisite PBT Source Reduction—Mercury) and long lamp life, as listed in Table 1.

Table 1. criteria for rate life of low-mercury lamps

Lamp Maximum content Lamp Life (hrs)
T-8 fluorescent, eight-foot 10 mg mercury standard output - 24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts)
high output - 18,000 rated hours on instant start ballasts or program start ballasts (3-hour starts)
T-8 fluorescent, four-foot 3.5 mg mercury both standard and high output 30,000 rated hours on instant start ballasts, or 36,000 rated hours on program start ballasts (3 hour starts)
T-8 fluorescent- two foot and three foot 3.5 mg mercury 24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts)
T-8 fluorescent, U-bent 6 mg mercury 18,000 rated hours on instant start ballasts, or 24,000 rated hours on program start ballasts (3-hour starts)
T-5 fluorescent, linear 2.5 mg mercury both standard and high output - 25,000 rated hours on program start ballasts
Compact fluorescent, nonintegral ballast 3.5 mg mercury 12,000 rated hours
Compact fluorescent, integral ballast 3.5 mg mercury, ENERGY STAR qualified Bare bulb - 10,000 rated hours
covered models such as globes, reflectors, A-19s - 8,000 rated hours
     
High-pressure sodium, up to 400 watts 10 mg mercury Use noncycling type or replace with LED lamps or induction lamps
High-pressure sodium, above 400 watts 32 mg mercury Use noncycling type or replace with LED lamps or induction lamps

Do not specify or install circular fluorescent lamps or probe start metal halide lamps.

Do LED lamps qualify automatically for this credit, regardless of rated lifetime?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

See all LEEDuser forum discussions about this credit » Subscribe to new discussions about Healthcare-v4 MRc5