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FAQs about MRc4 :

There are no mercury-containing lamps installed in the project building. Can we upload a signed statement from our property manager instead of completing the credit form and documentation?

A large multi-tenant project does not have a uniform lighting standard, therefore there are a number of different types of lamps are installed on the project. How should we go about documenting this credit?

Do we need to provide a purchasing plan if the lamp inventory of currently installed lamps shows that the average mercury content is already below 90 picograms per lumen-hour?

Do lamps for task lighting need to be included in the purchasing plan?

Do mercury-free lamps need to be included in Table MRc4-1 Lamp Purchasing Plan and Table MRc4-2 Performance Period Lamp Purchasing?

All of the outdoor fixtures in the project building are mercury-free. Can we exclude all outdoor fixtures from the purchasing plan?

The project building is a large multi-tenant building and tenants are responsible for their own lamp purchases. Can lamps in tenant spaces be excluded?

How do you know if a lamp meets the NEMA guidelines, and can therefore be excluded?

The project building includes a significant amount of process lighting (i.e. sports arena lighting or studio lighting). Do these lamps need to be included?

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Forum discussion

EBOM-2009 MRc4:Sustainable Purchasing—Reduced Mercury in Lamps

Multifamily residence (LEEDv2)

Profile picture for user vavedano
Saju Varghese
SUSTAINABILITY COORDINATOR
JALRW Eng. Group Inc.
LEEDuser Basic Member
24 thumbs up

I'm wondering if the lighting fixtures in each particular residence have to be accounted in this calculation. Not really sure since the residents own their place, they are not under a leasing program or anything, and only corridors and common areas are under management's control.

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Bill Swanson
Sr. Electrical Engineer
Integrated Design Solutions
LEEDuser Expert
516 thumbs up

Fri, 09/27/2013 - 12:55

The reference guide says, "For buildings occupied by multiple tenants, tenant purchasing data should be aggregated to ensure that compliance is evaluated for the entire project building, If individual tenants do not provide purchasing data, tenant purchasing must be estimated by the project team and assumed to be 0% compliant with sustanability critereia. Estimated data for nonparticipating tenants should be integrated with the purchasing data provided by cooperating tenants to generatre building-wide purchasing values. The estimate of purchases made by tenants that do not provide data may be extrapolated from purchasing rates elsewhere in the buildings on a per square foot or per occupant basis, ... The calculation must be defensible, robust, and appropriate,..." If all of the residential tenants have screw-based integral CFLs then they are exempt.

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