Can we use the default (highest values) for older lamps that do not have Mercury Content listed per bulb? For instance, if the company no longer supplies the model/make of a T8, can we assume the typical highest value for Mercury content? It is TCLP compliant, but the leed online form states that TCLP compliance is insufficient information. Similarly, what if there is no lamp life (hours) available? We have contacted the manufacturer but are having trouble digging up data from the 1990s. Thanks.
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Dan Ackerstein
PrincipalAckerstein Sustainability, LLC
LEEDuser Expert
819 thumbs up
August 5, 2010 - 11:24 pm
John - If the lamps are no longer supplied, then you can no longer purchase them, therefore - problem solved! Remember that your mercury calculation is based on the purchasing plan, not the mercury content of your current bulbs. The presence of old lamps with unknown mercury content in the building is really not relevant - the question is, when one of those lamps burns out, what lamp will you replace it with - and what is the mercury content/lumens/life of that replacement. This credit is entirely focused on future purchases, so map out your purchasing/replacement plan to ensure a 90 picogram/lumen-hour weighted average when full replacement is complete and, as always, don't toss out perfectly good bulbs until the end of their useful lives. . .