The building seeking LEED certification is a downtown, high-rise building without feasible street parking. The building has an attached parking structure. Any building employee driving a car would park in the parking structure. Employees use electronic cards (with identifying information including name and kind of car) to enter and exit the parking structure. Daily parking activity is monitored. May I use parking structure data rather than a survey (I would assume that any building occupant who didn't park in the parking structure arrived by an alternative mode)? Thanks for your time.
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Dan Ackerstein
PrincipalAckerstein Sustainability, LLC
LEEDuser Expert
819 thumbs up
March 28, 2011 - 10:12 pm
I'm not sold on it Dawn. I think you'd probably get a decent number, but any time a blanket assumption is made, you're taking a big risk. I can immediately imagine a few situations probable in your instance that would undermine this approach - 1. occupants arriving by taxi or even limo (which can be a chunk in downtown areas depending on your occupancy), 2. occupants dropped off by a carpool (although that is alternative, it isnt the same as riding a bike from a mathematical standpoint), or 3. occupants who are parking in a nearby parking garage and walking from there to your building. I think #3 is obviously the most problematic of those mentioned, but that list isn't by any means conclusive. I don't want to give the impression that this approach is definitely off-limits, but it sounds risky to me.
Hope that helps
Dan