CS 2009 SSc4.3: Alternative Transportation—Low-Emitting and Fuel-Efficient Vehicles

  • CS_SSc4-3_Type1_LowEmittingVehicles Diagram
  • Promote use of high efficiency vehicles

    This credit is focused on limiting environmental impacts from automobile use. It targets commuting specifically, but also addresses company vehicle fleets, maintenance vehicles, and buses.

    Projects that have substantial parking area may find the requirements of this credit to be low-hanging fruit, because they should easily be able to designate preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. for low-emitting and...

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30 Comments

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Landry Watson DPR Construction
Jan 05 2012
Member

Partial spaces -- round up or round down

I have a calculation for preferred spaces that falls less than .5 of a space (7.35spaces = 5% of 147). In most land use or permit calculations there is specific language indicating that one can round down in these cases. Therefore, 7 spaces would be sufficient to achieve the amount. However, in LOL when I put 7 spaces into the template, the template indicates that I have not documented the amount of spaces required in order to comply. I don't find any language in the guidebook or credit language that indicates that the amount must be GREATER than 5% or... no less than 5% of total parking. Therefore, I'm thinking that rounding down on partial spaces would be allowed.

So how should we deal with partial parking spaces when calculating total required?

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Susan Walter Sr Project Architect, Wilmot/Sanz Jan 06 2012 Guest 1456 Thumbs Up

LEED rounds up because the requirement is for a minimum of 5% and they encourage project teams to do more than that.

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Landry Watson DPR Construction Jan 06 2012 Member

Thanks. Would it not be wise to indicate so in the calculations of the guidelines? Unless I've erred, I don't see where the guidelines or calculations clearly indicate to round up. Thanks again.

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Tristan Roberts Editorial Director – LEEDuser, BuildingGreen, Inc. Jan 18 2012 Moderator

Landry, it would make sense for USGBC to indicate this, but they haven't done so. It's a tip we pass around on forums like this one.

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Sarah Corbitt Assoc AIA, LEED AP BuildSense
Dec 09 2011
Member
61 Thumbs Up

Refueling Station As a Separate Project

Hi, there. The project I'm submitting does not have parking within the project boundary. It's a Core and Shell renovation on a tight urban lot. As part of a separate project, my firm is developing a natural gas refueling station on the lot beside this project (no building, just this station). The two lots are separated by a city street, and the project timelines are not concurrent. The refueling station will be complete within 6 months of the building opening. Is it possible to pursue an alternative compliance path for this credit? The city does not require parking here, because this is a dense, downtown zone.

Sarah Corbitt

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Tristan Roberts Editorial Director – LEEDuser, BuildingGreen, Inc. Dec 19 2011 Moderator

Sarah, are you asking whether the refueling station can help you earn SSc4.3 on the renovation project?

It sounds like they are fundamentally different projects—what do they have in common, other than your firm's involvement? As such, I don't see them being combined.

If there is a way you could combine them, I think you'd have to wait on the renovation LEED submission for the refueling station to be substantially complete.

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Julie Hendricks Director of EcoServices Kirksey
Sep 29 2011
Member
199 Thumbs Up

Combine Option 1 and Option 2?

Have any of you LEED experts out there ever done a combination of preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. spaces and alternative-fuel fueling stations? I just looked through every CIRCredit Interpretation Ruling. Used by design team members experiencing difficulties in the application of a LEED prerequisite or credit to a project. Typically, difficulties arise when specific issues are not directly addressed by LEED information/guide related to this credit (which was really fun, I assure you) and could find no precedent for this. Our tentative plan for this project is to provide 5% of spaces total, of which approximately 25% would be alternative fuel stations and 75% preferred parking.

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Tristan Roberts Editorial Director – LEEDuser, BuildingGreen, Inc. Nov 21 2011 Moderator

Julie, your approach makes sense to me, although I have heard of trouble on other credits where combining options was not explicitly allowed. Have you gotten approval of this yet?

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Ryan Gaylord Director, CTG Energetics, Inc. Nov 21 2011 Guest Expert 206 Thumbs Up

Hi Julie, I'm am also not aware of precedent for this particular approach. If you haven't already done so, you might file a LEED Interpretation request to confirm whether or not this approach will be accepted. The approach you described above seems reasonable to me, but you might feel more confident having an official verdict from GBCI.

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Jiri Dobias
Jun 29 2011
Member
67 Thumbs Up

Automatic Parking System

Is it possible to achieve this credit by choosing the first option (preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system.) and using an automatic parking system. This system is designed for 24 cars therefore I need to offer 2 preferred parkig spaces however the car owner cannot choose where his car will be.
Thank you for any suggestions.

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David Posada Sustainability Manager, GBD Architects Jun 29 2011 Guest Expert 4563 Thumbs Up

The automatic parking systems we've used don't provide any "preferred" location - since the cars get moved around they don't give the driver of those two preferred spaces a shorter walk or quicker access. If that's true for your system, you could use the discounted parking part of Option 1. There needs to be some real benefit for the drivers of the fuel-efficient vehiclesFuel-efficient vehicles have achieved a minimum green score of 40 according to the annual vehicle-rating guide of the American Council for an Energy Efficient Economy. - usually more convenient access or lower cost.

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Markus Henning M.Eng Facility Management Alpha Energy & Environment
May 27 2011
Guest
14 Thumbs Up

Preferred Parking special parking lots

In our new project we provide 65 parking lots. To achieve the credit requirements we must provide 4 parking lots for low emitting vehicles. We provide 3 special parking lots for SMART cars. My question is can we count these SMART parking lots if we label them as low emitting parking space? The SMART parking space is not directly to the staircase but only 6 parking lots away.

The credit requirements say 5% of the total parking lots must be provide to achieve the credit requirements for preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system.. My question is must we include the number of motorbike parking lots for the calculation?

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Ryan Gaylord Director, CTG Energetics, Inc. Jun 06 2011 Guest Expert 206 Thumbs Up

These are two good questions. To address the first, the intent of this credit is to encourage the use of low-emitting vehiclesLow-emitting vehicles are classified as zero-emission vehicles (ZEVs) by the California Air Resources Board. by all employees and visitors of the building. Without knowing any details about the SMART car program, it sounds like the use of these spaces might be limited to a certain group of users or a certain vehicle type. In general, these spaces must be made available to any drivers of qualified low-emitting vehicles in order to meet the credit intent.

To answer the second question, the credit requirements use the word "vehicles" instead of "cars," therefore one might interpret this to include motorbikes. Since motorbike parking takes up space in the parking lot that could otherwise be used for cars, the conservative approach would suggest that they should be included in the total parking count. Unfortunately, I am not aware of any precedent on this.

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David Dominguez Architect, LEED-AP
Apr 13 2011
Member
687 Thumbs Up

Preferred parking outside the LEED boundary

Our project's parking goes beyond the LEED boundary, since it is a mixed used building with several towers and only one of them will apply for LEED certification. We need to locate the preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. outside the LEED boundary due to space issues. Will do this still comply with the credit requirements?

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David Posada Sustainability Manager, GBD Architects Apr 14 2011 Guest Expert 4563 Thumbs Up

It depends - if you are providing preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. by offering a discount on parking fees than it should be okay, but if not, then the spaces have to be the closest spaces to the main building entrance for these people. (The only spaces that can be closer to the entrance are ones reserved for disabled users.)

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David Dominguez Architect, LEED-AP Apr 14 2011 Member 687 Thumbs Up

David, the project will implement preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. spaces for low-eLow-E or Low-Emissivity Coating: Very thin metallic coating on glass or plastic window glazing that reduces heat loss and heat gain through the window; the coating emits less radiant energy (heat radiation), which makes it, in effect, reflective to that heat. In that way it boosts a window's R-value and reduces its U-factor. and fuel efficient vehicles, and, according to the MPR supplemental guidance page 14, "facilities (including parking) outside the leed project boundary used for compliance with specific credits: facilities that are not within the leed project boundary but are used to demostrate compliance with a credit or prerequisite, as allowed per the rating system and reference guide, need not be considered for other prerequisite, credit, or mpr compliance. However those facilities cannot be used to show compliance for other leed projects"

In this case, I am assuming that providing the preferred parking for low-e and fuel efficient vehicles (will obviously have to be close to a building entryway) but outside the LEED boundary, will be sufficient to comply with the credit's requirements.

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David Posada Sustainability Manager, GBD Architects Apr 14 2011 Guest Expert 4563 Thumbs Up

I understand your situation a bit better now - if all the parking is outside the LEED boundary, but the preferred stalls are still closest to the entry, I think you would be fine.

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Rachel Nicely
Apr 07 2011
Member
18 Thumbs Up

Electric Charging Vehicles

I have a client that would like to install charging stations for SS 4.3 Option 2 compliance. How do you demonstrate vehicle fueling capacity per station when each electric vehicle charges at a different rate?

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David Posada Sustainability Manager, GBD Architects Apr 14 2011 Guest Expert 4563 Thumbs Up

Not sure if I understand your question - the credit requirements are only looking at "capacity" as the number of parking spaces, and providing 3% of that number of spaces as ones reserved for fueling or charging alternative fuel vehicles. We don't need to provide info about the rate or capacity of power being provided - except that actual charging equipment does need to be installed (not just 120 V outlets) Does that answer your question?

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Alicja Florczak Skanska Dec 05 2011 Member 80 Thumbs Up

In LEED v3 the reference guide sais "prepare information about the number of fueling stations provided, the alternative fuel station type, manufacturer, model number, and the fueling capacity per station" (documentation guidance).
In LEED CS v2.0 it sais even more: "confirm the fuel type, number of stations, and fueling capacity for each station for an 8-hour period".
So I guess we need to specify the power of charging equipment. As far as I am concerned, different electric vehicles need different plugs and voltage...
Any idea how detailed the specification needs to be?
Thanks!

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Lauren Wallace Certifications Department Manager, Epsten Group, Inc. Jan 06 2012 Guest 6 Thumbs Up

Hi, Alicja!

If you install 240 volt charging stations, then the assumption is that you are offering what is considered a "rapid charge," and that an electric car could fully charge in at least 8 hours. As far as documentation goes, you would need to show the number and location of the refueling/recharging stations, as well as the specifications for the type of station being provided (with the intent of proving that you are providing at least 240 volt outlets). Hope that helps!

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Michelle Cottrell President Design Management Services
Jun 23 2010
Member
101 Thumbs Up

Preferred Parking strategies

If there is above ground parking available for all building occupants and below grade parking with limited access available, is the restricted garage required to have preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. stalls if the above ground, surface parking lot includes all of the preferred parking spaces closest to the building?

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Tristan Roberts Editorial Director – LEEDuser, BuildingGreen, Inc. Jun 24 2010 Moderator

Preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. refers to desirable parking spaces near the building entrance. If those are located in the aboveground lot, then I would say that the garage does not need to (perhaps even should not) contain preferred parking.

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Michelle Cottrell President, Design Management Services Jun 25 2010 Member 101 Thumbs Up

I tend to agree - the MAIN building entrances are better served with the preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. as opposed to a limited access garage at the bottom of the structure. I will keep you posted! Thank you!

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Michelle Cottrell President, Design Management Services Aug 31 2010 Member 101 Thumbs Up

Tristan- As promised I wanted to keep you posted of this challenge.

We ended up submitted a CIRCredit Interpretation Ruling. Used by design team members experiencing difficulties in the application of a LEED prerequisite or credit to a project. Typically, difficulties arise when specific issues are not directly addressed by LEED information/guide proposing the preferred parkingPreferred parking, available to particular users, includes designated spaces close to the building (aside from designated handicapped spots), designated covered spaces, discounted parking passes, and guaranteed passes in a lottery system. for the garage should be calculated as a percentage of parking. For example, for the CS project 5% of total parking is required to be reserved for LEFE vehicles. In the CIR, we proposed 5% of garage and 5% of surface lot to be reserved for these vehicles. This strategy was approved :)

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John Albrecht Senior Sustainability Specialist, Sieben Energy Assoc Jan 27 2011 Member 778 Thumbs Up

I can't find a requirement for signage on a post or on the building so striping seems ok. Is that correct?

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Susann Geithner Director of Sustainability, HSB Architects & Engineers Feb 08 2011 Guest Expert 2221 Thumbs Up

We submitted this credit for review about 6 months ago and have been asked to submit photos of the signs for the final review. I would definitely do the signs, not just the striping.

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Julie Hendricks Director of EcoServices, Kirksey Sep 29 2011 Member 199 Thumbs Up

Just a note, we have a achieved this credit with striped spaces only (no sign) for a number of Core & Shell (and NC) projects. Offhand, I would say we've submitted this at least 10 times and been approved.

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Chris Munn Director, National Operations Chelsea Group, Ltd.
Jun 03 2010
Member
520 Thumbs Up

Preferred Parking

In addition to the handicapped parking, can loading and 30-minute parking be located closer to the entrance than the LE/FE vehicles? I haven't seen any clarification of this in the reference guide, but it would make sense that these spaces should also have priority over LE/FE vehicles.

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Rick Ferrara AIA, LEED BD+C, Gensler Jun 04 2010 Guest 430 Thumbs Up

Chris,
The issues is parking...(not other types of uses where a car is in a space). Loading is a different activity, and is not parking. The LE/LF vehicles should be the most favored positions after accessible parking, and excluding uses such as drop off, loading and other non-parking activities.

Also, we have been successful in dividing LE/LF parking between customer doors and empolyee entrances, so you could divide them into two groups based on the ratio of customer (or visitor) to emplyee parking.

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