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Reduce conventional commuting
This credit requires you to document your building occupants’ commuting habits and reduce the number of conventional commuting trips made to your building. There are a lot of points at stake, so it’s worth taking a close look at the credit and assessing your building.
In order to earn the credit, you must be able to document that your building’s occupants make at least 10% fewer conventional commuting trips than the LEED baseline. The baseline assumes that all occupants drive alone in a conventional vehicle to and from the building each day of the week.
If your building already meets the 10% credit threshold, you are not required to make further improvements—but if you do so, you can earn more points (a lot more). For example, if your initial commuting assessment shows...
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143 Comments
Handing out surveys to tenants
Does anyone have any suggestions as to the most effective way to distribute surveys to approximately 1000 office building tenants. There is one main lobby/elevator bank by the entrance. Alternatively, I could perhaps stop by each tenant space and hand out a few dozen to distribute.
Also, what's a good method of collecting the survey results?
Thanks
It is probably a whole lot easier to create a survey online and give the link to tenants, than to pass out paper ones. You did not mention the type of building tenants, is it 1000 separate individuals? Or are there point people who could help you distribute the survey, to say, the 10 companies in the building (each with 100 employees)?
Thanks for the response.
I was under the impression that i can't really do an online survey (with occupant emails) because i need to keep the results anonymous. Is there a way of doing so online anonymously? Also, i'm doubtful that i can get email addresses for most of the workers.
The building has about 50 tenants, each with about 20-25 workers
You can still distribute an online survey via email, as long as you don't collect any information that can connect a response to a specific individual. Many online survey tools give you the option to select the information that will be returned to you in a final report. If you're having trouble collecting email addresses, send the link to your online survey to your tenant rep for each of the 50 tenants in your building, explain to them what you're trying to do, and ask them to forward the survey to each of their co-workers. They will not be responsible for collecting the survey data, so it is minimal effort on their part, but you may need to explain a little bit about the LEED process and the importance of gathering this information.
For tips on online surveys and other methods, including in-person lobby surveys, you may also want to take a look at the tip sheet at http://www.leeduser.com/strategy/doing-alternative-commuting-transportat....
Tzvi,
I did not mean that the survey would be in the email, I meant the survey would be online and you would send a link in the email. Sorry for the confusion. Jason sums up the rest of the process nicely.
Also, there are many (free) online survey creation websites. A quick google search returned survey monkey and kwik surveys.
Good Luck!
Alternative Transportation Survey Results Calculator - Error
I am trying to fill out the LEED user EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems. SSc4 Alternative Tran Results Calculator and I keep getting the same error message. No matter what data I enter into Step: 1, I receive the following message "The number of FTEFull-time equivalent (FTE) represents a regular building occupant who spends 8 hours a day (40 hours a week) in the project building. Part-time or overtime occupants have FTE values based on their hours per day divided by 8 (or hours per week divided by 40). Transient Occupants can be reported as either daily totals or as part of the FTE. Residential occupancy should be estimated based on the number and size of units. Core and Shell projects should refer to the default occupancy table in the Reference Guide appendix. All occupant assumptions must be consistent across all credits in all categories. occupants who received the survey is greater than the total number of FTE occupants in the building." I am using Excel 2010 and have received the message in and out of compatibility mode. Anyone else having this error or have any advice?
Thanks.
Tyler,
I am getting the same error, LEEDuser will investigate.
I had a similar issue about a year ago and I think it is a problem with an Excel default setting rather than with the USGBC calculator. I'm running Windows 7 now, so I'm not exactly sure of the specific steps you should take on your operating system, but essentially you need to go to the Options section in Excel and under "Formulas", make sure that "Workbook Calculation" is set to "Automatic". Hopefully this helps.
Hi Tyler,
Have you tried entering values in the subsequent cells? When I work though the spreadsheet I’m able to trigger that error message, but it’s because an acceptable value needs to be entered in cell C15 for the “total number of regular building occupants who received the survey”. This value needs to match the output in the grey cell C14, which differs based on whether Approach 1 or 2 is selected.
Hi Jason,
Thanks for the suggestion. I confirmed that my Workbook Calculation is set to Automatic and I still receive the error message. Also, I tried the other settings (Auto Except for Data Tables and Manual) and they did not resolve the error message either. I will look at some excel forums to see if I can find a solution.
Thanks.
Hi Trista,
Thanks for the response. I have tried entering values in the subsequent cells. Cell C15 is actually where I am getting the error message. I have tried entering values that are equivalent, lower, and higher than the minimum required values of C14 and C12, but I always get the same error message ("The number of FTEFull-time equivalent (FTE) represents a regular building occupant who spends 8 hours a day (40 hours a week) in the project building. Part-time or overtime occupants have FTE values based on their hours per day divided by 8 (or hours per week divided by 40). Transient Occupants can be reported as either daily totals or as part of the FTE. Residential occupancy should be estimated based on the number and size of units. Core and Shell projects should refer to the default occupancy table in the Reference Guide appendix. All occupant assumptions must be consistent across all credits in all categories. occupants who received the survey is greater than the total number of FTE occupants in the building").
Thanks for looking into this and for the help.
That's very curious. Have you tried downloading a fresh file? When I was testing the spreadsheet I noticed that sometimes I'd update a cell to an acceptable value, but the formula wouldn't reset correctly and the error message would stick around. Using a brand-new file that didn’t have any errors triggered already then fixed the issue. I apologize if you’ve already tried this workaround as well.
I have also had problems with spreadsheet -- downloading a new worksheet and changing settings in excel didn't seem to help.
But for a temporary work around, I found that if I entered the values for the cells that were generating the errors messages into a separate worksheet and the cut and pasted the numbers into the appropriate cells it seems to work and I was able to complete the rest of the spreadsheet.
Thanks Peggy. Your suggested 'temporary work around' worked! Thanks to everyone for your help on this issue. Much appreciated.
Hi everbody,
just get the calculator from the credit ressources at LEEDonline adressing SSc4. It's the same but without an error.
OPTION 3 - Survey Time
We have same dubs about survey time. The LEED EB: O&M 2009 Reference guide inform that the survey must be conduct either (1) each day over 5 consecutive workdays or (2) at the conclusion of 5 consecutive days. Our dubs is:
All tenants must be surveyed in same day? Or can we conduct the survey for a few days, until a significant portion of the population being surveyed?
Wagner, the idea behind the timing is that you are asking occupants about their commuting practices over five days. You can get this information by surveying them every day for five days, or once at the end of five days.
Combining SSc4 and IEQc2.1 Surveys
I have seen suggestions to combining surveys for Alternative Commuting Transportation (SSc4) and Occupancy comfort survey (IEQ 2.1). However, under the SCAQMB Rule 2202, the responses to the Alternative Community Transportation Survey must be "available and traceable to an individual employee" while the occupancy comfort survey must be anonymous, according to the LEED reference guide. Any suggestions how to get around these conflicting requirements, other than doing two separate surveys?
The SCAQMD requirement for traceability does not extend to EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems., Dominick. As I understand it, SCAQMD maintains that requirement to preserve the ability to verify the validity of a survey and responses - EBOM uses somewhat different methods to help GBCI feel confident that the survey is legitimate. So you can combine your transportation and occupant comfort surveys and maintain anonymity as per comfort survey requirements.
Hope that helps,
Dan
Public Transportation Park and Rides
Many tenants in our building use public transportation park and rides. They drive to a specific location, park their car and get on public transit for the rest of their commute. Its does not appear that SCAQMD provides direction on how to deal with this. Is it safe to assume that park and rides should be counted the same way carpools/vanpools are? On page 7 of Rule 2202 is states that you can count a carpool/vanpool if it was used for the majority (51%) of the total trip distance. Can the same be done for a park & ride situation? If tenants take the majority of their trip on public transportation, can I just cound that? As an alternative, I would have to define the pecentage of trip taken by public transportation and the other form of transportation (which could be via carpool or bike...) and appropriate the trip accordingly.
Thanks.
Wendy - My sense is that this is a situation where a perfect survey and a 'good enough' survey might differ. As you've noted, defining the % of the trip undertaken in each form of transportation and weighting each occupant accordingly (someone who drives 25% of the way then rides the bus 75% of the way would count as a .75 RCCT) would be the most accurate method. However, a survey detailed and thorough enough to glean that information might also be lengthy enough so as to depress your response rate significantly. On the other hand, I have seen surveys that count individuals who use public transport for any portion of their commute as alternative transport users, which seems misleading as well. I think your proposal - if the majority of an occupants commute (by mileage) is via alternative means, count them as an alt transport user - is probably the most sensible balance between the two.
Hope that helps,
Dan
Desperate for SSc4 Points in NYC
My team is currently working on a handful of LEED-EB projects in New York City (mid-town Manhattan). In the past we have done surveys, however we have a really hard time getting responses from this demographic. Typically we’re seeing between a 20-40% response rate. It’s heartbreaking to see these projects only get 5-9 points for SSc4 when we all know that the vast majority of workers in Manhattan use alternative transportation. These projects really deserve the full 15 points! They are older buildings, struggling for points and alternative transportation is one of their “greenest” claims-to-fame. The intent of this credit is to reduce pollution from automobiles, and in the USA no one does it better than Manhattan when it comes to reducing automobile-dependency. Does anyone have any alternative compliance ideas for Manhattan buildings that sidestep the survey approach?
My preliminary research shows that the NY Metropolitan Transportation Council collects and presents transportation information using census data (in 2008 only 11.1% drove alone). You can view data at http://www.nymtc.org/webquery/census/main.cfm as “travel mode – by place of workplace”. But the data is from 2008 at the latest, and of course this isn’t a formal “program”. Are there programs in Manhattan that meet LEED requirements, will get us a more deserving number of points, and open for membership? Are there any other ideas out there? Any help is appreciated! Thank you
K-12 School
I am trying to figure out how to apply this credit to a public high school in a semi-rural location.
Obviously the baseline is not everyone driving by themselves in a car. The kids below driving age could not be included. So if I follow Option 3 I assume I would include all of the staff and the kids over drving age in the survey? The over 16 year old kids with driver's licenses who arrive by bus would count toward the qualifying percentage?
Any guidance on how to apply this credit to a public high school would be appreciated.
Boy, thats a tough one Marcus - sorting out the potential drivers vs. non-drivers makes some sense, I agree. Even that sort isn't entirely clean because an argument could be made for excluding students entirely or for counting all students (I am imagining that many students are dropped off at school rather than ride the bus, which is a significant commute impact). I would almost be tempted to survey all three major populations (staff, 16+ students, under 16 students) and let GBCI tell you what the right mix is. But I think in the absence of specific guidance on how to treat this group, GBCI has to give some flexibility to applicants to use their best judgement. Sorry I don't have more definitive thoughts.
Dan
EBOM Recertificaton - one time assessments
According to the TEMPORARY GUIDANCE FOR RECERTIFICATION UNDER LEED for EXISTING BUILDINGS: OPERATIONS & MAINTENANCE published by GBCI on 10/05/2010 at point C) it is stated that: "One-time assessments required for certain credits (occupant survey, transportation survey, outdoor air measurements, waste audit, etc.) do not have to be conducted again if they occurred within 24 months before end of the recertification performance period".
Can you confirm this applies to the following credits? Any other?
- SSc4 Occupant Commute Survey
- WEp1 (measuring actual flow rate)
- EAp1 ASHRAE Level I Energy Audit
- EAc2.1 ASHRAE Level II Energy Audit
- MRc6 Waste Stream Audit
- IEQc2.1 Occupant Comfort Survey
- IEQc2.3 Thermal Comfort Monitoring
- IEQc3.2 Custodial Effectiveness Assessment
Thanks!
I can't formally confirm any of the above, but I certainly think it is a lock for SSc4. The recert guidance simply carries over the idea of a 2-year maximum performance period to recertification - that logic would seem to extend to most of the credits you've listed (although I'm not sure its true for WEp1 or EQc2.3.)
Dan
Thanks for your help.
Mauro
SSc4 EBOM v2.2
Our project is 750,000 sf office with 1277 occupants. Project is located in Miami and has it's own parking garage. Can we use garage swipe card documentation in place of a survey to determine number of commuters? Don't know if this is acceptable to USGBC. Would the morning timeframe still be the same as for the survey or would every daily one time inbound swipe be counted?
Stephen, can you say more about the methodology? It seems like it might work as one data point, but how does it tell you who carpooled, who walked, who biked, who took transit, and if they drove what kind of car?
It doesn't tell who carpooled so each car is assumed to have one occupant. All others who arrived at work would have walked, biked, or used mass transit. There is no real on-street parking and to park in another garage (if possible) would be costly.
Stephen, I think a reviewer would be troubled by the assumption that the cost of parking would be so prohibitive as to ensure that folks aren't doing it. Here in the BayA bay is a component of a standard, rectilinear building design. It is the open area defined by a building element such as columns or a window. Typically, there are multiple identical bays in succession. Area, parking in downtown SF is spectacularly, obscenely expensive and yet those garages seem to be plenty busy every day. The survey can be a hassle, but I think its your safest bet for getting the credit approved smoothly. I also imagine that if your survey result is very closely aligned with your garage swipe data, you'll have a stronger case to make for using that method in future re-certifications.
Hope that helps,
Dan
Dan,
If parking in that garage is free for a tenant with a parking card, why would they pay $20/day to park somewhere else?
The survey only touches a portion of the FTEFull-time equivalent (FTE) represents a regular building occupant who spends 8 hours a day (40 hours a week) in the project building. Part-time or overtime occupants have FTE values based on their hours per day divided by 8 (or hours per week divided by 40). Transient Occupants can be reported as either daily totals or as part of the FTE. Residential occupancy should be estimated based on the number and size of units. Core and Shell projects should refer to the default occupancy table in the Reference Guide appendix. All occupant assumptions must be consistent across all credits in all categories.. This method gives a count for all the FTE's as they must swipe their card to get in the garage. Since it doubles as a security card for bldg access afterhours, the swipe is a unique identifier for each FTE.
Fuel efficient car vs single occupancy and 2-person carpool
One commuter drove a Civic hybrid each day to work (10 trips under fuel-efficient car). Two of those days he carpooled (4 trips under 2 person carpool) and three of those days he rode by himself (6 trips under single occupancy). My total max theoretical trips is 250 but with the hybrid figured in, I have 260 data entries and am getting a warning message in the table. How do I count the hybrid car AND the carpooling?
Hello Andrea,
That's really a tough one! I suppose a person who carpooled in a LEFE vehicle should respond only that he used the LEFE vehicle, and not that he carpooled. Think about it: on each day in which they carpooled together, for those 2 people, zero conventional vehicles were used. Therefore, 4 conventional trips were avoided on that day, right? Equivalent to both declaring that they used low-emitting vehiclesLow-emitting vehicles are classified as zero-emission vehicles (ZEVs) by the California Air Resources Board..
But I'm not quite sure exactly what the SCAQMD methodology says about this one, though, so I'd wait for some more insights to be sure.
My thought was that much like some of the MR credits, two sustainable aspects are counted for each of their merits. If I have food that is both organic and local, I get credit for both. In the transportation credit, if I have carpooling and a fuel-efficient vehicle, it should count twice. Any thoughts?
Boy Andrea, you are my nominee for 'Question of the Year' at the LEEDUser awards. I've been turning this one over in my head and I'm really not sure what the right answer is. This is a really rare situation, and its hard for me to imagine that the outcome will drastically affect your numbers, but in a small building, it very well could. I think your argument about the organic and local analogy is a valid one; at the same time, I'm not sure its sensible to conceive that one persons exceptionally green commute could somehow compensate for someone else's conventional commute (effectively the case if your hybrid-poolers travel was counted as two non-CSOV commutes). I think ultimately, this is a call the GBCI will have to make - I would run your calculations both ways and submit both tables and a narrative that explains your conundrum and why the outcome matters. I suspect that ultimately GBCI will agree with your logic and the quasi-precedent set by MR, but its a toss-up. Let us know what happens!
Dan
Here's what the review team said.... Note that trips to the building in low emitting and fuel efficient vehicles can be accounted entirely as alternative
commutes, and the number of carpool passengers in the vehicle does not need to be counted.
Thoughts?
Are local SmartCommute Programs compliant with Option 2?
I see that the SmartCommute program is referenced as a way to provide incentive to building occupants to increase alternative commuting to work. Is SmartCommute considered to be compliant with the SCAQMD standards for Option 2?
Thanks!
John - As far as I know, GBCI hasn't 'pre-approved' any local or regional transportation programs as automatically compliant with Option 2. That being said, from what (little) I know of SmartCommute, it does look like the kind of program that Option 2 had in mind when it was written. It would be wise for you to submit information as to how SmartCommute and SCAQMD compare in terms of data collection methodology to help the reviewer feel confident in the integrity of the performance data collected, but I think that assuming there are no drastic differences, you can be pretty optimistic that the program will work. Hope that helps,
Dan
Option 1 or 2- participating in a local program
I have a project that currently participates in a local transportation organization. However, after looking through the manual and the extensive SCAQMD rule 2202, I'm still a bit unsure of what I specifcally need to ask for from this program to submit to LEED. And because I'm unsure myself, it's really difficult to know how and what to ask for from this transportation program.
Can anyone explain what information I'll need from this program to submit for LEED in a very simple way so that I'm able to communicate this as well.
EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems. doesn't do a great job of establishing the parameters for this, and there remains some uncertainty about how local/regional programs will be seen by reviewers, but fundamentally I think you are seeking to establish that the program methodology for data collection is reasonably equivalent to SCAQMD. That is, explain who you are reporting to and most importantly the details of how the data is collected and analyzed. Provide details as to how issues like sample size and survey bias are addressed, and illustrate the computations in such a way as to confirm that things like carpoolers are handled in a sensible fashion. My sense is that reviewers are generally deferential to local program methodologies, but with a caveat that a highly questionable survey, process, or calculation is not going to fly. Hope that helps,
Dan
Option 3, approach 2: Random selection
This building is over 300,000 sf and located close to public transportation. Half of the tenants are government agencies. The building manager stated if we send out electronic surveys we will probably not receive more than 20% back. Therefore we opted to set up stations in the lobbies next to both entrances where employees will be asked to fill out commuting surveys. Here are my questions:
1) LEED reference guide, page 27, states surveys should "identify the transportation mode used to travel to the project building between 6am and 10am". I'm a little confused because the new LEED survey calculator mentions "morning and evening" commutes. So which is it??
2) Since a majority of the occupants are government agencies employees often take off Friday or Monday. Therefore, the building management staff plan to conduct these surveys in the middle of the week for two consecutive days in order to document a true random sampling. The survey will ask occupants to fill out information based on the previous Mon-Fri work week, but will not conduct the surveys until the following week. Is this acceptable, as long as we explain this well in the narrative?
3) Lastly, does the survey need to document the mileage driven for "single occupant vehicles". the reason I ask relates to occupants who use multiple transportation modes. For instance, if someone drives to a commuter parking lot then hops a train, how do we document this on the survey? In order to receive credit, would the mileage driven have to be less than the train distance?
Thanks!
Stations in the lobbies are a great way to get responses - I have found that having interviewers asking questions is a way to expedite the information collection process and keep folks from having to take a full 'time-out' from hustling to get to their desks. Requires more people-power, but it can really increase response rates. To your questions:
1. The survey methodology assumes that people use the same means to get to/from work on a given day. In rare cases that may not be the case (cyclists taking the bus or a cab home on a rainy evening) but it's an assumption you can safely make.
2. Yes - given your situation, this seems perfectly sound.
3. Great question and EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems. doesn't specify a methodology here. In this instance, asking for mileages for each leg of the trip would be great (and one could then assign fractions of the commute to alternative and conventional means, much as is done with carpooling), or you could simplify the endeavor by counting multi-modal commuters as conventional. I think it depends how often you see this scenario arising, how you anticipate it will affect your performance numbers, and how it will affect response rate. Tough question - no easy answer there.
Hope that helps,
Dan
Dan - To follow up on gwenedd's question, if we choose to survey return or evening modes of transportation can we utilize that information?
Thanks!
Wendy
I don't see a reason why not Wendy - It's hard for me to imagine a situation where an alt transport user in the morning becomes a CSOV user in the evening or vice versa. There could be some modal changes within the alt transport group (I rode my bike to work but took the bus home because it was raining) but those changes are marginal enough so as to be largely inconsequential.
Dan
vehicles not listed on ACEEE database - non U.S. project
we have just completed our transport survey and seem to have a lot of 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., but most don't appear on the ACEEE list - simply because we tend to have models different from those sold in the US.
we have been contemplating approaching the vehicle manufacturers to provide us with equivalency scores for Green Score for vehicles sold here (South Africa), but this may not be the correct approach given that this may contain bias/not follow the prescribed methodology.
we really would like to explore this, especially since there are easily an additional two or three points at stake for our project, if we cannot prove/document fuel-efficient vehicles and would be very grateful for guidance!
many thanks!
Interesting question! I think the approach you are contemplating is probably the best route. Although you are correct in noting that the findings may slightly off the mark, I would think that most manufacturers would have publicly available (and reasonably reliable) information on fuel economy and curb weight, if not tailpipe emissions. My suggestion from a LEED standpoint would be to carefully quantify the portion of your overall transportation performance that is associated with vehicles of uncertain documentation so that, if push comes to shove, you can back those out of the figures for compliant commutes. That being said, it has been my experience that the USGBC/GBCI recognizes the inherent limitations of many of the tools it employs from the perspective of projects outside the US, and is quite receptive to those projects sincere and thoughtful efforts to achieve the best documentation standards they can achieve.
Hope that helps,
Dan
Using Parking Structure Data for Survey
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.
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
Narrative on Data Collection
Can anyone help with the text box asking for a description of the data collection methodology etc.? We are using option 3. The survey went out to everyone and we got 66% participation. We have lots of commuter options in place, but we discovered that they are not being well used. In addition to the survey language and response summary uploaded already, what are they looking for here? Just how we distributed and collected the survey (survey monkey?) any help is appreciated.
That is about right - the narrative should articulate the survey process, particularly the means (hard copy, interview, online), timing, anything you've done to deal with seasonality, response rates, etc... And its always good to discuss the insights you've gleaned as well. Basically, tell the story of the survey and show that you've carefully adhered to EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems. guidance, even if it feels like you're just repeating what is in the Ref Guide sometimes. It helps the reviewer connect the dots between things that might otherwise be unclear.
Hope that helps,
Dan
Alternative Transporation for an inn.
We have an inn that is seeking LEED certification. Our innkeeper lives in the building. Because we are in the center of a small town, we walk to the post office, bank and grocery store. We are also on an 11 mile bike path so we can ride a bike to the same destinations. We, the owners also work at the inn and the two of us carpool together in a hybrid Prius. What Option would you choose of the three and do you have any other recommendations? Also, 99% our guests all car pool because they practically always come as couples. We offer an incentive of 15% off the room rate if four or more commute to the inn together. We, the owners also live in the building 60% of the year. Our policy for shopping is to take one trip per week and do all the shopping along the way instead of multiple trips.
Nana, I think you've got a fine little Credit Interpretation Request on your hands. I think there's a reasonable argument for either including or excluding your guests (the latter seems clearly to be an option, but I'm not certain the former is), and there are a variety of ways one might wrestle with people who live AND work in the same place. For example, one might argue that the innkeeper (and the owners, at least during the 60% of the year they live on-site), doesn't have a commute at all, which is not necessarily the same as using alternative transportation to commute!
It's a real curveball - the 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 process is perfect for this.
Dan
Alternative Transportation
I think I might know this answer but I need some advice to confirm my hunch....The project I am working on is a 5,000sf university owned educational center located 30 min from an urban area. The only full time employee is the facility manager who arrives at 7:30. Three other employees, which includes the Director of the building, are regular occupants but only work at the center two days per week. Since it is an educational center, university students, K-12 students, and teachers frequent this building and make up more than 80% of the building's occupants.
That leaves me with four employees who would be eligible to be included in the survey correct?? I am still confused about whether or not I can claim those employees that work only two days a week as "regular occupants".
They are indeed 'regular occupants'. This becomes a bit simpler if you think about each employee in terms of commute trips. If I understand the situation, you have a Facility Manager working 5 days/week (therefore making 10 commute trips). You also have 3 employees who each work two days - 3 employees x 2 days x 2 commute trips per working day = an additional 12 trips. So your building has a baseline of 22 conventional commute trips per week from which you will determine your 'reduction'. Hope that helps.
Dan
Option 3, Approach 2 – selection of a random sample by elevators
We have a 6 story multi-tenant downtown office building located in close proximity to public transportation. The building also has 4 levels of underground parking, where you can enter the garage elevator and bypass the lobby to go directly to each floor. We are trying to determine the best method of conducting the Option 3, Approach 2 random sampling of the building population by conducting in person surveys by “standing by the elevator” approach as discussed in previous threads and trying to determine the best approach in order for the survey to be statistically representative of the building population. If we stand in the lobby only, we will miss those that have parked in the garage and bypassed the lobby on their way to their floor. Has anyone had any experience with sampling such a building? Would it make sense to have one surveyor located at the entrance to the parking garage to survey cars as they drive through and one in the lobby to catch those coming through the front entrance to the main elevator bank ? Or would it be more appropriate to station surveyors at each level above the lobby and survey as occupants exit onto their respective floors? Any input is appreciated!
Given that the different entrances serve people who are using different modes of transport, it seems important to include them both in the survey somehow. I think either of the approaches you outlined seem sound. My thought is that people might be less likely to toss the survey once they are in the building, rather than still in their cars. It's always a chore to gather everything from one's car to come inside.
Just two quick notes on this
- You've correctly noted the key challenge with the 'elevator survey' approach; you have to be able to survey at all points of entry to the building to ensure you are getting commuters coming via various means. For this building, I think your idea of stationing surveyors at each level above the lobby as folks exit the elevators is a great one - it may require more folks than the alternative, but it solves the problem nicely. Unfortunately, rather than the convenient window where people are waiting for the elevator, you'll have to slow folks down on their way to their destinations - that could lead to more non-respondents. Also, take care to ensure that you balance the surveys per floor in representative fashion.
- Also to Tristan's comment - I want to just clarify that the elevator survey is rarely conducted with a form or hard copy survey; it is almost always verbal to minimize non-respondence.
Survey
In approach 2 inside the option 3 of this credit we had some uncertainties on how we could proceed with the survey and sampling process. We have set a list of questions which is shown below:
1) This project has two towers in the same site boundary. We would like to know if it is possible to estimate our sample size considering both as a single building, or if it’s necessary to do one sample size for each tower.
2) About the survey timing, do we have mandatorily to do the survey from Monday to Friday, isn’t it possible to do it, for example, from Wednesday to Tuesday? Is there any problem if we have a weekend in the middle of the five consecutive workdays?
3) Performing the survey according to the proceedings, developing it each day or at the conclusion of five consecutive days, is it possible to extend the period of survey into twenty days? If not, do we have to interview all the building´s employees in only one week? For example: we could interview 25% of the employees in the first week, more 25% in the next week and so on.
4) About the methodology for the choice of a determinate sample of respondents, can we establish a random sampling based on a list of employees chosen randomly at the moment of the survey, without a predetermined list? In case of absent of a previous determined employee, how should we proceed?
5) If we develop a survey each day over five consecutive workdays, what are we supposed to do if some employee is absent after answering in some of the days? How can we represent this lack of information?
I would suggest a different model for conducting the survey than the one you are proposing. Your question suggests that your team plans to interview building occupants at the end of each day in a 5 day period. While that is certainly a marvelous approach to getting highly reliable data, it is more than EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems. requires. Most SSc4 surveys are conducted on a SINGLE day, asking respondents to describe their commuting behavior over the preceding 5 day period. In applying that model to some of your questions:
2) If there is a compelling reason for to include a weekend, it is probably fine but the intent here is to survey folks in a way that is most likely to get accurate information. The longer in the past a given day's commute was, the less likely that information is to be accurate.
3) Assuming you could survey during a set of weeks very close together, and that you have clearly discrete building subpopulations to survey (to ensure no respondents are being surveyed twice), this is also technically probably ok. Again, a reviewer would want to understand why this deviation from the norm was important, but if your reason is convincing, I think it would be OK.
4) Yes - a list of employees at some point in the survey development process will be fine. Your list should include enough surplus respondents to that you have replacements for employees who are absent or otherwise unable to respond.
5) Absent employees should not be included in the survey sample if they are absent throughout the 5-day survey period - they are simply not commuters that week. If you need to include an employee who is absent one day of the five, you'd have to count that person as a 4/5th employee, as you can't count their absentee day as either a conventional or alternative commute - therefore you have to discount the employee themself. That one's thorny!
And finally, to Question 1 - this really comes down to your LEED project boundary. If you are talking about a single LEED project, then the sample size can be from both towers; if these are separate LEED projects, then each one needs to hit the threshold as individual projects.
Hope that helps
Dan
One more question on Students...
We have a campus college project with the majority of the college housed in one building. There are three different departments of this college in the building, so defining the staff and doing a survey is not a problem there.
However, the students would comprise over 80% of the building, and the majority of their classes are in this same building. It there a exclusion for students specifically? If a survey is done, could they be counted? The majority would walk or take campus transportation, even if they have apartments in town.
Thanks for any guildance or clarification.
Scott, as I understand it, you've got students coming to/from the building to attend classes during the day - From an EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating sytems. perspective, these are effectively the same as folks commuting to and from work and should therefore be included. Rather than asking how students reached 'the building' that day, you may want to ask how they reached 'campus', as that is more likely to capture their relevant transportation use (and reduce multiple counts from students who leave the building and return during the school day), but otherwise, its not dissimilar to a conventional commercial office building in most regards. Hope that helps.
Shuttle service from main campus to satellite location
One of the large tenants in the project building provides a shuttle from their main campus to this satellite location (in a mixed tenant commercial building). The shuttle makes 6 roundtrips on a regular schedule throughout the day, and does not begin or end it's day at this location. A number of the regular building occupants get themselves to the main campus in various ways and then ride the shuttle to and from this location similar to a park and ride lot.
My question is: would you count this mode like you would public transit- zero trips; or would you make some assumption about ridership and treat it like a vanpool? Thanks in advance.
That's a tough one Lisa. If this were my client, I think I would want to learn as much as I could about the subgroup of folks that use the shuttle bus as the last link in their commute. The two things that would most interest me are a) How they get to the main campus and b) For occupants arriving at the main campus by conventional means, what distance is the trip from home to the main campus. Occupants arriving at the main campus by alternative means would be considered zero trips (unless its a carpool of course). But for occupants arriving at the main campus by conventional means, it would be really helpful to have some sense as to the portion of their daily commute that the shuttle represents. If I'm commuting 30 miles and only the last 5 is by shuttle, that's very different than the inverse, or even a 15/15 mile split. I think I would try to get a handle on those average distances, then assign a trip reduction accordingly. Does that help at all?
Yes, I think we are on the same track. The main campus and this satellite location are about 18 miles apart. I worded the question to require that they list the *longest* part of their commute if it was mixed. So, if they drove 5 miles to campus, parked and then took the shuttle the 18 miles they can claim the shuttle. Just to be sure, I'll go back and look at the zip codes of the shuttle riders to see the possible distance from home to the main campus. And FYI, I contacted ACEEE about when they'll be adding the 2011 cars to "the list," and they said not before February.
And the answer is that all but one of them live on or around the main campus! So, as far as I am concerned, that constitues zero trips! The other person's first leg of the trip is shorter than the second.
SSc4 Credit Clarification - Calculation of AVR & RCCT
We are working on the achievement of credit points under SSc4 under v2009. My project building is operating for 24 hours. There are two shifts of operation and one general shift (8:30 a.m to 5:30 p.m). We conducted the survey compliant with SCAQMD guidelines for general shift employees. We know 85% of the respondents use van pool facility/public transportation and remaining 15% respondent use individual vehicle.
We calculated the AVR (7.9) & RCCT (87%) as per the Example # 4 given in page 30 of LEED ref guide for green building O&M – 2009 edition. I would like to know if we are still eligible to achieve maximum 15 points.
Thank you for any assistance!
Is there a specific reason you think you might NOT be eligible for the points? Trying to understand your question... thanks!
My project building has 593 regular occupants. The survey was conducted over 5 consecutive workdays (i.e. Monday through Friday). Each surveyed employee signed the survey sheet and marked the transportation mode used to travel to the building in all shifts on each of those 5 days. Response rate is 100% of the regular building occupants & there are no absentees.
Almost 518 commute using the pooling facility the number of weekly commute trips would be 5,180 per week (518 occupants x 2 trips per day x 5 days per week). Occupants use single-occupant vehicles to travel to work make 750 trips to and from the building each week (75 occupants x 2 trips per day x 5 days per week). We have calculated the RCCT is 87%. In this instance the AVR is 7.9
Is this correct?
The RCCT seems right and you're meeting the requirement to earn the maximum number of points under the credit.
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