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CI-2009 MRc2:Construction Waste Management

MRc2 Construction Waste Management

I have comingled waste and diverted metals.  One recycler sorts CMU, wood, paper/cardboard and metal off-site and records are kept in CYDs.  The other two recycle centers do Ferrous metals and non-ferrous metals, which was recorded in tonnage with records.  I used the LEED conversion form to calculate tonnage from the cubic yards that was recorded so that ALL materials diverted from the landfill are the same units.  When going into the Form to input comingled and inputting the total waste, each column for CMU, Lumber, Paper/cardboard and metals, the total waste in each column adds to the total form at the end to make it 4 times higher than the recorded total waste, giving an inaccurate percentage of diverted waste?  I cannot find any information in regards to filling this out correctly to get the correct percentage diverted?

I collected all the information and put it into an Excel spreadsheet to keep a total of the waste diverted and total waste collected, and thought that it can just be inputted into the Form.  Are you supposed to input each months comingled total on each individual line for the past 2 1/2 years?

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Sun, 02/04/2018 - 14:52

Michael - My apologies for not getting back to you sooner. I was on business travel.  Can you please tell me what form version you are using? (You can get this information from the lower right corner.) I haven't run across this problem but I haven't used the v06 version of the CI form. I attempted to recreate your situation but am not sure I have enough information to do so. But there could be a problem with the form. Please let me know the form version so we can report a problem to USGBC if needed. In the meantime, if you are ready to submit your project, you could skip the Table: Construction Waste Diversion table and use Special Circumstances. Note the problem in the Special Circumstances text box and then upload a cleaned up, easy to interpret version of your spreadsheet. Provide the required backup for commingled under that upload. Regarding your last question, my answer is No. I have always combined my waste data by material by vendor for the entire project and have never input it by month.  

Mon, 02/05/2018 - 14:41

I am using CI v2009

Mon, 02/05/2018 - 15:48

The form is v06 in CI v2009
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LEEDuser Expert
472 thumbs up

Thu, 02/08/2018 - 21:55

Michael - Thanks! Here are a couple of thoughts:
  • If you pick 100% for "Commingled" the calculation is skewed. Per the instructions "If 100% of commingled waste is diverted from landfill, select "Diverted" in the "Disposal Method" column." Did you do that? Note: I would use the Special Circumstances of the form to explain why you did this for commingled collection.
  • I wasn't able to recreate the problem that you described because I couldn't quite follow it. But could it be that you are trying to do use "Commingled" for each of the four materials with a total volume instead of using "Diverted" with a volume for each specific material? (In this case, "Total Waste" is the waste quantity for each material - not the total waste for the entire commingled volume.) I'd use "Diverted" for the materials as noted in the first bullet that you have volumes for and then input the remaining volume under "Commingled" (or "Landfill Waste"). Does that help?
If none of the above helps, you can either follow my advice from 2/4/18 or complete these steps:
  1. Use Special Circumstances on the v06 form in LEED Online and say that due to a perceived form calculation error, you had to revert to the earlier form version.
  2. Go to the Credit Library (https://www.usgbc.org/credits/commercial-interiors/v2009) to navigate to MRc2 (https://www.usgbc.org/node/1731280?return=/credits/commercial-interiors/v2009). 
  3. In the right sidebar Sample forms, download the Active Form under Version: v04.
  4. Complete the form and upload it to LEED Online along with your spreadsheet backup.
Please let us know what worked above (if anything) for you. BTW - My experience has been that weight usually gets you a higher overall percentage recycled than volume. Have you considered converting your volume to weight?

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