We are working on a rent-a-car agency and based on data provided from the previous location, their main end-use for water usage is car washing. This new location includes large tanks with a collection system in the roof design to collect most of the rain water on site and use this for that process. I am trying to find a way to document this measure, any comments or recommendations?
My initial plan is to provide the Indoor Water Use Reduction Calc. as required, and provide an exceptional calculation of the estimated water use for car washing, estimated collected rain water and new adjusted percent savings in potable water; and then use this percentage in the Indoor Water Use Reduction credit threshold. Does this sound reasonable?
Thank you very much, I appreciate any guidance.