Hi, I was attending a session with IGBC recently and there was a problem faced unanimously about percolation rate of different soil types. I would request, if you have any data related to this, it will be indeed very helpful as green building projects across India are facing this problem while designing their rainwater harvesting pits and also applying for green certifications. Thanks Kushagra Juneja| LEED AP (O&M) IGBC AP| GRIHA Trainer & Evaluator Managing Partner| Design To Occupancy-D2O D: 91 96023 32434| O: 0141-3323832