testing that recology conducted in portland, we've selected a vermeer trommel screen in lieu of the terex unit that was tested at dixon that we included in the rate application. we believe that this piece of equipment has a better end feed system and bag breaking technology and given that that this piece of equipment that we have selected and we can't, unfortunately source a rental powered trommel screen, so a long term rental option for the diesel powered unit is available. but unfortunately the bay area air quality management district will not allow us to run a diesel unit within the city and county of san francisco in order to meet our commitments to the composting facility. we must look towards purchasing a new piece of equipment in lieu of renting the piece of equipment as we had planned. additionally, we've encountered a bit of a permit hurdle with the bay area air quality management district. it has a direct impact on the programmatic costs associated with the recology rate proposal , the enhanced processing of organics will increase our facility emissions and recology san francisc