ensured that this could be used by other municipalities in other climates, both economic and climateological. this result was pioneering and largely the result of barry's effort. working large wee with our partners, we crafted an agreement in support of senator wiener, with the green roofs project. the second phase established that solar living roofs are a combination to be deployed. these requirements which took effect on january 31, 2017 constituted the first such mandate in the country. the time between the previously mentioned 2013 conference and the moment the ordinance took effect in 2017 was used to develop a complete geography set of i ever willmentation tools. when the ordinance took effect we were fully implementation ready. and these are among the accrued benefits anticipated to accrue over 15 years. 15 to $100 million in additional tax revenues, between 60,000 and 385,000 tons of carbon he mission avoided or is he questered. since that time we recently assisted in developing an economic analysis similar to denver to support a citizen driven ballot initiative to garner votes. san