this is not an e.i.p., but it is a project that informed our streetscapes synergy program which sarah blume will be talking about a little bit later. this is an opportunityistic project. partnership with the department of public works and it was built before our construction standards were in place. there's a few by retention that are smaller than we'd probably install today. despite that, 'ng really great benefits for our sewer system. as you can see here, this project removes an average of 1.5 million galls of storm water per year and we monitor this project during the 2014-15 rainy season, which if you recall wawhen san francisco experienced a sequence of very large storms that. makes these monitoring results particularly exciting because we got to measure how these build-outs performed during those storms. storms that exceeded the level of service. a number of the larger build-outs reduced those very large storms by up to 75%. [please stand b >>> we're measuring just the performance of the green infrastructure itself, correct. good point. >>> so do you have a guesstimate of how mu