it also depends on what time they get there. et might be later in the day. -- it might be later. you also have the 25th ground- breaking. and you are having a town celebration. the next issue is golden gate. president crowley: pardon me, would you take the microphone and identify yourself? that is all right. yes.

>> ms. harris, damanti -- i wanted to specifically herar the cac. is there something in writing that i could take with me? i did not hear it. president crowley: we will ask mr. richard to come up. i believe you are responsible for the report? to briefly share with this person the carmine report that we have. madam, he is going to briefly report on that for you. thank you, steve. >> you have in your packets a

quarterly update report, the first of believe in 2009, the last report to the commission, and it provides the latest information we have. this has been in our system for the last several years. using chloramine, it has resulted in our reduction in the use of will recall by products. when you use a straight chlorine, it forms disinfection byproducts, which in many cases are considered to be carcinogens, so you still love it efficient defection -- so you still love each fission disinfection. there is additional research going on out there.

i believe that report is online. there is a report from the epa region 9 that would reinforce that we were on the right track in terms of usage in san francisco. secretary housh: i think there may be a problem with the packets. we will make sure you get them.

president crowley: generally, these are sent out ahead of time. i can always make sure and bring extra copies. >> madam? >> the 2009 meeting, so the status on the research, the chloramine? >> we were looking at putting

out an rfp looking directly at bat, and no one has proposed that yet, so we're scratching our heads, trying to figure out how to get someone interested in that research. we're still hoping for more responses. we were looking to see if we had done the questions wrong commissioner -- do the questions wrong. commissioner: --

>> it is a bit of a mystery. usually, you would get some kind of response. president crowley: all right. thank you. madam, we will come back to this agenda item in a moment. now what? >> it is my understanding there have been reports and other amplaces about the effect of chlorinated water on wildlife, various kinds. i do not see any mention a olcott on wildlife in this brief

report, and i want to know why we do not have any, and if we do not, why? secretary housh: as we get back to a regular reports. the next is on golden gate, the building going up. there is a brief update on where we are with that. >> good afternoon, i in shelby gamble, the project director for 525, . there we go. so we have completed the design documents, and i think probably the biggest challenge we have

had on the product so far is getting the design to the level that we could have trade packages put together to get on with the project. signed documents have now been completed, and we issued them to dbi, who expeditiously responded with comments, and we responded to that. we are good to go with dbi. we will be issuing the majority of packages for this product in october. -- packages. the next time i come before you, which will be december, which should be out in the project, i will let you know where we are with the budget. hopefully, that is very positive. the trade was elected at the end

of july. i hope most of you have noticed that. is the only trade in san francisco, i think, and a couple of weeks after that, we had installed things into the site. this is to give you an example of how rapidly the progress is going on. the rebar is still being completed, and report the foundation, and a week afterwards, the slab theire, and we went to erecting the columns, so we are pouring on a regular basis, and monday, we began

construction of level one, and level two, the deck for level two, that will commence in october. we are on schedule. the other update that i want to bring your attention to today is that we went back to the planning department for the encroachments surrounding the site, and there is a narrow strip along the length of the building, and when we brought it up, we were really pleased to get such a positive response to them, and we found out that it extends for several blocks, and it has been built over on every single block but this one, so it is in conformance with that.

these are on the east and west ends of the building. >> the number of children that can be at the child care center is directly related to the play space. we have enough indoor space, but outdoor space per child was a problem, so if we can block off more of that street, we can have more children. commissioner: not to get into too much of the micro design, but it would be great if you could look into some garden some planting area, that some

sort of natural space be put in as part of the child care planning. >> it will probably end up being a temporary enclosure. gates that can be open for fire access and other things, so some other things might be useful, and things that block the alley permanently, they probably will not like. we are still working on that. commissioner: but if you do free of that space, planting is going to be very limited, because we need this square-foot,so we're looking at creating mounds that are also play areas.

unfortunately, that rendering is at night. i do not know how realistic that is. the priority will be given to the puc, and then it city employees, and then the next tier is the public. president crowley: in this case, we reserve space, so i would think we will look at something like this. >> as you know, there are several innovative features, and i thought it would be good as part of the update to go into a

little more detail of some of these features and some of the updates, and today, i would like to tell you about the machine korea going to install at that site. -- we are going to install at that site. we are not only going to treat gray water, blackwater. i wish i could get it and the more focused. the reason i am showing you this line is just to show you the flow of water, and so, i wanted to show that this uses water that comes from showers and cooling towers, and the toilets are all treated as part of the living machine, and it is positive in the reclaimed water reservoir for use in our

toilets, and then it demonstrates the rainwater harvesting for irrigation, and that is just under 30,000 gallons to store as much. we're going to have the capacity to treat up to five dozen gallons per day. this as really to maximize the value of doing this. you have to look at this as an eco block or eco neighborhood, so we are looking for using the excess water for the greater sustainability district in the future.

looking at this on a bigger scale, i also think this is very important piece features -- to look at these features. commissioner: will the piping go in, or will that be later? >> we will be able to access this and take it to other locations. commissioner: so you transport it? >> i just mean that we will be able to tie into the building. in the future, you could tie into it. commissioner: some piping or something. commissioner: is that where there are these microorganisms?

>> i like it when i am prepared. the living machine is an on-site ecological waste water approach that produces waste water without chemicals, motor, buy products, or high energy usage. it replicates the process at a micro level. this uses treatment cells, 10 times per day. the rapid recycling brings an oxygen and high levels, allowing bacteria to get a lot of oxygen into the area without having to force it into the water. first of all, i will show this slide. the water goes into a tank to filter solids, and then it goes into a recirculating tank, and that takes it through the cells and are in the planted area in

the project but it then goes to a third take -- tank, two final polishing cells. this is on a micro level. and if we can switch over it, to the document camera, one of the biggest challenges we had was having and of planting area in the urban location, so this is really taking a lot of cooperation, which really do not have yet. it is taking a lot of cooperation to have more planting areas than is to collect -- than is typical.

this is about 150 square feet for every 1,000 gallons that you treat, so we are treating 5,000 gallons, and that is 750 square feet of planted area, so you can see that the bacteria clings to the gravel and roots of the planted area, and the question i often get, especially if it is outside, can people reach it? that is something that we're working with dph and dbi a lot, because that is their concern, can the public get at this, and should that be an issue, and you can also see how this moves through each of the cells. this is a very horizontal lay-up compared to ours, but we will have these in different planted areas, and this leads me to my

last slides, and the reason i bring this up is to show you the extent of the planted areas, so you can see the eastside and the eand there are planted areas on both sides. the planted area would be inside the lobby, and that ends up with the total square footage we need for this system to work, so i think it will be a fantastic demonstration for public tours as part of the project, so that is what i wanted to bring you up on today, and stay tuned. there will be more. do you have any questions? pardon me? but commissioner: what is the completion date? >> it is spring of 2012.

great that you're going to be modeling that. are there plans for any rooftop gardening at all? f.@w÷/'d with the solar panels on the roof, so we looked at trying to do a green roof, and that was several iterations ago. work, but it did not work to be able to do that. zacommissioner moran: to understand in more detail what this living machine is about, if

there is something, i would be interested in it. >> yes, there is a website that has a ton of information on it, and i can give you what we gave to dbi, which has a lot of technical information in it, and the website with the living machine has a lot. we were hoping would be the first, but it was just installed in portland, eso we would be the only second one to do it in the country. also, in regard to the roof, it has to be in proximity to force it to work for the living machine. they are in -- investigating the living machine for the zoo, which would be a very large platform. i think the biggest challenge is that i wanted to push the boundaries, but when i evaluate

it for irrigation, it would not negatively impact plants, but then you get to the public health issues, and that is the biggest challenge, having any of those remain in the water. commission appear -- commissioner: is john the founder? i just wanted to note -- to know. >> they got out the original company. -- they bought out the previous

owner. i am hoping that we see a positive savings when we complete the buy up for the project. -- the buyout for the project. we have plans for the child care center and the cafe. will it stay on budget? yes. president crowley: colleagues, anything else? commissioner: i am fascinated by the living machine. there might be ways to tie this into another program, because we are hoping for more greenspace around a particular treatment facilities, and maybe there is a real opportunity, and i do not know if we need to tested first or if there is a way to think about bringing in online to

treat this like an gray water. -- is black and gray water. >> good afternoon, for waste water. we're looking at the living machine. we just wanted to make sure that there was a bypass line. there will be some facilities that will be built as part of that. how much of that we can actually do, and we are involved.

commissioner: we could find it broad enough to do other things. commissioner: this does what a sewage pond does, right? >> there is the opportunity that if we make it work here, this is where i really see it happening. president crowley: 80, tom. thank you, ms. campbell. -- thank you, tom. secretary housh: next up is the

closure of the pr -- potrero power play. >> and we're going to continue to call a a closure, because that is our plan. the team was going back to develop a plan. they have made the effort, and the project is now in a new testing period. meanwhile, as the clock runs, we are at the time of year when the california independent system operator considers its needs for reliability to obligate this within its control area to continue to run. the iso staff recommended on september 9 to their board of governors, last thursday, to continue to obligate the potrero

plant to operate. the iso board unanimously approved that. rmr contracts that you hear us talk about. they did actually update it regularly. this directed the staff to modify the resolution to ensure their desire for closure as soon as possible can be reflected in the formal action they took. the city attorney and supervisor maxwell, the district where it is located, both sent a letter to the iso board of governors $ie;u.et7vünn?"[m6itheir persh the closure.

÷úñrthey were also speaking on behalf of citizens to ensure its closure, so this continues, together with stakeholders, to apply pressure and to make it clear to the iso that we look forward to closure. i think the communications between staff, both at the puc, myself, the city attorney, with the mayor's office, with the stakeholders, it has been good in this process, so i think we're seeing really positive improvements in that regard. we have different opinions about the technical information. xibñiñiñiduring the board of gos meeting,