Good morning. Today is september 9, 2015. Welcome to the rules committee of the San Francisco board of supervisors. My name is john avalos, chair of the committee and to my right is katy tang and to my left is president london breed who is here in place of supervisor cohen. Our clerk today is alisa somera and the meeting is brought by sfgtv. Madam clerk do we have any announcements . S yes, please silent all cell phones and documents should be submitted to the clerk. Items will be on the september 22 board of supervisors agenda unless otherwise stated. Great. Thank you. First could we have a motion to excuse supervisor cohen. So moved. And seconded by supervisor breed and take that without objection and item 1. Item 1 is a motion of reappointment to have bryant tan for the Successor Agency commiss Entertainment Commission. Hello and please introduce yourself what you hope to do with the reappointment. Thank you. I am bryant tan and seeking reappointment for another term on the Entertai
The process. And, so there is a lot more positive to it. And our challenge as we look forward is actually to handling of the food waste. You know, again today, the city has a contract with them to actually pick up the food waste, and recology has indicated that they do not have the capacity to segregate the food in the city and so they transport it by truck and they are planning to build a digester in vacaville and to feed the fuel of the truck that are being used to transport. And so we have the capacity, for high strength waste, and if we were to get a full high strength waste, we can certainly process it, but challenges that we see, and that we have seen everywhere including in oslow is for the high strength waste to be effective it needs to be 100 percent organic and there needs to be a diligent process prelined to be sure that none of the organic processes have been taken out, the most common are forks and knives and plates that have been thrown in on accident. And is that differe
Okay, what did you find that the operating costs. We found that in terms of one and two were the most expensive, and number one, with the mechanical drawing, because of the cost of electricity, of learning the mechanical dryers and then two, the Staff Associated it. And so, as an example, when we did visit williams end in ireland, that it is a very large plant and they actually went two operations at the same time on the plant and one they were on the thermal process that they put in ten years ago and in another area, they continue to run the older process, which was the mechanical drawing and they told us that comparing the two, the mechanical drawing costs 5 times more to operate than the thermal process on their plant. And we did i ran an independent analysis and found the numbers to be accurate from analytical perspective and so the mechanical drawing very expensive. Composting was expensive either because of the additional costs associated with buying land and hiring the staff tha
Already clean and it comes out as a very High Temperature and it has been cooled and entered into the digestion, and there are two primary advantages to this particular technology. And one, is that by virtue of the pretreatment process, it actually reduces the volume necessary in the digesters and because it starts to break down the product in the pretreatment, and the second, is that as a result of that, your final bio solids ral value is also reduced and so it can reduce, the capacity needs, by 30 to 50 percent, and reduce your over all bio solids product at the end of your process by ten to 15 percent and not only produces a class a product, but it produces it and makes it more manageable for us to accomplish the 100 percent reuse. We did identify all potential reuses of the bio solids, and alternative and while, alternative one, offered the most options, also, alternatives offer all of the many options within the commercial market and we are comfortable that under any of the four a
By virtue of being introduced to the High Pressure and the high steam, the sludge is broken down at a moleculer level and so when it enters into the digester, the bacteria that we typically use for the digestion process has an easier time to consume it. And so that it makes it easier for the digestion process, therefore, making the digestion process more efficient and more effective reducing the over all size of the digestion that we need and reducing the over all product that they have. And emissions. And emissions yes. And the bacteria that is used in this process and that is similar to the bacteria that is used in the oil spilled consumption. I do not know sir, i do not know what is being spilled. But the bacteria that we do use, in the digestion process which is a mesofile is a very, standard, type of bacteria that we use in the industry and i have an example and in los angeles and chicago where they use the digestion, they use the same type of bacteria. Commissioners . Commissione