and clean all the heat exchangers so we don't have a large build up. . >> go around? . >> yeah. (sound of hammering). >> what i'm trying to do, charles, is always pull it out on the low stroke. >> right. so you are not, like, flying out. now talk about clean up. . >> then where does this stuff get deposited? . >> we're going to dump it in a debris box and it will go back to the plant. >> if you think back, the romans came up with a system of plumbing that allowed us it use water to transport waste away from the hub of civilization, which enabled cities to grow. . >> you have a large bowl, a drive motor and another motor with a planetary gearbox with differential pressure inside there. the large mass up there spinning separating the solids from the liquid. we have to prevent about once a month, we go in there grease those, change the oil, check the vibration levels. the operators can tell just by the hum of that machine that it's a harmonic noise emitted that it's out of balance and the machine needs to be cleaned. it will start vibrating and we have vibration analysis machines that will come over here and check the levels. so it's kind of an on-going thing that you have to stay on top of on a daily basis. >> handled properly, you take organic residuals, as we call them, that are leftovers of our society and turn them back into some energy. and we have another ability to take that sludge and get a nutrient value for crops there. we actually are running a kind of composting energy recovery system. >> well, this is a dirty job. we try to do it safely and we try to do it without imposing too much on the public. people want to flush their toilets and have things go away and not be bothersome again. we do a lot to try to accomplish that. i'd like to invite you to come back any time you want. once you got this in your blood, you are not going to be able to stay away. the raging waters are fun and when we do digester cleaning i really hope you can come back. that's quite a sight. >> yeah, that sounds interesting. >> i really appreciate you coming by and it was a when a resident of san francisco is looking for health care, you look in your neighborhood first. what is closest to you? if you come to a neighborhood health center or a clinic, you then have access it a system of care in the community health network. we are a system of care that was probably based on the family practice model, but it was really clear that there are special populations with special needs. the cole street clinic is a youth clinic in the heart of the haight ashbury and they target youth. tom woodell takes care of many of the central city residents and they have great expertise in providing services for many of the homeless. potrero hill and southeast health centers are health centers in those particular communities that are family health centers, so they provide health care to patients across the age span. . >> many of our clients are working poor. they pay their taxes. they may run into a rough patch now and then and what we're able to provide is a bridge towards getting them back on their feet. the center averages about 14,000 visits a year in the health clinic alone. one of the areas that we specialize in is family medicine, but the additional focus of that is is to provide care to women and children. women find out they're pregnant, we talk to them about the importance of getting good prenatal care which takes many visits. we initially will see them for their full physical to determine their base line health, and then enroll them in prenatal care which occurs over the next 9 months. group prenatal care is designed to give women the opportunity to bond during their pregnancy with other women that have similar due dates. our doctors here are family doctors. they are able to help these women deliver their babies at the hospital, at general hospital. we also have the wic program, which is a program that provides food vouchers for our families after they have their children, up to age 5 they are able to receive food vouchers to get milk and cereal for their children. >> it's for the city, not only our clinic, but the city. we have all our children in san francisco should have insurance now because if they are low income enough, they get medical. if they actually have a little more assets, a little more income, they can get happy family. we do have family who come outside of our neighborhood to come on our clinic. one thing i learn from our clients, no matter how old they are, no matter how little english they know, they know how to get to chinatown, meaning they know how to get to our clinic. 85 percent of our staff is bilingual because we are serving many monolingual chinese patients. they can be child care providers so our clients can go out and work. >> we found more and more women of child bearing age come down with cancer and they have kids and the kids were having a horrible time and parents were having a horrible time. how do parents tell their kids they may not be here? what we do is provide a place and the material and support and then they figure out their own truth, what it means to them. i see the behavior change in front of my eyes. maybe they have never been able to go out of boundaries, their lives have been so rigid to sort of expressing that makes tremendous changes. because we did what we did, it is now sort of a nationwide model. >> i think you would be surprised if you come to these clinics. many of them i think would be your neighbors if you knew that. often times we just don't discuss that. we treat husband and wife and they bring in their kids or we treat the grandparents and then the next generation. there are people who come in who need treatment for their heart disease or for their diabetes or their high blood pressure or their cholesterol or their hepatitis b. we actually provide group medical visits and group education classes and meeting people who have similar chronic illnesses as you do really helps you understand that you are not alone in dealing with this. and it validates the experiences that you have and so you learn from each other. >> i think it's very important to try to be in tune with the needs of the community and a lot of our patients have -- a lot of our patients are actually immigrants who have a lot of competing priorities, family issues, child care issues, maybe not being able to find work or finding work and not being insured and health care sometimes isn't the top priority for them. we need to understand that so that we can help them take care of themselves physically and emotionally to deal with all these other things. they also have to be working through with people living longer and living with more chronic conditions i think we're going to see more patients coming through. >> starting next year, every day 10,000 people will hit the age of 60 until 2020. . >> the needs of the patients that we see at kerr senior center often have to do with the consequences of long standing substance abuse and mental illness, linked to their chronic diseases. heart failure, hypertension, diabetes, cancer, stroke, those kinds of chronic illnesses. when you get them in your 30's and 40's and you have them into your aging process, you are not going to have a comfortable old age. you are also seeing in terms of epidemics, an increase in alzheimer's and it is going to increase as the population increases. there are quite a few seniors who have mental health problems but they are also, the majority of seniors, who are hard-working, who had minimum wage jobs their whole lives, who paid social security. think about living on $889 a month in the city of san francisco needing to buy medication, one meal a day, hopefully, and health care. if we could provide health care early on we might prevent (inaudible) and people would be less likely to end up in the emergency room with a drastic outcome. we could actually provide prevention and health care to people who had no other way of getting health care, those without insurance, it might be more cost effectiti i'm the president of friends of mclaren park. it is one of the oldest neighborhood community park groups in san francisco. i give a lot of tours through the park. during those tours, a lot of the folks in the group will think of the park as very scary. it has a lot of hills, there's a lot of dense groves. once you get towards the center of the park you really lose your orientation. you are very much in a remote area. there are a lot of trees that shield your view from the urban setting. you would simply see different groves that gives you a sense of freedom, of being outdoors, not being burdened by the worries of city life. john mclaren had said that golden gate park was too far away. he proposed that we have a park in the south end of the city. the campaign slogan was, people need this open space. one of the things that had to open is there were a lot of people who did a homestead here, about 25 different families. their property had to be bought up. so it took from 1928 to 1957 to buy up all the parcels of land that ended up in this 317 acres. the park, as a general rule, is heavily used in the mornings and the evenings. one of the favorite places is up by the upper reservoir because dogs get to go swim. it's extremely popular. many fights in the city, as you know, about dogs in parks. we have 317 acres and god knows there's plenty of room for both of us. man and his best friend. early in the morning people before they go to work will walk their dogs or go on a jog themselves with their dogs. joggers love the park, there's 7 miles of hiking trails and there's off trail paths that hikers can take. all the recreational areas are heavily used on weekends. we have the group picnic area which should accommodate 200 people, tennis courts are full. it also has 3 playground areas. the ampitheater was built in 1972. it was the home of the first blues festival. given the fact that jerry garcia used to play in this park, he was from this neighborhood, everybody knows his reputation. we thought what a great thing it would be to have an ampitheater named after jerry garcia. that is a name that has panache. it brings people from all over the bay area to the ampitheater. the calls that come in, we'd like to do a concert at the jerry garcia ampitheater and we do everything we can to accommodate them and help them because it gets people into the park. people like a lot of color and that's what they call a park. other people don't. you have to try to reconcile all those different points of view. what should a park look like and what should it have? should it be manicured, should it be nice little cobblestones around all of the paths and like that. the biggest objective of course is getting people into the park to appreciate open space. whatever that's going to take to make them happy, to get them there, that's the main goal. if it takes a planter with flowers and stuff like that, fine. you know, so what? people need to get away from that urban rush and noise and this is a perfect place to do it. feedback is always amazement. they don't believe that it's in san francisco. we have visitors who will say, i never knew this was here and i'm a native san franciscoan. they wonder how long it's been here. when i tell them next year we'll get to celebrate the 80th anniversary of the park,k,