with their smart meter. >> good evening, i'm dana king. >> i'm ken bastida. the n word carved into gravestones. not just a couple but dozens of them. you can find them just over 100 miles from the bay area in el dorado hills at the mormon island relocation cemetery. the wording on the stones was put there nearly 60 years ago by a u.s. government agency. recently there have been efforts to try to replace them. robert lyles shows us what's getting in the way. >> reporter: it is said that we bury our past but for this community activist ralph white. >> no would want this word over their grandmother. >> reporter: he is referring to this small cemetery in el dorado hills where the ugliest part of our nation's past isn't buried but on full display. the n word. >> that word is going to come off those gravestones. >> reporter: at least dozen grave markers at the mormon island relocation cemetery silently say those that lie here are unknown. >> it is embarrassing at this day and time. it is insulting. a lot of people have been killed using that word. >> reporter: in 1954 the army corps of engineers moved bodies from negro hill. the core was building folsom dam so the bodies buried had to be moved to higher, dryer land. but here's the twist. the corps moved the body and it seems authorized a name change from negro hill cemetery to the n word cemetery. >> are you frustrated. >> yes, pretty frustrated. >> reporter: joshua michael launched a project to erase this past. he even raised $25,000 from at&t. >> we were going to use 36 headstones, new headstones that we come up with the designs for. >> reporter: but at&t went through the money after the county dragged its feet on the tombstone replacement. >> i was pretty upset. you know. i had this goal of trying to right a wrong. >> it is rather sad that grown adults in el dorado county will put up a young boy to suggest that he can do something that they wouldn't do for their community to deal with systemic institutional racism in el dorado county. >> reporter: michael harris says he has been fighting with el dorado county to identify the remains and replace the tombstones for the past 10 years and still these monuments of hate remain. so how does el dorado county explain the passage of 57 years and headstones still engaved with the n word? not well. in fact, the county cemetery administration declined an on camera interview saying only they are in talks to fix this. he wants to know who they are talking about. >> i asked the county is there any documentation of what you plan on doing in the cemetery? no document. >> reporter: right now it is the army corps of engineers making news. after nearly six decades saying we are deeply ashame and regretful to find this word in our records. our hearts tell us these grave markers should be replaced. but the grave markers are no longer their responsibility. instead, responsibility lies with el dorado county and they have no time line on when the n word will be removed. >> i would be willing to die for something like this. i would be willing to die for even moving one of them. >> reporter: because to ralph white justice delayed is justice denied. in el dorado hills, robert lyles, cbs5. just days after osama bin laden was killed, president obama paid a somber visit to the spot where al-qaida did its greatest damage. and at a new york firehouse the president never mentioned the name bin laden. but as chip reed reports everyone knows what mr. obama meant when he said justice has been done. >> when we say we will never forget we mean what we say. >> reporter: this is not just any firehouse, the home of engine 54 lost 15 men when the twin towers fell, an entire shift. more than any other new york firehouse. a bronze plaque honors their sacrifice and that of their family including 28 children who lost their fathers on 9/11. >> it is some comfort i hope for all of you to know that when those guys took those extraordinary risks going in to pakistan that they were doing it in part because of the sacrifices that were made in this station. they were doing it in the name of your brothers that were lost. >> reporter: at new york's first precinct the president thanked the first police officers to responds on 9/11 reminding them that while bin laden is gone the threat of terrorism is not. >> you're still going to be called on to take courageous actions and remain vigilent but you'll have an entire country behind you when do you it. >> reporter: later he visited ground zero for the first time as president laying a wreath to honor the nearly 3000 people who died here. there was no speech. only quiet words with family members including three young girls who lost their fathers. this sacred ground where the twin towers once stood will soon be a memorial. a stark contrast to the unimaginable destruction of 10 years ago when then president bush vowed to track down the 9/11 perpetrators. >> and the people who knocked these buildings down will hear all of us soon. >> reporter: problem invited mr. bush to join him here today but he declined preferring to remain out of the spotlight. before returning to washington, president obama spoke behind closed doors with families of 9/11 victims. on friday president obama heads for kentucky where he will meet with the helicopter pilots who flew those navy s.e.a.l.s right into bin laden's compound. chip reed, cbs5 news, new york. >> we are learning al-qaida wanted to mark the 10th anniversary of september 11th by attacking u.s. trains according to intelligence navy s.e.a.l.s uncovered in documents in the compound. one option al-qaida was studying trying to tip a train at a valley or off a bridge by tampering with the rails. u.s. officials say that they have no recent intelligence indicating that such a plot is still active. and the pentagon is telling pakistan give us our helicopter back. the chopper the s.e.a.l.s had to blowup in bin laden's compound was unlike any other. the pakistanis have hauled the tail section away. that's all that was left. but an aviation expert tells us that the tail rotar has much different blades so it wouldn't have the typical sound of a helicopter. plus the fuselage was specially shaped to help it avoid radar. also learning more about bin laden's burial. president obama told steve croft of "60 minutes" that the u.s. took the high road. >> what we tried to do was consulting with experts and islamic law and ritual to find out something that was appropriate, that was respectful of the body. frankly, we took more care on this than obviously bin laden took when he killed 3000 people. he didn't have much regard for how they were treated and desecrated but that, again, is something that makes us different. >> you can see steve croft's entire interview with the president sunday at 7 p.m. right here on cbs5. and breaking news out of pleasant hill. there is a gas leak on oak park boulevard. pg&e is working to fix it right now but until they do pg&e is asking people on oak park between stevenson drive and keith circle to stay inside. also to close all windows and turn off the air-conditioning. pg&e stays that right now there is no need for any evacuations. they have also not told us how long it will take to fix this leak. we will keep you posted. also tonight pg&e has the okay from the state public utilities commission to raise rates by 7%. that's compensation for having to dump the old analog meters that were still working and put in smart meters. it was originally the cpuc's idea to switch. this comes as a judge for the first time ever found that smart meters may not be so accurate. mark sayre shows us one bay area couple is about to get a refund. >> this is your smart meter. >> yes. >> reporter: he says the problems with the smart meter in his home quickly became apparent just one month after it was installed. >> my usage went up like two times or more. >> reporter: indeed, the power portion of his pg&e was $97 in october of 2009 using the old meter and jumped to $255 the next month. he and his wife were stunned. >> immediately came to my husband and said we need to do something about it. >> reporter: so they did. first calling pg&e to try to get some answers but after months of higher than normal bills and three separate smart meters the couple took their complaint to an administrative law judge of the california public utilities commission. >> pg&e doesn't want to appropriately explain to me what's going on and denying all my ideas about what is going on with my bill. >> reporter: and the judge agreed saying alexi and his wife are due a refund of $1400 because the higher bills were not due to any actions on their part. >> money is not an issue, justice is the issue. >> reporter: a spokesperson for pg&e says the company cannot discuss this specific case but in general is working to do a better job responding to customer concerns to smart meters. >> as we rolled out the program we have had challenges and concerns we admitted from some of our customers that of course we are working to address. >> reporter: the full cpuc was supposed to ratify the administrative law judge's ruling today but opted to defer it for three weeks. they wonder if they will ever see their $1400 refund. i'm mark sayre in mountain view, cbs5. it really is all about location. people in one community say they are sitting ducks. so they are starting to fight back. how they are secretly telling friend from foe. and a business deal that will keep city workers on the job. how google is helping mountain view avoid layoffs. americans undergo millions of ct scans a year but there is a problem. the simple fix to prevent accidental overdoses. coming up next. that's a 500- percent increase from just 15 years ago. it's the 72 million americans had cat scans last year. it is the most common diagnostic test and is the most regulated. that lack of oversight could put your health at risk. >> they are referred to as patient number 1. >> reporter: michael's mystery illness started after going to the hospital for a stroke. >> my entire body had welts all over it. >> reporter: suffered dizzy spells, memory loss and a few weeks later. >> i noticed that i lost my hair. this band 4 inches wide around my head. >> reporter: barbara suffered almost identical symptoms after her surgery at the same hospital. >> my hair was coming out in handfuls up above the ear and around. >> reporter: the common denominator. both had undergone ct scans of the brain. the bald bands around their heads were the exact same shape as the cradle of the ct scanning machine. the hospital in l.a. admitted 250 patients had been accidentally exposed to a higher than expected level of x- ray radiation in 2008 and 2009. >> my understanding is that i have received more radiation than an individual who was within 2 miles of the explosion in japan. >> reporter: the overdoses were found to be eight times higher than normal and were likely as a result of improper use of the scanner which highlights what critics call a glaring problem. while the fda oversees manufacturers of ct machines there is no government oversight on how these machines are operated in medical facilities. >> there has been basically an unregulated wild, wild west approach. >> reporter: attorney rick patterson represents many of the videotapes. >> it can kill you ifs dialed high enough. you could be dead by the time you get to the parking lot. >> reporter: but extreme cases of overradiation aren't the only issue. >> the day-to-day problem is the radiation is higher than it should be. >> reporter: ucsf raidologist professor rebecca smith says a lack of national guidelines allows radiation doses to vary widely, sometimes exposing patients more than needed. >> it can lead to an increased risk of cancer but that cancer won't occur right away. could occur in five years, 10 years, or 20 years. >> reporter: in a study published just over a year ago the doctor looked at over 1100 patients undergoing ct scans at four bay area hospitals. ucsf, california pacific, marin general and alta bates. >> twice as high as they should have been for the average. >> reporter: all four bay area hospitals told us they made changes to keep radiation doses as low as possible. >> we need very clear standards for what are acceptable levels of radiation exposure. >> reporter: as for accidents like the cases at the hospital says manufacturers have a fix. an alert system called a dose check. >> some manufacturers have already begun shipping new equipment with the new feature. and before the end of this year all manufacturers will have done so. >> reporter: but the fix comes too late for another round of radiation overdoses that came to light this spring in west virginia at a hospital leaving at least 20 more patients to worry about what their future holds. >> i live with this anxiety every day. i go to sleep with it and wake up with it. >> am i going to survive it? am i going to die from cancer? how long will this take? >> reporter: a law passed last year will require hospitals and imaging facilities to report ct radiation doses to patients and to their doctors by 2012. it sounds like a no brain, but believe it or not that is not happening now and there is still no move toward government regulation to keep radiation doses down. >> i had no idea it was unregulated. >> these are multimillion dollar machines and cost thousands of dollars to get one and there is still no cutoff switch and no alarm to let the operator know there has been a malfunction. >> elizabeth cook, thank you very much. well, people in a south fremont neighborhood hope that stickers help keep them safe. after a rash of home burglaries the most recent this morning when a thief held a knife to a woman's throat. police are warning homeowners to keep doors and windows locked. but one woman started creating windshield stickers for her neighbors. >> anytime that any of us are in the neighborhood during the day we drive up and down the street and kind of make sure that all of the cars belong here. >> three suspected burglars have been arrested. neighbors think that they are being targeted because they are close to the freeway. google has helped the city of mountain view avoid some layoffs. the internet giant agreed to pay the city for a 52-year lease on a piece of land up front. that amounts to $30 million. the payment will help the city deal with its budget gap by generating interest earnings that will help avoid service reductions. mountain view still hopes to get concessions from some of its employee unions. checking in with roberta now to see if tomorrow will be as fabulous as today will be. >> i think not. >> oh. >> straight to the point. tonight we have clear skies as we take a look out. in is our live camera aboard chopper 5 high in the sky. crescent moon on its way to becoming a full moon may 17th. this picture is very important because it does indicate we still have clear skies with the marine layer still offshore but the winds have rotated around and currently we have dropped down to 62 degrees in san francisco after a high today of 74 degrees. we dropped about 24 degrees in redwood city after a high of 93 degrees. but still mild inland at 73 and concord. falling to 54 tonight. we will see the return of the stratus in the form of a marine layer by tomorrow morning's commute. however inland it will penetrate still the big question mark. i would count on a few clouds at least a good 40 miles inland and you're going to feel the difference. a couple of different areas of low pressure well established to the north of the bay area. high pressure still the key component but as the systems get closer to the coast side going to knock back that ridge and will allow the winds out of the west 10 to 20 to usher in the cooler air mass. so anywhere between 12 and 23 degrees cooler for your friday and the winds will be downright windy at times. up to 30 miles per hour. the pollen reports coming down. temperatures coming down as well. extended forecast calling for partial clearing to mostly cloudy skies over the weekend. a stray shower possible on mom's day. that's your pinpoint forecast. good question is up next. san francisco. a place with natural beauty and a forward-thinking spirit. at bank of america, we've been fueling economic growth here for over a century. today, we're investing in innovations that will define our future. every day, we're working to help set opportunity in motion. from financing a solar project for the milpitas school district to funding the institute at golden gate. because when you're giving, lending, and investing in more communities across the country, more opportunities happen. ♪ [ alarm buzzing ] another victim of frequent flyer red tape. 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[ male announcer ] join rapid rewards and enjoy unlimited reward seats, no blackout dates, and no red tape. ♪ commercial, the date does have the 5th of may cinco de mayo. mostly commercial in the states but it has significance for people on both sides of the border. how important was the battle that commemorates cinco de mayo to the mexican people? that's tonight's good question. by all accounts it should have been a very one-sided battle. the battle of pueblo may 5th, 1862. >> maybe 4 or 5000 mexicans fighting and 7 or 8000 french. so they were outnumbered and they were outgunned. >> the french army marched to the city of pueblo. bent on wiping out a mexican army. but something happened that day. the mexicans fought with such valor they turned the french away and forever changed their country. >> lasted only a few hours and the french actually retreated from that battle and it was a very important and symbolic retreat because that's when the sovereignty of the mexican nation and the unity of the mexican people were affirmed in the battle. >> theresa carare says cinco de mayo is celebrated widely in the u.s. because truthfully the victory was led by a texan. >> the man that led the battle was born in texas. >> he and the fighters turned the french back but that victory would be short lived. napolean ordered 30,000 additional troops into mexico and occupied the country for the next three years. go to cbssf.com. click on "connect" to send me your good questions. 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[ whistle blows ] all right, layups, guys. let's go. in sioux falls, i locked in a rate. coach, you get that house yet? working on it. [ coach ] the appraisal? ...springfield. wherever i was, my citi mortgage consultant had me covered. [ crowd cheering ] and 500 miles from home... [ cheering, cellphone beeps ] ...we finally had a new home.