swann park opened in 1904 and was named after former mayor thomas swann. >> weather forecast, with meteorologist john collins. >> we'll look at the doppler radar and sprinkles in baltimore county and here's the city and beltway on the radar and a little darker green shades to the west. once you get west of 29 and howard county and down in montgomery county, you get rain showers. and parts of frederick county east of frederick, southward, and toward pullsville and then down to the west of the district. there's no thunder and lightning in this, it is just rain shower activity. this is the heaviest where it is yellow and lighter rain shower in howard county. few sprinkles west of that. this is moving eastward and once it comes in, we'll have rain chances on again and off again for the next day or two. let's look at what happened today. we got a fair share of sun and the temperatures went beyond what we thought they would. there was sunshine mixed in. the airport and inner harbour made it to 79. and 66 and 67 and the respective lows and in rain measured yet there. it is just west. typically this tim

. >> reporter: ladon swann is the director of the auburn marine research center. do you think that barricade is adequate to keep oil out of this area? >> it can't hurt. i think if you look at the data, the best it has ever been done, in terms of recovery-- 10%. if it helps achieve a 10% or greater recovery rate, then that is great. mother nature will do what it does. >> reporter: swann says if the oyster beds are devastated, the project might be able to help fishermen and restore the natural oyster reefs more quickly. >> we can help produce a product for the market. we can help the reefs. we can spawn those in a hatchery on dauphin island, and then we can plant those in the reefs. >> reporter: walton says the entire regional economy is teetering on a precipice. >> i think you look at a lot of we have guys already put out of work because of those closures, in effect. that has this cascading effect. you drive through bayou labatre, and you see trucks in parking lots who are not delivering seafood. the guys are not selling ice, the restaurants are selling seafood but

. >>> it's taken three years and $6 million and now after cleaning up, swann park is once again open.e schuh reports how the toxins were scraped away. reporter: for years the poison arsenic lay in the ground. it contaminated the near-by park. >> this was a chemical plant there, but when they built i-95 the plant went away, but the chemicals remained and seeped into the soil of the park. >> no one knew. reporter: for 30 years children played on the ground. >> reggie jackson played here. it was the place to play. >> reporter: three years ago the company that bought the company began to remove the arsenic and rebill. today is opening day. >> honeywell is the company that paid for cleanup. >> restoring the park to put it in a better place than when we found it. >> they made the investment and got it back up to par, it looks good. reporter: she came here as a child. >> i loved. i couldn't believe i was here. reporter: that's what the state told the polluters, clean it up and give it back to the city and now after three years, the city got the call. arsenic almost killed this public park bu