Work on a sewer outfall line in Sunnyside and East Carbon has a few kinks that need to be worked out, but the project is continuing to go forward as planned.
During the design process, Warren Monroe, senior construction manager with Jones and DeMille Engineering, said they have run into some surprises along the way. One included a manhole that was buried in East Carbon but he is unsure of how long it has been covered up.
The first section of the outfall line, which is defined as the pipe that carries sewage to its final point of destination or treatment, works well but the second part of the line does not work as hoped. If it is necessary to cut back on the project for any circumstances, Monroe said they would drop off the two parts that are in East Carbon streets. He noted that this would potentially save a tremendous amount of money on asphalt and street repairs. Grant money from the Community Impact Board will go to cover the project which has a price tag of about $475,000.
The old clay pipe that was installed back in the '50s is in horrible shape, Monroe said. There are still questions about the outfall line that will need to be answered so video of the line will be looked at to try and find the answers to any concerns, he said.
Monroe said work will start on the outfall line at an intersection near Bruin Point Elementary where they will work down to the next manhole hole, replacing all of the line in between, so that all of the existing services will be picked up. Monroe said that the school building is connected to the old line, but some of the work has left him with questions. He said they would be getting into contact with the school district for more information about the connection to the line.
From there the line would go through the brush and the trees, he said. While they may need to acquire easements in some areas, Monroe said that doesn't seem like it would be a problem.
In general, he said the plan is to veer north of where the existing line is located. Also there are no plans to have any exposed crossings. The steel casing from one exposed crossing in the area could be salvaged and used by the city again in the future, Monroe stated.
The line would continue near Golf Course Road where the road takes a deep S-turn, Monroe said. The idea currently would be to put a crossing through the road and then stay on the east side of the road. In some parts where the line is located in that area, the landscape is very flat and pipe has previously been exposed which created a need to have dirt piled on top of it to protect it. The line would be moved about 150 feet to the east to a part where the line can be placed deeper and so the wash does not affect it quite as much as it does now.
Another problem that may come up is that some homes in the area are encroaching on one of the properties, which could create a problem with getting a pipeline through there, Monroe said. Dog kennels and horse corrals are located in the area and in one area along the city limits separating East Carbon and Sunnyside, Monroe said he was walking along one property line and found that it was encroaching about 60 feet into another property that is in foreclosure.
Mayor Doug Parsons said that if the outfall line needed to go through the horse corrals, the entire corral would not need to be taken down. Only in the area where the line would need to pass through would anything have to be removed.
Councilwoman Nola Porter questioned if the city didn't do anything about the pipe now, then it could possibly deteriorate and would need to be fixed again in the future. Monroe said that the quality of the pipe in that area could last for a long time to come but he is unsure if the pipe is made up of reinforced concrete.
"It is 35 years old, but there is value in it still," he said.
Whatever is actually done for the project, Monroe said, the cities will need to keep and maintain for the next 30 years.
"If it's difficult to build, then it's difficult to maintain," he explained.
Another area that will be improved is the flow recording equipment that monitors how much effluent is traveling from Sunnyside to East Carbon. The current equipment is outdated and needs to be replaced, Monroe said. New equipment would allow for specific data to be looked at including hourly flows and amounts of effluent passing through the flume over periods of time.
Despite some of the problems he has run into along the way, Monroe said he doesn't see any monumental problems with the project other than acquiring the easements needed for the outfall line pipe.