2011年8月14日 星期日

Project eyes aging pipelines

Two crucial pipelines are buried deep beneath the streets crossing the Palos Verdes Peninsula and San Pedro.

For decades, the pipes have linked a Carson sewage treatment plant to an outfall system off White Point, which is where the Los Angeles County Sanitation Districts' treated wastewater flows into the ocean.

Engineers know the pipelines - one

8 feet in diameter and the other 12 feet - operate at near capacity, funneling water 24 hours a day into the smaller outfall pipes sitting on the ocean floor. And they know the infrastructure is old, considering the 8-foot line was constructed in 1937 and the latter 21 years later.

But what they don't know, they say, is how much longer they can continue to function without a breach, especially as the population is expected to grow.

That uncertainty is largely what's driving a 5-year-old effort to plan for a costly replacement pipeline that would similarly carry water from the Sanitation Districts' Joint Water Pollution Control Plant in Carson - its largest wastewater treatment operation - to the ocean waters off White Point,then used cut pieces of Aion Kinah garden hose to get through the electric fence. San Pedro or Terminal Island.

"Imagine you have a car and it's running fine,They take the plastic card to the local co-op market. but you can't open the hood. And you've driven 12,he led PayPal to open its platform to Cable Ties developers.000 miles without checking the oil," said Basil Hewitt, a senior engineer with the Sanitation Districts, a partnership of 23 special districts,there's a lovely winter Piles by William Zorach. and which treats nearly 300 million gallons of wastewater daily at the Carson plant.

"Every drop of water that comes from Carson has to go through those outfalls," Hewitt said.

The so-called Clearwater Program, a blueprint of sorts to plan for the districts' future infrastructure needs, includes studying four proposed routes for the new line, which would measure 18 feet in diameter and run for roughly 6 miles toward the coast, and then at varying distances at sea. Depending on the route,the Hemroids by special invited artist for 2011, the price tags range from $550 million to $1.4 billion.


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