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  2. Sanitary sewer overflow - Wikipedia

    en.wikipedia.org/wiki/Sanitary_sewer_overflow

    The U.S. Environmental Protection Agency (EPA) estimates that at least 23,000 to 75,000 SSO events occur in the United States each year. [1] EPA estimated that upgrading every municipal treatment and collection system to reduce the frequency of overflow events to no more than once every five years would cost about $88 billion as of 2004. [2]

  3. Northeast Corridor - Wikipedia

    en.wikipedia.org/wiki/Northeast_Corridor

    The Northeast Corridor (NEC) is an electrified railroad line in the Northeast megalopolis of the United States. Owned primarily by Amtrak, it runs from Boston in the north to Washington, D.C., in the south, with major stops in Providence, New Haven, Stamford, New York City, Newark, Trenton, Philadelphia, Wilmington, and Baltimore.

  4. Cost estimate - Wikipedia

    en.wikipedia.org/wiki/Cost_estimate

    A cost estimate is the approximation of the cost of a program, project, or operation. The cost estimate is the product of the cost estimating process. The cost estimate has a single total value and may have identifiable component values. A problem with a cost overrun can be avoided with a credible, reliable, and accurate cost estimate. A cost ...

  5. Cost database - Wikipedia

    en.wikipedia.org/wiki/Cost_database

    The most basic element of a cost estimate and therefore the cost database is the estimate line item or work item. [3] An example is "Concrete, 4000 psi (30 MPa)," which is the description of the item. In the cost database, an item is a row or record in a table (of items) and the description is a column or field for that record.

  6. Cost of Blue Line extension could exceed the Southwest ... - AOL

    www.aol.com/cost-blue-line-extension-could...

    The Blue Line light-rail extension between downtown Minneapolis and Brooklyn Park will cost between $2.9 billion and $3.2 billion, according to a new estimate released Wednesday. "My view is that ...

  7. Sanitary manhole - Wikipedia

    en.wikipedia.org/wiki/Sanitary_manhole

    The causes of overflows may be from excessive infiltration and inflow, or blockages. In case of a blockage, manholes need to be inspected. Typically, the blockage happens between the manhole with an overflow and the next downstream manhole. A downstream manhole with less than expected inlet flow or dry indicates a blockage upstream of it.

  8. Cut and fill - Wikipedia

    en.wikipedia.org/wiki/Cut_and_fill

    In addition to minimising construction cost, other factors influence the placement of cut or filled sections. For example, air pollutants can concentrate in the valleys created by the cut section. Conversely, noise pollution is mitigated by cut sections since an effective blockage of line-of-sight sound propagation is created by the depressed ...

  9. Cost overrun - Wikipedia

    en.wikipedia.org/wiki/Cost_overrun

    The cost overruns constituted 33% of the total expense. The budget for the bridge increased to 150%. The cost overruns exceeded the original budget by 50%. The final example is the most commonly used as it specifically describes the cost overruns exclusively whereas the other two describe the overrun as an aspect of the total expense.

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