Sanitary Sewer Study
Sanitary Sewer Study
(OP)
Can anyone refer me a link to a sanitary sewer study for a small municipality.
I've got a prospective retail development in a somewhat rural community and the City manager is asking for a sewer study to verify capacity. Initially I performed analysis on only the sanitary shed the retail property is on (about a hundred acres to a lift station, mixed use, existing/proposed, then through a force main to treatment plant).
The town has no master sewer plan. However the manager is now wanting capacity of the treatment plant analyzed, which includes multiple sewer sheds for existing a future uses.
Wondering if I should try to take on this study or sub it out to some civil guys who've done these before.
I've got a prospective retail development in a somewhat rural community and the City manager is asking for a sewer study to verify capacity. Initially I performed analysis on only the sanitary shed the retail property is on (about a hundred acres to a lift station, mixed use, existing/proposed, then through a force main to treatment plant).
The town has no master sewer plan. However the manager is now wanting capacity of the treatment plant analyzed, which includes multiple sewer sheds for existing a future uses.
Wondering if I should try to take on this study or sub it out to some civil guys who've done these before.





RE: Sanitary Sewer Study
http://www.google.com/url?sa=t&rct=j&q=san...
http://www.google.com/url?sa=t&rct=j&q=san...
http://city.fortbragg.com/pdf/Wastewater_Treatment...
RE: Sanitary Sewer Study
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"Is it the only lesson of history that mankind is unteachable?"
--Winston S. Churchill
RE: Sanitary Sewer Study
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Sanitary Sewer Study
The City manager (new) is trying to figure out what is going on with their sewer system. The record keeping was pretty shoddy over the years, and no-one is 100% sure what is going on with it.
Thanks again.
RE: Sanitary Sewer Study
You may want to assume the records that do exist aren't any good and start with a clean sheet of paper, so to speak. You could recommend metering some strategic manholes to get real-time records of what the flows actually are. You should do both dry-weather and wet-weather metering. In addition, it would be worthwhile to compare these flows with similar near-by communities just to make sure you're in the right ballpark.
BTW, I've run across bad records many times before. The most perplexing was at a state prison I was doing some work at: site design for a new building and then the state added a utility study. The facilities operations staff had kept years worth of meticulous hand-written records of daily natural gas usage, even listing the time they read the three master meters to the nearest 5 minutes. Unfortunately, sometimes the meter reading they recorded was LESS than the day before and sometimes they obviously recorded one meter reading on the form for one of the other meters. Fortunately, I was able to resolve most of these hand typos with a little ingenuity. The biggest problem was that their recorded usage was off by a factor of about 2.5 from the monthly totals recorded by the gas utility company (I can't remember if it was ~2.5x or ~1/2.5x). In addition, the predicted gas usage based on other similar facilities with in the state's prison system was about half-way between the two extremes. On the other hand, the daily records (once I straightened out most of the glitches) clearly showed a reasonable pattern, with lower gas usage on the weekends and holidays when the laundry and shops weren't being used. This was still not resolved with I left the company, so we were never able to complete our model of the gas system.
We were also unable to model the sewer and storm drainage systems as per our contract amendment because the state couldn't find any records of the pipe sizes and inverts and they weren't willing to pay us to survey each manhole (it's a real pain inside a prison). The only utilies for which we were able to complete our evaluations were water distribution and electrical distribution.
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"Is it the only lesson of history that mankind is unteachable?"
--Winston S. Churchill
RE: Sanitary Sewer Study