Urban Water Quality Devices 1

[stormy]

Does anyone have information on the best way to treat urban surface runoff from small redevelopment projects? Ideally the design is easy and the installation is fast, without disrupting much existing infrastructure.

 

[landdev]

We've been trying to deal with the same type of problem. On a recent project we were expanding a church parking lot. The additional paving (approx .55 ac) required us to deal with stormwater quality based on our City's ordinance. The general guideline they have is to provide treatment of the first flush (1/2" rainfall over site) which has been done in most cases in the stormwater detention basin bottom by designing a gravel filter outlet similar to a septic drain field that meters out the 1/2" volume over a 24 hr period. On the church project, we convinced the city that a detention basin was not warranted, however could not convince them the water quality requirement should be waived. We ended up specifying catch basin inserts in all the catch basins that were in paved areas. The inserts are manufactured by Suntree Isles, Inc. out of Cape Canaveral, FL. 407-799-0001. The inserts can be used in new or existing catch basins and have an oil absorbent pad that is replacable. We haven't seen one in operation yet but it seems to have satisfied the city for water quality purposes. On another project we are trying to incorporate grassed swales in our longitudinal parking isles to filter stormwater prior to getting into the drain system. <br>
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Hope this is of some help

 

[Cleigh]

Have you ever heard of a &quot;Storm Septic&quot;, or something of that name.&nbsp;&nbsp;A Canadian (Mr. Monteith) invented it.&nbsp;&nbsp;They are used instead of storm management pond's.&nbsp;&nbsp;It is great for the enviroment because it seperate's different liquid's.&nbsp;&nbsp;(Oil, run off lawn chemicals, ect.)&nbsp;&nbsp;The only problem is that when it comes time to clean these it's considered toxic waste because of the oil that is found in the sludge.&nbsp;&nbsp;I'm not too sure on the details because only four of these are in our city.&nbsp;&nbsp;There is a small artical on this item in OACETT (Ontario Ass. of Certified Engineers, Technologist.

 

[mpl]

National Enviromental Systems Inc. has a solution for your stormwater problems. They offer solutions that are practical and economical. They have developed the CrystalStreamTM technology, an active limited-space BMP device to separate debris, sediment, and petroleum products from storm water. CrystalStreamTM is a patent-pending active, limited-space BMP device. The device cleans three categories of contaminants from storm water:
Floatables, Sediment, Petrolium Products
Most importantly, the device treats over 99% of storm water inflow, exceeding all known first-flush regulations.
They do not build a one-size-fits-all unit. The CrystalStreamTM technology is scalable, so you need not order a larger unit than required. Pricing for a unit capable of handling flows up to 4 cfs is approximately less than $8,000.

If you need more info, please email me at the following addresses mikelarussa@cajun.net
thank you

 

[stormy]

You may want to check

http://www.aquashieldinc.com