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NC-2009 SSp1:Construction Activity Pollution Prevention

Perimeter Controls

Good day I want to consult in relation to a project in a lot of 10 hectares (about 25 acres) with a perimeter of 1377 m (about 4500 ft). One of the longer sides of the perimeter has input waters from higher ground. Altimetry due to the other three sides, is output water from the batch of the project. You may meet the requirement of the Plan taking into account the following edge care: 1. compacted earth dike on the side of greater height, to prevent entry of water from other lots, 2. Perimeter Control with silt fence on the other three sides Or they need to have more perimeter control measures? I clarify that a third of the property remain undisturbed, so it may not take that edge protection or equal silt fence should be placed? The area where there is no disturbance is 130 feet wide and 240 m long (426 x 787 feet). Thanks in advance for the help

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Profile picture for user Mike Dee
Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Fri, 10/31/2014 - 02:54

A site of that size probably needs 1 or more sed basins. But it's really impossible to answer this question without seeing the plan. Your E&S design should be done by a competent civil engineer or CPESC.

Tue, 11/11/2014 - 17:45

The schematic plan can be found at the following link: https://www.dropbox.com/s/559tjbe2xmjl36h/Planta%20General%20SSp.1%20consulta.pdf?dl=0. As you can see there is an area a third of the land that remains unaffected, that is why I consult if possible to ignore perimeter control measures in that area, and that area will not be considered for sizing the sedimentation volume needed. Thanks for the help!

Wed, 01/14/2015 - 16:56

Hi Gabriela, We have a similar case, were you able to ignore the installation of a silt fence in the undisturbed side of the property? Thanks!
Profile picture for user Mike Dee
Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Wed, 01/14/2015 - 17:18

Sorry for the late reply, I must have missed this. But in the drawing above, you don't need any E&S controls on the undisturbed side, because it is "undisturbed" and presumably permanently stabilized with grass or growy things. Just put your BMPs on the downhill side of the disturbed area, whether this is silt fence, filter socks, sediment basins/traps, etc.

Wed, 01/14/2015 - 18:17

Hi Alicia, I still didn´t realize the Plan because the project was delayed in its schedule. Hi Michael, thank you for your answer, it will be very usefull to me.
Profile picture for user Mike Dee
Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Wed, 01/14/2015 - 19:23

Now keep in mind, this goes for future readers, my reply only pertains to that drawing above, and similar site conditions. If that site drained east-west, with the undisturbed area draining through the disturbed, you would need to either divert this clean water around the site, or account for it in the calcs for your proposed BMP

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