Reduced width for chambers

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    I’m wondering why we allow a reduction in the trench bottom if chambers are used instead of pipe and rock.What is it about chambers that would treat the effluent even as good as the attached film on the rocks?

    Especially when used with secondary effluent. If secondary is being used because of difficult soil conditions, one would think we need all the surface area we can get. We still have the same amount of effluent to dispose of even if we have treated it better.


    The theory behind reductions in trench bottom if chambers are used is that chambers allow better distribution of effluent due to the fact that there is no gravel ‘masking’ or covering the soil interface. Basically, the argument is that effluent distributed in chamber systems is distributed more evenly because the rocks in a rock and pipe system, mask the ground where the rocks come into contact with the infiltrative surface, thus reducing the infiltration area.

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