A dry well is a subsurface storage facility that receives and temporarily stores stormwater runoff from roofs
of structures. Discharge of this stored runoff from a dry well occurs through infiltration into the
surrounding soils. A dry well may be either a structural chamber and/or an excavated pit filled with
aggregate. Due to the relatively low level of expected pollutants in roof runoff, a dry well cannot be used to
directly comply with the suspended solids and nutrient removal requirements contained in the NJDEP
Stormwater Management Rules at N.J.A.C. 7:8. However, due to its storage capacity, a dry well may be used
to reduce the total stormwater quality design storm runoff volume that a roof would ordinarily discharge to
downstream stormwater management facilities