The NPDES General Permit says, "The ES&PC Plan shall limit the amount of disturbed area to no greater than 50 acres at any one time without prior written authorization from the appropriate EPD District Office."  

 

If the EPD District Office approves a request to disturb 50 acres or more at any one time, the Plan must include at least four (4) of the best management practices listed in Part III.C.2 of this permit. In the Common Development Permit, each individual permittee (i.e., primary, secondary or tertiary) can disturb no more than 50 acres at any one time, and no more than 50 contiguous acres total at any one time, without prior authorization.
 

Please contact me directly at 678-469-5120 with your questions or suggestions.