The proposed revisions to the stormwater NPDES generic permit include provisions authorizing construction dewatering for non-contaminated ground water, with appropriate control measures for non-stormwater discharge. Revisions to the dewatering permit will provide that sites covered under the CGP that also have dewatering operations do not need separate coverage under the industrial wastewater generic permits. The combined revisions will have the effect of allowing sites covered by the CGP to conduct dewatering operations without the need to obtain a separate NPDES permit under the Industrial Wastewater Program.