solutions. Print This Page Water Resouces services we offer: Hydrologic Modeling Hydrogeologic Assessments Groundwater Modeling Brownfield Remediation Wetlands Services Stream... Bank Remediation Design Monitoring Floodplain Studies Stormwater Modeling Permitting and Mitigation Planning Wildlife and Habitat Planning Plume Dispersion Modeling NEPA MS4 Services... National Pullutant Discharge Elimination Systems (NPDES) Permitting Program Management Inventory Funding Studies BMP Design Infrastructure Surveys/Condition Analysis Subsurface...

Stormwater management retrofitting BMP design, implementation, and evaluation Hydrology and hydraulics Numeric sizing programs and designs On site monitoring, testing, and reporting Storm... flows. Thus, the impact of the Phase II rule will be far-reaching. Along with the automatically designated MS4s, the Phase II rule also requires the NPDES Permitting Authority... on the quality of receiving waters. Permitting authorities may also include municipalities as designated MS4s with populations as low as 1,000. Finally, MS4 operators...