Liberty Environmental

Water Resources

water resourcesAs pressures on water quality and availability have increased over the decades, management of this critical resource has become an extremely important element of land development planning and public safety. Proper and responsible stewardship of water resources in today’s regulatory climate calls for an integrated approach that must include expertise in several fields, including hydrogeology, geochemistry and hydraulics–and a strong familiarity with water supply and waterways regulatory programs.

Hydrologic and Hydraulic Studies

A skilled and focused understanding of a site’s hydrologic and hydraulic setting is now an essential element of most land planning and design projects. From limited stormwater runoff estimates for general permit registrations, to complex unsteady-flow hydraulic modeling projects, Liberty Environmental provides the technical skills to support nearly any water planning or design project. Our professionals include master’s degree and post-graduate experts in water resources engineering and urban hydrology who have the technical knowledge essential to support, understand and rely on modeled data. We also combined our modeling skills with our knowledge of fluvial geomorphology to perform stream restoration projects where reaches of eroded or damaged streams are returned to more stable, natural conditions.

Stormwater Management

Liberty Environmental provides a range of services specifically designed to address site evaluation and best management practice (BMP) design requirements to fulfill the extensive set of water quality and stormwater volume control requirements established by Phase II of the National Pollutant Discharge Elimination System (NPDES) program. These include preliminary site-wide feasibility studies, surface and subsurface infiltration testing, BMP selection and design, and stormwater permitting. Our integrated approach relies on broad technical expertise that customers find–particularly in the site evaluation phase–allows for a smoother permitting process with fewer regulatory review comments or design conflicts.

Municipal separate storm sewer system (MS4) permitting and compliance is a challenge facing many municipalities, particularly those that are located in impaired watersheds. From permit applications, to sampling and reporting, to auditing, Liberty Environmental assists municipalities with all aspects of MS4 permit compliance. For municipalities in impaired watersheds, Liberty Environmental evaluates different pollutant control measures, including technical feasibility and cost, and prepares Pollutant Reduction Plans to achieve the required pollutant reductions required by State and Federal authorities.

Public Water Supply

Groundwater and surface water contamination, and the increasing demand for safe, plentiful drinking and irrigation water supplies have placed great importance on the need for expert water supply planning. Our experts provide customers with the needed technical and planning skills to responsibly utilize this precious resource. We assist our clients in all aspects of the water supply permitting and design process–from siting and installing new source wells or rehabilitating existing wells, to designing water supply treatment systems. Liberty Environmental also offers related hydrogeological services such as delineating wellhead protection areas, preparing wellhead protection management plans, performing hydrogeologic impact studies, conducting sinkhole evaluations and evaluating stormwater infiltration impacts.

Groundwater Restoration in West Chester, PA

During the delivery of product to a 6,000-gallon unleaded gasoline underground storage tank (UST) at Westtown School in Chester County, Pennsylvania, a hose ruptured resulting in a release of gasoline to the ground surface. The gasoline flowed across a paved area and into a stormwater conveyance pipe, which discharged into a grass swale.

Weaver Stream Restoration in Sinking Spring, PA

The widening of Route 222 in Berks County from 2 to 4 lanes resulted in excess stormwater runoff and rapid erosion of a small Stream. Liberty designed a new stream channel to repair the erosion and incorporated natural stream channel design features.