Asset Inspections Are Optimal Tool For Maintenance And Capital Improvement
Infrastructure asset inspection process is a tool that identifies deficiencies, creates backlog, establishes proactive maintenance, and monitors life cycles; as well as assists agencies in identifying projects for their Capital Improvement Program (CIP). These inspections can provide both a short-term benefit through work identification for repair and maintenance efforts and a long-term benefit of project identification of new capital improvements and enhancement. By Michael Garcia, PSM, Program Manager II , Seminole County Public Works and Chandra Greiner, CPM, Consultant, LA Consulting
Financing Stormwater Retrofits In Philadelphia And Beyond
To reduce the environmental and public health threats posed by polluted stormwater and to comply with the Clean Water Act, cities nationwide are making significant investments to reduce stormwater runoff. By Alisa Valderrama and Larry Levine, Natural Resources Defense Council
Delta Drainage And Irrigation System: Complex Multifunction Hydraulic System Analysis
Delta, British Columbia is located in the Fraser River delta on the shores of the Pacific Ocean, just south of the City of Vancouver.
Underground Treatment Of Airport Deicing Fluid
While keeping air flight safe, airports and airlines are also obliged to clean up after themselves and protect nearby streams and water bodies. And due to increasing chemical usage and looming regulations, some airports will need to invest in significant infrastructure upgrades to capture and treat stormwater contaminated with deicing fluid. By Scott Wallace, P.E., President, Naturally Wallace Consulting and Mark Liner, PE, Senior Engineer, Naturally Wallace Consulting
White Paper: Passive Filter - Sustainable BMP For Permanent Stormwater Treatment Of Heavy Metals, Nutrients, Hydrocarbons And Sediment
Passive filtration provides a sustainable alternative to classical drainage concepts for source control of hydrocarbons, heavy metals, and nutrients that endanger our water bodies. In urban areas with high building density, traditional drainage concepts like wetlands are not available and the concept of decentralized treatment facilities that can be housed in catch basin structures are a viable option for treatment of pollutants. By Royal Environmental Systems, Inc.
Application Note: Employing Best Water Quality Monitoring Practices To Reduce Runoff During Construction
Under proposed EPA stormwater runoff guidelines, construction site operators will be required to actively monitor or sample stormwater discharges daily. The enhanced effluent rules take effect in August 2011 for construction sites that disturb 20 or more acres and February 2014 for sites that disturb 10 or more acres, and they may stipulate a strict numerical limit of less than 280 NTU for average turbidity (sediment in water) on any day. By YSI
Fix-A-Flood (Before It Happens): Optimized Overflow Devices Increase Retention Capacity
Overflow events occur during wet weather when the collection system reaches its maximum storage capacity. By Giangranco Maragno, P. Eng. And Martin Couture, P. Eng., Veolia Water Technologies Canada
HiPOx Case Study: Wichita ASR Project, KS
The City of Wichita’s Aquifer Storage Recovery (ASR) Project involves seasonal operation of a water treatment plant to treat storm water from the Little Arkansas River. By APTwater, Inc.
Stormwater Management - Cog Moors Wastewater Treatment Works, South Wales (Case Study)
Wales is said to be wetter throughout the year than Northern Ireland and England, and is known for intense rainfall activity. Therefore, effectively treating and managing the country’s substantial stormwater runoff is of utmost importance. It’s also subject to increased scrutiny from governing bodies.
White Paper: Stormwater Retention For A Modular Green Roof Using Energy Balance Data
New York City stormwater is a major cause of water pollution in the harbor and estuaries. This is due to the vast areas of impervious surfaces (e.g., rooftops, pavements, sidewalks) that rapidly shunt runoff into the combined sewage overflow (CSO) system.