Preserving a Lifeline
Water & Wastes Digest
December 2007
CONTECH Construction Products, Inc.
Little Falls, Minn., treats storm water runoff to protect the Mississippi River
PDF Version
Funding Rural Water Quality
Water & Wastes Digest
January 2007
By Stephanie vonFeck
CWSRF is a reliable source of funding for water quality projects in rural communities across the U.S.
Managing the Storm
Water & Wastes Digest
July 2006
By Jessica Moorman
Underground detention system helps water facility control storm water and attain LEED certification
Mission in the Rain
Water & Wastes Digest
July 2006
By Tim Gregorski
Waterkeeper Alliance helps to shape storm water programs across the country
Show Buzz StormCon ’06
Water & Wastes Digest
July 2006
By Amy Osgood
Denver welcomes storm water industry professionals
A Commitment to Storm Water Management
Water & Wastes Digest
February 2006
By Amy Osgood
Neal Shapiro, Santa Monica’s urban runoff management coordinator, discusses the city’s approach to storm water management
Preparation for & Response to an Emergency
Water & Wastes Digest
January 2006
By Erik Rakoczy
WWD talks with the deputy director of Houston’s Public Utilities Division about the city’s preparation for and response to Hurricane Rita
Storm Water Watchers
Storm Water Solutions
July 2005
Dana Havlik, P.E., and Peter Mattejat
The SWM Program initially concentrated on the inventory, but current focus has shifted to maintenance and functional retrofits.
Simple Yet Efficient
Storm Water Solutions
July 2005
By Julie A. Schlegel and Jennifer Kerckhoff
The port of Seattle’s $1.1 billion Third Runway
Project involves storm water runoff as one of the project’s most critical environmental issues
Dry Parking
Storm Water Solutions
July 2005
By Kent Hansen, P.E.
The stone recharge bed is the heart of the porous pavement. It provides temporary storage of storm water falling directly on the pavement as well as from other impermeable surfaces.
Storm Water at Center of Project
Storm Water Solutions
July 2005
By Becky Metivier
“If it was good enough for the Park Service at Mammoth Cave, I felt very comfortable using the same technology on our project,” said Tutt.
Fixing the Plumbing
Storm Water Solutions
July 2005
The expansive properties inherent with polymer provides a non-disruptive, cost-effective and long-lasting solution for lifting sunken highways, roads and runways and misaligned bridge approaches or departure slabs.
Pollution Patrol
Water & Wastes Digest
July 2005
By Denise Covelli
In accordance with this program, city officials focused on implementing an urban runoff pollution mitigation system for the Centinela Basin Watershed. They wanted the system to reduce urban runoff pollution—including dry weather flows—entering nearby Ballona Creek, which flows into the Santa Monica Bay.
The Trillion Dollar Maybe
Water & Wastes Digest
April 2005
By Tim Gregorski
Anyway, ASCE’s report is nothing to laugh at, in fact, we should be quite embarrassed as overflowing sewers and aging drinking water facilities have almost become the norm in the U.S.
Flushing Away Waste Problems
Water & Wastes Digest
March 2005
The Monster Airport Receiving Station, installed as part of a multi-terminal upgrade project, was designed and manufactured by JWC Environmental.
Optimizing Stormwater Billing
Water & Wastes Digest
February 2005
By Jeff Blossom
WMD’s customer service department bills all 148,000 property owners in the city and county of Denver for sanitary sewer use and storm drainage collection.
Meter System Withstands Hurricane Ivan
Water & Wastes Digest
February 2005
While the worst hurricane in recent history did wreak havoc on the countryside, the Uriah Water System successfully weathered the storm.
Houston’s Public Utilities’ Responds to Hurricane Rita
WWDmag.com
January-December 2005
By: Erik Rakoczy
Jeff Taylor: “We used this event as a huge training lesson for us. We went to full deployment and implemented our emergency management plan throughout the utility and what we discovered was that our plan is actually pretty good.
Proper Management
Storm Water Solutions
July 2004
By Loretta Hall
Whether motivated by a pragmatic need to comply with regulations or by a desire to protect the environment, highway builders must find effective ways to manage storm water.
Before the Flood
Storm Water Solutions
July 2004
Editorial
...in recent months the staffs of both Roads & Bridges magazine and Water & Wastes Digest have collided to work in concert to produce the Storm Water 2004 supplement.
Applying Available Technologies to Storm Water Flows
Storm Water Solutions
July 2004
By Blake Guillory, P.E., and Douglas Dycus, P.E., CFM
Water and wastewater technologies are increasingly being applied to storm water flows both to satisfy environmental regulations and to increase the availability of reclaimed and potable water resources.
22nd-Century Pipe
Storm Water Solutions
July 2004
Information provided by the American Concrete Pipe Association, Irving, Texas.
To include all existing major infrastructure assets, governments must perform condition assessments every three years.
Financing Storm Water
Storm Water Solutions
July 2004
By Karen Keese
Experience with storm water utilities has shown that they are capable of generating substantial revenues for local storm water management programs at relatively nominal charges.
In Control of Discharge
Storm Water Solutions
July 2004
By Michael F. Bloom, P.E., CFM, DEE
Agencies diligently working to reduce storm water pollutants to the maximum extent practicable (MEP) may find themselves facing numeric effluent limits based on total maximum daily load (TMDL) studies.
No Standing Water
Storm Water Solutions
July 2004
By Suresh L. Hettiarachchi and Anthony J. Luft
Model results indicated that storm sewers lacked the required capacity to adequately convey peak flows during major storms, so there was significant street flooding.
Water Way
Roads & Bridges
March 2004
Jack Schnettler, P.E., Eugene Yerkes, AICP, P.E., and Scott Burch, P.E. – Contributing Authors
The impact of water drainage and land development in the 20th century has been immense, reducing the overall size of the Everglades nearly by half. As a consequence, plant and wildlife populations have been affected dramatically.
The Power to Separate
Water & Wastes Digest
March 2004
By Austin Meyermann
In stormwater applications, gravity separators catch and retain a variety of pollutants, such as sediments, oils, trash and organic debris. These systems intercept surface water runoff and are typically installed underground as part of the storm drain system.
In A Pinch
Water & Wastes Digest
February 2004
David Lavender
Today, there is legislation to eliminate combined sewer overflows. Heavy fines are levied by the EPA against communities that violate this law. The EPA has been reasonable with enforcement because the costs are great--not to mention that it will take time to expand the infrastructure. However, as municipalities and utilities have learned, eliminating overflow events is a must.
Promoting pavements, safety
Roads & Bridges
February 2004
Porous asphalt pavements are becoming increasingly popular because they can provide storm water management systems that promote infiltration, improve water quality and eliminate the need for detention basins.
CMOM is Coming
Water & Wastes Digest
December 2003
Susan McHugh
The U.S. EPA continues to develop proposed National Pollutant Discharge Elimination System (NPDES) permit requirements for capacity, management, operation and maintenance (CMOM) programs for municipal sanitary sewer collection systems. New CMOM programs for municipal sanitary sewer collection systems have been designed to limit the number of sanitary sewer overflows.
Fluid Samplers: Vacuum vs. Peristaltic
Water & Wastes Digest
September 2003
Tim Gregorski
A fluid sampler is essentially a smart pump that takes a liquid sample from a source and deposits it into one or several containers for inspection. Fluid can either be pulled up the intake hose, or pushed from the source. Two types of samplers are typically used, vacuum/compressor and peristaltic. When choosing a sampler, correct analysis of your application is vital.
Brominated Resins
Water Quality Products
July 2003
Ken Korslin, CWS-III, Pentair Water Treatment, Plymouth Products Division
In 1957 The Dow Chemical Corp. addressed the negatives of using bromine by creating a brominated ion exchange resin, which opened up the use of bromine in offshore water treatment applications.2 Today, polybromide resin is used in many offshore water treatment systems. The fact that bromine can be added to water that previously has been chlorinated makes polybromide resin a practical solution to accommodate the multiple sources of water in offshore applications.
PDF Version
Managing Storm Water Runoff With Underground Chambers
Water & Wastes Digest
July 2003
Effectively managing storm water runoff from urban development, while at the same time designing a cost effective solution for the developer, is an increasing challenge for the engineering community.
Unique Solution To Stormwater Problem Combines Recreational Use, Storm Runoff
Water & Wastes Digest
July 2003
Local engineering consultant W.K. Dickson & Co., Inc. (WKD), working with Charlotte Storm Water Services (CSWS), developed an initiative that would attenuate or "slow down" runoff prior to it reaching the overburdened culverts. The results of the WKD plan would also allow funds earmarked for culvert upgrades to be used for projects that would not have been realized otherwise.
E. Coli
Water Quality Products
May 2003
Danielle Duclos
This article provides a general overview of E. coli and drinking water as well as current and emerging monitoring and decontamination technologies.
PDF Version
Chesapeake Seals the Deal
Water Engineering & Management
May 2003
Watertight Storm Sewer Group
The City of Chesapeake, Va. is located in the region called Hampton Roads, the 27th largest metro area in the country with more than 1.5 million residents. With an annual rainfall of approximately 48", its designers must contend with the prospects of determining where 294 billion gallons of water will go. A large share of this rainfall will find its way into the storm sewers. Last year, the City Council appropriated an extra $467,600 for contract cave-in repairs. The City of Chesapeake has recognized this problem and is developing a program to address it.
PDF Version
Montgomery County Works With EPA To Upgrade Infrastructure
Water & Wastes Digest
May 2003
More and more communities face the dual problem of aging infrastructure and overdevelopment due to population growth. Under the Federal Clean Water Act (CWA), EPA is keeping a vigilant eye on the problem. When a community does not meet CWA regulations for sewage overflow, EPA works with that community through long-term loans and expertise to develop a solution. Such is the case in Montgomery County, Ohio.
Chemical Tank Cleaning Eliminates Town's Chlorine Demand
Water & Wastes Digest
May 2003
Ulrich Reimann-Philipp, Ph.D.
Finished water quality often declines in storage facilities. Traditional tank cleaning methods have some effect in removing loose debris and sediment, but leave most of the scale, metal oxide deposits and biological growth in place. Chemical cleaning methods have been widely applied in Europe for years and have become an essential part of preserving water quality in systems which operate with minimal or no chlorine.
Conservation Agency Battles Erosion, Preserves Wetlands with Computer-Aided Design Tools
Water Engineering & Management
April 2003
Chad Mills
In addition to monitoring soil quality and working with landowners to ensure environmentally sensitive farming and grazing practices, the Natural Resources Conservation Service restores wetlands to foster animal and plant life, reinforces stream banks and designs terraces to control flooding. The agency works to prevent runoff of sediments and animal wastes, and it builds dams to control the growth of gullies that have cut into the slope of a hill over the years.
PDF Version
Chlorine Residual Boosting in Distribution Water: Problems with Chlorine Application and Disinfection Byproducts - Part 1
Water Engineering & Management
April 2003
Shin-ichi Tokuno
Previous research on the boosting of chlorine residual1 included how to increase low levels of chlorine disinfectants (free and combined chlorine) in the distribution system. Simple bench tests using a pocket photometer showed that there are no problems in boosting the low level of chlorine residual when boosting the same disinfectant to the water (e.g., free chlorine to free chlorine, or chloramine to chloramine). In the boosted chlorine residual, there is no significant instability in decay or dissipation during the time needed (72 hours) after boosting for the small utility distributors.
Flow Monitoring Springboards City to System-wide Sewer Management Solution
Water & Wastes Digest
April 2003
The forward-looking Metropolitan Sewer District of Greater Cincinnati (MSDGC) saw a dynamic model of most of Cincinnati's collection system as the tool that would support improved sewer system management, including sanitary sewer overflow (SSO) and combined sewer overflow (CSO) control, planning, and operations.
For the birds
Roads & Bridges
April 2003
Greg Smith, Contributing Author
With civil penalties as high as $27,500 per violation per day and possible criminal prosecution, there are several things about the federal Clean Water Act (CWA) that transportation contractors need to know. Besides imposing some very specific requirements on contractors, the CWA also has been the largest obstacle in delaying transportation improvement projects in past years.
Assessing Leakage in Water Supply Networks Using Flowmeters
Water Engineering & Management
March 2003
Richard Furness, PhD., CEng. and ISA Fellow
Flowmeter usage is diverse and central to the entire water cycle control within the industry. The metering process directly or indirectly influences resource management, process control, new works planning, distribution management, leakage detection, financial control and environmental issues.
PDF Version
In the Field: Stormwater Treatment at a New Continental Airport Terminal
Water Engineering & Management
March 2003
Airports potentially can generate enormous amounts of polluted stormwater runoff. In addition to hydrocarbons such as oil and fuel from cars, trucks and planes, winter weather brings added sand and salt to the roadways. Expanding the terminal area for Continental's new Global Gateway at Newark Liberty International Airport in late 2001 included increasing the paved areas around the terminal to accommodate the new taxiways and roadways. The system demonstrates the effectiveness of applying stormwater treatment technology to an already congested area where competition for space is fierce.
A big player for L.A. water
Roads & Bridges
March 2003
The California Department of Transportation (Caltrans) builds and maintains some of the world's busiest highways, including the extensive Southern California freeway system. I-210 is one of these roads. In L.A.'s arid climate, rainfall events are infrequent but often intense, and the runoff is usually packed with all kinds of pollutants and trash. Caltrans engineers began looking at flow-based treatment devices, which accept a flow of water, put it through a treatment process, then release the water to continue its journey downstream.
Arsenic Treatment Options for the Southwest
Water Quality Products
February 2003
Arizona Water Quality Association
While high concentrations of arsenic are found mostly in the Western region of the United States, parts of the Midwest and New England show levels of arsenic
that exceed the newly approved U.S. Environmental Protection Agency (EPA) standard of 10 parts per billion (ppb). Individuals not willing to wait for their water system's compliance with the arsenic standard currently are looking for treatment systems to use in their homes. POU and even point-of-entry (POE) treatment systems are an attractive solution for these individuals. The process should begin with a basic understanding of arsenic contamination and the element's chemistry, a complete water quality analysis of the application-specific water and the knowledge of available technologies.
PDF Version
Lincoln Memorial Avoids Flooding With Stormwater Engineering Software
Water & Wastes Digest
February 2003
The Lincoln Memorial in Washington, D.C., attracts millions of visitors each year and is one the most high profile landmarks in the United States. When it came time to rehabilitate the surrounding stormwater system, StormCAD® was the choice for CH2M Hill and the Eastern Federal Lands Highway Division of the United States Department of Transportation (USDOT).
Heavy Duty Drainage Pumps Rescue Stormwater Flooded Quarry
Water & Wastes Digest
February 2003
Pumping around the clock at 10,000 gpm, two 94hp submersible, portable dewatering pumps manufactured by Pumpex, Inc. of Somerville, N.J., drained turbulent, overflowing stormwater to save a limestone quarry from extensive equipment damages and potential profit loss caused by severe flooding.
Integrated Technology Simplifies Dewatering Process at Two Municipal STPs
Water & Wastes Digest
February 2003
Robert W. Mau, USFilter
The borough of West Mifflin, Penn., is a community located about nine miles southeast of downtown Pittsburgh. For years, the West Mifflin Sanitary Sewer Municipal Authority (WMSSMA) hauled liquid from its New England STP (a 1.2 mgd plant) to the Thompson Run facility (a 4.5 mgd plant), where it was processed on a belt press for dewatering. However, the hauling and associated labor proved very costly, and it was not always easy to coordinate dewatering schedules for both plants.
Additionally in the late 1990s, the WMSSMA faced a requirement to achieve higher cake solids and provide odor control that would respect nearby homes and businesses. Moreover, space constraints and staffing reductions necessitated a simple-to-operate installation.
A New Option in Valve Actuators Strengthens Control of Filtering Operations
Water Engineering & Management
January 2003
Water works engineers are now turning to a new generation of pneumatic valve actuators that are capable of executing the instructions of electronic control systems with the necessary precision to accurately control effluent flow. Surprisingly simple but rugged in construction, this new breed of actuators also is meeting the need to reduce downtime, as some of the first ones to debut in 1981 are still in operation without needing a spare (new) part.
PDF Version
The Challenges of Stormwater Management
Water Engineering & Management
November 2002
Bryan A. Coppes
Stormwater management and its role in the larger challenge of preservation of water quality around the world is an evolving issue. As commercial development continues at record levels, both the quantity of runoff and water quality are issues that need to be looked at carefully. The engineering community is being pushed to design new solutions that keep groundwater and surface water ecology safe and that also protect development economics.
PDF Version
Are You Ready for CMOM?
Operations & Maintenance Supplement
November 2002
CMOM is the acronym for the new Capacity, Management Operation and Maintenance program that soon will be enacted by the U.S. Environmental Protection Agency (EPA). In its simplest form, it has to do with the operation of sanitary sewers to prevent overloading of waste treatment plants and the overflow prevention of sanitary sewage into lakes and streams.
Sprawling Out
Water Engineering & Management
October 2002
Bill Swichtenberg
A report released by American Rivers, the Natural Resources Defense Council and Smart Growth America, reports that paved over land is sending billions of gallons of water into streams and rivers as polluted runoff, rather than into the soil to replenish groundwater. "Paving the Way to Water Shortages: How Sprawl Aggravates Drought" investigated what happens to water supplies when natural areas are replaced by roads, parking lots and buildings.
PDF Version
Approaching Storm: NPDES Phase II Stormwater Rule Deadline Nears
Water Engineering & Management
September 2002
David Woelkers
In December of 1999, the United States Environmental Protection Agency (EPA) published the National Pollutant Discharge Elimination System (NPDES) Phase II Stormwater rule in the Federal Register. The issuance of the rule started a clock that has had municipalities, and stormwater professionals working to understand and evaluate its implications.
PDF Version
Controlling Hospital Grease, Sludge Discharges
Water & Wastes Digest
September 2002
One of the major problem areas in St Petersburg, Florida has two hospitals and a nursing home that discharge to a common sewer line. Historically, the city had to clean this section of the sewer line at least four times a year to avoid blockages and sanitary sewer overflows. Working together, the city and one of the hospitals took action to control the discharge of grease from the hospital's facilities and to reduce the costs of maintenance for both the city and the hospital.
Concord, N.C. - A Proactive Approach to Beginning a CMOM-Based Program
Water Engineering & Management
August 2002
Ron Geiger, PE, and Todd Schuster
The federal government is in the process of establishing a CMOM philosophy for wastewater collection and treatment facilities that hinges on an aggressive, proactive approach, calling for utilities to act like investigative reporters rather than firefighters. Eventually, utility providers will have to follow federal CMOM guidelines, and states may establish similar guidelines.
PDF Version
Stormwater Retrofitting to Protect Drinking Water Reservoirs from the Impacts of Urban Runoff - Part 2
Water Engineering & Management
July 2002
James D. Benson, AICP, and Melissa Beristain
The Kensico Reservoir Stormwater Management Program is designed to reduce fecal coliform bacteria and turbidity delivered to the reservoir by controlling and treating stormwater. The first phases of the project, assessment of the watershed, site selection and the screening and design of stormwater control and treatment facilities, were completed in July 1998. Facility construction began in the spring of 1999 and completed early in 2001. DEP has committed to monitoring and evaluating facility performance and maintaining the facilities.
PDF Version
Measuring Ammonia with Online Analyzers
Water Engineering & Management
July 2002
Tony Palmer, Maureen Ross, P.E. and Stephen G. Nutt, P.E.
Treatment facilities use online ammonia analyzers to monitor and control treatment processes. Controlling ammonia levels can make treatment processes more reliable and cost effective. Currently, there are three major types of online ammonia analyzer technologies available to measure ammonia concentration in a treatment process stream.
PDF Version
Meters - High-accuracy Stormwater, CSO Flow Monitoring
Water & Wastes Digest
July 2002
Ultrasonic transit-time flowmeters can be used to good effect for meeting specific site monitoring and documentation requirements by providing highly accurate and continuous flowrate measurement during dry- and wet-weather conditions.
Arsenic in Drinking Water - Part 4
Water Engineering & Management
June 2002
John T. O’Connor, EngD, P.E.
Editor’s Note: Part 1 of this series provided a timeline for the development of a drinking water standard for arsenic. It also summarized the political and public reactions to the U.S. EPA decision to delay and withdraw the arsenic rule.
Part 2 dealt with human exposure and advances in knowledge concerning human health effects of exposure to arsenic.
Part 3 summarized early data on the occurrence of arsenic in U.S. waters.
PDF Version
Effects of Recharge of Chlorinated State Water Project Waters to Groundwaters in Lancaster Area of California
Water Engineering & Management
April 2002
Hisam A. Baqai, P.E., G.E.
As the population in Southern California increases, more and more demands are being put on the state’s groundwater resources, further exacerbating the overdraft problem. Many communities in Southern California are recharging their aquifers with imported surface waters to combat this problem. The major recharge normally is carried out during wet weather periods when surface water is plentiful. However, recharging these groundwater aquifers with imported surface water can create the potential for water quality degradation. The problem can start when surface water is disinfected with chlorine to prevent biofouling and remove pathogens.
PDF Version
Practical Engineering Combined with Sound Operations Optimizes Phosphorus Removal
Water Engineering & Management
April 2002
Daniel Bolduc and James Fitch, P.E.
Built in the early 1970s, The Oakland, Maine, Wastewater Treatment Facility (WWTF) treats and discharges approximately 300,000 gallons per day (gpd) of wastewater to the Messalonskee Stream. The facility was designed as a conventional activated sludge secondary treatment system to be used principally for BOD and TSS removals. The secondary effluent enters the Messalonskee Stream upstream of several impoundments. This practice has resulted in a steady decline in the water quality of the stream as evidenced by increased algae blooms and other signs of euthophication in impoundments located downstream of the discharge.
PDF Version
Cutting Grease With Ongoing Monitoring and Maintenance
Water Engineering & Management
March 2002
James M. Russell
Grease is clogging sewers nationwide, creating a costly mess to clean up and a dilemma for officials and regulators. Recently, the Wall Street Journal reported that 75 percent of the sewer systems in the United States work at only half capacity because of grease clogs. The cost of keeping sewers open, a cost borne by taxpayers at a local level, is $25 billion per year. The increase in grease in sewer lines is a direct result of the phenomenal growth in dual-income households who choose to eat out or take-out rather than cook at home.
PDF Version
Beach-front drainage
Roads & Bridges
January 2002
CDS technology screens road debris, preserves harbor?s emerald-green water
Washington News
Water Engineering & Management
November 2001
By Robert Gray
Protection of water-supply systems has become a high priority as officials at all levels of government consider possible scenarios for future terrorist attacks on this country.
PDF Version
The Stormwater Challenge
Water Quality Products
February 2001
Greg Gilles, Apyron Technologies, Inc.
Apyron Technologies, Inc., a material synthesis company in Atlanta, and Keystone Environmental, an environmental engineering consulting company in Vancouver, B.C., recently worked together to launch an arsenic remediation project for J.H. Baxter, one of the nation’s leading wood preservation companies.
PDF Version
Trends in Sewer Overflow Management
Water Engineering & Management
February 2001
Hubert Fleming, Ph.D., and David Slack
In this era of environmental stewardship, large cities and counties are faced with increasing pressure not only to deliver safe potable water supplies but also to treat combined and stormwater flows.
PDF Version
Roundtable Discussion: E. coli (Escherichia coli)
Water Quality Products
November 2000
Wendi Hope King
Recent outbreaks of E. coli have brought consumer’s attention to their drinking water. Understanding its source, regulations and prevention will be key to combating this waterborne illness.
Pennsylvania Filtration Plant Helps Meet NPDES Discharge Requirements
Water & Wastes Digest
October 2000
In the early 1990s, the Milford-Trumbauersville Area Sewer Authority in Bucks County, Pennsylvania, recognized the need to upgrade the existing sewage treatment plant. This was necessary to increase capacity and to meet future more stringent requirements set by the Pennsylvania Department of Environmental Protection for Unami Creek.
Pumps Give Stormwater the Shaft
Water Engineering & Management
October 2000
As part of an extensive scheme to further improve bathing water standards in the Brighton and Hove (England) area, a project for the diversion of stormwater is now in full operation.
Updated Sewage System Gives Tourists a Lift
Water Engineering & Management
September 2000
Cecil Coombs, P.E.
Sewage overflow caused by the influx of visitors during tourist season prompted one community to improve its collection and treatment system.
Getting Started in the Bottled Water Business: Source Water Development
Water Quality Products
September 2000
Barbara L. Marteney & Kristin Saltzgiver
This is the second in a series of three bottled water articles. The first article appeared in July; the last will run in October. Your natural spring, well or artesian well source already may be providing you with the "best water you’ve ever tasted" with little effort on your part. However, selling that same water for public consumption puts you under government scrutiny.
City of Hollywood Revises Industrial Pretreatment
Water Engineering & Management
July 2000
Frederick Bloetscher, P.E., Lisa Meday-Futo, Whitifeld R. Van Cott and Robert Fergan, P.E.
The City of Hollywood (Fla.) is located in southeast Broward County, with a land area of approximately 29 square miles. However, the City is a regional wastewater service provider to areas outside the City that are termed "Large Users."
Company Rehabs Trunk Sewer While Rerouting 12 mgd of Sewage Flow
Water Engineering & Management
July 2000
Using a temporary sewage bypass pumping system and its nondisruptive pipe rehabilitation methods, Insituform Technologies, Inc., has rehabilitated a half-mile-long section of trunk sewer buried beneath a Tucson roadway.
SCADA Systems Enhance Reliability of Remote Installations
Water & Wastes Digest
May 2000
A total system replacement is an expensive proposition – especially when some elements still may be working well. The city of Rome, Georgia, faced this dilemma when they needed to upgrade an existing Supervisory Control and Data Acquisition (SCADA) system used in the municipality’s water treatment facilities.
Water Resources Management in Grand Turk - Part 2
Water Engineering & Management
April 2000
Fernando Pérez Monteagudo and María Fernandez Miquel
The first part of this article traced water resources development, its quality and the demand in Grand Turk. It appeared in the March issue.
Water Resources Management in Grand Turk - Part 1
Water Engineering & Management
March 2000
By Fernando PÚrez Monteagudo and Marâa Fernandez Miquel
The Turks and Caicos Islands (TCI) are located 575 miles southeast of Miami and 100 miles north of Hispaniola. The capital, Cockburn Town, is on Grand Turk Island. These islands are expected to experience a real estate and tourism boom1 and water will be a limiting factor in this expected development.
Tucson Trunk Sewer Repaired Without Disrupting Flow
Water & Wastes Digest
March 2000
Using a temporary sewage bypass pumping system and its nondisruptive pipe rehabilitation methods, Insituform Technologies, Inc. of Chesterfield, Missouri, has rehabilitated a half-mile-long section of trunk sewer buried beneath a roadway in Tucson, Arizona.
Aerators Stop Odors in Chicago
Water Engineering & Management
January 2000
Chicago and its surrounding 51 communities cover an area of 375 square miles and have a population of over 3,000,000 people. This metropolis is served by a combined sewer network carrying both raw sewage and stormwater in a single pipe.
Video Drain Inspection Cuts Maintenance Costs
Water & Wastes Digest
July 1999
Knowing the location of underground drains and lines and their condition is important to running an efficient manufacturing operation. To accomplish this, the Ridge Tool Company engineering team uses two relatively new tools for industrial maintenance: electronic locators and video inspection.
Dealing with EPA Flow Monitoring Compliance
Water Engineering & Management
May 1998
Amy Fardo Patsey, E.I.T.
Flow monitoring devices can help prevent raw sewage discharges and bring municipalities into compliance with the Clean Water Act.
Key Design Considerations, Recent Ruling
Water & Wastes Digest
May 1996
Denise Shaffer
Municipalities face an increasing need for repair and rehabilitation of existing wastewater and stormwater systems. This need has arisen as a result of neglect, deterioration, or inadequate hydraulics resulting from development.
Artificial Recharge Enhances Aquifer Capacity
Water Engineering & Management
November 1995
Frank Getchell and Dave Wiley
Aquifer storage and recovery is becoming an important water supply management tool for maintaining or enhancing the water-bearing capacity of an aquifer.
Wastewater Disposal Goes Underground
Water Engineering & Management
February 1995
Craig W. Lichty
A susbsurface percolation system has been adapted to handle the wastewater from a California town.
Evaporation - A Wastewater Treatment Alternative
Water Engineering & Management
September 1994
Tom M. Pankratz
The recovery of valuable materials or separation of hazardous materials from wastewate flows can sometimes be accomplished with evaporation technology.
|