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RANNEY® PROJECTS
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RECENT COLLECTOR PROJECTS
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Ranney® Collector Wells has long had the reputation for designing
and building some of the largest wells in the world. Typical of these large wells are recently built collector
wells for St. Joseph, Missouri; Lake Havasu City, Arizona; The Louisville Water Company, Louisville, Kentucky;
the Board of Public Utilities in Kansas City, Kansas and the City of Prince George, British Columbia in Canada.
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Ranney® Collector Well - Lake Havasu City, AZ
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Lake Havasu City, Arizona
Lake Havasu City has relied on ground water to meet the drinking water needs of their community. Historically,
the quality of that water has been poor, with high concentrations of iron and manganese. As part of major
improvements to the drinking water system, a new Ranney® Collector Well
was constructed and tested. The well
was constructed on the shores of Lake Havasu to take advantage of the infiltration of high quality surface
water.
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The Ranney® Well is constructed of a 16 foot inside by 21 foot outside
diameter reinforced concrete caisson,
104 feet deep. Over 1750 feet of wire-wrapped stainless steel well screen was installed at the base of the
well, in 14 horizontal laterals. After development, the well was test pumped at 17,500 gallons per minute
and had 31 feet of measured drawdown.
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St. Joseph, Missouri
After the massive flooding on the Missouri and Mississippi Rivers in 1994, the Missouri American Water
Company implemented a series of major improvements to their St. Joseph water supply system. Included in
those improvments were a series of Layne vertical wells and a Ranney®
Collector Well.
The Ranney® Well is constructed of a 16 foot inside by 20 foot outside
diameter reinforced concrete caisson,
118 feet deep. The well has over 1300 feet of wire-wrapped stainless steel well screen, installed in seven
horizontal laterals. The well was test pumped at 10,500 gallons per minute and had 11 feet of measured
drawdown.
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Ranney® Collector Well - St. Joseph, MO
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Louisville Water Company, Louisville, Kentucky
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Ranney® Collector Well - Louisville, KY
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The Louisville Water Company has been investigating the benefits of developing a riverbank filtration supply
since the 1940's as a possible replacement to their traditional river intake system to improve the overall
source water quality. Following extensive research into reducing disinfection byproduct (DBP) precursors and
pathogen reduction, a demonstration collector well was constructed in 1999 to provide a supply of up to 20 mgd
into one of the river water treatment plants. This well has been successful at providing a high quality raw
water supply, and consequently four more Ranney® Collector Wells
are being installed as part of this system.
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The Ranney® Well is constructed of a 16 foot inside diameter
reinforced concrete caisson, 100 feet deep in the alluvium adjacent to the Ohio River. Over 1,560 feet of
12-inch diameter wire-wrapped stainless steel well screen was installed near the base of the well,
distributed in 7 horizontal laterals. After development, the well was test pumped at 13,470 gallons per
minute (19.4 mgd).
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Board of Public Utilities, Kansas City, Kansas
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The Ranney® Well is constructed of a 20 foot inside diameter
reinforced concrete caisson, 120 feet deep in the alluvium adjacent to the Misouri River. Over 2,450 feet
of 12-inch diameter wire-wrapped stainless steel well screen was installed near the base of the well,
distributed in 14 horizontal laterals. After development, the well was test pumped at about 17,400 gallons
per minute (25 mgd). This well has been operated at rates over 50 mgd.
The Board of Public Utilities desired a new water supply of 25 million gallons per day (mgd) as part of a
new water supply. This supply needed to be
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Ranney® Collector Well - Kansas City, KS
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pumped at rates up to 40 mgd for short periods during the peak
summer months. An extensive hydrogeological investigation was conducted in the alluvial aquifer alongside
the Missouri River to site and design a riverbank filtration system to provide a good quality source water.
Based upon an engineering evaluation, a radial collector well was selected over a series of vertical wells
or a new surface water intake, and the Ranney® Collector well was
constructed in 1997.
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Ranney® Collector Well - City of Prince George,
B.C., Canada
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City of Prince George, B.C., Canada
The City of Prince George installed a fourth radial collector well in their water system to provide an
improved water supply to selected zones within their distribution system. The Fishtrap Island Collector
Well was constructed in 2005 in alluvial deposits along the Nechako River to produce a minimum of 100
ML/day (15,316 IGM).
The Ranney® Well is constructed of a 4.88 metres (16 foot) inside
diameter reinforced concrete caisson, 33 metres (102 feet) deep in the alluvial aquifer. Over 457 metres
(1500 feet) of 305 mm
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(12-inch) diameter wire-wrapped stainless steel well screen was installed near the
base of the well, distributed in 10 horizontal laterals. After development, the well was test pumped at
100 ML/day, and the well capacity was calculated to be in excess of 118 ML/d (25 MIGD/18,060 IGM).
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RANNEY® CONSTRUCTION PROJECTS
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HORIZONTAL COLLECTOR WELLS
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Olathe, Kansas
30 MGD Wellfield Expansion & Replacement
Solution: Ranney®
installed four collector wells as part of a program to expand their water supply
system to meet contiuned growth in their district. These wells were installed into alluvial aquifer
deposits along the Kansas River under a design-build contract to accelerate the construction process.
Industrial Facility, Missouri
Year-Round Reliable Water Supply System
Solution: Ranney®
installed a combination collector well - surface water intake system to ensure that the
plant water supply needs could be met under a variety of river flow conditions in the Mississippi River.
The addition of an intake line and intake screen allows the unit to more than double it's capacity under
low river conditions when the saturated thickness of the aquifer is reduced, effectively limiting
groundwater yields. This is the first installation of this type in the United States.
Albuquerque, New Mexico
10 MGD Demonstration Irrigation Project
Solution: Ranney®
installed a radial collector well along the banks of the Rio Grande to produce a supply of 5
mgd as part of the Alameda Reuse Diversion Facilities project. An infiltration gallery was
also installed underneath the river by others as part of this project.
Power Plant, Indiana
Collector Well Simplified Water Supply Permitting
Solution: Ranney®
installed a 7 MGD radial collector well to provide a cooling water make-up supply for a
new combined-cycle merchant plant, in lieu of a complicated surface water intake system that would have
included numerous small-diameter intake screens spread over a significant portion of the riverbed. Since
the collector well design did not involve any construction in the river, permitting was simplified.
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COLLECTOR WELLS FOR FILTERED SEAWATER
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Industrial Site, Mexico
Seawater Collector Wells Deliver Filtered Seawater
Solution: Ranney®
installed three beach seawater collector wells along the Pacific Ocean to develop a filtered
seawater supply for desalination in a refinery. Each collector well is capable of producing at least 4 MGD
of filtered seawater, with extremely low turbidites and SDI levels maintained below 2. The lateral well
screens were installed with an artificial gravel-pack filter.
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SURFACE WATER INTAKES
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Moon Township, Pennsylvania
Surface Water Intake Increases Supply
Solution: Ranney®
installed a fixed-screen surface water intake to expand the local drinking water supply. The
intake included an on-shore pumping station and an intake line installed using trenchless technology to
minimize in-river impacts. This intake system supplemented the infiltrated water supply provided by a
radial collector well installed in 1965.
Batesville, Mississippi
Siphon Intake for Combined-Cycle Power Plant
Solution: Ranney®
installed a siphon-type intake to provide 7500 gpm of make-up water for an 837 MW
combined-cycle generating facility. The siphon intake was selected due to the extreme fluctuations of the
Army Corps of Engineers operated lake. By installing a fixed screen system, the system met the 316b rule
requirements.
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CONSULTING PROJECTS
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Delaware, Ohio
Develop Additional Ground Water Supply for Municipal Drinking Water.
Solution: To supplement their surface water supply, the City
contracted with Ranney® to evaluate the
development of an additional ground water source. The limestone carbonate rock was determined to be
acceptable for this purpose. This project involved preparation of specifications, residential well survey
and monitoring, drilling supervision, performance testing and completion reports. Three vertical rock
wells were installed, each capable of 2 MGD. After the initial testing of the production wells,
Ranney® conducted an extensive evaluation of potential quality and
quantity impacts to nearby domestic wells. Ranney® also conducted
a wellhead protection area delineation for the City's wellfields, and has assisted with the development
of a water level monitoring process.
Le-Ax Water District
Ensuring Reliable Supply for Rural Water System.
Solution: The Le-Ax Water District relies on a single collector well
to supply all the water required to Le Axe's Customers in Southern Ohio. Le-Ax contracted with
Ranney® for a monitoring and record-keeping program
for their collector well to track its performance and allow planning for maintenance. On a bimonthly basis,
a professional Geologist measuers pumping rates, drawdowns, river elevation, water temperature and plots the
data to develop an operation trend of the collector well. Ranney® also
conducted a wellhead protection area delineation for the collector well and a potential pollution source
inventory of the surrounding area.
El Paso, Texas
Water agency needed to develop new 80 mgd ground water supply.
Solution: IWC assisted Boyle Engineers to evaluate alluvial
aquifer along Rio Grande using advanced sonic
drilling techniques.
Los Alamos County, New Mexico
Evaluate Ways to Utilize 1.1 MGD San Juan/Chama Diversion Surface Water Allocation
Solution: International Water Consultants, Inc. (IWC) was
subcontracted by Boyle Engineering Corporation to evaluate shallow alluvial deposits along the Rio Grande
in White Rock Canyon. IWC conducted a site reconnaissance, surface geophysics, test drilling and aquifer
testing to evaluate the feasibility of collector wells or infiltration galleries. Access to the testing
sites was gained using river rafts, an ATV and helicopters. A portable modular core rig was utilized for
the test drilling.
St. Louis, Missouri
Develop an Alternative Water Supply of up to 200 MGD.
Solution: IWC assisted the Black & Veatch team with a comprehensive
evaluation for developing up to 200 MGD for the City of St. Louis using RBF systems from the Columbia Bottom
area (confluence of the Missouri and Mississippi Rivers). Study involved test borings, interval testing,
detailing aquifer testing and water quality considerations. Systems using vertical wells, angle wells and
horizontal collector wells were evaluated, with the collector well systems highest rated.
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Ranney® Collector Wells,
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a Layne Christensen Technology
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6360 Huntley Road
Columbus, OH 43229
Toll Free: 1-877-4-Ranney (1-877-472-6639)
Office: 614.888.6263
Fax: 614.888.9208
E-mail: ranney@collectorwells.com
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