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761:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Citation for failure to file Annual Report.
		Date Created:	09 26 2006
		Agency ID:	06-0326
		ISL ID:	000000000780 Original UID: 830 FIRST WORD: Order

762:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Citation for failure to file Annual Report.
		Date Created:	09 26 2006
		Agency ID:	06-0328
		ISL ID:	000000000781 Original UID: 832 FIRST WORD: Order

763:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Citation for failure to file Annual Report.
		Date Created:	09 26 2006
		Agency ID:	06-0329
		ISL ID:	000000000782 Original UID: 833 FIRST WORD: Order

764:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Application for Certificates of local authority to operate as a reseller and facilities-based carrier of telecommunications services in the State of Illinois.
		Date Created:	09 26 2006
		Agency ID:	06-0478
		ISL ID:	000000000783 Original UID: 835 FIRST WORD: Order

765:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Citation for failure to maintain corporate status.
		Date Created:	09 26 2006
		Agency ID:	06-0489
		ISL ID:	000000000784 Original UID: 843 FIRST WORD: Order

766:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Joint Petition for Approval of a Negotiated Interconnection Agreement dated August 8, 2006, pursuant to 47 U.S.C. Section 252.
		Date Created:	09 26 2006
		Agency ID:	06-0574
		ISL ID:	000000000785 Original UID: 846 FIRST WORD: Order

767:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Joint Petition for Approval of a the First Amendment to the Interconnection Agreement dated August 10, 2006, pursuant to 47 U.S.C. Section 252.
		Date Created:	09 26 2006
		Agency ID:	06-0575
		ISL ID:	000000000786 Original UID: 847 FIRST WORD: Order

768:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Application to Amend Certificate of Service Authority In Order to Provide Single-Billing Service to Customers in the AmerenCILCO, AmerenCIPS, and AmerenIP Service Territories Pursuant to Code Part 451.510.
		Date Created:	09 26 2006
		Agency ID:	06-0601
		ISL ID:	000000000787 Original UID: 850 FIRST WORD: Order

769:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Citation for failure to maintain corporate status.
		Date Created:	09 26 2006
		Agency ID:	06-0638
		ISL ID:	000000000788 Original UID: 851 FIRST WORD: Order

770:		Title:	Order
		Volume/Number:
		Issuing Agency:
		Description:	Citation for failure to maintain corporate status.
		Date Created:	09 26 2006
		Agency ID:	06-0639
		ISL ID:	000000000789 Original UID: 852 FIRST WORD: Order

771:		Title:	Considerations in water use planning for the Fox River
		Volume/Number:	1995
		Issuing Agency:
		Description:	The objectives of this study were to 1) identify locations along the Fox River wherereductions in the flow rate and/or river water quality are likely to degrade any use of water along the river, 2) assess the prevailing water quality and ecology of a critical reach of the river, e.g., from one dam to the other, and 3) estimate and evaluate water supply and water quality conditions at present and in the future.
		Date Created:	9 24 2004
		Agency ID:	CR-586
		ISL ID:	000000000790 Original UID: 999999992166 FIRST WORD: Considerations

772:		Title:	Groundwater discharge to Illinois streams
		Volume/Number:	1980
		Issuing Agency:
		Description:	Driven by the force of gravity, water continually moves between the land surface and the subsurface environments. Our knowledge of this process is limited by the large number of interdependent factors involved. A better understanding of these factors and their effects is needed if we are to effectively manage our water resources in a comprehensive manner.This study addresses the problem by quantifying the groundwater contributionto streamflow over a large range of discharges for 78 watersheds in Illinois.Quantification is the first step toward understanding the dynamics of thiscomplex phenomenon.
		Date Created:	9 24 2004
		Agency ID:	CR-246
		ISL ID:	000000000791 Original UID: 999999993278 FIRST WORD: Groundwater

773:		Title:	The effects of Illinois River traffic on water and sediment input to a side channel
		Volume/Number:	1981
		Issuing Agency:
		Description:	The effects of river traffic on water and sediment inputs into a side channel were studied in an 18-month research project. McEver's Island, located in the Illinois River, was selected as the study site. The objectives of the research project were: 1) to collect data on factors such as suspended sediment load, water discharge, and types of sediment at a reach of a side channel which directly connects with the main river; and 2) to attempt to estimate the rate of movement of the sediment and water into a side channel in different river stages.Observations indicated that the wave height, velocity, and suspendedsediment concentration showed some significant changes during the passagesof barges. The amounts of water and sediment inputs into side channelsare relatively small compared with the background main channel dischargesand sediment loads.
		Date Created:	9 24 2004
		Agency ID:	CR-270
		ISL ID:	000000000792 Original UID: 999999993284 FIRST WORD: The

774:		Title:	Peoria Lake sediment investigation
		Volume/Number:	1985
		Issuing Agency:
		Description:	Realizing the importance of Peoria Lake and the seriousness of the sedimentation problem of the lake, the Illinois State Water Survey initiatedthe Peoria Lake Sediment Investigation under the sponsorship of the U.S. ArmyCorps of Engineers, Rock Island District.The main objectives of the study were to:- Determine the sedimentation rate of the lake- Identify the sources of sediment to the lake and their relativequantities- Develop a sediment budget- Investigate the quality of the sediment in the lake- Investigate a range of alternative solutions to the sedimentationproblem of the lake and make recommendationsThis project will address alternative solutions to the problem of sedimentation in Peoria Lake.
		Date Created:	9 24 2004
		Agency ID:	CR-371
		ISL ID:	000000000793 Original UID: 999999993408 FIRST WORD: Peoria

775:		Title:	Effect of Stratton Dam operation on flood control along the Fox River and Fox Chain of Lakes
		Volume/Number:	1992
		Issuing Agency:
		Description:	The purpose of this study was to use models to simulate the effect of the Stratton Dam operation, and possible structural modifications such as the addition of Foster gates, on flood stages and discharges in the Fox River and the Fox Chain of Lakes. The hydraulics and hydrology of Stratton Dam, the Fox River, and the Chain of Lakes were simulated for a wide range of historical flooding conditions and potential operation schemes. Responses for many different major flood conditions were analyzed, but two particular aspects of flood control were given special attention: 1) increasing outflow from the lakes in anticipation of a major flood, and 2) facilitating the flow release of the lakes by adding Foster gates at Stratton Dam and downstream at Algonquin Dam. This information will provide the IDOT-DWR with information for implementing possible modifications to the Stratton Dam operation during flood conditions.
		Date Created:	9 24 2004
		Agency ID:	CR-533
		ISL ID:	000000000794 Original UID: 999999993570 FIRST WORD: Effect

776:		Title:	Retention of zinc, cadmium, copper, and lead by geologic materials
		Volume/Number:	1982
		Issuing Agency:
		Description:	The vertical and horizontal migration patterns of zinc, cadmium, copper, and lead through the soil and shallow aquifer systems at two secondary zinc smelters were defined by use of soil coring and monitoring well techniques. The vertical migration of the same elements at a third zinc smelter also was defined. The migration of metals at the three smelters has been limited by attenuation processes to relatively shallow depths in the soil profile. Cation exchange and precipitation of insoluable metal compounds, resulting from pH changes in the infiltrating solution, were determined to be the principal mechanisms controlling the movement of the metals through the soil. Increased metal contents in the shallow groundwater systems have been confined to the imnediate plant sites. Soil coring was found to be an effective investigative tool but was not suitable by itself for routine monitoring of waste disposal activities. It should be used to gather preliminary information to aid in determining the proper horizontal and vertical locations for monitoring wells. The analyses of water samples collected in this project generally did not yield a stable, reproducible pattern of results. This indicates the need to develop techniques to obtain representative water samples. The failure of some well seals in a highly polluted environment also indicates the need for additional research into monitoring well construction.
		Date Created:	1 9 2006
		Agency ID:	COOP-9
		ISL ID:	000000000795 Original UID: 999999993856 FIRST WORD: Retention

777:		Title:	Geology, hydrology, and water quality of the Cambrian and Ordovician systems in northern Illinois
		Volume/Number:	1985
		Issuing Agency:
		Description:	Cambrian and Ordovician strata provide much of the groundwater supplyfor approximately 250 municipalities and 150 industries in the northern halfof Illinois. This report represents the cooperative effort of the IllinoisState Water Survey, Illinois State Geological Survey, and U.S. GeologicalSurvey to provide a current hydrogeologic evaluation of this water resource.
		Date Created:	9 24 2004
		Agency ID:	COOP-10
		ISL ID:	000000000796 Original UID: 999999993857 FIRST WORD: Geology,

778:		Title:	Hydrogeology and ground-water availability in southwest McLean and southeast Tazewell counties. Part 2: aquifer modeling and final report
		Volume/Number:	1998
		Issuing Agency:
		Description:	In 1993, with funding from the Long Range Water Plan Steering Committee (LRWPSC), the Illinois State Water Survey (ISWS) and the Illinois State Geological Survey (ISGS) began a study of the sand-and-gravel aquifers in southwest McLean and southeast Tazewell Counties to estimate the availability of ground water and determine the hydrogeologic feasibility of possibly developing a regional water supply. The study area includes the confluence of the buried Mahomet and Mackinaw Bedrock Valleys (confluence area) and contains part of one of the largest sand-and-gravel aquifers in Illinois, the Sankoty-Mahomet Sand aquifer. The study had two goals: (1) to determine the quantity of water a well field in the Sankoty-Mahomet Sand aquifer could yield, and (2) to determine the possible impacts to ground-water levels and existing wells that might occur in the Sankoty- Mahomet Sand aquifer and overlying aquifers from the development of a well field pumping 10-15 million gallons of water a day (mgd). Two major tasks were completed to meet the study goals. The first task was a hydrogeologic characterization of the glacially deposited (glacial-drift) aquifers within the confluence area. Results of the hydrogeologic characterization were published in 1995 (Herzog et al., 1995a and b) and a summary of their findings are in the appendices. The second task, and the subject of this report, was the development of a computer-based, mathematical model of the ground-water flow in the glacial deposits (ground-water flow model). The ground-water flow model was used to simulate the effects of a hypothetical well field for various locations within the study area and to provide an estimate of the amount of ground water a regional well field could yield from the Sankoty-Mahomet Sand aquifer within the confluence area. The characterization of the hydrogeology of the glacial-drift aquifer system was simplified to allow the development of a ground-water flow model. The generalized hydrogeology resembled a layer cake with uneven layers, some of which were discontinuous. The layers included relatively impermeable bedrock overlain by three sand-and-gravel aquifer layers that are generally separated by aquitard layers. Due to the complexity of the spatial distribution of the sand-and-gravel deposits above the Sankoty-Mahomet Sand aquifer, these shallower deposits were generalized as two aquifer layers. Although none of the aquifer deposits represented by the shallower aquifer layers are capable of sustaining a 10-15 mgd water supply, the thickness, distribution, and hydraulic properties of these deposits are important for a complete understanding of the hydrology of the model area. In some parts of the area covered by the ground-water flow model, two or more of the aquifer layers are in direct contact, providing a 'window' of hydraulic connection between the aquifer layers. In other parts of the model area, one or more of the aquifer layers are absent. Using the information from the hydrogeologic mapping and water-level data, chloride concentrations, and percent modern carbon data from observation wells, an updated conceptual understanding of the groundwater flow system for the Sankoty-Mahomet Sand aquifer was developed that described the movement of ground water into and out of the model area. Ground water in the Sankoty-Mahomet Sand aquifer generally flows through the Mahomet Bedrock Valley from the southeast, westward to the Illinois River and northward through the Mackinaw Bedrock Valley. The natural ground-water discharge areas for the Sankoty-Mahomet Sand aquifer in the study area are the Mackinaw River in the west-central part of the study area and Sugar Creek in the southwestern part of the study area. In some areas very close to the rivers, ground water is flowing upward from the Sankoty-Mahomet Sand aquifer through the upper aquifers and into the stream beds. There is a slight hydraulic gradient (slope) east of the model area that steepens where the flow enters the study area, even though the aquifer volume increases. This slope increase is caused by a greater amount of recharge entering the aquifer due to hydraulic connections with overlying aquifers. The areas of connection are more numerous in the west and north portions of the model area, as demonstrated by increases in water levels, decreases in chloride concentrations, and increases in modern carbon isotope concentrations in the Sankoty-Mahomet Sand aquifer. Down gradient of these connections, the chloride concentrations remain low, which suggests that the influx of ground water through these connections provides the majority of the recharge in these areas. Water pumped from the Normal west well field south of Danvers, which has wells penetrating into one of these upper aquifer connections, has low chloride values, indicative of water coming from the upper sands. Although the size of the original study area was about 260 square miles, the area to be modeled (model area) was expanded to 1,100 square miles. This expansion was necessary to reduce the effects of the model boundary conditions on simulated water levels in the study area. The simulated water levels are strongly influenced by the boundary conditions, which reduce the accuracy of the simulated water levels near the boundaries. The ground-water flow model was developed using Visual Modflow software. Three aquifer layers sandwiched between four aquitard layers are simulated in the model. Bedrock forms the lowest aquitard; till units form the others. The hydraulic property values of each hydrogeologic unit were assigned to the corresponding layer in the ground-water flow model where the unit was present. When a unit was absent, the layer was assigned the value of an overlying or underlying hydrogeologic layer. The model's boundary conditions control the regional flow into and out of the study area, discharge to and from the streams, infiltration from precipitation, and removal of water by production wells. The model was calibrated to match water levels measured in area wells in 1994 and to match the baseflow gains and losses in the Mackinaw River and Sugar Creek. The mean absolute error of the simulated water levels was 4.99 feet, which was only slightly greater than the errors associated with the potentiometric surface maps, indicating a good match between the model and the characterization of the ground-water flow system. The ground-water flow budget calculated using the model shows that 80 percent of the water coming into the model is from infiltration of precipitation, 11 percent is from the regional Mahomet aquifer in the east, and 8 percent is from river leakage. The budget also shows that 57 percent of the surface and ground water that leaves the model area does so through discharge to the rivers, 33 percent to the regional ground-water flow to the north and to the west, and the remaining 10 percent to existing production wells. (See online pub for remining abstract...)
		Date Created:	9 24 2004
		Agency ID:	COOP-19
		ISL ID:	000000000797 Original UID: 999999993916 FIRST WORD: Hydrogeology

779:		Title:	Ground-water investigation for the University of Illinois
		Volume/Number:	1999
		Issuing Agency:
		Description:	In 1997, the Illinois State Water Survey, at the request of the University of Illinois, initiated a test drilling project that included the construction of several 2-inch diameter observation wells at two sites on the Urbana-Champaign campus. The project concentrated on two areas in which cooling water was needed by the University the North Chiller Plant and the Abbott Power Plant. The purpose of the project was to determine whether sufficient ground-water resources could be located from which to develop a water supply. Exploration at both sites focused on sand-and-gravel materials within the Glasford Formation of Illinoian Age. The main area of interest was the North Chiller Plant at the intersection of Clark and Mathews Streets in Urbana, located in the SE of Section 7, T.19N, R.9E. (Urbana Township), Champaign County. If warranted by test drilling results, a seven-day aquifer test was proposed at the site to investigate the potential of pumping approximately 500 gallons per minute (gpm) from production wells. An area of secondary interest was the Abbott Power Plant between Armory and Gregory Streets and just east of the Illinois Central railroad tracks, located in Section 13, T.19N., R.8E. (Champaign Township). Testing at the Abbott site, if warranted, would examine the feasibility of developing 200 gpm from production wells. Exploratory test drilling at both sites, along with additional information from earlier reports and data on file, led to the following conclusions. The Glasford aquifer is present at most sites across the University of Illinois campus, although it varies considerably in both thickness and texture. The texture of the deposit appears to be finer in test holes south of Green Street. The top of the Glasford sand, near University Avenue, commonly occurs at elevations of 615 to 620 feet. However, the top of the sand at the Abbott Power Plant occurs much lower; the top of the aquifer occurs at about 595 feet. The bottom of the sand is more uniform and occurs at both plants at an elevation of approximately 565 feet. A shallower sand occurs at an elevation of about 640 feet, that is not considered part of the Glasford aquifer. It appears oxidized and occurs just below a very dark brown zone, presumably the Robein Silt. The depth to water in study wells finished in the Glasford aquifer is about 115 feet. Ground-water levels in the Glasford aquifer have a natural fluctuation of about 1 to 2 feet in the test holes. Water levels at the North Chiller Plant did not appear to have been affected significantly by water withdrawals at the Northern Illinois Water Corporation East Well Field. Levels were observed to be similar to levels reported in the 1930s. Water in the Glasford aquifer tends to be alkaline, very hard, high in iron concentration, and at a nearly constant temperature of about 57 degrees F. Although there had been some concern about potential contamination of the Glasford aquifer from fuel spills at the Abbott Power Plant, no contamination was evident in samples taken from test wells constructed for this project. Despite their relative proximity to the former locations of University Wells 10 and 11, no test holes drilled near the North Chiller Plant and Beckman Institute indicated a sufficient thickness of suitable sand material in the Glasford aquifer to warrant construction of a test well to conduct an aquifer test at the desired rate of 500 gpm. Test drilling at the Abbott Power Plant indicated a sufficient thickness of Glasford aquifer present to warrant an aquifer test at perhaps 100 gpm. Accordingly, well designs are recommended for the construction of two test wells or production wells at that site, which might be capable of producing the desired quantity of 200 gpm.
		Date Created:	9 24 2004
		Agency ID:	CR-636
		ISL ID:	000000000798 Original UID: 999999994043 FIRST WORD: Ground

780:		Title:	Sedimentation survey of Lake Vermilion, Vermilion County, Illinois
		Volume/Number:	1999
		Issuing Agency:
		Description:	The Illinois State Water Survey, in cooperation with the Consumers Illinois Water Company (CIWC), conducted a sedimentation survey of Lake Vermilion during the summer of 1998. The survey was undertaken to provide information on the storage and sedimentation conditions of the lake following a 1991 increase in the operational lake level. Lake Vermilion is owned and operated by the CIWC. The CIWC withdraws water from Lake Vermilion as the sole raw water source for direct distribution of finished water to Danville and Tilton, Illinois. The CIWC also provides finished water to the Catlin and Westville public water supplies. Lake Vermilion is located in Vermilion County, one mile northwest of Danville, Illinois. The operating elevation for the reservoir was increased from 576 feet NGVD to 582.2 feet NGVD in 1991. This modification increased storage capacity of the lake by approximately 4,600 acre-feet (ac-ft). Analysis of sedimentation rates for this larger storage capacity required the introduction of the term potential capacity for the reservoir for 1925-1991. The potential reservoir capacity was defined as the capacity of the reservoir if the basin formed by the valley had been filled to the level of the 1991 spillway. Sedimentation has reduced the potential capacity of Lake Vermilion from 13,209 ac-ft (4,304 million gallons) in 1925 to 7,971 ac-ft (2,597 million gallons) in 1998. The sediment accumulation rates in the lake have averaged 71.8 ac-ft per year from 1925-1998. Annual sedimentation rates for three separate periods, 1925-1963, 1963-1976, and 1976-1998 were 89.5, 50.2, and 53.9 ac-ft, respectively. Earlier lake structures affect the lake as it exists in 1999. These early structures also affected the ability to analyze the present sedimentation rate. The 1914 structure (the old dam) impounded water in what is now the upstream, northern half (lengthwise) of the present lake. This structure caused an undocumented amount of sedimentation in the affected lake segments. This sedimentation is included in the calculated sedimentation volume for the 1925-1963 survey period. On the basis of a 38-year (1925-1963) or a 49-year sedimentation period (1914-1963), the average annual sedimentation rate for the lake would be 89.5 and 69.4 ac-ft per year, respectively. Either rate is considerably higher than subsequent rates. The adjustment of the earlier volumes included an accounting of above water-level deposits for the 1963 and 1976 survey calculations and slightly increased the reported sediment volumes for those surveys. The change in reference capacity also significantly altered the presented sedimentation rates in percent of original volume.
		Date Created:	8 31 2006
		Agency ID:	CR-643
		ISL ID:	000000000799 Original UID: 999999994049 FIRST WORD: Sedimentation

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