Occurrence and variability of mining-related lead and zinc in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009--11

Historical mining activity in the Tri-State Mining District (TSMD), located in parts of southeast Kansas, southwest Missouri, and northeast Oklahoma, has…

Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.

U.S. Department of the Interior U.S. Geological Survey Scientific Investigations Report 2013–5028 Prepared in cooperation with the U.S. Environmental Protection Agency Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain and Tributary Flood Plains, Cherokee County, Kansas, 2009–11

Cover.  Chat piles (mine tailings) in the Tar Creek Basin, Cherokee County, Kansas (photograph by Eric Looper, U.S. Geological Survey).

Occurrence and Variability of MiningRelated Lead and Zinc in the Spring River Flood Plain and Tributary Flood Plains, Cherokee County, Kansas, 2009–11 By Kyle E. Juracek Prepared in cooperation with the U.S. Environmental Protection Agency Scientific Investigations Report 2013–5028 U.S. Department of the Interior U.S. Geological Survey

U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Suzette M. Kimball, Acting Director U.S. Geological Survey, Reston, Virginia: 2013 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit ://www.usgs.gov or call 1–888–ASK–USGS. For an overview of USGS information products, including maps, imagery, and publications, visit ://www.usgs.gov/pubprod To order this and other USGS information products, visit ://store.usgs.gov Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Suggested citation: Juracek, K.E., 2013, Occurrence and variability of mining-related lead and zinc in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009–11: U.S. Geological Survey Scientific Investigations Report 2013–5028, 70 p.

Contents Acknowledgments vi Abstract 1 Introduction 1 Previous Investigations 3 Purpose and Scope 5 Description of the Spring River Basin 5 Methods 5 Flood-Plain Surficial-Soil Sampling and Analysis 5 Site Selection 5 Sample Collection and Preparation 6 Chemical Analyses 6 Particle-Size Analysis 10 Flood-Plain Coring and Analysis 10 Site Selection 10 Core Collection and Preparation 11 Chemical Analysis 11 Quality Control 11 Samples Collected from the Spring River Flood Plain 11 Samples Collected from the Tributary Flood Plains 14 Sediment-Quality Guidelines 15 Background Information for Trace Elements 16 Flood-Plain Occurrence of Mining-Related Lead and Zinc 16 Spring River 17 Brush Creek 17 Cow Creek 17 Shawnee Creek 17 Shoal Creek 17 Short Creek 21 Spring Branch 21 Tar Creek 22 Turkey Creek 22 Willow Creek 23 Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors 23 Source Effects 23 Downstream Effects 26 Distance-from-Channel Effects 30 Particle-Size Effects 32 Summary and Conclusions 32 References Cited 33 Appendixes 37

Figures

1.  Map showing location of the Spring River system, the Cherokee County superfund site, and lead- and zinc-mined areas in the Tri-State Mining District, Kansas, Missouri, and Oklahoma 2

2.  Maps showing location of surficial-soil sampling sites and coring sites in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas 7

3.  Map showing lead concentrations in surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011 18

4.  Map showing zinc concentrations in surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011 20

5.  Graph showing variability of flood-plain zinc concentrations with distance from the Spring River along transects T1 through T6 30 Tables

1.  Chemical analyses performed on surficial-soil and core samples from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009–11 10

2.  Cadmium, lead, and zinc concentrations for three surficial-soil samples collected from the Spring River flood plain and six surficial-soil samples collected from the tributary flood plains, Cherokee County, Kansas, and analyzed by x-ray fluorescence and spectroscopic methods 13

3.  Sediment-quality guidelines and associated bioaccumulation index for cadmium, lead, and zinc 16

4.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil samples collected from the Spring River flood plain, Cherokee County, Kansas, November 2009 19

5.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Brush Creek flood plain, Cherokee County, Kansas, April and May 2011 21

6.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Cow Creek flood plain, Cherokee County, Kansas, March 2011 22

7.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Shawnee Creek flood plain, Cherokee County, Kansas, March 2011 23

8.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Shoal Creek flood plain, Cherokee County, Kansas, May 2011 24

9.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Short Creek flood plain, Cherokee County, Kansas, March and April 2011 25

10.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Spring Branch flood plain, Cherokee County, Kansas, March 2011 26

11.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Tar Creek flood plain, Cherokee County, Kansas, March and April 2011 27

12.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Turkey Creek flood plain, Cherokee County, Kansas, March 2011 28

13.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Willow Creek flood plain, Cherokee County, Kansas, April 2011 29

14.  Lead and zinc concentrations with distance from the Spring River for flood-plain coring sites located along transects T1 through T6 31 Appendix Tables

1–1.  Latitude and longitude coordinates, and land use, for surficial-soil sampling sites in the Spring River flood plain and tributary flood plains in Cherokee County, Kansas, 2009, 2011 38

1–2.  Latitude and longitude coordinates for coring sites in the Spring River flood plain in Cherokee County, Kansas, November 2009 and March 2010 41

1–3.  Percentage of silt and clay and constituent concentrations determined by combustion and spectroscopic methods for three surficial-soil samples collected from the Spring River flood plain, Cherokee County, Kansas, November 2009 42

1–4.  Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values 43

1–5.  Percentage of silt and clay and constituent concentrations determined by combustion and spectroscopic methods for six surficial-soil samples collected from tributary flood plains, Cherokee County, Kansas, March, April, and May 2011 49

1–6.  Cadmium concentrations determined by x-ray fluorescence for surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011 51

1–7.   Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010 53

1–8.  Cadmium concentrations determined by x-ray fluorescence for cores collected from tributary flood plains, Cherokee County, Kansas, 2011 69

Conversion Factors, Abbreviations, and Datum Multiply By To obtain Length centimeter (cm) inch (in.) inch (in.) centimeter (cm) foot (ft) meter (m) mile (mi) kilometer (km) millimeter (mm) inch (in.) Area acre 4,047 square meter (m2) acre hectare (ha) acre square kilometer (km2) square foot (ft2) square meter (m2) square mile (mi2) hectare (ha) square mile (mi2) square kilometer (km2) Mass gram (g) ounce (oz) milligram per kilogram (mg/kg) part per million (ppm) pound (lb) kilogram (kg) Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83). Acknowledgments The author acknowledges Bryant Burnett (U.S. Environmental Protection Agency, Galena, Kansas) and Carl Hayes (Cherokee County Health Department, Columbus, Kansas) for their much-appreciated assistance in obtaining access permission from multiple landowners for the purpose of sample collection. For conducting the x-ray fluorescence analyses of the surficial-soil and core samples, Bryant Burnett and Laura Price (U.S. Environmental Protection Agency, Kansas City, Kansas) are acknowledged. For providing a technical review of the report, John Miesner (U.S. Fish and Wildlife Service, Manhattan, Kansas) is acknowledged. Several U.S. Geological Survey individuals also are recognized for their invaluable assistance in the completion of this study. For core collection on the Spring River flood plain, the author acknowledges Paul Brenden, Eric Looper, Jake Morris, and Doug Mugel. For core collection on the tributary flood plains, the author acknowledges Eric Looper. For collection of surficial-soil samples from the Spring River flood plain and tributary flood plains, the author acknowledges Eric Looper. Finally, for providing a technical review of the report, the author acknowledges Doug Mugel.

Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain and Tributary Flood Plains, Cherokee County, Kansas, 2009–11 By Kyle E. Juracek Abstract Historical mining activity in the Tri-State Mining District (TSMD), located in parts of southeast Kansas, southwest Mis­ souri, and northeast Oklahoma, has resulted in a substantial ongoing input of cadmium, lead, and zinc to the environment. To provide some of the information needed to support reme­ diation efforts in the Cherokee County, Kansas, superfund site, a 4-year study was begun in 2009 by the U.S. Geological Sur­ vey that was requested and funded by the U.S. Environmental Protection Agency. A combination of surficial-soil sampling and coring was used to investigate the occurrence and variabil­ ity of mining-related lead and zinc in the flood plains of the Spring River and several tributaries within the superfund site. Lead- and zinc-contaminated flood plains are a concern, in part, because they represent a long-term source of contamina­ tion to the fluvial environment. Lead and zinc contamination was assessed with reference to probable-effect concentrations (PECs), which represent the concentrations above which adverse aquatic biological effects are likely to occur. The general PECs for lead and zinc were 128 and 459 milligrams per kilogram, respectively. The TSMD-specific PECs for lead and zinc were 150 and 2,083 milligrams per kilogram, respectively. Typically, surficial soils in the Spring River flood plain had lead and zinc concentrations that were less than the general PECs. Lead and zinc concentrations in the surficialsoil samples were variable with distance downstream and with distance from the Spring River channel, and the largest lead and zinc concentrations usually were located near the channel. Lead and zinc concentrations larger than the general or TSMD-specific PECs, or both, were infrequent at depth in the Spring River flood plain. When present, such contamination typically was confined to the upper 2 feet of the core and frequently was confined to the upper 6 inches. Tributaries with few or no lead- and zinc-mined areas in the basin—Brush Creek, Cow Creek, and Shawnee Creek— generally had flood-plain lead and zinc concentrations (surficial soil, 6- and 12-inch depth) that were substantially less than the general PECs. Tributaries with extensive lead- and zinc-mined areas in the basin—Shoal Creek, Short Creek, Spring Branch, Tar Creek, Turkey Creek, and Willow Creek—had floodplain lead concentrations (surficial soil, 6- and 12-inch depth) that frequently or typically exceeded the general and TSMD-specific PECs. Likewise, the tributaries with extensive lead- and zinc-mined areas in the basin had flood-plain zinc concentrations (surficial soil, 6- and 12-inch depth) that frequently or typically exceeded the general PEC. With the exception of Shoal and Willow Creeks, zinc concentrations typically exceeded the TSMD-specific PEC. The largest floodplain lead and zinc concentrations (surficial soil, 6- and 12-inch depth) were measured for Short and Tar Creeks. Lead and zinc concentrations in the surficial-soil samples collected from the tributary flood plains varied longitudinally in relation to sources of mining-contaminated sediment in the basins. Lead and zinc concentrations also varied with distance from the channel; however, no consistent spatial trend was evident. For the surficial-soil samples collected from the Spring River flood plain and tributary flood plains, both the coarse (larger than 63 micrometers) and fine particles (less than 63 micrometers) contained substantial lead and zinc concentrations. Introduction For about 100 years (1850–1950), the Tri-State Mining District (TSMD) in parts of southeast Kansas, southwest Missouri, and northeast Oklahoma (fig. 1) was one of the primary sources of lead and zinc ore in the world (Brosius and Sawin, 2001). Mining activity in the TSMD ended in the 1970s. The historical mining activity in the TSMD has resulted in a substantial ongoing input of cadmium, lead, and zinc to the environment (Juracek, 2006; Juracek and Becker, 2009). Recent studies by the U.S. Geological Survey (USGS), in cooperation with the U.S. Fish and Wildlife Service (USFWS) and the Kansas Department of Health and Environment (KDHE), documented cadmium, lead, and zinc concentrations in sediment that far exceeded background levels as well as probable-effects guidelines for toxic aquatic biological effects (Pope, 2005; Juracek, 2006). For these

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Introduction    3 studies, the USGS sampled deposited sediment in the Spring River and its tributaries, Tar Creek, and Empire Lake in Cherokee County, Kansas. Sediment quality is an important environmental concern because sediment may be a sink for some water-quality constituents and a source of constituents to the overlying water col­umn and biota (Baudo and others, 1990; Zoumis and others, 2001; Luoma and Rainbow, 2008). Once in the food chain, sedi­ment-derived constituents may pose an even greater concern because of bioaccumulation (that is, the accumulation of constituents in biological tissues of living organisms) (Smol, 2002). The ongoing mining-related input of cadmium, lead, and zinc to the environment has resulted in contamination that has adversely affected biota including mussels (Angelo and others, 2007), waterfowl (Beyer and others, 2004; van der Merwe and others, 2011), and fish (Wildhaber and others, 1998, 1999, 2000). In recent years, a shellfish consumption advisory was issued in Kansas (Kansas Department of Health and Environment, 2006, 2012) and a fish consumption advisory was issued in Oklahoma (Oklahoma Department of Environmental Quality, 2008) because of cadmium or lead contamination, or both. Human health problems and risks also have been attributed to mining-related contamination (Neuberger and others, 1990; Malcoe and others, 2002). In response to concern about the mining-related environmental contamination, southeast Cherokee County was listed on the U.S. Environmental Protection Agency’s (USEPA) National Priority List as a superfund hazardous waste site in 1983 (U.S. Environmental Protection Agency, 2004). Mining-related contamination is not confined to stream channels and lake beds in Cherokee County (Juracek, 2006). During floods, contaminated sediment is carried out of the channels and deposited on the adjoining flood plains. Floodplain contamination is an important environmental concern because of the potentially toxic effects of the contaminated sediment on wildlife. Moreover, the contaminated flood plains are a potential concern because the stored sediment may be remobilized and reintroduced into the aquatic environment (for example, by floods and channel-bank erosion). Given the importance of flood-plain contamination as an issue for environmental restoration, an understanding of the magnitude and extent of the contamination is needed. A 4-year study by USGS, which was requested and funded by USEPA, was begun in 2009 to investigate the occurrence and variability of mining-related cadmium, lead, and zinc in the Spring River flood plain and tributary flood plains located in the Cherokee County, Kansas, superfund site (fig. 1). The specific objectives of the study were to: Determine the concentrations of cadmium, lead, and zinc in the Spring River flood plain and tributary flood plains; Determine how flood-plain contamination along the Spring River and tributary streams varies with dis­ tance downstream, with distance from the channel, and in relation to particle size; and Determine the depth of contamination in the Spring River flood plain and tributary flood plains. Information on contamination of the Spring River flood plain and tributary flood plains provided by this study, in combination with previous studies on in-channel and lakebed sediment contamination, will assist USEPA in the development of a comprehensive remediation plan for Cherokee County. Previous Investigations Several previous studies have examined the effects of lead and zinc mining on water and sediment quality in or near Cherokee County, Kansas. Barks (1977) investigated the effects of abandoned lead and zinc mines and tailings piles on water and sediment quality in the vicinity of Joplin, Missouri. Water from abandoned lead and zinc mines in the area, some of which discharges at the surface, was determined to have average dissolved zinc concentrations of 9,400 micrograms per liter (µg/L). Mine-water discharges increased the dissolved zinc concentrations in receiving streams from a baseline of about 40 µg/L to about 500 µg/L during low-flow conditions. In runoff from tailings areas, dissolved zinc con­centrations averaged 16,000 µg/L. Runoff from one tailings area during a summer storm con­tained maximum dissolved cadmium, lead, and zinc concentrations of 1,400 µg/L, 400 µg/L, and 200,000 µg/L, respectively. The mining activity also resulted in increased zinc concentrations in stream-bottom sediment from a baseline of about 100 micrograms per gram (µg/g) to about 2,500 µg/g and increased lead con­centrations in stream-bottom sediment from a baseline of about 20 µg/g to about 450 µg/g (Barks, 1977). The bottom-sediment samples, described as sandy, were not sieved to isolate the silt-clay fraction before analyses to determine trace-element concentrations. Spring River tributaries sampled as part of the Barks (1977) study included Center Creek, Short Creek, and Turkey Creek (fig. 1). An extensive study of the effects of abandoned lead and zinc mines on hydrology and sur­face-water and groundwater quality in Cherokee County, Kansas, and adjacent areas, was completed by Spruill (1987). Water from mines located mostly in the vicinity of Galena, Kansas (fig. 1) had respective median concentrations of 180 µg/L, 240 µg/L, and 37,600 µg/L for dissolved cadmium, lead, and zinc. Of the four streams sampled that were affected by lead and zinc mining and provide flow directly or indirectly to Empire Lake (that is, Center Creek, Shoal Creek, Short Creek, and Turkey Creek; fig. 1), Short Creek had the largest concentrations of dissolved cadmium (170 µg/L) and zinc (25,000 µg/L) (Spruill, 1987). Ferrington and others (1989) completed a study to determine the occurrence and biologi­cal effects of cadmium, lead, manganese, and zinc in the Short Creek/Empire Lake aquatic system in Cherokee County, Kansas. As part of this study, bottom sediment was sampled at multiple sites within the Spring River and Shoal Creek arms as well as the

4    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas main body of Empire Lake. Bot­tom sediment throughout Empire Lake was found to have increased concentrations of all four trace elements. The largest concentrations of cadmium, lead, and zinc were detected in two samples collected from the Spring River arm near the mouth of Short Creek (fig. 1). At this location, mean con­centrations of cadmium, lead, and zinc were about 129 µg/g, 1,600 µg/g, and 23,000 µg/g, respectively (Fer­rington and others, 1989). The bottom-sediment samples were not sieved to isolate the silt-clay fraction prior to analyses to determine trace-element concentrations. Overall, the results indicated substantial transport and accumulation of sediment-associated trace elements in Empire Lake. No statistically significant relations between trace-element concentrations and benthic macroinverte­brate species richness or abundance were determined. It was concluded that the pri­mary biological effect of large cadmium, lead, and zinc concentrations in the bottom sediment of Empire Lake was a reduction of aquatic macroinvertebrate abundance, and pre­sumably overall biological productivity of the reservoir system (Ferrington and others, 1989). A study to determine concentrations of trace elements and organic compounds in sedi­ment and biota of the Spring River system, including Empire Lake, was completed by USFWS in 1992. As part of the study, two bottom-sediment samples were col­lected from a site in both the Spring River and Shoal Creek arms upstream from the main body of Empire Lake. Cadmium concentrations in the bottom sediment averaged about 26 µg/g for the sampling site in the Spring River arm and about 23 µg/g for the sampling site in the Shoal Creek arm. For lead, the respective average sediment concentrations for the Spring River and Shoal Creek sites were 165 and 230 µg/g. Average zinc concentrations in the sediment for the Spring River and Shoal Creek sites were 3,580 and 3,300 µg/g, respectively (U.S. Fish and Wildlife Ser­vice, 1992). It is uncertain if the bottom-sediment samples were sieved to isolate the siltclay frac­tion before analyses to determine trace-element concentrations. Davis and Schumacher (1992) conducted an appraisal of surface-water quality in the Spring River Basin of southwest Missouri and southeast Kansas using existing water-qual­ity data collected from the early 1960s to September 1987 by USGS and KDHE. Results indicated that several Spring River tributaries, including Brush, Center, Cow, Turkey, and Short Creeks (fig. 1), are sig­nificantly affected by lead-zinc or coal mining. The effect of the contaminated tributaries on the water quality of the Spring River was revealed by a comparison of the water-quality data collected at the Spring River sampling stations located near Waco, Missouri (upstream from the tributary inflows), and Baxter Springs, Kansas (downstream from the tributary inflows) (fig. 1). Increased median concentrations of several water-quality constituents were documented including an increase of dissolved zinc from 30 to 310 µg/L. The largest single source of dissolved zinc to the Spring River was determined to be Short Creek. Davis and Schumacher (1992) also concluded that baseline water-quality conditions for the study area were best represented by the Spring River near Waco, Missouri, and Shoal Creek near Galena, Kansas. A study by Pope (2005) provided an assessment of streambed sediment quality along the main stem and major tributaries of both the Spring River and Tar Creek within the boundary of the Cherokee County, Kansas, superfund site (fig. 1). All sediment samples were collected to a depth of 0.8 inch (in.) and sieved to isolate the less than 63-micrometers (µm) fraction (silt- and clay-size particles) for analysis. Concentrations ranged from 0.6 to 460 milligrams per kilogram (mg/kg) for cadmium, 22 to 7,400 mg/kg for lead, and 100 to 45,000 mg/kg for zinc, with respective median concentrations of 13, 180, and 1,800 mg/kg. The largest concentrations were measured at sampling sites in the Short Creek, Tar Creek, and Spring Branch basins. Proceeding downstream along the 22-mile length of the Spring River within the study area, it was determined that sediment concentrations of cadmium, lead, and zinc increased about 18, 7, and 17 times, respectively. Juracek (2006) investigated mining-related sediment contamination in Empire Lake, Kansas (fig. 1). All bottomsediment samples were sieved to isolate the less than 63-µm fraction for analysis. Cadmium concentrations ranged from 7.3 to 76 mg/kg with a median concentration of 29 mg/kg. Lead concentrations ranged from 100 to 950 mg/kg with a median concentration of 270 mg/kg. Zinc concentrations ranged from 1,300 to 13,000 mg/kg with a median concentration of 4,900 mg/kg. In general, the cadmium, lead, and zinc concentrations were one to two orders of magnitude larger than estimated local background concentrations with the largest concentrations in the older sediment that corresponded to when the mines were in operation. Despite a decrease in concentrations with time, the concentrations of cadmium, lead, and zinc in the most recently deposited bottom sediment still exceeded probable-effects guidelines (U.S. Environmental Protection Agency, 1997; MacDonald and others, 2000) for toxic aquatic biological effects. Angelo and others (2007) investigated the effects of historical lead and zinc mining activity on mussel populations in the Spring River Basin. As part of the study, mussel species diversity, densities, and concentrations of cadmium, lead, and zinc in streambed sediment and mussel soft tissue were determined at selected sites along the Spring River and tributary streams. Mussels were not found in the downstream reaches of Center, Shoal, Short, and Turkey Creeks. Also, mussel diversity and density were substantially reduced in the Spring River downstream from Center and Turkey Creeks. Angelo and others (2007) concluded that the historical lead and zinc mining activity continues to adversely affect environmental quality and impede the recovery of mussel populations in much of the Spring River Basin. MacDonald and others (2010) completed an ecological risk assessment to investigate risks to benthic invertebrates exposed to contaminants in aquatic habitats within the TSMD. Specifically, the assessment was focused on the survival,

Methods    5 growth, and reproduction of amphipods, midges, and mussels as affected by exposure to contaminants in surface water, sediment, and pore water. Cadmium, lead, and zinc were identified as the principal contaminants of interest in the TSMD. It was determined that exposure to contaminated surface water, sediment, and pore water posed increased risks to benthic invertebrates throughout a large part of the TSMD (MacDonald and others, 2010). Purpose and Scope The purpose of this report is to present the results of the USGS study to assess the magnitude, extent, and variability of mining-related contamination in the Spring River flood plain and tributary flood plains located in the Cherokee County, Kansas, superfund site. In 2009, surficial-soil samples were collected at 30 sites in the Spring River flood plain. In 2009 and 2010, a total of 34 cores were collected along 6 transects in the Spring River flood plain. In 2011, surficial-soil samples and cores were collected at more than 50 sites along transects in several tributary flood plains. All surficial-soil samples and cores were analyzed for cadmium, lead, and zinc concentrations. Cadmium, lead, and zinc are the trace elements that were of primary interest in this study because they are the major contaminants introduced into the environment as a result of the historical mining activity (Juracek, 2006). In this report, background trace element concentrations were defined as concentrations that were minimally affected by historical lead and zinc mining. Results presented in this report will provide some of the information required by USEPA for the development of a comprehensive remediation plan for Cherokee County. From a national perspective, the methods and results presented in this report provide guidance and perspective for future studies concerned with the issues of sediment-associated contaminant transport and deposition in fluvial environments. Description of the Spring River Basin The Spring River Basin drains about 2,500 square miles (mi2) of southwest Missouri, southeast Kansas, and northeast Oklahoma (Seaber and oth­ers, 1987) (fig. 1). Principal tributaries to the Spring River in Cherokee County include Brush Creek, Cow Creek, Center Creek, Shawnee Creek, Shoal Creek, Short Creek, Turkey Creek, and Willow Creek (fig. 1). Several of the tributaries drain areas that were sub­ stantially affected by historical lead and zinc mining. The Spring River Basin overlaps two physiographic provinces as defined by Fenneman (1938, 1946). The southeast two-thirds of the basin is located in the Springfield Plateau Section of the Ozark Plateaus Province. This part of the basin is underlain by limestone of Mississippian age (Fenneman, 1938). The northwest one-third of the basin, including the Kansas part of the basin located west of the Spring River, is located in the Osage Plains Section of the Central Lowland Province. This part of the basin is underlain by shale with interbedded sandstone and limestone of Pennsylvanian age (Fenneman, 1938). Topographically, the basin is typified by gently roll­ing uplands dissected by streams. The lead and zinc ores in the TSMD occur in the cherty limestones of Mississippian age. The ores possibly resulted from hydrothermal (that is, hot, metal-bearing) solutions that origi­nated as sedimentary brines (Leach and others, 2010) and moved into the porous and perme­able cherty limestones. The solutions deposited sphalerite (zinc sulfide), galena (lead sulfide) and other associated minerals. Several major soil associations are present within the Spring River Basin. Soils in the Missouri part of the basin are described by Allgood and Persinger (1979). Information on soils in the Kansas part of the basin is provided by the U.S. Department of Agriculture, Soil Conservation Service (1973, 1985). The climate in the Spring River Basin is characterized as subhumid continental (Stringer, 1972). Long-term, mean annual precipitation at Joplin, Missouri (period of record 1948–2011) is about 43 in. (High Plains Regional Climate Center, 2012) (fig. 1). Land use in the Spring River Basin is predominantly a mix of cropland, grassland, and woodland (Davis and Schumacher, 1992). Historically, numerous sites within the basin were mined for coal, lead, and zinc (Brichta, 1960; Marcher and others, 1984). The distribution of lead- and zincmined lands within the basin is shown in figure 1. Methods The objectives of this study were accomplished using available and newly collected information. Available information included sediment chemistry data from previous investigations. New information was obtained through the collection and analysis of surficial-soil samples and cores from the Spring River flood plain and tributary flood plains in the Cherokee County superfund site. Flood-Plain Surficial-Soil Sampling and Analysis Site Selection The selection of surficial-soil sampling sites for the Spring River flood plain involved multiple steps. First, all 1-mi2 sections that were located mostly (that is, at least 50 percent) or completely in the Spring River flood plain were identified using USGS 1:24,000-scale topographic quadrangle maps. Second, the selected sections were divided into quadrants. Third, for each section, a quadrant was randomly selected for sampling. The random-selection process involved the use of coin flips to determine if the quadrant was north or south and east or west. Using this process, either the

6    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas northwest, northeast, southwest, or southeast quadrant was selected for each section. If the randomly selected quadrant for a section was unusable, either because it was located mostly out of the flood plain or because access permission from the land owner was not granted, the next quadrant was selected using a clockwise rotation. A total of 30 surficial-soil sampling sites were selected (fig. 2A). Typically, the floodplain soil was sampled at the center of each randomly selected quadrant. However, for a few quadrants, the soil was sampled off center either because the center of the quadrant was under water or because access permission from the land owner was not granted. The latitude and longitude coordinates for the center of each sampling site, obtained using global positioning system (GPS) technology, are provided in table 1–1 in the appendix at the back of this report. Tributary streams for which flood-plain surficial soils were sampled included Brush Creek, Cow Creek, Shawnee Creek, Shoal Creek, Short Creek, Spring Branch, Tar Creek, Turkey Creek, and Willow Creek (fig. 1). Tar Creek is not a direct tributary of the Spring River. It flows into the Neosho River, which subsequently joins the Spring River at Grand Lake O’ the Cherokees in Oklahoma. Tar Creek was included because it drains a part of Cherokee County that was substantially affected by historical lead and zinc mining activity (fig. 1). Along each stream, one to three transects were established for the purpose of sampling (figs. 2A–2U). A total of 20 transects were established. Along each transect, two to four sampling sites were selected. The distance between successive sampling sites (when two or more sites were sampled on the same side of the stream) ranged from about 10 to about 300 feet (ft) as determined by flood-plain width, number of sites, and site conditions. A total of 59 surficialsoil sampling sites were selected. The latitude and longitude coordinates for the center of each sampling site, obtained using GPS technology, are provided in table 1–1 at the back of this report. Sample Collection and Preparation The Spring River flood-plain surficial-soil samples were collected in the fall of 2009. The tributary flood-plain surficial-soil samples were collected in the spring of 2011. All flood-plain surficial-soil samples were collected to a depth of about 1 in. At each Spring River flood-plain site, the soil was sampled at the selected center location and typically at a distance (hereafter referred to as the sampling radius) of 100 ft north, south, east, and west of the center. This sampling method is referred to as the five-point sampling technique. For the tributary flood-plain sites, the five-point sampling technique was used with a sampling radius that ranged from 5 to 50 ft as determined by the width of flood plain available for sampling and the number of sampling sites per transect. At each sampling site, an equal volume of soil was collected at the five locations using a 5-in. long section of cellulose acetate butyrate transparent tubing (2.625-in. inside diameter) that was pushed by hand into the soil. The tubing was thoroughly cleaned with a clean paper towel prior to each reuse. For each site, the soil from the five locations was combined in a plastic bag and transported back to the USGS laboratory in Lawrence, Kansas, for subsequent sample preparation. Following air drying, each bulk sample was spread out on a clean plastic sheet and all visible organics (for example, plant fragments, seed pods, and roots) were removed using stainless steel tweezers. Each sample was disaggregated using a rubber-tipped pestle until the entire sample passed through a 4-millimeter (mm) stainless steel sieve. Then, each disaggregated sample was placed in a glass bowl and homogenized using a plastic spoon to provide a composite sample for each site. All utensils used in sample preparation were thoroughly cleaned with deionized water and wiped dry with a clean paper towel before each reuse. The composite sample for each site was split into three subsamples of approximately equal size by successively removing random scoops of the sample using a plastic spoon and placing it into three separate plastic bags. The scooping continued until the entire sample was redistributed into the three subsamples. Respectively, subsamples a, b, and c were used for chemical analyses, particle-size analysis, and archival. Chemical Analyses The flood-plain surficial-soil samples were analyzed for cadmium, lead, and zinc using x-ray fluorescence (XRF) (U.S. Environmental Protection Agency, 2007). The Spring River flood-plain samples were analyzed at the USEPA field office in Galena, Kansas. The tributary flood-plain samples were analyzed at the USEPA office in Kansas City, Kansas. All samples were analyzed as bulk samples. Subsequently, all samples were wet sieved using deionized water to isolate the less than 63-µm fraction (silt and clay). The less than 63-µm fraction for each sample was dried and analyzed for cadmium, lead, and zinc using XRF. All bulk and less than 63-µm samples collected from the Spring River flood plain were analyzed using a handheld XRF instrument. All bulk and less than 63-µm samples collected from the tributary flood plains were analyzed using a stationary XRF instrument. To assess comparability of results with other recently completed studies in Cherokee County, Kansas [see studies by Pope (2005) and Juracek (2006) in the Previous Investigations section of this report], a split-replicate sample from three Spring River flood-plain surficial-soil sampling sites (SRF-2, SRF-5, and SRF-10) and six tributary floodplain surficial-soil sampling sites (BC2-1, SB2-2, SnC2-1, StC1-2, TrC1-3, and WC2-1) were analyzed by combustion and various spectroscopic methods (table 1). For each site, the composite sample was split to provide the original and split-replicate samples. Besides cadmium, lead, and zinc, the nine split-replicate samples were analyzed for 22 additional trace elements, nutrients (total nitrogen and total phosphorus)

Methods    7 Empire Lake XYXYXYXYXY XY XY XY XY XY XY XYXYXYXYXY XY XYXYXYXYXY XYXYXYXYXYXYXY XYXYXYXYXY !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( Baxter Springs Galena Treece 94°40' 45' 94°50' 37°15' 10' 05' 37°00’ Kansas Missouri Oklahoma Map area EXPLANATION MILES KILOMETERS SRF-1 SRF-3 SRF-2 SRF-4 SRF-19 SRF-17 SRF-18 SRF-11 SRF-16 SRF-13 SRF-9 SRF-7 SRF-14 SRF-6 SRF-15 SRF-10 SRF-5 SRF-20 SRF-23 SRF-22 SRF-26 SRF-25 SRF-29 SRF-21 SRF-33 SRF-32 SRF-31 SRF-28 SRF-27 SRF-24 Boundary of Cherokee County superfund site Short Creek S p r n g R ve r Sh oa

re e k o w

r e e k Sp r n g Ri e r Tar Creek Spring Rive r T1-1 T2-1 T2-6 T1-5 T3-5 T3-1 T4-1 T4-5 T5-1 T5-7 T6-1 T6-5 StC2 StC1 TkC1 SnC1 ShC2 SnC2 SB2 SB1 WC1 ShC1 WC2 SB3 TrC2 TrC3 WC3 BC2 TrC1 BC1 XY Willow Cr eek T6-1 ( SRF-33 !( TrC1 B r u s h re ek S p r n g B r a nc h S h a wn ee

r ee k Lead and zinc mined areas Approximate flood-plain extent U.S. Geological Survey surficial-soil sampling site in the Spring River flood plain and site identifier U.S. Geological Survey surficial-soil sampling and coring transect in tributary flood plain and transect identifier. See figures 2B–2U for location of sampling sites along each transect U.S. Geological Survey coring site in Spring River flood plain and site identifier—First two characters, T1–T6, represent the transect identifiers Turkey Creek Center Creek 2A Base from U.S. Geological Survey digital data, 1987, 1:100,000 Universal Transverse Mercator projection Zone 15 Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83) Lead and zinc mined areas from Brichta, 1960 Approximate flood-plain extent from Federal Emergency Management Agency (2008) Figure 2. Location of surficial-soil sampling sites and coring sites in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas. (Note: Because the tributary streams are shown as linear, rather than two-dimensional, features in figures 2B–2U, the sampling sites are closer to the channels than they appear.)

8    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas BC1-4 BC1-3 BC1-2 BC1-1 2B. Brush Creek transect BC1 Brush reek Brush reek BC2-2 BC2-1 2D. Cow Creek transect CC1 Cow r eek 2C. Brush Creek transect BC2 2E. Cow Creek transect CC2 (unnamed tributary) Unnamed tri b utary SnC1-3 SnC1-2 SnC1-1 2F. Shawnee Creek transect SnC1 Shawnee Creek SnC2-2 SnC2-1 2G. Shawnee Creek transect SnC2 ShC1-3 ShC1-2 ShC1-1 2H. Shoal Creek transect ShC1 Shoal C reek ShC2-4 ShC2-3 ShC2-2 ShC2-1 2I. Shoal Creek transect ShC2 Shoal Creek StC1-3 StC1-2 StC1-1 2J. Short Creek transect StC1 Sho rt Creek StC2-2 StC2-1 2K. Short Creek transect StC2 Short Cr eek Shawnee Cr ee k N 200 FEET 50 METERS 100 200 FEET 50 METERS 100 200 FEET 50 METERS 200 FEET 50 METERS 200 FEET 50 METERS 200 FEET 50 METERS 200 FEET 50 METERS 200 FEET 50 METERS 200 FEET 50 METERS 100 FEET 25 METERS Figure 2.  Location of surficial-soil sampling sites and coring sites in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas. (Note: Because the tributary streams are shown as linear, rather than two-dimensional, features in figures 2B–2U, the sampling sites are closer to the channels than they appear.)—Continued

Methods    9 N SB1-1 SB1-2 2L. Spring Branch transect SB1 Spring Bra nch SB2-3 SB2-2 SB2-1 2M. Spring Branch transect SB2 Spring Br anch SB3-2 SB3-1 2N. Spring Branch transect SB3 Spring Br anch TrC1-4 TrC1-3 TrC1-2 TrC1-1 2O. Tar Creek transect TrC1 Tar C r eek TrC2-4 TrC2-3 TrC2-2 TrC2-1 2P. Tar Creek transect TrC2 Tar Creek TrC3-4 TrC3-3 TrC3-2 TrC3-1 2Q. Tar Creek transect TrC3 Tar Creek TkC1-3 TkC1-2 TkC1-1 2R. Turkey Creek transect TkC1 Turkey Creek WC1-3 WC1-2 WC1-1 2S. Willow Creek transect WC1 Willow Creek WC2-4 WC2-3 WC2-2 WC2-1 2T. Willow Creek transect WC2 Willow Creek WC3-2 WC3-1 2U. Willow Creek transect WC3 Willow Cr eek 100 FEET 25 METERS 100 FEET 25 METERS 100 FEET 25 METERS 100 FEET 25 METERS 100 FEET 25 METERS 100 FEET 25 METERS 100 FEET 25 METERS 200 FEET 50 METERS 200 FEET 50 METERS 200 FEET 50 METERS Figure 2.  Location of surficial-soil sampling sites and coring sites in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas. (Note: Because the tributary streams are shown as linear, rather than two-dimensional, features in figures 2B–2U, the sampling sites are closer to the channels than they appear.)—Continued

10    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas and organic and total carbon (table 1). The nine samples were analyzed as bulk samples and as the less than 63-µm fraction. Analyses of the nine samples by combustion and various spectroscopic methods were performed at the USGS Sediment Trace Element Partitioning Laboratory in Atlanta, Georgia. Analyses of samples for total nitrogen and carbon concentrations were performed using the methods described by Horowitz and others (2001). Analyses for total phosphorus and trace elements were performed using the methods described by Fishman and Friedman (1989), Arbo­gast (1996), and Briggs and Meier (1999). The spectroscopic methods used provided total (at least 95 percent of the element present) rather than total-recoverable concentrations. For cadmium, lead, and zinc, analysis of two duplicate samples (that is, two original samples were split and both halves were analyzed) indicated that the analytical variability for the spectroscopic methods was about 10 percent or less. Data for the additional constituents are presented but not discussed (see tables 1–3 and 1–5 at the back of this report). Particle-Size Analysis A particle-size analysis was completed for each surficialsoil sample to determine the percentage of sand, silt, and clay in each sample. The particle-size determinations were completed by ARDL, Inc., Mt. Vernon, Illinois, using hydrometer analyses following American Society for Testing and Materials method D422 (American Society for Testing and Materials International, 2007). Flood-Plain Coring and Analysis Site Selection Spring River flood-plain coring sites were selected to be representative of conditions throughout the Cherokee County, Kansas, superfund site as affected by tributary inputs. Coring sites were established along six transects that generally were oriented perpendicular to the Spring River. The six transect locations (fig. 2A) were as follows: (1) between the Missouri State line and the Center Creek confluence (transect T1), (2) between the Center and Turkey Creek confluences (transect T2), (3) between the Turkey and Short Creek confluences (transect T3), (4) between the Short Creek confluence and Empire Lake (transect T4), (5) between Empire Lake and the Willow Creek confluence (transect T5), and (6) downstream from the Spring Branch confluence near the Oklahoma State line (transect T6). Along each transect, five to seven coring sites were selected at an approximately equal distance interval that ranged from about 800 ft for transects T3 and T6 to about 1,300 ft for transect T5 (fig. 2A). The distance interval varied among transects as dictated by flood-plain width, number of sites per transect, site conditions, and property access. The latitude and longitude coordinates for each coring site, obtained using GPS technology, are provided in table 1–2 at the back of this report. Tributary flood-plain coring sites were collocated with the surficial-soil sampling sites. At each site, the core was collected at or near the center of where the five-point surficial-soil sample Table 1.  Chemical analyses performed on surficial-soil and core samples from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009–11. [Number in parentheses is the detection limit or method reporting limit for each constituent. mg/kg, milligrams per kilogram; %, percent dry weight] Analyses using x-ray fluorescence methods1 Cadmium (50–150 mg/kg) Lead (10–100 mg/kg) Zinc (10–100 mg/kg) Analyses using combustion and various spectroscopic methods2 Aluminum (0.1%) Chromium (1.0 mg/kg) Molybdenum (1.0 mg/kg) Sulfur (0.01%) Antimony (0.1 mg/kg) Cobalt (1.0 mg/kg) Nickel (1.0 mg/kg) Thallium (50 mg/kg) Arsenic (0.1 mg/kg) Copper (1.0 mg/kg) Nitrogen, total (100 mg/kg) Tin (1.0 mg/kg) Barium (1.0 mg/kg) Iron (0.1%) Phosphorus, total (50 mg/kg) Titanium (0.01%) Beryllium (0.1 mg/kg) Lead (1.0 mg/kg) Selenium (0.1 mg/kg) Uranium (50 mg/kg) Cadmium (0.1 mg/kg) Lithium (1.0 mg/kg) Silver (0.5 mg/kg) Vanadium (1.0 mg/kg) Carbon, organic (0.1%) Manganese (10.0 mg/kg) Strontium (1.0 mg/kg) Zinc (1.0 mg/kg) Carbon, total (0.1%) 1The detection limit varies depending on several factors including the constituent of interest, the type of detector used, the type and strength of excitation source, count time used to irradiate the sample, physical matrix effects, chemical matrix effects, and interelement spectral interferences (U.S. Environmental Protection Agency, 2007). 2Carbon and nitrogen analyzed by combustion. Antimony, arsenic, and selenium analyzed by hydride generation inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Cadmium, lead, and silver analyzed by flame atomic absorption. Remaining constituents analyzed by ICP-AES (Fishman and Fried­ man, 1989; Arbogast, 1996; Briggs and Meier, 1999; Horowitz and others, 2001).

Quality Control    11 was collected. Thus, the latitude and longitude coordinates for each core were the same as for the surficial-soil sample collected at each site (table 1–1 at the back of this report). Core Collection and Preparation The Spring River flood-plain cores were collected in the fall of 2009 and the spring of 2010 using a truck- or tractormounted Geoprobe® GH-40 direct-push system. A total of 34 cores were collected. Cores collected along transects T1, T3, and T6 were pushed to a depth of 16 ft or refusal. Cores collected along transects T2, T4, and T5 were pushed to a depth of 8 ft or refusal. Coring sites are shown in figure 2A. Each core was collected in 4-ft increments by successive core runs using a 1.5-in. diameter by 4-ft long core barrel with an acetate liner. The coring equipment was thoroughly washed with a laboratory detergent solution and rinsed with tap water and deionized water prior to each core run. A new acetate liner was used for each core run. Following collection, the cores were placed in cardboard core boxes, transported to a secure storage facility, and laid out on tables. Approximately one-third of the liner was removed to allow the cores to air dry. Also, about one-third of each core was removed with a stainless steel knife to expose the inner material for geologic description and chemical analysis. Compaction affected all collected cores as evidenced by the fact that the length of each recovered core was always less than the depth of penetration. Depth measurements along each core were adjusted to account for compaction, which was assumed to be uniform for each core. The adjusted depth intervals were computed for each core using the ratio of the length of recovered core to the depth of penetration. The tributary flood-plain cores were collected in the spring of 2011 using a 24-in. hand-push corer. A core was collected at 54 sampling sites. At five sites, a core was not collected typically because shallow rock was encountered, which prevented penetration of the corer. Each core was collected to a depth of 15 in. or refusal. A new 1-in. diameter butyrate liner was used for each site. Compaction affected all collected cores. Following collection, the cores were segmented to remove the 6- and 12-in. depth intervals for subsequent chemical analysis. Identification of the 6- and 12-in. depth intervals for each core required that compaction be accounted for as described previously. Each core was cut at the adjusted depth intervals to expose the estimated 6- and 12-in. depths. For a few cores, shallower depth intervals were used because refusal was encountered before the target depth (15 in.) was achieved. A total of 105 core segments were obtained from the 54 cores. The core segments were air dried. Chemical Analysis All flood-plain cores were analyzed for cadmium, lead, and zinc using XRF (U.S. Environmental Protection Agency, 2007). The Spring River core samples were analyzed at the USEPA field office in Galena, Kansas. The tributary core samples were analyzed at the USEPA office in Kansas City, Kansas. All core samples were analyzed as bulk samples. Generally, for the Spring River cores, the top 2-in. interval of each core was analyzed. Then, the remainder of each core was analyzed about every one-third of a foot (adjusted for compaction as necessary). All Spring River core samples were analyzed using a handheld XRF instrument. For the tributary cores, the 6- and 12-in. depths (adjusted for compaction as necessary) were analyzed using a stationary XRF instrument. Quality Control Samples Collected from the Spring River Flood Plain Quality control for the XRF chemical analysis of the Spring River flood-plain surficial-soil samples involved several parts. To determine the analytical variability of the XRF method, 10 bulk samples and 11 less than 63-µm samples were analyzed 3 times. Additional verification was provided by the analysis of split-replicate samples (three sampling sites) using spectroscopic methods. Within-site variability of the surficial soils was assessed using sequential five-point replicate samples (three sampling sites) and a 17-point sampling technique (three sampling sites) to determine the representativeness of the five-point sampling technique. In the 17-point technique, the soil was sampled at the selected center location and at a sampling radius of 50 and 100 ft north, northeast, east, southeast, south, southwest, west, and northwest of the center. Finally, the accuracy of the XRF method was evaluated using standard reference samples and blank samples, which were repeatedly analyzed before, during, and after the analysis of the surficial-soil and core samples. The evaluation of XRF analytical variability was constrained by some results that were less than the XRF limit of detection (LOD). For cadmium, concentrations in the bulk samples were less than the XRF LOD for at least 2 of the 3 analyses for 8 of the 10 samples. For the remaining two samples, XRF-measured cadmium concentrations were within ±3 and ±35 percent of the mean concentration for each sample. Similarly, cadmium concentrations for the less than 63-µm samples were less than the XRF LOD for at least 2 of the 3 analyses for 10 of the 11 samples. For the remaining sample, XRF-measured cadmium concentrations were within ±37 percent of the mean concentration. For lead, XRF analytical variability for the bulk and less than 63-µm samples ranged from ±2 to ±38 percent (nine samples) and ±2 to ±18 percent (four samples), respectively. For zinc, XRF analytical variability for the bulk and less than 63-µm samples ranged from ±2 to ±33 percent (10 samples) and ±3 to ±27 percent (eight samples), respectively.

12    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas A comparison of cadmium concentrations for the bulk and less than 63-µm samples determined by XRF and spectroscopic methods was not possible because the cadmium concentrations were less than the XRF LOD for all three samples (SRF-2, SRF-5, and SRF-10). Lead and zinc concentrations for the three bulk samples determined by spectroscopic methods averaged 55 and 28 percent larger, respectively (table 2). A comparison of lead concentrations in the less than 63-µm samples was constrained because concentrations were less than the XRF LOD for two of the three samples. For the remaining sample, the lead concentration determined by spectroscopic methods was 51 percent larger. Zinc concentrations for the less than 63-µm samples determined by spectroscopic methods averaged 80 percent larger (table 2). A complete list of results for the three split-replicate samples analyzed by combustion and spectroscopic methods is provided in table 1–3 at the back of this report. Within-site variability was assessed to determine the representativeness of the five-point sampling technique. At three sampling sites (SRF-1, SRF-3, and SRF-7), a sequential five-point replicate sample was collected immediately next to the original five-point sample. Also, at three sampling sites (SRF-4, SRF-9, and SRF-29), an additional sample was collected using the 17-point sampling technique. An assessment of within-site variability for cadmium using the five-point bulk samples was not possible because the cadmium concentrations for all original, sequentialreplicate, and 17-point samples were less than the XRF LOD. On average, the lead and zinc concentrations in the three sequential-replicate bulk samples were within ±11 and ±15 percent of the concentrations in the three original bulk samples, respectively. For lead, the average variability for the sequential-replicate samples was computed using only two sampling sites because the lead concentration was less than the XRF LOD for one of the original bulk samples. On average, the lead and zinc concentrations for the three 17-point bulk samples were within ±27 and ±23 percent of the concentrations in the three five-point bulk samples, respectively. An assessment of within-site variability using the less than 63-µm samples was constrained by measured concentrations less than the XRF LOD. For cadmium, an assessment was not possible because the results for all fivepoint and 17-point samples were less than the XRF LOD. Likewise, for lead, an assessment was not possible using the original and sequential-replicate five-point samples because all results were less than the XRF LOD. For the comparison using the five- and 17-point samples, all results were less than the XRF LOD for two of the three sampling sites. For the remaining sampling site, the lead concentration for the 17-point sample was 43 percent larger than the five-point sample. On average, zinc concentrations for the sequentialreplicate five-point samples were within ±57 percent of the concentrations in the original five-point samples. On average, zinc concentrations for the 17-point samples were within ±10 percent of the concentrations in the five-point samples. For zinc, the average variability for the 17-point samples was computed using only two sampling sites because the zinc concentration was less than the XRF LOD for one of the fivepoint less than 63-µm samples. Quality control for the XRF analysis of the Spring River flood-plain cores involved two parts. To determine the analytical variability of the XRF method, two or three intervals of each core typically were analyzed two or three times. The accuracy of the XRF method also was evaluated using standard reference samples and blank samples which were repeatedly analyzed before, during, and after the analysis of the cores. Repeat analyses were completed for 75 core intervals. Analytical variability for each trace element only was computed using the core intervals for which all results were larger than the XRF LOD. For cadmium (50 core intervals used), XRF-measured concentrations were on average within ±14 percent of the mean concentration for each core interval. XRF-measured concentrations of lead (33 core intervals used) were on average within ±15 percent of the mean concentration for each core interval. For zinc (51 core intervals used), XRFmeasured concentrations were on average within ±10 percent of the mean concentration for each core interval. Results for the analysis of standard reference samples using XRF are provided in table 1–4 at the back of this report. A target goal for acceptable results of analysis of reference samples was within ±10 percent of the most probable value (MPV) for the constituent, except when constituent concentrations were near or less than method reporting limits. For the reference sample with a cadmium MPV of 500 mg/kg, cadmium concentrations were within ±10 percent of the MPV for 89 percent of the results (47 analyses). Only 1 of 42 results was within ±10 percent for the reference sample with a cadmium MPV of 28.2 mg/kg. Cadmium concentrations for the remaining 41 results averaged 50 percent larger than the MPV. For the reference sample with a cadmium MPV of 1.12 mg/kg, analytical precision could not be determined for eight of nine results because the MPV was less than the XRF LOD (table 1–4). The analytical precision of XRF for lead also was assessed using three standard reference samples. For the reference sample with a lead MPV of 2,700 mg/kg, lead concentrations were within ±10 percent of the MPV for 95 percent of the results (43 analyses). Lead concentrations were within ±10 percent of the MPV for 87 percent of the results (47 analyses) for the reference sample with a lead MPV of 500 mg/kg. For the reference sample with a lead MPV of 27 mg/kg, analytical precision could not be determined for five of nine results because the measured concentration was less than the XRF LOD. The remaining four results ranged from about 4 percent larger to about 33 percent less than the MPV (table 1–4). The analytical precision of XRF for zinc was assessed using two standard reference samples. For the reference sample with a zinc MPV of 3,800 mg/kg, zinc concentrations

Quality Control    13 Table 2.  Cadmium, lead, and zinc concentrations for three surficial-soil samples collected from the Spring River flood plain and six surficial-soil samples collected from the tributary flood plains, Cherokee County, Kansas, and analyzed by x-ray fluorescence (XRF) and spectroscopic methods (SM). [mg/kg, milligrams per kilogram; less than; LOD, limit of detection; --, not determined] Sample identifier (figs. 2A–2U) Concentrations in bulk sample (mg/kg) Concentrations in less than 63-micrometer fraction (mg/kg) XRF1 SM Difference (percent) XRF1 SM Difference (percent) Cadmium2 Spring River sampling sites SRF-2 SRF-5 SRF-10 Tributary sampling sites BC2-1 SB2-2 SnC2-1 StC1-2 TrC1-3 WC2-1 Lead2 Spring River sampling sites SRF-2 SRF-5 SRF-10 Tributary sampling sites BC2-1 SB2-2 SnC2-1 StC1-2 4,897 5,600 3,284 6,100 TrC1-3 4,278 8,300 2,016 8,000 WC2-1 Zinc2 Spring River sampling sites SRF-2 SRF-5 SRF-10 1,200 Tributary sampling sites BC2-1 SB2-2 3,149 3,400 2,940 3,500 SnC2-1 StC1-2 10,700 11,000 5,436 11,000 TrC1-3 15,300 26,000 6,896 26,000 WC2-1 1,511 1,700 1,290 1,600 1The limit of detection (LOD) for XRF analyses varies depending on several factors. See footnote on table 1 for more information. 2For samples SRF-2 (bulk sample only) and SRF-10 (bulk sample and <63-micrometer sample), the reported concentration estimated using XRF was com­ puted as the average of three XRF analyses that were done for each sample. For all tributary samples, the reported concentration was the average of three XRF analyses that were done for each sample.

14    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas were within ±10 percent of the MPV for 91 percent of the results (43 analyses). For the reference sample with a zinc MPV of 46 mg/kg, 33 percent of the results (9 analyses) were within ±10 percent of the MPV (table 1–4). A total of 41 blank samples were analyzed before, during, and after the XRF analyses of the surficial-soil and core samples. Lead and zinc concentrations were less than the XRF LOD for all 41 samples. Cadmium concentrations were less than the XRF LOD for 38 of 41 samples. The variability described in the preceding paragraphs likely was caused, in part, by the use of a handheld (as opposed to stationary) XRF instrument for the chemical analyses of the surficial-soil and core samples. Samples Collected from the Tributary Flood Plains Quality control for the XRF chemical analysis of the tributary flood-plain surficial-soil and core samples involved several parts. Each tributary surficial-soil and core sample was analyzed multiple times until three results were obtained that were within 10 percent of the mean concentration. To assess analytical variability of the XRF method, the first three results for each sample were used. Additional verification was provided by the analysis of split-replicate samples (six sampling sites) using spectroscopic methods. Within-site variability of the surficial soils was assessed using sequential five-point replicate samples (six sampling sites) and the 17-point sampling technique (five sampling sites) to determine the representativeness of the five-point sampling technique. In the 17-point technique, the soil was sampled at the selected center location and at 100 and 50 percent of the site-specific sampling radius north, northeast, east, southeast, south, southwest, west, and northwest of the center. Finally, the accuracy of the XRF method was evaluated using standard reference samples and blank samples that were repeatedly analyzed before, during, and after the analysis of the surficialsoil and core samples. The evaluation of XRF analytical variability for the surficial-soil samples was constrained by cadmium results that were less than the XRF LOD. Cadmium concentrations in the bulk surficial-soil samples were less than the XRF LOD for at least 2 of the 3 analyses for 53 of the 70 samples. For the remaining 17 samples, XRF-measured cadmium concentrations ranged from 0 to ±29 percent of the mean concentration for each sample with an average variability of ±11 percent. Cadmium concentrations for the less than 63-µm samples were less than the XRF LOD for all three analyses for 66 of the 70 samples. For the remaining four samples, XRF-measured cadmium concentrations ranged from ±7 to ±42 percent of the mean concentration. For lead, analytical variability for the bulk samples ranged from ±1 to ±12 percent with an average variability of ±4 percent (70 samples). Analytical variability for lead concentrations in the less than 63-µm samples ranged from ±1 to ±33 percent with an average variability of ±8 percent (69 samples). For zinc, analytical variability for the bulk samples ranged from 0 to ±12 percent with an average variability of ±3 percent (70 samples). Analytical variability for zinc concentrations in the less than 63-µm samples ranged from ±1 to ±25 percent with an average variability of ±3 percent (70 samples). The evaluation of XRF analytical variability for the core samples also was constrained by cadmium results that were less than the XRF LOD. For cadmium, analytical variability ranged from 0 to ±28 percent from the mean concentration for each sample with an average variability of ±10 percent (21 samples). Analytical variability for lead ranged from ±1 to ±42 percent with an average variability of ±9 percent (100 samples). For zinc, analytical variability ranged from 0 to ±26 percent with an average variability of ±4 percent (104 samples). A comparison of cadmium concentrations for the bulk and less than 63-µm surficial-soil samples determined by XRF and spectroscopic methods was constrained because most of the concentrations were less than the XRF LOD. For two bulk samples, cadmium concentrations determined by spectroscopic methods averaged 76 percent larger (table 2). Lead concentrations for the bulk samples determined by spectroscopic methods ranged from 56 percent smaller to 94 percent larger. For the less than 63-µm samples, lead concentrations determined by spectroscopic methods ranged from 14 to 297 percent larger (table 2). Zinc concentrations for the bulk samples determined by spectroscopic methods ranged from 3 to 70 percent larger. For the less than 63-µm samples, zinc concentrations determined by spectroscopic methods ranged from 19 to 277 percent larger (table 2). Overall, including the results for both the Spring River and tributary flood plains, lead and zinc concentrations determined by spectroscopic methods typically were larger. A complete list of results for the six split-replicate samples analyzed by combustion and spectroscopic methods is provided in table 1–5 at the back of this report. Within-site variability was assessed to determine the representativeness of the five-point sampling technique. A sequential five-point replicate sample was collected immediately next to the original five-point sample at six sampling sites (BC2-2, CC1-3, SB2-1, TrC1-2, TkC1-3, and WC1-1). A 17-point sample was collected at five sampling sites (BC1-2, CC1-2, ShC2-1, SB2-3, and TrC3-1). An assessment of within-site variability for cadmium using the five-point bulk samples was constrained because the cadmium concentrations for five of the six sequential-replicate sampling sites, and all five of the 17-point sampling sites, were less than the XRF LOD. For the single site with detectable cadmium concentrations, the sequential-replicate sample had a cadmium concentration that was 3 percent larger. On average, the lead and zinc concentrations in the six sequentialreplicate bulk samples were within ±8 and ±4 percent of the concentrations in the six original five-point bulk samples, respectively. On average, the lead and zinc concentrations for the five 17-point bulk samples were within ±11 and

Sediment-Quality Guidelines    15 ±14 percent of the concentrations in the five original five-point bulk samples, respectively. An assessment of within-site variability using the less than 63-µm samples was not possible for cadmium because the cadmium concentrations for all original, sequentialreplicate, and 17-point samples were less than the XRF LOD. On average, lead and zinc concentrations in the six sequentialreplicate less than 63-µm samples were within ±10 and ±15 percent of the concentrations in the six original less than 63-µm samples, respectively. On average, the lead and zinc concentrations for the five 17-point less than 63-µm samples were within ±19 and ±13 percent of the concentrations in the five original less than 63-µm samples, respectively. For lead, the average variability for the 17-point samples was computed using only four sampling sites because the lead concentration was less than the XRF LOD for one of the original less than 63-µm samples. Results for the analysis of standard reference samples using XRF are provided in table 1–4 at the back of this report. A target goal for acceptable results of analysis of reference samples was within ±10 percent of the MPV for the constituent, except when constituent concentrations were near or less than method reporting limits. For the reference sample with a cadmium MPV of 500 mg/kg, cadmium concentrations were within ±10 percent of the MPV for 92 percent of the results (36 analyses). Only 24 percent of the results (34 analyses) were within ±10 percent for the reference sample with a cadmium MPV of 28.2 mg/kg. For the reference sample with a cadmium MPV of 1.12 mg/kg, analytical precision could not be determined because the MPV was less than the XRF LOD (table 1–4). The analytical precision of XRF for lead also was assessed using three standard reference samples. For the reference sample with a lead MPV of 2,700 mg/kg, lead concentrations were within ±10 percent of the MPV for 100 percent of the results (36 analyses). Lead concentrations were within ±10 percent for 81 percent of the results (36 analyses) for the reference sample with a lead MPV of 500 mg/kg. For the reference sample with a lead MPV of 27 mg/kg, only 8 percent of the results (36 analyses) were within ±10 percent (table 1–4). The analytical precision of XRF for zinc was assessed using two standard reference samples. For the reference sample with a zinc MPV of 3,800 mg/kg, zinc concentrations were within ±10 percent of the MPV for only 14 percent of the results (36 analyses); however, 100 percent of the results were within ±13 percent of the MPV. For the reference sample with a zinc MPV of 46 mg/kg, none of the results (36 analyses) were within ±10 percent. On average, the results were 45 percent less than the MPV (table 1–4). A total of 24 blank samples were analyzed before, during, and after the XRF analyses of the surficial-soil and core samples. Cadmium, lead, and zinc concentrations were less than the XRF LOD for all 24 samples. Sediment-Quality Guidelines The USEPA has adopted nonenforceable sedi­mentquality guidelines (SQGs) in the form of level-of-concern concentrations for several trace elements (U.S. Environmental Protection Agency, 1997). These level-of-concern concentrations were derived from biological-effects correlations made on the basis of paired onsite and labora­ tory data to relate incidence of adverse biological effects in aquatic organisms to dry-weight sedi­ment concentrations. Two such level-of-concern guidelines adopted by USEPA are referred to as the threshold-effects level (TEL) and the probable-effects level (PEL). The TEL is assumed to represent the concentration below which toxic aquatic biological effects rarely occur. In the range of con­centrations between the TEL and PEL, toxic effects occasionally occur. Toxic effects usually or frequently occur at concentrations above the PEL. USEPA cautions that the TEL and PEL guidelines are intended for use as screening tools for possible hazardous levels of chemicals and are not regulatory criteria. This cautionary state­ment is made because, although biologicaleffects correlation identifies level-of-concern concen­trations associated with the likelihood of adverse organism response, the comparison may not demonstrate that a particular chemical is solely responsible. In fact, biological-effects correlations may not indicate direct cause-and-effect relations because sediment may contain a mixture of chemicals that contribute to the adverse effects to some degree. Thus, for any given site, these guidelines may be over- or underprotective (U.S. Environmental Protection Agency, 1997). MacDonald and others (2000) developed consensusbased SQGs for several trace elements that were computed as the geometric mean of several previously published SQGs. The consensus-based SQGs consist of a threshold-effect concentration (TEC) and a probable-effect concentration (PEC). The TEC rep­resents the concentration below which adverse effects are not expected to occur, whereas the PEC represents the concentration above which adverse effects are expected to occur more often than not. An evaluation of the reliability of the SQGs indicated that most of the individual TECs and PECs provide an accurate basis for predicting the presence or absence of sediment toxicity (Mac­Donald and others, 2000). A comparison of the two sets of trace-element SQGs indicated some differences (table 3). The largest difference was for the zinc PEL and PEC. In this case, the PEC (459 mg/kg) was about 69 percent larger than the PEL (271 mg/kg). In 2009, TSMD-specific PECs for cadmium, lead and zinc were developed. The TSMD-specific PECs represent sediment concentrations predicted to reduce the survival of the amphipod Hyalella azteca (a species known to be sensitive

16    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas to trace element contamination) by 10 percent relative to reference conditions in the TSMD (Ingersoll and others, 2009). In this study, both the general PECs provided by MacDonald and others (2000) and the TSMD-specific PECs provided by Ingersoll and others (2009) were used to assess sediment quality. A comparison of the PECs is provided in table 3. Background Information for Trace Elements Trace elements are important determinants of sediment quality because of their potential toxicity to living organisms (Forstner and Wittman, 1981; Smol, 2002; Luoma and Rainbow, 2008). Trace elements may be defined as ele­ments that typically are found in the environment in relatively low (less than 0.1 percent) concentrations (Pais and Jones, 1997; Adriano, 2001). Using this definition, the majority of the elements ana­lyzed in this study may be considered trace elements. Exceptions, which are some of the abundant rockforming elements, include aluminum and iron (Adriano, 2001). Trace elements in sediment and soil originate naturally from the rock within a basin. In addition to natural sources (for example, ore deposits), elevated concentrations of trace elements may be attributable to several human-related sources including fertilizers, liming materials, pesticides, irrigation water, animal and human wastes, coal-combustion residues, leaching from landfills, mining, metal-smelting industries, and automo­bile emissions (Forstner and Wittman, 1981; Davies, 1983; Adriano, 2001; Luoma and Rainbow, 2008). The health of living organisms is dependent on a sufficient intake of various trace ele­ments. Many elements, such as cobalt, copper, iron, manganese, and zinc, are essential for plants, animals, and humans. Other elements, such as arsenic and chromium, are required by animals and humans but are not essential for plants. Nonessential elements for plants, animals, and humans include cadmium, mercury, and lead (Lide, 1993; Pais and Jones, 1997; Adriano, 2001; Marmiroli and Maestri, 2008). Toxicity is a function of several factors including the type of organism, availability of a trace element in the environment, and its potential to bioaccumulate once in the food chain. The daily intake of trace elements by animals and humans may be classified as deficient, optimal, or toxic. Most, if not all, trace elements may be toxic in animals and humans if the concentrations are sufficiently large (Pais and Jones, 1997; Smol, 2002; Luoma and Rainbow, 2008). Information on the bioaccumulation index (Pais and Jones, 1997) for cadmium, lead, and zinc is provided in table 3. The bioaccumulation index indicates the relative potential of a trace element to bioaccumulate in organisms. Flood-Plain Occurrence of MiningRelated Lead and Zinc This section describes the occurrence of lead and zinc in surficial-soil samples and cores collected from the Spring River flood plain and tributary flood plains. Cadmium data (provided in tables 1–6 through 1–8 at the back of this report) are not discussed because the XRF results either were less than the XRF LOD or at relatively small concentrations that were of questionable accuracy. In the following sections, the mean lead and zinc concentrations determined by XRF were used for all samples that were analyzed three times (that is, selected Spring River flood-plain samples and all tributary flood-plain samples). If one or two of the three XRF results for a sample were less than the LOD, the final result was reported as less than the largest value that was measured. Sediment quality was assessed with reference to general and TSMD-specific PECs (table 3). For perspective in the following sections, it is helpful to know the background concentrations of lead and zinc for the study area. Based on an analysis of streambed-sediment samples collected at sites minimally affected by historical lead and zinc mining within the Cherokee County superfund site, Pope (2005) estimated the background sediment concentrations of lead and zinc to be 20 and 100 mg/kg, respectively. Nationally, Horowitz and others (1991) estimated the background concentrations of lead and zinc in sediment to be 23 and 88 mg/kg, respectively. Table 3.  Sediment-quality guidelines (SQGs) and associated bioaccumulation index for cadmium, lead, and zinc. [Values in milligrams per kilogram. Shading indicates guidelines to which sediment concentrations were compared in this report. USEPA, U.S. Environmental Protection Agency; TEL, threshold-effects level; PEL, probable-effects level; TEC, threshold-effect concentration; PEC, probable-effect concentration] Trace element USEPA (1997)1 MacDonald and others (2000)1 Ingersoll and others (2009)2 Bio-accumulation index3 TEL PEL TEC PEC PEC Cadmium Moderate Lead Moderate Zinc 2,083 High 1General sediment-quality guidelines. 2Sediment-quality guidelines specific to the Tri-State Mining District. 3Bioaccumulation index information for trace elements from Pais and Jones (1997).

Flood-Plain Occurrence of Mining-Related Lead and Zinc    17 Spring River Of the 30 surficial-soil sites sampled in the Spring River flood plain, lead concentrations larger than the PECs were only measured for two sites—SRF-15 and SRF-19. Site SRF15, located near the Turkey Creek confluence (fig. 3), had lead concentrations in the bulk and less than 63-µm samples of 310 and 314 mg/kg, respectively (table 4). These concentrations were more than twice the general (128 mg/kg) and TSMDspecific (150 mg/kg) PECs. Site SRF-19, located near the Short Creek confluence (fig. 3), had lead concentrations in the bulk and less than 63-µm samples of 2,180 and 1,980 mg/kg, respectively (table 4). These concentrations were more than an order of magnitude larger than the general and TSMD-specific PECs. Zinc concentrations in the bulk and less than 63-µm samples exceeded the general PEC (459 mg/kg) for four sites—SRF-10 (located downstream from the Turkey Creek confluence), SRF-15, SRF-19, and SRF-27 (located downstream from Empire Lake) (fig. 4, table 4). Zinc concentrations in the bulk and less than 63-µm samples approached the TSMD-specific PEC (2,083 mg/kg) for site SRF-15 and were more than twice the TSMD-specific PEC for site SRF-19 (table 4). Contamination at depth was infrequent in the Spring River flood plain. Of the 34 cores collected along six tran­ sects (fig. 2A), lead concentrations larger than the general and TSMD-specific PECs were only measured in 5 (15 percent) of the cores (T1-2, T2-1, T4-2, T4-3, and T6-1). Zinc concentra­ tions larger than the general PEC were only measured in 10 (29 percent) of the cores (T1-2, T2-1, T2-2, T4-1, T4-2, T4-3, T5-2, T5-3, T5-4, and T6-1). Zinc concentrations larger than the TSMD-specific PEC were only measured in three (9 per­ cent) of the cores (T1-2, T2-1, and T6-1). With two excep­ tions, the contamination typically was confined to the upper 2 ft of the core and frequently was confined to the upper 6 in. One exception was core T2-1, located near the Center Creek confluence (figs. 1, 2A), in which zinc concentrations larger than the general PEC were measured to a depth of about 7 ft. In the upper 1.2 ft of this core, zinc concentrations were about two to six times larger than the TSMD-specific PEC. The other exception was core T6-1, located downstream from the Willow Creek and Spring Branch confluences (figs. 1, 2A), in which lead and zinc concentrations larger than the general or TSMDspecific PECs, or both, were measured to respective depths of 2.8 and 3.5 ft. The complete list of XRF results for all 34 cores is provided in table 1–7 at the back of this report. Brush Creek The Brush Creek basin does not include any lead- and zinc-mined areas (fig. 1). Surficial-soil and core samples collected at six sites (two transects, figs. 2A–2C) in the Brush Creek flood plain had lead and zinc concentrations (bulk and less than 63 µm) that were substantially less than the general PECs (figs. 3 and 4, table 5). Cow Creek The Cow Creek basin includes at least two lead- and zinc-mined areas (fig. 1). Surficial-soil and core samples collected from transect CC1 (three sites, figs. 2A and 2D), located along the main stem of Cow Creek, had lead and zinc concentrations (bulk and less than 63 µm) that were sub­ stantially less than the general PECs (figs. 3 and 4, table 6). Surficial-soil and core samples collected from transect CC2 (two sites, figs. 2A and 2E), located along an unnamed tribu­ tary downstream from a mined area, had lead concentrations (bulk and less than 63 µm) that were less than the general PEC. However, zinc concentrations (bulk and less than 63 µm) in the surficial-soil samples collected from both sites along transect CC2 were greater than the general PEC. At site CC2-1, zinc concentrations for the bulk samples at the 6- and 12-in. depths were greater than the TSMD-specific PEC (figs. 3 and 4, table 6). Shawnee Creek The Shawnee Creek basin includes a few lead- and zincmined areas that primarily are located in the upland between Shawnee Creek and the Spring River (fig. 1). Surficial-soil and core samples collected at five sites (two transects, figs. 2A, 2F, and 2G) in the Shawnee Creek flood plain had lead and zinc concentrations (bulk and less than 63 µm) that were substantially less than the general PECs (figs. 3 and 4, table 7). Shoal Creek Multiple lead- and zinc-mined areas are located throughout the Shoal Creek basin (fig. 1). At downstream transect ShC1 (figs. 2A and 2H), surficial-soil concentrations greater than the general PECs were measured at one of three sites for lead (site ShC1-1, bulk sample only) and at two of three sites for zinc (sites ShC1-1 and ShC1-3, bulk samples for both sites and less than 63-µm sample for one site) (figs. 3 and 4, table 8). The lead concentration also exceeded the TSMDspecific PEC. At the 6- and 12-in. depths, lead concentrations (bulk samples) were less than the general PEC at all three sites. Zinc concentrations (bulk samples) were greater than the general PEC at the 6- and 12-in. depths at the site located nearest the channel (site ShC1-1) (table 8). At upstream transect ShC2 (figs. 2A and 2I), surficialsoil concentrations greater than the general PECs were typical for lead (three of four sites, bulk samples for all three sites and less than 63-µm sample for one site) and zinc (all four sites, bulk samples for all four sites and less than 63-µm

18    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Empire Lake Baxter Springs Galena Treece 94°40' 45' 94°50' 37°15' 10' 05' 37°00’ Base from U.S. Geological Survey digital data, 1987, 1:100,000 Universal Transverse Mercator projection Zone 15 Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83) Boundary of Cherokee County superfund site EXPLANATION SRF-33 Lead and zinc mined areas Approximate flood-plain extent U.S. Geological Survey surficial-soil sampling site in the Spring River flood plain and site identifier U.S. Geological Survey surficial-soil sampling and coring transect in tributary flood plain and transect identifier. Number of slices in the circle indicates how many sites are on the transect. See figures 2B–2U Lead concentration, in milligrams per kilogram Short Creek S p r n g R ve r Sh oa

re e k Sp r n g Ri e r Tar Creek Spring Rive r SB1 Willow Cr eek TrC1 B r u s h re ek Turkey Creek Center Creek MILES KILOMETERS S ha w n ee

r e ek Lead and zinc mined areas from Brichta, 1960 Approximate flood-plain extent from Federal Emergency Management Agency (2008) o w

r e e k !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( Kansas Missouri Oklahoma Map area SRF-1 SRF-3 SRF-2 SRF-4 SRF-19 SRF-17 SRF-18 SRF-11 SRF-16 SRF-13 SRF-9 SRF-7 SRF-14 SRF-6 SRF-15 SRF-10 SRF-5 SRF-20 SRF-23 SRF-22 SRF-26 SRF-25 SRF-29 SRF-21 SRF-33 SRF-32 SRF-31 SRF-28 SRF-27 SRF-24 StC2 StC1 TkC1 SnC1 ShC2 SnC2 SB2 WC1 ShC1 WC2 TrC2 TrC3 WC3 BC2 TrC1 BC1 SB1 Less than 128 128–150 Greater than 150 ! ! ! SB3 Figure 3. Lead concentrations in surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011.

Flood-Plain Occurrence of Mining-Related Lead and Zinc    19 Table 4.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil samples collected from the Spring River flood plain, Cherokee County, Kansas, November 2009. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; C, cropland; G, grassland] Surficial-soil sampling site identifier (fig. 2A) Land use1 Percentage of silt and clay in bulk sample Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample2 <63-µm fraction3 Bulk sample2 <63-µm fraction3 SRF-1 SRF-2 SRF-3 <19 SRF-4 <37 SRF-5 SRF-6 G SRF-7 G SRF-9 SRF-10 G SRF-11 SRF-13 SRF-14 SRF-15 G 2,010 2,060 SRF-16 SRF-17 SRF-18 SRF-19 G 2,180 1,980 4,850 4,170 SRF-20 G SRF-21 G SRF-22 G SRF-23 SRF-24 G SRF-25 G SRF-26 G <28 SRF-27 G SRF-28 SRF-29 SRF-31 G SRF-32 SRF-33 G 1Land use on the date the surficial-soil sample was collected. Sampling dates are provided in table 1–1 at the back of this report. 2For samples SRF-1, SRF-3, SRF-4, SRF-10, SRF-15, and SRF-19, the reported concentration estimated using x-ray fluorescence (XRF) was computed as the average of three XRF analyses that were done for each bulk sample. 3For samples SRF-3, SRF-4, SRF-10, SRF-15, SRF-16, SRF-17, SRF-18, SRF-19, SRF-24, and SRF-26, the reported concentration estimated using XRF was computed as the average of three XRF analyses that were done for each less than 63-micrometer sample.

20    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Figure 4. Zinc concentrations in surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011. Empire Lake Baxter Springs Galena Treece 94°40' 45' 94°50' 37°15' 10' 05' 37°00’ Base from U.S. Geological Survey digital data, 1987, 1:100,000 Universal Transverse Mercator projection Zone 15 Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83) Boundary of Cherokee County superfund site EXPLANATION SRF-33 Lead and zinc mined areas Approximate flood-plain extent U.S. Geological Survey surficial-soil sampling site in the Spring River flood plain and site identifier U.S. Geological Survey surficial-soil sampling and coring transect in tributary flood plain and transect identifier. Number of slices in the circle indicates how many sites are on the transect. See figures 2B–2U Zinc concentration, in milligrams per kilogram Lead and zinc mined areas from Brichta, 1960 Approximate flood-plain extent from Federal Emergency Management Agency (2008) Short Creek S p r n g R ve r Sh oa

re e k Sp r n g Ri e r Tar Creek Spring Rive r SB1 Willow Cr eek TrC1 B r u s h re ek Turkey Creek Center Creek MILES KILOMETERS S ha w n ee

r e ek Less than 459 459–2,083 Greater than 2,083 ! ! ! o w

r e e k !( !( !( !( !( !( !( ! !( ! ! ! !( !( ! ! !( ! ! ! ! !( !( !( !( !( !( !( SRF-1 SRF-3 SRF-2 SRF-4 SRF-19 SRF-17 SRF-18 SRF-11 SRF-16 SRF-13 SRF-9 SRF-7 SRF-14 SRF-6 SRF-15 SRF-10 SRF-5 SRF-20 SRF-23 SRF-22 SRF-26 SRF-25 SRF-29 SRF-21 SRF-33 SRF-32 SRF-31 SRF-28 SRF-27 SRF-24 StC2 StC1 TkC1 SnC1 ShC2 SnC2 SB1 WC1 ShC1 WC2 SB3 TrC2 TrC3 WC3 BC2 TrC1 BC1 SB2 Kansas Missouri Oklahoma Map area

Flood-Plain Occurrence of Mining-Related Lead and Zinc    21 samples for three sites) (figs. 3 and 4, table 8). Lead and zinc concentrations (bulk samples) greater than the general PECs were measured at the 6- and 12-in. depths at the site located nearest the channel (site ShC2-1). At the 6-in. depth for that site, the zinc concentration also exceeded the TSMDspecific PEC. For all samples collected along transect ShC2 with lead concentrations greater than the general PEC, the lead concentrations also exceeded the TSMD-specific PEC (table 8). Short Creek Short Creek drains an area that was extensively mined for lead and zinc (fig. 1). The landscape in the vicinity of Galena was so disturbed by mining activity that it came to be known as “Hell’s Half Acre” (Brosius and Sawin, 2001). All surficialsoil and core samples (bulk and less than 63 µm) collected at five sites (two transects, figs. 2A, 2J, and 2K) in the Short Creek flood plain had lead and zinc concentrations that were substantially greater than both the general and TSMD-specific PECs (figs. 3 and 4, table 9). Mining-related contamination was most pronounced at the sampling sites located along downstream transect StC1 (figs. 2A and 2J). At these sites, lead and zinc concentrations ranged up to more than 30 and 6 times greater than the TSMD-specific PECs, respectively (table 9). Spring Branch An extensive lead- and zinc-mined area is located in the upstream part of the Spring Branch basin (fig. 1). Lead and zinc concentrations in the surficial-soil samples (bulk and less than 63 µm) collected at seven sites (three transects, figs. 2A, 2L, 2M, and 2N) typically were greater than both the general and TSMD-specific PECs (figs. 3 and 4, table 10). At depths ranging from 4 to 12 in., lead concentrations (bulk samples) Table 5.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Brush Creek flood plain, Cherokee County, Kansas, April and May 2011. [mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A–2C) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect BC1 (downstream) BC1-1 BC1-2 BC1-3 BC1-4 Transect BC2 (upstream) BC2-1 BC2-2

22    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas typically exceeded the general PEC and frequently exceeded the TSMD-specific PEC. Zinc concentrations (bulk samples) at depths ranging from 4 to 12 in. typically exceeded the general PEC and occasionally exceeded the TSMD-specific PEC (table 10). Tar Creek Within Cherokee County, most of the downstream half of the Tar Creek basin was extensively mined for lead and zinc (fig. 1). Transects TrC1 and TrC2 were located within the extensively mined area whereas transect TrC3 was located upstream from the extensively mined area (fig. 2A). All surficial-soil and core samples collected along transects TrC1 and TrC2 (eight sites, figs. 2O and 2P) had lead and zinc concentrations (bulk and less than 63 µm) that were much larger than both the general and TSMD-specific PECs. For lead, concentrations ranged from about 2 to more than 50 times greater than the TSMD-specific PEC. For zinc, concentrations ranged from 1.3 to 45 times greater than the TSMD-specific PEC (figs. 3 and 4, table 11). All surficial-soil and core samples collected along transect TrC3 (four sites, fig. 2Q) had lead and zinc concentrations (bulk and less than 63 µm) that were substantially less than the general PECs (figs. 3 and 4, table 11). Turkey Creek The Turkey Creek basin includes numerous lead- and zinc-mined areas (fig. 1). All surficial-soil samples collected along transect TkC1 (three sites, figs. 2A and 2R) had lead and zinc concentrations (bulk and less than 63 µm) that were larger than both the general and TSMD-specific PECs (figs. 3 and 4, table 12). At the 6- and 12-in. depth, lead and zinc concentrations (bulk samples) at sites TkC1-1 and TkC1-2 (located north of Turkey Creek, fig. 2R) were much greater than the general and TSMD-specific PECs. However, at site TkC1-3 (located south of Turkey Creek, fig. 2R), only the zinc Table 6.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Cow Creek flood plain, Cherokee County, Kansas, March 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A, 2D, and 2E) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect CC1 (downstream) Transect CC2 (upstream) 1,353 1,050 2,208 9,042 1,477 1,145 1Sampling site located along an unnamed tributary of Cow Creek. The tributary basin includes a historical lead- and zinc-mined area (fig. 1).

Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors    23 concentration (bulk sample) at the 6-in. depth was greater than the general PEC (table 12). Willow Creek Lead- and zinc-mined areas are located in the downstream half of the Willow Creek basin (fig. 1). Transects WC1 and WC2 were located downstream from mined areas, whereas transect WC3 was located upstream from the mined areas (fig. 2A). Surficial-soil and core samples collected along transects WC1 and WC2 (seven sites, figs. 2A, 2S, and 2T) had lead concentrations (bulk and less than 63 µm) that typically were greater than both the general and TSMD-specific PECs. Zinc concentrations for these samples typically were greater than the general PEC but less than the TSMD-specific PEC. All surficial-soil and core samples collected along transect WC3 (two sites, fig. 2U) had lead and zinc concentrations (bulk and less than 63 µm) that were substantially less than the general PECs (figs. 3 and 4, table 13). Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors In this section, the variability of lead and zinc concentrations in the Spring River flood plain and tributary flood plains was interpreted in relation to historical mining activity and other factors. Topics addressed include source effects, downstream effects, distance-from-channel effects, and particle-size effects. Source Effects Sources of sediment to the segment of the Spring River flood plain located within the Cherokee County superfund site include tributaries and the upstream Spring River. Lead and zinc concentrations in surficial-soil samples collected from the Spring River flood plain typically were less than the general Table 7.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Shawnee Creek flood plain, Cherokee County, Kansas, March 2011. [mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A, 2F, and 2G) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect SnC1 (downstream) SnC1-1 SnC1-2 SnC1-3 Transect SnC2 (upstream) SnC2-1 SnC2-2

24    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas PECs even though several tributaries (flood-plain soils and streambed sediment) were substantially contaminated with lead and zinc concentrations that frequently or typically exceeded the general PECs and often exceeded the TSMDspecific PECs (tables 4, 8–13; Pope, 2005). Several possible explanations, singly or in combination, may account for this condition. First, mining-contaminated sediment delivered by tributary inflows during periods of low to moderate Spring River flow may remain largely confined to the Spring River channel. Second, mining-contaminated sediment delivered by tributary inflows may be diluted when mixed with relatively uncontaminated sediment delivered by the upstream Spring River. Third, mining-contaminated sediment delivered by tributary inflows may be immediately transported downstream or, if deposited on the Spring River flood plain, it may subsequently be remobilized and transported downstream. A fourth possibility is that lead and zinc concentrations in Spring River flood-plain surficial-soil samples collected from cropland were diluted by plowing (that is, by mixing the contaminated surficial deposits with underlying “clean” soil). Within the Spring River flood plain, 16 sampling sites were located in cropland and 14 sampling sites were located in grassland (table 4). Lead concentrations in the bulk surficialsoil samples collected from cropland ranged from 14 to 47 mg/kg with a median of 20 mg/kg. In comparison, lead concentrations in the bulk samples collected from grassland ranged from 13 to 2,180 mg/kg with a median of 30 mg/kg (table 4, fig. 3). Zinc concentrations in the bulk samples collected from cropland ranged from 22 to 200 mg/kg with Table 8.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Shoal Creek flood plain, Cherokee County, Kansas, May 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A, 2H, and 2I) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect ShC1 (downstream) ShC1-1 1,269 ShC1-2 ShC1-3 Transect ShC2 (upstream) ShC2-1 2,007 1,255 2,551 1,857 ShC2-2 1,135 ShC2-3 1,133 ShC2-4

Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors    25 a median of 60 mg/kg. In comparison, zinc concentrations in the bulk samples collected from grassland ranged from 32 to 4,850 mg/kg with a median of 102 mg/kg (table 4, fig. 4). These results substantiate the possibility of a cropland-related dilution effect associated with plowing. Such an effect will only be appreciable if the total thickness of contaminated sediment deposited is substantially less than the total depth of the plow layer. Lead and zinc contamination in the tributary flood plains was related to the availability of sources; that is, the amount of historical lead and zinc mining activity in the basins. Typically, the tributary flood-plain surficial-soil sampling sites were located in woodland or grassland (table 1–1). Tributaries with little or no historical mining activity in their basins were Brush, Cow, and Shawnee Creeks (fig. 1). With one exception, lead and zinc concentrations in the surficial soils and subsurface (that is, 6- and 12-in. depths) of these tributary flood plains were substantially less than the general PECs (tables 3, 5, 6, and 7). The exception was transect CC2, which was located along an unnamed tributary of Cow Creek and immediately downstream from a historically mined area (figs. 2A and 2E). Along this transect, zinc concentrations greater than the general PEC were measured for the surficial soil at both sampling sites. At site CC2-1, zinc concentrations at depth exceeded the TSMD-specific PEC (table 6). In an assessment of streambed sediment contamination within the Cherokee County superfund site, Pope (2005) measured lead and zinc concentrations (in the less than 63-µm fraction) for Brush, Cow, and Shawnee Creeks that typically were less than the general PECs. The remaining six tributaries—Shoal Creek, Short Creek, Spring Branch, Tar Creek, Turkey Creek, and Willow Creek—have substantial historically mined areas in their basins (fig. 1). All six tributary flood plains had lead and zinc concentrations that frequently or typically exceeded the general PECs (tables 3, 8–13). Likewise, lead concentrations frequently or typically exceeded the TSMD-specific PEC. With the exception of Shoal and Willow Creeks, zinc concentrations typically exceeded the TSMD-specific PEC (tables 8–13). Similar results were reported for streambedsediment concentrations (less than 63-µm fraction) in the six tributaries (Pope, 2005). Along Tar and Willow Creeks, the longitudinal change in flood-plain contamination, in relation to the location of historically mined areas, was pronounced. For both basins, lead and zinc concentrations in samples collected along the transect located upstream from the historically mined areas (that is, transects TrC3 and WC3; fig. 2A) were substantially less than the general PECs. Conversely, lead and zinc concentrations in samples collected along the transects located Table 9.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Short Creek flood plain, Cherokee County, Kansas, March and April 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A, 2J, and 2K) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect StC1 (downstream) StC1-1 4,677 3,020 10,400 5,579 2,303 12,800 3,456 3,503 StC1-2 4,897 3,284 10,700 5,436 1,759 8,077 1,332 8,671 3,516 StC1-3 3,711 2,586 12,700 8,212 4,986 12,700 Transect StC2 (upstream) StC2-1 5,341 4,028 4,935 StC2-2 5,697 4,597

26    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas within or downstream from the historically mined areas (that is, transects TrC1, TrC2, WC1, and WC2; fig. 2A) typically exceeded the general PECs (tables 11 and 13). Contamination was most pronounced (of all the sites sampled for this study) for the two downstream transects on the Tar Creek flood plain, with lead and zinc concentrations that frequently far exceeded the TSMD-specific PECs (table 11). A similar longitudinal pattern in streambed-sediment contamination (less than 63-µm fraction) for these two streams was reported by Pope (2005). Downstream Effects Once introduced into the fluvial system, miningcontaminated sediment is affected by several processes including temporary deposition, long-term storage, remobilization, transport, hydraulic sorting, dilution by mixing with relatively uncontaminated sediment, chemical sorption and desorption, and biological uptake (Lewin and Macklin, 1987; Macklin, 1996; Miller, 1997; Luoma and Rainbow, 2008). Because mining-related trace elements are mostly (often more than 90 percent) transported in the particulate phase, fluvial geomorphic processes are important, if not dominant, in the redistribution of mining-contaminated sediment in the environment (Horowitz, 1991; Miller, 1997). With distance downstream from the source area, sediment concentrations of mining-related trace elements typically will decrease unless additional downstream sources contribute contaminated sediment (Axtmann and Luoma, 1991; Macklin, 1996; Luoma and Rainbow, 2008). Within the Cherokee County superfund site, the Spring River receives inflows from several tributaries that drain mining-affected areas (fig. 1). Along its 22-mi length within the superfund site, Pope (2005) determined that lead and zinc concentrations in the bed sediment of the Spring River increased about 7 and 17 times, respectively. Surficial-soil concentrations of lead and zinc in the Spring River flood plain Table 10.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Spring Branch flood plain, Cherokee County, Kansas, March 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A and 2L–2N) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect SB1 (downstream) SB1-1 5,702 3,205 5,708 SB1-2 5,285 4,615 Transect SB2 SB2-1 3,515 2,546 2,699 2,293 SB2-2 3,149 2,940 SB2-3 Transect SB3 (upstream) SB3-1 2,303 4,068 SB3-2 4,361 1,165

Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors    27 Table 11.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Tar Creek flood plain, Cherokee County, Kansas, March and April 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A and 2O–2Q) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect TrC1 (downstream) TrC1-1 3,076 2,238 18,800 20,300 4,774 35,300 5,450 24,100 TrC1-2 5,363 4,050 25,500 23,100 4,708 20,000 5,737 24,000 TrC1-3 4,278 2,016 15,300 6,896 3,773 14,900 4,515 19,000 TrC1-4 5,069 7,837 14,700 22,000 5,344 14,900 2,324 4,937 Transect TrC2 TrC2-1 3,594 2,720 3,173 4,071 TrC2-2 4,331 2,869 3,522 2,939 TrC2-3 4,069 3,086 3,738 3,544 51,300 TrC2-4 4,895 3,737 3,768 2,494 94,200 Transect TrC3 (upstream) TrC3-1

28    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 11.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Tar Creek flood plain, Cherokee County, Kansas, March and April 2011.—Continued [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil Lead concentration, Zinc concentration, Percentage of silt Sample sampling and coring mg/kg mg/kg and clay in bulk depth, site identifier sample inches Bulk sample <63-µm fraction Bulk sample <63-µm fraction (figs. 2A and 2O–2Q) Transect TrC3 (upstream)—Continued TrC3-2 TrC3-3 TrC3-4 Table 12.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Turkey Creek flood plain, Cherokee County, Kansas, March 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A and 2R) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect TkC1 TkC1-1 5,110 4,899 6,722 1,610 10,100 TkC1-2 5,458 4,165 4,289 1,216 8,826 TkC1-3 2,839 2,130

Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors    29 Table 13.  Percentage of silt and clay and concentrations of lead and zinc determined by x-ray fluorescence for surficial-soil and core samples collected from the Willow Creek flood plain, Cherokee County, Kansas, April 2011. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; less than; µm, micrometer; --, not available] Surficial-soil sampling and coring site identifier (figs. 2A, and 2S–2U) Percentage of silt and clay in bulk sample Sample depth, inches Lead concentration, mg/kg Zinc concentration, mg/kg Bulk sample <63-µm fraction Bulk sample <63-µm fraction Transect WC1 (downstream) WC1-1 1,053 1,010 WC1-2 1,128 1,064 WC1-3 Transect WC2 WC2-1 1,511 1,290 1,783 1,565 WC2-2 1,078 1,117 WC2-3 1,112 1,736 WC2-4 1,235 1,592 2,607 2,560 1,858 Transect WC3 (upstream) WC3-1 WC3-2

30    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas were variable and did not indicate a pronounced upstream-todownstream trend (figs. 3 and 4, table 4). The variability was caused, in part, by the complexity of factors that determine the distribution of mining-contaminated sediment on the flood plain. A comparison of lead and zinc concentrations in the bottom sediment of two reservoirs located on the Spring River indicated less contamination with distance downstream from the mining-affected areas. Median lead and zinc concentrations in the bottom sediment of Empire Lake, Kansas (located within the superfund site and immediately downstream from several mining-affected areas within the TSMD) (fig. 1), were about 5 and 6 times larger than median concentrations in the bottom sediment of Grand Lake O’ the Cherokees, Oklahoma (located at least 13 miles downstream from the last Spring River tributary that drains a substantial mining-affected area) (Juracek, 2006; Juracek and Becker, 2009). The Neosho River (fig. 1), with its larger flows and less-contaminated sediment, likely dilutes the load of contaminated sediment delivered to Grand Lake O’ the Cherokees by the Spring River (Juracek and Becker, 2009). A pronounced downstream decrease in flood-plain and bed-sediment lead and zinc concentrations typically was not indicated for the sections of the mining-affected tributaries located within the Cherokee County superfund site (tables 8–13; Pope, 2005). The explanation largely was related to the distribution of historically mined areas within each basin (fig. 1). Distance-from-Channel Effects The distribution of miningcontaminated sediment on flood plains is complex because it is determined by the interaction of several factors including the size and density of the contaminated particles, floodplain width and topography, flood characteristics (frequency, magnitude, duration), and fluvial geomorphic processes (Lewin and others, 1977; Brewer and Taylor, 1997; Lecce and Pavlowsky, 1997). The complexity is evidenced by previous studies in which mining-related flood-plain contamination with increasing distance from the channel increased, decreased, or indicated no trend (Bradley and Cox, 1990; Macklin and others, 1994; Brewer and Taylor, 1997; Walling and others, 2003). Mining-related contamination in surficial soils (bulk sample results) was variable in the Spring River flood plain and tributary flood plains with respect to increasing distance from the channel. For the Spring River flood plain, distance-from-channel effects were assessed using the cores (generally, the top 1–2 in.) collected along six transects (fig. 2A). Four to six cores were used for each transect. No consistent trend in lead and zinc concentrations with distance from the channel was evident for transect T1. For transect T2, lead and zinc concentrations initially decreased with distance from the channel then stabilized. For transect T3, lead concentrations were relatively stable with distance whereas zinc concentrations initially were variable then decreased. Lead and zinc concentrations along transect T4 increased then decreased. For transect T5, lead and zinc concentrations were variable with an overall decrease with distance. Along transect T6, lead concentrations decreased with distance whereas zinc concentrations decreased then increased. Overall, a tendency for the largest lead and zinc concentrations to be located near the channel was indicated (table 14, fig. 5). Variability in lead and zinc concentrations with distance from the channel was indicated for the tributary flood plains. Only transects with at least two surficial-soil sampling sites located on the same side of the channel were used to assess changes in contamination with increasing distance from the channel. The availability of only two sampling sites on the 1,000 2,000 3,000 4,000 5,000 6,000 Zinc concentration, in milligrams per kilogram Distance from Spring River, dimensionless T1 T2 T3 Transect site EXPLANATION T4 T5 T6 Figure 5.  Variability of flood-plain zinc concentrations (surficial-soil bulk samples) with distance from the Spring River along transects T1 through T6. Location of transects shown in figure 2A.

Variability of Lead and Zinc Concentrations in Relation to Mining Activity and Other Factors    31 Table 14. Lead and zinc concentrations (surficial-soil bulk samples) with distance from the Spring River for flood-plain coring sites located along transects T1 through T6. Location of transects shown in figure 2A. [Shading indicates concentration greater than the general probable-effect concentration listed in table 3. mg/kg, milligrams per kilogram; N, nearest to channel; less than; F, farthest from channel] Transect (fig. 2A) Coring site Lead concentration (mg/kg) Zinc concentration (mg/kg) Depth interval analyzed (inches) T1 T1-1 (N) 0–2 T1-2 4,850 0–2 T1-3 0–1 T1-4 <27 0–2 T1-5 (F) 0–2 T2 T2-1 (N) 4,656 0–2 T2-2 0–2 T2-3 <20 0–2 T2-4 0–1 T2-5 0–1 T2-6 (F) 0–2 T3 T3-1 (N) <51 0–2 T3-2 0–2 T3-6 0–2 T3-3 0–2 T3-4 0–2 T3-5 (F) 0–2 T4 T4-2 (N) 0–1 T4-3 1,092 0–1 T4-4 0–1 T4-5 (F) <57 0–1 T5 T5-2 (N) 0–1 T5-3 0–1 T5-4 0–1 T5-5 0–1 T5-6 0–1 T5-7 (F) 0–1 T6 T6-1 (N) 1,435 0–1 T6-2 0–2 T6-3 0–1 T6-4 0–1.5 T6-5 (F) <20 0–3

32    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas same side of the channel for multiple transects constrained the ability to determine if trends in lead and zinc concentrations with distance from the channel were present. Nevertheless, the available data demonstrated the spatial complexity of lead and zinc contamination on the tributary flood plains. For Brush Creek, transects BC1 (both sides of channel, two sampling sites on each side) and BC2 (one side of channel, two sampling sites) were evaluated (figs. 2A–2C). In all three cases, lead and zinc concentrations were larger for the sampling site located farthest from the channel (table 5). Transect CC1 (one side of channel, two sampling sites) was evaluated for Cow Creek. Lead and zinc concentrations were slightly smaller for the sampling site located farthest from the channel (figs. 2A and 2D, table 6). For Shawnee Creek, transect SnC1 (one side of channel, two sampling sites) was evaluated. With distance from the channel, the lead concentration essentially was unchanged whereas the zinc concentration substantially decreased (figs. 2A and 2F, table 7). Two transects were evaluated for Shoal Creek (fig. 2A). Along transect ShC1 (one side of channel, three sampling sites), lead and zinc concentrations with distance from the channel decreased then increased. However, along transect ShC2 (one side of channel, four sampling sites), lead and zinc concentrations decreased with distance from the channel (figs. 2A, 2H, and 2I, table 8). For Short Creek, transects StC1 (one side of channel, three sampling sites) and StC2 (one side of channel, two sampling sites) were evaluated (figs. 2A, 2J, and 2K). With distance from the channel along transect StC1, lead concentration increased then decreased and zinc concentration decreased. Lead and zinc concentrations were larger for the sampling site located farthest from the channel for transect StC2 (table 9). The transects evaluated for Spring Branch were SB1 (one side of channel, two sampling sites) and SB2 (one side of channel, three sampling sites) (figs. 2A, 2L, and 2M). Lead and zinc concentrations were larger for the sampling site located farthest from the channel for transect SB1. Along transect SB2, lead and zinc concentrations decreased with distance from the channel (table 10). For Tar Creek, the transects evaluated were TrC1 (one side of channel, four sampling sites), TrC2 (both sides of channel, two sampling sites on each side), and TrC3 (one side of channel, four sampling sites) (figs. 2A, and 2O–2Q). Along transect TrC1, lead concentration was variable whereas zinc concentration increased then decreased with distance from the channel. For transect TrC2, lead and zinc concentrations for the sampling site located farthest from the channel, compared to the near-channel site, were larger on one side of the channel and smaller on the other side of the channel. For transect TrC3, lead and zinc concentrations increased with distance from the channel (table 11). For Turkey Creek, transect TkC1 (one side of channel, two sampling sites) was evaluated (figs. 2A and 2R). Whereas the lead concentration was virtually the same for both sampling sites, the zinc concentration was smaller for the site located farthest from the channel (table 12). The transects evaluated for Willow Creek were WC1 (one side of channel, three sampling sites) and WC2 (both sides of channel, two sampling sites on each side) (figs. 2A, 2S, and 2T). With distance from the channel, lead and zinc concentrations increased then decreased for transect WC1. On both sides of the channel along transect WC2, the zinc concentration was larger for the sampling site located farthest from the channel. However, the lead concentration for the site located farthest from the channel was larger on one side and smaller on the other side (table 13). Particle-Size Effects In general, there is an inverse relation between particle size and trace element concentrations in sediment. That is, as particle size decreases, trace element concentrations increase, in part, because of the greater surface area available for elements to accumulate (Horowitz, 1991; Luoma and Rainbow, 2008). However, for mining-contaminated sediment, this general relation may not hold because coarse sediment (that is, particles larger than 63 mm) can have large concentrations of mining-related elements (Bradley, 1989; Moore and others, 1989). For all surficial-soil sampling sites in the Spring River flood plain and tributary flood plains, XRF analyses were performed on the bulk sample and the less than 63-µm fraction to assess compositional differences related to particle size. Typically, substantial differences in lead and zinc concentration were measured for the bulk and less than 63-µm samples. For lead and zinc, concentrations in the less than 63-µm fraction were within ±20 percent of the concentrations in the bulk sample for only 17 and 32 percent of the cases, respectively. Lead and zinc concentrations in the less than 63-µm fraction were smaller than the concentrations in the bulk sample for 89 and 80 percent of the cases, respectively (tables 4–13). One possible explanation to account, in part, for the divergent concentrations is analytical variability. A second possible explanation is differences in the chemical composition of the coarse particles (that is, larger than 63 mm) in comparison to the fine particles (that is, less than 63 mm). Specifically, for the surficial-soil samples analyzed by XRF in this study, the coarse particles possibly contained larger concentrations of lead and zinc compared to the fine particles. Summary and Conclusions A 4-year study by the U.S. Geological Survey, which was requested and funded by the U.S. Environmental Protection Agency, was begun in 2009 to investigate the occurrence and variability of mining-related lead and zinc in the Spring River flood plain and tributary flood plains in the Cherokee County, Kansas, superfund site. The study used a combination of

References Cited    33 surficial-soil sampling and coring completed in 2009 through 2011. The results of this study are summarized below: With few exceptions, surficial soils in the Spring River flood plain had lead and zinc concentrations that were less than the general probable-effect con­ centrations (PECs), which represent the concentra­ tions above which adverse aquatic biological effects are likely to occur. Lead and zinc concentrations larger than the general or TSMD-specific PECs, or both, were infrequent at depth in the Spring River flood plain. When present, such contamination typically was confined to the upper 2 feet of the core and frequently was confined to the upper 6 inches. Tributaries with few or no lead- and zinc-mined areas in the basin—Brush Creek, Cow Creek, and Shawnee Creek—generally had flood-plain lead and zinc concentrations (surficial soil, 6- and 12-inch depth) that were substantially less than the general PECs. Tributaries with extensive lead- and zinc-mined areas in the basin—Shoal Creek, Short Creek, Spring Branch, Tar Creek, Turkey Creek, and Willow Creek—had flood-plain lead concentrations (sur­ ficial soil, 6- and 12-inch depth) that frequently or typically exceeded the general and TSMD-specific PECs. Tributaries with extensive lead- and zinc-mined areas in the basin—Shoal Creek, Short Creek, Spring Branch, Tar Creek, Turkey Creek, and Wil­ low Creek—had flood-plain zinc concentrations (surficial soil, 6- and 12-inch depth) that frequently or typically exceeded the general PEC. With the exception of Shoal and Willow Creeks, zinc con­ centrations typically exceeded the TSMD-specific PEC. The largest flood-plain lead and zinc concentrations (surficial soil, 6- and 12-inch depth) were measured for Short and Tar Creeks. Lead and zinc concentrations in the surficial-soil samples from the Spring River flood plain were variable with distance downstream and with distance from the channel. Overall, a tendency for the largest lead and zinc concentrations to be located near the channel was indicated. Lead and zinc concentrations in the surficial-soil samples from the tributary flood plains varied longi­ tudinally in relation to sources of mining-contami­ nated sediment in the basins. The concentrations also varied with distance from the channel; however, no consistent spatial trend was evident. For the surficial-soil samples collected from the Spring River flood plain and tributary flood plains, both the coarse (larger than 63 micrometers) and fine particles (less than 63 micrometers) contained substantial lead and zinc concentrations. References Cited Adriano, D.C., 2001, Trace elements in terrestrial environments—Biogeochemistry, bioavailability, and risks of metals (2d ed.): New York, Springer-Verlag, 866 p. Allgood, F.P., and Persinger, I.D., 1979, Missouri general soil map and soil association descrip­tions: U.S. Department of Agriculture, Soil Conservation Service, 74 p. Angelo, R.T., Cringan, M.S., Chamberlain, D.L., Stahl, A.J., Haslouer, S.G., and Goodrich, C.A., 2007, Residual effects of lead and zinc mining on freshwater mussels in the Spring River Basin (Kansas, Missouri, and Oklahoma, USA): Science of the Total Environment, v. 384, p. 467–496. Arbogast, B.F., 1996, Analytical methods manual for the Mineral Resource Surveys Program: U.S. Geological Survey Open-File Report 96–525, 248 p. American Society for Testing and Materials International, 2007, D422-63, Standard test method for particlesize analysis of soils, in American Society for Testing and Materials International Book of Standards: West Conshohocken, Pennsylvania, American Society for Testing and Materials International, v. 4.08, p. 10–17. Axtmann, E.V., and Luoma, S.N., 1991, Large-scale distribution of metal contamination in the fine-grained sediments of the Clark Fork River, Montana, U.S.A.: Applied Geochemistry, v. 6, p. 75–88. Barks, J.H., 1977, Effects of abandoned lead and zinc mines and tailings piles on water quality in the Joplin area, Missouri: U.S. Geological Survey Water-Resources Investigations 77–75, 49 p. Baudo, Renato, Giesy, J.P., and Muntau, Herbert, eds., 1990, Sediments—Chemistry and toxicity of in-place pollutants: Ann Arbor, Michigan, Lewis Publishers, 405 p. Beyer, W.N., Dalgarn, J., Dudding, S., French, J.B., Mateo, R., Miesner, J., Sileo, L., Spann, J., 2004, Zinc and lead poisoning in wild birds in the Tri-State Mining District (Oklahoma, Kansas, and Missouri): Archives of Environmental Contamination and Toxicology, v. 48, p. 108–117. Bradley, S.B., 1989, Incorporation of metalliferous sediments from historic mining into river floodplains: GeoJournal, v. 19.1, p. 5–14.

34    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Bradley, S.B., and Cox, J.J., 1990, The significance of the floodplain to the cycling of metals in the River Derwent catchment, U.K.: The Science of the Total Environment, v. 97/98, p. 441–454. Brewer, P.A., and Taylor, M.P., 1997, The spatial distribution of heavy metal contaminated sediment across terraced floodplains: Catena, v. 30, p. 229–249. Brichta, L.C., 1960, Catalog of recorded exploration drilling and mine workings, Tri-State Zinc-Lead District—Missouri, Kansas, and Oklahoma: U.S. Bureau of Mines Information Circular 7993, 13 p. Briggs, P.H., and Meier, A.L., 1999, The determination of forty two elements in geological mate­rials by inductively coupled plasma-mass spectrometry: U.S. Geological Survey Open-File Report 99–166, 15 p. Brosius, Liz, and Sawin, R.S., 2001, Lead and zinc mining in Kansas: Kansas Geological Survey Public Information Circular 17, 6 p. Davies, B.E., 1983, Heavy metal contamination from base metal mining and smelting—Implications for man and his environment, chap. 14 of Thornton, Iain, ed., Applied environmental geochemistry: New York, Academic Press, p. 425–462. Davis, J.V., and Schumacher, J.G., 1992, Water-quality characterization of the Spring River Basin, southwestern Missouri and southeastern Kansas: U.S. Geological Survey Water-Resources Investigations Report 90–4176, 112 p. Federal Emergency Management Agency, 2008, Digital flood insurance rate map database, Cherokee County, Kansas (and incorporated areas): Federal Emergency Management Agency, November 19, 2008. Fenneman, N.M., 1938, Physiography of eastern United States: New York, McGraw-Hill, 714 p. Fenneman, N.M., 1946, Physical divisions of the United States: U.S. Geological Survey special map, scale 1:7,000,000, 1 sheet. Ferrington, L.C., Galle, O.K., Blackwood, M.A., Wright, C.A., Schmidt, F.J., and Jobe, J.M., 1989, Occurrence and biological effects of cadmium, lead, manganese, and zinc in the Short Creek/Empire Lake aquatic system in Cherokee County, Kansas: Kansas Water Resources Research Institute, contribution no. 277, 126 p. Fishman, M.J., and Friedman, L.C., eds., 1989, Methods for determination of inorganic sub­stances in water and fluvial sediments: U.S. Geological Survey Techniques of Water- Resources Investigations, book 5, chap. A1, 545 p. Forstner, Ulrich, and Wittmann, G.T.W., 1981, Metal pollution in the aquatic environment: New York, Springer-Verlag, 486 p. High Plains Regional Climate Center, 2012, Historical data summaries: accessed March 1, 2012, at ://www..unl.edu/. Horowitz, A.J., 1991, A primer on sediment-trace element chemistry (2d ed.): Chelsea, Michigan, Lewis Publishers, 136 p. Horowitz, A.J., Elrick, K.A., Demas, C.R., and Demcheck, D.K., 1991, The use of sediment-trace element geochemical models for the identification of local fluvial baseline concentrations, in Peters, N.E., and Walling, D.E., eds., Sediment and stream water quality in a changing environment—Trends and explanation, Proceedings of Symposia of the 20th General Assembly of the International Union of Geodesy and Geophysics, Vienna, Austria, August 11–24, 1991: Oxfordshire, United Kingdom, IAHS publication no. 23, p. 339–348. Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2001, Estimating suspended sediment and trace ele­ment fluxes in large river basins—Methodological considerations as applied to the NASQAN program: Hydrological Processes, v. 15, p. 1107– Ingersoll, C.G., Ivey, C.D., Brumbaugh, W.G., Besser, J.M., and Kemble, N.E., 2009, Toxicity assessment of sediments from the Grand Lake O’ the Cherokees with the amphipod Hyalella azteca: U.S. Geological Survey Administrative Report CERC-8335-FY09-20-01, 97 p. Accessed December 2009, at ://www.fws.gov/southwest/es/oklahoma/ envqual.htm. Juracek, K.E., 2006, Sedimentation and occurrence and trends of selected chemical constituents in bottom sediment, Empire Lake, Cherokee County, Kansas, 1905–2005: U.S. Geological Survey Scientific Investigations Report 2006–5307, 79 p. Juracek, K.E., and Becker, M.F., 2009, Occurrence and trends of selected chemical constituents in bottom sediment, Grand Lake O’ the Cherokees, northeast Oklahoma, 1940–2008: U.S. Geological Survey Scientific Investigations Report 2009–5258, 28 p. Kansas Department of Health and Environment, 2006, Kansas issues new fish consumption advisories, News release issued January 9, 2006: accessed February 2006, at :// www.kdheks.gov/news/index.. Kansas Department of Health and Environment, 2012, KDHE issues revised fish consumption advisories, News release issued January 5, 2012: accessed April 2012, at ://www. kdheks.gov/news/index..

References Cited    35 Leach, D.L., Taylor, R.D., Fey, D.L., Diehl, S.F., and Saltus, R.W., 2010, A deposit model for Mississippi ValleyType lead-zinc ores, chap. A of Mineral deposit models for resource assessment: U.S. Geological Survey Scientific Investigations Report 2010–5070–A, 52 p. Lecce, S.A., and Pavlowsky, R.T., 1997, Storage of miningrelated zinc in floodplain sediments, Blue River, Wisconsin: Physical Geography, v. 18, p. 424–439. Lewin, J., Davies, B.E., and Wolfenden, P.J., 1977, Interactions between channel change and historic mining sediments, chap. 23 of Gregory, K.J., ed., River channel changes: Chichester, England, John Wiley & Sons, p. 353– Lewin, John, and Macklin, M.G., 1987, Metal mining and floodplain sedimentation in Britain, in Gardiner, V., ed., International geomorphology: New York, John Wiley & Sons, p. 1,009–1,027. Lide, D.R., ed., 1993, CRC handbook of chemistry and physics (74th ed.): Boca Raton, Florida, CRC Press, variously paged. Luoma, S.N., and Rainbow, P.S., 2008, Metal contamination in aquatic environments—Science and lateral management: New York, Cambridge University Press, 573 p. MacDonald, D.D., Ingersoll, C.G., and Berger, T.A., 2000, Development and evaluation of con­sensus-based sediment quality guidelines for freshwater ecosystems: Archives of Environ­mental Contamination and Toxicology, v. 39, p. 20–31. MacDonald, D.D., Ingersoll, C.G., Crawford, Meara, Prencipe, Heather, Besser, J.M., Brumbaugh, W.G., Kemble, Nile, May, T.W., Ivey, C.D., Meneghetti, Melissa, Sinclair, Jesse, and O’Hare, Margaret, 2010, Advanced Screening-Level Ecological Risk Assessment (SLERA) for aquatic habitats within the Tri-State Mining District, Oklahoma, Kansas, and Missouri: Nanaimo, British Columbia, MacDonald Environmental Sciences Ltd., [variously paged]. Macklin, M.G., Ridgway, J., Passmore, D.G., and Rumsby, B.T., 1994, The use of overbank sediment for geochemical mapping and contamination assessment—Results from selected English and Welsh floodplains: Applied Geochemistry, v. 9, p. 689–700. Macklin, M.G., 1996, Fluxes and storage of sedimentassociated heavy metals in floodplain systems—Assessment and river basin management issues at a time of rapid environmental change, chap. 13 of Anderson, M.G., Walling, D.E., and Bates, P.D., eds., Floodplain processes: Chichester, England, John Wiley & Sons, p. 441–460. Malcoe, L.H., Lynch, R.A., Kegler, M.C., and Skaggs, V.J., 2002, Lead sources, behaviors, and socioeconomic factors in relation to blood lead of Native American and white children—A community-based assessment of a former mining area: Environmental Health Perspectives, v. 110, supplement 2, p. 221–231. Marcher, M.V., Kenny, J.F., and others, 1984, Hydrology of area 40, Western Region, Interior Coal Province, Kansas, Oklahoma, and Missouri: U.S. Geological Survey WaterResources Investigations, Open-File Report 83–266, 97 p. Marmiroli, Nelson, and Maestri, Elena, 2008, Health implications of trace elements in the environment and the food chain, chap. 2 of Prasad, M.N.V., ed., Trace elements as contaminants and nutrients—Consequences in ecosystems and human health: Hoboken, New Jersey, John Wiley & Sons, p. 23–53. Miller, J.R., 1997, The role of fluvial geomorphic processes in the dispersal of heavy metals from mine sites: Journal of Geochemical Exploration, v. 58, p. 101–118. Moore, J.N., Brook, E.J., and Johns, Carolyn, 1989, Grain size partitioning of metals in contaminated, coarse-grained river floodplain sediment: Clark Fork River, Montana, U.S.A.: Environmental Geology and Water Science, v. 14, p. 107–115. Neuberger, J.S., Mulhall, Margaret, Pomatto, M.C., Sheverbush, Joan, and Hassanein, R.S., 1990, Health problems in Galena, Kansas—A heavy metal mining superfund site: The Science of the Total Environment, v. 94, p. 261–272. Oklahoma Department of Environmental Quality, 2008, DEQ issues fish consumption advisory for Tar Creek area, News release issued February 27, 2008: accessed April 2012, at ://www.leadagency.org/TarCreekFishAdvisory0208.pdf. Pais, Istvan, and Jones, J.B., Jr., 1997, The handbook of trace elements: Boca Raton, Florida, St. Lucie Press, 223 p. Pope, L.M., 2005, Assessment of contaminated streambed sediment in the Kansas part of the historic Tri-State Lead and Zinc Mining District, Cherokee County, 2004: U.S. Geological Survey Scientific Investigations Report 2005–5251, 61 p. Seaber, P.R., Kapinos, F.P., and Knapp, G.L., 1987, Hydrologic unit maps: U.S. Geological Sur­vey WaterSupply Paper 2294, 63 p. Smol, J.P., 2002, Pollution of lakes and rivers—A paleoenvironmental perspective: New York, Oxford University Press, 280 p.

36    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Spruill, T.B., 1987, Assessment of water resources in leadzinc mined areas in Cherokee County, Kansas, and adjacent areas: U.S. Geological Survey Water-Supply Paper 2268, 68 p. Stringer, E.T., 1972, Foundations of climatology—An introduction to physical, dynamic, synoptic, and geographical climatology: San Francisco, W.H. Freeman and Company, 586 p. U.S. Department of Agriculture, Soil Conservation Service, 1973, Soil survey of Crawford County, Kansas: U.S. Department of Agriculture, Soil Conservation Service, 50 p. U.S. Department of Agriculture, Soil Conservation Service, 1985, Soil survey of Cherokee County, Kansas: U.S. Department of Agriculture, Soil Conservation Service, 105 p. U.S. Environmental Protection Agency, 1997, The incidence and severity of sediment contamina­tion in surface waters of the United States, volume 1—National sediment quality survey: U.S. Environmental Protection Agency Report 823–R–97–006, variously paged. U.S. Environmental Protection Agency, 2004, National priority list sites in the midwest: accessed January 2010, at ://www.epa.gov/region7/cleanup/npl_files/index.htm. U.S. Environmental Protection Agency, 2007, Field portable x-ray fluorescence spectrometry for the determination of elemental concentrations in soil and sediment, method 6200: accessed January 2010, at ://epa.gov/epawaste/ hazard/testmethods/sw846//6200.pdf. U.S. Fish and Wildlife Service, 1992, Trace elements and organic compounds in the Spring River Basin of southeastern Kansas in 1988: U.S. Fish and Wildlife Service, Contaminant report no. R6/505M/91, 60 p. van der Merwe, Deon, Carpenter, J.W., Nietfeld, J.C., and Miesner, J.F., 2011, Adverse health effects in Canada geese (Branta Canadensis) associated with waste from zinc and lead mines in the Tri-State Mining District (Kansas, Oklahoma, and Missouri, USA): Journal of Wildlife Diseases, v. 47, no. 3, p. 650–660. Walling, D.E., Owens, P.N., Carter, J., Leeks, G.J.L., Lewis, S., Meharg, A.A., and Wright, J., 2003, Storage of sedimentassociated nutrients and contaminants in river channel and floodplain systems: Applied Geochemistry, v. 18, p. 195– Wildhaber, M.L., Allert, A.L., Schmitt, C.J., Tabor, V.M., and Mulhern, Daniel, 1998, Both contaminants and habitat limit Neosho madtom (Noturus placidus) numbers in the Spring River, a midwestern warmwater stream effected by runoff from historic zinc and lead mining, in Kennedy, Chris, and MacKinley, Don, eds., Fish response to toxic environments, Proceedings of the International Congress on the Biology of Fish, Towson University, Baltimore, Maryland, July 26–30, 1998: accessed March 2005, at ://www. fishbiologycongress.org. Wildhaber, M.L., Schmitt, C.J., and Allert, A.L., 1999, Factors explaining the distribution and site densities of the Neosho madtom (Noturus placidus) in the Spring River, Missouri: U.S. Geological Survey Toxic Substances Hydrology Program in Proceedings of the Technical Meeting, Charleston, South Carolina, March 8–12, 1999—volume 1 of 3: U.S. Geological Survey Water-Resources Report 99–4018A, accessed April 2005, at ://toxics.usgs.gov/ pubs/wri99-4018/Volume1/sectionD/1502_Wildhaber/. Wildhaber, M.L., Allert, A.L., Schmitt, C.J., Tabor, V.M., Mulhern, Daniel, Powell, K.L., and Sowa, S.P., 2000, Natural and anthropogenic influences on the distribution of the threatened Neosho madtom in a midwestern warmwater stream: Transactions of the American Fisheries Society, v. 129, p. 243–261. Zoumis, Theofanis, Schmidt, Astrid, Grigorova, Lidia, and Calmano, Wolfgang, 2001, Contami­nants in sediments— Remobilisation and demobilisation: The Science of the Total Environ­ment, v. 266, p. 195–202.

Appendixes    37 Appendixes

38    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–1. Latitude and longitude coordinates, and land use, for surficial-soil sampling sites in the Spring River flood plain and tributary flood plains in Cherokee County, Kansas, 2009, 2011. Sampling site identifier (figs. 2A–2U) Date sampled (month/day/year) Latitude (decimal degrees) Longitude (decimal degrees) Land use1 Spring River SRF-1 11/12/09 Cropland. SRF-2 11/12/09 Cropland. SRF-3 11/12/09 Cropland. SRF-4 11/12/09 Cropland. SRF-5 11/12/09 Cropland. SRF-6 11/13/09 Grassland. SRF-7 11/13/09 Grassland. SRF-9 11/13/09 Cropland. SRF-10 11/13/09 Grassland. SRF-11 11/17/09 Cropland. SRF-13 11/17/09 Cropland. SRF-14 11/17/09 Cropland. SRF-15 11/17/09 Grassland. SRF-16 11/17/09 Cropland. SRF-17 11/17/09 Cropland. SRF-18 11/17/09 Cropland. SRF-19 11/17/09 Grassland. SRF-20 11/17/09 Grassland. SRF-21 11/18/09 Grassland. SRF-22 11/18/09 Grassland. SRF-23 11/18/09 Cropland. SRF-24 11/18/09 Grassland. SRF-25 11/23/09 Grassland. SRF-26 11/23/09 Grassland. SRF-27 11/23/09 Grassland. SRF-28 11/23/09 Cropland. SRF-29 11/23/09 Cropland. SRF-31 11/23/09 Grassland. SRF-32 11/24/09 Cropland. SRF-33 11/24/09 Grassland. Brush Creek BC1-1 04/14/11 Woodland. BC1-2 05/04/11 Grassland. BC1-3 05/04/11 Grassland. BC1-4 05/04/11 Woodland. BC2-1 05/04/11 Woodland. BC2-2 05/04/11 Woodland.

Appendixes    39 Table 1–1. Latitude and longitude coordinates, and land use, for surficial-soil sampling sites in the Spring River flood plain and tributary flood plains in Cherokee County, Kansas, 2009, 2011.—Continued Sampling site identifier (figs. 2A–2U) Date sampled (month/day/year) Latitude (decimal degrees) Longitude (decimal degrees) Land use1 Cow Creek 03/16/11 Woodland. 03/16/11 Cropland. 03/16/11 Cropland. 03/16/11 Woodland. 03/16/11 Woodland. Shawnee Creek SnC1-1 03/17/11 Cropland. SnC1-2 03/17/11 Woodland. SnC1-3 03/17/11 Woodland. SnC2-1 03/16/11 Cropland. SnC2-2 03/16/11 Cropland. Shoal Creek ShC1-1 05/05/11 Woodland. ShC1-2 05/05/11 Grassland. ShC1-3 05/05/11 Grassland. ShC2-1 05/05/11 Grassland. ShC2-2 05/05/11 Grassland. ShC2-3 05/05/11 Grassland. ShC2-4 05/05/11 Grassland. Short Creek StC1-1 03/15/11 Grassland. StC1-2 03/15/11 Grassland. StC1-3 03/15/11 Grassland. StC2-1 04/13/11 Grassland. StC2-2 04/13/11 Grassland. Spring Branch SB1-1 03/30/11 Woodland. SB1-2 03/30/11 Woodland. SB2-1 03/30/11 Woodland. SB2-2 03/30/11 Woodland. SB2-3 03/30/11 Woodland. SB3-1 03/31/11 Woodland. SB3-2 03/31/11 Woodland. Tar Creek TrC1-1 03/31/11 Grassland. TrC1-2 03/31/11 Grassland. TrC1-3 03/31/11 Grassland. TrC1-4 03/31/11 Disturbed. TrC2-1 04/01/11 Woodland. TrC2-2 04/01/11 Woodland. TrC2-3 04/01/11 Woodland.

40    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–1. Latitude and longitude coordinates, and land use, for surficial-soil sampling sites in the Spring River flood plain and tributary flood plains in Cherokee County, Kansas, 2009, 2011.—Continued Sampling site identifier (figs. 2A–2U) Date sampled (month/day/year) Latitude (decimal degrees) Longitude (decimal degrees) Land use1 TrC2-4 04/01/11 Woodland. TrC3-1 04/12/11 Grassland. TrC3-2 04/12/11 Grassland. TrC3-3 04/12/11 Grassland. TrC3-4 04/12/11 Grassland. Turkey Creek TkC1-1 03/15/11 Grassland. TkC1-2 03/15/11 Grassland. TkC1-3 03/15/11 Grassland. Willow Creek WC1-1 04/13/11 Woodland. WC1-2 04/13/11 Woodland. WC1-3 04/13/11 Woodland. WC2-1 04/13/11 Grassland. WC2-2 04/13/11 Grassland. WC2-3 04/13/11 Grassland. WC2-4 04/13/11 Grassland. WC3-1 04/14/11 Woodland. WC3-2 04/14/11 Grassland. 1Land use observed on the day the surficial-soil sample was collected.

Appendixes    41 Table 1–2. Latitude and longitude coordinates for coring sites in the Spring River flood plain in Cherokee County, Kansas, November 2009 and March 2010. Coring site identifier (fig. 2A) Date cored (month/day/year) Latitude (decimal degrees) Longitude (decimal degrees) T1-1 11/04/09 T1-2 11/04/09 T1-3 11/03/09 T1-4 11/04/09 T1-5 11/04/09 T2-1 03/15/10 T2-2 03/15/10 T2-3 03/15/10 T2-4 03/15/10 T2-5 03/15/10 T2-6 03/15/10 T3-1 11/05/09 T3-2 11/06/09 T3-3 11/05/09 T3-4 11/05/09 T3-5 11/05/09 T3-6 11/06/09 T4-1 03/16/10 T4-2 03/16/10 T4-3 03/16/10 T4-4 03/16/10 T4-5 03/16/10 T5-1 03/17/10 T5-2 03/17/10 T5-3 03/17/10 T5-4 03/17/10 T5-5 03/17/10 T5-6 03/17/10 T5-7 03/17/10 T6-1 11/03/09 T6-2 11/03/09 T6-3 11/03/09 T6-4 11/02/09 T6-5 11/02/09

42    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–3. Percentage of silt and clay and constituent concentrations determined by combustion and spectroscopic methods for three surficial-soil samples (SRF-2, SRF-5, SRF-10) collected from the Spring River flood plain, Cherokee County, Kansas, November [Location of sampling sites shown in figure 2A. Values in parentheses are concentrations in the less than 63-micrometer fraction. mg/kg, milligrams per kilogram; %, percent dry weight; less than] Constituent and unit of measurement Constituent concentration Sample SRF-2 Sample SRF-5 Sample SRF-10 Percentage of silt and clay in bulk sample Nutrients Total nitrogen, mg/kg 1,500 (1,100) 1,300 (1,000) 1,200 (1,500) Total phosphorus, mg/kg 620 (610) 520 (550) 500 (690) Carbon Carbon (total organic), % 1.5 (1.4) 1.4 (1.2) 1.7 (2.1) Carbon (total), % 1.5 (1.3) 1.4 (1.2) 1.6 (1.8) Trace elements Aluminum, % 4.0 (4.2) 2.7 (3.1) 2.3 (3.9) Antimony, mg/kg 0.6 (0.6) 0.6 (0.6) 0.4 (0.6) Arsenic, mg/kg 5.4 (5.7) 5.0 (4.9) 6.3 (7.4) Barium, mg/kg 490 (520) 380 (420) 270 (450) Beryllium, mg/kg 1.4 (1.4) 0.9 (0.9) 1.0 (1.5) Cadmium, mg/kg 0.8 (0.7) 0.3 (0.4) 5.7 (7.4) Chromium, mg/kg 44 (46) 39 (39) 37 (54) Cobalt, mg/kg 9 (9) 7 (8) 11 (15) Copper, mg/kg 13 (14) 11 (12) 10 (17) Iron, % 1.5 (1.6) 1.2 (1.3) 1.6 (2.1) Lead, mg/kg 28 (25) 30 (26) 91 (140) Lithium, mg/kg 25 (26) 19 (21) 17 (26) Manganese, mg/kg 1,100 (940) 500 (520) 650 (930) Molybdenum, mg/kg Nickel, mg/kg 17 (16) 8 (9) 14 (19) Selenium, mg/kg 0.3 (0.3) 0.4 (0.4) 0.3 (0.5) Silver, mg/kg <0.5 (0.6) Strontium, mg/kg 62 (65) 50 (53) 40 (62) Sulfur, % 0.019 (0.019) 0.019 (0.020) 0.046 (0.058) Thallium, mg/kg Tin, mg/kg 2 (2) 1 (2) Titanium, % 0.47 (0.49) 0.42 (0.40) 0.25 (0.45) Uranium, mg/kg Vanadium, mg/kg 59 (59) 49 (49) 42 (63) Zinc, mg/kg 110 (110) 60 (67) 940 (1,200)

Appendixes    43 Table 1–4. Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values. [Shading indicates values not within ± 10 percent of the most probable value. mg/kg, milligrams per kilogram; MPV, most probable value; --, not determined or not applicable; less than; LOD, limit of detection. Reference samples from Fisher Scientific] Sample code Cadmium Lead Zinc Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV RCRA MPV Results obtained during analyses of Spring River flood-plain samples

44    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–4. Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values.­—Continued [Shading indicates values not within ± 10 percent of the most probable value. mg/kg, milligrams per kilogram; MPV, most probable value; --, not determined or not applicable; less than; LOD, limit of detection. Reference samples from Fisher Scientific] Sample code Cadmium Lead Zinc Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Results obtained during analyses of Spring River flood-plain samples—Continued Results obtained during analyses of tributary flood-plain samples

Appendixes    45 Table 1–4. Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values.­—Continued [Shading indicates values not within ± 10 percent of the most probable value. mg/kg, milligrams per kilogram; MPV, most probable value; --, not determined or not applicable; less than; LOD, limit of detection. Reference samples from Fisher Scientific] Sample code Cadmium Lead Zinc Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Results obtained during analyses of tributary flood-plain samples—Continued GBW MPV 2,700 3,800 Results obtained during analyses of Spring River flood-plain samples 2,641 3,511 2,642 3,706 2,626 3,638 2,462 3,233 2,593 3,687 2,700 3,684 2,641 3,779 2,723 3,911 2,326 3,243 2,697 3,574 2,635 3,672 2,710 3,716 2,735 3,810 2,647 3,755 2,563 3,578 2,769 3,777 2,653 3,843 2,690 3,751 2,671 3,583 2,626 3,638 2,462 3,233 2,693 3,889 2,617 3,683 2,706 3,757

46    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–4. Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values.­—Continued [Shading indicates values not within ± 10 percent of the most probable value. mg/kg, milligrams per kilogram; MPV, most probable value; --, not determined or not applicable; less than; LOD, limit of detection. Reference samples from Fisher Scientific] Sample code Cadmium Lead Zinc Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Results obtained during analyses of Spring River flood-plain samples—Continued 2,682 3,700 2,743 3,923 2,753 3,891 2,261 3,229 2,861 3,853 2,767 3,770 2,759 3,826 2,682 3,676 2,760 3,677 2,660 3,885 2,534 3,670 2,762 3,799 2,647 3,827 2,567 3,765 2,659 3,759 2,610 3,670 2,659 3,641 2,706 3,502 2,672 3,580 Results obtained during analyses of tributary flood-plain samples 2,588 3,358 2,574 3,351 2,602 3,405 2,549 3,379 2,579 3,390 2,574 3,353 2,625 3,409 2,610 3,430 2,593 3,319 2,535 3,437 2,618 3,413 2,664 3,378 2,564 3,392 2,534 3,331 2,484 3,368 2,550 3,446 2,533 3,329

Appendixes    47 Table 1–4. Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values.­—Continued [Shading indicates values not within ± 10 percent of the most probable value. mg/kg, milligrams per kilogram; MPV, most probable value; --, not determined or not applicable; less than; LOD, limit of detection. Reference samples from Fisher Scientific] Sample code Cadmium Lead Zinc Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Results obtained during analyses of tributary flood-plain samples—Continued 2,491 3,395 2,520 3,400 2,571 3,419 2,477 3,319 2,541 3,334 2,532 3,327 2,559 3,426 2,545 3,380 2,490 3,315 2,577 3,388 2,640 3,348 2,556 3,338 2,505 3,387 2,520 3,362 2,556 3,404 2,555 3,374 2,478 3,330 2,587 3,437 2,504 3,322 NCS MPV Results obtained during analyses of Spring River flood-plain samples Results obtained during analyses of tributary flood-plain samples

48    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–4. Results of x-ray fluorescence analysis of standard reference samples and comparison to most probable values.­—Continued [Shading indicates values not within ± 10 percent of the most probable value. mg/kg, milligrams per kilogram; MPV, most probable value; --, not determined or not applicable; less than; LOD, limit of detection. Reference samples from Fisher Scientific] Sample code Cadmium Lead Zinc Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Concentration (mg/kg) Percent difference from MPV Results obtained during analyses of tributary flood-plain samples—Continued

Appendixes    49 Table 1–5. Percentage of silt and clay and constituent concentrations determined by combustion and spectroscopic methods for six surficial-soil samples (BC2-1, SB2-2, SnC2-1, StC1-2, TrC1-3, WC2-1) collected from tributary flood plains, Cherokee County, Kansas, March, April, and May 2011. [Location of sampling sites shown in figure 2A. Values in parentheses are concentrations in the less than 63-micrometer fraction. mg/kg, milligrams per kilogram; %, percent dry weight; less than] Constituent and unit of measurement Constituent concentration Sample BC2-1 Sample SB2-2 Sample SnC2-1 Percentage of silt and clay in bulk sample Nutrients Total nitrogen, mg/kg 1,900 (2,500) 7,500 (6,900) 1,400 (1,100) Total phosphorus, mg/kg 580 (790) 1,100 (1,100) 400 (430) Carbon Carbon (total organic), % 2.3 (2.8) 10 (9) 1.4 (1.1) Carbon (total), % 2.2 (2.6) 9.5 (8.2) 2.4 (1.1) Trace elements Aluminum, % 3.1 (4.8) 2.7 (3.1) 3.8 (4.2) Antimony, mg/kg 0.6 (0.7) 1.5 (1.8) 0.7 (0.7) Arsenic, mg/kg 5.6 (7.6) 12 (13) 6.9 (7.0) Barium, mg/kg 300 (460) 300 (360) 390 (430) Beryllium, mg/kg 1.2 (1.6) 1.2 (1.4) 1.3 (1.4) Cadmium, mg/kg 0.5 (0.9) 24 (22) 0.1 (0.2) Chromium, mg/kg 45 (61) 55 (56) 53 (58) Cobalt, mg/kg 11 (16) 14 (13) 14 (13) Copper, mg/kg 11 (15) 47 (50) 11 (12) Iron, % 1.9 (2.7) 3.1 (3.2) 2.2 (2.3) Lead, mg/kg 24 (36) 670 (740) 28 (35) Lithium, mg/kg 27 (39) 22 (27) 31 (34) Manganese, mg/kg 520 (710) 710 (730) 660 (600) Molybdenum, mg/kg 1 (1) Nickel, mg/kg 18 (23) 29 (29) 17 (18) Selenium, mg/kg 0.4 (0.5) 0.9 (0.9) 0.4 (0.4) Silver, mg/kg <0.5 (0.5) Strontium, mg/kg 64 (86) 57 (64) 64 (70) Sulfur, % 0.03 (0.04) 0.18 (0.17) 0.02 (0.02) Thallium, mg/kg Tin, mg/kg 1 (2) 10 (11) 2 (2) Titanium, % 0.36 (0.50) 0.26 (0.33) 0.47 (0.54) Uranium, mg/kg Vanadium, mg/kg 54 (77) 55 (62) 66 (71) Zinc, mg/kg 170 (250) 3,400 (3,500) 75 (97)

50    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–5. Percentage of silt and clay and constituent concentrations determined by combustion and spectroscopic methods for six surficial-soil samples (BC2-1, SB2-2, SnC2-1, StC1-2, TrC1-3, WC2-1) collected from tributary flood plains, Cherokee County, Kansas, March, April, and May 2011.—Continued [Location of sampling sites shown in figure 2A. Values in parentheses are concentrations in the less than 63-micrometer fraction. mg/kg, milligrams per kilogram; %, percent dry weight; less than] Constituent and unit of measurement Constituent concentration Sample StC1-2 Sample TrC1-3 Sample WC2-1 Percentage of silt and clay in bulk sample Nutrients Total nitrogen, mg/kg 4,000 (3,300) 1,500 (1,900) 2,300 (2,200) Total phosphorus, mg/kg 2,900 (3,200) 960 (800) 670 (770) Carbon Carbon (total organic), % 5.6 (4.0) 2.0 (2.7) 3.0 (2.5) Carbon (total), % 5.3 (3.9) 2.8 (3.3) 3.1 (2.5) Trace elements Aluminum, % 2.9 (3.4) 2.6 (2.5) 4.1 (5.3) Antimony, mg/kg 10 (12) 2.3 (1.8) 0.7 (0.8) Arsenic, mg/kg 17 (19) 18 (13) 7.5 (8.6) Barium, mg/kg 380 (450) 180 (170) 360 (480) Beryllium, mg/kg 2.4 (2.1) 2.0 (1.7) 1.4 (1.8) Cadmium, mg/kg 80 (78) 100 (93) 9.9 (8.9) Chromium, mg/kg 55 (62) 74 (63) 53 (67) Cobalt, mg/kg 23 (21) 18 (14) 14 (16) Copper, mg/kg 330 (320) 300 (250) 23 (26) Iron, % 2.1 (2.2) 2.7 (2.0) 2.4 (2.8) Lead, mg/kg 5,600 (6,100) 8,300 (8,000) 260 (280) Lithium, mg/kg 22 (24) 46 (32) 40 (50) Manganese, mg/kg 1,000 (980) 1,000 (700) 750 (870) Molybdenum, mg/kg 3 (3) 3 (2) 1 (1) Nickel, mg/kg 33 (32) 46 (41) 25 (30) Selenium, mg/kg 2.2 (2.3) 2.9 (2.4) 0.7(0.7) Silver, mg/kg 2.4 (2.4) 0.5 (<0.5) Strontium, mg/kg 59 (67) 49 (38) 110 (110) Sulfur, % 0.21 (0.20) 0.75 (0.53) 0.10 (0.07) Thallium, mg/kg Tin, mg/kg 270 (370) 3 (2) 2 (2) Titanium, % 0.27 (0.36) 0.21 (0.21) 0.38 (0.50) Uranium, mg/kg Vanadium, mg/kg 57 (65) 73 (64) 67 (85) Zinc, mg/kg 11,000 (11,000) 26,000 (26,000) 1,700 (1,600)

Appendixes    51 Table 1–6. Cadmium concentrations determined by x-ray fluorescence for surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011. [mg/kg, milligrams per kilogram; µm, micrometer; less than] Surficial-soil sampling site identifier (figs. 2A–2U) Cadmium concentration, mg/kg Bulk sample <63-µm fraction Spring River SRF-1 SRF-2 SRF-3 SRF-4 SRF-5 SRF-6 SRF-7 SRF-9 SRF-10 SRF-11 SRF-13 SRF-14 SRF-15 SRF-16 SRF-17 SRF-18 SRF-19 SRF-20 SRF-21 SRF-22 SRF-23 SRF-24 SRF-25 SRF-26 SRF-27 SRF-28 SRF-29 SRF-31 SRF-32 SRF-33 Surficial-soil sampling site identifier (figs. 2A–2U) Cadmium concentration, mg/kg Bulk sample <63-µm fraction Brush Creek BC1-1 BC1-2 BC1-3 BC1-4 BC2-1 BC2-2 Cow Creek Shawnee Creek SnC1-1 SnC1-2 SnC1-3 SnC2-1 SnC2-2 Shoal Creek ShC1-1 ShC1-2 ShC1-3 ShC2-1 ShC2-2 ShC2-3 ShC2-4 Short Creek StC1-1 StC1-2 StC1-3 StC2-1 StC2-2

52    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–6. Cadmium concentrations determined by x-ray fluorescence for surficial-soil samples collected from the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009, 2011.—Continued [mg/kg, milligrams per kilogram; µm, micrometer; less than] Surficial-soil sampling site identifier (figs. 2A–2U) Cadmium concentration, mg/kg Bulk sample <63-µm fraction Spring Branch SB1-1 SB1-2 SB2-1 SB2-2 SB2-3 SB3-1 SB3-2 Tar Creek TrC1-1 TrC1-2 TrC1-3 TrC1-4 TrC2-1 TrC2-2 TrC2-3 TrC2-4 TrC3-1 TrC3-2 Surficial-soil sampling site identifier (figs. 2A–2U) Cadmium concentration, mg/kg Bulk sample <63-µm fraction Tar Creek—Continued TrC3-3 TrC3-4 Turkey Creek TkC1-1 TkC1-2 TkC1-3 Willow Creek WC1-1 WC1-2 WC1-3 WC2-1 WC2-2 WC2-3 WC2-4 WC3-1 WC3-2

Appendixes    53 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010. [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T1-1 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 6” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 2” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 10’ 6” 11’ 2” 11’ 6” Core depth interval (in feet and inches) 11’ 10” Cadmium Lead concentration concentration (mg/kg) (mg/kg) Zinc concentration (mg/kg) Coring site T1-1—Continued 12’ 2” 12’ 6” 12’ 10” 13’ 2” 13’ 2” 13’ 2” 13’ 6” 13’ 10 14’ 2” 14’ 6” 14’ 10” 15’ 2” 15’ 6” 15’ 10” 0’ 2” Coring site T1-2 4,158 0’ 2” 4,692 0’ 2” 5,701 0’ 6” 1,871 0’ 10” 2,793 1’ 2” 2,148 1’ 6” 1,226 1,302 1’ 10” 4,984 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 2” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 6”

54    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain,

Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T1-2—Continued 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 10’ 6” 10’ 10” 11’ 2” 11’ 6” 11’ 10” 12’ 2” 12’ 6” 12’ 10” 13’ 2” 13’ 6” 13’ 6” 13’ 6” 13’ 10” 14’ 2” 14’ 6” 14’ 10” 15’ 2” 15’ 6” 15’ 10” Coring site T1-3 0’ 1” 0’ 1” 0’ 1” 0’ 6” 0’ 11” 1’ 3” 1’ 6” 1’ 9” 2’ 3” 2’ 6” 2’ 9” 3’ 3” 3’ 6” 3’ 9” 4’ 2” 4’ 6” 4’ 10” 5’ 3” 5’ 6” 5’ 9” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 3” 10’ 3” 10’ 3” 10’ 6” 10’ 9” 11’ 2” 11’ 6” 11’ 10 12’ 2” 12’ 6” 12’ 6” 12’ 6” 12’ 10” 13’ 2” 13’ 6” 13’ 10” 14’ 2” Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T1-3—Continued

Appendixes    55 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T1-3—Continued Coring site T1-4—Continued 14’ 6” 14’ 10” 15’ 2” 15’ 6” 15’ 10” 10’ 1” 10’ 6” 10’ 10” 11’ 2” 11’ 6” Coring site T1-4 11’ 10” 0’ 2” 0’ 2” 0’ 2” 0’ 5” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 12’ 2” 12’ 6” 12’ 10” 13’ 2” 13’ 6” 13’ 6” 13’ 6” 13’ 10” 14’ 2” 14’ 4” 14’ 7” 3’ 2” Coring site T1-5 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 6” 6’ 6” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 2” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 6” 5’ 10”

56    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain,

Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T1-5—Continued Coring site T2-1—Continued 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 10’ 6” 10’ 10” 11’ 2” 11’ 6” 11’ 10” <18 2’ 1” 2’ 5” 2’ 9” 3’ 1” 3’ 5” 3’ 9” 4’ 1” 4’ 5” 4’ 9” 5’ 1” 5’ 5” 5’ 9” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 6” 7’ 10” 12’ 2” Coring site T2-2 12’ 6” 12’ 10” 12’ 10” 12’ 10” 13’ 2” 13’ 6” 13’ 10” 14’ 2” 14’ 6” 14’ 10” 15’ 2” 15’ 6” 15’ 10” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 1” 1’ 5” 1’ 10” 2’ 1” 2’ 5” 2’ 10” 3’ 1” 3’ 5” 3’ 9” Coring site T2-1 4’ 1” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 5” 1’ 9” 5,201 4,110 5,912 9,728 11,500 1,495 4’ 1” 4’ 5” 4’ 8” 5’ 1” 5’ 5” 5’ 8” 6’ 1”

Appendixes    57 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T2-2—Continued Coring site T2-4—Continued 6’ 5” 6’ 9” 7’ 2” 7’ 5” 7’ 10” 2’ 1” 2’ 5” 2’ 10” 3’ 1” 3’ 5” Coring site T2-3 3’ 11” 0’ 2” 0’ 2” 0’ 5” 0’ 10” 1’ 1” 1’ 5” 1’ 10” 2’ 1” 2’ 5” 2’ 10” 3’ 1” 3’ 5” 3’ 9” 4’ 1” 4’ 5” 4’ 10” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 5” 7’ 5” 7’ 10” 4’ 1” Coring site T2-5 4’ 5” 4’ 9” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 1” 7’ 5” 7’ 10” 0’ 1” 0’ 1” 0’ 5” 0’ 11” 1’ 1” 1’ 5” 1’ 9” 2’ 1” 2’ 5” 2’ 10” 3’ 1” 3’ 5” Coring site T2-4 3’ 10” 0’ 1” 0’ 1” 0’ 5” 0’ 10” 1’ 1” 1’ 5” 1’ 10” 4’ 1” 4’ 5” 4’ 10” 5’ 1” 5’ 5” 5’ 10” 6’ 1”

58    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T2-5—Continued Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T3-1—Continued 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 2” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 10’ 6” 10’ 10” 11’ 2” 11’ 6” 11’ 10” 12’ 2” 12’ 6” 12’ 10” 13’ 2” 13’ 2” 13’ 2” 6’ 5” 6’ 5” 6’ 10” 7’ 1” 7’ 5” 7’ 10” Coring site T2-6 0’ 2” 0’ 2” 0’ 6” 0’ 11” 1’ 1” 1’ 6” 1’ 9” 2’ 1” 2’ 5” 2’ 9” 3’ 1” 3’ 5” 3’ 9” 4’ 1” 4’ 5” 4’ 9” 5’ 1” 5’ 5” 5’ 9” 5’ 9” 6’ 1” 6’ 5” 6’ 9” 7’ 1” 7’ 5” 7’ 9” Coring site T3-1 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2”

Appendixes    59 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T3-1—Continued Coring site T3-2—Continued 13’ 6” 13’ 10” 14’ 2” 14’ 6” 14’ 10” 15’ 2” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 10’ 6” 10’ 10” 15’ 6” Coring site T3-3 15’ 10” 0’ 2” Coring site T3-2 0’ 2” 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 2” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 6” 6’ 6” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6”

60    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T3-3—Continued Coring site T3-4—Continued 9’ 10” 10’ 2” 10’ 6” 10’ 10” 10’ 6” 10’ 10” 11’ 2” 11’ 6” Coring site T3-4 11’ 10” 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 12’ 2” 12’ 6” 12’ 10” 13’ 2” 13’ 6” 13’ 10” 14’ 2” 14’ 2” 14’ 2” 14’ 6” 14’ 10” 15’ 2” 15’ 6” 15’ 10” 4’ 2” Coring site T3-5 4’ 6” 4’ 10” 5’ 2” 5’ 2” 5’ 2” 5’ 6” 5’ 10” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 8’ 2” 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 2” 4’ 6” 4’ 10” 5’ 2” 5’ 2” 5’ 2”

Appendixes    61 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T3-5—Continued Coring site T3-6—Continued 5’ 2” 5’ 6” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10” 6’ 2” 6’ 6” 6’ 10” 7’ 4” 7’ 8” 8’ 2” 8’ 6” 8’ 10” 8’ 2” Coring site T4-1 8’ 6” 8’ 10” 9’ 2” 9’ 6” 9’ 10” 10’ 2” 10’ 6” 10’ 10” 11’ 2” 11’ 6” 11’ 10” 0’ 1” 0’ 1” 0’ 4” 0’ 8” 1’ 1” 1’ 4” 1’ 7” 2’ 1” 2’ 4” 2’ 7” 3’ 1” Coring site T3-6 3’ 4” 0’ 2” 0’ 2” 0’ 2” 0’ 6” 0’ 10” 1’ 2” 1’ 6” 1’ 10” 2’ 2” 2’ 6” 2’ 10” 3’ 6” 4’ 4” 4’ 8” 3’ 7” 4’ 1” 4’ 5” 4’ 5” 4’ 9” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 6” 6’ 10” 7’ 1” 7’ 5” 7’ 10” 5’ 2” Coring site T4-2 5’ 6” 5’ 10” 6’ 2” 6’ 2” 0’ 1” 0’ 1” 0’ 5” 0’ 11”

62    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T4-2—Continued Coring site T4-3—Continued 1’ 1” 1’ 5” 1’ 10” 2’ 1” 2’ 5” 2’ 10” 3’ 1” 3’ 5” 3’ 10” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 5” 7’ 10” 4’ 1” Coring site T4-4 4’ 5” 4’ 5” 4’ 9” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 5” 7’ 10” 0’ 1” 0’ 1” 0’ 4” 0’ 8” 1’ 1” 1’ 5” 1’ 9” 2’ 1” 2’ 4” 2’ 8” 3’ 1” 3’ 5” Coring site T4-3 3’ 8” 0’ 1” 0’ 1” 0’ 4” 0’ 9” 1’ 1” 1’ 4” 1’ 8” 2’ 1” 2’ 4” 2’ 8” 3’ 1” 3’ 4” 1,423 4’ 1” 4’ 5” 4’ 10” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 9” 7’ 1” 7’ 5” 7’ 10” 3’ 8” Coring site T4-5 (rocky and cherty, difficult to analyze) 4’ 1” 4’ 1” 4’ 5” 4’ 10” 0’ 1” 0’ 1” 0’ 5” 0’ 10”

Appendixes    63 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T4-5 (rocky and cherty, difficult to analyze)—Continued Coring site T5-2—Continued 1’ 1” 1’ 7” 3’ 10” 4’ 5” 5’ 4” 7’ 3” 1’ 8” 2’ 1” 2’ 4” 3’ 1” 3’ 4” 3’ 7” Coring site T5-1 4’ 1” 0’ 1” 0’ 1” 0’ 5” 0’ 10” 1’ 1” 1’ 5” 1’ 9” 2’ 1” 2’ 5” 2’ 10” 3’ 1” 3’ 5” 4’ 5” 4’ 9” 5’ 1” 5’ 1” 5’ 5” 5’ 9” 6’ 1” 6’ 5” 6’ 8” 7’ 1” 7’ 5” 7’ 9” 3’ 10” Coring site T5-3 4’ 1” 4’ 5” 4’ 10” 4’ 10” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 5” 7’ 10” 0’ 1” 0’ 1” 0’ 4” 1’ 1” 1’ 4” 2’ 1” 2’ 4” 3’ 1” 3’ 4” 4’ 1” 4’ 6” 4’ 10” 5’ 1” Coring site T5-2 5’ 6” 0’ 1” 0’ 1” 0’ 4” 0’ 7” 1’ 1” 5’ 10” 6’ 1” 6’ 1” 6’ 6” 6’ 11” 1’ 4” 7’ 1”

64    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T5-3—Continued Coring site T5-5—Continued 7’ 6” 7’ 10” 7’ 4” 7’ 8” Coring site T5-4 Coring site T5-6 0’ 1” 0’ 1” 0’ 6” 0’ 10” 1’ 1” 1’ 5” 1’ 9” 2’ 1” 2’ 5” 2’ 9” 3’ 1” 3’ 6” 3’ 6” 4’ 2” 4’ 8” 0’ 1” 0’ 1” 0’ 5” 0’ 8” 1’ 1” 1’ 5” 1’ 9” 2’ 1” 2’ 5” 2’ 8” 3’ 1” 3’ 5” 3’9 “ 4’ 4” 4’ 7” Coring site T5-5 4’ 11” 0’ 1” 0’ 1” 0’ 5” 0’ 9” 1’ 1” 1’ 5” 1’ 9” 2’ 1” 2’ 5” 2’ 9” 5’ 1” 5’ 6” 5’ 11” 6’ 1” 6’ 6” 6’ 11” 7’ 1” 7’ 1” 7’ 5” 7’ 10” 3’ 1” Coring site T5-7 3’ 5” 4’ 2” 4’ 8” 5’ 2” 5’ 5” 5’ 5” 6’ 1” 6’ 4” 6’ 9” 7’ 1” 0’ 1” 0’ 1” 0’ 5” 0’ 10” 1’ 1” 1’ 5” 1’ 11” 2’ 1” 2’ 1” 2’ 5”

Appendixes    65 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T5-7—Continued Coring site T6-1—Continued 2’ 10” 3’ 1” 3’ 5” 3’ 10” 4’ 1” 4’ 5” 4’ 10” 5’ 1” 5’ 5” 5’ 10” 6’ 1” 6’ 5” 6’ 9” 7’ 1” 7’ 5” 7’ 10” 6’ 4” 6’ 8” 7’ 1” 7’ 4” 7’ 8” 8’ 1” 8’ 5” 8’ 9” 9’ 1” 9’ 4” 9’ 7” 10’ 1” 10’ 5” 10’ 9” 11’ 1” 11’ 5” Coring site T6-1 11’ 9” 0’ 1” 0’ 1” 0’ 1” 0’ 4” 0’ 8” 1’ 2” 1’ 5” 1’ 9” 2’ 1” 2’ 1” 2’ 1” 2’ 4” 2’ 8” 3’ 1” 1,411 1,378 1,517 1,654 1,475 1,503 1,868 1,651 3,086 3,033 2,989 1,599 1,478 1,345 12’ 1” 12’ 6” 12’ 10” 13’ 1” 13’ 1” 13’ 1” 13’ 6” 13’ 10” 14’ 1” 14’ 6” 14’ 10” 15’ 1” 15’ 3” 15’ 8” 3’ 5” Coring site T6-2 3’ 8” 4’ 1” 4’ 4” 4’ 8” 5’ 1” 5’ 5” 5’ 9” 6’ 1” 0’ 2” 0’ 2” 0’ 2” 0’ 5” 1’ 1” 1’ 5” 2’ 2” 2’ 5”

66    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T6-2—Continued Coring site T6-3—Continued 3’ 1” 3’ 5” 4’ 1” 4’ 6” 4’ 11” 5’ 1” 5’ 6” 5’ 10” 6’ 1” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 11” 7’ 11” 7’ 11” 8’ 1” 8’ 5” 4’ 10.5” 5’ 1.5” 5’ 6” 5’ 11” 6’ 1” 6’ 1” 6’ 1” 6’ 5” 6’ 10” 7’ 1” 7’ 5.5” 7’ 10” 8’ 2” 8’ 6” 8’ 11” 9’ 2” 9’ 6” 9’ 11” 8’ 8” Coring site T6-3 (duplicate) 9’ 1” 9’ 5” 9’ 8” 10’ 1” 0’ 1” 0’ 1” 0’ 1” 0’ 6” Coring site T6-3 0’ 10.5” 0’ 1” 0’ 1” 0’ 1” 0’ 6” 0’ 10” 1’ 1.5” 1’ 6” 1’ 8.5” 2’ 1.5” 2’ 6” 2’ 10” 3’ 2” 3’ 6” 3’ 10” 4’ 1.5” 4’ 6” 1’ 1.5” 1’ 6” 1’ 9” 2’ 1.5” 2’ 5” 2’ 9” 3’ 1.5” 3’ 5” 3’ 10” 4’ 1.5” 4’ 6” 4’ 11” 5’ 1.5” 5’ 5.5” 5’ 11” 6’ 1.5”

Appendixes    67 Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T6-3 (duplicate)—Continued Coring site T6-4—Continued 6’ 5.5” 6’ 5.5” 6’ 5.5” 6’ 10” 7’ 1.5” 7’ 6” 7’ 10.5” 8’ 1.5” 8’ 6” 8’ 11” 9’ 1.5” 9’ 5.5” 9’ 11” 10’ 1.5” 10’ 5.5” 10’ 11” 11’ 1.5” 11’ 5.5” 11’ 5.5” 11’ 5.5” 11’ 10.5” 12’ 1.5” 12’ 5.5” 12’ 10” 13’ 2” 13’ 6” 13’ 10” 14’ 2” 14’ 6” 14’ 10” 15’ 2” 15’ 7” 15’ 10” 1’ 4.5” 1’ 7.5” 2’ 1” 2’ 4” 2’ 7” 3’ 4” 3’ 8” 4’ 1.5” 4’ 6” 4’ 10.5” 5’ 1” 5’ 4” 5’ 11” 6’ 1” 6’ 5.5” 6’ 10.5” 7’ 1” 7’ 5” 7’ 9” 8’ 2” 8’ 6” 8’ 10” 9’ 1.5” 9’ 7” 9’ 10” 9’ 10.5” 10’ 2.5” 10’ 5.5” 10’ 10” 11’ 1.5” 11’ 5.5” 11’ 10” 12’ 2” <16 <16 Coring site T6-4 12’ 6” 0’ 1.5” 0’ 1.5” 0’ 1.5” 0’ 5” 0’ 8.5” 1’ 2” <15 12’ 11” 13’ 1.5” 13’ 6” 13’ 11” 14’ 1.5” 14’ 1.5” <57

68    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–7. Constituent concentrations determined by x-ray fluorescence for cores collected from the Spring River flood plain, Cherokee County, Kansas, 2009, 2010.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Core depth interval (in feet and inches) Cadmium concentration (mg/kg) Lead concentration (mg/kg) Zinc concentration (mg/kg) Coring site T6-4—Continued Coring site T6-5—Continued 14’ 1.5” 14’ 7” 14’ 11” 15’ 2” 15’ 6” 15’ 11” 3’ 4” 3’ 4” 3’ 8” 4’ 2” 4’ 7” 4’ 10” <16 Coring site T6-5 5’ 2” 0’ 3” 0’ 3” 0’ 3” 1’ 1–1.4” 1’ 1.4–1.8” 1’ 3-7” 2’ 4” 2’ 8” <13 5’ 6” 5’ 11” 6’ 2” 6’ 6” 6’ 10” 7’ 2” 7’ 6” 7’ 10”

Appendixes    69 Table 1–8. Cadmium concentrations determined by x-ray fluorescence for cores collected from tributary flood plains, Cherokee County, Kansas, 2011. [mg/kg, milligrams per kilogram; less than; --, not available] Coring site identifier (figs. 2A–2U) Sample depth, inches Cadmium concentration, mg/kg Brush Creek BC1-1 BC1-2 BC1-3 BC1-4 BC2-1 BC2-2 Cow Creek Shawnee Creek SnC1-1 SnC1-2 SnC1-3 SnC2-1 SnC2-2 Coring site identifier (figs. 2A–2U) Sample depth, inches Cadmium concentration, mg/kg Shoal Creek ShC1-1 ShC1-2 ShC1-3 ShC2-1 ShC2-2 ShC2-3 ShC2-4 Short Creek StC1-1 StC1-2 StC1-3 StC2-1 StC2-2 Spring Branch SB1-1 SB1-2 SB2-1 SB2-2 SB2-3 SB3-1 SB3-2

70    Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas Table 1–8. Cadmium concentrations determined by x-ray fluorescence for cores collected from tributary flood plains, Cherokee County, Kansas, 2011.—Continued [mg/kg, milligrams per kilogram; less than; --, not available] Coring site identifier (figs. 2A–2U) Sample depth, inches Cadmium concentration, mg/kg Tar Creek TrC1-1 TrC1-2 TrC1-3 TrC1-4 TrC2-1 TrC2-2 TrC2-3 TrC2-4 TrC3-1 TrC3-2 TrC3-3 TrC3-4 Coring site identifier (figs. 2A–2U) Sample depth, inches Cadmium concentration, mg/kg Turkey Creek TkC1-1 TkC1-2 TkC1-3 Willow Creek WC1-1 WC1-2 WC1-3 WC2-1 WC2-2 WC2-3 WC2-4 WC3-1 WC3-2 Publishing support provided by: Rolla Publishing Service Center For additional information concerning this publication, contact: Director, USGS Kansas Water Science Center 4821 Quail Crest Place Lawrence, KS 66049 (785) 842–9909 Or visit the Kansas Water Science Center Web Site at: ://ks.water.usgs.gov

Back Cover.  Top—Collection of a soil core near Cow Creek, Cherokee County, Kansas (photograph by Kyle Juracek, U.S. Geological Survey). Bottom—Collection of a surficial-soil sample near Empire Lake, Cherokee County, Kansas (photograph by Kyle Juracek, U.S. Geological Survey).

Juracek— Occurrence and Variability of Mining-Related Lead and Zinc in the Spring River Flood Plain, Cherokee County, Kansas, 2009–11—SIR 2013–5028