Chapter 17 Investigation Worksheet: Who Polluted Surface Water and Groundwater in This Place? To complete this worksheet, see the instructions in the textbook (Chapter 17 Investigation). After completing, you will take a quiz posted on Blackboard with matching, fill-in-the-blank, and multiple-choice questions pertaining to this assignment. The map in Figure 1 has locations of wells (lettered A to P), samples of river water (labeled R1 to R8), and samples of springs (labeled S1 to S4). Various farms, factories, mines, and other facilities are also shown. Only the roads (gray lines) and outlines of the facilities are shown, not the actual buildings and other details. Colors (or shades of gray) on the worksheet represent in a general way the types of rocks and sediment exposed on the surface; check the cross section in the textbook for details. Do the following: (1) draw on this map contours of water-table elevations and draw large arrows showing the direction of groundwater flow; (2) shade in areas of contamination and use the directions of groundwater flow and stream flow to determine which facilities caused the contamination; (3) draw a large X over these facilities; (4) draw circles around two wells that you predict will remain free of contamination; and (5) write the letter W to mark the location of new wells you propose to drill to intercept the contamination. Reference the textbook for additional information. Notes: (1) a recent geologic study has shown that Slidetown and Springtown are NOT sources of contamination, and (2) contamination can follow permeable units through the subsurface but is less likely to travel through less permeable units even though the water table is shown as cutting across the units (which it does). Table 1: Location Map Table 2. Elevations of the Water Table and Concentrations of Contamination This table shows water-table elevations in meters and concentrations of contamination in milligrams per liter (mg/L) for each of the lettered wells, and the concentration of contamination in samples from four springs and eight river segments. The location of each sample site is marked on the figure. Table 3. Stratigraphic Section This stratigraphic section represents the sequence of rock units that underlie the area. Consider how well groundwater would flow through each layer by considering the typical permeability for this rock type, along with the additional information contained within this figure and within the descriptions in the textbook (Chapter 17 Investigation). Table 4. Proposed Remediation Plan In the space below, briefly summarize your conclusions about the sources of the contamination, explaining the logic you used to identify facilities that contaminated the water. Briefly summarize how you propose to stop further flow of contaminated water, specifically by drilling wells to intercept and treat the water

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Chapter 17 Investigation Worksheet: Who Polluted Surface Water and Groundwater in This Place? To complete this worksheet, see the instructions in the textbook (Chapter 17 Investigation). After completing, you will take a quiz posted on Blackboard with matching, fill-in-the-blank, and multiple-choice questions pertaining to this assignment. The map in Figure 1 has locations of wells (lettered A to P), samples of river water (labeled R1 to R8), and samples of springs (labeled S1 to S4). Various farms, factories, mines, and other facilities are also shown. Only the roads (gray lines) and outlines of the facilities are shown, not the actual buildings and other details. Colors (or shades of gray) on the worksheet represent in a general way the types of rocks and sediment exposed on the surface; check the cross section in the textbook for details. Do the following: (1) draw on this map contours of water-table elevations and draw large arrows showing the direction of groundwater flow; (2) shade in areas of contamination and use the directions of groundwater flow and stream flow to determine which facilities caused the contamination; (3) draw a large X over these facilities; (4) draw circles around two wells that you predict will remain free of contamination; and (5) write the letter W to mark the location of new wells you propose to drill to intercept the contamination. Reference the textbook for additional information. Notes: (1) a recent geologic study has shown that Slidetown and Springtown are NOT sources of contamination, and (2) contamination can follow permeable units through the subsurface but is less likely to travel through less permeable units even though the water table is shown as cutting across the units (which it does). Table 1: Location Map Table 2. Elevations of the Water Table and Concentrations of Contamination This table shows water-table elevations in meters and concentrations of contamination in milligrams per liter (mg/L) for each of the lettered wells, and the concentration of contamination in samples from four springs and eight river segments. The location of each sample site is marked on the figure. Table 3. Stratigraphic Section This stratigraphic section represents the sequence of rock units that underlie the area. Consider how well groundwater would flow through each layer by considering the typical permeability for this rock type, along with the additional information contained within this figure and within the descriptions in the textbook (Chapter 17 Investigation). Table 4. Proposed Remediation Plan In the space below, briefly summarize your conclusions about the sources of the contamination, explaining the logic you used to identify facilities that contaminated the water. Briefly summarize how you propose to stop further flow of contaminated water, specifically by drilling wells to intercept and treat the water

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