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<br />nD23B2 <br /> <br />14. Water quality data fOf.theSouthern Ute Indian Reservation, southwestern <br />Colorado (Hutchinson and Brogden 1976) <br />14a. Chemical analyses of groundwater samples. <br />14b. Chemical analyses of surface water samples <br /> <br />.179 <br />.196 <br /> <br />15. Geohydrology of the aquifers that may be affected by the surface mining of coal <br />in the Fruitland Fonnation in the San Juan basin, northwestern New Mexico <br />(Myers and Villanueva 1986) <br />15a. Groundwater sampling sites. . . . . . . . . . . . . . . . . . . . . <br />15b. Representative chemical analyses of water from selected observation <br />wells completed in the Pictured Cliffs Sandstone . . . . . . . . .. ....... 203 <br />15c. Representative chemical analyses of water from selected observation <br />wells completed in the coal seams and interbedded lithologic units <br />of the Fruitland Fonnation . . . . . . '. . . . . . . . . . . . . . . . . . . . . . . .204 <br />15d. Representative chemical analyses of water from selected observation <br />wells completed in the overburden of the Kirtland Shale and <br />Fruitland Fonnation . . . . . . . . . . . . . . . . . . . . . . . .. ....... 206 <br />15e. Representative chemical analyses of water from selected observation <br />wells in the alluviwn along the Chaco River and the tributaries to the <br />east and northeast. . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> <br />16. Methane-concentration and methane-isotope data for groundwater and soil gas in the <br />Animas River Valley, Colorado and New Mexico, 1990-1991 (U.S. Geological <br />Survey 1993a) <br />16a. Records of sampled water wells and springs . . . . . . . . . . . . . . . . <br />16b. Water level and water quality measurements and nearby soil-gas-methane <br />concentrations for selected water wells and springs . . . . . . . . . . . <br />16c. Gas-well records and maximum methane concentrations measured in soil <br />gas adjacent to gas-well casings . . . . . . . . . . . . . . . . . . . . . <br />16d. Molecular-composition and methane-isotope data for gas from well water, <br />open-field soil seeps, soil adjacent to gas-well casings, and gas-well <br />production casings at selected sites. . . . . . . . . . . . . . . <br /> <br />17. Navajo Indian Irrigation Project water quality data (U.S. Bureau of Indian Affairs 1993) <br />17a. Water quality data, San Juan River, 24 March 1992 . . . . <br />17b. Water quality data, San Juan River, May 1992-Apri11993 <br />17c. Water quality data, NlIP, October 1992-February 1993 . . <br /> <br />18. Navajo Indian Irrigation Project blocks 1-8 biological assessment (Keller-Bliesner <br />Engineering and Ecosystems Research Institute 1991) <br />18a. Water quality data from soil drill holes. . . . . . . . . . . . . . . . . . . <br />18b. Trace element concentrations (I"g/l) found in groundwater from observation <br /> <br />wells. . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . , . <br />18c. The concentration of selenium in seeps located on the Navajo Indian <br />Irrigation Project for various ecosystem components. All data for solids <br />are from April 1991 . . . . . . . . . . . '. . . . . . . . . . . . . . . <br />18d. Arsenic and selenium concentrations (I"g/I) found in seeps and springs. . . <br /> <br />v <br /> <br />.202 <br /> <br />. . . . .207 <br /> <br />.210 <br /> <br />.219 <br /> <br />.231 <br /> <br />. . .256 <br /> <br />.260 <br />.309 <br />.334 <br /> <br /> <br />.394 <br /> <br />.398 <br /> <br />.399 <br />.400 <br />