Open-File Report 2006–1058

U.S. GEOLOGICAL SURVEY
Open-File Report 2006–1058

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Table 16. Specific conductance and concentrations of selected chemical constituents in water from industrial and municipal wells completed in the N aquifer, Black Mesa area, Arizona, 1974–2005.

[μS/cm, microsiemens per centimeter at 25°C; °C, degrees Celsius; mg/L, milligram per liter; <, less than. Dashes indicate no data]

Year Specific
conductance,
field (μS/cm)		 Dissolved
solids, residue
at 180°C (mg/L)		 Chloride,
dissolved
(mg/L as Cl)		 Sulfate,
dissolved
(mg/L as SO4)
Forest Lake NTUA 1
1982 470 --- 11 67
1986 --- 660 35 300
1990 375 226 8.2 38
1991 1350 183 10 24
1993 693 352 35 88
1994 1734 430 56 100
1995 470 274 13 60
1995 1,030 626 86 160
1995 488 316 16 71
1996 684 368 44 79
1997 11,140 714 78 250
1998 489 350 37 71
1999 380 259 16 49
2001 584 398 50 84
2002 452 268 22 50
2003 385 228 10 40
2004 222 263 16 40
2005 402 272 18 44
Second Mesa PM2
1968 670 --- 14 35
1990 590 364 6.5 16
1991 1595 292 10 15
1993 630 350 7.5 15
1994 1605 342 7.6 15
1995 610 357 7.2 14
1997 1646 356 7.1 14
2001 597 352 7.1 15
2002 608 357 7.5 14
2003 601 359 6.3 14
2005 615 361 6.8 13
Peabody 2
1967 221 --- 5.0 21
1971 211 --- 2.8 18
1974 210 144 2.8 17
1975 230 163 5.0 20
1976 260 133 3.6 16
1979 220 --- 3.4 24
1980 225 145 11 20
1986 172 --- 2.6 8.1
1987 149 113 5.0 9.1
1993 163 124 1.7 8.9
1998 93 119 2.2 7.9
1999 167 115 2.3 8.1
2005 134 124 2.1 8.2
Keams Canyon PM2
1982 1,010 --- 94 35
1983 1,120 --- 120 42
1984 1,060 578 96 36
1988 1,040 591 97 34
1990 1,020 600 94 34
1992 1,010 570 93 36
1993 1,040 590 92 36
1994 975 562 86 32
1995 1,010 606 99 32
1996 1,020 596 96 34
1997 1,070 590 96 33
1998 908 558 78 29
1999 1,040 595 97 35
2004 945 2603 97 32
2005 828 601 97 34
Kits’iili NTUA 2
1997 1524 269 3.6 4.3
1998 379 270 3.8 4.1
2000 454 274 4.0 4.1
2001 409 276 5.0 4.5
2002 439 264 4.5 4.4
2003 445 275 4.2 4.4
2004 367 273 4.0 4.6
2005 424 271 3.7 3.7
Kykotsmovi PM2
1988 368 212 3.2 8.6
1990 355 255 3.2 9.0
1991 1374 203 4.4 7.9
1992 363 212 3.3 8.4
1994 1365 212 3.6 8.5
1995 368 224 3.1 6.2
1996 365 224 3.3 8.5
1997 1379 222 3.0 8.0
1998 348 223 3.3 7.3
1999 317 221 3.5 7.9
2001 339 230 3.5 8.2
2002 350 215 3.4 7.9
2003 364 219 3.5 7.8
2004 261 223 3.5 8.3
2005 316 221 3.1 6.9
Dennehotso PM2
1964 350 --- 12 31
1992 226 131 9.8 19
1993 298 164 8.2 16
1997 1305 190 11 14
1999 314 196 14 15
2005 339 205 10.5 14
Peabody 6
1968 201 --- 3.0 13
1974 500 333 11.0 40
1977 240 --- 3.2 13
1979 260 --- 3.2 19
1980 260 160 3.5 15
1986 182 --- 2.3 9.6
1988 173 127 2.4 9.1
1993 181 126 1.9 6.6
1996 177 122 1.5 6
2005 174 122 1.5 5.7
Rough Rock PM5
1964 1,120 (3) 100 110
1970 610 (3) 13 50
1983 1,090 (3) 130 110
1984 11,100 613 130 99
1986 1,010 633 140 120
1988 1,120 624 130 4110
1991 11,210 574 130 110
1993 1,040 614 130 110
1994 11,180 626 130 110
1995 1,110 648 140 110
1996 1,100 634 130 110
1997 11,060 628 130 112
1998 894 637 133 112
1999 1,050 630 129 110
2001 980 628 125 110
2002 1,120 636 129 109
2003 1,080 642 127 110
2004 653 649 128 109
2005 1,053 639 128 113
Shonto PM2
1961 290 --- 10 16
1973 280 --- 7.1 20
1986 302 --- 10 14
1988 285 171 13 14
1992 321 186 22 19
1993 324 197 17 16
1996 323 188 15 17
2002 355 215 22 22
2003 357 239 20 22
2005 346 205 17 20
Kayenta PM2
1982 360 (3) 4.5 58
1983 375 (3) 5.9 60
1984 1370 209 4.2 51
1986 300 181 8.2 30
1988 358 235 3.8 74
1992 383 210 5.6 78
1993 374 232 3.7 78
1994 1371 236 4.2 77
1995 371 250 4.2 72
1996 370 238 3.8 76
1997 379 230 3.9 77
1998 349 236 3.7 71
1999 364 236 4.0 72
2001 331 234 5.0 73
2002 363 237 5.1 67
2003 378 273 5.9 88
2004 303 241 4.0 72
2005 374 231 3.7 76

1Value is different in Black Mesa monitoring reports printed before 2000. The earlier reports showed values determined by laboratory analysis.

2Value changed from Black Mesa monitoring report for 2003–2004.

3Value is different in Black Mesa monitoring reports printed before 2000. The earlier reports showed values determined by the sum of constituents.

4Value is different in Black Mesa monitoring reports printed before 2000. The earlier reports applied a different rounding definition.

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