Sulfate concentrations at the study areas sites for the Grassland Bypass Project in 1996 through 2001. Each concentration represents the level of sulfate present in each grab sample collected for each toxicity testing period. All data in milligrams per liter (mg/L). Analysis was completed by BOR. (Key at bottom of table.)

 

Month Date Site Location
B C D F DMC
October

1996

10/8/96 1400 89 480 140 32
10/10/96 1400 89 480 140 31
10/12/96 1600 85 540 150 26
November

1996

11/12/96 1200 124 311 227 65.8
11/14/96 1380 120 336 231 25.8
11/16/96 1420 138 465 214 24.5
December

1996

12/10/96 1590 138 330 284 32.6
12/12/96 1540 124 351 255 32.5
12/14/96 1330 133 269 288 32.5
January

1997

1/7/97 766 105 170 347 28.8
1/9/97 1210 107 229 172 26.7
1/11/97 1210 115 224 199 19.8
February

1997

2/4/97 1310 104 241 389 49.4
2/6/97 1420 135 315 410 50.4
2/8/97 1660 200 450 351 58.6
March

1997

3/11/97 1600 391 1010 147 34.2
3/12/97 1500 361 953 156 38.5
3/13/97 1440 429 845 175 42.7
April

1997

4/15/97 1800 402 1440 248 35.9
4/17/97 1750 340 1080 259 37.7
4/19/97 1680 378 1120 251 37.2
May

1997

5/13/97 1520 348 1270 197 37.3
5/15/97 1450 117 683 111 12.6
5/17/97 1320 253 1070 209 23.4
5/20/97 1300 102 688 181 36.3
June

1997

6/10/97 940 75.6 458 184 48
6/12/97 1360 278 1120 179 36.3
6/14/97 1520 248 1160 157 36.2
July

1997

7/8/97 827 183 489 88.4 37.9
7/10/97 1170 210 939 168 19.7
7/12/97 1170 313 1080 144 19.0
August

1997

8/5/97 958 173 666 132 50.9
8/7/97 944 185 926 146 17.0
8/9/97 1120 182 1120 122 15.6
September

1997

9/9/97 925 137 873 107 42.7
9/11/97 839 118 649 186 16.3
9/13/97 874 100 639 127 28.0
9/16/97 734 84.8 370 147 20.2
October

1997

10/14/97 1570 122 415 164 46.8
10/16/97 2010 120 481 209 44.4
10/18/97 1990 123 492 190 29.7
November

1997

11/4/97 1730 173 545 205 41.0
11/6/97 1720 170 543 192 28.8
11/8/97 1800 179 528 202 27.5
December

1997

12/2/97 1390 167 317 277 35.2
12/4/97 1440 166 299 297 57.1
12/6/97 990 164 305 294 45.7
January

1998

1/20/98 1560 138 208 421 70.6
1/22/98 1600 110 161 399 52.2
1/24/98 1490 121 181 428 39.7
February

1998

2/17/98 976 107 238 346 68.8
2/19/98 1000 119 230 406 60.7
2/21/98 1270 111 268 349 79.2
March

1998

3/10/98 1870 206 434

337

79.6

3/12/98 1840 236 499

290

67.6

3/14/98 1760 271 548

272

76.3

April

1998

4/7/98 1620 340

893

346

47.5
4/9/98 1890 232

676

389

46.2
4/11/98 2100 242

878

363

55.1
May

1998

5/12/98 2000

488

1470

156

27.3
5/14/98 1900

308

1240

115

35.4
5/16/98 1170

268

605

163

32.2
June

1998

6/9/98 1590

279

1390 91.7 28.7
6/11/98 1680 196 817 114 20.5
6/13/98 1770 127 594 125 20.3
July

1998

7/6/98 1390

179

854

91.7 20.7
7/8/98 881

155

896

88.7 18.8
7/10/98 1300

164

893

80.2 28.8
August

1998

8/10/98 1480

364

1050

84 41
8/12/98 1350

294

906

93 24
8/14/98 1290

182

884

99 24
September

1998

9/8/98 1500 67 861 110 47
9/10/98 1390 84 1180 119 19
9/12/98 1470 94 1170 136 20
October

1998

10/12/98 1390 71 317 115 15
10/14/98 1630 69 287 108 17
10/16/98 1660 77 373 112 25
November

1998

11/10/98 1510 126 342 148 18
11/12/98 1470 131 322 160 48
11/14/98 1560 139 318 161 35
December

1998

12/07/98 1710 176 374 205 44
12/09/98 1690 186 389 225 50
12/11/98 1440 193 343 226 53
January

1999

1/11/99 1520 276 499 200 69
1/13/99 1480 274 469 205 77
1/15/99 1500 267 442 208 97
February

1999

2/8/99 1350 269 482 260 47
2/10/99 1410 272 586 231 45
2/12/99 1380 215 403 259 56
March

1999

3/8/99 1860 286 734 229 40
3/10/99 1730 296 716 246 43
3/12/99 1840 322 778 234 51
April

1999

4/5/99 2010 423 1010 365 78
4/7/99 2150 394 1010 363 67
4/9/99 1920 355 875 275 78
May

1999

5/10/99 1720 345 1380 206 35
5/12/99 1770 217 943 177 37
5/14/99 1780 448 1480 265 38
June

1999

6/14/99 1500 414 1190 149 30
6/16/99 1580 332 1120 164 32
6/18/99 1600 417 1340 191 43
July

1999

7/12/99 1360 308 1190 128 24
7/14/99 1370 245 1060 120 18
7/16/99 1370 260 1060 135 18
August

1999

8/9/99 1170 230 1020 89 19
8/11/99 1020 299 1110 62 16
8/13/99 866 296 1230 130 12
September

1999

9/13/99 1430 104 638

112

48
9/15/99 1370 74 843 115 22
9/17/99 1520 77 758 114 28
October

1999

10/11/99 1460 69 382 176 58
10/12/99 1560 69 342 172 20
10/15/99 1400 70 285 147 19
November

1999

11/8/99 1370 107 345 172 61
11/10/99 1130 111 324 164 23
11/12/99 1230 108 272 170 22
December

1999

12/13/99 1380 203 395 278 64
12/15/99 1350 222 461 274 30
12/17/99 1490 216 436 287 80
January

2000

1/3/00 1520 182 326 324 51
1/5/00 1400 206 336 312 25
1/7/00 1430 205 381 322 25
February

2000

2/7/00 1600 233 572

343

107
2/9/00 1540 222 637

337

99
2/11//00 1390 260 573

272

64
March

2000

3/6/00 1600 296 711 277 47
3/8/00 1710 311 771 262 37
3/10/00 1600 312 702 266 51
April

2000

4/3/00 1740 358 979 198 32
4/5/00 1630 384 1030 189 31
4/7/00 - - - - -
May

2000

5/1/00 1990 480 1560 239 39
5/3/00 1730 502 1560 197 38
5/5/00 1850 373 1530 203 40
June

2000

6/12/00 1290 283 1040 149 31
6/14/00 1230 310 946 148 50
6/16/00 1220 397 1020 167 49
July

2000

7/10/00 1350 250 1100 133 18
7/12/00 1200 271 1130 137 34
7/14/00 1200 325 1090 142 18
August

2000

8/14/00 1130 289 1110 110 23
8/16/00 1050 208 923 118 17
8/18/00 1210 175 1120 115 15
September

2000

9/11/00 1110 58 675 101 23
9/13/00 1090 55 505 135 22
9/15/00 1050 71 508 136 36
October

2000

10/16/00 1360 47 299 162 28
10/18/00 1230 60 205 175 28
10/20/00 1110 61 180 185 28
November

2000

11/13/00 1340 130 293 196 29
11/15/00 1470 142 352 192 30
11/17/00 1490 151 367 213 28
December

2000

12/11/00 1350 207 432 201 39
12/13/00 1450 209 426 209 29
12/15/00 1470 219 481 213 29
 

January

2001

1/8/01 1180 297 532 193 34
1/10/01 1350 267 521 205 36
1/12/01 1280 239 423 205 105
February

2001

2/12/01 1340 276 553 199 60
2/14/01 1350 290 588 202 31
2/16/01 1360 299 595 220 33
March

2001

3/12/01 1720 555 599 263 90
3/14/01 1640 307 576 274 98
3/16/01 1780 326 635 286 59
April

2001

4/9/01 1910 465 1300 247 122**
4/11/01 1890 346 1030 250 44
4/13/01 2000 366 1050 263 34
May

2001

5/14/01 1580 204 898 162 40
5/16/01 1450 191 709 132 41
5/18/01 1450 324 1120 148 40
June

2001

6/11/01 1510 423 1250 204 74
6/13/01 1450 640 1400 187 37
6/15/01 1440 698 1380 153 53
July

2001

7/09/01 1150 529 1100 134 28
7/11/01 1220 489 980 120 28
7/13/01 1300 583 1110 115 26
August

2001

8/13/01 995 490 1070 122 26
8/15/01 1050 691 1010 113 28
8/17/01 1040 231 804 102 30
September

2001

9/10/01 1370 90 547 144 30
9/12/01 1340 108 581 178 32
9/14/01 988 131 614 164 32

Key

DMC= Delta Mendota Canal
NT=Not tested
"-" = Future sample
BOR = US Bureau of
Reclamation                                                                                                                                                                                                         ** = Sample re-analyzed and result confirmed

 

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