Site 3 (Use for Site BSS04) Regression Modeling for 30-Day Antecedent Total Ammonia for Bio-Assessment Events
Summer Season for Salt Creek Site 3 (North 27th Street) Winter Season for Salt Creek Site 3 (North 27th Street)
Regression:  Y' = 0.29(X1) + 0.094(X2) - 0.017(X3) - 1.52 (See IS2-IS3 Ammonia Tab) Regression:  Y' = 0.29(X1) + 0.094(X2) - 0.017(X3) - 1.52 (See IS2-IS3 Ammonia Tab)
          USGS Predicted Cross           USGS Predicted Cross
    Theresa   Theresa N. 27th St. IS3 Check Using     Theresa   Theresa N. 27th St. N. 27th St. Check Using
    24-Hour Theresa 24-Hour 24-Hour Peak Mass     24-Hour Theresa 24-Hour 24-Hour Peak Mass
    Composite 24-Hour Average Average T. NH3N Balance [1]     Composite 24-Hour Average Average T. NH3N Balance [1]
Bio-Assessment 30-Day T. NH3N Average Flow Flow in Plume IS3 Bio-Assessment 30-Day T. NH3N Average Flow Flow in Plume IS3
Starting Antecedent (mg/l) [1] Flow (cfs) (cfs) (mg/l) T. NH3N Starting Antecedent (mg/l) [1] Flow (cfs) (cfs) (mg/l) T. NH3N
Dates Dates (X1) (gpd) (X2) (X3) (Y') (mg/l) Dates Dates (X1) (gpd) (X2) (X3) (Y') (mg/l)
08/29/94 No 30-day antecedent composite ammonia data available             12/19/94 11/19/94 7.28 17,750,000 27.5 100 1.50 2.07
                  11/20/94 5.60 18,440,000 28.5 123 0.72 1.38
08/21/95 07/22/95 0.04 20,920,000 32.4 128 ND 0.09   11/21/94 3.40 19,530,000 30.2 242 ND 0.51
  07/23/95             11/22/94 6.20 18,375,000 28.4 246 ND 0.80
  07/24/95 0.84 21,119,000 32.7 115 ND 0.31   11/23/94 5.60 18,125,000 28.0 150 0.22 1.13
  07/25/95 1.88 21,331,000 33.0 121 0.08 0.58   11/24/94 3.40 16,070,000 24.9 127 ND 0.75
  07/26/95 0.52 21,664,000 33.5 113 ND 0.22   11/25/94 7.80 16,560,000 25.6 121 1.13 1.73
  07/27/95 0.87 20,834,000 32.2 106 ND 0.33   11/26/94 7.80 16,720,000 25.9 120 1.17 1.76
  07/28/95 0.09 20,714,000 32.0 100 ND 0.10   11/27/94 3.90 17,480,000 27.0 174 ND 0.69
  07/29/95 0.72 20,550,000 31.8 95 0.07 0.31   11/28/94 7.84 18,575,000 28.7 185 0.35 1.30
  07/30/95 0.49 19,871,000 30.7 81 0.14 0.25   11/29/94 7.30 18,675,000 28.9 176 0.36 1.28
  07/31/95 1.38 21,283,000 32.9 93 0.40 0.55   11/30/94 8.40 18,710,000 28.9 149 1.14 1.71
  08/01/95 3.84 21,283,000 32.9 86 1.24 1.53   12/01/94 6.70 18,700,000 28.9 138 0.83 1.48
  08/02/95 2.22 20,612,000 31.9 90 0.60 0.85   12/02/94 7.56 18,680,000 28.9 133 1.16 1.72
  08/03/95 4.48 21,446,000 33.2 98 1.25 1.58   12/03/94 5.76 17,890,000 27.7 127 0.62 1.33
  08/04/95 1.98 20,879,000 32.3 105 0.32 0.68   12/04/94 3.40 17,360,000 26.9 125 ND 0.81
  08/05/95 0.57 20,431,000 31.6 153 ND 0.20   12/05/94 6.70 18,120,000 28.0 122 1.01 1.62
  08/06/95 0.20 19,505,000 30.2 151 ND 0.12   12/06/94 7.84 17,820,000 27.6 117 1.39 1.92
  08/07/95 2.43 20,489,000 31.7 106 0.37 0.80   12/07/94 9.52 17,960,000 27.8 101 2.17 2.69
  08/08/95 3.64 21,754,000 33.7 83 1.30 1.53   12/08/94 10.10 17,594,000 27.2 131 1.78 2.18
  08/09/95 4.82 21,581,000 33.4 72 1.81 2.29   12/09/94 11.80 18,130,000 28.0 133 2.33 2.57
  08/10/95 2.81 21,703,000 33.6 69 1.28 1.42   12/10/94 6.16 17,840,000 27.6 124 0.78 1.45
  08/11/95 1.27 21,448,000 33.2 64 0.88 0.71   12/11/94 3.90 17,175,000 26.6 119 0.11 0.95
  08/12/95 0.18 20,532,000 31.8 63 0.44 0.14   12/12/94 8.40 18,390,000 28.4 120 1.59 2.07
  08/13/95 0.06 19,982,000 30.9 62 0.35 0.08   12/13/94 7.80 17,840,000 27.6 119 1.35 1.89
  08/14/95 1.55 22,989,000 35.6 301 ND 0.27   12/14/94 7.80 17,865,000 27.6 120 1.33 1.87
  08/15/95 2.59 21,698,000 33.6 144 ND 0.68   12/15/94 9.00 18,240,000 28.2 123 1.69 2.14
  08/16/95 1.34 21,711,000 33.6 112 0.13 0.47   12/16/94 8.40 18,340,000 28.4 127 1.46 1.95
  08/17/95 8.45 22,107,000 34.2 101 2.46 2.93   12/17/94 4.50 17,930,000 27.7 133 0.16 1.02
  08/18/95 0.77 22,116,000 34.2 91 0.38 0.35   12/18/94 3.90 17,150,000 26.5 128 ND 0.89
  08/19/95 0.31 20,192,000 31.2 88 0.01 0.18   Averages 6.79 17,934,467 27.7 138 1.10 1.52
  08/20/95 0.20 19,280,000 29.8 84 ND 0.14 02/20/95 01/21/95 3.40 17,790,000 27.5 83 0.66 1.19
  Averages 1.74 21,035,310 32.5 106 0.71 0.68   01/22/95 2.80 17,300,000 26.8 93 0.24 0.88
09/13/96 08/14/96 8.68 24,646,000 38.1 384 ND 0.95   01/23/95 10.10 18,930,000 29.3 91 2.65 3.32
  08/15/96 2.73 24,983,000 38.6 983 ND 0.20   01/24/95            
  08/16/96 9.05 27,469,000 42.5 962 ND 0.50   01/25/95 15.70 18,650,000 28.9 96 4.17 4.79
  08/17/96 7.53 25,459,000 39.4 854 ND 0.44   01/26/95 9.50 18,540,000 28.7 86 2.50 3.23
  08/18/96 2.87 23,299,000 36.0 388 ND 0.36   01/27/95 8.40 18,270,000 28.3 92 2.04 2.65
  08/19/96 6.92 24,856,000 38.5 320 ND 0.92   01/28/95 2.80 17,695,000 27.4 97 0.23 0.86
  08/20/96 10.96 24,294,000 37.6 282 0.46 1.55   01/29/95 3.40 17,210,000 26.6 99 0.30 0.99
  08/21/96 12.16 24,162,000 37.4 241 1.48 1.97   01/30/95 6.16 19,000,000 29.4 95 1.44 1.97
  08/22/96 12.83 24,126,000 37.3 310 0.51 1.63   01/31/95 10.08 19,455,000 30.1 97 2.62 3.20
  08/23/96 13.58 23,376,000 36.2 486 ND 1.10   02/01/95   18,090,000 28.0 94 ND 0.07
  08/24/96 13.70 22,781,000 35.2 309 0.59 1.65   02/02/95 15.12 18,990,000 29.4 89 4.16 5.06
  08/25/96 6.75 21,370,000 33.1 259 ND 0.95   02/03/95 10.10 19,630,000 30.4 85 2.85 3.67
  08/26/96 11.48 24,403,000 37.8 356 ND 1.31   02/04/95 9.00 18,370,000 28.4 80 2.43 3.26
  08/27/96 13.92 24,257,000 37.5 789 ND 0.76   02/05/95            
  08/28/96 12.71 24,257,000 37.5 271 1.16 1.85   02/06/95 10.08 18,516,000 28.6 99 2.45 2.99
  08/29/96 13.28 23,298,000 36.0 229 1.89 2.17   02/07/95 10.64 18,664,000 28.9 156 1.68 2.05
  08/30/96 15.43 22,963,000 35.5 203 2.91 2.78   02/08/95 10.64 18,878,000 29.2 189 1.15 1.73
  08/31/96 13.60 22,142,000 34.3 186 2.54 2.59   02/09/95 8.96 18,776,000 29.0 247 ND 1.14
  09/01/96 7.99 20,228,000 31.3 174 0.82 1.52   02/10/95 5.60 18,620,000 28.8 270 ND 0.69
  09/02/96 6.49 21,364,000 33.1 164 0.72 1.39   02/11/95 3.90 18,230,000 28.2 190 ND 0.66
  09/03/96 14.06 22,101,000 34.2 156 3.18 3.16   02/12/95 3.81 17,770,000 27.5 157 ND 0.75
  09/04/96 16.13 22,664,000 35.1 150 3.96 3.85   02/13/95 7.80 18,675,000 28.9 160 0.78 1.49
  09/05/96 16.02 22,741,000 35.2 151 3.93 3.81   02/14/95 9.50 19,105,000 29.6 173 1.12 1.71
  09/06/96 15.42 22,267,000 34.4 152 3.67 3.57   02/15/95 12.90 19,115,000 29.6 155 2.42 2.54
  09/07/96 10.62 24,142,000 37.3 670 ND 0.69   02/16/95 10.10 19,281,000 29.8 107 2.43 2.89
  09/08/96 6.52 21,990,000 34.0 533 ND 0.51   02/17/95 9.52 19,078,000 29.5 149 1.52 1.97
  09/09/96 11.38 22,799,000 35.3 201 1.73 2.08   02/18/95 2.80 18,750,000 29.0 141 ND 0.66
  09/10/96 15.04 22,690,000 35.1 171 3.29 3.17   02/19/95 2.80 17,320,000 26.8 148 ND 0.59
  09/11/96 14.94 22,089,000 34.2 176 3.10 2.98   Averages 7.99 18,524,929 28.7 129 1.90 2.04
  09/12/96 15.29 21,284,000 32.9 148 3.55 3.48 03/04/96 02/03/96 12.74 18,862,000 29.2 156 2.32 2.46
  Averages 11.27 23,283,333 36.0 355 2.19 1.80   02/04/96 9.43 18,862,000 29.2 150 1.45 1.91
08/29/97 07/30/97 5.16 18,240,000 28.2 119 0.63 1.30   02/05/96 12.20 19,435,000 30.1 142 2.48 2.66
  07/31/97 4.16 17,990,000 27.8 109 0.47 1.14   02/06/96 17.91 19,368,000 30.0 133 4.30 4.11
  08/01/97 3.43 18,232,000 28.2 135 ND 0.79   02/07/96 17.33 19,666,000 30.4 130 4.22 4.13
  08/02/97 0.88 17,668,000 27.3 108 ND 0.30   02/08/96 16.62 20,008,000 31.0 130 4.06 4.03
  08/03/97 0.17 17,363,000 26.9 118 ND 0.12   02/09/96 14.23 18,981,000 29.4 122 3.35 3.50
  08/04/97               02/10/96 8.29 18,681,000 28.9 131 1.41 1.91
  08/05/97 6.58 18,223,000 28.2 127 0.91 1.54   02/11/96 4.27 18,011,000 27.9 139 0.00 0.94
  08/06/97 4.27 18,171,000 28.1 92 0.81 1.37   02/12/96 8.05 18,873,000 29.2 139 1.23 1.77
  08/07/97 5.80 18,059,000 27.9 85 1.36 1.97   02/13/96 11.89 18,936,000 29.3 124 2.62 2.88
  08/08/97 3.20 17,804,000 27.5 79 0.67 1.18   02/14/96 12.53 19,032,000 29.4 152 2.35 2.51
  08/09/97 0.60 16,690,000 25.8 76 ND 0.27   02/15/96 12.09 19,039,000 29.5 151 2.24 2.44
  08/10/97 0.11 16,093,000 24.9 76 ND 0.10   02/16/96 14.20 19,214,000 29.7 155 2.82 2.80
  08/11/97 4.08 19,186,000 29.7 369 ND 0.42   02/17/96 11.17 18,156,000 28.1 277 ND 1.22
  08/12/97 5.74 17,930,000 27.7 168 ND 1.03   02/18/96 5.73 17,483,000 27.0 899 ND 0.27
  08/13/97 6.07 18,205,000 28.2 130 0.71 1.39   02/19/96 4.74 18,290,000 28.3 581 ND 0.33
  08/14/97 7.74 18,374,000 28.4 112 1.52 2.04   02/20/96 10.99 18,789,000 29.1 357 ND 0.99
  08/15/97 6.61 18,751,000 29.0 99 1.47 2.01   02/21/96 18.32 18,682,000 28.9 298 1.54 1.87
  08/16/97 3.15 17,691,000 27.4 98 0.32 0.95   02/22/96 23.50 18,834,000 29.1 245 3.97 2.88
  08/17/97 1.13 16,427,000 25.4 86 ND 0.40   02/23/96 21.74 18,540,000 28.7 222 3.80 2.90
  08/18/97 7.29 17,998,000 27.8 87 1.76 2.40   02/24/96 14.63 18,011,000 27.9 212 1.81 2.01
  08/19/97 9.47 19,544,000 30.2 204 0.65 1.49   02/25/96 8.37 17,554,000 27.2 197 0.16 1.24
  08/20/97 9.30 18,601,000 28.8 107 2.10 2.57   02/26/96 12.42 18,477,000 28.6 224 1.03 1.67
  08/21/97 7.17 18,251,000 28.2 99 1.56 2.12   02/27/96 20.85 18,589,000 28.8 204 3.85 3.03
  08/22/97 6.61 18,267,000 28.3 92 1.52 2.10   02/28/96            
  08/23/97 4.68 17,949,000 27.8 87 0.99 1.56   02/29/96 17.68 18,924,000 29.3      
  08/24/97 3.22 18,306,000 28.3 81 0.71 1.19   03/01/96 18.62 18,773,000 29.0 226 2.85 2.48
  08/25/97 6.74 19,585,000 30.3 82 1.91 2.55   03/02/96 13.86 18,148,000 28.1 228 1.33 1.79
  08/26/97 10.12 19,447,000 30.1 79 2.93 3.91   03/03/96 7.76 17,766,000 27.5 203 ND 1.14
  08/27/97 10.42 18,969,000 29.3 82 2.90 3.79   Averages 13.18 18,689,103 28.9 226 2.40 2.21
  08/28/97 7.77 19,095,000 29.5 77 2.23 3.04 03/05/97 02/03/97 7.63 17,379,000 26.9 488 ND 0.51
  Averages 5.23 18,176,172 28.1 113 1.34 1.55   02/04/97 8.08 17,456,000 27.0 355 ND 0.71
08/16/98 07/17/98 10.20 25,990,000 40.2 252 0.99 1.71   02/05/97 11.45 17,310,000 26.8 325 ND 1.04
  07/18/98 5.19 24,775,000 38.3 214 ND 1.01   02/06/97 8.97 17,825,000 27.6 284 ND 0.96
  07/19/98 3.31 24,230,000 37.5 207 ND 0.68   02/07/97 3.27 16,892,000 26.1 260 ND 0.42
  07/20/98 8.81 26,380,000 40.8 194 1.61 1.93   02/08/97 3.17 17,013,000 26.3 245 ND 0.43
  07/21/98 8.38 25,943,000 40.1 183 1.61 1.92   02/09/97 2.92 16,354,000 25.3 239 ND 0.40
  07/22/98 12.05 27,254,000 42.2 355 ND 1.52   02/10/97 7.95 16,992,000 26.3 334 ND 0.72
  07/23/98 5.17 25,789,000 39.9 234 ND 0.96   02/11/97 9.70 17,177,000 26.6 424 ND 0.70
  07/24/98 5.35 24,400,000 37.7 203 0.16 1.08   02/12/97 8.17 17,043,000 26.4 346 ND 0.71
  07/25/98 2.94 23,325,000 36.1 193 ND 0.63   02/13/97 5.82 17,196,000 26.6 286 ND 0.63
  07/26/98 2.17 22,530,000 34.9 197 ND 0.47   02/14/97 9.67 17,298,000 26.8 260 ND 1.09
  07/27/98 6.92 24,907,000 38.5 194 0.85 1.45   02/15/97 4.44 16,637,000 25.7 244 ND 0.56
  07/28/98 9.38 25,168,000 38.9 191 1.66 1.99   02/16/97 2.25 16,141,000 25.0 246 ND 0.32
  07/29/98 12.02 25,500,000 39.4 256 1.38 1.94   02/17/97 3.67 17,995,000 27.8 256 ND 0.49
  07/30/98 10.30 26,150,000 40.5 471 ND 0.98   02/18/97 9.43 18,489,000 28.6 242 ND 1.20
  07/31/98 6.56 24,580,000 38.0 272 ND 1.00   02/19/97 11.01 17,602,000 27.2 219 0.57 1.46
  08/01/98 2.41 22,500,000 34.8 214 ND 0.48   02/20/97 13.43 17,864,000 27.6 210 1.47 1.85
  08/02/98 2.14 23,500,000 36.4 229 ND 0.42   02/21/97 9.75 17,539,000 27.1 203 0.46 1.39
  08/03/98 7.12 19,846,000 30.7 254 ND 0.95   02/22/97 2.69 16,995,000 26.3 199 ND 0.44
  08/04/98 7.35 25,010,000 38.7 275 ND 1.12   02/23/97 1.20 16,390,000 25.4 197 ND 0.24
  08/05/98 7.46 25,094,000 38.8 294 ND 1.07   02/24/97 5.46 17,212,000 26.6 190 ND 0.85
  08/06/98 8.90 24,835,000 38.4 263 0.26 1.39   02/25/97 9.79 17,493,000 27.1 186 0.75 1.51
  08/07/98 7.29 25,235,000 39.0 265 ND 1.16   02/26/97 5.88 17,560,000 27.2 179 ND 0.98
  08/08/98 2.59 23,885,000 37.0 252 ND 0.47   02/27/97 4.30 17,548,000 27.1 174 ND 0.76
  08/09/98 1.31 23,180,000 35.9 242 ND 0.28   02/28/97 4.57 17,200,000 26.6 169 ND 0.80
  08/10/98 5.16 24,970,000 38.6 228 ND 0.96   03/01/97 2.86 17,013,000 26.3 163 ND 0.55
  08/11/98 6.41 24,620,000 38.1 211 0.37 1.24   03/02/97 2.74 16,549,000 25.6 165 ND 0.51
  08/12/98 5.53 24,420,000 37.8 206 0.17 1.10   03/03/97 6.18 16,549,000 25.6 163 ND 1.06
  08/13/98 4.15 24,400,000 37.7 195 ND 0.88   03/04/97 7.21 17,277,000 26.7 160 0.40 1.29
  08/14/98 4.63 24,550,000 38.0 168 0.56 1.12   Averages 6.46 17,199,600 26.6 247 0.73 0.82
  08/15/98 2.25 24,000,000 37.1 152 0.05 0.63 02/01/99 01/02/99 6.34 15,984,000 24.7 124 0.57 1.35
  Averages 6.11 24,565,533 38.0 235 0.81 1.08   01/03/99 5.95 16,125,714 24.9 125 0.46 1.27
08/24/99 07/25/99 3.44 18,413,576 28.5         01/04/99 12.67 17,433,188 27.0 122 2.67 2.88
  07/26/99 14.40 19,689,902 30.5 198 2.22 2.30   01/05/99 16.18 18,360,036 28.4 126 3.76 3.73
  07/27/99 21.11 19,747,916 30.6 193 4.28 3.43   01/06/99 14.34 18,475,542 28.6 136 3.07 3.09
  07/28/99 16.04 19,382,288 30.0 187 2.84 2.66   01/07/99 12.52 18,270,862 28.3 136 2.51 2.68
  07/29/99 16.26 19,659,240 30.4 177 3.11 2.88   01/08/99 12.09 17,847,392 27.6 137 2.30 2.52
  07/30/99 20.15 19,384,304 30.0 167 4.38 3.70   01/09/99 10.97 18,079,968 28.0 136 2.02 2.34
  07/31/99 13.75 17,927,784 27.7 205 1.66 1.95   01/10/99 6.76 17,654,154 27.3 134 0.76 1.46
  08/01/99 9.01 16,103,572 24.9 167 0.64 1.43   01/11/99 13.17 18,909,176 29.3 139 2.74 2.85
  08/02/99 16.49 17,661,010 27.3 168 3.04 2.77   01/12/99 21.30 18,727,028 29.0 147 4.96 4.28
  08/03/99 18.96 18,159,434 28.1 195 3.39 2.82   01/13/99 18.87 18,455,790 28.6 140 4.33 3.93
  08/04/99 17.17 18,390,270 28.4 164 3.41 3.06   01/14/99 16.05 18,634,500 28.8 134 3.63 3.53
  08/05/99 15.72 17,649,638 27.3 153 3.07 2.89   01/15/99 17.52 19,331,258 29.9 147 3.94 3.64
  08/06/99 15.76 17,843,626 27.6 255 1.39 1.80   01/16/99 8.55 18,629,798 28.8 165 0.90 1.58
  08/07/99 12.70 16,887,994 26.1 238 0.64 1.48   01/17/99 8.68 17,972,382 27.8 166 0.83 1.54
  08/08/99 12.53 15,886,139 24.6 194 1.19 1.67   01/18/99 9.23 18,792,540 29.1 169 1.06 1.67
  08/09/99 17.99 17,858,030 27.6 177 3.36 2.89   01/19/99 18.53 19,216,408 29.7 166 3.90 3.40
  08/10/99 22.18 17,937,954 27.8 169 4.74 3.73   01/20/99 22.49 18,336,072 28.4 160 5.04 4.07
  08/11/99 19.70 17,739,266 27.4 293 1.89 1.94   01/21/99 23.01 18,503,732 28.6 158 5.25 4.25
  08/12/99 20.13 17,953,376 27.8 285 2.18 2.05   01/22/99 21.87 18,378,582 28.4 182 4.49 3.50
  08/13/99 22.40 17,176,078 26.6 214 3.93 2.87   01/23/99 15.65 17,791,964 27.5 163 2.90 2.73
  08/14/99 16.68 15,948,338 24.7 189 2.50 2.26   01/24/99 10.97 17,479,464 27.0 154 1.63 2.01
  08/15/99 9.25 15,584,049 24.1 177 0.47 1.35   01/25/99 13.69 17,612,828 27.2 142 2.65 2.71
  08/16/99 15.12 17,348,420 26.8 172 2.53 2.44   01/26/99 19.38 17,122,376 26.5 143 4.24 3.67
  08/17/99 17.85 17,595,356 27.2 168 3.43 2.98   01/27/99 18.80 17,288,020 26.7 154 3.90 3.35
  08/18/99 13.99 19,759,134 30.6 632 ND 0.77   01/28/99 20.93 17,275,782 26.7 149 4.61 3.84
  08/19/99 16.11 17,768,072 27.5 239 1.75 1.94   01/29/99 19.05 17,050,742 26.4 142 4.14 3.62
  08/20/99 18.79 17,369,408 26.9 189 3.32 2.76   01/30/99 13.97 16,555,479 25.6 148 2.48 2.50
  08/21/99 11.38 16,533,524 25.6 173 1.30 1.77   01/31/99 10.29 16,283,828 25.2 143 1.45 1.89
  08/22/99 8.22 16,188,719 25.0 164 0.47 1.34   Averages 14.66 17,885,954 27.7 146 2.91 2.86
  08/23/99 13.64 17,680,502 27.4 161 2.33 2.40
  Averages 15.56 17,774,231 27.5 209 2.48 2.36
[1]  Assuming 0.1 mg/l ambient total ammonia upstream of Theresa St. Plant.