DMSTA Simulation Results Case: STA1W_All Period: 01/01/00 to 02/28/03
Case: Stormwater Treatment Area  1 West; Seepage calibrated to 7/99 - 6/01 water budget (abtew et al); seepage recycled within project -     G302 Inflow does not have composite sampling.
Input Series sta1w Tanks in Series 6.0 Surface Area (km2) 27.0000
Simulation Period 08/01/94 thru 02/28/03 Mean Water Load  (cm/d) 3.6 Bypass Volume 0.0%
Output Period 01/01/00 thru 02/28/03 Max Water Load (cm/d) 22.6 Mean Depth (cm) 54
Startup Interval (days) 2526 Iterations 1 Inflow Conc  (ppb) 153.7 Max Depth (cm) 87
Avg Interval (days) 30 Inflow P Load (mg/m2-yr) 2917 Freq Depth <  5 cm 0.0%
Parameter Set:   none Outflow FWM  Conc (ppb) 40.0 Load Reduction 75%
K  (m/yr) 10.34 Sm (mg/m2)  0 Outflow C with Bypass 40.0 Time Freq Conc > 10 ppb 100%
C1 (ppb) 22.0 Sp (mg/m2) 0 95th Percentile (ppb) 54.5 Vol Freq Conc > 10 ppb 100%
C0  (ppb) 2.0 Qout Intercept 2.0 Outflow Geo. Mean (ppb) 28.7 Storage Turnover (1/yr) 7.8
Zx  (cm) 60 Qout Exponent 4.0 Outflow GM,  Q>0 (ppb) 28.7 Mean Stored P (mg/m2) 2690
Wtr Bal Error 0.0% Knet-Plug Flow (m/yr) 16.7 Storage Inc/Net Removal 58%
Mass B Error 0.9% Knet-NCSTR (m/yr) 18.6 Outfl. Seepage (cm/d/cm) 0.008
Calibration  Statistics for Period: 07/01/01 thru 02/28/03 Mean Mean
Count Observed Predicted Residual Resid% RSE% R2
Mean Depth (cm) 20 64.9 62.5 2.4 4% 12% 45%
Flow (cm/day) 20 6.24 4.99 1.25 25% 30% 85%
Flow-Wtd-Mean Conc (ppb) 19 46.5 43.5 2.9 7%
Geometric Mean Conc (ppb) 19 38.0 35.5 2.5 7% 28% 57%
Mean Conc (ppb) 19 41.9 39.1 2.7 7% 29% 49%
Outflow Load (mg/m2-d) 20 2.90 2.17 0.73 34% 46% 72%
Pred Q x Conc (mg/m2-d) 19 2.65 2.27 0.38 17% 35% 74%
 
 
Obs Load2 = Predicted Flow x Obs Conc
Green lines on x axis of concentration plots indicate model calibration period.
05/04/03