24-Hour 2019 Design Value Estimation

4-km CMAQ simulation for the SJV domain

2005 2006 20072007 DV 2017 2018 20192019 DV 44.0 42.0 48.0 44.7 20.7 20.3 23.221.4 3 3 3 3 3 3

RRF Q1 Q4 NH4 0.55 0.55 NO3 0.52 0.52 SO4 0.76 0.80 OC 0.26 0.26 EC 0.22 0.22 Salt 0.82 0.68 Geologic 0.66 0.75
Split Q1 Q4 NH4 0.13 0.11 NO3 0.42 0.38 SO4 0.05 0.02 OC 0.26 0.34 EC 0.02 0.04 Salt 0.01 0.01 Geologic 0.04 0.03 PB Water 0.08 0.07 Total 1.00 1.00

2005→ 2017 2005Q1 2/3/20051/25/20051/16/20051/31/20053/8/20052/12/20051/13/20051/22/2005 44.0 32.0 27.0 24.0 23.0 22.0 19.0 19.0 NH4 5.68 4.11 3.46 3.07 2.94 2.81 2.42 2.42 NO3 18.21 13.1911.09 9.84 9.42 9.00 7.74 7.74 SO4 2.11 1.53 1.29 1.14 1.09 1.04 0.90 0.90 OC 11.25 8.14 6.85 6.08 5.82 5.56 4.78 4.78 EC 0.75 0.54 0.46 0.40 0.39 0.37 0.32 0.32 Salt 0.31 0.22 0.19 0.17 0.16 0.15 0.13 0.13 Geologic 1.70 1.23 1.04 0.92 0.88 0.84 0.72 0.72 PB Water 3.49 2.53 2.13 1.89 1.81 1.73 1.49 1.49 Total 43.5 31.5 26.5 23.5 22.5 21.5 18.5 18.5

2017Q1

NH4 3.37 2.44 2.05 1.82 1.74 1.66 1.43 1.43 NO3 9.52 6.89 5.80 5.14 4.92 4.71 4.05 4.05 SO4 1.61 1.16 0.98 0.87 0.83 0.80 0.68 0.68 OC 2.89 2.09 1.76 1.56 1.49 1.43 1.23 1.23 EC 0.16 0.12 0.10 0.09 0.08 0.08 0.07 0.07 Salt 0.25 0.18 0.15 0.14 0.13 0.12 0.11 0.11 Geologic 1.12 0.81 0.68 0.60 0.58 0.55 0.48 0.48 PB Water 1.88 1.36 1.15 1.02 0.97 0.93 0.80 0.80 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 21.3 15.6 13.2 11.7 11.3 10.8 9.3 9.3 Stockton - Hazelton Street

98th Percentile Rank

Current Mass

Future Mass2005Q4 12/12/200511/21/200512/15/200512/6/200512/21/200511/18/200511/24/200512/9/2005 63.0 46.0 43.0 37.0 34.0 32.0 31.0 28.0 NH4 7.16 5.21 4.87 4.18 3.84 3.61 3.49 3.15 NO3 23.6917.25 16.1113.83 12.7011.9411.5610.42 SO4 1.51 1.10 1.03 0.88 0.81 0.76 0.74 0.67 OC 21.0715.3414.3312.3011.29 10.62 10.28 9.27 EC 2.22 1.62 1.51 1.30 1.19 1.12 1.08 0.98 Salt 0.49 0.36 0.34 0.29 0.27 0.25 0.24 0.22 Geologic 1.86 1.36 1.27 1.09 1.00 0.94 0.91 0.82 PB Water 4.49 3.27 3.05 2.62 2.40 2.26 2.19 1.97 Total 62.5 45.5 42.5 36.5 33.5 31.5 30.5 27.5

2017Q4 NH4 4.05 2.95 2.75 2.37 2.17 2.04 1.98 1.78 NO3 12.38 9.01 8.42 7.23 6.64 6.24 6.04 5.45 SO4 1.22 0.88 0.83 0.71 0.65 0.61 0.59 0.53 OC 5.47 3.98 3.72 3.19 2.93 2.76 2.67 2.41 EC 0.50 0.36 0.34 0.29 0.27 0.25 0.24 0.22 Salt 0.34 0.25 0.23 0.20 0.18 0.17 0.16 0.15 Geologic 1.40 1.02 0.95 0.81 0.75 0.70 0.68 0.61 PB Water 2.39 1.74 1.62 1.39 1.28 1.20 1.17 1.05 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 28.2320.6919.3616.6915.3614.4814.0312.70

2006→ 2018 2006Q1 2/10/20061/11/20062/25/20061/5/20062/22/20061/17/20061/20/20062/7/2006 42.0 38.0 35.0 30.0 25.0 22.0 22.0 22.0 NH4 5.42 4.90 4.51 3.85 3.20 2.81 2.81 2.81 NO3 17.3715.7014.4412.35 10.26 9.00 9.00 9.00 SO4 2.01 1.82 1.67 1.43 1.19 1.04 1.04 1.04 OC 10.73 9.70 8.92 7.63 6.33 5.56 5.56 5.56 EC 0.71 0.64 0.59 0.51 0.42 0.37 0.37 0.37 Salt 0.29 0.27 0.24 0.21 0.17 0.15 0.15 0.15 Geologic 1.63 1.47 1.35 1.16 0.96 0.84 0.84 0.84 PB Water 3.33 3.01 2.77 2.37 1.97 1.73 1.73 1.73 Total 41.5 37.5 34.5 29.5 24.5 21.5 21.5 21.5

2018Q1 NH4 3.21 2.90 2.67 2.28 1.90 1.66 1.66 1.66 NO3 9.08 8.21 7.55 6.46 5.36 4.71 4.71 4.71 SO4 1.53 1.39 1.28 1.09 0.91 0.80 0.80 0.80 OC 2.75 2.49 2.29 1.96 1.63 1.43 1.43 1.43 EC 0.15 0.14 0.13 0.11 0.09 0.08 0.08 0.08 Salt 0.24 0.22 0.20 0.17 0.14 0.12 0.12 0.12 Geologic 1.07 0.96 0.89 0.76 0.63 0.55 0.55 0.55 PB Water 1.79 1.62 1.49 1.28 1.06 0.93 0.93 0.93 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 20.3 18.4 17.0 14.6 12.2 10.8 10.8 10.8 Current Mass

Future Mass Current Mass

Future Mass2006Q4 12/7/200612/31/200612/4/200612/19/200612/25/200612/13/200611/19/200611/22/2006 47.0 47.0 36.0 36.0 36.0 30.0 22.0 21.0 NH4 5.33 5.33 4.07 4.07 4.07 3.38 2.46 2.35 NO3 17.63 17.63 13.4613.4613.4611.18 8.15 7.77 SO4 1.13 1.13 0.86 0.86 0.86 0.72 0.52 0.50 OC 15.6715.6711.9711.9711.97 9.94 7.25 6.91 EC 1.65 1.65 1.26 1.26 1.26 1.05 0.76 0.73 Salt 0.37 0.37 0.28 0.28 0.28 0.23 0.17 0.16 Geologic 1.39 1.39 1.06 1.06 1.06 0.88 0.64 0.61 PB Water 3.34 3.34 2.55 2.55 2.55 2.12 1.54 1.47 Total 46.5 46.5 35.5 35.5 35.5 29.5 21.5 20.5

2018Q4 NH4 3.01 3.01 2.30 2.30 2.30 1.91 1.39 1.33 NO3 9.21 9.21 7.03 7.03 7.03 5.84 4.26 4.06 SO4 0.90 0.90 0.69 0.69 0.69 0.57 0.42 0.40 OC 4.07 4.07 3.10 3.10 3.10 2.58 1.88 1.79 EC 0.37 0.37 0.28 0.28 0.28 0.24 0.17 0.16 Salt 0.25 0.25 0.19 0.19 0.19 0.16 0.12 0.11 Geologic 1.04 1.04 0.79 0.79 0.79 0.66 0.48 0.46 PB Water 1.78 1.78 1.36 1.36 1.36 1.13 0.82 0.78 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 21.1 21.1 16.3 16.3 16.3 13.6 10.0 9.6

2007→ 2019 2007Q1 1/24/20072/5/20071/9/20072/8/20072/2/20071/27/20071/18/20071/15/2007 52.0 50.0 48.0 42.0 41.0 39.0 38.0 34.0 NH4 6.73 6.47 6.20 5.42 5.29 5.03 4.90 4.38 NO3 21.5620.72 19.8817.3716.95 16.12 15.7014.02 SO4 2.50 2.40 2.30 2.01 1.96 1.87 1.82 1.62 OC 13.32 12.8012.2810.73 10.47 9.95 9.70 8.66 EC 0.89 0.85 0.82 0.71 0.70 0.66 0.64 0.58 Salt 0.36 0.35 0.34 0.29 0.29 0.27 0.27 0.24 Geologic 2.02 1.94 1.86 1.63 1.59 1.51 1.47 1.31 PB Water 4.13 3.97 3.81 3.33 3.25 3.09 3.01 2.69 Total 51.5 49.5 47.5 41.5 40.5 38.5 37.5 33.5

2019Q1 NH4 3.99 3.83 3.68 3.21 3.13 2.98 2.90 2.59 NO3 11.2710.83 10.40 9.08 8.86 8.43 8.21 7.33 SO4 1.90 1.83 1.76 1.53 1.50 1.42 1.39 1.24 OC 3.42 3.28 3.15 2.75 2.69 2.55 2.49 2.22 EC 0.19 0.18 0.18 0.15 0.15 0.14 0.14 0.12 Salt 0.30 0.29 0.28 0.24 0.23 0.22 0.22 0.19 Geologic 1.32 1.27 1.22 1.07 1.04 0.99 0.96 0.86 PB Water 2.23 2.14 2.05 1.79 1.75 1.66 1.62 1.45 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 25.1 24.2 23.2 20.3 19.9 18.9 18.4 16.5 Current Mass

Future Mass

Current Mass

Future Mass2007Q4 11/29/200712/14/200711/26/200712/17/200712/29/200711/2/200711/8/200712/23/2007 47.5 45.5 43.0 38.3 26.0 24.5 22.3 19.8 NH4 5.39 5.16 4.87 4.33 2.92 2.75 2.50 2.21 NO3 17.81 17.0616.1114.33 9.67 9.10 8.26 7.32 SO4 1.14 1.09 1.03 0.92 0.62 0.58 0.53 0.47 OC 15.8415.1714.3312.74 8.60 8.09 7.35 6.51 EC 1.67 1.60 1.51 1.34 0.91 0.85 0.78 0.69 Salt 0.37 0.36 0.34 0.30 0.20 0.19 0.17 0.15 Geologic 1.40 1.34 1.27 1.13 0.76 0.72 0.65 0.58 PB Water 3.37 3.23 3.05 2.71 1.83 1.72 1.57 1.39 Total 47.0 45.0 42.5 37.8 25.5 24.0 21.8 19.3

2019Q4 NH4 3.05 2.92 2.75 2.45 1.65 1.56 1.41 1.25 NO3 9.31 8.91 8.42 7.49 5.05 4.75 4.32 3.82 SO4 0.91 0.87 0.83 0.73 0.50 0.47 0.42 0.38 OC 4.11 3.94 3.72 3.31 2.23 2.10 1.91 1.69 EC 0.38 0.36 0.34 0.30 0.20 0.19 0.17 0.15 Salt 0.25 0.24 0.23 0.20 0.14 0.13 0.12 0.10 Geologic 1.05 1.00 0.95 0.84 0.57 0.54 0.49 0.43 PB Water 1.80 1.72 1.62 1.44 0.97 0.92 0.83 0.74 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 21.4 20.5 19.4 17.3 11.8 11.1 10.2 9.1 Current Mass

Future Mass