24-Hour 2019 Design Value Estimation

4-km CMAQ simulation for theSJV domain

2005 2006 20072007 DV 2017 2018 20192019 DV 63.2 60.5 73.0 65.6 34.9 32.7 39.535.7 7 7 6 7 7 7

RRF Q1 Q4 NH4 0.60 0.58 NO3 0.56 0.54 SO4 0.98 1.03 OC 0.42 0.44 EC 0.21 0.22 Salt 0.75 0.55 Geologic 0.71 0.86
Split Q1 Q4 NH4 0.13 0.15 NO3 0.40 0.45 SO4 0.04 0.04 OC 0.28 0.21 EC 0.04 0.03 Salt 0.01 0.00 Geologic 0.03 0.02 PB Water 0.08 0.09 Total 1.00 1.00

2005→ 2017 2005Q1 3/10/20053/11/20052/6/20052/10/20053/9/20052/12/20052/11/20052/5/2005 54.7 50.8 50.5 50.2 50.1 47.3 46.3 46.0 NH4 7.01 6.50 6.46 6.43 6.41 6.05 5.92 5.88 NO3 21.63 20.08 19.96 19.84 19.80 18.68 18.28 18.16 SO4 1.94 1.80 1.79 1.78 1.77 1.67 1.64 1.63 OC 15.44 14.33 14.24 14.16 14.13 13.33 13.05 12.96 EC 1.96 1.82 1.80 1.79 1.79 1.69 1.65 1.64 Salt 0.34 0.32 0.32 0.31 0.31 0.30 0.29 0.29 Geologic 1.72 1.59 1.59 1.58 1.57 1.48 1.45 1.44 PB Water 4.16 3.86 3.84 3.82 3.81 3.59 3.52 3.49 Total 54.2 50.3 50.0 49.7 49.6 46.8 45.8 45.5

2017Q1 NH4 4.26 3.95 3.93 3.90 3.90 3.68 3.60 3.57 NO3 12.21 11.33 11.27 11.20 11.18 10.54 10.32 10.25 SO4 1.90 1.76 1.75 1.74 1.74 1.64 1.61 1.60 OC 6.44 5.98 5.94 5.91 5.90 5.56 5.44 5.41 EC 0.41 0.38 0.38 0.38 0.38 0.36 0.35 0.35 Salt 0.26 0.24 0.24 0.24 0.23 0.22 0.22 0.22 Geologic 1.22 1.13 1.12 1.11 1.11 1.05 1.03 1.02 PB Water 2.40 2.23 2.21 2.20 2.20 2.07 2.03 2.02 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 29.6027.5027.3427.1827.13 25.63 25.09 24.93 Bakersfield - California Street

98th Percentile Rank

Current Mass

Future Mass2005Q4 11/24/200512/14/200512/15/200511/23/200511/22/200512/17/200512/16/200511/25/2005 85.7 80.5 80.1 79.7 73.0 63.6 63.2 62.5 NH4 12.62 11.85 11.79 11.73 10.74 9.35 9.29 9.19 NO3 38.73 36.3736.1836.0032.9628.6828.5028.18 SO4 3.68 3.45 3.43 3.42 3.13 2.72 2.71 2.67 OC 17.94 16.85 16.76 16.68 15.27 13.29 13.20 13.06 EC 2.71 2.55 2.53 2.52 2.31 2.01 2.00 1.97 Salt 0.31 0.29 0.29 0.29 0.27 0.23 0.23 0.23 Geologic 1.74 1.63 1.62 1.62 1.48 1.29 1.28 1.26 PB Water 7.47 7.01 6.98 6.94 6.35 5.53 5.50 5.43 Total 85.2 80.0 79.6 79.2 72.5 63.1 62.7 62.0

2017Q4 NH4 7.54 7.08 7.04 7.01 6.41 5.58 5.55 5.49 NO3 21.09 19.80 19.70 19.60 17.94 15.62 15.52 15.34 SO4 3.78 3.55 3.53 3.51 3.21 2.80 2.78 2.75 OC 7.93 7.45 7.41 7.38 6.75 5.88 5.84 5.77 EC 0.60 0.56 0.56 0.56 0.51 0.44 0.44 0.43 Salt 0.17 0.16 0.16 0.16 0.15 0.13 0.13 0.13 Geologic 1.50 1.40 1.40 1.39 1.27 1.11 1.10 1.09 PB Water 4.18 3.92 3.91 3.89 3.56 3.10 3.08 3.04 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 47.3 44.4 44.2 44.0 40.3 35.1 34.9 34.5

2006→ 2018 2006Q1 2/12/20062/11/20062/13/20062/10/20062/14/20062/9/20062/7/20062/8/2006 65.9 65.5 62.5 60.5 57.0 54.8 45.7 45.7 NH4 8.46 8.40 8.02 7.76 7.30 7.02 5.84 5.84 NO3 26.1025.9424.75 23.95 22.55 21.67 18.04 18.04 SO4 2.34 2.32 2.22 2.15 2.02 1.94 1.62 1.62 OC 18.63 18.52 17.66 17.09 16.10 15.47 12.88 12.88 EC 2.36 2.35 2.24 2.17 2.04 1.96 1.63 1.63 Salt 0.41 0.41 0.39 0.38 0.36 0.34 0.29 0.29 Geologic 2.07 2.06 1.97 1.90 1.79 1.72 1.43 1.43 PB Water 5.02 4.99 4.76 4.61 4.34 4.17 3.47 3.47 Total 65.4 65.0 62.0 60.0 56.5 54.3 45.2 45.2

2018Q1 NH4 5.14 5.11 4.87 4.71 4.44 4.27 3.55 3.55 NO3 14.74 14.64 13.97 13.52 12.73 12.23 10.18 10.18 SO4 2.29 2.28 2.18 2.11 1.98 1.91 1.59 1.59 OC 7.77 7.73 7.37 7.13 6.72 6.46 5.37 5.37 EC 0.50 0.49 0.47 0.46 0.43 0.41 0.34 0.34 Salt 0.31 0.31 0.29 0.28 0.27 0.26 0.21 0.21 Geologic 1.47 1.46 1.39 1.35 1.27 1.22 1.01 1.01 PB Water 2.90 2.88 2.75 2.66 2.50 2.40 2.00 2.00 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 35.6135.4033.7932.7130.83 29.65 24.7724.77 Future Mass

Current Mass

Future Mass Current Mass2006Q4 12/7/200612/25/200612/6/200612/5/200612/2/200611/22/200611/7/200612/24/2006 77.7 71.2 64.0 59.1 59.0 53.1 53.0 51.8 NH4 11.44 10.47 9.41 8.68 8.67 7.79 7.78 7.60 NO3 35.0932.1428.8726.6426.59 23.91 23.8623.32 SO4 3.33 3.05 2.74 2.53 2.52 2.27 2.27 2.21 OC 16.26 14.89 13.37 12.34 12.32 11.08 11.06 10.80 EC 2.46 2.25 2.02 1.86 1.86 1.67 1.67 1.63 Salt 0.28 0.26 0.23 0.22 0.21 0.19 0.19 0.19 Geologic 1.57 1.44 1.30 1.20 1.19 1.07 1.07 1.05 PB Water 6.77 6.20 5.57 5.14 5.13 4.61 4.60 4.50 Total 77.2 70.7 63.5 58.6 58.5 52.6 52.5 51.3

2018Q4 NH4 6.83 6.26 5.62 5.19 5.18 4.65 4.65 4.54 NO3 19.11 17.50 15.72 14.50 14.48 13.02 12.99 12.70 SO4 3.42 3.13 2.82 2.60 2.59 2.33 2.33 2.27 OC 7.19 6.58 5.91 5.46 5.45 4.90 4.89 4.78 EC 0.54 0.50 0.45 0.41 0.41 0.37 0.37 0.36 Salt 0.16 0.14 0.13 0.12 0.12 0.11 0.11 0.10 Geologic 1.36 1.24 1.11 1.03 1.03 0.92 0.92 0.90 PB Water 3.79 3.47 3.12 2.87 2.87 2.58 2.58 2.52 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 42.8939.32 35.3732.6832.62 29.3829.33 28.67

2007→ 2019 2007Q1 2/5/20072/4/20072/6/20071/10/20071/9/20072/3/20071/25/20071/26/2007 85.8 84.5 79.8 77.5 69.8 68.7 67.0 61.5 NH4 11.03 10.86 10.25 9.96 8.96 8.82 8.60 7.89 NO3 34.05 33.53 31.65 30.73 27.6627.22 26.5424.35 SO4 3.05 3.00 2.84 2.75 2.48 2.44 2.38 2.18 OC 24.3023.93 22.59 21.94 19.74 19.43 18.95 17.38 EC 3.08 3.03 2.86 2.78 2.50 2.46 2.40 2.20 Salt 0.54 0.53 0.50 0.49 0.44 0.43 0.42 0.38 Geologic 2.70 2.66 2.51 2.44 2.20 2.16 2.11 1.93 PB Water 6.55 6.45 6.09 5.91 5.32 5.24 5.11 4.69 Total 85.3 84.0 79.3 77.0 69.3 68.2 66.5 61.0

2019Q1 NH4 6.70 6.60 6.23 6.05 5.44 5.36 5.22 4.79 NO3 19.22 18.93 17.87 17.35 15.61 15.37 14.98 13.74 SO4 2.99 2.95 2.78 2.70 2.43 2.39 2.33 2.14 OC 10.14 9.99 9.43 9.15 8.24 8.11 7.91 7.25 EC 0.65 0.64 0.60 0.59 0.53 0.52 0.51 0.46 Salt 0.40 0.40 0.38 0.36 0.33 0.32 0.31 0.29 Geologic 1.91 1.88 1.78 1.73 1.55 1.53 1.49 1.37 PB Water 3.78 3.72 3.51 3.41 3.07 3.02 2.94 2.70 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 46.3045.6043.0741.8437.71 37.12 36.2033.25 Future Mass Current Mass

Future Mass

Current Mass2007Q4 11/3/200712/16/200711/2/200712/14/200711/15/200711/7/200712/13/200711/16/2007 80.2 73.0 71.5 70.7 70.5 68.9 65.2 64.2 NH4 11.81 10.74 10.52 10.40 10.37 10.13 9.59 9.44 NO3 36.23 32.9632.2731.9131.82 31.09 29.41 28.96 SO4 3.44 3.13 3.06 3.03 3.02 2.95 2.79 2.75 OC 16.78 15.27 14.95 14.78 14.74 14.41 13.63 13.42 EC 2.54 2.31 2.26 2.23 2.23 2.18 2.06 2.03 Salt 0.29 0.27 0.26 0.26 0.26 0.25 0.24 0.23 Geologic 1.63 1.48 1.45 1.43 1.43 1.40 1.32 1.30 PB Water 6.99 6.35 6.22 6.15 6.14 5.99 5.67 5.58 Total 79.7 72.5 71.0 70.2 70.0 68.4 64.7 63.7

2019Q4 NH4 7.05 6.41 6.28 6.21 6.19 6.05 5.72 5.64 NO3 19.73 17.94 17.57 17.37 17.32 16.93 16.01 15.77 SO4 3.53 3.21 3.15 3.11 3.10 3.03 2.87 2.82 OC 7.42 6.75 6.61 6.54 6.52 6.37 6.03 5.93 EC 0.56 0.51 0.50 0.49 0.49 0.48 0.45 0.45 Salt 0.16 0.15 0.14 0.14 0.14 0.14 0.13 0.13 Geologic 1.40 1.27 1.25 1.23 1.23 1.20 1.14 1.12 PB Water 3.91 3.56 3.48 3.44 3.43 3.36 3.17 3.13 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 44.2640.31 39.4939.05 38.9438.0636.03 35.48 Current Mass

Future Mass