24-Hour 2019 Design Value Estimation

4-km CMAQ simulation for the SJV domain

2005 2006 20072007 DV 2017 2018 20192019 DV 74.5 50.1 57.9 60.8 39.3 26.5 30.532.1 3 3 3 3 3 3

RRF Q1 Q4 NH4 0.48 0.52 NO3 0.46 0.49 SO4 0.91 0.97 OC 0.33 0.42 EC 0.27 0.37 Salt 0.73 0.84 Geologic 0.82 1.01
Split Q1 Q4 NH4 0.14 0.15 NO3 0.45 0.49 SO4 0.07 0.03 OC 0.23 0.18 EC 0.01 0.02 Salt 0.01 0.01 Geologic 0.02 0.03 PB Water 0.08 0.09 Total 1.00 1.00

2005→ 2017 2005Q1 3/11/20052/3/20051/16/20052/6/20053/8/20051/25/20052/9/20051/31/2005 48.1 41.0 35.0 34.5 33.4 32.2 31.4 24.6 NH4 6.78 5.77 4.91 4.84 4.68 4.51 4.40 3.43 NO3 21.21 18.05 15.37 15.1514.66 14.1313.77 10.74 SO4 3.29 2.80 2.39 2.35 2.28 2.19 2.14 1.67 OC 11.00 9.36 7.97 7.86 7.61 7.33 7.14 5.57 EC 0.41 0.35 0.30 0.29 0.28 0.27 0.27 0.21 Salt 0.24 0.21 0.18 0.17 0.17 0.16 0.16 0.12 Geologic 0.90 0.77 0.65 0.64 0.62 0.60 0.59 0.46 PB Water 3.76 3.20 2.73 2.69 2.60 2.51 2.44 1.90 Total 47.6 40.5 34.5 34.0 32.9 31.7 30.9 24.1

2017Q1 NH4 3.97 3.38 2.88 2.83 2.74 2.64 2.58 2.01 NO3 9.81 8.35 7.11 7.01 6.78 6.53 6.37 4.97 SO4 2.98 2.54 2.16 2.13 2.06 1.99 1.94 1.51 OC 3.59 3.06 2.60 2.57 2.48 2.39 2.33 1.82 EC 0.11 0.09 0.08 0.08 0.08 0.07 0.07 0.06 Salt 0.18 0.15 0.13 0.13 0.12 0.12 0.11 0.09 Geologic 0.74 0.63 0.53 0.53 0.51 0.49 0.48 0.37 PB Water 2.05 1.74 1.48 1.46 1.42 1.36 1.33 1.04 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 23.9 20.4 17.5 17.2 16.7 16.1 15.7 12.4 Corcoran - Patterson Street

98th Percentile Rank

Current Mass

Future Mass2005Q4 12/12/200511/24/200512/15/200511/21/200512/9/200511/18/200512/6/200510/22/2005 92.5 77.8 74.5 64.6 57.7 51.5 50.7 43.2 NH4 13.66 11.48 10.99 9.52 8.49 7.57 7.45 6.34 NO3 45.0937.8836.2731.4128.0324.9924.6020.93 SO4 3.05 2.56 2.45 2.12 1.89 1.69 1.66 1.41 OC 16.73 14.05 13.45 11.6510.40 9.27 9.13 7.76 EC 1.58 1.33 1.27 1.10 0.99 0.88 0.86 0.74 Salt 0.47 0.40 0.38 0.33 0.29 0.26 0.26 0.22 Geologic 3.20 2.69 2.57 2.23 1.99 1.77 1.75 1.48 PB Water 8.22 6.91 6.61 5.73 5.11 4.56 4.48 3.81 Total 92.0 77.3 74.0 64.1 57.2 51.0 50.2 42.7

2017Q4 NH4 7.54 6.34 6.07 5.26 4.69 4.18 4.12 3.50 NO3 22.17 18.63 17.83 15.4513.78 12.2912.1010.29 SO4 2.95 2.48 2.37 2.05 1.83 1.63 1.61 1.37 OC 7.06 5.93 5.68 4.92 4.39 3.91 3.85 3.27 EC 0.58 0.49 0.47 0.40 0.36 0.32 0.32 0.27 Salt 0.40 0.33 0.32 0.28 0.25 0.22 0.22 0.18 Geologic 3.23 2.72 2.60 2.25 2.01 1.79 1.76 1.50 PB Water 4.32 3.63 3.48 3.01 2.69 2.40 2.36 2.01 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 48.8 41.0 39.3 34.1 30.5 27.2 26.8 22.9

2006→ 2018 2006Q1 2/10/20062/25/20062/13/20062/7/20061/11/20062/22/20061/5/20062/1/2006 63.8 38.7 32.1 30.4 29.2 25.7 24.4 23.9 NH4 9.01 5.44 4.50 4.26 4.09 3.59 3.40 3.33 NO3 28.21 17.02 14.08 13.3212.79 11.2310.65 10.43 SO4 4.38 2.64 2.19 2.07 1.99 1.74 1.65 1.62 OC 14.63 8.83 7.30 6.91 6.63 5.83 5.52 5.41 EC 0.54 0.33 0.27 0.26 0.25 0.22 0.21 0.20 Salt 0.32 0.19 0.16 0.15 0.15 0.13 0.12 0.12 Geologic 1.20 0.72 0.60 0.57 0.54 0.48 0.45 0.44 PB Water 5.00 3.02 2.50 2.36 2.27 1.99 1.89 1.85 Total 63.3 38.2 31.6 29.9 28.7 25.2 23.9 23.4

2018Q1 NH4 5.28 3.18 2.63 2.49 2.39 2.10 1.99 1.95 NO3 13.05 7.87 6.51 6.16 5.92 5.19 4.93 4.82 SO4 3.97 2.39 1.98 1.87 1.80 1.58 1.50 1.47 OC 4.78 2.88 2.39 2.26 2.17 1.90 1.80 1.77 EC 0.15 0.09 0.07 0.07 0.07 0.06 0.06 0.05 Salt 0.23 0.14 0.12 0.11 0.11 0.09 0.09 0.09 Geologic 0.98 0.59 0.49 0.46 0.44 0.39 0.37 0.36 PB Water 2.72 1.64 1.36 1.29 1.24 1.08 1.03 1.01 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 31.7 19.3 16.1 15.2 14.6 12.9 12.3 12.0 Current Mass

Future Mass Current Mass

Future Mass2006Q4 12/7/200611/7/200612/4/200612/31/200611/22/200611/16/200611/1/200612/1/2006 74.2 50.1 45.7 44.0 42.0 36.7 36.2 34.3 NH4 10.94 7.37 6.71 6.46 6.16 5.38 5.30 5.02 NO3 36.1224.3122.1521.3220.3417.7417.5016.56 SO4 2.44 1.64 1.50 1.44 1.37 1.20 1.18 1.12 OC 13.40 9.02 8.22 7.91 7.55 6.58 6.49 6.15 EC 1.27 0.85 0.78 0.75 0.71 0.62 0.61 0.58 Salt 0.38 0.26 0.23 0.22 0.21 0.19 0.18 0.17 Geologic 2.56 1.72 1.57 1.51 1.44 1.26 1.24 1.18 PB Water 6.58 4.43 4.04 3.89 3.71 3.23 3.19 3.02 Total 73.7 49.6 45.2 43.5 41.5 36.2 35.7 33.8

2018Q4 NH4 6.04 4.07 3.71 3.57 3.40 2.97 2.93 2.77 NO3 17.76 11.95 10.89 10.4810.00 8.72 8.60 8.15 SO4 2.36 1.59 1.45 1.39 1.33 1.16 1.14 1.08 OC 5.65 3.80 3.47 3.34 3.18 2.78 2.74 2.59 EC 0.47 0.31 0.29 0.27 0.26 0.23 0.23 0.21 Salt 0.32 0.21 0.19 0.19 0.18 0.16 0.15 0.15 Geologic 2.59 1.74 1.59 1.53 1.46 1.27 1.26 1.19 PB Water 3.46 2.33 2.12 2.04 1.95 1.70 1.68 1.59 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 39.2 26.5 24.2 23.3 22.3 19.5 19.2 18.2

2007→ 2019 2007Q1 2/5/20071/24/20071/9/20071/3/20072/17/20071/21/20071/18/20072/2/2007 75.0 59.5 56.1 53.9 47.4 44.0 38.2 34.5 NH4 10.61 8.40 7.91 7.60 6.68 6.19 5.37 4.84 NO3 33.2026.2924.7823.8020.90 19.3916.8015.15 SO4 5.16 4.08 3.85 3.70 3.25 3.01 2.61 2.35 OC 17.22 13.6412.85 12.3410.8410.06 8.71 7.86 EC 0.64 0.51 0.48 0.46 0.40 0.37 0.32 0.29 Salt 0.38 0.30 0.28 0.27 0.24 0.22 0.19 0.17 Geologic 1.41 1.12 1.05 1.01 0.89 0.82 0.71 0.64 PB Water 5.89 4.66 4.39 4.22 3.71 3.44 2.98 2.69 Total 74.5 59.0 55.6 53.4 46.9 43.5 37.7 34.0

2019Q1 NH4 6.21 4.92 4.63 4.45 3.91 3.63 3.14 2.83 NO3 15.36 12.16 11.46 11.01 9.67 8.97 7.77 7.01 SO4 4.67 3.70 3.48 3.35 2.94 2.73 2.36 2.13 OC 5.62 4.45 4.20 4.03 3.54 3.28 2.85 2.57 EC 0.17 0.14 0.13 0.12 0.11 0.10 0.09 0.08 Salt 0.28 0.22 0.21 0.20 0.17 0.16 0.14 0.13 Geologic 1.15 0.91 0.86 0.83 0.73 0.67 0.58 0.53 PB Water 3.21 2.54 2.39 2.30 2.02 1.87 1.62 1.46 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 37.2 29.5 27.9 26.8 23.6 21.9 19.1 17.2 Current Mass

Future Mass

Current Mass

Future Mass2007Q4 11/8/200712/14/200712/11/200711/2/200711/14/200711/29/200711/26/200711/5/2007 57.9 57.7 54.0 53.3 52.7 45.5 40.0 37.8 NH4 8.52 8.49 7.94 7.84 7.75 6.68 5.87 5.54 NO3 28.1328.0326.2225.8825.5822.0519.36 18.28 SO4 1.90 1.89 1.77 1.75 1.73 1.49 1.31 1.24 OC 10.4410.40 9.73 9.60 9.49 8.18 7.18 6.78 EC 0.99 0.99 0.92 0.91 0.90 0.77 0.68 0.64 Salt 0.30 0.29 0.28 0.27 0.27 0.23 0.20 0.19 Geologic 2.00 1.99 1.86 1.84 1.81 1.56 1.37 1.30 PB Water 5.13 5.11 4.78 4.72 4.66 4.02 3.53 3.33 Total 57.4 57.2 53.5 52.8 52.2 45.0 39.5 37.3

2019Q4 NH4 4.71 4.69 4.39 4.33 4.28 3.69 3.24 3.06 NO3 13.83 13.78 12.89 12.7212.58 10.84 9.52 8.99 SO4 1.84 1.83 1.71 1.69 1.67 1.44 1.27 1.20 OC 4.40 4.39 4.10 4.05 4.00 3.45 3.03 2.86 EC 0.36 0.36 0.34 0.33 0.33 0.28 0.25 0.24 Salt 0.25 0.25 0.23 0.23 0.22 0.19 0.17 0.16 Geologic 2.02 2.01 1.88 1.86 1.84 1.58 1.39 1.31 PB Water 2.70 2.69 2.51 2.48 2.45 2.12 1.86 1.75 Blank 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Total 30.6 30.5 28.6 28.2 27.9 24.1 21.2 20.1 Current Mass

Future Mass