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Table 3 <br /> Groundwater Quality - Calendar Year 2024 <br /> Teichert Aggregates and Granite Construction -Vernalis Area, San Joaquin County <br /> (all units in mg/L, unless otherwise specified) <br /> Total Total Coliform <br /> Sampling EC TDS pH Hardness Ca Mg Na 6 Alkalinity OH CO3 11('03 SO4 ('I NO3 NO2 P F B Cu Fe IN111 "/.n Total Fecal <br /> Point Date (VS/cm) as CaCO3 as CaCO3 as 011 as CO3 as IICO3 as NO3 as NO2 (µg/L) (µg/L) (pg/I,) (µg/I,) (MPN/100 mL) <br /> Maximum Contaminant 6.5 to <br /> Level' 900* 500* 8.5+ 250* 250* 45 3 - 2 - 1,000* 300* 50* 5,000* - <br /> Hall 5/21/2024 732 440 7.4 196 52 16 66 2 180 <10 <10 220 77 76 8.1 <0.1 - 0.2 0.4 <10 <30 <10 40 <1.1 <1.1 <br /> Hall 11/15/2024 739 440 8.0 198 53 16 67 2 190 <10 <10 220 73 74 8.9 <0.1 - 0.2 0.4 <10 <30 <10 20 <1.1 <1.1 <br /> Faulkner 5/21/2024 800 500 7.3 224 60 18 63 2 180 <10 <10 220 89 87 16 <0.1 - 0.2 0.4 20 100 <10 60 <1.1 <1.1 <br /> Faulkner 11/15/2024 777 480 8.3 222 61 17 64 2 190 <10 <10 230 91 76 14 <0.1 - 0.2 0.4 10 <30 <10 90 <1.1 <1.1 <br /> S.Tracy#3 5/21/2024 857 540 7.2 250 64 22 67 2 180 <10 <10 220 158 54 22 <0.1 - 0.2 0.9 <10 60 <10 <20 - - <br /> S.Tracy#3 11/15/2024 853 560 7.9 264 68 23 71 2 180 <10 <10 220 173 52 17 <0.1 - 0.2 0.9 10 40 <10 <20 - - <br /> Brown's New 5/21/2024 861 550 7.0 249 65 21 70 2 190 <10 <10 230 186 40 13 <0.4 - 0.2 0.9 <10 <30 <10 <20 - - <br /> Brown's New 11/15/2024 865 570 7.8 260 68 22 73 2 190 <10 <10 230 185 40 10 <0.1 - 0.2 1.1 <10 <30 <10 <20 - - <br /> Granite#5 5/21/2024 927 630 7.0 278 72 24 79 2 200 <10 <10 240 201 48 12 <0.1 - 0.2 1.0 <10 30 <10 <20 - - <br /> Granite#5 11/15/2024 936 590 8.0 290 75 25 82 2 200 <10 <10 240 216 51 11 <0.1 - 0.2 1.1 <10 <30 <10 <20 - - <br /> Notes: <br /> 1. Maximum contaminant levels for drinking water supply. Concentrations marked"+"are secondary,i.e.,consumer acceptance limits for drinking water. For EC,TDS,chloride,and sulfate,the recommended(lower)values are given. <br /> Page I of I <br />