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Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin
City of Pleasanton
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Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin
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4/14/2026 10:07:54 AM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
4/21/2026
DESTRUCT DATE
15Y
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Zone 7 <br />Tennis Park Test Well <br />Water Quality Summary Table <br />CATIONS <br />Calcium mg/L 0.100 200.7 85 <br />Magnesium mg/L 0.050 200.7 54 <br />Potassium mg/L 1.00 200.7 1.9 <br />Sodium mg/L 0.50 200.7 43 <br />Hardness as CaCO3 mg/L 0.50 Calculation 440 <br />ANIONS <br />Chloride (Cl)mg/L 0.50 300.0 250/5002 75 <br />Fluoride mg/L 0.050 300.0 21 0.084 <br />Nitrate (as NO3) mg/L 0.44 300.0 451 12 <br />Nitrite (as NO2)mg/L 0.20 300.0 3.281 0.87 <br />Nitrate/Nitrite (as N) mg/L 0.10 353.2 101 2.9 <br />Sulfate (as SO4) mg/L 1.0 300.0 250/5002 56 <br />Total Alkalinity mg/L 4.1 SM 2320B 330 <br />PHYSICAL PARAMETERS <br />Color (A.P.H.A) Color Units 1.0 SM 2120B 152 1.0 <br />pH pH units 0.05 150.1 6.5/8.54 7.845 <br />Methylene Blue Active Substance mg/L 0.10 SM 5540C 0.52 ND <br />Elelctrical Conductivity @ 25°C μmhos/cm 1.0 SM 2510 B-1997 900/1,6002 864 <br />Total Dissolved Solids (TDS) mg/L 33 SM 2540C 500/1,0002 8205 <br />Odor Odor Units 1.0 SM 2150B 32 ND <br />Turbidity NTU 0.10 180.1 52 0.19 <br />INORGANICS <br />Aluminum mg/L 0.050 200.7 11/0.23 0.027 J <br />Aluminum (Dissolved) mg/L 0.050 200.7 ND <br />Antimony mg/L 0.0020 200.8 0.0061 0.00012 J <br />Arsenic mg/L 0.0020 200.8 0.0101 0.0011 J <br />Arsenic (Dissolved) mg/L 0.0020 200.8 0.0012 J <br />Barium mg/L 0.010 200.7 11 0.25 <br />Beryllium mg/L 0.010 200.7 0.0041 ND <br />Boron mg/L 0.10 200.7 13 0.34 <br />Cadmium mg/L 0.001 200.8 0.0051 ND <br />Chromium mg/L 0.010 200.7 0.0501 0.0064 J <br />Chromium (Dissolved) mg/L 0.010 200.7 0.0051 J <br />Hexavalent Chromium μg/L 0.20 218.6 101 4.85 <br />Copper mg/L 0.010 200.7 1.02 0.0025 J <br />Iron mg/L 0.050 200.7 0.32 0.066 J <br />Iron (Dissolved) mg/L 0.050 200.7 ND <br />Lead mg/L 0.0010 200.8 .0153 ND <br />Manganese mg/L 0.010 200.7 0.0502 0.032 <br />Manganese (Dissolved) mg/L 0.010 200.7 0.032 <br />Mercury mg/L 0.0002 245.1 0.0021 ND <br />Nickel mg/L 0.010 200.7 0.1001 ND <br />Selenium mg/L 0.0020 200.8 0.0501 0.0028 <br />Silicon as Si mg/L 0.10 200.7 11 <br />Silver mg/L 0.010 200.7 0.12 ND <br />Thallium mg/L 0.0010 200.8 0.0021 ND <br />Vanadium mg/L 0.010 200.7 0.053 0.0031 J <br />Zinc mg/L 0.050 200.7 52 0.015 J <br />OTHER ANALYSES <br />Benzo-a-pyrene μg/L 0.10 525.2 0.21 ND <br />1,2-Dibromo-3-Chloropropane DBCP μg/L 0.010 504.1 0.21 ND <br />Di(2-ethylhexyl)adipate μg/L 3.0 525.2 4001 ND <br />Di(2-ethylhexyl)phthalate μg/L 3.6 525.2 41 ND <br />Nitrogen/Phosphorus Pesticides μg/L *525.2 ND <br />Total Trihalomethanes (TTHM)μg/L 2.0 524.2 801 ND <br />PFAS <br />Perfluorinated Alkyl Acids ng/l 1.79 5336 ND <br />* - Various reporting and detection limits <br />1 - Primary MCL <br />2 - Secondary MCL (recommended/upper range) <br />3 - Notification Level <br />4 - Suggested lower/upper acceptable range <br />5 - Flagged with data qualifier by lab <br />6 - EPA Method 533 analysis includes 25 Perflourinated Alkyl Acids <br />ND = Non-Detect <br />J = Estimated value above the method detection limit and below reporting limit <br />Title 22 <br />4/8/2025MCLANALYTEUNITSREPORTING <br />LIMIT METHOD
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