Table 7. Water-quality data for samples collected from selected shallow wells
[µS/cm, microsiemens per centimeter; CaCO3, calcium carbonate; mg/L, milligrams per liter; µM/L, micromoles per liter; <, less than; --, no data; a, sample possibly aerated during collection; *, see table 8 for date samples were collected for trichloroethylene, cis-1,2,-dichloroethylene, and vinyl chloride]
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Nitro- Nitrogen
Spe- gen am- Manga- Chlo- cis-
cific Alka- nitrate, monia, nese, Iron, Sulfate, Sulfide, ride, Tri- 1,2-Di-
pH con- linity Dis- dis- dis- dis- dis- dis- dis- dis- Calcite chloro- chloro- Vinyl
(stand- duct- (mg/L solved solved solved solved solved solved solved solved satur- ethy- ethy- chlo-
Well ard ance as oxygen (mg/L (mg/L (mg/L (mg/L (mg/L (mg/L (mg/L ation lene lene ride Ethene Ethane
name Date units) (μS/cm) CaCO3) (mg/L) as N) as N) as Mn) as Fe) as SO4) as S2-) as Cl) index (μM/L) (μM/L) (μM/L) (μM/L) (μM/L)
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Well 33S 11/12/96* 6.2 1,276 413 <0.1 0.21 1.40 1.70 5.70 61 -- 150 -0.52 <0.76 182.6 78.4 -- --
02/11/97 6.7 1,250 386 <0.1 0.05 1.40 2.00 6.00 75 -- 140 -0.10 0.30 147.5 47.7 -- --
08/22/97 6.8 1,585 480 <0.1 0.06 1.60 2.60 18.10 170 0.056 190 0.14 <0.76 150.6 56.0 92.67 27.57
5/98 -- -- -- -- -- -- -- -- -- -- -- -- <6.85 312.9 36.0 60.24 33.59
Well 7S 11/12/96* 6.4 1,118 434 2.4a 0.63 0.84 0.03 0.01 37 -- 80 -0.28 63.55 90.3 1.02 -- --
02/11/97 6.7 1,024 441 1.1a 0.22 2.50 4.40 <0.01 32 -- 70 -0.01 6.15 11.4 0.08 -- --
08/21/97* 7.1 1,080 387 3.5 1.90 0.98 1.90 <0.01 110 0.060 56 0.49 50.23 142.4 <0.02 <0.93 <0.86
11/05/97 6.7 1,311 350 5.1 0.20 1.47 -- 0.01 78 0.015 14 -- 28.92 168.1 0.98 <0.93 <0.86
5/98 -- -- -- -- -- -- -- -- -- -- -- -- 59.25 280 <7.20 <0.93 <0.86
Well 2S 11/12/96* 6.4 908 335 2.5a 0.25 0.48 2.20 0.30 72 -- 45 -0.47 1,415 330.1 32.8 -- --
02/11/97 7.0 886 359 0.8a <0.02 0.48 1.90 0.24 69 -- 47 0.15 610.4 466.2 29.0 -- --
08/22/97 6.8 918 363 2.1 <0.02 0.47 2.10 0.28 67 0.068 46 0.00 1,302 355.9 <8.00 7.77 3.72
5/98 -- -- -- -- -- -- -- -- -- -- -- -- 702.1 279.4 17.3 10.37 2.39
Well 5S 11/12/96* 7.4 678 329 -- 0.91 0.02 <0.01 <0.01 75 -- 15 0.42 0.74 0.47 0.06 -- --
02/11/97 7.6 645 265 7.5a 0.59 0.02 <0.01 <0.01 75 -- 18 0.48 2.09 0.44 <0.02 -- --
08/22/97 -- 581 340 5.6 1.80 0.10 1.40 <0.01 78 0.034 11 -- -- -- -- <0.93 <0.86
11/05/97 7.5 578 255 5.4 1.10 0.05 -- 0.01 122 0.005 137 -- 3.73 3.77 <0.02 <0.93 <0.86
5/98 -- -- -- -- -- -- -- -- -- -- -- -- 10.96 5.20 <0.02 <0.93 <0.86
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