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Annual Site Environmental Report for 1999
Table 9.9 Summary of Maximum Groundwater Results from the Northeast Plume
Groundwater Monitoring.
Monitorlns Well (MW III)
,Parameter 124 126 145 255 256 258 283 284 288 291 292 293 294
Metals Aluminum ND ND ND 0.363 ND ND ND ND ND 0.398 ND ND ND
(rrig/L) Barium 0.226 0.189 0.095 0.194 0.282 0.206 0.246 0.24 0.252 0.238 0.241 0.209 0.245
Calcium 24.2 20.6 5'1.7 31.6 28.1 28.4 23.4 23.2 28.8 22.4 29.6 23.8 26
Chromium 0.0940.187 ND 0.419 ND 0.536 0.186 0.315 0.139 0.405 0.361 0.413 0.145
Iron 0.954 3.58 ND 2.59 ND 7.75 0.914 2;94 1.06 1.85 4.54 3.19 1.16
Magnesium 9.26 7.71 20.4 12.2 iO.7 10.9 9.25 9.18 11.3 8.69 11.8 9.49 10.4
Manganese ND ND ND 0.226 ND ND ND ND ND ND ND ND ND
Nickel ND 0.074 NO 0.195 NO 0.H3 NO ND ,ND ND 0.337 0.252 0.297
Potassium ND NO 5.01 2.32 NO ,2.18 ND ND ND ND ND ND ND
Selenium 0.005 ND NO 0.005 NO 0.005 ND ND ND ND ND ND NO
Sodium 44.3 45.1 6i.8 82.9 58.7 ,67.4 35.3 35.5 47.1 38.8 52.2 41.4 41.5
Uranium ND ND ND ·NO ND 0.001 ND ND ND ND ND ND NO
Other Metals' NO NO ND NO ND NO NO ND ND ND ND ND ND
Rad A'lpha activity 3.5 ND NO NO NO NO ND ND 3.71 ND 4.71 4.15 ND
(pCilL) Beta ,activity 52.22 94.84 84.78 ·;76.33 185.6 70.1 36.23 54.23 51.13 44.96 44.16 22.03 13.34
Technetium-99 ND ND ND NO 85 NO 25.43 ND 24.82 ND 24.2 ND ND
VOC Methylene NA NA NA NA NA NA 580 NA
(ug/L) chloride
NA NA NA NA NA
TCE 140 70 120 900 360 1300 250 310 860 280 1200 1300 1500
Other VOCs' ND ND ND NO ND NO ND ND ND ND ND ND NO
Other Chloride 62.1 47.6 113 76 58 73 62.3 62.7 79 60.6 77 66.5 74
(mg/L) Fluoride 0.16 0.19 0.17 0.21 0.18 0.19 0.12 0.12 0.13 0.12 0.15 0.13 0.12
Nitrate as
'.
1.7 1.2 ND 1.2 ND 1.7 1.3 1.4 1.7 1.5 1.6 1.7 1.7
Nitrogen