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11/05/2015 - Even Higher Readings - northward expansion

Significant items from Pall's April sampling (and DEQ's April split sampling) that confirm plume expansion, especially to the north:
  • IW-1-04-09-15-11:29-1  1ppb  1st ever hit here (only 5th sample ever... 2 nd in 1993, 1 nd in 2002, 2 nd in 2013.  only one other well in Evergreen area below 700 ft screened elevation: MW-122d all readings nd expect for 1ppb in 2011.
  • MW-129d-04-08-15-11:27-1  1ppb  confirms that prior 1ppb there was not a fluke
  • MW-130i-04-08-15-13:53-1  2ppb  same as prior month
  • MW-138i-04-17-15-10:18-1  6ppb  same as prior 2 readings
  • MW-138s-04-17-15-09:52-1  1ppb  same as prior reading in Jan
  • MW-141d-04-17-15-12:39-1  3ppb  same as prior reading in Jan
  • MW-141s-04-17-15-13:02-1  4ppb  up from 3ppb prior reading in Jan
(Note: MW-141s andMW-141d are screened on either side of the saturated 87-100 ft deep layer which also may be contaminated but no well was screened there)
  • MW-54d-04-14-15-11:10-1  86ppb  back over 85ppb confirming that March 19ppb reading may have been a mistake  (Way over 85ppb according to DEQ's 110ppb split sample!)
  • 465 Dupont-04-14-15-14:24-1  1300ppb  down some (temporarily like before?) from its highest ever reading of 1700ppb in Jan (but not down according to DEQ's 1700ppb split sample!)
  • MW-103s-04-14-15-13:00-1  73 ppb (way under DEQ's 99ppb split sample!)
  • MW-55?  have to wait until July? to see if June readings continue higher from highest ever 300ppb reading in Nov
  • MW-100? have to wait until July? to see if June readings continue higher from dramatically highest ever 2500ppb reading in Mar
  • IW-2?  have to wait until July? to see if June readings continue higher from dramatically highest ever 1800ppb reading in Nov
(All of the wells above should be split sampled every month until Pall's readings agree better with DEQ's for several months in a row.)

Pall April 2015 samples vs DEQ split samples:
dateWellPall ppbDEQ ppbratio%
4/14/2015465 Dupont13001700131%
4/14/2015MW-103d1113118%
4/14/2015MW-103s7399136%
4/14/2015MW-120dndnd
4/14/2015MW-121dndnd
4/14/2015MW-41d281864%
4/14/2015MW-41s2025125%
4/14/2015MW-54d86110128%
117%avg

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