A little bit of irony here. The stupid twits invent a weird pretend scientific test to prove one thing and actually prove the very last thing they intended which is that there both have been and are free phase and residual DNAPL in the Municipal Upper and Lower Aquifers beneath the town of Elmira. Keep in mind how late in the game the dirty polluter and their fellow travellors decided that the high concentrations of both NDMA and chlorobenzene needed further efforts. Not back in 1998 when the off-site groundwater pumping began but many years later they added pumping wells W8 and W9 to address specific problems on the east and west sides of Union St. not very far from Park Ave. The east side of the street was actually at the edge of the Yara (Nutrite) property and the pumping well went right down to the Municipal Lower Aquifer. High chlorobenzene concentrations were embarrassing and needed to be reduced in order to continue the DNAPL coverup which said that free phase DNAPLS had never left the Uniroyal Chemical site. The W9 pumping well also went right through to the Municipal Lower Aquifer and in fact its' well screen rested on the surface of the exposed Bedrock Aquifer. There is no LAT (Lower Aquitard) located here thus providing a direct route for contamination. Yes this is one of the main routes that has contaminated the Bedrock Aquifer with both NDMA, chlorobenzene and everything else despite the professional liars on behalf of Lanxess Canada/Uniroyal Chemical saying otherwise.
Table 2 (CH38A ML aquifer) gives us our first hint. This observation well located by Industrial Dr. and Oriole Parkway (Sanyo Canada right there) reacted strongly to the cessation of pumping at W3R almost two hundred metres southwards. From Non-Detect for chlorobenzene on June 25/26 before pumping stopped, it in a few days jumped to 40 and later 45 ppb. after pumping was stopped at W3R. After pumping was restarted concentrations of chlorobenzene fell to Non-Detect again. This is due to likely residual DNAPL left over from the years long heavy pumping at W4 further north and a little east of CH38 and had caused unusually high concentrations of chlorobenzene at that well for decades. W4 beside the Howard St. Water Tower and observation well OW57-32R was the location of free phase DNAPL 100 feet below ground surface originally confirmed and then denied by CRA, Uniroyal and the M.O.E..
Table 2 (OW119-27 MU aquifer) tells a somewhat similar story. Prior to pumping being stopped this well three metres north of pumping well W3R had a concentration of 68.1 ppb. of chlorobenzene and within a few days of the cessation of pumping it was at 30.7 ppb. dropping down to .98 (yes less than 1) ppb over the shutdown weeks and then jumping back up to 83.3 ppb. after pumping at W3R was restored. Clearly the core of the chlorobenzene plume has been drawn towards W3R by its' pumping and then drifts away when pumping stops. The ongoing chlorobenzene concentrations up to the drinking standard criteria of 80 ppb. after nearly thirty years of pumping are the obvious and clear result of subsurface residual or free phase DNAPL presence which dissolves very much more slowly in water than NDMA and most other solvents.
Table 2 (OW155-32 ML aquifer) This observation well is located about five metres north of pumping well W5A and had a chlorobenzene concentration of Non-Detect prior to the shutdown of pumping. Within a few days its' concentration had jumped to 135 ppb. It stayed above the drinking water standard throughout the pump shutdown period and then somewhat oddly remained high (151 ppb) even more than two months after pumping restarted at W5A. I see two possibilities here. This pumping well is very close to the south-west corner of the Uniroyal/Lanxess site and either free phase or residual DNAPL exists very nearby or since pumping well W4 to the west (Water Tower area) was shut down several years ago the remaining contaminant plume has via W5A pumping migrated eastwards towards itself (i.e. W5A). Either way this again is the second area where DNAPL left the Uniroyal site decades ago and has permanently contaminated the Elmira Aquifers (including Bedrock).
Lastly we have Table 2 (CH44D ML aquifer) Here we have a monitoring well twenty metres north of pumping well W8. I guess I may have saved the best for last. Its' concentration prior to the cessation of pumping was 4.56 ppb (parts per billion). Within a few days of pumping being stopped the chlorobenzene concentration had soared to 703 ppb. !!! It remained high throughout the shutdown period exceeding 1,000 ppb. on two occasions. Then in November two months after pumping restarted it was back down to 20.1 ppb. !!! This tells me a couple of things. Firstly either residual or free phase DNAPL is present right there in the ML aquifer very close to W8 and CH44D and the volume of groundwater impacted is small leading to amazingly fast reactions to both stopping and restarting the pumping regime. Also based upon a similar reaction to pumping by NDMA I suspect that the NDMA may very well be mixed in with the DNAPL .
What have I slowly learned over thirty-six years? Thin skinned and faint of heart individuals have a much higher tolerance for well dressed, well spoken liars, cheats and thieves than they do for those who would point out these character deficiencies and speak of them. Hence my apologies to the Jens, Sandys, Sebastians, Nathans and others who are far more impressed than I by the Ramin Ansaris, Allan Deals, Lou Almeidas, Steve Quigleys, Hadley Stamms, Lubnas, Jasons, and so many more. While I don't share your character priorities I try to understand them despite occasionally finding them grating. Also the term "cheats and thieves" may be interpreted as more figurative than literal.
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