Post date: Sep 01, 2014 4:27:0 AM
April 11, 2001
1,4-Dioxane Found in Deepest Aquifer (Continued)
The belated discovery and confirmation of 1,4-dioxane in the deepest aquifer at the Pall-Gelman contamination site raises a number of questions about the scope and effectiveness of the company's cleanup activities:
-Why is deep E aquifer contaminated so far from the core?
-What is the contamination of the E aquifer at the core & elsewhere?
-Why is so little monitoring is being done at that depth at all areas on the site?
-Why did the DEQ allow the company to suspend monitoring of certain wells in the E aquifer?
-Where is the contamination in the E aquifer coming from and why isn't the purging stopping it?
-Is similar leaching from one level to another going on from the shallow aquifers and soil layers to the C3 and D2 aquifers?
-Why aren't some of the shallow aquifer wells being monitored?
-Why are concentrations going up in all 4 current core purge wells?
-Why are there so few monitoring wells in the core area between the wells with the highest concentrations?
-What if the assumptions used in their groundwater model are wrong?
-Why does it take so long for new well data and monitoring data to be made public?
1,4-Dioxane Pollutes Ann Arbor Municipal Supply Well (more on this in the next installment!)