October 10, 2002   


Round #6 - Well Field Sampling Results for August 2002

Production Well #1:  3.65 ppb
Production Well #2:  4.26 ppb
Production Well #3:  .952 ppb
Production Well #5:  8.09 ppb
Test Well #1:  .810 ppb
Test Well #2:  .081 ppb
Test Well #3:  4.17 ppb
Test Well #4: 12.3 ppb
Test Well #5:  6.26 ppb
Test Well #6:  1.15 ppb
Test Well #6-2:  1.23 ppb
Test Well #9:  .812 ppb
Test Well #10:  1.10 ppb
Test Well #11:  1.73 ppb
Test Well #12:  .824 ppb
Based on sampling conducted from January to April of this year, Test Well #4 has shown the greatest concentrations of C-8.
In August 2002, at the request of the Ohio Environmental Protection Agency and the Little Hocking Water Association, DuPont began a focused field investigation to delineate concentrations of ammonium perfluorooctanoate, also known as C-8, in soil and groundwater in the Little Hocking Association well field.  Details of how the investigation was to be conducted were contained in a Work Plan entitled “Sampling Investigation Plan for Little Hocking Water Association Well Field, Washington County, Ohio”.   The Little Hocking Water Association, the Ohio Environmental Protection Agency, and DuPont approved this plan before it was implemented.
The field investigation consisted primarily of boring holes in the vicinity of Test Well #4 and obtaining samples of groundwater and soil for analysis.  DuPont took some, but not all, of the samples called for in the approved Work Plan.  Therefore, the investigation is currently incomplete until the remaining samples are taken and analyzed.
It is our understanding from the Ohio Environmental Protection Agency, that the investigation will be completed after review of the sampling results from the initial borings done in August.
During the well field investigation, the Little Hocking Water Association had a representative on-site from Bennett and Williams, an environmental engineering firm from Columbus, Ohio.
The following results are from borings taken as part of the Test Well #4 Investigation conducted in August.  These results are from groundwater samples only.  The results from the soil samples are not yet available.
Boring S2 (25-30):  78.0 ppb
Boring N1 (17-22):  50.8 ppb
Boring NW1 (19-25):  34.6 ppb
Boring S1 (25-30):  Non-Detect
Boring NE1 (21-27): 5.58 ppb
Boring NE1 (56-58):  .662 ppb
Boring SW1 (28.5-33):  .091 ppb
Boring SW1 (40-45):  1.02 ppb
Boring SW1 (35-40):  1.32 ppb
Boring SW1 (45-50):  .376 ppb
Boring E1 (21-26):  .416 ppb
Boring NE2 (20.7-25.7):  1.28 ppb
Boring W1 (29-34):  Non-Detect
Boring NW1 (24-29)-2:  6.22 ppb
Boring NW1 (24-29):  5.90 ppb
Boring W2 (33-38):  3.35 ppb
Boring SW1 (55-56):  .254 ppb
Boring SW1 (50-55):  .166 ppb
Obviously, we are concerned about the high concentrations of C-8 found in some of these borings, which are higher than what we have seen in the past.  However, these concentrations are still below the 150 part per billion level adopted by the State of West Virginia, and currently accepted by the Ohio Environmental Protection Agency.  Our drinking water does not come from these test wells and borings.  C-8 levels in our production wells are still far below the 150 ppb level.
At this point we are awaiting the results of the soil analyses and DuPont’s scheduling of the completion of the Sampling Investigation Plan for the Little Hocking Association Well Field. 
We remain committed to the pursuit and investigation of this problem, and are dedicated to the protection of our members and the integrity of our water system.