AR226-2036 PECKSR 07/28/98 11:53 AM To: cc: Subject: SZAKATBK, MILLERSR, HALBERRM PLAYTIS , MILLERW , PARSONMA, MAYLESM , ZIPFEL pathforward and problems with detemiination of C8 In air Based on high reported C8 results for -the air samples collected on and due to erratic 6C results, I recommend resareples be taken from these locations.

AR226-2106 Test Results Sample Date Range Concentration Range Action Level Industrial Hygiene lfl/79 1231/79 100% Sample Dt Sample?

AR226-2164 2Z H "Ss8 gg || It ^.aaals ss??

AR226-2206 Fine Powder C-8 Scrubber Particle Size Analysis ;<'";(,. ^

Stack Parameters AR226-2226 ^Vent ID 3'61ZCE conaiats of IS one"fbot diamelBr venia.

AR226-2290 Chris E Shoop 09/05/2002 02:32 PM To: cc: Subject: Debbie J Mulrooney/AE/DuPontQDuPont, wevociaur@comcast.net Robert F Pinchot/DEV/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPontQDuPont, Ta-Wei Fu/SE/DuPontQDuPont, Robert L Ritchey/CL/DuPontQDuPont Stacks & Emissions tor Current and 2003 Modeling Debbie / Bob, Please see the attached sheet named Stacks & Surfactant Emissions- 12c.zip for 2001,2002, and 2003 emission estimates.

AR226-2384 PERSONAL & CONFIDENTIAL 6/13/B4 TO; H.

AR226-2449 tiT"'/^ HEERC AT A1 AT EU01S2 r'1" '" 09/17/97 03:57 PM 3i To: cc: Subject: BRANDERA AT A1 AT EU01S2 .

AR226-2577 j'AndFewS'HarttBn ----:-- "^ ----------01/31/2002 O'^SSTVn To: cc; Subject: M.

AR226-2587 Division of Water Resources 1201 Greenbrier Street Charleston, WV 2531)-1108 304-558-2108 Fax: 304-558-2780 West Virginia Department of Environmental Protection Bob Wise Governor 3 July 2002 Miehtel 0.

AR226-2646 00 01 05/09'02 13:51 ' .< .

AR226-2682 4 AR226-2682 C-8 BIODEGRADATION IN ----GROUND WATER---- Andrew Hartten Dave Ellis May 7, 1998 GEOLOGICAL CROSS SECT SAMPLING LOCATIONS SITE CONCEPTUAL MODEL Source Areas Former anaerobic digestion pond (sludges removed) C-8 up to 614 mg/kg @ 8 - 10 foo Ground water at 309 SITE CONCEPTUAL MODEL Hydrogeology Sand and gravel 65-100 feet deep Yields up to 300 GPM Production wells influence GW flo Linear velocity 1 ft/day K= loo ft/ LUBECK WELL FIELD Travel time from anaerobic pond is about 5 years *& 2 ppb discharge concentration WHY STUDY C-8 DEGRADAT IN GROUND WATER?

AR226-2778 FOR DU POMT USE ONLY Copies to Haskell E.

AR226-2904 cc; Haskell Laboratory Report N6.

AR226-3005 i'^S-i'^s^'f'S ....;'); a :ii;%a ^''"a'-i:-3A'"f;^''--".1^'M^!