ML20055C840

Responds to NRC Requesting Addl Info Re License SNM-1097 Renewal & GE Environ Rept Submitted in May 1989.Addl Data for Items 1-9 Noted in NRC Ltr & Explanation of Selected Tables to Facilitate NRC Review Encl

ML20055C840
Person / Time
Site:	07001113
Issue date:	06/21/1990
From:	Winslow T GENERAL ELECTRIC CO.
To:	Horn M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
NUDOCS 9006250235
Download: ML20055C840 (123)

Text

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FO B3 30. W%ngton. AC ?SC2 ~', 9!9 V54030 que June 21, 1990 Ms. Merri Horn l Uranium Fuel Section Fuel Cycle Safety Branch Division of Industrial and Medical Nuclear Safety,.NMSS U.S. Nuclear Regulatory Commission Washington, D.C,- 20555 Dear Min Jhorr.0

Subject:

Response to NRC Request for Additional Information Concerning the Materials License No. SNM-1097 Renewal

References:

1) NRC License SNM-1097, Docket #70-1113 2)' License Renewal Request TP Winslow to RM Bernaro, 5/23/8; i,,

3) Letter, M. Horn to TP Winslow, 5/4/90 In' response to your letter of May 4, 1990, the following information is provided regarding the GE-Environmental Report

' submittal dated May 1989: imv - The additional data for items 1-9 is submitted { as requested in your 5/4/90 referenced letter p - In response to item 10 in your~5/4/90 letter, ,1' "l-wo are providing all tables from Section 5 of the Environmental Report with 1989 data added. J, - An explanation of. selected tables is provided g. that we believe will facilitate NRC review. 10. If you have any questions, please contact me at (919) 675-5461. N Sincerely, y GE NUCLEAR ENERGY M y,. F T. Preston Winslow, Manager Licensing & Nuclear Materials Management cc: TPW-90-095 9006250235 900621 Ut PDR ADOCK 07001113 ff

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1P6agt 1 of 1. GE-WILMINGTON TREATED SANITARY SLUDGE URANIUM VALUES V (DATA FOR TABLE 5-14) g. Q. -

Sample-

-Sample

g-Date

-Number Location Analvte' Result Units Comments E 02/05/87. 773548 Sanitary Sludge uranium-0.080. ppm y-03/05/87 789805 Sanitary Sludge. uranium

<0.020 _ ppm Ji

~ 04/02/87 789818 Sanitary Sludge uranium-0.016. ppm CF 05/07/87 789839 Sanitary. Sludge. uranium 0.001 ppm j2 06/04/87 789856 Sanitary Sludge-uranium 0.060 ppm Ej 07/02/87 789877 Sanitary Sludge uranium 0.050. ppm. -i 08/06/87 789882 Sanitary Sludge uranium 1.300 ppm 4 09/30/87 791002 Sanitary Sludge uranium 0.210 ppm E 10/21/87 791007 Sanitary Sludge uranium 0.240 ppm L 11/30/87 791017 Sanitary Sludge uranium 0.170 ppm 3 S 12/03/87 791018 Sanitary Sludge uranium 0.030 ppm 12/10/87 791023 Sanitary Sludge uranium 0.160 ppm E 01/13/88 791024 Sanitary Sludge uranium 0.050 ppm R 01/21/88 791029 Sanitary Sludge uranium 0.020 ppm (, 02/02/88 791035 Sanitary Sludge uranium 0.030 ppm y 02/09/88 791034 Sanitary Sludge uranium 0.020 ppm 1 03/02/88 791040 Sanitary Sludge uranium 0.060 ppm = 03/14/88 791047 Sanitary Sludge uranium 0.010 ppm 3 04/05/88 791048 Sanitary Sludge uranium 0.050 ppm { 04/25/88 791056 Sanitary Sludge uranium 0.030 ppm E 05/09/88 791063 Sanitary Sludge uranium <0.020 ppm 2L 06/06/88 791097 Sanitary Sludge uranium 0.040 ppm o 07/05/88 841837 Sanitary Sludge uranium 0.020 ppm Sludge uranium 0.060 ppm M Sanitary' Sludge 08/15/88 841864 Sanitary uranium 0.010 ppm D 08/29/88 841870 09/26/88 841871 Sanitary-Sludge uranium 0.003 ppm 10/17/88 841874 Sanitary Sludge uranium 0.010 ppm 11/21/88 844924 Sanitary Sludge uranium <0.010 ppm 11/28/88 844925 Sanitary Sludge uranium 0.030 ppm 12/27/88 844965 Sanitary Sludge uranium <0.020 ppm 02/06/89 844968 Sanitary Sludge uranium <0.020 ppm 03/01/89 844976 Sanitary Sludge uranium <0.020 ppm 04/03/89 703509 Sanitary Sludge uranium <0.020 ppm 06/16/89 703511 Sanitary Sludge uranium <0.020 ppm } 07/05/89 703515 Sanitary Sludge uranium <0.020 ppm q 08/02/89 703521 Sanitary Sludge uranium <0.020 ppm 09/06/89 703525 Sanitary Sludge uranium <0.020 ppm J( 10/04/89 703529 Sanitary Sludge uranium <G.020 ppm 11/02/89 703532 Sanitary Sludge uranium <0.020- ppm 12/05/89 703537 Sanitary Sludge uranium <0.020 ppm =

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z = =. =g. ~ =_ _ l~~ i ~ ^Y ^ N.' '^ ' ' ~ Page'.1 of:13 GE-WILMINGTON. SOIL' SAMPLES _ URANIUM VALUES-x (DATA FOR TABLE 5-32). $a Q.. ' Sample Sample Result Units Comments E. Date . Number Location Analvte 01/11/83 337438 ' Soil Location 1 uranium' O.38 ppm 04/07/83. 464955 Soil'LocationL1-uranium 0.40 ppm-E' 07/21/83 495177 Soil Location 1 uranium 0.63 ppm -Q 10/13/83 498501 Soil Location 1 uranium 0.40 ppm 2-01/25/84 548550 Soil Location 1 uranium 0.67 ppm Ej 04/24/84 564977 Soil Location 1 uranium ' O.16 ppm 'l-07/17/84 593889-Soil Location 1 uranium 0.32 ppm 10/18/84 602779. Soil Location 1 uranium 0.67 ppm E-02/19/85 651702 Soil Location 1 uranium 0.42 ppm {. 04/18/85 666150 Soil Location 1 uranium 0.25 ppm = S 07/27/85 687202 Soil Location 1 uranium 0.31 ppm 10/03/85 706006 Soil Location 1 uranium 1.23-ppm E 01/23/86 727871 Soil Location 1 uranium 4.48 ppm 3: 04/17/86 743077 Soil Location 1 uranium' O.40 ppm ( 08/14/86 805114 Soil Location 1 uranium 0.49 ppn R 12/04/86 764833 Soil Location 1 uranium 1.04 ppm E 01/15/87 794906 Soil Location 1 uranium . :2. 7 4 ppm = 04/09/87 788751 Soil Location 1 uranium 1.61 ppm 3 07/16/87 830904 Soil Location 1 uranium 0.61 ppm {~ 10/13/87 791306 Soil Location 1 uranium 1.02 ppm E 02/10/88 858723 Soil Location 1 uranium 1.46 ppm 3, 04/26/88 852125 Soil Location 1 uranium 0.62 ppm g 07/19/88 833004 Soil Location 1 uranium 1.04 ppm 'N 10/20/88 842822 Soil Location'1 uranium 0.19 ppm 2 01/24/89 833164 Soil Location 1 uranium 0.26 ppm D 04/18/89 704834 Soil Location 1 uranium 0.44 ppm 07/26/89 713355 Soil Location 1 . uranium 0.35 ppm 10/05/89 713632 Soil Location 1 uranium .O.64 ppm 01/11/83 337439 Soil Location 2 uranium 0.54 ppm 04/07/83 464957 Soil Location-2 uranium 0.30-ppm 07/21/83 495180 Soil Location 2, uranium 0.30 ppm 10/13/83 498503 Soil Location 2 uranium 0.23 ppm l 01/25/84 548551 Soil Location 2 uranium 0.41 ppm j 04/24/84 564982 Soil' Location 2 uranium 0.32 ppm y 07/17/84 593878 Soil Location 2 -uranium 0.20 ppm q 10/18/84 602773 Soil' Location ~2 uranium 0.16 ppm o 02/19/85 651704 Soil Location 2 uranium 0.13 ppm. Q l 04/18/85 666151 Soil Location 2 ' uranium 0.19 ppm a l 07/27/85 687204. Soil Location 2 uranium 0.25 ppm 10/03/85 706005 Soil Location'2 uranium <0.03 ppm l l

Page 2'of:13 .GE-WILMINGTON. SOIL SAMPLES' URANIUM VALUES A. (DATA;FOR TABLE 5-32); s: 3.. Sample Sample _ Location Analvte Result Units Comments E {- Date -Number __ 01/23/86 727872 Soil:Locaticn 2 Luranium 0.25 ppm ~. 04/17/86' 743079 ' Soil Location 2 ' uranium 0.28-ppm Bl 08/14/86-805116. Soil _ Location 2 uranium 0.22; ppm O 12/04/86 764834 Soil Location 2 ' uranium ' O.22 ppm 2 01/15/87 794908 Soil' Location 2 uranium 0.55 ppm i3 04/09/87 788752 Soil Location 2 uranium D0.13 ppm E 07/16/87 830906 Soil Location ~2 uranium 0.13 ppm ~$ 10/13/87 791308 Soil Location 2 uranium 0.24 ppm E 02/10/88 858725 Soil Location 2 ~ uranium 2.22 ppm k. 04/26/88 852127 Soil _ Location 2 uranium 0.21 ppm g '07/19/88 -833006 Soil Location 2-uranium 0.17 ppm 10/20/88 842823 Soil Location 2 uranium 0.14 ppm E 01/24/89 833165 Soil Location 2 uranium 1.26 ppm jy 04/18/89 704835. Soil Location 2 uranium 0.34 ppm ( 07/26/89 713357 Soil Location 2 uranium 0.21 ppm R-10/05/89 713634 Soil Location 2 uranium 1.12 ppm 3, ~ 01/11/83 337440 Soil Location 3 uranium 0.23 ppm 2: 04/07/83 464958 Soil Location 3 uranium 0.23 ppm 3 07/21/83 495179 Soil Location 3 - uranium 0.23 ppm { 10/13/83 498504 Soil Location 3 uranium 0.33 ppm E 01/25/84 548553 Soil Location 3 uranium 0.32 ppm E 04/24/84 564976 Soil Location 3 uranium 0.45 ppm g 07/17/84 593887 Soil Location 3 uranium 0.40 ppm N 10/18/84 602780 Soil Location 3 uranium-0.45 ppm 2 02/19/85 651703 Soil Location 3 uranium' O.54 ppm D 04/18/85 666140 Soil Location 3 uranium 0.32 ppm 9 07/27/85 687203 Soil Location 3 uranium 0.37 ppm 10/03/85 706007 Soil Location 3 uranium-1.08 ppm 01/23/86 727873 Soil Location 3 . uranium 'O.19 ppm 04/17/86 743078 Soil Location 3 uranium 0.46 ppm 08/14/86 805115 Soil Location 3 uranium 3.88 ppm 12/04/86 764835 Soil Location 3 , uranium 0.30 ppm 01/15/87 794907 Soil Location 3 uranium 0.70 ppm 04/09/87 788753 Soil Location 3 uranium 0.33 ppm 07/16/87 830905 ' Soil Location 3 uranium 0.22 ppm Q 10/13/87 791307 ' Soil Location 3 uranium 0.14 ppm u, '02/10/88 858724 Soil Location 3 uranium 0.07 ppm 4( 04/26/88 852126 Soil: Location 3-uranium. 0.15 ppm a 07/19/88 833005 Soil Location 3 -uranium? -0.32 ppm 10/20/88 842824 Soil' Location-3 uranium 0.69. ppm

~- p P ge-3 of 13 GE-WIIMINGTON l SOIL SAMPLES : URANIUM. VALUES A ? (DATA:FOR TABLE 5-32) $f 9-. Sample Sample g Date Number Location Analvte Result Units Comments E' 01/24/89 :833166 Soil Location'3 uranium 0.43 ppm 4-04/18/89 704836 Soil Location 3 uranium 1.16 ppm E 07/26/89 713356 Soil-Location 3 uranium 0.16 ppm O 10/05/89 713633 Soil Location 3 uranium 0.46 ppm 2 01/11/83 '337441 Soil Location 4 . uranium ~0.54 ppm 5 04/07/83 464959 Soil Location 4 , uranium 0.19 ppm 1. 07/21/83 495181 Soil Location 4 uranium' O.43 ppm 4 10/13/83 498505 Soil Location 4 uranium 0.20- ppm E ~ 01/25/84 548552 Soil Location 4 uranium 0.35 ppm g-04/24/84 564971 Soil Location 4 uranium 0.38 ppm y 07/17/84 593884 Soil Location 4 uranium 0.24 ppm 10/18/84 602778 Soil Location 4 uranium 0.42 ppm E 02/19/85 651705 Soil Location 4 uranium 0.28 ppm 04/18/85 666138 Soil Location 4 uranium 0.38 ppm ' i 07/27/85 687205 Soil Location 4 ' uranium -0.28 ppm i 10/03/85 706008 Soil Location 4 uranium <0.03 ppm 1 01/23/86 727874 Soil Location 4 uranium 0.13 ppm t 04/17/86 743081 Soil Location 4 uranium 0.19 ppm 3 08/14/86 805117 Soil Location 4 uranium 0.28 ppm ( 12/04/86 764836 Soil Location 4 uranium 0.26 ppm R 01/15/87 794909 Soil Location 4 uranium 0.19 ppm E. 04/09/87 788754 Soil Location 4 uranium 0.21 ppm g-l 07/16/87 830907 Soil Location 4-uranium 0.18 ppm N l 10/13/87 791309 Soil Location 4 uranium 0.22 ppm 2 02/10/88 858726 Soil Location 4 uranium 0.16 ppm D 9 04/26/88 852128 Soil Location 4 uranium 0.26 ppm 07/19/88 833007 Soil Location 4 uranium 0.28 ppm 10/20/88 842825 Soil Location 4' uranium 0.26 ppm 01/24/89 833167 Soil Location 4 uranium 0.14 ppm 04/18/89 704837 Soil-Location 4 uranium 0.31 ppm l 07/26/89 713358 Soil Location 4 uranium 0.07 ppm 10/05/89 713635 Soil Location 4 uranium 0.17 ppm l 01/11/83 337442 Soil Location.5 uranium 0.54 ppm 04/07/83 464960 Soil Location 5 uranium 0.09 ppm } 07/21/83 495183 Soil Location 5 uranium 0.26 ppm 10/13/83 498506 Soil Location 5 uranium 0.18 ppm A l 01/25/84 548554 Soil Location 5 uranium 0.13 ppm d( 04/24/84 564968 Soil Location 5 uranium 0.19 ppm a* 07/17/84 593880 Soil Location 5. uranium 0.28 ppm 10/18/84 602770 Soil Location 5 uranium 0.45 ppm i -re.:r

' Paga 4.of 13 'GE-WIIMINGTON SOIL SAMPLES URANIUM VALUES i. (DATA'FOR TABLE 5-32) g- - g.. Sample Sample -g-Date Number Location' Analvte' Result Units Comments E 02/19/85 651707 Soil Location.5 uranium 0.22 ppm ~. 04/18/85 666148 Soil Location 5 uranium 0.41 ppm 07/27/85 687208 Soil Location 5 uranium 0.34 ppm o 10/03/85 706009 Soil Location 5 uranium 0.31 ppm 2 01/23/86 727875 Soil Location 5 uranium 0.16 ppm ~Q 04/17/86 743083 Soil Location 5 uranium 0.28 ppm

{

08/14/86 805119 Soil Location 5 uranium 0.22 ppm 12/04/86 764837 Soil Location 5 uranium 0.48 ppm E 01/15/87 794911 Soil Location 5 uranium 0.40 ppm ~. ~ 04/09/87 788755 Soil Location 5 uranium 0.11 ppm 3 07/16/87 830909 Soil Location 5 uranium 0.13 ppm 4 10/13/87 791311 Soil Location 5 uranium 0.14 ppm E 02/10/88 858728 Soil Location 5 uranium 0.07 ppm R 04/26/88 852130 Soil Location 5 uranium 0.06 ppm {, 07/19/88 833009 Soil Location 5 uranium 0.20 ppm y 10/20/88 842819 Soil Location 5 uranium 0.27 ppm 1 01/24/89 833168 Soil Location 5 uranium 1.60 ppm = 03/24/89 704731 Soil Location 5 uranium 0.22 ppm 3 04/18/89 704838 Soil Location 5 uranium 0.43 ppm ~. 07/26/89 713360 Soil Location 5 uranium 0.19 ppm E 10/05/89 713637 Soil Location 5 uranium 0.11 ppm 2. 01/11/83 332832 Soil Location 6 uranium 0.43 ppm o 04/07/83 464961 Soil Location 6 uranium 0.30 ppm Sb 07/21/83 495182 Soil Location 6 uranium 0.12 ppm 10/13/83 498507 Soil Location 6 uranium 0.15 ppm D 01/25/84 548555 Soil Location 6 uranium 0.16 ppm 04/24/84 564972 Soil. Location 6 uranium 0.09 ppm 07/17/84 593891 Soil Location 6 uranium 0.28 ppm 10/18/84 602777 Soil Location 6 uranium 0.29 ppm 02/19/85 651706 Soil Location 6 uranium 0.32 -ppm 04/18/85 666145 Soil Location 6' uranium 0.32 ppe 07/27/85 687207 Soil Location 6 uranium 0.22 ppm 10/03/85 706010 Soil Location 6 uranium <0.03 ppm 01/23/86 727876 Soil Location 6 uranium 0.16 ppm y 04/17/86 743082 Soil Location 6 uranium 0.19 ppm y 08/14/86 805118 Soil Location 6 uranium 0.13 ppm v, 12/04/86 764838 Soil Location 6 uranium 0.28 ppm 4 01/15/87 794910 Soil Location 6 uranium 0.34 ppm a 04/09/87 788756 Soil Location 6 uranium 0.06 ppm 07/16/87 830908 Soil Location 6 uranium 0.04 ppm e =

Paga 5 of 13 GE-WILMINGTON SOIL _ SAMPLES URANIUM VALUES x (DATA FOR TABLE 5-32) gi, . B-Sample Sample y Date Number Location Analvte Result Units Comments E '10/13/87 791310 Soil Location 6 uranium 0.10 ppm ~ 02/10/88 858727 Soil Location 6 uranium 0.08 ppm B '04/26/88 852129 Soil Location 6 uranium-0.08 ppm o 07/19/88 833008 Soil Location 6 . uranium 0.22 ppm 10/20/88 842820 Soil Location.6 uranium 0.03 ppm-5- 01/24/89 833169 Soil Location 6 uranium 0.12 ppm E 04/18/89 704839 Soil Location 6 . uranium 0.45 ppm 5 04/27/89 704769. Soil Location 6 uranium 0.71 ppm SPLIT SAMPLE RESULT E 07/26/89 713359 Soil Location 6 uranium 0.03 ppm ~.z 10/05/89 713636 Soil Location 6 uranium 0.08 ppm _g 10/26/89 713678 Soil Location 6 uranium 1.47 ppm SPLIT SAMPLE RESULT 11/28/89 715509 Soil Location 6 uranium-0.03 ppm E 01/11/83 332833 Soil Location 7 uranium 0.30 ppm 3: 04/07/83 464962 Soil Location 7 uranium 0.37 ppm ( 07/21/83 495184 Soil Location 7 uranium 0.19 ppm 4-10/13/83 498508 Soil Location 7 uranium .0.70 ppm 3. 01/25/84 548556 Soil Location 7 uranium. 0.16 ppm = 04/24/84 564969 Soil Location 7 uranium 0.38 ppm 3 07/17/84 593879 Soil Location 7 uranium 0.12 ppm ~ g 10/18/84 602782 Soil Location 7 uranium 0.16 ppm -E 02/19/85 651708 Soil Location 7 uranium 0.22 ppm E 04/18/85 666139 Soil Location 7' uranium 0.32 ppm o 07/27/85 687209 Soil Location 7 uranium 0.34 ppm EE 10/03/85 706011 Soil Location 7 uranium 1.G5 ppm 01/23/86 727877 Soil Location 7 uranium 0.13 ppm D 04/17/86 743084 Soil Location 7 uranium 0.19 ppm 08/14/86 805120 Soil Location 7 uranium 0.28 ppm

• 12/04/86 764839 Soil Location 7-uranium 0.39 ppm 01/15/87 794912 Soil Location 7 uranium 0.28 ppm 04/09/87 788757 Soil Location 7 uranium 0.20 ppm 07/16/87 830910 Soil Location 7 uranium 0.41 ppm 10/13/87 791312 Soil Location'7 uranium 0.20 ppm 02/10/88 858729 Soil Location 7 uranium 0.14 ppm 04/26/88 852131 Soil Location 7 uranium 0.24 ppm

} 07/19/88 833010 Soil Location 7 uranium 0.21 ppm q 10/20/88 842821 Soil Location 7 uranium .O.29 ppm a 01/24/89 833170 Soil Location 7 uranium 0.24 ppm 4 04/18/89 704840 Soil Location 7 uranium 0.64 ppm a 04/27/89 704770 Soil Location 7 uranium 0.10 ppu SPLIT SAMPLE RESULT 07/26/89 713361 Soil Location 7 uranium 0.11 ppm - - - - - - - - - - - = - - = - -

{ _' ~ -w a. s '.Page 6 of 13 . GE-WIIMINGTON SOIL SAMPLES URANIUM VALUES. g (DATA FOR TABLE 5-32) j{ S-L ' Sample Sample; 3 Date Number Location Analvte Result Units Comments j$ 10/05/89 713638 Soil. Location 7 uranium 0.16 ppm 10/26/89 713677 Soil Location 7-uranium 0.44 ppm -SPLIT SAMPLE RESULT g 01/11/83 332834' Soil' Location 8 uranium 0.79 ppm o 04/07/83 464963 Soil Location 8 uranium 0.16. ppm (( 07/21/83 495185 Soil. Location 8 uranium ~ 0.40 ppm Q 10/13/83 498509 Soil Location 8 uranium 0.40 ppm [ 01/25/84 548557 Soil Location 8 ' uranium 0.47 ppm

4 04/24/84 '564975 Soil ~ Location 8 uranium 0.47 ppm E

07/17/84 593877 Soil Location 8 uranium 0.08 ppm 10/18/84 602772 Soil Location S uranium 0.32 ppm 3 02/19/85 651709 Soil Location 8 uranium 0.16 ppm 4 04/18/85 666152 Soil Location 8 uranium 0.32 ppm E 07/27/85 687210 Soil Location 8 . uranium 0.92 ppm RL 10/03/85 706012 Soil Location 8 uranium 0.64 ppm 01/23/86 727878 Soil Location 8 uranium 0.16 ' ppm 04/17/86 743085 Soil Location 8 uranium 0.49 ppm 1 08/14/86 805121 Soil Location 8 uranium 0.22 ppm = 12/04/86 764840 Soil Location 8 uranium 0.32 ppm ,R 01/15/87 794913 Soil Location 8 uranium 0.79 ppm 04/09/87 788758 Soil Location 8 uranium 0.55 ppm 07/16/87 830911 Soil-Location 8 uranium 0.19 ppm E. 10/13/87 791313 Soil Location 8 uranium 0.37 ppm o 02/10/88 858730 Soil Location 8 ' uranium 0.58 ppm 04/26/88 852132 Soil Location 8 uranium 0.49 ppm 2 07/19/88 833011 Soil Location 8 uranium 0.45 ppm D 10/20/88 842826 Soil Location 8 uranium 0.29 ppm 01/24/89 833171 Soil Location 8 uranium-0.19 ppm 04/18/89 704841 Soil Location 8 uranium 0.55 ppm 07/26/89 713362 Soil Location 8 uranium 0.49 ppm 10/05/89 713639 Soil Location 8 -uranium 0.31 ppm 01/11/83 332835 Soil Location 11 uranium 0.89 ppm 04/07/83 464964 Soil Location 11 uranium 0.16 ppm 07/21/83 495192 Soil Location 11 uranium 0.19 ppm 10/13/83 498510 Soil Location 11 uranium 0.35 ppm y 01/25/84 548558 Soil. Location 11.' uranium 0.16 ppm q 04/24/84 564981 Soil Location 11 uranium 0.03 ppm y 07/17/84 593885 Soil Location 11 uranium 0.36 ppm g( ' 10/18/84 602774 Soil Location 11 uranium 0.25 ppm o 02/19/85 651716 Soil. Location 11 uranium 0.25 ' ppm ? 04/18/85 666142 Soil Location 11. uranium 0.09 ppm

p PagS 7 of.13 GE-WILMINGTONESOIL SAMPLES' URANIUM VALUES 1 .(DATA FOR. TABLE 5-32) ji 2 Sample Sample 3 Date ' Number Location Analvte Result Units Comments S_ '07/27/85 687206 Soil Location.11. uranium 0.40 ppm 10/03/85 706013 Soil-Location 11 uranium 0.28'. ppm -g, 01/23/86 727879 SoilfLocation.'ll -uranium ~ E<0.10 ppm an. 04/17/86 743080 Soil Location 11 uranium 0.31 ppm $[ 08/14/86 805128 Soil ~ Location 11. uranium 0.28 ppm

Ql 12/04/86 764841 Soil Location 11 uranium 0.30 ppm 3,

01/15/87 794920 Soil Location 11 uranium. 0.34 ppm 4 04/09/87 788759 Soil Location 11 uranium 0.38 ppm y 07/16/87 830918 Soil' Location 11 uranium 0.22 ppm Z, 10/13/87 791320 Soil Location 11 ~ uranium 0.30 ppm O2/10/88 858737 Soil Location 11 uranium 0.19-ppm 4 04/26/88 852139-Soil Location 11 uranium 0.33 ppm E 07/19/88 833018 Soil Location 11 uranium 0.45 ppm R 10/20/88 842827 Soil Location 11 uranium 0.25 ppm 01/24/89 833172 Soil Location 11 uranium 0.23 ppm 04/18/89 704842 Soil Location 11 uranium 0.87 ppm E 04/27/89 704900 Soil Location 11 uranium 0.29 ppm SPLIT SAMPLE RESULT g 05/31/89 710176 Soil Location 11 uranium 0.25 ppm R 07/26/89 713369 Soil Location 11 uranium 0.10 ppm [ 10/05/89 713646 Soil Location 11 ' uranium 0.21 ppm a 10/26/89 713679 Soil. Location 11 uranium 0.19 ppm SPLIT SAMPLE RESULT E 01/11/83 332836 Soil Location 12. uranium 1.26 ppm o 04/07/83 464965 ' Soil Location 12 uranium 0.30 ppm 07/21/83 495186 Soil Location 12 uranium 0.12 ppm t 10/13/83 498511 Soil Location 12 uranium 0.30 ppm D 01/25/84 548559-Soil Location 12 uranium 0.06 ppm 04/24/84 564973 Soil Location 12 uranium 0.58 ppm 07/17/84 593892 Soil Location'12. uranium 0.20 ppm 10/18/84 602771 Soil Location 12 uranium 0.19 ppm 02/19/85 651710 Soil Location 12 uranium 0.13 ppm 04/18/85 666144 Soil Location 12 uranium 0.54 ppm 07/27/85 687211 Soil Location 12 uranium 1.94 ppm 10/03/85 706014 Soil Location.12 uranium 0.66 ppm 01/23/86 727880 Soil Location'12 uranium 1.24 ppm y 04/17/86 743086 Soil Location 12 "ranium 0.58. ppm q 08/14/86 805122 Soil Location 12~ uranium 0.25 ppm 12/04/86 764842 Soil Location 12 uranium 0.22 ppm e 01/15/87 794914 Soil Location-12 uranium. 0.37 ppm ) 04/C9/87 788760 Soil Location 12 uranium 0.65 ppm i 07/16/87 830912 Soil Location.12 uranium 0.26 ppm-

Paga?8 of CE-WILMINGTON SOIL SAMPLES URANIUM' VALUES: -.x '(DATA FOR TABLE 5-32) 3 Sample -Sample . Analvte Result Units Comments E' j-Date" Number Location '10/13/87 791314 Soil Location 12 uranium 0.40 ppm ~. 02/10/88 858731 Soil' Location 12 uranium 0.50 ppm E 04/26/88 852133 Soil Location 12 uranium 0.50' ppm O 07/19/88 833012 Soil Location 12 uranium 0.82 ' ppm -2. 10/20/88 842828 Soil Location 12 uranium-0.48 ppm 01/24/89 833173 Soil Location 12 uranium 0.41' ppm 1 04/18/89 704843 Soil Location 12 uranium 0.91 ppm 4 05/31/89 710177-Soil Location 12 uranium 0.37 ppm j 07/26/89 713363 Soil Location 12 uranium 0.37 ppm z. 10/05/89 713640 Soil Location 12 uranium 0.38 ppm g 01/11/83 332837 Soil Location-13 Euranium 0.53 ppm 04/07/83 464966 Soil Location 13-uranium 0.47 ppm E 07/21/83 495187. Soil Location 13 uranium 0.26 ppm y 10/13/83 498512 -Soil Location 13 uranium 0.38 ppm L. 01/25/84 548560 Soil Location 13 uranium 0.32 ppm 04/24/84 564980 Soil Location 13 uranium 0.74 ppm 1 07/17/84 593886 Soil Location 13 uranium 0.40 ppm t' 10/18/84 602781 Soil Location 13 uranium 0.28 ppm 3 02/19/85 651711 Soil Location 13 uranium 0.12 ppm [f 04/18/85 666143 Soil Location 13 uranium 0.22 ppm E: 07/27/85 687212 Soil Location 13 ' uranium 0.37 ppm E 10/03/85 706015 Soil Location 13 uranium 0.31 ppm g 01/23/86 727881' -Soil Location 13 uranium 0.67 ppm N 04/17/86 743087 Soil Location 13 uranium 0.25 ppm 2 08/14/86 805123 Soil Location 13 uranium 0.61. ppm D 12/04/86 764843 Soil Location 13 uranium' O.17 ppm P 01/15/87 794915 Soil Location 13 uranium 0.13 ppm 04/09/87 788761 Soil Location 13 uranium 0.16 ppm 07/16/87 830913 Soil Location 13 uranium 0.10 ppm 10/13/87 791315 Soil Location 13 uranium 0.10 ppm 02/10/88 858732 Soil Location 13 uranium 0.12 ppm 04/26/88 852134 Soil Location.13 uranium 0.22 ppm 07/19/88 833013 Soil Location 13 uranium 0.42 ppm 10/20/88 860101 Soil Location 13 uranium 0.29 ppm 01/24/89 833174 Soil Location 13 uranium 0.11 ppm 04/18/89 704844 Soil Location 13 uranium 0.51 ppm ,o 07/26/89 713364 Soil Location 13 uranium 0.27 ppm Q 10/05/89 713641 Soil Location 13 uranium 0.52 ppm a 01/11/83 332838 Soil Location 15 uranium 0154 ppm "~ 04/07/83 464967 Soil Location 15 uranium 0.12 ppm

g . g a

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GE-WILMINGTON. SOIL

SAMPLES URANIUM VALUES-O (DATA FOR TABLE 5-32)^

~ us'

g.c Sample!

Sample J Date Number: Location' Analvte Result Units Comments il 07/21/83 495191 Soil Location 15 uranium 0.33 ppm ~ 10/13/83 498513 Soil Location 15 uranium 0.63 ppm B 01/25/84 548561 Soil Location 15.luranium 0.51 ppm -Q 04/24/84 564970 -Soil Location 15 uranium 0.16-ppm 2 07/17/84 593890 Soil Location 15 uranium 0.40 ppm 3 10/18/84 602775 Soil Location 15 uranium 0.28 ppm 1 02/19/85 651715 Soil Location 15 uranium 1.24 ppm 5 ~ 04/18/85 666149 Soil Location 15 uranium 0.45 ppm E 07/27/85 687216 Soil Location 15L uranium 0.22 ppm {. 10/03/85 706016 Soil Location 15 uranium 0.43 ppm g. 01/23/86 727882 Soil Location 15 uranium 0.13 ppm 04/17/86 743091 Soil Location 15 uranium 0.28 ppm E 08/14/86 805127 Soil Location 15 uranium 1.21 ppm 3: 12/04/86 764844 Soil Location,15 ' uranium 0.44 ppm ( 01/15/87 794919 Soil Location 15 uranium 0.19 ppm R 04/09/87 788762 Soil Location 15 uranium 0.45 ppm 1 07/16/87 830917 Soil Location 15 uranium 0.36 ppm m 10/13/87 791319 Soil Location 15 uranium 0.27 ppm 13 02/10/88 858736 Soil Location 15 uranium 0.32 ppm { 04/26/88 852138 Soil Location 15 uranium 0.34 ppm E 07/19/88 833017 Soil Location 15 - uranium 0.45 ppm E. 10/20/88 860102 Soil Location 15 ' uranium 0.72 ppm g 01/24/89 833175 Soil Location 15 uranium 0.15 ppm N 04/18/89 704845 Soil Location 15 uranium 0.98 ppm .y 07/26/89 713368 Soil Location 15. uranium 0.14 ppm 6 10/05/89 713645 Soil Location 15 uranium 0.36 ppm P 01/11/83 332839~ Soil Location 16. uranium 0.47 ppm 04/07/83 464968 Soil Location 36 uranium 0.30 ppm 07/21/83 495188 Soil, Location 16 - uranium 0.09 ppm 10/13/83 498514 Soil Location'16: uranium 0.23 ppm. 01/25/84 548562 Soil Location 16-uranium 0.09 ppm 04/24/84 564978 Soil-' Location 16; uranium 0.16 ppm 07/17/84.593882 Soil Location'16 uranium 0.40 ppm 10/18/84 602769 Soil Location 16 uranium .O.25 . ppm p 02/19/85 651712 Soil Location 16 uranium 0.09 ppm Q 04/18/85 666146 SoilLLocation 16. uranium 0.25~. ppm 07/27/85 687214 Soil-Location 16 uranium 0.40 ppm 7 10/03/85 706017 Soil Location 16' uranium 0.79 ppm 's 01/23/86 727883 Soil Location 16 - uranium 0.13. ppm 04/17/86 743088 Soil Location 16 uranium 0.25 ppm l l

Page 10 of.13 GE-WILMINGTON SOIL SAMPLES URANIUM. VALUES .x. (DATA FOR TABLE 5-32) jf. .g Sample Sample Eg-Date Number Location Analvte Result' Units Comments E 08/14/86 805124 Soil Location 16 uranium 0.25 ppm 4< 12/G4/86 764845 Soil Location 16 uranium 0.17. ppm E 01/15/87 794916 Soil' Location 16 uranium C.31 ppm ol 04/09/87 788763 Soil. Location 16 uranium ' O.21 ppm 07/16/87 830914 Soil' Location 16 uranium 0.22 ppm 51; 10/13/87 791316 Soil Location 16 uranium 0.38 ppa {; 02/10/88 '858733 Soil Location 16 ' uranium 0.20 ppm .04/26/88 852135 Soil Location 16 uranium 0.27 ppm

,E.

07/19/88. 833014 Soil' Location 16 uranium 0.29 ~ ppm z. 10/20/88 860103 Soil Location 16 uranium 0.10 -ppm- .g 01/24/89 833176 Soil Location 16 uranium-0.10 ppm 04/18/89 704846-Soil Location 16 uranium 0.33 ppm E 07/26/89 713365 Soil Location 16 uranium 0.06 ppm jy. 10/05/89 713642 Soil Location 16 uranium 0.26 ppm .( 01/11/83 332840 Soil Location 17 uranium 0.54 ppm W 04/07/83 464969 Soil Location 17 uranium 0.23 ppm E 07/21/83 495189 Soil Location 17 uranium 0.67 ppm a 10/13/83 498515 Soil Location 17 uranium 0.23 ppm 3 01/25/84 548563 Soil Location 17 uranium 0.22 ppm ( 04/24/84 564979 Soil Location 17 uranium 0.06 ppm E 07/17/84 593883 Soil Location 17 uranium 0.36 ppm E 10/18/84 602783 Soil Location 17 uranium 0.38 ppm g, 02/19/85 651713 Soil Location 17 uranium 0.38 ppm N 04/18/85 666153 Soil Location.17 uranium 0.13 ppm 2. 07/27/85 687213 Soil Location 17 uranium 0.40 ppm D 10/03/85 706018 Soil Location 17 uranium 0.37 ppm 01/23/86 727884 Soil Location 17 uranium 0.13 ppm 04/17/86 743090 Soil Location 17 uranium-0.34 ppm 08/14/86 805125 Soil Location 17 uranium 0.19 ppm 12/04/86 764846 Soil Location 17 uranium 0.48 ppm 01/15/87 794917 Soil Location 17 uranium 0.16 ppm 04/09/87 788764 Soil Location 17 uranium 1.32 ppm 07/16/87 830915 Soil Location-17 uranium 0.18 ppm 10/13/87 791317 Soil Location.17 uranium 0.46 ppm } 02/10/88 858734 Soil Location.17 uranium 0.56 ppm y 04/26/88 852136 Soil Location-17 uranium 0.38 ppm ~ 07/19/88 833015 Soil Location 17 uranium 0.40 ppm [ 10/20/88 860104 Soil Location 17 -uranium 0.28 ppm N 01/24/89 833177 Soil' Location 17 uranium 0.34 ppm 04/18/89 704847-Soil Location 17 uranium 1.64 ppm -. ~, _

n: gxa = _ ' g7 Paga 11 of 13 GE-WIMINGTON SOIL ~ SAMPLES URANIUM VALUES. x' '(DATA FOR TABLE 5-32) ~s 2.- Sample . Sample .( Date Number Location' Analvte Result Units Comments E-05/31/89 710178-Soil Location 17. uranium 0.46 ppm 07/26/89_ 713366 Soil Location 17 uranium 0.34 ppm E: 10/05/89 713643 Soil Location 17 uranium 0.71 ppm A 01/11/83 332841 Soil. Location 18 -uranium 0.32 ppm-2 04/07/83 464970 Soil Location 18 ' uranium O.12 ppm 55 07/21/83 495190 Soil Location 18-uranium 0.42 ppm 1. 10/13/83 498516 Soil Location 18 uranium 0.33 ppm 5 01/25/84 548564 ' Soil Location 18. uranium 0.06 ppm E. 04/24/84 564974 Soil Location 18 uranium 0.21 ppm k. 07/17/84 593881 Soil Location 18 uranium 0.32 ppm G 10/18/84 602776 Soil Location 18 uranium O.22 ppm 02/19/85 651714. Soil Location 18 uranium 0.25 ppm E 04/18/85 666147 Soil Location 18 uranium 0.16 ppm 07/27/85 687215 Soil Location 18 uranium 0.70 ppm (, 10/03/85 706019 Soil Location 18 uranium 0.43 ppm 01/23/86 727885 Soil Location 18 uranium O.22 ppm 3. 04/17/86 743089 Soil Location 18 uranium 0.55 ppm = 08/14/86 805126 Soil Location 18 uranium 0.19 ppm 3 12/04/86 764847 Soil Location 18 uranium 0.26 ppm [j 01/15/87 794918 Soil Location 18 uranium 0.72 ppm E 04/09/87 788765 Soil Location 18 uranium. O.48 ppm E 07/16/87 830916 Soil Location 18' uranium 0.15 ppm g 10/13/87 791318 Soil Location 18 uranium 0.19 ppm N 02/10/88 858735 Soil Location 18 uranium 0.45 ppm D 04/26/88 852137 ' Soil Location 18 uranium 0.17 ppm D 07/19/88 833016 Soil Location 18 uranium 1.02 ppm P 10/20/88 860105 Soil Location 18 Euranium 0.07 ppm 01/24/89 833178 Soil Location 18 uranium 0.27 ppm 04/18/89 704848 Soil Location'18 uranium 0.92 ppm 05/31/89 710179 Soil Location 18 uranium 0.15 ppm 07/26/89 713367 Soil Location 18 uranium O.14 ppm 10/05/89 713644 Soil Location 18 uranium 0.23 ppm 01/11/83 337437 Soil Location 1A uranium 1.55 ppm 04/07/83 464956 Soil Location 1A uranium. 0.37 ppm- ?. 07/21/83 495178 Soil Location 1A. uranium 0.84 ppm 10/13/83 498502 Soil Location 1A uranium 0.30 ppm ~. 01/25/84 548549 Soil Location 1A uranium 0.35 ppm 7 04/24/84 564983 Soil Location 1A uranium 0.45 ppm 1** 07/17/84 593888 Soil Location 1A uranium 10.52 ppm 10/18/84 602768 Soil Location 1A uranium 2.24'. ppm ~. = - _, _ _ - c - - ~ - a. _ _ _ _ _ _ _ _ _ _ _ _ _ _ ______ -_ __ _ _ _ _ _ _ _ ___;_.__ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ = _. _ _ _. =

~ g*f Paga'12 of..13 GE-WILMINGTON SOIL SAMPLES URANIUM: VALUES p .(DATA ~FOR-TABLE 5-32) g Sample Sample g Date Number ~ Location Analvte Result Units Comments 'E-02/19/85 651701 Soil Location IA uranium 4.64 ppm 04/18/85 '666141' Soil Location 1A uranium 1.37 ppm E 07/27/85 687201. Soil Location 1A uranium 2.70 ppm er 10/03/85 706004 Soil-Location 1A uranium <0.03 ' ppm 2. 01/23/86 727888 SoilfLocation 1A uranium 15.33 ppm 3 04/17/86 743094 Soil Location 1A uranium 1.90 ppm E-08/14/86 805113 Soil Location 1A uranium 10.93 ppm 4 12/04/86 764850 Soil Location'1A uranium 4.54 ppm E 01/15/87 794905. Soil Location 1A uranium 4.44 ppm {. 04/09/87 788768 _ Soil Location 1A uranium 1.12 ppm G 07/16/87 830903. Soil Location 1A uranium 2.47 ppm 10/13/87 791305 Soil Location 1A uranium 1.62 ppm E 02/10/88 858722 Soil Location 1A uranium 4.96 ppm y-04/26/88 852124 Soil Location 1A uranium 4.79 ppm ( 07/19/88 833003 Soil. Location 1A uranium 18.30 ppm R: 08/17/88 854244 Soil Location 1A uranium 1.66 ppm i 10/20/88 860108 Soil Location 1A uranium 15.87 ppm q.: 11/10/88 834922 Soil Location 1A uranium 5.34 ppm 3. 12/08/88 833126 Soil Location IA uranium-4.72 ppm { 01/24/89 833181 Soil Location 1A uranium 14.75 ppm E 04/18/89 704851 Soil Location 1A uranium 39.10 ppm E 07/26/89 713354 Soil Location 1A uranium. 16.60 ppm g 10/05/89 713631 Soil Location 1A uranium 23.50 ppm N 05/24/85 673539 Soil Location 20 uranium 19.70 ppm 2 l'2/02/85 718963 Soil Location 20 uranium 0.29 ppm ~ D 01/23/86 727886 Soil Location 20 uranium 7.58 ppm R 04/17/86 743092 Soil Location 20. uranium 20.40 ppm 08/14/86 805111 Soil Location 20. uranium 139.00 ppm 12/04/86 764848 Soil Location 20 uranium 32.40 ppm 01/15/87 794903 Soil Location 20 uranium 157.00 ppm 04/09/87 788766 Soil Location 20 uranium 123.99 ppm 07/16/87 830901 Soil Location 20 uranium 5.97 ppm 10/13/87 791303 Soil Location 20 ' uranium 8.78 ppm 02/10/88 858720 Soil Location 20 uranium 4.47 ppm y 04/26/88 852122 Soil Location 20 uranium 4.57 ppm Q 07/19/88 833001 Soil Location 20 uranium 15.30 ppm 10/20/88 860106 Soil Location 20 uranium 9.89 ppm. 7' 11/10/88 834923 Soil Location 20 uranium 9.89 ppm 's-12/08/88 833127 Soil Location 20 uranium 13.38 ppm 01/24/89 833179 Soil Location 20 uranium 5.51-ppm

Paga 13.of 13 GE-WILMINGTON: SOIL' SAMPLES.. URANIUM VALUES. fg (DATA'FOR TABLE 5-32)- g .3 . Sample . Sample-3- Date Number Location 'Analvte Result Units Comments 04/18/89 704849 Soil Location 20 uranium 24.38 ppm 07/26/89 713352 Soil Location 20 uranium 13.30 ppm 'ty 10/05/89 713629 Soil Location 20 uranium 4.12 09/20/85 705725 ' Soil Location 21 ~ uranium 8.54 ~ ppm o ppm 2 12/02/85 718982 LSoil Location 21'Juranium 0.92 ppm 01/23/86 727887 Soil Location 21 uranium 13.57 ppm 3 04/17/86 743093 ' Soil Location 21. uranium .47.40. ppm 4 08/14/86. 805112 Soil Location.21 uranium' 12.43 ppm E 12/04/86 764849 ' Soil Location 21-uranium 27.10 ppm ~c ~ 01/15/37 794904 " Soil Location 21' uranium 33.80_-ppm 3/ 04/09/87 788767 Soil Location 21 uranium' 8.61 ppm 4' 07/16/87 830902 Soil Location 21 uranium-0.47' ppm' is 10/13/87 791304 Soil Location 21 ~ uranium-3.48 ppm . g; 02/10/88 858721 Soil Location 21 uranium 4.46 ppm 04/26/88 852123 Soil Location 21 uranium 3,96 ppm 07/19/88 833002 Soil Location 21-uranium 7.50 ppm i 10/20/88 860107 Soil Location 21. uranium 4.57 ppm a 11/10/88 834924 Soil Location 21 uranium 27.15 ppm R 12/08/88 833128 Soil Location 21 -uranium 15.56 ppm { ~ 01/24/89 833180 Soil Location 21 uranium 11.69 ppm E 04/18/89 704850 Soil Location 21 ; uranium 16.80 ppm Q 07/26/89 713353 Soil Location 21 uranium 14.70 ppm e 10/05/89 713630 Soil Location 21 uranium 6.13 ppm Mi 9 N . 4. = . =

_m s y Page"l'.of 1~ GE-WILMINGTON EFFLUENT CHANNEL SEbIMENT URANIUM VALUES ~ xh 7(DATA FOR TABLE:5-33)'

g; ~ -

. 3-. : . Sample Sample'

{'

Date N u m b e r 1-Location-Analvte Result-Units Comments ~R-05/27/85 673555. Ditch Soil Loc 4 uranium 9.32 ppm i 10/05/85 706001 Ditch Soil Loc 4 - uranium 5.53 ppm E 01/23/86 727868 Ditch Soil Ilx: 4-uranium 1.81 ppm O. 12/04/86 764851 Ditch Soil Loc _4' uranium-7.29 ppm 2L 04/09/87 ~ 788748 ' Ditch soil Loc 4 uranium 8.72 ppm '2~ 11/15/87-791325 Ditch Soil Loc 4 uranium -0.92 ppm 'j[ 11/25/87 865024 Ditch Soil Loc 4 uranium 1.14 ppm 4-04/26/88 852140 Ditch Soil Loc 4 uranium. 10.23 ppm E-11/10/88 834931 ' Ditch Soil Loc 4 uranium 41.19 ppm _1 04/18/89 704855-Ditch Soil Loc 4 uranium 4.32 ppm 3 12/15/89 715225 Ditch Soil Loc 4 uranium 0.75 ppm E 05/27/85 673556 Ditch Soil Loc 5 uranium . :2. 8 8 ' ppm .E 10/05/85 706002 Ditch Soil Loc 5 uranium 1.17 ppm y. 01/23/86 727869 Ditch Soil Loc 5-uranium 13.50 ppm i 12/04/86 764852 Ditch Soil Loc 5 uranium 1.18-ppm 04/09/87 788749 Ditch Soil Loc 5 uranium 1.95 ppm 3. 11/15/87 791326 Ditch Soil Loc 5 uranium 3.68 ppm = 11/25/87 865025 Ditch Soil Loc 5 uranium 4.87 ppm 3 04/26/88 852141 Ditch soil Loc 5 uranium 1.86 ppm ( 11/10/88 834932 Ditch Soil Loc 5 uranium 4.72 ppm R. 04/18/89 704856 Ditch Soil Loc 5 uranium 3.57 ppm EL 12/15/89 715226 Ditch Soil Loc 5 uranium 1.09 ppm g 05/27/85 673557 Ditch Soil Loc 6 uranium. 4.03 ppm N 10/05/85 706003 Ditch Soil Loc 6: uranium 1.67 ppm 01/23/86 727870 Ditch' Soil Loc 6 uranium 2.58 ppm ls 12/04/86 764853 Ditch Soil Loc 6 uranium 1.82 ppm 04/09/87 788750 Ditch Soil Loc 6 uranium 1.96 ppm 11/15/87 791327 Ditch Soil Loc 6 ' uranium 10.90 ppm 11/25/87 865026 Ditch Soil Loc 6 uranium 10.95 ppm 04/26/88 852142 Ditch Soil Loc 6-uranium 1.96 ppm. 11/10/88 834939 Ditch Soil Loc 6 uranium 1.37 ppm 04/18/89 704857 Ditch Soil Loc 6 uranium 20.70 ppm 12/15/89 715227 Ditch Soil Loc 6 uranium 0.98 ppm W C: R

Paga'1 of'4 GE-WIIMINGTON. PROCESS LAGOON WELLS URANIUM VALUES-x. (DATA FOR TABLE 5-20) ~g 2- . Sample Sample { Date ' Number Location Analvte Result Units Comments E O2/05/83 346809 Well PL-1 uranium 0.02. ppm 04/27/83 465018 Well~PL-1~ uranium 0.02 ppm E O2/13/84 541517 Well PL uranium <0.02 ppm O 05/24/84 578941 Well PL-1 uranium <0.02 ppm 2 10/06/84 602885 Well PL-1 uranium <0.02 ppm 2; 11/12/84 626478 Well PL-1 uranium

<0.02 ppm E,

02/18/85 633485' Well PL-1 uranium ~<0.02 ppm 04/29/85 666513 Well'PL-1 uranium ~ <0.02 ppm E 07/29/85 687228 Well PL-1 uranium: <0.02 ppm 1~ f 10/28/85 709213 Well PL-1 uranium <0.02 ppm 01/27/86 727813 Well PL-1 uranium <0.02 ppm 04/28/86 739903 Well PL-1 uranium <0.02 ppm E' 07/28/86 805211 Well PL-1 uranium <0.02 ppm y: 10/27/86 764803 Well PL-1 uranium <0.02 ppm ( 01/26/87 794782 Well PL-1 uranium <0.02 ppm 04/13/87 816296 Well PL-1 . uranium <0.02 ppm 3. 08/03/87 817324 Well PL-1 uranium <0.02 ppm = 10/26/87 818147 Well PL-1 uranium WELL DRY 01/04/88 818676 Well PL-1 uranium 0.03 ppm ( 03/28/88 819688 Well PL-1 uranium <0.02 ppm E 08/01/88 820864 Well PL-1 uranium <0.02 ppm E 10/19/88 821758 Well PL-1 uranium <0.02 ppm g 01/09/89 822509 Well PL-1 uranium <0.02 ppm N 04/24/89 321477 Well PL-1 uraniun <0.02 ppm. U 08/08/89 335079 Well PL-1 uranium <0.02 ppm D 11/20/89 350473 Well PL-1 uranium <0.02 ppm P-02/05/83 346812 Well PL-3 uranium WELL DRY 02/13/84 541520 Well PL-3 uranium <0.02 ppm 10/06/84 602876 Well PL uranium <0.02 ppm 11/12/84 626493 Well PL-3 uranium WELL DRY 02/18/85 633486 Well PL-3 uranium <0.02 ppm 04/29/85 666519 Well PL-3 uranium <0.02 ppm 07/29/85 687233 Well'PL-3 uranium <0.02 ppm 10/28/85 709218 Well PL-3 Uranium <0.03 ppm ) 01/27/86 727818 Well PL-3. uranium <0.02 ppm 4 04/28/86 739908 Well PL-3 uranium <0.02 ppm 07/28/86 805214 Well PL-3 uranium . <0.02 ppm [ 10/27/86 764806 Well PL-3 uranium <0.02-ppm 's 01/26/87 794786 Well PL-3 uranium <0.02 ppm 04/13/87 816301. Well PL-3 uranium WELL DRY ~ ~ 'L , a = _, _ - -w... _,

. P go 2 of 4 GE-WIIMINGTON PROCESS LAGOON WELLS URANIUM VALUES x -- (DATA FOR TABLE 5-20) .gg Sample- ' Sample-g Date Number Location Analvte Result Units Comments E 08/03/87 817329 Well PL-3 uranium WELL DRY 10/26/87 818152 Well PL-3 uranium WELL DRY E 01/04/88 '818681 Well PL uranium. <0.02 ppm O-03/28/88 819693 -Well PL-3 uranium <0.02 ' ppm 2 08/01/88 820869 Well PL-3 uranium <0.02 ppm 55-10/19/88 821763 Well PL-3 uranium <0.02' ppm 5[ 01/09/89 822514 Well PL-3 uranium <0.02 ppm 4 03/30/89 704824 Well PL-3 uranium <0.02 ppm SPLIT SAMPLE RESULT E 04/24/89 321480 Well PL-3 uranium <0.02 ppm {. 04/27/89 704892 Well PL-3 uranium <0.02 ppm SPLIT SAMPLE RESULT g 08/08/89 335082 Well PL-3 . uranium <0.02 ppm 11/20/89 350476 Well PL-3. uranium <0.02 ppm EJ 02/05/83 346813 Well PL-5 uranium 0.02 ppm y:- 04/27/83 465024 Well PL-5 uranium 0.02 ppm ( 02/13/84 541522 Well PL-5 uranium <0.02 ppm' 05/24/84 578937 Well PL-5 uranium <0.02 ppm l' 10/06/84. 602879 Well PL-5 uranium <0.02 ppm 11/12/84 626481 Well PL-5 uranium <0.02 ppm 02/18/85 633487 Well PL-5 uranium <0.02 ppm [ 04/29/85 666525 Well PL-5 uranium 40.02 ppm E 07/29/85 687238 Well PL-5 uranium. <0.02 ppm .EL 10/28/85 709224 Well PL-5 uranium 0.04 ~ ppm o 01/27/86 727824 Well PL-5 . uranium <0.02 ppm 04/28/86 739914 Well PL-5 uranium <0.02 ppm D 07/28/86 805221 Well PL-5 ' uranium <0.02 ppm D 10/27/86 764813 Well PL-5 uranium <0.02 ppm 01/26/87 794792 Well PL-5 uranium <0.02 ppm 04/13/87 816306 Well PL-5 uranium <0.02 ppm 08/03/87 817334 Well PL-5 uranium <0.02 ppm 10/26/87 818157 Well PL-5 uranium WELL DRY 01/04/88 818686 Well PL-5 uranium <0.02 ppm 03/28/88 819698 Well PL-5 uranium <0.02 ppm 08/01/88 820874 Well PL-5 uranium <0.02 ppm 10/19/88 821768 Well PL-5 uranium <0.02 ppm p 01/09/89 822519 Well PL-5 uranium <0.02 ppm 4 04/24/89 321486 Well PL-5 uranium <0.02 ppm ~. 08/08/89 335085 Well PL-5 uranium <0.02 ppm [ 11/20/89 350484 Well'PL-5 uranium <0.02 ppm 02/05/83 346815 Well PL-8 uranium. 0.02 ppm 04/27/83 465026 Well PL-8 uranium 0.02 ppm

Page 3 of 4 GE-WILMINGTON PROCESS LAGOON l WELLS. URANIUM VALUES! (DATALFOR TABLE-5,-20) %g l 7; ~ Sample. Sample '~ 'g:~ Date Number- ' Location Analvte Result Units Comments E. 02/13/84' 541524 Well PL-8 uranium' <0.02 ppm 05/24/84 578934 Well'PL-8 -uranium <0.02 ppm E' 10/06/84 602880 Well PL-8 uranium <0.02. ppm -Q 11/12/84 626469 Well'PL-8 uranium <0.02 ppm 12 02/18/85 633488 Well PL-8 uranium 1 <0.02 ppm 04/29/85 666527 Well PL-8 . uranium 0.02 ppm { 07/29/85 687243 Well PL-8 uranium 0.05 ppm . 4 10/28/85 709227 Well PL-8 uranium <0.03 ppm j 01/27/86 727827 Well PL-8 uranium <0.02 ppm ~. 04/28/86 739917 Well PL-8 uranium <0.02 ppm $~ 07/28/86 805224 Well PL-8 uranium 0.04 ppm E 10/27/86 764816 Well PL-8 uranium WELL DRY E. 01/26/87 794800 Well PL-8 uranium <0.02 ppm y 04/13/87 816311 Well PL-8 uranium <0.02 ppm ( 08/03/87 817339 Well PL-8 uranium <0.02 ppm T 10/26/87 818162 Well PL-8 uranium WELL DRY 3. 01/04/88 818691 Well PL-8 uranium <0.02 ppm = 03/28/88 819703 Well PL-8 uranium <0.02 ppm R 08/01/88 820879 Well PL-8 uranium <0.02 ppm ( 10/19/88 821773 Well PL-8 uranium <0.02 ppm R~ 01/09/89 822524 Well PL-8 uranium 0.07-ppm E 04/24/89 321489 Well PL-8 uranium <0.02 ppm g 05/11/89 840076 Well PL-8 uranium <0.02 ppm N 08/08/89 335088 Well PL-8 uranium <0.02 ppm . );'- 11/20/89 350487 Well PL-8 uranium <0.02 ppm 02/05/83 346818 Well PL-11 uranium 0.03 ppm 04/27/83 465020 Well PL-11 uranium 0.02 ppm 02/13/84 541526 Well PL-11 uranium <0.02 ppm 05/24/84 578931 Well PL-11 uranium <0.02 ppm 10/06/84 602883 Well PL-11 uranium <0.02 ppm 11/12/84 626483 Well PL-11 uranium <0.02 ppm 02/18/85 633489 Well PL-11 uranium <0.02 ppm 04/29/85 666536 Well PL-11 uranium .<0.02 ppm 07/29/85 687248 Well PL-11 uranium ~<0.02 ppm y-10/28/85 709232 Well.PL-11 uranium 0.05_ ppm y 01/27/86 727842. Well PL-11 ~ uranium <0.02 ppm ~. 04/28/86 739962 _Well-PL-11 uranium <0.02 ppm 7 07/28/86 805129 Well PL-11 uranium 0.05 ppm '~~ 10/27/86 764820 Well PL-11 uranium <0.02 ppm %~ 01/26/87 794796 Well PL-11 uranium <0.02 ppm i l -1 -~ L-

'Piga 4 of 4 GE-WILMINGTON PROCESS LAGOON WELLS URANIUM VALUES ., c (DATA'FOR TABLE 5-20) ' g-2.: Sample Sample 3; Date Number Location Analvte Result Units Comments i-04/13/87 816316 Well-PL-11 uraisium <0.02 ppm ~.. 08/03/87 817344' Well PL-11 uranium 0.07 ppm' is 10/26/87 818167 <Well PL-11 uranium .<0.02 ppm .o 01/04/88 818696 Well PL-11 ^ uranium- <0.02 ppm 2 03/28/88 819708 - Well PL-11 uranium .<0.02 ppm 08/01/88 820884 Well PL-11 uranium- <0.02 ppm . 4: 3j 10/19/88 821778 Well PL-11 Wranium <0.02 ppm 01/09/89 822529 Well PL-11 uranium 0.04 ppm j 04/24/89 321492 'Well PL-11 uranium <0.02 ppm

z.,.

05/11/89 840082 Well PL-11 uranium <0.02 ppm n. 08/08/89 335091 Well PL-11 uranium <0.02 ppm 4' 11/20/89 350490 -Well PL-11. uranium <0.02 ppm I .W 3 h &a 4 ShR a 4 E.

v .z ';2 9 --s - -; - = c ---- - - e - - = ~

~

~ = Page 1'of'5-GE-WILMINGTON WASTE TREATMENT-WELLS URANIUM VALUES lc (DATA FOR TABLE 5-23)_ ij ~ q g Sample Sample g Date Number-Location Analvte Result Units Comments E 01/26/83 346887 Well WT-1 uranium 0.08 ppm ~ 02/16/83 346775 Well WT-1 . uranium 0.32 ppm E' 03/09/83 458397 Well-WT-1 uranium 0.20 ppm -o 04/06/83 464901 Well WT-1 uranium 0.02 ppm 2 05/18/83 472858 Well WT-1 ' uranium 0.16 ppm Q 06/23/83 488616 Well WT-1 . uranium 0.03 ppm 07/24/83 495111 Well WT-1 uranium 0.03 ppm 4 08/20/83 498277 Well'WT-1 uranium <0.02 ppm E 09/22/83 505355 Well WT-1 uranium <0.02 ppm 2. 10/21/83 498525 Well WT-1 uranium <0.02 ppm 3 12/19/83 518499 Well WT-1 uranium NO SAMPLE - WELL DAMAGED E 01/05/84 541621 Well WT-1 uranium <0.02 ppm E 02/18/84 548583 Well WT-1 uranium 0.35 ppm R 03/24/84 564941 Well WT-1 uranium 0.10 ppm (, 04/28/84 578904 Well WT-1 uranium <0.02 ppm ? 05/24/84 580403 Well WT-1 uranium <0.02 ppm l-06/28/84 580374 Well WT-1 uranium 0.23 ppm g 07/27/84 602527 Well WT-1 uranium 0.08 ppm R 08/30/84 607709 Well WT-1 uranium 0.13 ppm [; 09/27/84 602842 Well WT-1 uranium 0.10 ppm a 10/24/84 578079 Well WT-1 uranium- <0.02 ppm (_ 11/06/84 626428 Well WT-1 uranium 0.12 ppm o 12/11/84 626570 Well WT-1 uranium' O.07 ppm 01/14/85 633383 Well WT-1 uranium <0.02 ppm 02/11/85 647867 Well WT-1 uranium 0.17 ppm );L 03/04/85 650902 Well WT-1 uranium <0.02 ppm 04/01/85 651237 Well WT-1 ! uranium 0.14 ppm 05/06/85 666231 Well WT-1 uranium- <0.02 ppm 06/03/85 675396 Well WT-1 uranium 0.09 ppm 07/01/85 682432 Well WT-1 uranium 0.07 ppm 08/05/85 688240 Well~WT-1 uranium 0.09 ppm 09/03/85 687536 Well WT-1 uranium 0.43 ppm 09/30/85 705751 Well WT-1 uranium 0.09 ppm 11/04/85 '709282 Well WT-1 uranium 0.04 ppm p' 12/02/85 709365 Well WT-1 uranium 0.05 ppm q. 12/31/85 725258 Well WT-1 uranium 0.14 ppm i 02/05/86 727973 Well WT-1 uranium 0.02 ppm El - 03/03/86 728847 Well WT-1 ' uranium 0.13 ppm 04/02/86 739252 Well WT-1 uranium <0.02 ppm 05/05/86 740053 Well WT-1 uranium 1.54 ppm l

Paga 2 of 5 GE-WIIKINGTON WASTE' TREATMENT WELLS-URANIUM, VALUES.- .(DATA FOR TABLE 5-23)- ]p . g.1 l Sample Sample g Date Number Location Analvte Result Units Comments E. 06/02/86 769802 Well WT-1 uranium' 0.20 ppm. l 06/30/86 796777 WelllWT-1 uranium 0.13 ppm isi 08/04/86 1805151 -Well WT-1 uranium. 0.16. ppm

o 09/03/86. _759024 Well WT-l' uranium

<0.02 ppm E[ 09/29/86 804510-- Well WT-1 . uranium 0.04. ppm . ii

11/03/86 791869 Well WT-1

_ uranium' 0.03 -ppm jL 12/01/86 -815532 Well WT-1 uranium <0.02 ppm 74 12/30/86 815602 Well WT-1 uranium 1 ~<0.02~ ppm 3-02/02/87 815672 Well WT-1 uranium. <0.02 . ppm ~,1 ~ 03/02/87. 815805 Well WT-1 uranium <0.02 ppm EL 4 03/30/87 816073 Well WT-1 uranium <0.02 ppm 04/29/87 816421 Well WT-1 uranium <0.02 ppm is: 05/27/87 816602 Well WT-1 uranium <0.02 ppm R-06/22/87 816882 Well WT-1 uranium <0.02 ppm { 08/03/87 817198 Well WT-1 uranium <0.02 ppm g. 08/31/87 817598 Well WT-1 uranium <0.02 ppm 1 09/28/87 817824 Well WT-1 uranium-0.02 ppm a 10/26/87 818095 Well WT-1 uranium 0.05 ppm

R

{ 11/18/87 818390 Well WT-1 uranium 0.04 ppm ~. 01/04/88 818733 Well WT-1 uranium. 0.03 ppm E 02/01/88 819085 Well WT-1 uranium 0.03 ppm E 02/29/88 819370 Well WT-1 uranium-0.03 ppm o 03/28/88 819636 Well WT-1 uranium <0.02 ppm 04/25/88 858018 Well WT-l' uranium <0.02 ppm 05/23/88 820246 Well WT-1 uranium <0.02 ppm );. 06/20/88 820463 Well WT-1 uranium <0.02 ppm 08/01/88 820788 Well WT-1 uranium <0.02 ppm 08/29/88 821119 Well WT-1 uranium <0.02 ppm 09/26/88 821390 Well WT-1 uranium . <0.02 ppm 10/19/88 821688 Well WT-1 uranium 0.03 ppm 11/14/88 822015 Well WT-1 uranium <0.02 ppm 01/09/89 822241 Well WT-1 uranium <0.02 ppm 01/25/89 834997 Well WT-1 uranium <0.02 ppm -02/06/89 822747 Well'WT-1 -uranium- <0.02 ppm p. 02/20/89 701866 Well WT-1 uranium <0.02 ppm q 03/06/89 823014 Well WT-1 uranium <0.02 ppm 03/20/89 704717 Well WT-1 uranium <0.02 ppm 4 04/03/89 318663 Well WT-1 uranium <0.02 ppm 04/19/89 704871 Well.WT-1 uranium <0.02 ppm 05/01/89 322569 Well WT-1 uranium <0.02-ppm =. - - - - - - - =

.g _ ~ w.- Paga 3'of'5 GE-WILMINGTON WASTE TREATMENT WELLS)URANIUMiVALUES~ i. (DATALFOR TABLE S-23)' jj . 9. - Sample. Sample (; Date Number Location Analvte Result Units Comments E 05/15/89l 324756 Well WT uranium'. <0.02 ppm ~ 05/30/89 '326022 'Well WT-1 uranium <0.02 ppm E; .06/12/89 713313 Well WT uranium <0.02 ' ppm o 06/26/89 329767 Well WT-1 uranium <0.02 ppm 2'~ 07/10/89. 332160 Well WT-1 uranium <0.02-ppm-2_ 07/24/89 334080 Well WT-1 uranium <0. 02. ppm -1 08/22/89 '335173 Well WT-1 uranium <0.02 ppm 41 09/11/89 336055 Well WT-1 uranium <0.02 ppm' E 09/20/89 338838 Well-WT-1 . uranium <0.02 ppm ^{ 10/02/89 340127 Well WT-1 uranium <0.02 ppm g: 10/18/89 343955 Well WT-1 uranium <0.02 ppm wi 10/20/89 714620 Well WT-1 uranium 0.02 ppm E 10/20/89 714621 -Well'WT-1 uranium 0.02 ppm g; 10/20/89 714622 Well'WT-1 uranium 0.05 ppm g: 10/20/89 714623 Well WT-1. uranium 0.06 ppm

r

. ell WT-9 uranium 0.02 ppm ' 3[ 01/26/83 346897-W 02/16/83 346772 Well WT-9 uranium 0.02 ppm 03/09/83 458390 Well WT-9 uranium 0.02 ppm 3 04/06/83 464908 Well WT-9 uranium 0.02 ppm { 05/18/83 472865 Well WT-9 uranium <0.02 ppm E. 06/23/83 488614 Well WT-9 uranium 0.02 ppm .;L 07/24/83 495113 Well WT-9 uranium <0.02 ppm g 08/20/83 498274 Well WT-9 uranium <0.02 ppm N 09/22/83 505313 Well WT-9 uranium <0.02 ppm D 10/21/83 498521 Well WT-9 uranium WELL DRY D 12/19/83 518500 Well-WT-9 uranium WELL DRY 01/05/84 541700 Well WT-9 uranins WELL DRY 02/18/84 548596 Well WT-9 uranium 0.39 ppm 03/24/84 564955 Well WT-9 uranium WELL DRY 04/28/84 578902-Well'WT-9 uranium <0.02 ppm 05/24/84 580412 Well WT-9 uranium WELL DRY 09/18/84 607689 Well WT-9 uranium <0.02 ppm 09/27/84 602841 Well WT-9 uranium <0.02 ppm 10/24/84 578076 Well WT-9 uranium <0.02 ppm y 11/06/84 626427 Well WT-9 uranium- <0.02 ppm-q 12/11/84 626572 Well WT-9 uranium <0.02 ppm 01/14/85 633376 Well WT-9 uranium <0.02 ppm 7-02/11/85 647855 Well WT-9 - uranium <0.02 ppm 's. 03/04/85 650938 Well WT-9 uranium <0.02 ppm 04/01/85 651274 Well WT-9' uranium <0.02 ppm

~.g, "}. +}l=Ei Q ~ 1-w- ~ ,y g--v; y u.-f j 4.. Page-4~of 5 GE-WILMINGTON WASTE TREATMENT WELLS-URANIUM VALUES- ~(DATA:FOR-TABLE 5-23). w-m ~ ~g. y Sample Sample Q. Date Number' Location Analvte Result Units Comments -g 05/06/85 666219 Well-WT-9 uranium <0.02 ppm. 06/03/85 673596 Well WT-9 uranium 0.07 ppm B 07/01/85 682445 Well WT-9 uranium 0.06. ppm o 08/05/85 688234 Well WT-9 uranium 0.08 ppm jE 09/30/85 705746 Well WT-9 uranium 0.02 ppm 11/04/85 709274 Well WT uranium <0.02 ppm 1 12/02/85 709377 Well WT-9 uranium <0.02 ppm 4 12/31/85 725252' Well WT uranium WELL DRY .E 03/03/86 733417 Well WT-9 uranium WELL DRY 2. 05/05/86 740048 Well WT-9 uranium WELL DRY 06/02/86 769860 Well WT-9 uranium WELL DRY 4' 06/30/86 796701 Well WT-9 uranium WELL DRY E 08/04/86 805287 Well WT-9 uranium SAMPLE LOST y 09/03/86 759037 Well WT-9 uranium WELL DRY 09/29/86 804549 Well WT-9 uranium WELL DRY R 11/03/86 791809 Well WT-9 uranium WELL DRY E 12/01/86 815567 Well WT-9 uranium WELL DRY g 12/30/86 815637 Well WT-9 uranium WELL DRY y 01/26/87 794743 Well WT-9 uranium <0.02 ppm ~ g 02/02/87 815707 Well WT-9 uranium <0.02 ppm E 03/02/87 815840 Well WT-9 uranium <0.02 ppm E,. 03/30/87 816108 Well WT-9 uranium <0.02 ppm o 04/29/87 816456 Well WT-9 uranium <0.02 ppm 05/27/87 816637 Well WT-9 uranium <0.02 ppm M' 06/22/87 816917 Well WT-9 uranium <0.02 ppm D 08/03/87 817233 Well WT-9 uranium (0.02 ppm P' 08/31/87 817633 Well WT-9 uranium <0.02 ppm 09/28/87 817859 Well WT-9 uranium 0.02 ppm 10/26/87 818130 Well WT-9 uranium 0.04 ppm 11/18/87 818425 Well WT-9 uranium 0.05 ppm 01/04/88 818768 Well WT-9 . uranium <0.02 ppm 02/01/88 819120 Well WT uranium 0.03 ppm 02/29/88 819400 Well WT-9 uranium 0.03 ppm 03/28/88 819671 Well WT-9 uranium <0.02 ppm y 04/25/88 819961 Well WT-9 . uranium <0.02 ppm q 05/23/88 820281 Well'WT-9 uranium <0.02. ppm z,, 06/20/88 820498-Well.WT-9 uranium <0.02. ppm y' 08/01/88 820823 Well WT-9 uranium <0.02 ppm 's 08/29/88 821154 Well WT-9 uranium' O.02 ~ ppm ls: 09/26/88 821425 WellLWT-9 uranium WELL DRY

Page 5 of.5 GE-WILMINGTON WASTE TREATMENT' WELLS' URANIUM' VALUES. ~ L (DATA.FOR'TABLEJ5-23) a.: Sample Sample J.- Date Number Location Analyte Result Units _ Comments E '- 10/19/88.E21723 'Well WT-9 uranium WELL DRY '11/14/88 822050 Well WT-9, ' uranium WELL DRY 'E-01/09/89 822276 Well WT-9 uranium WELL' DRY-C) 03/31/89 318728 Well WT-9 uranium WELL DRY' 2 04/19/89 704873 Well WT-9 uranium WELL DRY- _05/15/89 324761.Well~WT-9 uranium WELL DRY 05/26/89 326048 Well-WT-9 uranium WELL DRY 4.. 06/12/89 713316 Well WT-9 uranium WELL DRY [- 06/23/89 329788 Well WT-9 uranium WELL DRY ~ :: 07/10/89 332163 Well WT uranium' WELL DRY 07/21/89 334107 :Well WT-9 uranium WELL DRY D WELL DRY E 08/11/89 335194 Well WT-9 uranium 08/30/89 336076 Well WT-9 uranium WELL DRY .R 09/20/89 338841 Well WT-9 uranium WELL~ DRY '[.. 10/02/89 340148 'Well WT-9 uranium <0.02 ppm -R-10/18/89 343958 Well WT-9 uranium <0.02 ppm 7 R. 'On 4 hx s- .E .:q

Page'1 of'9 GE-WILMINGTON WASTE TREATMENT WELLS-ACTIVITY' VALUES x~ -(DATA FOR_-TABLE 5-24) Eg Sample Sample: { Date Number Location Analvte' Result Units Comments E ~ 06/23/83' 488618 Well WT-1 gross alpha 230i120 pCi/1 07/24/83 495102 Well WT-1 gross alpha 87 46 pCi/l DE 08/20/83 498275 Well WT-1 gross alpha 140173 pCi/1 .o 09/22/83 505356 Well'WT-1 gross alpha 130i69 pCi/1. 12 ' L2 10/21/83 498524 Well WT-1 gross alpha 210 110 pCi/1 NO SAMPLE - WELL DAMAGED E. .12/07/83 518516 Well WT-1 gross alpha NO SAMPLE - WELL DAMAGED 55 12/19/83 518485 Well WT-1 gross alpha 01/05/84 541623 Well WT-1 gross alpha 720 370 pCi/l [ 02/18/84 548584 Well WT-1 gross alpha 820i420 pCi/l .g 03/24/84 564942 Well WT-1 . gross alpha 46i25 pCi/l .g 04/28/84 578903 Well WT-1 gross alpha 370i190 pCi/l E 05/24/84 580402 Well WT-1 gross alpha 3001150 pCi/l 06/28/84 580373 Well WT gross alpha 360 190 pCi/l 1$ 07/27/84 602529 Well-WT-1 gross alpha 330il70 pCi/l L. 08/30/84 607714 Well WT-1 gross alpha 240i130 pCi/1 .R 09/27/84 602829 Well WT-1 gross alpha 160i80 pCi/l 3,. 10/24/84 578081 Well WT-1 gross alpha 170i90 pCi/1 = 11/06/84 626429 Well WT-1 gross alpha 140i70 pCi/1 12/11/84 626571 Well WT-1 gross alpha 230i120 pCi/l [ 01/14/85 633378 Well WT-1 gross alpha 520 270 pCi/l R. 02/11/85 647868 Well WT-1 gross alpha 350i180 pCi/l Ef 03/04/85 6509D6 Well WT-1 gross alpha 310 160 pCi/1 g 04/01/85 651239 Well WT-1 gross alpha 220 110 pCi/l N-05/06/85 666230 Well WT-1 gross alpha 96 50 pCi/l D 06/03/85 675397 Well WT-1 gross alpha 68 36 pCi/l DP 07/01/85 682433 Well WT-1 gross alpha 52i28 pCi/l 00/05/85 688241 Well WT-1 gross alpha <90 pCi/l 09/03/85 687537 Well WT-1 gross alpha 65 34 pCi/1 63/30/85 705752 Well WT-1 gross alpha 57i31 pCi/l 11/04/85 709279 Well WT-1 gross alpha 49 26 pCi/l 12/02/85 709382 Well WT-1 gross alpha 38 21 pCi/l 12/31/85 725259 Well WT-1 gross alpha 140i70 pCi/l 02/05/86 727974 Well WT-1 gross alpha 120i60 pCi/l 03/03/86 728848 Well WT-1 gross alpha 160i80 pCi/l 04/02/86 739253 Well WT-1 gross alpha 5600i2800 pCi/l 4 05/05/86 740054 Well WT-1 gross alpha 2000i1000 pCi/1 06/02/86 769803 Well WT-1 gross alpha 92 48 pCi/l [ 06/30/86 796778 Well WT-1 gross alpha 340il70 pCi/1 08/04/86 805152 Well WT-1 gross alpha 260 130 pCi/l l 09/03/86 759025 Well WT-1 gross alpha 58 31 pCi/l .w-

w. :-

= - = - -~

p ? a Page 2 cf 9 GE '. IIMINGTON. WASTE TREATMENT WELLS ACTIVITY VALUES x. (DATA FOR TABLE 5-24) 2-{ Sample Sample Date Number Location Analvte Result Units Comments E 09/29/86 804511 Well WT-1 gross alpha 70i37 pCi/l 11/03/86 791870 Well WT-1 gross alpha 57i31 pCi/l E 12/01/86 815535 Well WT-1 gross alpha 28116 pCi/l Q 12/30/86 815605 Well WT-1 gross alpha 35 20 pCi/1 2 02/02/87 815675 Well WT-1 gross alpha 32i18 pCi/l 5 03/02/87 815808 Well WT-1 gross alpha 38120 pCi/l 1 03/30/87 816076 Well WT-1 gross alpha 19ill pCi/l 4 04/29/87 816424 Well WT-1 gross alpha 26 15 pCi/l j 05/27/87 816605 Well WT-1 gross alpha 24i14 pCi/l z. 06/22/87 816885 Well WT-1 gross alpha 40i22 pCi/l G 08/03/87 817201 Well WT-1 gross alpha 24 14 pCi/l ]o 08/31/87 817601 Well WT-1 gross alpha 35t19 pCi/l 09/28/87 817827 Well WT-1 gross alpha 56i30 pCi/l 3: 10/26/87 818098 Well WT-1 gross alpha 38i21 pCi/l ( 11/18/87 818303 Well WT-1 gross alpha 50i27 pCi/l R 01/04/88 818736 Well WT-1 gross alpha 54i29 pCi/l E O2/01/88 819038 Well WT-1 gross alpha 44 24 pCi/l 2: 02/29/88 819368 Well WT-1 gross alpha <3 pCi/l 3 03/28/88 819639 Well WT-1 gross alpha 26il5 pCi/l ~ g 04/25/88 819929 Well WT-1 gross alpha 31 17 pCi/l E 05/23/88 82'J 249 Well WT-1 gross alpha 20ill pCi/l E 06/20/88 820466 Well WT-1 gross alpha 31il7 pCi/l g 08/01/88 820791 Well WT-1 gross alpha 42122 pCi/l N 2 08/29/88 821122 Well WT-1 gross alpha 31 17 pCi/l 09/26/88 821393 Well WT-1 gross alpha 38i21 pCi/l DP 10/19/88 821691 Well WT-1 gross alpha 42i23 pCi/l 11/14/88 822018 Well WT-1 gross alpha 43i23 pCi/l 01/09/89 822244 Well WT-1 gross alpha 33i18 pCi/l 01/25/89 835000 Well WT-1 gross alpha 32i18 pCi/l 02/06/89 822750 Well WT-1 gross alpha 15i9 pCi/l 02/20/89 701869 Well WT-1 gross alpha 1519 pCi/l 03/06/89 823017 Well WT-1 gross alpha 20112 pCi/l 03/20/89 704714 Well WT-1 gross alpha 19111 pCi/l 04/03/89 840698 Well WT-1 gross alpha 1619 pCi/l } 04/19/89 704868 Well WT-1 gross alpha 26i14 pCi/l 05/31/89 846019 Well WT-1 gross alpha 28i16 pCi/l 05/15/89 707392 Well WT-1 gross alpha 26il5 pCi/l 7 05/30/89 823208 Well WT-1 gross alpha 23 13 pCi/l 06/12/89 713315 Well WT-1 gross alpha 30il7 pCi/l ' 06/26/89 823222 Well WT-1 gross alpha 38 21 pCi/l

Page 3 ef 9 GE-WIIMINGTON WASTE TREATMENT WELIS ACTIVITY VALUES x (DATA FOR TABLE 5-24). 3-Sample Sample { Date Number Location Analvte Result Units Comments E 07/10/89 713328 Well WT-1 gross alpha 28i16 pCi/l 07/24/89 823249 Well WT-1 gross alpha 37 20 pCi/l E 08/22/89 823268 Well WT-1 gross alpha 48 26 pCi/l Q 09/11/89 823276 Well WT-1 gross alpha 31 17 pCi/1 $? j 09/20/89 713620 Well WT-1 gross alpha 34i19 pCi/l 55 10/02/89 823290 Well WT-1 gross alpha 33i19 pCi/l E j 10/18/89 713653 Well WT-1 gross alpha 40i22 pCi/l 4 E 06/23/83 488618 Well WT-1 gross beta 31i19 pCi/l 07/24/83 495102 Well WT-1 gross beta 25i18 pCi/l k. 08/20/83 498275 Well WT-1 gross beta 40i20 pCi/l 3 j 4 09/22/83 505356 Well WT-1 gross beta 51117 pCi/l E 10/21/83 498524 Well WT-1 gross beta 42 17 pCi/l NO SAMPLE - WELL DAMAGED y-12/07/83 518516 Well WT-1 gross beta NO SAMPLE - WELL DAMAGED 12/19/83 518485 Well WT-1 gross beta 01/05/84 541623 Well WT-1 gross beta 160i37 pCi/l R 02/18/84 548584 Well WT-1 gross beta 140i34 pCi/l 1 03/24/84 564942 Well WT-1 gross beta 19 14 pCi/l = 04/28/84 578903 Well WT-1 gross beta 45i16 pCi/l 3 05/24/84 580402 Well WT-1 gross beta 41 19 pCi/l { 06/28/84 580373 Well WT-1 gross beta 53i20 pCi/1 E 07/27/84 602529 Well WT-1 gross beta 36 15 pCi/1 1 08/30/84 607714 Well WT-1 gross beta 98i27 pCi/l g 09/27/84 602829 Well WT-1 gross beta 25il7 pCi/1 N 10/24/84 578081 Well WT-1 gross beta 49i9 pCi/l D 11/06/84 626429 Well WT-1 gross beta 38i18 pCi/l D9 12/11/84 626571 Well WT-1 gross beta 46i20 pCi/l 01/14/85 633378 Well WT-1 gross beta 83i26 pCi/l 02/11/85 647868 Well WT-1 gross beta 39122 pCi/l 03/04/85 650906 Well WT-1 gross beta 40 19 pCi/l 04/01/85 651239 Well WT-1 gross beta 49 17 pCi/l 05/06/85 666230 Well WT-1 gross beta <14 pCi/l 06/03/85 675397 Well WT-1 gross beta <12 pCi/l 07/01/85 682433 Well WT-1 gross beta 23 16 pCi/l 08/05/85 688241 Well WT-1 gross beta 27il7 pCi/l ? 09/03/85 687537 Well WT-1 gross beta 18116 pCi/l 4 09/30/85 705752 Well WT-1 ' gross beta 59i20 pCi/l 11/04/85 709279 Well WT-1 gross beta 24il5 pCi/l [ 12/02/85 709382 Well WT-1 gross beta 19il5 pCi/l 12/31/85 725259 Well WT-1 gross beta 42i18 pCi/l O2/05/86 727974 Well WT-1 gross beta 61 22 pCi/l

Page 4.of 9 GE-WILMINGTON CASTE TREATMENT WELLS ACTIVITY VALUES x (DATA FOR TAELE 5-24) 1 Sample Sample j, Date Number Location Analvte Result Units Comments s 03/03/86 728848 Well WT-1 gross beta 130i30 pCi/l 04/02/86 739253 Well WT-1 gross beta 970 200 pCi/l B 05/05/86.740054 Well WT-1 gross beta 650i130 pCi/l O 06/02/86 769803 Well WT-1 gross beta 26 15 pCi/l $3 C6/30/86 796778 Well WT-1 gross beta 150i40 pCi/l E! 08/04/86 805152 Well WT-1 gross beta 140i40 pCi/l E. 09/03/86 759025 Well WT-1 gross beta 93 25 pCi/l 4 09/29/86 804511 Well WT-1. gross beta 61 21 pCi/l I 11/03/86 791870 Well WT-1 gross beta 44i19 pCi/l 12/01/86 815535 Well WT-1 gross beta 48i20 pCi/l ( 12/30/86 815605 Well WT-1 gross beta 23 16 pCi/l 02/02/87 815675 Well WT-1 gross beta 34i19 pCi/l E 03/02/87 815808 Well WT-1 gross beta <15 pCi/l 03/30/87 816076 Well WT-1 gross beta 23 17 pCi/l ( 04/29/87 816424 Well WT-1 gross beta <17 pCi/l V 05/27/87 816605 Well WT-1 gross beta 22 17 pCi/l 1 06/22/87 816885 Well WT-1 gross beta <16 pCi/1 08/03/87 817201 Well WT-1 gross beta 29i16 pCi/l 3 08/31/87 817601 Well WT-1 gross beta 21 16 pCi/l { 09/28/87 817827 Well WT-1 gross beta <16 pCi/l E 10/26/87 818098 Well WT-1 gross beta <16 pCi/l E. 11/18/87 818393 Well WT-1 gross beta <16 pCi/l g 01/04/88 818736 Well WT-1 gross beta 18 16 pCi/l N 02/01/88 819088 Well WT-1 gross beta <16 pCi/l 2 02/29/88 819368 Well WT-1 gross beta <15 pCi/l D 03/28/88 819639 Well WT-1 gross beta <15 pCi/l 9 04/25/88 819929 Well WT-1 gross beta <15 pCi/l 05/23/88 820249 Well WT-1 gross beta <16 pCi/l 06/20/88 820466 Well WT-1 gross beta <16 pCi/l 08/01/88 820791 Well WT-1 gross beta <15 pCi/l 08/29/88 821122 Well WT-1 gross beta 29 15 pCi/l 09/26/88 821393 Well WT-1 gross beta 20il5 pCi/l 10/19/88 821691 Well WT-1 gross beta 18il5 pCi/l 11/14/88 822018 Well WT-1 gross beta 65i22 pCi/l ? 01/09/89 822244 Well WT-1 gross beta 26 17 pCi/l 4 01/25/89 835000 Well WT-1 gross beta 19 13 pCi/l u O2/06/89 822750 Well WT-1 gross beta 14 10 pCi/1 [ 02/20/89 701869 Well WT-1 gross beta <9 pCi/1 03/06/89 823017 Well WT-1 gross beta <12 pCi/l 03/20/89 704714 Well WT-1 gross beta <10 pCi/l

. Pag 3 5 cf 9 GE-WIIMINGTON WASTE TREATMENT WELLS ACTIVITY VALUES A-(DATA FOR TAELE 5-24) s 2 Sample Sample ( Date Number Location Analvte Result Units Comments E 04/03/89 840698 Well WT-1 gross beta 16i13 pCi/l 04/19/89 704868 Well WT-1 gross beta 19112 pCi/l B 05/01/89 846019 Well WT-1 gross beta 27i13 pCi/l O 05/15/89 707392 Well WT-1 gross beta <11 pCi/1 2-05/30/89 823208 Well WT-1 gross beta <11 pCi/l E} 06/12/89 713315 Well WT-1 gross beta 31il2 pCi/l 1 06/26/89 823222 Well WT-1 gross beta <10 pCi/l 4 07/10/89 713328 Well WT-1 gross beta 43 15 pCi/1 [ 07/24/89 823249 Well WT-1 gross beta 18 11 pCi/l z. 08/22/89 823268 Well WT-1 gross beta 16i10 pCi/l y 09/11/89 823276 Well WT-1 gross beta <11 pCi/l 09/20/89 713620 Well WT-1 gross beta 23i13 pCi/l E 10/02/89 823290 Well WT-1 gross beta <11 pCi/l 10/18/89 713653 Well WT-1 gross beta 28i13 pCi/l (, 01/26/83 346898 Well WT-9 gross alpha <37 pCi/1 s' 02/16/83 346833 Well WT-9 gross alpha <38 pCi/l 1 03/09/83 458394 Well WT-9 gross alpha <39 pCi/l = 04/06/83 464912 Well WT-9 gross alpha <3 pCi/l 3 05/18/83 472868 Well WT-9 gross alpha <2 pCi/1 ~ g 06/23/83 488615 Well WT-9 gross alpha <2 pCi/l R 07/24/83 495106 Well WT-9 gross alpha <3 pCi/l 3. 08/20/83 498276 Well WT-9 gross alpha <2 pCi/l g 09/22/83 505314 Well WT-9 gross alpha <3 pCi/l N WELL DRY 2 12/07/83 518514 Well WT-9 gross alpha 12/19/83 518498 Well WT-9 gross alpha WELL DRY D 01/05/84 541619 Well WT-9 gross alpha WELL DRY 9 02/18/84 548597 Well WT-9 gross alpha 6801350 pCi/l 03/24/84 564956 Well WT-9 gross alpha WELL DRY 04/28/84 578901 Well WT-9 gross alpha <2 pCi/l 08/30/84 607726 Well WT-9 gross alpha WELL DRY 09/18/84 607767 Well WT-9 gross alpha <3 pCi/l 09/28/84 602843 Well WT-9 gross alpha <4 pCi/1 10/24/84 578077 Well WT-9 gross alpha <2 pCi/l 11/06/84 626436 Well WT-9 gross alpha <3 pCi/1 y 12/11/84 626573 Well WT-9 gross alpha <2 pCi/l 4 01/14/85 633384 Well WT-9 gross alpha <2 pCi/l 02/11/85 647856 Well WT-9 gross alpha <3 pCi/1 [' 03/04/85 650940 Well WT-9 gross alpha <3 pCi/1 04/01/85 651277 Well WT-9 gross alpha 4i4 pCi/l 05/06/85 666216 Well WT-9 gross alpha 77141 pCi/l

~ Page 6 of 9 GE-DILMINGTON WASTE TREATMENT WELLS ACTIVITY VALUES x-(DATA FOR TAQLE 5-24) -p Sample Sample g Date Number Location Analvte Result Units Commqpts E 06/03/85 673599 Well WT-9 gross alpha 70i37 pCi/l 07/01/85 682448 Well WT-9 gross alpha 59i31 pCi/l B 08/05/85 688237 Well WT-9 gross alpha 63 33 pCi/l 0 09/03/85 687534 Well WT-9 gross alpha 68i36 pCi/1 2 09/30/85 705749 Well WT-9 gross alpha 63 33 pCi/l 11/04/85 709277 Well WT-9 gross alpha <2 pCi/1 E. 12/02/85 709380 Well WT gross alpha 32 18 pCi/l 4 WELL DRY E 02/05/86 727916 Well WT-9 gross alpha WELL DRY ~. 03/03/86 733416 Well WT-9 gross alpha z 05/05/86 739966 Well WT-9 gross alpha WELL DRY q 06/02/86 769864 Well WT-9 gross alpha WELL DRY 06/30/86 796750 Well WT-9 gross alpha WELL DRY E 09/03/86 759036 Well WT-9 gross alpha WELL DRY 09/29/86 804548 Well WT-9 gross alpha WELL DRY ( 11/03/86 791808 Well WT-9 gross alpha WELL DRY V WELL DRY E 12/01/86 815570 Well WT-9 gross alpha 12/30/86 815640 Well WT-9 gross alpha WELL DRY t 01/26/87 794744 Well WT-9 gross alpha <2 pCi/l 3 02/02/87 815710 Well WT-9 gross alpha <3 pCi/l ~ g 03/02/87 815843 Well WT-9 gross alpha <2 pCi/1 E 03/30/87 816111 Well WT-9 gross alpha <2 pCi/l 2. 04/29/87 816459 Well WT-9 gross alpha <2 pCi/l g 05/27/87 816640 Well WT-9 gross alpha 35i19 pCi/l N 06/22/87 816920 Well WT-9 gross alpha 22i13 pCi/1 08/03/87 817236 Well WT-9 gross alpha 19ill pCi/l D 08/31/87 817636 Well WT-9 gross alpha 32i18 pCi/l S' 09/28/87 817862 Well WT-9 gross alpha 46i25 pCi/l 10/26/87 818133 Well WT-9 gross alpha 44i24 pCi/1 11/18/87 818428 Well WT-9 gross alpha 57 30 pCi/l 01/04/88 818771 Well WT-9 gross alpha <2 pCi/1 02/01/88 819123 Well WT-9 gross alpha 40 22 pCi/l 02/29/88 819403 Well WT-9 gross alpha 37i21 pCi/l 03/28/88 819674 Well WT-9 gross alpha 26i15 pCi/l 04/25/88 819964 Well WT-9 gross alpha 20112 pCi/1 } 05/23/88 820284 Well WT-9 gross alpha 20il2 pCifl y 06/20/88 820501 Well WT-9 gross alpha 30116 pCi/l w 08/01/88 820826 Well WT-9 gross alpha 30i16 pCi/l [' 08/29/88 821157 Well WT-9 gross alpha 52i28 pCi/1 WELL DRY 09/26/88 821428 Well WT-9 gross alpha 10/19/88 821726 Well WT-9 gross alpha WELL DRY

Page 7 cf 9 GE-WIIJtINGTON CASTE TREATMENT WELLS ACTIVITY VALUES x (DATA FOR TACLE 5-24) 3 Sample Sample { Date Number Location Analvte Result - Units Comments E 11/14/88 822053 Well WT-9 gross alpha WELL DRY ~ 01/09/89 822279 Well WT-9 gross alpha WELL DRY E 03/20/89 704812 Well WT-9 gross alpha WELL DRY Q 04/19/89 704875 Well WT-9 gross alpha WELL DRY 2 05/01/89 846006 Well WT-9 gross alpha WELL DRY 3 05/15/89 707393 Well WT-9 gross alpha WELL DRY d 05/30/89 823215 Well WT-9 gross alpha WELL DRY 4 06/12/89 713308 Well WT-9 gross alpha WELL DRY E 06/26/89 823229 Well WT-9 gross alpha WELL DRY 07/10/89 713329 Well WT-9 gross alpha WELL DRY 07/24/89 823256 Well WT-9 gross alpha WELL DRY 08/22/89 823275 Well WT-9 gross alpha WELL DRY E 09/01/89 823261 Well WT-9 gross alpha WELL DRY y: 09/11/89 823283 Well WT-9 gross alpha WELL DRY (, 10/02/89 823297 Well WT-9 ' gross alpha <2 pCi/1 R 10/18/89 713652 Well WT-9 gross alpha <2 pCi/l 1 01/26/83 346898 Well WT-9 gross beta <43 pCi/l = 02/16/83 346833 Well WT-9 gross beta <43 pCi/l 3 03/09/83 458394 Well WT-9 gross beta- <48 pCi/l { 04/06/83 464912 Well NT-9 gross beta <16 pCi/l E 05/18/83 472868 Well WT-9 gross beta 31il7 pCi/l EL 06/23/83 488615 Well WT-9 gross beta <17 pCi/l g 07/24/83 495106 Well WT-9 gross beta <17 pCi/l N 08/20/83 498276 Well WT-9 gross beta <18 pCi/l 2 09/22/83 505314 Well WT-9 gross beta 26i19 pCi/1 D 12/07/83 518514 Well WT-9 gross beta WELL DRY P 12/19/83 518498 Well WT-9 gross beta WELL DRY 01/05/84 541619 Well WT-9 gross beta WELL DRY 02/18/84 548597 Well WT-9 gross beta 130i31 pCi/l 03/24/84 564956 Well WT-9 gross beta WELL DRY 04/28/84 578901 Well WT-9 gross beta <11 pCi/l 08/30/84 607726 Well WT-9 gross beta WELL DRY 09/18/84 607767 Well WT-9 gross beta <16 pCi/l 09/28/84 502843 Well WT-9 gross beta <16 pCi/l 7 10/24/84 578077 Well WT-9 gross beta <16 pCi/l q 11/06/84 626436 Well WT-9 gross beta <17 pCi/l w 12/11/84 626573 Well WT-9 gross beta <16 pC1/1 7 01/14/85 633384 Well WT-9 gross beta <16 pCi/l O2/11/85 647856 Well WT-9 gross beta <16 pCi/l 03/04/85 650940 Well WT-9 gross beta <16 pCi/l

Page 8 cf 9 GE-!TIMINGTON CASTE TREATMENT WELLS ACTIVITY VALUES x (DATA FOR TAELE 5-24) s 3 Sample Sample { Date Number Location Analvte Result Units Comments E 04/01/85 651277. Well WT-9 gross beta <11 pCifl 05/06/85 666216 Well WT-9 gross beta <14 pCi/l E 06/03/85 673599 Well WT-9 gross beta <11 pCi/l O 07/01/85 682448 Well WT-9 gross beta 33i18 pCi/l 2 08/05/85 688237 Well WT-9 gross beta 19il5 pCi/l 5 09/03/85 687534 Well WT-9 gross beta 27 16 pCi/l 1 09/30/85 705749 Well WT-9 gross beta 39 18 pCi/l 4 11/04/85 709277 Well WT-9 gross beta 16il5 pCi/l 12/02/85 709380 Well WT-9 gross beta 20il5 pCi/l {. 02/05/86 727916 Well WT-9 gross beta WELL DRY g 03/03/86 733416 Well WT-9 gross beta WELL DRY 05/05/86 739966 Well WT-9 gross beta WELL DRY E 06/02/86 769864 Well WT-9 gross beta WELL DRY y 06/30/86 796750 Well WT-9 gross beta WELL DRY (, 09/03/86 759036 Well WT-9 gross beta WELL DRY R 09/29/86 804548 Well WT-9 gross beta WELL DRY l 11/03/86 791808 Well WT-9 gross beta WELL DRY a 12/01/86 815570 Well WT-9 gross beta WELL DRY 3 12/30/86 815640 Well WT-9 gross beta WELL DRY 01/26/87 794744 Well WT-9 gross beta <17 pCi/l E 02/02/87 815710 Well WT-9 gross beta <l5 pCi/l 1 03/02/87 815843 Well WT-9 gross beta 36118 pCi/l g 03/30/87 816111 Well WT-9 gross beta <15 pCi/l N 04/29/87 816459 Well WT-9 gross beta <17 pCi/l 05/27/87 816640 Well WT-9 gross beta 19 17 pCi/l D 06/22/87 816920 Well WT-9 gross beta 31 16 pCi/l 9 08/03/87 817236 Well WT-9 gross beta <15 pCi/l 08/31/87 817636 Well WT-9 gross beta <17 pCi/l 09/28/87 817862 Well WT-9 gross beta 16 16 pCi/l 10/26/87 818133 Well WT-9 gross beta 32116 pCi/l 11/18/87 818428 Well WT-9 gross beta 22i16 pCi/1 01/04/88 618771 Well WT-9 gross beta <16 pCi/l 02/01/88 819123 Well WT-9 gross beta <17 pCi/l 02/29/88 819403 Well WT-9 gross beta <15 pCi/l } 03/28/88 819674 Well WT-9 gross beta <15 pCi/l y 04/25/88 819964 Well WT-9 gross beta <16 pCi/l w 05/23/88 820284 Well WT-9 gross beta <l4 pCi/l 7 06/20/88 820501 Well WT-9 gross beta <16 pCi/l 08/01/88 820826 Well WT-9 gross beta <16 pCi/l 08/29/88 821157 Well WT-9 gross beta <15 pCi/l

Page 9 of 9 GE-WIIJIINGTON WASTE TREATMENT WELLS ACTIVITY VALUES x (DATA FOR TAQLE 5-24) y_ ?> Sample Sample -g Date Number Location Analvte Result Units Comments E 09/26/88 821428 Well WT-9 gross beta WELL DRY ~ 10/19/88 821726 Well WT-9 gross beta WELL DRY E 11/14/88 822053 Well WT-9 gross beta WELL DRY o-01/09/89 822279 Well WT-9 gross beta WELL DRY 2 03/20/89 704812 Well WI-9 gross beta WELL DRY E2 04/19/89 704875 Well WT-9 gross beta WELL DRY { 05/01/89 846006 Well WT-9 gross beta WELL DRY 4 05/15/89 707393 Well WT-9 gross beta WELL DRY E 05/30/39 823215 Well WT-9 gross beta WELL DRY { 06/12/89 713308 Well WT-9 gross beta WELL DRY g 06/26/89 823229 Well WT-9 gross beta WELL DRY w 07/10/89 713329 Well WT-9 gross beta WELL DRY E 07/24/89 823256 Well WT-9 gross beta WELL DRY y 08/22/89 823275 Well WT-9 gross beta WELL DRY ( 09/01/89 823261 Well WT-9 gross beta WELL DRY v 09/11/89 823283 Well WT-9 gross beta WELL DRY E 10/02/89 823297 Well WT-9 gross beta <12 pCi/l = 10/18/89 713652 Well WT-9 gross beta .<11'pCi/l y D A hhR 4 t: R

Page 1 cf 8 GE-WIIJIINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES _x (DATA FOR TABLE 5-20) g-2 Sample Sample 3 Date Number Location Analvte Result Units Comments [ 09/27/83 505129 Well ZC gross alpha 2901150 pCi/l 10/21/83 505196 Well ZC gross alpha 160i80 pCi/l E 12/05/83 519537 - Well ZC gross alpha 130 70 pCi/1 c) 12/19/83 518476 Well ZC gross alpha 47 38 pCi/l 2 01/05/84 541635 Well ZC gross alpha <2 pCi/1 Q 02/23/84 548524 Well ZC gross alpha <2 pCi/l { 03/23/84 565255 Well ZC gross alpha 17110 pCi/l 4 04/26/84 565294 Well ZC gross alpha 3i3 pCi/l B 05/17/84 578989 ' Well ZC gross alpha 47i24 pCi/l ~ ~. 06/22/84 580369 Well ZC gross alpha <4 pCi/l 3 07/18/84 593874 Well ZC . gross alpha <5 pCi/l 0 08/24/84 607737-Well ZC gross alpha <3 pCi/l B 09/26/84 602824 Well ZC gross alpha 23 13 pCi/l R 10/19/84 580371 Well ZC gross alpha 615 pCi/l [, 11/06/84 626423 Well ZC gross alpha 4 4 pCi/1 g 12/03/84 626555 Well ZC gross alpha 4i4 pCi/l 1 01/09/85 633362 Well ZC gross alpha 4 4 pCi/l g 02/13/85 647809 Well ZC gross alpha <3 pCi/l a 03/11/85 653580 Well ZC gross alpha 24 14 pCi/l { ~ 04/09/85 661161 Well ZC gross alpha 27il5 pCi/1 g 05/13/85 666273 Well ZC gross alpha <2 pC1/1 Q 06/10/85 679508 Well ZC gross alpha 6i5 pCi/l o 07/08/85 682617 Well ZC gross alpha 40i22 pCi/1 R 08/12/85 687355 Well ZC gross alpha 6iS pCi/1 3 09/09/85 697466 Well ZC gross alpha 4i4 pCi/l D 10/07/85 705869 Well ZC gross alpha <3 pCi/1 P 11/11/85 70948G Well ZC gross alpha 716 pCi/1 12/09/85 718818 Well ZC gross alpha 6i5 pCi/l 01/06/86 725433 Well ZC gross alpha 9i7 pCi/l 02/10/86 729118 Well ZC gross alpha <4 pCi/1-03/10/86 733318 Well ZC gross alpha <4 pCi/1 04/07/86 743818 Well ZC gross alpha 414 pCi/l 05/12/86 761022 Well ZC gross alpha 8 6 pCi/l 06/09/86 815353 Well ZC gross alpha 4 4 pCi/l y 07/09/86 797088 Well ZC gross alpha 6 6 pCi/l q 08/13/86 804678 Well ZC gross alpha <3 pCi/l u,. 09/08/86 758856 Well ZC gross alpha 2i2 pCi/l 7 10/06/86 758968 Well ZC gross alpha 6i6 pCi/l 's 11/10/86 815515. Well ZC gross alpha <3 pCi/l 12/08/86 815585 Well ZC gross alpha <2 pCi/l -,a _.--am-. ,nar.

m Pcg3 2 of 8 GE-WILMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES x (DATA'FOR TABLE 5-20) 3 Sample Sample { Date Number Location Analvte Result Units Comments E 01/05/87 015655 Well ZC gross alpha 3 3 pCi/l 02/09/87 815725 Well ZC gross alpha 7i5 pCi/l E 03/09/87 815930 Well ZC gross alpha 414 pCi/1 0 04/06/87 816189 Well ZC gross alpha <2 pCi/1 2 05/04/87 816504 Well ZC gross alpha <4 pCi/l El 06/01/87 816748 Well ZC gross alpha 6 5 pCi/l 1 06/29/87 817037 Well ZC gross alpha 4 4 pCi/l 5 08/10/87 817385 Well ZC gross alpha <3 pCi/l j 09/09/87 817744. Well ZC gross alpha 7 5 pCi/l z. 09/30/87 817934 Well ZC gross alpha 5 4 pCi/l g 11/02/87 818271 Well ZC gross alpha 14i9 pCi/l 11/30/87 818548 Well ZC gross alpha <3 pCi/l E 01/12/88 818966 Well ZC gross alpha 4 4 pCi/l 3: 02/08/88 819258 Well ZC gross alpha 414 pCi/l ( 03/07/88 819520 Well ZC gross alpha 3 3 pCi/1 4-04/06/88 819803 Well ZC gross alpha 4 pCi/1 E 5 05/02/88 820045 Well ZC gross alpha <2 pCi/l m 06/01/88 820365 Well ZC gross alpha <4 pCi/l 3 06/27/88 820609 Well ZC gross alpha <4 pCi/l { 08/08/88 820982 Well ZC gross alpha <3 pCi/1 E 09/06/88 821283 Well ZC gross alpha 6 5 pCi/l EL 10/03/88 821554 Well ZC gross alpha <3 pCi/l g 10/31/88 821837 Well ZC gross alpha 9 6 pCi/l N 11/17/88 822116 Well ZC gross alpha <3 pCi/1 2 01/16/89 822592 Well ZC gross alpha <2 pCi/l D 02/13/89 822863 Well ZC gross alpha 3 3 pCi/l 9 03/13/89 823148 Well ZC gross alpha 3i3 pCi/1 04/10/89 823105 Well ZC gross alpha 2i2 pCi/1 05/08/89 846011 Well ZC gross alpha <2 pCi/1 06/05/89 823218 Well ZC gross alpha <2 pCi/l 06/05/89 823218 Well ZC gross alpha <2 pCi/1 06/05/89 823232 Well ZC gross alpha <2 pC1/1 06/05/89 823232 Well ZC gross alpha <2 pCi/1 06/19/89 713323 Well ZC gross alpha <2 pCi/l y 07/20/89 713344 Well ZC gross alpha ~ <2 pCi/l y 08/01/89 823259 Well ZC gross alpha <2 pCi/l u, 08/28/89 713393 Well ZC gross alpha <2 pCi/l [ 09/13/89 823286 Well ZC gross alpha <2 pCi/l ' s 10/09/89 823300 Well ZC gross alpha <2 pCi/l 11/06/89 823322 Well ZC gross alpha <2 pCi/1 M-t'-' + m.. -m m m. m

Pag:2 3 of 8 GE-WIIMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES x: (DATA FOR TABLE 5-28) @g.. Sample' Sample ( Date Number Location Analvte Result Units Comments E 09/27/83 505129 Well ZC gross beta 120i90 pCi/l 10/21/83 505196 Well ZC gross beta 62i19 pCi/l E 12/05/83 518537 Well ZC gross beta 87 23 pCi/l ~ Q 12/19/83 518476 Well ZC gross beta 57 18 pCi/l 2 01/05/84 541635 Well ZC gross beta <13 pCi/l 3 02/23/84 548524 Well ZC gross beta <14 pCi/l 3. 03/23/84 565255 Well ZC gross beta <15 pCi/l 4 04/26/84 565294 Well ZC gross beta 20il2 pCi/l j 05/17/04 578989 Well ZC gross beta 50i19 pCi/l z. 06/22/84 580369 Well ZC gross beta <18 pCi/l G 07/18/84 593874 Well ZC gross beta <16 pCi/l 08/24/84 607737 Well ZC gross beta 20 36 pCi/l E 09/26/84 602824 Well ZC gross beta 36i18 pCi/l y 10/19/84 580371 Well ZC gross beta <15 pCi/l 11/06/84 626423 Well ZC gross beta 69 23 pCi/l i 12/03/84 626555 Well ZC gross beta 29118 pCi/l 3. 01/09/85 633362 Well ZC gross beta <16 pCi/l = 02/13/85 647809 Well ZC gross beta 18i16 pCi/l 3( 03/11/85 653580 Well ZC gross beta 45 20 pCi/l 04/09/85 661161 Well ZC gross beta 13 11 pCi/l E 05/13/85 666273 Well ZC gross beta <11 pCi/l E. 06/10/85 679508 Well ZC gross beta <11 pCi/l g 07/08/85 682617 Well ZC gross beta 46i20 pCi/l N 08/12/85 687355 Well ZC gross beta <16 pCi/l D 09/09/85 697466 Well ZC gross beta <15 pCi/l D 10/07/85 705869 Well ZC gross beta <15 pCi/1 9 11/11/85 709480 Well ZC gross beta 18 15 pCi/l 12/09/85 718018 Well ZC gross beta <14 pCi/l 01/06/86 725433 Well ZC gross beta <15 pCi/l 02/10/86 729118 Well ZC gross beta <16 pCi/l 03/10/86 733318 Well ZC gross beta 20 15 pCi/l 04/07/86 743818 Well ZC gross beta 16 14 pCi/l 05/12/86 761022 Well ZC gross beta 140 30 pCi/l l 06/09/86 815353 Well ZC-gross beta 31 16 pCi/l ? 07/09/86 797088 Well ZC gross beta <14 pCi/l 4 i 08/13/86 804678 Well ZC gross beta 35i16 pCi/l 09/08/86 758856 Well ZC gross beta <14 pCi/l 7 l 10/06/86 758968 Well ZC gross beta 33 16 pCi/l 's l 11/10/86 815515 Well ZC gross beta <16 pCi/l l 12/08/86 815585 Well ZC gross beta <15 pCi/l I -.. ~..

Page 4-of 8 GE-WIIMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES a (DATA FOR TABLE 5-28) 2 Sample Sample ( Date Number Location Analvte Result Units Comments E 01/05/87 815655 Well ZC gross beta <16 pCi/l 02/09/87 815725 Well ZC gross beta <15 pCi/l E 03/09/87 815930 Well ZC gross beta <16 pCi/l Q 04/06/87 816189 Well ZC gross beta <17 pCi/l 05/04/87 816504 Well ZC gross beta <16 pCi/l d 06/01/87 816748 Well ZC gross beta <15 pCi/l 06/29/87 817037 Well ZC gross beta <16 pCi/l 08/10/87 817385 Well ZC gross beta <16 pCi/l 3 09/09/87 817744 Well ZC gross beta <15 pCi/l z-09/30/87 817934 Well ZC gross beta <15 pCi/l 5 11/02/87 818271 Well ZC gross beta <16 pCi/l 2 11/30/87 818548 Well ZC gross beta <16 pCi/l o 01/12/88 818966 Well ZC gross beta <16 pCi/l 02/08/88 819258 Well ZC gross beta <15 pCi/l L 03/07/88 819520 Well ZC gross beta <16 pCi/l { 04/06/88 819803 Well ZC gross beta <15 pCi/l 2 05/02/88 820045 Well ZC-gross beta <16 pCi/l t 06/01/88 820365 Well ZC gross beta <16 pCi/l 3 06/27/88 820609 Well ZC gross beta <14 pCi/l { 4 08/08/88 820982 Well ZC gross beta <15 pCi/l E 09/06/88 821283 Well ZC gross beta <15 pCi/l E. 10/03/88 821554 Well ZC gross beta <15 pCi/l g 10/31/88 821837 Well ZC gross beta <14 pCi/l h i 11/17/88 822116 Well ZC gross beta 42 17 pCi/l q 01/16/89 822592 Well ZC gross-beta <12 pCi/l e 02/13/89 822863 Well ZC gross beta 28 12 pCi/l E 03/13/89 823148 Well ZC gross beta <11 pCi/l 04/10/89 823105 Well ZC gross beta <12 pCi/l 05/08/89 846011 Well ZC gross beta <11 pCi/l 06/05/89 823218 Well ZC gross beta <11 pCi/l 06/05/89 823218 Well ZC gross beta <14 pCi/l 06/05/89 823232 Well ZC gross beta <11 pCi/l 06/05/89 823232 Well ZC gross beta <14 pCi/l 06/19/89 713323 Well ZC gross beta 23 11 pCi/l 2 07/20/89 713344 Well ZC gross beta <10 pCi/l 08/01/89 823259 Well ZC gross beta <13 pCi/l g 08/28/89 713393 Well ZC gross beta 23 12 pCi/l e 09/13/89 823286 Well ZC gross beta <12 pCi/l 10/09/89 823300 Well ZC gross beta 17112 pC1/1 11/06/89 823322 Well ZC gross beta <12 pCi/l ~

== ? Paga 5 cf 8 GE-WIIMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES A (DATA FOR TACLE 5-20) j 9 Sample. Sample .3 Date Number Location Analvte Result Units Comments E-09/27/83 505121 Well ZE gross alpha 13 9 pCi/l 10/21/83 505200 Well ZE gross alpha St5 pCi/l E 12/05/83 518535 Well ZE gross alpha 66i34 pCi/l Q 12/19/83 518474 Well ZE gross alpha 4 4 pCi/l 2 01/05/84 541643 Well ZE gross alpha 4i3 pCi/l El 02/23/84 548522 Well ZE gross alpha <3 pCi/l S. 03/22/84 565261 Well ZE gross alpha <3 pCi/l 4 04/26/84 565296 Well ZE gross alpha 48i25 pCi/l E 05/17/84 578987 Well ZE gross alpha 5 4 pCi/J k. 06/22/84 580360 Well ZE gross alpha sis pCi/l Q 07/18/84 593876 Well ZE gross alpha <3 pCi/l G8/24/84 607731 Well ZE gross alpha <2 pCi/1 3 09/26/84 602819 Well ZE gross alpha <3 pCi/1 y 10/19/84 602740 Well ZE gross alpha <3 pCi/l (, 11/06/84 626422 Well ZE gross alpha 515 pCi/l R 12/03/84 626558 Well ZE gross alpha 6iS pCi/l 1 01/09/85 633359 Well ZE gross alpha 16i10 pCi/l 2: 02/13/85 647838 Well ZE gross alpha 8 6 pCi/l 3 03/11/85 653581 Well ZE gross alpha <4 pCi/l ( 04/09/85 661136 Well ZE gross alpha 10 7 pCi/l E 05/13/85 666299 Well ZE gross alpha 4 4 pCi/l E. 06/10/85 677790 Well ZE gross alpha 23i13 pCi/1 g 07/08/85 682627 Well ZE gross alpha 4 3 pCi/l N 08/12/85 687341 Well ZE gross alpha 20il2 pC1/1 3 09/09/85 697475 Well ZE gross alpha <5 pCi/1 D 10/07/85 705853 Well ZE gross alpha 34il9 pCi/1 9 11/11/85 709490 Well ZE gross alpha <3 pCi/l 12/09/85 718803 Well ZE gross alpha 7i6 pCi/1 01/06/86 725499 Well ZE gross alpha <4 pCi/l 02/10/86 729102 Well ZE gross alpha 14i9 pCi/l 03/10/86 733307 Well ZE gross alpha 11 7 pCi/l 04/07/86 743802 Well ZE gross alpha <2 pCi/l 05/12/86 761052 Well ZE gross alpha 3 3 pCi/l 06/09/86 815337 Well ZE gross alpha <2 pCi/1 } 07/09/86 797028 Well ZE gross alpha 5 4 pCi/1 08/13/86' 804664 09/08/86 758840. Well ZE gross alpha Si4 pCi/l w Well ZE gross alpha 715 pC1/1 [ 10/06/86 758955 Well ZE gross alpha 11i8 pCi/l 11/10/86 815505 Well ZE gross alpha <2 pCi/l 12/08/86 815575 Well ZE gross alpha <2 pC1/1

PCge 6 of 8 GE ~1ILMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES .x (DATA FOR TAELE 5-23) 9 Sample Sample ( Date ' Number Location Analvte Result Units Comments E 01/05/87 815645 Well ZE gross alpha Si5 pCi/1 ~- 02/09/87 815715 Well ZE gross alpha 4 4 pCi/l E 03/09/87 815920 Well ZE gross-alpha 4i3 pCi/1 0 04/06/87 816179 Well ZE gross alpha 4i4 pCi/l 2 05/04/87 816494 Well ZE gross alpha <3 pCi/l_ 5 06/01/87 816738 Well ZE gross alpha <2 pCi/l 1 06/29/87 817027 Well ZE gross alpha <3 pCi/l 4 08/10/87 817375 Well ZE gross alpha 313 pCi/l E 09/09/87 817734 Well ZE gross alpha 414 pCi/l s. 3 09/30/87 817924 Well ZE gross alpha 2 2 pCi/l j 11/02/87 818261 Well ZE gross alpha <3 pCi/1 11/30/87 818538 Well ZE gross alpha Bi6 pCi/l E 01/12/88 818956 Well ZE gross alpha <4 pCi/l 02/08/88 819248 Well ZE gross alpha <3 pCi/l L 03/07/88 819510 Well ZE gross alpha 4i4 pCi/l ? 04/06/88 819793 Well ZE gross alpha 4 3 pCi/1 1 05/02/88 820035 Well ZE gross alpha <3 pCi/l 06/01/88 820355 Well ZE gross alpha <4 pCi/l 3 06/27/88 820599 Well ZE gross alpha <4 pCi/1 { 08/08/88 820972 Well ZE gross alpha 2 2 pCi/l E 09/06/88 821273 Well ZE gross alpha <3 pCi/l E. 10/G3/88 821544 Well ZE gross alpha <2 pCi/l g 10/31/88 821827 Well ZE gross alpha 4i4 pCi/1 N 11/17/88 822106 Well ZE gross alpha 13 8 pCi/l 01/16/89 822582 Well ZE gross alpha 7i6 pCi/1 D 02/13/89 822853 Well ZE gross alpha 6i5 pCi/1 03/13/89 823138 Well ZE gross alpha <2 pCi/l 04/10/89 823103 Well ZE gross alpha 2 2 pCi/l 05/08/89 846012 Well ZE gross alpha <3 pCi/1 06/05/89 823216 Well ZE gross alpha Si4 pCi/1 06/05/89 823216 Well ZE gross alpha 7 5 pCi/l 06/05/89 823230 Well ZE gross alpha Si4 pCi/1 06/05/89 823230 Well ZE gross alpha 7 5 pCi/l 08/01/89 823257 Well ZE gross alpha 8i6 pCi/l } 09/13/89 823284 Well ZE gross alpha 10 7 pCi/1 4 10/09/89 823298 Well ZE gross alpha <3 pCi/1 11/06/89 823320 Well ZE gross alpha 3i3 pCi/l [ 12/06/89 823349 Well ZE gross alpha Bi6 pCi/1 09/27/83 505121 Well ZE gross beta 23114 pCi/1 10/21/83 505200 Well ZE gross beta <14 pCi/1

Page 7 of 8- ~ GE-WILMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES x (DATA FOR TATLE 5-28) g 2 Sample Sample g Date Number Location Analvte Result Units Comments E 12/05/83 518535 Well ZE gross beta 57 18 pC1/1 12/19/83 518474 Well ZE gross beta <13 pCi/l E 01/05/84 541643 Well ZE gross beta <13 pCi/l o 02/23/84 548522 Well ZE gross beta 23il5 pCi/1 2 03/22/84 565261 Well ZE gross beta 20115 pCi/1 04/26/84 565296 Well ZE gross beta 14 11 pCi/l d, 05/17/84 578987 Well ZE gross beta <14 pCi/l 4 06/22/84 580360 Well ZE gross beta <18 pCi/l E 07/18/84 593876 Well ZE gross beta <16 pCifl {. 08/24/84 607731 Well ZE gross beta 33i18 pCi/l 09/26/84 602819 Well ZE gross beta <16 pCi/l 4 10/19/84 602740 Well ZE gross beta 18il5 pCi/l E 11/06/84 626422 Well ZE gross beta <16 pCi/l g; 12/03/84 526558 Well ZE gross beta 21il7 pCi/l ( 01/09/85 33359 Well ZE gross beta 21il7 pCi/l y 02/13/85 647838 Well ZE gross beta 24 17 pCi/l 3[ 03/11/85 653581 Well ZE gross beta <16 pCi/l = 04/09/85 661136 Well ZE gross beta <11 pCi/l j 05/13/85 666299 Well ZE gross heta <11 pCi/l { 06/10/85 677790 Well ZE gross beta 12r11 pCi/l E 07/08/85 682627 Well ZE gross beta <16 pCi/l E. 08/12/85 687341 Well ZE gross beta 32i16 pCi/1 g 09/09/85 697475 Well ZE gross beta <15 pCi/l N 10/07/85 705853 Well ZE gross beta 36118 pCi/1 N 11/11/85 709490 Well ZE gross beta <14 pCi/l D 12/09/85 718803 Well ZE gross beta <14 pCi/l 9 01/06/86 725499 Well ZE gross beta <15 pCi/l 02/10/86 729102 Well ZE gross beta 29 17 pCi/l 03/10/86 733307 Well ZE gross beta <14 pCi/l 04/07/86 743802 Well ZE gross beta <13 pCi/l 05/12/86 761052 Well ZE gross beta <14 pCi/l 06/09/86 815337 Well ZE gross beta <14 pCi/l 07/09/86 797028 Well ZE gross beta <14 pCi/l 08/13/86 804664 Well ZE gross beta <14 pCi/l y 09/08/86 758840 Well ZE gross beta <12 pCi/1 q 10/06/86 758955 Well ZE gross beta 24il5 pCi/l w 11/10/86 815505 Well ZE gross beta <16 pCi/l [ 12/08/86 815575 Well ZE gross beta <15 pCi/l 01/05/87 815645 Well ZE gross beta <16 pCi/l 02/09/87 815715 Well ZE gross beta 17 16 pCi/l

Page 8 of 8 GE-WIIMINGTON ZIRC SLUDGE AREA WELLS ACTIVITY VALUES x (DATA FOR TA%LE 5-20) 3 Sample ' Sample j Date Number Location Aralvte Rasult Units Comments E 03/09/87 815920 Well ZE gross beta <16 pCi/l 04/06/87 816179 Well ZE gross beta 32il7 pCi/l B 05/04/87 816494 Well ZE grosc beta <16 pCi/l o 06/01/87 816738 Well ZE gross beta <15 pCi/l 2 06/29/87 817027 Well ZE gross beta <16 pCi/l 08/10/87 817375 Well ZE gross beta <16 pCi/l [ 09/09/87 817734 Well ZE gross beta <15 pCi/l 4 09/30/87 817924 Well ZE gross beta <15 pCi/l E 11/02/87 818261 Well ZE gross beta <16 pCi/l (s. 11/30/87 818538 Well ZE gross beta <16 pCi/l 01/12/88 818956 Well ZE gross beta 20il7 pCi/1 02/08/88 819248 Well ZE gross beta <15 pCi/l E 4 03/07/88 819510 Well ZE gross beta <l6 pCi/1 04/06/88 019793 Well ZE gross beta <15 pCi/l ( 05/02/88 820035 Well ZE gross beta <16 pCi/l R 06/01/88 820355 Well ZE gross beta <16 pCi/l E 06/27/88 820599 Well ZE gross beta 16il5 pCi/l a 08/08/88 820972 Well ZE gross beta <15 pCi/l 09/06/88 821273 Well ZE gross beta <15 pCi/l [ 10/03/88 821544 Well ZE gross beta <15 pCi/l E 10/31/88 821827 Well ZE gross beta <14 pCi/l d. 11/17/88 822106 Well ZE gross beta <16 pCi/l g 01/16/89 822582 Well ZE gross beta 24 11 pCi/l N 02/13/89 822853 Well ZE gross beta <12 pCi/l 03/13/89 823138 Well ZE gross beta <11 pCi/1 D 04/10/89 823133 Well ZE gross beta <12 pCi/l 9 05/08/89 846012 Well ZE gross beta 29 13 pCi/l 06/05/89 823216 Well ZE gross beta <14 pCi/l 06/05/89 823216 Well ZE gross beta 23 12 pCi/l 06/05/89 823230 Well ZE gross beta <14 pCi/l 06/05/89 823230 Well ZE gross beta 23 12 pCi/l 08/01/89 823257 Well ZE gross beta <10 pC1/1 09/13/89 823284 Well ZE gross beta <12 pCi/l 10/09/89 823298 Well ZE gross beta <11 pCi/l y 11/06/89 323320 Well ZE gross beta <12 pCi/l 12/06/89 823349 Well ZE gross beta <13 pCi/l R

Page 1 cf 21 GE-L'IIJtINGTON WASTE TREATMENT WELLS CHEMICAL VALUES x (DATA FOR TABLE 5-52)- 3-Sample Sample ( Date Number Location Analvte Result Units Comments E 01/26/83 346887 Well WT-1 fluoride 2.18 ppm O2/16/83 346775 Well WT-1 fluoride 1.50 ppm E 03/09/83 458397 Well WT-1 fluoride 1.60 ppm O 04/06/83 464901 Well WT-1 fluoride 1.04 ppm 2 05/18/83 472858 Well NT-1 fluoride 1.70 ppm 5 06/23/83 488616 Well WT-1 fluoride 1.30 ppm E 07/24/83 495111 Well WT-1 fluoride 0.96 ppm 5 08/20/83 498277 Well WT-1 fluoride 0.69 ppm (- 09/22/83 505355 Well WT-1 fluoride 0.80 ppm E. 10/21/83 498525 Well WT-1 fluoride 1.20 ppm j 12/19/83 518499 Well WT-1 fluoride NO SAMPLE - WELL DAMAGED 4 01/05/84 541621 Well WT-1 fluoride 1.30 ppm E 02/18/84 548583 Well WT-1 fluoride 1.60 ppm 3: 03/24/84 564941 Well WT-1 fluoride 2.00 ppm ( 04/28/84 578904 Well WT-1 fluoride 2.20 ppm R 05/24/84 580403 Well WT-1 fluoride 1.32 ppm E 06/28/84 580374 Well WT-1 fluoride 1.00 ppm 2: 07/27/84 602527 Well WT-1 fluoride 0.95 ppm 3 08/30/84 607709 Well WT-1 fluoride 0.83 ppm ( 09/27/84 602842 Well WT-1 fluoride 0.72 ppm R 10/24/84 578079 Well WT-1 fluoride 0.60 ppm E 11/06/84 626428 Well WT-1 fluoride 1.12 ppm g 12/11/84 626570 Well WT-1 fluoride 0.61 ppm N 01/14/85 633383 Well WT-1 fluoride 0.65 ppm O 02/11/85 647866 Well WT-1 fluoride 1.48 ppm D9 C3/04/85 650903 Well WT-1 fluoride 1.05 ppm 04/01/85 651238 Well WT-1 fluoride 0.55 ppm 05/06/85 666232 Well WT-1 fluoride 0.87 ppa 06/03/85 675395 Well WT-1 fluoride 0.38 ppm 07/01/85 682431 Well WT-1 fluoride 0.52 ppm 08/05/85 688239 Well WT-1 fluoride 0.35 ppa 09/03/85 687535 Well WT-1 fluoride 1.15 ppm 09/30/85 705755 Well WT-1 fluoride 0.73 ppm 11/04/85 709283 Well WT-1 fluoride 1.12 ppm } 12/02/85 709366 Well WT-1 fluoride 0.45 ppm Q ~ 12/31/85 725257 Well WT-1 fluoride 0.42 ppa w 02/05/86 727972 Well WT-1 fluoride 0.78 ppa y 03/03/86 728846 Well WT-1 fluoride 0.27 ppa 04/02/86 739251 Well WT-1 fluoride 63.09 ppa 05/05/86 740052 Well WT-1 fluoride 8.26 ppa

Page 2 of 21 GE-WIIJIINGTON WASTE TREATMENT WELLS CHEMICAL VALUES s (DATA FOR TAOLE 5-52)~ s-9- Sample Sample j Date Number Location Analvte Result Units Comments E 06/02/86 769801 Well WT-1 fluoride 16.10 ppm ~ 06/30/86 796776 -Well WT-1 fluoride 18.01 ppm E 08/04/86 805150 Well WT-1 fluoride 69.59 ppm O 09/03/86 759022 Well WT-1 fluoride 0.12 ppa 09/29/86 804509 Well WT-1 fluoride 34.75 ppm -5 11/03/86 791868 Well WT-1 fluoride 46.74 ppa 1 12/01/86 815533 Well WT-1 fluoride 55.77 ppm 12/30/86 815603 Well WT-1 fluoride 51.70 ppm j 02/02/87 815673 'Well WT-1 fluoride 31.89 ppm z. 03/02/87 815806 Well WT-1 fluoride 16.52 ppm G 03/30/87 816074 Well WT-1 fluoride 10.61 ppm 04/29/87 816422 Well WT-1 fluoride 9.63 ppm E 05/27/87 816603 Well WT-1 fluoride 8.14 ppm y 06/22/87 816883 Well WT-1 fluoride 6.88 ppm ( 08/03/87 817199 Well WT-1 fluoride 7.89 ppm R 08/31/87 817599 Well WT-1 fluoride 6.84 ppm 1 09/28/87 817825 Well WT-1 fluoride 9.15 ppm 2: 10/26/87 818096 Well WT-1 fluoride 14.39 ppm 3 11/18/87 818391 Well WT-1 fluoride 15.16 ppm { 01/04/88 818734 Well WT-1 fluoride 18.92 ppm E 02/01/88 819086 Well WT-1 fluoride 15.06 ppm EL 02/29/88 819371 Well WT-1 fluoride 14.38 ppm g 03/28/88 819637 Well WT-1 fluoride 13.04 ppm N 04/25/88 858021 Well WT-1 fluoride 16.27 ppa D 05/23/88 820247 Well WT-1 fluoride 15.41 ppm DP 06/20/88 820464 Well WT-1 fluoride 8.41 ppa 08/01/88 820789 Well WT-1 fluoride 16.26 ppm 08/29/88 821120 Well WT-1 fluoride 22.16 ppa 09/26/88 821391 Well WT-1 fluoride 19.58 ppa 10/19/88 821689 Well WT-1 fluoride 14.08 ppm 11/14/88 822016 Well WT-1 fluoride 13.31 ppa 01/09/89 822242 Well WT-1 fluoride 15.23 ppa 01/25/89 834999 Well WT-1 fluoride 16.75 ppa 02/06/89 822748 Well WT-1 fluoride 15.71 ppm ? 02/20/89 701867 Well WT-1 fluoride 17.67 ppm 4 03/06/89 823015 Well WT-1 fluoride 14.99 ppa = 03/20/89 704715 Well WT-1 fluoride 14.19 ppm 7 04/03/89 318664 Well WT-1 fluoride 13.93 ppa 's - 04/19/89 704872 Well WT-1 fluoride 11.95 ppa 05/01/89 322570 Well WT-1 fluoride 15.07 ppm i l

. Pag 2-3 of 21 GE-WIIJfINGTON WASTE TREATMENT WELLS CHEMICAL VALUES g (DATA FOR TABLE 5-52) s 2-Sample Sample ( Date Number Location Analvte Result _ Units Comments E 05/15/89 '324757 Well WT-1 fluoride 12.80 ppm ~- 05/30/89 326023 Well WT-1 fluoride 10.53 ppm E 06/12/89 713314 Well WT-1 fluoride 13.06 ppm 0 06/26/89 329768 Well WT-1 fluoride 14.29 ppm E 07/10/89 332161 Well WT-1 fluoride 13.48 ppm 3 07/24/89 334081 Well WT-1 fluoride 16.23 ppm 1 08/22/89 335174 Well WT-1 fluoride 17.39 ppm 5 09/11/89 336056 Well WT-1 fluoride 14.14 ppm E 09/20/89 338839 Well WT-1 fluoride 13.68 ppm E-10/02/89 340128 Well WT-1 fluoride 10.87 ppm ( 10/18/89 343956 Well WT-1 fluoride 7.29 ppm 10/20/89 714620 Well WT-1 fluoride 7.67 ppm E 10/20/89 714622 Well WT-1 fluoride 7.93 ppa 10/20/89 714623 Well WT-1 fluoride 8.36 ppm 10/31/89 849550 Well WT-1 fluoride 8.86 ppm i 11/01/89 346336 Well WT-1 fluoride 9.02 ppm E 11/03/89 849552 Well WT-1 fluoride 11.20 ppm = 11/14/89 849558 Well WT-1 fluoride 9.40 ppm 3 01/26/83 346887 Well WT-1 ammonia 4.57 ppm { 02/16/83 346775 Well WT-1 ammonia 0.54 ppm E 03/09/83 458397 Well WT-1 ammonia 0.22 ppm EL 04/06/83 464901 Well WT-1 ammonia 0.47 ppm g 05/18/83 472858 Well WT-1 ammonia 0.82 ppm N 06/23/83 488616 Well WT-1 ammonia 0.36 ppm U 07/24/83 495111 Well WT-1 ammonia 0.34 ppe D 08/20/83 498277 Well WT-1 ammonia 0.36 ppm P 09/22/83 505355 Well WT-1 ammonia 0.51 ppm 10/21/83 498525 Well WT-1 ammonia 2.92 ppm 12/19/83 518499 Well WT-1 ammonia NO SAMPLE - WELL DAMAGED 01/05/84 541621 Well WT-1 ammonia 2.33 ppm 02/18/84 548583 Well WT-1 ammonia 0.36 ppm 03/24/84 564941 Well WT-1 ammonia 9.36 ppa 04/28/84 578904. Well WT-1 ammonia 0.18 ppa 05/24/84 580403 Well WT-1 ammonia 0.07 ppm 2 06/28/84 580374 Well WT-1 ammonia 0.36 ppm 07/27/84 602527 Well WT-1 ' ammonia D.08 ppm 08/30/84 607709 Well WT-1 ammonia 0+0B ppm 7 09/27/84 602842 Well WT-1 ammonia 0.55 ppa 10/24/84 578079 Well WT-1 ammonia 2.37 ppa 11/06/84 626428 Well WT-1 ammonia 2.01 ppa ~... -.

Page'4 of 21 'GE-WIIMINGTON WASTE TREATMENT.WF4LS CHEMICAL VALUES x (DATA FOR TA@LE 5-52) E. Sample Sample ( Date Number Location Analyte Result Units Comments E 12/11/84 626570 Well WT-1 ammonia 9.32 ppm ~ 01/14/85 633383 Well WT-1 ammonia 0.12 ppm E O2/11/85 647869 Well WT-1 ammonia 0.26 ppm O 03/04/85 650901 Well WT-1 ammonia 0.60 ppm E' 04/01/85 651240 Well WT-1 ammonia 1.08 ppm 55 05/06/85 666233 Well WT-1 ammonia 1.87 ppm E 06/03/85 675399 Well WT-1 ammonia 1.08 ppm 4 07/01/85 682435 Well WT-1 ammonia 0.61 ppm E 08/05/85. 688243 Well WT-1 ammonia 0.72 ppm {. 09/03/85 687539 Well WT-1 ammonia 0.67 ppm g 09/30/85 705754 Well WT-1 ammonia 1.86 ppm 11/04/85 709281 Well-WT-1 ammonia 2.42 ppm E 12/02/85 709364 Well WT-1 ammonia 2.64 ppa 12/31/85 725261 Well WT-1 ammonia 0.50 ppm (, 02/05/86 727976 Well WT-1 ammonia 1.63 ppm 03/03/86 728850 Well WT-1 ammonia <0.10 ppm E 04/02/86 739255 Well WT-1 ammonia 335.53 ppe a: 05/05/86 740056 Well WT-1 ammonia 345.11 ppm %~ 06/02/86 769805 Well WT-1 ammonia 80.48 ppm [ 06/30/86 796780 Well WT-1 ammonia 330.38 ppm E 08/04/86 805154 Well WT-1 ammonia 312.52 ppm 2L 09/03/86 759027 Well WT-1 ammonia 98.19 ppm g 09/29/86 804513 Well WT-1 ammonia 170.34 ppm N 11/03/86 791872 Well WT-1 ammonia 155.47 ppm 2 12/01/86 815531 Well WT-1 ammonia 69.17 ppm D 12/30/86 815601 Well WT-1 ammonia 67.05 ppm 9 02/02/87 815671 Well WT-1 ammonia 125.15 ppa 03/02/87 815804 Well WT-1 ammonia 115.19 ppm 03/30/87 816072 Well WT-1 ammonia 69.59 ppm 04/29/87 816420 Well WT-1 ammonia 62.19 ppa 05/27/87 816601 Well WT-1 ammonia 75.70 ppa 06/22/87 816881 Well WT-1 ammonia 81.67 ppa 08/03/87 817197 Well WT-1 ammonia 43.92 ppa 08/31/87 817597 Well WT-1 ammonia 51.98 ppa p 09/28/87 817823 Well WT-1 ammonia 41.99 ppm y 10/26/87 818094 Well WT-1 ammonia 34w57 ppa 11/18/87 818389 Well WT-1 ammonia 28v53 ppa [ 01/04/88 818732 Well WT-1 ammonia 18.79 ppa 02/01/88 819084 Well WT-1 ammonia 22.44 ppm E 02/29/88 819369 Well WT-1 ammonia 21.52 ppm

Pags 5 of 21 GE ~.7IIJtINGTON LASTE TREATMENT GLLS CHEMICAL VALUES g. (DATA FOR TABLE 5-52) 2 Sample Sample

g Date Number Location Analvte Result Units Comments E'

03/28/88 819635 Well WT-1 ammonia 18.61 ppm L' 04/25/88 858020 Well WT-1 ammonia 15.60 ppm E 05/23/88 820245 Well WT-1 ammonia 12.11 ppm o~ 06/20/88 820462 Well WT-1 ammonia 6.13 ppm 2 08/01/88 820787 Well WT-1 ammonia 5.98 ppm 5 08/29/88 821118 Well WT-1 ammonia 6.55 ppm 09/26/88 821389 Well WT-1 ammonia 1.61 ppm 4 10/19/88 821687 Well WT-1 ammonia 9.05 ppm j 11/14/88 822014 Well WT-1 ammonia 7.39 ppm z. 01/09/89 822240 Well WT-1 ammonia 5.96 ppm g 01/25/89 834998 Well WT-1 ammonia 7.85 ppm w O2/06/89 822746 Well WT-1 ammonia 4.21 ppm E 02/20/89 701865 Well WT-1 ammonia 4.93 ppm 3: 03/06/89 823013 Well WT-1 ammonia 3.22 ppm 6 03/20/89 704716 Well WT-1 ammonia 2.06 ppm 4-04/03/89 318662 Well WT-1 ammonia 1.97 ppm E 04/19/89 704870 Well WT-1 ammonia 3.93 ppm m 05/01/89 322568 Well WT-1 ammonia 1.54 ppm 3 05/15/89 324755 Well WT-1 ammonia 0.57 ppm { 05/30/89 326021 Well WT-1 ammonia 1.27 ppm E 06/12/89 713312 Well WT-1 ammonia 3.15 ppm 2L 06/26/89 329766 Well WT-1 ammonia 2.72 ppm g 07/10/89 332159 Well WT-1 ammonia 0.85 ppm N 07/24/89 334079 Well WT-1 ammonia 3.00 ppm 2 08/22/89 335172 Well WT-1 ammonia 0.50 pra ); 09/11/89 336054 _ Well WT-1 ammonia 0.66 ppm P 09/20/89 338837 Well WT-1 ammonia 3.83 ppm 10/02/89 340126 Well WT-1 ammonia 5.85 ppm 10/18/89 343954 Well WT-1 ammonia 8.25 ppm 10/31/89 849550 Well WT-1 ammonia 9.31 ppa 01/26/83 346887 Well WT-1 nitrate 51.00 ppa 02/16/83 346775 Well WT-1 nitrate 7.25 ppm 03/09/83 458397 Well WT-1 nitrate 26.50 ppm 04/06/83 464901 Well WT-1 nitrate 44.00 pps 05/18/83 472858 Well WT-1 nitrate 0.13 ppm y-06/23/83 488616 Well WT-1 nitrate 29.00 ppa w 07/24/83 495111 Well WT-1 nitrate 47.60 ppa [ 08/20/83 498277 Well WT-1 nitrate 1.99 ppa 's 09/22/83 505355 Well WT-1 nitrate 18.50 ppm 10/21/83 498525 Well WT-1 nitrate 17.20 ppa ~

Page 6 ef 21 GE-WIIMINGTON CASTE TREATMENT WELLS CHEMICAL VALUES L (DATA FOR TABLE 5-52) g 3-Sample Sample (- Date Number Location Analvte Res. ult Units Comments .12/19/83 518499 Well WT-1 nitrate NO SAMPLE - WELL DAMAGED 01/05/84 541621 Well WT-1 nitrate 22.00 ppm E 02/18/84 548583 Well WT-1 nitrate 18.00 ppm o 03/24/84 564941 Well WT-1 nitrate 18.75 ppm 2 04/28/84 578904 Well WT-1 nitrate 13.80 ppm Ei 05/24/84 580403' Well WT-1 nitrate 30.00 ppm 1 06/28/84 580374 Well WT-1 nitrate 25.00 ppm 4 07/27/84 602527 Well WT-1 nitrate 23.34 ppm E 08/30/84 607709 Well WT-1 nitrate 25.80 ppm {. 09/27/84 602842 Well WT-1 nitrate 0.02 ppm G 10/24/84 578079 Well WT-1 nitrate 17.59 ppm 11/06/84 626428 Well WT-1 nitrate 18.63 ppm E 12/11/84 626570 Well WT-1 nitrate 38.22 ppm 01/14/85 633383 Well WT-1 nitrate 49.75 ppm 02/11/85 647866 Well WT-1 nitrate 13.44 ppm 4-03/04/85 650903 Well WT-1 nitrate 27.02 ppm E 04/01/85 651238 Well WT-1 nitrate 16.95 ppn d 05/06/85 666232 Well WT-1 nitrate 10.64 ppm 3 06/03/85 675395 Well WT-1 nitrate 10.61 ppm ( 07/01/85 682431 Well WT-1 nitrate 15.95 ppm R 08/05/85 688239 Well WT-1 nitrate 9.23 ppm E 09/03/85 687535 Well WT-1 nitrate 18.46 ppm g 09/30/85 705755 Well WT-1 nitrate 9.61 ppe N 11/04/85 709283 Well WT-1 nitrate 38.33 ppm D 12/02/85 709366 Well WT-1 nitrate 92.68 ppm D 12/31/85 725257 Well WT-1 nitrate 42.72 ppm 9 02/05/86 727972 Well WT-1 nitrate 38.58 ppm 03/03/86 728846 Well WT-1 nitrate 50.52 ppa 04/02/86 739251 Well WT-1 nitrate 44.51 ppm 05/05/86 740052 Well WT-1 nitrate 148.81 ppm 06/02/86 769801 Well WT-1 nitrate 3.30 ppm 06/30/86 796776 Well WT-1 nitrate 451.58 ppm 08/04/86 805150 Well WT-1 nitrate 1055.85 ppm 09/03/86 759022 Well WT-1 nitrate 106.09 ppa } 09/29/86 804509 Well WT-1 nitrate 519.69 ppm q 11/03/86 791868 Well WT-1 nitrate 531.87 ppm 12/01/86 815533 Well WT-1 nitrate 270.65 ppm [ 12/30/86 815603 Well WT-1 nitrate 313.36 ppm 's 02/02/87 815673 Well-WT-1 nitrate 215.78 ppm 03/02/87 815806 Well WT nitrate 172.28 ppm =

Page 7 cf 21 GE-WILMINGTON CASTE TREATMENT WELIE CHEMICAL VALUES i (DATA FOR TACLE 5-52) s 2 Sample Sample ( Date Number Location Analyte Result Units Comments E 03/30/87 816074 Well WT-1 nitrate 194.53 ppm 04/29/87_ 816422 Well WT-1 nitrate 55.30 ppm E 05/27/87 816603 Well WT-1 nitrate 158.94 ppm O 06/22/87 816883 Well WT-1 nitrate 63.83 ppm 2 08/03/87 817199 Well WT-1 nitrate 264.22 ppm Ei 08/31/87 817599 Well WT-1 nitrate 90.23 ppm E 09/28/87 817825 Well WT-1 nitrate 88.12 ppm 4 10/26/87 818096 Well WT-1 nitrate 56.97 ppm 11/18/87 818391 Well WT-1 nitrate 32.01 ppm z. 01/04/88 818734 Well WT-1 nitrate 179.21 ppm G O2/01/88 819086 Well WT-1 nitrate 358.62 ppm 02/29/88 819371 Well WT-1 nitrate 471.89 ppm E 03/28/88 819637 Well WT-1 nitrate 260.67 ppm 04/25/88 858021 Well WT-1 nitrate 318.02 ppm 05/23/88 820247 Well WT-1 nitrate 103.05 ppm 4' 06/20/88 820464 Well WT-1 nitrate 41.40 ppm E 08/01/88 820789 Well WT-1 nitrate 38.47 ppm = 08/29/88 821120 Well WT-1 nitrate 37.0? ppm 3 09/26/88 821391 Well WT-1 nitrate 35.40 ppm ( 10/03/88 842805 Well WT-1 nitrate 23.23 ppm E 10/10/88 842830 Well WT-1 nitrate 22.28 ppm E. 10/17/88 842889 Well WT-1 nitrate 11.07 ppm g 10/19/88 821689 Well WT-1 nitrate 9.79 ppm N 10/27/88 860122 Well WT-1 nitrate 10.67 ppm 2 11/02/88 834907 Well WT-1 nitrate 6.66 ppm D 11/09/88 860138 Well WT-1 nitrate 8.91 ppm 11/14/88 822016 Well WT-1 nitrate 3.67 ppm 11/16/88 860158 Well WT-1 nitrate 7.55 ppm 11/30/88 860167 Well WT-1 nitrate 11.44 ppm 12/07/88 860188 Well WT-1 nitrate 12.97 ppm 12/21/88 834944 Well WT-1 nitrate 21.89 ppe 01/04/89 833148 Well WT-1 nitrate 29.11 ppm 01/09/89 822242 Well WT-1 nitratt 34.63 ppu 01/11/89 834975 Well WT-1 nitrate 38.64 ppm 01/25/89 634999 Well WT-1 nitrate 64.26 ppa 02/06/89 822748 Well WT-1 nitrate 96.83 ppm 02/20/89 701867 Well WT-1 nitrate 39.88 ppm 03/06/89 823015 Well WT-1 nitrate 105.40 ppa 03/20/89 704715 Well WT-1 nitrate 54.99 ppm 04/03/89 318664 Well WT-1 nitrate 26.51 ppm

Paga 8 of 21' GE-3IIEIINGTON CASTE TREATMENT WELLS CHEMICAL VALUES x (DATA FOR TACLE 5-52) S. Sample Sample (_ Date Number Location Analvte Result Units Comments E 04/19/89 704872 Well WT-1 nitrate 28.77 ppa ~ 05/01/89 322570 Well WT-1 nitrate 37.31 ppm E 05/15/89 324757 Well WT-1 nitrate 25.17 ppm O 05/30/89 326023 Well WT-1 nitrate 27.93 ppn 2 06/12/89 713314 Well WT-1 nitrate 23.42 ppm 2 06/26/89 329768 Well WT-1 nitrate 14.53 ppm 5. 07/10/89 332161 Well WT-1 nitrate 21.26 ppm 4 07/24/89 334081 Well WT-1 nitrate 29.11 ppm E 08/22/89 335174 Well WT-1 nitrate 31.21 ppm ~.g 09/11/89 336056 Well WT-1 nitrate 38.12 ppm G 09/20/89 338839 Well WT-1 nitrate 30.77 ppm 10/02/89 340128 Well WT-1 nitrate 109.81 ppm E 10/18/89 343956 Well WT-1 nitrate 631.21 ppm 3: 10/20/89 714620 Well WT-1 nitrate 470.78 ppm i 10/20/89 714622 Well WT-1 nitrate 432.96 ppm s' 10/20/89 714623 Well WT-1 nitrate 389.92 ppm 3, 10/30/89 849549 Well WT-1 nitrate 199.27 ppm 2: 10/31/89 849550 Well WT-1 nitrate 115.27 ppm 3 11/01/89 346336 Well WT-1 nitrate 120.12 ppm ~ g 11/03/89 849552 Well WT-1 nitrate 27.32 ppm E 11/07/89 849554 Well WT-1 nitrate 99.90 ppm E. 11/10/89 849556 Well WT-1 nitrate 102.38 ppm g 11/13/89 349404 Well WT-1 nitrate 98.99 ppm N 11/14/89 849558 Well WT-1 nitrate 102.38 ppm 11/17/89 702273 Well WT-1 nitrate 86.99 ppm )s 12/01/89 352404 Well WT-1 nitrate 120.50 ppm 9 12/13/89 354982 Well WT-1 nitrate 48.64 ppm 01/26/83 346888 Well WT-2 fluoride 0.93 ppm 02/16/83 346764 Well WT-2 fluoride 0.10 ppm 03/09/83 458383 Well WT-2 fluoride 0.14 ppa 04/06/83 464902 Well WT-2 fluoride 0.40 ppa 05/18/83 472859 Well WT-2 fluoride 0.16 ppm 06/23/83 488617 Well WT-2 fluoride 0.18 ppm 07/24/83 495112 Well WT-2 fluoride 0.24 ppm y 08/20/83 498288 Well WT-2 fluoride 0.10 ppm y 09/22/83 505301 Well WT-2 fluoride 0.20 ppa w 10/21/83 498529 Well WT-2 fluoride 0.44 ppm 7 12/07/83 518517 Well WT-2 fluoride 0.25 ppa 12/19/83 518496. Well WT-2 fluoride <0.10-ppm 01/05/84 541625 Well WT-2 fluoride <O.10 ppe

= Page 9. cf 21 GE-WIIMINGTON WASTE TREATMENT WELLS CHEMICAL VALUES g (DATA FOR TACLE 5-52) g 3 Sample Sample j Date Number Location Analvte Result _ Units Comments E 02/18/84 548585 Well WT-2 fluoride 0.19 ppe 03/24/84 564943 Well WT-2 fluoride 0.43 ppa

E 04/28/84 578905 Well WT-2 fluoride 0.18 ppm o

05/24/84 580405 Well'WT-2 fluoride 0.26 ppm 2 06/28/84 580375 Well WT-2 fluoride 0.40 ppm 07/27/84 602530 Well WT-2 fluoride <0.01 ppm 1 08/30/84 607710 Well WT-2 fluoride 0.12 ppm 4 09/27/84 602832 Well WT-2 fluoride 0.06 ppm 10/24/d4 578080 Well WT-2 fluoride 0.07 ppm {. 11/06/84 626430 Well WT-2 fluoride 0.15 ppm g 12/11/84 626574 Well WT-2 fluoride 0.08 ppm 01/14/85 633379 Well WT-2 fluoride 0.07 ppm E 02/11/85 647870 Well WT-2 fluoride 0.21 ppm 3: 03/04/85 650907 Well WT-2 fluoride 0.17 ppm ( 04/01/85 651245 Well WT-2 fluoride 0.11 ppm R 05/06/85 666227 Well WT-2 fluoride 0.16 ppm 1 06/03/85 677727 Well WT-2 fluoride 0.06 ppm m 07/01/85 682469 Well WT-2 fluoride 0.08 ppm 3 08/05/85 688281 Well WT-2 fluoride 0.04 ppm { 09/03/85 687567 Well WT-2 fluoride 0.38 ppm E 09/30/85 705783 Well WT-2 fluoride 0.07 ppm E 11/04/85 709412 Well WT-2 fluoride 0.12 ppm g 12/02/85 718923 Well WT-2 fluoride 0.11 ppm N 12/31/85 725293 Well WT-2 fluoride 0.06 ppm 02/05/86 727980 Well WT-2 fluoride 0.13 ppm D 03/03/86 728883 Well WT-2 fluoride 0.04 ppm 9 04/02/86 739261 Well WT-2 fluoride 0.30 ppt 05/05/86 740060 Well WT-2 fluoride 1.02 ppm 06/02/86 769809 Well WT-2 fluoride 0.01 ppm 06/30/86 796784 Well WT-2 fluoride 0.17 ppa 08/04/86 805159 Well WT-2 fluoride 0.29 ppa 09/03/86 759031 Well WT-2 fluoride Q.22 ppa 09/29/86 804519 Well WT-2 fluoride 0.53 ppm 11/03/86 791880 Well WT-2 fluoride U.43 ppa 12/01/86 815538 Well WT-2 fluoride 0.75 ppm q 12/30/86 815608 Well WT-2 fluoride 0.19 ppm u 02/02/87 815678 Well WT-2 fluoride 9.23 pps [ 03/02/87 815811 Well WT-2 fluoride 0.28 ppa 03/30/87 816079 Well WT-2 fluoride 0.20 ppm 04/29/87 816427 Well WT-2 fluoride 0.20 ppm

. Pag 3 10 of 21 GE ~.IIJfINGTON WASTE TREATMENT WELLS CHEMICAL VALUES g (DATA FOR TA'iLE 5-52) 3 Sample Sample 3 Date Number Location Analvte Result Units Comments S 05/27/87 816608 Well WT-2 fluoride 0.24 ppm 06/22/87 816888 Well WT-2 fluoride 0.17 ppm E 08/03/87 817204 Well WT-2 fluoride 0.15 ppm o 08/31/87 817604 Well WT-2 fluoride 0.09 ppm 2 09/28/87 817830 Well WT-2 fluoride 0.20 ppm 10/26/87 818101 Well WT-2 fluoride 0.25 ppm E 11/18/87 818396 Well WT-2 fluoride 0.31 ppm 4 01/04/88 818739 Well WT-2 fluoride 0.14 ppm E O2/01/88 819091 Well WT-2 fluoride 0.22 ppm ~ ~ 02/29/88 819366 Well WT-2 fluoride 0.20 ppm S 03/28/88 819642 Well WT-2 fluoride 0.71 ppm 4 04/25/88 819932 Well WT-2 fluoride 0.28 ppm E 05/23/88 820252 Well WT-2 fluoride 0.32 ppm R 06/20/88 820469 Well WT-2 fluoride 2.11 ppm { 08/01/88 820794 Well WT-2 fluoride 0.51 ppm R 08/29/88 821125 Well WT-2 fluoride 0.18 ppm E 09/26/88 821396 Well WT-2 fluoride 0.45 ppm = 10/19/88 821694 Well WT-2 fluoride 0.31 ppm R 11/14/88 822021 Well WT-2 fluoride 0.14 ppm [ 01/09/89 822247 Well WT-2 fluoride 1.21 ppm E O2/06/89 822753 Well WT-2 fluoride 0.25 ppm 1 03/06/89 823020 Well WT-2 fluoride 0.33 ppm g 04/03/89 318667 Well WT-2 fluoride 0.36 ppm N 05/01/89 322573 Well WT-2 fluoride 0.24 ppm D 05/30/89 326028 Well WT-2 fluoride 0.92 ppm ); 06/26/89 329771 Well WT-2 fluoride 0.17 ppm P 07/24/89 334084 Well WT-2 fluoride 0.23 ppm 08/22/89 335177 Well WT-2 fluoride 0.23 ppm 09/11/89 336059 Well WT-2 fluoride 0.29 ppm 10/02/89 340131 Well WT-2 fluoride 0.17 ppa 11/01/89 346339 Well WT-2 fluoride 0.14 ppa 12/04/89 351662 Well WT-2 fluoride 0.12 ppm 01/26/83 346888 Well WT-2 ammonia 5.16 ppm 02/16/83 346764 Well WT-2 ammonia 6.44 ppm y 03/09/83 458383 Well WT-2 ammonia 0.46 ppm 4 04/06/83 464902 Well WT-2 ammonia 0.83 ppe v. 05/18/83 472859 Well WT-2 ammonia 1.60 ppm 7 06/23/83 488617 _ Well WT-2 ammonia 1.20 ppn 07/24/83 495112 Well FT-2 ammonia 0.85 ppe 08/20/83 498288 Well WT-2 ammonia 2.10 ppa

Page 11 of 21 GE-WIIMINGTON WASTE TREATMENT WELLS CHEMICAL VALUES x (DATA FOR TABLE 5-52) 3-Sample Sample ~j Date Number Location Analvte Result _ Units Comments E 09/22/83 505301 Well WT-2 ammonia 1.94 ppm 10/21/83 498529 Well WT-2 ammonia 3.83 ppm B 12/07/83 518517 Well WT-2 ammonia 0.95 ppm cr 12/19/83 518496 Well WT-2 ammonia 0.36 ppm 2 01/05/84 541625 Well WT-2 ammonia 2.40 ppm 5] 02/18/84 548585 Well WT-2 ammonia 1.60 ppm 1 33/24/84 564943 Well WT-2 ammonia 1.33 ppm 4 04/28/84 578905 Well WT-2 ammonia C.67 ppa E 05/24/84 580405 Well WT-2 ammonia 1.34 ppa {. 06/28/84 580375 Well WT-2 ammonia 0.51 ppm g 07/27/84 602530 Well WT-2 ammonia 0.67 ppm w 08/30/84 607710 Well WT-2 ammonia 0.19 ppm E O'/27/G4 602832 Well WT-2 ammonia 1.13 ppm 3: 10/24/84 578080 Well WT-2 ammonia 0.98 ppm (, 11/06/84 626430 Well WT-2 ammonia 0.31 ppm T 12/11/84 626574 Well WT-2 ammonia 0.82 ppm 1 01/14/85 633379 Well WT-2 ammonia 0.61 ppm = 02/11/85 647873 Well WT-2 ammonia 0.61 ppm 3 03/04/85 650909 Well WT-2 ammonia 0.26 ppm { 04/01/85 651243 Well WT-2 ammonia 0.14 ppm E 05/06/85 666228 Well WT-2 ammonia 1.29 ppm E 06/03/85 677728 Well WT-2 ammonia 1.01 ppa g 07/01/85 682470 Well WT-2 ammonia 1.63 ppm N 08/05/85 688282 Well WT-2 ammonia 2.25 ppm 2 09/03/85 687568 Well WT-2 ammonia 0.37 ppm ); 09/30/85 705784 Well WT-2 . ammonia 0.87 ppm P 11/04/85 709413 Well WT-2 ammonia 0.35 ppm 12/02/85 718925 Well WT-2 ammonia 0.74 ppm 12/31/85 725292 Well WT-2 ammonia 0.19 ppm 02/05/86 727979 Well WT-2 ammonia 1.29 ppa 03/03/86 728882 Well WT-2 ammonia <9.10 ppm 04/02/86 739259 Well WT-2 ammonia 1.98 ppm 05/05/86 740059 Well WT-2 ammonia 1.89 ppm 06/02/86 769808 Well WT-2 ammonia 0.64 ppm g 06/30/86 796783 Well WT-2 ammonia 2.92 ppm y 08/04/86 805157 Well WT-2 ammonia 2.54 ppa u 09/03/86 759030 Well WT-2 ammonia 2.45 ppm [' 09/29/86 804518 Well WT-2 ammonia 3.83 ppm 11/03/86 791877 Well WT-2 ammonia 1.82 ppm 12/01/86 815536 Well WT-2 ammonia 2.01 ppm ~. _.

'Page 12 of 21-GE-WIIRINGTON WASTE TREATMENT WELIS CHEMICAL VALUES x (DATA FOR TABLE 5-52) 2 Sample Sample y Date Number-Location Analvte Result Units Comments E 12/30/86 815606 Well WT-2 ammonia 1.71 ppa ~. 02/02/87' 815676 Well WT-2 ammonia 1.98 ppm E 03/02/87 815809 Well WT-2 ammonia 1.75 ppu o $? 03/30/87 816077 Well WT-2 ammonia 0.94 ppm 04/29/87 816425 Well WT-2 ammonia 1.11 ppm 5 05/27/87 816606 Well WT-2 ammonia 2.79 ppm 1 06/22/87 816886 Well WT-2 ammonia 9.53 ppm 4 E 08/03/87 817202 Well WT-2 ammonia 1.36 ppm Z. 08/31/87 817602 Well WT-2 ammonia 2.62 ppm 3 09/28/87 817828 Well WT-2 ammonia 1.74 ppm 2 10/26/87 813099 Well WT-2 ammonia 2.57 ppm E 11/18/87 818394 Well WT-2 ammonia 3.70 ppm 01/04/88 818737 Well WT-2 ammonia O.87 ppm 3: 02/01/88 819089 Well WT-2 ammonia O.78 ppm ( O2/29/88 819364 Well WT-2 ammonia 1.69 ppm R 03/28/88 819640 Well WT-2 ammonia 2.21 ppm E 04/25/88 819930 Well WT-2 ammonia O.49 ppm m 05/23/88 820250 Well WT-2 ammonia 7.16 ppm 06/20/88 820467 Well WT-2 ammonia 5.23' ppm ~ g 08/01/88 820792 Well WT-2 ammonia 0.60 ppm E 08/29/88 821123 Well WT-2 ammonia O.85 ppm 1 09/26/88 821394 Well WT-2 ammonia O.88 ppm o$ 10/19/88 821692 Well WT-2 ammonia 1.50 ppm 2 11/14/88 822019 Well WT-2 ammonia 2.16 ppm D 01/09/89 822245 Well WT-2 ammonia 0.54 ppm 02/06/89 822751 Well WT-2 ammonia O.73 ppm 03/06/89 823018 Well WT-2 ammonia <0.49 ppm 04/03/89 318665 Well WT-2 ammonia 0.51 ppm 05/01/89 322571 Well WT-2 ammonia <O.49 ppm 05/30/89 326026 Well WT-2 ammonia 1.35 ppm 06/26/89 329769 Well WT-2 ammonia 1.50 ppm 07/24/89 334082 Well WT-2 ammonia 1.10 ppa 08/22/89 335175 Well WT-2 ammonia 1.22 ppm 09/11/89 336057 Well WT-2 ammonia 1.34 ppm y 10/02/89 340129 Well WT-2 ammonia 1.97 ppm Q 13/01/89 346337 Well WT-2 ammonia 2.37 ppe v. 12/04/89 351660 Well WT-2 ammonia 1.75 ppm 7 01/26/83 346888 Well WT-2 nitrate 28.10 ppa O2/16/83 346764 Well WT-2 nitrate 1.58 ppa 03/09/83 458383 Well WT-2 nitrate 28.50 ppm

y. [4 -Paga 13 of21'. GE-WIIMINGTON WASTE TREATMENT WELLS CHEMICAL VALUES (DATA FOR TABLE 5-52) .g^; 3 Sample-Sample Date Nurber __.-Location Analvte Result Units Comments E ~. ',02 Wo11.WT-2

nitrate 40.00 ppm

~. 04/06/83 4 05/18/83 472859 Well WT-2 nitrate 5.30 ppm .E 06/23/83 488617 ~Well'WT-2 nitrate 1.70 ppm .o E' 07/24/83 495112 Well WT-2 nitrate 5.30 ppm 08/20/83 498288 Well.WT-2 nitrate ~ 0.79 ppm @~ 09/22/83 505301 Well WT-2 nitrate 3.56' ppm E 10/21/83 498529 Well WT-2 nitrate 9.30 ppm 4 12/07/83 518517 Well'WT-2 nitrate <0.20 ppm j 12/19/83 518496 Well WT-2 nitrate 11.00 ppm p. d 01/05/84 541625 Well WT-2 nitrate 1.50 ppm 4 02/18/84 548585 Well WT-2 nitrate 18.20 ppm E 03/24/84 564943 Well WT-2 nitrate 15.50 ppm R 04/28/84 578905 Well WT-2 nitrate 5.85 ppm 05/24/84 580405 Well WT-2 nitrate 12.50 ppm { 06/28/84 580375 Well WT-2 nitrate 12.00 ppm y 07/27/84 602530 Well WT-2 nitrate 1.26 ppm E 08/30/84 607710 Well WT-2 nitrate 1.03 ppm = 09/27/84 602832 Well WT-2 nitrate 0.35 ppm 3 ~ 10/24/84 578080 Well WT-2 nitrate 2.61 ppm q 11/06/84 626430 Well WT-2 t*' rate 3.98 ppm E E, 12/11/84 626574 Well WT-2 itrate 37.07 ppm e 01/14/85 633379 Well WT-2 nitrate 30.16 ppm El 02/11/85 647870 Well WT-2 nitrate 7.91-ppm 2 03/04/85 650907 Well WT-2 nitrate 24.00 ppm ls 04/01/85 651245-Well WT-2 nitrate 18.97 ppm i i 05/06/85 666227 Well WT-2 nitrate 17.28 ppm 06/03/85 677727 Well WT-2 nitrate 15.95 ppm 07/01/85 682469 Well WT-2 nitrate 9.48 ppm 08/05/85 688281 Wall WT-2 nitrate 6.97 ppm 09/03/85 687567 Well WT-2 nitrate 1.43 ppm 09/30/85 705783 Well WT-2. ~ nitrate 30.54 ppm 11/04/85 709412 Well WT-2 nitrate 109.81 ppm 12/02/85 718923 Well WT-2 nitrate 45.65 ppm 12/31/85 725293 Well WT-2 nitrate 52.47 ppm y 02/05/86 727980 Well WT-2 nitrate 44.67 ppm y 03/03/86 728883 Well WT-2 nitrate 77.33 ppm .w 04/02/86 739261-Well-WT-2 nitrate 79.28 ppm p 05/05/86 740060 Well.WT-2 nitrate 50.61 ppm 06/02/86 769809 Well WT-2 nitrate 7.68 ppm 06/30/86 796784 Well WT-2 nitrate 42.72 ppm

Paga 14 of.21 GE-WIIMINGTON WASTE-TREATMENT WELLS CHEMICAL VALUES r _(DATA FOR_ TABLE 5-52)- .g g -Sample [ Sample _[ 'Date Number Location Analvte Result Units Comments E 08/04/86 805159 Well WT-2 nitrate 4.52 ppm ~ 09/03/86 759031 Well WT-2 nitrate 3.35 ppm E o 09/29/86 804519 Well WT-2 nitrate 3.59 ppm 2' 11/03/86 791880- Well WT-2 nitrat'e 39.64 ppm 12/01/86 815538 Well WT-2 nitrate 34.98 ppm 2 12/30/86-~815608 Well WT-2 nitrate 14.61 ppm 1 02/02/87 815678 'Well WT-2 nitrate 24.78-ppm 4E 03/02/87 815811 Well WT-2 nitrate 32.69 ppm - :1 - 03/' $ 0/87 816079 Well WT-2 nitrate 24.40 ppm 04/ 9/87 816427 Well WT-2 nitrate 31.21 ppm 0 05/27/87 816608 Well WT-2 nitrate 13.78 ppm E 06/22/87 816888 Well WT-2 nitrate 2.31 ppm R 08/03/87 817204 Well WT-2 nitrate 28.30 ppm 08/31/87 817604~ Well WT-2 nitrate-1.89 ppm .{ 09/28/87 817830 Well WT-2 nitrate 11.36 ppm e i 10/26/87 818101 Well WT-2 nitrate 3.47 ppm 11/18/87 818396 Well WT-2 nitrate 53.48 ppm = 01/04/88 818739 Well WT-2 nitrate 0.91 ppm .a 02/01/88 819091 Well WT-2 nitrate 9.68 ppm { 02/29/88 819366 Well WT-2 nitrate 54.37 ppm E1 03/28/88 819642 Well WT-2 nitrate 48.59 ppm 04/25/88 819932 Well WT-2 nitrate 55.53 ppm g 05/23/88 820252 Well WT-2. nitrate 61.12 ppm N2 06/20/88 820469 Well.WT-2 nitrate 27.67 ppm D 08/01/88 820794 Well WT-2 -nitrate 35.57. ppm 08/29/88 821125 Well WT nitrate 8.52 ppm 09/26/88 821396 Well WT-2 nitrate 16.24 ppm 10/19/88 821694 Well WT-2 nitrate 2.27 ppm 11/14/88 822021 Well WT-2 nitrate 1.73 ppm 01/09/89 822247 Well-WT-2 nitrate 157.41 ppm 02/06/89 822753 Well WT-2 nitrate 79.76 ppm 03/06/89 823020 Well WT-2 nitrate 144.36 ppm 04/03/89 318667 Well WT-2 nitrate 89.64 ppm 05/01/89 322573 Well WT-2 . nitrate 53.76 ppm y 05/30/89 326028 Well WT-2 nitrate 40.95 ppm q 06/26/89 329771 Well WT-2 nitrate 23.94 ppm w 07/24/89 334084 Well WT-2 nitrate 10.99 ppm [ 's . ell WT-2 nitrate 1.69 ' ppm 08/22/89 335177 W 09/11/89 336059.Well WT-2 nitrate 1.82 ppm 10/02/89 340131 Well WT-2 nitrate 12.99 -ppm

Paga 15 of'21' GE-WIIJtINGTON WASTE TREATP~ENT WELLS CHEMICAL VALUES .x. (DATA ~FOR TABLE 5-52)- 3 Sample Sample zg: Date Number-Location Analvte' Result Units Comments E 11/01/89 346339 Well WT-2 nitrate -31.72 ppm ~ .12/04/89-351662 Well WT-2, nitrate 18.68 ppm B 01/26/83 346897 Well WT-9. fluoride 0.20 ppm o 02/16/83 346772 'Well WT-9 fluoride 0.10 ppm 2 03/09/83 458390 Well WT-9 fluoride 0.10 ppm i3 04/06/83 464908. Well WT-9 fluoride 0.30 ppm E 05/18/83 472865 Well WT-9 fluoride <0.10 ppm 4 06/23/83 488614 Well WT fluoride. 0.10 ppm EJ 07/24/83 495113 Well WT-9 fluoride 0.14 ppm -{ 08/20/83 498274 Well WT-9 fluoride <0.10 ppm g 09/22/83 505313 Well WT-9 fluoride 0.13 ppm 10/21/83 498521 Well WT-9 fluoride WELL DRY E 12/19/83 518500 Well WT-9 . fluoride WELL DRY R 01/05/84 541700 Well WT-9 fluoride WELL DRY (, 02/18/84 548596 Well WT-9 fluoride

1.52 ppm V

03/24/84 564955 Well WT-9 fluoride WELL DRY d 04/28/84 578902 Well WT-9 fluoride <0.10 ppm = 05/24/84 580412. Well WT-9 fluoride WELL DRY 09/18/84 607689 Well WT-9 fluoride. 0.04 ppm [ 09/27/84 602841 Well WT-9 fluoride 0.03 ppm E 10/24/84 578076 Well WT-9 fluoride. 0.05 ppm E. 11/06/84 626427 Well WT-9 fluoride. 0.07 ppm g 12/11/84 626572 Well WT-9 fluoride 0.05 ppm N. 01/14/85 633376 Well WT-9 fluoride 0.02 ppm 2 02/11/85 647854 Well WT-9 fluoride 0.10 ppm D 03/04/85 650936 Well WT-9' fluoride 0.10 ppm 9 04/01/85 651273. Well WT-9 fluoride 0.10 ppm 05/06/85 666215 Well WT-9 fluoride 0.87' ppm 06/03/85 673600 Well WT-9 fluoride 0.30 ppm 07/01/85 682449 Well WT-9 fluoride 0.45 ppm 08/05/85 688238 Well WT-9 fluoride 0.03 ppm 09/03/85 '687533 Well WT-9 fluoride-1.19 ppm 09/30/85 705750 Well WT-9 fluoride 0.74 ppm 11/04/85 709278 Well WT-9 _ fluoride 0.06. ppm } 12/02/85 709381-Well WT-9 fluoride 0.37 ppm. Q 12/31/85 725256 Well WT-9 fluoride WELL DRY v. 02/05/86 727915 Well WT-9 fluoride WELL DRY [ 03/03/86 733415 Well WT-9 fluoride WELL DRY 06/02/86 769863 Well!WT-9 fluoride WELL' DRY. 06/30/86 796749 Well WT-9 fluoride WELL DRY l m-

Paga 16 of 21' GE-WIIJfINGTON ' WASTE TREATMENT: WELLS CHEMICAL' VALUES x' (DATA FOR TABLE'5-52) E. Sample Sample J-. Date -Number Location Analvte Result Units Comments E 08/04/86 805285 Well!WT-9~ fluoride-WELL DRY' ~ 09/03/86 759035 Well WT-9 . fluoride WELL DRY E 09/29/86 804547 'Well WT-9 fluoride. WELL DRY -Q 11/03/86 791807 Well WT-9 fluoride WELL DRY 12/01/86 815568 Well WT-9 fluoride WELL DRY -3 l 12/30/86 ~ 794742 ~Well WT-9 fluoride 0.05 ppm 4' 815638_.Nell WT-9 fluoride WELL DRY l-01/26/87 02/02/87 815708 Well WT-9 fluoride 0.07 ppm E 03/02/87 815841 Well WT-9 fluoride 0.06 ppm ~.g 03/30/87 816109 Well WT-9 fluoride 0.05 ppm g 04/29/87 816457-Well WT-9 fluoride 0.05 ppm 05/27/87 816638 Well WT-9 ~ fluoride 7.88 ppm E 06/22/87 816918 Well'WT-9 fluoride -6.72 ppm y:. 08/03/87 817234 Well WT-9 fluoride 6.36 ppm ( 08/31/87 817634. Well WT-9 fluoride 5.04 ppm W 09/28/87 817860 Well WT-9 fluoride 8.85 ppm E 10/26/87 818131 Well WT-9 fluoride 14.54 ppm = 11/18/87 818426 Well WT-9 fluoride 16.97 ppm 3 01/04/88 818769 Well WT-9 fluoride 0.05 ppm ~ ;; 02/01/88 819121 Well WT-9 fluoride 12.39 ppm R. 02/29/88 819401 Well WT-9 fluoride 14.37 ppm' E. 03/28/88 819672 Well WT-9 fluoride 9.42 ppm g 04/25/88 819962 Well WT-9 fluoride 18.33 ppm N 05/23/88 820282 Well WT-9 fluoride 14.28 ppm 06/20/88 820499 Well WT-9 fluoride 14.59 ppm ); 08/01/88 820824 Well WT-9 fluoride 16.29 ppm 08/29/88 821155 Well WT-9 fluoride 24.64 ppm 09/26/88 821426 Well WT-9 fluoride WELL DRY 10/19/88 821724 Well WT-9 fluoride WELL DRY 11/14/88 822051 Well WT-9 fluoride WELL DRY 01/09/89 822277 Well WT-9 -fluoride WELL DRY 03/31/89 318729 Well WT-9 fluoride WELL DRY 04/19/89 704884 Well WT-9 fluoride WELL DRY 05/15/89 324762 Well WT-9 fluoride WELL DRY: } 05/26/89 326049 Well WT-9 fluoride WELL DRY q 06/12/89 713307 Well WT-9 fluoride WELL DRY v. 06/23/89 329789 Well.WT-9 fluoride WELL DRY [ 07/10/89 332164 Well WT-9 fluoride WELL DRY 's 07/21/89 334108 Well WT-9 fluoride WELL DRY 08/11/89 335195 Well WT-9 fluoride WELL DRY

w I ~ Paga.17'of 21 .GE-WILMINGTON WASTE TREATMENT WELLS CHEMICAL VALUES (DATA--FOR TABLE 5-52)'- @l 9. Sample Sample ( Date Number Location Analvte Result ' Units ~ Comments E 08/30/89 336077 Well WT-9 fluoride WELL DRY ~ 09/20/89 338842 Well WT-9 fluoride WELL DRY E; 10/02/89 340149 Well WT-9 fluoride 0.06 ppm O 10/18/89 343959 Well'WT-9 -fluoride 0.33 ppm EL 11/01/89 346357 Well WT-9 fluoride 0.09 ppm E} ' 01/26/83 346897 Well WT-9 . ammonia 3.89 ppm E. 02/16/83 346772 Well WT-9 ammonia 0.85 ppm 4 03/09/83 458390 Well WT-9 ammonia 0.22 ppm 04/06/83 464908 Well WT-9 ammonia 0.21 ppm z. 05/18/83 472865 Well WT-9 ammonia 0.72 ppm G 06/23/83 488614 Well WT-9 ' ammonia 0.24 ppm 07/24/83 495113 Well WT-9 ammonia 0.39 ppm E 08/20/83 498274 Well~WT-9 ammonia 0.52 ppm 09/22/83 505313 Well WT-9 ammonia 0.97 ppm i 10/21/83 498521 Well WT-9 ammonia WELL DRY T 12/19/83 518500 Well WT-9 ammonia WELL DRY 3. 01/05/84 541700 Well WT-9 ammonia WELL DRY 02/18/84 548596 Well WT-9 ammonia. 0.36 ppm 3 03/24/84 564955 Well WT-9 ammonia WELL DRY ~ g 04/28/84 578902 Well WT-9 ammonia 0.36 ppm E 05/24/84 580412 Well WT-9 ammonia WELL DRY 3. 09/18/84 607689 Well WT-9 ammonia 0.94 ppm g r9/27/84 602841 Well WT-9 ammonia 0.52 ppm N 10/24/84 578076 Well WT-9 ammonia 0.19 ppm 2 11/06/84 626427 Well WT-9 ammonia 1.53 ppm D9 12/11/84 626572 Well WT-9 ammonia 0.32 ppm 01/14/85 633376.Well.WT-9 ammonia 0.25 ppm 02/11/85 647857 Well WT-9 ammonia 0.46 ppm 03/04/85 650939 Well WT-9 ammonia 0.14 ppm 04/01/85 651276 Well WT-9 ammonia 0.90 ppm 05/06/85 666217 -Well WT-9 ammonia 2.16 ppm 06/03/85 673598 Well WT-9 ammonia 1.96 ppm 07/01/85 682447 Well DOF-9 ammonia 1.48 ppm 08/05/85 688236 Well WT-9 ammonia 1.58 ppm } 09/03/85 687532 Well 10E--9 ammonia 0.83 ppa 09/30/85 705748 Well WT-9 ammonia 1.88 ppm v. 11/04/85 709276.Well WT-9 ammonia 0.26 ppm 12/02/85 709379 Well WT-9 ammonia 2.42 ppa 12/31/85 725254~' Well WT-9 ammonia 15-WELL DRY 05/05/86 740050 Well WT-9 ammonia. WELL DRY = . <.-. ~ -

~ FPaga 18 of'21. _GE-WIIMINGTON: WASTE TREATMENT WELLS CHEMICAL VALUES x (DATA FOR TABLE 5-52) - $.y Sample Sample-( Date . Number Location Analvte Result Units Comments E-06/02/86 769862 'Well WT-9 ammonia WELL DRY ~ 06/30/86 796748 Well:WT-9 ' ammonia WELL DRY E 08/04/86 805284 Well WT-9 ammonia SAMPLE LOST Q 09/03/86 759034 Well WT-9 ammonia WELL. DRY 2 09/29/86 804546 Well WT-9 ammonia WELL DRY. 3 11/03/86 791806 Well WT-9 ammonia WELL DRY d 12/01/86 815566-Well WT-9 ammonia WELL DRY 4-12/30/86 815636 Well WT-9 ammonia WELL DRY E 01/26/87 -794746 Well WT-9 ammonia 0.20 ppm 02/02/87 815706 Well WT-9 ammonia 1.30 ppm Q' 03/02/87 815839 Well WT-9 ammonia 0.25 ppm 03/30/87 816107 Well WT-9 ammonia 2.16 ppm E 04/29/87 816455 Well WT-9 ammonia 1.41 ppm 05/27/87 816636 Well WT-9 ammonia 6.76 ppm ( 06/22/87 816916 Well WT-9 ammonia 87.79 ppm 08/03/87 817232 Well WT-9 ammonia 21.10 ppm E 08/31/87 817632 Well WT-9 ammonia 55.71 ppm 09/28/87 817858 Well WT-9 ammonia 42.28 ppm 3 10/26/87 818129 Well WT-9 ammonia 35.09 ppm { 11/18/87 818424 Well WT-9 ammonia 29.89 ppm E 01/04/88 818767 Well WT-9 ammonia 0.87 ppm E-02/01/88 819119 Well WT-9 ' ammonia 22.13 ppm g 02/29/88 819399-Well ICE-9 ammonia 21.55 ppm N 03/28/88 819670 Well WT-9 ammonia-18.64 ppm D 04/25/88 819960 Well WT-9 ammonia 12.05 ppm. D9 05/23/88 820280 Well WT-9 ammonia. 13.60 ppm 06/20/88 820497 Well WT-9 . ammonia 8.04 ppm 08/01/88 820822 Well WT-9 . ammonia 4.87 ppm 08/29/88 821153 Well WT-9 ammonia 5.52 ppm 09/26/88 821424 Well WT-9 ammonia WELL DRY 10/19/88 821722 Well WT-9 ammonia WELL DRY 11/14/88 822049 Well WT-9 ammonia WELL DRY 01/09/89 822275 Well WT-9 ammonia WELL DRY 03/31/89 318727 Well WT-9 ammonia WELL DRY g 04/19/89 704877 Well WT-9 ammonia WELL DRY q 05/15/89 324760 'Well WT-9 ammonia WELL DRY u 05/26/89 326047 Well WT-9 ammonia WELL DRY [ 06/12/89 713317 Well-WT-9 ammonia WELL DRY i% ~06/23/89 3297871 Well'WT-9 ammonia WELL DRY 07/10/89 332162 Well WT-9 ammonia WELL DRY

Pags 19-of 21 ~GE-WIIMINGTON. WASTE TREATMENT WELLS' CHEMICAL VALUES .x (DATA FOR TABLE 5-52) jj' g Sample. Sample-jj Date Number-Location Analvte Result Units Comments E 07/21/89.334106 'Well WT-9 ammonia WELL DRY w. 08/11/89 335193 Well.WT-9 ' ammonia WELL DRY E j 08/30/89 336075 Well WT-9 ammonia WELL DRY C WELL DRY 09/20/89 338840 'Well WT-9 ~ ammonia 10/02/89 340147 Well WT-9 . ammonia 2.88. ppm 11 10/18/89 343957 Well WT-9 ammonia 1.97. ppm E 01/26/83 346897 Well WT-9 nitrate 17.60 ppm 5-02/16/83 346772-Well WT-9 nitrate 5.81 ppm E' 03/09/83 4583901 Well.WT-9. nitrate 10.90 ppm {. 04/06/83 464908: Well WT-9 nitrate 19.00 ppm jg 05/18/83 472865 Well WT -nitrate <0.13 ppm 06/23/83 488614 Well WT-9 nitrate 22.50 ppm E 07/24/83 495113 Well WT-9 nitrate 4.63 ppm 3: 08/20/83. 498274 Well WT-9 nitrate 14.60 ppm ( 09/22/83 505313' Well WT-9 nitrate 2.65 ppm R 10/21/83 498521 Well WT-9 nitrate WELL DRY E. 12/19/83 518500 Well WT-9 nitrate WELL DRY m 01/05/84 541700 Well WT-9 nitrate WELL DRY. 3 02/18/84 548596 Well WT-9 nitrate 17.80 ppm { 03/24/84 564955 Well WT-9 nitrate WELL DRY E 04/28/84 578902 Well WT-9 nitrate 4.35 ppm 1 05/24/84 580412 Well WT-9 nitrate WELL DRY o 09/18/84 607689 Well WT-9 nitrate 0.51 ppm-09/27/84 602841 Well WT-9 nitrate 1.98 ppm D 10/24/84 578076 Well WT-9 nitrate 0.98 ppm D 11/06/84 626427 Well WT-9 nitrate 0.61 ppm 12/11/84 626572 -Well WT-9 nitrate 1.53 ppm 01/14/85 633376 Well WT-9 nitrate 0.24 ppm 02/11/85 647854 Well WT-9 nitrate 9.99 ppm 03/04/85 650936 Well WT-9 nitrate 6.19 ppm 04/01/85 651273 Well WT-9 nitrate 3.92 ppm 05/06/85 666215 Well WT-9 nitrate 14.44 ppm 06/03/85 673600 Well WT-9 nitrate 11.50 ppm 07/01/85 682449 Well WT-9 nitrate 10.49 ppm 08/05/85 688238 Well WT-9 nitrate 9.73 ppm 4 09/03/85 687533 Well WT-9 . nitrate 21.48 ppm a 09/30/85 705750 Well WT-9 nitrate. 9.41 ppm 7 11/04/85 709278-Well WT nitrate 18.78 ppm 12/02/85 709381. Well WT-9 nitrate 70.82 ppm 12/31/85 725256 'Well WT-9 ' nitrate WELL DRY

6 P2ga 20 of 21-GE-WIIJfINGTON WASTE TREATMENT WELLS CHEMICAL VALUES 'x '(DATA FOR TABLE-5-52) .g Sample Sample- { Date Number Location Analvte Result Units Comments 'E. 02/05/86-727915 Well WT-9 nitrate WELL DRY 06/02/86-769863 Well WT-9 nitrate 'WELL DRY E 06/30/86 796749 -Well WT-9 nitrate WELL DRY Q 08/04/86 805285 Well WT-9' nitrate WELL DRY 2 09/03/86 759035 Well WT-9 nitrate WELL DRY 5 09/29/86 804547 Well WT-9 nitrate WELL DRY E 11/03/86 791807 Well WT-9 nitrate WELL DRY 12/01/86 815568 Well WT-9 nitrate WELL DRY E 12/30/86-815638 Well WT-9 nitrate WELL DRY h ' 01/26/87 794742 Well WT-9 nitrate 7.90 ppm G 02/02/87 815708 Well WT-9 nitrate 5.75 ppm 03/02/87 815841 ~ Well WT-9 nitrate 2.86 ppm E 03/30/87 816109 Well WT-9 nitrate 4.81 ppm y 04/29/87 816457 Well WT-9 nitrate 4.59. ppm .( 05/27/87 816638 Well WT-9 nitrate 139.66 ppm R 06/22/87 816918 Well WT-9 nitrate 64.33 ppm E 08/03/87 817234 Well WT-9 nitrate 82.19 ppm = 08/31/87 817634 Well WT-9 nitrate 90.73 ppm 3 09/28/87 817860 Well WT-9 nitrate 80.70 ppm { 10/26/87 818131 Well WT-9 nitrate 59.62 ppm E 11/18/87 818426 Well WT-9 nitrate 31.28 ppm E. 01/04/88 818769 Well WT-9 nitrate 0.67 ppm g 02/01/88 819121 Well WT-9 nitrate 497.23 ppm N 02/29/88 819401 ^Well WT-9 nitrate 838.21 ppm D 03/28/88 819672 Well WT-9 nitrate 355.14 ppm D. 04/25/88' 819962 Well WT-9 nitrate 258.02 ppm 05/23/88 820282 Well WT-9 nitrate 643.00 ppm 06/20/88 820499 Well-WT-9 nitrate 145.47 ppm 08/01/88 820824 Well WT-9 nitrate 39.91 ppm 08/29/88 821155 Well WT-9 nitrate 34.56 ppm 09/26/88 821426 Well WT-9 nitrate WELL DRY 10/19/88 821724 Well WT-9 nitrate WELL DRY 11/02/88 834908 Well WT-9 . nitrate WELL DRY 11/09/88 860137 Well WT-9 nitrate WELL DRY ? 11/14/88 822051 _Well WT-9 nitrate WELL DRY 11/16/88 860157 Well WT-9 nitrate WELL DRY a 11/30/88 860169 Well'WT-9 nitrate WELL DRY 7 12/07/88 860189 Well WT-9 nitrate WELL DRY 01/09/89 822277 Well.WT-9 nitrate WELL DRY 03/31/89 318729 Well'WT-9' nitrate WELL DRY j -~ ~ - ~ = ~ -

,._,m p-w, - Pag::t 21 of~21~ GE-WIIMINGTON WASTE TREATMENT WEMS CHEMICAL VALUES j --- :[ ^ (DATA FOR-. TABLE 5-52). 7.'- 4 p ' Sample Sample. . Analvte Result Units Comments 2E; g :. Date ' Number ~ Location C5/15/89 324762-WelliWT-9 . nitrate WELL" DRY 05/26/89.326049 ~ Well WT-9 ~ nitrate WELL DRY B 06/12/89 7.13307 Well WT-9. . nitrate WELL DRY Q 06/23/89 329789 Well WT-9 nitrate WELL DRY 2 07/10/89 332164 Well..WT nitrate' WELL DRY 3 07/21/89 334108 'Well~WT-9. ' nitrate WELL DRY E, 08/11/89 335195 Well.WT-9 nitrate WELL DRY 08/30/89 336077 Well WT-9 nitrate WELL DRY -E 09/20/89 338842 Well WT nitrate WELL DRY . ~. .10/02/89 340149 Well WT-9 nitrate 12.61 ppm i 10/18/89 343959 Well WT-9 nitrate 3.49 ppm 4 11/01/89 346357 Well WT-9 nitrate '31.67 ppm E-11/13/89 349405 Well WT-9 nitrate 29.47 ppm 2:: 12/01/89 352405 Well WT-9 nitrate 25.04 ppm { 12/13/89 354983 Well WT-9 nitrate 20.86~ ppm y E 3 &= 4 $hR 2 2 R =

-e T Page 1 of 7' - GE-WILMINGTON' PROCESS-LAGOON WELLS CHEMICALlVALUES' ~ '(DATA FOR. TABLE:5-55) (s. .S Sample Sample-g. Date Number Location Analvte ' Result Units Comments

E.

02/05/83 346809 ' Well.PL fluoride 0.23 ppm ~. 04/27/83 '465018 ~Well PL-l' fluoride' ' <0.10 ppm E 08/20/83 '498251 Well PL-1 fluoride WELL DRY Q 02/13/84 541517-Well PL-1 fluoride 'O.15 ppm l2 05/24/84 578941 Well PL-1 fluoride 0.18 ppm 25 10/06/84 602885 Well PL-1 fluoride 0.18 ppm E-11/12/84 626478 Well PL-1 fluoride' O.27 ppm 5 02/18/85 643117 Well'PL-1 fluoride 0.18 ppm E 04/29/85 666510 Well PL-1 fluoride -0.49 ppm 1 07/29/85 687231 Well PL-1 fluoride 0.28 ppm E 4 10/28/85 709212 Well PL-1 fluoride 0.22 ppm 01/27/86 727812 Well PL-1. fluoride 0.25 ppm E 04/28/86 739902 Well PL-1 fluoride 0.55 ppm 'y-07/28/86 757000 Well PL-l' fluoride 0.16 ppm 10/27/86 764801 Well PL-1 fluoride 0.19 ppm 01/26/87 794780 Well PL-1 fluoride 0.36 ppm E 04/13/87 816297 -Well PL-1 fluoride 0.53 ppm e 08/03/87 817325 Well PL-1 fluoride 0.10 ppm 3 10/26/87 818148 Well PL-1 fluoride WELL DRY { 01/04/88 818677 Well PL-1 fluoride 0.22 ' ppm E 03/28/88 819689 Well PL-1 fluoride 0.14 ppm .E 08/01/88 820865 Well PL-1 fluoride 0.19 ppm o 10/19/88 821759 Well PL-1 . fluoride 0.47 ppm $1 01/09/89 822510 Well PL-1 fluoride 0.26 ppm 2 04/24/89 321478 Well PL-1 fluoride 1.47 ppm D 08/08/89 335080 Well PL-1 fluoride 0.34 ppm 11/20/89 350474 Well PL-1 fluoride 0.29 ppm 02/05/83 346809 Well-PL-1 nitrate 7.55 ppm 04/27/83 465018 Well PL-1 nitrate <0.13 ppm 02/13/84 541517 Well PL-1 nitrate 1.54 ppm 05/24/84 578941 Well PL-1 nitrate <0.08 ~ ppm 10/06/84 602885 Well PL-1 nitrate 0.19 ppm 11/12/84 626478 Well PL-1 nitrate 1.39 ppm 02/18/85 643117 Well PL-1 nitrate 3.67 ppm y 04/29/85 666510 Well PL-1 nitrate 0.44 ppm q-07/29/85 687231 Well PL-1 nitrate 4.20 ppm a 10/28/85 709212 Well PL-l' nitrate 0.62 ppm 7 01/27/86 727812 'Well PL-l' ' nitrate 'O.43 ppm N' 04/28/86 739902 Well PL-1 nitrate 0.27. ppm 07/28/86 757000 Well' PL-1 nitrate 0.28 ppm = _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ = _ _ _ _ _ _ _, c,

^ ww _ a. ; ~ ~' Paga~2.of 7 .GE-WILMINGTON PROCESS LAGOON WELLS CHEMICAL VALUES i (DATA'FOR TABLE 5-55) g- -1 Sample sample ~ Location Analyte Result Units Comments-E- Q Date-Number ~ 10/27/86 764801 Well PL-1 nitrate 0.61 ppm %.1 01/26/87 '794780 1Well PL-1 nitrate <0.24 ppm .E 04/13/87 816297 Well PL-1 nitrate 2.04 ppm o 08/03/87 817325 Well PL-1 nitrate 64.64 ppm 10/26/87 818148.Well PL-1 ' nitrate WELL DRY 5 01/04/88 818677-Well PL-1 nitrate 0.64 ppm (- 03/28/88 819689.' Well PL-1 nitrate 0.13 ppm 4 08/01/88 820865 Well PL-1 nitrate 4.91 ppm E 10/19/88 821759 Well PL-1 nitrate 0.46. ppm {. 01/09/89 822510 Well PL-1 nitrate 0.78 ppm g 04/24/89 321478 Well PL-1 nitrate 0.73 ppm 08/08/89 335080 Well-PL-1 nitrate-0.68 ppm E z 11/20/89 350474 Well PL-1 nitrate 0.54 ppm y 02/05/83 346812 Well PL-3 fluoride WELL DRY L 08/22/83 498252. Well.PL-3 fluoride WELL DRY 02/13/84 541520 Well PL-3 fluoride 0.12 ppm i 10/06/84 602876 Well PL-3 fluoride 0.12 ppm a 11/12/84 626493 Well PL-3 fluoride WELL DRY { 02/18/85 643123 Well PL-3 flucride 0.11 ppm ~ 04/29/85 666517 Well PL-3 fluoride 0.36 ppm E 07/29/85 687236 Well PL-3. fluoride 0.22 ppm E 10/28/85 709216 Well'PL-3 fluoride ~ 0.08 ppm g 01/27/86 727846 Well'PL-3 fluoride 0.24 ppm N 04/28/86 739911 Well PL-3 fluoride 0.55 ppm U 07/28/86 805217 Well PL-3 fluoride ~ 0.16 ppm D'- t 10/27/86 764809 Well PL-3 fluoride 0.10 ppm 9 01/26/87 794789 Well PL-3 -fluoride 0.09 ppm 04/13/87 816302 Well PL-3 fluoride WELL DRY 08/03/87 817330 Well PL fluoride WELL DRY 10/26/87 818153 Well PL-3 fluoride WELL DRY 01/04/88 818682 Well PL-3 fluoride U.a2 ppm l 03/28/88 819694 Well-PL-3 fluoride 0.13 ppm 08/01/88 820870 Well.PL-3 fluoride 0.08 ppm 10/19/88 821764.Well'PL-3 fluoride 0.29 ppm-g 01/09/89 822515 Well PL-3 -fluoride 0.12 ppm Q-04/24/89 321481 Well PL-3 fluoride 3.61 ppm a 08/08/89 335083 -Well PL-3 . fluoride 0.09 ppm 7 11/20/89 350477 Well PL-3 fluoride 0.29' ppm 's - 02/05/83 346812 -Well PL-3 nitrate-WELL DRY iS O2/13/84 541520 -Well-PL-3 ' nitrate 0.98 ppm 1 _._ _. w..

+ P::.gS 3 of 7 GE-WIIMINGTON PROCESS LAGOON WELLS' CHEP'.ICAL ' VALUES. y (DATA FOR TABLE 5-55)l 'F 3-. .. Sample-Sample Result Units Comments E( Date l Number Location 1 __&nalvte 10/06/84 602876 Well PL-3 nitrate ~ 1.34 ppm . ~. 11/12/84: 626493. Well PL-3 nitrate WELL DRY B O2/18/85 643123 'Well-PL-3' nitrate ~ 26.03 ppm O 04/29/85 666517 Well.PL-3 nitrate 0.49. ppm .2-07/29/85 687236. Well PL-3 nitrate 13.93 ppm E[ 10/28/85' 709216 Well PL-3 nitrate 1.64 ppm jl. 01/27/86 727846 Well PL-3 nitrate 0.60 ppm 5' 04/28/86 739911 Well PL-3 ' nitrate 0.29. ppm E 07/28/86 805217 Well.PL-3 nitrate 0.24 ppm ' {. 10/27/86 764809 Well PL-3 nitrate 0.32 ppm -[ 01/26/87 794789 Well PL-3 nitrate 19.01-ppm 04/13/87 816302 Well PL-3 nitrate-WELL DRY E' 08/03/87 817330 Well PL-3 nitrate WELL DRY 10/26/87 818153 Well PL-3 nitrate WELL DRY ( 01/04/88 818682 Well PL-3 nitrate 0.84 ppm 03/28/88 819694 Well PL-3 nitrate 0.20 ppm 1 08/01/88 820870 Well PL-3 nitrate 4.18 ppm

~

10/19/88 821764 Well PL-3 nitrate 0.53 ppm 3 01/09/89 822515 Well PL-3 nitrate <0.60 ppm ( 04/24/89 321481 Well PL-3 nitrate 24.25 ppm E 08/08/89 335083 Well PL-3 nitrate 0.65 ppm E. 11/20/89 350477 Well'PL-3 nitrate 0.77 ppm g. 02/05/83 346813 Well PL-5 fluoride 0.23 ppm N 04/27/83 465024 Well PL-5 fluoride <0.10 ppm 2 08/20/83 498256 Well PL-5 fluoride WELL DRY D 02/13/84 541522 Well PL-5 fluoride <0.10 ppm 9 05/24/84 578937 Well PL-5 fluoride 0.32 ppm 10/06/84 602879 Well PL-5 fluoride 0.09 ppm I 11/12/84 626481 Well PL-5 fluoride 0.15 ppm 02/18/85 643121 Well PL-5 fluoride 0.06 ppm 04/29/85 666523 Well PL-5 fluoride 0.13 ppm 07/29/85 687241 Well PL-5 fluoride 0.22 ppm 10/28/85 709222 Well PL-5 fluoride 0.05 ppm 01/27/86 727822 Well PL-5 fluoride 0.09 ppm } 04/28/86 739913 Well PL-5 fluoride 0.13 ppm Q. 07/28/86 805219 Well PL-5 fluoride 0.07 ppm a 10/27/86 764811 Well PL-5 fluoride 0.65. ppm [ 01/26/87 794791 Well PL-5 fluoride 0.06 ppm .wf 04/13/87 816307 Well PL-5 fluoride .O.13 ppm 08/03/87 817335 Well PL-5 - fluoride 0.10 ppm

q .Page 4'of 7-CI-WILMINGTON PROCESS 3AGOON. WELLS CHEMICAL VALUES x. (DATA FOR TABLE 5-55) 's 2 Sample ~ Sample fj; Date ' Number ' Location ' Analyte _ Result Units Comments E 10/26/87 818158 Well PL-5 fluoride WELL DRY ~ 01/04/88 818687 Well PL-5 -fluoride 0.14-ppm 3: 03/28/88 819699' Well PL-5 fluoride 0.08 ppm -Q 08/01/88 820875 Well PL-5 fluoride' 0.08 ppm lEL 10/19/88 821769 Well~PL-5 fluoride 0.22 ppm 55 01/09/89 822520 ~Well PL-5 fluoride 'O.10 ppm 1 04/24/89 321487 Well PL-5 fluoride 3.87 ppm 5 08/08/89 335086 Well PL-5 fluoride 0.17 ppm E-11/20/89 350485 Well PL-5 fluoride 'O.16 -ppm lh 02/05/83 346813 Well PL-5 nitrate 7.25 ppm g. 04/27/83 465024 Well PL-5 nitrate 2.07 ppm 02/13/84 541522 Well PL-5 nitrate 2.25 ppm .E 05/24/84 578937 Well PL-5 nitrate 3.40 ppm jy 10/06/84 602879 'Well PL-5 nitrate 2.55 ppm y 11/12/ 04 626481 Well PL-5 nitrate .3.17 ppm 02/18/85 643121 Well PL-5 nitrate <1.20 ppm 1 04/29/85 666523 Well PL-5 nitrate 1.44 ppm-t 07/29/85 687241 Well PL-5 . nitrate <1.20 ppm 3 10/28/85 709222 Well PL-5 nitrate 0.57 ppm Q 01/27/86 727822 Well PL-5 nitrate 11.10 ppm .R. 04/28/86 739913 Well PL-5 nitrate 0.27 ppm 2L 07/28/86 805219 Well PL-5 nitrate 0.68 ppm g 10/27/86 764811 Well PL-5 nitrate 2.54 ppm N 01/26/87 794791 Well PL-5 nitrate. <'O.12 ppm 2 04/13/87 816307 Well PL-5 nitrate 13.73 ppm D' 08/03/87 817335 We.il PL-5 nitrate 74.03 ppm ? 10/26/87 818158 Well PL-5 -nitrate WELL DRY 01/04/88 818687 Well PL-5 nitrate 1.05 ppm 03/28/88 819699 Well PL-5 nitrate 0.17 ppm 08/01/88 820875 Well PL-5 nitrate 3.27 ppm 10/19/88 821769 Well PL-5 nitrate 0.35 ppm 01/09/89 822520 Well PL-5 nitrate 0.73 ppm 04/24/89 321487 Well PL-5 nitrate 0.76 ppm 08/08/89 335086 Well PL-5 nitrate 0.68 ppm-11/20/89 350485 Well PL-5 nitrate 0.77 ppm 02/05/83 346815' Well PL-8 fluoride 4.10-ppm a 04/27/83 465026' Well PL-8 fluoride 2.50 ppm- [ 08/20/83 498257 Well PL-8 Lfluoride WELL DRY 's 02/13/84 541524 Well PL-8 fluoride 1.60 ppm 05/24/84 578934 Well PL-8 fluoride 'O.46 ppm .. a - _ _ _ _.._n _ _.__ _. n ~

e-V Paga 5 of 7 .. GE-WIIMINGTON PROCESS IAGOON WELLS CHEMICAL VALUES i. '(DATA FOR TABLE 5-55) 1 ~ 'ik Sample Sample Result Units Comments EL Date Number. - Location Analvte 10/06/84 602880 Well PL-8 fluoride. 1.35 ppm ~ 11/12/84 626469 Well PL-8 fluoride-3.53 ppm 3 02/18/85 643126 Well PL-8 . fluoride. 0.92' ppm O 04/29/85 666532 Well PL-8 fluoride 3.40- ppm ~ $ 07/29/85 687246 Well PL-8 fluoride 0.19 ppm 55 10/28/85 709228 Well PL-8 fluoride 0.95 ppm E. 01/27/86 727828 Well PL-8 fluoride 0.09 ppm 04/28/86 739918-.Well PL-8 fluoride 2.44 ppm g 07/28/86 805225 Well PL-8 fluoride 0.35 ppm g 10/27/86 764828 Well PL-8 fluoride WELL DRY 01/26/87 794760 Well PL-8 fluoride 0.09 ppm ] 04/13/87 816312 Well PL-8 fluoride 2.37 ppm o 08/03/87 817340 Well PL-8 fluoride 0.58 ppm 10/26/87 818163 Well PL-8 - fluoride WELL DRY _ i 01/04/88 818692. Well PL-8 fluoride 0.91 ppm R 03/28/88 819704 Well PL-8 fluoride 0.59 ppm E 08/01/88 82088C Well PL-8 fluoride 0.82 ppm t 10/19/88 821774 Well PL-8 fluoride 0.82 ppm 3 01/09/89 822525 Well PL-8 fluoride 0.55 ppm ( 04/24/89 321490 Well PL-8 fluoride 3.04 ppm E 05/11/89 840077 Well PL-8 fluoride 1.60 ppm E' 08/08/89 335089 Well PL-8 fluoride 0.15 ppm g 11/20/89 350488 Well PL-8 ' fluoride 1.01 ppm h 02/05/83 346815 Well PL-8 nitrate 7.55 ppm ~ 04/27/83 465026 Well PL-8 nitrate 0.50 ppm eP 02/13/84 541524 Well PL-8 nitrate 2.88 ppm 05/24/84 578934 Well PL-8 nitrate 6.10 ppm 10/06/84 602880 Wel] PL-8 nitrate 3.59 ppm 11/12/84 626469 Well PL-8 nitrate 2.60 ppm 02/18/85 643126 Well PL-8 nitrate 5.24 ppm 04/29/85 666532 Well PL-8 nitrate G.34 ppm 07/29/85 687246 Well PL-8 nitrate 38.71 ppm 10/28/85 709228 Well PL-8 nitrate 2,67 ppm 01/27/86 727828 Well PL-8 nitrate 1.16 ppm 2 04/28/86 739918' Well PL-8 nitrate 1.00 ppm 07/28/86 805225.Well PL-8 nitrate 0.37 ppm g-10/27/86 764828 Well PL-8 ' nitrate WELL DRY e 01/26/87 794760 Well PL-8 nitrate 2.14 ppm 04/13/87 816312 Well PL-8 nitrate 2.02 ppm 08/03/87 817340'.Well PL-8 nitrate 58.96 ppm " ' ^ m 'T + .s *t'5 + h . -='* M

^ Pag'a 6 of.7 GE-WILMINGTON~ PROCESS LAGOON WELLS' CHEMICAL VALUES- 'E .(DATA FOR TABLE-5-55)' s_ g.. Sample . Sample

$~

Date Number Location Analvte Result Units Comments E. 10/26/87 818163 Well PL-8 nitrate WELL DRY 01/04/88' 818692 -Well PL-8 -nitrate 1.83 ppm E. 03/28/88 819704 Well PL-8' . nitrate 0.28. ppm C) 08/01/88 820880 Uall PL-8 nitrate <2.40 ppm 2' 10/19/88 821774 Well PL-O nitrate 1.82' ppm j$- -01/09/89 822525 Well PL-8 nitrate 1.47 ppm 1 04/24/89 321490 Well PL-8 nitrate <0.60 ppm ~5 05/11/89 840077 Well PL-8 nitrate. <0.60 ppm 08/08/89 335089 Well PL-8 nitrate 0.65 ppm g-11/20/89 350488 Well PL-8 ' nitrate 0.90 ppm G 02/05/83 346818 Well PL-11 fluoride 0.94 ppm 04/27/83 465020 Well PL-11 fluoride .O.50 ppm E 08/20/83 498260 Well PL-11 fluoride WELL DRY 02/13/84 541526 Well PL-11 ' fluoride 0.76 ppm 6 05/24/84 578931 Well PL-11 fluoride 0.24 ppm RF 10/06/84' 602883 Well PL-11 fluoride 0.49 ppm 3[ 11/12/84 626483. Well PL-11 fluoride 1.25 ppm

t 02/18/85 643129 Well PL-11 fluoride 0.46 ppm 3.

04/29/85 666537 Well PL-11 fluoride 0.98 ppm { 07/29/85 687251 Well PL-11 fluoride 0.18 ppm E 10/28/85 709233 Well PL-11 fluoride 0.47 ppm E 01/27/86 727845 Well PL-11 fluoride 0.09 -ppm g 04/28/86 739965 Well-PL-11 . fluoride 1.07 ppm N-07/28/86 805231 Well PL-11 fluoride 0.32 ppm DL 10/27/86 764825 Well PL-11 fluoride 0.73 ppm D 9 01/26/87 794799 Well PL-11 fluoride 0.71 ppm 04/13/87 816317 Well PL-11 fluoride 0.73 ppm 08/03/87 817345 Well PL-11 fluoride 0.58 ppm 10/26/87 818168 Well PL-11 fluoride 1.03 ppm 01/04/88 818697 Well PL-11 fluoride 10.96 ppe 03/28/88 819709 Well PL-11 fluorida 0.57 ppm 08/01/88-820885 Well PL-11 fluoride 0.90 ppm 10/19/88 821779 Well-PL-11 fluoride-0.93 ppm 01/09/89 822530 Well PL-11 fluoride 0.57 ppm 04/24/89 321493 -Well PL-11 fluoride 0.71 ppm 05/11/89 840083 -Well PL-11 fluoride-0.79 ppm a 08/08/89 335092 Well PL-11 fluoride 1.00 ppm .[' - 11/20/89 350491 Well PL-11 fluoride 1.03 ppm 02/05/83 346818 Well PL ' nitrate 7.55 ppm 04/27/83' 465020 LWell PL-11 nitrate <0.13 ppm = = -, _ -x

Paga'7Lof 7 IGE-WILMINGTON PROCESS LAGOON WELLS CHEMICAL' VALUES V (DATA FOR TABLE 5-55)_ 2 - g. Date Number Location ( Sample Sample ~Analvte-Result.. Units Comments E 541526.Well PL-11 nitrate 2.67 ppm 02/13/84 ~ 578931 'Well'PL-11 nitrate 7.00' ppm E 05/24/84 10/06/84: 602883 Well PL-11 nitrate 0.86 ppm CF 11/12/84 626483 Well PL ' nitrate 0.85 ppm 2 02/18/85 643129 Well PL-11 nitrate 2.79 ppm 5 04/29/85 666537 Well PL-11 nitrate 1.44 ppm 3, 07/29/85 687251 Well PL-11 nitrate 5.96 ppm 4 10/28/85 709233' Well PL-11 nitrate 3.44 ppm E= 01/27/86 727845. Well PL-11 . nitrate 1.34 ppm g. 04/28/86 739965 Well PL-11 nitrate 1.39 ppm y 07/28/86 805231 Well PL-11 nitrate 2.44 ppm v 10/27/86 764825' Well PL-11 nitrate 2.28 ppm E 01/26/87 794799 Well-PL-11 nitrate 0.13 ppm y-04/13/87 816317 Well PL-11 nitrate 3.52 ppm ( 08/03/87 817345 Well PL-11 nitrate-2.50 ppm 10/26/87 81c168 Well PL-11 nitrate 2.48 ppm 'l 01/04/88 818697 Well PL-11 nitrate 1.32 ppm t: 03/28/88 -819709. Well PL-11 . nitrate 0.12 ppm 3 08/01/88 820885 Well PL-11 nitrate 3.12 ppm g ~ 10/19/88 821779 Well PL-11 nitrate 1.64 ppm E 01/09/89 822530. Well PL-11 -nitrate 1.05 ppm E. 04/24/89 321493 Well PL-11 nitrate <0.60 ppm g 05/11/89 840083 Well PL-11 nitrate 0.74 ppm N D 08/08/89 335092 Well PL-11 nitrate 1.44 ppm ' D 11/20/89 350491 Well PL-11 nitrate 0.90 ppm .o 4

p'

p itschment 2 to GElit'llhaingtori letter to Ms Merri Horn d ted 06/21/90 Page1of$I a

TABLE 15-4. L EFFLUENT-MONITORING' 4 DISCHARGES TO ATMOSPHERE -'-URANIUM ACTIVITY-

y AVERAGE GROSS ALPHA.

TOTAL CONCENTRATION-NUMBER OF VOLUME GROSS ALPHA AT-POINTS OF-- DISCHARGE DISCHARGED ACTIVITY' DISCHARGE 3 YEAR STACKS' (101s cc) (MICROCURIES) 1(10- 18uci/cc)' < 's 1978 29' ~ 1.424 '4092-2.874 i 1979 29 3.959 1694' O.428' d 1980 31 3.594 1051 0.293: I

1 1981'-

31 -3.938 1105 0.281 i' . 1982 33 4.175 624 0.149 ~ 1983- -34 4.22 565' O.134

i t

' 1984 35 4.96 857' O.173 ~ - 1985 35 4.20 1202 0.286 l a s '*/ - 1986-33 4.13 2091 0.506 ? ? '3--8 4~.20 294. 0.070-4 1987 1 a i 1988-34 4.09 ~116 0.028= 1 - 1989 34 3.53 121 0.034 .i t I' 1 1 ( (' h l l h 1 ? 1 1 I

i r f' j- ' Attschment 3 to GE if'ilmington letter to Ms. Merri Horn dated 06/21/90. Page 3 of 5) . TABLE 5-5 4 ENVIRONMENTAL MONITORING I AIRBORNE GROSS ALPHA AND ISOTOPIC CONCENTRATIONS j (10 15 uCi/cc) El Average Gross Alpha SE Anblent Air Samotino Station at Points of Gross Atoha U 238 U 235 U 234 ltE Discharoe gyg t!g &ys Eg eyg gg gyg gn 1983 134 1.39 4.20 0.13 <0.39 0.14 <0.39 0.47 1.02 1984 1 73 1.59 3.70 0.28 0.74 .0.12 0.42 0.68 1.20 1985 286 2.23 18.00 0.25 0.64 0.06 0.14 -0.79 1.87 1986 506 2.53 12.00 0.21 0.85 0.04 0.23 0.84 4.59 1987 70 2.62 8.10 0.26 1.80 0.04 <0.18 0.94 7.06 19881 28 2.28 5.80 0.20 <0.71 0.11 <0.71 2.19 14.83 1989 34 2.21 4.60 0.09 <0.32 <0.06 -<0.20 0.21 <0.50 Average Gross Alpha S Ambient Air sanelina Station at Points of Gros. Aloha ll 238 U 235 U 234 Year Discharoe AYE BE 6Y2 EE 6Y2 BE AYS HE 1983 134-1.51 3.00 0.16 0.28 0.08 0.13 0.62 1.02 1984 1 73 2.11 17.00 0.43 2.08 0.29 2.22 0.89 3.25 1985 286 2.01 11.00 0.49

1. 73 0.10-0.60

-1.68 6.00 1986 506 2.79 17.00 0.31 0.88 0.06 <0.35 1.16 3.53 1o87 70 3,04 6.80 0.22 0.42 0.05 0.15 0.56 1.16 19881 28 2.64 6.90 0.26 0.46 0.08 <0.35 1.28 4.59 1989 34 2.32 4.70 0.07 0.18 <0.04 <0.18 0.15 0.42 1 11he 1983 isotopic analyses are inconsistent with the Gross alpha measurements. -J 1hese inconsistencies are believed to be due to low radiochemical yletds and high f counting background at the Laboratory performing the analyses,'resulting in large random and nonrandom errors. Because of extremely low redlochemical yields, the .l October 1988 results were judged unreliable by the laboratory and are excluded 'j from the average. j l l i . l 3

i Attachment a to GE il'ilmington letter to his, hierri Horn dated 06/21/90. Page 3 of 5) TABLE 5-6 ENVIRONMENTAL MONITORING AIRBORNE l GROSS ALPHA AND ISOTOPIC CONCENTRATIONS (10 15 uCi/cc) 3 Average Gross Alpha Ski Ambient Air Sarrotinc Station at Points of Gross Atoha U 238 _ U 235 U 234 ltE Olschargg gyg gg5 gyt EH &YS BA5 6Xt PSE 1983 134 1.74 3.90 0.98 2.61 1.08 .5.60 3.90 11.30 1984 173 2.38 6.40. 0.37 1.27 0.31 2.29 1.07 2.58 1985 286 2.77 33.00 1.11 5.65 0.23 1.38 2.78 17.66 1986 506 2.51 4.80 0.34 0.88 0.04 0.10 1.19 4.24 1987 70 2.89 6.30 0.17 0.32 0.05 <0.11 0.51 0.92 19881 28 2.68 6.10 0.30 1.24 0.10 <0.18 0.58 1.34 1989 34 2.25 4.10 0.11 0.33 <0.06 <0.20 0.28 0.78 Average Gross Alphe NE Ambient Air Samolina Strtion at Points of Gross Atoha U 238 U 235 U 234 Igg Discharae hyg Eg3 hyg Egg gyg gg3 A gg5 y 1983 134 1.24 <3.00 0.14 <0.19 0.11 <0.19 0.29 0.49 1984 173 1.45 2.70 0.16 0.39 0.10 0.32 0.60 0.95 1985 286 1.61 3.20 0.33 0.99 0.08 0.35 1.05 2.22 1986 506 2.22 6.50 0.19 0.49 0.04 <0.14 0.76 3.07 1987 '70 3.11 7.30 0.25 0.95 0.03 <0.07 0.62 2.29 19881 28 3.30 6.70 0.43 1.55 0.22 0.99 4.49 38.85 1989 34 2.20 4.50 0.09 <0.25 <0.05 <0.25 'O.24 0.96 I The 1988 isotopic analyses are inconsistent with the gross alpha measurements. .These inconsistencies are believed to be due to low redlochemical yields and high counting background at the Laboratory performing the analyses, resulting in large random and nonrandom errors. Because of extremely low radiochemical yields, the October 1988 results were judged unreliable by the laboratory and are excluded from the average.

t to GE iritmington letter to his. Aterri Horn dated 06/21/90. Page (of51 i TABLE 5-7 NORTH CAROLINA RADIATION PROTECTION SECTION ENVIRONMENTAL SURVEILLANCE PROGRAM SURFACE WATER GROSS ALPHA ACTIVITY CONCENTRATION t (PCi/1) Sanctino tocation Ntaber (See Figure 214) Sapote Date 1 2 3 4 21 22 01/06/1983 269.7 136.3 114.5 123.8 1.8 21.0 1.1 20.8 04/06/1983 149.3 127.5 129.6 221.6 0.9 10.8 0.7 20.7 07/07/1983 283.4 136.6 -189.0 130.5 1.7 21.8 0.2 21.0 10/06/1983~ 583.6 249.8 337.0 236.4 0.0 291.0 0.0 12.5 01/06/1984 558.7 248.4 438.0 242.3 0.7 21.3 1.1 11.0 04/05/1984 217.7 132.7 -127.2 120.3_ 1.4 ti 0 0.3 to.6 07/11/1984 155.2 127.8 175.1 129.5 3.3 16.7 0.0 11.2 10/01/1984 261.8 123.2 60.7 29.8 1.2 20.7 1.0 20.9

• 0/02/1984

~ 3.9 13.4 02/28/1985 279.9 129.4 - 0.1 10.5 0.5 20.6 156.4 *19.5 155.5 *19.8 07/10/1985 23.7 28.4 85.1 214.9 0.0 251.0 0.1 20.1 6.6 t13.0 i 08/29/1985 355.1 229.7 610.5 141.5 1.5 10.1' O.6 20.8 195.7 222.2 i 11/21/1985 68.9 113.8 85.6 214.3 1.0 11.2 1.0 11.1 78.4 *13.5 02/25/1986 191.0 *27.4 126.0 *19.2 0.7 10.8 0.1 20.5 63.1 111.2 05/23/1986' 148.0 125.6 116.0 218.5 6.4 e41.5 128.0 t17.1 08/28/1986 528.0 126.3 178.0 220.0 2.1 21.0 0.8 *1.0 263.0 221.5 11/21/1986 54.4 *16.5 37.9 18.5 0.0 12.3 2.3 22.6 113.0 29.0 02/13/1987 103.0 119.3 101.0 217.0 0.8 20.7 0.6 10.6 72.9 *13.9 05/21/1987 78.4 216.8 44.3 211.9 2.2 *2.9 -1.4 21.0 103.0 *17.2 08/20/1987 321.0 216.0 -135.0 210.6 1.5 21.4 0.3 20.8' 160.0 211.9 11/19/1987 167.0 29.9 125.0 29.3 21.7 *1C7.0 ,1.5 *2.2 161.0 212.0 05/25/1988 83.3 118.0 111.0 118.4 1.5 ti.6 - 0.7 21.2 74.4 216.4 09/02/1988 112.0 123.9 31.8 116.1 1.4 21.5 1.4 21.3 80.9 217.9 03/03/1989 39.1 210.6 0.0 12.5 0.9 to.0 04/27/1989 214.0 217.0 62.5 18.3 0.3 10.8 1.2 21.0 05/11/1989 34.0 26.9 - 06/23/1989 69.7 110.3 07/20/1989 51.2 210.6 t 08/17/1989 183.0 110.0 08/31/1989 326.0 *14.0 1.1 10.8 0.4 20.7 09/28/1989 37.6 14.2 10/12/1989 57.6 25.8 11/29/1989 118.0 210.0 0.2 *1.9 0.5 21.4 ,12/07/1989 53.0 13.5 i -aki

. Attachment 3 to GE-Irlimington letter to bli hierri Horn dated 06/21/90. Page5of$1 TABLE 5-8 ' NORTH CAROLINA RADIATION PROTECTION SECTION ENVIRONMENTAL SURVEILLANCE PROGRAM BOTTOM SEDIMENT GROSS ALPHA ACTIVITY CONCENTRATION (pCi/l) F Samplino location Nunt.ee (See Floure 214) [ ig!gde Date 1 2 3 4 21 22 07/07/1983 0.0 17.3 1.3 $9.2 10/06/1983 2.9 29.2 4.0 16.9 '10/01/1984 130.6 228.9 13.3 110.0 5.8 19.4 1.5 18.3 6.5 89.8 D 10/02/1984 6.0 18.2 11/21/1985 2.5 16.7 0.0 24.3 11/21/1986 9.9 15.7 0.0 216.2 4.7 15.7 25.6 29.0 08/20/1987 684.0 249.9 11/19/1987. 8.6 16.4 6.2 17.8 05/25/1988 777.0 255.3 - 7.5 18.6 14.7 28.0 09/02/1988-773.0 168.3 15.9 210.0 04/27/1989 (11 3.0 16.2 10.3 27.7 Isanple with result 2490210 pcl/l was taken of soll in bottom of process lagoon rather then routine GE location of sediment et process lagoon outfall. i i i 1 l 1 lf

Attachment _3 to GE ll'ilmington letter to Ms. Merri llorn dated 06/21/90. Page 6 of $1 TABLE 5-9 i NORTH CAROLINA-RADIATION PROTECTION SECTION ENVIRONMENTAL SURVEILLANCE PROGRAM VEGETATION SAMPLES GROSS ALPHA ACTIVITY CONCENTRATION (pci/gm - wet basis) Sampling Location Nunber (See Floure 2 14) Sciete Dete 5 6 231 01/06/1983 0.22 10.25 0.09 10.23 07/07/1983 0.18 20.72 0.33 to.58 01/06/1984 0.43 20.61 0.08 20.64 07/11/1984 0.70 11.01 0.56 20.61 02/28/1985 1.18 *1.53 0.40 20.41 07/10/1985 0.00 20.21 0.47 10.44 l 05/23/1986 0.00 20.59 0.00 *1.83 11/21/1986 0.52 20.24 0.30 20.16 05/21/1987 0.00 20.72 0.05 to.17 11/19/1987 0.26 10.22 0.11 20.10-t 05/25/1988 0.93 20.32 0.82 20.29 i 04/27/1989 0.22 so.16 0.38 10.22 0.41 10.23 10/26/1989 0.44 10.34 0.36 *0.48 - 0.18 20.44 1 Sampling at new location nunber 23 began in 1989 Sample Location is 4 miles northeast of GE Wilmington. ]

. to GE-Wilmington letter to his. Aterri Horn dated 06/21/90. Page 7 of $1 4 TABLE 5-10 EFFLUENT MONITORING 'f]NAL PROCESS LAGOON OUTFALL Uranium Content (10*gs Alpha Orogs Beta Oro foomil

• uti/ce)

(10*f uct/ce) 111lI ht liiD - !!R5 ' ht !!10 !!A5 ht !!10 !!A5 1983 0.15 0 1.27 3.46 <0.63 12.00' 2.05 0.82 4.90 1984 0.17 0.02 1.00 4.41 <0.89 26'.00 2.35 0.98 6.00 1985 0.17 0 1.33 2.57 0.38 15.00 1.60 <0.39 4.50 I i. 1986 0.13 0 1.34 2.76 0.26 23.00 1.19 <0.39 5.20 1987 0.26 0 12.60 5.42 <0.22 91.00 1.49 <0.40 22.00 1988 0.04 0 0.21 1.10 <0.24 4.00 0.68 <0.37 1.70 1989 0.05 0 0.21 1.64 <0.23 3.90 0.69 0.25 2.10 IValues lower than the minima detectable level of 0.02 ppm are shown as 0, i

! Attachment 2 to GE-il'ilmington letter to his. hierri Horn dated 06/21/90. Page 8 oj $1 TABLE 5-11 EFFLUENT MONITORING f NITRATE-SHIPMENTS TO FEDERAL PAPER BOARD COMPANY. INC. Uranium Content (10'gsAlpha (10'gs Beta Gro Gro (corrl ' utt/ce) ' uCf/ce) ltE elt !!.!D EA5 6XI B1D !!A5 Art tLLQ ERA 1983 0.43 0-1.70 5.68 <4.90 12.00 14.74 <11.00 56.00 1984 0.41 0.02 1.94 5.24 0.75 17.00 8.74 1.40 16.00 .a 1985 0.55 0.02 2.07 7.49 0.82 19.00 3.93 <0.15 23.00 1986 0.67 0.06 1.65 11.87 3.50 25.00 4.46 2.00 6.40 1987 0.21. 0.03 1.14 4.13 0.96 16.00 2.21 0.65 4.50 1988 0.18 0 0.58 5.01 0.81 12.00 -2.36 <0.23 4.80 1989 0.43 0.02 1.40 16.39 1.70 49.00 4.39 0.73 16.00 I alues lower than the minian detectable level of 0.u2 ppm are shown as 0. V 1 i f

ll - Attachment 2 to GE fl'ilmington letter to Us, Merri Horn dated 06/21/90. Page 9 of 51

i.

TABLE 5-12 EFFLUENT MONITORING-HYDROFLUORIC ACID SHIPMENTE. URANIUM CONCENTRATION i (ppm) I' 6H !!!.!i !!M 1983 0.61 0.10 1.12 -r i 1984 0.09 0.03 0.14 1985 0.32 0.26 0.38 -~ 19861 19871 19881 ) 19891 i 1No shipments. l

h I

l i { h n 'l l

7.= HY

Attachment 3 to GE fl'ilmington letter to his, hierri Horn dated 06/21/90.

Page =10 of 31 b. L i E. TABLE 5-13 EFFLUENT MONITORING SANITARY WASTE TREATMENT FACILITY EFFLUENT UBANIUM CONCENTRATION' (Ppm)1 m !!B !!M 1983 0 0 0 i-1984. 0.03 0 0.05 1985 0.03 0 0.12 1986 0.02 0 0.05 1987 0.03 0 0.11 1988 0 0 0 1989 0 0 0 ivalues lower than the minimum detectable levet of 0.02 ppm are shown as 0. t s l j 1 i

., to GE 11'ilmington letter to his. hierri Horn dated 06/21/90. Page 11 of $1 TABLE 5-14 ENVIRONMENTAL MONITORING TREATED SANITARY SLUDGE DIRECTED TO APPLICATION AREA URANIUM CONCENTRATION (ppm)1 As Anotled itE2 PR Blil !!a5 1987 0.19 0 1.30 1988 0.03 0 0.06 1989 0 0 0 IValues lower'than the minisun detectable level of 0.02 ppm are shown as 0. 2 ot routinely monitored prlor to 1987. N -i .t -k 6 4 l h l' I;

.1 Att:chment 2 to GE-Wilmington letter to his. Aterri Horn dated 06/21/90. Page 12 of 51. I TABLE 5-16 l ENVIRONMENTAL MONITORING SITE DAM URANIUM CONCENTRATION (ppm)1 i l } m a m 1983 0.11 0 0.59 1984 0.11 0.01 0.42 1 1 1985 0.12 0 0.77 1986 0.09 0 0.% 1987 0.10 0 2.11 1988 0.03 0 0.29 l 1989 0.03 0 0.20 ivalues ' lower than the minimun detectable Level of 0.02 ppm are shown as 0. l -i l-i i

1 -g, Allkhmed 2 I? GE Wilmirtton letter to his, hierri Horn d:ted 06/21/90. 12ge 13 cf $1 o l' TABLE 5-17 EFVIRONMENTAL MONITORING NORTHEAST CAPE FEAR RIVER URANIUM CONCENTR'T.I.QH i (ppm)1 } 'q,- Umstrees rd*Witainatan Dnek bowst ream IAE Art 210 BRA Art 510 Baa Art f.in Ben' 1983 0.04 0.02 0.20 0.02 0.02 0.18 0.03 0.02 0.12 1984 0.03 0 0.10 0 0 0 0.03 0 0.08 1985 0.02 0 0.03 0.02 0 0.03 0.02 0 0.02 1986 0.02 0 0.02 0.02 0 0.02 0.02 0 0.02 1987 0 0 0 0 0 0 0 0 0' 1988 0 0 0 0 0 0 0 0 0 1989 0 0 0 0 0 0 0 0 0 ivalues tower then the minima detectobte tevel of 0.02 ppe are shown as 0. n l 4 Y c-

L Attachme:I 2 to GE.Wilmi ston letter to his. hittri Horn dated 06/21/90. P:ge 14 cf.8) TABLE 5-1s KNVIRONMENTAL MONITORING PRINCIPAL AOUIFER URANIUM CONCENTRATION (Ppm)1 SUPPLY WLt COMBINED INLET WUMett MON!TottNG WLL g WAttR suPPty -9 il 14 W4e mmm M mm M M M M mM M mM 1978 0 0 0 s 1979 0 0 0 + 1960 0 0 0 19612 0 0 0.06 0 0 0 + 19822 0 0 0.03 0 0 0 0 0 0 0 0 0 0 0 0 1983-0 0 0 0.02 0 0.06 0.03 0 0.11 0.03 0 0.10 0.02 0.02 0.03 1964 0 0 0 0.02 0 0.03 0.02 0 0.05. 0 0 0 0 0 0 1985 0.02 0 0.04 0,92 0 <0.03 0.02 0 <0.03 0.02 0 <0.03 0.02 0 0.03 1966 0 0 0 0.02 0 0.03 0 0 0 0.02 0 0.0$ 0 0 0 198? 0 0 0 0.03 0 0.09 0 0 0 0 0 0 0 0 0 1 1988 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 l 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ivalues lower than the mintan detectable level of 0.02 ppe are shown as 0. 2 aspline Progree started in 1961 for W $C and in 1982 for 9,11 & 14. 4 l i i

.] Attachme:I 2 sp GE.il'ilmington letter to his hferri Horn d:ted 06/ 21/ 90. P:te 15 of $1 l ' I r-TABLE 5-19 t t ENVIRONMENTAL MONITORING i n PRINCIPAL AOUIFER l r 1 ACTIVITY CONCENTRATION I i (10'gsAL>nA (10'gsti1A Oto Geo uC1/cc) utt/cc) IELLY', A!!al1Gli Ilat 61 !!H E M llH E $wpty wit 9 19831 5 1984 <0.04 <0.03 <0.04 <0.16 <0.15 <0.17 ~i 1985- <0.04 <0.02 <0.05 <0.14 <0.11 <0.17 1986 0.03 <0.02 0.07 0.16 <0.13 0.26 1987 0.03 <0.02 <0.03 <0.16 <0.14 <0.17 i 1988 <0.03 <0.02 <0.03 0.16 <0.14 0.26 1989 <0.04 <0.02 <0.14 0.14 <0.09 <0.32 i s@pty' wlt 11 19831 + 1984 <0.03 <0.03 <0.04 0.13 0.02 <0.16 + 1985 <0.03 <0.02 <0.04 0.17 <0.11 0.40 1986 0.03 <0.02 0.05 0.16 <0.14 0.31 1987 0.03 0.01 <0.03 0.16 <0.14 0.20 v 1988 0.03 0.02 <0.03 0.17 <0.14 0.39 ~1989 0.03 <0.03 <0.03 <0.11 <0.09 <0.13 l t Supply wil 14 _19831 i 1984 <0.03 <0.01 <0.05 0.20 <0.03 0.47 4 1985 0.04 <0.02 <0.05 <0.14 <0.11 <0.17 1986 0.03 0.01 <0.04 <0.15 <0.13 <0.16 1987 <0.03 <0.02 <0.04 <0.16 <0.14 <0.17 1988 0.03 <0.03.<0.04 0.16 <0.14 0.24 l 1989 0.03 <0.02 <0.04 0.12 <0.10 0.16 l 18upply wlls added to monitoring program in August,1984 l i o 1 s 1

x ~ Allachment 2 to GE.Wilmington letter to Afs. hierri Horn d ted 06/21/90. Page 16 of.8) i ' TABLE 5-20 ENVIRONMENTAL MONITORING n. WATER-TABLE AOUIFER - FINAL PROCESS LAGOON AREA URANIUM CONCENTRATION I i (ppm)1 I Welt i Desianation 3 3 3 3 igI igg g ) 11d Ave 0.02 0 0 0 0 0.02 0 3 Min. 0.02 0 0 0 0 0 U Max 0.02 0 0 0 0 0.03 0 11d Ave . (2) 0 0 0 0 0 0 Min (2) 0 0 0 0 0 0 i Max (2) 0 <0.03 0 0 0 0 11d Ave 0.02 0 0.02 0 9 0. 0 5 Min 0.02 0 0 0 0 0 Max 0.02 0 0.04 0 e 0 0 11:,1 Ave 0.02 0 0.03 0.03 0 0 0.03 Min 0.02 0 0 0 0 0 0 Max 0.02 0 0.05 0.04 0 0 'O.07 11:,11. Ave 0.02 0 0.03 0.03 0.03 0 0.02 Min 0.02. 0 0 0 0 0 0 Max 0.03 0 0.05 0.05 0.07 0 0.04 ivalues tower than the minima detectable level of 0.02 pen are shown as 0. t (2) Welt dry att year. N e i k: O! } ~ ~... .~., -.

i . Attachme::t 2 to GE-lf'ilmington le!!vr to his. Aferri Horn dated 06/21/90, P:ge 17 of 31 TABLE 5-21 ENVIRONMENTAL MONITORING WATER-TABLE AOUIFER - FINAL PROCESS LAGOON AREA ACTIVITY CONCENTRATION 1 i GR0 GR $ StfA (10'glALPHA (10}' uCl/cc) utt/cc) Vf tl M$1CNAtl0N 1[Q [Y[ M ${ PL 1 1983 <0.22 <0.03 <0.42 <0.29 <0.16 <0.43 1984 <0.03 <0.02 <0.04 <0.15 <0.13 <0.16 1985 <0.02 <0.02 <0.03 0.16 <0.14 0.17 1986 0.03 <0.03 0.04 0.20 <0.14 0.33 1987 0.03 <0.02 0.05 0.17 <0.15 0.20 1988 0.07 <0 02 0.19 0.16 <0.14 0.19 1989 <0.03 <0.03 <0.03

0. *. 4 <0.11 0.17 pt.3 19g31 1984

<0.03.:0.03 <0.03 0.26 <0.16 0.36 1985 0.04 *0.02 0.08 <0.16 <0.14 <0.17 1986 <0.03 <0.n3 <0.04 <0.14 <0.13 <0.16 1987 <0.02 <0.02 <0.02 <0.17 <0.17 <0.17 1988 0.04 <0.02 0.08 0.16 <0.14 <0.17 1989 0.07 <0.02 <0.16 0.19 <0.10 <0.33 PL*5 1983 <0.57 <0.04 <1.10 <0.29 <0.16 <0.43 1984 0.04 0.03 <0.04 0.18 <0.15 0.26 i 1985 0.06 <0.02 0.12 0.21 <0.15 0.35 1986 0.20 <0.02 0.74 0.15 <0.14 0.16 1987 0.02 0.02 <0.03 <0.16 <0.15 <0.17 1988 0.04 0.03 0.05 <0.15 <0.14 <0.15 1989 0.14 <0.04 0.39 0.16 <0.11 0.21 PL*8 1983 <0.37 <0.04 <0.70 <0.29 <0.16 <0.43 1984 0.05 <0.02 0.11 <0.15 <0.13 <0.16 1985 0.07 <0.04 0.11 <0.16 <0.14 <0.17 1986 0.16 <0.03 0.41 <0.14 <0.14 <0.15 1987 0.04 <0.02 0.07 0.16 <0.15 0.18 1988 0.16 0.08 0.29 <0.15 <0.14 <0.17 1989 0.27 <0.02 0.99 0.18 <0.11 0.31 PL 11 1983 0.34 0.17 <0.68 0.25 <0.16 <0.43 1984 0.22 0.12 0.43 0.17 <0.15 0.21 1985 0.21 0.13 0.34 <0.16 <0.14 <0.17 1986 0.20 <0.04 0.52 0.25 <0.14 0.46 1987 0.25 0.10 0.67 0.16 <D.14 0.18 1988 0.10 0.06 0.14 <0.16 <0.14 <0.17 1989 0.32 0.13 0.94 0.12 <0.10 0.20 1Well dry att year.

' Attachtne~t 2 to GE \\\\'ilmington letter to his. hierri llorn d:ted 06MJ/90. P:ge15of31 L i TABLE 5-23 ENVIRONMENTAL MONITORIHQ WATER-TABLE AOUIFER - WASTE TREATMENT FACILITY URANIUM CONCENTRATION (ppm)1 I Welt bestanation ,11g} ,1236 jig} .19.06 E 31 80 M Eh1 Ave 0.09 0.10 0.11 0.19 0.02 0.02 0.02 Min 0 0 0 0 0 0 0 Max 0.32 0.35 0.42 1.54 0.05 0.03 0.06 Eh2 Ave 0.02 0 0.03 0.02 0 0.02 0 Min 0 0 0 0 0 0 0 Max 0.02 0 0.05 0.03 0 0.03 0 Ehl Ave 0.02 0.02

0. 0't 0.02 0

0 0 Min 0 0 0 0 0 0 0 Max 0.03 0.03 0.03 0.03 0 0 0 Ehi Ave 0.02 0 0.02 0.02 0 0 0 Min 0.02 0 0 0 0 0 0 Max 0.02 0 0.04 0.02 0 0 0 Ehl Ave 0.02 0 0.02 0.02 0 0 0 Min 0 0 0 0 0 0 0 Max 0.02 0 0.03 0.02 0 0 0 Eh6 Ave 0.02 0 0.02 0.02 0 0 0 Min 0 0 0 0 0 0 0 i Max 0.03 0 0.03 0.06 0 0 0 Ehl Ave 0.02 0.02 0.02 0.02 0 0 0 Min 0 0 0 0 0 -D 0 Max 0.02 0.03 0.03 0.02 0 0 0 Eh2 Ave 0.02 0.07 0.03 (2) 0.02 0.02 0 Min 0 0 0 [2] 0 0 0 Max 0.02 0.39 0.08 (2) 0.05 0.03 0 Ivalues lower than the mininum detectable level of 0.02 ppm are shown as 0. (2) Well dry all year. )

.4ttachme:I 2 t> GEMilmington !ctier to AfL hierri Horn d:ted 06/21/90. P:ge 19 of $1 \\ i 1 l TABLE 5-24 i ENVIRONMENTAL NONITORING l WATER-TABLE AOUIFER - WASTE TREATMENT FACILITY (10'gtALPHA (10}'uCf/cc) OR0 OR $ 8tfA i utt 'ug/cc) W LL DillGNAi!DN ILE M t llg M lQg g i Wtai 1983 1.59 0.87 2.30 0.38 0.25 0.51 e 1984 3.24 0.46 8.20 0.62 0.19 1.60 1985 1.58 0.38 5.20 0.36 <0.12 0.83 1986 7.35 0.28 56.00 2.00 0.23 9.70 1987 0.35 0.19 0.56 0.20 <0.15 0.34 1988 0.34 <0.03 0.54 0.21 <0.15 0.65 i 1989 0.29 0.15 0.48 0.18 <0.09 0.43 i WT 2 1983 0.03 <0.03 0.04 0.17 0.12 0.34' t 1984 0.03 <0.02 0.07 0.19 <0.12 0.38 1985 0.03 0.02 0.07 0.17 <0.12 0.34 l 1986 0.05 <0.02 0.18 0.17 <0.12 0.37 l y 1987 0.03 0.02 0.04 0.17 <0.14 0.31 1988 0.07 <0.01 0.56 0.16 <0.14 0.22 i 1989 0.03 <0.02 0.04 0.15 <0.10 0.58 WT 3 1983 <0.02 <0.02 <0.03 0.17 <0.13 0.25 t 1984 <0.02 <0.01 <0.03 0.18 <0.11 0.34 1985 0.03 <0.02 0.06 <0.15 <0.12 <0.17 1986 0.03 <0.02 0.09 0.15 0.13 <0.17 1987 0.03 <0.02 0.04 <0.16 <0.14 <0.17 1988 0.06 <0.02 0.39 0.15 <0.14 0.16 1989 0.03 <0.02 0.05 0.19 <0.10 0.42 WT 4 19831 19841 1985 0.05 ft.02 0.14 0.19 <0.12 0.45 1986 0.03 <0.01 0.04 0.15 <0.14 0.20 1987 0.02 <0.01 <0.03 <0.15 <0.14 <0.17 1988 0.03 <0.02 0.05 0.16 <0.14 0.22 1989 0.03 <0.02 0.05 0.19 <0.11 0.41 i Wi 5 1983 0.12 <0.02 <0.54 0.24 0.12 <0.48 1984 0.02 <0.01 0.03 -- 0.15 <0.11 0.24 1985 0.03 0.01 0.10 0.15 <0.11 <0.17 + 1986 0.02 <0.02 0.03 0.16 <0.12 0.24 1987 0.02 0.02 <0.03 <0.15 <0.14 <0.17 1988 0.02 < 0. 01. 0.03 <0.15 <0.14 <0.16 l 1989 0.02 <0.01 0.03 0.13 <0.09 0.22 i Wi 6 1983 0.18 <0.04 <0.59 0.26 <0.12 0.59 r 1964 0.05 <0.03 0.07 0.16 <0.12 0.24 1985 0.05 0.02 0.09 0.19 <0.12 0.41 1786 0.04 0.02 0.10 0.21 <0.14 0.57 1987 0.03 <0.02 0.04 0.16 <0.14 0.20 1988 0.04 <0.02 0.10 0.16 <0.14 0.22 1989 0.04 <0.02 0.18 0.16 <0.10 0.49 WT 7 1983 0.15 0.02 <0.51 0.24 <0.13 <0.48 1984 0.03 0.02 0.06 0.17 <0.11 0.27 1985 0.03 <0.02 0.05 0.17 <0.11 0.41 1986 0.17 <0.02 1.80 0.25 <0.13 0.72 19A7 0.02 <0.02 0.03 0.16 <0.15 <0.17 1938 0.03 0.02 0.04 <0.15 <0.14 <0.16 l 1989 0.02 <0.02 0.03 0.16 <0.09 0.39 Wi 9 - 1983 <0.14 <0.02 <0.39 0.29 <0.16 <0.48 1984 1.12 <0.02 6.80 0.37 <0.11 1.30 1985 0.37 <0.02 0.77 0.20 <0.11 0.39 19861 a 1987 0.22 <0.02 0.57 0.21 <0.15 0.36 1988 0.29 <0.02 0.52 <0.16 <0.14 <0.17 1989 <0.02 <0.02 <0.02 <0.12 <0.11 <0.12 iWell dry att year. .. ~ -.

Attachme:S 212 G&N7tml::gtin letter to M.t. Merri Horn dited 06/21/90. P:ge 20 :] $1 TABLE Ba22 i ENVIRONMENTAL MONITORING i e WATER-TABLE AOUIFER - FOR!tER ZIRCONIUM SLUDGE STORAGE AREA URANIUM CONCENTRATION i i (ppm)1 welt j o.. ian.o on a a a a a a m u Ave 0.02 0 0.02 0 0 0 0 Min 0 0 0 0 0 0 0 1 Men 0.n2 0 0.03 0 0 0 0 j E Ave 0.02 0 0.02 0 0 0 0 Min 0 0 0 0 0 0 0 i Maa 0.02 0 <0.03 0 0 0 0 l -1 g Ave 0.02 0.02 0.02 0 0 0 0 l Min 0 0 0 0 0 0 0 i Man 0.02 0.04 <0.03 0-0 0 0 E Ave 0.02 0 0.03 0 0 0 0 Min 0 0 0 0 0 0 0 Man 0.03 0 0.09 0 0 0 0 ( E Ave .0.02 0.02 0.02 0 (2) (2) 0 Min-0 0 0 0 (2) (2) 0 Max 0.05 0.02 0.03 0 (2) (2) 0 y E Ave 0.02 0 0.02 0 0 0. O Min 0.01 0 0 0 0 0 0 Max 0.02 0 0.04 0' 0 0 0 l ivalues lower than the minina detectable level of 0.02 ppe are shown sa 0. (2) Welt dry att year,

Attachme:I i to GE.il'ilmington letter to his Merri Horn d:ted 06/21/90. Page 21 of 31 is TABLE-5-28 ENVIRONMENTAL MONITORING WATER-TABLE AOUIFER - FORMER ZIRCONIUM SIMDGE STORAGE AREA ACTIVITY CONCENTRATION (10'glALPHA (10}'uC1/ce) GR0 GR $ 8 ETA uti/cc) wit bit 1 GNAT 10W I1B M t2 EM M HH W Z8 1983 <0.04 <0.03 <0.04 0.31 0.11 0.78 1984 0.03 <0.02 <0.05 0.20 <0.11 0.65 1985 0.05 0.02 0.21 0.19 0.03 0.38 1986 0.04 <0.02 0.08 0.15 <0.13 0.19 1987 0.04 <0.02 0.08 0.17 <0.15 0.23 1988 0.04 <0.03 0.10 0.15 <0.14 0.17 1989 0.04 <0.02 0.09 0.16 <0.09 0.40 2C 1983 1.57 0.47 2.90 0.81 0.57 1.20 1984 0.10 <0.02 0.47 0.26 <0.13 0.69 1985 0.08 <0.02 - 0.27 0.17 <0.11 0.45 1986 0.05 <0.02 0.09 0.30 <0.14 1.40 1987 0.05 <0.02 0.14 <0.16 <0.15 <0.17 1988 0.04 <0.02 0.09 0.17 <0.14 0.42 1989 0.02 <0.02 0.03 0.15 <0.10 0.28 20 1983 0.03 <0.03 <0.04 0.14 <0.13 - 0.16 f 1984 0.03 <0. 0.' O.07 0.19 0.10 0.70 1985 0.05 <0.03 0.08 0.17 <0.11 Oc33 1986 0.12 <0.04 0.20 0.16 <0.13 0.24 1987 0.05 0.04 0.08 0.17 <0.15 0.26 1988 0.05 0.03 0.10 0.17 <0.13 - 0.33 1989 0.05 0.03 0.10 0.15 <0.10 0.46 ZE 1983 0.22 0.04 0.66 0.41 <0.13 0% 1984 0.08 <0.02 0.48 0.18 <0.13 0.33 1985 0.12 <0.03 0.34 0.19 <0.11 0.36 l 1986 0.06 <0.02 0.14 0.16 <0.12 0.29 t 1987 0.04 0.02 0.08 0.17 <0.15 0.32 1988 0.04 0.02- 0.13 0.16 <0.14 0.20 1989 0.05 <0.02 0.10 0.15 <0.10 0.29 27 1983 0.02 0.02 <0.03 0.16 <0.13 0.21 1984 0.04 <0.02 0.07 0.33 <0.11 2.50 1985 0.09 <0.02 0.27 0.20 <0.11 0.43 1986 0.13 <0.04 0.26 0.16 <0.13 0.18 ig:y1 19881 1989 0.03 <0.03 <0.03 <0.12 <0.11 <0.13 20 1983 <0.02 <0.02 <0.03 0.14 <0.13 0.18 r 1984 0.07 <0.02 0.50 'O.22 0.03 0.91 1985 0.03 <0.01 0.06 0.15 <0.11 0.23 1986 0.03 0.02 0.06 0.16 <0.13 0.22 1987 0.04 <0.03 0.07 0.17 <0.15 0.29 7 1988 0.04 <0.02 0.08 0.17 <0.14 0.27 a 1989 0.06 <0.02 0.12 0.17 <0.10 0.34 I elt dry att year, W r i ---y-+ w g e w+- y

t l At!achmerst 2 to GE.lf'ilmirtgton' letter to his, hierri Horrt dated 06/21/90. Page23of.51 TABLE 5-30 4 ENVIRONMENTAL MONITORING I WATER-TABLE AOUIFER - CALCIUM FLUORIDE SLUDGE STORAGE AREA IN NORTHWEST PART OF GE-WILMINGTON SITE 1 URAN _UM CONCENTRATION i (ppm)1 ) Well Desinostion M M .tig ,12M .itg .12g 3 CaF*1 Ave 0.02 0 0 0 0 0 0 Min 0 0 0 0 0 0 0 Max 0.02 0 <0.03 0 0 0 0 CaF 2 Ave 0.02 0 0 0 0 0 0 Min 0 0 0 0 0 0 0 Max 0.02 0 <0.03 0 0 0 0 CaF 3 Ave 0.02 0 0.02 0 0 0 0 Min 0 0 0 0 0 0 0 Max 0.02 0 0.03 0 0 0 0 -CaF 4 Ave 0.02 0 0.03 0 0 0 0 Min 0 0 0 0 0 0 0 Max 0.02 0 0.04 0 0 0 0 ivalues lower than the minisum detectable tevel of 0.02 ppm are shown as 0, s 3-

G. ..w' N Onn_ W 3' 2 ' N ~ 9 C M Q M M d 5 R E W 3 f r-M 6.. g m C ~- n n n n 9 9.r 9 e O C m. N. w Z M e W N -e. E M M M CD' W Z o O 4 y a m --..a 9999999 9999999 9 94999 9999999 e W m e N N .be Ogmgmgg 9gmg#gg Mgege MgNg-gg 9 N N 9 N 9 o o H Z 8 9 4 A A A A A A A A A A A A A A A A A M p 7 .o.o.o.o.o.o.o o o.o.o.o.o.o .c.o C".O.o.o.o .o.o.o.o.o.o.o = s g tp - ooooooo.. ooooooo oooooon ooooooo ~ 9 C d f N N O* N W W be NNh=NNNN be N O* N N N N NNWNNNN ^ $. 2 O 3 M 2 o Z f A A A A A A A A A A A A A A A A A A A A A A A A .o.o.o.o.o.o o o.c o o.o.o o .o.o.o.o.o o.o o.o.o.o.o o.o w o af ut u ooooooo. c y I ooooooo ooooooo ooooooo A -* N N N N N W NNNNNNN .*NNaNNN NNNNNNN n> ta ~o Z O - r- 'A A A A A A A A A A A A A A A A A A A A A n 8 O Z P .o.o.o.o.o.o.o .o.o.o.o.o.o.o .o.o.o.o.o.o.o .o.o.o.o o.o.o .n > g s N N ON N N g M x x o H A A A A A A A A A A A A A N .o.o.o.o.o.o.o .o.o.o.o.o.o.o .o.o.o.o.o.o.o .o.o.o.o o.o.o Z m Z N a s N.a m -m -n .a.a.a egp.a.a.a e -e m -m.a.a N a -a a.a a a.a D NwoNew@ NWmo@W@ WMPWSNo NWWewwN ^ p

o. 8 A A A A A A A A A A A A A A A A

• A A A

A A A A A A A Q o.o.o.o.o.o.o c.o.o.o.o.o.o .o.o.o.o.o o.o .c.o.3.o.o.o.o w w M .a.aaaaee .a m m -a -e -e -e -s.a.a a a -m a .a a a.a -e a e f%)O' W N O' Y O* o O* W Y O* b0 O' o O'* W N 0% O* W f%p & W b6 Om W W 9 -u= M Q A A A A A A A A A A A A A A A D > d o.o.o.o.o.o.o .o.o.o o..o.o.o .o.o.o.o.o.o.o .o.o.o.o.o.o.o Q .4 e.a b$ f%s -4.a OuS.a 6 .e N 9%p & -a f%) e -m.a.a w f%).a buf M.4 &.e Om @.* M W & W f%p& S b8N & W .* m @ 9 O' O' O* @ f%s W N & CD Q tg 'tr n M M C em. , e

? to GE Wilmington letter to Ms. Alerri Horn dated 06/21/ 90. Page 34 of $1 ] TABLE 5-32 ENVIRONMENTAL MONITORING SOIL URANIUM CONCENTRATIOR (ppm) $anple $lte 1983 1984 1985 1986 Desfonetton1 fxg E1,g gg gyg Ein gg egg gji.D BE e.Y8 E1D BE i 1 0.45 0.38 0.63 0.45 0.16 0.67 0.55 0.25 1.23 0.65 0.40 1.04 2 0.34 0.23 0.54 0.27 0.16 0.41 0.15 <0.03 0.25 0.24 0.22 0.28 3 0.25 0.23 0.33 0.41 0.32 0.45 0.58 0.32 1.08 1.21 0.19 3.88 4 0.34 0.19 0.54 0.35 0.24 0.42 0 24 <0.03 0.38 0.21 0.13 0.28 5 0.27 0.09 0.54 0.26 0.13 0.45 0.32 0.22 0.41 0.28 0.16 0.48 6 0.25 0.12 0.43 0.20 0.09 0.29 0.22 <0.03 0.32 0.19 0.13 0.28 7 0.39 0.19 0.70 0.20 0.12 0.38 0.48 0.22 1.05 0.25 0.13 0.39 8 0.44 0.16 0.79 0.34 0.08 0.47 0.51 0.16 0.92 0.30 0.16 0.49 11 0.40 0.16 0.89 0.20 0.03 0.36 0.25 0.09 0.40 0.25 <0.10 0.31 12 0.50 0.12 1.26 0.26 0.06 0.58 0.82 0.13 1.94 0.57 0.22 1.24 13 0.41 0.26- 0.53 0.43 0.28 0.74 0.26 0.12 0.37 0.42 0.17 0.67 15 0.41 0.12 0.63 0.34 0.16 0.51 0.58 0.22 1.24 0.52 0.13 1.21 16 0.27 0.09 0.47 0.22 0.09 0.40 0.38 0.09 0.79 0.20 0.13 0.25 17 0.42 0.23 0.67 0.25 0.06 0.38 0.32 0.13 0.40 0.28 0.13 0.48 18 0.30 0.12 0.42 0.20 0.06 0.32 0.38 0.16 0.70 0.30 0.19 0.55 1A 0.77 0.30 1.55 0.89 0.35 2.24 2.18 <0.03 4.64 8.18 1.90 15.33 202 9,99 0.29 19.70 49.84 7.58 139.00 212 4.73 0.92 8.54 25.12 12.43 47.40 i sample $lte 1987 1988 1989 Desinnation elt eld BE 111 Ela BE e.Y.R illD BE 1 1.50 0.61 2.74 0.83 0.19 1.46 0.42 0.26 0.64 2 0.26 0.13 0.55 0.69 0.14 2.22

0. 73 0.21 1.26 3

0.35 0.14 0.70 0.31 0.01 0.69 0.55 0.16 1.16 4 0.20 0.18 0.22 0.24 0.16 0.28 0.17 0.07 0.31 5 0.20 0.11 0.40 0.15 0.06 0.27 0.51 0.11 1.60 6 0.14 0.04 0.34 0.10 0.03 0.22 0.41 0.03 1.47 7 0.27 0.20 0.41 0.22 0.14 0.29-0.28 0.10 0.64 8 0.48 0.19 0.79 0.45 0.29 0.58 0.38 0.19 0.55 11 0.31 0.22 0.38 0.30 0.19 0.45 0.31 0.10 0.87 12 0.42 0.26 0.65 0.58 0.48 0.82 0.49 0.37 0.91 13 0.12 0.10 0.16 0.26- 0.12 0.42 0.35 0.11 0.52 15 0.32 0.19 0.45 0.46 0.32 0.72 0.41 0.14 0.98 16 3.28 0.21 0.38 0.21 0.10 0.29 0.19 0.06 0.33 17 0.53 0.16 1.32 0.41 0.28 0.56 0.70 0.34 1.64 18 0.38 0.15 0.72 0.43 0.07 1.02 0.34 0.14 0.92 1A 2.41 1.12 4.44 9.00 4.72 18.30 23.49 14.75 39.10 20 73.94 5.97 157.00 8.82 4.47 15.30 11.83 4.12 24.38 21 11.59 0.47 33.80 9.53 3.96 27.15 12.33 6.13 16.80 - 1 Reference Figure 5 8 for location. 2Added to program in 1985. I

1 L j 4ttachment 2 to GE Wilmington letter to his, hictri Horn dated 06/31/90. Page3$of$1 i TABLE 5-33 ENVIRONMENTAL MONITORING i I SEDIMENT IN EFFLUENT CHANNEL URANIUM CONCENTRATION (ppm) t Sanple LocatIoni ,Qgi j,fg M ,12g jf,gg no. 4 (tanoon outfall) Ave 7.4 4.i 3.6 25.7 2.5 F Min 5.5 1.8 0.9 10.2 0.8 i ' Max 9.3 7.3 8.7 41.2 4.3 i t No. 5 (Above dam) Ave 2.0 7.3 3.5 3.3 - 2.3 Min 1.2 1.2 1.9 1.9 1.1 Man 2.9 13.5 4.9 4.7 3.6 No. 6 fBelow dami Ave 2.8 2.2 7.9 1.7 10.8 Min 1.7 1.8 2.0 1.4 1.0 Max 4.0 2.6 10.9 2.0 20.7 1Not In m \\ltorIns Program prior to 1905. t f t t 5 E 0 l

! to GEMilmington letter to hh. Aterri Horn dated 06/31/90. Page 26 c.f $1 TABLE 5-34 ENVIRONMENTAL MONITORING NITRATE SifIPMENTS TO FEDERxL PAPER BOARD COMPANY. INC. 1983 1984 1985 Cross U Cross U Cross U L2tfLIED Allt.$ 1112 . EEL LLEb.8.it11 .E!!!L Llafit.1t18 .REL Clarffler Ave <9.50 15.00 1.12 9.50 20.25 0.60 6.47 16.00 0.82 Studge Min <8.00 <10.00 0.40 7.00 11.00 0.30 4.90 13.00 0.70 Max <10.00 <30.00 2.20 <13.00 30.00 1.20 <8.00 19.00 0.90 canal Ave 17.00 7.75 0.80 9.32 10.00 0.60 10.68 18.50 0.40 sludge Min <8.00 6.00 0.50 <5.30 4.00 0.30 5.70 11.00 0.30 Max 30.00 10.00 1.10 14.00 20.00 0.90 14.00 29.00 0.60 New Bay Ave <0.04 5.15 0.08 6.65 <0.17 <4.10 Liquidi Min <0.03 <4.50 <0.03 <3.00 <0.16 <3.30 Max <0.05 6.70 <0.17 8.30 <0.17 <4.60 New Bay Ave 10.00 9.50 0.95 11.00 9.00 0.85 8.75 12.50 0.62 Sludge Min <10.00 8.00 0.70 10.00 6.00 0.50 <7.00 8.00 0.50 Max 10.00 10.00 1.20 <13.00 11.00 1.10 11.00 17.00 0.90 North Ave 0.05 5.17 0.07 4.55 0.16 <4.10 Basin Min <0.04 <4.60 <0.02 <3.00 <0.14 <3.30 Liquidl Max 0.08 5.70 <0.17 7.50 <0.19 <4.60 North Ave 15.00 17.50 0.70 16.50 12.75 0.65 16.12 12.75 0.A5 Basin Min <10.00 10.00 0.40 8.00 6.00 0.40 <7.50 9.00 0.80 sludge Max 20.00 20.00 0.90 20.00 20.00 1.00 20.00 15.00 0.96 Truck Ave 5.72 <122.50 6.75 95.50 4.57 38.67 Tralleri Min <4.90 <110.00 0.81 12.00 3.00 14.00 Max 7.00 <140.00 11.00 <130.00 7.00 59.00 Cape Fear Ave <0.62 <4.92 <0.68 <4.73 <0.21 4.10 Riverl-Min <0.50 <4.50 <r.04 <4.20 <0.15 <3.30 Upstream Max <0.71 <5.70 <1.70 <5.10 <0.26 4.60 Cape Fear Ave <0.67 <4.92 <0.65 5.00 <0 19 <4.10 River 1 Min <0.66 <4.50 <0.05 <4.20 <0.16 <3.30 Downstream Max <0.68 <5.70 <1.40 6.50 <0.21 <4.60 iura.lta concentration not required at these sample points. Notes Liquids Gross Alpha 10*7 uCl/mt, Gross Beta 10*8 utt/ml. Sludge

• Cross Alpha pCl/gm, Gross Bete pCl/gm.

i l

3 ? Attachmen! 2 to GE Wilmington letter to his. hierri Horn dated 06/21/90. Page 27 of $1 l l TABLE 5-34 (CONTINUED) l ENVIRONMENTAL MONITORING NITRATE SHIPMENTS TO PEDERAL PAPER BOARD COMPANY. I& 1986 1987 1988 Gross 1 Gross i Gross 1 I Location e.laba AL.it. .mL e.laba litt. 35E. 6.Labt .31.11. IEEL. Clarifter Ave 9.00 22.50 0.82 9.50 13.75 1.05 8.50 16.00 0.<5 $ludge Min 7.00 15.00 0.40 <6.00 7.00 0.60 <7.00 13.00 0.40 Max 11.00 26.00 1.00 13.00 24.00 1.60 13.00 19.00 0.70 Canat Ave 13.25

• o.25 0.45 9.25 7.75 0.30 9.50 11.00 0.48 tludge Min

<10.00 8.00 0.40 <6.00 6.00 0.20 6.00 9.00 0.30 Max 1" v0 23.00 0.50 <12.00 9.00 0.50 14.00 15.00 0.70 L NewBa{ Ave <0.18 4.47 0.27 4.78 0.14 4.25 Liquid Min <0.14 2.60 <0.21 <4.60 0.12 <3.70 Max <0.22 6.40 0.32 5.10 <0.17 <4.80 New Bay Ave 11.75 18.75 0.60 13.75 16.50 0.72 13.25 13.25 0.62 sludge Min 9.00 16.00 0.50 57.00 15.00 0.70 11.00 11.00 0.40 i Max 16.00 24.00 0.70 22.00 17.00 0.80 14.00 16.00 0.70 North Ave <0.15 3.93 0.20 4.82 <0.17 4.45 Basin Min <0.12 3.30 0.16 <4.20 <0.13 <3.70 Liquidi Max <0.20 4.40 <0.25 5.80 <0.25 5.10 North Ave 18.20 13.60 0.95 20.00 16.75 1.05 14.75 10.50 0.45 Basin Min <0.00 0.00 0.70 15.00 13.00 0.80 11.00 4.00 0.30 i sludge Max 31.00 21.00 1.30 23.00 24.00 1.20 18.00 15.00 0.60 . Truck Ave 13.52 38.50 5.62 30.75 5.05 29.58 Tralleri Min 3.60-33.00 2.60 16.00 2.80 <2.30 Max 24.00 42.00 14.00 47.00 7.10 49.00 Cape Ave <0.13 <4.15 River (ear <0.14 <4.55 <0.13 <4.07 Min <0.12 <4.10 40.14 <4.50 <0.12 <3.70 Upstream Max <0.14 <4.20 <0.14 <4.60 <0.14 <4.30 Cape [ ear Ave 0.15 4.15 <0.16 5.25 <0.19 <4.07 i River' Min 0.13 <4.10 <0.15 - 44.60 <0.15 <3.70 Downstream Max <0.17 4.20 <0.17 5.90 <0.27 <4.30 iuranlun concentration not required at these aanple points. Notes Liquids Cross Alpha 10*7 uCl/st, Gross Beta 10*8 uCl/mt. Studge

• Gross Alpha pCl/gm, Gross Bete pCl/gm.

.I i.

g Attt.shmert 2 to GE N'ilmington letter to Ms. hierri Horn dated C6/21/90. P ge 28 of $1 n I, l h.,t 4 6 TABLE 5-34 (CONTINUED)- I J EHyIRONMENTAL MONITORING NITRATE SHIPMENTS TO FEDERAL PAPER BOARD COMPANY. INC. 1989 cross u 5 location h h g Clarifter Ave =8.75 18.50 0.82 i Bludge Min <6.00 10.00 0.40 h Mu-10.00 26.00 1.30 Canal Ave' 11.75 13.50 0.50 Sludge Min <9.00 8 00 0.20 Max 17.00 19.00 0.80 i NewBay Ave 0.17 4.53 Liquid Min <0.15 <3.40 + Max <0.19 5.20 New Bay Ave 20.25 14.75 0.55 [ Sludge Min

• 5.00 13.00 0.40 Max 27.00 16.00 0.70 North Ave

<0.15 5.08 + Dasin Min <0.10. '<3.40 Liquidi Max <0.18 6.70 North Ave 25.25 14.75 0.75 Basin Min 17.00 13.00 0.40 I sludge Max 37.00 16.00 1.10 l Truck Ave 6.75 33.00 Traiterl Min 1.70 18.00 Max 13.00 56.00 Cape { ear Ave <0.14 4.55 River Min <0.13 <2.30 Upstream Max <0.15 8.30 Riverjoar-Cape Ave <0.14 4.20 Min <0.13 <2.30 Downstream-Max <0.15 7.20 i 1 ranium concentration not required at these sample points. U Note Liquids Cross Alpha 10*? uCl/st, cross tete 10 8 uCl/mt. Studge Gross Alpha pCl/gm, Cross Beta pCl/gm. i

- Attachme

:t 2 t> GE.Wilmington letter to Ms. Merri Horn d:ted 06/21/90.

P:ge 29 of 51 m. [I-TABLE 5-35 F -. EFFLUENT MONITORING i FLUORIDE DISCHARGES TO ATMOSPHERE l PUEL MANUFACTURING' OPERATION o r, Altborne Total Discherped fluorides-Volume Fluoride Discherped Per fear Concentratlog l M (arama) (x 1013 ee) (n.teraarm=ar a) t e 1983 2744 0.731 3.8 p 1984 $92 1.056 0.6 1985 685 1.073 0.6 1986 1647 1.194 1.2 1987 3152 1.371 2.3 2 1988 4803 1.424 3.4 1989 2960 1.025 2.9 4 t I l j

I. ' Att:chment 2 to GE-Wilmington letter to Ms. Merri Horn dated 06/21/ 90. Page 30 of $1 TABLE S-36 EFFLUENT MONITORING - NPDES PERMIT FINAL PROCESS LAGOON EFFLUENT vott>t (103 gallons / DH PANGE FLUORIDE AMMONIA dev) J units) (m) (m) IW M E M E E m E M E!! E 1978 576 2000 6.1 9.0 2.77 0.98 11.00 3.75 0.36 19.02 1979 642 2296 6.0 9.0 3.52 1.30 55.00 5.47 0.09 30.90 1980 506 2080 6.0 9.0 3.78 2.00 12.00 3.58 0.85 11.42 1981 561 1974 6.3 9.0 3.91 1.50 9.70 5.49 0.10 26.70 1982 551 1786 6.0 8.9 2.49 0.64 8.40 4.13 0.12 60.00 1983 476 746 6.2 8.9 1.79 0.44 4.80 1.52 0.12 11.90 1984 505 954 6.1 8.4 2.07 0.82 7.25 2.59 0.05 21.30 1985 501 1303 6.1 8.4 1.88 0.45 7.38 4.22 0.23 16.62 1986 4 74 759 6.4 8.9 1.89 0.43 5.59 3.48 0.11 17.99 1987 500 830 6.4 8.5 2.59 0.75 11.83 3.05 C.25 14.23 1988 534 1012 6.2 8.9 4.60 1.74 13.39 6.25 1.09 18.17 19891 516 1080 6.0 8.4 3.68 1.68 8.64 6.49 0.36 19.51 NITR1TE NffRATE COPPER WICKtt (m) ( run) (m) (nom) IM M M W M M M M M E M M E 1978 2.88 0.26 31.46 8.98 0.66 51.33 <0.013 <0.010 0.069 <0.014 <0.010 <0.050 1979 1.56 0.33 11.92 12.79 0.88 38.05 <0.011 <0.010 0.031 <0.011 <0.010 0.037 1980 3.11 0.33 20.86 19.47 0.53 122.57 <0.011 <0.010 0.035 <0.012 <0.010 0.030 1981 3.81 0.26 19.50 25.31 4.78 68.58 <0.018 <0.010 0.060 <0.019 <0.010 0.060 1982 2.32 0.23 25.40 35.13 7.21 160.00 <0.017 <0.007 0.166 <0.019 <0.001 0.060 1983 0.96 0.09 4.20 25.90 7.13 86.00 0.012 <0.010 0.050 0.012 <0.005 0.028 1984 1.87 <0.01 6.90 25.83 5.64 $4.30 0.012 0.009 0.045 0.010 <0.005 0.076 1985 1.75 0.10 7.48 26.18 5.88 177.08 0.011 <0.010 0.025 0.009 <0.005 0.030 1986 3.20 0.13 18.35 23.62 3.78 93.90 0.012 <0.005 0.060 0.009 <0.005 0.030 1987 2.90 0.17 12.47 35.03 4.57 130.02 0.015 <0.005 0.060 0.015 <0.005 0.060 1988 4.41 0.49 14.70 27.43 8.02 82.29 0.019 <0.005 0.103 0.011 <0.005 0.051 1989 6.10 0.03 30.97 44.35 13.49 261.41 0.014 0.007 0.040 0.013 <0.005 0.050 CHROMlUM TITAWitM TEMPERATURE (m) (m) (DC) IE M !Wi E M tWi E M tilft W 1978 <0.013 <0.010 0.125 20.8 10.0 29.0 1979 <0.013 <0.010 0.840 20.1 9.0 29.0 1980 <0.011 <0.010 0.043 20.1 6.0 31.5 1981 <0.018 <0.005 0.082 19.5 7.0 31.0 o 1982 <0.013 <0.005 0.068 <0.282 <0.010 0.500 19.1 5.0 28.0 1983 0.012 <0.010 0.090 0.042 <0.005 0.240 18.5 3.0 28.0 1984 0.010 <0.005 0.041 0.029 <0.005 0.240 18.7 5.0 31.0 1985 0.010 <0.010 0.050 0.016 0.000 0.160 19.1 2.0 27.0 1986 0.010 <0.001 0.020 0.012 0.003 <0.120 19.2 4.0 29.0 1987 0.010 <0.005 0.030 0.011 <0.005 <0.120 18.5 6.6 28.0 1988 0.010 0.002 0.050 0.016 <0.005 0.060 18.0 3.0 27.0 1989 0.011 <0.005 0.060 0.018 <0.005 0.090 20.1 4.0 29.0 10oes not 13ctude a pH reading of 2.04 which occurred on May 17, 1989 due to nechanical fatture of pH adjustment equipment which was corrected the next day,

i g, Att:chme:t 2 o GT-Wilmington letter to Ms. Merri Horn dated 06/21/90. P:ge 31 of 51 l i I I W LE 5-37 l EFFLUENT MONITORING i [ FINAL PROCESS LAGOON EFFLUENT (PPID) i-l TOTAL SUSPENDED I: CHLORIDE' SULFAtf1 PHOSPMAtt $0 LIDS lc 18E AXL tul! 281 AY1 51!! B65 AY1 51!! B&E AYL !!1!! B65 f 1983 189 60 310 228 119 369 0.74 0.10 3.07 30 3C 30 1984 154 50 238 287 45 600 0.58 0.18 1.04 9 0 18 1985 149 82 288 232 119 682 0.63 0.21 1.24 16 2 50 1986 205 124 265 299 140 463 0.67 0.05 0.98 10 1 21 1987 221 14 386 262-150 432 0.79 0.31 2.85 17 8 42' 1988 202 122 265 162 117 215 0.51 0.07 1.20 15 <10 28 19892 224 0 382 0.32 0.14 0.72 <10 s10 <10 r TOTAL DIS $0LVED 8IOCHEMICAL CHEMICAL SOLIDS TDTAL SOLIDS OXYGEN DEMAND OXYGEN DEMAND , _ALKAllWITY I f 18E AY1 Bill BLE AY1 51!! 585 - AYi 51!! 581 8Yi Bill 565 AEL tu!! B65 1983i 778 575 933 793 577-957 7 3 10 44 23 69 108 40 236 1984 - 948 670 1434 935 669 1438 8 5 14 49 33 82 138 96 164 1985 750 461 1465-770 478 1489 7 1 13 35 20 56 116 60 212 1986 678 89 1052 684 97 1065 6 4 17 33 6 80 107 52 131 r 1987 87V 209 1244-951 803 1250 8 <1~ 15 37 20 59 80 ' 43 126 1988 677 339 1018 687 345 1023 8 <1 18 48 <5 86 62 0 191 1989 739 478 982 747 490 988 7 2 32 48 143 126 22 234 i i ulfate not in monitoring progran after 1988. l p 21989 data for chloride, phosphate vd total suspended solids include 6 sample results as compared with previous typical 12/ year. i 33 (

i 14ttachment 2 to GE.M'ilmi:gton letter to Ms. hierri Hora d:ted 06/21/90. P:ge 32 of $) { R, l rc l C' TABLE 5-38 ? o . EFFLUENT MONITORING LI J e q-Final' Process-Lacoon Outfall - Biomonitorinci p. .i Toxicity Test (Chronic) [ Toxicity Test-(Acutel_ Sample Date LC. 8 Mortality (%). Percent Survivability ,e ] 8-88 90 40

• m.

9-88 95 0 100 8 l 10-88 90 50 $2 PASS-11-88 90 25 92 8 I 12-88 95 5 100 - PASS L:. t f' 1-89 95 0 100 - PASS 83 - PASS 4-89 ~~ e ,+ t 100 - PASS h i-7-89 100 - PASS' 10 -- i i r ~*Testforganism - Ceriodaphnia dubia, L! 18LC, = % concentration:of effluent at which 50% of the test. ,1 organism 1(Ceriodaphnia dubia) die; >90% LC. and <20% mortality 1scacceptable. .i 8 Survivability criteria net but test organism had a low reproduction. rate in. control sample, t I i u- 'e t i -f .g W' to GE \\\\'llrnington letter to his, hierri llorn dated 06/21/90. Page.33 of.%1 TABLE 5-39 EFFLUENT MONITORING SANITARY WASTE TREATMENT SYSTEM EFFLUENT StifLEABLE BIOCHEMICAL CH(MICAL Y0ttME W.ATTER OKYGEN DEMAND OXYGEN DEMAND (103 pal /dey) (mL/ L t ter) (mem/L) (mem/L) ILAa M Blu Bal M B1H BM M t.13 BM M B1H BM 1983 15 1 41 No tre No tre frece C 7 36 52 <i5 134 h 1984 21 7 66 Trace Trace trace 11 4 21 92 32 157 1985 23 3 70 Trace trace Trace 9 2 21 73 16 160 e 1986 17 1 46 Trace trace Trace 10 2 26 50 23 85 1987 16 2 43 Trace frece frece 7 1 21 32 <10 47 1988 19 1 frece Trace Trace 4 <1 10 30 5 78 1989 20 2 38 Trace trace Trace 5 1 10 40 8 118 TOTAL AMMONIA TOTAL $USP(NDED _DH Renee N!TROCEN SOLIDS TOTAL RitIDUE (untts) (mem/L) (mem/L) (mem/L) ILA.a 21H BM M Bih BM M E1H BM M Bl3 BM 1983 7.0 8.6 31.5 16.3 45.7 8 5 11 382 322 445 1964 7.3 8.4 36.8 14.5 <9.5 26 11 58 476 383 587 1985 7.2 8.0 22.5 2.7 52.3 11 5 16 310 102 429 1986 7.1 8.4 21.6 1.5 61.2 10 1 18 353 6 640 1987 6.9 7.9 13.2 1.0 30.8 8 4 13 446 357 630 1988 7.2 8.1 10.3 0.4 27.0 10 2 18 458 344 766 1989 6.4 7.8 12.2 1.5 27.8 10 1 26 435 318 682 t

l Attachme:1. 2 to GE.Wilmington letter to Ms. Merri Horn dated 06/21/90. P:ge 34 of $1 l TABLE 5-40 TREATED = PROCESS WASTE DISCHARGES TO NORTHEAST CAPE FEAR RIVER COMPARISON WITH NPDES PERMIT CONDITIONS kPDES ACTUAL RESULis PERMlf SLMMAtl2tb BY YEARI CHEM!tAL PARAMETttt CONDifIONS.12$}.19$h M M,12$J,,12$$,12l2 Fluoride Daily Maxi m 160 22 33 27 20 24 52. 44 (pounds) Monthly Average 80 7 9 8 8 11 20 16 Nitrogen Daily Maxi u 210 79 111 151 97 164 157 199 (total of conbined nitrogen in Monthly Average 145 28 31 35 36 44 68 l e m onia, nitrate and nitrite) (pourWs) Chromium - Daily Masl u 1.0 0.43 0.25 0.20 0.11 0.16 0.15 0.23 (pounds) Monthly Average 0.5 0.05 0.04 0.04 0.04 0.04 0.04 0.05 Copper Dolly Maxinun 2.1 0.21 0.24 0.17 0.24 0.29 0.42 0.18 (pounds) Monthly Average 1.0 0.05 0.05 0.04 0.05 0.06 0.09 0.06 Nickel Dalty Maxinun 1.0 0.12 0.42 0.12 0.15 0.31 0.27 0.22 (pounds) Monthly Average 0.5 0.05 0.04 0.04 0.04 0.07 0.05 0.05 Volyne Daily Maxinun 2400 746 954 1303 759 830 1012 1080 (103 gallone) Monthly Average 1800 477 5 05 501 4 74 500 534 510 pH Range 6.0-6.2 6.1-6.1 6.4 6.4 6.2 2.04 (units) 9.0 8.9 8.4 8.4 8.9 8.5 8.9 8.4 1Average valuta reported are the annual average of monthly values. 1989 values are reported through i June 30; the new permit became offective July 1. Due to a mechanical fatture of pH adjustment equipment which was corrected the next day, a pH reading for May 17, 1989 was recorded as 2.04, a value below the permit condition. I l

_ _ _ _ _ _ _ _ _ 13 GE-Wilmington letter to Ms. Merri Horn dated 06/21/90. P:geJ%cf3J TREATED PROCESS WASTE DISCHARGES TO NORTHEAST CAPE FEAR RIVER j COMPARISON WITH NEWLNPDES PERMIT CONDITIONS ' NPDES PERMIT ACTUAL RESULTS1 CHEMICAL PARAMETERS CONDITIONS JUL-DEC_1989 Fluoride Daily Maximum 71 40 (pounds) Monthly Average 37 15 Nitrogen Daily Maximum 330 166 .(pounds) Monthly Average-164 91 Chromium Daily Maximum 5.42 0.07 (pounds) Monthly Average 4'10 0.05 Copper Daily Maximum 6.74 0.16 (pounds) Monthly Average 4.97 0.07 i Nickel (pounds) Daily Maximum 8.02 0.22 (pounds) Monthly Average 6.15 0.06 (parts per billion) Daily Maximum 534 40 Volume Monthly Average 1800 521 (108 gallons) pH Range 6.0-6.3-(units) 9.0 8.4 Total Suspended Daily Maximum 1825 53 I Solids (pounds) Monthly Average 1068 20 011~and Grease Daily Maximum-186 40 [ (pounds) Monthly Average 113 26 Silver. Daily Maximum 0.80 0.03 (pounds)- Monthly Average 0.60 0.02 Cadmium (pounds) Daily Maximum 0.32 0.06 -(parts per billion) Daily Maximum' 21 10 Lead: . Daily Maximum-1.3 0.55 -(pounds) Monthly Average 1.0 0.11 Zinc Daily Maximum' 4.90 1.06 (pounds) Monthly Average 3.50 0.13 -Cyanide (pounds). Daily Maximum 0.8 0.11 t (parts per billion) Daily Maximum 53 20 2 Average values reported-are the annual average of monthly = values'- all process' waste discharges met permit conditions. to GE Wilmington letter to Ms. Merri Horn dated 06/21/90. Page 36 of $1 TABLE 5-41 L TREATED SANITARY WASTE DISCHARGES TO NORTHEAST CAPE FEAR RIVER COMPARISON WITH NPDES PERMIT CC iDITI,QHE NPDES ACTUAL kt90LTS PERMIT stsenRf2ED BY YEARi CHEMICAL PARAMffERS CONDITIONS @ g g g g g g Blochemical Oxygen Demenct Deity Maxipum 45 36 21 21 26 21 10 10 (parts per million) Monthly Average 30 18 12 9 10 7 4 6 Total suspended Solids Delty Maximum 45 11 58 16 18 13 18 26 (parts per alltion) Monthly Aversee 30 8 26 11 10 8 10 17 Volyne Delty Maxinum 100 41 66 70 46 43 55 38 (1(P settons) Monthly Aver *De 75 15 21 23 17 16 19 19 pH Renee 6.0 7.0-7.3* 7.2* < 7.1 6.9-7.2 7.6-(units) 9.0 8.6 8.4 8.0 8.4 7.9 8.1 7.8 1 verage values reported are the enruel everage of monthly values. 1989 values are reported through A June 301 the new permit became of fective July 1. The total suspended solide for the month of July in 1984 was 58 ppm, a value above the permit condition. t i e +

{i: '. Attachment 2 t3 GEMilmingt:n letter to Ms. Merri Horn d:ted 06/21/90. Page 37 of 31 TREATED SANITARY WASTE DISCHARGES TO' NORTHEAST CAPE FEAR RIVER !{. COMPARISON WITH NEW NPDES PERMIT CONDITIONS NPDES PERMIT ACTUAL'RESULTS1 CHEMICAL PARAMETERS CONDITIONS JUL-DEC 1989 . Biochemical Daily Maximum 45 10 Oxygen Demand Monthly Average 30 5 (parts per million) g Total Suspended Daily Maximum 45 20 [- M Solids Monthly Average 30 7 (parts:per million) f Dissolved Oxygen Daily Minimum 5.0 5.1 C1 (parts per million) Monthly Average 5.0 6.2 L s Volume Monthly Average 75 21 (108 gallons) L pH Range 6.0-6.4-(units). 9.0 7.8 '* Average. values reported are the annual average of monthly l Evalues -'all sanitary waste discharges-met permit conditions. s 'N k f' s 5 i

b . Attachmect 3 to GE Wilmington letter to Ms. Merri Horn dated 06/31/90. Page 38 of $1 .r L I V. TABLE 5-42 EFFLUENT MONITORING NITRATE SHIPMENTS TO FEDERAL PAPER BOARD COMPANY. INC. CHARACTERISTICS Total Voltane pH Range Amunonle Nitrate J,qt fnelIons) _ funitt) f nm) ftem) E10 BA8 8.YR Bla 585 ht B10 585 I p -1983 5,539,000 6.1 7.5 4,279 1,945 6,992 25,692 16,884 44,500 1984 4,561,200 6.3 7.5 5,112 2,860 6,992 19,430 8,379 29,251 1985 4,407,300 5.8 7.6 4,542 2,777 5,962 17,826 11,442 32,328 9 1986 4,435,200 5.4 7.8 3,411 2,188 4,630 15,819 10,476 23,353 ? 1987 7,263,900 6.0 8.2 2,238 1,871 2,930 12,705 4,145 18,726 1988 7,446,600 6.0 7.7 1,914 1,344 2,395 14,187 8,712 19,217 i 1989 7,925,400 6.7 10.1 1,881 1,203 6,402 24,044 8,344 32,610 I Chromium Copper Nickel fluoricin (nom) (nom) (nom) (nom) IAAI 6.Xt !!!il BE 6.11 MiD BH f.Y1 B10 585 8.Yt 510 1983 0.11 <0.01 0.39 0.06 <0.01 0.23 1.85 0.12 3.25 2.74 1.20 6.20 1984 0.16 0.05 0.47 0.07 0.01 0.13 2.70 0.95 4.27 5.09 2.46 8.80 I 1985 0.21 <0.10 0.30 0.10 0.b2 0.42 2.47 0.07 3.28 3.91 0.02 9.09 .1986 0.19 <0.00 0.50 0.07 <0.00 0.10 2.23 0.05 3.19 3.26 0.30 5.19 1987 0.09 0.05 0.53 0.13 0.01- 0.52 1.07 <0.05 1.54 4.53 3.29 7.25 1988 0.11 <0.01 0.80 0.15 0.06 0.29 0.59 0.19.0.81 5.07 3.28 6.31 1989 0.13 <0.01 1.20 0.15 <0.01 0.31 0.50 <0.01 1.22 5.66 3.03 10.11 h l to GE.Wilmi gton letter to Ms. Merri Horn dated 06/21/90. Page 39 ef $1 r f-TABLE 5-43 t. F ENVIRONMENTAL MONITORING SITE-DAM p .nH Ranae Amont a Witrate Fluoride J units) (non) t men) t nm) ItE E1D !!A5 AXt !!10 Uh &%t 210 tlas Art E10 5aa 1983 6.53 8.42 2.53 0.36 8.02 16.67 2.50 79.50 1.34 0.36 3.60 1984 5.52 7.95 3.63. 0.37 14.30 16.51 2.01 97.39 1.53 0.46 4.70 1985 6.42 7.89 3.93 <0.24 12.54 16.29 0.64 67.15-1.46 0.21 6.52 1986 6.36 8.84 3.49 <0.10 34.95 17.75 0.00 57.31 1.44 0.27 4.82 1987 6.17 8.28 2.47 0.22 9.03 24.23 2.41 120.99 1.89 0.27 4.61 1988 6.47 8.00 5.24 0.82 13.58 20.71 5.37 72.18 3.42 0.42 17.30 19891 6.26 8.85 5.52 0.85 19.34 30.44 <6.00 247.75 2.48 0.42 6.21 Chromita Conner Wleket (nom) (nam) (nom > ltE Art !!10 t!A5 &%1 !!10 BRA Art E1D BA5 1983 0.02,<0.01 <0.10 0.02 <0.01 <0.10 0.02 <0.01 0.11 1984 0.03 <0.01 0.11 0.03 <0.01 0.11 0.02 <0.01 0.08 1985 0.L/4 J <0.01 <G.10 0.04 <0.01 <0.10 0.02 <0.01 <0.10 1986 -0.03 <0.00 ' O.11 0.03 <0.01 <0.10 0.02 <0.01 0.10 1987-0.05 <0.01 <0.10 0.04 <0.01 0.11 0.03 <0.01 0.05 1988 0.01 <0.01' O.07 0.03 <0.01 0.20 0.02 <0.01 0.11 1989 0.02 0.01 0.05 0.02-0.01 0.14 0.02 <0.01 0.14 IDoes not include a pH reading of 5.436 which was recorded on May 18, 1989 due to mechanical f ailure of pH adjustment equipment at the final process Lagoons on May 17th. k 1

Attxitment 2 Ip GE Wilmington letter to his. hierri llorn dated 06/21/90. Page 40 of $1 TABLE 5-44 ENVIRONMENTAL MONITORIRQ NORTHEAST CAPE FEAR RIVER - UPSTREAM i DH RANGE AMMONIA WITRATE FLOORIDE TEMPERATURE _(untts1 (com) (tra) (com) (D ) C ItE !!11 BAE LYi Elk ME AY1 Elk B&E AY1 FO TEE AXE Ett B61 1983 5.66 7.53 1.64 0.07 7.10 2.02 0.19 11.95 0.44 <0.10 3.50 24 9 35 1984 5.48 7.09 1.34 0.03 3.26 1.38 0.19 3.30 0.23 0.01 3.13 23 6 33 1985 4.41 7.55 1.12 0.20 2.46 1.81 0.26 15.17 0.16 0.03 0.78 24 7 32 1986 5.33 7.66 1.01 0.21 2.99 1.91 0.89 5.40 0.16 0.01 1.18 25 8 35 1987 5.14 7.48 1.02 0.20 2.32 2.31 0.71 5.11 0.11 0.05 0.19 24 8 32 1988 5.54 7.38 1.45 0.27 3.00 1.84 0.95 4.47 0.15 0.05 0.37 23 6 36 1989 5.51 8.08 1,58 0.76 2.74 2.57 <0.88 <6.00 0.11 0.06 0.21 23 0 34 i l BIOCHEMICAL D18$0LVED OrYGEN OWYGEN DEMANO. _ FECAL COLIFORM (com) (mm/t1 (mf/100mti 11E AY1 E1H tLAX AX1 El!! El LYi ELE BiE 1983 5.33 2.00 10.30 1,41 <1.00 2.20 60 <10 $10 1984 4.99 1.40 11.30 1.88 1.00 4.80 57 0 400 1985 5.71 2.40 10.00 1.98 <1.00 3.00 15 0 50 \\ 1986 7.30 3.80 11.80 2.10 <1.00 5.00 31 0 180 1987 6.01 1.40 11.40 2.33 <1.00 13.00 56 0 350 1988 5.14 2.30 11.00 1.'7 <1.00 2.00 56 0 350 1989 5.08 1.80 10.30 1.50 1.00 3.00 30 0 50 i

mtachment 2 to GE.il'ilmington letter to his. hierri llorn dated 06/21/90. Page 41 of.51 TABLE 5-45 ENVIRONMENTAL MONITORING NORTHEAST. CAPE FEAR RIVER - GE-WILMINGTON DOQE DH RANGE __ WITRITE WITRATE FLUORIDE CHt0 RIDE (units) <oom) (om) (om) (com) IEAE G E M M E f.Y1 M E LY.L M E ay.t M E 1983 5.4 7.7 0.09 <0.01 0.95 1.65 0.12 6.30 0.46 <0.10 4.25 1773 1 8400 1984 5.8 7.1 0.02 <0.01 0.08 .1.08 0.28 2.78 0.22 0.03 2.50 377 9 2300 1985 6.2 7.6 0.03 <0.01 <0.60 1.67 0.00 3.17' O.15 0.03 1.79-1396 7'9825 1986 6.0 8.2 0.02 <0.01 0.07 2.04 0.42 9.79 0.18 0N 0.99 1181 22' 4864 1987 5.2 7.3 0.02 <0.01 0.13 1.98 <0.60 3.33 0.14 0.06 0.38 740 9 !852 1988 6.0 7.4 0.02 <0.01 0.06 2.04 0.85 4.54 0.16 0.05 0.31 397 19 2481 1989 6.0 7.6 0.02 <0.01 0.06 2.16 0.93 5.75 0.15 0.06 1.82 194 13 1458 SULFATEl 52*PER2 NicKEt2 cuponitm2 - (om) .-.icom) (om) < om) ll"E EG E M M E LY.1 M E 6Yi M E ~1983 310.0 2.0 1225.0 1984 69.3 3.0 270.0 1985 146.5 7.0 455.0 1986 150.5 3.0 600.0 1987 1988 1989 <0.010 <0.010 <0.010 0.011 <0.010 0.012 <0.010 <0.010 <0.010 I ulfato not in monitoring program after 1986. S 2 ot required when Final Process Lagoon effluent <.5 ppm. N t e. o r '( [\\I .(

- to GE Wilmington letter to his, hierri llorn dated Ot;/21/90. Page 43 of 31 TABLE 5-46 ENVIRONMENTAL MONITORING NORTHEAST CAPE FEAR RIVER - DOWNSTREAM pH RANGE AMMONIA N1TRATE FLUORibE TEMPERATURE JunitS) (com) (tem) '._ (com) (OC1 -l HE !!L. E M tu.tl E M td!! IE M !!!H !!AJ M tu.!! tM y 1983 6.15 8.12 1.55 0.17 5.83 2.01 0.4b 4.76 0.54 <0.10 3.20 24 8 35 1984 5.76. 7.55 1.24 <0.01 3.09 1.50 0.08 3.00 0.26:0.01 3.12 23 2 32 1985 6.09 7.44 1.15 0.00 2.33 1.93 0.00 15.17 0.26 0.04 0.75 24 7 32 ~i 1986 5.78 7.43 1.21 0.28 4.84 1.93 1.05 5.30 0.25 0.05 1.10 25 9 33 i 1987 5.08 7.48 1.05 0.24 2.70 2.04 <0.60 3.55 0.18 0.06 0.58 25 9 32 l 1988 - 5.84 8.18 1,29 0.30 2.48 2.09 1.07 3.94 0.23 0.06 0.51 23 6 32 19891 5.68 7.51 1.49 0.76 2.10 2.23 1.41 <6.00 0.17 0.07 0.33 23 10 32 i BIOCHEMICAL DISSOLVED OXYGEN .0XYGEN DEMAND FECAL COL 1 FORM -l (com) (mo/t) (mf/100mt) 1.tE M. !!.Ltl IE M 19.!! tM M !!13 tiili i. 1983 5.99 2.80 12.20 1.66 <1.00 2.20 66 <10 230 1984 5.13 2.20 10.40 2.12 <1.00 3.80 91 <10 300 1985 5.79 2.00 12.20 2.30 1.00 4.00 102 0 620 19862 7.46 4.20 12.40 2.64 <1.00 5.00 124 10 730 i 1987 6.11 2.90 11.80 2.25 1.00 8.00 133 0 360 1988 5.66 2.40 10.90 1.17 <1.00 2.00 68 20 190 19891 6.34 3.60 9.80 2.00 <1.00 3.00 58 0 110 I Monitoring discentinued af ter June 1989 due to change in NP0ES permit. New permit specifies downstream samples to be taken at GE Wilmington dock. 2A dissolved oxygen value of 90 ppm logged in 1986 was considered erroneoca and was discarded. If that value is kept, the average dissolved oxygen for 1986 is 8.44 ppm.

1 Attachment a to GE.il'ilmington letter to his. hierri Horn dated 06/21/90. Page 43 of $1 t TABLE 5-48 ENVIRONMENTAL MONITORING NITRATE SHIPMENTS TO FEDERAL PAPER BOARD COMPANY. INC; 6 (ppm) SAMPLE PolNT IN FEDERAL PAPER BOARD COMPANY. INC. TREATMENT SYSTEM New Bay North Basin M ARmonia Nitrate Amonia Nitrate an Elo En an E.la Eu en FJ.D Eu en 510 En 1983 1.85 0.47 6.40 0.22 <0.10 1.00 3.75 1.03 8.99 0.22 <0.10 1.00 f 1984 1.80 0.34 6.29 1.29 <0.01 - 5.84 4.68 0.66 31.00 1.51 <0.01 5.84 '? 1985 1.30 <0.24 3.38 1,41 <0.12 9.30 3.50 <0.46 6.55 1.44 0.00 13.43 j 1986 1.52 0.36 3.97 2.24 <0.12 12.83 4.41 0.65 7.01 1.95 <0.12 11.61 L 1987 1.43 0.18 3.54 2.11 <1.20 6.40 4.62 0.90 7.53 1.90 <1.20 2.71 1908 1.86 0.41 5.34 2.30 <1.20 4.60 5.56 1.06 9.89 2.14 0.00 3.39 1989 1.92 0.62 13.43 2.32 <0.60 8.36 5.21 2.67 13.15 2.20 <0.60 7.97 4 f 'I

~ ~ ? gl +,. ' Attachkent 2llo GE.Wilmington lettcr to bfs; kierri Horn' dated 06/21/90, Page 44 of 31: '? ' ;1 [;;p: ([C " TABLE.5-49 . Environmental Monitorino l J. .Lfi Fluoride' Concentration in Grass-(j g .(ppm F) u. Sample Date Ambient Air Samp11nc-Station. ? h i n 1 Southwest 2

Northeast *-

i ci ~ '11/14/841 < 10 < 10 5/07/85 < 10 < 10 4 9, < 10 < 10 j U-11/10/86. 5/04/87 .< 10 <'10 r jV 10/13/87 10 <.10 1 w ,-5/21/88 < 10 <--10 ]

10/13/88

< 10. < 10. 4 7 5/24/89 < 10 < 10 Y '10/05/89 fi <--10 ~< 10 j 4 3 i 1 Reference Figure 2-18 for. location ' of-ambient air sampling-1 . station.. g. .a tr .i c Y s fi ' 7 Samples Requested by N.C. Radiation Protection Section-5 d 1 i P

i 1;

Sample-Date. 2 Km South oi site 2'Km Northeast of Site-4 4 6/08/88 < 10 '12 1 I- ' r i.' i 31 ' ,4 x '{ -.' e f { C

p . Nttachmhnt 3 to GEdl'ilmington letter to Ms. Merri llorn dated 06/2N/90.; PageOSof$1 LTABLE 5-b0c i-COMPOSITION OF PRINCIPAL AQUIFER L(PPM)2 Preoperational. Parameter. Data (1968) 1985 1987 1988 1989 - Calcium _ (Ca) - 100 ~6 4 - 62.5 83' 18 0 ' Iron'(Fe)' O.09 ~2.16 : l'.45 1.87 1.70 Magnesium (Mg)' 7 4.1 3.9 2.4 119; i Sodium -.(Na) 57 16. 13.6 =4598 11.2-l Manganese (Mn). 0.01-0.711 0.04 0.05 0.87 L Uranium' (U). <0.02 <0.02 <0.021 <0.02 Bicarbonate -(HCO ) 132 207-139 154 .150: 3 Carbonate (CO ) L O. O <1.0 <1.0 <1.0-3 Chloride -(Cl)' 40 16-44 20 22 Sulfate (SO.) 1 8: Os 31 34-Nitrate (NO ) 0_ 0.61 0.20 0.36 0.'4' 3 Ammonia ((NH ), 0.17 0.35 0.42 _ - 0.1-q- 3 cPhosphorus'(P)- 0.17 0.27 0.21< 0.11: Total Hardness 107 178 172 220 190 l . Alkalinity 8 123 184~ 170 122 176' i

pH- (units):

7.3 16.7 6 '. 9 - 7.5 7.0 -Total Solids 200-259' ?5 336-1376 1 ~ 234' 244 327 -364 Total Dissolved Solids Total Susp'endedLSolids 7 10-10 < 5. 0: 3 2 2 < 1. 0 =

BOD, COD 18 17.

18-5.9 Free CO,_ 13-67 13.4 -136-

8. 8:

1 ~ Silica;(SiO,) 17 16.1 .15 15.2 .15L j Conductivity pmhos/cm 381' 398 6298 440~ Organic 1 Nitrogen 0.29 0.65 0.30 < 0' 1 q '1Except'where noted aMethyl' Orange 8Resample on 2/23/89 -Sodium.= 9.9 ppm;. Conductivity = 320 pmhos/cm 3

I - Altaihntent N to GE-Wilmington letter to his. bierri Horn dated 06/21/90. Page 46 of Si a-i TABLE 5-51 ? ENVIRONMENTAL MONITORING PRINCIPAL AOUIFER - CHEMICAL CONCENTRATIONS IN INDIVIDUAL WELLS: (PPHI) 111:~ WetI# 9 Wet 1. # 11 Weti # 14 Wett w se Nitrate Fluoride N-trate Nitrate Nitrate Art - !!i0 E15 Art !!!D Eta &XS EM 215 Alt !!i0 111 5 Alt !!1D Et5 1978 <0.18 <0.10 0.25 =- 1979 <0.16 <0.10 0.24 1980 <0.16 <0.10 0.32 I 1981' 0.35 0.10 0.96 0.28 0.15 0.40 1982 0.20 0.13 0.26 0.18 0.16 0.21 0.17 0.13 0.26 0.22 0.13 0.42 0.42 0.41 0.43 1983 0.21 <0.13 0.40 0.24 <0.10 0.46 0.62 <0.13 <5.00 0.21 <0.13 0.40 2.17 0.18 7.25 i 19841 0.51 <0.10 1.66 0.14 <0.01 0.30 0.20 0.03 0.42 0.16 0.05 0.30 2.87 <0.10 5.92 1985 0.15 <0.12 0.29 0.19 0.09 0.50 0.15 0.10 0.26 0.16 0.11 0.29 2.35 0.13 <6.00 1986 0.18 <0.12 0.46 0.16 0.06 0.30 0.19 <0.12 0.42 0.27 0.13 0.51 0.94 0.12 1.83 1957 0.50 <0.12 2.82 0.21 0.11 0.35 0.29 <0.12 <1.20 0.82 0.15 1.80 0.39 0.18 0.67 1988-0.29 <0.12 <1.20 0.22 0.14 0.33 0.20 <0.12 <0.60 3.43 <0.12 7.84 0.42 0.27 <0.60 1989. 0.36 <0.24 <0.60 0.21 0.12 0.26 0.47 <0.24 0.87 5.70 0.26 9.20 0.63 <0.60 0.71 INitrate concentrations for the samples collected on April 5, 1984 are removed from the suninary table and reported here for information purposes. The cause of these higher values is not known but sample contamination is suspected. Well No. Nitrate Dom 9 7.00 11 12.00 14 9.00 i T h i ? I

ittachment a to GEMilmington' letter to Ms. Merri Horn dated 06/21/90. Page 47 of $1 . TABLE 5-52 ENVIRONMENTAL MONITORING W.ATER-TABLE AOUIFER - WASTE TREATMENT FACILITY DH RANGE FLUORIDE NITRATE AMMONIA WELL-(units) (ppm) (ppm) .(ppm) DESIGNAfl0N XL6R. S M M M M M M M M M. t WT.1 1983 6.96-7.90 1.30 0.69 2.18 24.32 0.13 51.00 1.11 0.22 4.57 1984 6.58 7.70 1.19 0.60 2.20 20.93 0.02 38.22 0.75 0.07 2.37 1985 5.91 7.40 0.75 0.35 1.48 27.34 9.23 92.68 1.11 0.12 2.64 1986. 5.19 9.26 30.43 0.12 67.59 294.55 3.30 1055.85 163.83 <0.10 345.11 1987 5.10 6.69 12.46 6.84 31.89 126.56 32.01 264.22 66.41 28.53 125.15 1988. '..v 4.31 14.39 0.20 22.16 68.57 0.67 358.62 9.76 0.97 ~ 22.44 1989 6.07 6.92 12.66 7.29 17.67 109.85 14.53 631.21 3.60 0.50 9.31 Wi 2 1983 4.99 7.50 0.27 -0.10 0.91 11.28 <0.20 40.00 2.13 0.36 6.44 1984 5.72 6.55 0.17 <0.01 0.43 9.32 0.35 37.07 1.00 0.19 2.40 1985 5.33 6.76 0.13 0.04 0.38 28.51 1.43 109.81 0.79 0.14 2.25 1986 4.88 6.59 0.35 0.01 1.02 33.58 3.35 79.28 1.93 <0.10 3.83 1987 4.63 6.47 0.21 0.09 0.31 20.70 1.89 53.48 2.75 0.94 9.53 1988 4.56-6.44 1.65 0.14 14.38 61.64 0.91 471.89 3.68 0.40 21.52 1989 5.19 6.29 0.36 0.12 1.21 $1.36.1.69 157.41 1.18 <0.49 2.37 i Wi 3. 1983 4.20 '7.50 0.16 <0.10 0.32 4.71 0.19 26.60 2.94 <0.06 7.73 1984 4.40, 6.79 0.11 <0.01 0.30 4.04. 0.43 10.00 3.78 0.07 9.70 1985 5.16 6.61 0.08 0.02 0.27 3.08 0.24 9.48 1.18 0.32 2.18 1986 4.53 6.23 0.15-0.01 0.66 4.53 <0.24 17.70 4.37 0.14 12.19 1987 4.97 6.08 0.10- 0.05 0.13 2.06 0.46 3.32 5.92 2.40 - 16.51 1988 4.94 6.22 0.12 0.06 0.22 7.28 0.62 34.61 5.69 1.01 13.72 1989 5.44 5.95 0.09 0.04 0.16 3.05 0.90 7.06 5.44 2.47 11.38 WT 4 1983 5.49 6.39 0.65 0.35 1.24 21.49 1.58 37.00 2.18 0.40 5.16 1984 6.05 6.05 0.10 0.10 0.10 1.69 1.69 1.69 41.00 41.00 41.00 1985 5.21

6. 74 0.07 0.02 0.24 5.14 0.65 16.20 13.17 2.44 21.19 1986 4.55 6.42 0.12 0.01 0.53 5.19 0.46 12.83 3.16 1.00 6.96 1987 4.31 5.83 0.08 0.05 0.10 3.79 1.44 8.66 4.09 0.67 7.44 1988 4.01 5.62 0.10 0.06 0.20 4.82 0.63 12.26 1.92 0.27 5.83 1989 5.24 5.79 0.09 0.05 0.20 3.99 0.92 10.60 2.67 0.54 9.39 WT 5 1983 3.90 6.57 0.15 <0.10 0.28 1.71 0.17 8.75 4.12 0.20 13.00 1984 4.06 6.19 0.11 <0.01 0.47 4.52 0.22 46.00 2.54 0.42 4.80 1985' 5.05 6.44 0.07 0.02 0.27 0.88 0.22 1.89 1.70 0.77 3.27 1986' 4.30 6.17 0.10 0.01 0.44 4.51.0.27 31.11 2.44 1.00 3.66 1987-4.77 5.84 0.07 0.04 0.12 0.69 <0.24 1.95 3.24 0.56 16.59 1988 4.83 6.02 0.09 0.04 0.19 1.76 0.13 9.20 2.66 1.02' 12.51 1989 5.69 6.19 0.08 0.05 0.18 1.19 <0.60 2.09 2.27 1.32 3.60

.l WT 6 1983 3.80 6.10 0.14 <0.10 0.31 4.22 0.50 15.92 6.75 1.33 10.21 1984 3.51 6.39 0.09 <0.01 0.24 1.75 0.70 3.10 11.06 6.57 16.85 1985 5.35 6.51 0.07 0.02 0.31 3.26 0.61 13.93 7.15 1.81 12.54 1986 4.89 6.64 0.11 0.01 0.51 1.30 0.12 6.74 6.83 2.35 10.32 1987 5.41 6.22 0.07 0.04 0.10 2.49 0.31 19.26 8.13 4.73 10.52 1988 5.21 6.24 0.09 0.04 0.18 1.15 0.32 3.13 8.53 3.00 13.32 1989-5.77 6.46 0.07 0.03 0.10 1.61 0.82 3.77 12,91 6.98 - 33.65 WT 7 1983 3.75 7.11 0.15 <0.10 0.34 10.06 0.24 36.20 2.62 0.65 6.13 1984 5.64 6.34 0.09 <0.01 0.20 7.87 0.70 34.76 2.29 0.20 5.70 1985 5.54 6.91 0.08 0.02 0.37 6.77 0.69 35.92 1.64 0.49-5.67 1986 5.06 7.06 1.76 0.01 19.90 5.77 <0.24 24.87 11.58 <0.10 120.99 1987 5.18 6.29 0.08 0.04 0.11 6.32 <0.12 35.29 2.22 0.74 7.27 1988 5.66 6.27 0.09 0.04 0.18 7.31 0.40 24.38 1.10 0.47 1.91 1989 5.84 6.49 0.10 0.05 0.28 8.74 <0.60 37.74 1.79 0.76 3.22 WT 9 1983 6.46 7.10 0.14 <0.10 0.30 10.87 <0.13 22.50 0.89 0.21 3.89 1984 6.29 7.19 0.27 0.03 1.52 3.97 0.51 17.80 0.60 0.19 1.53 1985 6.24 7.30 0.36 0.02 1.19 15.58 0.24 70.82 1.19 0.14 2.42 19861 1987 5.37 6.69 5.55 0.05 16.97 47.87 2.86 139.66 23.66 0.20 87.79 1988 5.70 6.54 13.82 0.05 24.64 312.47 0.67 838.21 11.92 0.87 22.13 1989 5.95 6.11 0.16 0.06 0.33 20.52 3.49 31.67 2.42 1.97 2.88 1Well dry all year.

4ttachinent 8 to GE Wilmington letter to his, hierri Horn dated 06/21/90.

Page 48 of $1 t TABLE 5-53 ENVIRONMENTAL-MONITORING WATER-TABLE AOUIFER - CALCIUM FLUORIDE SLUDGE STORAGE AREA IN NORTHWEST PART OF GE-WILMINGTON SITE ~' FLUORIDE WITRATE (com) (tem) WEtt DESIGNAff0N g g 19,3 g g g g CaF 1 1983 0.24 0.15-0.44' 1984 0.11 0.03 0.22 0.28 0.28 0.28 1985 0.15 0.03 0.34 1986 0.04 0.03 0.08 1987-0.10 0.04 0.18 1988 0.09 0.05 0.16 1989 0.06 0.03 0.15 CaF 2 ' 1983 0.19 <0.10 0.26 1984 <0.10 <0.10 <0.10 0.19 0.14 0.25 1985 0.14 0.04. 0.30 1986 0.04 0.03 0.05 1987 0.09 0.03 0.17 ^ 1988 0.09 0.06 0.14 1989 0.05 0.03 0.10 1. CaF 3 1983 0.18 <0.10 0.26 1984 0.10 0.03 0.16 0.24 0.24 0.24 1985 0.13 0.03 0.27 1986 0.04 0.03 0.06 1987 0.09 0.03 0.16 1988 0.08 0.06 0.12 1989 0.04 0.03 0.08 Caf*4 '1983 0.17 <0.10 0.26 1984 0.10 0.08 0.13-0.33 0.33- 0.33 1985 0.11 0.03 0.22 1986 0.04 0.02 -0.08 1987 0.09- 0.03 0.17 1988 0.09 0.06 0.12 1989 0.06 0.03 0.08'

)

i Attachment 3 to GE Wilmin:lon letter to Ms. Merri Horn dated 06/21/90 Page 6 of$1 a ~, . I i TABLE 5-54 l ENVIRONMENTAL MONITORING WATER-TABLE AOUIFER - FORMER ZIRCONIUM SLUDGE STORAGE AREA l i I DH RANGE WITRATE AMMON!A 2IRCONIUM i WELL (units) (ppm) (ppm) (ppa)- DESIGNATICE J,[$f M g g 3 3 M M g g.g g l WELL 2B 1983 5.97 7.29 215.44 0.13 1050.00 3.15 0.20 14.60 0.01 0.01 0.01 i 1984 4.58 7.00 706.74 0.07 8400.00 1.53 0.24 3.89 <0.01'<0.01 <0.01 j 1985 3.36 7.18 33.73 0.17 164.50 4.42 0.72 18.12 <0.06 <0.01 <0.10 ~ ! 1986 4.49 6.48 3.32 0.16' 10.01 2.54 <0.10 7.31 <0.05 <0.05 <0.05~ i 1987 4.83 6.84 23.61 <0.12 67.46 5.28 0.67 9.65 . 0.05 <0.05 <0.05 i 1988 5.67 6.64 21.32 <0.12 91.05 3.07 0.84 5.43 <0.01 <0.01 <0.01' l 1989 6.01 6.63 3.18 <0.24 43.58 4.98 0.85 8.48 0.09 <0.01 0.25 WELL 2C 1983 5.38 7.75 3658.15 0.20 16694.00 63.12 0.59 188.40 0.03 0.01 <0.05 1984 4.27 7.42 816.44 0.19 8500.00 12.62 0.66 49.00 <0.01 <0.01 <0.01 1985 5.69 7.28 686.46 0.32 6967.00 21.18 4.44 44.42 <0.06 <0.01 <0.10 - r 1986 5.72 7.08 208.51 0.42 897.57 6.04 2.87 9.47 <0.05 <0.05 <0.05. i 4 1987 5.79 6.82 7.64 <0.12 81.83 5.46 1.71 10.40 <0.05 <0.05 <0.05 1988 5.81 6.68 27.02 0.00 138.85 3.77 2.42 6.55 <0.01 <0.01 <0.01 1989 5.70 6.33 8.47 40.60 44.37 5.43 0.63 19.25 0.07 0.04 -0.12 - ( WELL ZD 1983 5.56 11.48 210.90 0.20 561.00-6.25 0.53 16.29 0.01~ 0.01 0.01 1984 5.89 7.58 8.76 0.10 99.00 4.34 2.60 6.56 <0.01 <0.01 <0.01 1985 6.50. 7.33 10.78 <0.12 86.51 12.43 ~2.16 21.25 <0.06 <0.01 <0.10 l 1986 6.03 ' 6.95 2.22 <0.12 7.96 15.83 10.14 25.67 <0.05 <0.05 <0.05 1987 6.36 6.75 1.19 0.19 9.60 6.94 3.08 11.22 <0.05 <0.05 <0.05 i 1988 5.82 6.78 7.72 0.00 48.11 4.29 2.76 7.22 <0.01 <0.01 <0.01 1989 6.05 6.59 0.87 <0.24 2.14 6.16 3.47 8.12 0.01 0.01-0.01 WELL ZE' 1983 6.26 7.74 268.58 0.21 1080.00 13.80 0.78 57.00 0.01 0.01 '0.01 1984 5.40 7.46 61.99 0.24 250.00 8.60 0.93 47.40 <0.01 <0.01 <0.01 1985 4.13 7.25 162.79 0.39 511.88 6.75 1.31 28.35 <0.06 <0.01 <0.10 1986 5.88 7.10 27.24 <0.12 298.90 4.16 <0.10 15.91 <0.05 <0.05 <0.05 -1987 5.82 6.69 0.54 0.24 1.44 3.55 0.46 11.67- <0.05 <0.05 <0.05 1988 5.93 6.70 12.18 0.00 51.00 4.06 0.88 9.16 <0.01 <0.01- <0.01 1989 6.03 6.55 2.24 0.24 20.95 5.77 1.50 12.38 .0.01.0.01 0.02 l WELL ZF 1983 5.38 7.00 115.26 0.19 1000.00 5.02 0.41 23.71 0.01 0.01 0.01 1984 5.10 7.52 39.41 ' O.31 189.77. 5.37 1.10 22.40 <0.01 <0.01 <0.01 1985 3.93 6.98 54.92 <0.24 232.43 10.27 1.14 22.50 <0.01 <0.01 <0.01 1986 6.54 7.15 87.03 1.63 323.28 13.84' 6.61 21.25 <0.05 <0.05 <0.05 19871 19881 1989 5.95 6.53 7.47 <0.24 26.73 6.74 4.42 9.40 0.01 0.01 0.01 WELL ZG 1983 6.22 7.35 4.29 0.13 22.50 1.41 0.25 5.16 0.01 0.01-0.01 1984 5.73 7.63 24.81 0.00 258.00 5.49 0.97 46.20 <0.01 <0.01 <0.01 1985 5.06 6.98 1.03 <0.12 <6.00 2.28 1.10 4.81 <0.01 <0.01 <0.01 1986 4.29 6.68 1,49 <0.12 7.96 2.61 <0.10 5.26 <0.05 <0.05 <0.05 4 1987 6.03 6.61 0.65 <0.24 2.50 4.93 2.01 10.85 <0.05 <0.05 <0.05 1988 5.42 6.55 2.92 0.00 27.57 3.04 0.79 5.83 <0.01 <0.01 <0.01 1989 5.96 6.59 4.03 <0.24 43.50 4.48 1.15 8.14 0.18 0.01 0.35 1WeLL dry all year.

se Attachment a to GE.Wilmington letter to Ms. Merri Horn dated 06/ 21/ 90. Page 50 of $1 i TABLE 5. ENVIRONMENTAL MONITORING-WATER-TABLE AOUIFER - FINAL PROCESS LAGOON AREA 1 4 _DH RANCE FLUORIDE NITRATE L AMMONIA WELL. (units) (pgn) . (ppm) (ppm) DESIGNAff0N ILAg M M_ M $ M :$ M M 'E PL 1 1983-5.91.6.27 0.17 <0.10 0.23 3.84 <0.13 7.55 2.71 0.27 5.16 i 1984 5.94-7.67 0.20 0.15 0.27 0.80 <0.08 1.54 0.41 0.12 .0.75 l 1985 5.72 6.83 0.29 0.18 0.49 2.23- 0.44 4.20 1.11 0.43 1.68 1986 6.12 6.40 0.29 0.16. 0.55 0.40 0.27 0.61 2.21 0.32J 4.54 t 1987 5.85 6.16 0.33 0.10 0.53 ~22.31 <0.24 64.64 2.05 0.58 4.28 1988 5.91 6.98 0.25 0.14 0.47 1.53 0.13 4.91 2.26 0.75 4.65 L 1989 6.08 6.35 0.59 0.26 1.47 0.68 0.54 0.78 2.52 1.10 ~ 4.49 pt.3 19631 1984 6.53 7.53 0.12=0.12 0.12 1.16 0.98 1.34 0.81 0.17 1.46 1965 5.67 7.31 0.19 0.08 0.36 10.52 0.49-26.03 1.41 0.34 2.71 1986 6.14 6.80 0.26 0.10 0.55 . 0.36 0.24 0.60 1.92 0.26 3.37. 1 1987 6.04 '6.04 0.09 0.09 0.09 19.01 19.01 19.01 1.27 1.27 1.27. 1988 .6.34 7.73 0.20. 0.08 0.32 1.44 0.20 4.18 1.61 0.76 2.66 -1989 6.04 6.80 1.03 0.09 3.61 6.57 <0.60 24.25 2.67.1.32 3.93 PL 5 1983 6.82 7.17 0.17 <0.10 0.23 4.66 2.07 7.25 3,01 1.16 4.86 1984 6.82 7.44 0.17 0.09 0.32 2.84 2.25 3.40 0.27 0.06 0.56 1985 6.44 7.12 0.12. 0.05 0.22 1.10 0.57 1.44 1.59 0.% 2.07 1986 6.48 7.14-0.23 0.07 0.65 3.65 0.27 11.10 1.74 0.32 3.97 1987 6.82 7.06 0.10 0.06 0.13 29.29 <0.12 74.03 2.33 1.33 3.76 1988 6.39 7.n3 0.13 0.08 0.22 1.21 0.17 3.27' 1.80 1.27 2.69 1989 6.59 6.89 1.07' O.10 3.87 0.73 0.68 0.77-2.31 1.32-3.73 PL 8 1983 6.97 7.14 3.30 2.50 4.10 4.03 0.50 7.55 3.25 0.68 5.83 1984 7.25 7.91 1.74 0.46 3.53 3.79 2.60 6.10 1.03 0.20 2.54 1985 6.94 7.94 1.36 0.19 3.40 11.74 0.34 38.71 1.71 0.87-2.83 l 1986 '6.37 - 7.69 0.96 0.09~ 2.44 0.84 0.37 1.16 1.99 1.39 3.07 1987-6.38 7.47 1.01 0.09 2.37-21.04 2.02 58.96 1.58 0.85 2.87 1988 6.29 7.03 0.79 0.59 0.91 1.58 0.28 <2.40 3.12 0.68 7.54 1989 6.58 7.02 1.27 0.15 3.04 -0.84 <0.60 1.47 3.44 <0.49 6.00-PL.11 1983 6.86 6.93 0.72 0.50 0.94 -3.84 <0.13 7.55 3.78 2.09 5.47 1984 6.76 7.06' O.69 0.24 1.25 ?.85 0.85 7.00-0.98 0.20 2.18. 1985 6.64 7.07 - 0.52 0.18 0.98= b 41 1.44 5.96 '2.00 '1.34 3.06 1986 6.25 6.71 0.55 0.09 1.07 '. 86 1.34 2.44 2.70 0.95 4.19 1987 6.43 6.68 0.76 0.58 1.03 2.16 0.13 -3.52 5.83 1.05 14.50 1988 6.26 7.08 0.84 0.57 0.% 1.55 0.12 3.12 3.43 0.59 8.60 1989-6.46 7.02 0.82 0.57 1.03. 0.95 <0.60 1.44 2.56 <0.49 5.64 1Well dry all year, i i

] ,, to GE 1('ilmington letter to his. hierri Horn dated 06/21/90. Page $1 of 31' N TABLE 5-56 j ENVIRONMENTAL MONITORING . WATER-TABLE AOUIFER - SANITARY WASTE TREATMENT FACILITY-WELL DESlCNATION mg FECAL CollFORM (mf/100ml) 'i eX1 !!1!l Bel $1 1983 15 <10 50 l 1984 18 0 50 1 1985 55-0 120 1986-15 0 30 j 1987 0 0 0 R 1988 0 6 0 1989 0 0 h $2 1983 13 <10 20 b 1984' 63 0 180 1985 0 0 0 1986 5 0 10 1987 0 0 0 1988 0 0 0 1989 0 0 0 $3 1983 10 <10 10 1984 244 0 1104 1985 0 0 0 h 1986 0 0 0 1987 0 0 0 1 1988 0 0 0 19891 132 L 340 S4 -1983 12 <10 20 1984 5 0 10 1985 0 0 0 l i - 1986 0 0 0 if 1987 0 0 0 1988 2 0 4 1989 0 0 .0 .I 1Resempted af ter 53 well showed 340 value in August, *,989 Resample in Septeaber,1989 showed 0 mf/100ml and - January, 1990 result was O mf/100ml. j 1 s ) 4

h.

t' .( sS 4 s 1 to GE-Wilniington letter to his. Aterri Horn dated 06/21/90. Page 1 of 2 With regard to enclosed table 5-23 updated with the 1989 values and Section 5.3.1.2.2.2.2.1 of the Environmental Report, the shallow monitoring well, WT-1, at the Water Treatment area shows a slight increase in trace amounts of uranium. The uranium is attributed to nitrate waste process piping leaks in 1989, which caused an external contamination source for WT-1. The process piping leaks were corrected by replacement with a new stainless steel transfer pipe in early 1990. Added sealing of the WT-1 surface area has been done and the well cap left in place to minimize surface contamination of the well. Therefore, corrective action has been taken to reduce chances of well contamination. WT-1 remains as an early warning well for potential lagoon leakage in the Waste Treatment. area. With respect to enclosed table 5-32 with the 1989 data and Section 5.3.1.3.1 of the Environmental Report, uranium values for soil in i locations 1A, 20, and 21 increased in 1989 as compared with 1988. In review of the specific quarterly data for 1989 (in response to item #2 of the NRC request), there is no upward trend from 10 to 40, but the values are slightly higher on a relative basis than 1988. Location'1A, the storm water channel sediment collection point from the controlled-access Fuel Manufacturing Operation area, is the subject of an ongoing 1990 study to determine the source (s) of the uranium. Although the values are up slightly (a factor of 2), no significant environment impact has occurred. Further assessment is planned. With regard to locations 20 and 21, there is a slight increase in 1989. The waste box storage pads are used on a continuing basis and routine checks for contamination from waste boxes will be monitored. Since the waste box inventory has been reduced substantially from the earlier levels, and the uranium levels were reduced in 1987, the , uranium levels are anticipated to remain in 1988-1989 range. No further-actions are planned unless monitoring results show return to 1986-87. levels. With respect to the updated table 5-33 and Section 5.3.1.3.2 of the Environmental Report, the uranium values for location No. 6 increased above 1988 values. A review of the last 2 samples for sample location No. 6 for the second half of 1989 and the first half of 1990 i shows respectively 0.98 ppm and 3.01. Therefore, there is not a .significant upward trend. This is within the expected concentration variation in rendom sediment sampling. With respect to the enclosed table 5-36 with the added 1989 values s and Section 5.3.2.2.1.1 of the Environmental Report, the nitrate I' values increased over the 1988 levels. The nitrate increases, well l within the new NPDES effluent limits, may be attributable to FCO tubing etching and rinsing increases. Routine sampling and monthly reporting for the NPDES permit will continue and trends will be monitored. Surveillance of the process lagoons has been enhanced by reassignment of sampling routines to one group and more frequent observation checks.

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Attachment 3 to GE Wilmington letter to Afs hierri Horn dated 06/21/90.

Page 2 of 2 With respect to the enclosed table 5-51 with the added 1989 data and with Section 5.3.2.2.2.1, Supply Well #14 nitrate values increased Lin-1989 as compare'd with 1988. A hydrogeological study was initiated in 1989_to assess this condition. The study continues with a program to monitor and understand this groundwater anomaly, Site hydrogeological characterization for both the water table and i principal aquifers is underway. A contingency plan was developed to respond in case of a continuing upward trend. The 1989 average i nitrate concentration of 5.7 ppm is less than 15% of the allowable concentration in the EPA Primary Drinking Water Standard. The l actual concentration in the site supply water is much lower since 8 or more supply: wells with background nitrate. levels combine to i provide the site water supply. Increased sampling frequency for l Supply Well #14 to weekly will be continued as conditions dictate. I With respect to the_ enclosed table 5-52 with the 1989 data and the. i Section 5.3.2.2.2.2.1 of the Environmental Report, WT-1 Well increased in nitrate levels in 1989 due to external contamination from a nitrate waste piping leak. Corrective action has been taken as described in the first paragraph of the previous page.}}