REV03671

• Permit No: C1980003
• IBM Index Class Name: Revision
• Doc Name: HG COAL CO GROUND WATER MONITORING WELL HG-1
• Type & Sequence: SL3
• Media Type: D
• Archive: No

HG COAL COMPANY
GROUND WATER MONITORING WELL HG-7
SAMPLE
DATE CU CN
tot rec free
mg/I mg/I F
diss
mg/I FE
diss
mg/I FE
tot
mg/I FE
tot rec
mg/I H2S

mg/I HARD
as CaC03
mg/I HG
tot
mg/I HG
tot rec
mg/I K
diss
mg/I MG
diss
mg/I MN
diss
mg/I MN
tot
mg/I MN
tot rec
mg/I MO
tot
mg/I NA
diss
mg/I NI
diss
mg/I NH3

mg/I NH3
un-ionized N02
diss
mg/I N03
diss
mg/I
11/05/87 0.2 589 68 290(s) 0.28 0.01 1.41
03/28/88 0.2 0.21 630 -0.0002 70 0.02 -0.05 41 0.17 0.29 0.21
06/28/88 0.3 1.14 -0.0001 66 0.02 -0.05 39 1.26 0.03 1.11
08/11/88 0.2 0.76 -0.0001 77 0.01 -0.05 51 0.11 0.05 1.72
10/10/88 0.3 4.95 -0.0001 65 0.08 -0.05 26 0.06 -0.01 1.64
10/25/88 0.3 2.12 -0.0001 73 0.03 -0.05 52 0.03 0.09 1.12
08/07/89 0.3 1.63 -0.0001 74 0.03 -0.05 42 0.13 0.07 1.18
t OIOSI89 802 151 25 0.05 -0.Ot 1.17
06/15/90 0.3 0.78 639 -0.0001 73 0.02 -0.05 43 0.21 -0.01 1.2
08/13/90 0.6 2.2 -0.0001 64 0.05 -0.05 34 -0.05 -0.01 1.2
09/20/90 0.3 0.35 668 -0.0001 66 0.01 -0.05 45 0.27 0.03 0.84
06/03/91 0.3 -0.02 SB4 -0.0001 60 -0.01 -0.05 29 -0.02 0.01 0.92
10/11/91 0.3 -0.02 552 -0.0001 59 -0.01 -0.05 31 0.11 -0.01 0.75
05/12/92 0.3 -0.02 506 -0.0001 55 -0.01 -0.05 27 0.08 -0.01 0.87
09/03/92 0.2 3.06 635 -0.0001 56 0.11 -0.05 34 1.5 -0.01 0.04
06/10/93 0.3 -0.02 587 -0.0001 59 -0.01 -0.01 30 0.11 -0.01 0.97
08/30/93 0.3 0.03 -0.0002 55 -0.01 -0 01 28 -0.05 -0.01 1.13
05/05/94 0.3 -0.04 395 -0.0002 42 -0.01 -0.01 26 0.2 -0.01 1.53
09/06/94 0.4 0.11 587 62 -0.01 -0.01 39 -0.05 -0.01 1.77
06/27/95 0.4 0.05 492 53.4 -0.005 -0.01 29.2 0.06 -0.01 1.91
10/11/95 0.4 0.01 551 59.3 -0.005 -0.01 32.4 0.05 -0.01 1.6
06/20/96 -0.1 0.4 0.06 0.02 -0.02 576 -0.0002 1.2 61.1 -0.005 -0.005 34 -0.01 -0.05 -0.05 -0.01 1.55
11/08/96 -0.1 0.4 0.01 11 0.23 501 0.0005 1.6 53.2 0.006 0.321 46.7 -0.01 0.07 0.02 0.93
06/19/97 0.4 0.02 34.2 0.21 524 1.4 55.8 -0.005 0.63 36.1 -0.01 0.08 -0.01 1.95
10/15/97 0.3 -0.05 19 0.12 564 2 55 -0.03 0.47 42 -0.05 0.11 -0.01 1.12
06/30/98 0.3 0.01 4.38 0.25 572 1.6 62.6 -0.005 0.217 37.9 -0.01 0.49 -0.01 1.59
NUMBER 0 2 25 5 22 2 5 19 16 2 5 26 5 22 2 19 26 5 26 1 26 26
MINIMUM -0.1 0.2 -0.05 -0.04 0.02 -0.02 395 -0.0002 -00002 1.2 42 -0.03 -0.01 -0.005 -0.05 0 -0.05 -0.05 -0.05 -0.01 0.04
MAXIMUM -0.1 0.6 0.06 34.2 11 0.25 802 -0.0001 0.0005 2 151 0.008 0.63 0.321 -0.01 52 -0.01 1.5 -0.05 0.29 1.95
MEAN 0.05 0.32 0.03 3.4 5.5 0.16 577 0.00006 0.0003 1.6 65 0.006 0.08 0.16 0.019 36 0.009 0.21 0.025 0.03 1.2
STD DEV 0 0.08 0.02 7.8 5.5 0.09 81 0.00002 0.0002 0.3 19 0.005 0.16 0.16 0.009 8 0.008 0.35 0 0.06 0.5
#<DL 0 2 0 1 5 0 1 0 16 1 0 0 4 9 1 19 0 5 5 1 17 0
Notes: Blank value indicates analysis not performed for that parameter.
' =" indicates result below laboratory detection limit. 1/2 the detection limit is used for the purpose of calculating mean and standard deviation.
(s) indicates result determined to be anamalous and is not included in the calculation of the summary statistics
FAe: 985 TA T5 x6, 8/f n9B Page Z ar 3