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Home My WebLink AboutGMC Data Report No. 110Vitrinite reflectance data and analysis of the 120 - 12,100 ~foot interval of the Richfield Oil Corporation White River Unit No. 2 well Received 9 February 1989 Total of 27 pages in report Geologic Materials 'Center Data..Report 110 VITRINITE REFLECTANCE ANALYSIS OF THE INTERVAL 120 - 12,100 FT WHITE RIVER #2, ALASKA Introduction This report describes the vitrinite reflectance analysis of 16 cuttings samples from the White River #2 oil exploration well. Fifty vitrinite reflectance measurements for each sample are taken wherever possible utilizing a Zeiss 01K photometer attachment mounted on a Zeiss Pho- toscope 1. Each measurement is qualified as to poor (P), good (G) or excellent (E). Depending upon such factors as;' particle size, pilling; scratching or the proximity to ·pyritic· particles.. Tl~e .-measurements.~.of-particles interpreted ~ to.be-~reworked vitrinife are labeled With an ,'R" While fl~e'measure~ments'0fParticles intemreted tO be"caved .material are. labeled' with a' "C".". A table and a plot-(~f ali measurements displayed as a histogram for each sample are given in Appendix A. A vitrinite reflectance log is included which displays each histogram at the level of the sample. The material considered as caved is cross-hatched in blue while the material considered to be reworked is cross-hatched in red. The good and excellent samples are coloured in solid green while the poor measurements are coloured in cross-hatched green. Further colour copies of this log are available through the Bujak Davies Group. · · The laboratory procedures for the mounting and polishing of the vitrinite samples follows the methodology described by Davies and Avery (1984) in a triple :mount stub with standard 600 gdt, .3 micron and .05 micron polishing procedure on Buehler Automet polishing equipment. This methodology re, surfs in-a Polished mount of unoxidized kerogen. ~ . The levels of vitfinite reflectance are compared to the Thermal AIterationlndex (TAI) of Bujak, Barss & Williams (1977a,b) in Table t-and are subcffVided into various levels of thermal maturation for the generation of liquid and gaseous hydrocarbons, This generation model Will vary from basin tobasin depending upon flie geohistory and kerogen compositions.. .- '-'~'"~' GMC Data Report 110 Page 1/27 · Bujak Davies Group White River #2 ..... 2 .V. ITRINITE REFLECTANCE SUMMARY Mgturi!v Zones based on Ro 120-3,100 4,040-11,620 12,100-12,340 Immature Onset of Maturation possibly Marginally Mature Immature Zone: 120-3.100fl . · '- '.The tWo'Uppermost samples in'this-z, one.!apPearto.-be:entirely'reworked. At. 2,000fla-high mode on thehistogram suggests art':in situ Vitrinite Population With an Ro=0.4%. The 2,940Fr sample contains mostly degraded amorphous material with very liHle vitrinite present. The Ro at this depth is 0.4%. Onset of Maturation Zone: 4.040-11.620ft The first sample, at 4,040ft (Ro=0.594%) is bordering on marginal maturity. Deeper samples, however, have a slightly depressed Ro; some Ro's are as Iow as 0.5%..Most samples in this zone have very good histogram distributions, with the exception.of the 6, lO0ft sample which contains mostly inorganic mud additive with very little vitrinite present. The lowermost samples, at 10,900fl and 11,440ft are assumed to be caved. HOwever, these samples may also contain some indigenous vitrinite, but the..in situ populations are not distinguishable on the histograms. Posslb!v Maralna!!v Mature: 12.100-12.340ft. The one' sampl® in this ~zone is-aimost entirely caved, as ~were ::the tWO overlying samples. However, there appears to be a second peak.on the:histogram,..~- Indicating an Ro=0.615% may represent the in situ population, which is just within the marginally mature zone. GMC Data Report 110 Page 2/27 Bujak Davies Group White River #2 ..... 3 J REFERENCES BUJAK, J.P., BARSS, M.S. & WILLIAMS, G.L. 1977 Offshore eastern Canada Part !. Offshore east Canada's organic type and colour and hydrocarbon potential. Oil and Gas Journal, vol. 75, pp. 198-202. BUJAK, J.P., BARSS, M.S. & WILUAMS, G.L. 1977 Offshore eastern Canada Part 11. Offshore east Canada's organic type and colour and hydrocarbon potential. Oil and Gas Journal vol.75, pp.96-100. DAVIES, E.H. & AVERY, M.P; 1984 A system for Vitrinite reflectance analysis on dispersed organic ... maHer..for Offsh°re'.eaStem-Canada.-In: Geological SurveY of. Canada, 'Paper~ 84-114, :pp.3.GTZ372.~ '.': .. . J II Data Report 110 Page 3/27 Bujok Dovies Group White River #2 ..... 4 TABLE 1: TAI & Ro% TAI Spore Approx. Amorphous colour Ro equiv, kero~len Herbaceous-woody kerol)en 1 Green/Yellow 1+ Yellow 2- Yellow/orange 2-to2 Orange 2 Orange/brown 2to2+ Brown/orange 2+ ~ ' Ligllt.:brown 2+to3- L.Brown/brown 3- Brown 3-to3 Med. brown 3 Brown/dr .brown 3+ Dark brown 4- Black q Black/corroded Illlmature O. 35% Immature 0.45% Immature 0.50% Onset of maturity 0.60% Marginally mature 0.70% Marginally mature 0.9% -- "- '.Peak'imal:urity- ~ .'. 1.0% -Hi§hly mature 1.1% Highly mature 1.2% Highly mature 1.5% Overmature 2.0% Ove rmatu re 2.5% Overmature 4.0% Overmature It~mature Immature Immature Immature Immature. Onset of maturity . -Onset of. maturitY Peak matur, i ty.. Peak maturity Peak maturity Peak maturity Highly mature Highly mature Overmature Table 1: Comparison of Vitrinite Reflectance (Ro~;) and the Thermal Alteration Index scale (TAI) of Bujak, Barss & Williams (1977a,b). GMC Data Report 110 Page 4/27 Bujak Davies Group White River #2 APPENDIX A ~VITRINITE REFLECTANCE MEASUREMENTS AND HISTORGRAMS GMC Data Report 110 Page 5/27 Client: M.M.S. Well: WHITERIVER Area: ALASKA Scientist: DUMCIUS Date: JULY 1988 Samples are: F VITRINITE DATA: Sample Depth : 120.0 0.400 R 0.430 0.590 R 0.610 0.710 R 0.720 Actual Mean ~ 0.622 R 0.470 R 0.490 R 0.550 R 0.630 R 0.630 R 0.660 R 0.720 R 0.730 R 0.730 Actual Standard Deviation = 0.117 0.550 0.660 0.870 0.590 0.710 Con~nent : Occasional large pyrite grains; very little sample present. Sample.Depth : 1200.0 0.390 R 0.430 R' 0.~30 0.480 R 0.480 R 0.490 0.530 R 0.560 R 0.570 Actual Mean -- 0.509 0.440 'R 0.500 R 0.650 R Actual Standard Deviation ~ 0.084 · 0.440 0.510 0.660 0.440 0.520 0.700 '0. 450 0.520 Con~nent : Occasional pyrite; very little sample present. Sample Depth : 2000.0 0.250 C 0.280 C 0.290 C 0.300 C 0.320 C 0.340 0.340 0.360 0.360 0.370 0.370 0.380 0.390 0.390 0.390 0.400 0.420 0.430 0.440 0.460 0.480 R 0.490 R 0.490 R 0.540 R. 0.580 R 0.590 R 0.630 R 0.640 R 0.710 R Actual Mean - 0.438 Actual Standard Deviation - 0.116 Edited Mean - 0.393 Edited Standard Deviation - 0.035 Comment : Abundant inorganic amorphous material present. 0.310' 0.360 0.380 0.400 0.460 0.540 0.650 0.320 0.360 0.380 0.420 0.460 0.560 0.650 0.320 0.360 0.380 O. 420 O. 480 0.560 0.700 GMC Data Report 110 Page 6/27 'l Sample Depth : 2940.0 0.240 C 0.280 C 0.310 C 0.320 C 0.320 C 0.370 0.380 0.380 0.410 0.420 0.450 0.470 0.480 R 0.520 R 0.550 R Actual Mean : 0.401 Actual Standard Deviation = 0.087 Edited Mean = 0.405 Edited Standard Deviation = 0.042 Comment : Abundant inorganic amorphous material; very little vttrintte present. O. 340 O. 440 0.550 Sample Depth : 4040.0 0.380 C 0.390 C 0.400 C 0.520 0.520 0.540 0.580 "P 0.580 0,580 0.630 0.630 0.630 0.670 0..690.~- ' 0.-690 .0.730. R ' 0.730 *R 0.730 R' : · 0.410 C 0.420 C 0.540 0.540 0.610 0.610 0,640 0.640 .0.:710 R 0~7,10 '~-R .. . o.~do e"-' 0,~0 -R . 0.440 0.560 0.610 0.640 0~720-~' _* '0.800 -_ Actual Mean = 0.612 Actual Standard Deviation = 0.117 Edited Mean '= 0.594 Edited Standard Deviation = 0.061 Comment : Common pyrite; abundant amorphous Inorganic material; little vttrtntte present. Sample Depth : 5020.0 O. 360 0.440 0.510 0.570 0.620 0.660 0;720' 0.87b _ ..~ 0.410 0.410 0.410 0.430 0.430 0.430 0.440 0.440 0.460 0.460 0.470 0.470 0.470 0.480 0.480 0.480 0.480 0.490 0.490 0.500' - 0.500 0.500 0.500 0.500 0.510 0.510 0.510 0.510 0.520 0.520 0.520 0.520 0.530 0.530 0.540 0.560 0.560 0.560 0.560 0.560 0.580 0.580 .,~1~ 0.610 0.620 0.620 0.640 0.660 0.670 0.680 0.910 R Actual Mean - 0.524. Actual Standard Deviation - 0.088 Edited Mean - 0.517 Edited Standard Deviation - 0.068 Comment : Common pyrite; abundant amorphous inorganic material; little vttrtntte present. t. g ' ..~ ..... .... ~ ~n Paoe 7/27 Sample Depth : 6100.0 O. 220 C O. 390 C 0.410 C 0.560 0.560 0.610 P 0.660 Actual Mean - 0.487 Actual Standard Deviation = 0.154 Edited Mean = 0.598 Edited Standard Deviation : 0.048 Comment : Abundant cork; very little vttrinite present. Sample Depth : 6940.0 0.400 0.410 O. 460 O. 460 0.490 0.500 0.540 0.540 O. 540 O. 540 0.550 0.560 O. 580 0. 580 0.790 R Act*ual Mean "= 0~529 0.410 0.420 0.460 0.470 0.500 0.510 0.540 0.540 0.540 0.540 0.560 0.560 0.600 0.630 . -: · . Actdal-standard Deviation ~'0,074 0.420 O. 470 0.510 0.540 0.550 O. 560 0.640 0.430 0.450 O. 480 O. 490 0.510 0.520 0.540 0.540 O. 550 O. 550 0.570 0.580 0.650 0.690 .. . . . · Edited Mean = 0.524 Edited Standard Deviation : 0.064 Comment : Occasional pyrite; abundant degraded amorphous inorganic material; abundant vitrinite present. Sample Depth : 7820.0 0.410 0.420 0.420 0.430 0.430 0.430 0.440 0.440 0.440 0.440 0.450 0.450 0.460 0.470 0.470 0.480 0.480 0.480 0.480 0.490 0.490 0.500 0.520 0.520 0.520 0.520 0.520 01.540 0.550 0.560 0.560 0.560 0.570 0.580 0.580 0.580 0.590 0.590 0.590 0.590 0.590 0.590 0.610 0.610 0.610 0.620 0.650 0.660 0.670 0.800 R Actual Mean - 0.529 Actual Standard Deviation - 0.081 Edited Hean - 0.523 Edited Standard Deviation - 0.072 Comment : Occasional Pyrite; occasionally oxidized vttrtntte present. GMC Data Report 110 Page 8/27 J Sample Depth : 8540.0 0.370 C 0.440 0.450 0.480 0.490 0.510 0. 520 0. 520 0. 530 O. 530 O. 530 O. 530 O. 540 O. 540 O. 540 O. 550 0. 550 O. 560 O. 560 O. 560 O. 570 O. 570 O. 570 O. 570 O. 590 O. 610 O. 610 O. 620 O. 620 O. 620 O. 640 O. 650 O. 650 O. 650 O. 660 0.770 R Actual Mean : 0.568 Actual Standard Deviation = 0.072 Edited Mean = 0.564 Edited Standard Deviation = 0.056 Conment : Occasional pyrite; abundant degraded amorphous materlal present. Sample Oepth : 9320.0 '/ O~ 420 O. 420 ·m.. 0.44'0 · 0~'440 -. O. 46O O. 460 0.480 0.400 - 0.510 0.510 0.530 0.530 0.560 0.560 1~.670 O. 430 O, 430 . :0.440 0 ~450 " ~ .... ' · - 0;450 - - 0;.450'- *. · ' 0,'4.70' ' 0,.470 0.480 '- O. 490 O. 490 O- 500 0.510 0.520 0.520 O. 530 O. 540 O. 540 O. 560 O. 580 O. 580 Actual Mean = 0.503 Actual Standard Deviation = 0.059 Edtted Mean = 0.503 Edited Standard §evlatlon = 0.059 Conment : Occasional pyrite; abundant degraded amorphous materlal present. Sample Depth : 9700.0 0,400 0,410 0,410 0.420 0.450 0,460 0,480 0.490 0.490 P 0,490 0,500 P 0,510 0,510 0.520 0.530 0.530 0.540 0.550 0.550 0.550 0,560 0,560 0,560 0,580 O.:580 0,610 0,640 0,670 Actual Heart .- 0,522 Actual Standard-Deviation "0,062 . Edtted Heart - 0.522 Edtted Standard Deviation - 0.062 Coneent: LJttle vttrtntt~ and s'aeple present. '~"~ 0.490 0.490 0.530 0.530 0.550 0.550 0.550 0.560 0.590 0.600 0.630 0.630 0.680 0.740 0.440 0.440 ':0.460 - - ' 0:460: 0.480 ' *-:0.480 :- . _ 0.500 0.500 0.520 0.530 0.560 0.560 0.630 0.660 0.460 0.460 0.500 0.500 0.530 0.530 0.560 0.560 '0.580 0.590 Paqe 9/27 '; Sample Depth : 10280.0 0.410 0.440 0.450 0.450 O. 460 O. 460 O. 480 O. 480 0.510 0.520 O. 540 O. 540 0.550 0.560 0.760 R Actual Mean : 0.508 Edited Mean = 0.503 Con~nent : Occasional 0.440 0.440 0.440 0.450 0.450 0.460 0.460 0.470 P 0.470 0.490 0.490 0.500 0.520 0.520 0.520 0.540 0.540 0.550 0.570 0.590 0.630 Actual Standard Deviation : 0.069 Edited Standard Deviation - 0.060 pyrite; abundant degraded amorphous material present. O. 440 O. 460 0.470 0.500 0.520 0.550 0.670 0.440 0.460 0.480 0.510 0.530 0.550 0.690 Sample Depth : 10900.0 0.320 .C 0.340 C 0;350 C 0.350 C 0.350 C 0.380 C. .0,380" C-' ' 0.380 C' 0.380 C -0.390 :-- C 0.400 C 0..400 C 0.400 C 'O.400. c o;4io- c 0~410 C .0.42.0 C 0.420' C 0,420 ' ¢ .0.430 C' 0.460 C 0.460 C 0.460 C 0.460 C 0.460 C O. 480 C O. 480 C O. 490 C O. 490 C O. 490 C 0.520 C 0.530 C 0.530 C 0.530 C 0.550 C O; 580 C Actual Mean = 0.440 Actual Standard Deviation = 0.065 0.360 -' '0~390 ' 0.410 .. O. 450 0,470 0.500 O.550 C C C C C C 0.370 -P;390 -0.410 0.450 O. 480 0.510 0.560 Con~nent : Occastoanl pyrite; abundant degraded amorphous material present. Sample Depth : 11440.0 O. 320 C O. 340 C O. 350 C O. 360 C O. 360 C 0.410 C 0.410 C 0.410 C 0.410 C 0.420 C O. 420 C O. 430 C O. 430 C O. 430 C O. 430 C O. 440 C O. 440 C O. 450 C O. 450 C O. 450 C 0.450 C 0.450 C 0.470 C 0.470 C 0.480 C 0.490 C 0.500 C 0.500 C 0.510 C 0.510 C 0.510 C 0.510 C 0.520 C 0.620 C 0.530 C 0.560 C Actual Mean = 0.451 Coanent : Occasional Actual Standard Oevtatlo~ 'IO~056 pyrite; abundant degraded amorPhous.material present. 0.360 0.420 0.440 0.450 0.480 0.510 0.540 0.390 0.420 0.440 0.450 0.480 0.510 0.540 · GMC Data Report 110 Page 10/27 Sample Depth : 12100.0 O. 360 C 0.360 C 0.380 C O. 380 C O. 390 0.420 C 0.430 C 0.440 C 0.440 C 0.440 0.460 C 0.450 C 0.450 C 0.470 C . 0.470 O. 480 C O. 480 C O. 480 C O. 490 C O. 500 0.520 C 0.530 C 0.530 C 0.530 C 0.540 0.570 C 0.580 C 0.590 0.590 0.590 O. 610 O. 610 O. 610 O. 620 O. 630 0.660 Actual Mean = 0.508 Actual Standard Deviation = 0.082 Edited Hean = 0.615 Edited Standard Deviation = 0.023 Con~nent : Occasional pyrite; abundant degraded amorphous material present. O. 400 O. 450 O. 470 0.510 O. 560 0.600 O. 630 C C C C C O. 420 O. 460 0.470 0.510 0.570 O. 600 0.650 GMC Data Report 110 Page 11/27 BUJAK DAVIES GROUP ' VITRINITE WHITERIVER #2 SAMPLE ' ::t20f Population Hean Standard Deviation In 8itu Caved Reworked Total 0 0 Total measurementa this aemple : 20 .3 .4 .5 .6 .8 ! J.5 2 3 4 I I I I I J I I I I ~ " i I .3 .4 .5 .6 .8 :1 :~.~ g 3 - . . Csved In Situ Reworked , GMC Data Report 110 Page 12/27 BUJAK DAVIES GROUP ' VITRINITE WHITERIVER #2 SAMPLE ' ~200f Popu)at~on Mean Reworked 0'5t Total 0.5~ Total measurements this sample : ~0 Standard Deviation 0.08 0.08 .3 .4 .5 .6 .8 t .5 2 3 4 GNC Data Report 110 Page 13/27 8UJAK DAVZES GROUP · VITRTNITE WHITERIVER #2 SAMPLE · 2000f Popu)et~on Mean Standard Deviation Zn Si~u O.3g 0,04 Oared 0.30 0.02 Reworked 0.~8 O.Oa Total 0.44 0.~2 Total meaauremente thie eamp3e : 50 .3 .4 .5 .6 .8 $ J,5 2 3 4 GMC Data Report 110 Page 14/27 BUJAK DAVIES GROUP · VITRINITE WHITERIVER #2 SAMPLE · 2940f Popu3ation Mean Standard Deviation Zn S~tu 0.4~ 0.04 Caved 0.2g 0.03 ReworRed 0.~3 0.03 Totm! 0.40 O.O8 Tota] meaeupamente thia mamp~e : ~o ,3 .4 .§ .6 I I I C~ved 1.5 1.5 2 3 4 I I ! .:- Rewor'ked GMC Data Report 110 Page 15/27 ; · BUJAK DAVIES GROUP ' VITRINITE WHITERIVER #.2 SAMPLE · 4040f Popu3mt~on Haan Zn 8itu O.D9 0.05 Caved 0.40 0.02 flewopkad 0.7~ 0.0~ Total 0.8~ O.&2 .3 .4 .5 ,6 .8 I .5 2 3 4 Caved ]~n Sttu Re~o~ed GMC Data Report 110 Page 16/27 BUJAK DAVIES GROUP : VITRINITE WHITERIVER #2 SAMPLE · 5020f Population Mean Standard Deviation Zn 8t~u 0.~2 0.07 Caved - - Reworked O.9t -- Tote! 0.52 0.09 Tota! maaau~e'men~a this aamp]e : 50 ,3 .4 .5 .6 .8 :t .5 2 3 4 I I I I I · I I I i:...-i .~ :' ,: . .',_. _ , Caved 'Zn Situ Reworked . . . , , GMC Data Report 110 Page 17/27 BU,JAK DAVIES GROUP : VITRINITE WHITERIVER #2 SAMPLE ' 6:IOOf Populetion Mean In Situ 0,80 0.09 Caved 0.34 0,10 Total 0.49 0.~5 ..- . Tote3 meaeupemente thA~ eample : ,3 .4 ,5 ,6 .8 ~ i.5 2 3 4 . I I I I I I . I. 1 . · ' I ' i I ' i.~1 i_i' ,i I · . .3 .4 .5 '18 ",8 I t.5. 2 3 4 . ~ . . Cevmcl ~n Si~U GMC Data Report 110 Page 18/27 BUJAK DAVIES GROUP ' VITRINITE WHITERIVER #2 SAMPLE · 6940f Popu)at~on Mean Standand Deviation Xn ~itu O.~a 0.0~ Caved -- -- Reworked 0.70 -- Total 0.53 0.07 Tota! meaauremente thia aamp3e : 50 .3 .4 .5 .6 I I I .3 .6 I .4 -.5 .6 .6 '~' t zn situ 1.5 2 I GMC Data Report 110 'Page 19/27 BUJAK DAVIES 6ROUP ' VTTRTNTTE WHTTERTVER SAMPLE ' 7820f Populs~ion Mean ~n 8itu 0.~2 0,O7 Caved -- -- Reworked 0.80 - Total 0.~3 0,08 Total measupemente thia eampie : 50 . .3 .4 .5 .6 .8 ~ I I i I I .3 .4 .S ,6 2 3 4 I ! I Reworked I . GMC Data Report 110 Page 20/27 BUJAK DAVIES GROUP · VITRINITE WHITERIVER #2' SAMPLE · 8540f Popular&on Me.n Standard Bev&at&on Zn 8itu O.~G 0.0~ Caved 0.37 -- RewoPked 0,75 0.02 To~al 0.~7 0.07 Tota3 meaauPam~nta thia aampl~ : ~0 , Caved .3 ,4 .5 .6 ! I I .8 I t.5 2 I Rawor, l<ed GMC Data' Report 110 Page i71/27 ._ BUJAK DAVTES GROUP : VTTRTNTTE WHITERIVER #-2 SAMPLE · 9320f Popu~a~ion Hean ~n 8itu 0.50 O.OG Caved - -- Rawopked - Total 0.50 0.06 .3 .4 .§ .6 I -..I I I 2 3 4 I I I Caved .3 ReNor'l<ed ' GMC Data Report 110 Page 22/27 BUJAK DAVIES GROUP ' VITRINITE WHITERIVER #2 SAMPLE ' 9700f Population Haan' standapd Deviation Zn 8itu o.~2 0.08 Caved -- -- Rawop~ad -- -- Total 0.52 O.OG Totm~ maaauPamanta ~ia aampla : 38 .3 .4 .§ .ii I I I ' 1.5 2 3 4 I I Caved · 4 ,5 .6 _ r, ur- n..~--, o~+ ~ ~n Paae 23/27 BUdAK DAVIES 6ROUP · VITRINITE WHITERIVER SAMPLE · 10280f Population Mean Stendapd Deviat~on In Situ 0.~0 O.OB Oared -- - Reworked 0.?8 - · Total 0.~ 0.07 Tota3 meaeuremente thte eemple : BO I I I , .:- · $.fl' 2 3 4 Reworl<ad GMC Data Report 110 Pa~qe 24/27 mm BUJAK DAVIES GROUP · VITRINITE SAMPLE ' Jogoof NHITERIVER ¢/--2 Population Mean Standard Caved 0.44 0.06 RawoPkad -- -- Tote3 0.44 O.OB Totm3 mmmmu~emente thtm mmmpZm : 50 il,,, ,3 ,I .. .8 .8 ,8 I I I RMC Data Rennrt 110 Page 25/27 BUJAK DAVIES GROUP ' VITRINITE WHITERIVER #-2 SAMPLE ' '1.1.440f Population Mean Standapd Dev&ation Caved 0.4~ 0.08 Total 0.4~ 0.06 Total memmu~emente thim ammPZe : ~0 I I I I I ..I I ,I . · ' .- ,,, ~,,, ,,- ,, . ,¢~-,~ ;.', ~ ,- ,:, ! I - _ ' ' I I '" '~ :~ ~" ' ~a ' '.4 '~:W .e' " .8: t 't.5 '~ 3 4 . . Caved Zn 8itu ?,MC Data RP_nnrt ll(1 Paae 26/27 BUJAK DAVIES GROUP : VITRINITE SAMPLE ' :l. 2::i. OOf WHITERIVER #2 Population St~nd~rd Oev&at~on Zn 8itu 0.~ 0.02 Oavad 0.47 O.O6 flawoPked -- -- . Total 0.81 0.08 To~a~ maaau~am~n~a thie ~amp~a-:-~0 ..3 .4 .5 .6 .8 I t.5 2 3 4 GMC Data Report 110 Page 27/27