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TABLE 4Composite List of Reptiles and Amphibians Observed in Tidal Freshwater WetlandsThroughout Delaware
__________________________________Du Pont-Newport Environmental Evaluation_________________
Common name_________ Scientific name_______________ <f, (/? *? ""/ <4
NewtsEastern newt Notophthalmus viridescensNorthern dusky salamander Desmognathus fuscusTwo-lined salamander Eurycea bislineataFour-toed salamander Hemidactylium scutatum
ToadsAmerican toad Bufo americanusWoodhouse's toad Bufo woodhousei
TreefrogsNorthern cricket frog Acris crepitansSpring peeper Hyla cruciferStriped chorus frog Pseudacris triseriata
True frogsBullfrog Rana catesbeianaGreen frog Rana clamitansWood frog Rana syivaticaPickerel frog Rana palustrisNorthern leopard frog Rana pipiens pipiensSouthern leopard frog Rana pipiens sphenocephala
TurtlesCommon snapping turtle Chelydra serpentinaEastern mud turtle Kinosternon subrubrumStinkpot Stemothaerus odoratusEastern painted turtle Chrysemes pictaRedbelly turtle Chrysemes rubriventrisSpotted turtle Clemmys guttataWood turtle Clemmys insculptaBog turtle Clemmys muhlenbergiMap turtle Graptemys geographicaFalse map turtle Graptemys pseudogeographicaDiamondback terrapin Malaclemys terrapinEastern box turtle Terrapence Carolina
SkinksFive-lined skink Eumeces fasciatus
SnakesBlack rat snake Elaphe obsoletaCommon kingsnake Lampropeltis getulusRed-bellied water snake Nerodia erytrogasterNorthern water snake Nerodia sipedonBlack racer Coluber constrictorRough green snake ' Ophedrys aestivusQueen snake Regina aeptemittataNorthern brown snake Storeria dekayiEastern ribbon snake Thamnophis sauritisEastern garter snake Thamnophis sirtalisRingneck snake Diadophis punctatusCopperhead Agkistrodon contonrix ______________
Source: Odum et al., 1984 ' A R J I 5 I j 8 enevali x
TABLE 5Common Names of Bird Species Sighted in Churchman's Marsh
1965-1966 and 1980Du Font-Newport Environmental Evaluation
Common LoonPied-Billed Greb«Double-Crested Cormorant *Great Blue HeronGreen HeronLittle Blue HeronCattle EgretGreat EgretSnowy EgretBlack-Crowned Night HeronGlossy IbisCanada GooseMallardBlack DuckGadwallPintailGreen-Winged TealBlue-Winged Teal +American WigeonNorthern Shoveler +Wood DuckHooded MerganserCommon MerganserTurkey VultureSharp-Shinned HawkRed-Tailed HawkRed-Shouldered HawkMarsh HawkOspreyAmerican KestrelBobwhiteRing-Necked PheasantCommon Gallinule +American CootKilldeerSpotted SandpiperGreater YellowlegsLesser YellowlegsPectoral Sandpiper +Least Sandpiper +Semipalmated Sandpiper +Greater Black-Backed GullHerring GullRing-Billed GullForster's TernCommon Tern +
Royal Tem *Caspian TernRock DoveMourning DoveYellow-Billed CuckooGreat Homed OwlChimney SwiftRuby-Throated HummingbirdBelted KingfisherCommon FlickerRed-Bellied WoodpeckerYellow-Bellied SapsuckerHairy WoodpeckerDowny WoodpeckerEastern KingbirdGreat Crested FlycatcherEastern PhoebeAcadian Flycatcher •Eastern Wood PeweeHomed Lark +Tree SwallowBank SwallowRough-Winged SwallowBam SwallowPurple MartinBlue JayCommon CrowFish CrowBlack-Capped ChickadeeCarolina ChickadeeTufted TitmouseWhite-Breasted NuthatchBrown CreeperHouse WrenCarolina WrenLong-Billed Marsh WrenMockingbirdGray CatbirdBrown ThrasherRobinWood ThrushHermit ThrushSwainson's ThrushVeeryEastern BluebirdBlue-Grey Gnatcatcher
Golden-Crowned KingletRuby-Crowned KingletCedar WaxwingStarlingWhite-Eyed VireoRed-Eyed VireoWarbling Vireo *Black & White WarblerParula Warbler +Yellow WarblerMagnolia WarblerYellow-Rumped WarblerBlack-Throated Green WarblerBlackpoll Warbler +Palm Warbler +OvenbirdKentucky WarblerCommon YellowthroatYellow-Breasted ChatCanada WarblerAmerican RedstartHouse SparrowBobolinkEastern MeadowlarkRed-Winged BlackbirdOrchard OrioleNorthern OrioleCommon GrackleBrown-Headed CowbirdScarlet TangerCardinalRose-Breasted GrosbeakBlue GrosbeakIndigo BuntingPurple finchHouse finch •American GoldfinchRufous-Sided TowheeSavannah SparrowVesper Sparrow +Dark-Eyed JuncoTree SparrowField SparrowWhite-Throated SparrowFox SparrowSwamp Sparrow .Song Sparrow
Source Delmarva Ornithologist. Vol. 16. Summer. 1983+ denotes species seen in 1965-66 only. •denotes species seen in 1980 only, all others were seen mjno both surveysfliuibi |g enevalS *IS
TABLE 6Composite List of Mammals Observed in Tidal Freshwater Wetlands Throughout Delaware
Du Font-Newport Environmental Evaluation
Common Name
Virginia OpossumMasked ShrewShort-Tailed ShrewStar-Nosed Mole +Eastern MoleSilver-Haired BatBig Brown BatEastern CottontailGray SquirrelWoodchuckBeaver +Marsh Rice Rat +White-Footed MouseMeadow Vole +Muskrat +House MouseNorway RatMeadow Jumping MouseEastern Raccoon +Long-Tailed WeaselMink +Striped SkunkWhite-Tailed Deer
Scientific Name
Didelphis VirginiansSorex cinerusBlarina brevicaudaCondvlara cristateSea/opus aquaticusLasionycteria noctivagansEpteaicus fuscusSylvilagus floridanusSciurus carolinensisMarmota monaxCastor canadensisOryzomya palustrisPeromyscus leucopusMicrotus pennsylvanicusOndatra zibethicusMus musculusRattus norvegicusZapua hudsoniusProcyon lotorMustela irenataMustela visonMephitis mephitisOdocoileus virginianus
Source: Odumetal., 1984.+ denotes year-round residents.
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TABLES
WATER QUALITY CRITERIAFOR THE PROTECTION OF FRESHWATER AQUATIC LIFE (PPB)
DUPONT-NEWPORT ENVIRONMENTAL EVALUATIONUSEPA DNREC
Parameter Acute Chronic Acute Chronic
Alkalinity 20,000Aluminum 750 87Antimony 9,000* 1,600*Arsenic +5 850* 48*Arsenic+3 360 190 360 190Beryllium 130* 5.3*Cadmium 3.9+ 1.1+ 3.9+ 1.1 +Chromium +6 16 11 16 11Chromium +3 1,700+ 210+ 1,700+ 210+Copper 18+ 12+ 18+ 12+Cyanide 1,000 22 5.2**Iron 1,000 1000Lead 82+ 3.2+ 82+ 3.2+Mercury 2.4 0.012 2.4 0.012Nickel 1400+ 160 1400+ 160+Selenium 260 35 20 5Silver 4.1+ 0.12 4.1+ 0.12Thallium 1,400* 40*Zinc 120+ 110+ 120+ 110+
* Lowest Observed Effect Level.** Free cyanide at lowest pH occurring in receiving water.+ Hardness Dependent; value listed is based on 100 ppm as CaCOjj measured values
in wetlands near the North and South Disposal sites range from 104 to 183 ppmCaCOg.
Source: U.S. EPA Quality Criteria for Water 1986; updated 1987 (Criteria for theProtection of Freshwater Life).State of Delaware Surface Water Quality Standards, As Amended February2, 1990 (Criteria for the Protection of Freshwater Aquatic Life).
EE Rpt/Tables/88C207fr4V/DPN5 A R 3 1 5 I 4-29-92
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TABLE 11
PHASE II SAMPLING AND ANALYSIS PLANSEPTEMBER 1988
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
Toxicity Plant Tissue SurfaceSediment1-7) Benthos Testing Analysis Watei*4'7*
NORTH DISPOSAL SITEAS12 X X X XAS06 X X XAS07 X X XAS08 X X XAS09 X<*> X X XSR13 ( 6 ) X X X XRS14(6) X X X X
SOUTH DISPOSAL SITEAS01 X?> XAS03 X X X X<5>AS05 X X X?>CONTROL (RS15) X X
CHRISTINA RIVERRS15 (New Reference) X<*> X XRS01 (Relocated) X X XRS11 X X XRS12 X X XRS07 X<2) X X
TOTAL NUMBER OF SAMPLES: 37 6tf3) 14 24 10
Notes:
(1) Sediments collected at depths of 0-6" and 6'12" except where noted.(2) Sediment collected at 3 depths: 0-6", 6-12", and 12'18".(3) Thirty-six to be analyzed, 24 to be archived.(4) Unfiltered and filtered water samples collected at all stations except where indicated.(5) Unfiltered samples only.(6) Sample locations are in Christina River near mouth of North Disposal site drainage ditch.(7) Surface water and sediment samples analyzed for TAL metals.
EE Rpt/Tab!es/88C2076-4V/DPN5 fl R 3 I 5 j 2 6 4"29"92
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TABLE 19
ENVIRONMENTAL EXPOSURE SCENARIOSDUPONT-NEWPORT ENVIRONMENTAL EVAUATION
______________EXPOSURE SCENARIO________
Location Exposure Route Pathway Receptor
North Disposal Site • direct contact • soils • mammals, herptiles,birds & flora
• ingestion
North Disposal Site • direct contactDrainageway
soils • mammals, herptiles,fauna , & birdsflorasurface water • mammals, herptiles,sediments birds, fish, benthos,
& flora• ingestion • surface water • mammals, herptiles,
• pediments birds, fish, &• fauna benthos• flora
South Disposal Site • direct contact • soils • mammals, herptiles,birds, & flora
ingestion
South Disposal Site • direct contactPond
• ingestion
South Disposal Site • direct contactWetlands
ingestion
Christina River • direct contact
soils • mammals, herptiles,fauna & birdsflorasurface water • mammals, herptiles,sediments birds, fish, benthos,
& florasurface water • mammals, herptiles,sediments birds, fish & benthosfaunaflorasurface water • mammals, herptiles,sediments birds, fish, benthos,
& florasurface water • mammals, herptiles,sediments birds, fish & benthosfaunaflorasurface water • mammals, herptiles,sediments birds, fish, benthos,
& flora• ingestion • surface water • mammals, herptiles,
• sediments birds, fish & benthos• fauna• floraUR3I5U2
EE Rpt/Tables/88C2076-4V/DPNS 4-29-92
TABLE 20
GEOMETRIC MEANS (PPM) OF SEDIMENT SAMPLESDUPONT-NEWPORT ENVIRONMENTAL EVALUATION
Ba Cd Cr Cu Pb Hg Zn
South Disposal Site PondAS01 12467 71 47 270 1417 0.37 5800AS02 7950 36 44 285 1820 0.5 3940Geo. Mean 9956 50.6 45.5 277 1606 0.43 4780
South Disposal Site DrainageAS03 21180 40.8 52 1107 5003 0.77 11140AS04 21500 13.0 60 307 904 - 1380AS05 17400 45.7 67.7 260 576 0.60 3870Geo. Mean 19936 28.9 59.6 445 1376 0.68 3904
North Disposal Site DrainageAS06 769 9.1 287 515 627 0.9 1228AS07 3957 52.4 376 2467 19353 6.5 12290AS08 1707 21.1 270 624 4845 1.45 2875AS09 1510 27.5 300 529 4160 1.35 3730AS12 1710 6.9 115 190 550 0.30 740Geo. Mean 1681 18.0 251 603 2665 1.28 2604
AS10/AS11AS10 265 3.6 37.7 55.3 150 0.32 849ASH 500 12.8 66.2 157 395 0.51 2520Geo. Mean 364 6.8 50 93.2 243 0.40 1463
Christina RiverRS03 266 5.2 54 59 156 0.7 1240RS09 139 1.1 42.4 18.3 21.6 0.21 193RS13 189 0.75 43.9 27.1 27.1 0.20 96.3RS14 249 2.5 52.7 29.6 152 0.20 169RS01 334 3.0 43 27.6 132 0.25 655RS11 12000 367 488 130 2170 1.30 10500RS12 1770 1020 427 147 1440 0.50 12500RS07 1561 4 58.8 29.1 53 0.21 555RS10 162 0.85 36 11.6 10.6 0.17 103RS06 917 11 289 80 477 0.80 2945RS08 583 0.9 56 40 56.4 0.19 640RS02 339 3.0 60 49 151 0.3 812RS05 6330 19 138 128 301 0.8 3370Geo. Mean 648 6.3 85.7 45 133 0.36 837
AR3I5U3EE Rpt/T»bIes/88C2076-4V/DPN5 4-29-92
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TABLE 22
WEIGHTED GEOMETRIC MEAN CALCULATIONS (XWG)FOR RS15 NUPHAR TISSUE SAMPLES
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
____________Reference Station RS15______________X X XWG
Element Root Rhizome Leaf Whole Plant
Ba 387 146.5 85.6 120.78Cd 2.6 <.88 <1.04 1Cr 5.5 <2.0 <1.83 2.02Cu 12.3 7.95 7.2 7.76Pb 20.8E 5.65E 3.33E 4.75Hg <323R <.176R <.181RZn 116 103 47.2 72.94
X = arithmetic meanXG = geometric meanXWG = weighted geometric mean
Note: All Hg data are unusableAll Data in ppm dry weight (DW)
E = Estimated (used where present in original table, and where at best one valuewas identified with the < symbol).
R = Rejected
- _ '5 * log (rhizome) * 4.5 * log (leaf) + O.S * log (root)] ^XWG in anmog10 J
EE Rpt/Tibles/88C207MV/DPNS 4-29-92
ftR3l5lt(5
TABLE 23
INGESTION PARAMETERS FOR TERRESTRIAL RECEPTORSDUPONT-NEWPORT ENVIRONMENTAL EVALUATION
Heron*1* Muskrat(2) Mouse® Rat(4) Mallard<5)
weight (kg) 3 1.5 0.025 0.20 1.10
food intake (FI) kg-DW/day) «0.10[matrix effect<6)] 0.0119 0.0118 0.0004 0.0150 0.0620
% sed/soil in diet(7) 10% FI 5% FI 2% FI 2% FI 10% FI
sed/soil intake (SI)(kg/day) 0.0012 0.0006 0.000008 0.0003 0.0062
(1) Great blue heron weight from Newell et. al. (1987); food intake calculatedfrom Table 24.
(2) Muskrat weight from Rue (1981); food intake calculated from Table 24.(3) Mouse weight from SAX (1989) and Grzimek (1990); food intake calculated
from Table 24.(4) Rat weight and food intake from SAX (1989), adult sex unspecified.(5) Mallard duck weight from Teres (1991); food intake calculated from Table 24.(6) Matrix effect of 10% was applied only in the calculation of chemical in food
intake for heron, muskrat, and mouse; matrix effect is not used inthe conversion of dietary level to screening dose for mouse, rat, or mallard(Table 25).
O % sed/soil in diet based on percentage of food intake; percentage of food intakevalues based on Garten (1980) and Goodman, D.C. and Fisher, ELL (1962);muskrat value estimated.
EE Rpt/Tables/88C2076-4V/DPN5 . 4-29-92
AR3J5U6
TABLE 24
FOOD INTAKE (FI) EQUATIONS FORTERRESTRIAL SCENARIOS
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
Animal _______Equation________ Animal Type Source
Bird 0.0582(wt)e0.651(kg)[-63 to + 169%]* all birds Nagy (1987)
Muskrat 0.0577(wt)e0.272(g)[-62 to + 161%]* Herbivores Nagy (1987)
Mouse/Rat 0.0621(wt)e0.564(g)[-58 to +161%]* Rodents Nagy (1987)
* 95% confidence interval of the FI as a percent of the predicted FI.
EE Rpt/Tabl«/88C2076-4V/DPN5 _ 4-29-92
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TABLE 26
SELECTED TOXICITY SCREENING INTAKEVALUES FOR TERRESTRIAL RECEPTORS
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
ScreeningTest Intake Value
Metal Organism (mg/kg-BW-day) Basis for Median Value Section
Lead Muskrat 79 3 rat studiesMouse 71 1 shrew/5 mouse studiesHeron 26.25 2 kestrel studies
Cadmium Muskrat 2.3 7 rat studiesMouse 0.89 1 shrew/4 mouse studiesheron 0.64 1 black duck/3 mallard studies
Chromium Muskrat 0.24 1 rat studyMouse 0.26 1 mouse studyHeron 0.56 1 black duck study
Mercury Muskrat 0.2 1 rat studyMouse 2 1 mouse studyHeron 0.11 1 bird/1 starling/2 quail studies
Copper Muskrat 30 3 rat studiesMouse 15.5 2 mouse studiesHeron 14.51 2 mallard studies
Zinc Muskrat 30 11 rat studiesMouse 2.2 3 mouse studiesHeron 20.85 1 mallard/1 duckling study
Barium* Muskrat 10 1 rat studiesMouse 10 1 mouse studyHeron 10 no studies available
* For barium as barium sulfate, 10 mg/kg BW-day was selected as a conservative valuefor all speices based on the limited nature of the available information.
EE Rpt/Tables/88C207fr4V/DPN5 4-29-92
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MAP SOURCE:USGSMAP7.5 MINURE SERIES (TOPOGRAPHIC)WILMINGTON SOUTH, DELAWARENEW JERSEY QUADRANGLE WOODWARD-CLYDE CONSULTANTS, INC.
CONSULTING ENGINEERS, GEOLOGISTS AND ENVIRONMENTAL SCIENTISTSWAYNE, NEW JERSEY
SCALE: AS SHOWN PROJ. NO.:
DATE: MAY 1 1991 FIG. NO.:
SR3I5166
DUPONT NEWPORTSITE AREA
2000 4000 FT
SCALE
SITE AREA - 1987DUPONT - NEWPORT ENVIRONMENTAL EVALUATION
MAP SOURCE:USGSMAP7.5 MINURE SERIES (TOPOGRAPHIC)WILMINGTON SOUTH, DELAWARENEW JERSEY QUADRANGLEPHOTOREVISED1987 CONSULTING ENGINEERS. GEOLOGISTS AND ENVIRONMENTAL SCIENTISTS
WOODWARD-CLYDE CONSULTANTS, INC.
WAYNE, NEW JERSEY
DR. BY: MG
CICD BY: GR
SCALE: AS SHOWN | PROJ. NO.: 88C2076
DATE: MAY I 1991 FIG. NO.:
AR3I5I67
UNSCANNED ITEM(S)
ONE OR MORE OF THE FOLLOWING ITEMS MAY BE ASSOCIATEDWITH THIS DOCUMENT:
PHOTOGRAPHSDRAWINGS
OVERSIZED MAPSROLLED MAPS
PLEASE CONTACT THE CERCLA RECORDS CENTER TO VIEW THEITEM(S)
r = 0.50, significant at p = .001n = 42 +
4
0 20 40 60 80 100Mud (wt % < 63 urn)
r = 0.15, not significantn = 42 +
++ +
0 20 40 60 80 100Organic Matter (wt %)
LEGEND:
T RIVER STATIONS
WETLAND AND DRAINAGEWAY STATIONS CORRELATION/REGRESSION PLOTS OF ALUMINUMwtiLAiNU AND UKAiNAbtWAY biAHUNb VERSUS SEDIMENT MUD AND ORGANIC CONTENTREGRESSION LINE
NEWPORT, DELAWARE— — —— 95% CONFIDENCE INTERVAL
R«v. No. Data Typa of Ravlalon Chackad fay
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
©Woodwtvd-dyd* ConwttantoConsulting Engineers, Geologists and Environmental Scientists
Job No.: 88C2076-4V Drawing No. 80769110Drawn by: DEGScale:
Checked by:
AS SHOWN
Date: 04/21/1992
FIGURE 6
flR3l5i7l
UNSCANNED ITEM(S)
ONE OR MORE OF THE FOLLOWING ITEMS MAY BE ASSOCIATEDWITH THIS DOCUMENT:
PHOTOGRAPHSDRAWINGS
OVERSIZED MAPSROLLED MAPS
PLEASE CONTACT THE CERCLA RECORDS CENTER TO VIEW THEITEM(S)
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Rav. No. Data Type of Revision
CONCEPTUAL TRANSPORT MODELENVIRONMENTAL EVALUATION
DUPONT - NEWPORTNEWPORT, DELAWARE
Woodward-Clyde ConsultantsConsulting Engineers. Geologists and Environmental Scientists
Job No.: 88C2076-+VDrawn by D.E.G.
Drawing No. 80763000Checked by:
N.T.S.
Dots: 0+/22/1992
FIGURE 12
Appendix A
SR3I5I77
Woodward-ClydeConsultants
APPENDIX A
PHASE II WETLANDS INVESTIGATIONDATA TABLES MARCH 1989
TABLE NUMBER
TABLE A-l WETLAND SURFACE WATER SAMPLESFIELD PARAMETERS
TABLE A-2 WETLAND SURFACE WATER SAMPLESTCL PARAMETER DETECTIONS
TABLE A-3 WETLAND SEDIMENT SAMPLESPHYSICAL ANALYSES AND ORGANIC CONTENT
TABLE A-4 WETLAND SEDIMENT SAMPLESTCL PARAMETER DETECTIONS
TABLE A-5 CHRISTINA RIVER SEDIMENT SAMPLESPHYSICAL ANALYSES AND ORGANIC CONTENT
TABLE A-6 CHRISTINA RIVER SEDIMENT SAMPLESTCL PARAMETER DETECTIONS
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Appendix B
AR3l5f86
Woodward-ClydeConsultants
APPENDIX B
PHASE III WETLANDS INVESTIGATIONDATA TABLES JUNE 1989
TABLE NUMBER
TABLE B-l CHRISTINA RIVER, WHITE CLAY CREEK, ANDNORTH AND SOUTH DISPOSAL SITEWETLAND SEDIMENT SAMPLESPHYSICAL PROPERTIES AND ORGANIC CONTENT
TABLE B-2 SUMMARY OF CHRISTINA RIVER AND WHITECLAY CREEK SEDIMENT CHEMICAL ANALYSES(mg/kg)
TABLE B-3 SUMMARY OF WETLAND SEDIMENT CHEMICALANALYSES (mg/kg)
TABLE B-4 COMPARISON OF PHASE II AND PHASE IIISEDIMENT CHEMISTRY DATA (mg/kg) FOR THECHRISTINA RIVER AND WETLAND STATIONS
TABLE B-5 SUMMARY OF SURVIVAL AND GROWTH DATAOF FATHEAD MINNOW LARVAE EXPOSED TOELUTRIATES FROM NORTH AND SOUTHDISPOSAL SITE WETLANDS, CHRISTINA RIVER,AND WHITE CLAY CREEK SEDIMENTS
TABLE B-6 DUNCANS MULTIPLE RANGE TEST FORSIGNIFICANT DIFFERENCES IN MEAN SURVIVALOF LARVAL FATHEAD MINNOW
TABLE B-7 DUNCANS MULTIPLE RANGE TEST FORSIGNIFICANT DIFFERENCES IN MEANGROWTH OF LARVAL FATHEAD MINNOW
TABLE B-8 PERCENT SURVIVAL OF WATER FLEASEXPOSED TO ELUTRIATES
88315187
Woodward-ClydeConsultants
LIST OF TABLES - CONTINUED
TABLE NUMBER
TABLE B-9 DUNCANS MULTIPLE RANGE TEST FORSIGNIFICANT DIFFERENCES IN MEANREPRODUCTION OF WATER FLEAS
TABLE B-10 SUMMARY OF (NON-FILTERED) WETLANDSURFACE WATER SAMPLE ANALYSES FORTOTAL METALS (ug/1)
TABLE B-ll SUMMARY OF (FILTERED) WETLANDSURFACE WATER SAMPLE ANALYSES FORDISSOLVED METALS (ug/1)
TABLE B-12 FIELD PARAMETERS FOR WETLANDSURFACE WATER SAMPLES
TABLE B-13 COMPARISON OF PHASE II AND PHASE HIFILTERED WETLAND SURFACE WATERSAMPLE ANALYSES FOR DISSOLVED METALS(ug/l)
TABLE B-14 COMPARISON OF PHASE II AND PHASE IENON-FILTERED WETLAND SURFACE WATERSAMPLE ANALYSES FOR TOTAL METALS(ug/l)
TABLE B-15 DENSITIES OF MACROINVERTEBRATES (INDIV/M2)COLLECTED IN THE CHRISTINA RIVER ANDWHITE CLAY CREEK
TABLE B-16 DENSITIES OF OLIGOCHAETA AND CHIRONOMIDAE(INDIV/M2) COLLECTED IN THE CHRISTINARIVER AND WHIT CLAY CREEK
TABLE B-17 DENSITIES OF MACROINVERTEBRATES(INDIV/M2) COLLECTED WETLANDS ADJACENTTO NORTH AND SOUTH DISPOSAL SITES
TABLE B-18 DENSITIES OF OLIGOCHAETA AND *CHIRONOMIDAE (INDIV/M2) COLLECTEDIN WETLANDS ADJACENT TO NORTH ANDSOUTH DISPOSAL SITES
ii-2
AR3I5I88
Woodward-ClydeConsultants
LIST OF TABLES - CONTINUED
TABLE NUMBER
TABLE B-19 MACROINVERTEBRATES COLLECTED AT NORTHWETLANDS STATION AS07
TABLE B-20 FISH COLLECTED FROM THE CHRISTINA RIVERAND WHITE CLAY CREEK FOR TISSUE ANALYSES
TABLE B-21 TISSUE ANALYSES (mg/kg) OF PUMPKINSEEDAND SILVERY MINNOW COLLECTED IN THECHRISTINA RIVER AND WHITE CLAY CREEK
TABLE B-22 TISSUE ANALYSES (mg/kg) OF WHITE PERCHCOLLECTED IN CHRISTINA RIVER ANDWHITE CLAY CREEK
TABLE B-23 TISSUE ANALYSES (mg/kg) OF BLACK CRAPPIECOLLECTED IN CHRISTINA RIVER AND WHITECLAY CREEK
TABLE B-24 TISSUE ANALYSES (mg/kg) OF BLUEGILLCOLLECTED IN CHRISTINA RIVER
TABLE B-25 TISSUE ANALYSES (mg/kg) OF WHITE SUCKER,YELLOW BULLHEAD, CARP (FILLETS), ANDWHITE CATFISH COLLECTED IN THE CHRISTINARIVER AND WHITE CLAY CREEK
TABLE B-26 DATA SUMMARY
ii-3
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TABLE B-2Summary of Christina River and White day Creek
Sediment Chemical Analyses (mg/kg)Du Pont-Newport Phase III Wetland Investigation
August 1989
Christina River
MetalAluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperkonLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
ThresholdValue
————33
————31——25——136
17000132——3000.820
. —— .——..————. ——760
RS0421900<25.74.21841.52.5...
227051.617.642.8
3080054.33360495
<0.26<18.4<1040<0.82<2.9<959<0.6760.8634
RS016200<15.1
1.582.60.63<i.a56716.66.78.6
115002022160227
<0.15<10.71020<0.48<1.7<561<0.3720.5267
RS0723400<20.98.3
29201.23.5
222071.6 •23.835.8338075.754001360<0.2127.91890<0.67.<2.4<7800.755.91010
RS1017900<19.2
4.11621.2
<1.7221036.013.611.8
2510010.64850744
<0.1718.91320<0.63<22<714<0.51412103
RS0637800<27.049.77441.56
271042525.177.0
4320052267008430.6938.42430<4.4<3.1
<1010<0.7176.52440
White ClayCreek
RS0826600<20.13.55831.0
<1.8272056
26.240.0
3810056.470609130.1929.94390<6.3<2.3<748<0.5171.5640
RS0918800<24.1
5.51390.59<2.1251042.414.618.3
2690021.65160702
<0.2124.8<969<0.77<2.7<897<0.6343.7193
dupwSO. xl*Notes: 1. < Represent* below Instrument Detection Level.
2.—— No ERA Threshold Value for this metal.3. Sediment* collected from 9-11 August 1989.4. Source of Threshold Value* USEPA (1985), except for iron and manganese,which are a* listed by the U.S. Army Corps of Engineers.
5. Sample locations shown on Figure 1.
flR3!5l9l
TABLE B-3Summary of Wetland Sediment Chemical Analyses (mg/kg)
Dti Pont - Newport Phase III Wetland InvestigationAugust 1989
North Disposal Site
MetalAluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagntsiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
ThresholdValue————33————31
——25——136
17000132——3000.820—————————760
AS 07773071.2117
45100.2865.7107032215.13070244002700013008807.549.1<601<2.49.6
<5560.637.9
15300
AS 1015800<32.46.9265
<0.453.6
199037.712.855.3
225001503150539
<0.32<23.1<1300<1.0<3.7
<1210<0.8244.6849
AS 1121500<29.711.85001.212.8281066.226.2157
3520039543205410.5136.9
<1200<0.95<3.4
<11101.0
72.22520
South Disposal She
AS 0123000<41.17.4
117001.8
71.3253046.525.7258
2880013804750548
<0.41<29.3<1660<13.1<4.7
<15301.2
47.56360
AS 0321000<26.321.0
347001.541.8160050.445.81040362004660376010300.9132.5
<1060<4.3<3.0<979<0.6549.4
11800
dupwSO.xtsNotes: 1. < Represent* below Instrument Detection Level.
2. —— No EPA Threshold Value for this metal.3. Sediment* collected from 9-11 August 1969.4. Source of Threshold Value* USEPA (1965), except for iron and manganese,which are aa listed by the U.S. Army Corpe of Engineer*.
5. Sample location* shown on Figure 1.
AR3I5I92
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TABLE B-5SUMMARY OF SURVIVAL AND GROWTH DATA OF FATHEAD
MINNOW LARVAE EXPOSED TO ELUTRIATES FROMNORTH AND SOUTH DISPOSAL SITE WETLANDS,
CHRISTINA RIVER, AND WHITE CLAY CREEK SEDIMENTSDU PONT-NEWPORT PHASE ffl WETLANDS INVESTIGATION
Saaple ID
Control
SandElutriate(SE01)
AS01
AS03
AS07
AS10
ASH
RS01
Rep.
1234
1234
1234
1234
1234
1234
1234
1234
AverageSurvival Survival(*) (*)
100 97.515.090100100
100 87.519.6908080
100 90.018.2809090
80 85.0+12.97010090
0 ——000
80 90.018.21009090
90 92.515.01009090
100 87.519.6809080
AverageDry Wt.(»9)
0.500.790.570.65
0.630.690.500.56
0.440.630.740.64
0.580.970.630.50
....
....
....
0.760.560.610.58
0.500.490.700.63
0.650.910.680.63
MeanDry Wi(n?)
0.628tO
0.59510
0.613+0
0.670*0
....
0.63310
0.58010
0.71810
b.
.124
.082
.125
.207
.086
.102
.130
TABLE B-5 (CONTINUED)
Sample ID
RS04
RS06
RS07
RS08
RS09
RS10
Reo.1234
1234
1234
1234
1234
1234
Survivalm100706060
70809090
100709080
90709080
908060100
80608030
AverageSurvival
(%)72.5118.9
82.519.6
85.0112.9
82.519.6
82.5113.5
62.5123.6
AverageDry It.(ma)0.700.600.570.68
0.970.500.690.54
0.530.360.530.43
0.530.630.630.68
0.710.690.400.69
0.480.570.530.47
MeanDry Wt.(BO)
0.63810.054
0.675+0.213
0.46.310.083
0.61810.063
0.623+0.149
0.51310.047
AR3I5I95
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s iAR3I5I96
TABLE B-8PERCENT SURVIVAL OF WATER FLEAS EXPOSED TO ELUTRIATES
DU PONT-NEWPORT PHASE III WETLAND INVESTIGATIONAUGUST 1969
LOCATION PERCENT SURVIVAL
CHRISTINA RIVERRS04 100RS01 90RS07 0RS10 100RS06 100RS08 100
WHITE CLAY CREEKRS09 100
NORTH DISPOSAL SITEAS07 0AS10 100AS11 60
SOUTH DISPOSAL SITEAS01 80AS03 80
CONTROL 80
Notes: 1. Percent survival based on the number of individuals that survivedcontinual exposure to elutriate over the seven day test period.Each test was conducted using ten organisms.
fleasurv.xls
AR3I5I97
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AR3I5I98
TABLE B-10Summary of (Non • Filtered) Wetland Surface Water Sample Analyses for Total Metals (ug/1)
Du Pont - Newport Plase 111 Wetland InvestigationAugust 1989
USEPA Water Quality
MetalAluminumAntimonyArsenic (4)BariumBerylliumCadmiumCalciumChromium +CobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
CriteriaAcute7509000360——1303.9——16
——18
——82
————2.4
1800——204.1
———
1400——120
(3)Chronic
87160048
——5.31.1——
11——12
10003.2————0.01296——5
0.12——40——110
NORTH DISPOSAL SfTE
AW 0540.0
<50.2<2.2189
<0.70•5.6
39200<6.25.09.5420
•15.7199001890<0.20<35.8<2020<1.6<5.741800<1.35.1
•262
AW 0950.6
<50.23.2382
<0.70<4.431000<6.24.3
<7.2•2820•17.698801360<0.20<35.8<2020<3.2<5.720100<1.33.9104
SOLTTH DISPOSAL SrtE
AW 0185.3
<50.22.3
13501.3
<4.423500<6.24.5
<7.2•2030•6.769004030<0.20<35.86160<35<5.75670<1.33.7
•217,
AW 0334
<50.2<2.2610
<0.70<4.425700<6.28.1
<7.2•4620•4.2
120003110<0.20<35.84470<1.6<5.716200<1.33.981.1
dupw20.xltNotes: 1. < Represents below Instrument Detection Level.
2. — No USEPA criteria for this metal.3. Criteria from USEPA Quality Criteria for Water, 1986; Update. 1987 (Criteria for the Protection of Freshwater Aquatic LJfe).4. Arsenic Values; Acute value for Arsenic +3, Chronic value for Arsenic +5.5. • - denotes criteria exceedences.6. Samples sent by WCC to CompuChem.
flR3i5i99
TABLE B-llSummary of (Filtered) Wetland Surface Water Sample Analyses for Dissolved Metals (ug/I)
Du Port - Newport Phase III Wetland InvestigationAugust 1989
USEPA Water Quality
MetalAluminumAntimonyArsenic (4)BariumBerylliumCadmiumCalciumChromium +6CobaltCopperIronLeadMagnesiumM»ng»n«»tMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
CriteriaAcute75090003&':—1CO3.9——16
——18
——82——
2.41800——204.1——1400
120
(3)Chronic
87160048——5.31.1——
11——12
10003.2————0.01296——5
0.12——40
110
NORTH DISPOSAL SITE
AW 05<23.0<50.2<22209
<0.70<4.440200<6.25.3
<7.248.0•6.4
204001830<0.20<35.8<2020<8.0<5.743500<1.34.3
•115
AW 09<23.0<50.2<2.2393
<0.70<4.4
31100<6.24.4
<7.2•12702.4
99601290<0.20<35.82120<8.0<5.721300<1.3q AO.
72.0
SOUTH DISPOSAL SrTE
AW 0125.7
<50.2<2.213202.6
<4.423900<6.28.2<72716
<1.170904080<0.20<35.86740<8.0<5.77070<1.3e 4O.I
57.3
AW 0349
<50.2<2.2848
<0.70<4.425700<&Z6.9
•28.6*1120
2.8120002920<0.20<35.85020<1.6<5.718400<1.33.8
82.5
dupw10.xlsNous: 1. < Represent betow Instrument Detection Limit
2. ——No USEPA criteria for this metal.3. Criteria from USEPA Quality Criteria for Water, 1986; Updated 1987 (Criteria for the Protection of Freshwater Life).4. Arsenic Values; Acute value for Arsenic +3, Chronic value for Arsenic +5.5. • • Denotes criteria exceedences.6. Samples sent by WCC to CompuChom.
A-R3I5200
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M1 O5 "&
CO Ir" J
fi?§=•«8 E3 ""• n~|fo czL
F
io
i
o
mO)
CO
mCO
CM
oIN
inS30SiSCD
1
1
1
O O O
CM O) CM
CM U) CM
co m mI I I^ w 52
i i iCO CM rrCO CD CO
•"-. q qCO O) COCM -r- CM
°53 S CO
CO O O>CM co inN CD CO
m o o8 8 8
CO QQ CO
i i i
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is.alCO
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ill
TABLE B-13Comparison of Phase II and Phase 111 Filtered Wetland Surface
Water Sampte Analyses for Dissolved Metals (ug/Q.Du Font-Newport Phase III Wetland Investigation
NORTH DISPOSAL SFTE
USEPA Water Quality AW OS
SOUTH DISPOSAL SrTE
AW 01 AW 03Crharia (3)
MetalsAluminumAntimonyArsenic (4)BariumBerylliumCadmiumCalciumChromium +6CobaltCopperIronLeadMagnesiumManganese »•MercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Acute7509000360——1303.9——16
——18
——82————2.4
1800——204.1——1400___120
Chronic87
160048——5.31.1——
11—— .12
10003.2————0.01296
——5
0.12——40
——— _
110
Phase II<45<281.9224<1.0<3.039700<3.1<3.35.035
*7.9200001300*0.8<341900<2.5<2.252200<4.1<6.5107
Phase III<23.0<50.2<2.2209
<0.70<4.440200<6.25.3
<7.248.0•6.4
204001830<0.20<35.8<2020<8.0<5.743500<1.34.3
•115
Phase II<45<2&1.5766-;1.03.5
25400<3.1<3.3<2.284
<1.010800837<0.2<341050<2.5<229410<4.1<6.524
Phase III25.7<50.2<2.213202.6
<4.423900<6.2as.<72716<1.170904080<0.20<35.86740<8.0<5.77070<1.3
6.1-57.3
Phase II<45<281.5596<1.0<3.524500<3.1<3.37.679
*4.413800455<0.2<345080<2.5<2.227000<4.1<6.581.1
Phase III49.0
<50.2<2.2848
<0.70<4.425700<6.26.9
•28.6*11202.8
120002920<0.20
4m<iT<5.718400<1.33.882.5
Note*: 1. < Represents below Instrument Detection Limit2. —— No USEPA criteria for thi« metal. duph2o.xls3. Criteria from USEPA Quality Criteria for Water, 1986; Updated 1987 (Criteria for the Protection of Freshwater Ufe).4. Arsenic Values; Acute value for Arsenic +3, Chronic value for Arsenic +5.5. * - Denotes criteria exceedences.6. Phase II analyzed by ETC, Phase III analyzed by CompuChem.
3R3J5202
TABLE B-14Comparison of Phase II and Phase III Non-Fttered Wetland Surface
Water Sample Analyses for Total Metals (ug/I)Du Font-Newport Phase III Wetland Investigation
NORTH DISPOSAL SITEUSEPA Water Quality
Criteria (3)Metal Acute ChronicAluminumAntimonyArsenic (4)BariumBerylliumCadmiumCalciumChromium +6CobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
7509000360
• ——1303.9——16
——18
——62.
— —— —2.4
1800——204.1——1400——120
87160048——5.31.1——
11——12
10003.2————0.01296——5
0.12——40
——110
AW 05Phase II
47<280.9220<1.0<3.540000<3.15.0
*14.0534•89
200001350<0.2<341830<25<2.249000<4.1<6.5108
Phase III40.0
<50.2<Z2189
<0.70•5.6
39200<6.25.09.5420
•15.7199001890
.<0.20<35.8<2020<i.e<5.741800<1.35.1*262
SOLTTH DISPOSAL SFTE
AW 01Phase II
78<28<0.8940<1.0<3.525400<3.1<3.33.6904*7
10400964<0.2<341120<2.5•3.28540<4.1<6.543
Phase III85.3<50.22.3
13501.3
<4.423500<6£4.5<72•2030*6.769004030<0.20<35.86160<3.2<5.75670<1.33.7
•217
AW 03Phase II•485<281.3
1040<1.0<3.523400<3.1<3.3•22.0*3120*12613100946<0.2<344810<2.5<2.224800<4.1<6.5•201
Phase III34.0
<50.2<2.2610
<0.70<4.425700<6.28.1
<7.2•4620"4.2
120003110<0.20<35.84470<1.6<5.716200<1.33.981.1
h2oph2&3.xlsNotes: 1. < Represents below Instrument Detection Level.
2. —No USEPA criteria for this metal.3. Criteria from USEPA Quality Criteria for Water, 1966; Update,1967(Criteria for the Protection of Freshwater Aquatic Life)4. Arsenic Values; Acute value for Arsenic +3, Chronic value for Arsenic +5.5. * - denotes criteria exceedences.6. Phase II analyzed by ETC, Phase III analyzed by CompuChem.
flf?3/5203
TABLE B-15DENSITIES OF MACRCINVERTEBRATES 0NDIV/M2) COLLECTED
IN THE CHRISTINA RIVER AND WHPTE CLAY CREEKDU PONT- NEWPORT PHASE III WETLANDS INVESTIGATION
August 1989
TAXONCOELENTERATA
HydridaeHydra sp.
UIRBELLARIANEMATODAANNELIDAOligochaeta.EnchytraaidaoNaididaoTubrficidae
CRUSTACEAUopodaAnthuridatCyathura polite
AmphipodaGammaridaeGammarvs sp. "
HaustoriidaeINSECTADipteraChironomldaa
MsgalopteraSiallda*Stalls sp.
MOLLUSCAGastropodaPel«cypod«Sphaeriidae
TOTAL TAXA/STATION (3)TOTAL NO. 1NDIV/M2
CHRISTINA RIVERRS04 RS03-A RS01 RS07 RS06 RS08
294343 14 29 43 29
4329 101 14.
8314 6206 1562 2293 3797 2823
115 29 14
14 86 502 14 24414
t
2441749 502 115 143 358 344
14
14 29
13 11 8 12 12 1110163 6880 2279 2695 4241 3698
WHrTE CLAY CREEKRS09
43
2221
29
516
14
102823
Notei: 1. DensttiMbAMd on m««n numb«r of individual* in thr«« replicate b»nthie2.xltpetit* ponar t«mpl«« (wunpling area 36 «q In) per station.
2, Chritb'n* Rh/«r ctation* ll«t*d in order from upstream to downstream.3. Total taxa/statlon includes Individual Oli()ochaeta and Chironomidae species which are not enumerated on this table.
TABLE B-16DENSITIES OF OUGOCHAETA AND CHIRONOMIDAE ONDIV/M2) COLLECTED
IN THE CHRISTINA RIVER AND WHITE CLAY CREEKDU PONT- NEWPORT PHASE III WETLANDS INVESTIGATION
August 1989
TAXON
ANNELIDAOligochaetaEnchytraeidoeNaididaePristinella longidentataSpecaria josinaeTubificidaeAulodrilus limnobiusAulodrilus piguetiAulodrilus plurisetallyodrilus templetoniLJmnodrilus cervixUmnodrilus hoffmeisteriLJmnodrilus sp.Quistadrilus multisotosusBranchiura sowerbyi
Unid. TubificidaeINSECTADipteraChironomidaeProcladius (Holotanypus) sp.Chironomus sp.Cryptochironomus sp.Polypedilum sp.Tanytarsus sp.
RS04
90072
144
93610836
6408
6481081442556
RS03-A
36
*
25236
512108
5400
36
36324
CHRISTINA RIVERRS01 RS07
10872
36 1087236
396
1441440 1296
.
36
36144
RS06 RS08
*
216 72108
36 '
36900 324
3636 1083096 2952
3672108 144432 288
WHITE CLAY CREEKRS09
180
72*
2232
18072
10836
Notes: 1. Densities based on total number of individuate in one replicate o&criver.xlspetite ponar sample (sampling area 36 sq in) per station.
2. Christina River stations listed in order from upstream to downstream.3. * Indicates present at station, not enumerated on specific level.
W31S205
TABLE B-17DENSmES OF IMACROINVERTEBRATES (INDIV/M2) COLLECTED
IN WETLANDS ADJACENT TO NORTH AND SOUTH DISPOSAL SITESDU PONT - NEWPORT PHASE III WETLANDS INVESTIGATION
August 1969
North Disposal SH« South Disposal Sit*TAXON_____________________AS10 AS11__________AS01 AS03TURBELLARIA 14 57NEMERTEA 14NEMATODA 29 43 416NEMATOMORPHA 29ANNELIDAOllgoehaataNaidlda* 37S 5977 272TubHlcidae 4459 13516 788 353
HirudinaaQloasiphonlida*Htlobdtll* stttntlis 14Bttrtcobdillt phtlart 14
CRUSTACEAAmphipodaGammarida*GavnmavK* «p. 29 401 14
hopodsAtallida*Astllus commun/s ' 14
HYDRACARINA 43INSECTA
Oipttra 14Chironomlda* 946 487 10392 1018Tipulida*Tipulttp. 14Haxiromttp. 14ArrthomyildaaUmnophor* tp. 72Culicida* 14Ceratopogonida* 57 14Ptlpomyit tibtolit 745 43Prabezzit tp. . 1032Culico/dtt tp. 559Chaoborida*Chtobona tp. 29 29
EphamiroptaraSiphtonuridMSiphlontavi tp. 29
OdonataCotnagrienldauArgit tp. 980Ub«llulida* 72Eiythemittp. 903
CoteopttraHydrophHidMHydrophitut tp. 14NotarkfewHycfroeantnutip. 100
29
NMMMC**P. 129MOU.U8CAQaatrepodaPtanocbida*H»U*om» »nc»pt 14PhytidM
14
____________________________72____________________TOTAL TAXA TATION (2) 19 27 20 13
_____TOTAL NO. INOV/M2_____5864 1478ft________22248 1791banthleljda
NotM: 1. OcnaitiM bM*d on maan number of Individuaia in three rtplicalepatt* pcnar aample* (sampling are* 36 *q in) per station.
2. Total tixa/atation include* individual OHgocttaeta and Chlronomida*apeeien which are not enumented on thie table.
flR3!5206
TABLE B-18DENSmES OF OUGOCHAETA AND CHIRONOMIDAE (INDIV/M2) COLLECTED
IN WETLANDS ADJACENT TO NORTH AND SOUTH DISPOSAL SITESDU PONT - NEWPORT PHASE III WETLANDS INVESTIGATION
August 1989
TAXONANNELIDAOligochaetaNaididaeDero digitate
TubifieidaeAulodrilus limnobiusAulodrilus piguetiAulodrilus plurisetellyodrilus templetoniUmnodrilus cervixUmnodrilus clap.-cev. comp.Umnodrilus hoffmeisteriUmnodrilus sp.Quistadrilus multisetosusBranchiura sowerbyi
Unid. TubifieidaeINSECTADipteraChironomidaeProcladius (Holotanypus) sp.Tanypus sp.Conchape/opia/Thienemannimyia gr. sp.Ablabesmyia sp.Chironomus sp.Cryptochironomus sp.Polypedilum sp.Tanytarsus sp.Psectrotanypus sp.
North Disposal SiteAS10 AS11
253
14418036
363628836361083276
64836
36072144
288
252180362484367925768064
75636
324144108
South Disposal SiteAS01 AS03
1836 324
36
36180
363672
10080900
33121044 36
72
o&cwetxlsNotes: 1. Densities based on total number of individuals in on* replicate
petite ponar sample (sampling area 36 sq in) per station.
SR3I5207
TABLE B-19MACROINVERTEBRATES COLLECTED AT NORTH WETLANDS STATION AS07
DU FONT-NEWPORT PHASE III WETLANDS INVESTIGATIONDECEMBER 1989
TAXQN________________________________INDIV/M2
ANNELIDATubificidae 111Limnodrilus hoffmeisteri 14
HYDRACARINA 14
INSECTADiptera 14Ceratopogonidae 14Palpomyia sp. 29ChironomidaeProcladius sp. 201Chironomus sp. 29
TOTAL TAXATOTAL NO. INDIV/M2
8416
benthic3.xlsNotes: Densities based on mean number of individuals in three replicate petite ponar
samples (sampling area 36 in. sq.) per station.
TABLE B-20Fish Collected from the Christina River and White Clay Creek for Tissue Analyses
Du Font-Newport Phase III Wetland InvestigationAugust 1989
Species
black crappie
bluegill
carp (fillets only)
pumpkinseed
silvery minnow
white catfish
white perch
white sucker
yellow bullhead
RS048/9/89 8/10/89
2(152) 3(128)2(160) 2(132)
3(107) 1(70)1(88)
2(63)
5(61)
3(271) 1(160)
1(282)
1(128)
CHRISTINA RIVER WHITE CLAY CREEK
Site VicinityTidepool North Site Bridges RS08 RS098/10/89 8/11/89 8/10/89 8/9/89 8/11/89 8/9/89 8/10/89
1(60) 1(69) 1(158)
1(40)
1(154) 1(550)
4(78) 7(159)
14(50) 12(30) NA 5(60)
1(284)
3(297) 3(69) 4(134) 5(187) 6(211)
1(134)
al(fish.xl«Notes: Values are total number of individual* and approximate weight (in parenthesis) in grams.
Each entry represents one analysis.NA means not analyized.
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TABLE B-24Tissue Analyses (mg/kg) of Bluegffl CoOected in Christina River
Ou Font-Newport Phase III Wetlands InvestigationAugust 1969
CHRISTINA RIVERMetalAluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Reference Value (mg/kg)
0.05-1.69(1)
0,01-0.35 (1)
•cO.1-0.8 (2)
0.25-24.10 (1)
0.01-1.94 (1)
< 0.05-0.8 (2)
0.09-2.47 (1)
8.82-1092 (1)
140.3
<0.54.0
<0.10.12
117000.1
<0.51.1
32.40.135920.40.070.2
25700.48<0.1954
<0.1<0.516.3
RS044
0.1<0.53
<0.10.09
161000.1
<0.51.3
11.7<0.136925.70.10.2
21000.64<0.1877
<0.1<0.513.7
4<0.1<0.53.7
<0.10.06129000.4
<0.50.61620.135711.30.020.1
22200.310.1685
<0.1<0.515.8
RS0870
<0.1<0.55.5
<0.10.0689000.1
<0.50.9
82.90232424.70.020.2
20300.49<0.1782
<0.10.719.9
Notes: (1) LoweJ.P., et al (1985). fish4.xls(2) Eisler.R. (1986,1987).< Represents Below Instrument Detection Limit
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AR3I52I5
Appendix C
AR3I52I6
Woodward-ClydeConsultants
APPENDIX C
SUPPLEMENTAL PHASE III WETLANDS INVESTIGATIONDATA TABLES MAY 1991
TABLE NUMBER
TABLE C-l SAMPLING PLAN FOR SUPPLEMENTAL PHASE IIIWETLANDS INVESTIGATION
TABLE C-2 SUMMARY OF ANALYTICAL RESULTS FORTOTAL METALS (ug/1) IN NON-FILTEREDSURFACE WATER NORTH DISPOSAL SITE
TABLE C-3 SUMMARY OF ANALYTICAL RESULTS FORDISSOLVED METALS (ug/1) IN FILTEREDSURFACE WATER NORTH DISPOSAL SITE
TABLE C-4 SUMMARY OF ANALYTICAL RESULTS FORTOTAL METALS (ug/1) IN NON-FILTEREDSURFACE WATER SOUTH DISPOSAL SITE
TABLE C-5 CHRISTINA RIVER, AND NORTH AND SOUTHDISPOSAL SITE WETLAND SEDIMENTSAMPLES PHYSICAL PROPERTIES ANDORGANIC CONTENT
TABLE C-6 SUMMARY OF CHRISTINA RIVER SEDIMENTCHEMICAL ANALYSES (mg/kg dry wt.)
TABLE C-l SUMMARY OF NORTH DISPOSAL SITESEDIMENT CHEMICAL ANALYSES(mg/kg dry wt.)
TABLE C-8 SUMMARY OF SOUTH DISPOSAL SITESEDIMENT CHEMICAL ANALYSES(mg/kg dry wt.)
SR3I52I7
Woodward-ClydeConsultants
LIST OF TABLES - CONTINUED
TABLE NUMBER
TABLE C-9 SUMMARY OF ANALYTICAL RESULTS FORTOTAL METALS (ug/1) IN AMORPHOUSIRON EXTRACTS
TABLE C-10 SUMMARY OF SURVIVAL DATA FORCHIRONOMUS TENTANS EXPOSED FOR12 DAYS TO CHRISTINA RIVER, NORTHAND SOUTH DISPOSAL SITE WETLANDSEDIMENTS
TABLE C-ll SUMMARY OF WEIGHT DATA FOR CHIRONOMUSTENTANS EXPOSED FOR 12 DAYS TOCHRISTINA RIVER, NORTH AND SOUTHDISPOSAL SITE WETLAND SEDIMENTS
TABLE C-12 DUNCANS MULTIPLE RANGE TEST FORSIGNIFICANT DIFFERENCES IN MEANSURVIVAL OF CHIRONOMUS TENTANSLARVAE
TABLE C-13 DUNCANS MULTIPLE RANGE TEST FORSIGNIFICANT DIFFERENCES IN MEANGROWTH OF CHIRONOMUS TENTANS LARVAE
TABLE C-14 SUMMARY OF SURVIVAL DATA FORHYALELLA AZTECA EXPOSED FOR 28 DAYSTO CHRISTINA RIVER, NORTH AND SOUTHDISPOSAL SITE WETLAND SEDIMENTS
TABLE C-15 SUMMARY OF WEIGHT DATA FOR HYALELLAAZTECA EXPOSED FOR 28 DAYS TOCHRISTINA RIVER, NORTH AND SOUTHDISPOSAL SITE WETLAND SEDIMENTS
TABLE C-16 SUMMARY OF LENGTH DATA FOR HYALELLAAZTECA EXPOSED FOR 28 DAYS TOCHRISTINA RIVER, NORTH AND SOUTHDISPOSAL SITE WETLAND SEDIMENTS
ii-2
^3/5218
Woodward-ClydeConsultants
LIST OF TABLES (CONTINUED)
TABLE NUMBER
TABLE C-17 DENSITIES OF MACROINVERTEBRATES(NO./m. sq.) COLLECTED IN THECHRISTINA RIVER AND WETLANDSADJACENT TO THE NORTH DISPOSAL SITE
TABLE C-18 SUMMARY TABLE OF BENTHIC FIELD EFFORT
TABLE C-19 TOTAL NUMBER OF FISH COLLECTED FROM THECHRISTINA RIVER IN THE VICINITY OF THEDU FONT-NEWPORT PLANT AND AT THEFIELD REFERENCE STATION, RS15
TABLE C-20 SUMMARY OF RESULTS OF TISSUE ANALYSES(mg/kg, wet wt.) OF FISH FILLETSCOLLECTED IN THE CHRISTINA RIVER
TABLE C-21 TAL METALS ANALYSES (mg/kg, dry wt.) OFROOT, RHIZOME, AND LEAF TISSUE OFNUPHARSP. COLLECTED AT THE SOUTHDISPOSAL SITE AND FIELD REFERENCESTATION (RS15)
TABLE C-22 TAL METAL CONCENTRATIONS (mg/kg dry weight)IN SURFICIAL SEDIMENT,' AND ROOT, RHIZOMEAND LEAF TISSUE OF NUPHAR SP. COLLECTED ATTHE SOUTH DISPOSAL SITE AND FIELDREFERENCE STATION
TABLE C-23 DATA SUMMARY
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TABLE C-2Summary of Analytical Results for Total Metals (ug/l) in Non-Filtered Surface Water
North Disposal SiteDuPont-Newport Supplemental Phase III Wetlands Investigation
October 1990
Water Quality Parameters (mg/L)Alkalinity (as CaCOS)ChlorideTotal Phosphorous (as P)SulfataTotal Suspended SolidsDissolved Organic CarbonIron 00Iron (110
Metals (ug/L)AluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Silica as SiO2
USEPA Water QualityCriteria
Acute Chronic————————
7509000360——1303.9——16——18
82————2.41400——2804.1——1400
120
——
————————————————
87160048——5.31.1—11—1210003.2————0.012160——360.12. ——40
110
——
Stations
AS1257.017.10.05869.6<5.022
0.077<0.040
191 B35.6 B<2.0118 B
<3.03380011.5<5.0<6.01888.3
2320 B35.7<0.2<10.04500 B2.7 B
<4.023200<3.014.0 B86.8
10700
AS09167279
0.06264.822.035
0.732.9
54557.3 B7.4 B704
mm43500<4.0110
3170$:'t£:$fe;';'rJHteiriVSWi'SvWv; •:--:•:•:•:
796004890<0.229.2 B6640<2.0<4.060100<3.0<5.0
16200
RS1363.063.7
' 0.1128.629.021
0.0670.64
689<26.0<2.075.3 B
<3.022900<4.0<5.0<6.01250L5
11300174<0.2<10.05270<2.0<4.034500<3.06.3 B
::::::;:x.jj:::::::::xl-;::
9540
RS1477.075.10.1334.337.026
0.231.4
<26.02.2 B143 B
<3.025200<4.0<5.0<6.0233022.7
16600660<0.2<10.05040<2.0<4.035800<3.0<5.0
16000
Notes: 1. < Represents below Instrument Detection Limit.2. — No USEPA criteria for this metal.3. Criteria from USEPA Quality Criteria for Water. 1986; Updated 1987 (Criteria for the Protection of Freshwater Life).4. Arsenic Values; Acute value for Arsenic +3. Chronic value for Arsenic +5.5. B = Reported value is less than Contract Required Detection Limit (CRDL). but greater than the
Instrument Detection Limit (IDL).6. Underlined values exceed chronic criteria.
Shaded values exceed acute criteria. "NorfoiSP,flf?3/522iNortoi«r«ir~ •
TABLE C-3Summary of Analytical Results for Dissolved Metals (ug/l) In Filtered Surface Water
North Disposal SiteDuPont-Newport Supplemental Phase III Wetlands Investigation
October 1990
Water Quality Parameters (mg/L)Alkalinity (as C«CO3)ChlorideTotal Phosphorous (as P)SuHataTotal Suspended SolidsDissolved Organic CarbonIron (IDIron (III)
Metals (ug/L)AluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Silica as Si02
USEPA Water QualityCriteria
Acute Chronic————————
7509000360——1303.9——16——
18——82——
——2.41400——2804.1——1400__
120
—
————————
87160048——5.31.1——11——
1210003.2————0.012160——360.12——40__
110
——
Stations
AS1257.617.3
<0.05069.7<5.0—
0.030 «<0.040
140 B<26.02.2 B222<1.0<3.03690013.0<5.016.3 B1563.5 B
2570 B39.5<0.210.1 B4990 B2.4 B
<4.026700<3.012.4 B
10800
AS09167267
<0.05064.3<5.0——
0.021 e<0.040
62.6 B32.9 B• 4.2 B717<1.0
46900<4.01226.8 B4363.2 B
764005420<0.232.3 B6370<2.0<4.065100<3.0<5.0am14600
RS1362.763.5
<0.05028.9<5.0——
<0.010<0.040
59.8 B<26.0<2.077.7 B<1.0<3.024000<4.0<5.0<6.0115<2.011700104<0.2<10.05430<2.0<4.035900<3.0<5,091.3
6370
RS1469.477.2
<0.05033.8<5.0—
<0.0100.12 e
82.0 B<26.02.0 B196 B<1.0<3.026600<4.0<5.0<6.04843.6 B
17600659<0.216.2 B4530 B<2.0<4.038500<3.0<5.0
11200
Notes: 1. < Represents below Instrument Detection Limit.2. —— No USEPA criteria for this metal.3, Criteria from USEPA Quality Criteria for Water, 1986; Updated 1987 (Criteria for the Protection of Freshwater Life).4, Arsenic Values; Acute value for Arsenic +3, Chronic value for Arsenic +5.5 e i estimated result less than 5 times detection limit (0.010 mg/l for Fe+2,0.040 mg/l for Fe+3).
8 «• Reported value is less than Contract Required Detection Limit (CRDL), but greater than theInstrument Detection Limit (IDL).
6, Underlined values equal or exceed chronic criteria.Shaded values exceed acute criteria,
TABLE C-4Summary of Analytical Result* for Total Metals (ug/l) in Non-Filtered Surface Water
South Disposal SiteDuPont-Newport Supplemental Phase III Wetlands Investigation
October 1990
Water Quality Parameters (mg/L)Alkalinity (as CaCC-3)ChlorideTotal Phosphorous (as P)SulfateTotal Suspended SolidsDissolved Organic CarbonIron (II)Iron (III)
Metals (ug/L)AluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Silica as SiO2
USEPA Water QualityAcute Chronic———————•™ ••
7509000360—1303.9—16—18—82——2.4
1400——2804.1——
1400——120
—
———————~~"
87160048—5.31.1—11—12
10003.2——
0.012160—36
0.12——40——110
—
StationsAS0358.839.20.145.2
19.027——
94.2 B<26.0<2.01080<1.0<3.016200<4.0<5.07.8 B
506032.785401560<0.2
<10.02090 B<2.0<4.0
21100<3.0<5.0
9210
AS0523640.90.95<5.052076——
<26.0<2.01570<1.0
!!Hlllt||E|B61900
15.25.1 B
5280056.8
243002300<0,2
<10.07320<2.0<4.025800
<3.015.5 B
43400
Notes: 1. < Represents below Instrument Detection Limit2. — No USEPA criteria for this metal.3. Criteria from USEPA Quality Criteria for Water, 1986; Updated 1987 (Criteria for the Protection of Freshwater Life).4. Arsenic Values; Acute value for Arsenic +3, Chronic value for Arsenic +5.5. B = Reported value is less than Contract Required Detection Limit (CRDL), but greater than the
Instrument Detection Limit (IDL).6. Underlined values exceed chronic criteria.
Shaded values exceed chronic criteria. a »>\ ^ , __ southiot >it
4*315223
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TABLE C-8Summary of South Disposal Site Sediment Chemical Analyses (mg/kg dry wt.)
Du Font-Newport Supplemental Phase III Wetlands InvestigationOctober 1990
Physical Parameters% fines (silt & clay)% moisture contentspecific gravityPH
Metals (mg/kg)AluminumAntimonyArsenicBariumBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Chemical ParametersAmorphous Iron (mg/kg) Rep. 1
Rep. 2Total Organic Carbon (ppm)% Combustible Organics
ThresholdValue 0-6'— 97— 219—— 2.57—— 7.0
— 18700— <14.533 6.5—— 14300— 1.2 B31— 2280 B25— 12.8 B136 iiiii wi17000
132— 4690
?::#::&&?:•$•.::*>.
3°°0.8 0.4
Z$-:*:-&*?Xi$&,20— 1600 B— 1.7 B— <2.2— 206 B— <1.7— 47.7
::W:>>>:£::WfiW:t:eo inim
— 15000— 15300— 4800—— 8.10
AS016-12-————————
28300<11.56.5
27901.8 B6.1
3050
17.6 B39.4
6250
<0.2
2170 B0.92 B<1.8306 B<1.463.9409
———• — —
AS0312-18'————
24400<11.8
7.140501.5 B6.62890
14.5 B45.2
6980
<0.2
25001.1 B
<1.8381 B<1.457.2490
——————— —
(W90
120.82.966.9
17000<24.320.0
250001.0 B
wiliii1550 B
%w;¥ft-;¥5vM$K*?
15.4 Bflllltlip:
lll!§p|oj3620 B
0.713!ifi;B«iiiB
1250 B2.3 B
<3.7172 B<1.450.6
:-:-:-:-:-:->;-x-:-;-:-:-:-:-M
——
340006.77
6-12"————
19700<7.912.7
111001.3 B7.8
1490 B•:-:-:«*M-wx':":-:*HPiSMi:V::;"S*ft¥:*M*:*&
19.5 .128
5220«f8s8|p*K&Mi8Mi*x:
0.2iJipSSSWSSS:v:;:::::::*:*:*:-:;:::
16800.74 B<1.2184 B
<0.9349.6
ftSW?ffi»X;:,;X:IV'M'XAJAIV<mm£m
————
AS050-6'90
242.32.516.8
23600<19.513.5
219001.8 B
:¥W?S¥Sa»¥S
4190
24.0 B;>¥;M *«-K 5
lilitll4780
0.6•XWMvSWWWM'
1740 B1.8 B
<3.0251 B<2.385.5
•:•:•:•:•:•:•:•:•••:<•-••••••"•>'S;'*31M6v;.:':.:fcSx!?S:
———
———
4300013.80
6-121————
19700<10.510.3
180001.7 B
2280
21.4iifiijiiiiiiiiiii
4070IxjiijiKii'ivSJsSi!
0.3SSWWSjir
1370 B1.0 B
<1.6249 B<1.357.7
——————— ~
Notes: 1. < Represents below Instrument Detection Limit.2. — No EPA Threshold Value for this metal/not sampled3. Source of Threshold Values USEPA (1985), except for iron and manganese, which are as listed by USACOE.4. B = Reported value is less than Contract Required Detection Limit (CRDL), but greater than the Instrument Detection Limit (IDL).5. Shaded values exceed EPA Threshold Values.
Bold values exceed reference station (RS15) values.SocrtfHH xte
^315227
TABLE C-9Summary of Analytical Results for Total Metals (ug/l) in Amorphous Iron Extracts
DuPont-Newport Supplemental Phase III Wetlands InvestigationOctober 1990
Metals (ug/l)AluminumAntimonyArsenicB*r!umBerylliumCadmiumCalciumChromiumCobaltCopperIronLeadMagnesiumManganeseMercuryNickelPotassiumSeleniumSilverSodiumThalliumVanadiumZinc
Christina RiverRS1512000<26.054.36583.4 B7.5
542047831.7 B155
479003963070 B2690<0,2233 E .935 B
<10.06.9 B674 B<3.089.31250
North Disposal SiteRS0713500<26.09.7 B6133.3 B4.9 B
832084041 .6 B139
47600248553021500.3736 E
1610 B<2.010.21460 B
<15.098.6467
AS126110<26.07.6
48801.5 B
14.2676072.112.5 B370
2170032801950 B862<0.229.2 B,E<830<2.0<4.0821 B<3.068.61530
AS071060019022896602.3 B1807460102051.4854048400933003530 B17700<0.280.8 E<83011.0 B10.1779 B
<3.0148
42200
South Disposal SiteAS0114900<26.019.4
337004.4 B266932057.236.8 B714
58500683056702320<0.268.4 E1150 B<2.0<4.01110 B<3.0118
21800
Notes: 1. < Represents below Instrument Detection Limit2, B — Reported value i* less than Contract Required Detection Limit (CRDL), but greater than the
Instrument Detection Limit (IDL).E - Reported value is an estimate.
3. Extraction followed methodology presented in Chao and Zhou (1983).
FeWiiei »
TABLE C-10Summary of Survival Data for Chlronomus tentans Exposed for 12 days to
Christina River, North and South Disposal Site Wetland SedimentsDuPont-Newport Supplemental Phase III Wetlands Investigation
_____________________October 1990___________________________
Avg. CriticalStation Replicate (1) Survival (%) Survival (%) t-value (2) t-value (3)
A 70RS15 B 90 85.0 —— —
C 100D 80
A 100AS03 B 40 82.5 0.16 2.016
C 90D 100
A 80AS05 B 80 75.0 1.41 2.016
C 70D 70
A 60AS06 B 90 82.5 0.23 1.944
C 100D 80
A 60AS07 B 50 40.0 4.02* 1.944
C 20D 30
A 0AS08 B 30 17.5 5.55* 1.944
C 0D 40
A 50AS09 B 40 42.5 2.40* 2.016
C 80D 0
A 90AS12 B 90 92.5 1.08 2.016
C 10D 90
fiR3i5229
TABLE C-10 (CONTINUED)
Avg. CriticalStation Replicate (1) Survival (%) Survival (%) t-value (2) t-value (3)
A 60RS01 B 50 60.0 3.27* 1.944
C 70D 60
A 90RS07 B 40 60.0 1.99* 1.944
C 60D 50
A 90RS11 B 100 90.0 0.52 1.944
C 70D 100
A 50RS12 B 40 52.5 3.61 * 1.944
C 70D 50
A 80RS13 B 70 72.5 1.17 1.944
C 90D 50
A 100RS14 B 60 77.5 0.70 1.944
C 80D 70
Notes:(1) All replicates contained 10 organisms.(2) t-values marked with an asterisk (*) exhibited significantly lower survival when
compared to survival at RS15.(3) Stations which have a non-homogeneous variance have a critical t = 2.016 (p=0.05).
Stations which have a homogeneous variance have a critical t = 1.944 (p=0.05).
Chiron >U
AR3I5230
TABLE C-llSummary of weight data for Chlronomus tentans exposed for 12 daysto Christina River, North and South Disposal Site Wetland Sediments
DuPont-Newport Supplemental Phase III Wetlands InvestigationOctober 1990
Avg. Mean CriticalStation Replicate (1) Dry Wt. (mg) Dry Wt. (mg) t-value (2) t-value (3)
A 4.876RS15 B 4.548 4.592 —— —
C 4.661D 4.283
A 3.810AS03 B 3.230 3.781 2.92* 1.944
C 3.653D 4.431
A 5.960AS05 B 3.513 5.069 0.86 2.016
C 5.241D 5.560
A 4.890AS06 B 3.380 4.078 1.41 2.016
C 3.657D 4.383
A 1.003AS07 B 0.888 2.733 1.65 2.016
C 3.465D 5.577
A ' 0AS08 B 1.680 0.726 8.66* 2.016
C 0D 1.2
A 4.903AS09 B 3.563 3.031 1.47 2.016
C 3.658D 0
A 4.554AS12 B 3.880 4.174 2.12* 1.944
C 4.289D 3.971
SR3I523I
TABLE C-ll (CONTINUED)
Station
RS01
RS07
RS11
RS12
RS13
RS14
Replicate (1)
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
Avg. MeanDry Wt. (mg) Dry Wt. (mg) t-value (2)
5.5404.212 4.444 0.373.7604.262
4.3692.313 3.766 1.523.6724.71
4.6005.188 4.647 0.163.7885.012
1.7241.258 1.328 12.72*1.6070.722
3.0554.180 3.208 2.39*3.9261.670
4.6773.982 4.341 0.984.7733.933
Criticalt-value (3)
2.016
2.016
2.016
1.944
2.016
1.944
Notes:(1) All replicates contained 10 organisms.(2) t-values marked with an asterisk (*) exhibited significantly lower growth (weight) when
compared to growth at RS15.(3) Stations which have a non-homogeneous variance have a critical t = 2.016 (p=0.05).
Stations which have a homogeneous variance have a critical t = 1.944 (p=0.05).
chironZ.xl*
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TABLE C-14Summary of Survival Data for Hyalella azteca Exposed for 28 days toChristina River, North and South Disposal Site Wetland SedimentsDuPont-Newport Supplemental Phase III Wetlands Investigation
_____________________October 1990________________
Avg.Station Replicate (1) Survival (%) (2) Survival (%) t-value (3)
1 65RS15 2 65 66.25 ——
3 704 [65]
1 20AS03 2 15 15.0 10*
3 104 15
1 50AS05 2 50 57.5 13.5
3 704 60
1 65AS06 2 80 70.0 19.5
3 554 [80]
1 0AS07 2 0 0 10*
3 04 0
1 5AS08 2 5 2.5 10*
3 04 0
1 85AS09 2 80 68.75 18
3 504 60
1 35AS12 2 45 36.25 10*
3 204 45
AR3I523I*
TABLE C-14 (CONTINUED)
Avg.Station Replicate (1) Survival (%) (2) Survival (%) t-value (3)
1 10RS01 2 50 32.5 13.5
3 704 0
1 80RS07 2 85 80.0 25.5
3 704 85
1 55RS11 2 40 47.5 10*
3 454 50
1 0RS12 2 0 0 10*
3 04 0
1 50RS13 2 85 65.0 18
3 854 40
1 35RS14 2 10 37.5 11.5*
3 654 40
Notes:(1) Each replicate contained 20 organisms (except RS15 rep. 4 and AS06 rep. 4).(2) Numbers in brackets [ ] represent winsorized data point estimates.(3) Critical t values for rank-sum tests = 12<P<24 (p=0.05).
t-values marked with an asterisk (*) exhibited significantly lower survival whencompared to'survival at RS15.
hyalellaxls
TABLE C-15Summary of Weight Data for Hyalella azteca Exposed for 28 days
to Christina River, North and South Disposal Site Wetland SedimentsDuPont-Newport Supplemental Phase III Wetlands Investigation
October 1990
Avg. MeanStation Replicate (1) Dry Wt. (mg) Dry Wt. (mg) t-value (2)
1 0.09RS15 2 0.09 0.08 ——
3 0.074 ND
1 0.18AS03 2 0.10 0.16 2.632
3 0.154 0.23
1 0.20AS05 2 0.21 0.18 3.252
3 0.204 0.13
1 0.07AS06 2 0.08 0.07 0.295
3 0.104 0.05
1 NDAS07 2 ND ND ND
3 ND4 ND
1 0.20AS08 2 0.20 0.20 3.158
3 ND4 ND
1 0.09AS09 2 0.13 0.09 0.332
, 3 0.084 0.07
1 0.04AS12 2 0.04 0.07 0.504
3 0.134 0.06
&R3I5236
TABLE C-15 (CONTINUED)
Station
RS01
RS07
RS11
RS12
RS13
RS14
Replicate
1234
1234
1234
1234
1234
1234
Avg.DryWt(mg)
0.150.060.09ND
0.110.080.110.09
0.110.090.110.10
NDNDNDND
0.080.080.100.11
0.060.250.080.10
Mean Mean Dry Wt.Dry Wt. (mg) t-value (2)
0.10 0.482
0.10 0.477
0.10 0.525
ND ND
0.08 0.356
0/12 1.233
Notes:(1) All replicates contained 20 organisms (except RS15 rep. 4 and AS06 rep. 4).(2) Critical t-value for Bonferroni's Modified t test = 2.441 (p=0.05).
hy«l«)l«2.xi*
flR3i5237
TABLE C-16Summary of Length Data for Hyalella azteca Exposed for 28 days
to Christina River, North and South Disposal Site Wetland SedimentsDuPont-Newport Supplemental Phase III Wetlands Investigation
October 1990
Avg. MeanStation Replicate (1) Length (mm) Length (mm) t-value (2)
1 2.18RS15 2 2.27 2.17 ——
3 2.044 ND
1 2.65AS03 2 2.12 2.51 1.739
3 2.364 2.91
1 3.04AS05 2 2.96 2.88 3.565
3 2.884 2.63
1 2.03AS06 2 2.25 2.16 0.046
3 2.384 1.96
1 NDAS07 2 ND ND ND
3 ND4 ND
1 1.91AS08 2 2.30 ^ 2.11 0.247
3 ND4 ND
1 2.36ASQ9 2 2.61 2.23 0.315
3 2.024 1.92
1 2.03AS12 2 1.78 1.92 1.247
3 2.104 1.76
AR3I5238
TABLE C-16 (CONTINUED)
Station
RS01
RS07
RS11
RS12
RS13
RS14
Replicate (1)
1234
1234
1234
1234
1234
1234
Avg. MeanLength (mm) Length (mm)
2.301.96 2.212.37NO
2.602.36 2.462.552.33
2.221.97 2.222.582.08
NDND NDNDND
2.041.93 2.072.312.01
2.501.85 2.132.052.11
t-value (2)
0.211
1.474
0.250
ND
0.461
0.135
Notes:(1) Each replicate contained 20 organisms (except RS15 rep. 4 and AS06 rep. 4).(2) Critical t-value for Bonferroni's Modified t test = 2.441 (p=0.05).
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l i i « l 2 3 ! sg ! * §8 a. * •§• = S. • ^ a 91 « •§••*=it 11 i ii t u si § i s3 j _ o c o ^ " c o > 0 ) ^ . ~ 2 0 ' «II t § I 1? f * f 1 i i IC O S c o L L < X o Q . u . u . £ : Z i I o
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TABLE C-19Total Number of Fish Collected from the Christina River in the Vicinity of the DuPont-Newport Plant
and at the Field Reference Station, RS15Ou Pont-Newport Supplemental Phase III Wetlands Investigation
________________________November 1990____________________
NewportScientific Name Vicinity of Du Pont Plant RS15
American eel Anguilla rostrate 1 —gizzard shad Dorosoma cepedianum 32 74carp Cyprinus carpio — 1silvery minnow Hybognathus regius 44 111golden shiner Notemigonus crysoleucas 3 3white sucker Catostomus commersoni 7 8white catfish Ictalurus catus 7 4brown bullhead Ictalurus nebulosus 5 32channel catfish Ictalurus punctatus 3 5mummichog Fundulus heteroclitus — 2white perch Morone americana 31 13striped bass Morone saxatilis 1 —pumpkinseed Lepomis gibbosus — 10bluegill Lepomis macrochirus 3 8largemouth bass Micropterous salmoides 3 3black crappie Pomoxis nigromaculatus 5 8yellow perch Perca flavescens — 12hogchoker Trinectes maculatus 1 1
total 146 295
Note:All specimens captured using an Indiana Trap Net (Standard Frame Net) and/orStandard Hoop Net (Catfish Trap).
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Appendix D
152^9
Woodward-ClydeConsultants
APPENDIX D
SEDIMENT QUALITY TRIAD
At the request of EPA (March 5, 1992 meeting with EPA), the Sediment Quality Triadapproach for assessment of sediment quality at the Du Font-Newport Site was not includedin this version of the EE. However, inthe interest of completeness the original text andfigures of the Sediment Quality Triad as it appeared in the July 30, 1991 Draft EE arepresented here.
D-l
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7.0SEDIMENT QUALITY TRIAD
The EPA requested (USEPA, 1990) that the Sediment Quality Triad (the Triad) (Long,1989) be one of the tools used in the Du Pont - Newport Site EE to assess sedimentquality in the study area. The Triad approach utilizes sediment chemistry data, benthiccommunity analyses and toxicity testing results to classify sediment quality. Bycomparing sediment quality data, from stations near the North and South Disposal siteswith data from field reference Station RS15 located approximately 5 miles upstreamfrom the Site, a relative assessment can be made as part of the evaluation of the needto remediate given areas. Since stations in both river and wetlands habitat werecompared to a river reference station, this also assumed that inherent differences inchemistry, and sediment depositional features among stations would not alter theoutcome of the Triad evaluation.
7.1 SEDIMENT CHEMISTRY
Owing to differences in deposition rate, sediment types, grain-size and organic mattercontent, there is considerable variation in the concentrations of constituents of concernamong stations. This confounded clarification of station to station differences caused bydisposal site inputs has hampered the EE. Since the Triad approach seeks to relatedifferences in sediment composition to benthic biota and the response of test organismsto sediment toxicity testing, a clearer picture of station differences in metalcontamination was necessary.
To improve resolution of the station to station differences in the constituents of concern,the data were first normalized and then compared to the reference station data. Themetals data were normalized to the most conservative indigenous element found in thesediment. An evaluation of the sediment data identified calcium as the indigenouselement with the least variation among stations. The calcium concentration amongstations varied by only a factor of three while the concentrations for some of the metalsof concern varied by nearly three orders of magnitude. The sediment concentration of
88C2076-4V . 07-30-91ENVIRONMENTAL EVALUATION REPORT 7-1 EEREPORT.CM/NEWPORT1
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each constituent of concern at each station was divided by its respective calciumconcentration to normalize the data. The results were then divided by the normalizeddata values for the reference station to calculate a ratio to reference value (RTR) foruse in the Triad evaluation (Table 21).
These values suggest that if a station's RTR is equal to 1.0, then, that particular stationis similar to the reference station in terms of constituents of concern. Although an RTRvalue greater than one may appear to suggest metal contamination, the station may notbe different from the reference station because of the natural variation hi the RTR valuecaused by the range of calcium concentrations used to normalize the data. Therefore,RTR values greater than 1.0 should be interpreted as a qualitative expression and notas a measure of metal contamination at a station.
This evaluation of the sediment data allowed identification of three apparent Site-relatedregions of sediment enrichment for some constituents of concern (Table 20). At theNorth Disposal Site drainageway, higher RTR values for all metals occurred near thecentral portion of the drainageway, particularly around Stations AS07, AS08, and AS09.In the South Disposal site wetlands, higher RTR values were identified for barium,cadmium, copper, lead, and zinc; with little or no evidence of chromium or mercuryenrichment. Along the north bank of the Christina River near CIBA-GEIGY, RiverStations RS11 and RS12 show a pattern of higher RTR values for barium, cadmium,lead, and zinc. RTR values for chromium, copper, and mercury at these stations werelow.
12 BENTHIC COMMUNITY DATA
Although the sediment chemical evaluation does show some stations with apparent metalenriched sediments, this factor alone does not indicate bioavailability of the metals tobiota, or any degradation of the local benthic infauna. The investigation of benthicinfauna showed community level degradation at some stations has occurred as describedbelow.
At the North Disposal site drainageway, a dramatic reduction in abundance of benthicorganisms was observed at stations AS07, AS08, and AS09 which corresponds with high
88C207&4V . . 07-30-91ENVIRONMENTAL EVALUATION REPORT 7-2 EEREPORT.CM/NEWPORTl
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concentrations in the sediments. This suggests bioavailability of at least some of theconstituents of concern at these stations. Stations AS 12 and AS06 did not showdegradation of communities and had relatively low concentrations of metals in thesediments.
At the South Disposal site benthic fauna was abundant despite high levels of allconstituents of concern except mercury and chromium. This suggests reducedbioavailability of the metals at these stations. The higher proportion of fine silt and clayparticles in these sediments compared to stations AS07, AS08, and AS09, may enhancesediment sorption of the metals and limits their bioavailability.
In the river, abundance of benthic biota was variable and did not show a clear trend ofdegradation at stations with higher metal concentrations. On the other hand, the ratioof the abundance of dipteran insect larvae to the abundance of oligochaete wormsshowed a major reduction at stations RS14, RS12, RS11, and RS07. If the ratio ofdipterans to oligochaetes is taken as an index of pollutional stress (Howmiller and Scott,1977; King and Ball, 1964), data from these stations may suggest impacts. Theseobservations led to the use of benthic abundance values for the wetlands stations anddipteran/oligochaete RTR values for the river stations in preparation of the Triadevaluation.
7.3 SEDIMENT TOXICITY TESTS
Toxicity tests with Pimephales (fathead minnow) and Ceriodaphnia (water fleas) exposedto sediment elutriate from North Disposal site drainageway stations showed significanttoxicity at Station AS07. Solid phase sediment toxicity tests with Chironomus andHyalella exposed to sediment from AS07, AS08, and AS09 showed significant toxiceffects. These results suggest bioavailability of sediment metals at the three NorthDisposal site stations.
At the South Disposal site wetlands, no significant effects of either solid phase sedimentsor their elutriates could be detected with the three organisms tested. Hyalella exposedto sediment from Station AS05 had significantly greater survivorship compared to thereference sediment. These results suggest reduced bioavailability at the South Disposal
88C207IMV . . 07-30-91ENVIRONMENTAL EVALUATION REPORT 7-3 EEREPORT.CM/NEWPORT1
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site stations. The toxicity data for Ceriodaphnia exposed to South Disposal site wetlandssediment elutriates were used to prepare the Triad plot of this area.
Elutriates from river station sediments showed no toxic effects on Pimephales. Onlyelutriate from Station RS07 significantly reduced survival in the Ceriodaphnia tests.Likewise, significant reduction in survival of Chironomus occurred at river stations RS01,RS07, and RS12. Since the solid phase toxicity test using Chironomus larvaeincorporated the most field stations and the test organism appears sensitive both intoxicity tests and to the dipteran/oligochaete RTR community parameter, these resultswere used for the Triad evaluation described in the following section.
7.4 SEDIMENT QUALITY TRIAD RESULTS
Frequently sediment chemical studies are used to determined the distribution andconcentration of toxic constituents in aquatic systems. However, these data aloneprovide no indication of the biological availability or potential toxicity of the testsediment to benthic infauna. The Sediment Quality Triad, as described by Long (1989),incorporates data on sediment chemistry, benthic infauna to evaluate sediment quality,and sediment toxicity to test organisms. The Triad triaxial plot is a graphic techniquethat results in a triangular figure with each point describing a particular station's valuefor sediment chemistry, infauna and toxicity. The results provide a visual comparisonof station to station differences in sediment quality.
Since the Triad plots incorporate a considerable amount of information and the resultingtriangles can be quite variable in appearance, a general description of theirinterpretation is appropriate. In this study, the data were plotted to show a maximumdegradation of each factor as the Triad origin is approached. Consequently, the plot forstations with high levels of chemical constituents, toxicity and biological effects wouldappear as smaller triangles nested inside the reference station plot. The plot of stationssimilar to the reference station would appear nearest the reference triangle plot.Stations with lower constituent concentrations, a higher infauna measure and equal orlower toxicity would be larger triangles plotting near or outside the reference stationtriangle. Sometimes the triangles appear strongly skewed. For example, if both toxicityand the infauna measures appear similar to the reference station while sediment metals
88C2076-4V . . 07-30-91ENVIRONMENTAL EVALUATION REPORT 7-4 EEREPORT.CM/NEWPORT1
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levels are high, this may suggest that the constituents have little or no bioavailability tothe organisms. Conversely, if the metals levels are low and similar to the referencestation but the infauna appear effected and the sediment has toxic effects on the testorganisms, then an unidentified constituent may be present in the sediment.
Triad plots for the North Disposal site drainageway did not utilize the river referenceStation RS15, owing to normal differences in riverine versus wetlands drainage habitatand biota. However, the abundant biota, very low sediment metals levels, and highsurvival of Chironomus larvae in the toxicity tests at Station AS 12 suggest that stationas a reasonable reference station for comparison with the other wetlands stations (Figure6). This comparison shows stations AS06 and AS 12 are similar in terms of toxicitytesting results, benthic infauna and sediment chemistry. There is little or no evidenceof metals enrichment in the sediment or sediment toxicity at these two stations and thebenthic infauna were abundant and well diversified. However, the Triad plots for AS07,AS08, and AS09 are much smaller and are clearly nested within those for AS06 andAS 12. These plots suggest that in the central portion of the North Disposal sitedrainageway, the constituents of concern are bioavailable and are presently causingbiological effects on the benthic infauna. Based on the Triad plots of all the stationsevaluated in this study, the area around Station AS07 appears to have the greatestimpacts at the Site.
In the South Disposal wetlands (Figure 7) the biological aspects of Station AS01 andAS03 sediments were not comparable to the river reference station. Therefore, theTriad plots for these stations were compared to the plot for AS 12, the most upgradientstation in the North Disposal site drainageway. This comparison shows strong skewness,where sediment metals enrichment apparently resulted in relatively little toxic effects ontest organisms and the benthic infauna appeared abundant and quite diverse. TheseTriad plots suggest that lower bioavailability of the metals in the sediment under thepresent conditions may limit their biological effects. Retention of the sediment metalswithin the marsh sediment may be enhanced by the large sorption capacity of thepaniculate organic matter produced by decomposition of marsh vegetation. Thisenhancement may also be due to the reduced tidal flushing associated with the tidal gateon the South site drainageway and the reversed drainage patterns caused by theconstruction of Route 141.
8SC2076-4V . 07-30-91ENVIRONMENTAL EVALUATION REPORT • 7-5
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Among the Christina River stations, the results of the Triad plots are not as clear(Figure 8). Station RS13, located immediately upstream of the north drainagewaydischarge into the river, appears quite similar to the reference Station RS15. StationRS14, located immediately downstream from the north drainageway, shows low toxicityvalues and low metals enrichment in the sediments and is quite similar to RS15.However, biota are dramatically reduced at Station RS14. Field notes suggest that thesemay be due to poor benthic sample recovery at this station rather than sedimentchemistry.
The Triad plots for Stations RS11 and RS12 show dramatic metals enrichment in thesediments and altered benthic community structure. Likewise, survival of Chironomusin sediments from Station RS12 is significantly lower than in reference Station RS15sediments. This suggests that of all the river stations tested, these two stations may bethe most affected.
The plot of Station RS07 shows moderate toxic effects and reduced biota, but a sedimentchemical regime equal to or better than reference Station RS15. These results may bedue to natural variations in the benthic community, physical limitations of the sandysubstrate encountered at the station, or an unidentified factor from this station. (StationRS07 is located under the James Street Bridge in the vicinity of storm water outlets forthe city of Newport). In either case, the evidence for Site-related impacts at this stationis not strong.
The Triad plot for Station RS01 appears intermediate between the reference station anda heavily altered station such as RS12. Station RS01 is located mid-river atapproximately 150 feet downstream of the North Disposal site drainageway mouth in thegeneral vicinity of river Station RS12.
In conclusion, wetlands Stations AS07, AS08, and AS09 in the vicinity of the NorthDisposal site and river stations RS11 and RS12 along the north bank of the ChristinaRiver demonstrate sediment toxicity significantly greater than that of the referencestation. Stations RS01 and RS07 also demonstrate moderate toxic effects. While StationRS06 has levels of constituents of concern in excess of the reference station, impacts of
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these concentrations were not clearly demonstrated by toxicity test results or benthiccommunity data.
88C2076-4V . 07-30-91ENVIRONMENTAL EVALUATION REPORT 7-7 EEREPORT.CM/NEWPORT1
TABLE 21
RATIO TO REFERENCE VALUES FOR CONSTITUENTS OF CONCERN AS THE RATIOOF NORMALIZED SEDIMENT CONCENTRATIONS AT ALL
FIELD STATIONS VERSUS THE REFERENCE STATION (RS15).DUPONT - NEWPORT ENVIRONMENTAL EVALUATION
Station
CONSTITUENTS OF CONCERN——————Barium Cadmium Chromium Copper Mercury
=T
Lead Zinc
CHRISTINA RIVER
RS15RS04RS13RS14RS01(1)
RS12RS11RS07
1.0.8
.6
.95.3
9.859.7
.6
1.0.7.3.63.4
352.0120.0
.9
1.0.4
.2
.31.63.73.9.2
1.0.9.4
.51.83.93.1.3
1.0.4.2.3.2
1.02.4.2
1.0
.8
.31.98.525.734.8
.3
1.0
1.7
.2
.43.443.2
32.6.2
NORTH DISPOSAL SITE WETLANDSAS 12
AS06
AS07
AS08AS09
1.5.9
37.514.07.0
.41.0
31.213.12.2
.2
.85.54.8.4
.84.0
132.019.55.2
.1
.69.24.11.9
1.63.7
. 684.090.629.0
.41.15
83.312.67.0
SOUTH DISPOSAL SITE POND
AS01 62.7 17.5 .3 5.9 .6 19.7 13.0SOUTH DISPOSAL SITE WETLANDS
AS03AS05
161.052.3
20.0
6.9.5
.336.73.2
1.7.5
115.54.5
51.65.7
NOTE: (1) RS01 used Phase II data and was compared to RS04 as a reference.
88C2076-»V H K J I D 2 5 8 06-12-91ENVIRONMENTAL EVALUATION REPORT TBL21.CM/NEWPORT1
lf___JJ. l±l:*DJI."li'r--I
SOLID PHASETOXICITY 1
LEGEND:
_™ -_-,_ AS12
AS07
BENTHICINFAUNA2 5.
«>NOTE:
1.) SOLID PHASE TOXICITY- , ,PERCENT SURVIVAL OF " SEDIMENT CHEMISTRY3CHIRONOMUS TENTANS
2.) BENTHIC INFAUNA^ "1>0LOG [" # INDIV./ M2 "I
3.) SEDIMENT CHEMISTRY-
LOG f 1 1 t-2.0L MEAN RTR J
RTR REPRESENTS RATIO OF TEST STATION MFWPORTVALUE COMPARED TO VALUE AT RS15 * NtwuKl.
Rtv. No. Oat* R«vUlon Ch«ek«d by;
SEDIMENT QUALITY TRIADNORTH DISPOSAL WETLANDS SITEDATA COLLECTED OCTOBER, 1990
DUPONT - NEWPORT
Woodw«rd-Cty<te ConwttMteConsulting EhgkiMra. G«ologl*t« and Environmental Seta-.
Job No.: 8802076—4V Drawing No. 80763004Drawn by: D£0 Ch«ek«d bySeal*:
N.T.S.
1R3
Dot*: 06/07/91
FIGURE 6
I5259
ELUTRIATE PHASETOXICITY1
SEDIMENT CHEMISTRY3
NOTE:
1.) SOLID PHASE TOXIClTY=PERCENT SURVIVAL OFCERIODAPHNIA SP.
2.) BENTHIC INFAUNA=
LOG J # INDIV./ M2 1
3.) SEDIMENT CHEMISTRY=
LOG f 1L MEAN RTR
NOTE: PLOT OF AS12 PROVIDED FORVISUAL COMPARISON ONLY.RTR REPRESNTS RATIO OF TEST STATIONVALUE COMPARED TO VALUE AT RS04.
1-2.0
R«v. No. Dot« Typ« of R«vMon Ch«ck«d by
SEDIMENT QUALITY TRIADSOUTH DISPOSAL WETLANDS SITEDATA COLLECTED AUGUST. 1989
DUPONT - NEWPORTNEWPORT, DELAWARE
Woodward-dyd* ComuttanteV—s Consulting EngkiMn. Gcologteta and Enviroorrnntal Sdcniteti
Job No: 88C2078-4V Drawto'g Na 80762003Drown by p.E.6.Seal*:
by
N.T.S.
Dot* 08/07/91
FIGURE 7
SOLID PHASETOX1CITY1
NOTE:
1.) SOUD PHASE TOXICITYPERCENT SURVIVAL OFCHIRONOMUS TENTANS
2.) BENTHIC INFAUNA=LOG F TOTAL #/ TOTAL # 1RTR LDIPTERA/OLJGOCHAETAJ
3.) SEDIMENT CHEMISTRY^LOG f"_______1_______"I
L MEAN RTR J
RTR REPRESENTS RATIO OF TEST STATIONVALUE COMPARED TO VALUE AT RS15.
SEDIMENT CHEMISTRY3
-1.0
R«v. No. Dot* of R«vl«lon Ch»ek«d by
SEDIMENT QUALITY TRIADFOR THE CHRISTINA RIVER
DATA COLLECTED OCTOBER. 1990DUPONT - NEV/PORTNEWPORT, DELAWARE
Woodw«rd-C!yd« ConwttanteConwltlng EngkiMT*, GcologM* and Environm«ntal
Job NOJ 8BC207B-4VDrawn by. O.E.O.Scale
Drawing No. 80763001Checked
N.T.S
Dat« OB/07,
RGURE 8
AR3I526I
Appendix E
APPENDIX E
PHASE I CHRISTINA RIVERSEDIMENT CHEMISTRY DATA
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4R3I5267
lifer-
Appendix P
JR3I5268
Woodward-ClydeConsultants
APPENDIX F
SENSITIVITY ANALYSIS
Woodward-ClydeConsultants
APPENDIX FSENSITIVITY ANALYSIS
The calculations of receptor exposure and uptake in the terrestrial ecological evaluationfor the Du Font-Newport Site (Site) incorporate numerous parameter values. At therequest of USEPA (July 1, 1992 comment letter), a sensitivity analysis was performedto identify parameters to which the risk characterization results are most sensitive. Inthis analysis, the values of parameters suspected of driving the risks are varied and thedegree to which changes in the input variable result in changes in the risk estimates(Hazard Indices) is computed, summarized and compared. Five key input parametersas defined by USEPA in their letter and in a telecon conducted July 20, 1992, wereevaluated as part of this analysis, as follows:
A. The 10% matrix effect (bioabsorption) factor as applied to food and sedimentintake value for the muskrat and heron was increased to 20%.
B. The geometric mean was changed to an arithmetic mean for the calculation offood, sediment and soil concentrations. The 95% Upper Confidence Limit(UCL) of the arithmetic mean was also used to calculate Hazard Index (HI)values.
C. The percent of sediment in the muskrat's diet was changed from 5% to 10%.
D. The lowest and highest Screening Intake Values (SIVs) from EE Table 25 wereused rather than the median values shown in EE Table 26.
E. The water ingestion pathway, in addition to the sediment and food ingestionpathways for the muskrat and the heron, was evaluated.
Each of these key exposure parameters was applied independently to evaluate themagnitude of their impact on the final HI values. This analysis was not probabalistic inthat no estimate of the likelihood of occurrence of each parameter value is made.
88C20764V/SENSmVj\NA/DPN7 F-l ' 08-06-92
Woodward-Clyde
Although thex ffput parameter value was changed to a more conservative number, thei x**"
)of that number more accurately representing actual ecological conditions wasjlished. The assumptions made in the initial exposure evaluation are already
considered to be sufficiently conservative given the available information, knowledge ofthe Site, and objectives of the study.
The HI approach to risk assessment as used in human health risk evaluation isconservatively intended to provide protection to individuals. Emphasis of the initialecological exposure evaluation was on the screening of potential impacts to terrestrialreceptors at the population level and not the individual level. This follows USEPA RiskAssessment Guidance for Superfund, Part A, Human Health Evaluation Manual (1989).Unlike human health risk assessments, where emphasis is placed on evaluatingreasonable maximum exposure to the individual, assumptions and input values wereselected for this evaluation so that the combination of all intake variables would resultin an estimate of the reasonable maximum exposure for that pathway to the terrestrialreceptor population. Because of the uncertainties involved in this type of evaluation,conservative values were selected for input parameters to ensure that the evaluationwould be protective of ecological receptors at the site. Consideration of populationexposure rather than individual exposure formed the basis for critical decisions such asthe following, that were made in implementing the HI methodology:
• selection of statistical methods to express environmental concentrations infood, sediment, and soil that reflect the pattern of exposure to terrestrialreceptor populations in the field;
• selection of SIVs and uncertainty factors that correspond to the exposureconditions, chemical species and the effects of concern; and
• matching SIVs and environmental concentrations in the HI calculations sothat they logically correspond.
Data were very limited in this ecological evaluation both for chemical exposureconcentrations and for establishing SIVs that correspond to exposure conditions for theselected terrestrial receptor populations. Also, not all chemical species for a particular
88C20764V/SENSmV.ANA/DPN7 F-2 " fl R 3 I 5 2 7 I 08-06-92
Woodward-ClydeConsultants
metal (e.g., barium acetate) were considered in the selection of the SIV, based on thelikelihood for those chemical species to occur in the environment at the Site or forreceptor populations to be exposed to those chemical species.
The sensitivity of the results to each of the five key parameters is summarized below.A summary of the resulting potential changes in the estimated His from the adjustedparameters is presented in Table F-l. Results from the input of each of the adjustedparameters is shown in Tables F-2 through F-26.
A. MATRIX EFFECT
The 10% matrix effect factor as applied to food and sediment intake for the muskrat andheron was increased to 20%. The 10% matrix effect value used in the initial evaluationwas based largely on the tendency for barium and the other heavy metals to remainstrongly adsorbed to clay and organic matter in the environment. Bioavailability forthese metals to ecological receptors in the environment is much less than that of metalsadministered to laboratory animals.
By increasing the matrix effect factor from 10% to 20%, the overall HI increases by afactor of 2. For the* muskrat, this results in an HI for food and sediment ingestionincreasing from 1.3 to 2.6 at the South Disposal Site Pond and from 1.7 to 3.5 at theSouth Disposal site drainageway (Table F-4). The HI for sediment ingestion by themuskrat increased from 0.5 to 1.0 at the North Disposal site drainageway (Table F-2).The HI for the heron for combined food and sediment ingestion increased from 0.1 to0.2 (Table F-4). Therefore, the matrix effect factor has limited influence on the overallHis computed for the target receptors.
B. ARITHMETIC MEAN AND 95% UCL
Arithmetic Mean
Selection of exposure concentrations in sediment and food involved considerableuncertainty. Although data from three sampling events were included, not all stationswere sampled during each sampling event. Analytical results from some sampling
88C20764V/SENSrnVj\NA/DPN7 F-3 fl r> o I i- 08-06-92
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stations were especially variable based on differences in sediment grain sizes of thesamples. For example, at RS01, the Phase II sample consisted of 83% fine-grained mudand the Phase III sample consisted of 8% fine-grained mud. These differences resultedin sediment concentrations that varied by a factor of 10 for barium and 18 for lead.Because of the large differences in the physicochemical nature of the sediment data, thegeometric mean, rather than the arithmetic mean, was used initially to better estimateactual sediment exposure conditions to the receptor population), at the various samplingstations.
Metals concentrations in spatterdock (Nuphar sp.) were quite variable between samplingstations and between plant parts, although overall, spatterdock appears to readilyaccumulate barium in its roots and rhizomes. Spatterdock concentrations in the rhizomefrom ASO1 (South pond) were an order of magnitude greater for barium and lead thanthe plant sampled at AS05, and rhizome and root concentrations were considerablyhigher than leaf concentrations. Use of spatterdock to represent the typical diet of amuskrat in this area is debatable. Muskrats are more often observed consuming cattails,bulrush and grasses (Martin et al., 1951), species which may not accumulate barium tothe extent spatterdock does. Ingestion of roots and rhizomes by the muskrat maydepend on the ease with which these plant parts can be extracted from the sediment.
Plant chemical concentrations used in the His were biased upwards by includingestimated values in calculating the weighted geometric mean. While a weightedarithmetic mean may be used to represent the reasonable average exposure from foodingestion by an individual muskrat, a weighted geometric mean was initially used as amore reasonable estimator of muskrat population exposure from food ingestion in theSouth pond and drainageway area.
Usedl ^ ffimetfemean to calculate food and sediment concentrations as opposetilbthe geometric mean resulted in ant increase in the HI for food and sediment by a facto/of 1,4 to 2A Tj£ His for sediment ingestion for the muskrat and heron increased bya factor of 1.02 to 2.7. The only case where the HI increased above one where it waspreviously below one was for food ingestion by the muskrat at the South Disposal sitepond and South Disposal site drainageway (HI increased from 0.78 to 1.5) (Table F-10).The His for food and sediment ingestion by the muskrat at the South Disposal site pond
88C207&4V/SENSITIVANA/DPN7 F-4 /j D O I {- t) — 08-06-921R3I5273
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increased from 1.3 to 2.1 and from 1.7 to 2.5 at the South Disposal site drainageway(Table F-ll). Hence, use of the arithmetic mean rather than the geometric meanresulted in minimal changes in the His.
95% UCL of the Arithmetic Mean
As part of this sensitivity analysis, the 95% UCL of the arithmetic mean was alsocalculated for food, soil, and sediment ingestion by the muskrat, heron, and mouse.Because of the small sample size (<20), the 95% UCL was often greater than themaximum value. Following USEPA Risk Assessment Guidance, Part A, Human HealthEvaluation (1989), the maximum value was used in these instances.
The Human Health Evaluation Manual also states that it is not reasonable to assumelong-term contact with the maximum concentration. Also, assuming the receptor(muskrat, mouse, or heron) populations in the area are consistently ingesting maximumconcentrations for more than one exposure pathway (i.e, muskrat for food and sedimentingestion) provides an unreasonable and overly conservative estimate of risk. The home*range of the muskrat and mouse are relatively small: 200 ft in diameter for the muskrat $(Rue 1981) and 03 acres for the mouse (Grzimek 1990). Therefore, it would be veryunlikely for entire populations of these animals to be consistently exposed to maximumexposure concentrations for both food and sediment (and water). Where the HI isc*greater than 10 based on maximum exposure values for a single exposure pathway, this
. 4
may indicate some individuals to be at greater risk in those "hotspot" locations.
Use of i e S t f G t oFthe arithmetic mean resulted in an increase in the H|J>y afactor ofllb 5 His were raised above one at the South Disposal site drainageway forsediment ingestion by the muskrat (HI from 0.9 to 1.1, Table F-12) and for foodingestion by the muskrat at the South Disposal site pond and drainageway (HI from 0.78to 2.66, Table F-14). The His for food and sediment ingestion by the muskrat increasedfrom 1.3 to 3.3 at the South Disposal site pond and from 1.7 to 3.8 at the South Disposalsite drainageway (Table F-15). Use of the 95% UCL has a minimal effect on the His.
88C2076-4V/SENSrnVANA/DPN7 F-5 ' 08-06-92
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C. PERCENT SEDIMENT IN MUSKRAT'S DIET
The percent sediment in a muskrat's diet was originally estimated at 5%. This estimatewas based on Garten's (1982) estimates for rats, mice and chipmunks. The percentsediment was not expected to be as high as that of a mallard due to the fastidiouscleaning habits of the muskrat. Muskrats were also not thought to ingest sediments tothe extent ducks and other birds commonly do.
Doubling the percent sediment in the muskrat's diet resulted in His for sedimentingestion changing from 0.53 to 1.07 at the North Disposal site, from 0.55 to 1.1 at theSouth Disposal site pond, and from 0.95 to 1.9 at the South Disposal site drainageway(Table F-16). The His for food and sediment ingestion by the muskrat subsequentlychanged from 1.3 to 1.9 at the South Disposal site pond and from 1.7 to 2.7 at the SouthDisposal site drainageway (Table F-17). Doubling the percent sediment ingested byJhemuskrat results in a minimal effect on the His. »
D. SCREENING INTAKE VALUES
In the initial screening evaluation, a median value was selected from the SIVs (see EETable 26) to represent a no observed adverse effects screening threshold value for theterrestrial receptor populations. Selection of the median SFV for use in the HIcalculations was considered the most reasonable and conservative representation of thetoxicity distribution of concern for the following reasons. The SIVs were derived byapplying uncertainty factors of 1000,100, or 10 to the oral dose values obtained from theavailable toxicological literature. A thorough assessment of the relevance and scientificquality of the experimental toxicity studies and the reported doses was not made;therefore, a wide range of values was presented. The low SIVs derived from LD50values by applying uncertainty factor of 1000 were probably too conservative in mostcases. For most chemicals studied, concentrations of 0.01 or less of the acutely toxicvalues are not chronically toxic to aquatic organisms (EPA, 1976); a similar relationshipis probably true for terrestrial receptors. Due to the incorporation of such large safetyfactors, the SIV values are not expected to cause measurable adverse effects in most ofthe exposed receptor populations. Also, as the data base for terrestrial wildlife isextremely limited, values for laboratory animals were used as surrogate values for
88C20764V/SENSITIVANA/DPN7 , F-6 fl r> o , _ 08-06-92
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terrestrial populations. Again, the SIV values were probably overly conservative inthe wildlife populations generally exhibit a much wider range of tolerance than the Vanimal strains used in laboratory experiments.
Use of the lowest and highest SIVs resulted in a wide range in the His. Use oflowest SIV also resulted in HI values greater than one at the reference station in thecase of the muskrat (HI = 3.5 for food and sediment ingestion) (Table F-25) and the,mouse (HI = 1.6) (Table F-23). The range in values for the mouse was the mostextreme, from 1.3 to 92 at the North Disposal site (SGS6), and from 0.6 to 114.8 at theSouth Disposal site (TP5) (Table F-23). The high HI values at these two locations weredue to the extremely low SIV for the mouse for lead ingestion (0.005 mg/kg-BW/day).This value was based on the toxic effect being inhibition of ALAD activity. Whileinhibition of ALAD activity, an enzyme useful in heme synthesis, is a useful indicator oflead absorption, it is not regarded as a toxic or deleterious affect per se. This low SIVvalue should not be used, therefore, in the calculation of the HI. Even though HI valuesare elevated at these two locations, thejSGS6 and TP5 samples were nonrepresentativeof the site as a whole and were not representative of the concentrations to which micepopulations would typically be exposed.
For the muskrat in the case of food and sediment ingestion, the HI ranged from 1.2 to19.3 at the South Disposal site pond and from 1.6 to 22.1 at the South Disposal sitedrainageway (Table F-25). The His for the muskrat for sediment ingestion ranged from0.4 to 4.6 at the North Disposal site drainageway and from 0.1 to 1.9 at AS10/AS11(Table F-22). The HI range for the muskrat for sediment ingestion at the reference sitewas 0.24 to 0.74 (Table F-22). HI values for the heron ranged from 0.1 to 0.6 for foodand sediment ingestion (Table F-25). * s
Use of the lowest and highest SIVs impacts the resultant His the greatest of anyparameter evaluated in this sensitivity analysis. Without reexamining the experimentalbasis for derivation of the lowest SIV value, it is unrealistic and unreasonable howeverto conclude that use of the lowest or highest SIV value and the resultant His present amore accurate or likely portrayal of potential risk to wildlife populations at this Site.
88O07MV/SENSmV.ANA/DPN7 . F-7 . _' 08-06-92
E. DRINKING WATER PATHWAY
HI values were initially only calculated for ingestion of food and sediments for themuskrat and heron and ingestion of soil for the mouse. Data were not available tocalculate ingestion of food by the mouse. HTs were not calculated for the ingestion ofwater by the muskrat and heron as the ingestion of food and sediment were consideredto represent the most significant exposure pathways due to the strong metal-bindingnature of the sediments and soils. Also, water intake for rodents largely comes fromplant and food ingestion (Martin et al. 1951).
As part of this sensitivity analysis, His were estimated for water ingestion by the muskratand heron (Table F-26). Water intake was based on the following allometric equationsfrom Calder and Braun (1983):
Muskrat
Water Intake (WI) (L/day) = 0.099 Wt0-90 (kg)
Water Intake (WI) (L/day) = 0.059 Wt0-67 (kg)
His for water ingestion by the muskrat were calculated separately for the North Disposalsite drainageway and South Disposal site drainageway based on arithmetic means of thedata presented in EE Tables 14 and 15. The HI for water ingestion by the heron wasbased on arithmetic means of data presented for the Christina River in EE Table 16.The screening intake values used were the same as those presented in EE Table 26. Amatrix effect value was not applied in these calculations, although it may be appropriateto do so as the chemical concentrations in water were for nonfiltered samples. Theresultant HI value for the muskrat at the South Disposal site drainageway was 0.02 andat the North Disposal site drainageway it was 0.01 (Table F-26). The resultant HI forthe heron ingesting Christina River Samples was 0.002 (Table F-26). J Qiie of thesevalues is large enough to alter the original conclusions presented in Section 7 of the EE; *
88C207MV/SENSinVANA/DPN7 F-8 fl D O f C O T -» 08-06-92
Woodward-ClydeConsultants
CONCLUSIONS
This sensitivity analysis shows that the calculations are most sensitive to Parameter D,use of the lowest and highest SIVs. An SIV is only an estimated dose which is intendedas a screen to identify chemical exposures that may warrant further investigation. Theuncertainty associated with the SIV is demonstrated by this sensitivity analysis, especiallywhere use of the lowest SIV resulted in HI values greater than one at the referencestation in the case of the muskrat (for food and sediment ingestion and the mouse).Since the highest screening HI was primarily due to the barium Hazard Quotients, andbarium is expected to occur at this Site in its nontoxic form (barium sulfate), it appearsthat the potential impacts of barium are overestimated using this approach.
88C20764V/SEN'SrnVj\NA/DPN7 F-9 a rv « . 08-06-92
3K3I5278
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INDEX
TABLE F-5ARITHMETIC MEAN
AND 95% UCLSEDIMENT SAMPLE CONCENTRATIONS (mg/kg)
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
South Disposal Site Pond:AS01AS02
NMEANMINMAX95% UCLSTD DEVSEMt = .OSMax or 95% UCL
South Disposal Site Drainageway:AS03AS04AS05
NMEANMINMAX95% UCLSTD DEVSEMt = .05Max or 95% UCL
North Disposal Site Drainageway:AS06AS07AS08AS09AS12
NMEANMINMAX95% UCLSTD DEVSEMt = .05Max or 95% UCL
Ba
124677950
210208.5795012467
24468.673194.002258.56.31412467
211802150017400
320026.671740021500
23871.072280.381316.582.92
21500
7693957170715101710
51930.67693957
3071.891196.99535.312.132
3071.89
Cd
7136
253.53671
164.0024.7517.5
6.31471
40.813
45.7
333.1713
45.762.9017.6410.182.9245.7
9.152.421.127.56.9
523.46.952.440.8518.308.18
2.13240.85
Cr
4744
245.54447
54.972.121.5
6.31447
5260
67.7
359.952
67.773.137.854.532.9267.7
287376270300115
5269.6115376
360.6295.4642.692.132360.62
Cu
270285
2277.5270285
324.8610.617.5
6.314285
1107307260
35582601107
1360.52476.03274.84
t
2.921107
5052467624529190
58631902467
1731.98911.40407.592.132
1731.98
Pb
14171820
21618.514171820
2890.77284.96201.56.3141820
5003904576
321615765003
6319.522466.701424.152.925003
6271935348454160550
55907550
1935313316.287770.953475.272.132
13316.28
Hg
0.370.5
20.4350.370.50.850.09
0.0656.3140.5
0.77
0.6
20.6850.60.771.220.120.08
6.3140.77
0.96.5
1.451.350.3
52.10.36.54.482.501.12
2.1324.48
Zn
58003940
2487039405800
10742.021315,22
9306.3145800
1114013803870
35463.331380
1114014012.915071 .332927.942.92
11140
12281229028753730740
54172.6740
122908650.444696.412100.302.132
8650.44
22591/88C2076/TBLF-5.XLS 7/31/92(10:56 AMXRPT . Sheet 1 Of 2
1R3I5285
TABLE F-5ARITHMETIC MEAN
AND 95% UCLSEDIMENT SAMPLE CONCENTRATIONS (mg/kg)
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
AS10/AS11;AS10AS11
NMEANMINMAX95% UCLSTD DEVSEMt-,05Max or 95% UCL
Christina River;RS03RS09RS13RS14RS01RS11RS12RS07RS10RS05RS08RS02RS05
NMEANMINMAX95% UCLSTD DEVSEMts.OSMax or 95% UCL
Ba
265500
2382.5265:o40177.5
6.314500
266139189249334
12000177015611629175833396330
131910.69
139120003611.033461.70960.101.771
3611.03
Cd
3.612.8
28.23.612.837.246.514.6
6.31412.8
5.21.10.752.53
36710204
0.85110.9319
13110.640.751020253.60291.0580.721.771253.60
Cr
37.766.2
251.9537.766.2
141.9220.1514.256.31466.2
5442.443.952.74348842758.8362895660138
13137.6
36488
215.22158.0243.831.771215.22
Cu
55.3157
2106.1555.3157
427.2271.9150.856.314157
5918.327.129.627.613014729.111.6804049128
1359.7211.614782.6346.6412.941.77182.63
Pb
150395
2272.5150395
1045.97173.24122.56.314395
15621.627.1152132
2170144053
10.647756.4151301
13395.9810.62170717.98655.57181.821.771717.98
Hg
0.320.51
20.4150.320.511.010.13
0.0956.3140.51
0.70.210.20.20.251.30.50.210.170.80.190.30.8
130.450.171.30.620.350.10
1.7710.62
Zn
8492520
21684.58492520
6959.851181.58835.56.3142520
124019396.3169J6551
105001250055510329456408123370
132598.33
96.3125004614.554104.791138.471.771
4614.55
I
2259l'88C:07*TBLF-5XLST/3lfi>2{l05«AM>'RPT . ' Sheet 2 Of 2
fl/?3i5286
TABLE F-6ARITHMETIC MEAN AND 95% UCL
SOIL SAMPLE CONCENTRATIONS (mg/kg)DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
Reference Stations:SGS-3SGS-4
NMEANMINMAX95% UCLSTD DEVSEMt = .05max or 95% UCL
North Disposal Site:SGS-6
South Disposal Site:TP-5
Reference Area:(Local Delaware)
Ba
58895
2476.5
58895
3118.909591.8483759
418.56.314895
3550
19800
500
Cd
3.22.3
22.752.33.2
5.59130.636396103
0.456.3143.2
36
58
-
Cr
2318
220.51823
36.2853.535533906
2.56.31423
44
*"
50
Cu
5.48.5
26.955.48.5
16.73672.192031022
1.556.3148.5
218
324
<10
Pb
2747
2372747
100.1414.14213562
106.31447
761
1520
20
Hg
--
„----
• ---—
1.6
0.34
0.051
Zn
3674
255
36
74174.966
26.8700576919
6.31474
8240
2810
28
22591/8SC2076/TBLF-6.XLS 7/31/9201:19 AM)/RPT t. _. ... . _. Sheet 1 Of 1
TABLE F-7aARITHMETIC MEAN AND 95% UCL
NUPHAR SAMPLE CONCENTRATIONS (mg/kg)DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
RootAS01AS03AS05
NMEANMINMAX95% UCLSTD DEVSEMt«.OSmax or 95% UCL
AS01 Rep, 1AS01 Rep, 2AS03 Rep, 1AS03 Rep, 2AS05 Rep, 1AS05 Rep, 2
NMEANMINMAX95% UCLSTD DEVSEMt*,05max or 95% UCL
LsafAS01 Rep, 1AS01 Rep, 2AS01 Rep, 3AS03 Rep, 1AS03 Rep. 2AS03 Rep, 3AS05 Rep. 1AS05 Rep. 2AS05 Rep, 3
NMEANMINMAX
95% UCLSTD DEVSEMt«.05max or 95% UCLWeighted arithmetic mean and 95% UCLMEAN95% UCL
Ba
76006120850
34856.67
8507600
10837.953547.912048.38
2.927600
1950230029407960295369
62635.67
2957960
4951.912815.691149.502.015
4951.91
876619760421
' 636431117152161
9463.67117876
636.75279.1793.061.86
636.75
1769.323142.49
Cd
5.12.92.3
33.432.35.15.921.470.852.92
• 5.1
11.71.62.60.860.87
61.440.862.62.000.680.28
2.0152.00
0.931
0.860.861.21.30.821.21.2
91.040.821.3
1.160.180.061.861.16
1.361.77
Cr
3.64.94.2
34.233.64.95.330.650.382.924.9
22.42.23.11.73.5
62.481.73.53.050.690.28
2.0153.05
1.92
1.71.72.41.81.61.72.4
91.911.62.4
2.100.300.101.862.10
2.312.71
Cu
12159.216.9
365.7016.9121
153.9652.3530.232.92121
2127.236
52.612.617
627.7312.652.639.8014.675.99
2.01539.80
4.65.14.3
12.115.814.74.14.66.4
97.974.1
15.8
10.954.821.611.8610.95
20.7430.88
Pb
387060216.1
31496.03
16.13870
4997.032076.681198.972.923870
2172322004367.27.3
6183.257.2436
315.71161.0265.732.015315.71
24.34.33.72.64.52.72.53
3.5
95.682.524.3
10.037.022.341.8610.03
168.98355.87
Hg
0.351
10.35
0.3510.351
—--~-
0.355
10.36
0.3550.355
~----
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Zn
525591133
3416.33133591
833.72247.58142.942.92591
115203239507117157
6223115507
344.22147.3660.162.015344.22
45.740.442.259.877.97847
53.552.5
955.2240.478
64.0214.204.731.8664.02
157.17230.47
2259l«$C20WrBLF-7A,XLS 7/3!/S2(Il;32AMVRPT Sheet 1 of 1
AR3I5288
1TABLE F-7b
ARITHMETIC MEAN AND 95% UCLREFERENCE SAMPLE (RS15) CONCENTRATIONS (mg/kg)DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
Root
RSISRep. 1RSISRep. 2
NMEANWINMAX95% UCLSTD DEVSEMt = .05max or 95% UCL
_eafRS15 Rep. 1RSISRep. 2RSISRep. 3
NMEANMINMAX95% UCLSTD DEVSEMt=.05max or 95% UCLWeighted arithmetic mean and 95% UCL Mean
95% UCL
Ba
387
162131
2146.5131162
244.3721.9215.5
6.314162
99.881.675.4
385.675.499.8106.9812.687.322.9299.8
131.12
145.26
Cd
2.6
0.990.77
20.880.770.991.570.160.116.3140.99
0.831.40.88
31.040.831.41.570.320.182.921.4
1.0365
1.255
Cr
5.5
22
2222200
6.3142
1.72
1.8
31.831.72
2.090.150.092.922
2.1
2.175
Cu
12.3
8.17.8
27.957.88.18.900.210.156.314
8.1
5.26.89.6
37.25.29.6
10.952.231.292.929.67.83
8.985
Pb
20.8
3.47.9
25.653.47.9
19.863.182.256.3147.9
3.63.72.7
33.332.73.74.260.550.322.923.7
5.365
6.655
Hg
0-00
---
6.314-
_
------
2.92--
-
Zn
116
89.9116
2102.9589.9116
185.3518.4613.056.314116
48.347
46.4
347.2346.448.348.870.970.562.9248.378.53
85.535
22591/88C207OTBLE-7B.XLS 7/31/92(11:45 AMyRPT /IDQ I C 11 rt n Sheet 1 Of 11R3I5289
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TABLE F-26HAZARD INDEX FOR WATER INGESTION
DUPONT-NEWPORT ENVIRONMENTAL EVALUATION
MuskratWater Intake (Wl)(L/day) = 0.099 * Wt.a90(kg)
Dose(mg/kg-E
Muskrat - South
ChemicalBariumCadmiumChromiumCopperLeadZinc
•w/H.,A_WI<L/day)*Chem.Conc.(mg/L)' " BodyWeight(BW)(kg)
Disposal Site Drainageway:
Chem. Cone.1"fppm)
1.0560.0041
0.0316
0.011
0.0356
0.189
'" Chem. Cone. » Arithmetic mean of
Muskrat - Korth
Chemical
BariumCadmiumChromiumCopperLeadMercuryZinc
Disposal Site Drainageway:
Chem. Cone.121(ppm)
0.2590.0040.005
0.012
0.053
0.0003
1.702
Dose(mg/kg-BW/dav)
0.1000.000390.0030.001
0.003
0.018
Screening Intake Value(mg/kg-BW/dav)
102.30.24
30
79
30
South Disposal Site Drainageway concentrations (Table
Dose(mg/kg-BW/dav)
0.0250.000380.00050.001
, 0.005
0.00003
0.162
Screening Intake Value(mg/kg-BW/dav)
102.30.243079
0.2
30
Hazard Index
0.0100
0.00017
0.0125
0.00003
0.00004
0.0006
0.0233915)
Hazard Index
0.00250.000170.00200.00004
0.00006
0.00014
0.0054
0.0102
Cham. Cone. = Arithmetic mean of North Disposal Site Drainageway concentrations '(Table 16)
52WttCZOH.TAM.EFM 07,30-92(2.ItfrntltfT • »•*_. Sheet 1 Of 2• •«._. oneei i c
1R3/5308
TABLE F-26(Concluded)
Heron
Water Intake (WI)(L/day) = 0.059 * Wt.as7(kg)
1 ~' ~ ' " BodyWeight(BW)(kg)
Heron - Christina River:
Chemical
BariumCadmiumChromiumLeadZinc
Chem. Cone.131(ppm)
0.0910.006950.00765
0.035
0.117
Dosefrng/kg-BW/day)
0.00370.000280.0003
0.001
0.0048
Screening Intake Value(mg/kg-BW/dav)
100.640.56
26.25
20.85
Hazard Index0.00037
0.0004
0.0006
0.00005
0.00023
0.00166
Chem. Cone. = Arithmetic mean of Christina River concentrations (Table 14)
22591/88C2076/TABLEF2S 07-30-92t2:28pm)/RPT
