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PUBLIC HEALTH ASSESSMENT

ANNIE CREEK MINE TAILINGS
(RELIANCE TAILINGS)
LEADE, LAWRENCE COUNTY, SOUTH DAKOTA


APPENDICES

APPENDIX I

The following section was not available in electronic format for conversion to HTML at the time of preparation of this document. To obtain a hard copy of the document, please contact:

Agency for Toxic Substances and Disease Registry
Division of Health Assessment and Consultation
Attn: Chief, Program Evaluation, Records, and Information Services
Branch, E-56
1600 Clifton Road NE, Atlanta, Georgia 30333


APPENDIX II
CONTAMINANT TABLES

Only contaminants at levels of concern for which there is a completed or potential exposurepathway are discussed in the contaminant tables. For purposes of these estimations, an adult is assumed to weigh 70 kg (150 pounds) and a child is assumed to weigh 10 kg (22 lbs.).

    The data tables include the following abbreviations:
    EMEG= Environmental Media Evaluation Guide
    RMEG= Reference Dose Media Evaluation Guide
    CREG= Cancer Risk Evaluation Guide
    MCL= Maximum Contaminant Level
    ppm= parts per million
    ppb= parts per billion




Table 1.

Contamination in Surface Deposits Prior to Installation of the Waste Rubble Facility
ContaminantMaximum
Concentration
(mg/kg)
Comparison
Value
(C.V.)
(mg/kg)*
C.V.
Source
C.V.
Exceeded
antimony35.50300.00RMEGNO
arsenic4180.000.50CREGYES
mercury0.501000.00EMEGNO
selenium2.201000.00EMEGNO
silver6.104000.00RMEGNO
vanadium30.802000.00EMEGNO
zinc202.00200,000.00RMEGNO
*
Assumes individuals contacting surface deposits were past on-site workers.



Table 2.

Sampling location designations for sediments, soils, surface water, groundwater, and fish.
LocationSurface
Water
Ground
Water
SoilSedimentFish
Base of wasterock
dump
AC-1AC-1T1AC1AC-1;AC-1a aboveRoss Gulch
Down streamof Ross Gulch
(50')
AC-2NoneT2AC2AC-2
Down streamof Lost Camp
(300')
AC-4AC-4T3AC4AC-4
Upstream ofFallsAC-5NoneT6AC5AC-4b
Upstream
of highway14a
(150')
AC-6NoneT7AC6AC-6
Down-streamof
Annie Creek
SC-2None
SC2SC-2




Table 3.

Contaminant Concentrations in Sediments of Annie Creek (mg/kg) (EE/CA 1993).
SubstanceAC1aAC2AC4AC5AC6SC2C.V.c
mg/kg
C.V.
Source
C.V.
Exceeded
AntimonyXbX X60.2XX20.0RMEGYES
Arsenic1272.0933.9748.6944.3913.6331.90.2CREGYES
BariumXX X1,195.0925.9X4000.0 RMEGNO
RubidiumXXX132.3123.3XNONE NONENO
Strontium329.0212.2210.8319.2321.0231.530,000RMEGNO
Zinc140.4131.0145.6140.482.7X20,000RMEGNO
a
See Table 2 for description of sampling location.

b
X means that the substance was detected however, the concentration was in the range ofbackground concentrations.

c
It was assumed that the youngest receptor that would come in contact with the sediments was achild older than 3 years of age.




Table 4.

Arsenic Concentrations in Surface Soil (0-6 inches) (EE/CA 1993)
Sampling
Location
Arsenic
(mg/kg)
C.V.
(mg/kg)
C.V.
Exceeded
Strontium
(mg/kg)
C.V.
(mg/kg)
C.V.
Exceeded
T122.8-2,392 0.2
CREG
YES156.4-
309.8
30,000
RMEG
NO
T2683.4-1,2700.2
CREG
YES144.4-
532.8
30,000
RMEG
NO
T3110.7-2,1300.2
CREG
YES127.8-
226.7
30,000
RMEG
NO
T416.8-2,6790.2
CREG
YES______30,000
RMEG
______
T5424.8-1,794 0.2
CREG
YES424.8-
1794.0
30,000
RMEG
NO
T6852.3-1,3580.2
CREG
YES109.7-
250.5
30,000
RMEG
NO
T753.5-2,1190.2
CREG
YES104.4-
270.0
30,000
RMEG
NO
a
See Table 2 for description of sampling location.




Table 5.

Concentration of dissolved metals in groundwater (1992)
ContaminantAC-1a AC-4AC-6CV and Source
(ug/L)
CV exceeded
Aluminum----------18.4NONE-----
Antimony7-7.4----- -----6
MCL
YES
Arsenic2.89.9-22.914.4-20.3 3
MCL
YES
Beryllium0.3----- -----4
MCL
NO
Cadmium0.9----------7
EMEG
NO
Lead8.1-----0.615
MCL
NO
Manganese4.8-22254.9-6702.3-9.950
RMEG
YES
Mercury0.13-----0.9-0.1420
EMEG
NO
Selenium5.0----------20
EMEG
NO
Nitrate3090-5100----------10,000
MCL
NO
a) See Table 2 for description of sampling location.



Table 6.

Surface Water Sampling Data Prior to 1992
DATE SAMPLEDLOCATION
SAMPLED
CONTAMINANT(S)RANGE
(ug/L)
C.V.C.V.
SOURCE
VALUE
EXCEEDED
April 1981-
Sept. 1991
(Pre-
construction)
Below tailings
in Annie Creek
Arsenic


Aluminum

Manganese

Vanadium

Zinc

10- 2950.0

139.0

39,600.0

10,700.0

45,500.0

10.0


None

200.0

100.0

10,000.0

RMEG


None

RMEG

RMEG

RMEG

YES




YES

YES

YES

Post-constructionBelow tailings
in Annie Creek
Arsenic27- 460.0 10.0 RMEGYES
July 1987-
June 1991

(Pre-construction)

Upstream of confluence ofAnnie Creekwith Spearfish CreekArsenic15- 50.010.0RMEGYES
June 1991
(Post-
construction)
Upstream of confluence ofAnnie Creekwith Spearfish CreekArsenic28.010.0 RMEGYES
Nov. 1990-
Aug. 1991
(Pre-
construction)

(Post-
construction)

Annie Creekbelow LostCamp GulchArsenic




Arsenic

35.0




20.0- 60.0

10.0




10.0

RMEG




RMEG

YES




YES

Nov. 1990-
Aug. 1991
Ross Gulch andLost CampGulch
(Tributary ofAnnie Creek)
Arsenic1.6-
3.5
10.0 RMEGNO
July 1985-
Aug. 1991
Lost CampGulchArsenic<2.0-
29.0
10.0 RMEGYES
April 1988-
Aug. 1991
(Wharf Resources
Data)
Spearfish Creek
(Upstream ofconfluence withAnnie Creek)
Arsenic<2.0- 53.010.0 RMEGYES
United States
Geological
Survey Data
Spearfish
Creek
(Upstream ofconfluence withAnnie andSpearfish Creek
Arsenic<1.0-
1.0
10.0 RMEGNO
Wharf Resources
(April 1988-
August 1991)
Immediatelydownstream ofconfluence ofAnnie and
Spearfish
Creek
Arsenic2.0-
42.0
10.0RMEGYES
Wharf
Resources
(April 1988-
August 1991)
Further
downstream
of confluence
of Annie and
Spearfish
Creek
Arsenic< 1.0-
176.0
10.0RMEGYES
DENRSamples taken
along
Spearfish
Creek
Arsenic< 5.0-
26.0
10.0RMEGYES




Table 7.

Surface Water Quality Data: Annie and Spearfish Creek (1992)
Monitoring
Location
ContaminantFrequencyMinimum-maximum
concentration
(ug/L)
C.V. and
Source
(ug/L)
C.V.
Exceeded
AC1aArsenic6/635.0-76.13.0
EMEG
YES

Nitrate6/62,650-8,85010,000
MCL
NO

Nitrite2/611.0-22.010,000
MCL
NO

Selenium1/66.320
EMEG
NO
AC2 and 4Arsenic12/1223.5-81.63.0
EMEG
YES

Nitrate12/12 2,670-7,78010,000
MCL
NO

Nitrite1/1211.010,000
MCL
NO

Selenium2/122.9-3.820
EMEG
NO
AC5Arsenic6/625.7-45.23.0
EMEG
YES

Nitrate6/62,010-3,85010,000
MCL
NO

Selenium1/62.910,000
MCL
NO
AC6Arsenic6/627.6-41.83.0
EMEG
YES

Nitrate6/61,910-429010,000
MCL
NO

Nitrite1/612.010,000
MCL
NO

Selenium1/62.220
EMEG
NO
SC2Arsenic3/62.3-5.23.0
EMEG
YES

Nitrate5/656.0-2,18010,000
MCL
NO

Nitrite1/612.510,000
MCL
NO

Selenium1/63.020
EMEG
NO
a See Table 2 for description of sampling location.



Table 8.

Range of Arsenic Concentration in Fish Tissue Spearfish and Annie Creek (Wharf Resources, 1990)
LocationConcentration
(mg/kg)
SpeciesAgeSize
Length
(mm)
Weight

Grams

Spearfish-1<0.2Brown
trout
Adult179.0 83.7
Spearfish-1<0.2Brown
trout
Finger-
ling
--
Spearfish-2<0.2Brown
trout
Adult177.8 85.6
Spearfish-2<0.2Brown
trout
Finger-
ling
--
Annie25.0 - 46.0Mountain
sucker
Adult- -
Annie33.0Mountain
sucker
Finger-ling--




Table 9.

Fish Sampling Data (EE/CA, 1992)
Location
Sampled
BiotaFrequency
Detected
Min.-Max.(mg/kg)
wet weight
Arsenic
Min.-Max.(mg/kg)
wet weight
Lead
Min.-Max.(mg/kg)
wet weight
Selenium
AC-1Aamountain sucker4/43.0 - 8.0--------
AC-4mountain sucker15/151.6-34.0--------


1/15----0.8----
AC-4Amountain sucker5/56-26.0--------
AC-4Bmountain sucker5/57-19.0--------
AC-6brook trout5/53-33.0--------
AC-6brook trout (fillet)2/50.6-0.8--------
SC-2Abrook trout (fillet)1/10---------1.0-4.0
AC-6brown trout(whole)7/70.5-18.0--------


1/7

4.0
SC-2brown trout
(whole)
4/102.0-13.0--------
SC-2Abrown trout
(whole)
1/10 --------4.0
a
See Table 2 for description of sampling location.


Appendix III. Pathways

Table 10.

Potential Exposure Pathways
PATHWAY
NAME
SOURCEENVIRON-
MENTAL
MEDIA
POINT
OF
EXPOSURE
ROUTE
OF
EXPOSURE
EXPOSED
POPULATION
TIME
tailingsRelianceTailings (cribdam failure) surface deposits floodplain sediments
and surface soil of
Annie and Spearfish
Creek
ingestion

inhalation

dermal contact

campers,
fishermen,
seasonal
residents
past
present
future
surface
water
Annie and
Spearfish
Creek
tailingsAnnie and SpearfishCreekingestion

dermal
contact

campers,
fishermen,
seasonal residents
past
present
future
groundwatertailings and soilsalong
floodplain ofAnnie Creek
tailingswells along
Spearfish
Creek
ingestioncampers,
fishermen,
seasonal
residents
past
present
sedimentstailingssedimentsAnnie and
Spearfish
Creek
ingestion

dermal
contact

campers,
fishermen,
seasonal
residents
past
present
future
biotaAnnie and
Spearfish
Creek
tailingsAnnie and Spearfish
Creek
ingestioncampers,
fisherman,
seasonal
residents
past
present
future




Table 11.

Eliminated Exposure Pathways
PATHWAY
NAME
SOURCEENVIRON-
MENTAL
MEDIA
POINT
OF
EXPOSURE
ROUTE
OF
EXPOSURE
EXPOSED
POPULATION
TIME
tailingsReliance
Tailings
(crib dam
failure)
surface
deposits
old crib
dam
ingestion
inhalation
dermal
contact
workers,
campers,
fishermen,
seasonal
residents
past
present
tailingsCannonberg
home
surface
deposits
Cannonberg
home
ingestion
inhalation
dermal
contact
Kannonberg
residents
past
present
Spearfish
Municipal
Water
Supply
tailings
and soilsalong
floodplainof AnnieCreek
tailingsmunicipal
water
supply
ingestion
dermal
contact
Spearfish
residents
past
present




Table 12.

Estimated potentially exposed populations
PATHWAY
NAME
SOURCEENVIRON-
MENTAL
MEDIA
POINT
OF
EXPOSURE
ROUTE
OF
EXPOSURE
EXPOSED
POPULATION
TIME
tailingsReliance
Tailings
(crib dam
failure)
surfacedeposits old crib
dam
ingestion

inhalation

dermal contact

campers,
fishermen,
seasonal
residents
(number exposed
unknown)
past

present

tailingsCannonberg
home
surface
deposits
Cannonberg
home
ingestion

inhalation

dermal
contact

Kannonberg
residents
(number exposed
unknown)
past

present

Spearfish
Municipal
Water
Supply
tailings
and soils
along
floodplain
of Annie
Creek
tailingsmunicipal
water
supply
ingestion

dermal
contact

Spearfish
residents
(number exposed
unknown)
past
present


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