Dames & Moore, 1999 - USDA Forest Service

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6.4.1 Evidence of Iron Sulfide Mineral Oxidation Sulfate is the best indicator of oxidation processes because oxidation of iron sulfides (pyrite and pyrrhotite) (Figure 6.3-1) and oxidative dissolution of heavy metal sulfides (Figure 6.3-2) produce secondary iron sulfate salts. Iron is also released when pyrite and pyrrhotite are oxidized; it is only useful as an indicator of iron sulfide oxidation in low pH (Fe). This implies that the seep waters from tailings piles 2 and 3 are comparable to tailings pile 1, but more dilute due to mixing with Railroad Creek. It would be expected that the downstream waters in Railroad Creek (for example, RC-2 would 1ie.exactly on this trend (i.e., Fe increasing with respect to SO4 while Fe/SO.,
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I DAMES & MOORE A DAMES & MOORE GRO
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DAMES & MOORE .. A DAMES 8 MOORE GR
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INTRODUCTION The olden Mine was ope
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The Forest Service implemented site
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Remainder of Year - After the sprin
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' Water Portal Drainage quality mea
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Groundwater discharge from the tail
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Trout An intermediate potential ris
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Windblown Tailings Material The ero
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Lucerne Bar Sampling Additional sed
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3.0 REMEDIAL INVESTIGATION METHODOL
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... 5.3 SURFACE WATER .............
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8.3.3 Surface Water ...............
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Table 4.6-3A - Table. 4.6-4 - Table
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Table 7.1-1 - Table 7.1-5 - Table 7
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Table 7.2.4-2D - Table 7.2.4-3 - Ta
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Figure 4.2-2 - Figure 4.2-3 - Figur
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Figure 5.3-9 - Figure 5.3-10 - Figu
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Figure 6.5-9 - Figure 6.5-10 - Figu
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ACRONYM AND ABBREVIATION GLOSSARY @
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1.0 INTRODUCTION The .Holden Mine i
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sediment reference location" includ
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Volumes 11,111. and IV Section 4.0
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. . . . .................. ........
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2.1 SITE DESCRIPTION The Holden Min
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~:\wpdaca\005\rc~o~iol&n-2~i~-0.dae
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2.5 SUMMARY OF ISSUES OF POTENTIAL
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G:\tupdata\005\repomUloldm-t\riU-O.
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1986 1988 1988 1989 Science Applica
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piemmeter water samples as Service.
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G:\~at~\00SLeporuUIoIden-2~V4.d0~ 1
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SOURCE: Wtem et al., 1992 USGS Chda
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3.0 REMEDIAL INVESTIGATION METHODOL
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wilderness boundary with the intent
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The test pits were excavated utiliz
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were transferred to AutoCAD maps of
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3.2.1 Streamflow Suweys Streamflow
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Site. Samples collected for dissolv
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' chromium, copper, iron, lead, mag
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elevated metals based on field scre
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Wolman pebble counts), occurrence a
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Assessment by Mining Consultant The
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discussions of the 1992 data have n
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VelocityDepth - influences benthic
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To the extent practical, electrosho
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Proportion of individuals as top ca
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provide adequate data to cany forwa
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3.1 1 TASK 11 - DATA EVALUATION 3.1
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3.11.4.2 Two-Dimensional Groundwate
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TABLE 3.0-1 KEY OF SITE FEATURES 8
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TABLE 3.2-1 ANALYTICAL PROGRAM FOR
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TABLE 3.2.2 ANALYnCAL PROORAM FOR G
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TABLE 1.24 ANALYTICAL PROGRAM FOR G
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TABLE 3.24 ANALmCAL PROORAM FOR GRO
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SOURCE: USGS Topographic Map, State
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- Figure 3.0-3 DAMES & MOORE HOLDEN
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Figure 3.1-2 DAMES & MOORE ! RI SOI
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Fill (2) Vent (1) SOURCE: Base map
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SOURCE: Base map information from U
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SOURCE: WIteffi et a/., 1992 USGS C
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DAMES & MOORE Figure 3.4-2 FLOCCULE
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i I i .4 i ,i i i\ i '.\ i \ \ i I
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4.1.2 Site Surface Features Referri
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Hydroelectric Plant Electrical powe
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Water seepage emanates, in the spri
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'7 ~t the Site, approximately mid-w
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system delineated by ditches and re
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Section I-I' and shows the six tunn
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The uppermost stopes within the min
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make up the earth's surface. The st
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silver, and included 34,000 tons of
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strength was determined by Hart Cro
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gravels are variable in thickness a
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wetlands and adjacent to Railroad C
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Several faults have been mapped in
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the coefficient of Friction. Geomor
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The groundwater levels used for the
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Tailings pile 3 is situated near th
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vertical extent of the underground
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from the roof, then evaluating the
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4.2.8 Potential Borrow Source Areas
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for good quality riprap would neces
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May and June, which coincide with t
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Rating Calculations Referring to Ta
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with little or no braiding. Upstrea
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Discharge in Railroad Creek was mon
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model predicted a 100-year flood at
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The data logger, or transducer, was
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submerged at high water levels. Flo
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this, it is possible that the snow
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4.3.5 Basin Average Climatic Water
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surface erosional features provide
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* The D50 equation is obtained from
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effect of a 0.05-foot stage increas
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discussed in' Section 6.8.2 of this
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Observations During Aquatic snorkel
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covers limited portions of the Site
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Bedrock Bedrock underlies the entir
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high as 0.1 to 0.2 feet per foot (F
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Generalized Site-Wide Groundwater R
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4.4.3.5 Groundwater Uses Groundwate
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Reach 1 Since there are no observed
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evaluated on the basis of judgment
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and only started flowing afier seve
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interceptor ditches likely carry pr
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The inflow of groundwater in the fo
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Accuracy The accuracy of the bedroc
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aquifer from the portal drainage, o
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Reference Reaches RC-10. Railroad C
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accessed, including the RM-3 "Dan's
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The banks are relatively nonvegetat
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Ratio of Shredder Functional Feedin
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without scrapers and organisms requ
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present at RC-6, RC-I, RC-3, SFAC-I
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and stumps with bark piles surround
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Tailings Piles A flock of violet-gr
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4.6.3 Threatened or Endangered Spec
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Background Information Grizzly bear
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anadromous populations occurring in
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Creek drainage, they are more commo
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R16E S7). These species include an
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Page 255 and 256:
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TABLE 4.1 -1 KEY OF SITE FEATURES 8
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Pitchblende Sericite Biotite Source
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TABLE 4.2-2a EROSION POTENTIAL RANK
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TABLE 4.2-4 RIP-RAP CONDITION RANKI
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TABLE 4.24 BORROW SOURCE EVALUATION
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TABLE 4.3-1 AVERAGE MONTHLY FLOW PE
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TABLE 4.33 AVERAGE MONTHLY POTENTIA
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TABLE 4.3& SURFACE WATER FIELD PARA
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TABLE 4.3da SURFACE WATER flELD PAR
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TABLE 4.3-5 MONTHLY STREAMFLOW AVER
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NA = not measured NF = no flow S =
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TABLE 4.34b AVERAGE MONTHLY WATER B
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Station RC- I RC-4 RC-9 Copper Cree
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Hydrostratigraphic Unit SoilIFill C
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TABLE 4.4-2 GROUNDWATER FIELD PARAM
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Stream Reach RC-4 to RC-7 RC-7 to R
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TABLE 4.4-6 RESULTS OF OCTOBER 1998
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Seep SP-8 was observed flowing in l
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TABLE 4.448 SEEPAGE FIELD PARAMETER
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TABLE 4.4- SEEPAGE FIELD PARAMETERS
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TABLE 4.4-9 REACH 1 SITE-SPECIFIC W
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Habitat Variable Stream Velocity an
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a TABLE 4.6-2A BENTHIC MACROINVERTE
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TABLE 4.6-2C DISTRIBUTION FIT FOR M
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TABLE 4.6-3 TROUT POPULATION ESTIMA
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Date September 9 September 10 Septe
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TABLE 4.6-6 . HERPETOFAUNA LIKELY T
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North-aspect Slope Sharp-shinned ha
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! I TABLE 4.6-10 MAMMAL SPECIES OBS
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CLIENT PRI VILECED AND CONFIDENTlA
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TABLE 4.6-13 U.S. FOREST SERVICE SU
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TABLE 4.6-15 SURVEY AND MANAGE SPEC
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. . ; SOURCE: Wen et al., 1992 ,, .
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SOURCE: Base mrlp information from
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____------ ---_ SOURCES: Base map i
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SOURCE: Base map information from U
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' Railroad Creek SOURCES: Northwest
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- Approximate f' Plan View Outline
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' DAMES LEGEND - Approximate extent
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- LEGEND Approximate extent of unde
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LEGEND ==s Approximate extent of un
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- E 2f W . E Volcanic Arc Cascadia
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,.' \ /- i \\ \ i i \ \..--A j \ /.
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DMES & MOORE Figure 4.2-6a HOLDEN M
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0.7 D.8 D. 9 E.0 E.l E.2 E.3 E.4 E.
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LEGEND Bedrock F WEST SOURCE: North
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G NORTH .- C u C al Alluvial rn Rew
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File: g:/l7693005mA-4st.slp Glacial
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3.24 3.23 X 3.22 w n 3.21 c .W 3.20
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DAMES & MOORE A aAMES & MOORE GROUP
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SOURCE: Base map inADrmatim from US
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Figure 4.2-21 d HOLDEN MINE SUBSIDE
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* r- Job DAMES & MOORE A DAMES 8 MO
Page 370:
SOURCE: Golder and Associates, 1990
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SOURCE: Base nmp inlbnaficxl from U
Page 376 and 377:
SOURCE: Wters et al., 1992 0 2.5 5
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D. 7 0.8 SOURCES: Base map informaf
Page 380 and 381:
SOURCE: Base map inlbrmatim lrom US
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0.00 I I I I I I April May June Jul
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DAMES & MOORE A DAMES 6. MOORE GROU
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1.80 - 1 .. --.- -- 0.9 1.60 - ! Po
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Note: No data available for June 19
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: g ; . - . .... . -._. ........ .
Page 395 and 396:
LEGEND ..-.-.-.-.- Freewater surfac
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SOURCE: Base map inlbrmation from U
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' D. 7 . 0.8 D. 9 E.0 E. 1 E.2 E.3
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C 0 % iil f 3192 - 3190 - 3188 3186
Page 406:
, -.I p./ ,/' i i .\ i i i -.-. i '
Page 409:
~ob NO. 1769300~019 Infiltration to
Page 412 and 413:
Overland . Flow Areawest of Site Ov
Page 414:
' SOURCE: Base map information from
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D. 9 E.0 E.2 E.3 E.4 0.7 SOURCE: Ba
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...... -.: - - ........... 3790 ,.-
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DRAFT FINAL Remedial Investigation
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(RAOs) section of the Feasibility S
Page 427 and 428:
Also included in WAC 173-201A are p
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MTCA defines the methods and descri
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The historical data for samples col
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groundwater was encountered at appr
Page 435 and 436:
were below MTCA levels with the fol
Page 437 and 438:
sampling rounds, the field filter b
Page 439 and 440:
Department of Ecology samples colle
Page 441 and 442:
data sets where the total value was
Page 443 and 444:
5.3.1.3 Summary Based on the statis
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adjacent to the Site were not neces
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RC-4 is located downstream of the p
Page 449 and 450:
RC-2 is'located immediately downstr
Page 451 and 452:
In May 1997, copper (21.5 pg5) in t
Page 453 and 454:
Data collected from upstream statio
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of water exiting from the portal. S
Page 457 and 458:
5.3.4.3 Historical Portal Drainage
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parameters did not indicate seasona
Page 461 and 462:
The portal drainage was sampled at
Page 463 and 464:
and sodium were not evaluated as th
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preliminary report 1997). Sample lo
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time frame. The concentration of ea
Page 469 and 470:
5.4.2.4 Waste Rock Piies Seep sampl
Page 471 and 472:
Seep data were compared to MTCA gro
Page 473 and 474:
The data for seeps associated with
Page 475 and 476:
in wells TP1- 1A. TPl-2A, TPI-3A, T
Page 477 and 478:
5.4.2.8 Lucerne Well The well at th
Page 479 and 480:
Ninemile Creek) with a correspondin
Page 482 and 483:
During the mine reclamation activit
Page 484 and 485:
TABLE 5.0-1 KM OF SITE FEATURES 8 M
Page 486 and 487:
Page 488 and 489:
Page 490 and 491:
TABLE 5.2-1 SUMMARY OF RI SOlL ANAL
Page 492 and 493:
TABLE 5.2-1 SUMMARY OF Rl SOIL ANAL
Page 494 and 495:
TABLE 5.23 SUMMARY OF HISTORICAL SO
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TABLE 5.24 SUMMARY OF HISTORICAL TA
Page 498 and 499:
TABLE 5.2-5 SUMMARY OF RI TAILINGS
Page 500 and 501:
TABLE 5.2-6 POTENTIAL COMPOUNDS OF
Page 502 and 503:
TABLE 5.51 SURFACE WATER AREA BACKG
Page 504 and 505:
. . .. . . . .....-a .---.-I--u,. C
Page 506 and 507:
TABLE 5.3-2 Aluminum Data Points, B
Page 508 and 509:
TABLE 5.34 Beryllium Data Points. B
Page 510 and 511:
TABLE 5.3-6 Chromium Data Points. B
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TABLE 5.34 lron Data Points. Backgr
Page 514 and 515:
TABLE 5.3-10 Magnesium Data Points,
Page 516 and 517:
TABLE 5.3-12 Selenium Data Points,
Page 518 and 519:
TABLE 5.3-14 Zinc Data Points, Back
Page 520 and 521:
TABLE 5.3-16 Statistical Summary -F
Page 522 and 523:
TABLE 5.3-18 SUMMARY OF RI SURFACE
Page 524 and 525:
h:\holden\drafi final nrpt\SS\TaMes
Page 526 and 527:
TmLE 5.240 STATION RG2 AND P ROXW S
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TABLE 5.3-20 h:\holden\draft final
Page 531:
TPBLE 5.3-21 STATION RCJ AHD PROXBS
Page 534 and 535:
TABLE 5.3-21 SUMMARY OF RI WATER QU
Page 536 and 537:
TABLE 5.3-24 SUMMARY OF SURFACE WAT
Page 538 and 539:
h V~olden\draR final nrpt\S-5\Table
Page 540 and 541:
Page 542 and 543:
Page 544 and 545:
TABLE 5.3-28 SUMMARY OF RI WATER QU
Page 546 and 547:
TABLE 5.529 SUMMARY OF RI WATER QUA
Page 548 and 549:
TABLE 5.3-30 SUMMARY OF RI PORTAL D
Page 550 and 551:
TABLE 5.W1 SUMMPRY OF HISTORICAL WA
Page 552:
TABLE 5.592 SUMMARY OF RI WATER QUA
Page 556 and 557:
TABLE 5.3-35 TABLE 5.355 SUMMARY OF
Page 558 and 559:
TABLE 5.358 SUMMARY OF WATER QUALIT
Page 560 and 561:
n.\holden\draR Rnal r1rpt\S-5\tabIe
Page 562 and 563:
TABLE 5.4-1 SUMMARY OF RI GROUNDWAT
Page 564 and 565:
TABLE 5.4-1 SUMMARY OF Rl GROUNDWAT
Page 566 and 567:
TABLE 5.4-2 SUMMARY OF RI SEEPAGE W
Page 568 and 569:
TABLE 5.4-2 SUMMARY OF R1 SEEPAGE W
Page 570 and 571:
TABLE 5.4-2 SUMHAW OF RI SEEPAGE WA
Page 572 and 573:
TABLE 5.43 HlSTORlCAL SUMMARY OF GR
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TABLE 5.4-4 HISTORICAL SUMMARY OF S
Page 576 and 577:
TABLE 5.44 HISTORICAL SUMMARY OF SE
Page 578 and 579:
TABLE 5.44 HISTORICAL SUMMARY OF MI
Page 580 and 581:
TABLE 5.5-1 SUMWRY Of HISlORlcbl DA
Page 582 and 583:
TABLE 5.5-2 SUMMARY OF FALL 1998 SE
Page 584 and 585:
TABLE 5.61 SUWAARY OF 1997 FERRICRE
Page 586 and 587:
D.7 D.8 SOURCE: Base map informatio
Page 588:
Scale in Feet Irene Lode Figure 5.2
Page 593 and 594:
i i Wilderness i I i I i I P.J i i
Page 595 and 596:
Date -+-- Discharge (cfs) 4'- ~lumi
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DAMES & MOORE A oAW 6 MooRE GROUP C
Page 599 and 600:
-+- pischarge (cfs) I t hardness 1
Page 601 and 602:
-I Job NO. 17693-005-01 9 .----. Ma
Page 603 and 604:
160 -.- May-Zinc --- September-Zinc
Page 606: SOURCE: Base map infomtim horn USFS
Page 609: D.8 D. 9 E.0 ..... E.2 E.3 E.4 a D.
Page 613 and 614: SOURCE. Base map information frwn U
Page 620: SOURCE: Base map inlomtim frwn USFS
Page 631: SOURCE: Base map inlbrmatim from US
Page 636 and 637: Approximate Scale in Feet DAMES & M
Page 638 and 639: LEGEND -- -A O Ferr~crete, floccule
Page 640 and 641: Subsection 6.4 presents general Sit
Page 642 and 643: .LXOdW RI WNId W@Md 11:V:6661 'LZ A
Page 644 and 645: snowmelt on the adjacent valley slo
Page 646 and 647: 1XCH3d Ill I V N U ~ I l:O!6661 b ~
Page 648 and 649: 63.1.1 Sulfide Mineral Oxidation Th
Page 650 and 651: a IXOdIM Ill WW UVXCI%M 11:P!6661 '
Page 652 and 653: Co-precipitation. Sorption. 633.1 D
Page 654 and 655: Eh Control on Preeipitation/Dissoln
Page 658 and 659: L X m IX WNU UVXdWd I l:V!6661 'LZ
Page 660 and 661: uffering by other magnesium-based m
Page 662 and 663: The geochemistry of Site waters is
Page 664 and 665: Water Flow . The mine drainage area
Page 666 and 667: prediction. Therefore, inspection o
Page 668 and 669: @ I'fOdM IX WNId UVXd.r(d 11:*!6661
Page 670 and 671: .moj iq%!m saieuoqm:, laddo:, ietp
Page 672 and 673: the vicinity with differences proba
Page 674 and 675: pathway for water to infiltrate int
Page 676 and 677: The chemistry of these monitoring w
Page 678 and 679: 'z-38 ol aAye1a.i suoy!pum MOU a~!l
Page 680 and 681: concentrations, but statistically t
Page 682 and 683: lXOd3X n! WNU .LWW%Vd I I:O:6661 'L
Page 684 and 685: Infiltration of water from the port
Page 686 and 687: 3, indicating buffering by iron hyd
Page 688 and 689: control and buffering by alumino-si
Page 690 and 691: 6.10 CONCLUSIONS Based on the resul
Page 692 and 693: TABLE 6.0-1 KEY OF SITE FEATURES 8
Page 698 and 699: CLIENT PRIVILEGED AND CONFIDEhTTBL
Page 701 and 702: TABLE 6.6-3 LOADING CALCULATIONS -
Page 703 and 704: i SOURCE: Walten et al., 1992 USGS
Page 705: NOTE: This cross section is general
Page 708 and 709:
; SOURCE: Willten et al.. 1992 f ..
Page 710 and 711:
SOURCE: SRK Summer \ Fall Winter Sp
Page 712 and 713:
SOURCE: SRK Oxidant I H20 (transpor
Page 715 and 716:
SOURCE: Ganels an Christ, 1965 I A
Page 718 and 719:
DAMES & MOORE A DAMES d MOORE GROUP
Page 720 and 721:
DAMES & MOORE A DAMES a MOORE GROUP
Page 722 and 723:
' Tailings Pile 1 + Tailings Pile 2
Page 724 and 725:
DAMES & MOORE A DAMES 6 MOORE GROUP
Page 726:
DAMES & MOORE o RC 1 RC 4 A RC7 x R
Page 729 and 730:
,. ._ . ... . . _ .....,..,... " ..
Page 731 and 732:
a 0) - E V - DAMES & MOORE A DAMES
Page 733 and 734:
- .- a 9 i C 0 SOURCES: SRK (Bucksk
Page 735 and 736:
Upslope Surface Water Runm and - Di
Page 737:
SOURCE: SRK $ Air Flow 8-b Water Fl
Page 740 and 741:
0 Acidity Addition IXMES & MOORE Tr
Page 742 and 743:
A RC7 1 0 RC5 , ' Tailings Pile 1 +
Page 745 and 746:
DAMES & MOORE Surface Water Runon a
Page 747 and 748:
Note: Someflow lost into plane of f
Page 749 and 750:
Notes: Runon and Direct Precipitati
Page 751 and 752:
Approximate Scale in Feet NOTES: NS
Page 753 and 754:
SOURCE: SRK - - L DAMES & MOORE A D
Page 755 and 756:
SOURCE: SRK 1000000 100000 10 - --
Page 757 and 758:
Subsection 6.4 presents general Sit
Page 759 and 760:
Other geologic units in the deposit
Page 761 and 762:
snowmelt on the adjacent valley slo
Page 763 and 764:
calcite were being dissolved, one i
Page 765 and 766:
63.1.1 Sulfide Mineral Oxidation a,
Page 767 and 768:
The acid in the water can be remove
Page 769 and 770:
a Co-precipitation. a Sorption. 633
Page 771 and 772:
Eh Control on Precipitatioa/Dissolu
Page 773 and 774:
Weathering of iron-bearing sulfide
Page 775 and 776:
zinc sulfate salts. Zinc and sulfat
Page 777 and 778:
uff~ng by other magnesium-based min
Page 779 and 780:
The geochemistry of Site waters is
Page 781 and 782:
. . .. . Water Flow The mine draina
Page 783 and 784:
prediction. Therefore, inspection o
Page 785 and 786:
In the fall, groundwater flow is re
Page 787 and 788:
One sample (W-1, May 2, 1998) of th
Page 789 and 790:
the vicinity with differences proba
Page 791 and 792:
pathway for water to infiltrate int
Page 793 and 794:
The chemistry of these monitoring w
Page 795 and 796:
the surface waters. Some of the dis
Page 797 and 798:
concentrations, but statistically t
Page 799 and 800:
' iron added is precipitated and is
Page 801 and 802:
Infiltration of water from the port
Page 803 and 804:
3, indicating buffering by iron hyd
Page 805 and 806:
Upstream of the tailings piles, sig
Page 807 and 808:
Source controls reflect the differe
Page 809 and 810:
,,, .a Lucerne TAELE 6.0-1 KEY OF S
Page 811 and 812:
Page 813 and 814:
Page 815 and 816:
CLIENT PRIVrLEGED AND CONFIDENTfiL
Page 817 and 818:
Tabhu-2 ~C.~-R.~Cm15SaptnnbsrlW7 no
Page 819 and 820:
Table 6.64 Lo8dlng C.lculatiom - Ad
Page 821:
Job NO. 17693-005-019 Draft Final R
Page 825 and 826:
SOURCE: Wters et al., 1992 ...; ...
Page 827 and 828:
SOURCE: SRK Oxidant DAMES & MOORE A
Page 829 and 830:
SOURCE: SRK Summer Fall Winter (rai
Page 832:
I SOURCE: Gamls a& Chfist, 1965 P A
Page 836 and 837:
0 RC 1 RC4 A RC7 X RC2 0 RC5 Tailin
Page 838 and 839:
0 RC 1 RC4 A RC7 X RC2 0 RC5 Tailin
Page 840 and 841:
1 Sulfate (mrnoleaR) Tailings Pile
Page 842 and 843:
0 RC 1 '0 RC4 A RC7 X RC2 0 RC5 + T
Page 845 and 846:
ORC 1 ORC 4 ARC 7 XRC 2 ORC 5 Taili
Page 847 and 848:
ORC 1 ORC 4 ARC7 XRC 2 ORC5 Tailing
Page 849 and 850:
SOURCES: SRK H Flushing Reduced Som
Page 852 and 853:
t upslope Surface Water Rum and Dir
Page 854 and 855:
SOURCE: SRK Summer $ Air Flow ~-@ W
Page 856 and 857:
D. 7 0.8 D. 9 E.0 E. 1 E.2 E.3 E.4
Page 858 and 859:
0 RC 1 0 RC4 A RC7 1 X RC2 / 0 RC5
Page 861 and 862:
1 Surface Water Runon and Direct Pr
Page 863 and 864:
Infiltration of Snowmelt and Interm
Page 866:
Notes: Surface Water. Runon and Dir
Page 870 and 871:
DAMES & MOORE A DAMES 6 MOORE GROUP
Page 872 and 873:
SOURCE: SRK 10 I I I I I r I Figure
Page 874 and 875:
effects. The same constituent may e
Page 876 and 877:
Surface Soil For the purposes of th
Page 878 and 879:
7.1.2.2 Statistical Analysis of Dat
Page 880 and 881:
The completeness of potential expos
Page 882 and 883:
Sources The mining related waste co
Page 884 and 885:
' Ingestion of Fish. Some ingestion
Page 886 and 887:
Frequency of Detection If a constit
Page 888 and 889:
corresponding grouping. The Method
Page 890 and 891:
' Wilderness Boundary Two soil samp
Page 892 and 893:
did not have health-based MTCA Meth
Page 894 and 895:
Railroad Creek Adiacent to Site The
Page 896 and 897:
7.1.4 Site-specific Human Health Ri
Page 898 and 899:
USEPA's Weight-of-Evidence Carcinog
Page 900 and 901:
ingestion of Water Screening criter
Page 902 and 903:
Inhalation of Pdculates BR = Breath
Page 904 and 905:
Surface Soil Cancer risks and nonca
Page 906 and 907:
child's daily ingestion rate (1 lit
Page 908 and 909:
Lead was present in the maintenance
Page 910 and 911:
evaluated by screening constituent
Page 912 and 913:
stressors present to the values res
Page 914 and 915:
The most visible large game animals
Page 916 and 917:
Concentrations of PCOCs in other me
Page 918 and 919:
7.2.2.6 Conceptual Site Model The C
Page 920 and 921:
Aquatic Habitats Surface Water The
Page 922 and 923:
arely,,(2) occasionally, and (3) fr
Page 924 and 925:
it was screened against soil criter
Page 926 and 927:
Small Mammals TRVs for representati
Page 928 and 929:
The food ingestion rate was estimat
Page 930 and 931:
The food ingestion rate for placent
Page 932 and 933:
- Mink Mink are carnivores which fe
Page 934 and 935:
7.2.4.1 Risk Cbaracterization for W
Page 936 and 937:
were no more toxic than sediments c
Page 938 and 939:
- Plants Hazard quotients for plant
Page 940 and 941:
deer mice fed only on plants growin
Page 942 and 943:
Robins drink only the UCL concentra
Page 944 and 945:
Finally, the analysis performed for
Page 946 and 947:
equilibrium partitioning have been
Page 948 and 949:
• Trout may possibly be at risk d
Page 950 and 951:
TABLE 7.0-1 KEY OF SITE FEATURES ME
Page 952 and 953:
Page 954 and 955:
Page 956 and 957:
TABLE 7.q-A OFF-SITE SOIL CHEMICAL
Page 958 and 959:
TABLE 7.14 STATISTICAL ANALYSIS AND
Page 960 and 961:
TABLE 7.1C STATISTICAL NALUAnON AND
Page 962 and 963:
TABLE 7.1-C STATISTICAL EVALUATION
Page 964 and 965:
TABLE 7.14 COMPARISON OF SEDIMENTAR
Page 966 and 967:
7 TABLE 7.14) COMPARISON OF SEDIMEN
Page 968 and 969:
-hluo sanlm pawpp uo paseq s! ue!pa
Page 970 and 971:
H Wolden\draR hnal rirpt\S-i\HhraUa
Page 972 and 973:
H.Wolden\drafl hnal nrpt\S_7WhraUab
Page 974 and 975:
TABLE 7.1-F STATISTICAL ANALYSIS AN
Page 977 and 978:
Page 979 and 980:
TABLE 7.1-F STATISTICAL ANALYSIS AN
Page 982 and 983:
H-Wolden\draR final rirptS-7\Hhra\T
Page 984 and 985:
H.\Holden\drafl final rirpt\S-7Whra
Page 986 and 987:
Page 988 and 989:
TABLE 7.1H STATISTICAL ANALYSIS AND
Page 990 and 991:
TABLE 7.144 STATISTICAL ANALYSIS AN
Page 992 and 993:
Page 994 and 995:
TABLE 7.14 STATlSnCN ANNYSS AND COM
Page 996 and 997:
Page 998 and 999:
TABLE 7.1 -K MEAN METAL CONCENTRATI
Page 1000:
TABLE 7.1-2 METHOD A LEVELS USED IN
Page 1003 and 1004:
TABLE 7.1-5 CARCINOGEN CLASSIFICATI
Page 1005 and 1006:
TABLE 7.1-7 HUMAN HEALTH SCREENING
Page 1007 and 1008:
TABLE 7.1-9 HUMAN HEALTH XREENING O
Page 1009:
Page 1012 and 1013:
TABLE 7.1-14 HUMAN HEALTH SCREENlNG
Page 1014 and 1015:
TABLE 7.1-16 HUWlAN HEALTH SCREENIN
Page 1016 and 1017:
. . . . -- m3zri .. ........ . . .
Page 1018 and 1019:
TABLE 7.1-20 HUMAN HEALM SCREENING
Page 1020 and 1021:
Page 1022 and 1023:
Page 1024 and 1025:
Page 1026 and 1027:
Page 1028 and 1029:
*-. - -. -. -- .- ..~ -- .- .- . ..
Page 1031 and 1032:
Page 1033 and 1034:
TABLE 7.135 HUMAN HEALTH SCREENING
Page 1035 and 1036:
. TABLE 7.1 -37 EXPOSURE CONCENTRAT
Page 1037 and 1038:
TABLE 7.1-JS EXPOSURE FACTORS USED
Page 1039 and 1040:
TABLE 7.1-41 COMPARISON OF SITESPEC
Page 1041 and 1042:
TABLE 7.1-43 EVALUATION OF CUMULATI
Page 1043 and 1044:
Constituent Beryllium Cadmium Acute
Page 1045 and 1046:
Constituent Lead Manganese Molybden
Page 1047 and 1048:
Constituent Diesel Fuel, Light Weig
Page 1049 and 1050:
TABLE 7.2.2-1 A STATISTICAL ANALYSI
Page 1051 and 1052:
TABLE 7.2.2-181 STATISTICAL ANALYSI
Page 1053 and 1054:
U . PersMler was ambfzed fa. W rd d
Page 1055 and 1056:
TABLE 7.2.2-1C COMPARISON OF SEDIME
Page 1057 and 1058:
TABLE 7.2.2-lC COMPARISON OF SEDIME
Page 1059 and 1060:
TABLE 7.2.2-1E STATISTICAL ANALYSIS
Page 1061 and 1062:
TABLE 7.2.2-1F STAllSTlCAL ANALYSIS
Page 1063 and 1064:
TABLE 7.2.2-1F STATISTICAL ANALYSIS
Page 1065 and 1066:
TABLE 7.2.2-IF STAnSTICAL ANALYSIS
Page 1067 and 1068:
TABLE 7.2.2-IF STATISTICAL ANALYSIS
Page 1069 and 1070:
TABLE 7.22-lG STATISTICAL ANALYSIS
Page 1071 and 1072:
TABLE 7.2.2-1 H STATISTICAL ANALYSI
Page 1073 and 1074:
TABLE 7.2.2-1H STATISTICAL ANALYSIS
Page 1075 and 1076:
Page 1077 and 1078:
Page 1079 and 1080:
Cascades frog Ram cascadoe TABLE 7.
Page 1081 and 1082:
TABLE 7.2.2-3 TOXICITY BENCHMARKS F
Page 1083 and 1084:
italics - highest value 1 - adjuste
Page 1085 and 1086:
TABLE 7.2.3-2A SCREENING OF COCS FO
Page 1087 and 1088:
italics- highes~ value TABLE 7.2.3-
Page 1089 and 1090:
I TABLE 7.23-4A TOXICITY REFERENCE
Page 1091 and 1092:
metal Cadmium Copper Lead Zinc TABL
Page 1093 and 1094:
TABLE 7.2.3-7 DOSES TO AMERICAN DIP
Page 1095 and 1096:
TABLE 7.2.3-9 DOSES TO MINK CONSUMI
Page 1097 and 1098:
Flesh Soil Plants G:\wpdata\M)S\rep
Page 1099 and 1100:
TABLE 7.2.3-13 DOSES TO DEER MICE H
Page 1101 and 1102:
a H:\Holden\Drafl TABLE 7.2.3-15 DO
Page 1103 and 1104:
TABLE 7.2.3-17 DOSES TO AMERICAN RO
Page 1105 and 1106:
' TABLE 7.2.4-la HAZARD QUOTIENTS F
Page 1107 and 1108:
TABLE 7.2.4-2C HAZARD QUOTIENTS FOR
Page 1109 and 1110:
TABLE 7.2.4-3 HAZARD QUOTIENTS FOR
Page 1111 and 1112:
Page 1113 and 1114:
TABLE 7.2.4-7a HAZARD QUOTIENTS FOR
Page 1115 and 1116:
Page 1117 and 1118:
TABLE 7.2.4-11a HAZARD QUOTIENTS FO
Page 1119 and 1120:
TABLE 7.2.4-13a HAZARD QUOTIENTS FO
Page 1121 and 1122:
~ob NO. 17693-005-019 Holden Mine R
Page 1123 and 1124:
DNWS & MOORE A DAMES h MOORE GROUP
Page 1125 and 1126:
SOURCE RELEASE EXPOSURE MECHANISM M
Page 1127 and 1128:
Figure 7.2-1 Conceptual Site Model
Page 1129 and 1130:
which includes protected natural re
Page 1131 and 1132:
The dense glacial till overlying th
Page 1133 and 1134:
Tailings pile 1 was utilized as a m
Page 1135 and 1136:
8.2.3 Surface Water 8.2.3.1 Railroa
Page 1137 and 1138:
covered with flocculent. The floccu
Page 1139 and 1140:
It is likely that much of the water
Page 1141 and 1142:
8.2.3.7 Aquatic Reference Reaches T
Page 1143 and 1144:
Mill. Mine Sup~ort and Waste Rock P
Page 1145 and 1146:
maintenance building, which also ho
Page 1147 and 1148:
The calculated total numbers of fis
Page 1149 and 1150:
Reference Reaches - Upstream Railro
Page 1151 and 1152:
apparent lack of aquatic toxicity a
Page 1153 and 1154:
8.3 SITE CONTAMINANT CHARACTERIZATI
Page 1155 and 1156:
25 pprn hardness as this is the min
Page 1157 and 1158:
Additionally, the data at P-1 were
Page 1159 and 1160:
8.3.5.2 Lucerne Bar & Stehekin Rive
Page 1161 and 1162:
Comparison of sulfate and aluminum
Page 1163 and 1164:
The abandoned Railroad Creek stream
Page 1165 and 1166:
groundwater levels.are highest in t
Page 1167 and 1168:
SOURCE: USGS Topographic Map. State
Page 1169 and 1170:
DAMES & MOORE A DAMEs a MWRE GROUP
Page 1171 and 1172:
Job NO. 17693-005-019 Figure 8.1 -5
Page 1173 and 1174:
5 SOURCE:! Wters eta/., 1992 i USGS
Page 1175 and 1176:
9.0 CONCLUSIONS AND RECOMMENDATIONS
Page 1177 and 1178:
9.2.4 Component Inflow Sources and
Page 1179 and 1180:
areas and loading to Railroad Creek
Page 1181 and 1182:
At approximately 3 miles downstream
Page 1183 and 1184:
case scenario; however, suitable ea
Page 1185 and 1186:
9.3.4 Maintenance Yard 9.3.5 Lagoon
Page 1187:
: SOURCE: Wters eta/., 1992 _...___
Page 1190 and 1191:
i ,./' i - Creek /.- i i i '. . i '
Page 1192 and 1193:
I 11.0 REFERENCES A&L'Mid West Labo
Page 1194 and 1195:
Brown, H.A., R.B. Bury, D.M. Darda,
Page 1196 and 1197:
e ' Dames & Moore, 1997f. Phase I R
Page 1198 and 1199:
Hall, E.R. and K.R. Kelson. 1959. T
Page 1200 and 1201:
Kilburn, J.E. & S.J. Sutley. 1997.
Page 1202 and 1203:
Mitchell, J.L. 1961. Mink Movements
Page 1204 and 1205:
Peven, C.M.1989. Lake Chelan Spawni
Page 1206 and 1207:
U.S. Department of Interior, Bureau
Page 1208 and 1209:
P a Eastside U.S. Geological Survey
Page 1210 and 1211:
Washington State Department of Ecol
Page 1213 and 1214:
, DAMES DRAFT FINAL Remedial Invest
Page 1215 and 1216:
I June 15,1998 Field QC Samples, Ma
Page 1217 and 1218:
INORGANICS ANALYSIS DATA SHEET Samp
Page 1219 and 1220:
Page 1221 and 1222:
I Date: /a SW-846. MEMORANDUM To: F
Page 1223 and 1224:
June 15, 1998 Surface Water, May 19
Page 1225 and 1226:
Page 1227 and 1228:
Page 1229 and 1230:
INORQANICS ANALYSIS DATA SHEET TOTA
Page 1231 and 1232:
INORGANICS ANALYSIS DATA SHEET TOTA
Page 1233 and 1234:
Page 1235 and 1236:
Page 1237 and 1238:
INORGANICS'ANALYSIS DATA SHEET Samp
Page 1239 and 1240:
Page 1241 and 1242:
Page 1243 and 1244:
Page 1245 and 1246:
Page 1247 and 1248:
Page 1249 and 1250:
Page 1251 and 1252:
Page 1253 and 1254:
Page 1255 and 1256:
Page 1257 and 1258:
cli INORGANICS ANALYSIS DATA SHEET
Page 1259 and 1260:
I@ '.J INORGANICS ANALYSIS DATA SHE
Page 1261 and 1262:
Page 1263 and 1264:
Page 1265 and 1266:
I INORGANICS ANALYSIS DATA SHEET Sa
Page 1267 and 1268:
Page 1269 and 1270:
Page 1271 and 1272:
Page 1273 and 1274:
INORGANICS ANALYSIS DATA SHEET @. S
Page 1275 and 1276:
Sample No: RC-7 Lab Sample ID: W219
Page 1277 and 1278:
Pinal Report Laboratory Analyeia of
Page 1279 and 1280:
Final Report Laboratory Analysis of
Page 1281 and 1282:
@ QA Report - Replicate Analysis QC
Page 1283 and 1284:
I QA Report - Laboratory Control Sa
Page 1285 and 1286:
TOTAL GASOLINE RANGE HYDROCARBONS W
Page 1287 and 1288:
TOTAL DIESEL RANGE HYDROCARBONS WA
Page 1289 and 1290:
I CHAIN-OF-CUSTODY RECORD i 500 Mar
Page 1291 and 1292:
CHAIN-OF-CUSTODY RECORD WHITE COPY-
Page 1293 and 1294:
Final Report Laboratory Analyeie of
Page 1295 and 1296:
QA Report - Method Blank Analysis Q
Page 1297 and 1298:
QA Report - Matrix Spike/Matrix Spi
Page 1299 and 1300:
QA Report - Standard Reference Mate
Page 1301 and 1302:
@ TOTAL GASOLINE RANGE HYDROCARBONS
Page 1303 and 1304:
TOTAL DIBSEL RANGB HYDROCARBONS WA
Page 1305 and 1306:
CHAIN-OF-CUSTODY RECORD WHITE COPY-
Page 1307 and 1308:
@ MEMORANDUM .-. Date: To: From: Su
Page 1309 and 1310:
June 8, 1998 Seep and Portal, May 1
Page 1311 and 1312:
* Page June 8.1998 Seep &d Portal,
Page 1313 and 1314:
INORGANICS ANALYSIS DATA SHEET DISS
Page 1315 and 1316:
INORGANICS ANALYSIS DATA SHEET DISS
Page 1317 and 1318:
Page 1319 and 1320:
Page 1321 and 1322:
Page 1323 and 1324:
Page 1325 and 1326:
Page 1327 and 1328:
Page 1329 and 1330:
Page 1331 and 1332:
Page 1333 and 1334:
Page 1335 and 1336:
Page 1337 and 1338:
Page 1339 and 1340:
Page 1341 and 1342:
Page 1343 and 1344:
Final Report ~aborato-~ Anelyeis of
Page 1345 and 1346:
Final Re~ort - Laboratory L?slysie
Page 1347 and 1348:
Page 1349 and 1350:
QA Report - Matrix.Spike/Matrix Spi
Page 1351 and 1352:
QA Report - Standard Reference Mate
Page 1353 and 1354:
QA Report - Replicate Analyeis QC R
Page 1355 and 1356:
QA Report - Laboratory Control Samp
Page 1357 and 1358:
Page 1359 and 1360:
.. . . . L - , ..- .U ,- Y a 5 ~bm
Page 1361 and 1362:
June 8,1998 Equipment Blank, May 19
Page 1363 and 1364:
Page 1365 and 1366:
METALS ANALYSIS DATA SHEET TOTAL ME
Page 1367 and 1368:
i TMY !-, 7'. O CHAIN-OF-CUSTODY RE
Page 1369 and 1370:
June 15,1998 Low Level Lead, May 19
Page 1371 and 1372:
Sample Results for Dames and Moore
Page 1373 and 1374:
S& -sshc.-rx rotor. n; a 57,m 11‘
Page 1375 and 1376:
Frontier Geosciences Inc. 414 Ponti
Page 1377 and 1378:
June 25, 1998 Ventilator Portal, Ju
Page 1379 and 1380:
Page 1381 and 1382:
Page 1383 and 1384:
INORGANICS ANALYSIS DATA SHEET -TOT
Page 1385 and 1386:
- Date: December 11, 1998 , . . , ,
Page 1387 and 1388:
December 1 1, 1998 Sediment Data, F
Page 1389 and 1390:
, . ' December 1 1, 1998 Sediment D
Page 1391 and 1392:
INORQANICS ANALYSIS DATA SHEET Samp
Page 1393 and 1394:
Page 1395 and 1396:
Page 1397 and 1398:
INORGANICS ANALYSIS DATA SHBBT Samp
Page 1399 and 1400:
INORGANICS ANALYSIS DATA SHEET samp
Page 1401 and 1402:
INORGANICS ANALYSIS DATA SHEET - TO
Page 1403 and 1404:
INOROANICS ANALYSIS DATA SHEET Samp
Page 1405 and 1406:
INORGANICS ANALYSIS DATA SHEET ' Sa
Page 1407 and 1408:
Page 1409 and 1410:
Page 1411 and 1412:
Page 1413 and 1414:
Page 1415 and 1416:
Page 1417 and 1418:
Page 1419 and 1420:
Pinal Report Laboratory Analyeie of
Page 1421 and 1422:
@ Final Report Laboratory Analysie
Page 1423 and 1424:
Final Report Laboratory Analyeie of
Page 1425 and 1426:
Final Report ~aborato-~ Analyeie of
Page 1427 and 1428:
Final Report Laboratory Analyeis of
Page 1429 and 1430:
Final Report Laboratory Analysie of
Page 1431 and 1432:
Final Report Laboratory Analyeis of
Page 1433 and 1434:
Page 1435 and 1436:
QA Report - Replicate Analysis QC R
Page 1437 and 1438:
QA Report - ~ab'oratory Control Sam
Page 1439 and 1440:
a Rosa Environmental & Geotechnical
Page 1441 and 1442:
!q Rosa Environmental Ge6.- -. lcal
Page 1443 and 1444:
i - - ROSA ENVIRONMENTAL & GEOTECHN
Page 1445 and 1446:
- ROSA ENVIRONMENTAL & GEOTECHNICAL
Page 1447 and 1448:
ROSA ENVIRONMENTAL & GEOTECHNICAL L
Page 1449 and 1450:
Page 1451 and 1452:
I I PSEP APPARENT GRAIN SlZE DISTRI
Page 1453 and 1454:
I ROSA ENVIRONMENTAL & GEOTECHNICAL
Page 1455 and 1456:
L --- ROSA ENVIRONMENTAL 8 GEOTECHN
Page 1457 and 1458:
Page 1459 and 1460:
. ROSA ENVIRONMENTAL & GEOTECHNICAL
Page 1461 and 1462:
ROSA ENVIRONMENTAL 1~ GEOTECHNICAL
Page 1463 and 1464:
Field Sample I Chain of Custody Rec
Page 1465 and 1466:
Field Sample I Chain of Custody Rec
Page 1467 and 1468:
MEMORANDUM Date: July 2,1999 To: Ri
Page 1469 and 1470:
INORQANICS ANALYSIS DATA'SHBET Samp
Page 1471 and 1472:
INORQANICS ANALYSIS DATA SHEET Samp
Page 1473 and 1474:
Decc~nbcr 8, 1998 Background Soil D
Page 1475 and 1476:
December 8, 1998 Background Soil Da
Page 1477 and 1478:
Page 1479 and 1480:
Page 1481 and 1482:
Page 1483 and 1484:
Page 1485 and 1486:
Page 1487 and 1488:
Page 1489 and 1490:
INORGANIC ANALYSIS DATA SHEET TOTAL
Page 1491 and 1492:
Page 1493 and 1494:
Page 1495 and 1496:
Page 1497 and 1498:
Page 1499 and 1500:
Page 1501 and 1502:
Page 1503:
Page 1506 and 1507:
MEMORANDUM @ Date: December 8. 1998
Page 1508 and 1509:
Dcccmbcr 8, 1998 Lagoon Soil Samplc
Page 1510 and 1511:
Page 1512 and 1513:
Page 1514 and 1515:
- INORGANICS ANALYSIS DATA SHEET Sa
Page 1516 and 1517:
Page 1518 and 1519:
. INORGANICS ANALYSIS DATA SHEET Sa
Page 1520 and 1521:
Page 1522 and 1523:
INORGANIC ANALYSIS DATA SHEET TOTAL
Page 1524 and 1525:
TOTAL DIESEL RANGE HYDROCARBONS WA
Page 1526 and 1527:
TOTAL DIESEL RANGE HYDROCARBONS Lab
Page 1528 and 1529:
TOTAL DIESEL RANGE HYDROCARBONS Ran
Page 1530 and 1531:
-, - - -* 2; 3 \) \e 4 av\ ~ u h ~
Page 1532 and 1533:
DBM CONTACT: FIELD NOTES:' DATE OF
Page 1534 and 1535:
ROCK STRUCTURAL DATA FIELD SHEET JO
Page 1537:
schmit 011 fdling 71.58.50. phom N6
Page 1540 and 1541:
APPENDIX N RESULTS OF STATISTICAL A
Page 1542 and 1543:
Railraod Creek September 1998 Basef
Page 1544 and 1545:
January 20,1998 Robert Quinlan Dame
Page 1546 and 1547:
MACROINVERTEBRATE DENSITY CLIENT: D
Page 1548 and 1549:
I I MACROINVERTEBRATE DENSITY CLIEN
Page 1550 and 1551:
I RACROlNVERTEBRATE DENSITY CLIENT:
Page 1552 and 1553:
1 YSECTA WACROINMRTEBRATE DENSITY C
Page 1554 and 1555:
I 'MA NSECTA Capni i&e Claassmie se
Page 1556 and 1557:
TAXA INSECTA Desputis sugusts Leuct
Page 1558 and 1559:
MCROINYERTEBRATE DENSITY CLIENT: DU
Page 1560 and 1561:
MACROINVERTEBRATE DEUSITY CLIENT: O
Page 1562 and 1563:
.. DAMES AND MOORE HOLDEN MINE REFE
Page 1564 and 1565:
DAMES AND MOORE HOLDEN MINE REFEREN
Page 1566 and 1567:
APPENDIX P WASHINGTON NATURAL HERIT
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Dames & Moore, 1999 - USDA Forest Service

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