DWQ-2024-003779

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........J North Barneys Drainage Seep Collection System Operations and Maintenance Plan ;::1
::S Operations
,_.. The North Barneys Drainage Seep Collection System (System) operates in passive mode. The System 0 collects spring water at two locations within the North Barneys Drainage and gravity flows to the KUC's
Tailing Pipelines. The first location (Box 1) is located at the toe of the Barneys Dump. Box 1 is fed shallow
sub surface spring water through two 30 feet long French drain systems (Figure 1). The French drain
systems for each consist of a perforated 6 inch HOPE pipe enveloped in course aggregate that is
wrapped in a filter fabric. The second location (Box 2) is located approximately 2500 feet east of Box 1
in the Bancroft Springs area . Box 2 is fed shallow sub surface spring water through one 30 feet long
French drain systems (Figure 2). The French drain system consist of a perforated 6 inch HOPE pipe
enveloped in course aggregate that is wrapped in a filter fabric .
Figure 1.
Fi gure 2.
Maintenance
FRENCH DRAIN
I"'..AH VIEW
... ......
-1
CROSS SECTION A-A
@!] S!RIHG BOX 01
-• ·a· t
I 02 1 S~RING BOX 02
--..:::.-----~ -
CROSS SECTION 8-8
The System is inspected on a quarterly basis. The inspection consists of; 1) Driving the pipeline route and
visually inspecting the surface for any out of normal conditions such as ponded water, isolated wet
surface expressions, surface voids and erosion; 2) Visually inspecting the area around Box 1 and 2 for
any out of normal conditions such as ponded water, isolated wet surface expressions, surface voids and
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~ erosion; 3) Visually inspecting the interior of Box 1 and 2 for any signs that may indicate the integrity of
....,.. the box is compromised; 4) Measurement of the thickness of sediment in the bottom of the box, and; 5) ::S Measurement of flows from pipes into the boxes and reconciliation of flows with a measurement of the
,...... combined flow into manhole 1 (Figure 3). The quarterly inspection is documented on the attached 0 inspection checklist. Any issues noted in the inspection will require documented corrective action.
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North Barneys Drainage Seep Collection System Quarterly Inspection Form
Date: Time: Inspector: -------------------
Task Observed Issue Issue Description Corrective Action
Pipeline Yes No
Corridor
Area Around Yes No
Box 1
Area Around Yes No
Box 2
Yes No
Interior of Box 1 Thickness of
Sediment•
Yes No
Interior of Box 1 Thickness of
Sediment•
*Remove sediment if within one inch of the bottom of any of the boxes pipes .
Pipe Flow Flow Flow Average
Measurement measurement measurement
#1 (GPM) #2 (GPM) #3 (GPM)
Box 1 (west)
Box 1 (south)
Box2
Total box flow for above pipes
Manhole 1
Percent difference (Total box flow vs Manhole 1)**
**Investigate possible issue if there is a 10% discrepancy between the Boxes total flow versus Manhole
1 flow.
5
1\.ennt'cutt Utah Copper
4700 DaYbreak Park\,·a,·
South Jordan, Utah 84095
L·sA
T 801-204-2814
M 8ot-556-3317
Dl'ecmbcr t6, 2015
Mr. Dan Hall
Department of Environmental Quality
Division of Water Quality
P.O. Box 144870
195 North 1950West
Salt Lake City. Utah 84114-4870
ATTN: Mr. Brian Hamos
,-
Subject: Report for Water Quality Source Characterization of Spring Water Flow in North Barneys
Canyon Drainage
Dear Mr. Hall:
On behalf of Barneys Canyon Mining Company. Kennecott Utah Copper LLC (K C) h a prepared this report
per a letter d ated 0 tobe r 27, 2015 from Uta h Department of Water Quality (DWQ) in respons e to a plan
submitted by KUC in late eptemb r 2015. Th plan s ubmitted and approved by DWQ focuse on "Source
Characterization Investigations for onh Barneys re ek Spring Flow". Seven tasks were identified to better
understand the hydrogeology and geochemist!)' for the spring water flow.
KUC has recently installed a six inch HPDE gravity pipeline to collect the spring water. The new line has two
capture point boxes and began collecting water on December 4. 2015 . The upper collection box is located at
the base of the reclaimed toe of the Barneys 6300 waste rock pile and the second box is located immediately
downstream of Bancroft Springs. It is important to n ote that the upper collection box is centered on North
Barneys Drainage. Upper North Barneys Drainage was filled with waste rock so any infiltration into the
waste rock would report to the North Barneys Drainage bottom. This aspect of drainage capture is discussed
below under Task 5.
The seven tasks for assessing the source of the water quality and flow in North Barneys drainage are
presented below.
1. Provide all water quality data and location of samples for water associated with the springs sampled
in North Barneys drainage and potential source water.
KUC has established three sampling locations (BCS2845A. C and D) on North Barneys Creek (Table 1 and
Figure A). In addition, two additional samples (both labeled as BCS2845) were collected prior to the
established sample locations. The three locations have been sampled four times in 2015 and the earlier
samples were collected on Februal)' 2015 and May 2011. The sample identification and locations
include:
• BCG2845 : Sample site near Bancroft Spring sampled on 5/16/2011 and 2/13/2015.
Intermittent flow was noted in 2011 and no sampling was completed from 2012 through 2014.
• BCS2845A: Located at the base of the reclaimed Barneys 6300 dump toe . Surface flow for
North Barneys drainage originates at this site . Samples have been collected on 3/13. 6/19. 7/31
and 11/20. all in 2015.
• BCS2845C: Sample site located immediately downstream of Bancroft Springs. Flow upstream is
intermittent. Sample dates are same as BCS2845A.
• BCS2845D: Sample site is located approximately 900 feet down stream of BCS2845C. Sample
dates are same as BCS2845A.
In addition. Barneys Pit Lake is sampled regularly. Al though it appears that the groundwater quality in
Barneys Pit does not correspond to the orth Barneys drainage water quality. it is lo cated upgradient and
on the ge neral groundwater flow path for orth Ba rneys drainage . TDS concentrations of Barneys Pit
La ke are approximately 3.5 times less than TDS at BCS2845A. KUC has collected samples for Barneys Pit
on at least an annual basis since 2002 when the pit lake began forming. The data is included in Table 1
and t he ample identifica tion is BCS2733. BCG2733 water quality has not significantly changed since
2002 with neutral to alkaline pH . TDS in the 450 to 500 mg/1 range and arsenic in the 0.040 mg/1 range .
2. Provide any historic water quality for drainage collected prior to mining.
Prior to mi ning at Barney . pecifically. Barney Pit. water sampling was conducted for existing springs .
For the Nor th Barneys drainage . one sample was collected from Bancroft Springs on April 6. 1988 with
total arsen ic measured at 32 ug/1. Re sults fo r th is sample are also included in Table I . The flow for
Bancroft Springs was listed at 30 gpm in the spring of 1988.
3. Provide hydrogeology sections: 1) one section parallel along drainage that begins at Barneys Pit and
terminates at Copperton Improvements District Well W31 and 2) two sections perpendicular to
drainage arranged north-south with western section across the upper seep at the base of the
reclaimed waste rock toes and the second north-south section at Bancroft Springs. All geology data
available will be used for the sections.
Three figures have been prepared with a geologic plan view and three hydrogeology sections.
• Figure 1: Includes a geologic plan view map for area and the location of three cross sections.
• Figure 2: A-A ' is an East-West hydrogeology section which begins at Barneys Pit and extends
eastward to include Copperton Improvement District wells (W31 & W32).
• Figure 3: Two North-South hydrogeology sections we re cut perpendicular to the east-west cross
section . with the west most section located at the toe of the reclaimed Barneys 6300 waste rock
and the east most section located just upstream of Bancroft Springs .
4. Provide time series information for three sample sites on the North Barneys drainage with graphs for
total dissolved solids, sulfate and arsenic and a discussion of the data.
• Graph are pres~nted for each of the three sample sites with metals grouped on one graph (total
and disso lved arsenic and thallium) and TDS and S04 on the second . Flow is shown on both
graphs for ach of th three sample sites. Supporting data is in Table 2.
• No significant trends are apparent except for decreasing flow rates over time . Arsenic
con centrations are greater at the downgradient sites for BCS2845C and D while thallium is
greater upgradient.
5 . Present and discuss the history of the waste rock p laced i mmediately upstream of the se ep located at
the base of the reclaimed waste rock toe. Ite m s to include ex i sting known geoche mistry. when waste
rock was placed and types of waste rock placed (a sulfide ore pile was located on top of the waste
rock b u t was later removed). Searches of history will be made to better e xplain this h istory.
• Figure 4: Plan view to pographi c map. Th to po is pre-mining from 1978 with outlines for both
Ba m eys Pit and the Barn ys 63 00 waste rock . In addition . the former sulfide ore staged on the
Barneys 6300 waste rock (-I992-2005) is shown . Other feature in lude the spring capture
locatio n s on 1orth Bameys dra inage and the monitoring a nd production wells a sociared with
Barneys.
• Barneys pit excavation began in I 989 und the waste rock was placed a djacent to the north
and east of the pit and the pit was mined out in the mid 1990s .
• Barney 6300 waste ro k was placed in a North Barneys drainage (Figure 4). Generally the
wast rock was dumped eastward and the outer eastern slope drains east. The waste rock
footprint is approximar ly 113 acres. There is a to po low of approximately 10 acres lo cated
on the top of the Barneys 6300 waste rock. The entire footprint of the Barneys 6300 waste
rock lies within the surface capture area of North Barneys drainage.
• Beginning in approximately 1992 through 1999. sulfide ore was stacked on top of the 6300
Barneys waste rock in the topo low area. Based upon mapping by Barneys personnel and as
seen on Coogle Earth. the footprint of the sulfide ore footprint was about 6.6 acres and it
was not removed and taken to the Sulfide Mill area until late 2004/early 2005.
• Barneys 6300 waste rock and the sulfide ore stockpile were sampled in 1999. Field
parameters of paste pH and paste conductivity were measured with a limited number of
samples also analyzed for ABA characteristics (Table 3 and Figure 7). The sulfide ore is
strongly net acid generating while the Barneys 6300 waste rock is strongly net neutralizing
with few sulfides. relatively low total metals concentrations and abundant calcium
carbonate.
• Observations of the former sulfide ore footprint made in November 2015 show local areas
of sparse vegetation or no vegetation and abundant iron staining along with local sulfide
rock still present. Based upon the observations. KUC will sample and map the residual
sulfide ARD generating footprint.
• Figure 5: Based upon the topography for the North Barneys drainage and the location of the
Barneys 6300 waste rock. a local watershed boundary was drawn which encompasses the waste
rock area. The total acreage is approximately 160 acres and most if not all of this acreage would
report to North Barneys drainage. North Barneys drainage is underlain with a thin
colluvial/alluvium layer. clay with varying thickness and then volcanic bedrock. It is believed
that meteoric water infiltrating the waste rock moves laterally and downward to the clay where
it is perched and moves laterally downgradient to the eastern base of the reclaimed Barneys
6300 waste rock toe and reports to North Barneys drainage.
• It is believed that the former sulfide ore stockpile footprint is generating most of the TDS
and metals seen in the North Barneys drainage flow. Because the former sulfide pile was
located in a topo low. meteoric water that infiltrated the pile and currently continues
through the former footprint. is able to mobilize contaminates downward to the base of the
waste rock. Because the pre-mine topography will continue to route meteoric infiltration
through the subsurface to the underlying drainage. flow is and will be captured with the
newly installed capture points and pipeline beginning at the base of the reclaimed waste
rock in North Barneys drainage. Given the stockpile has been removed. significant
additional contaminant loading is considered unlikely and water quality is anticipated to
gradually improve.
• During installation of the upgradient box in North Barneys drainage as part of the pipeline
installation. it was noted that flow emanating from the reclaimed waste rock toe was
conveyed along the base of the waste rock. Also during the excavation of the pipeline. it was
noted that portions of the pipeline trench encountered volcanic bedrock or clay
immediately above the bedrock. Both indications would support the observation that the
flow is perched on top of the clay and/or the volcanic bedrock.
6. Provide regional water table map that depicts all data points used to contour data.
Figure 6: Water level map for Barneys area including North Barneys drainage.
• Water gradient is west to east.
• The water table beneath the Barneys 6300 waste rock is likely perched. The regional water table
likely has a steeper gradient beginning at Barneys Pit that moves eastward into the basin.
• Barneys Mining has two moni toring we lls located directly d owngradient of North Barneys
dra inage (BCG284 and BCG850). It appears that BCG850 may be monitoring the pe rched aqu ife r
and B G284 may be monitoring the region al aquifer. Both wells are sampled reg ularly a part o f
the B rneys GWDP.
7. Provide a monitoring plan for the capture points (two) on the springs that include frequency of
sampling and flow measurements. It is anticipated that analytes will be same as those in
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groundwater discharge permit and that frequency of sampling and flow measurements will be semi-
annuaL
• During the pipeline installation to capture the springs in North Barneys drainage. two capture
boxes (Figure 5) were installed with one located at the toe of the reclaimed Barneys 6300 waste
rock toe and a second box immediately downgradient of Bancroft Springs. Based upon the
sampling results for BCS2845A. C and D. it appears the water quality is similar with general salt
and metals precipitate concentrations increasing proceeding downstream due to evaporation. It
would appear the water seen in North Barneys originates from infiltration into the Barneys
6300 waste rock and with runoff from native soil adjacent to waste rock.
• It is anticipated flow may dry up downstream of the upper capture box over time due to where
the water is sourced from upstream.
• Flow measurements will be collected twice a year at both capture boxes.
• Water samples will collected twice a year with one sample from each capture box.
• Analytes will be the same suite for the monitoring wells under the Barneys GWDP.
If you should have questions or comments on this report. please contact Brian Vinton at [phone].
Attachments
Table 1: North Barneys Drainage and Barneys Pit
Manager. Environment. Land and Water
Kennecott Utah Copper LLC
On behalf of Barneys Canyon Mining Co.
Table 2: Time Series data for Three Seep Samples; TDS, S04, As, Th and Flow
Table 3: Barneys Waste Rock and Sulfide Ore Sampling from 1999 on the Barneys 6300 Dump Level
Figure A: North Barneys Drainage Seep Sample Locations
Figure 1: Barneys Plan View and Section Locations
Figure 2: Hydrogeology Section A-A'. East-West section
Figure 3: Hydrogeology Sections B-B' and C-C'. North-South sections
Figure 4: Pre-Mining Topograph
Figure 5: Barneys Waste Rock Watershed
Figure 6: Barneys Water Table
Figure 7: Barneys Waste Rock and Sulfide Ore ABA Sampling ..
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Figures
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Tables
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T bl 1 N rth B a e 0 arneys D ramag e an dB arneys Pt L k I a e
Station Date Conductivity pH·T Temper Flow Alkalinity-Aluminum-0 Aluminum-T Antimony-Antimony-Arsen ic-D Arsenic:-Barium-Barium-Cadmium-Cadmium-Cakium-T Chloride-Olromlu Ouomium-T Copper-!Copper-T EPA Ruoride-T Hardness-T Iron-D Iron -T Lead-D Lead-T Magnesl Manganese-ranganese-Mercury-Nickei-D Nickei-T Nitrate Nitrite Potassi Seleniu Silver-0 Silver-T S<XIium-Sulfate-T Thallium -D Thalliu Titanium-Titanium-Tota l Tota l Zinc-D Zinc-T
Field-T (Field) ature-T (gpm) T(mg/L (mg/L) (mg{L) D (mg{L) T (mg{L) (mg/L) T D T D (mg{L) T (mg{L) (mg{L) T (mg/L) m-D (mg{L) D l (mg{L) Tota l (mg/L) {mgjlas (mg/L) (mg/L) (mg{L) (mg/L) um -T D (mg{L) T (mg/L) T (mg{L) (mg/L) (mg/L) Nitrogen-Nitroge um-T m-D (mg/L) (mg/L) T (mg{L) (mg/L) m-T D (mg{L) T (mg/L) Dissolved Suspende (mg/L) (mg{L)
(uS/an) (Reid ) as (mg/L) (mg/L) (mg{L) (mg/L) (mg/L) Cyanide-caco3) (mg/L) T(mg/L) n-T (mg/L) (mg{L) (mg/L) (mg{L Solids-T d Solids-T
r,.rrm ""'
BCS2B4SA 3/13/2015 2117 8.05 12.3 15.8 345 <0.02 0.037 O.QJB 0.036 0.082 0.089 <0.001 <0.001 172 280 <0.01 <0.01 <0.02 <0.02 840 <0.03 0.044 <0.005 <0.005 100 <0.01 <0.01 <0.0002 6.6 <0.04 4.9 0.022 <0.005 <0.005 131 428 <0.01 <0.01 1430 <3 0.013 0.093
BCS2845A 6/1912015 2130 6.88 11.4 7.55 346 0.034 0.042 0.081 0.1 <0.001 <0.001 197 274 <0.005 <0.005 <0.01 <0.01 980 <0.03 0.363 <0.005 <0.005 119 <0.0002 6.7 <0.04 SA 0.019 <0.005 <0.005 138 482 0.008 0.01 1240 4 0.011 0.033
BCS2845A 7131/2015 2082 7.2 10.6 9.32 344 0.032 0.036 0.08 0.085 <0.001 <0.001 185 267 <0.005 <0.005 <0.01 <0.01 BB! <0.03 0.048 <0.005 <0.005 102 <0 .0002 6.3 <0.04 5 0.019 <0.005 <0.005 127 458 0.007 0.009 1470 14 0.011 0.021
BCS2845A 11/20/2015 2108 7.44 10.1 9.32 335 0.034 0.088 <0.001 177 267 <0.005 <0.0 1 <0.005 898 <0.03 <0.005 111 <0.0002 6.2 <0.04 SA <0.005 136 0.008 1440 <3 0.014
BCS2B4SC 3/1312015 2190 7.77 9.5 7,55 345 <0.02 0,357 0.051 0.065 0.048 0.066 <0.001 <0.001 171 348 <0.0 1 <0.01 <0.02 <0.02 801 <0.03 0.445 <0.005 <0.005 91 0.118 0.154 <0.0002 1.9 <0.04 3.7 0.015 <0.005 <0.005 145 362 <0.01 0.0 1 1410 24 <0.01 0.056
BCS2845C 6/19/2015 2240 7.31 13.8 4.57 39 1 0.114 0.14 0.062 0.072 <0.001 <0.001 202 363 <0.005 <0.005 <0.01 <0.01 948 <0.03 0.347 <0.005 <0.005 108 <0.0002 0.7 <0.04 4.6 0.005 <0.005 <0.005 164 389 0.004 0.005 1470 26 <0.01 <0.01
BCS2845C 7/31/2015 2057 7.68 14.5 4.57 410 0.12 0.135 0.062 0.069 <0.001 <0.001 204 370 <0.005 <0.005 <0.01 <0.01 9 16 <0.03 0.198 <0.005 <0.005 99 <0.0002 0.5 <0.04 4.8 0.006 <0.005 <0.005 154 392 0.004 0.005 1580 6 <0.01 <0.01
BCS2845C 11/20/2015 2239 7.67 6.7 2.33 394 0.035 O.M7 <0.001 176 366 <0.005 <0.01 <0.005 830 <0.03 <0.005 95 <0.0002 1 <0.04 4 <0.005 141 0.003 1'130 8 <0.01
BCS28'15 D 3/13/2015 2126 8.22 7.8 13A 292 <0.02 0.024 0.087 0.086 0.039 0.041 <0.001 <0.001 170 349 <0.01 <0.01 <0.02 <0.02 802 0.04 0,068 <0.005 <0.005 92 0.133 0.136 <0.0002 0.4 <0.04 4.2 0.008 <0.005 <0.005 155 363 <0.01 <0.01 1340 <3 <0.01 0.047
BC$2845 0 6/19/2015 2330 7.28 15.7 4.57 365 0.19 0.223 0.056 0.063 <0.001 <0.001 187 379 <0.005 <0.005 <0.01 <0.01 894 <0.03 0.689 <0.005 <0.005 104 <0.0002 <0.2 <0.04 4.4 0.004 <0.005 <:0.005 169 375 0.006 0 .007 1420 190 <0.01 <0.01
BCS2845D 7131/2015 2299 8.14 15.8 2.33 320 0.139 0.148 0.05 1 0.055 <0.001 <0.001 182 376 <0.005 <:0.005 <0.01 <0.01 869 <0.03 0.063 <0.005 <0.005 101 <0.0002 <0.2 <0.04 4.9 0.004 <0.005 <0.005 161 386 0.005 0 .005 1570 7 <0.01 O.o?
BC$28450 11/20/2015 2228 7.88 3.6 2.33 361 0.056 0.043 <0.001 189 375 <0 .005 <0.01 <0.005 895 <0.03 <0.005 103 <0.0002 0.6 <0.04 4.9 <0 .005 !57 0.003 1430 3 <0.01
Bancroft 4/6/1988 1200 8.24 9 30 169 0.01 0.01 0.017 0.032 0.009 0.011 <0.005 <0.005 96 168 <:0.010 <0.010 <0.010 <0.010 <0.005 0.1 <0.10 0.59 0.006 0.013 52.7 0.01 0.04 <0.00 1 0.03 0.06 0.49 <0.02 3.1 0.004 <0.010 <0.010 123 !59 783 <0.010 0.01
k ndon<
BCS2845Jl 5116/2011 2370 8.0 1 13 <5 252 0.107 0.042 <0.001 190 454 <0.01 <0.02 <0.005 886 <0.02 <0.005 <0.005 100 <0.0002 1 <0.04 4.4 0.006 <0.005 17\l 503 1690 <3 <0.01
BCS28'15JI 211312015 2229 7.4 14 ~10 356 0.048 0.048 0.089 <0.001 178 346 <0.01 <0.02 <0.005 826 <0.02 <0.005 93 <0.0002 1.9 <0.04 3.9 0.013 <0.005 147 366 1440 23 <0.01
Bameys Pit Date . • pH·T • •Aow·T Alkalinity · Aluminum-D Aluminum-T Antimony-Antimony · Arsenic·D Arsenic· Bariu m-Barium-cadmium· Cadmium-caldum·T Chloride-Olromiu Chromium-T Copper-Copper·T EPA Auoride-T Hardness-T Iron·D Iron·T lead-D l ead-T Magnesi Manganese-Manganese-Mercury-Nicke i-D Nickei-T Nitrate Nitrite Potassi Seleniu Silver D Silver-T Sodium· Sutfate·T Thallium·D Thalliu Titanium-Titanium-Total Total Zinc-D Zinc-T
Lake Conductivity (Fteki) Temper (gpm) T(mg/L (mg/L) (mg/L) D (mg{L) T (mg/L) (mg/L) T D T D (mg{L) T (mg/L) (mg/L) T (mg/L) m-D (mg/L) D (mg/L) Total (mg/L) (mg{Las (mg/L) (mg/L) (mg/L) (mg/L) um-T D (mg{L) T (mg/L) T (mg{L) (mg{L) (mg{L) Nitrogen-Nitroge um-T mDRC-(mg/L) (mg{L) T (mg{L) (mg/L) m-T D (mg/L) T (mg/L) Dissolved Suspende (mg/L) (mg{L)
F~eld-T ature-T as (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) Cyanide-cacOJ) (mg{L) T(mg/L) n-T (mg{L) D (mg/L) (mg/L Solids·T d So!lds-T
''"'/=\ l m """" oil" oil" "I"
8CS2733 6/3/2002 694 7,93 16 214 67 58 <0.005 39 <0.0002 2.8 49 123 420 9
BCS2733 6/312002 694 7 .93 16 214 0.049 0.05 <0.001 67 58 <0.01 <0.02 <0.005 <0.005 39 <0.0002 2.8 <0.001 49 123 420 9 <0.01
BCS2733 11/12/2002 1101 8,33 6 244 0.058 0.06 <0.001 85 173 <0.01 <0.02 <0.005 <0.005 55 <0.0002 4.9 <0.001 93 189 0.027 690 37 0.017
BCS2733 5/28{2003 790 7.74 26 0.051 0.051 0.05 0.05 <0.001 <0.001 68 63 <0.01 <0.01 <0.02 <0.02 <0.3 <0.3 <0.005 <0.005 40 l.B 0.005 <0.001 <0.001 43 117 0.031 0.031 430 8 <0.01 <0.01
BCS2733 11/14/2003 757 8.2 B 230 0.05 0.06 <0.001 74 60 <0.01 <0.02 0.007 <0.005 38 <0.0002 1.6 0.004 <0.001 40 111 500 <3 <0.01
BCS2733 3/1912004 1211 7.02 10 334 0.016 0.1 07 <0.001 122 140 <0.01 <0.02 <0.005 <0.3 <0.005 53 <0.0002 2.7 0,007 <0.001 77 168 0.002 800 <3 <0.01
BCS2733 8/3112004 785 7.71 15 215 0.047 0.069 <0.001 64 62 <0.01 <0.02 0.005 <0.3 <0.005 39 <0.0002 0.2 1.5 0.004 <0.001 4 1 118 0.03 440 3 0.02
BCS2733 3/29/2005 780 8.03 12.5 258 0.039 0.061 <0.001 79 56 <0.01 <0.02 0.005 <0.3 <0.005 38 <0.0002 0.2 1.4 0.004 <0.001 39 109 0.022 500 7 0.015
BCS2733 12/31/2005 1050 7.42 12 221 0.045 0.072 <0.001 79 ss <0.01 <0.02 <0.005 0.032 <0.005 38 <0.0002 <0.2 1.5 0.004 <0.001 38 113 0.021 511 95 0.01
BCS2733 4/21/2006 801 8.16 56 217 0.033 0 .059 <0.001 69 53 <0.01 <0.02 <0.005 <0.02 <0.005 36 <0.0002 <0.2 1.5 0.004 <0.001 37 111 0.014 459 9 <0.01
BCS2733 10/23/2006 740 8.11 15 198 0.032 0.064 <0.001 59 56 <0.01 <0.02 <0.005 <0.02 <0.005 38 <0.0002 <0.2 1.6 <0.002 <0.001 39 117 0.015 428 3 <0.01
BCS2733 3120/2007 590 BAS !58 0.026 0.049 <0.001 49 41 <0.01 <0.02 <0.005 242 <0.02 <0.005 29 <0.0002 <0.2 1.2 0.003 <0.001 30 BO 0.012 326 <3 <0.01
BCS2733 9125/2007 740 7.97 18 189 0.033 0.066 <0.001 57 58 <0,01 <0.02 0.007 303 <0.02 <0.005 39 <0.0002 <0.2 1.3 0.003 <0.001 41 113 0,016 432 <3 0.011
BCS2733 4/14/2008 270 8.04 !B 58 0.011 0.022 <0.001 18 21 <0.01 <0.02 <0.005 83 <0.02 <0.005 9.2 <0.0002 <0.2 <0.5 <0.002 <0.001 11 31 0.004 122 4 <0.01
BCS2733 10/28/2008 841 7.61 NA 200 0.032 0.063 <0.001 57 58 <0.01 <0.02 <0.005 295 <:0.02 <0.005 37 <0.0002 <0.2 1.3 0.003 <0.001 38 112 0.017 436 <3 <0.01
BCS2733 4/21 /2009 760 8.06 16 206 0.033 0.062 <0 .001 60 60 <:0.01 <0.02 <0.005 302 <0.02 <0.005 37 <0.0002 <0.2 1.5 0.003 <0.00 1 38 111 0.018 428 <3 <0.01
BCS2733 10/15/2009 710 8.17 13 201 0.034 0.062 <0.001 47 57 <0.01 <0.02 <0.005 257 <0.02 <0.005 34 <0.0002 <0.2 1.5 0.003 <0.001 34 115 0.017 432 <3 <0.01
8CS2733 4/20/2010 740 8.2 11 201 0.034 0.061 <0.001 59 57 <0.01 <0.02 <0.005 300 <0.02 <0.005 37 <0.0002. <0.2 1.3 0.003 <0.001 38 101 0.015 402 <3 <0.01
BCS2733 6/3012010 705 7.7 20.06 184 0.033 0.058 <0.001 49 61 <0.01 <0.02 <0.005 271 <0.02 <0.005 36 <0.0002 <0.2 1.4 0.003 <0.001 38 112 0.017 366 <3 <0.01
BCS2733 6/30/2010 660 7.62 19.8 179 0.034 0.058 <0.001 49 57 <0.01 <0.02 <0.005 275 <0.02 <0.005 37 <0.0002 <0.2 1.4 0.003 <0.001 39 104 0.017 368 <3 <0.0 1
8CS2733 6/30/2010 670 7.64 18.8 179 0.034 0.059 <0.001 so 60 <0.01 <0.02 <0.005 36 1.4 0.003 38 103 0.017 368 <0.01
BC$2733 6{30{2010 680 6.81 8 203 0.033 0.063 <0.001 53 60 <0.01 <0.02 <0.005 35 1.3 0 .003 36 104 0.017 388 <0.01
BCS2733 6/30/2010 670 7.06 7 203 0.034 0.063 <0.001 56 61 <0.01 <0.02 <0.005 36 1.4 0 .003 38 104 0.017 396 <0.01
BCS2733 6/30/2010 680 6.73 6.5 2 17 0.045 0.068 <0.001 59 60 <0.01 <0.02 <0.005 37 1.4 0.003 38 102 0.018 394 <0.01
BCS2733 6/30/2010 680 6.65 5.5 217 0.058 0.071 <0.001 61 60 <0.01 <0.02 <0.005 37 1.3 0 .003 38 97 0.018 400 <0.01
8CS2733 1011412010 712 8.2 16.7 187 0.037 0.061 <0.001 53 67 <0.01 <0.02 <0.005 297 <0.02 <0.005 40 <0.0002 1.6 0.003 <0.001 42 111 0.017 396 <3 <0.01
BCS2733 5/16/2011 690 8.25 14 189 0.036 0.059 <0.001 51 61 <0.01 <0.02 <0.005 267 <0.02 <0.005 34 <0.0002 <0.2 <0.04 1.5 0.003 <0.001 35 99 0.02 368 3 <0.01
BCS2733 1011812011 710 8.18 15 172 0.036 0.062 <0.001 49 59 <0.01 <0.02 <0.005 271 <0.02 <0.005 36 <0.0002 <0.2 1.4 0.003 <0.001 37 101 0.013 394 <3 <0.01
BCS2733 4/2412012 713 B.l 18 .1 190 0.033 0.062 <0.001 53 61 <0.01 <0.02 <0.005 281 <0.02 <0.005 36 <0.0002 <0.2 <0.04 1.7 0.003 <0.001 36 102 0.01 408 <3 <0.01
BCS2733 11/6/2012 8,11 13 189 0.037 0.062 <0.001 53 59 <0.01 <0.02 <0.005 289 <0.02 <0.005 38 <0.0002 <0.2 <0.04 1.6 0.003 <0.001 40 110 0.011 414 <3 <0.0 1
BCS2733 5/17/2013 728 8.3 1 11.2 195 0.036 0.06 <0.001 50 55 <0.01 <0.02 <0.005 269 <0.02 <0.005 35 <0.0002 <0.2 <0.04 1.4 <0.005 36 99 0.011 358 <3 <0.01
BCS2733 10/1/2013 738 8.22 19 196 0.04 0.054 <0.001 48 60 <0.01 <0.02 <0.005 272 <0.02 <0.005 37 <0.0002 <0.2 <0.04 1.3 <:0.00 5 39 97 0.01 396 7 <0.01
BCS2733 10/B/2014 757 8.17 19 179 0.043 0.056 <0.001 45 56 <0.01 <0.02 <0.005 260 <0.02 <0.005 36 <0.0002 <0.2 <0.04 1.5 <0.005 39 102 0.01 388 <3 <0.01
BCS2733 1112012015 1036 8.13 7.90 186 0.049 0.06 <0.001 52 56 <0.005 <0.01 <0.005 290 <0.02 <0.005 39 <0.0002 <0.2 <0.04 1.7 <0.005 39 0,011 400 3 <0.01
Table 2: Barneys Waste Rock and Sulfide Ore Sampling from 1999 on the Barneys 6300 Dump Level. (See Figure 7 for Sample Locations)
Material Paste
Placement Conductivity
Sample ID Rock Type Date Paste pH (umhos/cm)
Run of mine waste from
BARN99 -59 Barneys Pit 1992 8.31 479
Run of mine waste from
BARN99-60 Barneys Pit 1992 8.46 112
Run of mine waste from
BARN99-61 Barneys Pit 1992 7.71 135
Run of mine waste from
BARN99 -62 Barneys Pit 1992 8.14 113
Run of mine waste from
BARN99-63 Barneys Pit 1992 7.87 368
Run of mine waste from
BARN99-64 Barneys Pit 1992 7.19 379
Sulfide Ore staged on top
BARN99 -75 of Barneys Pit waste rock 1998 2.39 10,300
Sulfide Ore staged on top
BARN99-76 of Barneys Pit waste rock 1997 2.88 8770
Sulfide Ore staged on top
BARN99-78 of Barneys Pit waste rock 1999 6.89 3320
(1} Residual Sulfur= Total sulfur-sulfate sulfur
(2) Acid Potential= (residual sulfur) X (31.25}, reported as lbs of CaC03 per 1000 lbs of rock
{3} Neutralization Potent ial reported as lbs of CaC03 per 1000 lbs of rock
(4) Acid/Base Accounting Potential= NP -AP, reported as lbs of CaC03 per 1000 lbs of rock
(5} NPR = NP/AP
Residual Acid
Total Sulfate Sulfur(%) Potential Sobek NP
Sulfur(%) Sulfur(%} {1} (2} (3)
0.03 <0 .01 0.03 1 40
0.03 <0.01 0.03 1 28
2 .38 1.17 1.21 38 0
0.93 0.51 0.42 13 96
ABA
Potent ial
(4} NPR (5}
39 40
27 28
-38 <0.1
83 7.4
T bl 3 T a e 1me s f S I t A I t f N th B enes or eec na1y1es or or arne_ys D ramage s amp1es
Date BCS2845A BCS2845C BCS2845D
BCS2845A BCS2845A BCS2845A Arsenic BCS2845A Thallium BCS2845A Thallium-T BCS2845A Total BCS2845C BCS2845C BCS2845C Arsenic-T BCS2845C BCS2845C BCS2845C Tota l BCS2845D BCS2845D BCS2845D BCS2845D BCS2845D BCS2845D Total
Flow-T Arsenic-D Sulfate-T Disso lved Flow-T Arsen ic-D Thallium-D Tha ll ium-T Su lfate-T Disso lved Flow-T Arsenic-D Arsen ic-T Thallium-D Tha ll ium-T Su lfate-T Dissolved
(gpm) (ug/L) T (ug/L) D (ug/L) (ug/L) (mg/L) So lids-T (gpm) (ug/L) (ug/L) (ug/L) (ug/L) (mg/L) So lids-T (gpm) (ug/L) (ug/L) (ug/L) (ug/L) (mg/L) So lids-T
(mg/L) (mg/L) (mg/L)
3/13/2015 15.8 38 36 428 1430 7.55 51 65 362 14 10 13.4 87 86 363 1340
6/19/20 15 7.55 34 42 8 10 482 1240 4 .57 114 140 4 5 389 1470 4.57 190 223 6 7 375 1420
7/31/20 15 9.32 32 36 7 9 458 1470 4.57 120 135 4 5 392 1580 2.33 139 148 5 5 386 1570
11 /20/2015 9 .32 34 8 1440 2.33 35 3 1430 2.33 56 3 1430
'§,
:::J
45
40
35
30
25
20
15
10
5
Mar-2015 May-2015
• Arsenic-D (ug/L)
------o---Arsenic-T (ug/L)
T Thallium-D (ug/L)
t::. -Thall ium-T (ug/L)
X Flow (gpm)
BCS2845A
18
16
14
12 E
0..
0>
10
X X
8
~
/:::.
T T -""
6
Jul-2015 Sep-2015 Nov-2015
BCS2845A
1600 18
(")_
1400 16 X
1200
14
1000
"=:::: E 0> 12 E 0..
0>
800
10
600 X X
• • • 8 400 X
200 6
Mar-2015 May-2015 Jul-2015 Sep-2015 Nov-2015
• S04 (mg/L)
------o---TDS (mg/1)
X Flow(gpm)
(3,
::::l
160
X
140
120
100
80
60
40
20
0
Mar-2015 May-2015
• Arsenic-D (ug/L)
--o---Arsen ic-T (ug/L)
T Thallium-D (ug /L)
t::. -Thallium-T (ug /L)
X Flow(gpm)
BCS2845C
8
7
6
E 5 Q_
Dl
~
Dl
E
4
3
...,.,
X
2
Jul-2015 Sep-2015 Nov-2015
BCS2845C
1800 8
X
1600 -0-
7
1400 v-
6
1200
E 1000 5 Q_
Dl
X X
800
4
600
3
400 ---
X
200 2
Mar-2015 May-2015 Jul-2015 S ep-2015 Nov-2015
• S04 (mg/L)
--o---TDS (mg/1)
X Flow (gpm)
BCS2845D BCS2845D
250 14 1800 14
X X
200 12 1600 .D--12
1400
10 u-10
150
1200
8 8
~ 100 :::J
E a_
0>
'<:::: E 0> 1000 E a_
0>
6 6
800
50 X X
4 4
600
0 -¥-2 X X 2 400 --~
0 200 0
Mar-2015 May-2015 Jul-2015 Sep-2015 Nov-2015 Mar-2015 May-2015 Jul-2015 S ep-2015 Nov-2015
• Arsenic-D (ug/L) • 804 (mg/L)
-o-Arsenic-T (ug/L) -o-TDS (mg/1)
'I' Thallium-D (ug /L) X Flow (gpm)
£:. -Thall ium-T (ug /L)
X Flow (gpm)
2
0
~ a
0
Figures
7
FIGURE A: NORTH BARNEYS DRAINAGE BCS2845 MEASUREMENTS
Rio Tinto
Kenn e c o tt U t ah Coppe r
Station ID: BCS2845-A
Flow (GPM): 9 .32
WaterTemp (F 0
): 50.2
SpecCond (IJs/cm): 2108
pH : 7.44
1 inch = 700 feet
I 0 0.05 0.1 0.2 Mi les I
._! ___._.....__,___,_...._....L.---L----11 -
Date: 11/20/2015
G IS User: ted.balling
© 2014 Kennecott Utah Copper
Coordinate System: NAD 1983 StatePiane Utah Central FIPS 4302 Feet
Path: H:\Home Drive\Barneys\Photos & G IS Files\BarneysSeep.mxd
Station ID: BCS2845-C
Flow (GPM): 2 .33
WaterTemp (F 0
): 44
SpecCond (IJs/cm): 2239
pH: 7.67
Station ID: BCS2845-D
Flow (GPM): 2.33
WaterTemp (F a): 38.5
SpecCond (IJs/cm): 2228
pH: 7.88
Measurement Location
Spring Area
---Wet Streambed
Dry Streambed
The information on this map is based
on the most current information available to
Kennecott and should be used for
planning purposes only. No warranty expressed
or implied is made regarding the accuracy or
utility of the data for general or scientific
purposes, nor shal l the act of d istribution
const itute any such warranty.
MONITORING WELLS
ELEVATION CONTOURS (50FT)
CROSS SECTION LINES
SPRINGS CAPTURE SYSTEM MINE DUMPS, ORE LEACH PADS, ARTIFICIAL FILL
FORMER SULFIDE STOCKPILE (6.6 AC) QUATERNARY ALLUVIAL
BARNEY'S PIT (68 AC) TERTIARY VOLCANICS
WASTE ROCK DUMPS (113 AC) PALEOZOIC LIMESTONE AND ORTHOQUARTZITE
Rio Tinto
Kennecott Copper
ON BEHALF OF BARNEY'S CANYON MINING COMPANY
0 0.05 0.1
I
0.2
I
0.3
I
0.4
I
0.5 Ml
0 250 500 1,000 1,500 2,000 2,500 FT BARNEY'S GEOLOGIC CROSS SECTI
A
:::.~ l 6700 ·~
§
6600 ;j :::n
t 6500 ..
6400 ~
6300 -I ~~l =-
6200
61 00
6000
5900
5800
5700
5 6 00
5500
5 400
5300 --~
5200 --~ I I 1 1 :
5 100 '
' 5000 r
I I I
4900 -""--··-· '
4800
4700 "'
4600 §
4500
4 4 00 ;.-.
'
4 300 '
~
4200 ~
'" 41 00
7' ' 4000 I I I T· r-r -
0 +00 10 +00 20+00
A PROFILE A-A'
HZ : 1" = 1.0o o·. VT: 1 "=500'
LOOKING NORTH
0' ra.·.······ 10 oo·
1 i n 1 OO Oft
MONITOR LOCATION
WELL
LOC ID
ELEVATION TOTAL
(top of DEPTH
30+00 40+00
A
SCREEN
INTERVAL
I
NORTHING EASTING casing) (ft bgl) (ft bgl) LEGEND
BCG285 29480 14795 5770.2 131 81-131
BCG284 28189 16955 5576 .9 469 418 .5-468.5
BCG850 28353 17096 5550 .1 246 205 -245
BCG652 26367 16240 5542 .8 164 160-200
W31 26581 19664 5360 .6 1220 149-1218
I
50+00
MON ITORI NG WELL
W32 27145 21075 5325 .0 1000 84-989 __ T __ WA TER LEVEL
(D ASHED WHERE I NFERRE D)
I
' I nr
60+00
B
B'
·T·
70+00
c
C'
---TOPOGRAPHY SUR FACE
FAULT
(D ASHE D WHERE INFE RRED)
'T r· -
80+00
BCG285
'841ft
' ' ' '
I '
~ ~ WAST E ROCK DU MP
AL L UV I AL
90+00
8CG859 BCG852
'!' 809ft
'
'
10 0+00
'
' ' ' '
11 0+00
W32
'!' 1205ft
A'
VO L CAN I C GRAV EL & CL A Y
JO RDA N NARR OWS UN IT
······ f-
120+00
TERTIARY VO L CA NICS
PALE OZOIC SANDSTON E
AND ORTHOQ UARTZ ITE
N
t.t')""
CIO
t!l ·u ·
tll
-~1----t
130+00
2
0
:::J = ......
0
A'
--t-l-·
140 +00 150+00
Figure 2
RIO TINTO KENNECOTT COPPER
ON BEHALF OF BARNEY ·s CANYON MINING CO
BARNEY'S CANYON
GEOLOGIC CROSS SECTION
A-A'
B
6900
6800
6600
6500 --,o
6400 '1
6300 ""
6200
5500
5400
5300
-"'
1-z
5200
5100 :~ ~--1_, ,:J~LT::~ ~~~ L ~_:;'-!-~~ .:::L~-~ ~--lj;-~3L~=:l
5000 -:'-.-l -_ ---~ r-tj=±~ t'-ii-=" .• _" ·~::,_ l , ~ ~-+-i:c
4900
4800
i
4700 ~
4600
4500
r ~-L
-t L
r·
+
-t--
4400
4300
I r
i
4200
4100
~
4000 ~
0+00 10+00 20+00 30+00
B PROFILE B-B'
HZ : 1" = 1,000', VT: 1"=500'
LOOKI NG WEST
0' 1000' ,.... ...... .
1 in 1000ft
LEGEND
B'
t
r
j
40+00 50+00
A
---TOPOGRAPHY SUR FACE t::·~:.:'.\/)1 ALLUVIAL ~ TERTIARY VOLCANICS
__ ,.__ WATER LEVEL
(DASHED WHERE INFERRED)
PALEOZO I C SANDSTONE
ANO ORTHOQUARTZITE
B c
BCG285
'841ft
' ' ' '
B' C'
c C'
6900
6800
6700
Zl
6600
6500
6400 C::''
I I 6300 ~:@ +
6200
6100 _J
;:! T
6000
t
4200 -~
-·
4100
=J
4000
0+00 10+00 20+00 30+00 40+00 50+00
PROFILE C-C' c HZ : 1" = 1,000', VT: 1"=500'
LOOKING WEST
0 ' 1000' ,.. ....... .
BCG859 BCG852 1 in 1000ft
~ 809 ft
'
' ' W32
~ 1295 ft
' ' ' Figure 3
A'
2 RIO TINTO KENNECOTT COPPER
0 ON BEHALF OF BARNEY 'S CA NY ON MI NI NG CO
~ BARNEY'S CANYON
:1 GEOLOGIC CROSS SECTION ..... B-B' AND C-C' 0
MONITORING WELLS
CROSS SECTION LINES
---SPRINGS CAPTURE SYSTEM
FORMER SULFIDE STOCKPILE (6.6 AC)
D BARNEY'S PIT (68 AC)
D WASTE ROCK DUMPS (113 AC)
Rio Tinto
Kennecott Copper
ON BEHALF O F BARNEY'S CAN Y ON MINING COMPAN Y
DATE: 121712015 3 :06:46 PM
CREAT ED BY : TERESA.COCKAYNE
DOCUMENT NAME : FIG4_BARNEYS_TOPOMAP
N 0.05
W E • s 0 250
0.1 0.2 0.3 0.4 0.5 Ml FIGURE 4
I I I I I
BARNEY'S TOPOGRAPHIC MAP
500 1,000 1,500 2,000 2,500 FT SOURCE: USGS 1978
MONITORING WELLS
ELEVATION CONTOURS (50FT)
CROSS SECTION LINES
SPRINGS CAPTURE SYSTEM
D WATERSHED AREA (160 AC)
FORMER SULFIDE STOCKPILE (6.6 AC)
BARNEY'S PIT (68 AC)
WASTE ROCK DUMPS (113 AC)
Rio Tin to
Kennecott Copper N
ON BEHALF OF BARNEY 'S CANYON MINING COMPANY • DATE : 1217120 15 3:09:20 PM
W E
CREATED BY: TERE SA.COCKAYNE s DOCUMENT NAME: FIG5_BARNEYS_WATERSHED
0.05 0.1 0.2
I I
0 250 500 1,000
0.3 0.4
I
1,500 2,000
0.5 Ml
I
2,500 FT
FIGURE 5
WATERSHED AREA FOR BARNEY'S WASTE ROCK
--------
MONITORING WELLS
WATER TABLE CONTOUR (30 FT)
--• SPRINGS CAPTURE SYSTEM
Rio Tinto
Kennecott Copper N 0 0.05 0.1 0.2 0.3 0.4 0.5 Ml W.E I I I I I I I I I I I FIGURE 6 ON BEHALF OF BARNEY'S CANYON MINING COMPANY
DATE : 12/15/2015 3 :32 :48 PM I I I I I I I I I I I BARNEY'S CONTOURED TOP OF WATER TABLE CREATED BY : TERESA.COCKAYNE s 0 250 500 1,000 1,500 2,000 2,500 FT
DOCUMENT NAME : FIG6 BARNEYS WATER TABLE
--------
DWQ-2018-010949
• SAMPLE LOCATIONS (1999)
DRAINAGE
ELEVATION CONTOURS (50FT)
Rio Tinto
Kennecott Copper
ON BEHALF OF BARNEY'S CAN YO N M ININ G COMPAN Y
DATE : 12/7/2015 3:50:21 PM
CR EATED BY : TERESA.COCKAYNE
DOCUMEN T NAME : FIG7_BARNEYS_SAMPLING
0.025 0.05
250
0.1 Ml
500FT
FIGURE 7
SAMPLE LOCATIONS FROM 1999