DRC-2001-001042 - 0901a068808550e8

INrrnxeuoNAt,
UneNrul,r (use)
ConponATroN
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Indefendence Plaza, Suite 950 o 1050 Seventeenth Street . Denver, CO 80265 . 303 628 7798 (main) . 303 389 aL25 (fax)
June 22,2007
VIA EXPRESS COURIER
Mr. William J. Sinclair
Director, Division of Radiation Control ',,
Utah Department of Environmental Quality
P.O. Box 144850 \-.
168 North 1950 West
salt Lake city, UT 84114-4850
Reference: - March 20,2001 UDEQ letter and Request for Additional Site Hydrogeology
Information in response to IUSA September 8, 2000 Revised Groundwater
Information Report
- Ground Water Discharge Permit Application for White Mesa Mill
- Follow up to May 11, 2001 letter from David C. Frydenlund to Williarn J
Sinclair
Dear Mr. Sinclair:
As a follow up to International Uranium (USA) Corporation's ("iUSA's") letter of May ll,
2001, we are submitting herewith the additional information promised in the May lltl'letter.
This information is provided in response to the comments from the Utah Department of
Environmental Quality ("UDEQ") Division of Radiation Control ("DRC") transmitted by letter
dated March 20,2001, in response to IUSA's scheduled submittal of September 8, 2000, and the
April25,2001 meeting to discuss DRC's comments.
Included with the May I l tl' submittal was a revised schedule for completing the requirements for
the Groundwater Discharge Permit ("GWDP"). Absent comments from DRC, IUSA is
continuing to work from this schedule for the remaining submittals, and hopefully the ultimate
issuance of the Permit.
For ease of reference, the request language contained in your letter of March 20 (the Request for
Information, or "RFI") is repeated in the same order as used in the letter, indicated in italics
below.
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Mr. William J.
Jttne22,200l
Page2 of20
I Remaininq Open Issues (February) 7, 2000 DRC RFI)
I l4rell
several wells,
geologic logs,
Diasr
piezometers, and/or
as already provided,
. 2. Ir,and
boring remain without well completion diagrams and
see discussion below
A.
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C.2l - we acknowledge that seven (7),
Three [il d SMW-Item - from the
description provided, it is clear that after instattatiii these three @ *ull, *"rnactually named MW-20, MW-21, and MW-22. we also acknoyt,ledge that neut
survey coordinates have already been provided for these three (3) iells (g/S/00
IUC Revised GIR, LANDesign map sheet I of l) In addition, DRC stoffh'as alsovisited each of these during the last split groundwater samplin[ event in
November, 2000. However, please provide the following informitioi stitt foundlacking.for these three (3) welts.
not six (6), wells and piezometers are at issue here, including three (3) wells,
MW-20 thru MW-22, andfour (4) piezometers; MWg-l, uwi-2, MWlb-1, and
MW(0-2- We appreciate the new survey coordinates providedfor these seven (7)
installations. However, the september 8, 2000 ruc ievised cinyaitea tu provide
well completion diagrams for these seven (7) wells and piezometers. please
provide the required well completion diograms, and geologic logs for these seven
(7) installations. In the event that this information his been totl pluos, provide a
schedule for completion of video and geophysical logging to coliect thi required
information.
RESPONSE
As detailed in IUSA's May I ltl'letter, a search was conducted of IUSA,s Denver
and Blanding office and central files, as well as Umetco Minerals' files in Grand
Junction, with the conclusion that this search located all existing information and
additional searches would be fruitless.
During this search, IUSA located working files and field notes from drilling ofwells MW-20, -21, and -22, as well as similar information for the angle hiles
referenced in question 1.c., below. In addition, IUSA located a Table id pug",
from a report by D'Appolonia Consulting Engineers, which gives data for snattow
borings 9-1,9-2, l0-1, and l0-2. Enclosed as Attachment a-is a summary report,
prepared by Stewart J. smith, project Hydrogeologist, HydroGeochem, Inc.("HGC"), reviewing the data from the well logs, field notes and completion
diagrams found in the files for MW 20 -22, andthe angle holes. Also enclosed as
Attachment B are the Table and pages from the D'Appolonia report.
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Mr. William J. Sinclair
Iune 22,2001
Page 3 of20
(1) Geologic logs - that locate the depth to the upper Brushy Basin shale
contacl,
Well completion diagrams, and
Dates of well installation.
RESPONSE
/r/Vv fu ,/ This is the same request, essentially, as l.A. above. It was earlier agreed that a
€24o'" n c v response to items 1.A. and 1.B. may be combined as one response, and the scoper^Y/ 11,:$H:T:::',':"J:1,,[;t3,'.''ff*,"*J:#f,HT'1,"1*;. ?#*':i;:
files for MW-20, -27, and -22.
Four Geotechnical Borings: GH-l thru GH-4 [p. 4, Item 3.A.41 - -fro* revieu, of
the September 8, 2000 Revised GIR, it is clear that four (4) geotechnical borings
were also installed near the tailings cells in conjunction with wells MW-20 thru
MW-22; as a part of studies completedfor the NRC and EpA (9/s/00 IIJC Revised
GIR, pp. a-5). Apparently these borings were named GH-\, GH-2A, GH-3 and
GH-4. We acknowledge receipt of field and laboratory permeability data.from
these four (4) borings in the September 8, 2000 Revised GIR (Attachment 10,
Tables C-5 and C-6). However, this report also explained how other information
was collected.from these borings, including;
Wireline geophysical logs,
Wireline video logs
Geologic logs
(1)
(2)
(3)
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Please provide reliable survey coordinates
geologic logs made for these four (4) borings.
RESPONSE
and all geophysical, video and
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searches were performed as described under 1.A. above. Geologic logs, field
notes and test data have been located, asy'vell as a video log that relate to at least
two of the borings. A copy of the vided log will be sent under separate cover to
Mr. Loren Morton for archiving and review by personnel from the DRC. A copy
of the video will also be on file at the White Mesa Mill office. The additional
information located for these borings is included in Attachment A to this
submittal, and described in the answer to question A. 1., above.
Because the borings were plugged and abandoned soon after drilling, the locations
were not surveyed, and a visual inspection of the area failed to locate evidence of
the boring locations. DRC has previously indicated that it is acceptable to
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Mr. William J. Sinclair
June22,2007
Page 4 of20
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RESPONSE
Searches were performed as described under A.1. above. IUSA located data from
a D'Appolonia report of lllll1982, and the phase 2 Tailings Management System
Design which included a map indicating where this well would be after Cell 4 was
constructed. In addition IUSA also located the Novem ber 1, 1982 D'Appolonia
Consulting Engineers installation report for Monitor
MW-13, as well as installation notes for MW 13
information is enclosed as Attachments C and I-r
Wells MW-ll, MW-12 and
and 14. This feport and
The Phase Two Tailings
Management System Design was previously sent to DRC. Mw-13 was initialiy
located so it would be on the crest area of the Cell 4 Dike at the time it was
constructed. A re-design of Cell 4 caused the well to be within the interior of Cell44, therefore, it was plugged and abandoned as apartof the Cell44 construction.
Details of the plugging of this well were described in Section 5.5, page 9, and
Appendix G, of the cell 4,{ construction Report, August 2000. This report has
previously been sent to DRC. The lnsafion of MW-13 was approximated on the
drawing.attached in response to item 4., below.
(2),r.u; jwryo-1, lvlyyo-/, tww /_1, MW /_2, MW6_1, and fuIwg_2 _ please
explain what efforts were completed to locate the required v,ell ,o*plutio,
Wells Mlil6-w6-2. MW7-2 l. and
diagrams and geologic logs for these six (6) former wells. In the event
that new efforts find this information, please provide it with reliable
survey coordinatesfor each well at your earliest convenience.
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approximate locations, if surveys are impractical. IUSA has approximated these
coordinates on the map attached in response to item 4., below. A work plan
included in the lgg4lJmetco Report, located during the file search reference in 1.
A- above also indicates the planned locations for these points. IUSA used those
approximate locations to place these on the map, and to estimate x, y and z
coordinates.
Former Monitoring Wells fry. 4, Item 3.A.4 and 3.8.2t - apparently IUC has been
unsuccessful in their attempts to provide information on former monitoring utells
nou, abandoned. However, additional information is required, as follows;
(1)well MW-13 - after IUC's unsuccessful attempt to locate this information
(9/8/00 IUC Revised GIR, pp. l2 a tq, DRC stafffound the reqruired well
MW-L3 data in a March, 1983 Energt Fuels Nuclear (EFN) Cinstruction
Report for cell 3 (Appendix D, see il/r/82 D'Appolonia Consulting
Engineers letter report). Please provide reliable survey coordinates forthis well.
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Mr. William J. Sinclair
June 22,2007
Page 5 of20
(1)
(2)
RESPONSE
Searches were performed as described under l.A. above, and IUSA was able to
locate installation data for these shallow borings. This information is enclosed as
Attachment B, in response to a portion of question 1.A above. These wells were
originally installed within the area now occupied by cell 3. The wells were
plugged and abandoned as a part of the cell 3 construction. The plugging is
described in the Construction Report, Second phase, Tailings Management
System, March 1983, section 3.5, page 3-3.
S*rrvey coordinates for the wells were approximated from the locations shown on
the Second Phase Design, cell 3, Tailings Management System, May l9gl, Sheet2. The approximate location of the wells are indicated on the drawing attached in
response to item 4., below.
xesoturton rtan ana scneawe -lor well Ml4-3 lo. 2, Item 2.c.61 _ we acknowledge
your inability to produce a well completion diagram and geologic log for well
Plan W,2. It
ogic log for wellMW-3. This information is essential for determination of iqurfi, thickiess and
elevation of the Brushy Basin Shale upper conract. At this time, it appears that
there are only two options to resolve this problem:
Wireline Video and Geophltsical Loqs - to locate the screened intervals in
the well, and deptwelevation o.f the Brushy Basin shale upper contacr.
Install a Confirmation Boring - in the event that the geophysical logs are
unsuccessful in locating the Brushy Basin shale upper contact, a
confirmation boring may need to be installed near weil MW-3 to allow an
adequate geologic log to be assembled.
Please provide a plan and schedule for these resolution activities for welt MW-3
within 3)-days of receipt of rhis letter.
RESPONSE
Information searches were performed as described under LA. above. These
searches failed to yield a more detailed geologic log for MW-3. Construction
details for MW-1, -2, -3, -4 and -5 were located during the data search, and have
been included as Attachment E.- d-(tt't {1w "t 4lq"t f,l"* W.{ , / , p. A.
IUSA will continue to
Brushy Basin contact
Basin throughout our
quantified in complete
discuss with DRC the feasibility and need for
at this location. IUSA notes that the top of
defining the
entire site, which is in excess of 5,000 acres,
the Brushy
cannot be
precision, because there would always be too few data
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Mr. William J.
June22,200l
Page 6 of20
points. The site conceptual model, however, which has been published and
available for public comment since the Environmental Assessment was first
published in 1980, supports the general conclusion that the Brushy Basin is
present as a confining unit beneath the site. This is evidenced in a number of
ways, including: pressure head observed in wells drilled to the underlying
EntradaAJavajo sandstones; observed contact in canyons adjacent to the site;
observed contact seepage at the contacts; historical descriptions of regional
lithology, by independent geologists; and observed presence of the contact in
wells drilled throughout the site.
The Environmental Report (Dames & Moore, 1978) describes, in Appendix H, the
construction features for groundwater monitoring wells at the project site. Plate 9,
"Sketch of Typical Ground Water Monitoring Well (for water table of perched
ground water)" illustrates drilling of a well in such a manner that the screened
interval would enable monitoring a saturated zone that could vary somewhat,
based upon the "highest expected water level" and the "lowest expected water
level". The text indicates that the monitor wells should be constructed of 4- to 6-
inch diameter PVC plastic casing (as shown on Plate 9) to a depth below the
"lowest expected water level."
Based on all of the well logs for monitoring wells installed at the Mill, it is
evident that this approach was consistently applied. That is, the monitoring wells
were completed in such a manner that they would be capable of monitoring
groundwater at the lowest expected water level - which would mean that it would
be necessary to drill the wells to the confining unit upon which the groundwater is
perched beneath the Mill, the Brushy Basin. In the case of MW-3, although the
well log does not show the location of the contact with the Brushy Basin, it is
reasonable to expect that the depth of MW-3 is reflective of the approximate
depth to the Brushy Basin at this point, for the following reasons:
1.IUSA has seen no information to suggest that any monitoring wells
at the Mill, except for those specifically defined to be "shallow
wells", were drilled differently from the method set forth in Dames
& Moore 1978. Hence, MW-3 would have been drilled is such a
manner as to be capable of monitoring the "lowest expected water
level", which would have required it's being completed at or
slightly below the top of Brushy Basin.
The depth of MW-3, 96 ft. below it's land surface datum, is only 5
ft. more than the depth to the Brushy Basin at MW20 and MW-17
(91 ft.), and 6 ft more than the depth to the Brushy Basin uitraW-
ZLOO ft.) (These three wells nearest to MW-3 present a reasoiabG
representation of the top of the Brushy Basin). Placing the depth
data for these wells relative to each respective land surface datum,
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Mr. William J. Sinclair
Jwe22,2001
PageT of20
Absent our ability to convince DRC that this additional information adds little to
the overall understanding of the site, IUSA will first consider running a natural
gamma log of the well. Natural gamma has been successfully used at the site to
distinguish the Brushy Basin shale from the overlying Burro Canyon sandstone,
and can be conducted in a cased boring. If the natural gamma log is not
successful in distinguishing the contact, then UJSA will consider drilling an
exploratory hole just down gradient of MW 3 to confirm the lithology at the
location, if DRC and IUSA believe this is essential to protecting groundwater at
the site
Rehabilitation Well MW-4 -we
acknowledge that no additional well construction information is available for MW-4.
Close review of the available IUC information indicates that the bose of the well's
scre ened interval is about l3 feet above the Brushy Basin Shale upper contact (7/94 Titan
Report, Appendix A, well completion diagram). After consideration that chloroform has
been detected in this well, it is clear that the potential exists for dense non-aqueous liquid
(DNAPL) contaminants to go undetected with this well configuration. A.s a result, we see
no other option but to ask IUC to complete one of the.following activities;
MW-3 fits properly in the
of Top of Brushy Basin.
Response (Question 6), and
contour, as shown on the Contour Map
This map is also referenced in a later
is enclosed as Attachment N.
cutting new perforations in the well casing, belou,
to allow well access to the aquifer interval in
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Re-pefforate Well MW-4 - by
the existing screen interval,
question, or
Installation qf a Second Well - in the immediate vicinity of welt MW-4 to provide
a screened interval that is in direct contact with or is screened across the Brushy
Basin Shale upper contact.
Please provide a plan and schedule for one of these activities .for well MW-4 within 30-
days of receipt of this letter.
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Mr. William J. Sinclair
June 22,2001
Page 8 of20
' lal{
RESPONSE
With regard to this technical question, prior to meeting with DRC on April 25, IUSA
asked our independent hydrology consultant to review the data for MW-4. HGC reported -that the well completion diagram is in eruor, and that the geophysical log shows the
correct contact of the Brushy Basin. The geophysical log for MW-4 provided in TITAN,
1994, shows the Bumo Canyon/Brushy Basin contact at 108 ft bls. This depth is
consistent with the lithologic logs of nearby temporary perched monitoring wells TW4-1,
TW4-2,TW4-7, and TW4-8, in which the same contact is at approximately 103 ft, 105 ft,
98 ft, and 105 ft bls, respectively. This would place the base of the screened interval of
Mw-4, which extends to l12 ft bls, approximately 4 feet below the contact.
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The 125 foot depth that has been reported for the Brushy Basin at MW-4 is apparently
based on the well completion diagram provided in TITAN, 7994, which notes a contact
between "sandstone" and "claystone" at 125 ft bls. However, no additional lithologic
information is provided to indicate whether the "sandstone" is continuous from the
surface to 125 ft bls, or whether the "sandstone" is a small lens or thin layer encountered
within the Brushy Basin. Such lens are known to be present within the Brushy Basin
formation. The formation names are also not designated on the diagram.
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With regard to the geophysical log of MW-4,
gamma at 108 ft bls that is consistent with a
response is also consistent with the natural gamma response at the,.Brushy Basin contact
as depicted in other geophysical logs at the site. Because the geophysical log clearly
depicts the Brushy Basin contact at 108 ft bls in MW-4 and because this is consistent
with lithologic logs of nearby temporary wells, the 108 foot depth is considered reliable.
The implications with regard to any chloroform DNAPL that may be present are:
1.
there is a clear response in the natural 1"-
shale or claystone at 108 ft bls. This ffA-
o{<k
Any DNAPL present near MW-4 would be expected to enter the well
casing which is screened across the Brushy Basin contact,
Because any DNAPL present at the Brushy Basin contact near MW4
would be expected to enter the well casing, there is no need to replace or
re-perforate MW-4, and
Based on the results of multi-depth sampling, which indicated that furf O Ichloroform concentrations do not increase with depth in MW-4, and
maximum chloroform concentrations which are more than 3 orders of
magnitude lower than the solubility of chloroform, no DNAPL exists
within or near MW-4.
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(a)
(b)
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Mr. William J.
June22,2007
Page9 of20
Because of the recent letter (June 8, 200i) from DRC to IUSA with respect to the
chloroform investigation, additional comments on this issue will be held for discussions
and response to that letter.
Additional Geoloqic Information [o.4, Item 3 and p. ]1, Item ll.Al - several requested
itemsfrom the February 7, 2000 DRC RFI remainunresolved, including;
A. Missing IUC Reports - severql existing consultants reporls have yet lo bc
provided to the DRC. Please provide the following reports;
(1)Reports Available to Titan Environmental - as listed in Table 2.2 and the
References section of the July, 1994 Titan Environmental Report,
including:
(c)
RESPONSE
February, 1981 D'Appolonia Consulting Engineers, "Assessment
of the Water Supply System, White Mesa Project, Blanding, (Jtah"
July, l99l Hydro-Engineering, "Ground-Water Hydrolog/ at the
White Mesa Tailings Facility"
June, 1994 Peel Environmental Services, "Groundwater Study,
White Mesa Facility"
Searches were performed as described under 1.A. above. IUSA located 1994
umetco, 1993 Peel, and 1991 HydroEngineering Reports. These reports were
sent to DRC as attachments to the May I 1,2007 letter. IUSA has not located the
1981 D'Appolonia report, and regrets it may not be possible to locate that
particular report. However, IUSA did locate three additional reports prepared by
D'Appolonia, dated September 9, September 28, and November 30, 1981. TheseIr d..l ^,.,*q {-d A D'Appolonia, dated September 9, September 28, and November 30, l98l
l1r'4 rtt -, I " reports are enclosed as Attachments F, Q and H to this submittal, Y": yYo *o -r- .- " {:;::;":,:,::;:;; * hto,,. rbftc-
(2)Report(s) Prepared .for NRC / EPA - including reports to document
drilling and hydrogeologic investigations related to existing wells MW-20
thru 22 and geotechnical borings GH-l thru GH-4 (see discussion above).
RESPONSE
Searches were performed as described under 1.A. above. During the search of the
Mill records, IUSA located some working files, field notes and data.
These additional wells and borings were installed as part of the investigation
performed by Umetco during the time that the Mill was being considered as a
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Mr. William J.
June 22,2007
Page l0 of20
candidate site for disposal of the Monticello tailings. As we discussed, after the
decision was made by DOE not to relocate the Monticello tailings to the Mill, the
work on these investigations abruptly ceased. The information located on these
wells and borings is attached to this submittal as Attachment A in response to
question 1.C above.
(3)Aqt Other - report related to groundwater hydrolog,, or geologt of the
site.
RESPONSE
Searches were performed as described under l.A. above. As stated in Response
3.A.(l), above, IUSA located three additional reports prepared by D'Appolonia,
dated September 9, September 28, and November 30, 1981. These reports are
attached as Attachment F, G and H to this submittal.
Dames and Moore Borings 3 and 9 [p. 4, Item 3.A.21 - please provide reliable
survey coordinates for these two borings at the facility.
RESPONSE
IUSA has approxirnated the location of these borings on the drawing attached in
response to item 4., below. The locations were obtained from information
contained in the original documentation for the Dames & Moore borings. DRC
agreed during the April 25tl'meeting that it is acceptable to approximate tcations.
Test Weil 17 (East o-f Mill Site) [p. 4, Item 3.8.11 - u)e recognize that IUC believes
this former test well has been plugged and abandoned. However, please provide
the following informationfor this well; date of well installation, geologic log, well
completion diagram, reliable survey coordinates, and a plugging and
abandonment report.
RESPONSE
Searches were performed as described under 1.A. above. IUSA located, during
the search of the Mill records, Iogs and completion descriptions for the deep
wells. This information has been organized in the form of a Deep Well Summary
Memorandum describing the test well and other deep wells, which includes a drill
date (February 23, 1977) for the test well. This summary information is included
as Appendix I to this submittal. A visuatr inspection of the location of the Test
Well confirms that the well has not been plugged. The actual location of the Test
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Mr. William J. Sinclair
Iune 22,2001
Page I I of20
l'lurrir,, I p^'lw'
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ry
Well was not surveyed during the August 2000 LANDesign field work, but the
@tianr, hae "heffir epproxiga&d on the map provided in response to item 4.,
below.
Five Dr:t wells and Piezometers [p. 5, Item 3.8.31 - apparently IUC was
unsuccessful in its attempts to locate the requested informationfor dry wells MW-
16, MW9-1, MW9-2, MW10-1, and MWl0-2. However, additional information is
required, as.folIows:
(1)well MW-L6 - DRC staff found a well completion diagram and geologic
log.for this well in the February, 1993 Peel Environmental services
Report (Appendix A).
(2)Wells MW-16. MI4t9-1. MW9-2, MWt0-t, and MWI0-2 - please explain
what efforts were completed to locate the required well completion
diagrams and geologic logs for these.four ft) dry wells. In the evint that
new e.fforts find this information, please provide it at your earliest
convenience.
RESPONSE
Searches were performed as described under 1.A. above. IUSA located, during
the search of the Mill records, logs for the wells and completion descriptions.
IUSA has also located packer tests and well logs for MW-16, -17, -lg and -t9.This information is enclosed as Attachment J. Information on nested wells MW-9
and MW-10 has been included as Attachment B in response to question 1.A.
above.
E.Two Ne 5. I
efforts were made by IUC to locate
borings. Should new efforts locate
convenience.
RESPONSE
lp. 5, Item 3.8.4J - please explain what
requested information for these two (2)
data, please submit it at your earliest
4A
the
this
Please see response to question 1.C. and 3.A.(2) above.
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acknowledge subntittal of two (2) IUC maps of thefacirity, includiig.
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Mr. William J. Sinclair
June 22,2001
Page 12 of20
baqk lglhgqlioinal eleyaliolL&UH$np Use of the original
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August 28, 2000 LANDESIGN site control Map - prepared by LANDESIGN
Engineers, Surveyors and Planners of Grand Junction, Colorado, Sheet t of t,
Rev. I (submitted as a port of the september B, 2000 IUC Revised GIR). This
drawing included a data table of survey coordinates, ond a simple relative
position plot for many of the requestedfocilities at the white Mesa site.
IUC Topoeraphic Map - provided to the DRC by Mr. Ron Hochstein of IIJC on
June 13, 2000. This detailed topographic map, prepared by an unknown party,
provides location details for many of the site facitities, including but not limited
to: footprint of tailings ponds, tailings pond berms, site roads, mill site, mill site
product and process storage tanks, ore storage pad, wildlife ponds, topsoil
storage pads, mill process buildings, administration building, current truckicale
building, and mill site process wastewater pond ("Roberts pond"). This map utas
reportedly prepared qt I :3,600 scale (1" : 300 ft), as derived -fro*photogrammetry data collectedfor the site in February, 1999.
Review of these two (2) IUC maps shows that much of the information requested in the
February 7, 2000 DRC RFI has been provided on one mqp or the oiher, with the
exception of thefollowing items and concerns;
C.Site P - for ease of
reference and to .facilitate preparotion of future DRC hydrogeo[ogic cross-
sections and other maps it is essential for alt the required elements to be
presented on a single map. For this reoson, DRC staff request that IUC combine
the above site control and topographic maps into a single map. please ensure
that the accessible discharge related facilities are shown on tie combined map,
including, but not limited to [p 5, Item 4.A.] thru 5, and 4.8.2J: tailings ponir,
tailings pond berms, existing groundwater monitoring wells,-former wells and
piezometers, water supply wells, exploratory borings, dry wells and piezometers,
and the chloroform investigation temporary wells.
RESPONSE
IUSA has enclosed, as Attachment K, a copy of a topographic map titled "International
Uranium (USA) Corporation, White Mesa Mill, Topographic Map -- 1999 Contour Base,,,
indicating the location of all topographic features on the site, as well as monitor wells,
former wells and borings, water supply wells and chloroform investigation wells.
As discussed with DRC, the existing grid system and vertical datum of the most recent
topographic maps (1999) do not line up exactly with the x, y and z coordinate systern
established during the August 2000 survey completed by LANDesign, Inc. JtISA,heevaluatedtheoptionsforresolvingthisconflictandhas@
generation of
elevation datum will eliminate
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Mr. William J. Sinclair
Iune 22,2001
Page l3 of20
potential conflict with years of historical data and reports. Thercf/re, elevation data
presented to DRC since August of 2000 will be adjusted by a constalt factor to bring the
information back into conformance with the historical data and reports. IUSA has
enclosed, as $ttachment L, a revised listing of the featuros surveyed by LANDesign in
August of 2000, using the new elevation datum. Additional features requested Uy bnC
have also been added to the listing of x, y and z coordinates. IUSA will make the
necessary adjustments in data and spreadsheets that IUSA will maintain for the Mill,
which will save DRC the burden of changing values. This information will be submitted
under separate cover.
Until new aerial photography can be obtained and topographic maps generated, IUSA is
submitting the attached drawing based on DRC's statementi that its interest is in knowing
where wells are located relative to features of the site, such as ponds or stockpiles. IUSAwill continue in its efforts to resolve survey issues, and wili, upon resoluiion of such
issues, then prepare updated cross sections and other maps, including perched zone water
elevation contour maps and water surface elevation
"onior. maps.
-These
contour mapswill be periodically updated by IUSA and provided to DRC.
Nearby Stockwatering Wells [p.6, Item 4.A.61 - nearby stoch,vatering wells
constitute potential points of exposure for the facility. Please provide survey
coordinates, including ground surface elevations for both the Jet Pr*p and Jones
stoch,vatering wells located near the focility.
RESPONSE
DRC agreed that it is acceptable to approximate locations. The map enclosed as
Attachment K indicates the approximate location of the Jones Well, and the coordinates
are listed on Attachment L. The Jet Pump Well is located off the northern limits of the
attached map and is not shown. The coordinates of the Jet Pump Well are indicated on
Attachment L.
Nearht Contact Seeps and Sprinqs [p. ]3, Item l3t - nearby seeps and springs at
the edge of White Mesa also form potential points of exposuri yo, tlri y"itiry.
Please provide survey coordinates and ground surface elivationi for all contact
seeps and springs near the facility.
RESPONSE
In the September 8, 2000 GIRRP submittal to DRC, IUSA submitted aerial photos,
Attachment 10, showing vegetative patterns indicative of seepage along the nearesi
canyon margins, which, based on our meeting of April 7, 2000, we understood to be
sufficient for the present purposes. As reported in the GIRRP, IUSA could not, however,
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Mr. William J. Sinclair
June 22,2001
Page 14 of20
Station No.
GlR
G3R
provide detailed land survey locations for all contact seeps and springs, because such
features vary depending on a number of hydrogeologic conditions. IUSA submitted a
current map showing water surface elevations for the perched groundwater zone. The
water surface elevations in the perched groundwater zone generally decrease near the
margins of the canyons, where the perched groundwater zone thins and is discharged.
Plate 2.6-10, in the Environmental Report White Mesa Uranium Project San Juan
county" Utah for Enerey Fuels Nuclear. Inc. (Dames & Moore, January 30, 197g), the
relevant portion of which are contained in Attachment I of IUSA's September 15,2000
transmittal to UDEQ, S ter B
Other Water Oualit), Studies For The White Mesa Mill, lists four springs which were
among locations of groundwater sampling stations in the proposed project vicinity during
1977-78. The locations of these stations were described in the Environmental Report as
follows:
Location
spring in corral creek, 500 feet upstream of earth dam and surface
water station S3R, upgradient of project site
Spring near Ruin Spring Point, drains to Cottonwood Creek
downgradient of project site
spring near base of Dakota sandstone cliffs about 500 ft east of
jeep trail, drains into Cottonwood Creek, downgradient of project
site
G5R Spring about 1,500 ft east of Westwater Creek in canyon, to west
and possibly downgradient of project site
As it is evident that the objective of these early siting studies was to locate any potential
water sampling locations in or around the project site in order to establish baseline water
quality conditions at such features, IUSA will use the above information regarding these
springs to guide it's search for springs, and will then attempt to produce coordinates and
elevations for the locations of these particular springs.
To provide approximate coordinates for these seeps or springs, IUSA will conduct field
reconnaissance to attempt to define locations of such features and will utilize hand-held
GPS with a resolution of */-5 feet *to locate the x, y, and z coordinates for them.
Information generated will be compared against historic maps to verify locations and
elevations. IUSA will present these findings to DEe by the end of July.
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Mr. William.I.
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Page 1 5 of20
Confirntation qf DRC Eslimctted Scalehouse Leach-field Coordincttes fnew item| -
after comparison of the site plan map from the october 4, 2000 chloroform
investigation report (Figure I l) with the IUC topographic map provided on June
13, 2000, v,e have estimated the survey coordinates of the septic tank drainfield
located ct short distance Southwest of the existing truck scale house. Please
confirm the accuracy and content of the DRC estimated survey coordinates for
this leachJield, as provided in Table l, below;
Table DRC 1. Estimated Survey Coordinates; Former IUC Truckscale House Leachfield
Corner Easring (feet)Northing (feet)
Northwest 2,5 80,7 3 5 3 22.3 30
Northeast 2,580,800 322,3 30
Southeast 2,580,800 322,260
Southwest 2,580,7 3 5 322,260
RESPONSE
The searches defined above under l.A. yielded original engineering drawings which
depict the design location of the historic scalehouse leachfield. IUSA has used this
historical information to locate the Scalehouse Leachfield on the drawing enclosed as
Attachment K. The coordinates are also listed on the summary of coordinates and
elevations enclosed as {\lleghrnent I.,
Submittal qf Survey Coordinates -for Related Facilities fnew iteml - after review
of the IUC information provided to date, DRC staff have determined that
additional related facilities at the site need to be located on the combined site
plan and topographic map, including but not limited to;
o/L
1tt
"42)
(3)
Existing Administration Buildinq Septic Tank Drainfield - reportedly
located a short distance North-Northwest of the truck scale house.
Former Administration Building Septic Tank Drainfield -
southeast of the main ffice building.
Wastewater Tank and
the location of the above ground tank that was once
side of the mill administration building and the pipe
mill site wastewater catch pond (" Roberts Pond').
once located
n,, *J, ^- dr"i*
including
Iocated on the North
that drained it to the
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Mr. William J.
Itne22,200l
Page 16 of20
Former Mill Site Sedimentation Pond - also known as the /ly-ash pond
(6/79 D'Appolonia Design Report, Sheet 4 o.f l6)
Former Solid Waste Landfill - located near one of the wildlife ponds East
of the mill site.
Please ensure that the survey coordinates for all of the related.facilities outlined above
are accurately plotled on the combined map also requested.
RESPONSE
The searches defined above under
depict the design locations of these
features and indicated them on the
coordinates are also listed on the
Attachment L.
1.A. yielded historic engineering drawings which
features. IUSA estimated the coordinates of these O/(
map enclosed as Attachment K. The features and
summary of x, y and z coordinates enclosed as
Explanation.for Increasinq Groundwater HeadTrends [p. ]4, Item l4/ - we appreciate
the description o.f the number of wells and the magnitude of head increase seen in wells
at thefacility (9/8/00 IUC Revised GIR, p 26) However, as outlined in the March 13,
DRC Request .for Confirmation (RFC) letter, DRC staff will complete the final water
table contour and isopach thickness mapsfor the shallow aquifer (3/13/01 DRC letter,
pp. 4-5). This leaves two remaining items from the February 7, 2000 DRC RFI that
continue lo be unresolved, as outlined below:
A. Plan and Schedule.for Additional Monitorins Wells or Piezometers [p.]5, Item
14.CJ - v,e have reviewedyour September 8, 2000 response andfound itfailed to
address the need to identifl the root cause for the increasing head trend. As
explained previously it is likely that the rising groundwater levels observed is
likely due to some artificial source of groundvtater recharge. Consequently, such
a study v,ill require the installation of additional wells and/or piezometers in
order to identify the source of the man-made recharge. In order to facilitate this
effort, DRC staff have prepared several figures to guide your planning, as
described belov,:
(1)DRC Coruected Well H:tdrographs - have been prepared for existing
monitoring wells at the facility, based on corrected groundwater elevation
data provided you in the March I3, 2001 DRC RFC letter, see Attachment
l, below. These hydrographs establish that the wells with the greatest
increases in groundwater head include (in decreasing order): MW-4, MW-
19, MW-18, and MW-ll.
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Mr. William J. Sinclair
June22,200l
Page 17 of20
(2)DRC Water Table Equipotential Map: September, 2000 - this water table
contour map prepared from IUC water level data collected in September,
2000 includes groundwater head data from most of the existing
monitoring wells at the site, plus all the chloroform investigation wells
recently installed. Review of this DRC map suggests that the artificial
groundwater recharge source is located North and East of wells MW-4
and MI4t-19, see Attachment 2, below.
DRC Delta Head Contour Map - the magnitude of increased head in each
IUC well was calculated by DRC staff after review of the hydrograph
trends seen in Attachment I. DRC staff took selected heads from the
spring of 1983 as representative of baseline conditions at the facility.
From this, increases in head u,ere calculated for each well thru Summer,
2000. These head increases (Delta Head values) were then tabulated and
contoured on a map; see Attachment 3, below. This map suggests that the
artificial source of groundwater recharge is located east of MW-4 and
MW-19.
(s)
Please provide a plan and schedule for the installation of additional monitoring
wells and/or piezometers to locate the source of the artificial groundwater
recharge apparent North and East of wells MW-4 and MW-L9.
RESPONSE
IUSA has, in the Chloroform Investigation, provided (based on discussions with
DRC) qualitative data as to potential sources of increasing water levels observed
on the eastern portion of the Mill property. However, we understand DRC's
request that IUSA further investigate the increasing water levels in certain wells.
In general, the wells exhibiting water level increases are in the portions of the site
that early investigators indicated would be most likely to exhibit naturally
occurring groundwater mounding. For example, the early Mill siting
investigations reported the probability of natural-occurring groundwater
mounding beneath the project site. In particular, the Environmental Report
(Dames & Moore, 1978) stated, in Appendix H:
"lt is probable that slight ground water mounding may occur in the
east-central part of the mesa. Ground water levels may be highest
in the center of the mesa, coincident with the highest land
elevations, and lower to the east and west where ground water can
drain from the mesa through springs and seeps in the canyons of
Westwater, Cottonwood and Corral Creeks."
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Mr. William J. Sinclair
June 22,2007
Page 18 of20
"lt appears that the shallow ground water forming the water table
throughout the project vicinity has a gradient toward the south-
southwest. The general ground water gradient appears to be
related to the general topographic gradient; i.e., the highest
elevations are generally at the northeastern edge of the project site
near Highway 163 and the lowest elevations are at the property,s
southwest corner."
As later reported in Erriro*"rtul As".r-..rt propor"d Lund E*"hurn"
Between Enerqy Fuels. Ltd. And U.S. Bureau of Land Manasernenf V/hire MecqI
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Uranium Project San Juan County. Utah (Dames
probability of naturally-existing groundwater
substantiated by water levels measured in drill holes
the White Mesa mill (Dames & Moore,1978).
& Moore, July 1980), the
mounding was "partially
and wells in the vicinity of
IUSA concurs with DRC that the source of apparent recharge is most likely
northeast of the Mill. In response to DRC's request for a plan and schedule for
either additional monitoring wells or piezometers, as well as similar related
questions raised in DRC's June 7, 2001 letter to IUSA regarding the Chloroform
Investigation, IUSA requests the opportunity to meet with DRC to discuss
specifics of the following concepts IUSA would propose to include in our field
investigations. Specifically, IUSA anticipates that the field investigations would
include siting of approximately two to four piezometers in a., ai"u north and
northeast of monitoring wells showing the greatest increases in water levels.
IUSA would include scheduled, regular surveillance of water levels in those
piezometers until the water levels reach post-drilling equilibrium, and continue
such scheduled water level measurements to evaluate the water table gradient.
Also, as discussed at the April 7, 2000 meeting, IUSA will continue to generate
updated water table plots incorporating these data, for the purpose of evaluating
how the perched groundwater zone behaves during this investigation period, and
to provide these updated plots to DRC.
In addition, IUSA anticipates performing pumping tes&, in those urells extaibiting
significant water level increases to assess potential changes in their hydraulic
performance due to water level increases and to relate the implicationi of the
pump test results to groundwater protection issues and the Chloroform
Investigation. These field investigations will therefore be designed to address the
data objectives required to respond to DRC's questions regarding the Chloroform
Investigation, while also allowing IUSA to further investigate the source of what
appears to be man-made recharge originating to the north and northeast of the
property.
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I Mr.wiuiamr.Sinclair \ 1 t .IJ.1.*i"")lrlp:<"nvn'E'oJune22,200t r \ I lo,r^,
I t"*l,l
It 'ort - L " 'tu
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, \ ,,.r{r,HI nrea ItJf ffi?"iln$"',yit "ilX ?ffill';'H*.'ffi,:,::,m',"1'.'*.J*,1?
thickness maps for the perched groundwater being monitored at the Mill. AnI :*:x.'ti;,#il:"';:13';:l:: lHf ll*mgllxt*r**1,*n*:
Enclosed as Attachment M are maps depicting the Water Level Contours for
I December 2000 and March 2001, and Saturated ihickness of Perch ed, Zone.
B. Additional Groundwater Ouali\t Data [o. ]5, Item I4.DJ -u,e acknowledge thar
your chloroform investigation report will address groundwater quality issues and
the potential .for other contaminants as indicators of chloroform discharge
(10/4/00 IUC Chloroform Report). We have also received your September 15,
2000 Groundwater Background Water Quality Report. This issue and both of
these reports will be reviewed at a later date.
6.Shallow Permea s of N l1-1
Item 11.8J - the September 8, 2000 IUC response referred toyourfailure to loiate copies
of original laboratoryt permeability data. In contrast, our original February 7, 2000
request was .for copies of notes, calculations, and data for the fietd permeability tests
conducted on monitoring wells, borings, and piezometers at the facility. To reiterate,
p I e as e pr ov i de the .fol I ow ing ;
Field notes and data collectedfrom eachfield permeability test, and
Detailed description and justification of calculations and analysis methods used
to determine permeability. In the event that test data from certain wells v,as re-
analyzed, please explain why re-analysis was required.
After submittal and review of this information, DRC staffwill prepare a summary table of
all available pernteability data and askfor IUC concurrence.
B.
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In the event thal the information requested
plan and schedule .for field permeability
piezometers at the.facility.
,
ot-i)'' 1s,(,i-u,-' *- 'fl"'
RESPONSE flu *WtLnro' 2e
above cannot be provided, please submit a
testing of all shallow aquifer wells and
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A.^t< *"p1*ftl \
Searches were performed as described under l.A. above, and IUSA was successful in
locating some new data. This information is included in the response to item l. A. above.-
In addition, HGC is, compiling some of its field notes and a discussion of analytical
techniques for the te{ts conducted at MW-4 and MW-19. Based on this complete review
Il,\ 614,,t llG , (?" u,rT- Z
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Mr. William J. Sinclair
June 22,2007
Page20 of20
of available hydraulic data, IUSA is proposing to conduct pump tests on selected wells to
provide additional information.
The drilling and logging data indicate that the physical characteristics of the rocks
beneath the Mill vary considerably both vertically and laterally. Therefore, in June of
2000,IUSA discussed with DRC the appropriateness of attempting to use the limited data
available to create a "contour" map based on specif,rc data for specific bore holes. The
feasibility of such an approach may be limited in view of the fact that hydraulic I +-- "properties of this stratum, which have been determined from 12 single, well- /\f W
pumping/recovery test*s and from 30 packer tests yielded a broad range oihydraulic
properties, which will not reasonably lend themselves to a defensible contouring tt , I
approach. Furthermore, the depositional history and composition of the Burro Canyon - -l'Lyy
Formation is such that one would expect random variability rather than mapable contours
from one point to another. Given these limitations, IUSA asked HGC to attempt to show
general areas with similar permeability values based upon selected data available for the
saturated zone, which is presented as a Perched Zone Permeability map. In addition,
HGC prepared a Contour Map of Top of Brushy Basin. These two maps are enclosed as
Attachment N.
If you have any questions or comments regarding this letter, please contact me at (303) 389-
4160.
Harold R. Roberts
Vice President - Corporate Development
Enclosures, Attachments A - N
Larry Mize, UDEQ Division of Water Quality
Loren Morton, UDEQ Division of Radiation Control
R. William von Till, NRC
Michelle R. Rehrnann
Stewart J. Srnith
Roman Pyrah
cc w/out att: Dianne Nielson, UDEQ
Dave Arrioti, S.E. Utah Health Department
Ron F. Hochstein, IUSA
David C. Frydenlund, IUSA
Yours
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Attachment A
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FilDRO GEO CHEM, iNC.
Enui ron vn en t a I Sci en re t' k chn ol ogt'
hme2l,200l
Mr. Harold Roberts
International Uranium Corporation
Independen ce Plaza, Suite 950
1050 lTth Street
Denver, CO 80265
Re: Review of 1994 Drilling Program Results
Dear Harold,
This letter report provides a sunmary and interpretation of field tests conducted at the
White Mesa Uranium Mill Site near Blanding, Utah, during 1994. The testing was conducted
primarily by Peel Environmental Services, and consisted of the installation of 3 perched
groundwater monitoring wells and 4 angled geotechnical borings to further characterize the
hydrogeology of the site. A summary of the site hydrogeology is provided in TITAN, 19941. In
brief, the site is underlain by the Dakota and Burro Canyon sandstones, which are underlain by
the Brushy Basin shale member of the Morrison Formation. The Burro Canyon sandstone hosts
a thin saturated zone perched on the underlying Brushy Basin shale. Approximately 100 vertical
feet of unsaturated Dakota and Burro Canyon sandstone separate the Mill facility from the
perched water zone beneath the site.
Although the data from the drilling, logging, well installation, and permeability testing
was compiled at the time of collection, a final report for the work was never completed and in
fact, some of the initial calculationo included in the report wre in elror;. At the request of IUC,
this letter report has been prepared for the purpose of serving as a final report for the work based
on a review of the compiled data, review of an incomplete, tentative, and preliminary report
prepared by Peel Environmental Services, and examination of drill core and video logs from
geotechnical borings.
' ttTAN. 1994. Hydrogeological Evaluation of White Mesa Uranium Mill. Prepared by TITAN Corporation.
Gl7 I 8000\Reports\06080 I MR.doc
5l West Wetmore, Suite l0l Tucson, Arizona 85705-).678 rs'520.293.1500 52O.293.1550-Frx 80O.727.5547-Toll Free
Mr. Harold Roberts
June2l,200l
Page2
Description of Work Performed
Work at the site included the following:
1) Installation of perched groundwater monitoring wells MW-20LMW-21, and MW-
22 (Figure 1). G*'1tt'z t.
2) Installation of geotechnical angle borings GH-94-1, GH-94-2A, GH-94-3, and
GH-94-4 at the margins of and extending beneath tailings cells 3 and 4 (Figure l).
3) Coring, lithologic logging, and geophysical logging of the angle and vertical
borings.
4) Video logging of some of the angle borings.
5) Field and laboratory permeability testing of the Dakota, Buno Canyon, and
Brushy Basin.
All borings installed at the site were used to provide lithologic and hydrologic
information including :
l) Lithology of the Dakota and Burro Canyon sandstones and of the Brushy Basin
shale.
2) Permeability of portions of the Dakota and Burro Canyon sandstones and of the
Brushy Basin shale.
The angle borings were installed to further characterize the lithology and rock quality
beneath the tailings cells and the vertical borings (completed as perched groundwater monitoring
wells) to provide additional information on hydraulic gradients and saturated thicknesses of
perched water downgradient of the existing perched monitoring well network.
Downhole constant-head packer tests were conducted at various intervals within the
Dakota, Burro Canyon, and Brushy Basin units that were intersected by the angle borings, and
within portions of the Brushy Basin intersected by the vertical borings. Only the upper portion
of the Brushy Basin was penetrated by the borings. Slug tests within the perched groundwater
zone were conducted in MW-20 and MW-22 after their completion as monitoring wells. These
tests were used to provide estimates of the horizontal permeability of the tested intervals. Core.
ryles from the &rohy Basin were collected from vertical borings MW.ZI and MW-22, and
submitted to Western Engineers, Grand Junction, Colorado, for analysis of vertical permeability.
Perched monitoring wells MW-20, MW-21, and MW-22 were installed at the locations
shown in Figure 1 by drilling a l0-inch diameter surface hole to a depth of approximately 20 feet
below land surface (bls) and cementing an 8-inch diameter steel surface casing in place using a
5oZ bentonite cement slurry. Each vertical boring was then rotary drilled to a depth of
approximately 70 feet bls using a7 'ls-inch bit. Borings were then advanced to total depth using a
37ls -inch coring bit. MW-20, MW-21, and MW-22 were cored to total depths of approximately
G:\7 I 8000\Reports\06080 I MR.doc
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Mr. Harold Roberts
Jlur:re2l,200l
Page 3
r'n4.5 feet,I17 feet, ana4qO feet bls, respectively. Each boring penetrated approximately 20 to
25 feet of Brushy Basin shale.
-l.^tua(>-
'!u''., *,V, Wire line geophysical logs (natural garnma and neutron) were then run. Constant head
h '1"- t packer tests within the Brushy Basin were also performed, then each hole was cemented up to
flriy the Brushy Basin/Burro Canyon contact (approximately4,il'bls*in **lV-20, 97 feet bls in
MW-21, and/20 feet bls in MW-22), and completed as a perched groundwater monitoring well.
MW-20 was screened between approximately 80 and 90 feet bls, MW-21 between approximately
70 and 90 feet bls, and MW"22-'berffisen approximately80 and 1.30.fect.bl6. Field notes and
lithologic logs are provided in Attachment l.
Angle (geotechnical) borings were installed at the locations shown in Figure l. GH-94-l
and GH-94-2 were drilled at an azimuth of N30'E and an angle of 40o to the vertical. Each hole
was cored from the top of the Dakota to the total depth of approximately {65 feet. GH-94-1 was
drilled with water and GH-94-2A with polymer. The polymer was reportedly needed to enhance
core recovery. Constant head packer tests were conducted at various depth intervals in both
borings, and natural gatnma and neutron geophysical logs were run. A video log was run on
GH-94-2A. Both holes were abandoned by plugging with a S%obentonite cement slurry.
GH-94-3 and GH-94-4 were drilled at an azimuth of 150o and an angle of 40o to the
vertical, and logged in the same fashion as GH-94-l and GH-94-2A. Logging included natural
garnma, neutron, and video. A polymer was used to drill both. Constant head packer tests were
also performed on the borings at various depth intervals after washing to remove the drilling
fluid. Both borings were abandoned in the same fashion as GH-94-l and GH-94-2A.
Raw data (Attachment 1) from constant head packer tests was used to calculate the
permeability for each interval tested using the following formula as designated in the preliminary
Peel report:
Glr'7.('lt
h.,
K_{,n111r
a
2rLH *
L,t ,.,SR i ,-q
K: permeability (cm/s or fl/min)
Q: flowrate (cm'/s or f imin)
L: test interval length (cm or ft)
H: total hydraulic head (cm or ft)r: borehole radius (cm or ft)
Results
Well completion and geophysical logs are provided in Attachment 2. Results of slug
tests and laboratory permeability tests are provided in Attachment 3. Table I summarizes the
Gl7 I 8000\Reports\06080 I MR.doc
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Mr. Harold Roberts
June 21,2001
Page 4
results of the permeability tests. These values may be slightly different from those previously
reported because of the recalculation based on the raw data.
Based on the information provided in the Attachments, the video logs of GH-94-2A and
GH-94-3, and examination of core from the angle borings stored at the site, the following
observations were made:
1) The Dakota and Burro Canyon sandstones are predominantly composed of hard, a/<
fine- to medium-grained locally cross-bedded sandstones with interbedded
conglomeratic layers, and layers of shale and claystone.
2) Few fractures are present in the cores or observable in the video logs. Where -!^I#r
present fractures are closed and/or sealed with gypsum. Partings in the core are !!_'ir" u
primarily related to bedding planes, and shale and clay interbeds.
3) Video logs show conglomeratic zones, occasional cross-bedding features, and
scour features within planes perpendicular to the direction of drilling. These
scour features, which often appear only on one side of the boring, are most likely- o;
related to scoring by the drill bit.
4) Video logs also show washouts in claystones, small washouts parallel to bedding
planes in sandstone, and smaller washouts of finer-grained matrix material
surrounding larger clasts in conglomeratic zones.
The permeability test results are similar to values collected from previous site
investigations and show the average-horizontal pe-rmeability of the Dakota and Burro Canyon 1,t^;- tt: t.p.
sandstone to be on the order of l0-' cm/s to l0'o cm/s. These values are consistent with the
lithology of these units. The ayerage vertical hydraulic conductivity of the upper portion of the
Brushy Basin is on the-order.of l0-u cm/s, or less, typical for a tight clay material and consistent
with its functioning as a perching layer beneath the site. Furthermore, because the upper contact
of the Brushy Basin is an erosional surface and therefore weathered, the measured vertical
hydraulic conductivities are likely higher than would be expected for deeper, less weathered
portions of the unit.
Conclusions
Results of the 1994 drilling and testing program support previous investigations at the
site that characterize the Burro Canyon and Dakota sandstones as relatively low permeability
formations underlain by a very low permeability unit (Brushy Basin shale) that supports the
perched water zone at the site. Examination of lithologic logs, core samples, and video logs
from angle borings indicates that fluids present in the subsurface will be transmitted primarily
via intergranular porosity, and that minor fractures, because they are few in number and are
closed and/or filled with gypsum, are expected to have a negligible effect on fluid movement.
This is corroborated by the results of pqleslqconducted in perched wells at the site, which arelrr \\ Ut"Jr*, c.dio.., *L t]- t.{. . at !,n..T.,*, n*{oo*-t',,- Y1..a Re r,rve-,r1 J,fi Aa hltJ-s d, (A.
G17 I 8000\Reports\06080 I MR.doc
L*!l a*4'.)
Mr. Harold Roberts
June 21,2001
Page 5
consistent with flow through a porous medium and do not display features characteristic of a
fractured medium. These conclusions are also consistent with those presented in the preliminary
Peel report.
TABLE
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TABLE 1
HYDRAU LIC CONDUCTIVITY MEASUREMENTS
WellNo.
lnterval
(down hole depth
,* in feet)
Type of Test Formation
Horizontal,
Hydraulic
Conductivity
(cm/sec)
WMMW-20 86.4-89.08 Sluq Burro Canvon 5.29E-06
'110.5-114.5 Constant Head Brushy Basin 2.1E-07
WMMW-21 ,-,109.5-117.0 Constant Head Brushv Basin P8.10E-06
WMMW-22 76.0-120.0 Sluq Burro Canvon 2.02E-06
130.0-134.0 Constant Head Brushv Basin z,'tlo Take
GH-94-1 I 34.0-40.0 Constant Head "Dakota "'5.9E-06z 40.0-50.0 Constant Head "Dakota 14.5E-05
1 70.0-80.0 Constant Head ,tlurro Canvon ir 6.3E-0s
92.0-100 Constant Head Eurro Canvon 5.1E-04< 103.0-110.0 Constant Head Eurro Canvon 6.3E-04
130.0-140.0 Constant Head fla$pgsh+Basiff 2 1.4E-04
163.0-'165.0 Constant Head -tlrushv Basin r,,,t{o Take
GH-94-24 34.0-40.0 Constant Head pDakota 2.5E-052- 32.5-40.0 Constant Head Dakota 7.2E-04g 50.0-56.0 Constant Head Dakota - 8.8E-05 ,
I
,
60.0-70.0 Constant Head y'Burro Canvon 4.0E-05
70.0-80.0 Constant Head rBurro Canvon 1.6E-04, 80.0-90.0 Constant Head rBurro Canyon 1.2E-04
? 138.0-144.0 Constant Head Brushv Basin ,.-No Take
GH-94-3 155.0-161.0 Constant Head a€rushy Basin
7 138.0-144.0 Constant Head 2" BmshY4la<ia 4..2E-06
WellNo.
5al. L, s.-,1lnterval- /''
(down hole depth
in feet)
e \Tnb@ 112.5 F
Type of Test
/{^L
Formation
J/edical
Hydraulic
Conductivity
(cm/sec)
WMMW-2.1 106.5-107.0 1 Laboratory Brushv Basin 1.15E-10
114.5-115.0 sLl Laboratorv Brushy Basin 4.00E-07
WMMW-22 122.2-122.7 r\Laboratory Brushv Basin 1.10E-06
126.3-127.2 r\Laboratorv Brushv Basin 6.94E-10
133.3-133.7 s, l+z * Laboratory Brushv Basin 1.58E-09
137.3-137.8c\-\Laboratorv Brushv Basin 5.95E-04'
14-
' Note: This value is reported to be anomalously high due to a vertical fracture present in the core sample.
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G:\7 I 8000\R€ports\06080 I MR.doc
FIGURES
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ATTACHMENT 1
Drill Hole No. t4 u - ?-o ulJ.,s 3 !- i'i' ZZ e
Sheet No. of
Construction ls'f,
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DESCRIPTION REMARKS
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CONSTANT HEAD PRESSI.'RE TESTS
Well Number: WMMW-20
White Mesa Project
San Juan County, Utah
Pressure Test No. L
Date:8/13/94
Elevation: 5538' GL Estimated
Total Depth: 114.5'
Gound Level to Gauge;&Oi
Hole Diameter: ffi,@' (0.32')
DePth:
l ne <' - 11 a Rr -a- T ^bMeasured: 108.5' - 114.5'
Test Interval: 5.0'
Packer Pressure: 300 Psig
TIME
09:10 am
09:15 am
09:20 am
09:25 am
09:30 am
09:35 am
09:45 am
10:07 am
1.0:15 am
1.0:34 am 130 psig
10:40 am 130 psig
L0:45 am 130 psig
1.0:50 am 130 psig
i0:55 am ffi#alt
11:00 am 150 psig
Remarks: None
PRESSURE FLOW RATE
130 psig 0.40 gpml
130 psig 0.25 gpm ( 0.,, --
130 psig 0.20 gpm ( t
130 psig 0.13 gpm I
130 psig ' 0.77 gpm ilQpsig 0.05 gpml-trrt;rz
o.ro gp- - ?e,*r- r'' !(u'\, rqo'c.'f5'
150 psig 0.20 gpm Surge; packer leak?
150 psig 0.15 gpm Surge; packer leak?
Reset packer 2 feet deeper: Test interval 110.5 to 114.5 (4.0')
0.02 gpm {
0.01 gpm
0.01 gpur
0.01 gpmgfllm €ligh-tiurging) /
0.09 gpm Slight Surging
{-
i66 1Y'r-tiY
A*,1 e "'* /o rl
BOHING LOG
Boring No.
Llr-1 Ht,-?t
Client:
DESCRIPTION REMARKSDescription
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CONSTANT HEAD PRESSURE TESTS
Well Number: WMlvtW-21
White Mesa Project
San ]uan CountY, Utah
Pressure Test No. 1
Date:8/13/94
Elevation: 5558' GL Estimated
Total Depth: 1.'l'7.0' ./ , * I
Gound. Levet to Gauge:*" \ ' o
Hole Diameter Q+f8tt (0'.32')
Depth: < - ln' M""rrrred: lCft&*d,ileg' ---€ J nn ri
Test Interval: #5'
Packer Pressure: 300 Psig
TIME PRESSURE FLOW RATE
L2:15 pm 130 Psig 0.30 gPm
12:20 pm 130 Psig 0.50 gPm
12:25 pm 130 Psig 0.60 gPm
12:30 pm fleFi OrOgem
Remarks: None
*r"*f
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Boring No.
l^t4UU-Z-z-BORING LOG
Pro,lect:ist :
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CONSTANT HEAD PRESSIJRE TESTS
Well Number: WMMW-22
White Mesa Project
San ]uan County, Utah
Pressure Test No. 1
Date:8/13/94
Elevation: 5516' GL Estimated
Total Depth: 140.0'
Gound Level to Gauge:&C["
Hole Diameter: 3.^&/{tr[ (0.32')
Depth:
Measured: 130.0 - 140.0' -=b T"^b
Test Interval: 10.0'
Packer Pressure: 300 Psig
, r r.r@4-!20
ffi$;,ttrt
TIME
02:00 pm
02:05 pm
02:10 pm
02:15 pm
02:20 pm
PRESSURE
100 psig
125 psig
125 psig
125 psig
125 psie
ffi
FLOW RATE
0.00 gpm
0.00 gpm
0.00 gpm
0.00 gpm
&00 gp:ru.
Remarks: Pressure increase to 130 psig; Packer started to move slightly, slight
surging.
BORING LOGEn vi ro nme ntal Se rvice s
Boring No.
GH -7?-/
Prolect: l^,/F'l'-le s<Geoloqist: - t/€{L Sheet No. / ot -r'
Ctient: En...r. F-o ls Date: 8/tr /tr.r Proiect No.
Well Construction
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Boring No.
eU-7./-/
Prolect:Geoloqist :Sheet No. 2- of 3
Client:Date: E/rz/tq Proiect No.
Well Construction Xo)g€
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DESCRIPTION REMARKS
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BOHING LOG
Boring No.
6H'tv-r
Project:Sheet No. 3
Client:Dale:
DESCRIPTION REMABKS
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CONSTANT HEAD PRESSURE TESTS
Well Number: GH-9&1
White Mesa Project
San ]uan County, Utah
Pressure Test No. 1
Date 8/17 /94
Elevation : 5592' GL Estimated
Total Depth: 40'
Gound Level to Gauge: Sff
Hole Diameter: 3ff (0. 125')
Depth:
Measured: 34.0'- 40.0'
Vertical: 35.2' - 30.8'
Test Interval:
Measured: 5.0' , ! Lr( g,o
Vertical: 4.6.0' a- e j-'ct' (
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
02:10 pm 90 psig 0.30 gpm
02:15 pm 90 psig 0.20 gpm
02:20 pm 90 psig 0.20 gpm
02:25 pm 90 psig 0.20 gpm
02:30 pm 8Oftit ef*gpm
l( = 5,48 -G '^/s*'-
Remarks: None
Pressure Test No. 2
Dats 8/77/94
Elevation : 5592' GL Estimated
Total Depth:50'
Gound Level to Gauge: e6r
Hole Diameter:€?#' (0. 125')
Depth:
Measured. {h€lt*tt€06h
Vertical:30.8' - 38.5'
Test Interval:
Measured: 10.0'
Yertical: V.7'
Packer Pressure: 300psig
TIME
03:10 pm
03:15 pm
03:20 pm
03:25 pm
03:30 pm
PRESSURE
30 psig
30 psig
30 psig
30 psigzlgr'b
FLOW RATE
1.40 gpm
1.00 gpm
1.00 gpm
1..00 gpm
,2rre0 g'prn
K= 1,/s E-5:l-
ltr-
Remarks: None
Pressure Test'No. 3
Date:8/11/94
Elevation : 5592' GL Estimated
Total Depth: 80' v
Gound Level to Gauge: €6t
Hole Diameter :&*40. 125',)
Depth:
Measured: .7$.sr"* "W.0' (
Vertical: 53.9' - 61.6'
Test Interval:
Measured:10.0'
Vertical: 7.7'
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
08:00 am 30 psig 1.70 gPm
08:05 am 30 psig 1.80 gPm
08:13 am 30 psig 1.70 gPm
08:17 am z0@ ,-rcgPm
Remarks: None
Well Number: GH-94-1
ft = 5.s<E -5 c*-
Tz-
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Pressure Test No. 4
Date:8/11/94
Elevation: 5592' GL Estimated
Total Depth: 100' r'-
Gound Level to Gauge: Cc0r"
Hole Diameter : *'"(0. 725')
Depth:
Measured: eftO+'- 100'8i r'
Vertical: 70.8' - n.0'
Test Interval:
Measured: 8.0'
Vertical: 6.2'
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
09:20 am 30 psig 13.50 gPm
09:45 am 30 psig 13.00 gPm
09:50 am 30 psig 13.00 gPm
09:55 am l8ryrtg,,z ,2t8ffi gpm
Remarks: None K' ,1,'l lE'1 y
22e
Well Number: GH-94-1
Pressure Test No. 5
Date:8/72/94
Elevation: 5592'GL
Total Depth: 110'
Estimated
Gound Level to Gauge:
Hole Diameteri*0" (0.
Depth:
Measured: 14S.&*,11()O'
Vertical: W.3' - U.7'
Test Interval:
Measured:7.0'r'
Vertical: 5.4'
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
10:40 am 30 psig 15.5 gPm
'1.0:47 am 30 psig 15.5 gPm
1.0:55 am 30 psig 15.6 gPm
11.:00 am uz$patg N4&egpm'
Remarks: None
)< = 5,'lq= -4 cg
fu<-
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125',)
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Pressure Test'No. 6
Date:8/72/94
Elevation: 5592' GL Estimated
Total Depth: 140'
Gound Level to Gauge: efl
Hole Diameter: *.${ (0. 125')
Depth:
Measured; lf$flL*S(!l'
Vertical: X00.1' - 107,8'
Test Interval:
Measured:1.0.0'
Vertical: 7.7
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
01:45 pm 30 psig 4.50 gPm
01:50 pm 30 psig 5.00 gPm
01.:55 pm 30 psig 5.00 gpm
02:00 pm 30 psig 5.10 gPm
02:05 pm 3@ig* 50&gpm
Remarks: None
k=l.rur-4 c*,
F
)k_
Well Number: GH-94-1
Pressure Test No. 7
Date:8/12/94
Elevation : 5592' GL Estimated
Total Depth: L50'
Gound Level to Gauge: 0.0'
HoIe Diameter: 3.0" (0. 125')
Depth:
Measured: 1.46.0' - 150.0'
Vertical: 772.4' - 115.5'
Test Interval:
Measured:4.0'
Vertical: 3.1.'
Packer Pressure: 300 psig
Remarks: '|ffi&rted; unable to get good packer seat.
--.#
Pressure Test No. 8
Date:8/12/94
Elevation : 5592' GL Estimated'
Total Depth: 165.0'
Gound Level to Gauge: 0.0'
Hole Diameter: 3.0" (0. 125')
Depth:
Measured: 762.0' - 155.0'
Vertical:'1.24.7' -'l'27.0'
Test Interval:
Measured:10.0'
Yeftical:7.7'
Packer Pressure: 300 psig
Remarks:ffi&,**kted; unable to get good packer seat.
Pressure Test No. 9
Date:8/12/94
Elevation : 5592' GL Estimated
Total Depth: 155.0'
Gound Level to Gauge: 0.0'
Hole Diameter: 3.0" (0. 125')
Depth:
Measured: 163.0' - 1.65.0'
Vertical: 125.5' - 127.0'
Test Interval:
Measured: 2.0'
Vertical: 1.54'
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
12:45 pm 30 psig 0.00 gPm
12:50 pm 30 psig 0.00 gPm
Well Number: GH-94-1
01:00 pm 30 psig 0.00 gpm
Remarks: Lrcreased pressure to 60 psig; ffiffi:g?
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BORING LOGE n v iro n me nta I Se rvice s
Boring No.
6!-?'l-?
Project: \,J L t'4 t sc,Geoloqist Sheet No. / ol I
client: r' F x)Date: I /ty /q,Proiect No.
Well Construction
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e u - qq-2f,
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Client: E f at Dare: 8/ rSTtrt Proiect No.
Well Construction E3o5
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CONSTANT HEAD PRESSURE TESTS
Well Number: GH-94'24
White Mesa Project
San ]uan CountY, Utah
Pressure Test No. 1
Date:8/15/94
Elevation: 5582' GL Estimated
Total Depth: 40'
Gound Level to Gauge: A.O'/
Hole Diameter:-,p.0" (0. 125')
Depth:
Measured: &4.0' - 40.0'
Vertical: 26.2' '30.8'
Test Interval:
Measured: 5.0'
Vertical: 4.6'
Packer Pressure: 300 Psig
TIME PRESSURE FLOW RATE
11:45 am , 30 psig 0.35 gPm
1.1:50 am 30 psig 0.35 gPm
L1:55 am 30 psig 0.36 gPm
12:00 pm 30 psig 0.35 gPm
12:05 pm /@pctg r'$.% gPm
Remarks: None
l<=2,71E -5ts
2k'
Pressure Test No. 2
Date:8/75/94
Elevation: 5582' GL Estimated
Total Depth:40'
Gound Level to Gauge: O#
Hole Diameter: &0" (0. 125')
Depth:
Measured: &;5' - 40.01
Vertical: 25.0'- 30.8'
Test Interval:
Measured: 7.5'
Vertical: 5.8'
Packer Pressure: 300 psig
TIME PRESSURE FLOW RATE
12:10 pm 30 psig 12.00 gPm
12:15 pm 30 psig 12.00 gPm
12:20pm 30 psig 12.00 gPm
L2:25 pm ,,,?f.psig ,/&2.04 gPm
la= 6,'trlF'7 '^
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Well Number: GH-94*24
Remarks: Water returning to surface; test inaccurate and inconclusive. , , \ - 1e
't--= f"t a-i *"bk v"aK"'lJ'-'l,l^,.\-> loQ t+t-L (lY74 r s-\ ' V ,l
ll=y:Tes,t No' 3 n'v's d * il''- N'l 1'n;2 al".n",
3,:T;iiH'ut ,GL Esrimated 'r^*i*l- -*t*,t"t'l r- r'k
Total Depth:56'
Gound LLvel to Gauge: &$br'
Hole Diameterr3$i (0. 125')
Depth:
Measuredr6&0'''.ffi& /
Vertical: 38.5' - 43.1.'
Test Interval:
Measured: 5.0'
Vertical: 4.5'
Packer Pressure: 300 Psig
TIME PRESSURE FLOW RATE
o1:50 pm 3opsig 1.50gpm /< : I ,qq E - 5 c::
ffi;Bglfr 33F:tE i:i3#il /\ - 7e
02:15 pm 7ffigb A"!e,gPw-
Remarks: None
Pressure Test No. 4
Date 8/15/94
Elevation: 5582' GL Estimated
Totd Depth: 70'
Gound Llvel to Gauge:Q'#/
Hole Diameter:<3€i: (0. 125')
Depth:
Measured:&r*7Os./
Vertical: 46.2' - 53.9'
Test Interval:
'Measured: 10.0'
Yerticall.7.7'
Packer Pressure: 300 psig
TIME PRESSURE
10:40 am 35 psig
10:45 am 35 psig
10:50 am 35 psig
L0:55 am 35 psig
11:00 am €E4ig"/
Remarks: None
FLOW I{ATE
1.80 gpm
1.10 gpm
1.10 gpm
1.10 gpm
&tOgPrn"t-
k= 2,51 E-5 "2L?A
Weil Number: GH-94-24
Pressure Test No. 5
Date:8/15/94
Elevation: 5582' GL Estimated
Total Depth: 80'
Gound Level to pauge: e,0t'
Hoie Diameter:'&fl, (0. 125')
Depth:
Measured: ffifr' '"8O.8'y'
Vertical: 53.9' - 61.6'
Test Interval:
Measured: 1.0.0'
Yertical:7.7'
Packer Pressure: 300 psig
TIME
11:35 am
11.:40 am
L1:45 am
11:55 pm
PRESSURE
30 psig
30 psig
30 psig
SOpsigatz
FLOW RATE
5.50 gpm
4.40 gpm
4.45 gpm
*ffigpre
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Pressure Test No. 6
Dats 8/75/94
Elevation: 5582' GL Estimated
Total Depth:59'
Gound Level to Gauge: &S
Hole Diameter:&*)" (0. 125')
Depth:
Measured.: 80+€*-'e0.oi !/
Vertical: 6'1..6' - 69.3'
Test Interval:
Measured: 10.0'
Yertical:7.7'
Packer Pressure: 300 psi
TIME
12:35 pm
72:40 pm
12:45 pm
12:00 pm
12:55 pm
PRESSURE
30 psig
30 psig
30 psig
30 psig
^'z ffJ-_Psigr
None
FLOW RATE
5.80 gpm
3.50 gpm
3.40 gpm
3.40 gpm/a/m,gpat
/ ' l,u'l tr-4 A,
Remarks: None
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Well Number: GH-94-24
Pressure Test No. 7
Date: S/15/94
Elevation: 5582' GL Estimated
Total Depth: 1.44' r'.-
Gound Level to Gauge: B
Hole Diameter: |8 (0. 125')
Depth: t/
Measured:{W{g*e*
Vertical: 106.3' - 110.9'
Test Interval:
Measured: 5.0'
Vertical: 4.6'
Packer Pressure: 300 psi
TIME PRESSURE FLOW RATE
02:25 pm 90 psig 0.00 gPm
02:30 pm 90 psig 0.00 gPm
02:53 pm 2O psig ,-fi00 gPm
Remarks: Attempted to increase Pressure to 120 psi; lost packer seat.
/t/ofuk'----
Environ me nta I Se rvice s BOBING LOG
Boring No.
Gu-'/' -a
Project: ,r...c I . 3c, Geoloqist : l'c- e tu Sheet No. I ol 3
Client: -' F l)Date: 'l/ talqq Proiect No.
Well Construction
L,']
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DESCRIPTION REMARKSDescription
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CONSTANT HEAD PRESSURE TESTS
Wetl Number: GH-g+3
White Mesa Project
San |uan CountY, Utah
Pressure Test No. 1
Date:8/LS/94
Eleva tion : 568& Gl*Fstirnated
Total Depth: 165.0''Gound Level to Gauge:3eh
Hole Diameter:.36'r, (0. 125,)
Depth: r'.-
Meas ured:il55t€e*.tr51-&
Vertical: 119.3' - 724.0'
Test Interval:
Measured: 6.0'
Vertical:4.6'
Packer Pressure: 300 Psig
TIME PRESSURE FLOW RATE
11:30 am 50 Psig 0.10 gPm
1L:35 am 60 Psig 0.10 gPm
11:40 am 50 Psig 0.10 gPm
Ll.:45 am a rnft r'ztSl'O'8Pm
Remarks: Some surging; test results may be inaccurate and
ft=2,358- L
inconclusive.
Pressure Test No. 2
Date:8/78/94
Elevation: 5580' GL Estimated
Total Depth: 155.0'
Gound Level to Gauge: 0.0'
Hole Diameter: 3.0" (0. 125')
Depth:
Measured.: {E&Ol*' 1,44-0' {
Vertical: 1.06.3' - l'1.0.9'
Test Interval:
Measured: 6.0'
Vertical:4.5'
Packer Pressure: 300 Psig
TIME PRESSURE FLOW RATE
12:03 pm 30Psig 0.00 gPm
12:05 pm 90 Psig 0.10 gPm
12:10 pm /€&FdS -@"1.4 gPm.
Increase pressure to 60 psig { f^'--l- 7' /,
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Well Number: GH-94-3
12:15 pm 90 Psig
1.2:20 pm 90 Psig
Remarks: Some surging; test results may be inaccurate and inconciusive.
0.10 gpm
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E n vlro nme nla I Service s BORING LOG
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DESCRIPTION REMARKS
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DESCRIPTION REMARKS
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Septernber Lh t 1994
Fred Peel
r03 78 tJ. 77 Eh ClrcleArvada, C0 80005
HE:' Rock core sample testr.ng, rJrrlte Mesa Htrl site
Fred:
Enclosed are the sbove test resulE,s completed to dste. Theperneabillty tests trere run ln general accordance vLth AsTt{ D-50g4-90 (lleasureEent of Hydraullc Conductl.vity of Saturatea porousHaterials Uaing a Flexlble Usll permeanetei) . a-"-"-f-,riion of . OO5!.c3Fo,.sas used for the permeanr ll_quld. Becauee of apparatuE1lmlt'atlona' conflnlng presEures used vere lirnlted to about gooolbs,/sq ft- you r+i1I note thaE slrecirnen HW 22 e lJ2.3_137.gexlrlbited an exce-p-tiorralL-r. llgt p.rir"ruillty coefflcLenr. Thlsspeclmen had a rerl estabtistred, mineraf rfiieJJ-"-.f'il;unning thelength of the sanple teeted vhlch, .rt -Ls presurned, controlled therace of frov through thg specimer cturing'rht i;s;. -;.; thrs is a.reas6nabre assunption, basid on Eeasuref,ents of the vrdth of theJollt, the Joint transulsslvity is est{urated to be s.s1 x 1o-rcmt/sec
Please call ne if you have any questjons.
Subnltted by:
Bruce D.
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ATTACHMENT 3
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INSTAILATION
TABLE
DATA I.IELLS TI{ROUGE 10-1(1)
9
6-L
DEPTH ..A..
lOP OF SCREEN
DEPTII "B,.
APPROXIMATE
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PIEZOMETER INSTALLATION SHEET
PROJECT NAME
PROJECT NO.
BORING NO.
PIEZOMETER NO.
BOREHOLE DRILLING f, -E7
,/ /(,/ c FIELD ENG./GEO.RSP sa;1 ,r/ t/c
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TYPE / F)9 +GR /i/U E
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sLors E] HoLES fl
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TorAL PERF9RATED AREA 226 ,o, ,i t,
RISER PROTECTIVE PIPE
PROTECTIVE PIPE O.D.6 11yg H-rJ
ITEM DISTANCE ABOVE/BELOW
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TOP OF RISER PIPE o.5
GROUND SURFACE o.o
BOTTOM OF PROTECTIVE PIPE e,0
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GROUT/SLURRY
BENTONITE
SAND
GRAVEL
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PIEZOMETER TIP t4n
BOTTOM OF BOREHOLE t4O,ei J,:, >
GWL AFTER INSTALLATION /9/,8
ELEVATION()
BOTTOM
BOTTOM
BOTTOM
EOTTOM
BOTTOM
WAS THE PIEZOMETER FLUSHED AFTER INSTALLATION?
WAS A SENSITIVITY TEST PERFORMED ON THE PIEZOMETER2
YES E
YES T
E
M
NO
NO
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CONSULTING ENGINEEBS' INC.
Noveuber 1, 1982
Projec! No. BU82-2039
Dr. C. E. Baker
Energy Fuele Nuclear, Iac
Threi- Park Ceotral, Suite 900
1515 Arapahoe Street
Deuver, Colorado 80202
llell 11, 12 eod !3 Installatioo Report
Dear Dr. Baker:
Grouud water aouitoriug llelle 11, 12 aad-13 were installed donogradieut of
railinge CelI i-Jrrriog October-ZVZS' 1982. These re1ls cougtitute the Cell 3
operatioaal phase ggouua vater touitoriDg Prograu requireEetrts as giveu io Ehe
-Secoud phase o""ig"-- Cell 3 neport (ot1fpofonia, uay 198f) and uodified in
Ebe Leak Derectiou systeo Evaltratiou Report (otAipolluia, December 198r)' The
wells were plauued rith the saoe iustaliatios details as existiug lyell 5'
orders for neli r"terials and arraugenents for the drilliag cootractor uere
made by Eoergy Fuels aod iustallatiou of the wells rras directed aad uouitored
by D,Appolooia. I{ells 1l aud 12 are located oa ce1l 3 Dike about 700 feet
east and 1000 feet uest of Weli 5, respectively. If,el1 13 ie located near the
ceEter of the previouely propoaed cell 4 Dike. surrreyed coordinates aud
"i"""1f";"-:i ih.". relie- are uot available 8t thig tiae' '
Drilling and loggiug of all three boreholee aod the iastallatioo aud
developaenr of ilffr ff aad 13 occurred betweeu October 20 aad 22' 1982' lhe
iasrallatiou a.iiira ard brief subsr.rrface descriptioas for l{ells l1 aDd 13'are
givea on Figures I aod 3, respectivelyt conpletioa of I{eIl 12 was delayed
uutil october 25, 1gg2 due to a lack of supplie". cmpletioa details t'ere
specified by D;i;;iooi. prior to leavi"g lle site ou october 22' 1982'
Ccmple3i6a was plliqi.a iy ai1l persoauil aud the decails are given oo
Figure 2.
l{itb regard to uater quality saupliug and well loogevity, the follot,.ing
recolluDeudatioos are oade:
T
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I 7400 souTH ALTON COURT, ENGLEIIVOOD, CO 80112 TELEPHONE:[phone]i1 TELO(:45-.565
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Kathleeu H. Haddock
Bydrogeologist
e*;s eNN-
E.R. Roberts, EnergY Fuels, Denver
n.X. Sparling, Energya'u-elsr-Blaadiug
i.x. r,i""".rr, Eoetgy Fuels, Blaading
((
0ctober 29, 1982Dr. C. E. Baker
If you have
U8.
Very trulY Yours,
Additional cleauing of the we1ls, prior to -sampling'is recouoerded; tnls should be done by air lifting to
avoid uudue *"it oo a PuBP fro'o suspeoded solids iu
the water.
A protective steel casiag, siuilar to that arouud the
oair"t weIls should be iastalled ou each nen relI'
il; tteel casings Protect agaiost losing the well''
The well casing should be capped to keep-foreiga
raterials from falli4 iu and cont'auinatiag the sater
. or pluggiug Ehe we1l.
any questioas or require additiooal ioforaatioo, please cotrtact
Corrrio
Proj ect
CEO:KM[: Par
E. Oldweiler
Engiueer
GROUND
SURFACE
7o.o'
85.O'-
VENTED CAP
4,, O PVC SCHEDULE
40 PIPE
CEMENT GROUT
77/g" O HOLE
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CEMENT BASKET AND SAND
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FIGURE I
PIEZOMETER INSTALLATION
WELL NO. II
CONSTRUCTION DETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR ' lNc.
DENVER, COLoRADo
rgs.ol
lrTol ]rEIDAtr d-INBT.IT A
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PI EZOMETER INSTALLATION
WELL NO. I2
CONSTRUCTION DETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR,'lNc-
DENVER, COLORADO
(
GROUND
SURFACE
65.6'
71.2'
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FIGURE 3
PI EZOMETER INSTALLATION
WELL NO. 13
CONSTRUCTION DETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR, lNc'
DENVER, COLoRAD0
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GROUND
SURFACE
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gg'
COARSA tyET SANOSTOTwE
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FIGURE 2
PIEZOMETER INSTALLATION
WELL NO. I
CONSTRUCTION DETAILS
PREPARED FOR
eruEncv FUELS NUcLEAR, tNc.
DENVER, COLORAOO
fh,CD^ !v]tf]\-Jt rr 7:,s, v- -
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7?'
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CUTTINGS
t 7/i'HOLE
CEMENT GROUT
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SANO
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EOTTOM CAP FIGURE 3
PIEZOMETER INSTALLATION
WELL NO.2
CONSTRUCTION DETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVER, COLORADO
NOT TO SCALE
SCREEN CONSISTS OF COMMERCTALLYsLorrED prpE wrrH o.o4s rn. uiioesLors, 3 Rows ANo 4o-4z.rstoisz
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: SCREEN CONSISTS oF
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NOT TO SCALE
COMMERCIALLY
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FIGURE 4
PIEZOMETER INSTALLATION
IVELL NO. 3
CONSTRUCTION DETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
OENVER, COLORAOO
GROUND
SURFACE
r--2'
LOCKING CAP
VENTED CAP
PROTECTIVE PIPE
CEMENT SURFACE SEALIG
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-il21
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NOTE I : SCREEN CONSISTS OF
SLOTTED PIPE WITH
SLOTS, 3 ROT,YS ANO
A^rar, F? ArAF
NOT TO SCALE
COMMERCIALLY
o.o45 tN. wt0E
40- 42/SIOTS/
FIGURE 5
PIEZOMETER INSTALLATION
WELL NO. 4
CONSTRUCTION OETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVER, COLORAOO
T\oS, p4:rr\,' ^r)F\T .\
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93.5'-
95.5'
O PVC SCHEDULE
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PIEZO METER INSTALLATION
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CONSTRUCTTON DETAII.S
PREPARED FOR
ENERGY FUELS NUCLEAR, tNC.
DENVER, CoLoRAOO
BOTTOM CAP
NOT TO SCALE
59.5'
[}:$,'PTTDT{DI\IL$.
Attachment F
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Attachment F
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ru,hWWMW-@WWh
CONSULTING ENGINEERS, INC.
September 9 , 1981
Project No. RU78-682-B
tetter RePort
Assessmen
Blanding, Utah
Dear Dr. Baker:
II{TRODUCTION
In response t,o your request of June 4, 1981, DtAppolonia has reviewed the
rrater quality deta fron monitor we1ls installed around the tailings
retention aree. Ttre purpose of thia review and evaluation is to deter
uine if the data indicate any degradation of the groundwater quality
which could bd attributed to a leak from the tailings facility or any
other ni1l-related operation. Pre-operational baseline data and oPera-
tionaL data have been included in the review Process' Ttre data have been
evaluated with regard to Erends in select Parsneters and general overall
water quality variation with rine.
This report is divided into two main sections as follows:
groundwater.
oPerat ional
GroundwaEer QualitY: Potential
Sources - This section contains Ehe
evaluaEion of the existing locaI
Data from the Pre-oPerational and
wells \rere utilized.
oEvaluationoftteLLT-2WaterSource-Thissection
evaluates the possible sources for the water
detected in Well 7-2. Data from the pre-oPera-
tional and operational phase wells and surface
Irater supplies rrere utilized'
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Dr. C.E . Baker
Energy Fuels Nuclear, Inc.
Suite 900
Three Park Central
1515 Arapahoe
Denver, CO 80202
o Evaluation of
Degradation of
water quality
PECflYFD
stP 14 1981
Yl
TELEX: 45-4565
I A,:I INA NI.?I ItrI
0t
frl.
74OO SOUTH ALTON COURT, ENGLEWOOD, CO 80112 TELEPHONE: [phone]
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Dr. C.E . Baker 2 September 9, 1981
EVAT.UATTON OF GROT NDWATER QUArrlY :
POTENTIAI DEGRADATION AT.ID SOURCES
Data Reviewed
Available daEa reviewed and evaluated consisted of pre-operatiotral lreEer
quality analyses fron Wells 1, 2, 3, and 4 for October, L979, and January
ana nprif, ligO, and nonthly operational phase aaalyses from May 1980,
through February, 1981. The pre-operational sampling aad laboraEory
analyses were performed by DtAppolonia excePt for the radionuclide
parameters which were performed by CDM Acculabs, Denver, Colorado (Octo-
L.r, LgTg), and Eazen Research, Golden, Colorado (January, April, 1980).
Monthly operational water quality data from May 1980 through February
1981 was provided by Energy Fue1s. Wells sampled during this period were
deep groundlteter monitoring I{ells Lr 2r 3r 4r 5, and inter:mediate depth
leak detection Well 7-2. Samples for this period were Eaken by Energy
Fuels personnel and the analyses performed by I{AMCO Labs, Casper, Wyoming.
During Septenber, 1980, select sanples were also aaalyzed by D'Appolouia
for comparison purposes.
Indicator Parameters Selected for Evaluation
The water quality data was reviewed by selecting several paraneters and
plotting the values. for each well against time. The paraneters selected
lor evaluation with explanations of the rational for their selection
follow:
Sulfate, SOe : Sulfate is highly concentrated
ia the tailings water (35,000 ng/I) and tends to
move relatively rapidly and freely Ehrough the
subsurface at approximaEely the sane raLe as Ehe
groundwater. As the sulfate fron tailings water
ieacts with calcareous soil, gyPsum ( caso4' 2H2o)
will precipitate, removiag sone of the sulfate
frou the tailings !tat,er. llowever, the iacreaee in
sulfate eoncentration si11 still be substantially
above background levels, thus iadicatiug the
probability of a leak.
Chloride, CI-: Chloride is concentrated in
the tailings nater (Z,ZOO ng/L) and moves through
the subsurface at apProxiuately the saue raEe as
the groundwater. Chloride is usually considered a
conservative species; that is, it does not react
with the soil or groundwater. Thus, elevated
chloride levels usually indicate a leak of tail-
ings water. Eowever, the increase over backgrouod
leveIs is not as dramatic as observed with sulfate.
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Dr. C.E. Baker September 9, 1981
Total Dissolved Solids, TDS: Ihis ParameEer is an
indicator of gross water quality and elevaEed
values indicate an increase in dissolved ions in
the nater. Typically, 50 percent, of the dissolved
species in the tailings water are due Eo sulfate;
therefore, an increase observed in IDS should
indicate a corresponding iucrease in sulfate.
Sodium, Na+: Substantial concentraEions of
sodium exist iu the tailings ltater (6,400 ng/I).
As sodium is not very reactive in Ehe subsoil
environrnent, iucreased concentrations'of sodir:m in
the groundwater nay indicate a leakiug tailings
ce 11.
o pE: Ttris parameEer is an iudicator of the pos-
sible change in water quality because of acid
tailingi seepage. As tailings wat,er reacEs trith
calcareous soils, the pE is neutralized. During
the neutralization process, nany of the radiouu-
clides (thorium, lead uranium, etc.) and the'heavy metals are co-precipitated with iron oxyhy-
droxides. Ttrerefore, decreases in pH iudicate
severe leakage and increased concentrations. of
radionuclides and heavy metals. Ttre acid front is
substantially attenuated relaEive Eo the Eovement
of the groundwater; therefore, iucreases in
sulfate and chloride will be obse:ived much earlier
than decreases in pE. - "-.
Radiur226, Ra-226: Ttris Parameter is the most
uobile radionuclide and therefore is an indicator
of quality change. The Eovenent of this element
in the subsurface environment is probably con-
trolled by the solubility of radium sulfate.
Bicarbouate, HCOJ: Due to the low pH of
the tailings water, no bicarbonate/carbonate
ions are present. However, as the acid in the
tailings water reects with the calcareous soil,
carbon dioxide and bicarbonaEe ions are gener-
ated. Therefore, elevated concentraEions of
bicarbonate Bay indicate acid leakage. In-
creases depend upon Ehe amount of calcite that
reacts; therefore, increases rnay be difficulr
Eo observe.
Calcium, ca2+: Like bicarbonate, calcium
ions result from reaction of the acid in the
tailings water with the calcite in the soil. Some
calcium is present already in Ehe tailings water.
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Dr.Baker September 9, 1981
Calciun is also reuoved by the precipitate of
gypsun. Overall, trends associated with calcium
concentratioos are difficult to interpret due to
Ehe variety of mechanisms occurriag.
rn sumnary, elevated concentrations of .gq$a!e, @.oride andJE iu the
groundwaterareprobab1yth"@toeva1uateachangein
lroundwarer quality fron an aEffi[e u-niun mill and tailings facility.
Evaluation of Indicator Parameters
Values for each of the above parameters lrere plotted against Eine for
each well as sholrn ia Figures 1 through 8. In general, the data PloEted
on these figures indicates a change from pre-operational to oPerational
phase values. The trend of this change is almost always au iucrease in
value. This inerease Eey not reflect an actual cha:rge in groundrrater
quality, rather it may be due to the differences in sampling procedures
and laboratory teehniques.
Speci'fic items of importance observed for each of the iadicetor Pareme-
ters are:
Sulfate, so; , Figure 1 - The data for this
paraoeter are relatively constant excePt for Well
3 wtrich shows a gradual, but erratic increasing
trend. Wells 2 add 4 also aPPeer to have slighly
increasing concentrations. Well I consistently
has the lowest values for the deep wells. Eowever,
lle]l 7-2 has .lolrer values than Well 1.
Chloride, C1-, Figure 2 - The data for this
paremeter are relatively variable with no particu-
lar trend, except again for Well 3. Ttre chloride
concentrations measured in I{e11 3 show a gradually
iucreasing trend with tine. Well 4 also aPPears
to have slightly increasing values. Wells I and
2 have sinilar concentrations wtrich are Ehe lowest
observed. Well 7'2 }i.as subsEantially higher
values than the other we1ls.
Total dissolved solids, TDS, Figure 3 - fhis
parameter indicates Erends similar to that
shorm for sulfate. Concentrations in WeIl 3 are
gradually increasing with time; concentrations in
WelI I are low, with WelI- 7-2 having sinilar, but
slightly lower values.
b(,: l.zTi'-- 55,t+
E./u?^ = 35'55rtb75
f,At,- b 4'\
a\
o Sodium, N.*, Figure Z - flte
parameter are constant with
ing trend noted in Wells 2
Ehe lowest values and Well
values for this
a very slight increas-
and 3. i{ell 7-2 has
I the next lolcest.
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Dr.Baker September 9, 1981
pH, Figure 5 - This paraneter is quite variable
for all wells but typically fall within a range of
pH = 6.5 to 7.75. A slightly decreasing trend was
observed from SepEember 1980 through February
i98t, with l{ell 3 having the lowest value by a
slight amount.
o Radiur226, Ra-226, Figure 5 - This parameter is
variable, but no trends are observed. One very
high value for tflel-L 7-2 iu July 1980 was reported.
Eowever, the concentrations returned to a more
typical level the next Eonth; therefore, the JuIy *-fDS 4V
t98O vatue is cousidered erroneous * + b,l !ou,'r,
Cnn5,4 l^- ^,, I '2 'Bicarbonate, ECOJ, Figure 7 - This Parar,eter.--- " r-l)')/"
indicates no particular trend with I{ell 7-2- having
the lowest values; WeIl 1, the next lowest, and
Ehe other we1ls grouped together with higher but
similar values. A high value Iras rePorted for
We1ls 21 3 and 5 in September 1980, but the values
weat back down in the subsequent monthst analysis.
Calciurn, Ca2+, Figure 8 - This Paraneter shows
an iucreasiag trend for Wells 2 and 3. A rela-
tively wide variation in values is observed, w'ith
I{ells 3 and 4 having Ehe highest concentrations.
The data plotted on the figures for several wells indicate increasing
trends for certain parameters. To dete:mine whether th€ increase was
sEatisticaLly significant, Studentrs 'tt test rras used. The hypoEhesis
that the mean of the pre-operational concentrations is equal Eo Ehe mean
of the operational concentrations was tested at Ehe 99 percent Ieve1.
This level of significance means Ehat the confidence needed to state
there was indication of degradation musE be high. Such a level is
justified because it should help screen out extraneous variability due to
sanpling methods or fluctuations in oEher variables. Itre Eethodology
,r".d i" in accordance nith the monitoring and evaluation techaiques
required by the Resource Couservation and Recovery ^lct (nCna)(+O C.F.R.
265 .9) .
The sulfate, chloride and TDS concentraEions in I{elI Lr 2r 3 and 4 were
evaluated. In a1l cases, the Eeans of pre-operational and operational
concentrations were not statistically different at the 99 percent confi-
dence level. Ilorreveilat the 95 percent confidence level, the means of
TDS and chloride in Well 3 were sEatistically different. In fact,
chloride concentrations in WelI 3 were almost different at the 99 percent
level. Ttre main reason the means are not different is due Eo the large
variance (standard deviation) in the means. For example, in Well 4, the
sulfate concentrations ltere as follows:
-+- L
Qv-q |2.r ir*
+ 441I toz
Dr.
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Baker
o Pre-operational
o operational
6
L,673
L,921
trlg/L
tr,e/L
September 9, 1981
These values yielded a tt'of 1.0 wtrile the criteria ttt at 99 percent is
9.9. Therefore, the hypothesis that the means are equal is rejected. In
other words, the large variability in the analyses makes it difficult to
conclude that the mean6 of the two populations are different. If the
variability (as measured by the standard deviation) was smaller, differ-
ences in tire Eeans between the pre-operational and operational data would
be easier to detect
If the increasing trend is due to Eailings rrater leakage, it should not
be observed in the upgradient Well I. Ilowever, the mean of the oPera-
tiosal sulfate concentrations in l{ell L increases 47 Percent over the
meao of the pre-operational concentrations. Ttre mean of the aulfate
cotrcientration iu tlcll 3 increased 70 percent. Therefore, most of the
appaient iacrease observed in Well 3 can be attribuEed to natursl
increages ia background'. The increase in Well 3 aPPears to be more
drr-aEic because the pre-operatiooal concentrations are significaatly
higher than those in Well 1. Eowever, as shorm, the Percentage increase
is sinilar in the two wells. In fact, the concentration of.such species
as calcigm and sulfate increased substantially during Pre-oPeratiooal
sanpling. Tf. this increase rras projected into Ehe oPerational period,
the actual values measured during operational sampling would actually be
less than or similar to the trend predicted from the Pre-oPeratioual
data. Furthe:nore, in most insEances, the constant increase is no longer
observed and concentratioos have fairly well stabilized over the past 5
to 8 months. Ttris observation is siguificanE and indicates Ehat the
yeters in Ehe wells are non in equilibriun with their surrounding rock.
Conc lus ions
Conc lus ions from the available data and analyses discussed above are:
No Erends are present which would indicate
a failure of Ehe liner systen in CeIl 2. Ttre
lrater quality values shown on Figures 1 through 8
do not indicate any conteination occurring from
the operation of the tailings ceIl-
The changes and trends rshich have been noted and
discussed above are not considered significant
enough to indicate a leak from the tailings cell-
Statistical analyses also indicates Ehat there are
no differences in Ehe Eeans between Ehe operation-
aI and pre-operational daEa. However, the mean of
the chloride concentrations in Well 3 during
operations may be slightly higher than Ehe pre-
operational mean (at the 95 percent confidence
n':'u:'
J.?
!*){) fifu-to9'
V6{tr,,.t lIt
"
fu:,3-a I . rr( r--r' (
,:.
C",lz
Ir.r ,. i1.t f))
Dr.
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Baker September 9, 1981
level). If increased levels of chloride occur in
Well 3, increases in chloride concentrations
should also be noted at l{ell 7-2 and 5. Wells 7-2
and 5 both have higher chloride concentrations
than the other wells indicaring the possiblity of
degradation from sone source. However, if the
source was CeI1 2, increased sulfate concentra-
tions should be observed in Wells 7-2, 5 and 3.
As previously stated, the sulfate increase in Well
3 is not statistically significant and l{ells 5 and
7-2 have low sulfaEe concentrations- This iudicates
that Cell 2 is probably not leaking to any detect-
able degree and that the increased levels of
chloride observed are probably fron another
source. Possiblities for this source are dis-
cussed later.
o HeIl 3 is reflecting soue change in groundwater
quality ritrich ie not being reflected by the
upgradient baseline Well 1. Ttre groundlrater
quality change in Well 3 could be the result
of several causes other than an actual change iu
the water quality. One of these causes is reflected
iu the fact that when I{eIl 3 was drilled and
coupleted in September, 1979 it was dry and required
several daye before a lrater level wae detected.
This is indicative of a low peraeability material
with low productivity. Lower permeable aquifers
typically contain elevated conceBtrations of
dissolved species due to the longer contact Eime
and more surface area of aquifer uaterials. I{ater
quality paraneters could also be increasing in this
well if lrater is being concentrated and fornation
wacer is not being introduced- Well 3 could also
be reflecting the effect of the different water
source detected in WeIl 7-2; however, Ehe increas-
ing sulfate values in Well 3 are inconsistent with
the low sulfate values in Well 7-2. Also, Well 5
(down gradient from I{eII 7-2) does not ref}ect
change in water quality with time. Thereforer'
is concluded that the water quality Parameters
being detected in Well 3 may be unrepresentative
of the actual groundwater quality and that remedial
work on Well 3 should be Performed.
o Defective sanples or analyses were probably obtained
for the SePtember 1980 Period.
The possibility of a different contaminant source detected in WelI 7-2 is
discussed in detail in the following section.
,O', ,iZ-i/
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:,; \ >- t -t -t p*l'ltu Jn"
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Dr. C.E. Baker 8 September 9, 1981
EVALUATTON oF r,lELL 7-2 wArER souRcE , (L* g{aa ( wr/l
I g'a:t-
Potential Water Sources ,/
*;
r:ull^ko'/ -t t l,
water rras reported by Energy Fuels in WelL 7-2 in June 1980. Well 7-2 is 1ror%,tt{e''-
one of five interuediate aepttr wells completed at a depth of 50 to 60 A.n*ti yt.t '*pil ll
feet (30 to 40 feet above the local water table). Ttre PurPose of the - lD t ' '
iareraediate depth wells is detection of a leak fron thl taitingi ""ir. :::":trT;"I{ater should not be detected in these wells tmless a change ia the = l,= --.-,
groundwater model for the site occurs or a oew source of water is devel- , c -^ 1 -2 =opea. To determine if the water detected in Well 7-2 vas related to the.'
tailings celI or nill operations, an assessment of the possible sources ,r-ql tf l,il*l ,
of this lreter was uade. Ttre results of this assessment are discussed to -r,r=,
- 5,5,11the following sections. _ 51_ ,/f {t 6tt
I Hirr::tories
of porenrial warer sources for the water were evaluated as bq t
Natural Groundwater
- Local groundwaEer systen
- New source of groundlrater recharge, i.e.,
irrigation water or construction lrater ponded
oa-s ite
o MiI1 or Tailings Related Facilities , .A , l+o- Tailings cell 2 , .,t 4 -^r / 1,- (rt.'1
- Mill ,.dir.rrt"tion pond (Bakerts Lake) @ fi*:'* : - *t€. i'
- uiII process circuit - ''),,/ ,*l^,' lu.,to' *:.',i,
,,,
,.'7''' "'/' trriLd^
Natural Groundwater Source Evaluation ,,,./' *i -,' 7", -.\
''|' tib:J' P'7- "
The natural groundsater source was evaluated by conpariy'g t.he measured 4 _7, I
water level in Well 7-2 virin the level predicted ia ttf local groundwat"=----PP''n'u'
model (discussed in Engineerts Report, Tailings Manag'ement Systen, Jurte' 1- !
Ig7il. The prediction indicates Ehat Ehe local nater table is about 40
feet belog the level of water in WeIL 7-2. Forty feet is greater than a
normal fluctuation in the level of the ltater table due to seasonal varia-
tions in precipitation. Iherefore, this physical interpreEaEion indi-
cates that Ehe lrater in Well 7-2 is from auother source. A new poEenEia1
groundwater source is unlikely because of the Iong-te:m.existence of Ehe
irt"r (8 nonths) wtrictr is not consistent with seasonal (irrigation) or
intermittent (construcEion-related) sources. No other new sources were
ident ified.
Wager quality comparisons between Well 7-2 end beseline, I{ell 1, were
also nade as discussed under the previous section. Ttris comparison
indicates that the water in WelL 7-2 is different Ehan the local ground-
rrater. In general, the local groundwater has greater concentrations of
the major ions (Uicarbonate, sulfat.e, magnesium, sodium and toEal dis-
solved solids). However, the concentrations of &lo.ri'de, nitrate.r,Srld
uranius are greaier in l{ell '7-2.
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Dr. C.E . Baker September 9, f98I
A comparison of water fron I{elI 7-2 vras made with I{eIl 5 which is closest
to WelI 7-2 geographically and located downgradient from WeIl 7-2 with
respect to Ehe flow of groundwater. This comparison is shown in Tab1e 1
and is based upon calculating the mean value for a population of values
from several analyses. The value is reporEed as Ehe mean with a standard
deviation of 2 signa. fhis type of statistical evaluation is used to
emphasize differences between populations rather than precisioo of analyses.
Although a large value of standard deviation relative to a mean rnay
r"pr"..ot lack of analytical precision, it also reflects variation in the
concentration of a pareneter with respect to time. Lack of overlap ia the
range defined by the standard deviations indicator nay be interpreted as
values nrtrich belong to different populations. This hypothesis can be
tested using Studeutrs trttr test as previously described. Ilowever, the
general conclusions can be made without Ehe tesE.
In Table 1, it is observed that the concentrations of eodium, sulfate,
bicarbooate, fluoride, alkalinity, aad Lotal dissolved solids, as well as
the specific conductance, are greater in Well 5 than in l{el1 7-2". The
concentrations of chloride, fluoride, nitrate, and uranium are greater in
fleLL 7-2. Concentrations of other Parameters, such as pE, calcigm,
potassir:m, and magnesium are essentially Ehe same in the two welIs.
Additionally, the concentration of radiur226 vas substantially greater
in Well 7-2 Ln Juty; however, in subsequent analyses, the concentration
decreased to background levels.
The differences in conceatrations of major constituents from the statis-
tical analysis between Wells 7-2 aad,7-5, however, are large enough to
suggest that the water in Well 7-2 is from a source oEher than regional
groundwater.
Mill Tailings Related Source Evaluatioa
The potential of a local source from the tailings or within the nill site
was also considered. Ttre poteutial sources evaluated included tailings
CeIl 2, the ni1l sediruentation pond (Bakerfs Lake), and other nill circuit
sources. Determination of the most likeIy source was made by compariug
the water in WelL 7-2 with waters fron CeIl 2 and from the nill sedinenta-
tion pond.
Water was colleeted fron Cell 2, Ehe sedimentaEion pond, and lJel1 7.-2 by
Energy Fuels in September 1980u and samples sen! to DrAppolonia for^
analysis, Splits from the sedimentation pond and Well 7-2 sarnples were
also sent to WAMCO by Energy Fuels for analysis. The resulEs of these
analyses are presented in Table 2. A discussion of Ehe comparison
between Ehe results from the two laboraEories is presented later.
The most obvious aspect in the comparison of the wat.er quality from the
three sources is that conceBtrations of most coEPonenEs in I{ell 7-2 are
considerably 1ower, by one to E\ro orders of magnitude, than corresponding
paraneters in either Cell 2 or the sedimentaEion pond-
r*/")*i s-
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Dr. C.E. Baker September 9, 1981
The water in tailings Cell 2 is a characteristically acidic soluEion
containing very high levels of sulfaEe from the sulfuric acid used in the
Ieaching process. It contains high levels of sodiuu and chloride rftich
are deriv.d fro, sodium chlorate (ttaCtO4) and sodir;m chloride (Uacf) in
the acid leach process. Nitrate is present in tailings CeLL 2 in rela-
tively moderate amounts; however, the source of this nitrate is not
readily apparent. Some acid leach processes use ,tt''onium nitraEe
(NU4NO!) in the solvent extraction circuit. Another source for aitraEe
may be in the oxidatioo of the amonium ionrduriag the dryiag of the
yellowcake and subsequent collection in the fly ash. The presence of
oitrog"o oxidizing bacteria in the tailings ce11 could produce nitrates,
but such a species would need Eo be extremely tolerant to highly acidic,
saliae solutions. It is not likely that r*onia can oxidize readily ia
the tailiugs cell at Ehe given conditions of pH and Eh.
ttre *ill eedinsaEetion poad (Baker Lake) is an rrnlinod"col.lcetioc pod
located io,ahe eoutbrreeE. eorner of Ehe uil1 and facilities area and
in'nediately north of tailings Cell 2. Ttre purpose of this pond is to
collect and retain sediment and runoff water from the facilities area.
The poud should be dry except after a precipiEation event while evaPora-
tion of the runoff occurs. I{ater has been reported in Ehe sedimentation
pond eiace June, 1980. The source of this water is reported to be from
iunoff, ni11 processes, and start-uP-tyPe oPerations.
Concentrations of parameEers in the sedimeutation pond are generally an
order of nagnitude lower than in tailings Cell 2. Ttre water is basically
sulfate-rich with moderate concentrations of chloride, sodium, calcium,
and magnesium. (Nitrate concentrations are not elevated above values
which are generally considered harmful to plants and animals.) The
solution is acidic, although not to the same degree as tailings Cell
2. Neither the sedimentation pond nor tailings Cell 2 contain detectable
amouats of bicarbonete ion, and consequent,ly, the waters have no Eeasur-
able alkalinity.
In evaluating either one of these surface waEers as the source of water
in WeIl 7-2, it is appareot that Ehe concentrations of the major comPon-
ents are considerably differeot so that identification of the likely
source should be possible. However, etaEer in Well 7-2 Ls not as concen-
^ traEed as either CeI} 2 or the sedimentation pond source with respec-t to
o T "or" p.r"r"ters -(dulfate, r'chloride, (odi.rr, 6agnes iumr r{otassiuu, dnior-iai
r'-";-,tadionuclides r 4,cia.iry), and is Bore concenErated with respect Eo others[t "' (bicarbonate, calciuu, nitrate, alkalinity).
As previously discussed, the natural buffering capacity of the soils,
which is due to calcium carbonate, can neutralize acid in the leachate
I
/l\ -)- [*t rtlo
l]s-t
Ju^1.' 'i ' 'o ,'
!or* .! 6lcl/o'
l>[t c l-F tt o c: -"'
-t€;a11*p1tv./ 4ts'I -/tJ ,o, +l-P" r-?1-"
P n).
t --! / tJ.* :, b'-"t l) f'
,"r" ",' r tat
I and elevate the pH. This neutraLization reaction causes an increase in
I the concentrations of calcigm and bicarbonate in the groundwaEer and a
decrease in heavy metal and radionuclide concentrations.
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I Dr.Baker
I Because WeLL 7-2 is near boEh tailiags Cel1 2
pond, it was expected that Ehe concentrations
September 9, 1981
and the sedimentation
of najor constituenEs
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should be very sinilar Eo those in the source. Chemical reactions, such
as precipitation and adsorption, act to alter the chemistry of a water as
it moves through soil or bedrock, and such a mechanism will influence the
differences in coupositions between the well and Ehe surface ponds.
Eowever, one notable exception Eo these processes is chloride which fo:ms
ea6ily soluble sa1ts. Hence, it is not removed from groundwater by
precipitation or adsorbed by uost geological materials. Chloride ions
are considered to Eove at the sane rate as the groundwater, and Ehere-
fore, are.considered to be a good tracer. Although sulfate is not
stroirgly adsorbed by soils either, it is preferred over chloride in some
cases of adsorption, and it can be pr'ecipitated as gyPsum when the
solubility product is exceeded.
Chloride concentrations in Well 7-2 resalned relatively constant, varying
fron 83 to 99 ng/l fron JuIy, 1980 through February 1981 (figure 2). Ttre
chloride concentrations in Ehe sedimentation pond and tailings Cell 2
lrere recorded as 250 ag/l and 2,2O0 ng/l resepctively (faUte Z). Allorn'
ing for some dilution, the concentration of chloride iu Well 7-2 best
reflects that found in the sedimentation pond. Concentrations of all
other constitueuts in Well 7-2 are likewise more sinilar to the sedi-
mendation pond than tailings Cell 2. If rraEer was seeping fron a leak in
the tailings ce11, greeter concentrations would be expecEed in the
wel 1.
Comparison of Laboratories
As previously mentioned, splits of samples from VeLL 7-2 and the sedimenta-
tion pond were Eaken in September, 1980, and analyzed by D'Appoloniars
water quality lab and WAl,lCO Labs. Table 2 presents Ehe results from
D'Appolonia and WAI'{CO laboratories for rtell 7-2 and the ni11 sedinenta-
tion pond for comparison. Overal1, the results from Ehe Lwo laboratories
are very sinilar with the following exceptious:
o Amonia lueaaured by WAIICO in the sedimentation
pond is extremely high.
o Concentrations of r:adionuclides ueasurad by
D'Apploei.a rere sube'tantially highw tholt Ehe
values measured by W*litlCO.
These high values reported by the respective laboratories are probably in
error and are being checked by the laboratories. Besides Ehese few
parameters, the agteement is typically excellent. Therefore, the increas-
ing trend observed beEween pre-operaEional and operaEional data probably
cannot be attributed to differences in laboratories. Some differences may
be attributed to changes in sanpling Eechniques and personnel. Ilowever,
these are also probably sma11.
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Dr.Baker September 9, I981
other Considerations ,7.7
Dilution of the groundrTater has been mentioned as a reason for lower
concengrations in the well. One possible source for rnixing of waters
could be water fron the septic leach field. Other possibilities are
water from irrigation of sod at Ehe facilities, and construction-related
sources. Both conditions could cause rrater to intercept the water from
the sedimentation pond at a point upgradieot fron rtelL 7-21 however, such
occurrences are speculative and would be difficult to verify.
One item which has been investigated closely is the trend of niErate ia
the well from JuIy to Septenber, 1980. The source of the elevaEed
concentration of nitrate (I00 ng/f) in July, 1980, has been difficult to
identify because no waters which could be sources were found to contain
comparable Ievels of nitrate. In a conversatioa lrith Jin Gallagher of
WAllCO Labs in Casper, Wyoming, reasonable doubt was raised concerning the
validity of this analysis. Mr. Gallagher suggested Ehat a sample may
have been collected for nitrate analysis with a bottle previously acidi-
fied with nitric acid. Other possible sources of nitrate could be from
septic sludge or fertilLzet. However, the existence of such sources is
uot knosn.
Conclusions
Based on
Well 7-2
following
the preceding discussion,
is the sedimentation pond.
facts:
the uost likely source of water in
Ttris conclusion is supported by the
o Water in t{ell 7-2 Ls not similar to local ground-
rrater quality or elevation.
o Water in Well .7-2 is closer in chemical composi-
tion to rrater from the sediuentatioa pond than to
water in tailings CelI 2.
o Chemical coocentrations of some key componentst
such as chloride, should be sinilar in both
Well 7-2 and its source. Ttre concentration of
chloride and sulfate is far too small in the well
for tailings CelL 2 to be Ehe source.
The sedimentaion pond is directly upgradient from
IteLL 7-2. Ttre tailings cel1 lies between Ehe well
and the pond, and it is lined with an imperneable
seal. Ttre sedimentation pond is not lined and
water can percolate into the s,rb",r ere it
could flow beneath the impermeable seal of the
tailings and intercept Well 7-2 at depth.
Changes in chemical couposition between Ehe
sedimentation pond and the well water are attri-
buted to chemical interactions between the ground-
rraEer and the geological material chrough which it
U,L; LJ
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,) r
Ve *,? --I/
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td,1 r-.t ) i '! ,l
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Dr. C.E. Baker September 9, 1981
oChangesinchemicalcompositionbetweenthe
sediientation pond and the well water are attri-
buted to chenical interactions betlfeen Ehe ground-
I,ater and the geological maEerial through which it
flows.Dilutioo'"ychangeEhelevelsofconcen-
trations by nixiug of two waters' but another
sourceofwateriaEheir',mediatesubsurfacehas
not been verified.
OVERALL SUUUARY AND CONSLUSIONS
Groundwater lrater quality data from Pre-oPerational and operational
(through I'ebruary fggf) pt"".t have been reviewed. No indicatioa of
1ocal groundwatel degradation attributable to the ni11 or tailings
"p"r.ai." is evident from these data. IndicaEions of a chauge in water
quarity in I{elI 3 are considered to possibly be the result of poor water
;;;i;"to Wett g. Eowever, the consistency of the conceotrations measured
,"""oiry nay indicate that static conditions have beea achieved'
Ttre possible sources of water ia l{ell 7-2 vete also evaluaEed' ResulEs
oi-ai" evaluation indicares that the aoet likely source.ie the sedimenta-
;ir;';";;-a;;k;; Lake). rtre basis for this conclusion is the comparison
oi-rri.r quality data and the elinination of oEher known possible sources'
ii" n "a"r'qualily comparison for lleLL 7-2 and the sedimenEation pond as
detector and sourc., i""p."tive1y, is not exact and other unknona sources
riy U" contributing or "arrsiog tire aetection occurrence of water in Well
t-2.
Ifyouhavearryquestionsorwishtodiscussanyoftheseitems,please
contact us.
Very truly Yours,
e*d-E-CNNN*
Corwin E. Oldweiler
Project Engineer
,6y-/e4
Roger L. Olsen
Project Geochemist
CEO: RLO: klg
cc: II.R. Roberts, EnergY Fuels
D.K. Sparling, EnergY Fuels
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.T'ABLE 1
y,*:ffi *;r;"
?ltru'in'* ',"1
('"'
'
,)^'' wtil 7'L
-ffi':A['l*'*'
f\-ktp,J'
mr," s{s-)
r'{AY 1980 - SEPT 1980
WATER QUArrlY PAXAITETER COISSRTSON
,ELL 7-2 "rU ,g11 5(1)t
I
PARAUETER
t-z(D
SEPT 1980
Specific Conductance
H::::::.,
otal Dissolved Solids
olids
Standard Units
micromhos / cs125'C
ng/I as CaCO3
ug/I as CaCO3
ne/t
JULY 1980 -
t .s+!.tt
tgggttgz
togtgt
eootsg
lffi*tgg
z .oot . t+
zt+go!tzo
silolnq
oott+g
ffi!rzo
+ea!z+
$z!n
tgt4
aats
5t!4
ffitrzo
aoott+o
oto
o.z9t.oa
.s7 (a)
s.str.s(5)
H::::::
J;:::::".."
Carbonate
]r,ro'ia"
Nitrate
]t"oi,-
alcium..
otassium
ggtg
teotz
tot4
agtt t
ggt5
ffi%s
zos!t+o
oto
o.5tt.zt
sg!5s
/.GQl- _----
rylt
rre/t
ng/L
urg/L
rylt
wlt
rrg/t
ry/t
ry/t
loe/ f
re/t
ll,]*.rrses lrere perforned by WAI'{CO Lab of Casper, Wyoming'
-(2)f*---. statistical {ttafrwiEh standard deviaEions {*-a
r &k d€.
f(:)V"f,res are statistical reans wi;h standard deviations tor a"
data seEs., .
tcolo".rage of two values.
-(5 )ygsn determined for four vatues 'I
T
population of *rr,
population of five,
Sodium
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Df ' f YJ\ a'-'tv "' "hou;
\ k_r/J "-'t t - t"\- ,!\: q,l,o, G_, (wr
', ,t,el-Yfn-*" rtr,r*' d- wcl\l'
g9lfi,Alt1ggx(1) Wit"'e,--
L v'TASLE 2
QUAIITY PAM}IETER
WELL 7-2
l, n il\ L(-
a( 2)b;.€)*",
UILL SIIE
SEDIMENTATION POI'ID
(gextn's LAKE)
TAILINGS
csLL z(3)
PAM}TETER I'NITS
urA.atc'
7(J)
\/ Appot",.,-r( 3)
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pH
Specific Conductance
Acidity
Total AlkaliuitY
Bicarbonate
Carbooate
Chloride
Nitrate
Anoonia
Total Phosphate
Sul fate
Total Dissolved Solids
Metals
ffi"-ilic
Calcir.m
Magnes ium
Potass iuo
Sodirn
Ilranium
Radionuc 1 ides
Gross alPha
Gross beta
Ra-226
Calculated Values
Cat ions
Auions
Cat ioas-Anions::XIUUCat ions+An].ons
ND = Not Detected
s. u.
r,mtros/cm
ng/1 caC03
nglI CaC03
BCl r lico3
rnel 1 CO:
8C/L
w/l No3-N
ngl1 uH3-t{
nc/l PO4-P
uiglL
Egl1@180'C
r;rglL
trie/L
urg/L
urg/L
trle/L
ss/t
pcL/t
pci/L
pci/1
rneq/1
raeq/1
Percent
7 .55
1454
190
232
0
83
8
I{D
3.7
538
l?18,
e. es4(4)
164
59
9
101
20
3.4
1.8
0.2
L7 .55
L7 .33
0.91
6.60
i400
<2
175
2L4
0
77
L2
2.2
5.75
250
i I5Q
0.025
155
44
4
94
28
57 .4
7.4
0.23
L5.54
11.07
-16.8
4.46
2550
14
t7
0
270
2
116
0.72
1 108
228t
9.6s2(4)
212
100
33
250
,G'
22.0
55.0
3.5
30.52
30.94
-0.68
4.00
3700
38
0
0
0
250
3.5
0.r5
0 .56
1300
"1140
0.t74
145
72
t7
r20 ,'-]9'
1 ,700
444.0
2.1
2L.85
34. 15
2L.9
I .10
87000
3800
0
0
0
2200
24
3.0
160
35000
58100{'
35 .8
90
1800
405
1400g
114,000
74.0
180
223.7
790.4
55.9
(i)531ys1s for samples taken on september 19,
otherwise indicated.
I (2)6rr.1r""s perfomed by WAMCO Labs; VeLL 7-2 dated October 21, 1981, WAMCO No. 1903;r Baker Lake, dated October 13, 1980, WAI'{CO No' 1907'
I
(3)4ns1yses performed by D'Appolonia saEer laboratory.
I (a)1sgs1 anaiysis.
I
1980; all parameters are dissolved unless
t q/Ls W.hWruW,@WWA
ED
=
ttlFfl
a
t
I
t
I
I
UEGEND:
---+-- WELL
-.+- IYELL
---+-- IYELL
-.6_
WELL
--c-- TYELL
-...-x-- WELL
I
?
3
4
5
7-Z
pneoplnanoruau I I .r.t^t'.-*
PHASE PHASE
MONTHS/ YEAR
CHANGES IN
SULFATE COIICENTRATION
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVEd, COLORADO
E,:Ltr',E','()r{xvLq.
E'I
=
lrlo
E.o
(J
MONTHS/ YEAR
}EGEND:
---€i--- WELL I
'.YELL 2
--+-.- WELL 3
# WELL 4
-+- WELL 5
WELL 7-2
OPERATIONAL
II.*-xx'
t.A
\u".'
?
i\_.)
FIGURE Z
CHAI.GES IN
CHLORIDE CONCENTRATION
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
E}:l.tr{',(Dl{'}NLq'
)
or
=ao
=I
al!
J
8Lo
F
P
I
I
I
I
I
I
I
I
MONTHS/ YEAR
LEGEND:
---o--- WELL I
+'- WELL 2
--+-- WELL 3
# WELL 4
-+- WELL 5
--.-x-- WELL 7-2
/t^o'io\I
,u'
ttLG b*c: I
/..
./' p1-4-
FIGURE 3
CHANGES IN
TOTAL OISSOLVED SOLIDS
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
OENVER, COLORADO
ilD.^\PL\DI.A}I\fL}.
I
ED
=
=
oo
U'
{' l ,--4
n---
I
/Al
I
!
r'A
^Lrr
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t
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I
MONTH S / YEAR FIGURE 4
CHANGES IN
SODIUI' CONCENTRATION
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVER, COLORAOO
LEGEND:
---€.-- WELL I
-.+.- WELL 2
--#- UELL 3
# WEII zt
-*- UELL 5
wElr 7-2
ilD?LWry\D\{DNJLq.
t
-r
I
)/,
/
I
I
I
I
I
I
t
I
I
t
6'5J'
MONTHS/ YEAR
LEGEND:
---o-- TYELL
-.-+- WELL
--+'-- WELL
.-C- tilELL
-+- WELL
-...-x-- tflELL
I
?
3
4
5
7-2
I(\J
@(o
I
@
=E
i?a7u
=E(r=oz
\
\.
\
\
rl \. 1t-1I
\
I
\\
\\
\
t
\t
J
l9
FIGURE 5
CHANGES IN
pH
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVER, COLORAOO
Ebi9,,PL\D\A)NE^T
- 4.O
oI
@
S 3.o
I
==6
,E
I
I
I
I
I
t
I
I
MONTH S / YEAR FIGURE 6
CHANGES IN
RADN.,U - 26 CONCENTRATION
PREPARED FOR
ENERGY FUELS NUCLEAR, lNC.
DENVER, COLORAOO
LEGEND:
---€r-- WELL I
--.o-- UELL 2
-.#.- UELL 3
'* IELL 4
-+- UELL 5
--.-x--- WELL 7-2
ON
79
J
r98
EDlLtr.ry'{,b\,{DFTIL}.
I
=gD
=mtrlF
zo
CI
E,
9
@
I
T
I
I
t
T
t
I
MONTHS/ YEAR
LEGEND:
---+-- WELL I
-+- WELL 2
--#: u€LL 3
# WELL 4
-* WELL 5
--.-x-- wELL 7-2
4
it
I
I
I
I
I
PHAsE -l I PHASE
VA
/
I
OPERATIONAL
FIGURE 7
CHANGES IN
BCARBO{ATE CONCENTRATION
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVER, COL0RA0O
ilb'^L,Pil\.blADF E q.
) eoo
=
=
=_q 3oo
o
I
t
I
t
I
I
I
I
MONTHS/ YEAR
IfGEND:
---+--- WELL I
-.+.- WELL 2
--+-- WELL 3
* WELL 4
-*- WELL 5
--.-x-'- WELL 7-2
OPERATIONAL
o
FIGURE 8
CHANGES IN
CALCIUM COI{CENTRATION
PREPARED FOR
ENERGY FUELS NUCLEAR, INC.
DENVER, coLoRADO
E}:qJry4,b'i{}larLl
Attachment G
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Attachment G
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Proj ect No. RI'{78-6828
RF.CEIYED
OcI 5 19Bl
Dr. C. E. Baker
Energy Fuels Nuclear, Inc,
151.5 Arapahoe StreeE
Three Park Central, Suite 900
Denver, Colorado 80202
Correct ion
Lffip-ort
AssessmentaffiTer
Dear Ed:
Attached is a corrected copy of Table 2 ftoa
ment of Groundwater Quality, dated September
&r*oss beta values for the sedimentation pond
have been made.
If you have any questions, please call me'
ciG-d\\-\>-+-
Corwin E. Oldweiler
Project Engineer
CEO: par
Enclosure
II. R. Roberts
D. K. Sparling
BECKLEY. WV
PITTSBURGH, PA
CHESTEHTON. IN
Xc'i //il/6uG6D)W.
'dE/+
-6t/u
our Letter RePort, Assess-
9,1981. €gf;r,sctions in ttre
and tailings CelI 2 analYses
\ r r r)o
t"'Cl'o-1'A
6-{t4' V ca"t I
u')'r'ble 2'- 4 t/''L *"T P
( ql qlg) '|'l7PL"r /- l/-D
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? *Lt
74OO SOUTH ALTON COURT, ENGLEWOOO, CO 801'I2 TELEPHONE: [phone]'3464
CHICAGO, IL HOUSTON, TX
TELEX: 45-4565
LAGUNA NIGUEL, CA
SEOUL, KOBEA
T)A]IDIDO]LONfA
CONSU LT IN G
September
ENGINEEBS, INC.
28, 1981
ua1 it
WILMINGTON, NC BRUSSELS, BELGIUM
I
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I.IATER QUALITY
TABLE 2
PARAMETER 6g6,6x1ggg( I )
WELL 7-2
MILL SITE
SEDIMENTATION POND
(rAxrR's raxr)
TAILINGS
6s11 2(3)-'--J-r
2 /tf?taob'
PARAMETER
*[rV ';7ilt".
;(3)Y6 o;t{,''*''a
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pH
Specific Conductance
Acidity
Total ALkalinity
Bicarbonate
Carbonate
Chloride
Nicrate
Ammonia
Total. Phosphate
Sul fate
Total Dissolved Solids
Metals
A.seni-c
Caleium
Magnes ium
Potassirn
Sodium
Uranium
Rad ionuc 1 idescro-ss;Ttf
Gross beta
Ra-226
Calculated Values
catEns
-Anions
Cat ions-Anions:--------:- x 100cat 10ns+An10ns
ND = Not Detected
I (1)6ns1rrir for samples taken on September 19, 1980; "t1*e-argaeters are dissolved unless
otherwise indicated.
I (2)ar"1rres performed by WAI,ICO Labs; llel]- 7-2 dated October 21, 1981, WAMCO No. 1903;
I Baker Lake, dated October 13, 1980, WAHCO No. L907.
(3)4na1rses performed by D'Appolonia water laboratory.
t \+/ToEal analysis.
urnhos/cm
ng/L CaCo3
mgll caC03
mgl 1 ticog
mgll Co3
ac/L
ECll NO3-N
ngl1 NH3-u
ag/L to4-t
rr.g/L
rng/1€180"c
ne/t
nc/l
uig/L
ag/L
mg/L
ng/L
pci/L
pci/L
pci/L
meq/1
neq/1
Perc ent
7 .56
t454
190
232
0
83
8
ND
3.7
538
1218
e. es4(4)
t64
59
9
101
20
3.4
1.8
0.2
L7 .65
17.33
0. 91
6.60
1400
<2
175
214
0
77
72
2.2
5.75
250
r I50
o.026
155
44
4
94
28
57.4
7.4
0.23
L5.54
11.07
-16.8
4.46
2650
74
T7
0
270
2
116
0.72
I 108
2281
e.ss2(4)
212
r00
33
.250
49
22.0
55.0
3.6
30.52
30.94
-0.68
4.00
3700
38
0
0
0
250
3.5
0. 16
0.56
1300
2L40
0.174
r45
72
17
190
18
1,700
444.0
2.L
2L.85
34.L5
2L.9
1.10
87000
3800
0
0
0
2200
24
3.0
160
35000
58100
35 .8
90
1800
405
1400
87
I 14 ,000
74.0
180
223.7
790.4
55.9
I
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Attachment H
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,i,
(
I\,
Dr. C.E. Baker
Energy Fuels Nuclear, Inc.
Suite 900
Three Park Central
1515 Arapahoe
Denver, CO 80202
Dear Dr. Baker:
BECKLEY, WV
PITTSBURGH, PA
.CHESTERTON. IN
"AWW@W-@W[A
CONSULTING ENGINEERS, INC.
November 30, 1981
ProjecE No. RU78-582-G
INTRODUCTlON
The operational phase groundwater monitoring program
Wtrite Mesa Uraniuro ProjecE have been assessed and a
developed. Ttre recommended program is a revision of
tional phase Program. The work has been conduct'ed in
scope oi work-ouilined in our letter dated october 5,
The recoumended operational phase nonitoring Progr?m has been developed to
Beer criterion 7, Appendix A' cFR Part 40. specifically the proposed
gio.roan.ter uonito.ir,g prograu will enable evaluation of coopliance
iittr appticable standaris, perforuance of control sysEeEs and-procedures,
evaluation of environmental inpacts and deEecEion of potential long-tern
effects
The proposed program is based on a coEParison of the chemicals occurring
in the lailinis Iiquia and the cheroicals naturally occurring.in-the
groundwaEer at the Wtrite Mesa Project. In addiEion, geocheuical processes
and reactions which would occur if tailings liquid seeped through Ehe
substrata, were applied to Ehe results of the above comparison to deter:ruine
which chemicals and other Paragegers should be mosg effected and changes
in water quality observed. These chemicals and parameters were selected
to accurately deEect changes in the groundwaEer quality d,u9 to--leakage of
tailings tiquia. Other studies have shown Ehat for the White Mesa siEe'
the telgth of tir. required for the saEuration fronE frou leakage Eo reach
Ehe groundwager Eabld is large and when other frctors such as dilutioa'
displrsion, and geochenical reactions are considered, the pogenEial for
detecting leaks irom the tailings cell during Ehe life of the facility is
smal l .
requiremenEs for the
recommended program
Ehe existing oPera-
accordance with the
I981.
74OO SOUTH ALTON COURT, ENGLEWOOD, CO 80112 TELEPHONE: [phone]'3464
CHICAGO, IL HOUSTON, TX
TELEX: 45-4565
LAGUNA NIGUEL. CA
SEOUL, KOBEA
White Mesa Pro-iect
WILMINGTON, NC ERUSSELS, BELGIUM
{
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November 30, 198iDr. C.E. Baker
The following sections of this letEer rePort Present the assessEents
conducEed foi ttre naEural groundwaEer, geochemical processes, recommended
moniEoring progran, and recommended sampling and quality control methods'
COMPARISON OF TAILINGS LIQUID
comparison of the coEposition of the tailings liquid and the groundlater
is necessary when developing a rationale for a groundwaEer monitoring
progrErrtr because the conparison identifies which cheuicals are not found or
are-m,rch less concenErated in Ehe natural groundwater.
The chemical composition of the tailings liquid and naEural groundwater is
;i;." on Table I. values given-on Table 1 show that there are substan-
tial differences between the tailings liquid and groundwater for many
parameters including:
o pII
o Chl. oride
o 'Sulfate
o Aluminum
o Arseni"'"'l
o Cadoium
o Calcium
o Chronium
o Copper
o Iron
o Magnesium
o Manganese
o Sodium
o Vanadirn - 7
o Zinc
o Gross AlPha
o Gross BeEa
o Lead-210
o Po loniurn-210
o Radium-225
o Thoriun-230
o Uraniuu
ni
"'611"r: lJ *+
' ,roul ilt2
-TD'
P --1"'a\
p,
113
flo{''o;tt'r
I
5 /1toJ,
$t"*"
-'" -'* a 5
However, it is not considered appropriate Eo measure each of these Para-
r[et,ers on a routine basis because some chemicals Eend to Eove together and O/(
somechemicaIsrri11bereaovedfromso1utionbygeochenica1processesand
reactions if the flow of Ehe tailings solution occurs through the substrata'
The geochemical processes are discussed in the following secEions' These
Processes ,." g.,,"'ic and occur if acidic tailings liquid Eov-e: through
iii"rr"o.rs soil o. roct. The discussion is specific Eo the wtrite Mesa
rio5""t only in Ehat the tailings liquid is acidic and the substraEa is
calcareous.
GEOCHE},IICAL PROCESS ES IN THE SUBSTMTA
The major geochemical processes wtrich occur if tailings liquid flows
Ehrough calcareous substraEa are:
o NeutralizaEion
o Precipitation and Co-precipitation
o SorPtion
The following paragraphs briefly discuss several of rhe najor geochemical
processes "rd r"".Iions with regard to specific chernical paraneters'
m'^\PP,@W,@b{ iI'*\
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Fr I
ELEMENT RXTARDATION FACTOR
Chl oride
Sulfate
Acidity
Manganese
Uraniuu
Radium
Iron
Thoriuu
1.0
- 3.0
- 4.0 r 1- 2,000 (pH=7 .o)| n"tl b"/"/
- 3,OOO (pH=7.0)./
- 4,000 (pII=7.0)
- 70,000 (pH=7.0)
- 100,000 (pH=7.0)
| .)
Qr. .,1 *,r,'t
@ Pl-
ci'o
/'
t'
\/ kA: *.-r-
Dr C.E. Baker November 30, 1981
If rhe acidic tailings liquid (pH = 2) leaks frou a cel1, the liquid
reacEs with calcite (CaCO3) in rhe substrata. This reaction neu-
tralizes Ehe acidic tailings liquid and the pH increases. At approximately
pH=3.5, iron oxyhydroxides begin to precipitate. Aluuinum and rnanganese
oxyhydroxides also precipitaEe from soluEion as the pH increases.
Other heavy meEals and radionuclides from Ehe tailings iiquid are co-Pre-
cipitated lnd sorbed by the oxyhydroxides. Some nonmetals such as
arsenic and seleniuu are also effectively removed fron the tailings
I iquid .
Elements in the tailings liquid which are not as effecti,vely co-prqcip-
itated or sorbed include chloride, sodium, sulfate, ca$.um and uaffisiuu.
Calcium and magnesiun witl be removed from the liquid by-sorption an0
ion exchange mechanisms. The quentity reuoved depends upon the cati6n
exehange capacity of the substraEa and, the aount of divalent iona pracenE.t
As the acid front Eigrates and reacts with the calcareous substraEa,
calcium ions are released in accordance with the following equat'ion:
2II+ + caco3 = ca2+ + co2 + It2o
The increase in concentration of calciuu ions causes the solubility
producE constant of gypsum to be exceeded. Ttrerefore, SyPsue (CeSO4'2rr20)
will preeipitate."roriog both sulfaEe and calcium ions fron the solution.
Sinilarly, rhe concentration of radium in the leaking tailings liquid is
primarily sinilarly controlled by the solubility of radium sulfate'
Overall the most nonreactive element is chloride. It will tend to Inove
wirh the groundwater.It) -- o
The relative degree of nobil ity ofr/che various eleoents in Ehe geouedia
can be assessed by a Eem caLledr/che retardation factor' For example, Ehe
retardation factot fot chloride/is 1.0. Ttrat is, if tailings liquid
leaks from a cell, the chloride ion does not reacE in the subsoil (is not
reEarded) and Boves with approxiuaEely the saue velocity as the tailings --
liquid. Ilowever, eteuents-such as iron may have retardation factors of
5O;O0O at a pH of 7.0. Ttrat is, Ehe iron would move at a velocity 50,000
Eimes slower than the naEer molecules. Ilowever, retardation factors for
Eetals such as iron are pH dependent. At a pI{ of 1.0, Ehe retardation
factors for alI elements are extreuely low (all the eleuents are very
mobile). Ilowever, as Ehe pll increases, the retardaEion factors increase
substanEially. Typical retardation factors for criEical pararueters are:
L22.0
I ,000
,.)*5p9,'t 2 r 000
40,000
50, o0o
a',t 'n t.!. p -{
M'^LPW;@W-@WiL'ax
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Dr. C.E. Baker November 30, 1981
These values are Eypical for sand--and-;il.gy-s-end wirh two Eo three
percent calciuu carbonaEe.
In summary, if tailings liquid flows Ehrough Ehe substraEa the following
sequence of change" (Il"t"i in order of increasing response time) in water
quality, based oi ttre geochemical processes discussed above, should be
obsenred, ^\ l"
\r
o ElevaEed levels of chloride and sulfate should be I *-,o.
observed initially. Elevated concentrations of i" l^ \
chloride should occur before sulfate. Ilowever, '.J
\n
increases in sulfat€ concentration are tyPically $r :,
easier Eo observQ ae Ehe concentration of sulfate Y % i , i,
in the tailings solution is nuch higher Ehan that L-":, & ] t--
of chtoride (Iee Table I). i i- '" t1q 3"N
o Increase in calcium may be observed as the calcite f9 i s I --,
in the soil reacrs with the tailings liquid i q;^S
i u'\ !-r
o' Decrease in pH should be obseri'rred. -/9i I * {d
o when rhe plt decreases'below 5.0 Eo 5.0, increase in / 'd 'l *
radionuctide concenErations should be observed' -l
Radium and uranium should be observed firsr'
The above analYsis
of tailings liquid
sequence of events
should address onlY
Eeters of tailings
of analysis for the
sect ion.
of the geochemical processes indicates that the movemenE
through the substrata should follow a predictable
if leakage occurs. Therefore' routine noniEoring
the paraueters which are the initial indicator Para-
liquid Eovenent. Ttre indicator Parameter" "19 frequency
recoumended program are discussed in the following
RECoMMENDEDoPEMTIoNALPH.&SEMoNIToRINGPRoGRAM
The proposed operational phase groundwaEer monitoring program has been
J".r"iop.a basei on Ehe prlceain! discussions concerning tailings liquid
chenical composition and geochemical processes. The proposed program is a
staged type program with ielected indicator PerameEers ,oeasured quarterly
in ltre tieta; dditimaL indicator and accuracy assess'ent g*i*'a,ete&s
measured ltffiiarrfiual f- irn , a laboralory'{ and
_
a f ull suiCe of parameEers
measured annually in a laboratory. criteria and evaluation schemes
for evaluating tire results from lhe quarterly and semiannual indicator
parameters have also been developed. The proposed ProgreE is discussed in
detail in the following p"."g..phr. The parameEers Eo be ueasured during
each sampling period aIe'proria.a in Table 2- The evaluation criteria are
t7!wfu"ry
.1
{,. ,' p S-? t ::t t t'
,.! 0,o ,^a.p /-,t. / "
presented in Figures I and 2.
Quarterly Monitoring - l'iit lat'
Specific conductance and pH reflect Ehe possible seepage
cheuical species (chloride, sulfate, etc') and the relat
of the mobile
ively innobile
m^3\PW&ru@N,Ls.
t
t Dr. C.E. Baker November 30, 1981
chemical species (iron, radium, etc.) respectively. This is Erue because
increases in sulfaEe concentrations will be reflected by sinilar increases
in conductivity as approxinately 50 to 60 percent of the-conductiviEy in
the railings liquid ii a"" to sulfate. AIso, decreases in pH below 6.0
will typio"ffy indicate poEential increases in radionuclide concenErations.
Specific conductance and pH can also be easily measured in Ehe field. In
suBuary, these tlro parameters are the mosE iuportant indicacor Parameters
because they will maximize the probability that any change in waEer
quality is detected quicklY.
\( ^r>L l,iater levels should be monitored quarterly as changes can be useful in
Y/- evaluating results of laboratory analyses. The temperature of the naEer
must also be measured so that the specific conductance readings can be
corrected to 25o celsius.
The data from each quarterly noniEoring period should be reviewed to
determine if signifi""rrt changes have occurred. Specifically, Ehe follow-
ing evalpations should be perforaed:'7')"
o - Specific Conductance - The mean of the first \ ( )@nal daEa should be used as the \---/
basis for conparison. These data show fairly ^, ).J- ^ I
constant values. Therefore, the standard deviation f ltb'<^a tlt'l
will be relatively srnall and differences in new t,,] nypc r {rla*-
treans can easily be detected statistically' The *' fn- /r\ I
preoperaEional daEa have large st,andard deviations - aLctlac"l la ''
and increasing values. Therefore, the preoPerational ^t r ,,'
treans are difficulE to use in sEaEistical evaluations. O, n-r''Pi,"
l
The evaluation scheoe for specific conducEance
-f-ip^"-'h
quarterly rneasureurcnts is given in Figure 1 '
Evaluation follows a sequence of decision steps or
actions. The first sEep is to coEPare Ehe current
value of the specific conductance (each quarterly
measureEent)tothemeanofthefirst12nonths
operational data. If an increase of over ten
Percent is noted in specific conducEance, four
replicatesamplesfromonlythewetl(s)whichhad
Ehe increased values should be collected over a Elro
dayperiod.Theueanofthesefouranalysescanbe
compared to the mean of Ehe firsE 12 months of
op.t.tional data by use of StudenE is rrErr test'
The decision second step is couparison of Ehe mean
froo the four analyses Eo Ehe operational dara
Eean. If the mean shows a statisEically significant
increaseaEtheggpercentconfidencelevel,the
Paremeters listed on Table 2 as semiannually
ParaIDeEers should be analyzed irnuediately' In
particular, TE, chloride and sulfaEe should be
analyzed in the four samples already collecEed'
The mean values for TE, chl.oride and sulfaEe can
ru,^APruW-{&WL&\
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Dr. C.E. Baker November 30, 1981
/'=-i./
Ehen be statisEically evaluaEed by use of SEudent's
ttt tt tes r .
The third decision step is evaluaEion of the means
for TE, chloride, and sulfate wirh operational
data means. If this cooparison reveals a sEatisEic-
ally significant increase, a change in water
q,r"iity may have occurred. The tailings cells may
Ue lealing and additional evaluation should be
performed. This evaluation should include an
""""""r"ttt of the analytical accurancy of the
laboratory data (discrrssed in the next section) '
The evaluation should also include an assessEenE as
Eo lrheEher the increase in concent'rations is
significant in terus of degradaEion of rhe water
quality .elatea-to it, use (agricultural versus
ionesric, eEc.) and appropriate sEandards or
regulations, environmental iupact and poEential
. long-term effects
o oII - The evaluation scheme for pII follows an i
a=pproach sinilar to that discussed above' The
t"t,"r. is given on Figure 2. If the pll drops below
6.0, the potential for uigraEion of heavy metals
and radionuclides exists. Therefore, if a quarterly
sample indicates a pH below 6.0, four replicare
""rpl." from only the well(s) with the l.ow values
strouta be analyzld. If values below PII = 6'0 are
confimed, the Paraneters listed on Table 2 as
semiannual parameters should be anal yze.d. specific-
ally, the gross alpha concenEraEion should be
araiyzed in ttre four samples already coltecEed'
The mean of the gross alpha can Ehen be EesEed
using Student's ttt" test.
If a significant increase in gross alpha activity
is confirned at the 99 Percent confidence level,
the radionuclides listed in Table 2 as annual
parameters should be analyzed to confiro which
radionuclide has oigrated into the monitoring well'
If significant increases in gross alpha activiEy
and radionuclide concenErations are confirmed, the
daEa should also be evaluaEed as to its analytical
accuracy and significance in Eerus of raLer quality
standards, enviionuental impacEs and potential
long-tero effects.
If increases in specific conductance are belors ten PercenE-and-pll levels
ao ,,ot drop belo"'0.0, rougine moniEoring as outlined previously should
cont inue .
YD,-\PPIAW-@W}{'E\
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November 30, l98I
Seniannual Monitoring
To periodically check the specific conductance which is measured in the
fieia, chloridl, sulfate and Eotal dissolved solids (tm) concentrations
should be measured semiannually. To check the pH measureEenEs and the
possible movements of radionuclides, the concentration of gross alpha{
radiation should also be measured semiannually'
These semiannual measureEenEs will provide confirmation of the quarterly
readings. chloride, sulfate and T6 concenErations should be measured Eo
determine any possible movemenE of nobile chenical species while gross
alpha should be analyzed to deEermine any possible movement of meEals or
radionuclides. cross alpha is a good indicator of radionuclide acEivity
froo uranium, thorium, radium and polonium'
Dr. C.E. Baker
Table 2 lists al
EssentiallY alI
cells should be
lytical accuracy
r!l
.JJ u-i*"'
6 N&\1- tu""l
{ n"aT c*-
D,rLq,**')
d c,[e rt ]tj,n- t
a"i^ve I,J
Cov, yl; a t
fX'-'c
In addiCion to the the indicator Parameters listed in Table 2 and discussed
above, Ehe following accuracy assessmenE ParameEers should be analyzed:
o. Calcium Olc
o M--nesium
o Potassium
o Carbonate/Bicarbonate
o Sodium
The deEemination of these accuracy assessment ParaEeters will enable the
analytical accepEability of the laboratory values Eo be evaluated' The
nethodotogy for performing the evaluation of Ehe laboraEory analyses check
i;-;;;;."ila i" lt" rolloiing secgion on quality conErol technigues'
If no significant changes in the quarterly specific conductance and pH
values are observed, ni significant changes in the semiannual parameters
should be noted. However, if Ehe values for TE, chloride, sul faEe or
gross alpha shov more than a ten PercenE increase, four replicate samples
should be Eaken and the Eeans tested statistically by Studentrs rrtr! tesE'
r{
In addition, analyses from downgradient welIs should be coopared to
analyses frou upgradient we1ls. ThaE is, if analyses from the upgradient
well (We11 1) sholr increasing values, this increase in t'backgroundtt should
be accounted for when evaluated "rry ln"t""""t in concentration in down-
gradient wel1s. Ilosever, this strolta not be necessary as data has shown'
EhatconcentrationsofsulfaEeandT6arefairlyconstantinWelll.
A"""rt lto"itoti"g
1 parameters wtrich should be moniEored once per year'
p"l"r"a"ts with elevated concentrations in the tailings
Lvaluated. AII paraueEers necessary to assess the ana-
of the laboratory results are also deEermined'
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Dr C.E. Baker 8
RECOMMENDED GROUNDI^IATER SAI'IPLING
GroundwaEer sampling and qualiEy control techniques are d
these iEems are considered critical in obtaining accurate
results from the recommended Program specifi'ed above'
Groundwater S amPling Techniques
o W.tg-S*pti"g
- Measure the staEic q!91LeYrsI of
- In order to obtain a lrater sanPle
each well. "
that is free
conEaminants and is representative of formaEion
t ater, bail or pump from each well a volume of
rrater equal to tlro times the volume Ehat is
stored in the screened inEerval, or unEil a
constanE value for specific conductance is
obtained. The well may be bailed froo the
surface of the lrater. If uPon evacuation of
well the rrater supply is depleted, allow the
to recover for 24 hours and then sample Ehe
without additional bailing or punping' If
the
well
lra E er
bailing, lower the bailer to the mid-point of the
screened interyal for sample collection'
as discussed above;
of Eemperature, PH,
, unfilEered, unPreserved,
cations.
by the laboratorY.
o Ouarterlv Monitoring
- Collect a samPle of waEer
perforu field measurenents
and specific conductance.
- Retain samples for analysis of semiannual sanpling
parameters (table 2) if pII or specific-conductance
values indicate a change of waEer quality outside
the expected range of values.
o Semiannual Monitoring
- Collect sanples and perforo field treasurements as
outlined above. In addition, Beasure the alka-
linity in the field.
- For laboratory analysis, collect samples and
conEain as follows.
one plastic uottte(l)
for najor anions and
iscussed because
and reliable
November 30,1981
o[c
of - ^ *ln olL,'''{ 4'
2d'.J' .^irhlr
,":fi|;u_'u )
(T)si"" of the bottle Eo be detemrined
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Dr.Baker
one plastic bots1"( 1),
with sulfsr-ic gr-id, for
-*
one plastic bottls(1), filtereC through a
0.45 rnicrometer filter, preserved with qiqrjs-
,:!9 , for dissolved netals analYsis '
one or uore plastic bottles(I), filt,ered
through a 0.45 microueEer filEer, Presenred
"itt ljt.ig- ,lqia , for dissolved radionuc lide
analyses.
Noveuber 30, t98i
, q4i1!e-9, utr$9jjry9d , olL
an10ns.
unfiltered, Preserved
i"trlents analYsis.
D,L
OE
one plastic bota1"(1), filtered through a 0'45
nicrooeter filter, Preserved wiEh nitric acid'
for dissotved radionuclides (gross alpha)'
- Analyze for parameEers as outlined in Tab1e 2
for semiannual sarnPling '
o Annual Monitoring
- CollecE samples and perform field Eeasurements
as previousiy discussed; in addition perfortr a
field rneasurenent of alkalinitY'
- Collect and bottle samples for a full suite
laboraEorY analYsis as follows:
one
for
plastic boEtle( 1 )
oajor c:lions-egg
- AnalYze for Parameters
for Annual SamPling'
In order to niniuize oxygenation when
filtered using nitrogen gas' Saples
ice packed coolers and Eransported for
hours.
\"
as outlined in Table 2
filtering samPles, waEer should be
should be cooted to 4o Celsius in
laboratorY analYsis within 24
Oualitv ConErol Techniques
i ecision and accur acy -of dlta 1en11'::u in the
-L - ^l- - ^-theii"ii"r"o'i"i"r"a.ry, data checks should be performed' These checks on th
r L --- -^-.,1+a chnrrl rl ha nerformed for;:i;.r""r'"".";;;;iiiiy-"r-ir," l"bor"rory r"",rr::,.1::lo-::^,Tr::T.u
.;;';;;i;";;;i"ro.,iro.ing period. rhe recommended data checks are:
o Cation-Anion Charge Balance - The charge balance is- I accePtabilitY'
Idea1Iy, waEers are ellccrically neutral' and the
Eo be deEermined by the laboratory'(1)glrs of the boEtle
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10 November 30, 198IBaker
positive charges contributed by cations should
equal the negative charges of Ehe anions' To
calcrrlate the charge balance, Ehe concenErations of
the major cations and anions are converted Eo
r,i11ie[uiva].enEs. Ttre Percent is then calculated
by the following formula:
Cations-Anions t qZ dif ference = dTo""-A"I"rs x rUU/o
charse balances below ten percent usually reflect 0/L
good analytical meEhods.
o soecific conductance versus Meausred Total Dissolved +,J*conductance of a t'aEer
"-rjfa;pendenE upon Ehe number of charged
p".ii.les in solution, which is in turn a function
of tt" amount of dissolved solids' Depending on
che chemical composition of a warer, the ratio of
TE to specific tonducEance generally ranges from
0.55 to 0.77. C^mparison of these ParaneEers
provide a check for both analytical and instru-
mental precision.
Measured TDS Versus Calculateq]DS - The TB can
butions of the
najor cations and anions. The calculated TE value
provides check of the precision and accuracy of the
Lndividual analyses of the najor ions in solution'
A difference beEween calculated and measured TE
Ehat is less than or equal to aPProximately ten
percent is considered an indication of good labora-
Eory precision.
Fie1d oH Versus Laboratory PH - In order to check
er *y ry"-' v"eE-Yt-r
occurred fioo the time of sample coltection to the
time of laboratory analysis, a cooparison of Ehe
field and taboratiry values of pH should be made'
An acceptable range of change is 0'5 standard
unit s .
Field Atkalinity Versus Laboratrcry A!E?]!nity. -
ns of
determining whether the chemistry of a ltaEe1. slunle
has significantly changed from the tine of field
collecfion to th; rine of laboratory analysis' A
difference of t0 to 15 Percent between the field
and laboraEory deteroinations is considered accept-
able and indicates that no major changes have
occurred in the solution.
,ll
ut',)) o!uo',19 c l-'' Y a
Zu,, n' 5*' pis oAw
Al
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In addirion
recommended:
The proposed
..1
r , ll
t1pr i /r9 /-t lq l's
t'
l:1 :.."5:! ()Ur',l
Eo the above semiannual checks
Specific conductance rueasureoents will detect
nigration of nobile elements such as chloride and
,rIf.t". As backup confimation of possible
migration of tailings liquid, concentraEions of
TD6, sulfate and chloride are measured semiannually
or ,rh.n statistically significant increases in
conducEivicY are rePorted.
pH measurements will detect nigration of heavy
iet"1", and radionuclides. As backup confirmation
of possible nigration of radionuclides, gross alpha
act'ivity will be measured semiannually or when the
pll decreases below 5.0.
The basis for assessment of nigration is previous
data and statisEical evaluation'
The proposed evaluation scheme (four replicate
"rrpi"., sEatistical EesEs' etc') generally follows
thal reconnended by the EPA for.grounlf !:Iiig-
monitoring at hazardous waste sites (40 CFR 265'90)'
uoniEoring plan is cosE effective for Ehe following
The evaluaEion syscem is based on relatively
inexpensive. field measurenenE'
itt'+z@"
Costly laboratory Eeasurenents (especially radio-
nucliie analyses) are only performed when signifi-
cant increases are measured in indicaEor ParaneEers'
November 30, 1981
the following annual check is
oh^ A
r -"1-
D\, y!',,o i'
Split Sample Analysis - In order to evaluate the
ilffiy results, lrater samples
snoula be randomly selected for split sample
analysis. This should be done on an annual basis
for saruples froo one well. Sufficient samples
should L" "ollecEed at one time Eo fill a duplicate
The monitoring program outlined above, is technically accurate and cost
effective. 'fi is technically accurate for the following reasons:
set of bottles. The sample should be thoroughly
nixed Eogether before filling any bottles in order
to nininize sample variability. Label the duPlicaEe - , ,
, /l*,/LLsample with a separate sample designation. ResulEs - v!-e 2t.)
within ten perce4t are considered accepEable r r)d, . "a
rffical precision --:
ST'MMARY
t
6r"t [4e /ol'etz
k"e
reasons:
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November 30, 1981Dr. C.E. Baker
The recomuended
of being able to
the impacts from
If you have anY
S incerely yours,
operational monitoring Prograxo fulfills the requireuents
evaluaEe coropliance wirtr appticable regulations, EoniEor
the sysEen, and detecE PoEenEial long tetm impacts'
questions, Please call us.
,("g^/*'4
Roger L. Olsen
Project GeochemisE
a^-s-eN'A*-
Conrin E. OIdweiler
Project Engineer
RLO: CEO: ln
cc: It.R. Roberts,
D.K. Sparling,
Energy Fuels
Energy Fuels, Blanding
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COMPOS ITION
TABLE I
OF TAILINGS LIQUID AND NATURAL GROUNDI^IATER
TAILIN NATURAL
GROT'NDI.IATER( 2)GS(t
PARSMETER I]NITS LIQUID
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pH
Specific Conductance
Acidity
Total AlkalinitY
Bic arbonate
S ul fate
Chloride
Nitrate
Ammonia
Phosphate
TotaI Dissolved Solids
Aluminum
Arsenic
Barium
Cadmium
Cal c iuu
Chromium
Copper
Fluoride
Iron
Lead
Magnesium
Manganese
Mercury
Molybdenum
Pot as s ium
Seleniuu
Silica
S ilver
Sodium
Vanadiuu
Zir.c
Rad ionuc 1 ide s
Gross AIPha
Gross BeEa
Uranium
Radium-226
Thoriuu-230
Le ad-2 I 0
Po Ionium-2 I0
fiia,a
---.-----_
'?7*'112-'
' {,2t4)
--_(
-
'/
I48,510
(95,346 calc. )
330 -
5.90-
<0. I
2.50 -
560 -
6.24-
265-
0. 02
r7
6. 00
4,000 ._'
222 --
17.6
r.3
0.18
400
0.14
4,200 -
510 *
63.0 -
s.u.
unhos/cuG25'C
mg/I as CaCo3
ng/l as CaCO3
Ele/L
[g/1
ng/ 1
nclL
ngl1 NE3-r
mg/1 Poa-P
mgll G 180'c
ng/ I
uislL
rng/ I
llg/ I
aelL
ng/ I
ug/ I
rrglL
rrslL
rrglL
Eg/ I
wlL
mg/1
ug/1
Eg/ I
ng/1
urgl L
Ef,lL
rigl L
ng/ 1
trc/1
pci/1
pci/1
ulg/L
pci/ I
pci/ I
pci/1
pci/1
(1)6rr61ysis from Core Laboratories, Inc. analysis, Job
OcEober 5, 1981'
(.2)6n31r"is from moniEor well No. I (upgradienE), ApriI
period
6.8
I ,480
<2
262
320
520
l3
<0. I
<0 .01
0.10
L,2L9
<0. I
0.002
0. 05
<0.001
130
0.002
o _2'
0.51
<0.01
49
0.21
0.0005
0. 19
7.8
<0.001
2.7
0.003
160
<0. I
0. 12
53,900+3,800 -
84,350+3,900 -
5.0 *
529+7 .0 *-
75,64cFt,640 -
20,700+800 .-
I ,410+54. 0 *
27+6
qzan
0.6043
I .9+t .0
o. oT2. 3
0.0T3.7
0.0f0.5
6307-W81381,No.
1980 sanpling
Wh^WYPq,{bW-{bF{W"P\
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TABLE 2
CHEMICAL PAMMETER
RECOMMENDED OPE RAT IONAL
MONITORING S CHEDT'LE
PIIA,SE GROT'NDWATER PROGRAM
ANNUAL SAMPLING
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PH (r)
ipecific Conductance (F)
Temperature (r)
A
Lq
o
TERLY SAI'IPLING
F = Parameter measured
L = Parameter measured
All radionuclides and
SEMIANNUAL SAMPLING
Indicator Parameters:
pu (r,L)
Specific Conductance (F,L)
Temperature (P)
Sulfate (L)
Chloride (L)
Gross Alpha (L)
Accuracv Assessoent Paraneters :
Calciun (L)
t'tagnesiun (L)
PoEassiuB (L)
Alkalinity (r,r.)
Sodiun (L)
Total Dissolved Solids (L)
Povl I'to 2
ffc,
\7
f'n
in field
in laboratory
neEals are analyzed
pu (r,l)
Specific Conductance (F,L
Temperature (r)
TotaI Dissolved Solids (t
Alkaliniry (r,l)
Sulfate (L)
Chloride (L)
Annonia (L)
trnosptrate (1,)
Aluruinuu (L)
Arsenic (t )
Cadniun (L)
Calciun (L)
Chromiun (L)
Copper (L)
Lead (L)
Itagnesir.rm (L)
Manganese (L)
Mercury (L)
Molybdenurn (t )
PoEassiuE (L)
Seleniun (L)
Sodiuru (L)
Vanadium (L)
zinc (L)
Gross Alpha (L)
Gross Beta (L)
Uraniun (L)
Radium-225 (t)
Thorium-23O (L)
Lead-210 (L)
Poloniuu-210 (L)
/V4-l /Uo2
for dissolved concentrations onlY
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QUARTERLY SPECIFIC
FIGURE I
CONDUCTANCE EVAI,UATION CHART
Specific ConducEance
Increase > L}Z Increase < L0"l
a) Collect 4 rePlicaEe
samples
b) Conduct StudenErs rrtrr
Eest on specific
conductance
Continue routine moni-
toring
"S ignifican " increase I No "significantrr i"gg:::
a) Measure seoiannual
paremeEers in 4
replicaEe samPles
b) Conduct Student I sttttt test on T6,
sulfaEe and chloride
ConEinue routine uonitoring
ificant increaseSignificant lryIg3-No sign
a) Evaluation of analYti-
cal accePEabilitY
b) Evaluation of signifi-
cance
c) Agency notification
d) Mitigation
a) Evaluation of sPecific
conduct ivi tY EeasureoenE s
and analYtical accePtabilitY
b) Continue routine oonitoring
naking aPProPriate uodifica-
E ions
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TIGURE 2
QUARTERIY PII EVAIUATION CHART
pIl
pll(5 pH)5
a) Collect 4 rePlicate
samples
b) Confiru pH ( 6
Continue routine moni-
toring
pII(6 pII)5
a) Measure semiannual
paraneEers in 4
rePlicate samPles
b) Conduct SEudent I sttttt lest on Gross
Alpha
ConEinue routine nonitoring
Significant Increase No sig:ificanc increase
a) Analyses of t'annual" radio-
nuc Iides
b) Evaluation of analYti-
cal accePtabilitY
c) Evaluation of signifi-
d)
e)
cance
Agency notification
Mi E ig aE ion
a) Evaluate analYt ical
accePtibilitY
b) Continue routine moniEoring
naking aPProPriate nodifica-
t ions
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MEMORANDUM
TO:
FROM:
Ronald F. Hochstein cc: David C. Frydenlund
i a.a Michelle R. Rehmann
Harold R. Roberts N/U</
DATE: APril 18,2001
SUBJECT: White Mesa Mill - Water Supply Wells
Over the past several years there has been a fair degree of confusion over the name, location and
physical characteristics of each of the water supply wells on the White Mesa site. I have attempted
io !ame, information from the files, supplemented with information from my own involvement with
the early construction of the facility, to clarify the specifics of each well.
The initial planning for construction of the White Mesa Mill based the fresh water needs on the
development of deep wells (+1800 feet) to supply the full needs ofthe facility. It was initially hoped
that eath of the wells would supply 300 - 500 gallons per minute (gpm) to the mill. This projection
was based on the results from the first well (the "Test Well") completed in early 1977. Although
this well never produced water at the 300 to 500 gllm rate, it was projected that larger diameter wells
would supply the necessary volume. Subsequent wells never produced consistently over 220 gpm
and proved to be high maintenance installations. Energy Fuels originally projected drilling 2 to 3
deef wells, but actually drilled 5, after the Test Well, in the attempt to supply the full needs of the
Mill. There were numerous occasions when the Mill would be shut down due to a lack of water. In
1984, Energy Fuels helped fund the construction of Recapture Dam and since then the majority of
water has been obtained from the Reservoir.
Following is a summary of the specifics of each well:
Test Well January 19,1977 6 inch 2,580,952 East**
322,667 North**
(east side of Mill yard)
2,580,065 East**
323,324 North**
(directty south of Water Tank)
l 800
No 1.September 26,1979 10 inch I 860
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Memorandum to Ronald F. Hochstein
April 18,2001
Page2
February 18, 1980 l0 inch I 885
No 3.July 28, 1980 8 inch 1 850
No.4 October 24,1980 8 inch*** 1820
(northeast comer of Mll property)
No.5 April 11, 1981 12 inch*** 1955 2,582,423 East
317,984 North
(southeast comer of Mill properly)
** Coordinates are approximate from topographic
map. All others from LanDesign, August 28, 2000
+** Casing size should be field verified
In the past, the current Well No. 5 was sometimes referred to as well No. 4,{ or Well No. 6' This
was because of issues with the Water Rights Applications, and early confusion with the Test Well
being designated as No. 1. The current nomenclature, as described above, is correct.
Well Driller's Logs are attached for all ofthe Water Supply Wells, with the proper designation added
to each of the documents.
lhn
Attachment
2,580,425 East
324,168 North
(north of Mill yard)
2,579,446East
323,051 North
(between Mll yard and Cell 1-t)
2,583,347 East
328,346 North
...t
f i.,io.
'-.\'; .a / rr::t :.i"'i:
r].'].r -?-4O
li',#
f+i;gff
i'ir...'.J....l.%
-'^t::.!:" 96
I
I
I
I
I
I
I
II
Water Well #5
. *, RL14ART3 .-::.,,,1 .)1 ..;'::ii1.;;*-r;-'h
Abbrcvlrllonr
lii''ffi
l3t-:s
l8-/o
- S^MPLE !-ETffiTerl
' \l'h-white,. Br_brown
R-rcd
Gy-gray
Bl-bluc
Gn-green
Yrr-ycllow'
B\-bllck :
Pp-purplc
Cbn<arbon
OBSS-oro trcnring tandttonc
t -sll9{;.oif-
-l^S -L{I tr,tto5i -flntaL
CG-conglonrcnto
SS--endstonc
)rlS-mudstono
ST-cilrsrono
F-6nc
U-rncdium
€-co.rac
N-nonc
S-sparrc
A-abundrnt
l-i-JArSt
xoto xo..#4.--''
Water Well #5
nr-venri
DESCITIPTION
l=9r,rrLrOr
--
Abbrcvlrrlonl
'' \Yh-whitc
" Bt-brorvn
R-rcd
Gy-gray
Bl-bluc
Gn_grecn
Yrr-ycllow'
Bl-bteck :.Pp-purplc
Cbn<arbon
CG-cenxlomcra3.
SS--eandttonc
)rtS-mudstoao
ST-riltstono
F-6ne
U-rncdium
€-come
N-none
S-rperrc
A-rbundrnt
OBSS-oro hcnring rendrtonc
EHTIS? FBELs,Water Well #5
roQi
lr No:
roprrtY:
Locafion:
llar Elav.:
robad BY:
DTPTH
f5o
GElr€sNJ?ED Lrnl ,lob
Abbrrvirtionr
Cgl--<onglomarall
Ar L -c r!ora
Sr-ranCrlonc
|'ls-mudrlonc
Sr-rilll,orrc
tr-lirae:lom
Sh-rhcia
Gr4rrrilr
r{-rclt
m-nedium
hd-hard
v-very
DESCRIPTIOX
acctSs r.lx : -- ilEalxs
IIttl
wh-whitc
br-brown
rC-rad
9y{r!ybl-blue
9n-9rl'nyw-ysllow
bi-bleck
PP;PurPlc
o?<tDl1?c
p!-pinl
,n-tsn
riy-ranCy
f -f ine
m-m:dium
(r-co3t3?
sP-sP!r!?
3-3Or:1e
a.-oSundont
l-light
lYi-rncdium
d-darl
w-rresi
nad-modcrara
39 -rlron93ly-r;lly
arL-arLortic
c-carbon
<bn -corbonsceoutpy-pyrite
lim-limonit:
hem-hemslits
CoCOr<olcrte
bent-b?nloni?e
or-oxidi:ed
unor-unotidi:ed
r bCC-crorr-beddad
bdd-bcdd:d
limy-limy
HOIE NO
i:19<tloa ShFt -. --" --
--'-
Test Well
IIEPORT OF \\'Et,I, DITII,I,EIT
STATT: OF UT.\II
Aegit..tl,n t,,.. 1\- 9 I9'q----
Cirlm lio.
I
T
CoDlGl .---
GliNE,R.\L sr,\T!illENT: Iieport of q.ell-driller is hereby msde snd filed u'ith the State Engineer. in acc-or'1ance
'rgith
the lau's o( Iitah'
(This rcFort sha, bc ll:l-:ll;.1,-rst"tu unx,nl..il,:"iilo'erl'. "ii*r",t;;;;;i;i';;"i "tr;",r;^-enr of the u'etl' Failrrre to (ile ruch
:iJi;,1'I."'i;,i;;i;' " misdemeanor')
(12) \\'r:l,L TIISTS:Drrwdo*n lr rhc di.i'nt' ln txt tb' rrtrr lrvcl lr lo-'
.rFl lrrlow .l.tlc l.t.l.
\r'rr r Dumo tcrt nrr't Y.. i'l lto 0 tt ro, uv -t'mt-i'l'--E-Ji-o.ggafd-^J
ticra:---I20.--rrl-/mln' -,,t.--jZ.Z--"-'-'tet dtrrdorn 'tt"-J12"--bourr
'
x-, t
_ _6_Q 1.-0_ _._ -, *. l" t
2.Q.0- 0--r x t r m ru S J{.. c o -.,
.. Sorf- ---' Wcr!
ili' r..,,o.. ..?7.. --. -..'---3-7- ----.: . * .-.2 2-flffi r "n"
(3, NATURE OF WORI( (check) i Nrrworr E
Rolrccncnt Wcll E lepcnlnr p Rcarlr Q Abrnrloo Q
Cordlartc llo' -.
-
B.ll.r t.!t trl./oln. rltb---..-.----.-.... tct drrrdoro rttrr'--.-_--'tourr
NOTE: Plrcc.n "X" tn thc rprcc or comblnrtlon of. rDrcct nctded to dollnrtr ttr mrictlrl
ii-."Llriiir""li -.t.ii.ir.iLiitii.i-ii i."b a.pth.int.nel. Undcr nEnARtrs E'k' rn'
dcrlrrblc not.. or ro o.a.ttiiii-oi-*.til inO -thc colo-r. 'ltG' D'tut'. Gtc" of E't'rirl 'n-;;;;i;;'i;-".cb a.ptu lntcwrl' Urc rdditlonrl rbmt lt ucedcd'
Do-oit. B Initutrtrt S !(unlclprl I stnttrt'r tr
Irrlsrtlon E . l{tsl.s D Ottcr E Tol ric[ E
(5) TYPE OF CONSTRUCTION (check):
Rorrrr H :. Dus tr Jctttd O
Cebh O. Drlvcr E Eorcd . E
(6) CASING SCHBDULB: lt..'d.d o wddrd o' '-6--
Dirm. (roo--0--1*1 6'l ? 5O'rct c'r'$--
tl rbrndonmcnt, dcrcrlbr mrttrlrl roil
(4) NATURE OF USE (check):
- Dlrn. trom----Jet to----JEl GrSr-
Dlrn' lroo-----Jel ta----Jx! Grt'-'
Nrw tr Rrtel tr Urod O
(?) PBRFORATIONS: Pcrror.udl Y. Q No F
Tlpc ol Pcrlorrtor o:td
Slrc ol gcrlorrtlonr
--
D € t lote t lo n r lroo---------Jc<! fD-------tdt
--DGr(otltlon.
t!------Jel
- --pcrtorrtlonr
froo tEt to-lFt
-.-..Dcr lorellonr lrom"-"---'-'-'---"-''lml to--------J6l
l.orfotltloor troo'-------Jet to--iet
(8) SCREEIiS: wotl rcren lnrtrllcdt Yq tr No R
M.nufrcttrNr'a Nrmr.---
Dlrm. ..,.......-. -...Slo! rlro.-... ... -.-...-'Sct lrom "---l! to--
fllnm.......-...........- Slot r1re...... '......--...Sct (rom "----tL to--
(9) CONSTRUCTIOIi:
lfas rrll 3ravcl petlsl? Ycr S l{o[ Slro of srrvrl:'
Grrvcl plrccd lroa '--'"""-"-'-- tet
ft.. r rut(.c. rcrl grovldcd? Yrl h
!q rhrt dcpth 1 .....-. | $ !------ r*t
rrit.rtit rraarl ln real!,,C<fnCf e tO'-'--"---
f)lrl rn7 rtr ata .onl ^tn unrr'rl'la satcr I Ycr tr No ln
Tygr of rrtct:- Dcatb ol 'tt't^-
ltrthod o( rerllng rtrrtr oll:'--
MATERIAL
BEII A RKS
Sha 1e
Dec .. ..6--..-.--.,17-6. csn'orcr6t.--J;l n-I9---- --.
EIetoi&lt{
NoO
0
l{otl rtrrlal
1','rr rurlncc <r:ing rrrcJ I
lvrr lt r"mcnIrl In rlucr?
Ycr
Ycr
( lo) \\"\'l'lilt LD\/I'll,s :
:;trric rr',r 3I7 .. ---let bclor ran'l rurtrro l)rtr I - I9 ---47-
oNod
nliog
l)rillcr's Stntcnront :
Ail'.i.n ni-.r'rr" . ......l'r( rt'rve ltt'l rurf'cc D'1f .--::.=:
t.oG uricr:tVriD:| (tl) rLo\"'lNG \\',I'lt,L:
(:.rnrroll.,l t r (th<tl Vrlrr O
C.p tl I'lo. tr No Coowl
J;es rrll lerl rro'rnd cgrnt t Ya
Dio
o
o
o
ulE oTllt:n 8lDf, roR Ai)ot;:cr:'lAI nF-!d^nxg
Water Well # I
r {t;(1J qx No e.r{ "., bv *r'o-E.n9.r.9y-.. illql; 11119]e1
*rtt ........i-:1.:i...... -.. lEt drredoun 'rtt' --'-"'l :''Q"" ''- b('rrrt
(I2) WBI,L TESTS:
W.! i DrrhD t8!\ mrrlc ? Ycl
yictrt:...... ((:1 ....gr1./nrtn
Ilrrw(lowrl lr thc r.llrtancc tn ldt tho Erl'r lcv'l l' lov''
crc,l lrtlow ciotlu lcvcl, p r-.^1,- I\1.,^l ^
,i",,"",1. ?9--..,-.. t-.."...-3-7- T. . ??-{iT
oirt vordr not nccdcd)
'
(S) NATTIRE OF WORK (check)r Ncwwcu 6
'h.oii.i--t Wcll Q Deponlng 0 Rcorlr E Abrnitou El
:,.'il. rbrndonnotrt. dcaerlbc rnrtrrhl end preodurol'
Tcmrrcrrturc o! rvrt t-............. Wrr r chcmlcrl rnalvrlr urdc ? No ff Ycr
NOTE: Phcc on "X" ln thc upacc or comblnotlon of cpaco nccdcd to dolgnrtr--thr metrrlr
ar cnrnlrrnnrrrn at nrer,io6 .ril'i""irii"i-ii"l,'i"ii ,ilprt -Lt.nit. finacr llnttAItl:s yr!r. r'1i'r"".ii,f",iif,-li ,-ri,t.iluii lniouritcr",t ln cuch dcpth.lnFnrl' Ilnrlcr IlELtAitl'tl n!x!
dairrhlo note6 o! to o""urriiiii'i?';;;;':;",i'tt:.';ii'tiii.--ti'i'-oiiuio'-otc'' ol antcrirl
iiii"i-iia'i.'i,i"ir- d.pib i"tei".t. Ucc odrlltlonnl rlrcct ll nccdcd'
Brll.r tclt srl./min' wlth
DEPTII
REtrT ARKS
slIla
78
8B
31
6?5
705
f38
75d
825
_&u
939
1038
rc6q
1
ulq
u5!.
1296
1840
-N-ffi"r.-
Work ctrdil .... I1.:1:L)':Y: "':.. " " " "''' ' '" "' .::::-::---------
(14) PUI\IP:
Dt^nu!.ctuler'r Nomc
Dcpth to punrp or brrwlca.......'-* ::-:--:]ji!--a
480-
101_
29
I
No [t Elzo ot ]ravd:"-"--
It& ln.-.".-----.--.""'-""'- lcct
Yoo ol No0
Wrr rurloct crrlng urod I yoONoO
Art6l.n prc:.ilrc -..-...'."""1ct lbovc tlnd rtrrlrcl
l'
I
I
Wrr lt ccmrntc{t ln Plnccl Ya O No O
F-
(10) WATIIR LEVELS:
"a,,o
,."., .. " *'*7-"""''"t-t brlow lrntl rurtecr
LOG TTECEIVED:I (11) ITLOWING $/ELL:
Controtlat br (cbxl) Vrlvc E
CrD O Plug O No cootrcl B
Der rrll tcrL rrounrt cralng t Ya tr
NoO
TISE OTIIEB Btr)E TOR ADDMIO}IAL F'E}IABKS
L,,*-,,.,Water Well #2
nEPOIIT OF r,"'lil.L Pltllil::trR Alprrrotro. ,xo'. ji9J'3''([]=ni'U "> -
I . STATE r)F UT.\II
4i z-
NATUITE OF WORK (chcck) I Nrr wrrr u
:rocnt \{cll Q . Dtcpcnlnr Q ltcarlr Q Abrndoo B
ffi,liI i''-,i; :;'",j "Jt-.-= {;
--
'Gd lcrdod lo dol:nrtr tbo nrtrrlrlNOTET Plrcr rn "X" ln thr'rprto or comblnrilcol- rp
or Gor^l,ln.tl.,n ot mrtc?[.|. l;;;;;,;;.i-i;.'.i. a'iirtliu-'l' u"a"t nE]lABNs orlr rn'
doirrrrrr notc. ' * *..,,llil]-Ji';I;; li-C'ir"-iir'Jilii;:-';;;;'--y*" ot artrrlrl ro'
il;il;A'i;-...rr arpiu -rni.ii;it'. Ur rddlrlorrl.rbot ll ocodrd'
Clrln No...
':'r 'i'j l'
':.r;;:
.i t.
, ,.' .r
TYPB OF CONSTRUCI'I.ON
o
o
PERFORATIONS:
of Dcrlorrtor orrd----
EtsLreicr
Tcrt Y/oll
(chech):
-{ir'd
Bond
Pcrlorrtr{l Yo Q NoE
o
o
o
o
NEMARKS
Red Green
Grey-Blue Green
Stone-Blue Gr
B1 Grey Sandstone
muds ton e
lue Green Limesto
ay Lenses
hlu tone - Broln
80% cla andstone
ed Cla
ands t,one
ed Cla -Red Sandstone
l.lhi te nds tone
a of Srcrlorrtlont..--.----.loeba by----tocbl
l----o.rtor.tloBr lrcE------J€t to-- lxt
I----r.r"retloor tre-----.-'Jet l'-.- eq|
r*---:.Dtrloetlonr lrco.--.-'. -.---.-.,6! t'''---tx]l
I--.D.rtorrtlonr lrco.-----..-..-...... te! to--:"-"--Jet
I-----oorto;edosr lrcu----J.tt w---.-_]'-J-t+
8) SCREENS: wcll rcr<n rnrrrue{t ya o No E
r Nrer
--
te
290
llodcl No.---
lu. ----..-..... .. .....Slot rJu-...-. -.-.....8.t ,.om .. -."'---' lL to"--'-
.------1.-.---..-..st"t r1a..........-..-.-...Sc! 1rcq.."...----."''L to"-
J) cottstRucrloN:':c. . r'i xo r--r erro "r "..,.r3-/.8-to3/4.r ..ll rr.t.t prclodl Ycr fl No O Slto ol Srvclr
r rurlete rerl grorlrtcdl Yer d NoO
rbr! da;rrbl.-.........10Q.---..--. .- "'A
rlrt urcd to .-t:.....-..CEIIl€Jlt.
i rnr rtretr conleln unurrblc rrlcrl yaOlloO
ol rrrllnr .t,.b oll:
tlrltb ro Durnl o. tp-1r....'..... ....... . ' tnl
\\',.11 I)rillcr'a Strtcmcnt:
This welt *'as drillcd undcr rny sul'crvirion, end tblc report lr truo
thc best of my knowlcdgc and bclic('
rurface crrlrt urrJ ! Ycr
It ..m.rrtnl ln plcrc ! Yo
o
o
No g(
llo O
t0) \vA'iliR LIiYEI-S:
lrrrl . 4 50 ...... t.:t Llor lerd rurlrcr
lrn grerure .... tet rta'r lrorl rurlra
G uECbirvHr):(ll) l;'Lo\\'rNG YiI]LL:
Conrrollcr! b7 (<bxL I Vrlrr O
CrD O f lu1 O t{o Cgulrol O
Ito -rt! Lr\ rround trrlol t Yr O
xcO
UsE Otlrra rlDt tOU ADDITIONAL Rr'uAatt
Netune QF USE (check):
F.'rr." O .i,:l:'Ioa-ut.t $? xunlclerl
Lroo 6 ":. rrrot'" a o0rrr
l| 'cnstNG scannulE: 6.-6"a o w.rd.d o
=r-f.0.--
Dr.m. tma o -r-t to'.-I250---r*t c'"o--25!-
t-:--- Dl.o] trco.---
-r.a.
b.-------Jal Gra''----
l---..-' Dlrm. lrce---'toL lo-'-"----Jei Cego-
.v d B.J<t o u&d o
(This reporr "l,olt r,e'iiiu,i .uiti'tii"..sintc Engin,:er within so dnys of tr:r tltc contlrlctiott or n
- )Ji.iiti-i"ti.titrt." u rnistlrmcarror')
tzl r,OC^rrION OF WIILL: I ,, . " . .' ". ..
lmr|trzlwDl,I,TES,IS:.,,lil;Ii::;,li.l|r,;1:i:.".:,t{tth.w.t.'ldv.|lt|ow.
I
r.-. .ED€11By...Eue1s...Nu.clear.r.-..Inc.----.- | ,v"" r,urn, rr:ht urrrtcr y. Af ";'; ; "", o, *u"-'"Engrgy EIl91q ""
lilt.#:HI+1F#;HE-l;i:'; l5lid"-;,;T -,,',-ris . ,*,0,.-::-..',,,'..1.__
.'"::'
V3 water well #3
Fom llFlM-llt0
1 cou.tr S an JUan. .-. "..1i.1,t]i'i.'^fi'r"
f*l r {oo ,".,. f:. J000 . r*t r,n- ... 8.E ' corn",
! o! s.ctton 28...... r.....57' t.^ '?2---flffir""'"
I out *'o.d, nor neJcdl
(3) NATLIRE OF WORI( (check) i Ncrwcrr il
I ;";.".-.tt rvcll E Dencnlns O llcpalr E Abaniton $
I tt .bnndo.-cnt. dcrcrlbr mrtcrltl rnd Droct{uro:'
(4) NATIJRE OF USD (check):
Domstlc E Indutrlrt fl liunlclprl E Stockrrtor Cl
Irrlcrtton 0 Mlulns O Othcr tl for Well O
=->(5) TYPII O!' CONSTITUCTION (check):
Bot.r, U Dua 0 Jctted tr
ceblc tr Drlvm tr Bortd tr
-
(O) CeSffqG SCIIIIDULE: tt.o.o.a o woaa il
". -g " DIrm' trou -.-..-Q-.."r*t to -1"?5O t-t angr"J17'-
Dtrm. trom...-...---.le! to....-.-.--Jdl Grc...---
[)lrm. lrom..-----...tat to----.----.--fFt Gra'--
(13) wttl.l LOG:
bou rl
NE}I A RKS
wn Shale
Iletl Shnler
Bqd.--M,rrrl s't.one
ed & B}rte Shele -
-&Uhit e $.ande!a
EIlr
57
t
I
I
I
I
I
I
I
I
I
I
I
I
DEPTU
-:-
to
Ncrv O ttoJcct tl Urod 0
;:-----=- -
(Z) fBnfORATIONSi P*lorrtedl Y. E xo &
fygc of D.rtor.lor urql '------'--
Slu of gcrlorrtlonr....--'--'-""-'-"'lncba by----lacbcr
-..-....,...,.---.gcrtor.tlonl tloE-""'--"'--'-'-'Jet to-'-----J'l.l
.--.........-..--...pcr(orrtlont !rcu--" "---""".'"'- trt to ---'--'-'ot
....-...,. ...-.-...9crforrtlonr lroD--"-"-"'-"'-'-'-tst to'--lrt
-..--.-.---..pcrlorattont
lru--'-""'--'-'-"-'-lRt to-------'G't
.- .-..----.pcr(orrllon. troE--"'--"'-"--Jmt to"'------"-lct
--r_-
(8) SCRIiENS: wcll rcren lnrtallcrtl Yo .g No S
ldrnulrcturcr'r l'leoc "-'-"'--'
fyD.... -..---..-.. llodel No"'-"
Dlrm. .. -.....-..... .Slot rlr" "',. .''- ""'Set lrom .''-"'--lL to--.-
Dlom..............'....... Slot rlec . ."-""" '-" Sct lrom ""-'--"" ft' to"--
(9) CONSTRUCTION:
Wor wcll Srrvcl DrcLql I Ycr fl No il St" o! grrvcl:" '-'.-.-.--
Grrvcl glrccd trom "''"'" ''" " l4t to ''"""--"""-"""-""'- t6t
tvrr r lrrfre r rcrl pmvl,lcrt 1 Yq' X No O
To wbrr ,lcptb ? ... ..1 2 50 ."......-.-....-... r*t
rro,".r.t urcJ lo rcol: ..0gHpnt"
Dld rny .tr.tr cohtrltr unuaol'lc *'ttcr? Yca O N; 16
Tn'G ol s.tcr: ....." " " -""'
Mcthod ol .r.llng'"ttttt ofl:work rtrrt<l :Iung ..?{
(14) I'UNI':
Dlrnur.ctur"a'r N.arr.
\{rr rurflcc crrln( urtrl !
\r.,rr lt ccrucrrtt'{ ln Plucol
Ytr O
XoO
No ll
Notr
;';'";i"i,riiii:;.';i ;;t";f.i;'-";;;;"tll.i-i',i-li"t, ii"pih.tntc',r1. unrtcr REt'lA'Itr(s to^k' 'n'datrablc notc. or to o""u.ruijiJ",i?'i"-.iji' i-.-o'ttti- c"to-i.-.1r".- a.tur., "tc'. ol mrteriel cn'
ii"rit".--a ii-"."ir-aoptb i"r"tr.t. Uue rddltlorrrl rbcc! l! nccdql'
DcDth to DunrP ot lPwlcl
:::l :^ t%'l
I,E\TI!][,S:\\'oll I)rillcr's Statr:mcttt :I
I
I
tet lrclow lund rurlrcr
(tl) FLO\YING WELL:
Controllql l,Y (cbetl Vrlvr O
Cuo tl Plus O No Control O
f)r* wclt lerlr rroua'l culog t Yo O
xo !0 r.icense N ".6.?.{.,..
( g.Q }.9- ). u^ t" . --- ----- --" Au g, u $ -i" -L=-- ""-' t o
usE OTrtElt slDE FOn ADnlTlclNAt' nEltAnKS
f ;;;r*-,,",
water well #4
.,r,it,l
llls I '11'ur ltllil'tltl0l")
1,rrt.tl..'tltl:;tittltg:illtl,ll5ltt:ltlt..1rrvr.,
I .;.-.- -' :;""'--.--.--I ,r ,;i,,:"l].tl1 otr )vrrl'::
.-'-"';"
-
.l '
t)CA'l'lON Ol" WIi:Ll': I rrcr JrrwJ.,wx rrrdr r.;u,r
iutf ,.luarf .... (jrouurt wct.r Ilucirr '-' . ' | ,r.,,.. ,,,. srl'''t'rirr' rvltlt
I trrmtffi,.;o-*fi;-x -;ffi1
I i_,*ii-r;;mlil):ir)n*ii;;ffiiffi}iJx "#irii'ri::ii1x., .,.. ,., t ,r"ril:,ti:],,lii:t.it,".iili:iiil;llil ",1.:'l,i,,tlll1,i'ii.xi'ii'.i1.'i;u.
l,:li * ,. ,r;: l;.sj'j:.|,".,,ru I ttlt \VIi:1,1, l.o(;: '- { 'i)i""'iGr'l '"11.11; -.i," ,tr:,0 ,.*!
I ;;ffi;,.o,i-Y:: t'::::lj
r *l' ,-n: --*"t-1:'91--::-' --g
t 5y ffi':ffiN's'l'Ruc'l'loN (cneclil
c
l r l{l}#
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Attachment L
LANDesign August 28, 2000 SurveY
( Adjusted to Local Elevation Datum )
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459
517
523
558
16
17
18
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
318959.04
322140.21
320772.64
322415.34
325672.14
-425671.85
/zzag+s.aa
324491.93
,/324491.73
325121.59
J325121.34
J324168.39
320977.29
-,320976.89
320863.28
/.20862.99
320988.62
,/320988.26
320991.42
'Azoggt.tz
321115.77
,,821115.39
321664.28
421663.86
321831.35
"/321831.07
322003.12
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323051.11
3231 13.81
-323113.59
z \,r' t rt^'4"{'
2581030.27
-2581030.27
2580890.44
lsaoaso.ss
2580872.88
-2580872.64
2580905.88
12580905.96
2580916.23
"-2580916.1 1
2580918.82
12580918.88
2580874.18
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2580859.23
- 2580859.24
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2577189.09
<577J 8s.03
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P{ 6 /qVnr.n
2578773.28 5584.66 CONTROL POINT
2579468.12 5623.15 CONTROL POINT
2576214.19 5608.22 CONTROL POINT
257s5s0.24 5623.78 CONTROL POINT
2579330.34 75645.76r. yp'GROUND
-as7s3so.4z r'5647.03 , 7 uorutron well r \\
/zsass+t.s4 /s071.3s wATER wELL 4
2581423.30 "6OSS.+41 , - GROUND r,
,2581423.33 -,5654.962 il MONITOR WELL tg tr
2580133.00,,/5656.24'{,, GROUND
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./2580424.68 5650.30t/ WATER WELL 2
.,5619.93\.u GROUND
iuzt;o/ X TEMPoRARv wru +-a'{\
r,5617.5Q .,',
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,r/561 9.87 r, -
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MONTTOR WELL 4 t
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,sozz.zg, 4
- 5636.11, .,'
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- 5638.75 1g
--5640.70
3629.71
,'5631.37
-5632.78
GROUND
TEMPORARY WELL 4-1 +
GROUND
TEMPoRARY WELL 4-7 f\"
GROUND
TEMPORARY WELL 4-3 IiT
GROUND
TEMPORARY WELL 4-e -t
GROUND tr
TEMPORARY WELL 4-5 I \
WATER WELL 3
cRouND 'Q ,-o.\ ,:
MONITOR WELL 10-2 1 '
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LANDesign August 28,2000 SurveY
( Adjusted to Local Elevation Datum )
45 323107 .20 2577185.50 - 5631 .42 GROUND tiC*"t coot'
46 J23106.77 -?577.185.65 -5632.82 MONITOR WELL 10-1 'l
-
t\t\
r(li
47 322120.44 2576575.78
48 *322120.47 2576f76.09
49 322115.09 2576580.78
50 322114.89 Y576580.73
GROUND
MONITOR WELL 9-2
GROUND
MONITOR WELL 9-1
- 5618.38
-5619.66
-5618.41
J619.88
58
59
-\\
51
52
54
55
56
57
60
61
63
64
65
66
67
68
69
72
73
74
75
76
77
321969.75
-321969.45
321 335.1 0
321050.98
320245.73
12024s.47
319157.02
-319156.70
I
319296.61
-_3'19296.27
320519.52
320519.12
320683.56
-320683.29
320681.73
319821 .19
-319820.94
318453.61
J'18453.44
317341.02
- 317340.58
316871.92
-316871.69
315491.01
-- 315490.81
2576210.03
--2576209.93ll
2578052.36
2579124.47
2578798.1 0
-2578798.10r)
2578142.45
-2578142.39\)
2577451.64
--2F77\451-45
2577478.63
1p7K78.42
2s76665.20
-2576665.06\l
2576654.87
2576661.45
--1576661.6s
2578892.11
_1578pe2.21
2576418.05
-4576{17.8e
2574794.93
-.1s74Te4.e0
2576169.95
.-a576,169.80
l ees-4 [< )1999-1 \J
GROUND
MONITOR WELL 11
GROUND
MONITOR WELL 14
-5611 .23r ,.t GROUND
-s613.14)f uoNlroR wELL2 +1
5612.52
5613.18
- 5608.51. -, -
-soro.ad X
- s5e8.1X,-p
-s598.14/'4
70
71 i113 3) X
GROUND
MoNtroR WELL 17 +i
-5599.18': vz GROUND
-- ssee.el /n MON|TOR WELL 1s +
-{609.18r .r GROUND
-5608.e7/F n/loNlroR WELL s +€'-'-'--
- 5608.6N ^t- GROUND
-s60e.15/
/t MONlroR WELL 12 t
5607.89 Movement Moument 324
t 5585.531s GROUND
-ss86.72[ T MONITOR WELL 16 -
- 5552.88.. rl.z GROUND
-sss4.B{ F MoNtroR wELL 3 t
- 5560.54s.e. GROUND
-ss62.3y'
n\ MoNtroR wELL 21 U
- 5539.11- -t- GROUND
- s540.60/ 7( uorurroR WELL 2o +
I
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I Page 2 06120120019:03 AM
t
I
LANDesign August 28,2000 SurueY
( Adjusted to Local Elevation Datum )
point No. Northing 00 Easting (X) Elevation (Z) Description
-2580981.05
r 5516.08.. rr, GROUND ,
-ss17.47 /K rt,torurroR wELL zz *78
79
313968.87
-313968.74
-417984.21
323700.20
324139.62
324226.52
325394.68
319972.68
318980.24
319037.99
319311.68
320095.83
320771.26
31 9148.41
319345.61
318895.65
319004.06
320448.27
320103.24
319348.60
320407.88
321335.34
322096.90
320595.14' 320594.77
320344.09
- 320343.83
320404.65
320477.53
320479.45
319353.88
321542.51
321510.94
321267.15
321258.88
321344.24
322095.83
322122.05
319008.34
2580980.87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
-2582422.92
2577927.29
2577358.60
2s78536.75
2577857.34
2576120.10
2574710.18
2578787.27
2577402.54
2579494.23
2576221.47
2577339.57
2577230.88
2578685.49
2578958.93
2577840.87
2579548.90
2s77465.23
2578074.90
2578568.19
2s79082.78
2580936.49
-2580936.51
2580894.17
-2r580P93.58
2578088.47
2577645.60
2577634.29
2577472.34
2577283.95
2577394.83
2578377.73
2578406.93
2578s66.48
2578065.20
2578066.87
2578876.42
/ssta.la
5637.89
5623.42
5646.63
5643.11
5603.72
5574.66
5586.74
5572.39
5607.54
5607.1 4
5565.96
5570.41
5584.66
5581.36
5608.22
5607.48
5598.77
5609.21
5611.79
5617.84
5609.75
5607.63
5607.84
5598.45
5612.40
5612.64
5612.72
5610.26
5611.89
5618.62
5620.34
5584.90
WATER WELL 5
WM 42A
WM 42
WM 434
WM 43
WM 224
wM 22
SE CELL 4A
SW CELL 4A
R.J. #66
R.J. #133
SW 175'RP-S
SW 175'RP-W
SE 175'RP-S
SE 175'RP-E
NW CELL 4A
NE CELL 44
LEAK DETECTION CELL #4
LEAK DETECTION CELL #3
LEAK DETECTION CELL #2
LEAK DETECTION CELL #1
SLIME DRAIN CELL #3
CELL #3 CONTROL #1
CELL #3 CONTROL #2
SLIME DRAIN CELL #4
CONTROL POINT CELL #2 WEST
CONTROL POINT FLANGE IN PVC
CONTROL POINT NW COR SPILLWAY
SPILLWAY CREST
SLIME DRAIN CELL #2
GROUND ROD SOUTH CELL #1
AERIAL PANEL S. CELL #1
AERIAL PANEL SE COR CELL #4
I
I
I
I
1 004
1 005
1 000
1 001
1002
1 003
1 006
1 007
1 008
1 009
1010
101 1
1012
1013
1014
1015
1016
1017
1018
1019
-5612.3O- -r- GROUND
-iari.+e/ r TEMPoRARY wELL 4-4 +
-5607.33\ , - GROUND
-s6oB.7B>
X renlpoRARy wELL o-u 'h"
Page 3 06120120019:03 AM
NW
NE
SE
SW
I
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I
I
t
I
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I
I
I
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I
I
I
t
I
Test Well
Jones Well
Jet Pump
Former Leach Field (near office)
Approximate Coordinates
Misc. Features - White Mesa Mill Site
Easting Northing (all coordinates are approximate )
2580941 gzzal2 r'
2581350 gtagso '''
2581250 329460 v"
Old Leach Field ({Ual6 house}
NW 2\s80/68 3212s0'
NE 2580789 322290-
sE 2580789 322234-sw 2f8q768 tzzTsal
Current Leach Field (east of Mill yard) ./NW 1581?25 324517-,
NE 2581325 322517 /
sE zblls2s szzlst /
SW 2i,81?25 szzTsty'
NW
NE
SE
SW
Sedimentation Pond
NW
NE
A
B
SE
SW
2F8\270
1580160
2580360
2580270\)
322?75/r'
322275
szz]t os r.'
322165 v
2581050 szzgso/)saltzs v)gso /
2581125 322820 v/
2581050 322820'\)t
?579!20 3226251/
z\tdqas sz)azs/
2579465 322380t/
2579555 322335V
2579s55 tzzrss /
257g42O ZZZ'ISS '/r'l )
Abandoned Monitor Wells, Bore Holes, and Angle Holes
Feature Easting Northing Elevation ( all coordinates are approximate )
MW-l 3 2577.666 319s58
MW-6-1 zlstdosz 32or53o
MW-6-2 2579052 320530
MW-7-1 2578233 320862
MW-7-2 2578233 320862
MW-8-1 2577346 320876
MW-8-2 2577346 320876
D&M3 2580085 322725
D&M9 2581372 327370
GH-94-1 2576490 320510
GH-94-2A 2577310 320340
GH-94-3 2s77565 320030
GH-94-4 2577420 319610\))
ssTo/
55881
ssaar'
5588 "/
5588/
5590r'
5590.,
sesq.s/.
567s.3/
55s7 /
5s83/
55/9 v
sslz '/
TI
t
I
I
I Attachment L
I
I
I
t
I
I
T
I
t
I
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I
I
I
T) pl,*
-t----
+
1I
t
I
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I
I
I
I
I
I
18
21
LANDesign August 28,2000 SurveY
( Adjusted to Local Elevation Datum )
point No. Northing cD Easting (X) Elevation (Z) Description
459 318959.04 2578773.28
517 322140.21 2579468.12
523 320772.64 2576214.19
5s8 322415.34 2s79s90.24
16 325672.14 2579330.34
17 325671.85 2579330.42
5584.66 CONTROL POINT
5623.15 CONTROL POINT
5608.22 CONTROL POINT
5623.78 CONTROL POINT
5645.76 GROUND
5647.63 MONITOR WELL 1
5671.39 WATER WELL 4
5653.48 GROUND
5654.96 MONITOR WELL 19
5656.24 GROUND
5657.51 MONITOR WELL 18
5650.30 WATER WELL 2
5619.93 GROUND
5621.4O TEMPORARY WELL 4-8
5617.56 GROUND
5618.58 TEMPORARY WELL 4.1
5619.87 GROUND
5621.07 TEMPORARY WELL 4-7
5620.77 GROUND
5622.33 MONITOR WELL 4
5622.76 GROUND
5624.72 TEMPORARY WELL 4-2
5631.21 GROUND
5632.23 TEMPORARY WELL 4.3
5636.11 GROUND
5637.59 TEMPORARY WELL 4-9
5638.75 GROUND
5640.70 TEMPORARY WELL 4.5
5629.71 WATER WELL 3
5631.37 GROUND
s632.78 MONITOR WELL 10-2
328345.68 2583347.34
324491.93 2581423.30
22 324491.73 2s81423.33
23 325121.59 2580133.00
325121.34 2580133.04
25 324168.39 2580424.68
I
I
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t
I
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I
26 320977.29
27 320976.89
2581030.27
2s81030.27
28 320863.28 2580890.44
29 320862.99 2580890.59
30 320988.62 2580872.88
31 320988.26 2580872.64
32 320991.42 2580905.88
33 320991.17 2580905.96
34 321115.77 2580916.23
35 321115.39 2580916.11
36 321664.28 2580918.82
37 321663.86 2580918.88
38 321 831.35 2580874.1 8
39 321831.O7 2580874.19
40 322003.12 2580859.23
41 322002.88 2580859.24
42 323051.11 2579445-75
43 323113.81 2577189.09
44 323113.59 2577189.03
Page 1 0O120120019:03 AM
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I
45
46
47
48
ih r\r17v -)-''-'LANDesign August 28,2000 SurveY
( Adjusted to Local Elevation Datum )
57 32024s.47
GROUND
MONITOR WELL 10.1
GROUND
MONITOR WELL 9-2
GROUND
MONITOR WELL 9-1
GROUND
MONITOR WELL 2
1 999-4
1 999-1
GROUND
MONITOR WELL 11
GROUND
MONITOR WELL 14
GROUND
MONITOR WELL 15
GROUND
MONITOR WELL 5
GROUND
MONITOR WELL 12
Movement Moument 324
GROUND
MONITOR WELL 16
GROUND
MONITOR WELL 17
GROUND
MONITOR WELL 3
GROUND
MONITOR WELL 21
GROUND
MONITOR WELL 20
49 322115.09
50 322114.89
323107.20
323106.77
322120.44
322120.47
321969.75
321969.45
319296.61
319296.27
320683.56
320683.29
320681.73
319821 .19
319820.94
318453.61
318453.44
317341.02
317340.58
316871 .92
316871 .69
2577185.50
2577185.65
2576575.78
2576576.09
2576580.78
2576580.73
2576210.03
2s76209.93
2578052.36
2579124.47
2578798.10
2578798.10
2s78142.45
2578142.39
2577451.64
2s77451.45
2577478.63
2577478.42
2576665.20
2576665.06
2576654.87
2576661.45
2576661.65
2578892.11
2578892.21
2576418.0s
2576417.89
2574794.93
2574794.90
2576169.95
2576'169.80
5631.42
5632.82
5618.38
5619.66
5618.41
5619.88
5611.23
5613.14
5612.52
5613.18
5608.51
5610.80
s598.13
5598.14
5599.18
5599.91
5609.18
5608.97
5608.60
5609.15
5607.89
5585.53
5586.72
5573.81
5575.09
s552.88
5554.83
5560.52
5562.35
5539.11
s540.60
51
52
54 321 335.10
55 321050.98
s6 320245.73
58 319157.02
59 319156.70I
I
I
t
t
I
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I
I
I
T
60
61
63 320519.52
64 320519.12
65
66
67
68
69
70
71
72
73
74
75
76 315491 .01
77 315490.81
Page 2 OOl20120019:03 AM
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LANDesign August 28, 2000 SurveY
( Adjusted to Local Elevation Datum )
Du1)ia'
I
I
96
97
98
99
100
101
I
I
78
79
80
88
89
90
91
92
93
94
95
102
103
1 000
1 001
1 002
1 003
1 004
1 005
1 006
1 007
1 008
1 009
1010
101 1
1012
1013
1014
1015
1016
1017
1018
1019
313968.87
313968.74
317984.21
323700.20
324139.62
324226.52
325394.68
319972.68
318980.24
319037.99
319311.68
320095.83
320771.26
319148.41
319345.61
318895.65
319004.06
320448.27
320103.24
319348.60
320407.88
321335.34
322096.90
320595.1 4
320594.77
320344.09
320343.83
320404.65
320477.53
320479.45
319353.88
321542.51
321510.94
321267.15
321258.88
321344.24
322095.83
322122.05
319008.34
2580980.87
2580981.05
2582422.92
2s77927.29
2577358.60
2578536.75
2577857.34
2576120.10
2574710.18
2578787.27
2577402.s4
2579494.23
2576221.47
2577339.57
2s77230.88
2578685.49
2s78958.93
2s77840.87
2579548.90
2s77465.23
2578074.90
2578568.1 I
2575082.78
2580936.49
2s80936.51
2580894.17
2580893.58
2578088.47
2577645.60
2577634.29
2577472.34
2577283.95
2577394.83
2578377.73
2578406.93
2578566.48
2578065.20
2578066.87
2578876.42
5516.08
5517.47
5578.78
5637.89
5623.42
5646.63
5643.1't
s603.72
5574.66
5586.74
5572.39
5607.54
5607.14
5565.96
5570.41
5584.66
5581.36
5608.22
5607.48
5598.77
5609.21
5611.79
5617.84
5612.30
5613.49
5607.33
5608.78
5609.75
5607.63
5607.84
5598.45
5612.40
5612.64
5612.72
5610.26
5611.89
5618.62
5620.34
5584.90
GROUND
MONITOR WELL 22
WATER WELL 5
WM 42A
WM 42
WM 43A
WM 43
wM 224
wM 22
SE CELL 4A
SW CELL 4A
R.J. #66
R.J. #133
SW 175'RP-S
SW.I75'RP-W
SE 175'RP.S
SE 175'RP-E
NW CELL 4A
NE CELL 4A
LEAK DETECTION CELL #4
LEAK DETECTION CELL #3
LEAK DETECTION CELL #2
LEAK DETECTION CELL #1
GROUND
TEMPORARY WELL 4.4
GROUND
TEMPORARY WELL 4-6
SLIME DRAIN CELL #3
CELL #3 CONTROL #1
CELL #3 CONTROL #2
SLIME DRAIN CELL #4
CONTROL POINT CELL #2 WEST
CONTROL POINT FLANGE IN PVC
CONTROL POINT NW COR SPILLWAY
SPILLWAY CREST
SLIME DRAIN CELL #2
GROUND ROD SOUTH CELL #1
AERIAL PANEL S. CELL #1
AERIAL PANEL SE COR CELL #4I
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Page 3 0O120120019:03 AM
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t
2580270
Old Leach Field (scale house)
NW 2580768
NE 2580789
sE 2580789
2580768
Current Leach Field (east of Mill yard)
NW 2581225
NE 2581325
sE 2581325
sw 2581225
Approximate Coordinates
Misc. Features - White Mesa Mill Site
Northing (all coordinates are approximate )
322672
31 8950
329460
322275
322275
322165
322165
322290
322290
322234
322234
322517
322517
322357
322357
322950
322950
322820
322820
322625
322625
322380
322335
322155
322155
I
FormerLeachFie,r,^""';#l?13
sE 2580360
Tesl Well
Jones Well
Jet Pump
Sedimentation Pond
NW
NE
A
B
SE
SW
2580941
2581 350
2581250
258 1 050
2581125
2581125
258 1 050
2579420
2579465
2579465
2579555
2579555
2579420
NW
NE
SE
SW
I
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Abandoned Monitor Wells, Bore Holes, and Angle Holes
Feature Easting Northing Elevation ( all coordinates are approximate )
MW-13 2577666
MW-6-1 2579052
MW-6-2 2579052
MW-7-1 2578233
MW-7-2 2578233
MW-8-1 2577346
MW-8-2 2577346
D&M 3 2580085
D&M 9 2s81372
GH-94-1 2576490
GH-94-2A 2577310
GH-94-3 2577565
GH-94-4 2577420
31 9558
320530
320530
320862
320862
32087A
320876
322725
327370
32051 0
320340
320030
31 961 0
5570
5588
5588
5588
5588
5590
5590
5634.3
5679.3
5597
5583
5579
5572
Attachment M
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SCALE IN FEET
FXPI ANATION
5580
5570
5560
5550
5540
55J0
5520
551&
5500
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5522
PERCHED MONITORING WELL
SHOWING WATER LEVEL IN FEET (AMSL)
IEMPORARY PERCHED MONITORING WELL
SHO',VING WATER LEVEL lN FEET (AMSL)
----5585 WATER LEVEL CONTOUR, DASHED WHERE UNCERTAIN
\\i...-- 5590
,l//.) 5450
WATER LEVEL CONTOUR MAP
DECEMBER, 2OOO
WHITE MESA URANIUM MILL SITE
Approved
SS
D ate
6120101
Revised Date Referen ce:
71800020
FIG.
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SCALE IN FEET
FXPLANATION
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SHOWNG WA'TER TEVEL IN FEET (AMSL)
.---5585 WATER LEVEL CONTOUR, DASHED WHERE UNCERTAIN
-1.,/- - -----, _-_
WATER LEVEL CONTOUR MAP
MARCH, 2OO1
WHITE MESA URANIUM MILL SITE
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1ETPORARY PERCTIED UO{ITORING TELL
STIOTUNG PEROIED SATURATED IHICKNESS IN FEET
IFZI'
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SATURATED THIGKNESS OF PERCHED ZONE
DECEMBER, 2OOO
WHITE MESA URANIUM MILL SITE
Approved
SS
Dote
8120101
Revised Dote Referen ce:
71800023
FIG.
1
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PROPERTY
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WHITE MESA URANIUM MILL SITE
Approved
SS
Dote
6120101
Revised Dote Reference:
71800024 1
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WHITE MESA URANIUM MILL SITE
Approved
SS
Dote
6t20101
Revised Dote Referen ce:
71800022
FIG.
1
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