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Characterization Well R-22
Ctnnpletion Report
li·d Ball
.'141rli l:n·rt•fl
f>atricA Lrm~min•
Oa••iJ limiman
William SltJilt'
IJm•id IArs.Hm
1\dth (jrt'4'flt'
Nt•d Clayton Stt'\'t' McLin
-A. • Los A11amos NATIONAL LABORATORY
los Alamos NM 87545
I.A·I JJI~J.t.f-"1
r I I ~ . ,.' I ., I .
I i
l-~~o~· J
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• ..
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Produced by the Groundwater Investigations Focus Area
los Alamos National laboratory. an affirmative action/equal opportunity employer, Is operated by the
University ot California tor the United States Department of Energy under c;ontract W-7405-ENG-36.
This report was prepared as an account of wot14. sponsored by an agency ol the United Statea GoYianw•...._
Neither the Regents of the University of California, the Uni1ed States Government nor any agency thereo(,
nor any of their employees n.ake any warranty, express or implied, or assume any legal liability 01'
responsibility tor the accuracy, completeness. or usefulness of any lnfonnatlon. appermue., procllct. Of
process disclosed, or represent that its use would not infringe privately owned righls. Reference herein to
any specific commercial product, process, or service by tlltde name. tradema~ manufacturer, 01' ~
does not necessarily constitute or imply its endorsement. recommendation, or favoring by the Regents d
the University of California, the United States Government. or any agency thereof.
los Alamos National laboratory strongly supports I!!Cademic freedom and a researchel's rtght 110 publah; •
an Institution, however, the laboratory does not endorse tha viewpoint of a publication 01' guarantee Is
technical corr&etness. By acceptance of this article, the pllblisher recognizes that the U.S. GowHnment
retains a nonexclusive, royalty-free hcense to publish cr reproduce the published fonn of this oorltribulion.
or to allow others to do so. for U.S. Government purposes. Los Alamos National laboratory raquests !hal
the publisher identify this article as wot14. pertormed unoor the auspices of the U.S. Oepanment of EilEif'QY.
l Aall OF C()tff£NT8
'0 lffTftOOUC'OOH ...... . .. ,. ...............................................
............ 1
P~.-1 t fj.CTI ACT1VIftll .,. .............................................. '
1..0 PRI,ARATION ..... . ................................................................ '
~ t A.clm•\lfitl atrvu Pro,,,., 'ttton 1
2
_. ;, 51t• Pta;c>n• llhon
J.O ORUtNO .......................................................................................................................
............... 2
l 1 Ph•M I OnJltnQ
.. 4
.. 4
l2 Ptu..,. II Ort1ttr~
•·o WEU OIStGH AHO COHSTAUCTlON .............. .. . ........................................................... 5
.. 1 Wotl O.JAQ"' .. 5 ... 6 . ... 6 .... 8
" ~ Wftl C..on•tnJCb~
4 2 , s, .... lll.tallalton .
•l 2 2 Annulur FIll Plaumont
6.0 W'E.U OEVEL.OPMENT ......................................................................................................
.............. 8
1..0 SURFACE COMPL£T10N AND SIT£ RESTORATJON ................................................................ 10
7.0 HYDROLOGIC TESTtHO ...........................................................................................................
.... 10
1.0 WESTBAY"' INSTRUMENTATION ............................................................................................ -. 10
t.O GEOD£TIC SURVEY Of COMPLETED WELL ............................................................................. 14
PART 1: ANALVSfS AND INTERPRETATJONS ..................................................................................... 14
10.0 OEOLOGY ...............................................................................................................
....................... 14
10.1 Ash Aowl of the T5hirege Member of the Bandelier Tuff({}- to 128·Ft Depth) ................ 19
10.2 A&h Aowa and Gua,e Pumice Bed of the OtOWI Member or the Bandelier Tuff (128- to
179·FI Depth and 179· to 190-Ft Depth) ............................................................................ 19
10.3 CcnOti del Rio Surtace Soil. lavas. C:inder Units, lnter11ow Units. and Subflow Deposits
of lhe Cenor. del Rio VQicanic Fteld (190· to 1173-Ft Depth) ............................................. 21
10.3 1 Cerros del Rio Alkalic to Tholeiitic Lavas (190· to 480-Ft Depth) ......................... 21
10.3.2 Cenos dol ~to Ba&altic lavas and Cmder (480- to 580-Ft Depth) above a
Sediment and Sot! Horizon (580- to 60o-Ft Depth) ............................................... 21
10.3.3 Cerros del Rio Tholeiitic/Oacitic Bimodal Volcanic Series (600- to 78().Ft
Depth) .....................................................................................................
.............. 24
10.3.4 Corros del Rio Massive Tholeiitic Flow Series (780· to 1163-Ft Depth) and
Flow-Base Sedtments (1163· to 1173-Ft Oepthj ................................................. 26
10 • Upper Puye F anglomerates (1113· to 1338-Ft Depth) ....................................................... 27
10.5 C1ay-Aite1ed Older Basalt (1338· to 1406·Ft Depth) ........................................................... 28
10.6 Lower Faoglomerates, Tentativelv Assigned to the Puye Formation (1406- to TO at
1 -'89-Ft Depth) ..................................................................................................
................ 28
11.0 BOREHOLE GEOPHYSICS ..........................................................................................................
. 29
12.0 HYOROLOOV .........................................................................................................
........................ 30
12.1 Saturat~ Zones ................................................................................................
........... 30
t 2 1 . 1 Groundwater Occurrence ................................................................................ 30
ER200 r-r»eo iii
January 2002
'
Chllr,c.•r•n.r.~tWIDil Wj•tl R·!/3 CNnni#-<:tt• n~·~r~ - ... ·----···-.-......... ___ , __ ...... -" .. -·-·-·-~·-:::: .. ·._r ...... ·~···" ..
12.1.2 Grourld:w"~' MovM~~
12 1 . .? , V~J Hf!n~ ()l'fi-l!iif)•.Jf•<-"'•
, 2 .1.2 2 Hyll11UJIIC; f'H~t1Jflt
13.0 OEOCHEMI&TAV Of SAMPUtO W.AlfRI ................................ --........ .__,_,_, ___ ~·--···~ J1 13.1 Methodt .................. ' .. .. » 13.2 Geochemistry of A0(110tl41 Aqothtf , .. C<!ll~fO .. rj<JI f{tlj r ..... wl :II 13.3 Oocurrence &nd Sourc. of A.cot001t oc R-n liSI
14.0 SUMMARY OF HYDAOGEOLOQ.JC rEA lURES 1n SCREEH£0 fHTERVALS IN ~·D -·---· _,
15.0 IMPLJCATIONS OF R-22 FOR CONCEPTUAL GE.OLC.OV, HYDftOLOGY,IMO GEOCHEMISTRY ...................................................................................... ···--·-·-··-~-~--· •
16.0 ACKNOWLEDOMENTS .......................................................................... ~--·-~--·-h· -~ Jl
17.0 REFJ:RENC£8 ............................................................................................. ~ .. ··-·· .. ------ •
Appendhtn
Appendix A
Appendix B
Appendix c Appendix D
Appendix E
Appendix F
Appendix G
UatofFJguree
Figure 4.2-1
Figure 5.0-1
Figure 10.0-1
Figure 10.0-2
Figure 1 0.0-3
Figure 10.0-4
Diagram of Site Activities Aelotcd to Progre$t~
Acttvitlos Planned 1or A-22 Compared writr Wo~ Pe110fTTIOO
lithologic Log
WeG'lbay's 'I'M MP 55 Well Components lnstall~l'd rn A-22
Descriptions of Geologic Samples
Characterization Well A-22: Geophysi~all.o!i)ging Aepot1 (on CO. back CCMW)
Montage of Geophysical Logs rn A-2?. Borehole at Total Oepttl (on CO, beck~)
As-built well configuration diagram, well R-22 ........................................................ - ...... 7
Results of final development by pumpin-.; for screen 14 ............................................... -·-·· 9 Map showing the location of drill hole R-22 relative to the Laboratory bounde1y, lhe town of White Rock, and the tholeiitic volcanic center west of While Roclt .................... 15
Cross-section through A·22 corresponding to the line-of-&eetion shown In Figure 10.0-1 .............................................................................................................................. ,, The stratigraphy predicted prior to drilling of A· 22 compared wtth the ~ stratigraphy ........................................................................................................................ ,..,
Detailed stratigraphy at R-22, comparing the natural gamma signal obtained at R·Z2 and the silica content, strontium content. and Mg• (cation ratio of MfJ-'(Mg•fe)) of analyzed samples............................................................................................................ 18
Figure 10.0-5 Lower stratigraphic sequence at A·22 encomprlSsing the upper Puye fangtomora1M. the older basalt, and the lower Puye fanglomemtes ............. .... .. .... .. . ............... .. 20
January 2002
T 4biO 3 0· t
'~·304' ,..,,.., .. ,., '141)\llt ..... ,
, idlll4t & 0·,
lid*' IJ 0·'
l4blo Q 0·,
hblo 10 l·,
1 J~t)lo tO 3·~
, .,.. 10 3·3
l.tM 12 ,.,
ht)le 13 2·~
hb4e 13.3·1
TGtH 13 3·2
API
A.R
ASTM
bQI BUS
CME
DOC
DOE
OR
OTH OTW
ox ECS
EOl.
EES
Eh
EM&R
EPA ER
ESH FAPL
FIP
f)r •lltng ~>f,, ln1 onni11K.Jn
f'c;r1ormllf'(..tJ ftt~lh~& fOf R·22
!'J~olJintn~ry of Wr•l1 Sott•n lnfrmnltiiOfl ,,, H-22
Ar-.nulm fill M•llttnnl~. CNitllCIUfllnfl<>n vu,n B·22
&vmm.tary of r tnnl IPumptnQI PhaJtO of Wrr~ll Oovnloprnont at R·l2
0'4)!hA of Key lttt~n6 tnlltnlle<:l Dunnu A ·2:( MP~5 Complot1on
G«<dcttl(. Oaia tOt Wei R·22
xRF AnalyMJ of lavas from A·22
:kAf Analyt.eto f.Jf Sod and Puye Fanglornt,mte S;tmplell !torn R-22 ............ ..
)(RO AnalyMG of Samplea hom R·22
Summllfy o' Str.lddle·Pockf.trflnlec1•on Tost1ng il1 R·22
t1 yOfo<:.hnm•ttry ot Bc,roh<Jio A· 22. Mor;.rta dol Suey. .. .. . . . .. . .. .. . .. .. .. . . . . .. ..
Ac~tonf' Conc:ontretlontln Wnler SampJ.es ........................................ ..
~cttono CQnumtrabOnstn Water Samples ........................................ ..
AnwriCan Petroleum lnstrtute
air rotary
Arntmcan Soc•ety for T esling and Mat'Jrials
below ground surface
Bus•nesa Operations
Central M1ne Equipment
Oauotved organte carbon
Oepa~ntofEne~
Dual Rolary
Down-the-Hole Hammer
depth to water
Dynamic Experimentation
Elemental Capture Survey
estimated detection limit
Earth and Environmental Sciences
oxidation potential
Emergency Management and Response
Environmental Protection Agency
Envaronmenlal Restoration
Environmental Safety and Health
focus area project leader
held implementation plan
v
2
... ' ... 3
....... 6
.. 8
... 9
...... 12
...... 14
..... 22
.. ...... 25
....... 26
........ 31
.. .... 33
......... 35
............... 36
January 2002
FMU F I'Cillty Man:,~af.>nl IJ1'lll
FPIL fif>ld p10j.OC11fll&00f
FSf flefd 8uppon f~tr.il!fy
FTl field ream kla<»r
FTM field team manager
GC/MS Gas Chromfttograptly Ma,"or. St.mctrt)m•ytr-;
GIT Groundwator IntegrAtion T C!<lff'
GPS GlObal Posi11ontng SystGm
HASP health and tofety plan
HE high exploslvfl
HPLC high pressure IIQutd chrornntogrophy
HSA hoUow-stem auger
HWFP Hazardous W a&te F aciltty
IC ion chromatography
ICPMS Inductively coupled plar.mn rna:;5 spt.:-ctrr>rnctry
I. D. Inner diameter
IRMS isotope ratio mass spoctrometry
\,, KPA kinetic phosphorime11ic analysts
LANL los Alamos National laboratory
LOI loss on Ignition
Ma mega annum (radtometnc age •n mtfhons ol yeurs1
MCL Maximum
MOU memorandum of unoerstandtng
MP multipart
MSCT mechanical sidewall-coring tool
MWIP Monnoring Well Installation Project
NAO Nor1h America Datum
NGR natural gamma radiation
NMED New Mexico Environment Department
NOI notice of Intent
NTU nephelometric turbfdity units
0.0. outer diameter
PAHs polycyclic aromatic hydrocarbons
PCBs polychlorinated biphenyls
pH A measure or acidity/alkalinity
PMC Project Management Company
PPE personal protective equipment
PVC polyvinyl chloride
' OA quality assurance
OXAD quantitative x-ray diffraction
Jsnu.ry2002
llb
HC
RDX
HI.WlF
RSP
SAP
SMO
SOP
Sr
SSHASP
sso svoc TA
TD
TL
TNT
TOC
voc WCSF
WGII
XAD XRF
ER2001·0960
r;r,.,r;lf;tunl<ll•on Well f1·2?. Comf•let•on Report
ruli•drum
HHvi'HSt~ Ctrculatron (rod5)
rqy~l dernoht1on explosrve
P.Hl•'•<IC1ove Lrqu1d Waste Tre;Jirnent Fncrhty
r, rcloorogocal screenrng personnel
sampling and analysts plan
Sample Management Oflrce
standard operating procedure
strontium
sole specrl•c health and safety plan
srte salety oflrcer
sern1volatrle organrc compound
Technical Area
total depth
Team Leader
trinitrotoluene
total organtc carbon
Volattle organic compound
Waste Characterization Strategy Form
Washington Group International. Incorporated
x-ray diffractton
x-ray fluorescence
vii
. . -·- ....
January 2002
Metric to English Conversion•
Multiply Sl (Metric) Unit
kilometers (km)
kilometers (km)
meters (m)
meters (m) i--- """ ----l. --~-e~~~~ters (em)
' centimeters (em) i , .. - ·-------·· ---- -----1 i
millimeters (mm)
micrometers or microns (ltm) I··· -···. --··-· ··-·-·· ·····-· ., •·
i square kilometers (km2)
r--------- ----·----------- .. · hectares (ha) t ... ------·-·-···-····-····· ... ; square meters (m2
)
~- - --------------- --· --- - --' cubic meters (m3
)
) __ ----------------·---- " - ".
! kilograms (kg)
~~~~-~~!~,;;;~~i~-~ ~=-~-:_··· ---· , __ ... -~~-~~- ~~~ -~~~~~-r:e_nti~~t!:r (g/cm
3)
milligrams per kilogram (m9'Kg)
r-· -;;~;~;;~-p~;~;r;~ (pg/g)
L- -····--------------··---- ---· --· ------·· -
1 liters (L)
milligrams per liter (mg/l) ·-- --····--- .. ----------- ---degrees Celsius ("C)
January 2002
by
3 781
~19.37
0 0328 i
0:394
00394
() 0000394
0 3861
25
10 764
35 31
2 2046
0 0353
("> 422
0.26
'1:'5 + 32
viii
To ObUin US Cuttomaty Uol!
r111lnrJ (mt)
tnet lf1l
fcf:l tfli
tllcl\66 (tn i
toet (111
rru;he11 (rn l
trxhes (In 1
rnches (in)
~>Quare mrles (rni7)
acres
!>Quare teet (tt~}
cubtc teet tti')
pounds (lb)
ounces (oz)
pounds per C\Jbi<: toot (b1t'l
parts per million lppm)
parts per million (ppm)
gallons (gal.)
parts per rnilli~Xt (ppm)
degrees Fahrenheit (°F)
ER200 J -()96()
U1ARAt. 'lf\llAliOH W[ Hill')'; COMPll TIOU J\lPORT
1t:>CJ DAti, Ml:ll~ ( """'" l'~ttrK.t! lOftQilllltl. nn .. ld :.IM\In!nn Wllllom 5lOI"WWI Oevld LAltt.••n.
KelCh Oteene. f4ed ClAyton. Steve McLin
ABSTRACT
l "·*'••• \t•fl;;tlot.Jt• wc>il H .·;o '" •·~ ah~J ,JI<") ''"'' "''''-'1 :,,.,,..r.,l•n•J (..,n.a<J •. t <lnl Hva1y .and Pllji11110 Canyon .n
I .... "'•lftl•lt. (, ...... ,, '"''"• I.A • ., .. " ll ,,, •••• ~.! r,l the• ,.,,,,., •lo'.!;U'···' '··· ,,,,., ;,1 t Hf.llltKal AtCJi)! rAt S4. lO'&
Al,afno!> f.l41tot,.,.HII I ;lt~or alot'l' 1111~; lo 'V'Nn ,,., 'tlw l ;II>'.! I .tft.·fl. ittld l. Ar Jl I ll11~, c;to;JI iiCtflfl/ af~ Wt.•U If> fhft
e.,.c.vclirll ~~ •1{-'!JIOI ono.llt•!y 'I=' Wi•llt. IQ IJtJ lll">litllfltj on !I of! IIHj•<Jtlill o~qurfllf ;J(> pilrt Of tOO lalJototlory'~
'11ytJ••>94"'•'r"~"- Wo•t.phvl· ILAfll ,998 ~·)~·,·r~t R;>;• ,.,,!. hJIHINl ;tr•tl•m.lilllltd by ftw! Laboralory A
I IIV•tt>nrn('lllli$1 '~·~~!Of ·•''"'' ' [A' f'H)!~.I l t;., M!ll W.}!; <)I•' ,r(Jrwll j;llllliHIIy to J>IOVId~ waler ·Qua~ty itnd
..,nlltl I(,VDI t1:t\it lor p(.o~Nllllli rnh•nn••<,•<;hl tX!pltr ,,(.111, f) I'•< I /llr101. ,1f1d tor th(! ll.:gtOrtal aqurf_,, ojt'.)wngrildtf)fll
c>l ""' INll;..tcr <1H4i ..... ,!!;if rll1y at i A ~ A >'2 w.t·· ··'~·() rl•·~··~JI\4:(J I<J ,_,,llf.H:t neoloy~<: hy<trol<xJw:. ;lJtlJ
<Jt'OLho.•moc.ltl rSat11 1l1.11 < onltoth,1•t lo lt~) oJflc)flf!.liln•J•ng ol It•(! varlof,c tone and rog•onal 3QIJ•Ier '"thiS part
ot ttu, Ud>Q~a1ory In""' Hydto<,/f'Oioy•c. Wor~.p1an A-;?~' wa,_ L·''9'"'111y planned tor •nr.tallatton •n Patar•to
Cltllyon. biJI •1:. ,,,.. ''"()'' ... as lh.,Vf?d to ltl(' mt~!.a lop II) t)(; llu::.er to oH1d more dHfJC11y downgratlt(tnf (II
u.~
H :?2 I>'VII5 clr•ll••d ,,~ , .... o pl•·•~e~ Phoe~ I war, r:OillllJCifH:l dur.ng AuqlJ~t <'000 and cons•sted of us•ng a
roollo~tv 6tom t1U9f.!'! n't!lhrx1 to dnll to a rjcpltl of 4 7 tt lor •nstallatron of !.urtace car;1ng w1th'n 1~ T ~.htrege
Mt•rnbm ot lhf.l U..m()f)h,)r l ut1 Ph<t::..t• II was umduct<>d lrorn Sl!p1fJrllt,m to October 2000 Onlhng methods
''":lu<Jied usang o 1n-c;one btt. a downhole percuss•on hammer. and dual-wall casrng to dnlt both c.asmg
:td•i~nc• uno QP(tf1 nole o~mng Phase II. R22 ... as rJ11IIod to a rJopth of 1489 ft. and a mult•scre+ln well
<.ontatnmg ltve scu~ened mtorvals was anstalled
GeolOgiC. unrtb encountered tn A·22 c.ons1sted of. 10 descendmg order. ash flows of the Tsh•rege Member
<tn<J OtoWI Member ol the Bandeher TuN tndud•ng !he t;asHI GtWJC Purn•ce Bed. lavas. Cinder umts.
1nt~rllow unrta. and subflow depos•ts of the Cerros del A;o vok:an•c held. an upper sequence of
l,11191ornerate ooposats of tr1e Puye Forma11on. an older basalt. and a lower sequence of fanglomerate
dt'VQ51tS of the Puye F ormatiOfl 1 he most notatole <11Herence between the predtcted and as-tound
:.llahgraphy wa6 the grPater th;ckness of the Cerros del A•.., volcamc sequence, Also notable were the
atlf>ence ot Puye F om1at1on aJtaal uver gravels and the absence ot Santa Fe Group sediments Within the
depth dnHed.
Tmee 1ones of saturatton were ant1c1pated at A-22; two wert: perched zones. and one was the r~1onal
zor~e ot saturallon However. no water was encountered unltl a depth ot approximately 890 11. Th•s water
was bet.eyed to be assocrated w1th the regaonal zone ot saturatron Saturation continued to the total depth
of the borehole ( t 489 ftt Five well screens were d•strabuted through the regtonalzone of saturation.
Staaddle-packer/slug·tnJOCIIon tests were pertormed on lour screened mtervals (screens 2. 3. 4, and 5)
HydrauliC conduCiillltaes ranged from 0 27 ftid lor screen ~~~to 2 32 tvd tor screen 113
E •tent>•ve bOrehole geophysiCal data were obta•ned from two ~ources-- support subcontractor personnel
whO conducted bOtehole v•deo and natural gamma rad•iillC!'l survey5 us.ng the Laboratory's loggmg
traaler. and Schlumt>erger. Inc .. whiCh obta.ned a su•tl~ ol borehole geophysical logs These surveys were
conducted •n cast'd hole !rom the surtace to a depth of 1330 It -.nd m open hole below 1330 ft. Open-hole
E R200 I· 09tSO Ill January 2002
llthc·,cJon!.t(•;. 11111~1\uhC rut•'•llllrl( •• I..,,,,. • -',It, , , ,1,
•••lllllill lil{Jfllllon (IJIJ11at>r•HJih lJiol'"''"' '' "; n,,,, .. ,,.
···t'. '' l
"•
:-;~:>·'$~,~:f.-' .t.w~ .. ;r:. :·""~~<f!" '\.,..,
~ ,'I- •' ~ ..... ~ -t!, f , , .. ·'l :,., ..,.,., ,.,~ :d
orgnruc c.()rn1JOlJI1dt.> fi\<l•onu, htl•··. ,,r .. J ··t.•f,••· ,._,' .{ .. ~ '.'•·" l· ,, •• ,., ,._,,,i,.,'J t.-1
:J"'.~"Ill'·- !:'..,
( llVHOr'nlfrntdi Prolt>C.IIOfl Avo-nv; I r PA' •)fH) tt ... I .• I.• •' I'',.' .,,,,.,. 1 · .. u•··! ,, ,, IJ'·M·f"'>'" <;f '.Y 'A_,d·•·~~
G11oundwiltor from ttl(l u~~r ror-,. uJ''''""·fl(J r • ,,,, "' -•r.,r, .•" 1 r '"· ., ·t,.- ,,,,,,, , 1 ;·r, ,,.._v: ..... .r wnt '""''
''''~rjmg/\.j). '-''Iondo (;'1 rn<)·l) ln,t•fl<lt-t ,, 111 , •. ,): -., ,,,_,,,. ''·. ·;_; l _,,,,,, .. ;~.,,~,I(; """J\, rr :~~-. ....
C:(Jnttlinod lllhum at nn octlvity o! ~ ')'t pot_c,(;,l''"'' P"" '·'"''"'( , l t.r ... ,., .,,,, ;·-:' v~(.J#'""fl• ;t':tl!l
plutonaum-239.240. nnd 5lror•t•un• ~1'0 Ml'ti ·~~ :o.-•,r;, 1•·~.:. n .,. !"""-'"··'• ,._, ,,.,,.~_....,.,, "' ,,,.tlfm,J!Tl 7)4
tltilnJum-235, and uran1um 238 wl•lf! 1 4f! {J 1 ;•f; o~r": • -1' '~' .. 1 " ._, .• ,( ''•f)t-,- l '..o:r ,.,tl,o-t r.4f"'Cl'C
colhKiod at 1489 fl war. an:tly/•)IJ lor r,t~'·'1<"• .~.· 1••!·•··· "• :·1 ., .. •, ~•<),: n••·~ (>I .~II) ,~,~.1
January 2002
1 0 IHTAOOUC TtON
1 h1~ rnport ,,.,~>e,lw;.t.. If.,;' <Julh••\3 .an<l h.•:.l•n{.l ·" ,,,.,,,, .. , lr,r '·'''""'·''J''';•Iron well A ?;; R-22 . ...,;~!> lunr1ed and
lf\to\illl.c>d tly £ n lt.., lbjl(>rl '"' (>11);1111/11(1 rfllt, !wt; IJ.tr!fl l' •• rt ' df::;utliOb allltlf! ~crahonal iK11111fl&tS.
•••volvt~d '" trl-~l•tllng 'JH;u'·'1"""'''' rnofltl()rtfl!J .vc·tl I~ ;?~ P .• r1 II pro~·'""'to rho rosullb I rom an>JIY~•5 of rock
;and wts\~f e.nmphH• a11<1 ;tn rnl<.•q;rul;.l1tOf1 ol lhn l)t't,luq•t .. '-l'~'J11tlyJ,t<.al. hydrologiC. an<l gcoctl(tmiCal
tontlrlton• t10{,our•tt>r1'1d '" ltlO b<)l'l;thOte
R l2 ·~ lrxaltt(l .1h>P lh«• fhtH .. l :''"'''''·lltfiQ c .. (),lfJa l.!i•l Bt;Oy and P.lj<HIIO Canyon. eaftl ot the waste
tJtt.pOt.lll lra~tlrty 111 1 A-~ n.n ..,.M OrtHe<l to u tltrplh (,1 148911. and war. cornplf:'ted as a mult1soeen well
t. onla;rnng fM.' lfl(rf,otlf!d tf'ltorv;llr. that can bf! r, •• rnpl,~!1 •mJ•v•dually l11s the r.oventtl charactenzatlOn well
<JIIllod tq lhfl '"{l")nlll :,q,J•for a~ part (Jf the ·Hy<1rO\Jf:•olog•c Workplan" (LANL 1998. 59599) 1n support of
tho ·oro.undwitter Prote<l•on M<tna~emt.1nt Proyram Plan· tl.ANL 1996. 702151 of !he Laboratory.
fl·22 •G prtrlliHtly dfl'fltQfl(.•d to prov•de wnter quality and water levol diila lor potential •ntermed•ate·depth
porctutd ronofi and tor~ reg•onal nqurfer downgrad1onl ol T A-54 In the hydrogeologiC V'JOrk plan. A-22
wl\& owo~tnally plann6td 101 •nf>tallal•on tn PaJ<H•Io Can'Yon. tlul tts loc:atton was movod lo the mesa lop so
lhftt It would oo clot.er to T A· 54 and beHt1r sw1od lor a fLJiure momtottnQ well.
Allh<n;gl"t F~-22 '' pnmanty a cha,actentaltOn well, tiS (le:;tgn al::>o meets !he requtrements of a monilonng
w(!>llll~ d@~tr)('td •n Module VIII of the Laboratory's Hazarrjous Waste Facility Permit (t-iWFP). Incorporation
ot lh•s well! .nto a laboratory-w•de groundwater monrtonng program will be evaluated at a later date when
tho result$ Ot tht!> c:haracten;ahon activity are tnlegrated w•lh groundwater investigations in the
Hydro~ologte Woti<.plan !LANL 1998. 59~99).
PART 1: SITE ACTIVITIES
2.0 PAEPAAATION
Preparatton ac1JVit•es al R-22 Included admtntstrative preparation and site preparation. A graphtc
dep•ctton of pro)ect htstory to accompany the text below is presented in Appendix A. Appendix B
compares planned and actual activities at the stte. The following text sections are arranged in
chronological order.
Preparatory work for dnll-hole A-22 occurred over a penod of approxtmately lour months. Th1s ttmespan
tncluded preparalton of the statement of work and the field tmplemenlation plan.
2.1 Administrative Preparation
Washmgton Group lnternattonal, Incorporated. (WGII) received contractual authorization to start
administrative preparation tasks on July 12.2000. As part of this preparation WGII developed a Site
Specific Health and Safety Plan (SSHASP) tor all entities involved in A-22 work. WGII also prepared the
R-22 Waste Characterization Strategy Form (WCSF). The Laboratory prepared the field implementation
plan which outlined drilling and sampling plans tor R-22 to guide field personnel in the execution of field
activities. The host fac•hty, Factlity Management Unit (FMUJ 64 (T A-54). implemented a memorandum of
understanding !MOU) wtth ER, in lieu of a Facility Tenant Agreement to provide access and security
control for the R-22 pro,ect.
The com~leteness ot all admintslralive documents. permtls. agreements. and plans was reviPwed at an ER
Readrness Rev1ew Meet1ng on August 10, 2000. The Groundwater Investigations Focus Area project
leader s1gned the Read1ness Review Checklist on August 15. 2000. giving authorizatton to begin field work.
ER200 1·0960 January 2002
CltiHiiCit>fll/liiOfl Woll H2;' Comp1n1'"'' l;.,f'ml .. .
2.2 Site Prepar•tlon
On August 1 '7. 2000. :;tiel J;I(!Pi•' .,t,r,r ,,r,r~ ''1"..1·•' _,• !'·•· H •·. . 1<· · ', ::. '· ~····· ' ,,,,,,,,_ ~,,., 1•1"1··~!(:<') Ill'•
(Jrilhng f,lt(l under lhtl !1HOCIIOn Of \..'Y()Il IIHIIH!Iy tl,<• ·,·l(: ,,,J:. · ·•'.JII••J ··'··'~.J .1 r.,jli<)><,,'Of A ,_..-r "*~ """"'' oxcavutod lor the dnll n;ttulgf• •lf•(J liru_.,J ""'"' pl.s:.'•' Ti>~· · ! ...... , •. T·•·J•· J ,, •• ,; ..... ,•MI r,.,~e~ ""·"'"""' ..... t
spread over the 6tle ;-and compar.lu(l. d'•<l H••1 1a1 • · •. n_,, ,,.,·. ·:,,·; .:· : · ... , ... '"";'"'' ,,, !1·«~ •.tl'ilW ~.,.,,,
The stte wrs fenced lor ncc.ur.s ( <·n!r()l_ .tr,cl r,!lt<.•· •·., , ......... ••· r .... '-1' 1 1-. !!·•· .,.,, ''of.le '''«•tHsua .. 1forY•
HCitviltes wure complutod on AtJ91Jf,t :10 7000
3.0 DRilLING
Drilltng of A·22 was conducted tn 1 .vo ph.l'•(J:; P•·.s· • ., 1 ~ •.• ·• :• ·1,. ·1 t,, ',;:(: "'w' lvr,!tl4r'11 Dr~WI) lf'lJI'.
(Stewart), and Phase II was <lrlll(•d l)y Dynat<_.,~ Dnlll~"l (•,rr,;,o~'•y !ll<'·••t•K' Pt •• .,~.4;!>-t! itll<:J II Mill QQ·:.•rJ~
•n greater detail below. Onthng sh•ft mf,Jrrn:l!lon •1> '~'-'''" "' 1 ,,,,.,~ ·~ •1 J•,,r,c.r•nar..:., m.CJs!;oh..:• '"' A-72 ••
given in Table 3.0.2.
r"·------------·· -----·-·- -·-··· ...... ~--~-··-··
' Operations Category 1-·----------·--··-·---"' ----- -------.
Table 3.0·1
Drilling Shm Information
OatH
: Phase I drilling/site pwparalior.irig m(lbthw!•• •n 1---------------·-------- .... ..
Au"'uSt 1 7 ;..ti\JUIII 2 1 <'fl()(l
~I drilling ___ .. _____ .. __ ........ ..
~ecp~.!sics/well de~~~----- .... __
~~~~;ular ~==~~-~~~--· ___ . Well develt)pment/hydrologsc testtng
Westba~~------- .. -·--
: September fl · (klol)Cr l 1 ;•()(IIJ + . ... . ... --· : October I 2 ·· Or:tr;t:mr Hi. 2000
! (X Iober 17 · Ooot~!f 1 9 2000 ... ..... : Odober 20 - No·<~~ml><3r 3. 2000 t· ... i No1. ember 4 - No--~mber 1 9. 2()(1(
·-~ ....................... ... ·December 6-- Oecemb•Jr 8. 2000
--···---·-• • ··-· • .,... ··--· -· ••--c -•••
Sur1ace completionlsite restorat•on tasks : December 4. 2000 ... Match ?.001 -------------------· .. _ ------"t-----· ·--........ --.
'------· _____________ !_e>_~a_t_~~~ft~ .. L~_ug~~t17- March :>001
3 Includes trme modifying stabtltzer
:1 1}-1111
~7 12 ...... ~
3 12-tv ..... -·-·-·····-··· --- .. --·--.
+ • ' 0 -·- •M••o- ••••'
145 12·,
Phase I was drilled using a 10 112-tn.-outer d;ameter (0.0 1 hollow stem auger !HSA). Stewart Brottlets
Drilling, Inc .• augered the pilot hole v.·rth a Central Mtne Equrpment 1 CME)· 750 dnll ng. and then ovet·
reamed with a 21-in.-0.0. HSA to 47ft.
During Phase II, Dynatec used a Foremost Dual Rotary (DR)-24 d11'l "9 F.nal well developmitnf and
hydrologic testing were also completed ustng the Foremost dnll ng. Dyna:ec provrded three-man ctnlltng
crews, crew vehicles, drill hammers. dual-wall rod systems. a l·ton flatbed truck. water trucks. and a
1G-ton boom truck lor handling casing, drill ptpe. and heavy support apparatus such as caS~~ ,acks
The EA Project's Field Support Facility (FSF) prov•de<l dnll cas•ngs. drilling bits. a small front-end loadef.
the dust suppression system, field support trailers (tncludtng logg.ng anti samplrng trarlers). watef
contarnment tanks, drums for cuttings management. a Hermit data 1ogger and pressure tranS<Juc:eJ$ a
depth-to-water meter. water sampling bailers. a diesel·powert~d elect11c generator. and water-sampll.t
testing and filtering apparatus. The Laboratory's geology and ge.ochemrstry group iEarth and
Environmental Sciences [EES)-1) provided a core-loggtng nucroscope. Enwonrnent. Safety and Hedlttl
Division (ESH)-18 provided a geophysical logging trailer.
Januaty 2002 2 ER200 J ·0960
a; ::J § -< ~ ~
Note: Perfonnance statistiCs cover entire histoly of drilling.
a Down-The-Hole Hammer.
b Total depth (TO) of borehole is 1489 ft.
c nta = not applicable.
148
11.0 -nla
rva
nJa
Table 3.0.2
Performance Statistics for R-22
18
4.6 --16
4.6
n/a
~~-in/a 148 · n/a -----· 11.0 In/a nla nla
-n/a In/a
In/a ln.'a
---fnfa in/a
d lncfvdes Cerros del Rio and older basalts. and lnterflow deposits.
elncludes Tshlrege and Otowi members: no Ceno Toledo present at this location
Q ·~
;~ ;; ::.:
::?
~ ::,
ll
~ (") c ::; i5 ~ 0 :I
i 0 :I.
3.1 Phase I Drilling
On August H\, 2000, thfl HSA r~q drJIIe<li(J a c.l!:~ptl: r,l ·~7 It t.o_·lr,w 'J'';ul\d •,rJr1iiC'' (t>r,J6} ,, protHH.tbon !(}I
setting the 18-ln. (111ner d•arnotcr (1.0 ll surl<Jce c•JrHl.JC:tur •-.s~·'"<l '1-./t\(Jn crt:wr, rolurn«td to me !>II" Ofl
August 19, 2000, the bon om or me hole was tagged at ·lO It ti!JS TtitJ 1 8-tn cr,ncJut.:tcr caUifiQ wa.t
inserted mto the boring and pushPr1 into thf~ ~.Iough anft ~ •• ;It !ull .t! 1~11;: uo!!orn ol tl1e tiortng, gtVtng a ~-ft
length of conductor casing w1th a 2·11 :o;twkup. Tho e<;ncl<lCt()r r:;,~,mo -.. •• 1~. 11•-.:n c.t!mcnted around m.t n'VWt
annulus. Phase I drilling was completed on August 21 2000
3.2 Phase II Drilling
Air-rotary drilling commenced September 8, 2000 FIUJd·ass,sted. <m·rotary dnlllng was porformod •15f0g
the dual-wall reverse-circulation method. in the dual-wall rever~;o·CIICulatiOn method, compresae<J &If and
drilling fluid are pumped down into the :mnular space looted between the rnner and outer dnll-ptpe watt$
The returns come up the center p1pe. Drilling flUid consr:;;ed of munrc1pal water mil(ed With OUIK-FOAI.tli
and EZ-MUD plud.J!J polymers. The drilling flurd was added to tt-.e compressed-air ClrCUia110n medium 10
help remove cuttings and stabilize the hole.
The borehole was advanced beneath the 18-in. conductor casing w1th a 16-m trr-cone bit to 194 tl bgs
When the dril:ing operation encountered comretent basalt at 1 94 tt bgs on September 1 f), the bt1
configuration was changed to a 16-in. down-hole hammer brt. and borehole advancement contmued 10
this manner to 212ft bgs. On SeptembF>r 12, 210 tt of 13 5/8-rn. 0.0. drrll casing was installed tn the
borehole to help stabilize it.
After three days of adjustments to the stabilizer rod. drilling resumed on September 15 using a 12 L4·in down-hole hammer bit, advancing the borehole to 252 ft bgs. At this depth, drilling was hindefed by 1051
circulation and an unstable and caving borehole in Cerros del Rio basalt, prompting a change to a casrng
advance method utilizing 13 5/8-in.-0.0. drill casing in tandem with a 14 1/2-in. under-reaming bit. ThiS
method entailed reaming the borehole with the 14 1/2-in. bit from 194ft bgs to 252ft bgs.
The 13 5/8-in.-0.0. drill casing was advanced to 510 ft bgs on September 24. It was reamed irrlo basaltJc rock at this depth to avoid having tc set the casing into the less competent Puye formation. which wru;
predicted to underlie the basalt closely at this depth.
Below the 13 5/8-in.-0.0. drill casing, the borehole was advanced open hole to 1258 ft bgs using a 12 1/4-in.-diameter down-hole hammer bit. On October 2. the decrsion was made to change to a
12 1/4-in.-diameter tri-cone bit in an effort to prevent the diameter of the borehole from expanding in less
competent formation material. Upon tripping the 12 1/4-in.-diameter tri-cone bit into the borehole, crews
discovered that the borehole had caved in at depth to 1160 f1 bgs. The 12 1/4-in.-diameter tri-cone bit was tripped back out of the borehole, and 13 5/8-in.-0.0. drill casing was .etracted to 510 h to prepare for
reaming the open hole with a 14 1/2-ill. under-reaming bit. An open-hole v1deo log was recorded October
4 after the 13 5t8-in. drill casing was retracted.
The 13 5/8-in.-0.0. drill casing was reinstalled into the borehole ustng a 14 112-in. under-reamtng bit and
set into competent basalt r.t 514ft bgs on October 6. The borehole was then advanced from 1160 ft bgs
using a 10 1/2-in.-diameter down-hole hammer bit in advance of 9 5/8-in.-0.0. drill cas•ng. reach•ng
1345 ft bgs on October 9. The 9 5/8-in.-0.0. drill cas1ng was hung on casing jacks to a depth c;,f 1330 ft
bgs on October 1 0, 2000.
January 2002 4 E R200 1-0960
1fe: l•t,I'IC!I'trt.llilt' ~~!' ."..f,,.· ... '•' r•nJ 'I\"'''• '·•.lllll1 '".!"'· ffu•., frlJ·,/1"~ ,..,,,:>"j ~1 ~~ .. ' •' ·f· 'J•.,,fYtU"f:~·t ')t.r*"' fw.;f;e! , . .u:t:ffl\P"~ CJiit
tu :a tut•' ~ 1 H1, ttl l .(1!.:, rt 1 "J" ,_,,, (JdtARI l 1 1J t., ,, ·J- ·''J"l~n 'j' "'"'' l <;ff!Jjlontb() ~• e...,. I "'""'"~~
• ~ • l
!tre: b•.,•t<h••~~> """c. • •l··•"'li' . .., ,, ....... , .• · .. .t•Q ~"" l I·'•~ ,,.,..,.,, .... ,.,., '·"· f r !IA~~<~~'f ·1 /f:t'I'J Thct l~flfrf>~./14 NM
·JIIIICO(J to oll lu\131 ·~.ff·, •,~ •; ~.tl II l.•;~c. '•r.rtf>~4 u<J'• 11 ~~N(Jtloe•l h~<.• "'II..· • l 1/.J !; .t'Jtl) 'I'M'\ 1) :t.f; ft l>f,l*
• 4 ~ ti~ bCf1 Ill ~. l (J 11 ~ he ".,.,.r, ,. • 11 t\tn kl .:t ~ltl• •Jf /' 2 'J f1l
! 'w1 t ~'*'',... 11 ~·at. :•(14"" '"'" •;II (}lti.Jt- J, 1 'lti I 'I :~·6 .r1 ~.l:u"1 Ca~•rl·'J ,_>If> l<l' ... I~< I In 1 !J0 f1 t~ .~ lr"'
"',IC"flll ~•lall IU', I!);!·~) f! ~""""''«!'the I><~ ~llr. ltJ() l!t'J'.J!"') IO l;t,f'lllfll#ft
c.,. (:}.:1r..tw• ':.' tl1Cio '"~'.,.."·"*' ,.,,u, ua~ t•J S1 d.-:-1""' n1 1 ~no'' wth (f •, t1 "' <.m.or~ A""'*' 1'.)1(,; NIM run to
! :\'.'1() n t)IJ! f1'«1')'< "~" "'~' j>i',I!IM """ """"'""' 'fwit~ h>O ''"'""''I ,, I ( ',.n~tl'.llf') ,. Q:.rnma ~~ ,. .. r.,n 1'.1 '4 7~" ~
t ,.., < ntTittf 111 WAt• ~~111 l~;n !)('.M'fl 1~ t~ ()ofl (~: !c)t')(>l 1 •, T "•' (, 'd'l '" r;a~•ng Wilt; iii till 14~ at 1 330 fl
P.~ 111'10 the LAI~MI'IQ ~-~ ll,lf1 W , .. 8() fl ~
1 heo l,ANl (.l!IIIJ_, •rJI()I w•u• .;ttt/fl>(J on Oc lt;bm 1 n to nw.•'·'J"' tt ,.., ''H•".S.i of trMl wt~ll t ru,.~r..g A ·,(~!!~ lOg
.,.,", ,_lc.o ,..,~eon <Jf th• '"~''lOt ot tho wo1
l he! l.ANL 11•4fT'If1Hl IQOI w1u tftll</~d Qfl ()ctl.'lbqr ~'> •il'lO n ,,,~.tdEo ttw woll C:«lr.•ng to check~ P'k~ of
n 1t1 pllll;:.,nwnt ot ;trtn\IIAI l)OK;idtll m•na~
l tiC! ll'ldtfO ~llmura wiU· rvn on Nv\l&mOOI 7 and 13 to <:.hock on ,..hcthN Y-1cens Mlfill cleaflfltg up dunng
rlovolopment
On Nov~r ;>0, the (;llmma tool and ~·Ideo l<,g were run lor tt~e lasttJme to vtew screens and check IOf
b.II(J(t'lll p&ac~
6.0 WELL DESIGN AND CONSTRUCTION
Tt10 tOfloW~ng ~1lOI'lS d&scrlt>e how laboratory and sutx:ontractor geotog•sts and geopnystC•Sts des;gned
tN well
4.1 WetiOH9't
Geopt'lysallogi. v.oeo togs. and borehole cuttmgs were rcv•ewed to plan screen placements tor well
cQI'lstructJOn TN! number and placement of screens were des•gned lor the follow1ng purposes:
• to r.ample the top ot Jh.e regional zone of saturat1on (screens"' and #2) where two screened
enter-walt; WEtre necessary s1nce two dlstmct statiC water levels were observed;
• to sam~ Within the upper Puye Format•on fanglomerate 1sc~een •3);
• to sample 'Mlhtn the older basan (screen U); and
• to sample W1!htn the lower fanglomerate tentatn1ely assagned to the Puye Formabon (screen tt5).
8.~660 on both on·Site obserwat•ons dunng dnlhng and g!)ophysacallogs. we concluded that m perched
waaer was present dunng the dnlhng ol R-22. therefore all well screens were located •n the •egtanal zone
of saturabon T1t(1 planned and actual screen tocat•ons a;e g•ven m Table 4. 1 ·1.
ER20CH·0960 5 January 2002
Tab~~~tdll
Summ•r" of w~·· ~~: ,,,..,." l~th~· ,..,.,.UHI to• H' ,,
1 '1')7~ 4-itl':. 1
;• ,,~,o (j. 001 "
J ,n .. ~ l?ftl(l 1 ;•' ;· •• ! • 'I ••
4 1:\00 2' 1:~HI
~) 14411 , 14~1 14-i. \ '•1' ... ,
" c.., ..... ( .A)Iotrt.lfl c.'k-" 14.tt)
From Oc1ober, 7 tlliOUQh (kl•.Jt>e•t l'l ;'()'X• u ••...•••..•• ·!"'' hCI'' .o:;.r· • .,.i ·•'•<J r .... cot.r,ffll!O'~~ ~,.,.( C:·~
ba&ed screens weiC on{)talled to •. , TO of 1-f ·;, ~~ 't tJ<J~ t ·""",;, ,., !··•"'"'~ ,,~, "''1l~..ia<1oii<J /ltf.JIQ..., *"~
belOW uach ~.ect10n Of scrO(fn antJ ~,·pr,- 100 It ,,tooq H>c' t.<.o•·t< 'i\.I,•"'J T '•~I itf':f, :1.' ~C.>I¥..<111 .-o·~ t:.~.liP~~
Wlfh allernntmg mtervals of t)(!r.to'"'tl pcslllltt. • .na : .. ;•><l! .. •u" f v ~.t,,tJ,iiT; '.,~·-·•""'' _,~a;t~ .,..,.,." ...,...~~~ l/11
1335· to 1J.~5-f1 bg&. 1 132· lo, 14;?-fl f>gt.. nn~ '\.to 7~·1'! IJ<;J:>
The bl~mk well ct.:.•ng and the p1pe tll:>(t<l f:,Cr<!of>fl', .-,f!ltl (.or ~.H1Kh'•l :1! )IJ..t :;:.,,,.tloe~~~· "'e.oo ., ... ~~ t:r Amencan Soc•ety lor 1 cst1119 of Mdlt>n;jlf; {AS T M ~ ~~<;4; ''~•'·•' '•1<1'•'!.1111:> t •!e~r-."tt c-C~"9 ......,... "llltiO
type 304 stainless steel. The coup:.ngr, li~O<l wer(, a m•• ol A~; T M !.l;tn<l<tr'J AJ! 2 Nld A!Jt' ~Of •"'·t:r• exceed the tensile stwngth of the ttlrt;HJcd uu .. mg t:fld5 Tt,~, con-.:- ·.;,!1()'1 nl ( c"JC:141f19 i>o\AI't4WO.
necessary lor the vtmdor to prov~<:1e tho cat-•ng Pl,l!t~n;tl!> .n ,, t11nvty rn/IPP•.;• af){l <}Oolt'5 ~ CO"Y''CJ"~.,.,
integrity of the well.
The pipe-based scrt~ens used throughout t!le well werr, con~,tru.:.to~J o! me ':.Jrne !;)afnetot ~ .-. "
blank casing risers (4.5-in.-1.0.!5 0-•n ·0.0 st<uni('SS steel! Thn~e Ylftcfl!, werf! c~111x1ed trr ~
0.375-in.·dtameter holes in lO·h sect1ons of well c.as.ng and \l':f!IO;ng a W1re-w•a' rO tHO·!tl gap! c.et lhe
perforated mterval. The final 0.0. ol tile screene<l•ntervats was 5 56·m
The stamless steel well components were cleaned usmg a hoi 'hul<>r ctuaner and ~r\Jt> ~ or.-'61o'!ff
The bonom of the borehole was measured at 14 78 tt t>gs w•th me t•em•e hne oolore weB CJU~f1Q ...._
ir.stalled. The bonom of the well sump was 1472 9 h bgs. Sta.ntes!. ~;teoi etlntrt'IJ•le~ ~e lfliSt.llled at!Owe
and below each screen, and. in severallocat10ns. above the zone or regronal ~a!urabOn (f9J'O 4 2· 1) AI
backfill materials were emplaced through a tr&mte ptpe.
4.2.1 Steel Installation
Well construction consisted of .nstalhng sl<:ul'less ste€1 and r:art>:.>n ~.t~et ,,-ell llJb•ng at!o Pf~abO'\ tolltlolt
multipon Westbayrt.t sampling apparatus spec•f•ed m the well oe~.,gn Dynatec •nstatl-e<l Ule we!/1 ~
from October 17, 2000, through October 19. 2000. :n four dollmg 5t11tt~ ( 1 a~ 3 0·1 1 Statnlte$4 ~
centrahzers were a"ached to the welllubmg belov. illl<! abovo: eacL soeened •nterval and ~eo<l e-vefVy
at no greater than 50·f1tf'tervals •n blank-tubmg sect.oos t>..~tw•~tln ~.u.:,cos F •gul& 4 2·1 1.$ a gt~
illustration of the final well tubmg configuration and <}cpths ~J~
January 2002 6
Drawing Not to Sc1Jie
All depthl teet bolow ground surface
!() Y4·.n f)r!Jlt!Cilltl: WVf1T
i ;('··;I '• \ Col Wig l~ .n .• :x..~r qrouna levet --·-·.1;:=::11---Lockmg cap
i·T,, Cementpadj5f!J10h•8m;
:•VJ:Ilo•t 1&-m surface castng to 471!
7)0~---
12 (5-<n (51Cdo 1258~ft) ___ ,.
oorehole 857 o 11 --
Screen 111 1872 3 to 914 2ft}
Screen #2 ~947 0 tc 988 9 "!
8620h-
5 0-tn ·0 0 --------.1 s s cas•ng
1132.011--1142.011--i-
1234 511 1243 5 ft .:::t
Screen #3 -----(1272 210 1278.9 ft) 1284 ft -
10 S.tn (1258to 1489 II) borehole ----•
Screen #4 i1J78 2to 1384.9 ft) 13870 II-
1389.011-
Screen #5 (1447310 1452.3 ft)
Sump 11452 3to 1472 9ft)
1435.011~ 1437.0ft~
1478.011-
TO 148911
Ct~me111
&-ntrm:te ct;1ps & wasr>ec yrilvf:i f'JJ/50 m1x}
----Cement
---- Bento111te ctlipS & washec grav1:11 so.·so m11j ----Cement
--- Bentomte ch1ps & washed gra~et iYJ/50 m11)
--- 30fl0 sana
--- 619sand
Bentonite pellf:ts
--- 20140 sand
---- Bentonde pAiie:s
----Cement
---- Bentonde pellets
--- 20t40 sand
---- &'9 sand and nowmg lorrnarJOn sana
---- Benronite pellets
r---- Cement
'"'::==== Benronite pellets r.. - 20140 sand
r ----~8112 sand
------20140 sand
+---- Bentomte pe/lers
+---- 20i40 sand
...,_ ___ 8112 sand
----Slough
Centralizer Depths (ft)
70 872 1287
180 919 1341
280 945 1370
380 994 1395 480 1070 1440
580 1155 1465
680 12;>0
774 1:1{)5
Note The screen mtervats ItS/ tne toorages of the p1pe perlorat10ns. not rhe tops and bonoms of screen JOints.
Figure 4.2-1. As-built well configuration diagram, well R-22
ER2001-0960 7 January 2002
4.2.2 Annular Fill Placement
lnsert1on ol annular I11J conslt;tr:d olu•,,nH ll 2 311fl ,,, ~.,,r:.,J•· d1,,,,~h•r 1 1·1 16111 If•:.•<~ .. tJI.tfl•••Wt u~
tremie pipe to dohver annular m,II!Jilal~. to tile sr,•:•. :I11~<J ·J•: :.1,111 :J•"ptnb • ::<:f: Iron 4 21 Oywtlhl'. •n!ltaiu.:<J 11 .c.
annular fill material from Oc1ober 20. 2000. thrOU\Jf' Nov,,rntJl:r 3. ~00<J. 1n 28 dnlhng 5tufb (T 1\J)olO 3 (\. 1 1
Sands were emplaced at screon rnterval!, and 111 kK<tlr<m~. rHH;~:::.:,;~ry 10 ;!ltr,·,m-tt(, t>ackfill t.!ovQh ~
were trem1ed using municipal water a!> a fll)I(J slurry 5m,h;rllh~: ... ,...ew o:nplacod tJctwoon y,;.c:;r~IOO
intervals to scnl the annular space and prevent cro:;!> r.:ornmumcat1on ot yrouncJwatm oolwoon &et~.
they were delivered using EZ·MUD® (polyacryl;srnldf:·~olyacrytate copotymt•q mr:wed wrth m~ w~
as a fluid slurry. Portiand cement (miJr.ed at a ra11c ol b gal o: wr~ter lor each 94·1b bat;~ of cemf!nt) .,.._
used to provide foundations for the annular 1111 and wUi·t1cao prutoctron of tne onnular r.poc" rn !he
borehole. (See Figure 4.2·1.) During the insert1on of annular f11!. sevf.Hal truc~loa:lfl of munJCJPDl ""&Uir 1at
approximately 3000 gal. per truci\load) were transported to the R-22 stte
Table 4.2-1 is a summary list ol the annular fill matenals tn:>:i:llle<l The ~1nal conltgurahon of the annvt.ar
materials is also illustrated in Figure 4.2-1.
Table 4.2-1
Annular Fill Materials, Characterization Well R-22
: ioi4o sand8
: 30/io-~~dii ! 6/9 sandc r--·----·e:. , 8/12 sand
Material
i-v~;d~Art®. gravel<~
i Holeplug<!Y bentonite chips" ,----............ ·-·- .... f
I Pelplug<bl bentonite pellets ~·----·--·-----·-···-- . -
i Portland® cement0
Amount Unit
:!45 50-lb bags
27 50-lb ba~
161 50-lb bags
83 50-fb bags
833 50-lb bags
1000 50-lb bags
238 5 -9al. buckets
190 94-tb bags ·a··----·--· .. -· .·-. ---···- . -
20/40 &and IS med1um-gra1ne<l and used to pack screened 1ntervats
b 30f70 sand is fine-grained and used to separate screen packs from beniOf'lrte
c 619 and 8112 sands MA r:oa~ <>nd u~ to plug lonnatron !factures and matrb
d~:~rt® is an angular '"·rn. gravel used to 1mprove bacl<lilhng 1n washed out
or cavernous intervals e
Holeplug® bentonite is 318-m. angular and unrehned bentomte ch•ps f
Pelplug® bentonite is 1t4·in. by 318-in. refined elliptical pellets.
9 Portland® cement was ffil)ed wtth mumc•pal water at a ratro of 5 gal water lor
each bag of cernenl.
5.0 WELL DEVELOPMENT
A-22 was developed by scrubbing, bailing, bailer-surging. and zone-specific pumping. Initial development
consisted of scrubbing the inside of the casing and screens with a brush installed on drill pipe. Aher
scrubbing was completed. muddy fluid and settled solids were bailed from the well. The initial high
turbidity, pH, and conductivity readings (Figure 5.0-1) were l;kely due to cement-tainted fluids that
c.pparently entered through screen #3 during backfilling Tho 31·ft long x 3-m.-1.0. bailer had a capacity of
approximately 11 gal. Bailing was performed initially from November 4 to 11. 2000. and finally from
November 12 to 14, 2000. A total of 2095 gal. of water was bailed 1nitially. and a total of 2020 gal. was
bailed between November 12 and 14.
January 2002 8 ER200' -!1960
25 ··~--1
l . . . . ... . .. .. ". . . ""' .. , ...... . ............ .. ......
I
-Turbidity (NTU)
-·-·--pH
-Specific ConductMty (m&'an)
· · · · • Temperature ('"'C)
5
0 L---------------------------------------------_j 0.00 50CO.OO 1 CX.XXJ. <X' 15000.00 20000.00
Water Produced (gal.)
Figure S.G-1. Results of final development by pumping for screen #4
Development by zone-specific pumping consisted of using a 7.5-hp submersible pump to clean out the
sump and to conduct targeted development across from screen #3. A 10·hp submersible pump was then
tripped in with an inflatable packer below. Screens #3, #4, and #5 were then pump developed. Screens
#1 and #2 did not produce sufficient water for pump development. Pumped water was metered and
monitored for turbidity. Each of the zones was pumped at a rate of about 1 5 gall min through three on-off
cycles or until turbidity of the produced water consistently measured less than 2 NTU (Figure 5.0-1 ). A
total of 34,762 gal. of water was pumped from the well (Table 5.0-1).
Table S.G-1
Summary of Final (Pumping) Phase of Well Development at R-22
I Range of Field Parameters•
l Water
Elapsed Time produced Temperature
Screen II (mln)c (gal.) pH (•C) -
I Sump 725 8086 8.7-7.2 16.4-22.8
3 761 4046 8.0-8.0 21.7-20.7
3d 705 3319 7.5-7.6 20.6-23.0
4 1303 15.785 7.6-7.7 23.2-20.7
5 473 3526 7.9-7.8 22.6-23.2
8 Parameters presented as value at beginning followed by value at end of pumping.
b ScrMn 11 was above water lable; pumping at screen #2 yielded no water.
c . . Trne dOes not •nclude intervals when pump was turned oft
d Screen 13 with packer below screen #3. (Packers not employed for ol.tter screens.)
ER2001-0960 9
Specific Conductance
(pS/cm)
2-ID-160
19(}-170
160-180
19(}-170
17Q-160
Turbidity (NTU)
42.()-4.3 -21.(M'3.7
40.&-4.2
14.1-3.0
5.6-2.7
'·'
...
... J ••
;.
)
6.0 SURFACE COMPLETION AND SITE Rf:Sl'ORATION
The surtace completion lor well R·22 involvod po~mng a 6·1n ·ltuc~. ru.nl')rr.od concrete pad.~ h b.,. 10 h. around the well casing to ensure long· term struc!ulill,ntegnty ol1t1o well. The concret(l pad &1$0 wdl
support a small, lockable steel housing for wclllll:;trumenta!Jon. "The concrete pad wu matal&d 1n
January 2001. A brass survey pin was inslallod m the <;<H.crull~ pad In ad(Ji!JOO, lour romovabie $tAioOI
lJumper posts were installed at the corr"·•s ollhe c:oncr(~to pad to prolocrrh., wellhead •rom v~
The R-22 site area was recontoured ro match the surround1ng ropography. Before r~ntounng W'Oftt
began, the cuttings pits were excavated. the plastic hnmgs removed, and the pits refilled. In add!bon, 1h8 A-22 site was cleared of the slash piles created b~ tree remc:val during construction of the dnll pad
The hay bales and straw wattles that were part of the R·22 stte bofit-managemont-proctkes inltdobonl remained in place as needed during and attar the postoperational reclamation proce&s. Once lhe &ne had been physically reworked, the area underwent reseedin!~ with a LANL-prov1ded blend ot nattve grasan mixed with straw mulch to facilitate reintrcduct10n of grOJJnd cover.
During all drilling activities, the archaeological sites pro:.i~nal to the pad remained undisturbed.
7.0 HYDROLOGIC TESTING
Straddle-packer/slug-injection tests were f)ertormed on four of the live screened intervals at A-22 (screens #2, #3, #4, and #5). Screen #1 w0s not tested because it straddles the water table. (An1Jfybcal methods specify that the screen be below water table.)
The test consisted of isolatbg each suitable screened interval with a pair of inflatable packers and injecting municipal water at a constant rate for a short period of time. The rate of injection was fTlOOft01ed by means of a flow meter and a watch with a second hand. The flow meter was installed between the water-supply tank and the Bean pump on the drill rig. Pretest water-level depth was determined using an electric probe. Water-level depth during testing was monitored with a transducer and datalogger. Complete details of test design and execution are given in a report being prepared separately.
8.0 WESTBAYTMINSTRUMENTATION
Following well development, the WestbayTM MP55 system for groundwater monitoring was installed in lhe steel-cased well. Model 2523 MOSDAX® System sampler probe equipment provides the abHity to collect groundwater samples from each of the five isolated screens in the completed well.
A multipart (MP) casing insta!lation log, which specifies the location of each WestbayTM component in the borehole, was prepared in the field by Westbay™ in consultation with the Laboratory based on lhe R-22 well-completion diagram. Available geophysical logs and an as-built video tog taken inside the steel well casing were also reviewed before measurement pons and packers were sited within the well screen intervals. The final version of the MP casing installation log was approved in the field on December S. 2000, by the Laboratory prior to installation of the WestbayTM components. The MP casing instaliation log as approved was used as the installation guide in the field.
An MP measurement-port coupling and associated magnetic location collar were included in each primary monitoring zone to provide the capability to measure fluid pressures and collect fluid samples. A pumping port coupling was also included in screened zones to provide purging, sampling and hydraulic
January 2002 10 ER2001.()96(J
C ,,,,.,,. lt•tf/,1/I(Jfl Woll R-22 '-""'P'~''">n Ropon
·~•J•HJuc.toweotv fltt.hr>q 1 ''P••l·•lilou~. l<~Jd•h''''·•l rrH:.o' .. lllt•rn..r:t ,,,,,, '' ut,lonq~. were •IKh;rJ<:•J below thE: pump.ng
po11til lor moriiiOIIflQ hyrjr .tuh< IU~Ir.
Mc)nf>IJIQml'll)f I••H1 < UIJphn\j'• .,.,,!Hl •n(.horlf::d 111 'l•t.o~hly a~.·.uro~nu: 10A 1 /CJnes to provrdll OA lf:'~l"'g
(llliill.llhh01!. All OA 11\hl'.u•.:·rn,;nl ponr, "'':If: P•J:,,I,G•'H;rl t'''''rl¥ <!ildl ''' lt•(l MP55 pmJ<.ers 10 p•~rm,f
'""'""·' t;p!.•l.tlll)ll ul !Ito; ·.qllf.'l.~/1' II·IUJI ,.,lillft!J Wt11t ll•o: tAl",'• I'·''~-''' illti,JIIIJII I.'QIIIJlfiiiHlf IJUIIIog 1111.'
tnflahon procer.r.
l he MP ca:.tng r:.ornponentr. were s~:~t out tn ~.,,.q,rnr1ce accr.r(Jtng to ltte MP casmg tnstallahon tog on
111c;kr. noar the borohole A:; an ;ud tn conltrnuny the proper :;equence ot componenTs. oae-h castng lengtrl
waf, numbered"' orcJEH. t~gtnntng wtlh the lowermost The approprrate MP System® coupl.ng was
i1!1acl1od to eact1 pooce ol MP casmg Magnettr. locatton coltars wure anached 2.5 fl below lhe
rnca:>urnmcnl ports m each of the pnmary monolormg zone!:. and 2 5 It below MP Couphng No· t &8 near
the top of the well.
Tho length of cnch MP c a5mg M~chon was rnea5ured wtlh a ::.teellape lo conftrm nom1naltengths. and
me data were entered on the held copy of the MP cw:.1nq rnstallalton log. Each castng component was
vtsually lnt;pectod. an<l sertal numbers for each packer. measurement port coupling. and pumpsng port
c;oupltng were rE-Corded on the held copy of the MP castng tnstallahon log.
The MP cas•ng components were lowered tnlo the welltn sequence. Crews ~,;sed a Smeal work-overng
provtded l>y tho L•boratory Each casmg JOirtl was tested wtth a mtnunum tnlernal pressure of 300 pounds
por square tnch for one mmute to c.:onftrm hydraultc seals. Deton1zed water was used for the JOtnt tests. A
record of each successful JOtnt lest and the placement of each casing component IS on the field copy of
the MP ca:;tng installatton log_ The suspended weight of the MP casing components was monitored
dunng loweung to conftrm that operatmg lim1ts of the MP System castng components were not exceeded.
lowering of the MP casing to the target position was successfully completed on December 6. 2000.
Atter the casing was lowered into the borehole. the water levelmside the MP casing was left at a depth of
1227 ft bgs to conftrm hydraulic tntegnty of the casing. The open-hole water level was 947.3 ft bgs. With
th1s diHerential pressure acting on the MP casing stnng. the water level inside the MP casing was stable
over a measurement penod of 30 min, and the measured pressures were stable. The test indicated that
the MP casing was watertight.
After the components were lowered into the well and the hydraulic mtegrity of the MP casing had been
confirmed. the MP casing string was positioned as shown in Appcndtx D. The MP packers were snflated
on Decem tier 9 and 1 0, 2000, using deionized water. The packers were inflated in sequence beginning
with the lowermost. All of the packers were inflated successfully, and QA tests showed that all of the
packer valves were closed and sealed.
Westbay'srM standard procedure for destressing the MP casing was used after all of the packers had
been inflated. The top MP55 casing was cut and trimmed to suit the final configuration of the wellhead
assembly, and the MP top completion was installed. The fmalload al the top of the MP casing was 400 lb.
A sketch of the as-built top of the MP casing and final positions of the MP well components are shown in
Appendix D. A summary of depth infonnation for key MP well components is shown on Table 8.0-1.
After packer tnflation was completed, fluid pressures were measured at each measurement port. The fluid
pressure profile measurements were taken on December 1 1. 2000. At that time. the in-situ formation
pressures may not have recovered from the preinstallation and installation activities. Longer-term
monitonng may be reqwred to establish representative llutd pressures.
ER200 1·0960 11 January 2002
\
r~--- ---~
r
~
! i
-,...,
~ ...
i
Table a.o-1 Depths of Key Items Installed During R·22 MP55 Completion
I I Screen Sand Pack l MP Casing Packer Nominal Packer ; Magnetic
· Zone Interval• lnterva .. No. (from Peeker Serial No. Posrtionb ! CoHar Depth
No. (ft) (ft) MPLog) No. (0612) (ft~ I (ft_) -
OA-1 124 ; 447.0
...------------------------, i Pumping : ·
i Port Depth!) : Por1
I '"' I (ft) I Name --- ~~~ ~ ' ' '' ~ I QA-2 ,
123 205 454.7 I r--
1 --r
.._ ____ OA-2 83 ' None
I 842.7 ; ._ . t-I I I 82 I 2 ! 215 852.9
-+-----~~----- - . --·- -------·
-+---------~-QA-1 . .
·~----····· -.--- ~ ------ --· -----~
-------!.;~~--+---+ I -r- ----r-~1-- I ' 81 I t----;-;----+----------L--~~~----1- ---~-57_~----f-:-----L--.. ~----f--8~-+-~--+---~~7 __ j __ s6~ ~- ___ • ___________ .•
1 Zone 1 I 872.3 to j 860 to 1 78 i ; • · 879 6 877 1
I 'I 914.2 I 920 l i I : ! I r--------+----------t------.--..,.------------- ---•---··· I I I ! 75 : i ' 889 6 I I ' , __________ --+--- --. ---·· ---- ---------· ~
I ; ' 74 ! I :
~ ______ j_ ______ -- _; ______ .-1-~i~--~~~~~=--~ ~---~=-=--~-~- __ -. : I I i 72 ! 4 ; 212 : 928 4 ,.. ~ ---------+-- ---.--t- --- _____ , ____________ ·- ----- t -----·-- ____ ..,. _____ ---- .....
: SQA2 ; : i 71 : I ' ~---------1.-- --~ ··--·- --+----- -- ... ~ -···- --- . ~-l-- --- ----~-- .... _ ........ ! ..
l ; . : 70 ' 5 ; 2, 4 ' 938 2 , ______ ..... •. L- .. ---·-- --- ---·- -. -- --- · .. , - · ---- ----·t -- · - -- • --
! Zone 2 : 947 to , 937 to ; 67 I ,
! . ' t-------··-·-t-· -··-------- ·• : 988.9 : 1001 i 66 i ; ;
, I , t-·--· --- .. ---- ~-- .... ·- --~ -- ..... . -t
I 1 i I 65 i ! : ~-----·------+ ----·- ... -t ---------. -----+--- ------+--- -----+--- ------ - --. : i , ! 63 I s ! 2o3 I 99 3 s
~- LaA2·-t-----·-t·-------·t ---62---r-- --;------------·T ------ . ~. ! -·- --t------·-·t·----~·t·-------+-----·---t-··-··-. -- ....... I ' L 36 ' 7 I 188 ! 125-4 2 ;..____ ---------, --..----- ---- --·-•------·· ~----·-···--·-· --+
l 59~--t-------+--------· --~~--t---t----·- ·--l ... --- ... ---· I l I I 34 I 8 ! 220 I 1264 , •---·-- ----· ------- ..... t.... .. ---L-----.L.---····--- "----- .. ·-
S-Q.\_1
SCA'
MP1V ~'.:><,.-ltd<_~::~
sa ..-.p.~r.;.
90:'. \lP~:.
912 ~ ""~··
918, MP•~
-· 93::; s .... _;.:.._
96S 3 %~8 v~·-!,
%"- Pi':
9'3 .I ~.~:-:-
99S 0 t !~.\.; - ....
l :."5.8 7
Q ~ :.;
~ .. tl:
-~ :::l
,;E ;~
:~
'"" f\l \)
~ ~ 0 :':!
::J ~
'& ~
~ a -~
-(,.)
fi; :I :s -< 1\.)
~
Table 8.0.1 (continued) -
---I I
Screen Sand Pick MPCasing Peeker Nominal Pecbr Magnetic lleaurement P\lmfJing ! I I
Zone Interval• Jntervaf No.(from Peeker Serial No. Positionb Coll11 Depth Port Depthb POft Depthb I Port I I
No. (ft) (ft) MPLog) No. (0612) (ft) (It} (ft) (ft.) Marne ' Commellda
MP3A! --
Zone 3 1272.2 1260.3 to 32 I 1273.5 I
to 1290.9 i -- i PP3 :
---~
31 1276.0
I 12789
1278.9 I ---- ·-·------ ..
30 1284.5 I
MP3B ;
I -+----------~
29 9 216 1288.2 I ! !
I ····-.L --- - -- -----.
LOA3 28 1292.7 I i LOAJ ! ·---
20 10 221 1358.8 ; ____ ,. ___
SOA4 19 1363.3 I SOA4
I
~
18 11 207 1308.6 I
r ----
Zone4 1376.2 1366.3 to 16 1380.5 1378.0
--+:---+---- ---~ jMP4A !
to 1394.9 15 I
I 1383.4 ! PP4 i
1384.9
I f I --··· ······-----
f:QA4 1
14 1389.1 ! MP4B i
13 12 210 1392.8 I :
I l
-··-·
12 1397.3 l LQA4 :
' -t------------· ~
7 13 208 1428.9 : ! '
-
I I SOAS! .
SOAS 6 1433.4 .,
5 14 206 1438.8 - --·--
--~
ZoneS 1447.3 1435.3 to 3 1450.7 1448.2 l I MPSA i
to 1478.0
---·---~
2 1453.6 PP5
l 1452.3
I
1 l 1459.2 i MPSB -
Note: QA iS l'juallty assurance: SOA is short Quality assurance; LOA is long quality assurance: ~P IS measurement 1)011: and PP cs pumping po!1
a Backfill matel1als are not AS BUlL T.
bAn depths of MP System easing components ara the depth to the top of the respective coupling.
. -"" -- - -· . -····
'~
,Q '~ ;t.; :Q ;~
~~ in> :~ ,g ~~ 1::::: j:;o '~ I(') ~c
i~ \iii :g i::l ':n ~~ !g
A plot of the pinzometric levels tn all zones. 1nclud1ng OA Lonon. ba!;(t<J on tho O•~ceml>ftf 11 P'•M~ measurements. was exami.1ed lc conf1rm propE'' cp(:rlllJOn 1,)1 ttlo m(jflf>IJr(Jrn,,nt porttt and at~ a <:hoet<. on the pres~mce of annulus soals b&lw<len ad1acertt morutor•ng zomm Allttl(l rruJUtltJr~mtJnt porta opor.,_, normally. EaM of the packers below tl)e open·tloiEI water IPvel ~>'•oJ5 MJppor11ng n dttfcrentmJ hydv..,; pressure, indicating the presence ol packer sea.ls.
9.0 GEODETIC SURVEY OF COMPLETED WELL
Regional groundwater characterizati'on well R·22 was geographic<.~lly &urveyed tJslng the Gklbal Positioning System (GPS) on January 9, 2001. Transmitted s1gnals from elgh1&atollllea were avarlable through most of the survey. A Trimble 4000 SSE dual-frequency base receiver was Ht up and lnift8lled over control monument A5402 in T A· 54 for conduct of the roal·time kinematic survey. Coordinate vMin for the control were from the 1992/1993 GPS Survey e:;;tablishing the LANL control ~- The coordinate values are published in the LANL Survey Monument Network Manual. and the monument11111e certified to have been placed in conformance with standards and specifications for Order 2·1 surveys 01 greater. The datum for the control network is North America Datum of 1983 (NA0-83). Aesuftl818 summarized in Table 9.0-1. X andY coordinates are g1ven as New Mexico state plane coord!natn.
T~tble 9.0-1 Geodetic Da!a for Well R-22
,....._ __ De_s_crf_p_tl_on ___ f-· ~~=-E~a-st_ -__ -T--N-- ~-- 1 Brass cap in R-22 pad 1645324.4 -n~7571~~- 6650.5 ~~opo~plateoncasing _ 1645326.9 1757111.8 166522
I._ _r o_p_o_f_c_o_na_r_o_n_ca_si __ ng=---. .......... _1_6 __ 45_.3_2_6_. 9 ___ -- -1757111 ~=16652. 7- J
PART II: ANALYSES AND INTERPRETATIONS
10.0 GEOLOGY
The placement of drill hole R-22, in the east-central portion of the Laboratory, is shown in Fcgure 1 0.0.1. This location, at the eastern edge of waste d1::posal areas within T A-54, is important for defining the stratigraphy at depth where little prior information was available beyond the reach of relatively shallow boreholes within TA-54. Figure 10.0-1 also shows a line-of-sp.ction between drill holes R-19, PM-2. R-22, and an outcrop in White Rock Canyon described by Dethier (1997, 49843). This line-of-section (Ftgure 10.0-2) is discussed in Section 16 at the end of this report. A low cinder mound, remnant of a tholeiitic volcanic vent in the Cerros del Rio volcanic field, is -1.5 km southeast of R-22 and just west of White Rock.
Geologic units encountered in R-22 consist of, in descending order: ash flows of the Tshirege Member ol the Bandelier Tuff; ash-flow tuffs of the Otowi Member of the Bandelier Tuff including the basal Guaje Pumice Bed; lavas, cinder units, lnterflow units, and subflow deposits of the Cerros del Rio volcanic fteld; an upper sequence of fanglomerate deposits of the Puye Formation; an older basalt; and a lower sequence of fanglomerate deposits of the Puye Formation. Depths and elevations of the contacts between these units are shown in Figures 10.0-3 and 10.0-4. with a comparison to the predicted stratigraphy based on the 3-D Geologic Model available at the tirne drilling began In Figure 10.0-3. The
January 2002 14 ER200 f -0960
'"' 1:01 nol<aiJIO 'htft·rt,ru.u !Jr!l ,..,e,_;n tloo..: l;lf,drc.lorJ ··.lll<l w, · droll•:d :-tr o~ll~jr aphy 1S the grentor ttu<.;l• ness of the
Cmros del Aro vole a nrc :,f,quonce. wh1ch plar.e~; tile re~.J1onal w<rter table and the upper ·-300ft ot reg1onal
satwatron wrth·n 1t1e Cerro:. llel nro rattler than 1n Puye li:ln(~lomerates The e)(cepl1onal tt1ickness and
vrHroty ol Cmrot; <lnl Rro 'o~vas ill R-22 prov1cJf..'S dll r)ppc;rlunlty for placmg the d1ff£!rent lavas olthe Cerros
cJul R1o rnto !.lratryr;lphrc c:onlel<'t Much of the det;uled de::.u1pt1on 111 thrs ~ect1on focuses on the Cerros
dol R10 lavrt5 IJt:C<wse or !h1:> opportunrty. wtuch IS 1rnportant lor volcan1c strat1graph1c correlation wrthm
thf' LANL 3-0 Geologrc Model Other notable drscove11es at R-22 1nclude the absence of Puye Formatron
.1~101 rrver gravois n otavl) and the nbsence of Santn Fe GrfJup &ecliments w1thrn the depth dnlled. These
.1b:.ences are rrnponant new 1nlormatron lor the LANL 3·0 Geolog1c Model. and the nature of the
5edrments that occur 1n place of these gravels and Santu Fe Group sed1ments is part of the analysis
provrdedm thrs report. A summary of un1t characterrst1cs IS g1ven 1n the following 5ect1ons. and a lithologic
log IS provtded rn Appendrx C.
p AJarrtoc.
- - anyon --.. '-
R-19
N
1
3km
10.000 ft
Figure 10.0.1. Map showing the location of drill hole R-22 relative to the laboratory boundary, the
town of White Rock, and the tholeiitic volcanic center west of White Rock. The line
of-section from R-19 to PM-2, through R-22 to the rim of White Rock Canyon
(Dethler 1997, 49843) corresponds to Figure 10.0-2.
ER2001-0960 15 January 2002
)
)
~
i -< ~ ~
0)
"" ~ 8 -I
II , a ff u r. , I I i I I
elevation ( ft) R-19
---?000
6800
6600
6400
6200
f)(lQQ
5300 1
5600 i 5400 1
I ~})00
-0-bl-~ PM-2
Oct ------------- ----
------- Obt
Obo Obo re• ----------- _______ __;;:----------~ ·"'-·Rock Tb4 --------- ~ ---=:::::::::::~th·e• tgor
___ Tb4 __.- Tb4 ~ - l
- ~- === ------== __ ---- ~edtrnent __...- ---
Tpf -~- - Tb4
IN<II /~ -" ""'"' '" PM 2 '"'-m'"" _ t>~!Otl" -~---. ptrrnptnq
· ---- Wrl!Pr !ilt>l" Tb4
T P~ ~ Tb4 --<_ ...-------~ ~ "'-- ~ .. - -. -------- ------- ~~~ .. -· ..._~ ~-~J
......._ ---·-
R-22 White
To pun•.ccou~. Tt,f ---=- r~,,
- i ;J
Jlllotdr>•t1i-1<.il·:
T~~' -: - - If"}
T~f·'
•,noo
t.P,()() lfi.iiiil olrlcr b<J<;a:t
4600 TsP
I ' 14---- _.:_-' kn1 I ---~
i
4400 ~lder hnsall
TsP
- - - TO
Fl•gure10.o-2. Cross-section through R·22 corresponding to the ltM-Of·MCtion shown In Figure 10.o-1. Symbols vMd
represent the Tshlrege Member of the Bandellef Tuff (Qbt). Cerro Toledo deposits (Oct). the Otowi~
of the Bandelier Tuff (Qbo), Puye FonNtion fang4ometatet (Tpf). • pumlctous unit Included wtthin 1M P\rte
(Tp pumJc.ous), ultll river gmtets of the Puye Formation (•Totavt. • Tpt). Cenos ctet Rio~ roc.ka
(Tb4), Md s.nta Fe Group Mdlmefttl (Taf).
.r"· 1
9 :: 2 ~
~ 0 ::)
~ :-p ~.3
f
~
l
.J r
200
300
400
500 ........ E
! 600
'700
~-------i 487
Puye fanglomerates
1-----....f1251 Totavi
._-----i1291 gravels
Santa Fe Group
sediments
Tsh1rege fiSh flows
fanglomerates,
volcanic sandstones,
and other sandstones
Figure 10.D-3. The stratigraphy predicted prior to drilling ()f .R-22 compared with the n-drllled
stra11graphy
ER2001-0960 17 January 2002
)
"·
)
;·
I
r,
f.
> ;
elevation depth
(ftl 0 (f\) ....-·-------, ~ Obt2
f . ~- -·- ~·. - "~
660
6500
64uo
6300
400
6200
6100
900
5700
56
1100
5500
1200
500
ltlt)lf!fll~
450 480
tholeiitic
. 893 ·-· high Gd tholeiitA!I
958 -
0 gamma 120 50 Si02
.. (!(J.me<ll
II ll<!flel
I &eMil
Figure 1 0.0-4. Detailed stratigraphy at R-22, comparing the natural gamma signal obtained .. R-22 and the silica content, 11 ontium co,ntent, and Mgt [cation ratio of
1!7 Mg/(Mg+Fe)] of analyzed sam~ les. Polnttsln the SIO~, Sr, and Mgt columne show
Janu.ry2002
the locations of analyzed samples In Tables 10.3-1, 10.3-2, and 10.3-3. Arrowa demarcate the four major subdivisions of the Cerros del Rio.
18 ER200T .09Il!JO
Do!>CIIplton:; of unolog•c: ur11tl> are ba!:.(ld on e1 ;trn1n<at1on ol r.utlln<,f>. fJCOphySICallogs tmcludtng vrdeo
loCJSL and laboratory N<HTIInatron oluorchole tr,al<!rtals Nv cure was collcctej at R-22, but cu".ngs were
collected by revmse CtrCUiillton. fTllfltfTll/lng admtxture of rnil\tHials from upper portrons of the borehole.
Cutt1ngs ~arnplcs wore ,,r,ed to gatt1er petrographrc. rruner<tlog•c. and geochemrt:al data from umts
b(Jneattlthe Bc:mdeher Tutf PetrographiC data wort~ obta1ned boltt by brnocular mtc..roscope exammatron
of cuthngs at the stto and by petrographrc mrcroscope u~rng thin sectrons prepared lrom representative
cuttings samples (Appendtx E). M1nernlogic data were obta.ned by quant1tatrve x-ray dillractron (OXAO).
Geochemtcal data were collected from cuttings samples by x-ray fluorescence (XRF). All of these data
prov1de a basts lor strahgraphrc correlatiOn. The mineralog•c and geochem•-::al data provide information
about soluble glass content and composit1on, clay occurrences. and mtneralogic controls of ox1dation
potential [Eh} and pH.
F1gures that •llushate the as-drilled stratigraphy (Figures 1 0.0·4 and 10 0-5) also show the locations of
screened intervals (Westbay1
"" MP55 system) 111 the completed wei; at R-22 in relat1on to the mtervals
sampled tor l!tholog1c analysis. The yeolog1c samples at screen locations are particularly Important lor
relat1ng geochem1stry, petrology mineralogy. and sedimentology to the interpretation of water samples
collected from those screened i'ltervals. The preliminary data for evaluating these relations are provided
1n this report. "
10.1 Ash Flows of the Tshirege Member of the Bandelier Tuff (0· to 128-Ft Depth)
The Tsh•rege ash flows at the Laboratory have been subdivided into lour cooling units on the basis of
sur1ace mappmg (8rol<ton and Reneau 1995. 49726). Two of these cooling units, Obt 2 and Obt 1v/1g,
are present at Mesita del Buey where R-22 was drilled. The drilling conducted at A-22 was very effective
at powdering the ash matrix and pumices of the Tsh1rege. leav1ng concentrations of intermediate
composition lava lithic inclusions and providmg only limited strat1graphic information concerning the host
tuft However, outcrop exposures and extensive shallow conng at T A-54 show that Tshirege flow units
Obt 2, Obt 1v. and Obt 1g are all present at this site. Because of the poor preservation of ash and pumice
1n cu"ings, identification of the Obt 2/Qbt 1v contact was not possible lrom the samples produced at A-22;
however, outcrop data and drill cores nearby at T A-54 indicate that this contact is at-40ft depth. The
identification of the devitnfled to v1tric transit ion at Qbt 1 v/Obt 1 g is more readily determined from cuttings
and is at -77 .ft depth in A-22.
Before R-22 was drilled. rt was el<pected that thm occurrences of the Tsankawi Pumice Bed and of Cerro
Toledo sediments would be encountered. The cuttings produced no evidence of either, although
thicknesses of a few inches of one or both may be present.
10.2 Ash Flows and Guaje Pumice Bed of the Otowi Member of the Bandelier Tuff (128- to 179-Ft
Depth and 179- to 190-Ft Depth)
Otowi Member ash-flow tutfs are 51 It thick at R-22. These vitnc ash-flow lulls have a natural gamma
signal that characteristically increases with depth (Figure 1 0.0-4). A similar increase with depth occurs in
the Tshirege Member. and the drop in natural gamma signal near 128-ft depth marks the transition
between these two members of the Bandelier Tuff. The Guaje Pumice Bed is placed at the abrupt rise in
the natural gamma signal at 179-lt depth. (See F1gure 10.0-4). Data from the Elemental Capture Survey
(ECS) geophysical log (Appendix G) indicate a rise in hydrogen content w1thin the Guaje Pumice Bed,
suggesting increased moisture content (although perched water was not detected during drilling). This
increase in water content is not associated with evidence of clay alteration, indicating the possibility of
increased water-bearing pore space within the porous pumrce beds.
ER2001·0960 19 January 2002
~ :J c: Ill
-< 1\l c 2
N 0
, ~ -~
f
I I elevation depth
(ft) (ft) 5500 1150 Cerros del Rio
lavas 1173~
upper Puye
5400+ 1250+ lfanglomerates
5350
5300
I 13oot I
T ~1338 1350 -t- I older
5250! 1400
5200 + 1450~
5150 _._ 1500 I
basalt
--1406
lower Puye
fanglomerates
TO= 1489
l 0
\ I ~
I
1
gamma 0 (0-120 cps)
,f
\
I I
/p f 0
9
\
t 6
0 1 5 15 25 Rb/Sr clay (0-0 2) (0-30 wt%)
r I
\I I !
b I (PO g:,1SSI-+j
I I I i
I c •. ~ 1
: I I , i i
I q : s ' \ i \ i \ ; \
I ? ! ~ I / I \ _j I 4 4' I I j 6 0 0 J 0 6
glass arteratJOn
index (0-0 7)
r,;tJo cl Quart; to all Slhc.a
mu~ral!.
10-, l
Figure 1 o.o-5. Lower •tratlgraphlc -.quence at R·22 ttnCOmpeuint the upper ~ q,tg~on,..-.. t:M oldlf bMaJt. aM
the lower Puye fanglomeratn. The natural gamma..,._, •• plotted along with AbiSr ratioa (trotn Tabin
10.3-1and 10.3-2). clay conttHtt, glea altenttion Jnde1(deyl(gtaa • dey) ffom T_.. 10.W). Md ...-.o of
quartz to d lllloa miner ... (.,_.quertz + triclymltl+ orietlllbllfte) ffoM T .... 10-W~
(') ;:y :!>
·:::: ·I'; -~
;;:; ;::,
lg ;:,
~ <b
·::::: ll "-> ~
() 0 ::)
.0::
"" g ll ":> '::' 0 ::}
10.3 Ccmo& dol Rio Sur1ac:e So11. Lnvna. Ctn1lcr Unllti. tnlcr11ow Unlta, nnd Subflow Depoaita
of lhe Cerro• dt-1 Rio Volcanic Field n90· to 1173·Ft Depth)
·;qrf.tc.t• !.Ool wolti!J.t'.,tllu ·I•·IIII<J' i;I'J,I:. r.JrHh!r ,,, '"""''"'"''''• ''''"r1'""" ru1JI1Ie or~.,''"'' ICJrtl!~ a'ld
•.utJII(J·W <J!!pu:.•tr, ollltfl :.: ... rr,,:, <11'1 n.o JIJir .• HII( '"'''' Wl!fl.l f:ll<.f)linll•rt:(llfl lhc lf11er·,al fr<>m Il-l() 10 1173-ft
oltJpth Bt'C<Iut.o o! htJ'''"'''" :.tatJtil!y prcJtJI!)rll~ l.'fH.'JIJillf:!!:tJ 111 ltH) 1Jpp•H p;trt of the Cer•os o'j(!l RIO l.:was.
r ;)!,1110 w.u. c:arrtud hum It••: uppN Cerro:; (Jet f11<JIO TD C:t:.•ng Nar, !Jroelly retracted to 5t0 ft depth on
Ot lobt!l 4. 2000. lu allo~ vHl~o ;u1.1ly:.•r• ot lt)O o~,,,n t.c,H:holo Howevr~r. large h:;~urus and loose
!)()lll<.lm:. were f.~n(.(.>lJfllf,rm.l at 7'29 11 on the upper part of " o.H.IhC lava :.;•,r~es The camera wa:; not run
twtow th1s doplh tmcause of the n~;k of toot toss or <larnage T hur, tile avilllabte open borehole v1000 tor
H-22 tS hrn1ted to the mlf.ll',ill frorn 510 to 729 It Cutttngr. aml borctlolf.l !Jeophys•cs .natural g<1mma.
clen:;tty. and II*'H>Ch~!rntcal togs) w~re IJ!.Od to llehno thr~ tc,ur rnnJOr ~~ut>diVI~,oons ot the Cerros del Ato that
.tre rnaO..ed by arrows 1n <.olumn ~of Ftguro 10 0-4
10.3.1 Cerroa del Rio .Alkalic to Tholeiitic lavas (190- to 480-Ft Depth)
The upper 290 II of Cerror. del R10 lavas at R-22 1S a sequ<:nce that pa:;ses from alkalic to tholenttc
r:ompos1t1on from t>otlom to top !Fcgurc 10 0·4) Oetntus. ~,urlace sotl. and some pedogenK. ('arbonate
were r(!turned w1th the cutttngs lrom 190· to 207-tt depth. The lavas below this surface rr3tenal are
repre:;1mtcd by cuntngs samples at 217· to 222·f1 depth. 377· to 382·ft depth, 427- to 432-ft depth, and
4 72· to 4 77 -It depth (columns 1 through 4 of Table 10.3-1). The upper three samples are tholeiitic and
rt~lattvely constant m composition and petrographiC character. These tholeiites are olivine-porphyritiC with
· 3°o to 4°o ohv1ne phenocrysts and w1th subophlt1c clinopyroxene lcltnopyroxenes that partially encase
lath-shaped feldspar crystals). The lowest sample 1s alkalic. w1th a much hinl:\er strontium (SrJ content
1 1045 vs. 405 to 424 ppm Sr. Table 10 3·1) and more abundant oltvme phenocrysts (- 1 0%). The oltvine
nch alkalic basalt at 472- to 477-ft depth 1ncludes both lava and basaltic cinder, indicating prox1m1ty to a
vent The systematiC decrease m magnesium number (Mgn) {cahon ratio of Mg/(Mg +Fe)] from bottom to
top 1n thtS sequence (Ftgure 10 0·4) sugg~sts that fract1onal crystalhzation of olivine may relate the lavas
of thi~ series.
The occurrence of th1s upper alkalic to thole1it1c eruption senes IS common to the Cerros del Rto lava
stratigraphy in many dnll hOles of the eastern Laboratory (R-9. R- 12. R- 15, and R-31). Correlat:on of
these lavas between drill holes may extend this thick upper lava series across broad areas of the
Laboratory. but although such correlation is possible, more <lata are needed to test this possibility. There
1s a notable compositional similarity between the upj.~i:!r tholeiites at R-22 and an analyzed sample from
the volcantc vent near White Rock. -1 5 km to the southeast. (See Figure 10.0-1 and compare
WoldeGabriel et al (1997. 54427]. thetr sample 93-13. with columns 1-3 of Table 10.3-1 in thrs report.)
10.3.2 Cerros del Rio Basaltic lavas and Cinder (480- to 580-Ft Depth) above a Sediment and
Soli Horizon (580- to 600-Ft Depth)
. Samples from 480· to 600-ft depth at A·22 are complex .. including a zone with basaltic cinder from JBO- to
548·ft depth and mterbedded basaltic and dacitic lavas and posstble sediments from 548- to 580-ft depth.
The samples from 580- to 600-lt depth include sediments and so1ls with little evidence ollava flows. A
basal calcrete from this sequence was also sampled for analysis.
ER2001-0960 21 January 2002
CdR
1 nblc 10 J·l
xnr AnrslyM!h oil fllfll'll ""ITI n '}")
3
. "• 4..J
~ ~ ~ ~ .2 I.J
CdR CdR CdR
·I~! f) 1 -1~1 I) 1
\ i'l
1', 01'
() 1l
6 5:' 1:160
·' 17 887
4 oa 2 74
, 61 1 3:J
0 S1
034
'l7 91
203
:?69
175
84
29
624
67.8
CdR
1 70
., 1:14
0 16
1 y;
0 ~.(J
G 01
98 40
192
237
i84
90
25
685
?.4
186
28
648
CdR
I P.,j
,_ 01·
~~
3 68
3 70
338
(J 26
1 .17
97 72
54
23
e
7 67
7 13
5 73
3 03
, ,, I)JO
·0 04
98 75
187
:?39
v ~~ ,._ J)
~~
c 07
1 b4
372
420
0~
030
)9()4
5S
23
10
') , 7
f} &~
6 B!l
J 19
, &1
011
-o 23
9899
200 -· ·-~ - -~ 229
19 101 <12 106
4El
52
656
-· .,.... _. .. 55 96 87
21 -·--- ·-··- ... --- ------ ------~
! 48 21 . - -~ ---- -----·-- -- --·- .. ··- ---- .
425 : 647 4JO ·--- --·· ----+---- ----+----------.--------~
9 24 23 - ··--·-··-·-- ---------··- _..,._ --~ 19~ 149 176 152 ! 33
136/3
------ ---- ------ --- _____ _.,. .?8 23 :?1
434 1354 .;JO ---- --· - ...... . . --- _ ___.,__- -------- -···-·
Note. Valoe!> reported in percent or pa~ per n11!loon by Wf'><Jhl Ana\;1• .,1• ·'""'~· ::•., • a:e S10_,. 0 .,. T10,. 0 01. AlP,. 0 2 ~e,O,.
0.06:Mn0.0.01;Mg0.0.08:Ca0 O.t.Na.-OOt.K . .O C:OS.P.0.01;1 v ···,. C.• 8 Nl. 10 Zr. '2 R'i:l.S Sr.25 ,. 6 Zr
30. Nb. 7: and Ba. 50.
January 2002 22 E R200! -0960
Table 10.3-t (c.ontlnU4td)
,, ,.
n 'j 'j
H U
The zone of bar.allic c1nder at 480 to 548ft IS represented by a sample from 507· to 512-ft depth that •ncludes vitric basaltiC c1ndor that Is moderately alkalic (624 ppm Sr; column 5 on Table 10.3·1). Crystals
E R200 1·0960 23 • January 2002
l
1n the cinder InClude very lnr~ orrvu•u pt..,,ncJ<:.ry~»lt~ ''~i~ ''·' ;• r~tll\ 11; "'''~' ilti(l VH.IOfl P'40'!-.~ ~1111'.-. 1,.,,., high oliv1ne content corrc::~pon<l:. writ• til() tu{jt>'lt! '·~'J•' l.,rr., ·"'J C•·m ,-:; .,.,, ""· 'l>~ .,.. A 1'2 1,. ... ~.
10.0·4). ·rrnc.o& ol f'r•JCllnlbruan qu;Ht::u .• :lf" p••·:,c:•nt •lf"l ""'; ,.,,.,,~,M•I ,.Oliff ,,.,.,;.fttt·>il {jl' ,.~ ,. • .,
gravel&.
The vaned basaltic und dacrlic lttvilli and po•.,IAI''' : .. Nl•"•N't;,. lrl·Kdl tt~1 tm:.a!IK.. (.~t'll(krf "'~ ,~.,..........~ 1Pf
a s.ample trom 543 to 546ft. 1 he t111n :.e<hon of ·~)~r•.•:w'ILJ!I·"J 'la.o:.t.r, ,,,,~, !hit. t~~ '""''"'II(~ •
porphyritic olivine ba~alt poo,., oiNme) {r(l'prcM!fiiO<.ltn cohJmn 6 of 1 11l)k) 10 3· 'I end li v""""J d Orlr'.IIW:
samples. including both holocryslallrnc and v•IIK llltH..I(JQ~l', T h•• <l•tcrt.c ltfho~ trV.iude btJllh
clinopyroxene-orthopyroxene porphyritiC and <:ltnopyro~N•t: arnp~HtV.)k! I:.Orpfl'f'ltl< ~
The 20·ft sedlmenV60il horizon at 560· to 600·11 depth may trtr.tuoo m01o !han ()flO~.~ .....
calcrete at the base ot this ~uence t!>eloctcd t1JI1•nQ6 lr•Jm ~H8· to 603·ft ~M) 'II • Pf~-.I'\IICJIC,_,
ol soil development and was therelore &elecl&d tor ana1y~tb Onla lor lhi• £.Qfl W""PW lt'dt.ldt ~
analysis (column 1. Table 10.3·2). mtneralogt<: nnalyM& b•f ,..,a., o•lkiKtl(j()IXAO) (f'OW 1, l._ t().).l)
and petrographic analysts (Appendix E) The cherntea1 nnd mtnt~rulog!IC 'e.ntutota of 1n1t t*,... ~
high CaO and high loss on ignition (lOll that matcn •ts hr11h r.fd(:tte c-onlftnt of 61 ~ ... n.,.,. • a MIOOIIttll
clay content (8%) in the calcrete and no evtdence ot ped<,gentc ~~•hca ~opal) lfl~.;lthtt XRO Of Ptff«l9'~
analysis. Petrographically. the calcrete torms th;ck (;·2 mm) lanunatno r•rvJs ...,,th oorrdal ~--c~
basalt clasts. The thickness, struc1ure. and caute abundance •ndiCate ave~ mnture ~ lotmocJ., • <Jfy
environment. Calcrete can have hydrogeologic srgmhcance as a bar ner to lOwnw.vd now tn IW ~
zone: in geophysical logging the ECS hydrogen measurement {Appendix Gl JS •valed from -~)'J to
600 ft, suggesting that the moisture conlent may be enha.ncj!d above tl'le bunod catoe\0 honlcn 1111
-600 h.
10.3.3 Cenoa del Rio TholeliUc/Oacitlc Bimodal Volcanic Seriea (600- to 780-Ft Dlpeh)
A sequence of 180 ft of lavas and cinder from 600- to 780·11 dep1h tncluCJes bottl ~ ancs ~
volcanic lithologies. The deposits within th•s sequence include a 63-tt thick dacite lava..,.. (fSCO. to
663-ft depth), a 37-tt thick tholeiitic cinder sequence (663 to 700 It), a very thtn series (10ft) ol dacO:
detritus (700 to 710ft), a 18-ft zone that includes both tholeiitic and daotJC hthOiogtea (710 to 728ft).
possibly detrital, and a 5(}-ft thick set of dacite lavas (728 to 780 ft).
All of the dacite samples in this 180-ft thick sequence are clinopyroxene-orthopyroxene~
porphyritic dacite with sieved and resorbed plagioclase phenocrysts. The matnx 1eX1urea in lhe dacMe
show evidence of moderate to strong flow orientation (pilotaxitic texture) of plagloda&e lathl. ~
analyses of representative dacites !rom throughout this sequence are essentially identical to eec:h om.t
(columns 7, 9, and 1 1 of Table 1 0.3· 1 ). The upper part of the lower dac•te series, from 728 down 10 al
leas~ 740ft, was found, on video examination, to contain large fissures m excess of the borehOae dtamet•
(>13 in). Borehole instability in this dacitic lava precluded rllnning the camera any deeper.
The tholeiitic component of this sequence IS represented by two samples that are also "'8fY 5lmiiar to
each othe· in composition (columns 8 and 10, Table 10.3-1) and m petrographiC character (Appencb E).
Both are olivine-porphyritic basalts with subophitic clinopyroxene. although the sample lrom !he thOfenC;
cinder deposit at 683 to 686 ft has a greater abundance ot qlass rotative to crystalline constituerlb.
The occurrence of tholeiitic cinder indicates a source ventlhat is not far away trom the R·22 dr\1 $de
Nearby volcanic sources are indicated tor this bimodaltholerrhctdacrllc sequence at 600- 10 780-ft CJee)tt\.
for the overlying tephra-bearing sequence at 480· to 580-tt depth, and tor the uppermost aJkak to
tholeiitic sequence with affinity to the volcaniC vent -1.5 km drstant. No such sources are eV\dent t~ the
thick tholeiitic sequence that lies beneath.
January 2002 24
T nblfl' 1 0.3·2
XRF Analyses of Soil and Puye Fanglomerate Sample& from R-22
. T r- .... . ··- ·- · ··- ·· ·r·· · · ·-- ·· ---·- · ··1 ·· -· - ·---
-! -R22.:412~ J R2·2.:447-. ··~ .R22-~4s2--I 2 3 +.-
Sample Numbet
t , R22·S9S·603-i soil
R22· 1188- i R22· 1273-1191 I 1278
t - ~--. I R22·1323· I 1328 l 1417 I 1452 I 1487
.!.. ..•. --· ·-······--·---1.... ··-····--···- .• L _______ _ ·-·· ---·····--- L.. .. .. _ . ·-····----··-··· .L ·- .. ·--··· --··
. XRF 0.11 (maJM tlerrwtntl}
s.o;:~- T 1950 £>432 . "65.64 T"""" G37·o·-·r·-·6·15tl-- -----62".·oo--·r··-62.29 --
: -~ .. ~ .. ~:~~-:! .... ~. 1 ? -·· ··f-·- -=~?~~: ~t--.~--~-~-~~--~~l--- .?:?.i~~~-~i-~----~~92···-~~:~.-~~0:83 = ~~~~~~89 : . ~!?.,_·.·--1- ·- -~.~.?- --- t- ~~~ ~---- ---~~--~-- ···t··. -~ 5_:_7? ___ ·-+···---~~--~~--- -----~6.18 - --~~.74 --
.. :·~~.:<?:..:·.-~----~-~-~---·-+---~~-- -~9? ______ ·-----~~---·t--- 5.16---r---- 4.46 ·--~~
~ . ~~~-~~ -~-· ~ ?_2 ___ ·-f-- ~~~-- ---~-~~----·- -___ _9_9~------1~~~-_9_:_~-- ._ ___ 0.09 ·- 0.08
:=~~t~~~=~r~~~~~~~t1~~t1~~~ ~~~~f r~t;= :_--P;Os ~:-- ---- -0~,-8---·1-~-.. v-~- ~:2• --r ~ 0 ,,4~-o:is- ---o:-3-,--------:-----o:-;o-~------b+-·--- - .. -·-- --~ --· I [--~;.~-~·-ii.*~~±. 9~~1
1
cJ=~~~o~~--~-==~~~:3 __ i__~il~: I :~~:al~~ ; XRF Oats (trscs elementl}
l v ppm -:-\o--T_-_7_9 __ +-___ 6_9_-.---l=--a7_--_~+--·-_-_a~------=~-7-6_-__ -,_-t--___ ao __ -1
HCrppm __ <_e ___ J 50 <8 --f-·-23 _____ 23 31 14
20 Ni ppm < 11 1 23 < 12 19 19 25
----+------+------+----·---f--- ---·-------·-+-----i
Zn ppm <12 __ --f ___ 6_1·---+---5_2 ___ f-- 59 ----~~-- __ 6_7 _______ 64 __ -1
Rb ppm 21 j 71 99 72 61 _60---t-----64 __ _,
Sr ppm 426 I 538 539 ---!-.. 589 689 618 643
1---;_:_-+-----t------+---- I ----e-.-----; y ppm 11 29 22 . 26 23 35 37
~-------+--------+-------~---------+---------+-------~-----------l
r----------
Zr ppm 122 199 252 265 301 269 267
f--.:....;_--+--------+·-------+------+---·---- --.. ---+-----·-f-·-----i
Nb ppm 9 16 22 27 37 24 35
t-------+----------·----·---+------+--------+--------~
-------~--------1
L Ba ppm 383 1061 1117 1064 1280 1033 1150 ~--~--~--------~--------J--·-
----~---------~-----~------~----~
Note: Values reported in percent or pans per million by weight Analyt•cal errors (2o) are Si02. 0 7; Ti~. 0.01. AI~,. 0.2; F~,.
0.06; MnO. 0.01; MgO, 0.08; CaO. 0.1; Na20. 0.1; K~. 0.05: P20~. 0.01; V, 10; Cr. 8; Nl, 10; Zn, 12; Rb, 5; Sr. 25; Y, 6; Zr,
30; Nb. 7: and Ba. 50.
a Number ranges tndteate depth ranges of cuttings in feet.
b LOI .. loss on 1gmtion; negaiiVe numbers indicate oxidation of ferrous iron during ignition.
ER200 1-0960 25 January 2002
_,
Table 10.3-3
XRD Analyses ot Samples from R-22 ...... ----·~~-1-T .. ,. --r-~ ., ~ ~ .1!, If .!! . ·e ' l ~ I :g r I >I~~': :! .. p ~I&[~
t- l ~--L ... -L-~
~ ..!2 "'
I -~ _;
Is," ,Q.
.L .... J. Calcrete (S) and bssalt (B) within Cerros del Rio
(1) R·22
a.o ~*fOT23 -T·-· ·· · r · · -- ., ·
~ 12.2 I 11C• i 598-603 s (2) R-22 598-603 8
- I - -:_· -~+o:s L. ___ j_ __
i I . -i34"1l55-.2j 4 5 ; '
j I , . .L ••... J ........ :... L
Upper Puye
(3) R-22 6.4 1.0 ·7.1f6.4 ·T1s.6 1181-1191
(4) R-22 4.0 2.0 7.2 t-.;·_-,-l"2o~i 1273-1278 I (5) R-22 17.7 2.0 4.6 1 s.o l13.6 1323-1328 _j__ --Older Basslt, Altered
r--· - I :)oTo (6) R-22 26.7 -1347-1352
~----- ---(7) R-22 16.6 - - 0.1 2.3 1377-1382
r---- -Lower Puye
I
(8) R-22 8.7 0.5 3.6 1412-1417
I (9) R-22 ,, ').3 0.5 3.2
-~-1.2 ' 5.0 .2
r----1--2.314.6
-~--~ 43.3! 3~7l-6.-5-To.7io.2-l o
~Jwy>~B_to'l~ _j 37.2 a·5_t~J.:.L-
1 -1447-1452 I (10)R·22 8.1 0.5 3.9
-r-::-: 3.0 l 7.7
1482-1487 L
r= I
-- i - 101.5
- - 100.4
- - 101.6
·- --Note: Values reported are in weight percent Analytical errors (2ol are · s•,. of the amount reported tor abundances >10"1. and
-10% of the amount reponed tor abundances < 1 O"·o Dashes 1ndocate that the phase was not detected. (Detection limits 1118
-0.1%.)
a Number ranges indicate depth ranges ol cuttings in feet
b Preliminary value.
10.3.4 Cerros del Rio Massive Tholeiitic Flow Series (780- to 1163-Ft Depth) and Flow·B~.n
Sediments (1163- to 1173-Ft Depth)
The lowest Cenos del Rio flow sequence at R-22 is an exceptionally thick (383 11) and homogenous mass
of tholeiitic basalt. This sequence is represented by five chemical analyses that are so similar they fall
within the range expected of replicate analyses from a single flow (columns 12 through 16. Table 10.3-1).
This homogeneity can be seen in Figure 10.0-4, where the gamma. Si02 , Sr, and Mg# curves through this
sequence are all essentially flat. However, the extreme thickness of this sequence, petrographic
differences between samples, presence of a thick scoria zone at 1033- to 1 063-ft depth. and occurrence
of mixed volcanic gravels at 1133- lo 1138-ft depth all indicate that this sequence is r11ildt: ~P ot r ~;!!;_;it:·
January 2002 26 ER2001-D960
Ctrilractun?atron Well R-22 Compiallon Report . .
flows !rom :;(.•veral t•ruplr')n cycle!:. Mureover. EC:·:J tJoretHJl!: loggrng ~;uggests a subset of these lavas
between 893 fllld ~58-ft rjepth wrth relatively t1rg11 gadolrr11um (Gd) and hence higher lanthanide-element
content than the other !llole!ltes of the sequence Nevertheless. occurrence of such a thick and
homogeneous sequenct:. rs unusual in tt-oe Cerros del R1o -,olcanrc system and contrasts greatly w1th the
ontertalated ltl(Jier•ll<:.. alkalic. ano dacrtrc Villl<lrlls at hryt1er lr·vc:ls wrthrn tne Cerros del Rio at R-22.
Petrographrcally. these chemrcally homog.,neous tholeiites are all ollvrne-porphyritlc wrth subopt.rtic
clinopyroxene. Jllhough glass abuntlancos and ptlencocryst srzes ''ary (Appendix E). The most drstinctive
ot the samples IS !rom lhe basaltrc sediments at the bQttom of the sequence (sample at 1 163· to 1 168-ft
depth), where essentially all olivtne has been replace<l by yellow to yellow-brown clay, and vesicles are
lrlled w•th coarse catc1te. Th1s type of alteration indicates tnat the t~rst tholeiite flows of the sequence were
emplaced over wet sediments. -I-re higher Fe;-0-JFeO ratio rn this ::;ample, compared with the unaltered
tholeiites, IS evidence of oxrdation along with the clay alteratiOn, although other ch~mical parameters (with
the poss•ble exception of slight Sr loss) are essentiaB·,. unchanged. (Compare column 16 with columns 12
through 1 5 in Table 1 0.3·,.) Extensive clay alter at1on in the flow-base sediments at 11 63- to 1 173-ft depth
also suggests palagonitic alteration of basaltic scoria.
10.4 Upper Puye Fanglomerate& (1173· to 1338-Ft Depth)
The Puye Formation occurs as two fanglomerate sequences at R-22-an upper sequence from 1173- to
1338-tt depth, and a lower sequence from 1406-tt depth to TO at 1489 ft. Between these two sequences
is a heavily clay-altered basalt that is at present considered to be of Miocene age, based on similarities to
another basalt at the bo"om of drill hole R-9 that has been radiometrically dated at -8.5-8.6 mega annum
(Ma). (See Section 1 0.5. below.) If the basalt between the two Puye sequences at R-22 is indeed that old,
then the duration of fanglomerate deposition from volcanic highlands to the west must extend to times
that predate Tschicoma volcanism and may represent deposits of volcanic detritus from the Keres
volcanic cycle.
Figure 10.0·5 illustrates several geochemical and mineralogic parameters for the two Puye fanglomerate
sequences and the intercalated clay-altered basalt. The rubidium (Rb) and Sr data used in generating this
figure are listed in Table 10.3-2, and the mineralogic data are listed in Table 10.3-3. The natural gamma
signai is from the Laboratory natural gamma tool, operated through 9 5, a in. casing. Figure 10.0-5
compares Rb/Sr ratio, clay content, a glass alteration index (ratio of glass to glass plus clay), and the ratio
of quartz to all silica minerals [quartz/(quartz + tridymite + cristobalite)]. The last two parameters are,
respectively, measures of the extent of alteration and of the relative abundance of quartz (abundant in
plutonic and metamorphic source rocks) to all silica minerals including those that occur in the matrices of
intermediate-composition volcanic rocks (tridymite and cristobalite).
The upper Puye fanglomerates at R-22 have Rb/Sr ratios of 0.1 2-0.1 8. typical of T schicoma dacitic
sources in upper-level Puye fanglomerates (0.1-0.2: Broxton et al. 2001. 66603). This range of Rb/Sr
ratios is higher than that in basalts (0.02-Q.OS) and in dacit1c lavas of the Cerros del Rio (0.07-0.08), but.
lower than that of deeper pumiceous Puye deposits found to the west at R-19 (>0.5; Broxton et at. 2001,
66603). The Rb/Sr values of 0.12-0.18 thus make the upper fangtomerates at R-22 fairly typteal in
companson with other Puye fanglomerate compositions. The low ratio of quartz among silica potymorphs
tn the fanglomerates (Figure 10.0-5) is also typical. Petrographic data for the 2-4 mm clast fraction of the
two upper samples (1 188- to 1 191-ft depth and 1273- to 1278-ft depthi •nd•cate that thts fanglomerate
senes contains clasts from a mixture of intermediate-composilton volcan•c litholog•es. rncll ding lavas and
pum•ces. with either anhydrous or hydrous maf1c phenocrysts or both (Appendix El Fragments of basaltic
or metamorphiC lithologies including quartzite occur but are rare (averagmg -4°ol The lower sam;''9. at
1 323-to- 1328-11 depth. consists predominantly of clay-rnatrrx clasts of 1mmature volcanic sandstonf'. but
ER200 1-0960 27 January 2002
)
' )
these sandstones are derived from volcan1c :,ourC(' 10<:11~; :,.,Tidor tv tht; htflolr)g";::> rf)proM.~rlod afl O')ctrM'f
rock fragments. The higher clay content ol ttl(~ ~-••n1p1~, o~t 1 :J~·:J· tr• 1 Ol28 f1 cJeptt11~. rHIItKtod m rtt ragher
glass alteration index (Figure 1 0.0· 5)
'10.5 Clay-Altered Older Basalt{1338- to 1406-Ft Depth)
The basalt at 1338- to 1406-ft depth. between the two :;<:quenc(': r.>l Puy'! langlrJmerates. rs a h<aa·11ly
clay-altered tholeiite. The chem1cal cornpos1tion vf th1s tholeiite IS represented by four analyses h.sted aa
columns 17 through 20 in Table 10.3-1. All of ttre samples 11sted there are selected from retatrvely
unaltered cuttings, but some clay alteral1on occurs in each. The mmeralog1c analyses of two 6afnples are
listed in Table 10.3-3 (rows 6 and 7). These samples include a spltt selected from 1347· to 1352·f1 ~ for evident alteration and a more representative sampln split from 1377- to 1 382-ft depth. Both of these
samples show evidence of clay alteration without assoc1ated sil1ca. calcite. or zeolite formation.
Comparison between this older (i.e .. pre-Cerros del A1o) basalt at A·22 and that at dnll ho;e R-9 to tt~e
north (Broxton et al. 2001. 66599) indicates signiflc.ant chem1cal similarity. The chemical sim1lartty
between relatively unaltered R-9 and R-22 older basalts sugges:s a correlativn between the rwo. but
further analyses including radiometric dating will be needed to evaluate this possibility. Two argon· 40/argon-39 (40 Arf9 Ar) ages have been obt< ned lor the older basalt at R·9. yielding a feasonab4y wen bracketed age of 8.5 to 8.6 Ma.
The sample of R-22 older basalt at 1 377· to 1382-tt depth represents the lithology at Westbayrro~ screen
#4 {1378.2- to 1384.9-ft depth). The significant clay alteration m this sample ( -17°'o smectite) may be a
factor in reducing flow at this screen. even il the basalt at !h1s depth is fractured.
10.6 Lower Fanglomerates, Tentatively Assigned to the Puye Formation (1406- to TO at 1489-Ft Depth)
A lower sequence of fanglomerates extends from 1406-ft depth to the TO of R-22 at 1489 ft. These
fanglomerates bear some similarities to the upper Puye fanglomerates, but there are several significant
differences between the two. The lower fanglomerate sequence is less siliceous and has lower Rb/Sr
ratios than the upper fanglomerates (0.09-0. 10 vs. 0. 12-Q.18; Table 10.3-2 and Figure 10.G-5). This
decrease in Si02 and Ab/Sr with depth corresponds with a rise in Mg# (Figure 10.0-4) and differs from the
Puye trend in drill holes to the north (R-9, R-12) and to the west (R-19, CdV-A-15-3) where the chemical
evolution of the Puye over time is from more siliceous to less siliceous volcanic sources. Petrographically,
the lower Puye fanglomerates at A-22 are dominated by a dacitic lithology characterized by a single type
of anhydrous mafic phenocryst (clinopyroxene). Other intermediate-composition volcanic clasts are
present, but this clinopyroxene-porphyritic lithology predominates in all samples of these lower
fanglomerates. The lower fanglomerates also contain two-pyroxene, clinopyroxene-amphibole. and
clinopyroxene-biotite lithologies plus partially-altered pumices of intermediate composition. The deepest
sample (1482- to 1487-tt depth) has a small amount (-5~to) of siliceous metamorphic lithologies including
biotite-muscovite metagranite, a kyanite quartzite, and strained quartz of metamorphic origin (Appendix
E). The shallower samples in the lower fanglomerates lack these lithologies from distant sources and
contain fragments of immature volcanic sandstones. probably derived from local sources, that are rare in
the deepest sample.
If the older basalt at R-22 is correlative with that at R-9 (see section 10.5 above). then the lower Puye
fanglomerates at R-22 are older than -8.5·-8.6 Ma. If this is the case. the lower R-22 fanglomerates are
likely to have been derived from pre-Tschicoma volcanic sources. The closest volcanic rocks of
appropriate age and composition are those of the Keres series of silicic. intermediate, and basaltic
January 2002 28 ER200 1-()96()
lo!holt.>IJ!It>fl !hill'" t >JI>I!i<J .. , uAh .,1 It••·• ·"'HI v>il•~.l ''"'l ,,,,.,u,,.,, .. :,t rJIIht1 LllJUiillory !>lie Vok'.~1ru:;m Ill thiS !,,kJ wil~ llft•vf'l bt•lwt~(l(l t 1 antl 7 Mta G•vtrn tho W•lonl•ially c:onr.•dor able 8Q(t of tt'l4l lower
l~th\JI<>~n~•ntt!fl pt R-22. '' '7> roaMof1ilblo to q1Jt.!~ho11 "'''l~ttlor lh(lt,(l IJopor:.•lr. £hOulrJ ~ •n::hJdl~d w•th•n the p,lyfi r (lfrTitlllrJf) ~·I MHIU!d t.)(l iJ!c~ •• GnQil lo i111(Jit\tlr :ollill11JI[IJJhiC r.y•;l(!ft1 :>tnlllar In \J(!Il(!!Jif> to the Puye but
•r:d;1lvd on lomtJ lu .-:,,rt>r. yi.JIUtfll:.m. r.uc:tl .1!> ltll.o Cotl>lh r ()lfllU!IOn T 1)15 qul!!;h()fl !>hould be a<k1rt:r.sed tf
••HltQmMtl( aa!•ng ol "''" otr)Or ba:.;all <tl H·22 r.onf1rms <l tA1r)(;eno age
'1 0 BOREHOLE GEOPHYSICS
~~ hhft''ob&rgt!'r Worqhnt, & l ('r;tiiiQ dod !he t>orehnlo Ql!ophy5o~al loggtng measurements for (ha• • .cton;alton Well n 22 '"October 2000 aft•·· lhE! borehole rc;H;hed TO. Schlurnberger's r.omp:ere ·~·port •t. tnelvtro<l•n lht& d<.>t;Jtnunt as Appcndor F fon 1110 •mr.lused compact diSk)
T r;C! P'lf'!'\Ary p .. rpo!.e C>f S<:hlumtw.rgers wor.,_ war, to ;tt:qu•": rne<tsurfJments that would help charactenze
!ht• bv'""'<>ie and nf}ilr·borehole t1ydrogeol<>9te onv1ronment Such tnlormallon IS used to des1gn th€ .-~"''·
10 tmpro"'«l' una<•r'!.tar•drng ot :;ubsurtace !ilia condtllons. ana to ass1~t1n deCISion-maktng.
lhctiOgl w~re acQwroo 1n a 9.269·tn d1ameter 5!eel Ul5ong The pnmary geophys1cal logging services pt>rlom~ed and t11e tools u$t~ to perform them were as follows:
• Compen:oatea Neutrcn Tool. model G. used 1n the vadose zone to measure volumetric water content beyond the casmg as a means to ovai,Jate mo1st'porous zones and to esttmate porosity in
the saturated zone:
• Host1le Natural Gamma Spectroscopy (HNGS) tool. used to measure overall and spectral natural 98mma ray actrvrty. 1ncluding potass•um. thonum. and uranium concentrations as a means to evaluate geology/lithology and the presence of clay vs. sand:
• Elemental Capture Spectroscopy tool. used to measure concentrations of hydrogen. silicon. calcium, sulfur. ~ron, potassium, titanium, and gadolinium as a means to charactenze mineralogy,
lithology. and water content of the formation: and
• Litho-Density Tool. used to measure bJJik dens tty and phoioeiectric effect as a means to esttmate
total porosity and characterize lithology.
In aadrhon, Schlumberger recorded calibrated gross gamma ray readings with every service except HNGS to match the depth of the logging runs.
Schlumberger reported that. overall, most of the geophysical log measurements from Well A-22 provided
good quality resufts.
The company did note that the moisture and bulk densrry logs appeared to be severely influenced by water between the casrng and the borehole wall below the water level. The result was highly elevated water·f1ll8d poros1ty measurements in many intervals below the water level.
Similarly. Schlumberger reported that the bulk density log was highly mfluenced by air between the casing
and borehole wall above the water level. The result was recording of erroneously low bulk density and
htgh 811·filled porosity data in many intervals above the water level
Schlumberger sa1d, however. that the moisture measurements above the water level and the spectral gamma ray and elemental weight percent measurements throughout the well were generally unaffected
by these annular votds.
ER200J·CXMO 29 January 2002
(.
• u woll wnhJr I(!VOI of!)'_,~, t1 b.ri<IY'tl r.ur!.11." .,,,., ·• !•"·'··•!.\•• ·•·cl·'·'·••• 'J''"·'•ill•ot!~r ~~·~:Ill~.;"'! ;/It
'he time ol logging;
• tncreased vadose zone rnc•r.luro U1ntor,t ,r• ''"} .nh:••·''~·'''''"''"'" ',tj tl :IM tOO l11k'l ~t·-·~ d
5°o) nnd bolwoen 3&0 11 <Hld 715 t1 po·· .. or qtt.mlcr'
• increased satur a led /Ono r,orot;rly ( YriJ;JIOr lrlilll Mr. ! '"' !ht.· ;11\<rrv ;II I rom 14<Y.l f1 LJ I -4 7e " llr?og
total depth) corresponding to the Low«?r P11Ytl r Grrr . .,l•o" .:~nd
• clearly defined strattgr aphiC.tlrtlloioyi(. tJ(Jun(lol'>(!!', 1•,! ,, ; ,•m •n ltlfl t';(!( ,, ;J! oarnm.t ,.flO(, Q4P".J.:.r'""""'11(;*'
logs).
12.0 HYDROLOGY
Based on data from nearby wells and the s•t£ -. . .,,.d(! gevlog.c model rt was pred.cted lhat R-22 WOr..Ad
encounter two zones of perched snturatron 1n addrllon 1<) the rugrof\atzone of saruraliOn The peo!Ch!HJ
zonns were expected in the C-€rras eel Rro basalt.at..a.deplh of 148 ft and m the Puye f0fl1\8f).on a1 a
depth of 487ft. The regional water table was prediCted to lte at a depth ol 922ft'" the Puy. FOFT\8~ Mt
this location.
12.1 Saturated Zones
This section discusses the occurrence and mov&ment of water tn the saturated zones at R-2'2
12.1.1 Groundwater Occurrence
The two possible occurrences of perched water expected m the Cerros del Rto basalt and Puye
Formation did not materialize. Rather, the dnllers first noted water at a depth o1 approxsma1ety 890 to
900ft in the Cerros del Rio basalt. After 30 min, water-level depth was measured to be 883.05 ft. This
water is believed to be associated with the regional zone of saturatron for three reasons: ( 1) the regJIOIWII
water table was projected t':> lie at a similar depth (922 h); (2) no obv•ous perching horiZon was
encountered; and (3) the saturation continues to TO.
The most productive -saturated material is a 1 65-lt thick 1nterva1 ot Puye Format•on undertying me Ce"'oe
del Rio basalt. The least productive is an interval of basalt beneath the gravel. An 83-h thiCk Interval o•
volcaniclastic gravel. tentatively assigned as pan of the Puye Formation. between the basalt and TO 15
moderately productive.
12.1.2 Groundwater Movement
Characterizing groundwater movement requires both a drroc\lon and a rate. Although data f01 evaluating
horizontal flow direction is not provided by a single well. vertical drrect•on of movement can be ootermtntd
by analysis of head distribution along the borehole. A genE!ral rdea ()!potential !low rate IS~ by the
hydraulic properties of the saturated materials determ.ned from ana1ys1s of data from held testsng
.ls:muarv 2002 30 ER200t·<WO
12 .1.2.1 Vertical He~ Distribution
Tho dlle<:hon o! verlttal yrarJtent. 11'1al tS. wh£:1hor water rnovernfmt t5 upward or downward, •s best
rll!termtne<l by ~•arntrii'HJ water·lcvcl (j(.•pth& ()r ci•Jvahons (hcadr,) rneasurod at cJtfferent borehole depths.
II wator·le..-el df~plh '"' "''1!,e!. or t.c:1d ducrea:;e!:. wtth tJOrehole d•:pth. tt1en the dtrecllon of tt1e vert1c.al
y•.Hhcn! 15 down.,..md Corwer$ely. :1 tt1e watcr·level dr.:plh oecrea!:>£:5 or ttead 1ncreases wtth borehole
ciepth. the diiCC!Ion ot ..-el1tc:<.JI gradtcnt tS upward Thts grad,ent d11ect•on can be checked by comparison
w•th tJE!Lld dtSiflbuttons obt;ttned tn the completed well e•ther ( 1) durtng straddle-packer/injection testing or
121 trom transducers tn the Westbay'"' mon•tonng system.
AMempts to measure water·level depth were made dunng pauses 1n drtlling by means of an electric probe
lowered down the drrll roo As cas.ng was advanced during drilling at R-22. there was a cons•derable
l.ength ol ca&ed hole wnerH~ver waler-level measurements were attempted, and only composite values
coul<l be obta1ned Although not 'iuttable for determtning hy!lraulic head. such values can ind1cate the
general d~rechon ol verttcal gradttmt. Unfortunately. 11 was d,fftcult to measure water level at R-22 as the
probe became lou!ed by drilling tluid adhering to the instde of the drill rod before reaching standing water.
However. heads obta.ned during testing clearly indicate a downward gradient and thus confirm the
locatton ol A·22 tn a recharge area. The ptezometnc profile constructed by Westbay at the time of
•n~;tallation of the MOSOAX • System. a pressure-mea&urement system, (after testing) also shows
dechnmg head w.th depth or a downward vertical gradtent at A·22.
1 2 .1.2.2 Hydraulic Properties
Hydraulic propert•es may be determined from laboratory tests on core samples or from field tests
targeting screened intervals. Although no core samples were taken from the saturated zone, and thus no
tab tests were possible. field tests were performed, as descnbed m Section 7.0. Preliminary results of
testing are given in Table 1 2.1 -1. Screen n 1 was not tested as 1t straddles the water table. Single tests
were conducted on screens lf2, lt3, and #5. Screen #4 was tested twice to check reproducibility of results.
Both tests involved exactly the same test conditions (injectton rate and duration). Except for screen #2,
the hydraulic conductivity values obtained ar~ all of the same order of magnitude. Complete details of test
analysis will be given in a report being prepared separately.
r---Screen 1 I I (unh)11 I
l I 1 Clb)
k 2 (Tb)
~· 3 (Tp)
4a (Tsfb) 1-·
4bil --
I 1-i 5 {Tp)
Table 12.1-1
Summary of Straddle-Packer/Injection Testing at R-223
~~ Duration of Injection I Hydraulic -~ (min) _ 1 Conductivity (ftldt
Static Water Level Average lnjectio Elevation (ft) Rate (gaiJmin)
!Straddles water table; not tested)
5744
5702
5690 --·----r-
5690 -
9.12 ------12.0
16.0
·- I ____ 2_0 ____ "1"1---0-.2-7---·-
-·---1-----,o--~2-.32-·--~ ·-+----------r~
---~--··· :=t~=-~-~---_1__:_:~_7 ___ ---i 16.0 ----·--·-
17.0 ··---- __ ........l._ ___ ~---·-·L _____ ,._.s_7 _____ ...J
a Prehmtnary; values rnay change slightly upon further analySIS.
b Tb,. Cerro& del Rio basal!: Tp = Puye Formation; Tsfb =Santa Fe Group basalt
c Ba&ed on anatysos by Bouwer·Rice method (Bouwer and Atce 1976. 640!:>61 d
RepNI of test on screen fl2.
ER2001·0960 31 January 2002
)
13.0 GEOCHEMISTRY OF SAMPLED WAlERS
1wo !>clf)CfllflQ bvrehrJil, Wo!IOI :.,trllrJit,· .• ,',i•ll•. ;:, ., .. ! 1• .. I, .. I' : •·•·• fl':rl ,,,. ol ;,tn,!f!(l .,,,,,lt. ·:
consttUents. Potent tal cont:tmtn;mt:, nt '·' .n .. ,.,. , ,. H . ·. · " .·l• · . · ·•'"' ,,q.,rw. • • ,rr;~,, , .. rxJ:.. ,,..,, •• _f><'J'"'·
acrd. trttrum. and o!rter radton,JCI,de~. rJ,•,r,,,:.• d .11 T f· ',·l di,·Jr ''l'"•t'·'l"· .";r,r~pto~n l./•I~L ~~+"tt~ •j:jf-'.(:1 1
13.1 Methods
Groundwater samples tor morgdntC. orq.t•,r;. :tr~<l •.,·hr,rnJI.I• '" • .,,:,l•lu~,nl::. wf'r11 r.olloc!(r<J u~·r"J -l
stainiess-steel bailer at 883 and 1489 t; at R ·2:.! I •:rnrJI:r;,:,,rr, ,,,,t,•tltt 1 pH. <Jft(l :c.pO<~Ihc C.( rl(J•Jt:t.ilP(.O
were not determined on-srle due to (:qUtJ..Irrl(:nl rn;,lt<.~nc:t•Cln • l ~'(' ,,,>r1at>ie meter that read1 1~
parameters failed in the field.) Both liltf:red \ffi<IJ'·' ,~nton!,; ..11 o nor·,t,tt~'ru~ (vQI<Ittle or~an;c t(;(Tl1;(Nfl011.
h1gh explosive [HE} compounds. 5emrvoialile com pow •d5 r ;,(l,or>uOides. and ~\able t5'Jtope~ or "•lt'..-;,I"Yn;
samples were collected lor cherT' teal and radtoctu:nnutl itP<tl r•es Altquots of tho sampler. W\lf'e t.nt.rlr.-<1
through a 0.45-~-Jm Gelman litter and aucltfted wt:h ;m;l;yt•c;~; qrad(· HNO., to <1 pt-1 of 2 nor 1('~!. fOf
radionuclide analyses. All groundwater samples c .,tlnctetJ •n ttw f,o;irJ werl! s:ored at 4 ·c untl rhc~ v~re
analyzed. Alkahn1ty was deterrn:ned 1n the laboril!ory us•r.y :~t;;n<J<>rcJ I•Hr:l•<''' lnCt'ntquet. ~·K.h rna f
approximate field conditions due to sample degass•ng
Groundwater samples were analyzed usmg techntque~ speCJftwJ HI EP:, SW ·846 mcth0d04og.e~ tn<:!u<Jsn.g
ion chromatography (IC) lor bromtde. chlor~de. !lu(Jrlde. pttosptlille. and sulfate gas cnromatograpt •. -
mass spectrometry (GC/MS) lor 'JOiatilf~ and sem•v(d.31•le organ•c. cc,mpounds Contract lat>oratoner. lor
this work included Paragon Analyttcs. Inc (crgantc .:ornpounds) ,lnd G•.,neral Engmeenng Lat>oratc,nes
(GEL) (anions).
Radionuclide activity in borehole water was dctt:rn1•nea by dlle<.:t cuL.nt;ng and ciectrot;rt•c enr<:hment lor
low-!evel tritium; alpha spectrometry tor amenc.urn. plutorlll;rn. <.~nd urantum ISotopes; gas propen10nal
counting lor strontium-90; and gamma spectrometry tor cestum·137 and other garnma-em1t1mg tSOt~
Contract laboratories including Paragon Anal~1tc:s. Inc tracJ•onuchOt~S) and the Untversi'y of M•am• !IO'IN·
level tritium) performed this work.
HE compounds and associated degradation products of 2.4.6·lr!n,trotolucne (HH! were analyzed o~
hrgh-pressure hquid ch;omatography (HPLC) at Paragon Analy1rcs. Inc
Coastal Science Laboratories. Inc., Austrn, Texas. ustng tsotope rnlic mass spectrometry IIAMS).
analyzed ::;table rsotopes ol nitrogen (nrtrogen-15 and nttrogen-14)
Laboratory blanks were analyzed in accordance wrth EPA nncl L.lboratory procedures. The preets•on
limits for major ions and trace elements were generally ~ 1 0°o.
Because of the presence o1 EZ-MUD®, OUIK-FOAM®. and other drrlling flu•ds. these borehole water
samples are not representative of groundwater. espectally tn low·yteld saturated zones. Consequently.
these data are used only lor screening purposes to asstst drill.ng dec,srons Groundwater samples Will be
collected and analyzed lor major ions. trace metals. stat>le ISOtopes. organtc compounds. selected
radionuclides, and other chemicals dunng characterizatton samplmg
13.2 Geochemistry of Regional Aquifer-Cerros del Rio Basalt
The activity of tritium at the regional water table t883 Itt wd.:. 1 ')9 pC1 L !Table 13.2-11 Th1s screen1ng
value suggests that recent rechmge to the rcgtonal aqurtE:r <ll R·~~2 t:;ts occurred s1nce the earf\j 1940s. At
January 2002 32 E R2DO I -096()
"''" ,,.;;IIVIty. 11 t;.mmot lM7 d"tnrm•nc,d '' Ulll'.o tllltiJM rt~pH!~t:nlh 1 al)otatory chr.charge Of r11lat•vely lafil
mlll\ratlon of worldWido fllllouttrrllum !rom proc.tp•tabon.
, .• b .. 13.2·1
Hydrochemlatry of lllorehole R·22. Meatta del Buey " f "' - --.,..-• ••• •·-- -~--w· ·-
' o.,ctllft) i 813 : 1489
fG;~~ .... - . l-CR biNH -- ·1 ji~;f·F;,;;~ j ~-- ......... ··-.·----· .... ·····- ·t·--·------------ .... .. ... ~-------------- .. i
' Date Sampeed : 09/"JOIOO 10111100 ; , ........ ______ ----- __ .. - . ·- -·· ~. ·- ... _. ______ .. -·----]··------- -------·--- .. --i
1 Tf1'l1Um {JJQ'l) 1109.2 3 13 1
rA;.74;-;;01~-,---- ro (>57~--\:, ··· -- --- i--=- ---------------.. -l
f'-~~-t~~. ~-- ~. .. --- i -~i-- ~~ .:-- ~-- ···-. --~ ~ -=~~- ~~-=-~~~ . -) 'Pu·~38 ~1\.) ·0.006. u - j r-------------------- ---.--- ----------------- ... -·-- --------------------' Pu-239240 (pC\'l) 0.027, lJ -
r-~:!~ !~~-=~~:=~= ~~-~-=~=-~~~- -~~ -=---~====-~i
~~---··= :rfc_-=:--=----j ~- "9'L) <0.016. u --
n¢) 21.0
~) 1.19 -~-------------~-------------~·-----------
-~ C:p(). (oxalate) (mgll) 1.05 ~-----------------~--------------+--------------
-CIO. (perdllofate) (}lgl\.) <1.04 U
---~r-------------PO. (asP) (mgll) <0.2. UJ ·--- ------------1 so. (mgll) 19.9
Acetone I"¢) 0.820
2-A-4.6-0NT (mgll)
2-Butanone fm!ll) ~-------~-~----~-------------2.4-Dinitrotoluene (rr9l)
Methylene chloride (rr9l)
Nitrobenzene (mgll.)
ROX <mgll)
Note The data m this table should be used only for screening purposes U
means no1 detected. A dash in the table means, "not analyzed". J means
above inS1rument detection liml1 but less than practiCBI quantitation limit. )(
means false positive based on reference spectra. "- means "per
thousand."
Activities of americium-24 1, plutonium-238, plutonium-239,240, and strontium-90 are less than detection.
Activities of uranium-234, uranium-235, and uranium-238 are 1.48, 0.1 26, and 1.41 pCi/l, respectively.
A borehole water sample collected at 1489 ft was analyzed for stable isotopes of nitrogen (N-15 and
N-14) to evaluate the source(s) of nitrate at R-22. The o1 ~N (N03) value is +9.6 permll (Table 13.2-1),
suggesting that the water sample is enriched with nitrogen-15. Denitrification i::; a biochemical process
ER200 1·0960 33 JaniJ8ry 2002
'-' ' .
occurring under anaerob1C condition& ,find tti cu!;•lyu:~el br• rJ(Intln!.,,ng bi)cte-no fiU"'jt H Tfloo(:JO«~
denitrificsns. Donltrific.atlon it the ovorall t«i'dliC.Mn or r111tltl6 (t-~IVJ!. nnd vonou!\ •ntbtTn•lh'JUIIIoO c~
such as nitric and nitrous cxides, to N7 {)aft ct~con Dt~ntlnf•ushm' pro<Ju<.er. por.JtJVo .&'~ v~ i•liO, +30%..) beceuae ''N 1!1 consumed (mt-tabohzodJ by Cill41b<•hc <>tg;tn.:.m& TtuJ donl1r'lfteafJOtl ,...,. .,.
enrlc.h&d ' 6N In the solid and liquid wa:>te (ma:nurc) (Clark and Fntz. 1997. 59168t Tht6 ltOIOpiC ..-~~u~
suggests that denitrification •s occurnng at lh& bonorn of the txm:holfl :lnd thttf an~terQbic ~
prevail at 1489 ft. Based on borehole w;jffjr chemtr.try. the domm.ant redu<:tng agerU 1~ ~'~
contributing to anae•obk:: condition& mor.t likely oncllJcle EZ·MU[)(P.l and OUIK·FOAM!>.
Concentrations of bicarbonate. ctllonde, fluoride. 1:1nd bullate at the rey•onal water ~ 8/e 120. ~ 1. 1 ft. and 19.9 m~. respectrvely (Table 13.2·1) Concentrations ot bromtoo (··0 lO rrql). ~ fM P)
(<0.20 mgll.). and perchlorate (<1.04 IJgfL) are less than dolection.
Oxalate was detected in the borehole water sample. collected at 883ft. at a coocentranon d. 1 05 rr¢ (Table 13.2-1 ). This compound may be produced by 1he broakdown ot EZ·MUD8, whd\ conta1n1
polyacrylate, a substituted carboxylate. Oxalate can occur naturally at very low conc4fntr~
(<0.02 rngll.) in groundwater and surtace water around the Laboratory and elsewhere {Broxton e1 at 2001, 6>6599). Methylene chloridl3 (chloromethane) was also detected at 0.0048 mo'l (J vatu.) (T .llble
13.2-1/. It Is a known chemical used in analytical laboratories for utraction dunng GI'..JMS ~-8oth compounds will be included in the analyte suite for charactenzatton sampling In the c:omple1ed wei.
Analysis of the borehole water sample collected at 81~3 11 detected HE compounds and ~ products of TNT. Most signific8ntly, hexahydro-1,3.S.trinitro-1 ,3,5-triazine (ROX) was det@Cted at a
concentration of 90 JJg/L. This result is believed to be a false positive. based on similar chemical structures between ROX, including C-N-N02 functional group, and the polyacrylamide ((-CH2CHCONH2-)n)-polyacrylate ((H2C:::CH-COO')n) copolymers comprising EZ-MLIO®. The comoound 2-amino-4,6-dlnitrotoluene (2-A-4,6DNT) was also dE!'tected above the instrument detection hmfl but
below the practical reporting limit (J value) at the regional water table. The HPLC melhod (EPA SW846-
8330) Is susceptible to false positives, and, consequently, an alternative analytical ~ using (jodl
array was us&d, which provides more accurate results. Paragon reran the borehole water sample using diode array, and HE compounds and degradation products were less than detection (0.25l¢.).
The Groundwater Focus Area conducted an investigation to determine if EZ-MUDe and OUIK-FOAMe produce false positives for HE compounds and associated degradation products when analyzed by the EPA SW-846 Method 8330 (HPLC). EZ-MUD® and OUIK-FOAM® were added to deionized water to
produce solutions containing 100, 500, and 1 000 ~-tg/l of the respective drilling fluids. The SBmples wete
submitted to GEL and Paragon Analytics, Inc. and analyzed for HE compounds and degradation p:roducta
using HPLC with diode array detection. According to EPA Method 8330, an anafyle is reported as a positive identification If there is a peak response within specified retention time windows. The diode urray detector provides additional information for identification purposes by producing an absorption speurum, which is then matched against a pure spectrum of the analyte stored in a spectrum library. 1ne second column confirmation requirement in Method 8330 showed responses associated wi1h various HE compounds, which were due to similarities in the C-N bonds in the EZ-MUD® (polyacrylamide). These responses resulted In false positives for HE compounds and degradation products. The diode array spectrums for these responses, however, did not produce a positive match when compared to the reference library spectrums, and therefore, no HE compounds were detected. This investigation demonstrated that EZ-MUO® produces false positives for several HE compounds. lnctuding RDX. TNT, 3-nitrotoluene, 2-amlno-4,6-dinitrotoluene, and 4·amino-2 ,6-din1trotoluene.
Additional groundwater samples will be collected during characterization in the completed well to evaluate
the presence or absence of HE compounds at R-22.
January 2002 34 ER200Y -D960
1)_, Occ:urrenc:• and s..:,"ru of Acetone At R·22
(hJ""U r)1o!ltng ,,, "'""'' ,.,,.,, <l•·l.,:.l•:!l ;,1 thu 11·<,1''• "' .-•.• t.•• •,,IJI•! ,,, H ;';.> al il I.C71CJjrtlrahon ol 'J 1120 mgfl
• l nl.litt I) ;• 1 1 ,~,.!.otiC,, o! lilt!> '•",1•11\1( (OillJ•Irlln··J n•.ty b•· rJuo 1() ,,, •r.lilhOII CJI OUIK-FOAMIPJ. WhiCh
r u11111"'t. ,:,.r.'lJH•p ;1 ,,lr_otv / 1t,to '• ,II• u•no (Jr•,r , r•,:,,r,n I•" · ·.c:n!·, 11::.1111:. ul r .cmlarrnaiiOfl s-~mphng IO
•)r-lp-11''""' tho t..•H•'< ••1'-l ''' ·" ,,,,,n(l Jl,,, poi71''''•'! ··11 r ,,ll•·c!rny t,qnl.rrr•.el•on ~.<JrllfAe!; was to ~v<Jiu<lle lhe
:.•rt.tx>(.'tll>fl ptt~:.cmt4' ol ,., •·luru• ·rJt•nlrl•c.·<l .n lr,JCIIr,nost•r:;n tankr> 11r.1r. tanl<.s) allor r.omplehon r.;! 1t1e dnlling
<tt t•vf1tOG
011 Ocwr,.,r 16. ;>000 . ..,,,,,.,"'''"II'''!' ,...,~,,J r.()llf.1<l•:d fr'•rn 1~11:! '"J'J•.trcm wnler !'.Ourco (water u5ed dunng
..... u <'rrllingJ. IW<• "'•c lanio.t. tl•lnl<t. ubN1 lo ~.lf.lrt! 111~ Wdlf!r producorJ du11ng well dnlhng). and a tnp blank.
t ""' '":.ullt. •v•! l'"~l>enlod on T 4ible 13 :l-1
Table 13.3-1
Samp~ 10
( ,W'A 0(H)01 7
GW'>400·0019
r; w ~>4 ·00 007 ,
Aceton«~ Concentrations In Water Sample•
r Sample Oncrlption Acetone Concentration (~9'1-l
..
t~orthe.m most lrar tt1nl<
F rue. tank - 370
' ln~tiOI'I water
(dr'S4-QO ()()~·tRii' ; lntKIIQn W<oler re,'lllaly5tS •·- ·-- -· Tnp Blank
'•""''""""' ''""'' loO!>>tr.,. due tc o!;tlJJHJPyl ilk.ohol b
AR m<>~tnr. """'.alySIS
·t-- -
58
Oil~ed on the above anat;1•cal results. the largest concentratiOn of acetone was present tn the tnJeCtton
,a;:~ler Ba~d on these results. the follow•ng actions were performed.
• The ma~s spectra were requested from the analytical laboratory and were rece•ved on November
7.2000
• The d•slnbutors ol the E2·MUD plu!® and the OUIK·FOAt-'® IBaroid) were contacted. B<troid
staled that acetone was not used tn any process to produce ttletr products.
• From these prehmtnary results. a samphng analysis plan !SAP) was wntten to conftrm the
potenttal source ot the acetone.
Tt1e lolloW1ng add1t1onal samples were taken on November 2. 2000.
• Two samples were taken from the mJechon water source (a fire hydrant just outstde theTA-54
en!rance gate). One sample was taken 1mmedwtely alter operung the valve and one was taken
after frve m1nutes of purgtng.
• One SL'mple was taken !rom the truck used to haul and store the water dunng drilling activities.
• One sample was taken of the Baroid EZ·MUD p/u!$used dunng drilling.
• One ~ample was taken of the 8aro1d OUIK-FOA~ used during drilling.
E R200 I-0960 35 January 2002
• One sarnpiH Wfl'!i la~•.Htlrt,rn j•,,t;l; •,! 11•1 ,,,.' ,,q·r!. ·' I '··· '·•··· ·.''·ill' .. t<l .,,~ ~ ....... l···e·,·"·'AI'I
sampled
• On'' sample was taker. horn .. fra<. !;u.~ ,,• ·'· H'•·"·' · ·l· "· ·, '·''" •11 ;"o1 1~. t.-: ••. ~·.l ~t·fl ll
background f;ample lor 1t1~ hilC·1itnk<.
Sampling was accompamod Ntth <; r,pr":~. ol t,:.,r·•·. !•. •· •. .,.,,,,,. •··•!•·· :,,,! '';".-'J'''"•'·'S "•' .,.,r;y.,~.""."''"'
conlarnmatton concenlratton& fli;Jn~. Wilh.'r w•t!. ,,,,.,,"''"i ,,,.,,,.,, ,,,,. ·,.,,..,,,,,,,\11,, ·.,,."..,J <l<.~t~J "''~~'~~"' .,.,.
was heated to a temperature oi85'C lor on•, •I(,•.J' ,,r,o~,, '";''.1'"'.1 ,.,..!1 ,,,,,,,q,,,,
• One blank was designated ar. a lat,or atory :..11.,, :og1.• 1 •t '"~· ,,,,.J op,,,,,_..d ,,., !~14'l ,,,t, "'''.J0'*'7' •••'*
Wh!IE' samples were betng stored av.atttnq :1naly:m.
• One blank was destgnated as an analy::>•s t.1lilrH ar·d r,,,,,r "''' ". lll•J an;Jtyot•r.al i;t.V::.• .J;l>V) ':)...,.•h'J
the analysis of the samples
Results of the conltrmation sarnplos are pre~-ented rn Table 1 3 3 2
Table 13.3-2
Acetone Concentrations In Water Sample•
r---·----------·-.. -··-:··-·. l Sample 10 1 Sample Description
l--- ···i- ....... -........... _ .. __ ..... . . -
t=~=::---t-=-:~E;~~ .--_ (_ GW54.00·0034 1 Lab analySIS blank
GW54.00.()()37 t-- ..... Hydrant i~~-;da~-~~·~~~~;~ GW54.00.()()38 ~---Hydrant5~1~~i~s· -- .
1----------------+--- ---------·-···-GW54-()()-()()39 I Holdtng lank (!ruck!
f---- -r---·-·----·-- ........ -. ' GW54.()()-0040 ! EZ-MUD plu!iHI
GW54-00-{)()41 -~-- Frac·~~;;,-::-;;o· .....
~::::: -I ~;;0;~---L GWCV-00-0002, _ __j ___ . ~-~~~~~.k-~! .. ~~11 R-2~
a NO ., not detected.
b Suspeded false posittve due to isopropyl alcohol
2
ND
NO
NO
NO
NO
·~ .... .....
Polymenzoo. cOllld notar..v,z•
NO
24 . 2":09Q()OOi:'·-·- - ....... -·-
NO
. ---- -~·--... ......... •---f
---..1 i
Based on this investigation. the mass ~pectra !rom the tr·•ttal analysts sho,...ed lhal the tn)OCtlon wa\ef
used dunng drilling at A-22 contatned high conc~ntr<lhons oltsopropyl alcohol. whtch was mrSt<:S&nltheo as
acetone by Paragon Analyt•cs, Inc. (See Table 1 3 3-2 ) Tills ftndtng was •denhfted as a concem lOt lhe
following reasons:
January 2002 36 fR200J~
An11ly!ltb by GCM~> IJt•or, r].J!i c.hrum:tiO(Jtitplly !!or .snalytl! ~··''IJitr<tlton and mass !;pectrometry for
quahllc.ntton ilnd Qllilnlrh<:ollton
l h .. rw.>IOCtJIIU wo•ut•tr:. ol ;,c•:I<Jn~ irJ8 08) and I!.Opropyl .:~lcohol !60.1) are very s•mrlar. These
um'tJound!i wtU c•luto •n ''f~;,rty tho ~;;Hr.<: rctenlton 111m: on !Ire typ•cat GCtMS system followmg SW-846
M<•U>od 8:?60 Au!lone tL "'0 UJmpound of mterest at R-22. whereas rsopropyl alcoholtS not.
Thf.• man& un•lr. tor rr.opropyt ak.ohot are (m/z) 45. 43, 59. and 58. The mas:; un11s lor acetone are 43 and
~ T htl mass r,poct10muter tor quahltcatton purposes uses the mass units and retentton trme. The analyte
mur.t elute •n a <.erlatn retenhon !lmc wrndow and have the correct corresponding mass untts lor
•dt1ntthca110n The pr•mary mass 11n1t or primary ton ts normalized at 1 00°·o, and the secondary and terttary
'on:; rnust be prosent m c<,rta•n rattos to the pttmary ton lor fJroper qualification.
For quantlltcat•on purposos. the mass spectrometer u~.es the abundance of the pnmary ron only.
T ht> problem an~es that r&opropyl alcohol has the same retention time and mass units very similar to
;JCetone The prc1ect team suspects that the results reported for acetone from the laboratory are false
posttrve!l anstng !rom the 1sopropyl alcohol. Thts vtew 1s supported by the mass spectral data. Acetone is
be.ng mtstdentrt1ed because the secondary ton lor ISOpropyl alcohol is 43. which is the primary ion for
acetone. The analysts of the OUIK-FOAMCI!> confirms this suspicion.
The only pos1tive mass spectra for acetone were ~d1~ntified tn the !rae-tanks 371 and 370. The project
team beHaves the pos•ttve rdentificallon of acetone tn the trac tanks is from a mild oxidation react1on,
which converts tsopropyl alcohol to acetone. The o·,erall reaction is shown below:
14.0 SUMMARY OF HYDROGEOLOGIC FEATURES AT SCREENED INTERVALS IN R-22
The f1ve Westbay screened intervals in the completed well at R-22 include two zones in Cerros del Rio
tholeiitic basalt. one tn the upper Puye fanglomerates. one rn the older basalt, and one in the lower Puye
tangtomerates. Screen #1 spans the water level where saturation was first observed during drilling within
the Cerros del Rio lavas. Screen #2 spans the static water level in drill hole that was cased to 1330-ft
depth and open !rom 1330 ft to 1489 ft. Screen #3 is located within upper Puye fanglomerates that
produced large amounts ot water during drilling. Screen #4 is within hea1:ily clay-altered older basalt that
may produce very little water. Screen 115 is wtthin a lower Puye fanglomerate that has about four times
the clay content of the fanglomerate at screen 113 and thus may be less transmissive.
Screens #1 (872.3· to 914.2-ft depth) and #2 (947.0· to 988.9-tt depth) are both within the massive and
relatively homogenous Cerros del Rio tholeiite that extends !rom 780ft to l.l65 ft at R-22. Both screens
are tn lava series without evidence lor scoria in the cuttings samples. The most extensive scoria zone in
th•s tholeiite is much deeper, at 1030- to 1056-ft depth. However. flow contacts and rubble zones between
flows may still be a factor in transmission at both of these screens. Screen #1 crosses the upper transition
1nto tholeiite of apparently htgher lanthanide-element abundance and includes an interval (893 to 903 ft}
where no cuttings were returned. Both features may indicate the presence of a rubble zone between flow
units. Screen #2 lies just below the high-Gd tholeitte subzone. (See the interval in Figure 10.0-4 labeled
"htgh Gd tholeiite." The inference of lanthanide content is based on borehole-geophysics ECS Gd data.).
The upper and lower boundaries of the lanthanide-rich tholeiite may be demarcated by flow-boundary
rubble. Columnar fractures. entablature (subhorizontal) fractures. and flow-margin rubble all may
contribute to groundwater flow at both screens. Atl/:-th semens. the presence of relatively large amounts
of ferrous iron (-7 -8~·o F eO) may contribute to lower groundwater Eh.
ER2001·0960 37 January 2002
)
Screen fl3. at 1274.3· to 1281 O·f! dopth w•thtn me •JPPf•' P•n,-•· f;tt 'Jionwr:tiC!). •fl r~&pr~>f11q<J tty~
sample .al 1273· to 1278·11 dHpth. Tho ,ery tnlll(lr r..lay cor·tr~n! of nu:; :.;H11plo 14"'., of tho 2· to 4-"""l"t t•.t•
fraction as shown in Table 10.3·3) and the :tbunlJ.1nce of unitllf:r•~d yi;l~>G (21"'•1 <Ht:r •ndK..aJ~ d
generally unaltered deposits thatHre irllety to t;o lran-.rn•r.t.lvt:! 1,1():;1 olt!l(; gtnM. ''' It:•• a..~Jmple •t~ '~r
pristine. with a glass alteration 1ndex [gta~s/(gla:>s • clayll vf only 0 16 (F,~urc 10 0·~'
Screen #4 ( 1 380.2· to 1 386.9-lt depth) 1!'. w:lh•r t11e older 1pr1.:·C(::rroo <Jet H11.>) ba5alt an-j 11 'CI'Pf~
by the sample at 1377· to 1382-tt depth. H•gh clay contont (1 '!".,) •n a dcnr.Et nonp010vt. ~~ r~ "'-1
make this a relatively tight horizon w1th little flow In truf, itltere~ r.•rmple. the Oll:ld."'ltOf'l·ft•M)IIAJOOn of >#~
oxides has been extensive, and the lirrHted ferrous •ron rmnarn•ng ( ·2.!'}"., FeO) m11y have 1tm«1 rtt<k;111
effect.
Screen #5, at 1449.1- to 1 454.1·« depth w1th1n the low•H Puy•J tanglomf:1rater.. t& repr&Mnt.O ~ lht
sample at 1447 to 1452 ft. This fanglomerate sample 1~. more clay·ncn lttan the tar191om.,,MA ~.,..
represents Screen #3 (15% smectite vs 40,o smer.t1te) Alterahon 1S still largely tncomplete, Wlltl a~
alteration index of only 0.~1 (rig~re 10.0·5). Quarterly sampltng w•ll detormtne whether thta amrNtll of
alteration impacts flow at this screen
15.0 IMPLICATIONS OF R·22 FOR CONCEPTUAL GEOLOGY, HYOROi...OGY, AND
GEOCHEMISTRY
The most prominent surprise at R-22 was the considerable thickness of Cerros del Rio lavas (f9Jr•
1 0.0-3), which were c.!-nost three times as thick as predicted (983 tt vs. 339 «).The upper~ fr,)
alkalic sequence of basalts (190· to 480-tt depth) can be proviSionally correlated with similar MqUOf'!Cft
found at R-9, R-12, R-15, and in White Rock Canyon. making this sequence a regionally ell1enslve
component of the Geologic Model that can be traced beneath rr.ost of the northeastern Laboratory sne.
The most significant hydrogeologic impact of this thick set of Cerros del Rio lavas at A-22 is the
placement of the regional water table within these lavas rather than within Puye fa.ngJomerates. This
change places all flow and transport within the upper -300 f1 of the regional aquifer within basatbc
fractures and interflow rubble rather than through Puye pore spaces. Dif1erent flow rates and paltlways
are implied by this difference in stratigraphy. !n addition, the Cerros dol Rio lavas provtde an environment
in which constituents such as ferrous iron can influence water chemistry.
Beneath the Cerros del Rio lavas, the predicted stratigraphy included two units that were not enccuntered
-axial river gravels of the Puye Formation ("Totavi" river gravels) and ~ediments of the Santa Fe Group
(Figure 10.0·3). The reason that these units were predicted to occur can be seen in figure 10.0.2. Twool
the closest stratigraphic references for R-22 are at drill hole PM-2 and in an outcrop at Whrte Rock
Canyon. Projections from these references across the R-22 location predict intersection of both the lotavt
and the Santa Fe Group.
The as-drilled stratigraphy at R-22 owes its peculiarities to seve1 al features. First and most tmpOrtant ''
the exceptional thickness of Cerros del Rio lavas and cinder. indicating fill within a paleocanyon. The
absence of quartzite-rich axial river gravels at the base of this Cerros del Rio volcanic series suggests
that this paleocanyon was not the path of a through-gomg drainage ancestral to the modem Rio Grande.
It is important to note, however, that cuttings were not returnod from -51 ft of key intervals ooneath the
Cerros de! Rio lavas. (No cuttings were returned at the 1 178- to 1 1 83-11 depth or at the 1, 91- to 1 237-ft
depth.) It is thus possible that quartzite-rich gravels may have been present within 5 ft of the base of the
Cerros del Rio but were not sampled. As a result. it is uncerta1n whether the orientation of the
paleocanyon may be more east-west (carved by flow from the volcanic highlands/ than TlOfth-south
(carved by rift-controlled flow). Whatever the orientat.on. the water t<lble withm the section shown 1n
Januaty 2002 38 E R200J .()960
FIIJll!C ~0.0·2 1:; no h;nytr •:nhmly w•llun ~~;d•merots. iJS IJ•?he"ed pnor to R-22, but passes through a
c.onstdorable mass of b.1:.al1 t>eh .. en we!:. tern source reg1ons and the Rio Grande.
The older basalt at A·U. 11 related to the older basalt at A-9 of ··8.5 to 8.6 Ma age as expected. places a
limo honzon ot cons1derat)le ani!Qutly bt:lwcen 1'110 st:nes ot P.uye tangtorne1ates that would otherw1se be
.1ssumed tn the present lll(J<lel tc be no older than ··5 Ma. The presence of older "Puye"-like
tangtomerates beneath th1s older basalt places co<~rse volcanic detritus from the west at a time and
ei(?Vahon where l1ne-grarned detritus w1th a iarge plutomc or metamorphic component !Santa Fe Group)
was prev•ously presumed to occur. Th•s f1nding calls mto quesl!on some of the deeper stratigraphiC
contacts at PM·2 that have been descnbed as Santa Fe Gruup depos1ts but are anomalous as such when
compared ?o A· 19 and R-22. Future drilling should bEl able to resolve this problem.
16.0 ACKNOWLEDGMENTS
The followtng organizations and 1ndividuals contnbuted to th1s investigation.
SG Western ConstructiOn constructed the R-22 dnll pad.
Stewart Brothers Dritling Company provided Phase I drilling services under the directior> of Paul Garcia,
the drilling superv1sor. The driller was Stanley Johnson.
Oynatec Drilling. Inc .. prov1ded the Phase II dr1lling services under the direction of J. Edl.1't. the drilling
supervisor. The drillers were L. Thoren. D. Wilson. G. Woodward, A. Brown. C. Howe, anl1 S. Devers.
Horace Patillo was the site safety officer.
Stephen Francis was the host fac1lity point of contact lor administrative oversight forT A-54. ,,
T. Ball and S. Pearson prov1ded contract oversight for drilling activities and field support. L. Martinez and
J. Duran provided technical support for drilling activities and field support.
S. Hagelberg, J. Valdez. and A. Garcia provided sample management support. B. Hardesty provided data
management support for drilling. sampling, and well completion activities. M. Clevenger provided support
for borehole mate.oal curation.
M. Everett, A. Crowder. A. Lawrence. P. Schuh, J. Jordan, B. Hovda. J. McDonald, and 0. Frank provided
field support tor drilling. sampling, and well completion activities. A. Crowder and M. Everett provided
geophysics and video logging with LANL-owned equipment. Roger Sitton and a team of technicians with
Schlumberger provided contract downhole geophysical logging.
0. Larssen installed the Westbay sampling system.
D. Counce was the analyst for water chemistry analyses used for screening of groundwaters collected
from saturated zones.
A. Bohn provided oversight for waste management, and A. Evans and M. Shepard provided support.
The groundwater integration team, led by C. Nylander. participated in the planning and evaluation of data
collected during this investi{lation.
G. Turner provided Department of Energy (DOE) oversight during the investigation.
ER2001-0960 39 January 2002
J. Young of the New Mexico Envuonment Dcp.ortrncnt (W.1EDl pr<Mded rogutotory ov~rfiii'Jht dvong
drilling operations. M. Dale frcm NMED's DOE Over~;~ght Bureau uJIInctod £>omplo 6pltl6 from
groundwater zones and acted as liaison wtlh the regulators.
D. Broxton, J. McCann, and H. Wheeler·Ben!;On v•ere revu~wers lor the document
C. Schaller was editor for this document. P. Maestas was composrtor
D. Daymon and J. McCann supported all phases ol th1s mvo.:strgat1or. as leader& of the Groundwetm
Investigations Focus Area.
17.0 REFERENCES
ASTM (American Society for Testing and Mate11als). 1994 • ASTM Standard& on Groundwawr and
Vadose Zone Investigations," sponsored by ASTM Committee on Rock and Soil (0-18), Philadelphia.
Pennsylvania. (ASTM 1994)
ASTM (American Society for Testing and Materials). 2000. C 150·00a -AS Pv1 Standard SpeciflcatJon for
Portland Cement," developed by ASTM Subcommittee: C01.01, West Conshohocken, Pennsytvarna.
(ASTM 2000)
Broxton, D. E., A. H. Gilkeson, P. A. Longmire. J. Marin, A. G. Warren, D. T. Vaniman, A. J CrOWder, B.
D. Newman, B. Lowry, W. Stone. G. WoldeGabriel, D. Daymon, and D. Wycoff, May 2001.
"Characterization Well R-9 Completion Report." Los Alamos National Laboratory Report LA-13742-MS.
Los Alamos, New Mexico. (Broxton et at. 2001, 66599).
Broxton, D. E., and S. L. Reneau, August 1995. "Stratigraphic Nomenclature of the Bandelier Tuff lor lhe
Environmental Restoration Project at Los Alamos National Laboratory," Los Alamos Natiooallaboralory
Report LA-13010-MS, Los Alamos, New Mexico. (Broxton and Reneau, 1995, 49726)
Broxton, D. E., D. Vaniman, W. Stone, S. Mclin, J, Marin, A. Koch, A. Warren, P. Longmire. D. Rogers,
and N. Tapia, May 2001. "Characterization Well R-19 Completion Report.~ Los Alamos National
Laboratory Report LA-13823-MS, Los Alamos, New Mexico. (Broxton et at. 2001, 66603)
Clark, I. 0., and P. Fritz, 1997. Environmental Isotopes in Hydrogeology, Lewis Publishers, Now York,
New York. (Clark and Fritz 1997, 59168)
Dethler, D.P., 1997. "Geology of White Rock Quadrangle, Los Alamos and Santa Fe Counties. Now
Mexico," New Mexico Bureau of Mines and Mineral Resources. Geologic Map 73, 1 :24,000, Socorro. New
Mexico. (Dethier 1997, 49843)
Kendall, C., and T. B. Coplen, 1985. "Multisample Conversion of Water to Hydrogen by Zinc lor Slable
Isotope Determination," Anal. Chern., 57, 1437-1446 (1985).
LANL (los Alamos National Laboratory), January 31, 1996. "Groundwater Protection Management
Program Plan," rev. 2.0, Los Alamos, New Mexico. (lANL 1996, 70215)
LANL (Los Alamos National Laboratory). May 22. 1998. "Hydrogeologic Workplan," Los Alamos, New
Mexico. (LANL 1998, 59599)
January 2002 40 ER2001 -0960
R~ 0 I. "''ti!l ft ~ c_..~W<., t';.e.sJ!kotnbftf Hl':ii~~ 'lttoC~ Urt~ll~tl1tcttS t4y4ro!M; Ot4tlt~Cte11tbe~ fllht
~ f~' t.r~ Njfm~ ,_,,~ l.At~Qrl'tk,--; 'lof;()rt lA 1l~·M5. LMI AIAmOt. Ntrrw ~
....... ·""~ ,.,. ~ .. ~,,.,
~--." "' Qllt!O A R ( ,.,..,._. .. ~~..~., 1'4~7 'fltudy 0' h:ij)'(JIIIItQf\ 'lHd Aoch.ot9" In~ 5()lt
V~ (.~"till Tf~ tw.r Jku:o Uf..A · "':£r'tvlf(lfl O..QI. 21J. 147·1~1 P997) ISh-_,..,.,. and
~ ''"' &.6013t
~. R A. H A Katt(*lll IW1d £ K ~- 1$1192 •EJtrac1/IOO loctlnJ.Q~.W fOf Oete~ of 0•~·
tt tr1 W•* u.n; PtOfl\'~ 6\Ma VIM6." Al\lll Chllt11 . M. 82iHS31 ( 1'*12). (~ ec ,_ 1W2 • ...... ~. 'If . I '-'«:llJ,. •"(! 0 v~. 2001 "'Hyctut'"'" C:an.Gu<:trvlty va. Geofogy in N.-w Lot~
w•• 141Dtltr~}. ~ MflatOO ~ SocfOfy ~IOQ J.4ofl110Q Abftractl, p. 32. (Slone et •. 2001,
'00101
W~nfll. CLAW \..raughfln, O.P. o.thcef. AncJ M. HeiliOf. 1996. "Temporal BlldGoochemtcal Ttendt
o1 C....vat en Vi'* Rod~ Canyon and the PRianto Plateau. Jt;muz VolcaniC. Field, New Mexieo. USA,* New
U.J.tOQ 0.~ S.X...!r ~. 4~ ftOid Conf•ronc4t, pp. 2~1·261. (W~ et at 1997,
~n•
41
Cht~fi)Cht~llnfJOrl W.st R·?3 (:()•'f1PI;Jfj(W'I Rlr/J~tlllf _. ......... _..~~-·-.,... __ ....,....~ ..... · .... ,_..,.,.,. ............ ~-"-~"'- ..... - ... -~··" ,. ~
Appendix A
§ •
~ .. ~ § ,. •
IIH•Tri
~ ~ ~ " "
()<10 opm "'"" Ill I~ _, 10' trl-<,.""' hot 0r111._ """'10 711_, 18' ,..,.,_Ill!
T "'"" 11 lllr .....-.g In 1 n
.... ,.,.,.. I J lllr (.Mnglo 2~7
"""""'"' 1 ~ v~· """"''I Ill :1113· Hy"'- .,. """"' """~'"
Onl-"""' In 1264""""' 12 25' ........... ""
s- """' lo ln-cxno bll Allafo>pt to .av ......
~
1 rlj> OUI ln....,... ly1>1.... -IIGt 13 3/8' CM"'Q to '110· lr!r ¥l<1eo tog
He.o<!•..,.. 13 'lie' c.nomg 10 514· and l8nll ~ lr!j> ovl 14 liT u.,.,.. ,_,., 1~
Fnltl -.nang i ~·d'*<'"'"ll *"" 10 1,7,,_, 1><110- TO • I~
F'"'"" ~g !\Ill"- """'9 "'"'tO 1/TII.,._Ili!ID llnOI TO • 1489"
~-- veoP"Y"'C"' "'W"''' ~ ll<nii'CIIII S.<411or_,...._
eor_.. -...g eMU'UIIo grouno surlace
.. 11"11"'--...,.,_,
APPENDtX A DIAGRAM OF SITE ACTIVITIES RELATED TO PROGRESS
ER2001.«JBB A·1
\:
.j.
'~l
.· ..
January 2002
]_ ...
January 2002 A-2 ER2001..()116()
Appendix B
Acti\'itit'.\. Pftuzned for R-22 Co1npared with Work Peiformed
~~ 8 •ICTlVOIE.-1 PlA.tmfD fOA R·21 (;QMPABED WflH WORK PERFORMED
R·22 l !
Wor\ P4111 fof tf)rdtt~oiOfi' fl-'<1 lm~mtntttton ' A·%2 A~ f''J11'110 C'Mryon Wofil PIM' PWt . ActvaC Wottl i
~ Olpift ,..,...,, 11u , I{J(J It) ~1(1 ft lft!Q lhll : ftollurualty 1 !.()() 1'1 • 1 <J\61 <';11'1 ().Gplh .. ·1 hJ"1fiJ'\14!'(~ ~ I '~0101\:!1 ilaQulfOf ; 1489" bQ' I
• p44l'l 11110010 !COO fl) i l Ontllftl....,.... +A~,, •QtMy : Mcrltkxlll may -~Au ••;tmv rrtf'Jifk_,. >15A ~ trr~O k">l
: 411111111(1 I llldu<kt. but ,.,. 001 1 •i 7 fl Flui4·0$MIMd ·
! I' I!MIIed Ill ti!),ll, #tlf· i ltlf·fQWy RC ~ l , rolaryi00eiiJ54rnhu. ; wtca~~tnQ ad.<etU I i 1 alt-totDry!Oarber "''J. i from 47 to 1489 n 1
-. .. oiC... ! ,_,. 1 ::-:-;."'..... \Imp,.,.,,;;~;.;-.;;.- +,.;~;-.;;;;.;;,;--j
:.~.;.. 1:::.: Jl'""'~~ .. ~ ..... i-:.~o;-=:-11_::;',;;.-.;,..,. I I : trom oor.. WUlngl. from core i from core. cuttlflg$, cuttii'!QS from 0 to
! j drillng perlonnence 1 geophysical logs and 1489 fl I dntllng perfonnanc:e
~=~·l=~::..b;· ~~~~;:::?r::~y- :cw~~~~:::n- =::C,~-zone :tor Contomtnent I uturated rone Well cadi saturat1td zone, each saturated zone. regional ,, ller table l An•l~ J to btl $ampk>d at frve zonos assumed. The geochemistry at 883 ft bgs. Two (2)
I i con'lp4M~Qn and at r,ix Number ol sampling 1 project leader and water samples
I month ~ala tor 1 ttvents ahoer weft II technical team INiU c:oNec$ed fof I two yeara complflllon not determine the laboratory anafyais
1
1 speclfted number and , dunng !he drilling locations of samples phase at depthS of
1 based on conditions 883 ft and 1489 ft encountered. The bgs. number of sampling
events after well L l, complviloo is not
----------- ··---~-·------------ ::;....;::.:: ____ __,
fR2001·0960 B·l January 2002
~ .. ~
Chii••ICft.,·rJ~IIrOil h'C'II 1~-;!.'J Compltofron l~rflol! ., ........... ~ -~ ... -
f Work Pl•n lOt
RU
I ' Activity I ....... . P~•rl1o ConyCMI
ti J'l1ft?IOIV9'(
ViCfrt. PJati
,.,..li.! lft~Jift ........
I Woter Sample
An•lv-111
I
lr.o. £1om.nltw .......
AI. Sb AI> 641. !kf U
Cd. Ca. C• Co <:., Fe. Pb. My. tig. Nt
K, So. AQ. 1'1111. Tl. Tr
lt;.t)l~M.f.Cfft'\ft'llf~ f I!
.;J/'M'l I It ~tatrtf!l.o-'1
',.,. f ... ,.,..., .. ~.
!lJ. V. Zn
Ank>na: 8f. CIO· ..
CI.F. NO,, PO •. HCOj. SO.
Other lnorvank; Cttemlc .. •: Sl.
· eyanfde I Stable and I RadlogenJc 1 l.atopM: "c. ''c.
31CI. 0/H. "01'~0
Redlonuc:lldee: ,H,
eosr. ' 3 'Cs. 7..)4U. 1311U. 23eu. ~)ljPu. m.~Pu. 14'Arn.
gamma spectrometry. grO&~
alpha. bela. gamma
~'<1··~ '" ·"'''iffll)
~"""'"' ,..,,.~.,, ll
Aptl<'f><~r. ;/Ill '*'"J • t '"'JI'Ifl.-; U,.rtlf.•:,.,lld10
,,,.,f,if' ~~- ~" ......
lntlum
#onlt(~ tl4 1.1 1·1
I•(J, ~;.r ;, tjf,.}, '~),
ffJI·I.,
M•to'C_.~.
Ot~rlnat~
c,.,. ..... :c~ 6l.tJM and
A~IC
••otor.--: ·•o ·•o CYH. 'NJ''N
A.odiOIIu< liOn:~"T,_ 64 'Atn. "'C•. -'•'Pu. """J~Pu. , ... U.
'"u.n•u.~
, !>'WKIJOfl'>«itl'; ~MS.
ld!Jha. 9 r 1»6 -bOf.a.
............. ""'u -v ....... ... .... f'W ~
... ,..,.~ ~ .. .,, ...... ..., .... , ..... C.lf'& ..... ,.,_,
........ ~ ........ ;
"""' ...... ... , grOM ~IIMIA. Wl.lll
; Ufl\lll\.fi\'1 by ICP'MS. . lot.alur~ by ~PA : s..mc- • ~ .. I
·o,~tc
Compounds: V()Ca
rK>Iyr:ydK aromaoc
''vtltocarbonll. , ~)(Jsb<:JdewPCB•. ~t£. .
tlUflliC aad. loCal
OfgantC carbon
Organic Compounds: pesticides,
polychlorinated
biphenyls <PCBs),
L VOCs, SVOCs. HE.
dissolved organic 1 carbon
--+-------.. -+----- .......... - .. -·-·--.. --... _, _____ ....__ __ , __ , __ .. --1
Water Sample Fwld Alkalinity. dissolved 1 Alkatrrvty. pH . Speatioc ,,.. ~ 4A., \
I . Measurementa o~. pH, spedfic sped1lc : c()O(Iudance, pH, ~ I
conductance. I conductance. ; temperature, tvrtldty! bf~., ..
temperature. turbidity temperature. turt>!dity : 1 '*'
~-------·---+------ I ----- ...... __ ............ ______ --·-·-·-·-+----------4
Number of Collect and preserve I T wenly samples of : Up 10 37 1 No core 01 CU1111Q1 !
Cont/Cuttlnp 13 cores to represent core or cutnngs to be <::OtOJcvtbngs I ~ ~ j
Samples Collected major hydrogeologic j analyzed for samplfls pfa.nned , tor ~ 1
for Contaminant units and zones ! contaminants 1n each Number of sampea ~ ~ 1
j Analyala ;::~~J~·=~ ... ... . ~~.!"_L_ ..... _]
Januaty 2002 8·2 ER200 t -Q;IIO
)
r .. '
1 • -- - · ·r -· · ·- --- 1
t R·22 , ~ l. Hy:.~;~ ... ! f~~ lm-~~~--l-. -- -~;~~---: Uppnrrnot'>l r.ample to 1 l race ! No cme G81l.ptc!5
I b• '"""'"" '"' o 'M ! ElemontrJN•Iolo. f- No 1
Adivtty •····· ······--···-· -·- .. 1 CoreSempte ; AnalytH
Wot11 Pl•n tor Pe~,C.nyon
t -- .. ·---·-. ·-·- ··-·· , Trace ; Er,mentt.!Mt~tala:
I 1 AI. Sb. AI.. Ba. Bo. B. raflQ4! Qif compound&; Anions, &le& kltJr"l'lltled ;
1 Cd. Cr. Co. Cu. Fe. deeper U~mple$ to Redlonuclld .. : ~.
lor analy~tt~ I : Pb. Mg. HQ. Ni. Se. be analyzed lor 1tte ! I A.g. Na. 11. T1. U. V. prolience of ec'Sr. 137cs. 2-14u. I 13~U. neu. 2:)8Pu, I
i I Zn rOdiOCtt<Om•slry I, 11, I
and 111 analy1e6. 2302
"0Pu. gamma I I Anlona: Br. a. F.
llntium, and metals spectrometry, grou
ISO.. F 0\Jt samplus to be alpha, gross beta,
i Ot~r lnMpnlc analyzc!d tor VOCo. grost. gamma
Chemlc:ala: cyanide Organic
Stabk.Md Compounds: VOCs.
Rlldlogenic SVOCs
•~topea: ••c. 13C.
•a. DIH. ••01''o RDCflonuclldel: 3H, 80Sr, '''es. ~u.
I n~U. 238U, .,_Pu.
I :r.MI.240Pu. 241 lvn,
I gamma
I spectrometry, gross I alpha, beta, gamma
Organic Compounds: pesticides, PCBs, SVOCs, HE, TOC
laboratory Selected borehole Physical properties Selected unsaturated No core samples
Hydraulic-Property core samples will be to be delennined on materials may be were collected. No
THta analyzed for bulk 5 samples and will tested in the samples were
density, porosity, typically include: laboratory for the full submitted for
moisture content, moisture content, suite of hydraulic analysis.
moisture potential, porosity, partide properties.
saturated hydraulic density, bulk density,
conductivity saturatoo hydraulic
conductivity, and water retention
characteristics
Geology Refers to Approximately 10 The geology task Twenty-eight (28)
hydrogeologic work samples of core or leader will determine cuttings samples
plan cullings will be the number of were submitted for
collected for samples for geologic
mineralogy, characterization of characterization.
petrography, and mineralogy,
rock chemistry. petrography, and
rock chemistry based
on geologic and
hydrologic conditions
encountered during
drilling
ER2001·0960 B-3 January 2002
~r---- -· .... ·- .. -. r . -·Work Pltn for
.. ---~:!_l_v~ -·-· . 1 ..... ~.•1arlto CanyCftl
Geophytlca I neler& lo
I hydrQ9ualogte wort-.
I plan
I I I
I I
t
1-i)•drc.~olog~c
W.lrll Plan
; In IJNII.'I~tl. '>f>~lfl hoitt
' Q(:Ot 'rt:.•(:.fl rr..- .. lu~rr.
(..'JhjrOI,
1.110<:11 ( t<fliiiJII•lllf
' rndu<.1101'1. rvtlura!
: y<trnma. mayn6IK : llUf>(:.(j plibJIIfy,
1 borcholf! coiOI'
: Vl(leotape. tlutd
; IHmpuraturo : (!>aturatoo). 6tngle·
I pomt re~t:>tivttv \ ($alurated). and
' spontaneous ! poten!lal (s.aturatedJ
. In general. casoo · hole, geophy&es
, trlcludcs gamma·
i gamma density. ! n:•tural gamma. and
: ttrermal neutron
!
l\.22 Flek! lmpl.mentlltlon
PI .en . In vcmmnlt.IVflll·f)(lWt I ~-·loglt '.l"' -11f•yf+I<A lllf..iv<1-ot : ~rlt)tff'4CJ Ulltpe!r.
••IHdf Cfl UlfJ"''b':
. 11lt1UC110f1. r11111JfiJI
; gnrnma. mll~IC
; ttur.ccpllbifity.
: borrthole r.olof I VIMotape. 11Ufd ; tempt1rature I Sc-.t'~ . (&aturatedj. flUid l confnla·
i refilltMty qr.aturated). , N Pot i and r;pontaneout i euii'Un Qlfty
i putentiall&aturate<l), I ~ C'~. ! In general. ~- GatnrM~. i hole gcophy&a ! o.n..ty .
l•ncludes gamma· I Eletnenlal Cnpe..n
I gamma oonslt,. ~,
I natural gamma. and : thermal neutron.
(Aefef to R-22 tad 5heeC tor futtMt
detals~
' I cased and opun·hele
f--·-------~-----·------ -+-- - -~------·---------1 inleM!Ia.) --!Water levels will be Qol aaturatoO zone
Water-Level Measurements
I I
i determined for each (regional water tatlletl i saturated zono by was enocu'Jiered.. • I
' water-level meter or Oeplh t10 wafer to lhe ;
! by pressure top of the wetot~Mlie 1-
; transducer. conlnned at I Additional water-leve-l appto!Ometefy 883 II I I rendings are to be bgS based on 11
i made at as many sen. of tour
i borehole depths as oonc:uning ~--
!.possible for vertical level rneasuremenla
gradient made at l1e time 1 detem1inalion groundwater •.es first
1--------4------·-t--··· Field Hydraulic·
l :~dunrwJ~· ---·-· · ... --lsiug ; pumping Slug tests cxniuc1ed
Property Testa
~--------+----------Surface Casing
January 2002
Refers to hydrogeologic woti(
plan
tests may be tor screens 2. 3. ~-
conducted in and 5 saturated intervals
1 once the well is j completed.
--------~---- ·- ·-----l
Approx•mately 20-in. j16-in. diameter mild 18-in. diameter I 0.0., extends lrom I steel casing set to a surlace ca&mg from !1
land surface to 10-ft ! depth of 37ft
1
0 to 47 fl bgs.
depth in underlying I J competent layer a•ld I grouted in place I _j
---1-...... -----·---·--· - ·----
8-4 ER2001.(1960
.. ~ * --- '. ,_.,,. -· .......... , .... ~~·-
•• - •• ".II ••• .,. <-...-=-..\~ ·'' ; ~ ·., ... "
;,... ......
i II. ...
• ·~-·~ ...... -.....
" : ........
' i
·~ .... ....
.,., "'' .• T.· ,-,r~-
:~-; .... Cfl!l ........
j ... 1 I
!i
• ~~--~<HI
•·•
T,
·-.. ,.. .....,. ••• f ...,
~ ,.. ............... j t. t~ .,, o ,, ' w• ~ _,....
. .. .. .. -~. --:~ctuotor~
l
l L-·-··· ------·----··--··. 1 hctlfle .......
!··~of,., ~·
l_
"" "'""'., ~ .,..._,.r....,. 1 tw-a..., I::::'J\II<"Hir11f WI.,.. r
I --~ ~~-f'folr.l
~--~ .. :~ pWI
•
Hrcm~
ll'ff.M .....
c~ ... ,.,, til&"..,.. ··-~ ' .. ~ .. ,. \ .... .., t•Air--• ~tr.~ ~.,( t-.t.-r·~.-. ~.,.,..,,
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........ ~~
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Appendix C
80RE l'iOl E 10 R n
Ill' \I '''"'"'"'"''·'II I \IUII(·\1111-!~ 1\\IHII\\U\IJ\1 Ht 1'\IOI<•\IIII\I'lHIJII I.
1,~, 11 '-'I>\\·\ II H I\\ I -.,I II ,,\1 II 1\"\ I 01 I \AI{ I .·\
Bill{! HOI I I (I( I
T NOll I A 'l'l
DRilliNG COMPANY Sll!*iln 8ro :oy,..at~K StM Q;Jtn 9s()(J
()Hill. lNG [: QIME 1 ~100 CMf IS()!f n•t•nl0!>1 DJQ4
hn•:~h Date I 1100
~)A MPLI~IG f: QrMf T HOD Cunmgs
GROUND ElEVATION f!650 ~II
---ORIU.-ER -JOMioOn/1bofen_ Wll!oQI'I ~00dw1trt1
T Ol Al DEPTH " 148Y ft tt~l>
GEOlOGY PI Vanrmar.
......
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ER200 1 -D960 C-1
Lithology
•;t,•; '~HII<I_C,~ Ml M!ill< 8AN!)fllfl< TUH !0 ~
f'l, v,_,.,_,..,,,_ 1tft' 'J'"Y'''' r.;,tar•\Jf' ptflll (!JVR 7f'2t·"*'¥~ tO(er.
'"Jm.,_.. fret.l~""'' \1"' to ) mm lttl1gth eWJit".J fllbO of ·t 1
., ... ,,_ 1\it'l•oJ,.,.., ~ncJUytts ~ ,, 100Jo mat<. P'ltt"ttCt"t"Jts up
10 1 rrt'rl
()to!; T~HIHfGE M[M8fR BAioiOEUfR 1'\JH !!> 1~
~ ...J u i: 0. e t:>
0 .- ••
., 1 Vok.81"!tt. luft. palft reO ~ 1 CHR &12) wncM rQCil. pUmtUJ ~ - ... 1
hit'-l'tt~!n1' ar~ palft lJrown (5YR !.1'-). up to 3 mm . .e'l()ltd
'ttrf() 3 1 'JO"Ao oumiCe fTaymonta. 5% Nntdtfle uo to 1 "'"'· •
:8 E >-en u
8> 0 £ _:j
•1 "'-"'·· msfu y tme grAt'led Ob12
I)IJI i l5HIREGE MEMBER BANDEliER TUFf !15-
A-4 ~~ 'Joluo~or.IUI! !.011 mat••• gray•&h re<!IS'YR 3121
•~•"'I' A• fraqme~t• grey1on b<owo {5YR 312) end"" 1o 5
on~ .n "'ngth asper.l raho 52. 5% pum.c:e 10-lO'lo
5Cfntd·f18 efld QuiVU' ~Jhenooysts up to 3 rttm
"'' .... ·' J
Obi •v tSHIREGE M!'.MBER BANDELIER TUFF !"· -- 4
47 ~; Volc.anoc IU!I. IJIO~I!lh gray !5VR 8/1 l matr10 .. ~n 10'1> ,
mooe<ate yellowl5h brnwn !10VR !>14) pun __ In$ •• "··,
wi!I<H-d up to 4 mm. a•I>Od ratiO 4 3. 10-ZO'It. c.:oarw
pnen•.x;rysts up to 3 mm of !f4lnlduw and quartz
Obi 1v TSH!REGE MEMBER. BANDELIER TUFF 147
~ 7 ~ 1 VolcaniC luff. va~h red {5YR 4/2) metn• Willi 15'11,
t>•ow•.,&h gray (5YR 411 I pum1C81regmenb. 1 em 1n
length upe~1 •abo o! 2 I sub<ounded. 10'!1. S8nldloe lind
Qu!V\7 llh&noaysl$ up to I mm
':lilt '• TSHIREGE MEMBER. BANDELIER TUFF !57-
#,. 1 Obt 1v
.... ·~
61 ~' Volc;a,.lt tuff woth daCite xenoliths. rnoderlll<lly """' 11• ; , ~ J
sen•fl•ne up lo 2 mm <2'- maftts up to "\ mm. c1~
pumoce dac~e hit• flllll<l·•n lrsctures
Obi h lSHIREGE MEMBER BANDELIER TUFF 167·
77 tr, Volcan1t tull soft to moderately han!, grayo&h orange
"'"" •5VR 11211o mod orange ptnk {5YR 814). 20-25,._
'IQita"•G II'"""- Ufl'pla 15 equaHy ash """ purruoe_ u._
to Onternw~ asDttC.t r&110f!o (due to lafglt ourntc.e Slll!tl. 10..
'~"'- quattz and """"'"'8 2·3,._ ""'fie&. also oonta•ns
dac•lsc fragment•. pale yellowoSh brown IIOYR 612)
Ba""" on ""'"""""of volcano<: glass tnt! Obt fv~ 1g
w~•act "'""~ ""'"''"'" 72 a'ld 82 II
.r ..••. I
January 2002
= £ a. C1l 0
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10~
110
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Ill''" lit ol I I I II'
BORHiOl.E ID R-i:' • I•. ·· ,, · · ,-. ',.:
DRILLING COMPA.NY Stew.1rt Ill(• ·[}1-nilt." ~,,,,,., (1,11" ·,; ,;
DRILLING EOIME THOO CME 7~).F :;,.,,..,,,.,, lJRJ-4
GROUND ELEVATION 6650 5 !1
DRILLER Johnson!Thoren W•lson Wc)()IJ-"'"''l
115.10
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g· ... I ... ·:)
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v·I1C'\.otl~ f,:y _)U!. fedu'6 ]O.J(r-.. sarft1:rAP • ...., 1)...1~
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·~' ~,a ''1 "'JI<A'"'IC tuff w.,. to rnc.-1eJMet)- ....... ., P•"-.-'V
9'Ht IJ'..i""''(.e :~,VR &1, )().)(), vrt•ft!(.)ut ~ tw"" :)·t~c~o; 1 •' -; ·n~ , {J"'c_ S~tn.c;i•~ liM qu.a-tt 1 ~~ kJ - • ~
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TOTAL 0Ef'Tt1 • !41J'ii rr tlgt
<}EOlOGY PI vO"'Irnnn
ltlhology
· Jt•• '' rr JW• tM I.'U(If llAl'f!Jt 11t.P ~lJH • ,,.... '* 11,
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'-"- (ii.>AJf PV""Cf 8£0 1 •te •9>:1 "',........,.. "11"' f#•Mt"HIY·tJ'•yt~Vutwt~ ·~"-~ cntf'WIIca ~
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(.f Ul<r)S Of l "''() ~ T I 19(). 1117 lllj S....,
: • ..,.. ur..-.g. , t(}YJlJJ/2 1 t~ne to Uloai'H a.-.d ~
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• -~..Coon lCYWI lo fb4
•:fi'R""-0£1 RICBASA.ll 1'91·102fiJ0......,
... ,., ~ ~ O<ll'lQII 1 !OV~II-71 ~ 10
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.,, ... ~UiliOI~""" •35-11'-~d ba- .......,.,. - '"""". >'.;( ~ROS 0£L RIO 8A."-''l T 1202·207 "'I Gt-
~"'•oJbr""""""' ''""- ..._.., ,,..,, 30' pumoao ~~CW ... CI~)IIPIO 16
"'"' - ... ~., • ., d~---... "' C..COl ""' •mr ol .,..,,. pnllnOCiyOII
CIJ.tf!OS OEL RIO BASAlT CXl7-212 fl) ea.-. '"~' o ... Q'"Y IN.tl *',.,.,._Ill ................. ...,,.,
'> ,,.,,"' ffU()I,." ~ P"ftnocry.ts quettl ~"
t_fi{_(H cuaJrng •"'<~ oalldllt.nn ~ mflllll ~
I;HtROS OH RIO ft..'SAC. T t212-2'n IIIIIMM
~ .... ,. .. '""""' .,....._ "9'1 c.co, -lll\8 1~ Qldt11.1 fl)
C[ <II~OS On RIO BASAlT 1222·1<7 '111....,
.... ,.~- ftK.tiYI'W')
....... _ ..
ER200' -otltiO C·3 January 2002
BORHtOl E 10 R ·22
Ill\ AI \\ttl"' '1\1111'1.\l I .-\.ltlr~!l.l•Jfl'l
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t flU)\ ''•I l '-'· \ 11 R 1-., \ I \II~,\ Ill ''-'" II M 1 "\ .\ Jo1 I \
liOf.ll!lltllllll,
'1\;(JI.J '" ',.4
DRILl !NG COMPANY St-an 6m ·t>y'lJIIOf. !!,!.11" (),.,,. H n•.• 1 .. ~· r....,_. • "'::r
DRill. lNG EO!ME'THOO CME·T~tforeml)tlt ()R/.& \M • .IV ''•C t 'JVf hl!f....(J C•A'i~
GROUND ELEVATION rm50!>11 c(J'Io!. Ut.t•r•• • ~-••"PP
DRillER JohniiOI'\ITimntn. W;.aon WQ(}(lwf#tJ ·:If ()• f)t'JY P! -.·r-•
.~ j w
: \(1 .f)4:-)
lM)
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270
,..no
300 6\SO
310 H40
January 2002
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DUll iJ~ I()~ Tt«)() CVI 1•.t:;.1 ,_,,.,.,., IJI#;.& ',MJil'l ~~~~. l fJIMf' TIKIU C.l.ifWWJt
VHOtP«< U f: VA I I(~ ()6!)() !o II TOTAL OEPlH • 148ii II D;Jt
Df'lllt:f'l J<JI'r,_.,J"'',1ho•0111 Wflttt'lll W~jlrl) GEOlOGY PI ;;~,.,
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i ! Ltthology
trtr""'"·fll'r-tJI•'fl~'t"N ., •• .f}{J "*.:J!Qf'\ erittr fapnl ..f:::.:J t.r?(JIItt ~nt<f'lllld mJtf'¥: "",.,.,... ~.l:;-':1
r.t nRot; OH 1<10\1~"'- 1 1311-3:l2fl)a- .,_ 111"'"'1' ~;"";~~~
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r,,..! flf()Gtlll ~ f:/),41, Oltdlil .'l(J.oOf IW1 wr..CJ!IlOary ........ ~ 't r·:::·.:: Cli<HQS 0(1 RIO kASAtl 1101] .l21 fl)- r;;::'.'l ,.,,., "'.,'"'~) ~~~l(.:uta,tvm••" ~ f•1()'1. ~ .... D ll'f' V"'lktm.t i o~ 17.,..,.., ofovot'Mr ,....., ~ Pl'f'O'~ .. ,_,.,.,.. tf S •••
") rt.)oF'OIJG ~ ._h, ~..,....!( ~ r~·:·· :1 G£RROS 0(1 RIO BASAl. T 1327·332111-. . , [~:' __ ::.
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growtr\6. ves.an CL)ITifnO"P'; l•ned •'..,... .-.ca ( 'l anc110r ·r:7:;.1'.;l "'"<Jar eiii GUUIOS OE.l R;o 61\SAI. T !332-337 fl) !Ia~ ~• ""r·rj .,.. gra., -"~«. """'Y'1C. l<X.ally ,..,..,_......, ~·· ·~
JIT~fy O•'(.;tl'ed T'le o•!d,,zed PQf"'JOn dorNnelel _, 'f..,...........;
~ ~--
C.lRROS DEl RIO BASAl! lll7-3&01\) Baull. . ;;\::3 """"~ OOIJI'I8a90UII lftOnglr 011-. WI......., . """'_,. Ioiii'"' Clay h""'(' ~ . ..,._ ...,.,._<I f i "":Til ........... "'-·""' ~ .,. .... ~ <10'11.
~- loel Cllcuta!IO'I .. 340'
~;(RROS OE.t RIO 6ASAL 1 (3&0-3A9fli No
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CER~OS DEL RIO 8ASAL1 (3A9-3S2 fl) 8aua,
..._, ... to -•"'Y ~. •5'11. maliC~·
•P'VI._ ~~'""""'"'_. loCM F&!Mn oat<IH «*'""I
·-~ ~JI'&'mo"'O' -.ooM~a~ tlhca -11'..,. ot f}OU'blez-CERROS Oh RIO BASAl.T (3!)].357 fiiiiAult.
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BOR(HOLE 10 R-22
DRILLING COMPANY Sl-1111 8fo t()rn;,"". :;tw! (}..,..., :1:~ 1
DRILLING EO/METHOD CME· 7~)/f(:•r.,...,~l t)R;/'
GROUND ELEVAtiQf-4 6651'H II
DRtL LER John50rlfThoren. Wtti&OO WOO<Jwtt•t:l
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1'>240 CE~OSOEL NIOBASALT I .. Or-4171)....,.._ ~l 1>1,.. ~.,-110YR~I ..,..,., - 1D
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b~'>l)'lt)f!\~1~~ ... ~~ 6 fill~ """ ....0 po!g1)81 aoo. ~~-....a ....
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BOIU 1101.1-. LO< i
TAIOU TA-54 Page 1 ot 21
DRILLING COMPANY Stewan Bro !Dyn::~tec Stan Date 9100
DRilliNG E QIME T HOD CME -750/F oremo!>t DR24 Fm1sh Dale 11/00
SAMPLING EO/METHOD Cuttings
GROUND ELEVATION 6650 5 ft
DRILLER JohnsonffhOren. Wilson, Woodward
g
·~ >
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TOTAL DEPTH= 1489 f1 bgs
GEOlOGY PI Vanoman
Lithology
CU~HQS DI:L RIO BASALT 1437-467 II) S..Uit .
s•m•Ja, to above W"tt• •ncrees•ng OJndshon wlltl cteptrt l ranJo.tlfOt'l fro"' tt"toteu11C to alkahc composltJOn OU..Vf\
w•lhlt'l tr.•t .nterval (l-l!!le Sect•on 10 3 1 of th•& repotl)
C:EF~ROS DEL RIO BASALT o467-<180 Ill &asah.
g•a)"sn blacl< (N2) lo black (NI). 10-15% OIMOe
pt>encx:rylllS up lo 1 mm
CERROS DEL RIO BIISAL T (480-548 ft) B858hie onder
anfl scone. oossoble lt>on lave flows. Abundenl vilnc 0'1der
and o•odized scoria Traces or quartzole aridmetamorpn~c; lolhologoes
Tb4
ER200 1 ..C9tJO C·7 January 2002
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BOREHOLE 10 R-22
DRILLING COMPANY· Stewarl Brc rOynatec Sta<~ Uatr~ 'JICIJ
DRILLING EQIMETHOO. CME-750tForemo&t OR/•1
GROUND ELEVATION: 6650 511
DRILLER: JohnsonfThoran. Wilson. Wooawaro
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GEUtOGY PI Vlft.<WrW
Ulnology
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Ohv.ne vp to 1 mrT' brow., pyfOJI'tf\4!. ~ 0.0..
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ORil LING COMPANY S1t~w1tf1 Bro !Oynaler. Slart Dale 9100
DRILLING EQ/MEiHOD CME ·750tF'oremost DR24
Page13of21
F 1n15h Dale 11100
SAMPLING EQIME!HOO. Cun1ngs
GROUND ELEVATION 6650 ~ ft
DRILLER Johm.on/Thoron W11son. Woodward TOTAL DEPTH= 148911 bgs
GEOLOGY P.l Van1man
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Lithology
('f PROS OEL RIO BASALT 19:;5.953 It) Basalt
<Ia" IJray 'T\8'S•~<e. PO'P~yntoc wl ep!laMoc groundmAS•
o~noery&rs cf fekJspar. pyro•ene. ana otnnne (?) <5% Dy
\'Uurr~ .-= e/Mn OJ.11les. c.oaung fractures
C(FIRQS DEl RIO BASALT 1963·968 ft) Basell.
'JJ1'11 gray maft{ .gneou~ rOCk. apl'lantbc apllync to Wl'JaJdoy
<YJ<P'l,.toc P'le'lOCf)''ts of plag•odase and ferromegs
struc.ture massrve. non·vesJCular
CERR05 DEl RIO BASAlT 1968·970 II) No samrn., reawery
g -J (.)
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CERRCS DEL RIO BASALT (970-97311) Bese" . eonlln!flc. d• gray tNl). ap~yroc. mass•ve. tocelfracture
surfaces s~ow o~•dahon tt· s•hca coai!IIQ. Tb4
,,.,.,
,~,.
'Mil
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..... '""
CERROS DEl RtO BASALT (973.978 ft) Besan. med gray tN4;. ap~anofoc apruyoc to weakly PO<~ynbc
rare vesiCles
CERROS DEL RIO BASALT 1978.983 ft) B3!1eft somolar to above. rare ves•des wll0c81 amygdatOo!lel sloCll
lor quaru greons as xenocrysts)
CERROS DEL RIO BASAlT (983-988 ftl Basatt .
massove. a~a~•toc rare small vesiCles
CERROS DEl RIO BASAlT. 1988-998 "' Besatt.
dk gray (N3J l'l'ass•ve. weekly pOrphyntK: w/ a~andlc
! groundmass. phenocrysts of feldspar, pyroxene. and
olovone 1·3% by volume
; CfRROS OEL RIO BASALT (998·1003fi)Basalt .
. dk gray (N3). n•ass•ve. porphyntoc wl aphaniiJe
groundmass. pneoocryst& of feldspar. pyroxene and
; OhVIhe 1·3%
C:CRROS DEL RIO BASALT 11003·1008 II) Basalt.
dk gray IN3). mass•ve. rare vesiCles. weakly porpl'lntoc.
· phAnoetysts ot feldspar. pyroxene. and ohvtne are <5%
, by volumt~. rare quartz xenocrysts
CE RROS OEL RIO BASALT 11008·1013 II) Basah.
<lk gra·t (N3f mass•ve. ao!lyroc to weakly porp~yntoc wl
aphantoc grooJndmass rare soherocal amygdules filhng small veSICles
CE:RROS DEl RIO BASAlT ( 101'\.1018 II) Baseh.
dk gray (N3). msss"e eol'lyr•c 10 weakly oorpnyntoc
ER200 1-0960 C·13 January 2002
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DRILLING EQ!METHOD CME·l~OiForerno~l DR:.'4
,,,.,,r.Oa'te !t:(f,
· Jd.IP1 !'~(, I fJ•MI. 7 •100 r,,Jl'"'"olt
GROUND ELEVATION: 6650.511
DRILLER Johnson/Thoren. Wilson. WOOdward
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,, .. pnty 1N ;i rna~llwe potpnyt~tlt. ,,..; a.pn.an•
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tJI'"'"'~ pOMiolbl'f ptftM1'1l atkrlldar'lf fe.'Mn O•ldeS V'
lra-::sure .,ur'laces
Cl RI<OS OEL RIO SA~. T i103J·I038 Ill 8aMIII
';mrlar to abOv$ bulltld\Jdl~ aeon!' ~ F a•t.tn ()IJ-dei
roah"Q 3Dlr1ld.A'll fra<.Jure suf"''Aelt• ~ '""""' arne ri'
~s,c: W"O'C.8'llt. rr;.;;: prf:!os.ent ptus bi.at".JII ~
('(PROS DEL RIO BASAlT cl038· I ().I) ft) Saul
o:Jom.oanlly popnyr•I•C ocona sttong f WMn o•-~
.abundaol lra<.1u<. ..... 20% o! o8rtodM ,.,., ..,_.,
\Jrver~ I'()C) tyPf)S P3rtf'1 8"'de511P k) daCf4e wert
V!troptlyr~!.'}
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