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WA9302-LR 960405 SHIMEK, JACOBS & FINKLEA '\ CONSULTING ENGINEERS .~ ROSS L. JACOBS, P.E. 7~ RONALD V. CONWAY, P.E. JOHN W. BIRKHOFF, P.E. JOE R. CARTER, P.E. GARY C. HENDRICKS, P.E. C. L. SHIMEK, P.E. I. C. FINKLEA, P.E. JAMES E. LAUGHLIN, P.E. Natgun C rporation 1W1;~~assachusetts 01880 Re: City of Coppell Village Parkway Ground Storage Tank No. 2 Gentlemen: We are enclosing one copy each of concrete mix inspection and compression test reports prepared by Gee Consultants, Inc. We direct your attention to Concrete Report No. 147, dated April 4, 1996. This report concerns concrete placed in the west dome ring on February 22, 1996, and indicates the specimens achieved an average of 3,145 psi in 28 days. This is well below the required strength of 5,000 psi within the 28 day period. Please review this report and notify us of your intentions concerning these results. Gary C. Hendricks, P.E. EOTECHNICAL 10046 Monroe Drive · Dallas, Texas 75229 · (214) 352-5433 · Fax (214) 352-6972 I. .EPORT ()F CONCRETE MIX INSPECTION I~','FI}II Date: April 4.1996 St;mdard 6"xl2" ( lit'm: ('ity of ('ol~l~cll Area 28.27 Stlunrc htchcs I' t,~cc~ h.I) Million Gallon Water Shlragc T;mk ' ( ;tllll:lClOl': N[IIgHII C{lrl)ol';llioll (',merck: Sulq~lie~ and Iqan~: RcdiNlix Concrete - tqanl ~1 I. nc'alion of l'htccmcnt: ,ItlilllS Of Wall and Dolne I'anels ~/i ATERIAI,S ~ ........' ";""' ""' INSPECTION DATA II,.'~cl'iI I1( It IIItS/('It 5,.> Numlw~: hW7 Time Sample Batehod: 9:04 am { o ..,n- Time Salnpled: 9:50 alll SamPle I.t~cation: Dome riug (West-end) I', ,'~:,h: Truck/Ticket No: [9]/I0501 I~ k'~mcdiinc .,%:Jgn.:J:nt. Ambient Range: 65~F [:tl~.~ Aggregate: Concrele Range: ~ dl .I XltllC~' Shmq~ R;mg~ (inches1: 2 ~" Wc;tthcr Conditions: Clear Time Slarlecl: 7: .: Time Coralfitted: I 1:45 inn ~tldcd XVilIui': () Samlilt Air Coiltent (%): Total Cubic Yards Placed: 18.0 C.Y. Required Strength (Lbs./sq.in.): 5,000 psi "EOTECHNICAL E GEE Consultants, Inc. EI NVIRONMENTAL 10046 Monroe Drive · Dallas, Texas 75229 · (214) 352-5433 · Fax (214) 352-6972 REPORT OF CONCRETE MIX INSPECTION licl ,,~l I)~nc: Al~ril 4.1996 I~,lc C,ncrctc I'laccd: [:ebruary 2 1. 1996 Standard 6"x12" tlit nt: City of Coppell Area 28.27 Square Inches I' ,,~{'t: 6.0 Million Gallon Water Storage Tank Concrete Report Nm: 146 ( .,~;u;,cm~ Natgun Corporation Project N,,.: 95-0196 (.u;c~ctc Snl~plier and I'hml RcdiMix CoilEl'tIc - Phmt g l l ,)~illitlll Ol' I'laccnlcnl: Wall Sh)ts ............. MATERIALS ~ ......... '~"~" "'~ INSPECTION DATA ~li> Numl~cr: (~8t) Time Sanll)lc Batched: 2:10 pm C emcm: Tiinc Stunpied: 2:30 pm Sample I,ocation: g16-22 l-ly Ash: Truck/Ticket No: 170/104 17 Coarsc Aggregate: Temperature: h~tcrnlcdialc Ag~rcgalc: Ambient Range: q3°F [:m,: Aggregate: Concrete Range: 81oF r~ thnixlurcs: Slun~p Range (inches): 7Vz" Weather Conditions: Clear Time Slatted: 10:30 am ' Time Completed: 4:15 pm .,~ d{~t'd XVillcr: 25 gal. Sample Air Content 'l',lal Cubic Yards Placed: 23.0 C.Y. Required Strength (Lbs./sq.in.): 5.000 psi . Nunllx'~ %hm~p [m~ ,l);~)s) Itsted (I,bs.I (I,hs./Stl.hl.} 7~VT 500 7 t,)" 7 02/28/96 191.720 6,760 'WT 5(}1 7 ~/3" 28 03/20/96 191 ,280' 6,770* ;WT 502 7 %" 28 03/20/96 191,640' 6,780* I'Nl~'tl 'lt){'lll dhfic';~N~l,'dlllhcnU',cl {~lindcr~Madelly: li tillill'kS alld/ol' Distrilmtion: Slump was I" I~c[orc suitor was added. *Tests were nol carried otll until l'ailurc. · W~' EOTECHNICAL E GEE Consultants, Inc. E~ NVIRONMENTAL 10046 Monroe Drive * Dallas, Texas 75229 · (214) 352-5433 · Fax (2!4) 352-6972 lIEPORT OF CONCRETE MIX INSPECTION . l~Cl'tnI I):nC: /\l~ril 4. 1996 l);|lc Concrete I'htccd: February 21. 1996 Standard 6"x12" C li~.nt: City ~1~ Coppell Area 28.27 Square h~ches P ',~.tcct: 6.0 Million Gallon Water Storage Tank Concrete Report No.: 145 Co,re;rotor: Natgun Corporation Project N..: 95-0196 Cantitle Sulqfiicr and Plnnl: RcdiMix COI1CI'CIe - PIalll ~l I_ncalion or Placement: Wall Slots ~ 'I ATERIALS ,~ ........: ,,,,,d, ,,.,.INSPECTION DATA l)c~cHptinn 11 hs/('it N 'i' ~h:mhcr: t~M<~ Tilnc Saml~lc Balebed: I:00 pm < ,'~ tcn~ 'rinse Sampled: 1:30 pin Sample Locati<m: g4-15 I lv Aqu Truck/Tickel No: 189/10406 ( ~,i~sc Aggregate: Temperature: h.tcrnwdi;ne A~grcg;ttu: Ambicnl Range: O3~F Fro,: Aggregate: Concrete Range: 82°F Sltm~p Range (inches}: 63A' .'~ kll;itxltllcs: Wc;fihcr Ctuxlitions: Clear [ Time SIal-led: 10:30 am 2 Time Cnmpletcd: 4:15 pm ~ ddcd Walcr: 30 gal. Samlfie Air Cnntcnl ( % ): Tolal Cubic Yards Placed: 16.5 C.Y. Required Slrcnglh (Lbs./sq.in.): 5.000 psi N'qunl,vl Sh fu II' ' u l ' I I ):t) ',~ 1Cstcd I l .ll'.. ) (I .bs./StI. In. '\VT 497 6 'i" 7 02/28/96 181,280 6,410 '\\;T 498 6 v; ,, 28 03/20/96 19 I, 120* 6.760* '\\;'[ 499 6-!,," 28 i)3/20/96 191,200' 6,760* [:.cmarks iuld/ur I.)isll ihution: Slunll~ was V_," bcl'n~c .suitor was ridded. * Tcsls were llt'd c;trricd out until faihu-c. [~' EOTECHNICAL E GEE Consultants, inc. EI NVIRONMENTAL 10046 Monroe Drive · Dallas, Texas 75229 · (214) 352-5433 · Fax (214) 352-6972 lIEPORT OF CONCRETE MIX INSPECTION Relmrt Dale: Al,'il 4, 1996 I)atc Concrete Phtced: February 2 l, 1996 Standard 6"x12" ( licnt: City of Coppell Area 28.27 Square Inches P 'oWc~: 6.0 Million Galhm Water Storage Tank Concrete nep, r~ N,.: 144 ( ,mlr;~cl{, r: N atgu I1 Corporal iOI1 Prnjcct No.: 95-0196 ( ,mClclc Sulqtlicl ;ttltl I'huH: RcdiM ix Collcl'clc - Phmt ~1 I .cation ol' I~luccn~cnl: Wall Slots ............................... P 'I ATERIA LS ~ .........~ '~"":" ""' INSPECTION DATA I ~c~c~ il,iun {I .bs./Cu .......... N 'i' Hunfi~cr' (~S',q Time SanliMe Bateheal: 11:55 am ( ~ ~::m Time Saml~letl: 12:40 pn~ Sample I,ocalion: g31-37. g l-3 I% Aq~: Truck/l'ickcl No: 160/1(}396 t .;r~c A~grcgak': Tcml~crature: hacrnlcdi;ite Aggrc~alc: Ambient Range: 93~F ~inc Aggregate: Concrete Range: 82°F Slump Range (inches): 8" ,4 dtnixturcs: Weather Conditions: Clear ~ Time Slatled: 10:30 am 2 Time Completed: 4:15 Added Wuler: 20 g;d. Sample Air Content (%): 10.0~ C.Y. Total Cubic Yards Placed: 5.0 C.Y. Required Strength (l.bs./sq.in.): 5.000 psi Npc~inlcn I%lc:lqih'd .%!!c I)aic ]'lll:ll l.,:ul ('(TIIIl~fc~;~;i','C Nlrctiglh Rcnlaiks Nutnbc~ %huul~ tin~ tl);~} Ics~cd {Ibs,) (ll~s./Sq. ln, I WT 494 ~" 7 ()2/28ig6 140,360 4,91iO W'F ,195 ~:" 28 (13/20/U6 172, I00 6,090 { WT 496 8" 28 03/20/96 173,100 6,120 AS 1M I -311 39.(-14; dqdc~s Nolcd ( )lhcrxx ~,k'l { 'ylintlcrs Made By: S, J. 1; eraarks and/or Distribution: Sltmq~ was ~" I~elbrc super added. ' [~ EOTECHNICAL E GEE Consultants, inc. EI NVIRONMENTAL 10046 Monroe Drive · Dallas, Texas 75229 · (214) 352-5433 · Fax (214) 352-6972 REPORT OF CONCRETE MIX INSPECTION I~el'~{u't l)ate: April 3. 1996 I);.c Concrete I'laced: February 21. 1996 Standard 6"x12" Clicnl: City o1' Coppell Area 28.27 Square Inches I' ',Uec~: 6.0 Million Gallon Water Storage Tank Ctmcrele Report No.: 143 C.n.ac.,r: Natgun Corporation Project N..: 95-0196 ( ant role Supplier and I'lanl: RediMix COllet'tic - l>lalll ffl [~cati{m o1' I~lncemem: Wall Slots MATERIAI~S s...,. ,,;.,d. ,,.,~.INSPECTION DATA I )csc ~ ipl ion { I b~/( 'u Yd ~ ................... ~ ',i.' Nttml~cr: 68g/M ix F Time Sanlplc Batched: 11:00 am C cr I~nt: Time Sampled: 11:30 am Sample Location: ~23-30 I ly Ash: Truck/Ticket No: 147/10382 C ~;,t'se Aggle~ale: Teml}erature: hllerm~di~ne Aggregate: Amhient Range: 93'F Fmc Aggregate: Concrete Range: 80°F ~dmixtures: Slump Range (inches): 7V2" Weather Conditions: Smmy I Time Started: 10:30 am 2 Time Completed: 4:15 pm ~tltted Water: 20 gal. Sample Air Conlent (%): 4.5% Tt~lal Cuhic Yards Placed: 5.0 C.Y. Required Strength (Lbs./sq.in.): 5.000 psi Nlmd,cs ";Is,hi, (iu, tll;:.,,*sl I'cslcd (I.I,s.) (I l~./.%q.ln.) ( '%~'T 491 7 '/~" 7 {)2/28/90 167,600 5,930 !%%/T 492 7 V2" 28 03/20/96 190.700* 6,750 ( :W'F 493 7 V;" 28 03/20/96 186.320' 6.590 ,\:.,I [',1 ( 31 (' .it.. 14t rl IIdc,.s N,,it!(I ()lhcrv, i',t'} C'Vli~,dcr,; M,ndc Ily: D .J./S.J. lienlarks and/or I)istrilmii{m: Slump ~vas '/_." bcl'{~rc suitor added. · Tcsl was n{~t carried otll unlil I'ailure. c,': Mr. I.an.'y Davis - CiLv t~t' Colq~elt Mr. Gary Ilemhicks - Shimek. lacc, Jls and Finklea · [~ EOTECHNICAL E GEE Consultants, Inc. E~ NVIRONM ENTAL 10046 Monroe Drive · Dallas, Texas 75229 * (214) 352-5433 · Fax (214) 352-6972 ]51.EPORT OF CONCRETE MIX INSPECTION I,'cI'DIt 1)ale: April 3, 1996 I).lcC<,ncrc~c I'laccd: February 19, 1996 Standard 6"x12" C licnt: City o[' Coppell Area 28.27 Square Inches l't-~,.~cct: 6.0 Million Gallon Water Storage Tank Concrete Report No.: 142 (~m~,'acmr: Natgull Corporation Project No.: 95-0196 Concrete Supplier and I'hml: RediMix Collcrete - Plallt gl I_,cation t~t' Placement: ])ollle Slots ......................................... MATERIALS ~ ........' ""'~'" ""~' INSPECTION DATA I }cscriplion (I,bs/Cu. ~ d) hliY Number: 687/Mix C Time Sample Batched: 8:26 am ( emcn~: 'Fime Samlfied: 9:12 pm t-iv Ash: Sample Location: JK rings Truck/Ticket Nt~: 192/10159 hac~mcdi;dc A~rcg:m': AHIbicnl Range: 60~F Im:. Aggregate: Concrete Range: 65°F ~ dmixturcs: Slump Range (inches): 3 ~" Wealher Conditions: Clear ~ Time Started: 8:30 am 2 Time Completed: 10:15 am ~tlded Water: 0 SamlMc Air Co~llent (%): 3% Total Cubic Yards l'laced: 5.0 C.Y. Required Strenglh (l,l~s./stl.in.): 5,000 psi NHIII~/' Shlllq~ fin; (I);lys) I'c~lcd (I,h~) (I,bs./Sq,hl.) (:W'I' 488 ' 3 %" 7 02/26/96 101220 3,710 ('WT 489 3 %" 28 03/I 7/96 144,580 5, I 1O (:WT 490 3 %" 28 03/17/96 146,280 5,170 X~ [ M t 3 1 (' l~;.{' 111 I 1 hfics~ No{cd ( )thcr~ i~c) Cylinders Made B)': K. M c. ~ cmarks and/or Distrilmti,.m: