9-01-16;09:17 ; ;+61 2 8248 5899 # 1/ 4 ™OMSON GEER L,al :4 1 CCENT,il Sh* SOV *W 2000 AL.D.il 00 Ba 2 83* PH¥ 221 T 121@485100 P*"2*548.80 01"i DRZ: OW:3757680 19 January 2016 Coffey Intern,6onal umb,d 4- Nork,n Rose Fumright By Imall Level 18, Groevenor Plice 225 George Street SYDNEY NSW 2000 AB"Zon: Mr. JohnEIOU and The Minager Company Announcements Office ASX Umlted Lmel 4, achange Centre 20 Bridge Street SYDNEY NSW 2000 Dear Slrn 05-market tnkiover ofmr by Tet,a Yech, Inc. for Colky IW Limlmd ASIC Form 004 and notice of chinge of 61&,reits under Instmfdonal Acceptince Faclmy We act for ™ra Tech, Inc. Crein Tech) In r*tion to Its ofT-market takeover offbr (Offor) under Chapts 6 of the Comofa#ons Ad 2001 (Cth) (Corporations Act> for al the ordh,ary shaci (Correy Shares) In Conk,y Ir,tarnutior al United (ACN 003 835 112) (Coffey). Please ilnd enclos•d ASIC Form 604 (Notice of change of Aterests of SLauets,tial holder) from Tetra Tech In aooordance with eection 671 8(1) of the Corporutions Aot We refer to the limtittitional acceptsice fac014 established by Tetra Tech on the tarms set out In Itt First Supplemer*y Bidders Statament dated 27 November 2015 (In,mutional Acceptance FaclIty). Since Tetra Tech's ASIC Form 604 and notice of change of h<Brest» under Insttallonal Acceptance Facility dated 18 January 2016 (Pr,vious Noace), the aggregate of. . the number of Coffey Shares h respeot of whlch Teh Tech has received prrift,noe ins#EcUons under the Inabimonal Acceptance Fac Ity On the form of acceptmci forms and/or dhctions #3 custodians to aocept the OW ([AF Acclptances); and • tte number of Cof! y Shares 61 which Tetra Tach h= I relevarrt h,tar st(Rll®vant Ineer,lt , h= changed as set out in the folo%vIng t,ble: .1 4*VIM,Ino„me I IliOiI I Adelaidi AAIN 21 442 367363 11 1 9.Irres Dall.*90011. Il'. Ull#*SIgnit_;! 9-01-16;09:17 ; ;+61 2 8248 5899 # 2/ 4 THOMSON GEER Category 2 Prevlous Notice mb notli = at 7:00pm (Sydney#no) on 16 Janualy 2016 m at 7:00pm (Sydney time) on 18 Janua,y 2016 p.,con.ge of an pme.n.ge of ao Numbw of Comy Shar=* Coffey Shares Coffgy Sha ri' 5,177,470 102% 9,478,788 3.71% 93.4896 289,183,801 91.6396 234,423,524 243,902,310 244,341,271 96.54% 96.61% Numb,r of Coffey Shares IAF Acceptances Relevant In'rest Total A/27"118/2*m"'Fl'i 7 a m0wl//I'llow//1 In accordance with the terms of the In,011,tional Acceptance Faolity, Comput,rshare Cleerlo Pty UmltBC' as the fac[my operator under the Institutiorml kceptance Fadity (facm:y Oper=Sr) holds the IAF A=aptances as accept,nce fwity oolkdon agent and must del ver: - the acceptince forms It holds In aocordance with ele Instructions on them; and • the oustodhn d ections It holds to the devmt oustodms (directing them to accept the Offer), liwiledlately after Tetra Tech gives thi Fadl¢y Operator wrlttan notice th,t It h= deolued the OfFer free from al defeating conditions that have not been flimoid or wdved, or,40 deCIEn the Offer free horn au defeating concmlons th,t havu not bain flilmid or wiid no latsrthan thi Arne thst al MF Aooeplaces lodged with the Flclity Operutor are processed, (Connrmation Notice), IAF Acclpti )MI may be withdrawn at,ny Urne before the Faclity Operator recelves such Conf mation Notice A Conmma* Notice wmi gh,en by Tetra Tech to the Fac[!Ity Operator on 15 January 2016. As a result IAF Acceptilices may no longer be withdrawn. Unm processed, LAP Aooeptances do not conslah fbrmal soceptaic- of the Ofh and accoangly, the Coffey Shares In wtgch Tetra Tech has a Relevant Intarest (as set out In the table above Ind In the ASIC Forms 604 lodged by Tetra Tech) do not hlcludi Ute Coffey Shares which are the subject of IAF Acceptalices. Yours fal»1#Jity THOMSON GEER David Zwl Pidner T 461 2 8248 3414 M 0418 284 143 E d.*I#..40.Ju Lag/R//294131 19-01-16;09:17 ; ;+61 2 8248 5899 D-l 14 # 3/ 4 18 My 2001 Form 604 Coiloido- Aa 2001 Notice of change of interests of substantial holder 001/1/.".ImiL"..4 Cosm 112 1. I. oli„/Ii,in mall/H) ACNARSN / *0100610) TIn TA k (™rm Te* NiA F-iachq,ht/**0/' ...ak m 18 Juy* 2M8 910 ...dI=,=0. 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