PREQUALIFIED*GEOTECHNICAL DRILLING CONTRACTORS*Prequalification for exploratory geotechnical drilling and sampling relative to project design.Prequalification of contractors for project construction drilling is issued separately throughPennDOT’s Contract Management Division at phone number 717-787-7894.Each contractor is responsible for keeping their information current by promptly notifying thePennDOT Chief Geotechnical Engineer’s office of any needed updates of your company informationby one of the following:By Mail:Chief Geotechnical EngineerPennDOT Materials Testing Laboratory81 Lab LaneHarrisburg, PA 17110-2543By Phone:610.205.6703By E-mail:[email protected]

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompany7NT Enterprises, LLC3090 SOUTH TECH BLVDMIAMISBURG OH 45342www.7nteng.comAllied Well Drilling601 HENRY CIRCLESINKING SPRING PA 19608www.alliedwells.comAmeriDrill, Inc.1201 EDGELY RDLEVITTOWN PA 19057www.drillingcompanypa.comArmstrong Drilling, Inc.4827 TREESDALE CTMURRYSVILLE PA 15668armstrongdrillinginc.comAWK Consulting Engineers, Inc.1225 RODI RDTURTLE CREEK PA 15145www.awkengineers.comContact PersonCharles WillisPhone: 937-435-3200Fax: nteng.comJames JaconoPhone: 484-228-8534Fax: [email protected] MoorePhone: 215-269-7300Fax: ll.comJames ArmstrongPhone: 412-977-1391Fax: [email protected] Abdulla, P.E.Phone: 412-823-8331Fax: ngineers.comPage 1 of 11Approved ClassSpecial Class (S)A, E1, SIND, ARD, OSD, DMT,VSTA, E1, E2, SBGT, DMT, IND, OSD,PMT, VSTB, E1, SHZDA, E1, SOSDA, E1, E2, SOSD, VST

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonB. L. Myers Bros, Inc.PO BOX 490GLENMOORE PA 19343www.blmyers.comBoring Brothers Inc.7070 ENGLISH CREEK AVEEGG HARBOR TWP NJ 08234www.boringbros.comChatfield Drilling, Inc.854 MERCER RDGREENVILLE PA 16125www.chatfielddrilling.comCGC Geoservices, LLC1000 DAWSON DR STE CNEWARK DE 19713www.cgcgeoservices.comCMT Laboratories, Inc.2701 CAROLEAN INDUSTRIAL DRSTATE COLLEGE PA 16801www.cmtlabsinc.comApproved ClassSpecial Class (S)David Myers Jr.Phone: 610-942-2030Fax: [email protected], E1, E2-Nicholas ThiesPhone: [email protected], E1-A, E1-A, SOSDB-Matthew ElchertPhone: 724-588-2652Fax: [email protected] ZieglerPhone: 302-489-2398Fax: gcgeoservices.comRichard WilliamsonPhone: 814-231-8845Fax: absinc.comPage 2 of 11

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonCraig Test Boring Co., Inc.Benjamin O. ThiesPhone: 609-625-4862Fax: 230 ATLANTIC AVEPO BOX 427MAYS LANDING NJ 08330-0427www.craigtestboring.comCTL Engineering of Pennsylvania, Inc.1091 CHAPLIN RDMORGANTOWN WV 26501www.ctleng.comDLZ American Drilling, Inc.6121 HUNTLEY RDCOLUMBUS, OH 43229www.dlz.comEarthcore Services, LLC511 THORNBURY LNHAVERFORD PA 19041www.earthcoreusa.comEast Coast Drilling, Inc.200 CENTURY PARKWAY STE BMOUNT LAUREL NJ 08054www.eastcoastdrill.comApproved ClassSpecial Class (S)A, E1, E2-A, E1-A, SIND, OSD, PMT, VSTNick CrisciPhone: 610-404-2570Fax: [email protected], E1, SOSDJames W. DuffyPhone: 856-722-1111Fax: astdrill.comB, E1, E2-Joe GraniPhone: 304-292-1135Fax: [email protected]@ctleng.comBarry K. WongPhone: 614-888-0040Fax: [email protected]@dlz.comPage 3 of 11

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyEichelbergers, Inc.107 TEXACO RDMECHANICSBURG PA 17050www.eichelbergers.comF. M. & W. Drilling, Inc.515 WELLFLEET RDCINNAMINSON NJ 08077Enviroprobe Integrated Solutions, Inc.630 CROSS LANES DRNITRO WV l Drilling Company, Inc.233 BODA RDPITTSBURGH PA 15147www.geoenv.comGeoMechanics, Inc.600 MUNIR DRPO BOX 386ELIZABETH PA 15037Contact PersonDave TrexlerPhone: 717-766-4800Fax: ers.comJohn SnyderPhone: 856-931-3808Fax: Roderic E. MoorePhone: 304-776-6717Fax: oprobeinc.comDeborah Ann WeiblePhone: 412-712-1035Fax: [email protected] M. LorencePhone: 724-379-6300Fax: [email protected] 4 of 11Approved ClassSpecial Class (S)A, E1, E2, SARD, OSD, VSTB-A, E1, SOSD, ARDA, E1, E2-A-

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonGeoStructures, Inc.Daniel W. Eshete, P.G.Phone: 610-265-1818Fax: [email protected] W 9 AVEKING OF PRUSSIA PA 19406www.geostructures.netHeller Drilling Co.34 ELIZABETH STWILKES BARRE PA 18702Hillis-Carnes Engineering Assoc., Inc.2929 STEWART DR STE 302STATE COLLEGE PA 16801www.hcea.comJersey Boring & Drilling Company, Inc.36 PIER LANE WESTFAIRFIELD NJ 07004www.jerseyboring.comJoe Murphy Drilling, LLC225 E SHORE DRTHOMPSON PA 18465Lyon Drilling Co.7426 SHACKHAM RDTULLY NY 13159-9333Lori HellerPhone: 570-823-5971Fax: [email protected] KunesPhone: [email protected]@hcea.comShelley LachPhone: 973-287-6857Fax: oring.comRob MurphyPhone: il.comHarry LyonPhone: 607-842-6580Fax: [email protected] 5 of 11Approved ClassSpecial Class (S)B, E1-A-A, SCPT, DMT, VSTA, E1, SOSD, VSTB-B, E1-

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonMain Line Drilling Co.William CorcoranPhone: 610-341-9296Fax: [email protected] CALVARESE LNWAYNE PA 19087www.mainlinedrilling.comMinichi, Inc.453 ZIEGLER STDUPONT PA 18641www.minichigroup.comMountain Research, LLC825 25TH STALTOONA PA 16601www.mountainresearch.comNavarro & Wright Consulting Engineers, Inc.151 RENO AVENEW CUMBERLAND PA 17070www.navarrowright.comNGE, LLC650 MACCORKLE AVE WST ALBANS WV 25177www.ngeconsulting.comTom StepanskiPhone: 570-654-8332Fax: [email protected] MalladPhone: 814-949-2034Fax: mountainresearch.comJoseph Mehalick IIPhone: 717-636-5291Fax: [email protected] FramePhone: [email protected] 6 of 11Approved ClassSpecial Class (S)B-B-A, E1-A, E1-A-

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonParratt-Wolff, Inc.Joshua EllingworthPhone: com4650 WESTBRANCH HWY STE 130LEWISBURG PA 17837www.pwinc.comPennsylvania Drilling Company281 ROUTE 30IMPERIAL PA 15126www.pennsylvaniadrillingco.comPocono Test Borings & Drilling Co.251 INDIAN LAKE TRLWHITE HAVEN PA 18661Professional Service Industries, Inc.850 POPLAR STPITTSBURGH PA 15220www.psiusa.comR. Rindfuss Drilling, L.P.13851 RTE 19 SWATERFORD PA 16441www.rrdrill.comResource Professional Services, Inc.1739 E CARSON ST STE 353PITTSBURGH PA 15203-1700www.resourceinternational.comLisa TilleyPhone: 724-695-2400Fax: comFrank SipplePhone: 570-332-7030Fax: [email protected] McDonaldPhone: 412-922-4001 x224Fax: [email protected] RindfussPhone: 814-796-4693Fax: [email protected] MyersPhone: resourceinternational.comPage 7 of 11Approved ClassSpecial Class (S)A, E1, E2-A, E1, E2, SHZD, OSDA, E1, SHZD, OSDA, E1-A, E1, SOSDA, SCPT, OSD

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsApprovedClassSpecial Class (S)Sue ParisanoPhone: 856-270-2693Fax: [email protected] J. BlasPhone: 716-649-8110Fax: [email protected], E1, SCPT, OSD, VSTB, E1-B, E1-A, E1-CompanyContact PersonSANO Drilling, Inc.12 WHITE PINE DRSEWELL NJ 08080www.sanodrilling.comSJB Services, Inc.5167 SOUTH PARK AVEHAMBURG NY 14075www.sjbegs.comSummit Drilling LLC81A CHIMNEY ROCK RDBRIDGEWATER NJ 08807www.summitdrilling.comTerra Testing, Inc.260 MEADOWLANDS BLVDWASHINGTON PA 15301www.terratestinginc.comTerracon Consultants, Inc.800 MORRISON RDCOLUMBUS OH 43230www.terracon.comJoan BaerPhone: 908-722-4266Fax: rilling.comEric HajekPhone: 724-746-9100Fax: testinginc.comSteve LarimerPhone: 614-328-5149Fax: erracon.comPage 8 of 11

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonTest Boring Services, Inc.Jeffrey SelvoskiPhone: 724-228-2990Fax: 724-228-2992j[email protected] BEAGLE CLUB RDWASHINGTON PA 15301www.testboring.comThe Robert B. Balter Company18 MUSIC FAIR RDOWINGS MILLS MD 21117www.balterco.comEdward G. BalterPhone: 410-363-1555Fax: al Class (S)A, E1, SHZD, OSDA-A, E1, SHZD, OSDA, E1, SOSD, IND, VSTA, E1, SOSD, INDTranSystems Corporation(dba TranSystems Corporation Consultants)(formally L.R. Kimball)615 WEST HIGHLAND AVEEBENSBURG PA 15931www.transystems.comTRC Engineers, Inc.1604 INDUSTRIAL HIGHWAYCINNAMINSON NJ 08077www.trccompanies.comTriad Engineering, Inc.10541 TEAYS VALLEY RDSCOTT DEPOT WV 25560www.triadeng.comGregory P. LetzoPhone: 814-419-7928Fax: [email protected] McGurganPhone: 856-829-3274Fax: companies.comJohn J. HaynesPhone: 304-755-0721Fax: Page 9 of 11

Effective Date: 2022-Sept-1PennDOT Prequalified Geotechnical Drilling ContractorsCompanyContact PersonUni-Tech Drilling Company, Inc.PO BOX 40761 GRAYS FERRY RDFRANKLINVILLE NJ 08322www.unitechdrilling.comWarren George, Inc.FOOT OF JERSEY AVEPO BOX 413JERSEY CITY NJ 07303www.warrengeorge.comApproved ClassSpecial Class (S)James EvansPhone: 856-694-4200Fax: hdrilling.comA, E1, SBGT, DMT, OSD, PMT,VSTAnthony TirroPhone: 201-433-9797Fax: [email protected], E1, SCPT, DMT, OSD, PMT,VSTPage 10 of 11

Effective Date: 2022-Sept-1Abbreviations for Special Class (S)geotechnical drilling:Borehole Geophysical TestingBGTCone Penetration TestingCPTDilatometer TestingDMTPressure Meter TestingPMTVane Shear TestingVSTAir-Rotary DrillingARDHorizontal DrillingHZDOff-Shore (Barge) DrillingOSDInclined DrillingINDPage 11 of 11

PennDOT Prequalified Geotechnical Drilling Contractors Company Contact Person Approved Class Special Class (S) 7NT Enterprises, LLC 3090 SOUTH TECH BLVD MIAMISBURG OH 45342 Charles Willis Phone: 937-435-3200 Fax: 937-291-6549 [email protected] [email protected] A, E1, S IND, ARD, OSD, DMT, VST Allied Well Drilling