State DOT Certification Programs for Materials Sampling and Testing Personnel (2025)
Chapter: Appendix F: Summary of Certification Information Gathered from State Websites
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Appendix E: Other Qualification/Certification Programs
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
APPENDIX F
Summary of Certification Information Gathered from State Websites
The practices and methods listed were compiled from information found on the DOT’s website or from a document or documents on their website.
AASHTO standard specifications begin with an “M,” practices begin with an “R,” and test methods begin with a “T.” AASHTO designations usually have a space between the letter and the number. The space was intentionally left out to facilitate data mining that was used for Chapter 5 content.
ASTM standard designations begin with a “C” or “D” and do not include a space.
Please refer to the respective website for the full name of a listed standard. American Concrete Institute (ACI) certification programs related to DOT-type work and their practices and methods are listed in Appendix E.
Note: these certifications and listed practices and methods have not been verified by the DOTs, and changes may have occurred since the information was gathered.
Table F1. Certification information.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Alabama | Concrete standard test methods for concrete mix design labs | T22, R100, T24, T97, T119, T131, T141, T152, T2231, T309, M201, C192, C1231 |
| Alabama | ACI Concrete Strength Testing Technician | ACI-CST Grade 1 or ACI-CFT Grade 1 |
| Alabama | ALDOT Concrete Technician | ACI-CFT Grade 1 certification required |
| Alabama | Precast Quality Control Technician or Precast Quality Assurance Inspector | ALDOT Concrete Technician certification -and- PCI Level II or NPCA Level I certification |
| Alabama | Prestressed Quality Control Technician or Prestressed Quality Assurance Inspector | ALDOT Concrete Technician certification -and- PCI Level II certification |
| Alabama | Radiation Safety Technician | Nuclear gauge operation |
| Alabama | Roadway HMA Pavement Technician | 3 day class on asphalt pavement construction, placement and compaction, the use of nuclear gauges to determine densities, and random sampling |
| Alabama | Asphalt Level 1 Laboratory Technician | 4 day class on HMA testing |
| Alabama | Asphalt Level II Quality Manager Technician | 4 day class on improving HMA mix quality, prerequisite of Radiation Safety, Roadway HMA Pavement and Asphalt Level 1 Laboratory |
| Alabama | Asphalt Level III Mix Design Technician | 5 day class on HMA mix design, prerequisite of Radiation Safety, Roadway HMA Pavement and Asphalt Level 1 Laboratory |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Alabama | Contractor HMA Roadway Technician | 1 day training on construction placement and use of nuclear gauges, prerequisite is Radiation Safety Technician |
| Alabama | Performance Graded Asphalt Binder (PGAB) Technician (Level 1) | T48, T240, T315, T316, T313, R28, T301, ALDOT FTIR method |
| Alabama | Terminal Performance Graded Asphalt Binder Technician (Level II) | T48, T240, T315, T316 |
| Alabama | Cutback Technician | T201, T79, T55, T295, T78, T202, T51, T44 |
| Alabama | Emulsion Technician | T59 (various methods), T49, T51, T44 |
| Alabama | Aggregate Technician | R90, T11, T19, T27, M92, M231, R76, D4791, and 3 ALDOT methods |
| Alabama | Earthwork (Unbound Material) Technician | 2 to 3 day class on earthwork technology. Prerequisite of Radiation Safety Technician |
| Alabama | ALDOT Traffic Marking Materials Technician | Producer provides training, ALDOT observes technician performing tests |
| Alaska | Embankment & Base Testing Technician (EBTT) | WAQTC (practices and methods are listed after state DOTs) |
| Alaska | Aggregate Testing Technician (AgTT) | WAQTC (practices and methods are listed after state DOTs) |
| Alaska | Asphalt I Testing Technician (AsTTI) | WAQTC (practices and methods are listed after state DOTs) |
| Alaska | Asphalt II Testing Technician (AsTTII) | WAQTC (practices and methods are listed after state DOTs) |
| Alaska | Concrete Testing Technician (CTT) | WAQTC (practices and methods are listed after state DOTs) |
| Alaska | Sampling (AKSAM) | R90, R76, R66, R97, R47 |
| Alaska | Density Testing Technician (DTT) | WAQTC (practices and methods are listed after state DOTs) |
| Arizona | ATTI Asphalt | 12 Arizona test methods and T 312 |
| Arizona | ATTI Field (soils, aggregate and asphalt - sampling and density type cert) | 11 Arizona test methods and R76 and T217 |
| Arizona | ATTI Laboratory Soils/Aggregate Technician | 10 Arizona test methods and T11, T19, T21, T89, T90, T176, R76, T255, T265 |
| Arizona | AZDOT accepts ACI Concrete Field Testing Technician Grade I (field) | ACI-CFT Grade 1 |
| Arizona | AZDOT accepts ACI Concrete Strength Testing Technician (laboratory) | ACI-CST Grade 1 |
| Arkansas | AR DOT CTTP Soils Testing Technician | M145, M146, R58, T89, T90, T99, T180, T265, T310, ARDOT30 (sampling), ARDOT 347 (speedy moisture tester) |
| Arkansas | AR DOT CTTP Basic Aggregates Testing Technician | R76, R90, T11, T21, T27, T84, T85, T255, ARDOT 302 (deleterious) and ARDOT 304 (crushed) |
| Arkansas | AR DOT CTTP Hot Mix Asphalt Testing Technician | R47, R67, R97, T30, T166, T209, T269, T275, T287, T308, T312, T 329, T331, T344, ARDOT 449 and 449A (nuclear density), ARDOT 455A, ARDOT 460, ARDOT 464 (VMA) |
| Arkansas | AR DOT CTTP Concrete Field Testing Technician | M201 C511, M205 C470, R60 C172, R100 C31, T19 C29, T119 C143, T121 C138, T152, C231, T196 C173, T309 C1064 |
| Arkansas | AR DOT CTTP Concrete Strength Testing Technician | T22 C39, T22 C1231, T24 C42, T97 C78, T106 C109, T148 C174, T231 C617 |
| Arkansas | ARDOT NPDES | |
| Arkansas | ARDOT CTTP Inertial Profiling Certification Program | M328, R57 |
| Arkansas | Concrete Pavement Patching (not a certification but in M-TRAC document) | |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Arkansas | Bridge Scour and Stream Stability (not a certification but in M-TRAC document-NHI Class noted) | |
| California | Inertial Profiler Certification Program (IPCP) | operator and equipment certification |
| California | Joint Training and Certification Program Hot Mix Asphalt I (HMA I) | R76, T11, T27, T176, T255, T329, T335 CT test methods for sampling and specific gravity calcs |
| California | Joint Training and Certification Program Hot Mix Asphalt II (HMA II) | T166, T209, T269, T275, T308 |
| California | Joint Training and Certification Program Soils and Aggregate (S/A) | All CT (CalTrans) Test methods CT105, 125, 201, 202, 205, 216, 217, 226, 227, 229 |
| California | Joint Training and Certification Program Portland Cement Concrete (PCC) (ACI Field Tech. Grade I) | ASTM C31, C138, C143, C172, C173, C231, C1064 (also note they have equivalent CT test methods) ONLY for Caltrans technicians - others take ACI-CFT Grade 1 |
| Colorado | WAQTC Embankment & Base Testing Technician (EBTT) | WAQTC (practices and methods are listed after state DOTs) |
| Colorado | LABCAT A - Laydown | 6 Colorado procedures, sampling, BSG and nuclear density |
| Colorado | LABCAT B - Plant Materials Control | T11, T27, and 9 Colorado procedures |
| Colorado | LABCAT C - Volumetrics, Gyratory, Stability, & Lottmans | 4 Colorado procedures, Hveem |
| Colorado | LABCAT C minus Design - Volumetrics and Gyratory Compaction | 2 Colorado procedures, volumetrics |
| Colorado | LABCAT E - Aggregates | T11, T27, T84, T85, T96, T90, T104, T112, D4791, and 6 Colorado procedures |
| Colorado | LABCAT Level I - Asphalt Paving Materials Inspector | LABCAT Level A is prerequisite |
| Colorado | ACI Concrete Field Testing Technician Grade I (FG) | ACI-CFT Grade 1 |
| Colorado | ACI Aggregate Testing Technician- Level 1 | R76, R90, T11, T84, T85, T255, T27 |
| Colorado | ACI Aggregate Testing Technician- Level 2 | T96, T104, T112, T176, T304, TP61, D4791, and 2 Colorado methods |
| Colorado | ACI Concrete Laboratory Testing Technician Grade I or ACI Concrete Lab Testing Technician Level 1 | ACI-CST Grade 1 |
| Colorado | ACI Concrete Laboratory Testing Technician Grade II or ACI Concrete Lab Testing Technician Level 2 | ACI-CST Grade 2 |
| Colorado | ACI Aggregate Base Testing Technician | R90, R76, T89, T90, T99, T180 |
| Colorado | CDOT Materials Technician Certification (TETP) one time test | CDOT reporting procedures |
| Colorado | Self-consolidating Concrete Testing Technician (SCC) - ACI FG I is prerequisite | |
| Connecticut | Use NETTCP (CCT, HMAPI, SAI, NACE) | NETTCP (practices and methods are listed after state DOTs) |
| Delaware | Quality Assurance Technician | Internal program |
| Florida | Aggregate Testing Technician | Requires ACI Aggregate Testing Technician Level 1 certification |
| Florida | Aggregate Base Testing Technician | Requires ACI Base Testing Technician certification |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Florida | Qualified Sampler Technician | 1 day class in sampling -or- have Aggregate Testing or Aggregate Base certification |
| Florida | LBR Technician Training | 1 day class in Florida method FM 5-515 LBR |
| Florida | Asphalt Paving - Level 1 | 1 day class |
| Florida | Asphalt Paving - Level 2 | 3 day class and Level 1 is prerequisite |
| Florida | Asphalt Plant - Level 1 | 3 day class |
| Florida | Asphalt Plant - Level 2 | 3 day class and Level 1 is prerequisite |
| Florida | Asphalt Mix Designer | 3 1/2 day class, includes FDOT mix design procedures |
| Florida | Concrete Field Inspector Specification (CFIS) certification | 2 and 1/2 day course on FDOT Specifications |
| Florida | Concrete Field Testing Technician Level 1 | ACI-CFT Grade 1 and FDOT Concrete Field Inspector Specification (CFIS) certification |
| Florida | Concrete Field Inspector - Level 2 | 3 day course prerequisite is ACI Concrete Transportation Construction Inspector and ACI-CFT Grade 1 and CFIS |
| Florida | ACI Concrete Transportation Construction Inspector (CTCI) | 3 day ACI course |
| Florida | ACI Concrete Field Testing Technician | ACI-CFT Grade 1 class |
| Florida | Concrete Lab Technician Level 1 | Requires ACI-CST or ACI Concrete Laboratory Testing Level 1 |
| Florida | ACI Concrete Strength Testing Technician | ACI-CST Grade 1 |
| Florida | ACI Concrete Laboratory Testing Technician Level 1 | ACI Concrete Lab Testing Level 1 |
| Florida | Concrete Laboratory Testing Technician Level 2 | ACI Concrete Lab Testing Level 1 and Level 2 and CFIS and 1 year experience |
| Florida | Concrete Batch Plant Operator | Self-study course with written exam |
| Florida | Prestressed Concrete Field Inspector/Technician | ACI-CFT Grade 1 and PCI Level II and FDOT Prestressed CFIS |
| Florida | Concrete Central Mix Testing Technician | ACI-CFT Grade 1 or ACI Self-Consolidating Concrete (SCC) Testing Technician |
| Florida | Earthwork Construction Inspection Level 1 | 1 1/2 day class on sampling, nuclear density, and speedy moisture (FDOT methods), prerequisite is Radiation Safety certificate |
| Florida | Earthwork Construction Inspection Level 2 | 2 day class on density and FDOT specification and procedures, Level 1 is prerequisite along with FDOT self-study exams on math, plan reading and inspection |
| Florida | QC Manager | 2 day class, prerequisite requires at least 2 different Level 2 certifications |
| Florida | CTQP Final Estimates Level 1 | CBT (Computer Based Training) |
| Florida | CTQP Final Estimates Level 2 | _ |
| Florida | Pile Driving Inspector | _ |
| Florida | Drilled Shaft Inspector | _ |
| Florida | Auger Cast Pile Inspector | _ |
| Florida | Auger Cast piles (non-structural) | CBT course |
| Florida | Mechanically Stabilized Earth Wall | CBT course |
| Georgia | Aggregate Technician | T11, T21, T27, T96, R76, and 8 GDOT methods. Technicians approved for individual tests. |
| Georgia | Emulsified Asphalt Technician Level 1 and 2 | |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Georgia | Asphalt Quality Control Technician (QCT) Level 1 | T11, T27, T166, T209, T269, T308, T312, T324, and 10 GDOT methods |
| Georgia | Asphalt Quality Control Technician (QCT) Level 2 | Level 1 requirements plus 10 additional GDOT methods |
| Georgia | ACI Concrete Technician | ACI-CFT Grade 1 also accepted with additional requirements |
| Georgia | Soil Testing Technician (STT) | R58, T89, T90, T180, T265, and 3 GDOT methods for gradation, volume change, and max density |
| Georgia | Sand and Gravel Technician | |
| Georgia | Concrete Batcher | |
| Georgia | Cutback Asphalt Tech | |
| Georgia | Field Concrete Tech | 10 GDOT methods, ACI-CFT Grade 1 also accepted with additional requirements |
| Georgia | Field Welder | |
| Georgia | Precast Tech | |
| Georgia | Prestress Tech | PCI certification recognized |
| Georgia | Profilograph Operator | |
| Georgia | Roadway Testing Technician (RTT) | modified T 99, T 191, T166, T310, modified T272, 3 GDOT methods, nuclear gauge safety, and Hazmat certifications also required |
| Georgia | Superpave Binder Tech 1, 1A, 1B, 2 | NCAT classes |
| Hawaii | Bituminous (Asphalt) Unit | R66, R97 |
| Hawaii | Soils and Aggregate Unit | R90, 2 HDOT methods for density and moisture |
| Hawaii | Concrete Materials Unit | R100, T119, R60, T309, T121, T152, T196 |
| Idaho | Concrete Testing Technician (CTT) | WAQTC (practices and methods are listed after state DOTs) or ACI-CFT Grade 1 |
| Idaho | Aggregate Testing Technician (AgTT) | WAQTC (practices and methods are listed in Appendix E) |
| Idaho | Asphalt Testing Technician I Testing Technician (AsTTI) | WAQTC (practices and methods are listed in Appendix E) |
| Idaho | Asphalt II Testing Technician (AsTTII) | WAQTC (practices and methods are listed in Appendix E) |
| Idaho | Concrete and Structures (C&S) | |
| Idaho | Contract Administration (CA) | |
| Idaho | Concrete Laboratory Testing Technician (CLTT) | M201, T22, T231, C1231, and prerequisite CTT or ACI-CFT Grade 1 |
| Idaho | Concrete Testing Technician (CTT) | WAQTC (practices and methods are listed in Appendix E) |
| Idaho | In-place Density (DTT) | WAQTC (practices and methods are listed in Appendix E) |
| Idaho | Earthwork and Base (E&B) | |
| Idaho | E. arch Cultural resources | |
| Idaho | E. NPDES | |
| Idaho | E. wetlands | |
| Idaho | Embankment and Base Testing Technician (EBTT) | WAQTC (practices and methods are listed in Appendix E) |
| Idaho | Surface Treatment and Plant Mix Pavement (S.T. & P.P.) | |
| Idaho | Superpave Field Technician (SPFT) | |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Idaho | Superpave Mix Design Technician (SPMDT) | Formal training from AI, NCAT or equivalent, prerequisite AgTT, AsTT II, and individual quals for T304 and D4791 |
| Idaho | Self-consolidating Concrete Testing Technician (SCCTT) | WAQTC (practices and methods are listed in Appendix E) |
| Illinois | Mixture Aggregate Technician (CET 020) | Illinois Test Procedures (R90, T11, T27, R76, T255) |
| Illinois | HMA Level I (CET 022 or CET 029) | R35, T164, T166, T 209, T245, T 283, T287, T308, T312, T324, D2950 |
| Illinois | HMA Level II (CET 023) | Level 1 + laydown |
| Illinois | HMA Level III (CET 031) (Mix Design) | Level 2 + Mix Design |
| Illinois | Field Density (CET 026) | |
| Illinois | Portland Cement Concrete Level I (CET 030) | Illinois modified (R60, R100, T22, T119, T152, T177, T196, C1064 T121,) and Illinois Self-consolidating concrete test procedures |
| Illinois | Portland Cement Concrete Level II (CET 024) | Proportioning, requires Mixture Aggregate or PCC Level 1 |
| Illinois | Portland Cement Concrete Level III (CET 039) | Concrete mix design, prerequisite is Mixture Aggregate or PCC Level II |
| Illinois | Soils Field Testing and Inspection (S-33) | |
| Illinois | Aggregate Technician (CET 021) | |
| Illinois | Radiation Safety and Density by the Nuclear Method (S-34) | |
| Illinois | PCC Level 1 for those who already have ACI Grade 1 (CET 035) | |
| Illinois | N/A | CET ##= class listing number for Lakeland College S # = Illinois DOT certification |
| Indiana | Bridge Construction and Deck Repair | |
| Indiana | Concrete Paving | |
| Indiana | Construction Earthworks | |
| Indiana | Construction Procedures 1 | |
| Indiana | Construction Procedures 2 | |
| Indiana | Hot Mix Asphalt Paving | |
| Indiana | Aggregate | T11, T27, T112, D5821, E29, 9 Indiana standards |
| Indiana | PCC | ACI certified technicians |
| Indiana | Soil | T99, T191, T224, T225, 5 ITM methods |
| Indiana | Certified Asphalt Technician | Pass written exam |
| Indiana | Qualified Asphalt Technician | Pass performance exam Fulfill IA and QAPP, T166, T209, T275, T312, T331, 5 IMT procedures |
| Indiana | Level 1 Asphalt Technician | Technician that is both qualified and certified |
| Iowa | Aggregate Sampler | Iowa Test methods for sampling and quartering |
| Iowa | Aggregate Technician | 8 Iowa Test methods |
| Iowa | Erosion Control Technician | |
| Iowa | PCC Level I (Certified Concrete Tester) | 12 Iowa methods and T97 - also accept ACI-CFT Grade 1 with written exam on maturity, flowable mortar, beam breaks, measuring cores |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Iowa | PCC Level II (Certified PCC Technician) | Plant operations - Prerequisite is Aggregate Technician and PCC Level I |
| Iowa | PCC Level III (PCC Mix Designer) | Mix Design - Prerequisite is PCC Level II |
| Iowa | Prestress Technician | Iowa IM 570 – Prerequisite is PCC Level I or ACI Level I (also Aggregate Technician if they will be running gradations) |
| Iowa | IA DOT HMA Sampler | 4 Iowa test methods related to sampling |
| Iowa | HMA Level I | 8 Iowa Test methods - prerequisite is Aggregate Technician |
| Iowa | HMA Level II | 1 Iowa Test method and T176, T304, D4791, T283 (Mix Design) – prerequisite is HMA Level I |
| Iowa | Soils Technician | 3 Iowa test methods and D2937 |
| Iowa | Ride Quality/Profilometer Technician | Iowa IM 341 |
| Iowa | Nuclear Gauge Operator (DOT only) | |
| Kansas | Basic Math (MA) | This class is prerequisite for most other classes |
| Kansas | Aggregate Field Tech (AGF) | 8 Kansas methods |
| Kansas | Aggregate Lab Tech (AGL) | 4 Kansas methods |
| Kansas | Soils Field Tester (SOF) | 5 Kansas methods and R 58 |
| Kansas | Superpave Field (SF) | 6 Kansas methods |
| Kansas | Hardened Concrete Properties (HCP) | 6 Kansas methods |
| Kansas | Asphalt Paving Inspection (API) | Inspection |
| Kansas | ACI Concrete Field Technician (CF) | ACI-CFT Grade 1 |
| Kansas | Concrete Paving Inspection (CPI) | Inspection |
| Kansas | Construction Stormwater (CSW) | Inspection |
| Kansas | Drilled Shaft Inspection (DSI) | Inspection |
| Kansas | Nuclear Gauge (NUC) | 5 Kansas methods |
| Kansas | Pile Driving Inspection (PDI) | Inspection |
| Kansas | Profilograph Operator (PO) | California style profilograph |
| Kansas | QC/QA Asphalt Specs (QCA) | STA is prerequisite |
| Kansas | QC/QA Concrete/Cement Treated Base (QCS) | STA is prerequisite |
| Kansas | Statistics (STA) | Online course and online exam |
| Kansas | Structures Inspection (STR) | Inspection |
| Kansas | Traffic Control Inspection (TCI) | Inspection |
| Kentucky | Qualified Aggregate Technician | 2 1/2 day class |
| Kentucky | Sampling Technician (Aggregates) | 1 day class |
| Kentucky | Superpave Plant Technologist (SPT) | 4 day class |
| Kentucky | Superpave Mix Design Technologist (SMDT) | 3 1/2 day class prerequisite is SPT |
| Kentucky | ACI Review Course on Strength Testing and Field Testing | ACI standard methods |
| Louisiana | Embankment and Base Course | Sampling and visual inspection |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Louisiana | Asphalt Concrete Plant | Sampling and plant inspection |
| Louisiana | Asphalt Concrete Paving | Sampling and testing |
| Louisiana | PCC Paving | Sampling and testing and inspection |
| Louisiana | PCC Technician | Sampling and testing |
| Louisiana | Structural Concrete | Inspection, sampling, and testing |
| Louisiana | District Lab Operations | Lead workers, prerequisite is Authorized Aggregate Tester |
| Louisiana | Authorized Profiler Operator | |
| Louisiana | Authorized Aggregate Tester | T19 and 5 LDOTD methods |
| Louisiana | Authorized Asphalt Concrete Plant Technician | T84, T85, T312, T324, D4791 and 8 LDOTD methods |
| Louisiana | PCC Field Tester- Non DOT only | Equivalent to ACI-CFT Grade 1 |
| Maine | NETTCP | NETTCP (practices and methods are listed after state DOTs) |
| Maryland | Soil & Aggregate Compaction Tech | T99, T180, T310 nuclear density |
| Maryland | Aggregate Tech (Plant/Field) | R90, T11, T27, T19, R76, T84, T85, T89, T90 |
| Maryland | Concrete Field Tech | ACI-CFT Grade 1 required |
| Maryland | Asphalt Field Tech | Online training provided by Maryland APA. Written test, no proficiency test |
| Maryland | Asphalt Plant - Level 1 | R66, R90, T11, T27, T30, T84, T85, T166, R97, T176, T209, R76, T269, T283, T304, T308, T312, D4791, D5921 Written test and proficiency/performance verification |
| Maryland | Asphalt Plant -Level 2 | Written test only but Asphalt plant Level 1 is prerequisite |
| Maryland | Pavement Marking Tech | Online training. Written exam and performance verification required |
| Maryland | Inertial Profiler Operator Tech | Written exam |
| Maryland | Concrete Plant Tech | Reciprocity for NRMCA Concrete Tech Level 2 or 3 |
| Massachusetts | NETTCP | NETTCP (practices and methods are listed after state DOTs) |
| Michigan | Aggregate Sampler | 2 Michigan sampling methods |
| Michigan | HMA Sampling Certification for Local Agency Projects | 2 Michigan sampling methods |
| Michigan | HMA QC/QA | 4 day program related to Testing process, not a course |
| Michigan | Hot Mix Asphalt Level 1 | 4 day class. Aggregate Inspection Level I is prerequisite. 8 Michigan test methods |
| Michigan | Aggregate Inspection Level I | 3 day class. Sampling, washing, and sieving. 5 Michigan test methods and C702 and C40 |
| Michigan | Aggregate Inspection Level II | 4 day class. Aggregate Level I is prerequisite. 9 Michigan test methods and C702, C40, C1252 |
| Michigan | Density Control | 3 day class. Michigan modified (T99 and T180) and nuclear gauge |
| Michigan | HMA Paving Operations | Inspection, 4 day class |
| Michigan | MCA ACI Level 1 Concrete Field Testing Technician | ACI-CFT-Grade 1 |
| Michigan | MCA ACI Level II Concrete Technician | ACI Level 1 Certification prerequisite. Mix Design and MDOT QA/QC specifications |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Michigan | MCA ACI Concrete Strength Test | ACI-CST Grade 1 |
| Michigan | Radiation Safety Training | |
| Michigan | MCA Decorative Concrete Certification | |
| Michigan | NRMCA Pervious Concrete (MCA) | |
| Michigan | MDEQ stormwater Operator | |
| Michigan | MDEQ Soil Erosion and Sedimentation control | |
| Michigan | SSPC (Society for Protective Coatings) | |
| Michigan | Computerized Office Technician (MDOT & FTCH) | |
| Michigan | MCA “New” Super Air Meter (SAM) Certification | |
| Michigan | MCA “New” Self Consolidating Concrete Certification | |
| Minnesota | Aggregate Production Tester | 1 day course, R90, R76, T255, T27 (course, fine and No200 wash), T 335 |
| Minnesota | Bituminous Plant Tester | 3 day course, R76, T84, T85, T304, T308 (Method A), Minn modified (T209, T312, T166, T269, T166, D4867, D6752), MnDOT sampling |
| Minnesota | Bituminous Mix Designer | 5 day course |
| Minnesota | Bituminous Street Inspector | 3 day course, Inspection |
| Minnesota | Bridge Construction Inspector | 10 day course, Inspection |
| Minnesota | Concrete Field Tester | ACI-CFT Grade 1 |
| Minnesota | Concrete Field Inspector | 3 day class on Inspection |
| Minnesota | Concrete Plant Tester | 2 day course |
| Minnesota | Concrete Strength Tester | 1 day course, C617, C1231, C39, R100, M 201, ACI Strength Technician or Wisconsin Strength Certification also accepted |
| Minnesota | Grading and Base Tester | 2 day course, T99, T265, T217 mod, T99, T191, MnDOT G&B Manual tests (Sand cone, DCP) |
| Minnesota | Grading and Base Inspector | 3 day course, Inspection |
| Mississippi | ACI Field Testing Technician- Grade 1 (MDOT Class 1) | ACI-CFT Grade 1 |
| Mississippi | ACI Aggregate testing technician-Level 1 (MDOT Class 2) | ACI-AGG Level 1 |
| Mississippi | ACI Strength Testing Tech | ACI-CST Grade 1 |
| Mississippi | MDOT Class 3 Concrete Tech | 3 day course covers Mix design and specifications |
| Mississippi | Certified Asphalt Technician – I (CAT-I) | 2 to 4 day class with lab Prerequisite: 3 mos. experience under a CAT 1 or Intro to Asphalt class or 2 years’ experience doing QC |
| Mississippi | Certified Asphalt Technician – II (CAT-II) | Exam only and CAT I |
| Mississippi | Certified Mixture Design Technician (CMDT) | 5 day class with lab Prerequisite: 3 months exp as a CAT I or 3 yrs. exp under a CMDT or 2 yrs. experience in QC |
| Missouri | Aggregate Technician (AT) | R90, R76 C702, T11 C117, T27 C136, T255 C566, D4791, T84 C128, T85 C127, MoDOT methods for deleterious and SG/Vacuum Sealing |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Missouri | Bituminous Technician (BT) | R66, R97, R47, T329, T166/T331, T269, MoDOT methods (modified T308 and mix temp) |
| Missouri | Soil Density (SD) | T265, T99, T310, MoDOT methods (1-point density, nuclear moisture) |
| Missouri | Concrete Field (CF) | R60 C172, C1064, T119 C143, T152 C231, R100 C31, T121 C138, T196 C173 |
| Missouri | Concrete Strength (CS) | T24 C42, T148 C174, T231 C617, T22 C29, T97 C78, C1231 |
| Missouri | HMA Aggregate (HMA) (Consensus Tests) | T176, T304, D5821 |
| Missouri | Superpave QC/QA (SP) | R30, T312, T209, T308 |
| Missouri | TSR | T283 |
| Missouri | Binder Ignition (BI) | T308 |
| Missouri | International Roughness Index (IRI) Profile | MoDOT TM 59 on IRI |
| Missouri | Plasticity Index (PI) | T90, T89, MoDOT method for Aggregate Base prep |
| Montana | Aggregate Testing Technician (AgTT) | WAQTC (practices and methods are listed after state DOTs) |
| Montana | Asphalt I Testing Technician (AsTTI) | WAQTC (practices and methods are listed after state DOTs) |
| Montana | Asphalt II Testing Technician (AsTTII) | WAQTC (practices and methods are listed after state DOTs) |
| Montana | Concrete Testing Technician (CTT) | WAQTC (practices and methods are listed after state DOTs) or ACI-CFT Grade 1 |
| Montana | Density Testing Technician (DTT) | WAQTC (practices and methods are listed after state DOTs) |
| Montana | Embankment & Base Testing Technician (EBTT) | WAQTC (practices and methods are listed after state DOTs) |
| Montana | Embankment & Base/In-Place Density (EB/DTT) combined | WAQTC (practices and methods are listed after state DOTs) |
| Montana | MDT Field Tech (GEN-MDT Field Tech) | Radiation Safety certification is prerequisite. R 66, R 76, R 90, T27/T 11, T 30, T 255/T 265, T 310, T 335 |
| Nebraska | Earthwork Technician I (coordinated with LTAP) | D2167, R90, T11, T27, R76, T255, T310, T265, NDT T2835 (LWD) |
| Nebraska | Earthwork Technician II (coordinated with LTAP) | R58, T89, T90, T99, R76, T 265 |
| Nebraska | Asphalt Concrete Technician | T166, R97, T209, T27, T30, T84, T85, T269, T304, R76, ASTM D5821, T312, T308, T269, R90, NDT T587 (Nuclear density) |
| Nebraska | ACI Concrete Strength Testing Technician (with NE Concrete and Aggregate Assoc) | C617, C1231, C39, C78 |
| Nebraska | Maturity Curve Method of Development | NDT C1074 Estimating Concrete Strength by the Maturity Method |
| Nebraska | ACI Concrete Field Testing Technician - Grade 1 | C31, C138, C143, C172, C173, C231, C1064 |
| Nebraska | Concrete Plant Technician | R90, T11, T27, R76, T255, NDT T506, NDT S01 |
| Nebraska | Portland Cement Concrete Paving Inspection | AASHTO TTS Class |
| Nebraska | Maturity Method Field Monitoring | NDT C1074 Estimating Concrete Strength by the Maturity Method |
| Nebraska | Profilograph Operator | N/A |
| Nebraska | Portland Cement Sampler | NDT S01 Method of Sampling Portland and Interground/Blended Cements |
| Nebraska | PG Binder/Emulsion Sample Technician | R66 (sampling liquid) |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Nebraska | Asphaltic Field Technician I | R66 (sampling liquid) |
| Nebraska | Asphaltic Field Technician II | Inspection and NDOT specifications |
| Nebraska | Paint & Bead Sampling | ASTM D8008, AASHTO T346 |
| Nebraska | Provisional Certifications for 1 year for Concrete Paving, Soils/Aggregate, Asphalt Concrete Technician | N/A |
| Nevada | Sampling and Density Module (SD) | R90, R76, R97, R47, T310, Nev. T335G. |
| Nevada | Aggregate Module (AG) | R90, T11, T27, R58, T89, T90, T255, T84, T85, T176, T180 / Nev. T108D, D5821, CT 227. |
| Nevada | Asphalt Module (AM) | T30, T166 OR T275, R47, T209, T269, T308, T245, R68 |
| Nevada | Asphalt Extended Module (AE) | T164 |
| Nevada | Specialized Test Module (ST) | R66, T104, T190, T246, T283, C837 |
| New Hampshire | NETTCP (practices and methods are listed after state DOTs) | |
| New Jersey | NJSAT Level 1 Asphalt | |
| New Jersey | NJSAT Level 2 Asphalt Plant (Applicants cannot take Level 2 without a Level 1 certification) | T11, T27, T166, T209, T308, T312, T329 NJDOT procedure for submitting samples |
| New Jersey | NJSAT Asphalt Paving Construction Technologist | Inspection |
| New Jersey | In-house Concrete Certification | Considered equivalent to ACI-CFT grade 1 |
| New Jersey | Soil and Aggregate Technician Level 1 | MARTCP considered equivalent |
| New Mexico | Aggregate | R90, T11, T27, R58, T89, T90, R74, T176, R76, T255, T335, NMDOT FE-1 for fracture |
| New Mexico | Soil | M145, T85, T99, T180, T265, T272, NMDOT R-value |
| New Mexico | Hot-Mix Asphalt (HMA) | T30, R66, T166, R97, T209, T269, T275, T304, T308, T312, T331, R47, R79 |
| New Mexico | Concrete | R60, T309, T119, T121, R100, T22, NMDOT CS-1 capping |
| New Mexico | Nuclear Densometer | T310 |
| New Mexico | Inertial Profiler Inspector | Reviews NMDOT Standard Specification 401 |
| New Mexico | Inertial Profiler Operator | Inspector Training is prerequisite |
| New Mexico | Inertial Profiler Machine | |
| New Mexico | TTCP for Decision Makers | 2 day class for supervisors |
| New Mexico | TTCP HMA Construction Inspection | 1 day class |
| New Mexico | TTCP Ethics Awareness for the Transportation Industry | |
| New Mexico | TTCP Introduction to Bridge Construction Inspection | 2 day class |
| New Mexico | NMDOT Drilled Shaft Inspector Module | Reviews NMDOT Standard Specification 502 |
| New Mexico | NMDOT Seeding Inspector Module | Reviews NMDOT Standard Specification 632 |
| New York | PCC Field | ACI-CFT Grade I equivalent or NYSDOT Concrete Field Testing Technician Certification (NYSDOT only) |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| New York | Geotechnical Testing | NETTCP Soil and Aggregate Inspector Certification (practices and methods are listed after state DOTs) or NYSDOT Earthwork Inspector (NYSDOT only) NYSDOT Nuclear Density Gauge Training required if using a nuclear gauge |
| New York | Asphalt Field: NYS Density Testing Inspector (Alfred State College) | 2 day class on asphalt density |
| New York | Asphalt Plant: Certified QC/QA Technician Hot Mix Asphalt (Alfred State College) | 2 day class |
| North Carolina | ABC Sampling Technician (Roadway) (MAT 210) | 4 hr. class |
| North Carolina | Conventional Density Tech (MAT 230) | 2 day class |
| North Carolina | Borrow Pit Sampling Tech (MAT 410) | 4 hr. class |
| North Carolina | QA Chemical Stabilization Subgrade/Base QA (GEO 156) | 4 hr. class |
| North Carolina | Nuclear Safety and Haz Mat (MAT 250) | 8 hr. class, NCDOT employees only |
| North Carolina | QMS Density Gauge Tech (MAT 380) | 7 hr. class |
| North Carolina | ABC Nuclear Density Tech (MAT 370) | 6 hr. class |
| North Carolina | QMS Roadway Technician (MAT 535) | 2 day class, Prerequisite: Introduction to Asphalt |
| North Carolina | QMS Level 1 Plant (MAT 525) | 2 day class, Prerequisite: Introduction to Asphalt |
| North Carolina | QMS Level 2 Plant (MAT 530) | 2 day class, QMS Level 1 for minimum one year |
| North Carolina | QMS Asphalt Mix Design (MAT 575) | 1.5 day class, QMS 1 or QMS 2 is prerequisite. |
| North Carolina | Concrete Field Technician (MAT 100) | 1 day NCDOT procedures and test, and 2 day ACI-CFT Grade 1 procedures and test |
| North Carolina | Concrete Batch Tech (MAT 110) | 2 day class, Prerequisite: Concrete Field Technician |
| North Carolina | Volumetric Concrete Batch Tech (MAT 110V) | 1 day class, Prerequisite: Concrete Batch Tech |
| North Carolina | PCC Pavement Tech (MAT 130/131) | 2 day class, Prerequisite: Concrete Field Technician |
| North Carolina | Concrete Mix Design (MAT 120) | 3 day class, Prerequisite is ACI-CFT Grade 1 and Concrete Batch Tech |
| North Carolina | ACI Concrete Strength Testing Tech (MAT 150) | ACI-CST Grade 1 |
| North Carolina | QC/QA Aggregate Sampling (MAT 400) | 1 day class |
| North Carolina | QC/QA Aggregate Testing (MAT 405) | 1 day class |
| North Carolina | Introduction to Asphalt (CON_250) | 12 hour online class (Stanley Community College) |
| North Dakota | ND DOT Aggregate Sampling Technician | ND modified (R90, R76) |
| North Dakota | ND DOT Aggregate Field/Gradations | ND modified (R90, T11, T, 27, R76, T255) |
| North Dakota | Aggregate Field Lab (QC/QA Field Lab Tester) | ND modified (R90, T11, T27, R76, T255, T113, T176, T304, D4791) and NDDOT 4 (Fractured particles) |
| North Dakota | ND DOT Aggregate (Mix) Designer (QC/QA Asphalt Mix Design Tester or Designer) | ND modified (R90, T11, T27, R76, T255, T113, T176, T304, D4791, T84, T85, T30) and NDDOT 4 (Fractured particles) |
| North Dakota | ND DOT Asphalt Mix Tester (AMT) | ND modified (T166, T209, T312), NDDOT 5 (sampling and splitting) |
| North Dakota | ND DOT Asphalt Mix Controller (AMC) or Asphalt Mix Design (AMD) | Requires API, QC/QA Agg Field, AMT, and AMC |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| North Dakota | ND DOT Asphalt Pavement Inspector (API) | N/A |
| North Dakota | ND DOT Concrete Field Tester | ACI-CFT Grade 1 |
| North Dakota | ND DOT Soil Field Tester | ND modified (T99, T180, T191, T217, T265, T255, D2167, D4643) |
| North Dakota | Soils Density Tester | ND modified (T191, or D2167, T265, T 255, D4643) |
| Ohio | Level I Aggregate (cert class through OAIMA) | Registration though Ohio Aggregates and Industrial Minerals Association (OAIMA) |
| Ohio | Level II Aggregate (cert class through OAIMA) | Registration through OAIMA |
| Ohio | Level III Aggregate (cert class through OAIMA) | T84, T85, T96, T104, T176, T304, T327 |
| Ohio | Level II QC Technician (cert class through FPO) | 2.5 day class through Flexible Pavements of Ohio (FPO) |
| Ohio | Level III Mix Design (cert class through FPO) | 4 day class Level II is prerequisite |
| Ohio | Field Quality Control Supervisor (Asphalt) | 1 day class over ODOT specifications |
| Ohio | Concrete | ACI-CFT Grade 1 |
| Ohio | AWS Certified Welder | AWS Certification |
| Ohio | Bridge Paint Quality Control Specialist (Work Type 26) | Painting of structural steel and inspection of painting |
| Ohio | Project Inspector | Inspector requires ACI-CFT Grade 1 and ACI Agg- Grade 1 |
| Ohio | Project Structure Inspector | ODOT test or NICET LEVEL III |
| Ohio | Concrete Sealer (Work Type 57) | N/A |
| Ohio | Worksite Traffic Supervisor | N/A |
| Ohio | Soils and Aggregate Inspector | ODOT Compaction Testing -and- NICET Level II or NETTCP Soils and Aggregate Inspector Cert. (NETTCP practices and methods are listed after state DOTs) |
| Oklahoma | Asphalt | T30, R67, R97, T176, T209, T312, R47, 4 OHD methods |
| Oklahoma | Asphalt Mix Design Level 1 | T84, T85, T304, T283, D4791, 1 OHD method, Aggregates certification recommended |
| Oklahoma | Asphalt Mix Design Level 2 | Focused on DOT procedures for mix design |
| Oklahoma | Materials Sampling & Testing | R90, T22, R100, T119, T121, R60, T152, R67, R97, T196, C1064, T310, 2 OHD methods |
| Oklahoma | Soils | D1140, T85, R58, T88, T89, T90, T180, T224, T272, T310, M145, D2487 |
| Oklahoma | Concrete | T22, R100, T119, T121, R60, T152, T196, C1064 |
| Oklahoma | Aggregates | R90, T11, T27, R76, T255 |
| Oklahoma | Asphalt Sampler | R90, R67, R97, R47, 1 OHD method |
| Oklahoma | ACI Extension | ACI-CFT Grade 1, T22, C1231, Type B air meter |
| Oklahoma | Profilograph Operator | E1724 and ODOT special provision |
| Oregon | WAQTC Certifications also require ODOT exam on specs | |
| Oregon | Certified Asphalt Technician I (CAT-1) | WAQTC Equivalent (AsTT II - practices and methods are listed after state DOTs) Training through Asphalt Pavement Association of Oregon (APAO) |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Oregon | Certified Asphalt Technician II (ACP Troubleshooting, CAT-2) | Prerequisite CAT-1, training through APAO |
| Oregon | Concrete Quality Control Technician (QCT) | Oregon supplemental test conducted by OCAPA, Prerequisite is ACI-CFT Grade 1 |
| Oregon | Concrete Control Technician (Concrete Mix Design, ACI 211) (CCT) | Prerequisite is ACI -CFT Grade 1 and Concrete QCT. Training through Oregon Concrete and Aggregate Producers Association (OCAPA) |
| Oregon | Concrete Mix Design Technician, ACP Mix Design (Superpave) (CMDT) | Training through APAO |
| Oregon | Certified Aggregate Technician (CAgT) | WAQTC Equivalent (AgTT) (practices and methods are listed after state DOTs), training through APAO |
| Oregon | Certified Embankment Technician (CEBT) | WAQTC Equivalent (EBTT) (practices and methods are listed after state DOTs), training through APAO |
| Oregon | Concrete Strength Testing Technician (CSTT) | Training through ACI Oregon |
| Oregon | Certified Density Technician (CDT) | WAQTC Equivalent (DTT) (practices and methods are listed after state DOTs), training through APAO |
| Oregon | Certified Traffic Signal Inspector (CTSI) | Inspection certifications found at: https://www.oregon.gov/odot/Construction/Pages/InspectorCertification-Program.aspx |
| Oregon | ADA Curb Ramp Inspection Certification | Online training only |
| Oregon | Certified Bridge Construction Inspector | |
| Oregon | Asphalt Concrete Pavement Inspector (ACPI) | |
| Oregon | Certified Environmental Construction Inspector (CECI) | |
| Oregon | Certified Drilled Shaft Inspector (CDSI) | |
| Oregon | Certified General Construction Inspector (CGCI) | |
| Oregon | Certified Traffic Control Tech (TCT) | |
| Oregon | Certified Traffic Control Supervisor (TCS) | |
| Oregon | Erosion and Sediment Control Manager (ESCM) | |
| Oregon | Certified Water Quality Inspector (CWQI) | |
| Pennsylvania | Bituminous Plant Technician in Training | |
| Pennsylvania | Bituminous Level 1 Plant Technician | MARTCP partially recognized in Publication 351 |
| Pennsylvania | Bituminous Level 2 Plant Technician | MARTCP partially recognized in Publication 351 |
| Pennsylvania | Bituminous Field Technician in Training | |
| Pennsylvania | Bituminous Field Technician | MARTCP partially recognized in Publication 351 |
| Pennsylvania | Concrete | ACI-CFT Grade 1 and PennDOT course R60, T119, T121, T152, T196, T309 and 1 PTM |
| Pennsylvania | Aggregate Technician | R90, T19, R76, D4791, D5281, and 3 PTM methods |
| Puerto Rico | Asphalt Level 1 | Listed on NCAT website but no other information found |
| Puerto Rico | Roadway Tech | Listed on NCAT website but no other information found |
| Puerto Rico | Earthwork/Base Tech | Listed on NCAT website but no other information found |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Rhode Island | HMA Plant | NETTCP (practices and methods are listed after state DOTs) |
| Rhode Island | QAT | NETTCP (practices and methods are listed after state DOTs) |
| Rhode Island | Concrete Tech | NETTCP (practices and methods are listed after state DOTs) |
| South Carolina | Concrete Technician Level 1 Batching Certification | ACI-CFT Grade 1 prerequisite |
| South Carolina | Concrete Technician Level 2 Inspector Certification | ACI-CFT Grade 1 prerequisite |
| South Carolina | Coarse Aggregate Level 1 Sampling and Grading Technician | T27, R76, R90 |
| South Carolina | Coarse Aggregate Level 2 Testing Technician | T85, T96, T104, T176, SCT77 (Flat and Elongated), and Level 1 is prerequisite |
| South Carolina | Earthwork and Base Course/Nuclear Gauge Technician | SC Methods (SCT 1, 2, 22, 29, and 30 or 31 or 32) |
| South Carolina | Foundations Technician (Drilled shaft or Pile driving) | Exams for each, technician can get both, ACI-CFT Grade 1 is prerequisite |
| South Carolina | Asphalt Roadway Technician (ART) | 2 ½ day course. Roadway inspection and SCDOT procedures and specifications. |
| South Carolina | HMA Level 1 Asphalt Quality Control Technician | SC Methods (SCT1,2,68,75,76,83,96,103) |
| South Carolina | HMA Level 2 Asphalt Job Mix Technician | Volumetrics and Level 1 is prerequisite |
| South Carolina | HMA Level 3 Quality Control Manager | Level 1 and 2 are prerequisites |
| South Carolina | Pavement Preservation Level 1: Asphalt Seal Coats, Micro/Slurry Seals, and Concrete Pavements | |
| South Carolina | Nuclear Gauge Safety Training Program (SCDOT only) | |
| South Carolina | Field Welder Certification | |
| South Dakota | SDDOT+ Fresh Concrete Testing Certification | SD Specifications class |
| South Dakota | Aggregate Testing | SD Test Methods 201-203, 206-208, 211-214, 219 Sampling, quartering, PI, moisture, etc. |
| South Dakota | Asphalt Aggregate Testing | SD Test Methods 108, 201-202, 208, 211-214, 217, 221 Sampling, quartering, PI, moisture, etc. |
| South Dakota | Hot Mix Testing | SD Test Methods 301, 305, 306, 307, 311, 312, 314, 315, 317, 318, 321, 502 Sampling, splitting, draindown, Rice, Dryback, Gyratory |
| South Dakota | Fresh Concrete | SD Test Methods 402, 403, 404, 405, 408, 411 |
| South Dakota | QC/QA Asphalt Concrete Aggregate Testing | SD Test Methods 201, 202, 211, 213, 217, 221, 208, 214 Sampling and splitting, gradation, fractured faces, FAA, SE, lightweight particles |
| South Dakota | QC/QA Asphalt Concrete Hot Mix Testing (DAPA) | SD Test Methods 301, 305, 306, 312, 313, 315, 318 Sampling, splitting, draindown, Rice, Dryback, Gyratory |
| South Dakota | QC/QA Asphalt Concrete Roadway Inspection (AI) | AI Class |
| South Dakota | QC/QA Asphalt Concrete Mix Design and Production Control (DAPA) | QC/QA training manual and AI MS-2 |
| South Dakota | Soils Testing | SD Test Methods 103-106, 108, 110, 114 Classification, density |
| South Dakota | Earthwork, Pipe installation, Erosion Control | |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| South Dakota | Structures | |
| South Dakota | Concrete Paving | |
| South Dakota | Concrete Plants | |
| South Dakota | Asphalt Aggregate Testing | |
| South Dakota | Erosion and Sediment Control | |
| Tennessee | Aggregate Certified Testing Technician | R76, R90, T11, T27, T84, T85, T96, T104, T255 |
| Tennessee | Concrete Certified Field Technician | R100, T119, T121, T141, T153, T196, T309, C1611 |
| Tennessee | Concrete Plant QC Tech nician | R76, R90, T11, T27, T255 prerequisites Concrete Field Tech |
| Tennessee | Concrete Mix Design | R39, T22 prerequisite Concrete Field Test Tech and Concrete Plant QC Tech |
| Tennessee | HMA Certified Roadway | Inspection |
| Tennessee | HMA Certified Plant Technician | R90, T11, T27, T30, T84, T85, T164, T166, R97, T209, R76, T255, T308 and 4 TDOT methods |
| Tennessee | HMA Mix Design | R90, T11, T27, T84, T85, T166, T176, T209, T245, R76, T304, T308, TP4, D4867, D4791 and 4 TDOT methods |
| Tennessee | Radiation Safety and Nuclear Gauge | TDOT Only |
| Tennessee | Self-Consolidating Concrete | T347/C1611, T345/C1621, C1758 |
| Tennessee | Soils Tech | Density |
| Tennessee | Asphalt Surface Treatments | Online presentation |
| Texas | ACI Concrete Field Testing Technician-Grade 1 | ACI-CFT Grade 1 |
| Texas | ACI Concrete Strength Testing Technician | ACI-CST Grade 1 |
| Texas | TXAPA Aggregate Specialist-AGG101 | All Test Methods are TXDOT Methods, but QAP_DB document includes ASTM and AASHTO equivalents for labs in appendix H |
| Texas | TXAPA HMA Plant Production Specialist - Level 1A | QAP_DBB document Appendix E includes Test Methods for the different certs |
| Texas | TXAPA HMA Roadway Specialist - Level 1B | All TXDOT methods |
| Texas | TXAPA HMA Mix Design Specialist - Level 2 | All TXDOT methods |
| Texas | TXAPA Properties Specialist - SB 101 | All TXDOT methods |
| Texas | TXAPA Field Specialist -SB 102 | All TXDOT methods |
| Texas | TXAPA Materials Analyst Specialist - SB 103 | All TXDOT methods |
| Texas | TXAPA Strength Specialist -SB 201 | All TXDOT methods |
| Texas | TXAPA Compressive Strength Specialist - SB 202 | All TXDOT methods |
| Texas | Other qualifications can be performed by MTD personnel or District Lab personnel who have been certified to perform qualifications | |
| Texas | TXHMAC website also includes a Seal Coat Inspector and Specialist (SC101 and SC102) and Binder 101 (PG/AC Specialist) and notes that Binder 102 Cert (Emulsion/Cutback) is coming | https://www.txhmac.org/certifications/ |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Utah | Aggregate (AgTT) | WAQTC (practices and methods are listed after state DOTs) |
| Utah | Asphalt II (AsTT II) | WAQTC (practices and methods are listed after state DOTs) |
| Utah | Concrete (CTT) | WAQTC (practices and methods are listed after state DOTs) or accept ACI-CFT Grade 1 |
| Utah | Self-Consolidating Concrete (SCCTT) | WAQTC (practices and methods are listed after state DOTs) |
| Utah | Embankment & Base Testing Technician (EBTT) | WAQTC (practices and methods are listed after state DOTs) |
| Utah | In-Place Density Testing (DTT) | WAQTC (practices and methods are listed after state DOTs) |
| Utah | UDOT Superpave Mix Design and Analysis (SMD) | M323, M325, R30, R35, R46, T305, T312, T324, T325 and 5 UDOT Methods Prerequisites are AsTT II and AgTT Plus |
| Utah | UDOT Laboratory Testing Technician (LbTT) | T19, T21, T84, T96, T104, T112, T113, T193, T204 Prerequisites are AgTT Plus and EbTT Plus |
| Utah | UDOT Concrete Strength Testing Technician (CsTT) | R100, T22, T97, T231, C1231 or ACI-CFT Grade 1 |
| Utah | UDOT Aggregate Plus Testing Technician (AgTT Plus) | WAQTC AgTT (practices and methods are listed after state DOTs) and T19 and T85 |
| Utah | UDOT Embankment Plus Testing Technician (EBTT Plus) | WAQTC EBTT (practices and methods are listed after state DOTs) and T89 and T90 |
| Utah | UDOT Sampling, Reduction and Density Testing Technician (SRDTT) | R47, R66, R76, R90, R97, T310, T355 and 2 UDOT methods |
| Utah | UDOT Sampling, Reduction Testing Technician (SRTT) | R47, R66, R76, R90, R97 and 2 UDOT methods |
| Utah | UDOT Profilograph (PO) | |
| Utah | UDOT Reciprocity ACI | |
| Utah | UDOT Reciprocity WAQTC | |
| Vermont | HMA Testing | NETTCP Asphalt Plant Tech required (practices and methods are listed after state DOTs) or Online TC3 and on-the-job training |
| Vermont | NETTCP QAT | NETTCP QAT (practices and methods are listed after state DOTs) |
| Vermont | Aggregate Testing | NETTCP Aggregate required (practices and methods are listed after state DOTs) or Online TC3 and on-the-job training |
| Vermont | ACI-CFT Grade 1 required in Specs | ACI-CFT Grade 1 required |
| Vermont | Precast Concrete Strength Testing | ACI-CST or documented on-the-job training |
| Virginia | Asphalt Field Level 1 | VDOT Test methods |
| Virginia | Asphalt Field Level 2 | VDOT Test methods |
| Virginia | Asphalt Plant Level 1 | VDOT Test methods |
| Virginia | Asphalt Plant Level 2 | VDOT Test methods |
| Virginia | Asphalt Plant Mix Design | VDOT Test methods |
| Virginia | Cold Asphalt Recycling Field | VDOT Test methods |
| Virginia | Cold Asphalt Recycling Plant | VDOT Test methods |
| Virginia | Full Depth Reclamation (FDR) | VDOT Test methods |
| Virginia | Slurry Surfacing | VDOT Test methods |
| Virginia | Surface Treatment | VDOT Test methods |
| Virginia | Soils and Aggregate Compaction | 3 day class including nuclear density and one-point proctor - or-NICET CMT Level II |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Virginia | Concrete Plant | 1.5 day class on ACI Mix design and inspection of plants |
| Virginia | Central Mix Aggregate Plant | 2 day class on aggregates and job mixes |
| Virginia | Paving Marking (online only) | online class |
| Virginia | Concrete Certification | ACI-CFT Grade 1 -or- WACEL Concrete Level I -or- NICET CMT Level II Concrete |
| Virginia | CCWA Website also lists a number of Inspector Certification Courses | https://ccwatraining.org/vdot |
| Washington State | Aggregate (AgTT) | WAQTC (practices and methods are listed after state DOTs) |
| Washington State | Asphalt II (AsTT II) | WAQTC (practices and methods are listed after state DOTs) |
| Washington State | Embankment and Base (EBTT) | WAQTC (practices and methods are listed after state DOTs) |
| Washington State | In Place Density (DTT) | WAQTC (practices and methods are listed after state DOTs) |
| Washington State | Embankment & Base/In Place Density (EBTT/DTT) | WAQTC (practices and methods are listed after state DOTs) |
| Washington State | ACI-CFT Grade 1 reciprocity to WAQTC CTT | ACI-CFT Grade 1 or WAQTC CTT (practices and methods are listed after state DOTs) |
| Washington State | Sampling Technician (ST) | R66, R90, R97 |
| Washington State | WSDOT CSTT reciprocity to ACI-CST Grade 1 | C39, C78, C617, C1231, or ACI-CST Grade 1 |
| Washington State | WSDOT Method Qualified Testing Technician (MQTT) | WSDOT Methods |
| West Virginia | PCC Inspector (required for acceptance sampling or testing) | R100, T119, T121, T152, T196 written and proficiency exam, ACI-CFT Grade 1 reciprocity still requires written WVDOH test |
| West Virginia | PCC Technician (cannot perform sampling and testing, but can supervise the Inspector) | R60, R100, T119, T121, T152, T196 only written exam |
| West Virginia | Aggregate Technician | T11, T19, T27, T84, T85, WVDOT methods |
| West Virginia | Asphalt Sampling Inspector | T11, specifications, sampling, and gradation (online class and exam) |
| West Virginia | Asphalt Field & Compaction Technician | Compaction, nuclear gauge |
| West Virginia | Soils and Aggregate Compaction | T99, T180 and Nuclear Gauge |
| West Virginia | Asphalt Plant Technician | R47, R66, R97, T30, T164, T166, T209, T245, T308 T312 |
| West Virginia | Asphalt Preservation Tech | |
| West Virginia | Radiation Safety | 3-4 hrs. classroom and exam |
| Wisconsin | Transportation Materials Sampling Technician (TMS) | WisDOT modified (R90, R97 and D3665) |
| Wisconsin | Aggregate Technician (AGGTEC-I) | T224, WisDOT modified (D3665, R90, T11, T27, T99, T180, T89, T90, T255, D4791, D5821) |
| Wisconsin | Aggregate Testing for Transportation Systems (ATTS) | AGGTEC-1 is prerequisite. T146, R76, WisDOT modified (T96, T103, T104, T89, T90, T85, T113) |
| Wisconsin | Materials Coordinator Training | WisDOT specs, Buy America |
| Wisconsin | Hot Mix Asphalt, Technician I, Production Tester (HMA-IPT) | AGGTEC-1 is prerequisite. T305, WisDOT modified (D3665, T312, T166, T209, T283, R35, R47, T27, T84, T85, T269, T308, D8159), WisDOT method H-003 (ignition oven correction factor) |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
| DOT | Name of Certification | Practices and methods or details about certification |
|---|---|---|
| Wisconsin | Hot Mix Asphalt, Trouble Shooting, Process Control-Level II (HMA-TPC) | HMA-IPT is prerequisite. WisDOT modified (T30, T166, T209, T312, T308, T209, T255, T331, D3665, D8159) |
| Wisconsin | Hot Mix Asphalt, Mix Design, Report Submittals-Level II (HMA-MD) | HMA-IPT is prerequisite. A number of WisDOT modified methods including T305, T283, R35 (mix design) |
| Wisconsin | Concrete Strength Tester (CST) | T231, WisDOT modified (C1231, T22, T24, T97, T358) |
| Wisconsin | Portland Cement Concrete Technician I-Level I (PCCTEC-I) | ACI-CFT Grade 1 is prerequisite. WisDOT modified (T22, T97, T121, R60, R100, T119, T152, D3665, E13209 (MIT Scan)) |
| Wisconsin | Portland Cement Concrete Technician II-Level II (PCCTEC-II) | PCCTEC-1 is prerequisite. T19, WisDOT modified (R90, T84, T85, T96, T103, T 104, T152, TP118 (SAM) and Box Test, D4791) |
| Wisconsin | Grading Technician I (GRADINGTEC-I) | WisDOT modified (D3665, T99, T180, T272, T89, T90) |
| Wisconsin | Profiler Level I (PROFILER) | |
| Wisconsin | Nuclear Density Technician I (NUCDENSITYTEC-I) | WisDOT modified (D3665, T99, T180, T310, T355) |
| Wyoming | Soils and Aggregate Technician | T11, T27, T89, T90, R76, Wyoming modified |
| Wyoming | Asphalt Concrete Technician | T166, T275, Wyoming modified |
| Wyoming | Portland Cement Concrete Technician | C31, C138, C143, C172, C231, C1064, Wyoming modified |
| NETTCP | Soil and Aggregate Inspector | R90, D3665, R76, T27, T11, T311, T255, T99, T180, T191, T310, T224, T272, D2448, proficiency required for some tests |
| NETTCP | Asphalt Plant Technician | R90, R76, T27, T11, R97, T164 or T308, T30, T312, R66, T304, D5321, T176, D4791, T84, T166, PP19, T255, T209, D3549, D3665 |
| NETTCP | Concrete Inspector | D3665 Random Sampling no performance exam |
| NETTCP | Concrete Technician | R90, D3665, R76, T27, T255 (all written exam topics) and ACI-CFT Grade 1 |
| NETTCP | Drilled Shaft Foundation Inspector | |
| NETTCP | Driven Pile Foundation Inspector | |
| NETTCP | Paving Inspector | D3665, R97, T166, T209, T269, D2950 no performance exam |
| NETTCP | PG Asphalt Binder Technician | D3665, M320, R28, R29, R66, T48, T228, T240, T316, T315, T313 |
| NETTCP | Precast Concrete Inspector | |
| NETTCP | Quality Assurance Technologist | |
| NETTCP | Soil and Aggregate Lab Technician | R90, T11, T21, T27, T84, T85, T88, T89, T90, T96, T99, T180, T104, T176, T224, R76, T255, T304, T311, D2448, D3665, D4791, D5821, proficiency required for some tests |
| NETTCP | Sub-Surface Inspector | |
| WAQTC | Aggregate (AgTT) | R76, R90, T11, T27, T176, T255, T335 |
| WAQTC | Asphalt I (AsTT I) | R47, R66, R97, T30, T166, T209, T308, T329 |
| WAQTC | Asphalt II (AsTT II) | R47, R66, R97, T30, T166, T209, T308, T 312, T329, WAQTC TM 13 Volumetrics |
| WAQTC | Concrete (CTT) | R100, T119, T121, T152, T309, and WAQTC TM2 for sampling |
| WAQTC | Embankment and Base (EBTT) | R75, T85, T99, T180, T255, T265 |
| WAQTC | In Place Density (DTT) | T99, T166, T180, T209, T255, T265, T272, T310, T355 |
| WAQTC | Embankment & Base/In Place Density | R75, T85, T99, T166, T180, T209, T255, T265, T272, T310, T355 |
| WAQTC | Self-Consolidating Concrete | T347, T345, and WAQTC TM 18 and 19 |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
This page intentionally left blank.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Abbreviations and acronyms used without definitions in TRB publications:
| A4A | Airlines for America |
| AAAE | American Association of Airport Executives |
| AASHO | American Association of State Highway Officials |
| AASHTO | American Association of State Highway and Transportation Officials |
| ACI–NA | Airports Council International–North America |
| ACRP | Airport Cooperative Research Program |
| ADA | Americans with Disabilities Act |
| APTA | American Public Transportation Association |
| ASCE | American Society of Civil Engineers |
| ASME | American Society of Mechanical Engineers |
| ASTM | American Society for Testing and Materials |
| ATA | American Trucking Associations |
| CTAA | Community Transportation Association of America |
| CTBSSP | Commercial Truck and Bus Safety Synthesis Program |
| DHS | Department of Homeland Security |
| DOE | Department of Energy |
| EPA | Environmental Protection Agency |
| FAA | Federal Aviation Administration |
| FAST | Fixing America’s Surface Transportation Act (2015) |
| FHWA | Federal Highway Administration |
| FMCSA | Federal Motor Carrier Safety Administration |
| FRA | Federal Railroad Administration |
| FTA | Federal Transit Administration |
| GHSA | Governors Highway Safety Association |
| HMCRP | Hazardous Materials Cooperative Research Program |
| IEEE | Institute of Electrical and Electronics Engineers |
| ISTEA | Intermodal Surface Transportation Efficiency Act of 1991 |
| ITE | Institute of Transportation Engineers |
| MAP-21 | Moving Ahead for Progress in the 21st Century Act (2012) |
| NASA | National Aeronautics and Space Administration |
| NASAO | National Association of State Aviation Officials |
| NCFRP | National Cooperative Freight Research Program |
| NCHRP | National Cooperative Highway Research Program |
| NHTSA | National Highway Traffic Safety Administration |
| NTSB | National Transportation Safety Board |
| PHMSA | Pipeline and Hazardous Materials Safety Administration |
| RITA | Research and Innovative Technology Administration |
| SAE | Society of Automotive Engineers |
| SAFETEA-LU | Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) |
| TCRP | Transit Cooperative Research Program |
| TEA-21 | Transportation Equity Act for the 21st Century (1998) |
| TRB | Transportation Research Board |
| TSA | Transportation Security Administration |
| U.S. DOT | United States Department of Transportation |
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
Suggested Citation:
"Appendix F: Summary of Certification Information Gathered from State Websites." National Academies of Sciences, Engineering, and Medicine. 2025. State DOT Certification Programs for Materials Sampling and Testing Personnel. Washington, DC: The National Academies Press.
doi: 10.17226/28849.
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