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WSP USA Inc.

Phoenix, Arizona

View Accreditation Certificate
Brain Waterbury
3630 East Wier Avenue Phoenix , Arizona 85040

Phone: (480) 519-9086 Fax: brian.waterbury@wsp.com http://www.wsp.com

Quality Management System - accredited since 6/1/1991
R18, C1077 (Aggregate), C1077 (Concrete), C1093 (Masonry), D3666 (Aggregate), D3666 (Asphalt Binder), D3666 (Asphalt Mixture), D3666 (Emulsified Asphalt), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Binder), E329 (Asphalt Mixture), E329 (Concrete), E329 (Emulsified Asphalt), E329 (Masonry), E329 (Soil)

Asphalt Binder - accredited since 2/1/1993
R28, R29, T44, T48, T49, T50, T51, T53, T55, T78, T79, T111, T201, T202, T228, T240, T295, T301, T313, T315, T316, T350, D5, D36, D70, D92, D95, D113, D139, D243, D402, D2042, D2170, D2171, D2872, D3142, D3143, D4402, D6084, D6521, D6648, D7175, D7405, D8078

Emulsified Asphalt - accredited since 2/1/1993
T59 / D6930 (Settlement and Storage Stability)
T59 / D6933 (Sieve Test)
T59 / D6934 (Residue by Evaporation)
T59 / D6935 (Cement Mixing)
T59 / D6936 (Demulsibility)
T59 / D6937 (Density)
T59 / D6997 (Residue by Distillation)
T59 / D6998 (Aggregate Coating)
T59 / D7402 (Particle Charge)
T59-T72 / D7496-D88 (Saybolt Furol Viscosity at 25°C (77°F))
T59-T72 / D7496-D88 (Saybolt Furol Viscosity at 50°C (122°F))
D6929 (Freezing)

Pavement Preservation - accredited since 5/26/2017
TB-106 / D3910 (Measurement of Slurry Seal Consistency (Cone Consistency))
TB-144 / D6372 (Classification of Micro-Surfacing Materials Compatibility (SBR))
TB-147 / D6372 (Loaded Wheel Test, Vertical and Lateral Displacement of Cold Mixes (LWT))
TB-139 / D3910/D6372 (Set and Cure Development of Slurry Surfacing Systems by Cohesion Tester)
TB-100 / D3910/D6372 (Wet Track Abrasion Of Slurry Surfacing Systems)
TB-109 (Excess Asphalt in Bituminous Mixtures by Loaded Wheel and Sand Adhesion)
TB-113 (Determining Mix Time for Slurry Surfacing Systems)
TB-114 (Wet Stripping of Cured Slurry Surfacing Mixtures)
D7000 (Sweep Test of Bituminous Emulsion Surface Treatment)
D3910/D6372 (Determining Set Time for Slurry Seal and Micro-Surfacing Systems (Blot Test))

Asphalt Mixture - accredited since 6/1/1991
R30, R35, R47, R59, R68, R97, T30, T110, T164, T166, T167, T209, T245, T269, T275, T283, T287, T305, T308, T312, T324, T329, T340, T355, D979, D1074, D1075, D1188, D1461, D1856, D2041, D2172, D2726, D2950, D3203, D3549, D3665, D4125, D4867, D5404, D5444, D6307, D6390, D6925, D6926, D6927, D8225

Soil - accredited since 6/1/1991
R58, R74, T88, T89, T90, T99, T100, T134, T135, T136, T180, T190, T191, T193, T208, T216, T217, T236, T265, T267, T288, T289, T296, T297, T310, T311, D421, D422, D558, D559, D560, D698, D854, D1140, D1556, D1557, D1633, D1883, D2166, D2216, D2435, D2487, D2488, D2844, D2850, D2974, D3080, D4253, D4254, D4318, D4546, D4643, D4718, D4767, D4829, D4944, D5084, D6913, D6938, G187

Rock - accredited since 3/13/2013
D4644

Aggregate - accredited since 6/1/1991
R76, R90, T11, T19, T21, T27, T37, T84, T85, T96, T100 (Mineral Filler), T104, T112, T113, T176, T210, T255, T304, T335, C29, C40, C88, C117, C123, C127, C128, C131, C136, C142, C535, C566, C702, C1252, D75, D546, D2419, D3744, D4791, D5821

Concrete - accredited since 6/1/1991
M201, R39, R60, R100 (Beams), R100 (Cylinders), R115, T22, T24 (Testing Drilled Cores of Concrete), T97, T119, T121, T152, T160, T196, T231 (8000 psi and below), T303, T309, C31 (Beams), C31 (Cylinders), C39, C42 (Testing Drilled Cores of Concrete), C78, C138, C143, C157, C172, C173, C192, C231, C305, C511, C617 (8000 psi and below), C1064, C1231 (7000 psi and below), C1260, C1542, C1567

Masonry - accredited since 4/29/2014
C140 (Concrete Masonry Units) (Sampling and Testing Concrete Masonry Units and Related Units)
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C780 (Annex 1) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Consistency by Cone Penetration)
C780 (Annex 6 - Cubes) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cubes)
C1019 (Sampling and Testing Grout)
C1552 (Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing)

Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.

* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.