Technician Information for David Walker

First NameDavid
Last NameWalker
Technician ID02585

Associated Labs

Total 2 items.
Lab NameManager NameFull AddressDistrictPage Alias
Martin MariettaDavid Walker12560 CA-67, Lakeside, CA 9204011Lab 1
Martin Marietta Slaughterhouse LabDavid Walker12535 Vigilante Rd, Lakeside, CA 9204011Lab 2

Test Methods

California Test (CT) Certifications

Total 30 items.
Test MethodExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
CT 125 AGG Sampling - AGGREGATES 2022-12-06ExpiredRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 125 GEN Sampling - GENERAL 2022-12-06ExpiredRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 125 HMA Sampling - HMA 2022-12-06ExpiredRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 366 Stabilometer 2023-03-01ExpiredRoy(Chip) DennerLab 1(No comments)
CT 125 BIT Sampling - BITUMINOUS 2024-06-27ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 367 OBC 2024-09-07ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 384 Combined Grade for HMA using up to 25% RAP 2024-09-07ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 235 Flat and Elongated Particles 2025-03-14ActiveRoy(Chip) DennerLab 1(No comments)
CT 304 Sample Preparation - HMA 2025-03-14ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 308 Bulk SpG and Density - HMA 2025-03-14ActiveRoy(Chip) DennerLab 1(No comments)
CT 309 Max SpG and Density - HMA 2025-03-14ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 371 Moisture Induced Damage (TSR) 2025-03-14ActiveRoy(Chip) DennerLab 1(No comments)
CT 106 Definitions - Specific Gravity (SpG) 2025-08-21ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 125 HMA Sampling - HMA (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
CT 306 Reducing Samples of Asphalt Mixtures (JTCP - HMA I)2025-11-18ActiveDalton LaBoskey(No lab)(No comments)
CT 206 SpG & Absorption - Coarse Aggregates 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
CT 207 SpG & Absorption - Fine Aggregates 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
CT 211 LA Rattler 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
CT 370 Moisture Content by Microwave 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
CT 382 AC Content by Ignition Oven 2025-11-30ActiveRoy(Chip) DennerLab 1, Lab 2(No comments)
CT 389 Hamburg Wheel-Track 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
CT 105 Calculations - Gradings (JTCP - HMA I / S&A)2026-03-10ActiveDavid MedinaLab 1(No comments)
CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A)2026-03-10ActiveDavid MedinaLab 1, Lab 2(No comments)
CT 201 Sample Preparation - Soil and Aggregates (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1, Lab 2(No comments)
CT 202 Sieve analysis - Fine and Coarse Aggregates (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1, Lab 2(No comments)
CT 205 Percent Crushed Particles (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1(No comments)
CT 217 Sand Equivalent (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1, Lab 2(No comments)
CT 226 Moisture Content - Soils and Aggregates (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1, Lab 2(No comments)
CT 227 Cleanness Value (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1, Lab 2(No comments)
CT 229 Durability (JTCP - S&A)2026-03-10ActiveDavid MedinaLab 1(No comments)

AASHTO/ASTM Proficiencies

Total 17 items.
Test MethodExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
AASHTO T30 Mechanical Analysis of Extracted Aggregate 2024-06-27ActiveRoy(Chip) Denner(No lab)(No comments)
AASHTO T312 Gyratory Compactor 2025-01-31ActiveRoy(Chip) DennerLab 1(No comments)
AASHTO T11 Sieve Analysis (Washing) - Fine Aggregates (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1(No comments)
AASHTO T27 Sieve Analysis - Fine and Coarse Aggregates (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1(No comments)
AASHTO R47 Reducing Samples of HMA (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO R76 Reducing Samples of Agg (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T176 Sand Equivalent (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1(No comments)
AASHTO T255 Evaporable Moisture Content (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T329 Moisture Content (Oven Method) - HMA (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T335 Percentage of Fracture (JTCP - HMA I)2025-11-18ActiveDalton LaBoskeyLab 1(No comments)
AASHTO T283 Moisture Induced Damage (TSR) 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
AASHTO T324 Hamburg Wheel-Track 2025-11-30ActiveRoy(Chip) DennerLab 1(No comments)
AASHTO T166 Bulk SpG of Compacted HMA - SSD (JTCP - HMA II)2026-09-14ActiveAvinash RallaLab 1(No comments)
AASHTO T209 Max SpG and Density - HMA (JTCP - HMA II)2026-09-14ActiveAvinash RallaLab 1, Lab 2(No comments)
AASHTO T269 Percent Air Voids - HMA (JTCP - HMA II)2026-09-14ActiveAvinash RallaLab 1(No comments)
AASHTO T275 Bulk SpG - HMA (JTCP - HMA II)2026-09-14ActiveAvinash RallaLab 1(No comments)
AASHTO T308 AC Content (Ignition Oven) - HMA (JTCP - HMA II)2026-09-14ActiveAvinash RallaLab 1, Lab 2(No comments)