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- Information for David Walker
Technician Information for David Walker
| First Name | David |
|---|
| Last Name | Walker |
|---|
| Technician ID | 02585 |
|---|
California Test (CT) Certifications
Total 30 items.
| Test Method | Expiration Date | Status | IA Responsible | Within Lab(s) Scope | Comments |
|---|
| CT 105 Calculations - Gradings (JTCP - HMA I / S&A) | 2026-03-10 | Active | David Medina | Lab 1 | (No comments) |
| CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A) | 2026-03-10 | Active | David Medina | Lab 1, Lab 2 | (No comments) |
| CT 201 Sample Preparation - Soil and Aggregates (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1, Lab 2 | (No comments) |
| CT 202 Sieve analysis - Fine and Coarse Aggregates (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1, Lab 2 | (No comments) |
| CT 205 Percent Crushed Particles (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1 | (No comments) |
| CT 217 Sand Equivalent (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1, Lab 2 | (No comments) |
| CT 226 Moisture Content - Soils and Aggregates (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1, Lab 2 | (No comments) |
| CT 227 Cleanness Value (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1, Lab 2 | (No comments) |
| CT 229 Durability (JTCP - S&A) | 2026-03-10 | Active | David Medina | Lab 1 | (No comments) |
| CT 206 SpG & Absorption - Coarse Aggregates | 2025-11-30 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 207 SpG & Absorption - Fine Aggregates | 2025-11-30 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 211 LA Rattler | 2025-11-30 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 370 Moisture Content by Microwave | 2025-11-30 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 382 AC Content by Ignition Oven | 2025-11-30 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 389 Hamburg Wheel-Track | 2025-11-30 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 125 HMA Sampling - HMA (JTCP - HMA I) | 2025-11-18 | Active | Dalton LaBoskey | Lab 1, Lab 2 | (No comments) |
| CT 306 Reducing Samples of Asphalt Mixtures (JTCP - HMA I) | 2025-11-18 | Active | Dalton LaBoskey | (No lab) | (No comments) |
| CT 106 Definitions - Specific Gravity (SpG) | 2025-08-21 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 235 Flat and Elongated Particles | 2025-03-14 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 304 Sample Preparation - HMA | 2025-03-14 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 308 Bulk SpG and Density - HMA | 2025-03-14 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 309 Max SpG and Density - HMA | 2025-03-14 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 371 Moisture Induced Damage (TSR) | 2025-03-14 | Active | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 367 OBC | 2024-09-07 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 384 Combined Grade for HMA using up to 25% RAP | 2024-09-07 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 125 BIT Sampling - BITUMINOUS | 2024-06-27 | Active | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 366 Stabilometer | 2023-03-01 | Expired | Roy(Chip) Denner | Lab 1 | (No comments) |
| CT 125 AGG Sampling - AGGREGATES | 2022-12-06 | Expired | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 125 GEN Sampling - GENERAL | 2022-12-06 | Expired | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
| CT 125 HMA Sampling - HMA | 2022-12-06 | Expired | Roy(Chip) Denner | Lab 1, Lab 2 | (No comments) |
AASHTO/ASTM Proficiencies
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