Technician Information for David Bristow

First NameDavid
Last NameBristow
Technician ID05097

Associated Labs

Total 2 items.
Lab NameManager NameFull AddressDistrictPage Alias
Blackburn ConsultingBenjamin Lokteff2491 Boatman Avenue, West Sacramento, CA 956913Lab 1
Pavement Engineering, IncorporatedJonathan Edholm3680 Industrial Boulevard, Suite 400, West Sacramento, CA 956903Lab 2

Test Methods

California Test (CT) Certifications

Total 17 items.
Test MethodExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
CT 105 Calculations - Gradings (JTCP - HMA I / S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 201 Sample Preparation - Soil and Aggregates (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 202 Sieve analysis - Fine and Coarse Aggregates (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 205 Percent Crushed Particles (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1(No comments)
CT 216 Relative Compaction - Soils and Aggregates (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 217 Sand Equivalent (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 226 Moisture Content - Soils and Aggregates (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 227 Cleanness Value (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 229 Durability (JTCP - S&A)2027-02-09ActiveFirooz Ahmad HosainyLab 1, Lab 2(No comments)
CT 301 "R" Value 2025-07-28ActiveIgnocencio HerreraLab 1(No comments)
CT 308 Bulk SpG and Density - HMA 2022-06-22ExpiredJackie TreatLab 1, Lab 2(No comments)
CT 309 Max SpG and Density - HMA 2022-06-22ExpiredJackie TreatLab 1, Lab 2(No comments)
CT 125 AGG Sampling - AGGREGATES 2022-05-18ExpiredJackie Treat(No lab)(No comments)
CT 125 GEN Sampling - GENERAL 2022-05-18ExpiredJackie TreatLab 1, Lab 2(No comments)
CT 125 HMA Sampling - HMA 2022-05-18ExpiredJackie Treat(No lab)(No comments)
CT 231 Relative Compaction - Nuclear Gage 2022-05-18ExpiredJackie TreatLab 1, Lab 2(No comments)

AASHTO/ASTM Proficiencies