SIAD: Certificates for Joshua Gumbish
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Certificates for Joshua Gumbish

Basic Information

First NameJoshua
Last NameGumbish
StatusActive

Associated Labs

Total 2 items.
Lab NameManager NameFull AddressDistrictPage Alias
Garco Testing Laboratories - San JoseHongbin Xie2326 Kruse Drive, San Jose, CA 951314Lab 1
GarcoTesting Laboratories - PleasantonHongbin Xie1544 Stanley Boulevard, Pleasanton, CA 945664Lab 2

Test Methods

California Test (CT) Certifications

Total 6 items.
Test MethodExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
CT 105 Calculations - Gradings (JTCP - HMA I / S&A)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
CT 125 HMA Sampling - HMA (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
CT 231 Relative Compaction - Nuclear Gage 2025-10-04ActiveDavid SmallLab 1(No comments)
CT 306 Reducing Samples of Asphalt Mixtures (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
CT 375 AC Density by Nuclear Gage 2025-10-04ActiveDavid SmallLab 1(No comments)

AASHTO/ASTM Proficiencies

Total 13 items.
Test MethodExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
AASHTO T11 Sieve Analysis (Washing) - Fine Aggregates (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T27 Sieve Analysis - Fine and Coarse Aggregates (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO R47 Reducing Samples of HMA (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO R76 Reducing Samples of Agg (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 2(No comments)
AASHTO T166 Bulk SpG of Compacted HMA - SSD (JTCP - HMA II)2024-12-02ActiveSoroosh AmelianLab 1, Lab 2(No comments)
AASHTO T176 Sand Equivalent (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T209 Max SpG and Density - HMA (JTCP - HMA II)2024-12-02ActiveSoroosh AmelianLab 1, Lab 2(No comments)
AASHTO T255 Evaporable Moisture Content (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T269 Percent Air Voids - HMA (JTCP - HMA II)2024-12-02ActiveSoroosh AmelianLab 1, Lab 2(No comments)
AASHTO T275 Bulk SpG - HMA (JTCP - HMA II)2024-12-02ActiveSoroosh AmelianLab 1, Lab 2(No comments)
AASHTO T308 AC Content (Ignition Oven) - HMA (JTCP - HMA II)2024-12-02ActiveSoroosh AmelianLab 1, Lab 2(No comments)
AASHTO T329 Moisture Content (Oven Method) - HMA (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)
AASHTO T335 Percentage of Fracture (JTCP - HMA I)2025-05-13ActiveDalton LaBoskeyLab 1, Lab 2(No comments)