Technician Information for Nathaniel Guzman

First NameNathaniel
Last NameGuzman
Technician ID06898
Download TL-0111

Associated Labs

Total 3 items.
Lab NameManager NameFull AddressDistrictPage Alias
CalPortland ConstructionDavid VanMuyden1625 East Donovan Road, Santa Maria, CA 934545Lab 1
CalPortland ConstructionDavid VanMuyden4680 Santa Maria Mesa Road, Garey, CA 934545Lab 2
CalPortland - Paso PlantDavid VanMuyden188 Volpi Ysabel Road, Paso Robles, CA 934465Lab 3

Test Methods

California Test (CT) Certifications

Total 16 items.
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
CT 105 Calculations - Gradings (JTCP - HMA I / S&A)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
CT 125 HMA Sampling - HMA (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
CT 306 Reducing Samples of Asphalt Mixtures (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2(No comments)
CT 370 Moisture Content by Microwave 2026-03-252027-03-25ActiveSalvador Lopez-ZamoraLab 1, Lab 2, Lab 3(No comments)
CT 384 Combined Grade for HMA using up to 25% RAP 2026-03-252027-03-25ActiveSalvador Lopez-ZamoraLab 1, Lab 2, Lab 3(No comments)
CT 504 Air Content of PCC - Pressure Method (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 518 Unit Weight - PCC (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 521.1 Compressive Strength - PCC (ASTM C39 / C617) 2026-03-252027-03-25ActiveSalvador Lopez-ZamoraLab 1(No comments)
CT 521.2 Compressive Strength - PCC (ASTM C39 / C1231) 2026-03-252027-03-25ActiveSalvador Lopez-ZamoraLab 1(No comments)
CT 523.1 Section B.1 & B.2 Flexural Strength (Field Fabrication) (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 539 Sampling Fresh Concrete (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 540 Making Cylinders - PCC (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 543 Air Content of PCC - Volumetric Method (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 556 Slump - PCC (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)
CT 557 Temperature - PCC (JTCP - PCC)2025-03-042030-03-04ActiveGabriela LopezLab 1(No comments)

AASHTO/ASTM Proficiencies

Total 9 items.
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
AASHTO T11 Sieve Analysis (Washing) - Fine Aggregates (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO T27 Sieve Analysis - Fine and Coarse Aggregates (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO R47 Reducing Samples of HMA (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO R76 Reducing Samples of Agg (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO T176 Sand Equivalent (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO T255 Evaporable Moisture Content (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO T329 Moisture Content (Oven Method) - HMA (JTCP - HMA I)2024-10-182027-10-18ActiveFirooz Ahmad HosainyLab 1, Lab 2, Lab 3(No comments)
AASHTO T335 Percentage of Fracture (JTCP - HMA I)2024-10-182027-10-18ActiveSarmad DalalLab 1, Lab 2, Lab 3(No comments)
AASHTO T96 L.A. Rattler 2026-03-032028-03-03ActiveSalvador Lopez-ZamoraLab 1(No comments)

JTCP Sessions