Lab details for NAI Laboratory

Basic Information

Lab NameNAI Laboratory
Manager NameStephen James
Lab Emailstephen@northernaggregates.com
Lab Telephone707-830-0700
Lab Fax
Lab Full Address16410 North Highway 101, Willits, CA 95490
Zip95490
Lab TypePrivate
District1
Mobile Lab Full Address, ,
Download TL-0113

RSP Information

16410 N. Hwy 101, Willits, CA 95490

Test Methods

California Test (CT) Accreditations

Total 24 items.
Test MethodObtained DateExpiration DateStatusIA ResponsibleTechnician Certified?Comments
CT 235: Flat and Elongated Particles2024-12-032025-12-03ExpiredAlexis EnglandYes(not set)
CT 105: Calculations - Gradings (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 106: Definitions - Specific Gravity (SpG)2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 125 AGG: Sampling - AGGREGATES2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 125 AGG: Sampling - AGGREGATES (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 125 GEN: Sampling - GENERAL2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 204: LL, PL, PI2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 205: Percent Crushed Particles (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 206: SpG & Absorption - Coarse Aggregates2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 207: SpG & Absorption - Fine Aggregates2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 212: Unit Weight of Aggregates2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 217: Sand Equivalent (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 226: Moisture Content - Soils and Aggregates (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 227: Cleanness Value (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 229: Durability (JTCP)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 504: Air Content of PCC - Pressure Method (JTCP)2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 518: Unit Weight - PCC (JTCP)2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 521.2: Compressive Strength - PCC (ASTM C39 / C1231)2026-02-192026-05-20ActiveNicholas HallYes(not set)
CT 539: Sampling Fresh Concrete (JTCP)2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 540: Making Cylinders - PCC (JTCP)2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 556: Slump - PCC (JTCP)2026-02-192026-05-20ActiveNicholas HallNo(not set)
CT 557: Temperature - PCC (JTCP)2026-02-192026-05-20ActiveNicholas HallNo(not set)

AASHTO/ASTM Proficiencies

Test MethodObtained DateExpiration DateStatusIA ResponsibleTechnician Certified?Comments
No results found.

Technicians in the Lab

Technician Summary

Total 1 item.
First NameLast NameActions
StephenJames View

Technician Details

Details for Stephen James

First NameStephen
Last NameJames
StatusActive
Total 35 items.
Certified California Tests(CT)
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
CT 105: Calculations - Gradings (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 125 AGG: Sampling - AGGREGATES (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 125 CEM: Sampling - CEM2018-03-132020-03-13ExpiredDarla GhidinelliNo
CT 125 GEN: Sampling - GENERAL2018-03-132020-03-13ExpiredDarla GhidinelliYes
CT 125 HMA: Sampling - HMA (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaYes
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 204: LL, PL, PI2026-02-192027-02-19ActiveNicholas HallYes
CT 205: Percent Crushed Particles (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 206: SpG & Absorption - Coarse Aggregates2026-02-192028-02-19ActiveNicholas HallYes
CT 207: SpG & Absorption - Fine Aggregates2026-02-192028-02-19ActiveNicholas HallYes
CT 212: Unit Weight of Aggregates2026-02-192028-02-19ActiveNicholas HallYes
CT 216: Relative Compaction - Soils and Aggregates (JTCP)2024-06-142027-06-14ActiveBrian EllisNo
CT 217: Sand Equivalent (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 226: Moisture Content - Soils and Aggregates (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 227: Cleanness Value (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 229: Durability (JTCP)2024-06-142027-06-14ActiveBrian EllisYes
CT 231: Relative Compaction - Nuclear Gage2020-02-272021-02-27ExpiredLoren LeeNo
CT 235: Flat and Elongated Particles2026-02-192028-02-19ActiveNicholas HallYes
CT 308: Bulk SpG and Density - HMA2016-03-172018-03-17ExpiredLoren LeeNo
CT 309: Max SpG and Density - HMA2016-03-172018-03-17ExpiredLoren LeeNo
CT 370: Moisture Content by Microwave2016-03-172018-03-17ExpiredLoren LeeNo
CT 375: AC Density by Nuclear Gage2020-02-272021-02-27ExpiredLoren LeeNo
CT 382: AC Content by Ignition Oven2016-03-172018-03-17ExpiredLoren LeeNo
CT 504: Air Content of PCC - Pressure Method (JTCP)2020-01-312025-01-31ExpiredJackie TreatYes
CT 518: Unit Weight - PCC (JTCP)2020-01-312025-01-31ExpiredJackie TreatYes
CT 521.2: Compressive Strength - PCC (ASTM C39 / C1231)2026-02-192028-02-19ActiveNicholas HallYes
CT 521.1: Compressive Strength - PCC (ASTM C39 / C617)2020-02-272021-02-27ExpiredDarla GhidinelliNo
CT 533: Ball Penetration - PCC2018-03-132020-03-13ExpiredDarla GhidinelliNo
CT 539: Sampling Fresh Concrete (JTCP)2020-01-312025-01-31ExpiredJackie TreatYes
CT 540: Making Cylinders - PCC (JTCP)2020-01-312025-01-31ExpiredJackie TreatYes
CT 543: Air Content of PCC - Volumetric Method (JTCP)2020-01-312025-01-31ExpiredJackie TreatNo
CT 547: Bridge Profilograph2020-02-272021-02-27ExpiredLoren LeeNo
CT 556: Slump - PCC (JTCP)2020-01-312025-01-31ExpiredJackie TreatYes
CT 557: Temperature - PCC (JTCP)2020-01-312025-01-31ExpiredJackie TreatYes
Total 14 items.
AASHTO/ASTM Proficiencies
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
AASHTO T11: Sieve Analysis (Washing) - Fine Aggregates (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO T27: Sieve Analysis - Fine and Coarse Aggregates (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO R47: Reducing Samples of HMA (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO R76: Reducing Samples of Agg (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO T166: Bulk SpG of Compacted HMA - SSD (JTCP)2019-02-072022-02-07ExpiredRichard HibbardNo
AASHTO T176: Sand Equivalent (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO T209: Max SpG and Density - HMA (JTCP)2019-02-072022-02-07ExpiredRichard HibbardNo
AASHTO T248: Reducing Samples of Agg. (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO T255: Evaporable Moisture Content (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO T269: Percent Air Voids - HMA (JTCP)2019-02-072022-02-07ExpiredRichard HibbardNo
AASHTO T275: Bulk SpG - HMA (JTCP)2019-02-072022-02-07ExpiredRichard HibbardNo
AASHTO T308: AC Content (Ignition Oven) - HMA (JTCP)2019-02-072022-02-07ExpiredRichard HibbardNo
AASHTO T329: Moisture Content (Oven Method) - HMA (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo
AASHTO T335: Percentage of Fracture (JTCP)2018-06-152021-06-15ExpiredBiplab BhattacharyaNo