Lab details for Butte County

Basic Information

Lab NameButte County
Manager NameTodd Estes
Lab Emailtestes@buttecounty.net
Lab Telephone530-538-7681
Lab Fax530-538-7171
Lab Full Address11 County Center Drive, Oroville, CA 95965
Zip95965
Lab TypeLocal Agency
District3

RSP Information

11 County Center Drive, Oroville, CA 95965

Test Methods

California Test (CT) Accreditations

Total 23 items.
Test MethodObtained DateExpiration DateStatusIA ResponsibleTechnician Certified?
CT 105: Calculations - Gradings (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 125 AGG: Sampling - AGGREGATES (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 125 GEN: Sampling - GENERAL2023-04-262024-04-26ActiveDarrell ValasekYes
CT 125 HMA: Sampling - HMA (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 205: Percent Crushed Particles (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 216: Relative Compaction - Soils and Aggregates (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 217: Sand Equivalent (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 226: Moisture Content - Soils and Aggregates (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 227: Cleanness Value (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 229: Durability (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 231: Relative Compaction - Nuclear Gage2023-04-262024-04-26ActiveDarrell ValasekYes
CT 235: Flat and Elongated Particles2023-04-262024-04-26ActiveDarrell ValasekYes
CT 306: Reducing Samples of Asphalt Mixtures (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 504: Air Content of PCC - Pressure Method (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 518: Unit Weight - PCC (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 533: Ball Penetration - PCC2021-04-152022-04-15ExpiredJackie TreatNo
CT 539: Sampling Fresh Concrete (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 540: Making Cylinders - PCC (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 543: Air Content of PCC - Volumetric Method (JTCP)2021-04-152022-04-15ExpiredJackie TreatYes
CT 556: Slump - PCC (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes
CT 557: Temperature - PCC (JTCP)2023-04-262024-04-26ActiveDarrell ValasekYes

AASHTO/ASTM Proficiencies

Technicians in the Lab

Technician Summary

Total 4 items.
First NameLast NameActions
ToddEstes View
JoshuaWorkman View
MichaelHovey View
DustinSparks View

Technician Details

Details for Todd Estes

First NameTodd
Last NameEstes
StatusActive
Total 35 items.
Certified California Tests(CT)
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
CT 105: Calculations - Gradings (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
CT 125 AGG: Sampling - AGGREGATES (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
CT 125 BIT: Sampling - BITUMINOUS2024-03-142027-03-14ActiveDarrell ValasekNo
CT 125 GEN: Sampling - GENERAL2024-03-142027-03-14ActiveDarrell ValasekYes
CT 125 HMA: Sampling - HMA (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2021-05-052024-05-05ActiveSoroosh AmelianYes
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2021-05-052024-05-05ActiveSoroosh AmelianYes
CT 204: LL, PL, PI2024-03-142026-03-14ActiveDarrell ValasekNo
CT 205: Percent Crushed Particles (JTCP)2021-05-052024-05-05ActiveSoroosh AmelianYes
CT 206: SpG & Absorption - Coarse Aggregates2024-03-142026-03-14ActiveDarrell ValasekNo
CT 207: SpG & Absorption - Fine Aggregates2024-03-142026-03-14ActiveDarrell ValasekNo
CT 211: LA Rattler2024-03-142026-03-14ActiveDarrell ValasekNo
CT 216: Relative Compaction - Soils and Aggregates (JTCP)2021-05-052024-05-05ActiveSoroosh AmelianYes
CT 217: Sand Equivalent (JTCP)2021-05-052024-05-05ActiveSoroosh AmelianYes
CT 226: Moisture Content - Soils and Aggregates (JTCP)2021-05-052024-05-05ActiveSoroosh AmelianYes
CT 227: Cleanness Value (JTCP)2021-05-052024-05-05ActiveDalton LaBoskeyYes
CT 231: Relative Compaction - Nuclear Gage2023-04-262025-04-26ActiveDarrell ValasekYes
CT 235: Flat and Elongated Particles2024-03-142026-03-14ActiveDarrell ValasekYes
CT 301: "R" Value2024-03-142026-03-14ActiveDarrell ValasekNo
CT 306: Reducing Samples of Asphalt Mixtures (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
CT 308: Bulk SpG and Density - HMA2024-03-142026-03-14ActiveDarrell ValasekNo
CT 309: Max SpG and Density - HMA2024-03-142026-03-14ActiveDarrell ValasekNo
CT 375: AC Density by Nuclear Gage2024-03-142026-03-14ActiveDarrell ValasekNo
CT 382: AC Content by Ignition Oven2024-03-142026-03-14ActiveDarrell ValasekNo
CT 384: Combined Grade for HMA using up to 25% RAP2024-03-142026-03-14ActiveDarrell ValasekNo
CT 504: Air Content of PCC - Pressure Method (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
CT 518: Unit Weight - PCC (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
CT 521.2: Compressive Strength - PCC (ASTM C39 / C1231)2024-03-142026-03-14ActiveDarrell ValasekNo
CT 521.1: Compressive Strength - PCC (ASTM C39 / C617)2024-03-142026-03-14ActiveDarrell ValasekNo
CT 533: Ball Penetration - PCC2016-04-182018-04-18ExpiredIgnocencio HerreraYes
CT 539: Sampling Fresh Concrete (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
CT 540: Making Cylinders - PCC (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
CT 543: Air Content of PCC - Volumetric Method (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
CT 556: Slump - PCC (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
CT 557: Temperature - PCC (JTCP)2018-04-142023-04-14ExpiredJackie TreatYes
Total 13 items.
AASHTO/ASTM Proficiencies
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
AASHTO T11: Sieve Analysis (Washing) - Fine Aggregates (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO T27: Sieve Analysis - Fine and Coarse Aggregates (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO R47: Reducing Samples of HMA (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO R76: Reducing Samples of Agg (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO T84: SpG & Absorption - Fine Aggregates2024-03-142026-03-14ActiveDarrell ValasekNo
AASHTO T85: SpG & Absorption - Coarse Aggregates2024-03-142026-03-14ActiveDarrell ValasekNo
AASHTO T96: L.A. Rattler2024-03-142026-03-14ActiveDarrell ValasekNo
AASHTO T176: Sand Equivalent (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO T255: Evaporable Moisture Content (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO T312: Gyratory Compactor2024-03-142026-03-14ActiveDarrell ValasekNo
AASHTO T329: Moisture Content (Oven Method) - HMA (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO T335: Percentage of Fracture (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
ASTM D4791: Flat and Elongated Particles2024-03-142026-03-14ActiveDarrell ValasekYes

Details for Joshua Workman

First NameJoshua
Last NameWorkman
StatusActive
Total 21 items.
Certified California Tests(CT)
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
CT 105: Calculations - Gradings (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
CT 125 AGG: Sampling - AGGREGATES (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
CT 125 HMA: Sampling - HMA (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 205: Percent Crushed Particles (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 216: Relative Compaction - Soils and Aggregates (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 217: Sand Equivalent (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 226: Moisture Content - Soils and Aggregates (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 227: Cleanness Value (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 229: Durability (JTCP)2023-02-032026-02-03ActiveGabriela LopezYes
CT 231: Relative Compaction - Nuclear Gage2023-04-262025-04-26ActiveDarrell ValasekYes
CT 235: Flat and Elongated Particles2023-04-262025-04-26ActiveDarrell ValasekYes
CT 306: Reducing Samples of Asphalt Mixtures (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
CT 504: Air Content of PCC - Pressure Method (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
CT 518: Unit Weight - PCC (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
CT 539: Sampling Fresh Concrete (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
CT 540: Making Cylinders - PCC (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
CT 543: Air Content of PCC - Volumetric Method (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
CT 556: Slump - PCC (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
CT 557: Temperature - PCC (JTCP)2020-01-252025-01-25ActiveJackie TreatYes
Total 9 items.
AASHTO/ASTM Proficiencies
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
AASHTO T11: Sieve Analysis (Washing) - Fine Aggregates (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
AASHTO T27: Sieve Analysis - Fine and Coarse Aggregates (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
AASHTO R47: Reducing Samples of HMA (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
AASHTO R76: Reducing Samples of Agg (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
AASHTO T176: Sand Equivalent (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
AASHTO T255: Evaporable Moisture Content (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
AASHTO T329: Moisture Content (Oven Method) - HMA (JTCP)2021-04-232024-04-23ActiveSarbjit GrewalYes
AASHTO T335: Percentage of Fracture (JTCP)2024-03-012027-03-01ActiveFirooz Ahmad HosainyYes
ASTM D4791: Flat and Elongated Particles2023-04-262025-04-26ActiveDarrell ValasekYes

Details for Michael Hovey

First NameMichael
Last NameHovey
StatusActive
Total 22 items.
Certified California Tests(CT)
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
CT 105: Calculations - Gradings (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 125 AGG: Sampling - AGGREGATES (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 125 HMA: Sampling - HMA (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 205: Percent Crushed Particles (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 216: Relative Compaction - Soils and Aggregates (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 217: Sand Equivalent (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 226: Moisture Content - Soils and Aggregates (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 227: Cleanness Value (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 229: Durability (JTCP)2023-02-032026-02-03ActiveAvinash RallaYes
CT 231: Relative Compaction - Nuclear Gage2023-04-262024-04-26ActiveDarrell ValasekYes
CT 235: Flat and Elongated Particles2023-04-262024-04-26ActiveDarrell ValasekYes
CT 306: Reducing Samples of Asphalt Mixtures (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
CT 504: Air Content of PCC - Pressure Method (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 518: Unit Weight - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 523.1 Section B.1 & B.2: Flexural Strength (Field Fabrication) (JTCP)2023-06-232028-06-23ActiveAvinash RallaNo
CT 539: Sampling Fresh Concrete (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 540: Making Cylinders - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 543: Air Content of PCC - Volumetric Method (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 556: Slump - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 557: Temperature - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
Total 9 items.
AASHTO/ASTM Proficiencies
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
AASHTO T11: Sieve Analysis (Washing) - Fine Aggregates (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO T27: Sieve Analysis - Fine and Coarse Aggregates (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO R47: Reducing Samples of HMA (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO R76: Reducing Samples of Agg (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO T176: Sand Equivalent (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO T255: Evaporable Moisture Content (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO T329: Moisture Content (Oven Method) - HMA (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
AASHTO T335: Percentage of Fracture (JTCP)2022-11-042025-11-04ActiveDalton LaBoskeyYes
ASTM D4791: Flat and Elongated Particles2023-05-032024-05-03ActiveDarrell ValasekYes

Details for Dustin Sparks

First NameDustin
Last NameSparks
StatusActive
Total 21 items.
Certified California Tests(CT)
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
CT 105: Calculations - Gradings (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
CT 125 AGG: Sampling - AGGREGATES (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
CT 125 HMA: Sampling - HMA (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
CT 201: Sample Preparation - Soil and Aggregates (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 202: Sieve analysis - Fine and Coarse Aggregates (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 205: Percent Crushed Particles (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 216: Relative Compaction - Soils and Aggregates (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 217: Sand Equivalent (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 226: Moisture Content - Soils and Aggregates (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 227: Cleanness Value (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 229: Durability (JTCP)2023-05-122026-05-12ActiveDavid MedinaYes
CT 231: Relative Compaction - Nuclear Gage2023-04-262024-04-26ActiveDarrell ValasekYes
CT 306: Reducing Samples of Asphalt Mixtures (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
CT 504: Air Content of PCC - Pressure Method (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 518: Unit Weight - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 523.1 Section B.1 & B.2: Flexural Strength (Field Fabrication) (JTCP)2023-06-232028-06-23ActiveAvinash RallaNo
CT 539: Sampling Fresh Concrete (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 540: Making Cylinders - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 543: Air Content of PCC - Volumetric Method (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 556: Slump - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
CT 557: Temperature - PCC (JTCP)2023-06-232028-06-23ActiveAvinash RallaYes
Total 9 items.
AASHTO/ASTM Proficiencies
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab Scope?
AASHTO T11: Sieve Analysis (Washing) - Fine Aggregates (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
AASHTO T27: Sieve Analysis - Fine and Coarse Aggregates (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
AASHTO R47: Reducing Samples of HMA (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
AASHTO R76: Reducing Samples of Agg (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
AASHTO T176: Sand Equivalent (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
AASHTO T255: Evaporable Moisture Content (JTCP)2023-04-212026-04-21ActiveDarrell ValasekYes
AASHTO T329: Moisture Content (Oven Method) - HMA (JTCP)2023-04-212026-04-21ActiveDarrell ValasekYes
AASHTO T335: Percentage of Fracture (JTCP)2023-04-212026-04-21ActiveGabriela LopezYes
ASTM D4791: Flat and Elongated Particles2023-05-032024-05-03ActiveDarrell ValasekYes