DIME - Test Summary

Summary for Test 2026-05-04-50-5

Test performed: ASTM D2487-17

Project Identifiers	Project ID: 1002031 DEA: 024K0504 EFIS: 0226000137
DIST-CO-RTE-PM	02-SHA-89-29.2/29.4
Award Date	Not set
Closeout Date	Not set
Work Description	Excavate and replace unstable subgrade, install geotextile fabric, and reconstruct the structural pavement section.
Location Description	IN SHASTA COUNTY ABOUT 7 MILES NORTH OF FOUR CORNERS FROM LAKE BRITTON BRIDGE TO 0.2 MILE NORTH OF LAKE BRITTON BRIDGE.
QA Service Level	1 (Verified on 04/10/2026)

Sample Taken Date	05/04/2026	Sample Unique Key	50
Will the laboratory/organization for which you are a member perform testing on this material sample?	Yes	Date that the sample was received by the laboratory/organization performing the testing	05/04/2026
Sample type	Acceptance	A brief description of the sample	3 Bags Subgrade
The quantity of what the sample constitutes	Subgrade	From where was the sample collected	Source
First name of sampler or witnessed by	Dan	Last name of sampler or witnessed by	Frost
Title of sampler	TET	Telephone number of sampler
Laboratory sample identification	D80185	Linked DIME Sample ID
The fabricator/manufacturer/facility name	District 2 Lab	Transportation Laboratory (TL) Number	875926
Inspector Lot Number from the Transportation Laboratory (TL) Form		Structure unique identifier
Structure name		Bid Item	Not set

Material Type	Soil	The fabricator's/manufacturer's product name for the sample
The fabricator/manufacturer designation for the sample		A detailed description of where the material sample was collected	SB Lane N Side of Bridge PM 29.3 SHA-89
Where the material sample would have been placed if not sampled

DIME Sample ID: 2026-05-04-50

DIME Test ID: 2026-05-04-50-5

Testing Lab: CT D02 - Redding Northern Regional Laboratory

Test Method: ASTM D2487-17: Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

Test Release Date: 2026-05-18

Units for Particle Size: millimeters

Input Type: Measured

Tester's full name: Josh Murphy

Date of test: 05/13/2026

Percentage of plus 3-in. (75-mm) material: 100 %

Maximum particle size: 6.3 millimeters

Fines classification: no data

Percent fines: 91 %

Percent sand: 8 %

Percent gravel: 1 %

Liquid limit: 95

Plasticity Index: 0

Is soil fine-grained or coarse-grained?: fine-grained

Fine-grained soil classification: no data

Inorganic clay classification: no data

Inorganic silt classification: no data

Organic fine-grained soil classification: no data

Any descriptors added to fine-grained soil classification?: no data

Coarse-grained soil classification: no data

Particle-size diameter at 10% passing (D10): 0.0075 millimeters

Particle-size diameter at 30% passing (D30): 0.022 millimeters

Particle-size diameter at 60% passing (D60): 0.04 millimeters

Gravel classification: no data

Sand classification: no data

Any descriptors added to coarse-grained soil classification?: no data

Did field sample contain cobbles or boulders?: no data

Coarse-grained soil dual classification: A elastic silt, (MH)

Descriptive information: no data

Coefficient of uniformity (Cu): 5.333

Coefficient of curvature (Cc): 1.613

General comments (publicly viewable) (Max 1000 characters): A elastic silt, (MH)

Test was verified on 5/18/2026 ✔