DIME - Test Summary

Summary for Test 2025-08-13-78-4

Test performed: CTM 643-April 2020

Project Identifiers	Project ID: 1001282 DEA: 022J8604 EFIS: 0221000142
DIST-CO-RTE-PM	02-SHA-5-61.75/61.75
Award Date	Not set
Closeout Date	Not set
Work Description	Sweetbrier Deck Replacement - Bridge Rehabilitation and Replacement
Location Description	In Shasta County near Castella at Sweetbrier Overcrossing Bridge #06-0115
QA Service Level	1 (Verified on 05/27/2025)

Sample Taken Date	08/13/2025	Sample Unique Key	78
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	08/14/2025
Sample type	Preliminary	A brief description of the sample	Sand, Silt, Rock and Soil
The quantity of what the sample constitutes	Not Provided	From where was the sample collected	Source
First name of sampler or witnessed by	Brian	Last name of sampler or witnessed by	Steiner
Title of sampler	Assistant DME	Telephone number of sampler
Laboratory sample identification	D80002	Linked DIME Sample ID
The fabricator/manufacturer/facility name	Roadside	Transportation Laboratory (TL) Number	858148
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	Shoulder Slope near SHA 5 PM 61.75 at the NB Sweetbrier offramp
Where the material sample would have been placed if not sampled

DIME Sample ID: 2025-08-13-78

DIME Test ID: 2025-08-13-78-4

Testing Lab: CT D02 - Redding Northern Regional Laboratory

Test Method: CTM 643-April 2020: Method for Test for Laboratory Resistivity and pH for Soil and Water

Test Release Date: 2025-09-03

The test method used?: Laboratory Resistivity Test for Soil (pH and Resistivity)

Input Type: Measured

Tester's full name: Josh Murphy

Date of test: 08/21/2025

Minimum soil resistance of the lab measurement: 8800 Ohms

Soil sample temperature: 19.6 C

Soil box constant: 1

pH of soil: 6.27

Minimum soil resistance corrected to 15.5: 9702 Ohm-cm

Minimum soil resistivity at 15.5: 9702 Ohm-cm

General comments (publicly viewable) (Max 1000 characters): pH=6.27, p=9702.Ω∙cm

Test was verified on 9/3/2025 ✔