Registers refreshed 2026-11-08.See refresh dates
United States

Terra Development Services, Inc. dba Western Pacific Engineering & Survey

Moses Lake, WA, United States

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A2LA 4142.01ISO/IEC 17025Register refreshed 2026-11-06
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Accredited standards
27
A2LA certificate
1
Sites in our directory
3
A2LA accredited scope

What this lab is accredited for

Our reading of the A2LA scope: each standard once, with its official name where we have checked it.

Only this lab. Searches the 27 standard numbers and the 0 official names we hold. When no standard matches, it searches the method text of every scope line.

ASTM27
ASTM C31
ASTM C39
ASTM C117
ASTM C127
ASTM C128
ASTM C136
ASTM C138
ASTM C143
ASTM C172
ASTM C192
ASTM C231
ASTM C566
Show all 27
ASTM C702
ASTM C1064
ASTM C1231
ASTM D75
ASTM D698
ASTM D1140
ASTM D1557
ASTM D2216
ASTM D2419
ASTM D4318
ASTM D4643
ASTM D5821
ASTM D6913
ASTM D7928
ASTM D69381

Read from the A2LA scope document we downloaded on 2026-03-14. Register refreshed 2026-11-06.

Scope as published by A2LA

3 lines
A2LA

ISO/IEC 17025

Active

4142.01

The scope document we hold says it is valid until 2026-12-31.

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Accredited scope, certificate 4142.01

LineMethodMatrixRange
1ASTM: C1077; D3740; E329; ASTM C117; ASTM C127; ASTM C128; ASTM C136/C136M; ASTM C566; ASTM C702/C702M; ASTM D75/D75M1; ASTM D2419; ASTM D5821; ASTM C31/C31M1; ASTM C39/C39MConcrete-
2ASTM C138/C138M1; ASTM C143/C143M1; ASTM C172/C172M1; ASTM C192/C192M; ASTM C231/C231M1; ASTM C1064/C1064M1; ASTM C1231/C1231M; ASTM D698; ASTM D1140; ASTM D1557; ASTM D2216; ASTM D4318; ASTM D4643; ASTM D6913; ASTM D69381; ASTM D7928Concrete-
3

Extracted from the scope document; tables may not line up. View scope for the original.

For the tests to which this accreditation applies, please refer to the laboratory’s Construction Materials Testing Scope of Accreditation. Accredited Laboratory A2LA has accredited TERRA DEVELOPMENT SERVICES, INC. DBA WESTERN PACIFIC ENGINEERING & SURVEY Moses Lake, WA for technical competence in the field of Construction Materials Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017). Presented this 4th day of December 2024. _______________________ Mr. Trace McInturff, Vice President, Accreditation Services For the Accreditation Council Certificate Number 4142.01 Valid to December 31, 2026

Ranges are reproduced from the accredited scope document as published, and only where we found that range printed in the document for the line. Otherwise the cell reads “See scope document”. An absent range means the register did not state one. Line numbers are ours, for cross-reference; they follow the order of the scope document.

Other Locations

2 other sites in this organization

Suite A Moses Lake, WA, US
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