This consultation closes at 11:59 p.m. on:
November 13, 2026
Proposal summary
OPSS 1002, OPSS 1003, OPSS 1004, and OPSS 1010 are updated to clarify material requirements, align specifications with applicable test methods and practices, and improve contract administration. This will support consistent material acceptance, quality assurance, and project delivery across the province.
Proposal details
OPSS 1002 Aggregates - Concrete
•Update LS-613 Insoluble Residue (IR) requirements for aggregates used in concrete pavement and exposed concrete bridge deck driving surfaces.
•Permit the use of mathematically combined gradations for gradation acceptance.
OPSS 1003 Aggregates – Hot Mix Asphalt
•Update LS-613 and LS-609 requirements for DSM aggregates to improve acceptance requirements.
OPSS 1004 Aggregates – Miscellaneous
•Add CASL qualification as a prerequisite for waiving certain QA physical property tests for gabion stone, rip-rap, and rock protection materials.
•Revise the 19 mm sieve gradation requirement for 19 mm clear stone.
•Update winter sand gradation requirements and administration.
OPSS 1010 – Aggregates – Base, Subbase, Select Subgrade, and Backfill Material
•Add definitions and administrative requirements for loose reinforcing materials.
•Introduce an acceptance limit for mica content.
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