Clearly describe the work
Specify aggregate composition, pathway cross-section, thickness, grading, compaction, drainage and environmental constraints.
Define performance criteria
Use project-appropriate test methods and acceptance criteria. Do not treat manufacturer marketing claims as independent test results.
Submittals
Request current technical data, installation requirements, safety information, mockup results and maintenance guidance.
Procurement
Review substitution procedures and require demonstrated compatibility with the specified aggregate. Determine delivery needs, construction schedule and packaging before ordering.
Division coordination
Coordinate stabilized aggregate requirements with the project's earthwork, site drainage, landscape finishes and accessibility notes. Identify which contractor is responsible for compacting the base, which applies the treatment and who signs off the substrate at the hold point.
Evaluation of proposed equals
Request comparable product data on chemistry, approved substrate, application rate, cure restrictions, mockups and relevant performance testing. A different binder chemistry is not automatically equal simply because both claim to stabilize gravel.
Closeout deliverables
Require the installer to record weather and product batches for the mockup and production work as appropriate. Supply the owner with maintenance advice, repair techniques and the location of any accepted test sections.
Suggested scope outline
Organize the requirements into general product submittals, approved materials, subgrade and aggregate preparation, treatment execution and acceptance. Coordinate each section with the landscape drawings and grading plans. For a public project, identify who reviews substitutions and whether contractors may propose alternate treatments before bid or only after award.
Mockup approval criteria
Require a sufficiently representative trial section where aggregate appearance, compaction, treatment application and final stability can be observed. Agree on visual comparison, test method, drying conditions and ownership of the acceptance decision before installation. The mockup should not be used as a substitute for project-specific drainage or accessibility design.
Field review before final selection
Tie each required submittal to a real acceptance decision and name who is responsible for reviewing the material before installation.