Refusing on notice alone
Notice logs, submission dates, change records and responses may help explain how a time request was administered. Their practical significance depends on the project history, contract requirements and available evidence.
General contractors, subcontractors and construction managers

For Developers, Owners & Public Entities
A time-request review may consider notice records, reported events, completion effects, concurrent delay on the critical path and supporting submissions. The scope and sequence depend on the project facts, records and contract administration. How concurrent delay is treated depends on the contract and applicable law, which are for counsel and the tribunal. That delays were concurrent on the critical path does not, by itself, resolve questions of entitlement or apportionment.
A time-request review may consider event timing, completion effects, float, concurrent delay on the critical path and supporting information, together with notices, submissions and responses in the contract-administration record.
Contemporaneous records and later information may each contribute to an assessment. Their source, timing, consistency and limitations affect their interpretation in the circumstances.
Assessments are also worth writing to be read by a third party later. Reasons given plainly, with the evidence identified and the analysis explained, are far more useful than a bare refusal, both because they are more likely to resolve the matter and because they will be read closely if it is not resolved.

Possible assignment considerations
What do the request, event history, administrative records and schedule evidence each show?
Test the account against documents made at the time, including whether any required notice was given.
Examine the activity's effect on the critical path, including any float it consumed, with the schedule, assumptions and time perspective stated.
Set out the assessment, the evidence relied on and the analysis, in terms a third party could follow.
Considerations and limitations
Notice logs, submission dates, change records and responses may help explain how a time request was administered. Their practical significance depends on the project history, contract requirements and available evidence.
Granting or refusing on the character of the event without testing whether completion actually moved.
A response without reasons gives the contractor and the project record little to work with; the review states what was examined and why.
Request for Extension of Time Analysis
Also in this practice