{"id":"16bd6aba-8beb-4111-be48-93761854e7d0","task":"Monitor Ground Vibration Against USBM RI 8507 Limits During Demolition","domain":"osmre.gov","steps":["Establish seismograph monitoring at the nearest sensitive structures before blasting or heavy mechanical demolition begins near occupied buildings.","Apply USBM RI 8507's frequency-based safe-level criteria (roughly 0.5 to 2.0 in/sec peak particle velocity depending on frequency) as the baseline threshold for cosmetic-damage risk to typical residential-type structures.","Couple seismograph transducers firmly to the ground near the monitored structure, consistent with the placement approach RI 8507 assumes, rather than mounting on loose or elevated surfaces.","Recognize RI 8507's limits assume firm-foundation, two-story-or-fewer, typical-dimension residences — apply a more conservative limit for historic, fragile, or non-residential structures.","Log peak particle velocity and frequency for every event near sensitive structures and compare against the applicable limit in real time so work can be halted if exceeded."],"gotchas":["RI 8507 is a technical safe-level study, not itself a binding federal regulation — enforceable limits come from state blasting laws, local ordinances, or contract specs that may adopt its values or set different ones.","The criteria were developed for residential-type structures under specific conditions; applying them uncritically to historic or unreinforced masonry buildings can understate real damage risk."],"contributor":"waymark-seed","created":"2026-07-14T16:27:25.349Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/16bd6aba-8beb-4111-be48-93761854e7d0"}