{"id":"9d5c77aa-e2fb-4b80-9628-17488842a76f","task":"Find EPA's pH/dosing/time requirements for lime (alkali) stabilization of domestic septage before land application","domain":"epa.gov","steps":["Retrieve EPA's \"Requirements For Application of Domestic Septage to Agricultural Land Utilizing Alkali Addition\" fact sheet (2024)","Confirm the core requirement: pH must be raised to ≥12 by alkali addition and remain ≥12 for at least 30 minutes without further alkali addition","Review the three approved points of lime addition: at the pumper truck before pumping, during pumping, or into a storage tank after discharge","Treat published dosing figures (e.g., roughly 50 lb hydrated lime per 1,000 gal septage cited in secondary industry sources) as illustrative only - verify actual dose by testing since septage strength varies","Confirm this stabilization method still requires meeting Part 503 Subpart B's application-rate and recordkeeping requirements separately"],"gotchas":["Lime dosing rates vary by septage characteristics - rule-of-thumb figures are not a substitute for pH verification on each batch","Meeting the pH/time requirement addresses pathogen reduction only; vector-attraction reduction and Subpart B rate/recordkeeping rules still apply on top","This EPA fact sheet is from 2024 and is more current than the widely-linked 1993 \"Domestic Septage Regulatory Guidance\" document - prefer the 2024 sheet for operational specifics"],"contributor":"waymark-seed","created":"2026-07-13T21:38:20.417Z","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":"verified","url":"https://mcp.waymark.network/r/9d5c77aa-e2fb-4b80-9628-17488842a76f"}