# PDF480-75-400

**Citation:** WAC 480-75-400  
**Type / status:** regulation / current  
**Agency:** Washington Utilities and Transportation Commission  
**Effective:** 2008-06-30  
**Published:** Not stated

Backfill and bed requirements.

## Document text

Backfill and bed requirements.

## Provenance

- Official: Yes
- Source: <https://app.leg.wa.gov/WAC/default.aspx?cite=480-75-400>
- Source ID: `wa-wac`
- SHA-256: `9f89bba316c4e93b797c409eaa8e2ac0fdf379c36bae25d0d84a3c12ad79b123`
- Retrieved: 2026-08-11T02:02:35.370Z
- Exported: 2026-08-23T14:48:41.712Z
- Document slug: `wac-480-75-400`

### Source metadata

```json
{
  "jurisdiction": "US-WA",
  "chapter": "480-75",
  "section": "480-75-400",
  "sourceNote": "[Statutory Authority: RCW 80.01.040, 80.04.060, 81.88.040. WSR 08-12-045 (Docket PL-070974, General Order R-548), § 480-75-400, filed 5/30/08, effective 6/30/08. Statutory Authority: RCW 80.01.040 and 80.04.160. WSR 02-18-032 (Docket No. TO-000712, General Order No. R-500), § 480-75-400, filed 8/26/02, effective 9/26/02.]",
  "officialPdfUrl": "https://app.leg.wa.gov/WAC/default.aspx?cite=480-75-400&pdf=true",
  "filingHistoryUrl": "https://app.leg.wa.gov/wac/registerfiling.aspx?cite=480-75-400",
  "pipelineScope": "hazardous-liquid",
  "region": "WA"
}
```