Harper Lane Quarry
Inert
Harper Lane Quarry is a historic (closed) landfill site recorded by the Environment Agency near Radlett, Hertfordshire. It received inert waste between 1975 and 1991, covering about 11.26 hectares. Reference EAHLD12319, October 2025 data revision.
Full record
| EA reference | EAHLD12319 |
|---|---|
| Site name | Harper Lane Quarry |
| Address | Harper Lane, Near Radlett, Hertfordshire |
| Site operator | Not recorded |
| Licence holder | Redland Aggregates |
| Licence issued | 9 July 1990 |
| Licence surrendered | 19 March 1993 |
| First waste input | 17 February 1975 |
| Last waste input | 31 October 1991 |
| Area | 11.26 ha |
| Gas control | Not recorded |
| Leachate containment | Not recorded |
| Licensed site | Yes |
| EA area | North East TH |
| Grid reference | 515900, 202100 |
Source: Environment Agency Historic Landfill Sites dataset, October 2025 revision.
Boundary map
What these waste types mean
- Inert:
- builder's rubble, subsoil, concrete, brick. Doesn't decompose or generate gas; the lowest-concern category.
Other historic landfill sites nearby
- Old ParkburyHouseholdCommercialInert
- Harper Lane QuarryIndustrialCommercial
- Harper Lane QuarryIndustrialCommercialInert
- Harper Lane QuarryIndustrialCommercialInert
- Lafarge Harper Lane, RadlettWaste types not recorded
- Riverside FarmInert
What this data does — and doesn't — cover
- Licensed-era records only. Waste licensing began in 1974. Older tips — especially small pre-war ones — are incompletely recorded, so absence from this data does not mean no landfill ever existed here.
- Not the contaminated-land register. Councils hold a separate register of land determined as contaminated. A historic landfill entry is not a contamination determination, and vice versa.
- Boundaries are indicative. Digitised at 1:10,000 scale; some are buffers around a point rather than surveyed edges.
- Not a substitute for a formal environmental search. If you're buying, your conveyancer's environmental search checks this and several other sources.
EA Historic Landfill dataset, October 2025 revision. More on the methodology page.