Land Adjacent to A414
Inert
Land Adjacent to A414 is a historic (closed) landfill site recorded by the Environment Agency near Welwyn Garden City, Hertfordshire. It received inert waste between 1993 and 1994, covering about 12.48 hectares. Reference EAHLD10044, October 2025 data revision.
Full record
| EA reference | EAHLD10044 |
|---|---|
| Site name | Land Adjacent to A414 |
| Address | Mill Green Golf Course, A414 Mill Green, Hatfield, Hertfordshire |
| Site operator | Not recorded |
| Licence holder | Planpact Limited |
| Licence issued | 13 August 1993 |
| Licence surrendered | 13 August 1994 |
| First waste input | 13 August 1993 |
| Last waste input | Not recorded |
| Area | 12.48 ha |
| Gas control | Not recorded |
| Leachate containment | Not recorded |
| Licensed site | Yes |
| EA area | North East TH |
| Grid reference | 525500, 210100 |
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
- The BroadwaterInert
- Coopers TipInert
- Cole GreenSpecialLiquid / sludgeIndustrialHouseholdCommercialInert
- Cole GreenSpecialLiquid / sludgeIndustrialHouseholdCommercialInert
- Cole Green Landfill SiteInert
- Cole GreenWaste types not recorded
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.