FAQs
Briggens Estate
Context and overview
Why do we need a quarry in the first place?
The site contains a high quality mineral resource that can be processed to derive a range of construction aggregates to supply the development sector in the east of the county.
The site at Briggens Estate was assessed by Hertfordshire County Council (the Mineral Planning Authority) as part of a rigorous site selection process that evaluated 18 candidate sites across the county. The Briggens site performed well and has been identified as a Preferred Area in the emerging Replacement Minerals Local Plan (RMLP).
The site benefits from direct access to the A414, which is well placed for moving aggregates sustainably to market.
Site location and operations
Sand and gravel quarries are generally much shallower than hard rock quarries and, importantly, no blasting is required to extract the aggregate. They are usually worked and restored in phases as this minimises the area exposed at any time and limits the time that the land is out of use for other productive purposes.
Sand and gravel are commonly extracted by a mobile excavator and transported to a processing plant using either a conveyor or dump truck, where it is washed to remove fine sand and clay (silt). Sand separated during this process is then dried and stockpiled.
The gravel extracted in this process is passed over a series of screens that sift the material into different sizes. The gravels are then placed into separate stockpiles. The plant site is always in proximity to freshwater and silt lagoons that are created as a source of water to wash the sand and to dispose of the silt. The finished aggregate products are then loaded onto trucks for delivery to customers mainly to be used in the manufacture of ready mixed products.
The site is crossed by three public rights of way, including the Harcamlow Way, a long-distance walking route. The working scheme is designed to keep all rights of way accessible throughout operations wherever possible. One bridleway (Hunsdon 002, the Harcamlow Way) would need to be temporarily diverted during the later phases of extraction in the eastern part of the site (phases 8 and 9). This diversion would last an estimated six months, after which the route would be reinstated to its permanent alignment. Any diversion would be no less accommodating than the existing route.
Consistent with the site-specific requirements of the allocation profile for the site, the scheme illustrated on submitted plans also identifies an upfront commitment to establish a maintain a cycle path that will connect the communities in the new Gilston Garden Villages with the existing residential communities and around Stansted Abbots. This proposal is consistent with wider rights of way strategies advanced by the county and district councils and provides a safe means of walking between the two communities.
As part of the restoration scheme, we will be providing an enhanced network of permissive public access routes across the restored landscape, improving east-west connectivity for walkers and bridleway users, as well as maintained the aforementioned cycle path linking Gilston Garden Villages with the existing communities around Stanstead Abbotts.
Traffic and transport
Environmental impacts and Ecology impacts
A Preliminary Ecological Appraisal (PEA) has been undertaken, which found that the site is predominantly of low to moderate ecological value. It consists mainly of arable land with grassland margins, supplemented by areas of lowland mixed deciduous woodland, hedgerows, ponds, and ditches.
The site has the potential to support a range of species including farmland birds, bats, reptiles, amphibians, badgers, water voles, hazel dormice, and invertebrates. We have refined the scheme over time, which means that none of the woodland compartments within the site are now proposed for removal to help protect local biodiversity.
Detailed follow-up surveys are being undertaken for all relevant species groups, and the working scheme will be designed to retain and buffer important trees, hedgerows, and habitats. Restoration of the site will create new habitats including broadleaf woodland, wetland, neutral grassland, and farmland margins, delivering long-term biodiversity benefits.
Public Amenities
Timings and Next Steps
We are in the early stages of preparing our application, and have just submitted our Scoping Request to Hertfordshire County Council to establish the scope and level of detail we will need to provide as part of our Environmental Assessments.
We will be running a full and extensive public consultation once we have sufficient information following the investigations and studies that we need to complete.
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