RE: New drill or Drop article.30 Oct 2019 07:43
This is what the EA did say in response to the planning application.
"The Environment Agency (EA) has assessed the application and raises no objection to the proposal for production stage, subject to a condition requiring surface water management scheme.
The have commented that the applicant will require an environmental permit for the site.
The EA advise that they will comment on the technical detail once the permit application is made.
The permit application will need cover the site drainage, drilling muds and chemical use, waste management, and Control of Major Accident Hazards (COMAH). The EA further advised that the have no objection in principle to the applicant’s proposal for re-injection of produced water and site surface water back into the Portland Formation provided it is for production support.
An environmental permit application for re-injection will be required and supported by appropriate site specific conceptual models, hydrogeological risk assessment of risks to groundwater, and details for proposed mitigation measures.
The permit application will also need to provide detail for groundwater monitoring of any aquifer units in the first 400m below ground level which, in this case, will include monitoring the Tunbridge Well Sand and Ashdown secondary aquifers."
See note 24 from the coditions.
"Surface water management
24. Prior to the commencement of the development hereby permitted details of the design of a surface water drainage scheme shall be submitted to and approved in writing by the County Planning Authority. The design must satisfy the SuDS Hierarchy and be compliant with the national Non-Statutory Technical Standards for SuDS, NPPF and Ministerial Statement on SuDS. The required drainage details shall include:
a) Evidence that the proposed solution will effectively manage the 1 in 30 & 1 in 100 (+10% allowance for climate change) storm events, during all stages of the development (Pre, Post and during), associated discharge rates and storage volumes shall be provided using a maximum discharge rate of 4.2 l/s.
b) Detailed drainage design drawings and calculations to include: a finalised drainage layout detailing the location of drainage elements, pipe diameters, levels, and long and cross sections of each element including details of any flow restrictions and maintenance/risk reducing features including the proposed HDPE membrane to be incorporated into the construction of the well site (silt traps, inspection chambers etc.).
c) Details of how the drainage system will be protected during construction and how runoff (including any pollutants) from the development site will be managed before the drainage system is operational.
d) Details of drainage management responsibilities and maintenance regimes for the drainage system.
e) A plan showing exceedance flows (i.e. during rainfall greater than design events or during blockage) and how property on and off site will be protected."
All pretty clear and si
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