We support the concept statement acknowledging a contaminated land study will be required due to the previous uses of the site.

However the document advises that there maybe constraints in the foul water infrastructure and therefore a septic tank maybe a more appropriate way to dispose of foul waters. According to our records the nearest main sewer is some distance from the site so provided this is correct then it is appropriate to consider private means of disposal. However you should be aware that a septic tank and soakaway may not be suitable on this site as a soakaway could potentially mobilise contaminants in the ground. If this option for foul water disposal was chosen it would need to be shown that contaminants are not present and will not be mobilised. Further percolation tests would need to be conducted to ensure that conditions are suitable for a discharge to ground.

An alternative option may be to install a package sewage treatment plant and discharge treated sewage effluent into an adjacent watercourse. If this option is progressed then suitable access will be required to ensure there is adequate room for tanker access required to de-sludge.

To address this potential issue you may wish to consider making some changes to the wording of this policy as a minor amendment.

Further information can be found at http://publications.environment-agency.gov.uk/pdf/PMHO0706BJGL-E-E.pdf?lang=_e, http://www.environment-agency.gov.uk/static/documents/Business/EMS_for_discharges_of_secondary_treated_sewage_to_surfacewaters.doc and http://www.environment-agency.gov.uk/business/topics/water/117479.aspx.

You should also note that the watercourses running through the site are classed as 'ordinary watercourses' and the applicant maybe required to obtain a Flood Defence Consent from Essex County Council for works by or in the river.