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South Australia’s Environment Protection Authority Community Wastewater Management Systems Friday 23rd August 2019. Updated Septage Management Guideline. What is septage ?. The product of periodic desludging of a septic tank
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South Australia’s Environment Protection AuthorityCommunity Wastewater Management SystemsFriday 23rd August 2019
What is septage? • The product of periodic desludging of a septic tank • Primarily septic tank sludge (semi-solid), but may include septic tank effluent (liquid) mixed in when desludging a septic tank
What is found in septage? • Scum – floating fats, oil and grease and any solid waste • Septic tank sludge – solids collect at the bottom of the tank and where most of the bacteria involved in the breakdown of biodegradable material in the absence of oxygen • Nutrients – Nitrogen, ammonium, phosphorus, potassium, sodium
What’s in the new guideline? • Updated terminology • Clarification of Land-owner and Waste Transporter mandatory obligations • Reflects changes to Schedule 1 of the Environment Protection Act 1993 • Will link with new conditions for Waste Transporters
Waste management hierarchy • Management of septage must be consistent with the waste management hierarchy Most Preferable AVOID REDUCE REUSE RECYCLE RECOVER TREAT DISPOSE Least Preferable
Septage uses *Councils should ensure that this is reflected in any contracting arrangements *Similar requirements for wastewater treatment plant sludge Most Preferable AVOID REDUCE REUSE RECYCLE RECOVER TREAT DISPOSE Least Preferable { Where reasonably practicable, septage must be taken to a facility licensed to receive septage(Treat, Recover, Recycle, Reuse) Septage may be used as a soil conditioner (excluding horticulture for food production) only if for beneficial reuse in accordance with EPA guidelines (Dispose, Reuse)
New EPA requirements • Licensed Waste Transporters • Desludging of septic tanks and transporting that waste for fee or reward requires an EPA licence • Land-owners • The disposal of human wastewater or sewage to land in a manner approved by the Authority is a ‘prescribed approved activity’ that does not require a licence • Record keeping (compulsory for Licensed Waste Transporters)
Septage “musts” • Take septage to a licensed facility, where reasonably practicable • Apply to land only if for beneficial reuse (i.e. in accordance with guideline) • Keep sludge from commercial or industrial sources separate • Confirm consent between licensed Waste Transporter and Land-owner • Fence to prevent access by the public • Follow Land Selection Criteria and Septage Application (in guideline) and “must nots”… • Do not apply septage to land • where it may enter waters, or pool, water log or runoff • used for horticulture for food production or home gardens • causing off-site odour impacts • within 400 m of any dwelling on neighbouring properties
Application rate • Septagemust not be applied to land at a rate greater than 128 kL per hectare for each application Mark or peg applications
EPA Guidelines and Documents Available online: www.epa.sa.gov.au 8204 2004 Also call for incident reporting S.83(1) of the Act: Must notify of an incident causing or threatening environmental harm. Must notify of site contamination of underground water. Offence to contravene this section of the Act.