section b general attachment b1: agglomeration boundary · 2017-09-14 · ds0667e waterproof...

SECTION B – GENERAL

Attachment B1: Agglomeration Boundary

Attachment B.1: Agglomeration Boundary

Legend5

PrimaryDischarge Point

QWaste WaterTreatment plantIWAgglomerationBoundary

1:2,191

Coordinate System: TM65 Irish GridProjection: Transverse Mercator

0 25 5012.5Meters

E.Laurinaviciute

Q

5

© Ordnance Survey Ireland

±1. No part of this drawing may be reproduced or transmitted in any form or stored in any retrieval system of any nature without the written permission of Irish Water as copyright holder except as agreed for use onthe project for which the document was originally issued.2. Whilst every care has been taken in its compilation, Irish Water gives this information as to the position of its underground network as a general guide only on the strict understanding that it is based on the bestavailable information provided by each Local Authority in Ireland to Irish Water. Irish Water can assume no responsibility for and give no guarantees, undertakings or warranties concerning the accuracy, completeness or up to date nature of the information provided and does not accept any liability whatsoever arising from any errors or omissions.This information should not be relied upon in the event of excavations or any other works being carried out in the vicinity of the Irish Water underground network. The onus is on the parties carrying out excavations or any other works to ensure the exact location of the Irish Water underground network is identified prior to excavations or any other works being carried out. Service connection pipes are not generally shown but their presence should be anticipated.© Copyright Irish WaterReproduced from the Ordnance Survey Of Ireland by Permission of the Government. License No. 3-3-34 Map Template Design: [email protected]

Drawn By:Checked By:Approved By:

Scale:

Drawn DateChecked Date:Approved Date:

@ A3

Agglomeration BoundaryCullyfad - Woodlands Park

V.McArdleV.McArdle

26/04/201726/04/201726/04/2017

Revision No.: 0Appendix No: B.1

© Ordnance Survey Ireland

Woodlands Park WWTPIG 218651E 277270N

Primary Discharge Point (Percolation Area) SW1

IG 218622E 277247N

SECTION B – GENERAL

Attachment B6: Relevant Planning Authority

B.6 Planning Permission for Woodlands Park Residential Development including WWTP & Percolation Area

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SECTION C – INFRASTRUCTURE & OPERATION

Attachment C1: Operational Information Requirements

C.1: Envirocare WWTP Installation and Operational Guidance

Document

Issue Description Date 05 CC634 October 2008

GL0007E High Capacity P-Range

Installation & Operation Guidelines

Envirocare Pollution Control

Unit 1a off Derryboy Road, Carnbane Business Park, Newry. BT35 6QH

Tel: +44 (0)28 3026 4076 Fax: +44 (0) 28 3026 0046

Website: www.envirocare.i.e E-mail: [email protected]

Hig

h C

apac

ity

DS0659E Typical Layout High Capacity P-Range • DS0660E Biological Chamber • DS0661E Primary Settlement Chamber • DS0662E Final Settlement Chamber • DS0663E General Layout High Capacity P-Range • DS0667E Waterproof Connector • DS0734E Desludge Detail • 500192E PPFDS wiring Diagram • 500195E Mains Supply Isolator Panel, Wiring Diagram • DS0868E General Site Layout 1 • DS0869E General Site Layout 2 • DS0870E General Site Layout 3 • DS0871E General Site Layout 4 • DS0872E General Site Layout 5 •

Enclosed Documents

GL0007E – High Capacity P-Range Installation & Operation Guidelines

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HEALTH AND SAFETY

These warnings are provided in the interest of safe ty. You must read them carefully before installing or using the equipment.

It is important that this document is retained with the equipment for future reference. Should the equipment be transferred to a new owner, always ensure that all relevant documents are supplied in order that the new owner can become acquainted with the functioning of the equipment and the relevant warnings.

Installation should only be carried out by a suitably experienced contractor, following the guidelines supplied with the equipment.

We recommend the use of a dust mask and gloves when cutting GRP components.

A qualified electrician should carry out electrical work.

Sewage and sewage effluent can carry micro-organisms harmful to human health. Any person carrying out maintenance on the equipment should wear suitable protective clothing, including gloves. Good hygiene practice should also be observed.

Covers must be kept locked.

Observe all hazard labels and take appropriate action to avoid exposure to the risks indicated.

The correct ongoing maintenance is essential for the proper operation of the equipment. Service contracts are available and recommended. Please contact Tekserv for details of your local service provider.

Should you wish to inspect the operation of the equipment, please observe all necessary precautions, including those listed below, which apply to maintenance procedures.

Ensure that you are familiar with the safe working areas and accesses.

Ensure that the working area is adequately lit.

The power supply to the equipment should be isolated at the main RCD before lifting the blower cover.

Take care to maintain correct posture, particularly w hen lifting. Use appropriate lifting equipment when necessary. Keep proper footing and bala nce at all times. Avoid any sharp edges. Desludging should be carried out by a lic ensed waste disposal contractor holding the relevant permits to transport a nd dispose of sewage sludge. The contractor must refer to the desludge instructions c ontained in these guidelines.


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CONTENTS Page

Health & Safety ........................................................................................................................ 2

Operating Guidelines .............................................................................................................. 3

(i) Engineering & Process ...................................................................................................... 3

(ii) General Maintenance......................................................................................................... 5

(iii.) Desludging ....................................................................................................................... 6

Installation Guidelines .................................................................................................................. 7

(i) Site Planning........................................................................................................................ 7

(ii) Pre-service Agreement Inspection....................................................................................... 10

Electrical Guidelines ..................................................................................................................... 12

(i) General Notes on Outside Electrical Installation ...................................................................... 12

(ii) Power and Pressure Failure Detection System...................................................................... 13

(iii) Blower Isolator Electrical Details ............................................................................................ 14

Operating Guidelines Engineering & Process The sewage treatment systems for 150 – 375 population equivalents are designed to treat domestic sewage to final effluent quality on average of better than 30mg/l suspended solids, 20mg/l biochemical oxygen demand (BOD), 20mg/l Ammonia for the standard treatment system and 10mg/l Ammonia for the high rate treatment system. They will achieve the above when loaded in accordance with the design limits. It is a requirement that treatment systems are operated and maintained in accordance with our instructions. The sewage treatment systems can be used for non-domestic applications like Restaurants and Public Houses and indeed for higher percentage nitrification applications. We will be pleased to offer advice on special applications on a case by case basis. The process used is two stage extended biological filtration which is a highly aerobic treatment employing continuously recycled settled effluent lifted with air lift pumps and distributed over special high specific surface area suspended media. Three main areas of treatment are used in the process, the biological section can be considered as further subdivided into two stages. Primary Settlement Incoming domestic sewage enters the primary settlement chamber, which permits primary settlement and surplus sludge storage. On entering the primary settlement chamber the sewage is allowed to settle out under gravity with a minimum retention time of eleven hours which under normal conditions allows gross solids and rags to separate out. The retained extraneous material will gradually break down and subsequently migrate through into the next stage. There is a sludge return pump from the final settlement tank, which will also assist in providing dilution to the primary zone contents and reduces septicity and the risk of odour. It also minimises the risk of de-nitrification in the final settlement by returning secondary humus on an intermittent basis.


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Biological Treatment Biological treatment is arranged in two successive stages within the Biological chamber. The first section is dedicated to the reduction and substantial removal of carbonaceous BOD. This is achieved by picking up the screened liquor by airlift pumps and distributing it over the media, on which a biological culture develops naturally, neither seeding nor feeding normally being required. Inherent in the design is a multiple pass recycle which makes maximum use of both the available media and the dilution potential of the liquor zone to minimize the effect of shock load influent situations. The hydraulic basin of the first biological stage of treatment allows the level to fluctuate within a given range thereby providing capacity for surge management, in addition to the dilution in the primary settlement chamber. This avoids shock loading on treatment and downstream upsets in the final settlement stage. The second half of the biological treatment is fed by a separate air lift pump from the first stage compartment at a controlled rate. Conditions in the second stage have been engineered to be optimal for nitrification and to a lesser extent polishing for Biochemical Oxygen Demand reduction. Air lift pumps lift in a similar way to the first stage. The airlift pumps throughout the plant are driven by a low-pressure air blower which is remotely located above ground. Final Settlement The treated sewage is then gravity fed to the final settlement chamber, the baffle arrangement within this chamber allows clear water to rise to the surface of the tank and be decanted at the outlet. Periodically, excess humus sludge collected by the baffle arrangement is returned to the primary settlement tank using a submersible pump and timer set up. Unusual loading situations, weather, chemicals and antibiotics and excess grease can affect all biological sewage treatment systems. When operating an individual treatment plant, users should be aware of the sensitivity of a small plant and avoid putting potentially harmful materials through the plant. More about Nitrification In process terms the first stage reduces the BOD to a level sufficient to allow the second stage to Nitrify. Nitrification can be further divided into two. These are the conversion to Nitrite and then to Nitrate. Provided the residual BOD is low enough and sufficient dissolved oxygen is available, Nitrification will be achieved in the second biological stage. The percentage removal being related to the ammonia loading on the biological media. Some Nitrification will normally have taken place in the first stage but any significant BOD pollution of the second stage will detrimentally affect the Nitrification performance. Accordingly plants are unlikely to Nitrify, if overloaded.


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Cautionary Notes • We do not recommend the use of air admittance valves with W.C. systems connected to the

plant.

• Also we do not recommend pumped feed to plant without special reference to us.

• Sink waste disposal units should not be used in conjunction with the plant.

• Where installations serve any form of commercial kitchen. A Grease trap must be installed in the dedicated kitchen outlet drain.

• In hard water areas a softener may be required, where one is fitted, the spent regenerant must be routed to a separate small soakaway.

Applications 150/90P 200P 200/90P 250P 250/90P 300P 300/90P) 375P

Total BOD Loading 9 kg/day 12 kg/day 12 kg./day 15 kg/day 15 kg/day 18 kg/day 18 kg./day 22.5 kg./day

NH3 Loading 1.2kg/day 1.6kg/day 1.6kg/day 2.0kg/day 2.0kg/day 2.4kg/day 2.4kg/day 3.0kg/day

Maximum Flow 30m³/day 40m³/day 40m³/day 50m³/day 50m³/day 60m³/day 60m³/day 75m³/day

Peak Flow Rate (For ½ hr in any 2 hr period) 3.75m³/hr 5.00 m³/hr 5.00m³/hr 6.25 m³/hr 6.25m³/hr 7.50 m³/hr 7.50m³/hr 9.38 m³/hr

General Maintenance Sewage treatment installations will only perform as well as they are maintained. The best way to achieve this is to arrange a contract with Tekserv or an approved Service provider.

There will always be situations when a little self help may be sufficient to avoid call out and we describe here some basic checks which may prove useful:

• Firstly, keep children and pets away from the plant and always wear rubber gloves. Never try to climb into the plant.

• If in doubt ask Tekserv or our approved service organisation for advice. One of the things that will come from routine maintenance is evaluation of the need to desludge or not.

Having confirmed that the sludge situation is under control, the following basic checks can be made.

• Ensure that the protective mesh layer (Enkamat) on the top of the media bale is not blocked. If it is, then it can be removed, shaken, hosed off and repositioned. Alternatively, the Enkamat can be renewed and the old material disposed of safely.

• Check that the spray is covering the rectangular bale. This can be adjusted by the regulating valve attached to the air hose inside the plant.

• Ensure that the airlift in the centre of bale is not blocked, as this will also affect the spray pattern.

• Where pumped outlets are included check that the inlet connection is not flooded.

If in any doubt whatsoever please contact your service provider

• Your plant will require desludging periodically. This is because biological sewage treatment produces surplus sludge, the eventual accumulation of which will encroach on the space in the plant needed for treatment. The frequency of desludging required will depend on loading but as a guide you should inspect and consider desludging approx. every 3 months. The duration alters depending on loading and individual applications.


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As a part of a service contract you will be advised on your plants expected desludging frequency requirement.

Desludging can be included in the scope of service contracts, if required.

Empty the Primary settlement chamber every 3 months & the Final settlement chamber about every 9 months. The biomodule in between these 2 tanks should only need very infrequent emptying.

It is important that desludging contractors desludge properly, incorrect desludging can lead to damaged screens and poor plant performance.

Desludging Emptying and Desludging Procedure All biological treatment plants produce a surplus of humus solids, which from time to time have to be removed as a sludge in order to maintain process efficiency. More lightly loaded applications on purely domestic feed may only require desludging once or twice a year, whereas more heavily loaded installations like Public Houses and Restaurants will require desludging at least 4 times a year. Sites where commercial food preparation is carried out will also require grease traps to be emptied on a regular basis. Desludging must be carried out by a reputable company who may be located by reference to Yellow Pages, your District Council or from your local Water Authority. Tekserv may be able to help you with suggesting an emptying contractor. When ordering a tanker for desludging you will have to state the capacity of the unit to enable the correct size tanker to be scheduled. In this connection your attention is drawn to the table of plant capacities provided at the end of this procedure. Procedure To ensure that the plant is emptied correctly, the following procedure may be used by the Tanker Company. 1. Turn off the blower. 2. Always empty the Primary Settlement Chamber (PSC) first. 3. Place the hose at the inlet end of the chamber. 4. Make sure that the hose and end fitting are, as far as practical, kept away from the sludge return

pipework whilst raising and lowering. 5. The hose and end fitting must be positioned to draw from the very bottom to collect accumulated

settled sludge. 6. Ensure equilibrium of levels when desludging, so that the water pressure either side of the

dividing wall is equal. 7. Reduce the level by 300mm in the inlet side of the PSC, and then place the hose in the outlet

side of the PSC, reducing this level by 300mm. 8. Repeat this procedure until the compartment is completely empty. 9. Remove traces of sludge accumulation on the walls and bottom of the chamber. 10. Continue this procedure (points 3 to 9) in the next tank, Biological Treatment Chamber. 11. If a clean water hose is available, hose down any residual solids from the interior of the tank. Do

not hose off the biomass from the media unless it is blocked. 12. Move the hose to the third and final chamber taking care not to disturb the sludge return pump

and manifold. Check for the presence of any residual solids in the bottom of the final settlement chamber and if there are any present, remove them using the procedure above.

13. The biological tank (middle tank) should be refilled as speedily as is practical using mains supply water. It is advisable to leave the air blowers off until normal water level has been achieved.


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Liquid Volumes Standard Rate Treatment Plants

Model No. Litres Gallons 200P 56080 12336 250P 76900 16915 300P 82700 18192 375P 87250 19193

High Rate Treatment Plants

Model No. Litres Gallons 150/90P 51760 11385 200/90P 59880 13172 250/90P 81700 17972 300/90P 89600 19710

Installation

These guideline instructions apply to P-Range sewage treatment systems models 150/90P – 375P and should be read in conjunction with the appropriate Electrical Guidelines section. Before beginning the installation, the whole of these instructions must be read and complied with. Also, the following points must be noted: • Adherence to good Working Practices and the Health & Safety at Work Act on site should be

observed. • Prior to installation, check all tanks for damage and always handle with care, avoiding heavy

impact or contact with sharp objects. • Our tanks have been fully inspected before despatch from our factory. Once the tanks have

been installed we cannot accept claims for damage. • On no account should the specified maximum drain invert depth be exceeded. • Never fill a freestanding tank with water or back fill an empty tank. Always fill the tank with water

at the same time as the back fill material is placed. This avoids the risk of flotation and minimizes the applied loads to the tank.

• These instructions assume no more than pedestrian duty loadings will be applied to the final installation. Traffic or other heavy superimposed loads must not be transferred through the walls of the tank.

• Three separate excavations are required, such that the three chambers are located no closer than one metre of each other. Inter-linking pipework is not supplied.

• UPVC 160mmØ is required for the inlet and outlet connections as well as the inter-linking pipework between chambers. In addition to this, black 50mm MDPE pipework is required for the sludge return pump and is fitted between the final settlement chamber and the primary settlement chamber.

• All three chambers should be installed in accordance with these instructions (concrete backfill). • Select the unit location in accordance with building regulations, required distances from

buildings, water supplies and irrigation systems Site Planning

The following points should be considered before installation of the equipment: The discharge must have the permission of the relevant Environmental Regulator and the complete installation, including the specified irrigation system should have Planning and Building Control approval. In most cases, the effluent discharge is to an irrigation system. A porosity test should be carried out in accordance with the EPA Wastewater Treatment manual, “Treatment Systems for single houses” or EN 12566 Part 2, whichever is most recent. BS 6297 also provides design criteria. There must be at least 1 metre of clear, level ground all around the unit to allow for routine servicing.


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Wherever practicable, the unit should be installed as far as possible from any habitable building. Many Local Authorities will insist that the discharge from the wastewater treatment plant should be sited at least 10m away from watercourses and any other buildings. The EPA Manual for Southern Ireland states the recommended minimum distances from a treatment plant to a development/dwelling as: System size of 141-160Pe a distance of 46m & >161Pe a distance of 50m. Other distance criteria are provided in the EPA manual, 10m from a watercourse, 10m from a well, 50m from a lake, 3m form site boundary, 4m from a road and slope breaks. Further information can be obtained though your Local Authority and in the Building Regulations in the UK and though the EPA in Eire. Care should be taken not to place the unit in close proximity to any openings within the building. Adequate access must be provided for routine de-sludging and maintenance. Usually the unit should be sited within 30 metres of a hard standing area suitable for a vacuum tanker. Vehicles should not be permitted within a distance equal to the depth of the unit, unless suitable structural protection is provided to the installation. The units must be installed at a level which will allow connection to the incoming drain and a free discharge at the system outlet (excepting units with an integral discharge pump). Effluent pumping stations are available to lift the discharge to a higher level and/or pump to remote discharge points. If the unit has to be recessed, measures must be taken to ensure that it cannot be flooded by surface water run-off. Where necessary the unit should be fenced off or otherwise protected. Maintenance access must be maintained as above. The drainage system connecting to the unit must be adequately vented in accordance with the Building Regulations. The head of the drainage system should be connected to a stack pipe, open at high level, so as to draw foul air from the system and sited with consideration to prevailing wind direction. Tile vents & Air admittance valves should not be used as the sole drainage ventilation facility, but if this cannot be avoided, the unit should be independently ventilated. All inspection points within the drain system should be sealed so as to enable ventilation at high level.

Acceptable tolerance for installation of the each t ank is +/- 20mm, with no more than +/- 50mm for the complete system, for correct plant operation.

The Concrete Specification is not a site specific installation design.

GENERAL CONCRETE SPECIFICATION IN ACCORDANCE WITH BS EN 206-1 ( BS 8500-1)

TYPE OF MIX (DC) DESIGN

PERMITTED TYPE OF CEMENT BS 12 (OPC): BS 12 (RHPC): BS 4027 (SRPC)

PERMITTED TYPE OF AGGREGATE (coarse & fine)

BS 882

NOMINAL MAXIMUM SIZE OF AGGREGATE 20 mm

GRADES: C25 /30

C25 /30

C16 /20

REINFORCED & ABOVE GROUND WITH HOLDING DOWN BOLTS REINFORCED (EG. FOR HIGH WATER TABLE) UNREINFORCED (NORMAL CONDITIONS)

MINIMUM CEMENT CONTENT

C30 C20

270 - 280 Kg/M3 220 - 230 Kg/M3

SLUMP CLASS S1 (25mm)

RATE OF SAMPLING READY MIX CONCRETE SHOULD BE SUPPLIED COMPLETE WITH APPROPRIATE DELIVERY TICKET IN ACCORDANCE WITH BS EN 12350-1

NOTE: STANDARD MIXES SHOULD NOT BE USED WHERE SULP HATES OR OTHER AGGRESSIVE CHEMICALS EXIST IN GROUND WATER


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Prepare a hydraulic level profile for the installation which ensures gravity flow throughout. Having excavated, if the base is excessively wet or unstable, lay 200mm of hard-core and line with polythene, prior to laying the 150mm level base of concrete. If necessary, make a sump hole to one corner of the excavation to accommodate a suction hose from a site pump, thereby keeping the excavation as dry as possible. Lower the tank on to the levelled concrete, ensuring the top of the tank is completely level and that all connections line up. With the tank in position commence filling with water and at the same time back fill with concrete to just below the outlet/inlet levels. It is important that these two operations are carried out simultaneously to avoid the risk of flotation. When back filling with concrete it is essential that the underside of the tank is evenly supported and there are no voids, especially on the underside between the ribs. Concrete backfill must be manually compacted; however we do not recommend the use of vibrating lances. Make the inlet, outlet and air duct connections. Continue back filling to 50mm below the top flange with concrete and then complete the installation to ground level with free flowing soil.

When plants are concrete back filled care should be taken not to concrete in cover fixings. No soil or material to be placed upon the top of the cover. Surface Water It is essential that all surface water be segregated and excluded from entry to the plant. Self Help In order to minimize the need for dealing with emergency situations we recommend that P-Range units have a Pre-service Agreement Inspection, then regularly serviced by Tekserv or our Approved Service Engineers.

Provided that your plant is installed, operated correctly and serviced, you should not need to get into much – if any – self help.

However, some of the most likely question and answer situations are listed below. Firstly, any sewage treatment plant, if abused, can become a health hazard. If in any doubt ask Tekserv or our Approved Service Engineer. Blower Stopped: Check isolator is switched on, the incoming power supply circuit and fuse. Blower works but no water distribution inside the plant: Check hose connections If the air lift pipes are suspected to be blocked, call for service Check regulating valve is not closed Plant Odour: Check blower working If blower working, plant probably needs desludging. Check vent circuit is clear. Check that the air duct entering the blower housing has been sealed with foam. Plant Flooding Check for blocked outlet system. If pumped outlet, check for pump operation, check pump isolator and power supply.


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Do’s and Don’ts Do take out a service agreement and let the experts look after your plant.

Do contact Tekserv for advice if you have any cause for concern.

Don’t pump feed the plant without reference to Tekserv.

Don't use a waste disposal unit you are adding to the load and the may not be adding to the load and the unit may not be able to cope.

Don’t throw any medicines down the toilet.

Don’t empty large quantities of bleach or similar cleaning reagents into the system.

Don’t empty cooking oil or similar down the sink.

Don’t cover the plant with soil material or prevent access for service and desludging.

Don’t apply a hose or jet wash to the biological filter unless specifically advised to.

Don’t try to enter the plant

Don’t put sanitary towels, incontinence pads, nappies, tampons or other non biodegradable items’ down the toilet. Blocked air lifts Occasionally air lifts block. Usually this is as a result of non biodegradable products entering the unit, such as sanitary items, rags, J clothes, plastic bags, etc. These items should not be allowed to enter the unit, as they will adversely affect the liquid distribution, the build up of biomass, overall performance and effectiveness of the unit. Sometimes blockages occur as a result of formation of calcium carbonate solids within the air lift pipe. Calcium carbonate is a gritty white to brown solid. The solid that forms within the pipe varies in colour and consistency depending on the nature of the sewage. This type of blockage usually occurs because there is too much calcium present within the unit, the solid forms when the water chemistry is altered by the air bubbled through the pipe. This is a very unusual occurrence. To prevent reoccurrence, you should Ensure that no ground or surface water is allowed to enter the unit. Check that where a softener is connected to the water supply of the property, that the regenerant chemicals, (which are high in calcium and magnesium salts) are not being fed into the unit. Consider a softener to reduce the background level of calcium in the main feed supply. When these blockages occur, the calcium carbonate formed is insoluble, and heavy. Within the pipe it is also sticky with other sewage solids. When wet the solids are not easily cleared from the pipe. Should you have a recurring problem, please contact us and we will provide a spare air lift pipe. Pre-service Agreement Inspection We recommend that our Engineers should inspect the equipment. However, in situations where expediency is required for owner/installer to inspect, the following basic instructions may prove useful. Check brick blower enclosure (supplied by others) has been correctly positioned and has been correctly wired to a suitable electrical supply, ensuring the equipment is correctly earthed. (Refer to Electrical Guidelines). The electrical equipment must be inspected by a qualified Electrician and installed to the local Electricity Authority regulations. Ensure the air hose has been securely connected to the hose adapter inside the brick enclosure and the other end is connected to the manifold within the plant, ensuring that there are no sharp bends or kinks causing airflow restrictions.


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The manifolds for the sludge return pump are supplied separately, one for the primary settlement chamber and one for the final settlement chamber. Once fitted into the appropriate tank an adequate length of black 50mm MDPE pipe joins the pump connections (not supplied). The sludge return pump can then be fitted into the final settlement chamber with the single-phase cable routed through the linked ducting to the blower housing. Make sure construction debris is removed from within the plant. It is essential that the all the chambers of the sewage treatment system are filled with clean water to the outlet level. Before switching on the blower, ensure the air filter is correctly fitted and that the air intake is completely free of any obstructions. Switch on the blower. The airflow will activate the air lift pumps distributing the water over the biological filter. Check the centralisation of the distribution heads and adjust if necessary to provide an even covering of the biological filters. Adjust the spray of distributions using the regulating valves in each airline inside the top of the plant.

Allow sewage to enter the plant as necessary and ensure that the blower is left running continuously. Biomass will build-up naturally over 4 - 8 weeks and the plant should then treat sewage naturally. To ensure the plant is functioning correctly and the final discharge is to the required standard, contact Tekserv and arrange a pre-service agreement inspection stating the original start-up date. In order to get the best from your plant, we recommend that either Tekserv or one of their approved Service Engineers carry out a pre-service agreement inspection and service the plant. This reduces the risk of non-compliance and prosecution. It also avoids unnecessary desludging, and minimizes the cost of emergency call out visits. Necks (Primary & Final Settlement Chambers Only) Having back filled to just below the top of the tank. Fit the access shaft ensuring all surfaces are dry, and then spread both tubes of mastic liberally around the base of the shaft and the socket of the tank. Beat shaft firmly into the socket ensuring the mastic forms a watertight joint. Once the necks on both the Primary Settlement Chamber and Final Settlement Chamber are fixed into position, the sludge return pump line (supplied by others) can then be installed. For this the pump manifold for the pump is installed into the neck on the inlet side of the FSC and similarly the corresponding manifold in the PSC is to be fitted in the neck at the outlet of the PSC. The installation of both of these manifolds will require a suitable hole to be cut in the each neck, the position of which being determined by the individual site. Continue back filling to ground level with free flowing soil, taking care not to strike the access shaft and disturb the mastic seal. The shaft may be trimmed at ground level and capped off in the normal way with a manhole cover and frame. Airline Ducting In the course of making the air duct connection, it will be necessary to run 110mm ducting from the blower. This ducting must connect up through an independent concrete base for blower base location. The duct must be laid with long radius bends to enable the hose to be fed through. The slab should be located 3 – 13 metres from the tank such that the 15 metres of hose provided is sufficient. The slab should be 150mm thick and be large enough to accommodate the blower enclosure. The location should take into account noise sensitivity and preferably be in a shaded position. Once the air hose is installed the annulus around the top of the duct should be filled with spray foam. A competent electrician in accordance with the appropriate regulations should make electrical connection from the supply.


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Invert Detail ( Primary Settlement Chamber only) The tank is supplied with up to a 0.9 metre inlet invert with a fall across the tank of 100mm. Care should be taken so that the outlet pipework does not run uphill to the Treatment plant. A minimum fall of 50mm from the primary settlement chamber to the biological treatment chamber should be maintained. Electrical Installation Guidelines These notes are not intended to replace the latest I.E.E. Wiring Regulations. Only qualified and competent persons should carry out any electrical installation. Outside electrical installations can present dangers that are not usually encountered in internal electrical wiring. External equipment is subjected to the elements and particular attention must be made to the suitability of the cable, glands, connection units etc. for outside use. The possibility of attack by vermin should also be considered and adequate precautions taken. All High Capacity sewage treatment systems (150/90 – 375P), require a mains supply of 415 Volts, 50 Hz, three phase (3~) and neutral, maximum 20 Amps. All electrical components are enclosed within the brick blower enclosure (supplied by others) with the exception of the submersible (sludge return) pump and the Xenon beacon for the PPFDS unit. The three-phase (3~) supply should be brought into the brick blower enclosure (supplied by others) via ducting and connected to the isolator panel as per the wiring diagram. The submersible pump is controlled by a preset timer supplied connected to the isolator panel. Once the pump is installed in the Final Settlement Chamber the 10 metres of cable needs to be connected via ducting into the blower housing using the supplied waterproof connector (adjust the length of cable to the pump as required). Note a separate single-phase (1~) supply is not required. To complete the electrical installation, wire the xenon beacon into the PPFDS unit and mount on the outside of the housing. Health & Safety at Work, etc. ACT 1974 To ensure that the equipment described is safe both for personnel and property it should be installed, inspected and maintained by or under the supervision of qualified persons. Regard should be taken of IEE Wiring Regulations, Codes of Practice, Statutory Requirements and any specific instructions issued by the supplier of these details.

Earthing - All equipment must be earth bonded in accordance with the latest IEE Wiring Regulations. We Reserve the right to alter these details without prior notice.


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Power & Pressure Failure Detection System Description The controls are housed within an IP56 grey polycarbonate enclosure, the approximate dimensions of which are 300 x 220 x 120 mm. A single test push button is mounted on the side of the unit, mounted inside the brick blower enclosure (supplied by others). Operation

The panel is designed to be used in conjunction with the Beacon unit to provide warning of either loss of power or air pressure failure. A relay SR monitors the presence of power being available to the equipment. In the event of power not being present then the relay is de-energized and the alarm supply to the beacon is enabled. A relay PR is held on by a differential pressure switch. The presence of a small pressure differential within the blower housing indicates that the blower is operating correctly and the relay is energized. Should this pressure differential not be present then the relay is de-energized and the alarm supply to the beacon is enabled. A test push button is provided for occasional use in order to confirm correct operation of the unit.

The alarm supply to the beacon is provided by a maintenance free 12V sealed lead acid battery, the capacity of which will provide up to 16 hours of beacon operation.

The unit is supplied with the battery disconnected from the unit. With the supply switched off carefully push the ‘fasten’ connectors onto the battery terminals. Orange to the positive terminal (+), purple to the negative terminal (-). It may be necessary to charge the battery, refer to the charging notes. A constant voltage charger automatically recharges the battery with trickle (float) charge facility.

Beacon Units Applications They are included in the Power and pressure Failure Detection System (PPFDS).

Description

These notes should be read in conjunction with General notes on outside installation. This unit provides an external visual indication of failure and takes the form of a high intensity Xenon beacon. When used in conjunction with the PPFDS unit, the beacon provides indication of power or air pressure failure. It operates at 12V. on all systems.

The unit has an IP65 rated beacon fixed to an IP56 rated enclosure supplied ready to mount on a suitable surface. A 2-metre length of cable for connection to the panel terminals is provided. This cable is of the flexible armoured type and should not be substituted for any other type. The armour is intended to provide mechanical protection only and should not be used as a conductor.

The brown core should be connected to the positive terminal and the blue core connected to the negative terminal.

Important

This unit is designed to be simple to install and safe in operation. Any modification may adversely affect its weather resistance in operation. If in any doubt, please consult Tekserv for advice. This is a sealed unit and not serviceable.


14 of 14

Blower Isolator Electrical Details

Ensure that the brick blower enclosure is protected by a suitable RCD to BS 4293 and a MCB to BS 3871. Cable installation below ground should be SWA to BS 6346, unless otherwise stipulated. The blower isolator housing provided includes an overload trip. This overload trip will be pre-set to 1.1 times the blower full load current.

Before switching on the blower, ensure the air filter is correctly fitted and that the air intake is completely free of obstruction.

Blower Housing NB: A brick blower housing is to be constructed on site by others . The transport cover supplied with the blower assemb ly is to be discarded once received and NOT used as a permanent enclosure. In the course of making the air duct connection, it will be necessary to run 110mmØ ducting from the connection at the outlet end of the treatment chamber and from the turrets of the settlement chambers. The ducting from the treatment chamber and the final settlement chamber should be laid with long radius bends to enable the air hose or electrical cable to be threaded through and must connect up through an independent concrete slab for the brick blower enclosure. The slab should be 150mm thick and at least 1.5 sq metres internally, located between 3 to 13 metres of the plant such that the hose length supplied is sufficient. It is recommended that the ducting from the final settlement chamber and that of the treatment chamber is joined together, so that only one entry into the brick blower enclosure is required (refer to typical installation drawing). The location should take into account noise sensitivity and preferably be in a shaded position. The cavity beneath the enclosure base should be filled by drilling a hole and filling with sand or foam. Also, once the air hose is installed the annulus around the hose at the top of the duct should be sealed with spray foam. The incoming power for the system must be a three phase supply and a competent electrician in accordance with the appropriate regulations should make all the electrical connections. A brick housing constructed around the blower assembly should have appropriate access for routine maintenance to blower. Refer to the appropriate sales drawings for models and dimensions.

SECTION D – DISCHARGES TO THE AQUATIC ENVIRONMENT

Attachment D1: Discharges to Surface Waters

Table D.1(i)(a): Emissions to Surface/Ground Waters (Primary Discharge Point)

Table D.1(i)(b): Emissions to Surface/Ground Waters – Characteristics of the Emission (Primary Discharge Point)

COA Application Annex I

Table D.1(i)(a): EMISSIONS TO SURFACE/GROUND WATERS (Primary Discharge Point)

Volume emitted m3 (i)

Normal/day 14.63 Maximum/day 43.88

Maximum rate/hour 1.83 min/hr hr/day day/year

Dry Weather Flow/sec 0.0002 Period of emission (avg) 60.00 24.00 365.00

Current PE 65

Future PE 65

Table D.1(i)(b): EMISSIONS TO SURFACE/GROUND WATERS - Characteristics of The Emission

(Primary Discharge Point)

1 pH 7.36

2 Temperature NT

3 Electrical Conductivity (@ 25 'C) NT

(mg/l) kg/day

4 Suspended Solids 55.67 0.814

5 Ammonia as (N) 32.12 0.470

6 Biochemical Oxygen Demand 114.47 1.674

7 Chemical Oxygen Demand 399.11 5.837

8 Total Nitrogen (as N) 40.61 0.594

9 Nitrite (as N) NT

10 Nitrate (as N) NT

11 Total Phosphorus (as P) 5 0.073

12 Orthophosphate (as P) 3.7 0.054

13 Sulphate (SO4) NT

(μg/l)

14 Phenols NT

Normal Flow rate= 14.63

Note:

Max. daily average per day

The maximum daily average determined based on the latest effluent sampling data

obtained from 2014 to 2016 period included in Attachment E.4 (a) of this application.

(sum)

SECTION E – MONITORING

Attachment E1: Wastewater Discharge Frequency &

Quantities – Existing

Table E.1(i): Waste Water Frequency and Quantity of Discharge Primary Discharge Points

TABLE E.1(i): WASTE WATER FREQUENCY AND QUANTITY OF DISCHARGE – Primary Discharge Point

Identification code for discharge point Frequency of discharge (days/annum) Quantity of Waste Water Discharged

(m³/annum)

SW1 365 5,338

SECTION E – MONITORING

Attachment E4: Sampling Data

Attachment E.4(a): Effluent Sampling Data

Attachment E.4(b): Influent Sampling Data

SECTION F – EXISTING ENVIRONMENT & IMAPCT OF THE DISCHARGE(S)

Attachment F1: Assessment of Impact on Receiving Surface

or Ground Water

F.1: Appropriate Assessment

Table E.4(a) Effluent Sampling Data

mg/l mg/l mg/l mg/l mg/l mg/l mg/l

pH BOD COD Suspended Solids Total Nitrogen Total Phosphorus Ammonia(N) Ortho-phosphate

- - - - - - - -

- - - - - - - -

Effluent 01/02/2014 Grab 7.56 27.00 97.00 57.00 31.84 4.20 24.60 2.61

Effluent 01/04/2014 Grab 7.07 103.00 502.00 4.00 46.50 5.80 28.41 5.57

Effluent 01/08/2014 Grab 7.38 68.00 242.00 87.00 19.34 1.80 14.94 1.53

Effluent 05/03/2015 Grab 7.39 25.20 100.00 28.00 15.90 2.50 9.90 1.21

Effluent 01/05/2015 Grab 7.62 58.00 848.00 67.00 49.00 5.80 34.89 3.38

Effluent 06/08/2015 Grab 7.27 190.00 442.00 48.00 39.40 6.70 32.82 3.87

Effluent 01/10/2015 Grab 7.36 176.00 543.00 88.00 68.00 7.60 56.99 5.96

Effluent 09/03/2016 Grab 7.37 167.00 370.00 68.00 48.70 5.65 40.83 4.31

Effluent 04/05/2016 Grab 7.26 216.00 448.00 54.00 46.80 4.97 45.68 4.85

Sample

TemplateSample Date Sample Method

Table E.4(b) Influent Sampling Data

mg/l mg/l mg/l mg/l

pH BOD COD Suspended Solids Ammonia(N)

- - - - -

- - - - -

Influent 01/02/2014 Grab 8.31 362.00 1188.00 634.00 26.03

Influent 01/08/2014 Grab 7.92 49.00 194.00 49.00 26.22

Influent 05/03/2015 Grab 8.84 247.20 301.00 90.00 17.10

Influent 01/05/2015 Grab 7.89 372.00 972.00 273.00 19.83

Influent 06/08/2015 Grab 7.44 97.00 243.00 38.00 7.96

Influent 01/10/2015 Grab 7.64 395.00 728.00 131.00 71.52

Influent 09/03/2016 Grab 8.90 497.00 1318.00 382.00 17.99

Influent 01/04/2016 Grab 7.40 174.00 511.00 2617.00 12.11

Influent 04/05/2016 Grab 7.62 230.00 481.00 307.00 14.56

Sample Template Sample Date Sample Method

Irish Water

Report

Appropriate Assessment Screening as part of the Cullyfad

Certificate of Authorisation Application

2 | Irish Water AA Screening - Cullyfad

Contents

Introduction 3

Legislative Context 3

Methodology 5

Guidance Followed 5

Stages Involved in the Appropriate Assessment Process 6

Stage 1: Screening / Test of Significance 7

Consultation 7

Screening 8

Management of the Site 8

Description of the Project 8

Description of the Receiving Environment and Monitoring Results 9

Brief Description of the Natura 2000 Sites 10

Possible Effects of the Waste Water Discharge in the Natura 2000 Sites 13

Direct, Indirect or Secondary Impacts 13

Possible Cumulative Impacts with other Plans and Projects in the Area 13

Screening Assessment 14

Likely Changes to the Natura 2000 Site(s) 16

Elements of the Project where the Impacts are Likely to be Significant 16

Screening Conclusions and Statement 17

Finding of No Significant Effects Report Matrix 18


Introduction

This report provides an Appropriate Assessment (AA) Screening of the existing Waste Water

Treatment Plant (WwTP) at Cullyfad, Co. Longford, for the purposes of the Waste Water

Discharge (Authorisation) Regulations, 2007 (S.I. No. 684 of 2007), as amended. It assesses

whether the on-going operation of the plant, alone or in combination with other plans and

projects, is likely to have significant effects on a Natura 2000 Site(s) in view of best scientific

knowledge and the conservation objectives of the site(s). Natura 2000 Sites are those identified

as sites of European Community importance designated as Special Areas of Conservation under

the Habitats Directive or as Special Protection Areas under the Birds Directive.

This report follows the guidance for AA published by the Environmental Protection Agency’s

(EPA) ‘Note on Appropriate Assessments for the purposes of the Waste Water Discharge

(Authorisation) Regulations, 2007 (S.I. No. 684 of 2007)’ (EPA, 2009); and takes account of the

Department of the Environment, Heritage and Local Government’s guidelines ‘Appropriate

Assessment of Plans and Projects in Ireland. Guidance for Planning Authorities’ (DoEHLG, 2009)

and Circular L8/08 ‘Water Services Investment and Rural Water Programmes – Protection of

Natural Heritage and National Monuments’ (DoEHLG, 2008).

Legislative Context The Council Directive 92/43/EEC on the Conservation of Natural Habitats and of Wild Fauna and

Flora, better known as “The Habitats Directive”, provides legal protection for habitats and species

of European importance. Articles 3 to 9 provide the legislative means to protect habitats and

species of Community interest through the establishment and conservation of an EU-wide

network of sites known as Natura 2000. These are Special Areas of Conservation (SACs)

designated under the Habitats Directive and Special Protection Areas (SPAs) designated under

the Conservation of Wild Birds Directive (79/409/ECC) as codified by Directive 2009/147/EC.

Articles 6(3) and 6(4) of the Habitats Directive set out the decision-making tests for plans and

projects likely to affect Natura 2000 sites (Annex 1.1). Article 6(3) establishes the requirement for

Appropriate Assessment (AA):

Any plan or project not directly connected with or necessary to the management of the

[Natura 2000] site but likely to have a significant effect thereon, either individually or in

combination with other plans or projects, shall be subjected to appropriate assessment

of its implications for the site in view of the site’s conservation objectives. In light of the

conclusions of the assessment of the implications for the site and subject to the

provisions of paragraph 4, the competent national authorities shall agree to the plan or

project only after having ascertained that it will not adversely affect the integrity of the

site concerned and, if appropriate, after having obtained the opinion of the general

public.


Article 6(4) states:

If, in spite of a negative assessment of the implications for the [Natura 2000] site and in

the absence of alternative solutions, a plan or project must nevertheless be carried out

for imperative reasons of overriding public interest, including those of a social or

economic nature, Member States shall take all compensatory measures necessary to

ensure that the overall coherence of Natura 2000 is protected. It shall inform the

Commission of the compensatory measures adopted.


Methodology

Guidance Followed Both EU and national guidance exists in relation to Member States fulfilling their requirements

under the EU Habitats Directive, with particular reference to Article 6(3) and 6(4) of that Directive.

The methodology followed in relation to this AA Screening has had regard to the following

guidance:

Note on Appropriate Assessments for the purposes of the Waste Water Discharge

(Authorisation) Regulations, 2007 (S.I. No. 684 of 2007). Environmental Protection

Agency, (EPA, 2009).

Appropriate Assessment of Plans and Projects in Ireland: Guidance for Planning

Authorities. Department of Environment, Heritage and Local Government, (DoEHLG,

2010).

Circular L8/08 – Water Services Investment and Rural Water Programmes – Protection

of Natural Heritage and National Monuments. Department of Environment, Heritage and

Local Government, (DoEHLG, 2008).

Communication from the Commission on the Precautionary Principle. Office for Official

Publications of the European Communities, Luxembourg, (EC, 2000a).

Managing Natura 2000 Sites: the provisions of Article 6 of the ‘Habitats’ Directive

92/43/EEC, Office for Official Publications of the European Communities, Luxembourg,

(EC, 2000b).

Assessment of plans and projects significantly affecting Natura 2000 sites:

Methodological guidance on the provisions of Articles 6(3) and (4) of the Habitats

Directive 92/43/EEC. Office for Official Publications of the European Communities,

Brussels (EC, 2001).

Guidance document on Article 6(4) of the ‘Habitats Directive’ 92/43/EEC – Clarification

of the concepts of: alternative solutions, imperative reasons of overriding public interest,

compensatory measures, overall coherence, opinion of the Commission. Office for

Official Publications of the European Communities, Luxembourg, (EC, 2007).

Nature and biodiversity cases: Ruling of the European Court of Justice. Office for Official

Publications of the European Communities, Luxembourg (EC, 2006).

Marine Natura Impact Statements in Irish Special Areas of Conservation: A working

document, National Parks and Wildlife Service, Dublin (NPWS, 2012).

European Communities (Birds and Natural Habitats) Regulations, 2011 (S.I. No.477 of

2011).


Interpretation Manual of European Union Habitats. Version EUR 28. European

Commission (EC, 2013).

Stages Involved in the Appropriate Assessment Process

Stage 1: Screening / Test of Significance

This process identifies whether the WwTP discharge is directly connected to or necessary for the

management of a Natura 2000 Site(s); and identifies whether the discharge is likely to have

significant impacts upon a Natura 2000 Site(s) either alone or in combination with other projects

or plans.

The output from this stage is a determination for each Natura 2000 Site(s) of not significant,

significant, potentially significant, or uncertain effects. The latter three determinations will cause

that site to be brought forward to Stage 2.

Stage 2: Appropriate Assessment

This stage considers the impact of the WwTP discharge on the integrity of a Natura 2000 Site(s),

either alone or in combination with other projects or plans, with respect to (1) the site’s

conservation objectives; and (2) the site’s structure and function and its overall integrity.

Additionally, where there are adverse impacts, an assessment of the potential mitigation of those

impacts

The output from this stage is a Natura Impact Statement (NIS). This document must include

sufficient information for the EPA to carry out the appropriate assessment. If the assessment is

negative, i.e. adverse effects on the integrity of a site cannot be excluded, then the process must

consider alternatives (Stage 3) or proceed to Stage 4.

Stage 3: Assessment of Alternatives

This process examines alternative ways of achieving the objectives of the project or plan that

avoid adverse impacts on the integrity of the Natura 2000 Site. This assessment may be carried

out concurrently with Stage 2 in order to find the most appropriate solution. If no alternatives

exist or all alternatives would result in negative impacts to the integrity of the Natura 2000 Sites

then the process either moves to Stage 4 or the project is abandoned.

Stage 4: Assessment Where Adverse Impacts Remain

An assessment of compensatory measures where, in the light of an assessment of Imperative

Reasons of Overriding Public Interest (IROPI), it is deemed that the project or plan should

proceed.


Stage 1: Screening / Test of Significance In complying with the obligations under Article 6(3) and following the appropriate guidelines, this

AA Screening has been structured as a stage by stage approach as follows:

Description of the project;

Identification of Natura 2000 sites potentially affected;

Identification and description of individual and cumulative impacts likely to result;

Assessment of the significance of the impacts identified above on site integrity;

Exclusion of sites where it can be objectively concluded that there will be no significant

effects; and

Screening conclusion.

Consultation The EPA, as the competent authority, will seek NPWS advice as may be required in reaching

their decision on a WwTP discharge. The NPWS can only communicate with the applicant (i.e.

Irish Water) on request from the competent authority, when the formal application process to the

competent authority has already commenced.


Screening

Management of the Site The Cullyfad WwTP is not directly connected with or necessary to the management of the site for

nature conservation.

Description of the Project

The agglomeration consist solely of a residential estate known as Woodlands Park located in

Cullyfad, County Longford, and is served by the Woodlands Park Wastewater Treatment Plant

(Grid Reference 218651E, 277270N).

The WWTP completed in 2014 was designed to cater for the residential estate of Woodlands

Park, Cullyfad, Co. Longford. The design consists of 150mm & 225mm PVC sewer network ,

pump station and treatment facility. The treatment plant is designed to cater for 375 persons, in a

375 p.e. Envirocare P375 series proprietary treatment system. The current population equivalent

(p.e.) of the agglomeration being served by the WwTP is 63.

The treatment system, currently being maintained by Longford County Council, was built in

accordance with BS6297:1983, the British standard code of practice for design and installation of

small sewage treatment works. The WWTP consists of a 1 No.primary settlement chambers, 1

No.Balance tank, 1 No. 375 p.e. biozone, 1 No. final settlement tank, 1 forward feed pump

station to the discharge point. The treatment plant has a total design flow at 3DWF of 67.5

metres cubed per day which discharges to a percolation area. The waste water treatment plant is

mostly buried underground with only the access points for de-sludging and maintenance

observed above ground.

Effluent data from 2016 is presented in Table 1.0 together with Urban Wastewater Treatment

Regulations (UWWT) limit values.

Table 1.0: Cullyfad WwTP Effluent Monitoring Data

Date

BO

D m

g/l

O2

CO

D

mg

/l O

2

SS

m

g/l

To

tal

Nit

rog

en

mg

/l

To

tal

Ph

os

ph

oru

s

mg

/l

Am

mo

nia

mg

/l

N

Ort

ho

ph

os

ph

at

e m

g/l

P

UWWT ELV* 25 125 35 15 2

09/03/2016 167 370 68 48.7 5.65 40.83 4.31

04/05/2016 216 448 54 46.8 4.97 45.68 4.85

* Limits set for plants >2000p.e. for BOD, COD and SS in Schedule 2, Part 1 of the UWWT Regulations 2001 (S.I.

254 of 2001); Limits set for plants >10,000p.e. for Total Nitrogen and Total Phosphorus in Schedule 2, Part 1 of

the UWWT Regulations 2001 (S.I. 254 of 2001) for discharges to sensitive waters listed in Schedule 1 of the

UWWT (Amendment) Regulations 2010 (S.I. 48 of 2010) subject to EPA determination following amended

regulation 4(3) of S.I. No 254/2001.


The effluent discharge does not meet the Urban Wastewater Treatment Regulations 2001(S.I.

No. 254/2001 as amended) emission limits for BOD, COD and SS. It is noted that as the plant

receives a load of <2000 p.e. that these limits do not apply.

Description of the Receiving Environment and Monitoring Results

The WwTP discharges to ground so consequently there has been no ambient water quality

sampling undertaken. The local groundwater body ‘Longford Ballinalee’ (IE_SH_G_149) has

been assigned Good WFD status (2010-2015).

The nearest surface waterbody, the Camlin River, is located ca. 300m to the north of the

discharge point (Camlin_040). The EPA monitor the Camlin River upstream (Argar Br -

RS26C010600) and downstream (Br nr Kiltyreher) of the Cullyfad area, with both sites achieving

High water quality (Q4-5) in 2014. The Camlin 40 has been assigned Good WFD status.


Brief Description of the Natura 2000 Sites

This section of the screening process describes the Natura 2000 sites within a 15km radius of

the WwTP discharge location. A 15km buffer zone has been chosen as a precautionary

measure, to ensure that all potentially affected Natura 2000 sites are included in the screening

process, which is in line with Appropriate Assessment of Plans and Projects in Ireland –

Guidance for Planning Authorities produced by the Department of the Environment, Heritage and

Local Government.

Table 2.0 list the SACs that are within 15km of the WwTP discharge location, while Table 3.0

lists the SPA’s, and Figure 1.0 shows their location in relation to the Cullyfad WwTP discharge.

The qualifying interests of each of the identified Natura 2000 Sites is also provided.

Table 4.0: SACs located within 15km of Cullyfad WwTP discharge

Site

Code

Site Name Qualifying Habitats Qualify Species

002346 Brown Bog SAC Active raised bogs [7110]

Degraded raised bogs still capable of natural regeneration [7120]

Depressions on peat substrates of the Rhynchosporion [7150]

001818 Lough Forbes Complex

SAC

Natural eutrophic lakes with

Magnopotamion or Hydrocharition -

type vegetation [3150]

Active raised bogs [7110]

Degraded raised bogs still capable

of natural regeneration [7120]

Depressions on peat substrates of

the Rhynchosporion [7150]

Alluvial forests with Alnus glutinosa

and Fraxinus excelsior (Alno-

Padion, Alnion incanae, Salicion

albae) [91E0]

002341 Ardagullion Bog SAC Active raised bogs [7110]

Degraded raised bogs still capable




002348 Clooneen Bog SAC Degraded raised bogs still capable




Bog woodland [91D0]


Table 3.0: SPAs located within 15km of Cullyfad WwTP discharge

Site

Code

Site Name Special Conservation Interests

004101 Ballykenny-Fisherstown

Bog SPA

Greenland White-fronted Goose (Anser

albifrons flavirostris) [A395]

004045 Glen Lough SPA Whooper Swan (Cygnus cygnus) [A038]


Figure 1.0 Natura 2000 Sites


Possible Effects of the Waste Water Discharge in the Natura 2000 Sites

The purpose of this section of the screening is to examine the possibility that the existing waste

water discharge, either individually or in combination with other plans and projects, may result in

significant negative effects on the Conservation Objectives and the integrity of the Natura 2000

Sites identified.

The most apparent potential risk to a Natura 2000 Site(s) from a WwTP discharge is to the water

quality of the receiving environment, and if the receiving environments water quality has the

potential to interact with the qualifying interests of the Natura 2000 Sites identified.

Direct, Indirect or Secondary Impacts

The WwTP discharges poor-quality effluent to the Longford-Ballinalee ground waterbody. As

described above the ground waterbody and nearby Camlin River are at Good WFD status.

Of the six Natura 2000 sites identified within 15km of the discharge point, none are located

within the Longford-Ballinalee ground waterbody. The nearest Natura 2000 site is located over

8km to the west of the Cullyfad WwTP. While these remote SACs support habitats with possible

groundwater connections (lakes and bogs), due to their distance from Cullyfad and their location

outside of the Longford-Ballinalee ground waterbody, they do not have the potential to be

impacted by the discharge. Any possible links to the Camlin River have not resulted in any

impact on the water quality of the river, which is at high status in terms of biology upstream and

downstream of the Cullyfad agglomeration. Consequently, surface water connected sites

downstream (Lough Forbes SAC and Ballykenny-Fisherstown SPA) do not have the potential to

be impacted via this pathway.

In accordance with the Waste Water Discharge (Authorisation) Regulations 2007 (S.I. No. 684 of

2007) the waste water discharged from Cullyfad WwTP will not impact on the conservation

objectives of any Natura 2000 site. No significant adverse impacts on the Annex I habitats or

Annex II species of any Natura 2000 sites are anticipated as a result of the waste water

discharge from Cullyfad WwTP.

Possible Cumulative Impacts with other Plans and Projects in the Area

As part of Stage 1 Screening, in addition to the existing waste water discharge, other relevant

projects and plans in the relevant region must also be considered. This step aims to identify at

this early stage any possible significant effects on the Natura 2000 Sites from the waste water

discharge in-combination or cumulative with other plans and projects. Existing plans and projects

which have been examined include:

Longford County Development Plan 2015-2021;

Camlin-Rinn Water Management Unit Action Plan; and

County Longford Heritage Plan 2015-2021.


The above plans have been assessed in accordance with Article 6(3) of the Habitats Directive

and Part XAB of the Planning and Development Act, 2000, and are not envisaged to result in

significant effects on the integrity of the Natura 2000 network.

Given the Cullyfad WwTP does not have the potential to impact ‘alone’ on any Natura 2000 site,

there is no potential for the WwTP discharge to contribute to any cumulative impacts on any

Natura 2000 site.

Screening Assessment Table 4.0 provides a summary of the likely significant impact of the current waste water

discharge on the conservation objectives of the Natura 2000 sites potentially linked to the

Cullyfad WwTP as identified in Table 2.0 and Table 3.0


Table 4.0: Potential Significant Impacts on Natura 2000 sites from the Cullyfad Waste Water Discharge

Site Name Direct Impacts

Indirect/ Secondary

Resource Requirements (Drinking Water Abstraction Etc.)

Emissions (Disposal to Land, Water or Air)

Excavation Requirements

Transportation Requirements

Duration of Construction, Operation, Decommissioning

Brown Bog SAC No impact on qualifying interest

No impact on qualifying interest






Lough Forbes Complex

SAC








Ardagullion Bog SAC No impact on qualifying interest







Clooneen Bog SAC No impact on qualifying interest







Ballykenny-Fisherstown

Bog SPA








Glen Lough SPA No impact on qualifying interest








Likely Changes to the Natura 2000 Site(s)

The likely changes that will arise from the Cullyfad waste water discharge have been examined

in the context of a number of factors that could potentially affect the integrity of the identified

Natura 2000 Sites. Overall, it has been found that the current waste water discharge will not

affect the integrity of the identified Natura 2000 Sites.

Table 5.0: Likely Affect on Natura 2000 Sites

Site Name Reduction

of Habitat

Area

Disturbance

to Key

Species

Habitat or

Species

Fragmentation

Reduction

in

Species

Density

Changes in Key

Indicators of

Conservation

Value (Water

Quality Etc.)

Climate

Change

Brown Bog SAC None None None None None None

Lough Forbes Complex

SAC

None None None None None None

Ardagullion Bog SAC None None None None None None

Clooneen Bog SAC None None None None None None

Ballykenny-Fisherstown

Bog SPA

None None None None None None

Glen Lough SPA None None None None None None

Elements of the Project where the Impacts are Likely to be Significant

No elements of the current waste water discharge are likely to cause significant impacts on

NATURA 2000 Sites.


Screening Conclusions and

Statement

The likely impacts that will arise from the current waste water discharge have been examined in

the context of a number of factors that could potentially affect the integrity of the Natura 2000

network. None of the sites within 15km of the discharge location will be adversely affected. A

finding of No Significant Effects Matrix has been completed and is presented in next section of

this Screening Statement.

On the basis of the findings of this Screening for Appropriate Assessment of Natura 2000 Sites, it

is concluded that the current waste water discharge from the Cullyfad WwTP will not have a

significant effect on the Natura 2000 network and a Stage 2 Appropriate Assessment is not

required.


Finding of No Significant Effects

Report Matrix

Name of project or plan Cullyfad WwTP CoA Application

Name and location of Natura 2000 site Brown Bog SAC

Lough Forbes Complex SAC

Ardagullion Bog SAC

Clooneen Bog SAC

Ballykenny-Fisherstown Bog SPA

Glen Lough SPA

Description of the project or plan Cullyfad WwTP discharging to ground

Is the project or plan directly connected

with or necessary to the management

of the site?

No

Are there other projects or plans that

together with the project or plan being

assessed could affect the site?

No

Describe how the project or plan (alone

or in combination) is likely to affect the

European Site(s).

The WwTP discharges poor-quality effluent to the

Longford-Ballinalee ground waterbody. As described

above the ground waterbody and nearby Camlin River

are at Good WFD status.

Of the six Natura 2000 sites identified within 15km of the

discharge point, none are located within the Longford-

Ballinalee ground waterbody. The nearest Natura 2000

site is located over 8km to the west of the Cullyfad

WwTP.

Explain why these effects are not

considered significant.

While these remote SACs support habitats with possible

groundwater connections (lakes and bogs), due to their

distance from Cullyfad and their location outside of the

Longford-Ballinalee ground waterbody, they do not have

the potential to be impacted by the discharge. Any

possible links to the Camlin River have not resulted in

any impact on the water quality of the river, which is at

high status in terms of biology upstream and

downstream of the Cullyfad agglomeration.

Consequently, surface water connected sites

downstream (Lough Forbes SAC and Ballykenny-

Fisherstown SPA) do not have the potential to be

impacted via this pathway.

List of agencies consulted: provide N/A


contact name and telephone or e-mail

address.

Response to consultation. N/A

Data Collected to Carry Out the Assessment

Who carried out the assessment? Qualified Ecologist, Irish Water

Sources of data NPWS database;

EPA database;

WFD Ireland database; and

Information from Irish Water.

Level of assessment completed Desktop and Field walkover survey

Where can the full results of the

assessment be accessed and viewed?

EPA

Overall Conclusion Stage 1 Screening indicates that the Cullyfad WwTP

discharge will not have a significant negative impact on the

Natura 2000 network. Therefore, a Stage 2 'Appropriate

Assessment' under Article 6(3) of the Habitats Directive

92/43/EEC is not required.

SECTION G – PROGRAMME OF IMPROVEMENTS

This section not applicable, this is a new application