River Boyne Water Quality Management Plan - EPA

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River Boynr Walcr Qualih. Manngrmrnl PlanAppendix 6 contains results of sampling and analysis of effluent at Bailieboro Foods, Virginia MilkProducts and Wellman International, all in Co. Cavan. Recent results show:-* Bailieboro Foods ; results are generally reasonable, with some failures and one notable verypoor ef/luent (11/4/95). The cooling waste efjlzrent gualiw is generally low in organic andnutrient load.Virginia Milk Products ; efjluent analysis indicates cl very high quality discharge with loworganic loadvWellman International ; he data shows a reosonable egzrent, with sonze inconsistency andoccasional elevated BOD and suspended solids co~~centrations4.9 Storm Sewer Overflows and Otlrer IssuesApart frcm treatment plant effluents, consideration is required to be given to storm sewer overflowsfrofir combined systems. Most urban developments in excess of 25 years old are drained on acombined system with both storm and foul discharges collected in a common sewer network. In suchsystems, it has been the practice to provide overflows to relieve fhe hydraalic loading in times ofrainfall. This practice can give rise to significant pollution in a "&ber of respects:-Bacteriolog~cal impact, related ro the vo&&z@%f.\discharge-~*\\~\1"-UX c/11111no1ria discharges 11,liich cat $se to co~icentrcrtio~u ivhich result it? toxic cocclitionsforfish lfe.C\-3%.* ~Hyclrogen Sulphide concen@tions can be discharged at the outset of a stornz, when settledorgunic Inarter is re-suspd;tded in sewers. R?is is extremely toxic in receiving waters and isd~@ctrlt to detect, being oxidised very quick!vFor inspection purposes only.Consent of copyright owner required for any other use.~Vurrient loads are carried over in the discharge spill in both soluble and parriculate formwhich may contribzrte to enrichtnent ofbed sedimentsSediment deposits confainiirg high organic loading can be discharged at overflows restrlringin detrintental environmental and aesthetic inlpactWhere i~~dusnial wastes are present in the sewer, metals and other foxins can be dischargedEPA Export 26-07-2013:17:27:00
River Boync Water Quality Managrmcnt PlanCriteria for combined sewer overflows have been evolved by the Department of the Environmentwhich are regarded as complying with the Urban Wastewater Treatment Directive. These criteriainclude the following:-* A minimum overflow seming below which overflows will not occur. This is normallyexpressed as a multiple of the dry weatherflow (DWF) ond is typically in the order of 6-7.Where high strength indzrstriol eflzrents are discharged to the sewer system, the settingswould require to be adjusted accordinglyThe type of storm overflow structure should be such as to ensure eflcient hydraulic controland solids separation. Guidelines for such structures are contained in the WRC Guideline3(UK), ref: ER 304 EThe locations of overflow discharge points should be discreetly located and should haveeflective control offloating debris to avoid aesthetic nuisanceA dilution standardshould be applied which will ensure a maximzrm BOD lir~iif in the river of2Omg/l and ideally IOmg/l. The use of storage and recycli~tg can be used to control spillfrequency and this is particularly appropriate for bathing ~ecreotionol use waters (4, 8 or16 times per year)Consideration should be given topreventing 03 1 spills during 'yrst flush " conditions.This is usually achieved by ensuring that ov&d .... .. ill izof occur withinq\ ,-"the time ofco17centration of the sewer n~&@. During the early period of the storm, sewagestrengths can increase considerably q$@iment and slbne is re-suspended into the flow.Afrerwards, the cortcentrations teIid;l'-&all considernblyC.' ,i:.a\.LSignifcant overflows in the cat!&& should be nronitored tuing alrtotnaric recordingequipment to nieasure spill&$uency and duration and with provision for automaticc'-sampli~igFor inspection purposes only.Consent of copyright owner required for any other use.The foregoing criteria are applied to overflows from combined or partially combined sewer systemsand to similar overflows from pumping stations and at the inlet to treatment plants. Separate stormdrainage systems can also be contaminated to a significant extent due to organic material washed intothe sewers and mis-connections, particularly from dishwasher and washing machine discharges.These issues require policing to ensure that they are satisfactory.Storm drainage systems for petrol stations and other areas where oil spillages are likely, shouldalways be fitted with oil traps. In sensitive receiving waters, provision of oil and grit traps might alsobe considered on the outlets from road drainage systems, etc.EPA Export 26-07-2013:17:27:00
Page 1 and 2: RIVER BOYNEWATER QUALITY MANAGEMENT
Page 3 and 4: River Boync Warcr Qualiry Managemen
Page 5 and 6: List of FiguresFigure No. 1Figure N
Page 7 and 8: ACKNOWLEDGEMENTS-Re assistance of t
Page 9 and 10: Kivrr UO~IIC Water QualiQ hlanagcnr
Page 11 and 12: River Boynr Water Quality Managemen
Page 13 and 14: River Boyne Water Quality Mnnagrmrn
Page 15 and 16: 2.0 Boyne Catchment - Water Resourc
Page 17 and 18: River Boynr \Vater Quality Managrme
Page 19 and 20: Rivrr Bognr Walrr Quality Alanngrmr
Page 21 and 22: River Boync \\'alrr Quality hlnnrge
Page 23 and 24: 2.5 LakesLakes within a river syste
Page 25 and 26: llivur ooync baler Uu.~~ty iilrnngt
Page 27 and 28: River Boync Water Quality hlanagrmc
Page 29 and 30: Rivtr Boynr Waler Quality Mnnagcmcn
Page 31 and 32: Rircr Boyne Wntcr Quality hlrnagcmt
Page 33 and 34: River Baync Walrr Quvlily hl~nrgrmc
Page 35: River Boynt Walrr Quality Mansgrmmt
Page 39 and 40: River Bovnc Water Ouslilv Manaermmt
Page 41 and 42: TAULE -1.1 IUOYNE WATER QUALITY - N
Page 43 and 44: River Bovnc Wnlrr Oualihl Manrecmcn
Page 45 and 46: River Boync WarcrQuality hlanagamen
Page 47 and 48: For inspection purposes only.Consen
Page 49 and 50: River Boynr Wnlrr Quality Managcmmt
Page 51 and 52: River Blnckwnter (KeNs) ; /his rive
Page 53 and 54: River Boyne Water Quality Managmml
Page 55 and 56: River Boync Walrr Qunliiy nlanagrmr
Page 57 and 58: River Boyne Watcr Quslily Msnagrmen
Page 59 and 60: ~~p ~-~~~-River Boync Wvlcr Qurlily
Page 61 and 62: River Buyne Walcr Quvlily Man:~grmc
Page 63 and 64: odn-m~6vg . S ~ "c+ ?oe02Sma?yr,0 2
Page 65 and 66: TABLE 5.31 : RIVER DEEL - PHYSICO -
Page 67 and 68: River aoynr Water Quality winnagcmc
Page 69 and 70: Rivcr Roynr Water Qunlily hlanagrnu
Page 71 and 72: River Uoyne Wntrr Qvalily blsnugrnm
Page 73 and 74: River Boynr Wnar Qunlily Managemrnr
Page 75 and 76: River Boync Water Qualiiy Managemm1
Page 77 and 78: River Boynr Water Quality Msnagrmmt
Page 79 and 80: Rivcr Boync Walcr Quality Monagemmt
Page 81 and 82: River Boyne : Navan to BroadboyneMa
Page 83 and 84: Rivcr Boync Water Quality Uanagemml
Page 85 and 86: 6.0 Boyne Catchment - Water Quality
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River Boynr Wnlrr Quality Manrgcmrn
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River Boync Water Quality Mln~gelnc
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River Boync Water Quality hlrnsgrmc
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River Boynr Water Quslily blsnsgcmm
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For inspection purposes only.Consen
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River Boyne Water Quality Management Plan - EPA

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