21. Schedule of Environmental Commitments...A9 Dualling Northern Section (Dalraddy to Inverness) A9 Dualling Tomatin to Moy Stage 3 Environmental Statement A9P12-AMJ-EGN-Z_ZZZZZ_ZZ-RP-EN-0026

A9 Dualling Northern Section (Dalraddy to Inverness)A9 Dualling Tomatin to Moy Stage 3 Environmental Statement

A9P12-AMJ-EGN-Z_ZZZZZ_ZZ-RP-EN-0026 21-1

21. Schedule of Environmental Commitments

21.1. Introduction21.1.1. This chapter provides a summary of the mitigation measures identified in the

Environmental Statement for implementation during design, prior to construction, duringconstruction and/or during operation of the Proposed Scheme.

21.1.2. The Schedule of Environmental Commitments will be incorporated into the worksconstruction contract documents and the appointed Contractor will be obliged to adhereto these requirements throughout the contract period. The construction commitmentswill be addressed through the Construction Environmental Management Plan (CEMP).

21.1.3. The measures are presented in the Schedule of Environmental Commitments tablesbelow, with each table including the following information:

· Mitigation Measure Reference.

· Approximate Location.

· Timing of Measure.

· Mitigation Measure Description.

· Aim of the Measure.

· Any Specific Approvals or Consultation.



Table 21.1: General Standard Construction Mitigation

MitigationItem

ApproximateChainage/Location

Timing ofMeasure

Description MitigationPurpose/Objective

Specific Consultation orApproval Required

Standard A9 MitigationSMC-S1 Throughout

Proposed SchemePre-Construction&Construction

A Construction Environmental Management Plan(CEMP) will be prepared by the Contractor. TheCEMP will set out how the Contractor intends tooperate the construction site, includingconstruction-related mitigation measuresidentified below in Tables 21.2 to 21.11. Therelevant section(s) of the CEMP will be in placeprior to the start of construction work.The CEMP will include, but not be limited to,subsidiary plans relating to: agricultural soils,geology and land contamination; surface waterand groundwater (including a Flood Responseand Pollution Incident Response Plan); ecology(including specific Species and HabitatManagement Plans); landscape, culturalheritage, air quality and noise and vibration.

To provide a frameworkfor the implementation ofconstruction activities inaccordance with theenvironmentalcommitments andmitigation measures in theES. It will be developedand evolve to avoid,reduce or mitigateconstruction impacts onthe environment and thesurrounding community.

Consultation with therelevant local authorities,other statutory bodies andregulatory authorities (Referto Tables 21.2-21.11).

SMC-S2 ThroughoutProposed Scheme

Pre-Construction&Construction

Prior to construction an EnvironmentalCoordinator and team of suitably qualifiedEnvironmental Clerk of Works (EnvCoW) (i.e.professionally qualified in a relevantenvironmental discipline) will be appointed bythe Contractor. The EnvCoW(s) will report to theEnvironmental Coordinator and be present onsite, as required, during the construction periodto monitor the implementation of the mitigationmeasures identified and ensure that activitiesare carried out in such a manner to prevent orreduce impacts on the environment.

To monitor theimplementation of themitigation measuresidentified and ensure thatactivities are carried out insuch a manner to preventor reduce impacts on theenvironment.

Approval by TransportScotland.



Throughout the construction period theContractor will, as required, contribute towardsthe overall communications strategy for the A9Dualling Programme.

To inform stakeholdersand consultees throughthe construction period.

Consultation with therelevant local authorities,other statutory bodies andregulatory authorities,community councils and



MitigationItem


Timing ofMeasure


Specific Consultation orApproval Required

As part of this the Contractor will appoint aCommunity Liaison Officer supported by aliaison team as necessary who will:

· liaise with the following: relevant localauthorities; other statutory bodies andregulatory authorities; community councilsand relevant community groups; andbusinesses and residents in localcommunities affected by the constructionworks;

· notify occupiers of nearby properties aminimum of two weeks in advance of thenature and anticipated duration of plannedconstruction works that may affect them;

· support the production of projectcommunications such as the project websiteand newsletters; and

· establish a dedicated freephone telephonehelpline together with a dedicated emailaddress and postal address for enquiries andcomplaints during the construction phase. Therelevant contact numbers, email and postaladdresses will as a minimum be displayed onsigns around the construction site and will bepublished on the project website. Enquiriesand complaints will be logged in a register andappropriate action will be taken in response toany complaints.

relevant community groups,and businesses andresidents in localcommunities affected by theconstruction works


Construction The Contractor will ensure that all site workersreceive adequate training relevant to their roleprior to working on the construction site,including specific environmental projectinductions and ‘toolbox talks’ as required.

To ensure site workersare aware of best practiceconstruction methods,mitigation measures andhow they areimplemented.

None required



Table 21.2: People and Communities – Community and Private Assets

MitigationItem


Timing ofMeasure


SpecificConsultation orApproval Required

Standard A9 MitigationSMC-CP1 Throughout


Access to/from residential, commercial and industrialand agricultural, forestry and sporting assets will bemaintained throughout the construction period bymeans of signed diversions, where necessary. Theestimated duration and location of these diversions willbe communicated to affected parties, as required,before they are put in place.

To maintain access to/fromresidential, commercial andindustrial and agricultural,forestry and sporting assets

None required

SMC-CP2 ThroughoutProposed Scheme

Construction&Post-Construction

Existing access arrangements to agricultural andforestry land out-with the land made available (LMA)boundary will not be prevented by the constructionworks during or post construction, unless alternativeaccess is provided for in the Road Orders.

To maintain access to/fromresidential, commercial andagricultural/forestry land.

None required


Pre-Construction

Consultation with affected landowners and occupierswill be undertaken on the location and timing ofplanned construction works to reduce disturbance,where practicable, taking into account the overallconstruction programme.

To reduce disturbance onaffected landowners.

Consultation withaffected landownersand occupiers

SMC-CP4 All agricultural land Pre-Construction

Notice of intention to commence construction work willbe provided to owners and occupiers of agriculturalland adjacent to the Proposed Scheme before workscommence.

To ensure owners andoccupiers of agriculturalland adjacent to theProposed Scheme areinformed of the intention tocommence constructionwork prior to workscommencing.

None required

SMC-CP5 All agricultural land Construction Where practicable, temporary construction compoundsthat are required out-with the LMA boundary will not besited on prime agricultural land or on areas ofwoodland and forestry.

To reduce potential impactsarising from temporaryconstruction compounds onprime agricultural land or onareas of woodland andforestry.

None required



MitigationItem


Timing ofMeasure



SMC-CP6 All agricultural land Construction Where appropriate, temporary fences will be providedduring construction for the health and safety of thepublic and animals and to avoid trespass. Whererequired, fencing of working areas will be to a standardadequate for excluding any livestock kept on adjoiningland. Access by non-authorised personnel will not bepermitted, unless prior permission is granted by thePrincipal Contractor(s).

For the health and safety ofthe public and animals andto avoid trespass.

None required

SMC-CP7 All agricultural land Construction Where boundary features (e.g. fences, walls andhedges) require temporary or permanent alteration toallow construction, these will be reinstated withappropriate materials to provide a secure boundary.

To provide a secureboundary and reducedisruption to agriculture.

None required


Construction Soil resources will be managed in accordance with the‘Construction Code of Practice for the Sustainable Useof Soils on Construction Sites’ (Defra, 2009) to ensurethat soil mitigation measures are fully implementedand soil resources are protected. This will include thecareful excavation, storage and replacement of topsoiland subsoil.

To ensure that soilmitigation measures arefully implemented and soilresources are protected

None required

SMC-CP9 All agricultural land Construction Reasonable precautions will be taken duringconstruction to avoid the spreading of soil-borne pestsand diseases; animal and crop diseases; tree pestsand diseases; and invasive species. A biosecurityprotocol will be developed by the Contractor inconsultation with the Animal and Plant Health Agency,the Scottish Government’s Environment and ForestryDirectorate and the Scottish Government’s Agriculture,Food and Rural Communities Directorate, takingcognisance of relevant UK and Scottish Governmentbiosecurity guidance.

To avoid the spreading ofsoil-borne pests anddiseases; animal and cropdiseases; tree pests anddiseases; and invasivespecies.

Consultation with theAnimal and PlantHealth Agency, theScottishGovernment’sEnvironment andForestry Directorateand the ScottishGovernment’sAgriculture, Food andRural CommunitiesDirectorate

SMC-CP10

ThroughoutProposed Scheme

Pre-Construction

Pre-construction drainage surveys will be undertakento reduce the likelihood of damage or disturbance to

To reduce the likelihood ofdamage or disturbance tofield and forestry drainage




MitigationItem


Timing ofMeasure



field and forestry drainage systems duringconstruction.Where required, the integrity of the drainage systemwill be secured in advance of construction.Repairing and reinstatement of drains affected byconstruction will be agreed with thelandowner/occupier to ensure that land capability ismaintained and the risk of flooding is not exacerbated.

systems duringconstruction.

SMC-CP11


Pre-Construction

Water supplies for livestock will be identified pre-construction and where supplies are lost or access iscompromised by any construction works, temporaryand/or permanent alternative supplies will be providedas agreed with the landowner/occupier.

To reduce disruption tolandowners/occupiers.


SMC-CP12


Post-Construction

LMA that is declared surplus following completion ofconstruction of the Proposed Scheme (includingredundant road pavement and/or access tracks) will beoffered back to former owners or their successors inaccordance with the Crichel Down Rules.

To return surplus land toformer owners or theirsuccessors in accordancewith the Crichel DownRules.


SMC-CP13


Construction Sporting or fishing rights which exist within workingareas may not be accessible during the constructionperiod. Where there are sporting or fishing rightsadjacent to the working area, reasonable endeavourswill be taken to minimise interference or enjoyment ofthem while recognising the primary objective tomaintain a safe working environment for bothcontractors and users of the land and water.

To reduce interference orenjoyment of sport/fishingwhile maintaining a safeworking environment forboth contractors and usersof the land and water.

None required

SMC-CP14


Pre-Construction

Where stands of trees are to be affected anappropriate arboricultural and/or windthrowassessment will be undertaken pre-construction andappropriate mitigation employed for the purposes ofsafety of land and infrastructure.

To address safety risk toland within the ProposedScheme and reduceimpacts to forestry.

None required



MitigationItem


Timing ofMeasure



SMC-CP15


Post-Construction

On completion of works, any land required temporarilyfor construction works will be reinstated as far aspracticable. A photographic and video survey is to beundertaken of any land to be returned to agriculture, toensure all land is restored as near to its original stateas is reasonably practicable.

To ensure appropriaterestoration of land followingcompletion of ProposedScheme.

None required

n/a (note) n/a n/a Further to the above, the mitigation item W11 detailedin Table 21.5 (Road Drainage and WaterEnvironment), also applies to avoiding effects to watersupplies.

To ensure water suppliesare maintained.

n/a (note)

Project Specific MitigationP12-CP16 Throughout

Proposed SchemePre-Construction,Construction& Post-Construction

Identification of land drains/drainage patterns andwater supply prior to construction and measuresapplied for reinstatement where these are affected bythe proposed works.Please note specific mitigation item P12-G17 fromTable 21.4 which relates to drainage at DalmagarryFarm.

To ensure that existing landdrainage patterns and watersupply are maintained.

Consultation withlandowners.

P12-CP17 ThroughoutProposed Scheme

Pre-Construction,Construction& Post-Construction

Planting of new areas of woodland equivalent to areasbeing cleared as far as practicable.Please note mitigation item P12-LV23 in relation tolimiting loss of woodland.

To limit/offset removal oftrees across the ProposedScheme.

None required

Table 21.3: People and Communities – Effects on All Travellers

MitigationItem


Timing ofMeasure

Description Mitigation Purpose/Objective Specific Consultationor Approval Required

Standard A9 MitigationSMC-AT1 Throughout

Proposed SchemeConstruction As far as reasonably practicable, the

construction programme will take intoTo minimise length of closuresor restrictions of access forNMUs.

None required



MitigationItem


Timing ofMeasure


account the need to minimise the length ofclosures or restrictions of access for NMUs.

SMC-AT2 ThroughoutProposed Scheme

Construction Where practicable, temporary diversionroutes and/or assisted crossings will beprovided to maintain safe access for NMUsthroughout the construction works. Anyclosure or re-routing of routes used byNMUs would take cognisance of the ‘Roadsfor All: Good Practice Guides for Roads’(Transport Scotland, 2013). These will beagreed in advance with the relevant localauthorities and will be clearly indicated withsignage as appropriate.

To maintain safe access forNMUs throughout theconstruction works.

Any closures will beagreed with TransportScotland (Rights ofWay), CairngormNational Park Authorityand/or The HighlandCouncil (local and corepaths).

SMC-AT3 ch13900 to ch14100 Pre-Construction

Where required and practicable, bus stopswill be relocated prior to construction with asafe access route provided for NMUs. Thiswill be undertaken in consultation with therelevant Roads Authority and publictransport provider.

To maintain access to PublicTransport facilities.

Consultation with therelevant RoadsAuthority and publictransport provider


Construction The Contractor will produce a trafficmanagement plan that will includemeasures to avoid or reduce disruption tothe road traffic, and in accordance with theTraffic Signs Manual (Department ofTransport, 2009). The plan will includeconsideration of the timing of works, thelocation of haul roads to reduce site trafficon the public roads and a well maintainedtraffic management system with sweepingof roads to reduce construction debris onthe carriageway.

To avoid or reduce disruption tothe road traffic.

None required


Construction Reasonable precautions will be taken by theContractor to avoid or reduce road closures.No A9 lane closures will be permitted duringpeak hours (Mon to Fri) except in

To avoid or reduce roadclosures and resultingdisruptions to traffic.

Approval required formTransport Scotland inthe event of required



MitigationItem


Timing ofMeasure


exceptional circumstances which areapproved by Transport Scotland.

A9 lane closures duringpeak hours.


Construction Road diversions will be clearly indicatedwith road markings and signage asappropriate. Any road closures will benotified in advance through road signageand appropriate signage will be provided forthe duration of the closure.

To reduce disruption to the roadusers.

None required


Construction Appropriate lighting will be provided duringany necessary night-time working, takinginto account the requirements of MitigationItems SMC-E10 and SMC-LV4 (see Tables21.6 and 21.7).

To mitigate potential impacts ondriver stress such as fear ofpotential accidents due toinadequate lighting provision.

None required

SMC-AT8 NMU facilities Construction General principles for maintaining andimproving access for NMUs include:

· The requirements of the Equality Act2010 and ‘Roads for All: Good PracticeGuides for Roads’ (Transport Scotland,2013) shall be incorporated into theProposed Scheme wherever practicable;e.g. any bridges, ramps or footpaths shalltake into account potential barriers todisabled people such as the gradient orsurfacing.

· Surfacing of any new paths includingalongside roads shall be considered withregard to the type of user and shouldcomply with current standards.

· Safety of paths will be improved byproviding barriers to segregate trafficfrom paths in accordance with the RoadRestraints Risk Assessment Process.

New cycleways/footpaths shall use non-frost susceptible materials to reduce risk ofdegradation. Where use of non-frost

To maintain access for NMUsand provide appropriate facilitiesbased on use and improveaccess for NMUs.

None required



MitigationItem


Timing ofMeasure


susceptible materials is not appropriate, amaintenance regime will be developed toavoid degradation of NMU paths.

n/a (note) n/a n/a Further to the above, the mitigation itemsdetailed in Table 21.7 (Landscape andVisual), Table 21.9 (Air Quality) and Table21.10 (Noise and Vibration) will reduce theadverse amenity impacts on NMU andvehicle travellers during construction.

To reduce the adverse amenityimpacts on NMU and vehicletravellers during construction.

n/a (note)

Project Specific MitigationP12-AT9 Throughout

Proposed SchemeDesign, Pre-Construction,Constructionand Operation

NMU route signage for NCN7 and alongNMU routes where necessary.

To inform NMUs and motorisedusers of the locations ofpedestrian, cycle and equestrianonly routes, to direct NCN7users and warn of pedestrianscrossing, accompanied horses,and other hazards.

Consultation withSUSTRANS, TheHighland Council,Scotways and BritishHorse Society

Table 21.4: Geology, Soils, Contaminated Land and Groundwater

MitigationItem


Timing ofMeasure



Standard A9 MitigationSMC-G1 Throughout Proposed

SchemePre-Construction

Prior to construction, consultation will be undertaken withthe relevant local authorities and SEPA regarding works inrelation to land affected by contamination to support theobligations set out in ‘Planning Advice Note 33:Development of Contaminated Land’ (ScottishGovernment, 2000). Any remedial action undertaken inrelation to land affected by contamination will be carried outunder the appropriate remediation licencing.

To reduce impactsfrom contaminatedland sources.

Consultation withThe HighlandCouncil and SEPA.

SMC-G2 Throughout ProposedScheme

Pre-Construction

Prior to construction and where potential contamination hasbeen identified, further site investigations sufficient to

To determine theextent and type of

None required



MitigationItem


Timing ofMeasure



determine the extent and type of contaminants present willbe undertaken, as necessary, to inform identification ofappropriate construction methods and any additionalmitigation.

contaminantspresent and toinform identificationof appropriateconstructionmethods and anyadditionalmitigation.


Pre-Construction &Construction

Prior to construction, appropriate health and safety andwaste management procedures for working with potentiallycontaminated soils will be established. Waste managementprocedures will include, but are not limited to: WasteManagement Licence Regulations 1994 (as amended byWaste management licensing Amendment (Scotland)Regulations 2003), HSE Guideline Note MS13 Asbestos1988 and the Health and Safety Commission ApprovedCode of Practice and Guidance Note. These procedureswill be implemented as appropriate during construction.

To ensureappropriate healthand safety andwaste managementprocedures forworking withpotentiallycontaminated soilsare followed.

None required


Construction &Operation

Risks to construction and maintenance staff workingwith/near contaminated land will be mitigated by theimplementation of Mitigation Item G3 in combination withthe adoption of appropriate systems of work, includingpersonal protective equipment (PPE) as a last resort. In theevent that unrecorded contamination is encountered, worksshould be stopped and the working procedures reassessedto confirm the working methods remain appropriate.

To reduce impactsfrom contaminatedland sources andconfirm the safetyof construction andmaintenance staff.

None required


Construction Appropriate training of personnel involved in earthworksactivities to implement a watching brief to identify potentialpresence of previously unidentified contamination.

To identify potentialpresence ofpreviouslyunidentifiedcontamination.

None required



Where required, landowner consultation and site visits willbe undertaken to confirm the location and network of septictanks. Where septic tanks are located within the LMA they

To mitigate the lossof any septic tanks.

Approval fromlandowners



MitigationItem


Timing ofMeasure



will be relocated and/or rebuilt subject to discussion andagreement with the affected landowner(s).


Construction The Contractor will adhere to appropriate guidanceincluding the ‘Piling and Penetrative Ground ImprovementMethods on Land Affected by Contamination: Guidance onPollution Prevention, National Groundwater andContaminated Land Centre Report NC/99/77’.

To prevent crosscontamination andpollution from pilingworks undertakenin areas of landaffected bycontamination.

None required


Construction Prior to disposal, soils will be assessed in line with the‘Waste Classification: Guidance on the Classification andAssessment of Waste’ (Technical Guidance WM3) (NaturalResources Wales, SEPA, Northern Ireland EnvironmentAgency, Environment Agency, May 2015) to determinewhether they are hazardous or non-hazardous.

To determinewhether disposedsoils are hazardousor non-hazardous.

None required


Pre-Construction

To maximise the reuse of site-won materials on-site (andminimise the need for disposal of waste in line with theprinciples of the “Waste Hierarchy”) whilst ensuring that norisks are posed to human health nor the water environmenta soil reuse assessment will be undertaken prior toconstruction. The soil reuse assessment will identify anypotential risks posed to both human health and the waterenvironment from potentially contaminated soils reusedthroughout the Proposed Scheme.

To identify anypotential risksposed to humanhealth and thewater environment.In addition, thismitigation itemwould maximise re-use of site-wonmaterials on-siteand minimise theneed for disposal ofwaste in line withthe principles of the“Waste Hierarchy”through re-use ofexcavation arisings(refer to MitigationItem SMC-M3).

None required



MitigationItem


Timing ofMeasure




Construction If peat is encountered during construction, it will beextracted, excavated, stored, with any off-site removalundertaken with cognisance of ‘Development on Peatland:Guidance on the Assessment of Peat Volumes, Reuse ofExcavated Peat and the Minimisation of Waste’ (ScottishRenewables and SEPA, 2012) and will comply withrelevant waste management practices under The WasteManagement Licensing (Scotland) Regulations 2011.

To comply withrelevant wastemanagementpractices underThe WasteManagementLicensing(Scotland)Regulations 2011and reduce impactson peatlands.

Consultation withSEPA



Where concrete materials are proposed to be used,appropriate guidance such as ‘Building ResearchEstablishment (BRE) SD1:2005’ and ‘British Standard (BS)BS8500’ should be followed to ensure that groundconditions are appropriate for the use of concrete at eachgiven location.

To ensure thatground conditionsare appropriate forthe use of concreteat each givenlocation.

None required

SMC-G12 Throughout ProposedScheme (wherenecessary)

Pre-Construction,Construction &Post-Construction

Where potential pollutant pathways for ground gas havebeen identified, a ground gas monitoring program will bedeveloped prior to construction in adherence to ‘CIRIA 665Assessing Risks Posed by Hazardous Ground Gases toBuildings’. This will include an assessment of gassingissues following receipt of additional ground gas monitoringresults at selected boreholes.Appropriate working methods will be developed andadopted during below ground site construction works(including piling works and excavations). This shouldinclude as a minimum, gas monitoring undertaken prior toany entry into excavations, confined spaces or belowground structures and use of PPE as a last resort.If significant ground gas issues are identified duringconstruction, further post construction monitoring will beundertaken and/or appropriate gas protection measures willbe incorporated into the final design.

To mitigate againstpotential impactson human healthduring constructionand Off SiteReceptors (Localresidents, transienttraffic (foot, roadand rail traffic) inthe surroundingarea) due toground gas.

None required



MitigationItem


Timing ofMeasure




Construction Unless it can be demonstrated by the Contractor via aQuantitative Risk Assessment that no water quality impactswill occur due to leaching from SuDS features, operationalSuDS features should be lined.Any potential water quality impacts due to leaching fromSuDS features will be addressed through the CAR process.

To mitigate againstpotential impactson water qualitydue to leachingfrom SuDSfeatures.



Construction Where required, storage of excavated soils and madeground will be minimised on site (spatially and in duration)and all storage areas will be appropriately lined, withadequate drainage management in place.

To ensure that nopolluted waterpercolates into theground orcontaminated run-off is generated.

None required


Pre-Construction

Risk assessments will be required before explosives can beused on site.

To minimise orcontrol the impactof blasting onbedrock geology.

None required

n/a (note) n/a n/a Further to the above, the implementation of Mitigation Itemsdetailed in Chapter 11 (Road Drainage and the WaterEnvironment) and the measures detailed in Chapter 16 (AirQuality).

To mitigate thewater pollution riskto groundwater andavoid the creationof a statutorynuisanceassociated withdust and airpollution whenworking withcontaminated land.

n/a

Project Specific Mitigation

P12-G16 Tomatin House &InvereenGroundwaterAbstractions

Pre-Construction,Constructionand Post-Construction

A programme of monitoring (water quality sampling). Thefrequency and duration of sampling and the water qualityparameters to be tested will be agreed with thelandowners/users, SEPA and The Highland Council.

To monitorpotentialconstructionpollution.

Consultation withlandowners/users,SEPA and TheHighland Council



MitigationItem


Timing ofMeasure



P12-G17 Invermoy Design,Construction

The Contractor will:

· accurately locate and map supply lines prior toconstruction;

· take measures to prevent damage to supply lines and toavoid pollution during supply line diversions, excavationsand groundworks;

· provide an alternative water supply if supply lines are tobe temporarily disrupted by the works; and

· consult with the owners/users of the affected privatewater supplies to ensure the effects of any disruption areminimised.

To ensuredisruption to privatewater supplies atInvermoy

Consultation withlandowners/users

P12-G18 Throughout ProposedScheme

Pre-Construction,Construction(whererequired), Post-Construction

The contractor will:

· revisit the Method C assessment for the proposed filterdrains as more detailed GI and groundwater level databecomes available at detailed design;

· should the Method C assessment indicate there is aMedium to High Risk to groundwater, further site specificassessment will be carried out; and

· if it is concluded that groundwater quality impacts arelikely, the proposed filter drains will be lined oralternative appropriate mitigations implemented.

Any potential water quality impacts due to leaching fromSuDS features will be addressed through the CAR process.

To avoid impactson groundwaterquality fromoperational routinerunoff.


P12-G19 Ponds 4 & 5 Pre-Construction

Further ground investigations, groundwater monitoring andassessment will be carried out pre-construction for thosecuttings assessed as having a significant impact ongroundwater levels and flows, namely Cuttings 7, 43, 64,69 and 95. If the impacts are confirmed as significant,additional mitigation measures may be required, such ascontaining, channelling and directing groundwater to thedown gradient side of the cutting, allowing the discharge toinfiltrate back to ground.

To avoid impacts togroundwater flowsand levels.

Consultation withSEPA/SNH



MitigationItem


Timing ofMeasure



The potential volume of groundwater seeping into theabove cuttings will also be considered in relation to thedesign of the cutting drainage and potential groundwaterabstraction CAR licensing.Further investigations will also be carried out in the vicinityof the Lynebeg ponds to fully understand the groundwaterregime in this area, and to inform the engineering design ofthe cuttings and proposed replacement pond.

P12-G20 Throughout ProposedScheme

Pre-Construction,Construction(whererequired), Post-Construction.

To mitigate any effects on GWDTEs:Land clearance and soil stripping should be minimisedwithin the temporary construction areas of the LMA, tominimise loss of GWDTE habitat. Where temporaryconstruction areas are cleared the restoration andlandscaping of these areas should reflect the originaltopography and vegetation as far as is practical toencourage the re-establishment of GWDTE habitats.Pre-construction groundwater monitoring will be carried outat a representative sample of high and moderategroundwater dependency GWDTEs to determine whetherthey are true GWDTEs. This will comprise a minimum often samples over a 6 month period, with at least five takenduring the summer period. As a minimum monitoringshould be carried out in relation to the following GWDTEhabitat polygons: A381, A323, A319, B090, B093, B100,B107, C148, C147, C144, C188, C140, C017, C033, C163,C179, BH05, BH06, BH15, BH22, BH24, BH25, DB_B085,BH15e, JM001, JM011, JM025, JM024, JJ017, JM026,JM027, CC038, CC037, CC034, CC030.Where GWDTEs will be affected by groundwater drawdownin the vicinity of cuttings, any groundwater entering cuttingswill be directed to the down gradient side and allowed toinfiltrate. Where possible the location and frequency ofthese discharges will be designed to replicate the naturalgroundwater flow as closely as possible. This mitigation

To minimise anyeffects onGWDTEs




MitigationItem


Timing ofMeasure



shall apply to the following polygons as a minimum: A066,C183, C184 (two polygons), C185.Where GWDTES are located downslope of proposed roadembankments, permeable fill material will be used in theembankment construction wherever possible, to maintaingroundwater flows. Cross formation drains will be usedwhere practicable to facilitate groundwater through flow.This mitigation shall apply to the following polygons as aminimum: CC034, CC037, CC038.Should a spring issue within the footprint of the scheme thiswill be dealt with using standard construction practice,however the outflow will be located where it is able to feedthe same downslope GWDTE habitat wherever possible.Details of the individual GWDTE habitats where the aboveoutline mitigations are proposed are detailed in TechnicalAppendix A10.3. The precise design mitigation for eachGWDTE will be devised during the detailed design stage.Monitoring during construction to be determined inconsultation with SEPA.Post-construction monitoring will be carried out (a minimumof ten measurements over a twelve month period, for aminimum of three years) until it is demonstrated thatreceptors are not impacted.Should post-construction monitoring reveal residualimpacts, consultation with SEPA will be carried out todetermine feasible mitigation measures.

P12-G21 Throughout theProposed Scheme

Pre-Construction,Construction(whererequired)

It is proposed that all soil and peat excavated as part of theProposed Scheme will be re-used for on-site landscapingpurposes, with no excess peat identified. This shouldcontinue to be the preferred reuse option. Should therefined design identify an excess of peat considerationshould be given to additional reuse options, both onsite andoffsite in preference to disposal. Consultation withlandowners and statutory stakeholders will continue to

To reduce impactson soil and peatloss through peatre-use




MitigationItem


Timing ofMeasure



confirm where peat will be stored and re-used as part of thepre-construction phase.Information on WML requirements should be provided bythe contractor at detailed design stage as part of thedetailed Soil and Peat Management Plan to ensurecompliance for any temporary storage, transportation andre-use of soil and peat on-site.

P12-G22 Throughout theProposed Scheme

Pre-Construction,Construction(whererequired)

Where soil and peat needs to be temporarily stored and/ornaturally dried within the scheme area, pollution preventionrequirements have be considered to avoid impacts tosurface and groundwater bodies and to comply with‘Development on Peatland: Guidance on the Assessmentof Peat Volumes, Reuse of Excavated Peat and theMinimisation of Waste’ (Scottish Renewables and SEPA,2012) and relevant waste management practices underThe Waste Management Licensing (Scotland) Regulations2011. This includes the standard and specific mitigationitems included within this chapter and Chapter 11,including:

· SMC-G10 To comply with relevant waste managementpractices under The Waste Management Licensing(Scotland) Regulations 2011 and reduce impacts onpeatlands;

· SMC-G14 To ensure that no polluted water percolatesinto the ground or contaminated run-off is generated;

· SMC-W4 In relation to construction site runoff andsedimentation, the Contractor will adhere to GPPs/PGGs(SEPA, 2006-2017) and other good practice guidance(Table 11.1); and

· P12-W18 Prior to construction the Contractor shallproduce a Surface Water Management Plan (SWMP) (orsimilar such document) that will be submitted to SEPAfor approval as part of the CAR authorisation process forsite discharges.

To prevent pollutionimpacts on thewater environmentfrom the temporarystorage andhandling of soil andpeat.




Table 21.5: Road Drainage and the Water Environment

MitigationItem


Timing ofMeasure



Standard A9 MitigationSMC-W1 Throughout Proposed

SchemePre-Construction&Construction

The Contractor will comply with the requirements of theWater Environment (Controlled Activities) (Scotland)Regulations 2011 (as amended) (also known as the CARRegulations) in relation to water features which requireengineering work and construction activities. Works withinor adjacent to water features may require a CAR licence,registration or compliance with the General Binding Rules(GBRs). Where required, a CAR application would bemade to SEPA and this would include detailed informationon the proposed activity, the potential impacts to thewater environment, mitigation measures included in thedesign and a detailed construction methodology for allengineering activities.

To mitigateconstructionimpacts on thewater environment.

CAR applicationsrequire approval fromSEPA

SMC-W2 Throughout ProposedScheme


In relation to flood risk the Contractor will implement thefollowing mitigation measures during construction:

· the Flood Response Plan (as part of the CEMP, referto Mitigation Item SMC-S1) will set out the followingmitigation measures to be implemented when workingwithin the functional floodplain (defined here as the0.5% AEP (200-year) flood extent):- routinely check the MET office Weather Warnings

and the SEPA Floodline alert service for potentialstorm events (or snow melt), flood alerts andwarnings relevant to the area of the constructionworks.

- during periods of heavy rainfall or extended periodsof wet weather (in the immediate locality or widerriver catchment) river levels will be monitored using,for example, SEPA Water Level Data when availableor visual inspection of water features. TheContractor will assess any change from base flow

To reduce the riskof flooding impactson constructionworks.

None required



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condition and be familiar with the normal dry weatherflow conditions for the water feature, and be familiarwith the likely hydrological response of the waterfeature to heavy rainfall (in terms of time to peak,likely flood extents) and windows of opportunity torespond should river levels rise.

- should flooding be predicted, works close or withinthe water features should be immediately withdrawn(if practicable) from high risk areas (defined as:within the channel or within the bankfull channelzone - usually the 50% (2-year) AEP flood extent).Works should retreat to above the 10% AEP (10-year) flood extent) with monitoring and alerts forfurther mobilisation outside the functional floodplainshould river levels continue to rise.

· plant and materials will be stored in areas outside thefunctional floodplain where practicable, with the aim fortemporary construction works to be resistant or resilientto flooding impacts, to minimise/prevent movement ordamage during potential flooding events. Where this isnot possible, agreement will be required with theEnvCoW;

· temporary drainage systems will be implemented toalleviate localised surface water flood risk and preventobstruction of existing surface runoff pathways; and

· where practicable, haul routes will be located out of thefunctional floodplain. When in the floodplain stockpilingof material must be carefully controlled with limits to theextent of stockpiling within an area to preventcompartmentalisation of the floodplain and stockpilesshould be away from water feature banks (not within10m of the water feature banks). This is in order to limitfloodplain encroachment, associated increased floodrisk and sediment entering the water feature.



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Pre-Construction,Construction&Post-Construction

The Contractor will implement appropriate controls forconstruction site runoff and sedimentation including:

· avoiding unnecessary stockpiling of materials andexposure of bare surfaces, limiting topsoil stripping andphasing to areas where bulk earthworks areimmediately programmed;

· installation of temporary drainage systems/SuDSsystems (or equivalent) including pre-earthworksdrainage, to reduce potential for contaminated runoff towater features;

· treatment facilities to be scheduled for constructionearly in the programme, to allow settlement andtreatment of any pollutants contained in site runoff andto control the rate of flow before water is dischargedinto a receiving watercourse;

· adherence to CIRIA guidance ‘C648 Control of WaterPollution from Linear Construction Projects’, SEPAguidance ‘WAT-SG-29 Temporary ConstructionMethods’ and relevant sections of ‘BS6031:2009 Codeof Practice for Earthworks’;

· other runoff and erosion control measures to include asappropriate:- use of silt fences, check dams, settlement lagoons,

soakaways and other sediment trap structures;- maintenance and regrading of haulage route

surfaces where issues are encountered with thebreakdown of the existing surface and generation offine sediment;

- provision of wheel washes more than 10m fromwater features and appropriate disposal of dirtywater;

- limit uncontrolled run-off from exposed bare areasand newly paved areas;

To implementappropriatecontrols for siterunoff andsedimentation andreduce impacts onthe waterenvironment.

If flocculants areconsidered necessaryto aid settlement offine suspendedsolids, such as clayparticles, thechemicals used mustfirst be approved bySEPA.Where required,temporary dischargeconsents to beobtained from SEPAthrough the WaterEnvironment(Controlled Activities)(Scotland)Regulations 2011 (asamended).



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- covering and bunding, if required, of soil stockpiles;- provision of peripheral cut-off ditches to intercept

runoff from outside the working area such that itdoes not encroach on the working area;

- regular inspection and monitoring of receiving waterfeatures; and

- any other appropriate measures required followingconsultation/CAR licencing discussions with SEPA.

· temporary discharge consents to be obtained fromSEPA through the Water Environment (ControlledActivities) (Scotland) Regulations 2011 (as amended),where required; and

· rehabilitation of exposed areas (seeding and planting)throughout the construction period as soon as possibleafter the work has been completed.



In relation to in-channel working the Contractor willimplement the following mitigation measures:

· compliance with SEPA Good Practice Guidance suchas ‘WAT-SG-29 Temporary Construction Methods’,‘WAT-SG-25 River Crossings’, ‘WAT-SG-23 BankProtection Rivers and Lochs’ and WAT-SG-28Guidance for Intakes and Outfalls’ and CIRIA guidance‘C689 Culvert Design and Operation’;

· compliance with SEPA PPGs including ‘PPG 1 GeneralGuide to the Prevention of Pollution’, ‘PPG 5 Works orMaintenance on or Near Water’, ‘PPG 6 Working atConstruction or Demolition Sites’.

· in compliance with the Water Environment (ControlledActivities) (Scotland) Regulations 2011 (as amended),prepare construction method statements for any in-channel working, for approval by SEPA;

· compliance with the Water Environment (ControlledActivities) (Scotland) Regulations 2011 (as amended),

To reduce impactson the waterenvironment duringin-channel working.

Method statementsfor any in-channelworking requireapproval by SEPA



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authorisation requirements (applying for licences forrelevant in-channel works in advance of construction);

· undertaking in-channel works during low flow periods(i.e. when flows are at or below the mean average) asfar as practicable to reduce the potential for sedimentrelease and risk of scour and using appropriatemethods to reduce the risk of pollution;

· minimise length of channel disturbed and size ofworking corridor;

· sediment fences or bunds will be used whereappropriate to prevent sediment being washed intowater feature;

· limit the amount of removal of the vegetated ripariancorridor and woodland area retaining vegetated bufferzone wherever possible; and

· limit the amount of tracking along the side ofwatercourses and avoid creation of new flow pathsbetween exposed areas and new or existing channels.


Construction Where channel realignment is proposed the followingmitigation measures will be implemented by theContractor:

· once a new channel is constructed, the flow should,where practicable, be diverted from the existingchannel to the new course under normal/low flowconditions. In addition, diverting flow to a new channelshould be timed to avoid forecast heavy rainfall eventsat the location and higher up in the catchment. Theoptimum time for constructing a new channel, wherepracticable, is in the spring and early summer monthsto allow vegetation establishment to help stabilise thenew channel banks;

· with offline realignments, the flow will be diverted with asteady release of water into the newly constructed

To reduce impactson the waterenvironment wherechannelrealignment isproposed.

None required



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realignment to avoid entrainment of fine sediment orerosion of the new channel; and

· the length of the channel to be realigned will beminimised.

Where realignments result in an increase or decrease ofchannel gradient, the following principles will be appliedby the Contractor:

· an increased gradient within the channel (resulting inhigher stream energies) will require mitigation in theform of energy dissipation, which could include thecreation of a step-pool sequence; boulder bed-checks;plunge pools at culvert outlets; and/or; increasedsinuosity.

· a decrease in gradient within the channel will requiremitigation in the form of the construction of a low flowchannel to minimise the impacts on locally varying flowconditions and reduce the risk of siltation of thechannel.


Construction In relation to refuelling the Contractor will implement thefollowing mitigation measures:

· compliance with the Water Environment (Oil Storage)(Scotland) Regulations 2006 including the provision ofbunded areas of sufficient storage capacity (at least110% of maximum tank capacity) with impervious wallsand floor lining for the storage of fuel, oil andchemicals;

· compliance with SEPA ‘PPG 2 Above Ground OilStorage’;

· appropriate measures, including site security, to avoidspillages (refer to Mitigation Item SMC-W7); and

· compliance with the Pollution Incident Control Plan(refer to Mitigation Item SMC-S1) and SEPA ‘PPG 21

To avoid spillagesand reduce impactson the waterenvironment inrelation torefuelling.

None required



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Pollution Incident Response Planning’ and ‘PPG 22Dealing with Spills’.


Construction In relation to oil/fuel leaks and spillages the Contractor willimplement the following mitigation measures:

· Best Practice Measures associated with storage of oilsand fuel will be followed in compliance with The WaterEnvironment (Oil Storage) (Scotland) Regulations2006, SEPA ‘PPG02 Above Ground Oil Storage’ and‘PPG26 Safe Storage – Drums and Intermediate BulkContainers’;

· stationary plant will be fitted with drip trays and emptiedregularly;

· plant machinery will be properly checked prior to everyuse and maintained when appropriate;

· spillage kits will be stored at key locations on-site;· compliance with the Pollution Incident Control Plan

(refer to Mitigation Item SMC-S1) and SEPA ‘PPG 21Pollution Incident Response Planning’ and ‘PPG 22Dealing with Spills’; and

· where below ground oil storage is proposed, this mustcomply with SEPA’s ‘Code of Practice for Installers,Owners and Operators of Underground Storage Tanks(and Pipelines)’

To reduce impactson the waterenvironment inrelation to oil/fuelleaks and spillages.

None required


Construction In relation to chemical storage, handling and reuse theContractor will implement the following mitigationmeasures:

· compliance with the requirements of SEPA ‘PPG 26Safe Storage – Drums and Intermediate BulkContainers’;

· chemical, fuel and oil storage will be undertaken withina site compound, which will be located on stable

To reduce impactson the waterenvironment inrelation to chemicalstorage, handlingand reuse.

None required



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ground at a low risk of flooding and >10m from anywatercourse;

· chemical, fuel and oil stores will be locked and sited onan impervious base within a secured bund of 110% ofthe storage capacity; and

· pesticides, including herbicides, will only be used ifthere are no alternative practicable measures, and willbe used in accordance with the manufacturer’sinstructions and application rates. Choice of pesticidesshould be those with least harm to the environment(i.e. least toxic and least persistent) suitable for therequired purpose. Pesticide use near watercoursesmust comply with CAR GBR23.


Construction In relation to concrete, cement and grout the Contractorwill implement the following mitigation measures:

· concrete mixing and washing areas willbe located more than 10m from water bodies;- have settlement and re-circulation systems for water

reuse; and- have a contained area for washing out and cleaning

of concrete batching plant or ready-mix lorries.

· wash-water will not be discharged to the waterenvironment and will be disposed of appropriatelyeither to the foul sewer (with permission from ScottishWater), or through containment and disposal to anauthorised site;

· undertaking potentially polluting activities more than10m from surface water features where works specificto a water feature are not required, ensuring nopathways exist between potential sources andreceptors; and

· where concrete pouring is required within 10m of awater feature or over a water feature, appropriate

To reduce impactson the waterenvironment inrelation to concrete,cement and grout.

Permission requiredfrom Scottish Water



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protection will be put in place to prevent spills enteringthe channel (e.g. protective sheeting).

SMC-W10 Site Compound/ Facilities Construction Sewage from site facilities will be disposed ofappropriately either to foul sewer (with the permission ofScottish Water) or appropriate treatment and dischargeagreed with SEPA in advance of construction inaccordance with ‘PPG04 Treatment and Disposal ofSewage’.

To ensure sewagefrom site facilities isdisposed ofappropriately.

Permission requiredfrom Scottish Waterfor disposal to foulsewer or SEPA, inadvance ofconstruction, forappropriate treatmentand discharge to awatercourse


Construction In relation to service diversions and disruptions fromexcavations and ground penetration, including severanceof public and private water supplies through damage toinfrastructure, the Contractor will:

· locate and map all private or public water supply assets(including purchase of Scottish Water asset plans) andother service infrastructure prior to construction;

· take measures to prevent damage to services and toavoid pollution during service diversions, excavationsand ground works; and

· provide an alternative water supply if services are to betemporarily disrupted by the works.

To mitigate servicediversions anddisruptions fromexcavations andground penetration.



Construction For works within areas identified as potentially containingcontaminated land and sediment Best Practice Measureswill be implemented to reduce risk of surface waterpollution to an acceptably low level. This would include,where required:

· further site investigation to determine the level ofcontamination, and

· the installation of temporary treatment facilities toensure protection of water quality and promote flowattenuation during construction.

To reduce risk ofsurface waterpollution from areasidentified aspotentiallycontaminated landto an acceptablylow level.

Details of anytemporary treatmentmeasures to beagreed with SEPAprior tocommencement ofconstruction



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Details of any temporary treatment measures should beagreed with SEPA prior to commencement ofconstruction, following CIRIA guidance including ‘C648Control of Water Pollution from Linear ConstructionProjects: Technical Guidance’, ‘C649 Control of WaterPollution from Linear Construction Projects: Site Guide,‘C753 The SuDS Manual’ and ‘C698 Site Handbook forthe Construction of SuDS’.


Operation In relation to in-channel structures (general) theContractor will implement the following mitigationmeasures:

· SEPA’s Position Statement to support theimplementation of the Water Environment (ControlledActivities) (Scotland) Regulations 2005: WAT-PS-06-02: Culverting of Watercourses (SEPA, 2015d);

· SEPA’s Engineering in the Water Environment GoodPractice Guide: Bank Protection Rivers and Lochs(WAT-SG-23) (SEPA, 2008a);

· SEPA’s Engineering in the Water Environment GoodPractice Guide: Intakes and Outfalls (WAT-SG-28)(SEPA, 2008b); and

· SEPA’s Position Statement to support theimplementation of the Water Environment (ControlledActivities) (Scotland) Regulations 2011: WAT-PS-07-02: Bank Protection (SEPA, 2012c).

· Where bridges, new culverts and culvert extensionsare proposed, the design follows good practiceguidance including CIRIA’s Culvert Design andOperation Guide, C689 (CIRIA, 2010); DMRB HA107/04: Design of Outfall and Culvert Details (TheHighways Agency et al., 2004); and SEPA’s GoodPractice Guide: River Crossings (SEPA, 2010b).

Grey (hard) bank scour protection, at culverts and outfallswill be limited to that absolutely required and

To reduce impactsof in-channelstructures on thewater environment.




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consideration given to alternative options, e.g. none orgreen (soft) bank protection. Requirements for grey bankprotection to control/prevent scour (e.g. rock armour, rip-rap, gabion baskets) at culverts would be limited to thatabsolutely required and options for use of alternativesolutions, such as none or green bank scour protection(e.g. vegetation, geotextile matting) would be preferredwhere practicable.


Operation In relation to outfalls the Contractor will implement thefollowing mitigation:

· The location of the outfalls along the water featureswould be refined within the CPO boundary as part ofthe detailed design. Outfalls have been recommendedto be installed at locations that would not excessivelyalter channel flow and sedimentation patterns. Specificconsiderations include:- design to be compliant with best practice in CIRIA

(2016) and DMRB Volume 4, Section 2, Part 7,Design of Outfall and Culvert Details and guidancein SEPA’s Good Practice Guide: Intakes and Outfalls(SEPA, 2008b);

- directing each outfall downstream to minimiseimpacts to flow patterns;

- the outfall would not project into the channel;- avoid installation of outfalls at locations of known

historical channel migration;- avoid positioned in flow convergence zones or

where there is evidence of active bankerosion/instability;

- directing an outfall away from the banks of a river tominimise any potential risk of erosion (particularly onthe opposite bank); and

To reduce impactsof outfalls on thewater environment.




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- minimising the size/extent of the outfall headwallwhere possible to reduce the potential impact on thebanks.


Operation In relation to culverts the Contractor will implement thefollowing mitigation:

· Detailed design shall mitigate flood risk impactsthrough appropriate hydraulic design of culvertstructures. Flood risk shall be assessed against the0.5%AEP (200-year) plus an allowance for climatechange design flood event. Widening of the ProposedScheme footprint may lead to loss of existing floodplainstorage volume. Detailed design shall mitigate thiswhere required by appropriate provision ofcompensatory storage. Where culvert extension is notpracticable or presents adverse impact on the waterenvironment, appropriately designed replacementculverts may be installed.

· Detailed design shall mitigate impacts on the waterenvironment through appropriate design of culvertstructures and watercourse modifications (e.g.realignments) with respect to fluvial geomorphology,and both riparian and aquatic ecology.

· Detailed design of culverts and associated watercoursemodifications shall incorporate wherever practical:- allowance for the appropriate conveyance of water

and sediment for a range of flows (including at lowflow conditions);

- maintenance of the existing channel gradient toavoid erosion at the head (upstream) or tail(downstream) end of a culvert;

- avoidance of reduction of watercourse lengththrough shortening of watercourse planform;

- minimisation of culvert length;

To reduce impactsof culverts on thewater environment.




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- close alignment of the culvert with the existing waterfeature;

- depressing the invert of culverts to allow forformation of a more natural bed (embedment of theculvert invert to a depth of at least 0.15m to 0.3m);and

- roughening of culvert inverts to help reduce watervelocities.


Operation In relation to channel realignment, the Contractor willimplement the following mitigation:

· Where channel realignment is proposed, the length ofthe realignment would be kept to a minimum, with theexisting gradient maintained where possible. Therealignment would be designed in accordance withchannel type and gradient, and, if required, couldinclude low flow channels and other designs to reducethe potential for siltation and may provide anopportunity to improve the geomorphology of the waterfeature.

To reduce impactsof channelrealignment on thewater environment.



Operation In relation to drainage discharges the Contractor willimplement the following mitigation measures:

· The Proposed Scheme includes outfalls that dischargeroutine road runoff to receiving water features. InScotland, SuDS are a legal requirement under theControlled Activities Regulations (CAR) 2011 (asamended); a minimum of two levels of SuDS isintended to be included for all mainline outfalls, inagreement with SEPA and SNH.

· SuDS would be designed in accordance with TheSuDS Manual, CIRIA C753 (CIRIA, 2015) and SuDSfor Roads (SCOTS, 2010) guidance.

· Where it has been identified as necessary for roaddrainage to discharge to water features, mitigation

To reduce impactsof drainagedischarges on thewater environment.

Where required,authorisation for theroad drainagedischarge under CAR2011 (as amended)would be obtainedfrom SEPA



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(types and combinations of SuDS components) wouldbe designed to limit the volume of discharge and therisk to water quality. Where required, authorisation forthe road drainage discharge under CAR 2011 (asamended) would be obtained from SEPA.

· For each outfall, a ‘treatment train’ of SuDS would beincorporated to attenuate the road runoff to pre-development rates, reduce the polluting load carriedwithin this runoff to acceptable levels and significantlyreduce the risk of any accidental spillages. SeeOperation – Specific Mitigation for details.

· All of the proposed SuDS systems for the outfalls fromthe mainline, junctions and side road connectionswould be designed with an impermeable liner whererequired to reduce any identified risk of pollution togroundwater, unless otherwise agreed with SEPA bythe Contractor. The proposed SuDS for some selectedlocal road drainage networks and access tracks wouldinfiltrate into the ground.

· SuDS retention ponds and detention basins would besized to attenuate and store the 0.5% AEP (200 year)plus climate change flood event and restrict the outflowto the greenfield pre-development runoff rate of 50%AEP (2 year) flood event. SuDS systems would belocated where practical outside the functional (0.5%AEP) floodplain.

· To avoid sub-optimal operation of the road drainagenetwork, maintenance of SuDS components would benecessary. Regular inspection to inform onmaintenance frequency requirements would berequired. Further information on maintenancerequirements for the specific SuDS features is providedin Appendix A11.6 (Water Quality).



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· Regular maintenance of receiving water features andculverts to reduce the risk of blockages and associatedflood risk.

· Provision of scour protection at the drainage dischargeoutfall to protect the banks and bed of the receivingwater feature and to limit erosion.

Project Specific MitigationP12-W18 Throughout Proposed

SchemePre-construction&Construction

Prior to construction the Contractor shall produce aSurface Water Management Plan (SWMP) (or similarsuch document) that will be submitted to SEPA forapproval as part of the CAR authorisation process for sitedischarges. This document will include details oftemporary construction drainage and sediment controlmeasures and will take into consideration the phasing ofworks, topography, land available for treatment of surfacewater and the location of surface water features.A preliminary assessment of construction SuDsrequirements has been carried out, involving calculationof indicative sizes of settlement basins and identificationof land that may be of use to the Contractor for thepurposes of surface water and sediment control. Theseland areas lie within the Proposed Scheme constructionarea boundary (Figure 5.12). .

To implementappropriatecontrols for siterunoff andsedimentation andreduce impacts onthe waterenvironment.

Approval of theSurface WaterManagement Plan isrequired from SEPA.If flocculants areconsidered necessaryto aid settlement offine suspendedsolids, such as clayparticles, thechemicals used mustfirst be approved bySEPA.Where required,temporary dischargeconsents to beobtained from SEPAthrough the WaterEnvironment(Controlled Activities)(Scotland)Regulations 2011 (asamended).

P12-W19 Throughout ProposedScheme

Pre-construction

Monitoring protocols prior to and during the constructionphase will be developed within a site specific WaterQuality Monitoring Plan, which will be submitted to SEPAfor approval prior to construction as part of the CAR

To measure theeffectiveness ofimplementedmitigation

Approval of the WaterQuality MonitoringPlan is required fromSEPA



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authorisation process for site discharges. This wouldinclude, but would not be limited to:

· Appointment of a suitably qualified Environmental Clerkof Works (EnvCoW), who will review the scheduling ofearthworks, storage of materials, implementation ofdrainage and surface water treatment measures, andundertake monitoring of water quality, as detailed instandard Mitigation Items SMC-W1, SMC-W3, SMC-W4, SMC-W6, SMC-W7, SMC-W8, SMC-W9 andSMC-W10; EnvCoW will be provided with the authorityto stop works and implement remedial action withimmediate effect.

· The location of sampling points, frequency andduration of monitoring, sampling parameters,thresholds and protocols for the notification ofStakeholders in the event of failures will be agreed withSEPA.

· The monitoring programme will include baselinemonitoring prior to construction, and monitoring postconstruction where deemed necessary.

· Upstream control locations will be included, in additionto the main downstream monitoring locations.

· Water quality monitoring locations will be co-locatedwith proposed aquatic ecology monitoring locationswhere practicable.

measures inprotectingdownstream waterquality and aquaticecological interests.

P12-W20 Throughout the ProposedScheme, in particular AlltCosach HydrostationAbstraction, TomatinDistillery Abstraction,PWS Lynebeg Pond,PWS Lynebeg and PWSLynemore

Pre-construction

A site specific Private Water Supply Protection Plan willbe developed and submitted to SEPA for approval prior toconstruction. This will include, but will not be limited to:

· Identification and mapping of all PWS sources andinfrastructure that could be impacted by the ProposedScheme.

To ensure theprotection ofsurface water fedPWS.

Approval of thePrivate Water SupplyProtection Plan isrequired from SEPA



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· Development of a PWS water quality monitoringprogramme preconstruction, during construction andpost construction.

· Development of a PWS contingency plan includingprovision of an emergency hotline telephone andarrangements for an alternative temporary watersupply (tankers or similar).

· Providing affected properties with an alternative supplyprior to construction. Consideration of options will beundertaken in consultation with the land owner andmay include the use of a mains water supply, forexample.

P12-W21 Throughout the ProposedScheme

Operation In relation to culverts the Contractor will implement thefollowing measures:

· Natural bed substrate: for box culverts (i.e. with anartificial bed) a depressed invert set slightly below theexisting bed level is require. This will allow space fornatural bed substrates to be imported to form the bedlevel. For culverts less than 1.2 m diameter or height(internal height) the invert should be buried at least 15cm below the natural bed level. For culverts 1.2 - 1.8 mdiameter or height (internal height) the invert should beburied at least 20 cm below the natural bed level. Forculverts greater than 1.8 m diameter or height (internalheight) the invert should be buried at least 30 cm belowthe natural bed level. Baffles (precast or otherwise)may be required if there is a risk of the naturalsediment flushing through at high flows. The culvertdesign should reflect the natural bed profile includingbank to bank channel width, channel gradients andsubstrates where possible. Portal frames which do notpossess an artificial bed do not require specific bedmitigation, but do still need an appropriate bedsubstrate;

To incorporatesustainablefeatures andmaintain flow andappropriatepassage for wildlife.

None required



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· Low flow channel: a low flow channel (sizedappropriate to each watercourse) should beconstructed within the culvert to maintain sufficientwater depths and sediment transport through theculvert during normal flow conditions;

· Fish passage: except where specifically stated, a‘buffer’ zone will be created up and downstream ofculverts to allow for the creation of habitats which willboth enhance the watercourse, and incorporatefeatures such as pools which will allow fish to restbefore entering the culvert. The overall culvert designshould not in any way impede fish passage up anddownstream, and the gradient should reflect thesurrounding landscape, overly steep or shallowgradient should be avoided where possible;

· Bank protection: although each culvert should beconsidered separately, it is likely that some bed andbank protection will be required upstream at transitionbetween the watercourse and culvert. Hard (grey)bank and bed protection should be avoided wherepossible. Rip-rap and boulders (or ‘greener’ solutionswhere possible) and planted stone and coir rolls arepreferable to gabions;

· Transition: appropriate inlet and outlet structuresshould be provided to ensure smooth hydraulictransition and avoid erosion. Headwall arrangements atthe upstream and downstream ends of a culvert shouldbe suitably keyed into the bed and banks of thewatercourse, should be the shortest length possible,and should be appropriate to the local environment;

· Scour pool: scour pools at the outlet of the culvertshould be constructed to dissipate energy and provideresting areas for fish. This is especially important forsteeper culverts (>3%) and/or where stream powersare high; and



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· Outfalls: it is also important that the alignment ofoutfalls are designed to reduce scour around thestructure and erosion of the adjacent river bed andbanks. Discharge from the outfalls should be similar tothe adjoining watercourse (see SEPA guidelines formore information).


Operation In relation to river realignments/diversions the Contractorwill implement the following measures:

· Bed gradient: maintaining the existing bed gradient willensure the continuity of the existing sediment regime.Too low and excessive substrate may begin to deposit,blocking culvert entrances and/or reducing flood flowcapacity, this also reduces sediment supplydownstream. Too steep and excessive bank erosionand/or bed incision may begin to occur increasingsediment supply downstream (potentially depositingwithin culverts). Where the design of the road dictatesa change to the bed gradient, mitigation will benecessary, which may include features such as step-pools, bed-checks and sediment traps;

· Cross-section: the design of an appropriate low flowchannel will also ensure the continuity of the existingsediment transport regime. A two-stage or multiple-stage cross-section can provide a wide range ofbenefits and preserve the existing low flow processes,allowing for natural adjustment and improve systemresilience to low flow events. The multiple stage cross-section also encourages a range of habitats to formand accommodates flood flow capacity whilst ensuringa low flow channel is maintained;

· Planform: the planform should reflect the existingchannel where possible or restore historical planformswhere the existing channel has been artificiallymodified; and

To incorporatesustainablefeatures, maintainflow and enhancebiodiversity.

None required



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· Boundary conditions: existing substrates should becollected, stored (without contamination) andreinstated. Where re-use of is not possible, substratesshould be matched to local material. The suitability ofsubstrates should be considered using empiricalobservations made by a qualified geomorphologist, aswell sediment transport calculations (where deemedappropriate) and local sources.

Other mitigation features such as woody material, gravelfeatures (bars), vegetation and riffle-pools should beconsidered to further enhance and restore habitats andnatural processes to the watercourse in appropriatelocations.The design of any realignments, especially includingfeatures such as steps or bed checks will need to ensurethey are suitable (i.e. passable) for any potentialmigratory fish species present. Consultation withfreshwater aquatic ecologists is essential at the outset.The need for a realignment in all cases should be avoided(or minimised) where possible. Unnecessary modificationto a river channel may initiate instability as the channelattempts to recover to a natural course.


Operation In relation to watercourse bank and bed protection theContractor will ensure:

· where bank protection is required (e.g. culvert inletsand outlets, tight meander bends or vulnerable areas),this should be formed of naturally occurring materials,stone (e.g. rip-rap) and/or locally sourced hardwoodwherever possible. If the channel requires moreengineered solutions it should be sympathetic to thelocal landscape and habitats, and used in combinationwith a planting scheme to improve the aesthetics andlong-term stability of the banks. The role of vegetationfor channel stability should also not be underestimated

To incorporatesustainablefeatures, maintainflow and enhancebiodiversity.

None required



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and consultation with the landscape architect should beundertaken at the earliest opportunity; and

· where it is necessary to protect the bed from bed scour(incision) natural materials (boulders, ideally buried)should be used as opposed to smooth concrete toincrease roughness, maintain flow diversity and reducethe risk of transferring the erosion downstream.


Pre-construction&Construction

Where culverts are to be built online, early considerationis required of the design and implementation of temporarybypass channels. The design of any bypass diversionshould also consider all the items listed above inMitigation Item P12-W22, especially if intended to be in-situ for a long period of time.Other temporary works such as pipes or over-pumpingshould be used where a temporary bypass channelcannot be constructed.

To maintain flowcontinuity and allowunimpeded fishmigration throughthe watercourse.


P12-W25 Dalmagarry Burn Pre-construction& Operation

The Contractor shall ensure that the standard mitigationmeasures specified in Mitigation Items SMC-W13 toSMC-W17 and P12-W21 to P12-W23 are applied. Giventhe significance of the realignment further mitigation isrequired to minimise any potential impacts. Theseinclude:

· appropriate bankside planting;· installation of instream channel features to support the

fish populations (i.e. undercut banks, woody debrisetc.) and a wetland backwater utilising the downstreamtie-in with the existing channel;

· maximising connectivity with the adjacent floodplain toimprove the natural functioning of the river system;

· channel to possess a two-stage channel profile, with anappropriate low flow channel intended to connect withthe second stage every year or two;

To reduce the riskof erosion, replicatethe natural bed andimprovefunctionality of thewater feature.

CAR applicationsrequire approval fromSEPA



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· bed checks will be needed at appropriate locations(e.g. changes in bed gradient) to reduce the likelihoodof incision occurring; and

· boulders 300-600mm to be used to form bed features.The above will be agreed with SEPA via the CARlicencing process.

P12-W26 Allt na Frithe Pre-construction& Operation

In relation to the proposed Allt na Frithe culvert andassociated realignment:

· appropriate bed checks and step-pool features alongthe realignment and bank protection around theentrance and exit to the culvert are to be installed;

· DMRB Stage 3 hydraulic modelling specifies the needfor a cascade or similar feature to manage the flowsentering the culvert. If confirmed at detail design, thecurrently proposed realignment should be extendedupstream to reduce the impact of the gradient andpotential impact on fisheries. The Proposed Schemeboundary has been extended upstream to allow forthis; and

· boulders approx. 200-300mm in diameter to be used toform bed features.


None required

P12-W27 Allt Dubhag Pre-construction& Operation

In relation to the proposed Allt Dubhag culvert andassociated realignment:

· DMRB Stage 3 hydraulic modelling specifies the needfor a cascade or similar feature to manage the flowsentering the culvert. If confirmed at detailed design,the currently proposed realignment should be extendedupstream to reduce the impact of the gradient andpotential impact on fisheries. The Proposed Schemeboundary has been extended upstream to allow forthis.

· Boulders approx. 100-200mm in diameter to be used toform bed features.


None required



MitigationItem


Timing ofMeasure



P12-W28 Caochan nah-Eaglais Pre-construction& Operation

In relation to the proposed Caochan na h-Eaglais culvertsand associated realignments:

· boulders approximately 300-400mm in diameter to beused to form bed features. The steep gradientsheightens the need for appropriate step-pool/bed checkfeatures along the realignment and bank protectionaround the entrance and exit to the culverts.


None required

P12-W29 Allt na Loinne Moire Operation In relation to the proposed Allt na Loinne Moire culvertsand associated realignment:

· ensure appropriate bed checks and bank protection areinstalled; and

· boulders approximately 200-300mm in diameter to beused to form bed features.

To reduce the riskof erosion, replicatethe natural bed andimprovefunctionality of thewater feature

None required

P12-W30 Allt na Slanaich Operation In relation to the proposed Allt na Slanaich culvert andassociated realignment:

· appropriate bed checks and step-pool features alongthe realignment and bank protection around theentrance and exit to the culvert are to be installed;

· the currently proposed realignment should be extendedupstream to reduce the impact of the gradient andpotential impact on fisheries. The Proposed Schemeboundary has been extended upstream to allow forthis; and



None required

P12-W31 Allt Creag Bheithin In relation to the proposed Allt Creag Bheithin culvertsand associated realignments:

· appropriate bed checks along the realignment andbank protection around the entrance and exit to theculvert are to be installed; and


None required



MitigationItem


Timing ofMeasure




P12-W32 Pond 5, Lynebeg South Operation To compensate from the loss of Pond 5 a new pond willbe established immediately downhill of the existing pond.As per Mitigation Item P12-E16 the new pond will be of asimilar surface area to the original pond, but with slopingmarginal shelves of gradient no greater than 1:8, ensuringthe establishment of an extensive marginal wetland plantassemblage.The new pond may be lined to ensure water retention,subject to ground and soil conditions. In the event pondlining is required, a natural bentonite clay product will beused to ensure the sustained hydrological viability of thereplacement pond. Where possible, the new pond will be‘seeded’ with translocated material from the existing pond(seed bank, sediment, and/or vegetation where practical)to encourage rapid establishment of similar successionalcharacteristics as the pond being lost.The pond will otherwise be designed following goodpractice principles as described by SEPA Guidance ongood practice in the management and creation of smallwaterbodies in Scotland.The operational SuDS ponds are not to be considered ascompensation for the loss of natural ponds. However,they will be designed and planted to maximise theirbiodiversity.

To maintainbiodiversity

SEPA and SNH

P12-W33 Pond 12, Tigh an AlltNorth

Pre-construction& Operation

At detailed design the embankment toe drainage will bemodified to ensure the existing inflows and outflows toPond 12 are maintained.

To maintain pondwater levels andbiodiversity

None required

P12-W34 Allt Creag Bheithin Pre-construction& Operation

In relation to the Allt Creag Bheithin flood compensationstorage areas:The Contractor will construct the storage areas andassociated culverts as per the Proposed Scheme. TheContractor shall ensure that the standard mitigation

To reduce the riskof flooding impacts

None required



MitigationItem


Timing ofMeasure



measures specified in Mitigation Items SMC-W1 toSMC-W4, SMC-W13 to SMC-W17 and P12-W21 to P12-W23 are applied.In addition, the Contractor shall:

· Restore the storage areas in accordance with thelandscape and ecological mitigation plans (given inFigures 13.8a-t of Chapter 13)

· Adhere to the principles set out in the peat and soilmanagement plan (Appendix A10.2).

Table 21.6: Ecology and Nature Conservation

MitigationItem


Timing ofMeasure


SpecificConsultationor ApprovalRequired

Standard A9 MitigationSMC-E1 Throughout

Proposed SchemePre-Construction

Pre-construction surveys will be undertaken to verify and, whererequired, update the baseline ecological conditions set out in the ES.The scope of the pre-construction surveys will be confirmed withSNH prior to them being undertaken

To update thebaseline ecologicalconditions set outin the ES.

SNH

SMC-E2 ThroughoutProposed Scheme

Pre-Construction

Prior to construction a suitably qualified (or team of suitably qualified)Ecological Clerk of Works (ECoW) will be appointed and will beresponsible for implementation of the Ecological Management Plan.The ECoW will:

· provide ecological advice over the entire construction programme,at all times as required;

· undertake or oversee pre-construction surveys for protectedspecies in the areas affected by the Proposed Scheme; andensure mitigation measures are implemented to avoid and reduceimpacts on ecological features; and

To ensure theimplementation ofthe EcologicalManagement Plan.

Consultationwith therelevantsalmonfisheriesboard.



MitigationItem


Timing ofMeasure



· monitor the implementation of the mitigation measures during theconstruction phase to ensure compliance with protected specieslegislation and commitments within the ES.

The ECoW will be a member of the Chartered Institute of Ecologyand Environmental Management (CIEEM) and will have previousexperience in similar ECoW roles. All ECoWs will be approved byTransport Scotland to be appropriately qualified for the role. TheECoW will be appointed in advance of the main constructionprogramme commencing to ensure pre-construction surveys areundertaken and any advance mitigation measures required areimplemented.

SMC-E3 At watercoursesthroughoutProposed Scheme

Construction Noise and vibration will be reduced by working back from the riverbank where possible or working within a dry area to avoidimplications to fish, such as behavioural changes e.g. avoidance ofareas or physical damage e.g. to hearing. In addition, soft-starttechniques will be applied to piling work procedures to enablesensitive species to evacuate the area.

To protect fishspecies from noiseand vibration.

Nonerequired.

SMC-E4 At watercoursesthroughoutproposed scheme

Construction Where areas are required to be temporarily dewatered to permitconstruction activities, fish will be removed by means ofelectrofishing and relocated prior to dewatering.

To protect fishspecies during de-watering ofwatercoursesections and in-stream works.

CAR Licenceapproved bySEPA

SMC-E5 At watercoursesthroughoutproposed scheme

Construction Water flow/passage will be sufficiently maintained to permitmovement of Atlantic salmon, brook lamprey and brown/sea troutpast areas of dewatering and/or significant alteration of watermovement during any construction works within the watercourses.Suitable temporary channels may be implemented so that movementbetween areas of habitat can be maintained.

To protect fishspecies during de-watering ofwatercoursesections and in-stream works.

CAR Licenceapproved bySEPA


Pre-Construction

The Contractor will obtain and comply with the requirements of anyprotected species derogation licences in respect of works that havethe potential to breach applicable conservation legislation necessary

To comply withconservationlegislation.

SNH



MitigationItem


Timing ofMeasure



to construct the project. Licensing may be for the UK and/orprotected species.



Tree felling and vegetation clearance to be minimised as far aspracticable and undertaken outside the core bird nesting season (01March to 31 August) to avoid damage or destruction of occupiednests or harm to breeding birds. If this cannot be achieved, workswithin the core bird nesting season will require an inspection ofvegetation to be cleared for nesting birds by a suitably qualifiedecologist no more than 24 hours prior to any works beingundertaken. If any nesting birds are identified during the survey,they will be left in situ for their entire nesting period until the youngbirds have fledged. Alternative approaches to the work will need tobe proposed e.g. leaving an exclusion zone around the nest to avoiddisturbance.All cleared vegetation will be rendered unsuitable for nesting birds,for example, by covering or chipping depending on the end purposeof the vegetation, or will be removed from the works area.

To protect habitatand fauna duringbird nestingseason.

Nonerequired



Any tree felling will be carried out by experienced contractors toreduce direct mortality of protected species according to agreedfelling methods between contractors and the ECoW.

To protect faunaduring removal ofhabitat.

Nonerequired


Pre-Construction,Construction &Post-Construction

Plant and personnel will be constrained to a prescribed workingcorridor through the use of, where practicable, temporary barriers tominimise the damage to habitats and potential direct mortality anddisturbance to animals located within and adjacent to the ProposedScheme working corridor.

To protect habitatsand fauna.

Nonerequired


Construction The use of construction lighting will be in accordance with ‘BS5489Code of Practice for the Design of Road Lighting’ and followguidance on lighting (e.g. Bat Conservation Trust (2009) andInstitute of Lighting Engineers (2007)). The construction lightingdesign will take into account the need to avoid illuminating sensitivemammal habitats (e.g. for bats and badgers) in locations such as:adjacent to watercourses; along woodland edges; and, where thereis known activity identified through pre-construction ecological

To protect sensitivemammal habitatsfrom illumination.

Exceptions tobe agreedwith SNH



MitigationItem


Timing ofMeasure



surveys (refer to Mitigation Item SMC-E1). Where this is notpossible the Contractor will agree any exceptions with SNH.


Construction During construction trees will be protected in line with guidelinesprovided in ‘BS 5837 Trees in relation to Construction’ (BritishStandards Institute, 2012). This includes the following:

· establishment of Root Protection Areas (RPA);· protective fencing will be erected around the RPA to reduce risks

associated with vehicles trafficking over roots system or beneathcanopies;

· selective removal of lower branches of trees to reduce risk ofdamage by construction plant and vehicles;

· prevent soil compaction measures; and· maintain vegetation buffer strips (where practicable).

To comply withguidelines providedin ‘BS 5837 Treesin relation toConstruction’(British StandardsInstitute, 2012).

Nonerequired


Construction &Post-Construction

Planting will be undertaken to replace any trees that were intendedto be retained which are felled or die as a result of constructionworks. The size, species and location of replacement trees will beapproved by Transport Scotland and other relevant stakeholders.

Replacement oftrees lost that areto be retained.

TransportScotland andother relevantstakeholders


Construction Trenches, holes and pits will be kept covered at night or provide ameans of escape for mammals that may become entrapped. Gatesto compound areas will be designed sensitively to prevent mammalsfrom gaining access and will be closed at night.

To avoid mammalsbecomingentrapped in andaround compoundareas duringconstruction.

Nonerequired


Construction Temporary mammal-resistant fencing will be provided aroundconstruction compounds following a specification agreed throughconsultation with Transport Scotland.

To avoid mammalsbecomingentrapped in andaround compoundareas duringconstruction.

TransportScotland



MitigationItem


Timing ofMeasure




Construction The Contractor will describe within the CEMP (Mitigation ItemSMC-S1) the strategy to be implemented for the appropriatetreatment of invasive, non-native species (INNS).The strategy will set out appropriate construction, handling,treatment and disposal procedures to prevent the spread of INNS inline with recognised best practice.

To prevent thespread of INNS.

Nonerequired

n/a (note) ThroughoutProposed Scheme

Construction Further to the above, the mitigation detailed in Table 21.5 (RoadDrainage and the Water Environment), Table 21.7 (Landscape andVisual), Table 21.9 (Air Quality) and Table 21.10 (Noise andVibration) will be implemented to protect aquatic and terrestrialhabitats and species.

To protect aquaticand terrestrialhabitats andspecies.

n/a

Project Specific MitigationP12-E16 Throughout

Proposed SchemePre-Construction &Construction

A Habitat Protection Plan will be produced pre-construction andagreed with SNH. The working area will be kept to the minimumnecessary for construction of the project to reduce habitat loss.

To protect habitats SNH

P12-17 ThroughoutProposed Scheme


Prior to construction necessary consents for tree felling will beobtained as provided for under the Forestry Act 1967.

To comply withlegislation

ForestryCommission

P12-E18 ThroughoutProposed Scheme


The removal of any trees identified for retention with the ES shouldbe avoided. Where any trees that were intended to be retained areidentified as requiring felling or die as a result of construction workswill be replaced, assessment of the trees at such location should beundertaken. Any changes to the extent of tree removal from thatassessed within the ES, should be subject to assessment using thesame methods as detailed within the ES to determine theappropriate mitigation requirements. Where required any additionalimpacts identified will be appropriately mitigated for using the samemethods as detailed within the ES. The size and species ofreplacement trees will be agreed in consultation with SNH and theForestry Commission, and will take account of management plans toimmediately adjacent woodland.

To protect trees SNH andForestryCommission



MitigationItem


Timing ofMeasure




Construction Best practicable means will be employed to avoid the disturbance ofsensitive species and habitats with noise, dust and air pollution.Please refer to Standard Mitigation Measures as detailed in Chapter16: Air Quality and Standard Mitigation Measures as detailed inChapter 17: Noise and Vibration for further details.

To protect faunaand habitats

None


Construction Ponds lost to construction will be replaced as near to their originallocation as practically possible, or within the nearest suitable habitat,whichever is more ecologically advantageous. This will beundertaken at a ratio of 1 pond loss: 1 pond replacement. SuDS anddrainage features shall not act to offset the loss of any pond;however SuDS shall be designed to maximise their biodiversityvalue, in line with the CIRIA SuDS Manuali.


None


Construction Construction works (for example, temporary watercourse diversionsand in-channel working) to be undertaken taking into accountsensitive ecological seasons (e.g. breeding, hibernation or migrationseasons) and the potential impact that the type of construction workcould have on protected species within that season. Prior toconstruction consultation will be undertaken with SNH to confirm theprogramme of construction works.The key sensitive period for salmonids is mid-October to June,inclusive. However the most acceptable timing will depend on whichsensitive species are present and will be agreed with SEPA, ScottishNatural Heritage (SNH) and Findhorn, Nairn and Lossie FisheriesTrust. During any river dewatering and/or in-channel working, anecological watching brief and fish rescue plan will be instigated inconsultation with SNH and SEPA.

To protect fishspecies

SNH andSEPA


Construction Mitigation measures to avoid or reduce potential impacts on surfacewaters will be employed, including adherence to Pollution PreventionGuidelines (PPGs)ii during construction, and appropriate roaddrainage and runoff treatment.

To protect faunaand habitats

None


Construction Any permanent watercourse diversion works (including realignmentsat crossings) will incorporate design measures that enhance both in-channel and riparian habitat quality e.g. provision of resting


None



MitigationItem


Timing ofMeasure



pools/spawning habitats for salmonids. Refer to Chapter 11 RoadDrainage and Water Environment for key watercourse constructionand design mitigation commitments.



Species Protection Plans to be produced pre construction andagreed with SNH. Plans will be produced for the following species:bats, otter, red squirrel, reptiles and water vole and any otherspecies as deemed necessary from the pre-construction surveys.

To protect fauna SNH


Construction Appropriate exclusion zones in line with best practice and as agreedwith SNH should be maintained.Where exclusion zones of the required size are not possible and if alicence is not needed the amended buffer zone should be agreedwith the relevant statutory body.

To protect fauna SNH


Construction No working within 50m of watercourses during the hours ofdarkness, taken to be 30 minutes before sunset to 30 minutes aftersunrise. In the event that works must be undertaken within this timeperiod, the nature of the works should be discussed with the ECoWto establish what mitigation measures are required. Works may onlytake place with the agreement of the ECoW.

To protect fauna(primarily otters)

None



Tree felling in areas with red squirrel dreys will be timed outside ofthe red squirrel breeding season (February to September). Wherethese timescales cannot be achieved the ECoW will determine anappropriate course of action. All tree felling in locations where dreysare present (active or inactive) will be supervised by the ECoW. ASNH derogation licence must be in place for the removal of all activedreys (and dreys where activity levels cannot be confirmed).

To protected redsquirrels

If licencerequired -SNH



European Protected Species licences will in place for all bat roosts tobe removed or disturbed. Any bat roosts to be lost will be replacedwith bat boxes (or other suitable roosting feature), to be erected priorto the loss of the roost. The requirement for the replacement roostswill be determined following pre-construction surveys. Six new batboxes to be located within retained woodland within the land madeavailable for the works as shown on the Landscape and Ecological

To protect batspecies

SNH



MitigationItem


Timing ofMeasure



Mitigation Plans (Figure 13.8a-t) (precise number and location to bedetermined following pre-construction surveys).



A precautionary method of working (PMW) will be produced prior toconstruction to detail methodology to follow for habitat clearance inareas of suitable reptile habitat. Pre-construction hand searches ofany areas containing suitable reptile habitat, will be undertaken bythe ECoW. Any reptiles encountered will be moved to alternativesuitable habitat. All vegetation clearance in areas of high suitabilityfor reptiles will be cleared outside of the hibernation period(November to February, subject to seasonal variations). Wherethese timescales cannot be achieved the ECoW will determine anappropriate course of action.

To protect reptiles None



Permanent otter fencing to be installed 100m either side ofwatercourse crossings, where indicated on the Landscape andEcological Mitigation Plan (Figure 13.8a-t), to be installed prior toscheme completion. Design should follow SNH guidance.iii Therecommended specification is as follows: at least 1.2m highgalvanised welded mesh (of at least 2.5mm gauge) above groundlevel, with a maximum mesh size of 100 x 50mm attached to fenceposts and topped with barbed wire. Below ground, the mesh shouldbe dug in to a depth of 300mm, or 100mm with a horizontal lap onthe otters’ side of 300-450mm.Temporary otter fencing must be installed prior commencement ofthe construction phase, 100m either side of all watercoursecrossings where specified. Specification should follow that of thepermanent fencing, where deviations to this are required forconstructability purposes, these should be agreed with the ECoWand SNH.

To protect otters Deviations tobe agreedwith SNH

P12-E31 Pond 5 - Lynebeg Construction The pond south of Lynebeg (Pond 5) will be lost as a result of theScheme. A new pond will be constructed in an area to the east ofthe existing pond.The new pond will be designed to occupy a surface area similar inextent to the existing pond being lost, but will include sloping


SNH andSEPA



MitigationItem


Timing ofMeasure



marginal shelves of gradient no greater than 1:8, ensuring theestablishment of an extensive marginal wetland plant assemblage.The new pond may be lined to ensure water retention, subject toground and soil conditions. In the event pond lining is required, anatural bentonite clay product will be used to ensure the sustainedhydrological viability of the replacement pond. Where possible, thenew pond will be ‘seeded’ with translocated material from theexisting pond (seed bank, sediment, and/or vegetation wherepractical) to encourage rapid establishment of similar successionalcharacteristics as the pond being lost.The pond will otherwise be designed following good practiceprinciples as described by SEPA Guidance on good practice in themanagement and creation of small waterbodies in Scotlandiv.An ecological watching brief and fish rescue plan will be instigated inconsultation with SNH and SEPA during pond dewatering activities.


Construction Mitigation for the loss of ecologically important habitats will occurthrough habitat creation including roadside planting, whereappropriate, and has been integrated with landscape planting asshown on Figure 13.8a-t. This includes planting of new woodland ata variety of locations to mitigate for the loss of non-ancientwoodland.Landscape planting and newly created habitat will be comprised oflocally obtained native species of local provenance, and willcomprise a mixture of species.Sowing/planting should be undertaken in the appropriate plantingseason but as soon as possible following completion of the works toreduce the likelihood of the areas being colonised by invasive, non-native species which are of lower value to wildlife.Replacement habitats will be monitored and managed during theaftercare and operation phase of the Proposed Scheme.Where practicable habitat creation will to fill in existing gaps in linearvegetation features, adjoin or connect existing blocks of woodland oract as stepping stones between habitat areas.


None



MitigationItem


Timing ofMeasure




Construction Soil will be retained from locations of ancient woodland, as identifiedon the Landscape and Ecological Mitigation Plans Figure 13.8a-t,and reused in areas of woodland planting.


None



If an active water vole burrow is identified during pre-constructionsurveys then it is likely that an SNH derogation licence will berequired for any works proposed within 10m of the burrow.Where a licence is required, translocation of water vole from theworks area to a receptor site may be required to ensure that watervole are not harmed during construction. The need for and details ofthe translocation programme will determined by the ECoW, informedby the update pre-construction surveys, and developed inconsultation with SNH.

To protect watervole

SNH


Construction Aspen woodland will be avoided where possible. If felling isrequired, deadwood over 75cm circumference will be retained wherepracticable.

To protect aspenand speciesassociated with it

None


Construction Where retained, deadwood will be placed in a variety of locationsand conditions to benefit a number of species. Deadwood should bestored in a location away from the working area to prevent risk ofdamage and then placed within areas of retained woodland orwoodland planting at an appropriate time. The ECoW will provideguidance on suitable locations.Tree stumps will be retained in situ where felled on the edge ofworking areas where this does not pose a constraint to the works.Edges of woodland will be scalloped where practicable increasingvariety of conditions and where an increase in windthrow risk can beavoided.


None


Construction Where practicable top soil from cleared woodland will be storedappropriately for re-use where priority habitats and species areidentified and in areas where similar habitat is to be created, seeFigure 13.8a-t Landscape and Ecological Mitigation Plan.


None


Construction Where practicable top soil from species rich grassland affected willbe stored appropriately for re-use in areas where similar habitat is to


None



MitigationItem


Timing ofMeasure



be created, see Figure 13.8a-t Landscape and Ecological MitigationPlan.


Construction Where practicable top soil from heath lost will be storedappropriately for re-use in areas where similar habitat is to becreated, see Figure 13.8a-t Landscape and Ecological MitigationPlan.


None

P12-E40 Allt na Frithe. AlltDubhag,Dalmagarry Burn,Allt na LoinneMòire, Allt naSlànaich; and AlltCreag Bheithin

Construction Culverts placed on watercourses Allt na Frithe. Allt Dubhag,Dalmagarry Burn, Allt na Loinne Mòire, Allt na Slànaich; and AlltCreag Bheithin will designed as be open-arch structures that act to:· retain natural bed substrate within the culvert;· ensure no deterioration (and aim to improve) existing water depth and flow

provision within the culvert for migratory fish; and· improve river continuity by replacing existing A9 structures with artificial inverts.The watercourse outlet will be designed to provide appropriateresting pools immediately downstream of the culvert entrance.Marginal/riparian planting will also be implemented to provide coverand mitigate the transition from light to dark at the culvert inlet andoutlet. This will ensure fish are not discouraged or prevented fromentering or exiting the culvert.All culverts, including channel inlet and outlets, will be constructedwith reference to SEPA’s Good Practice Guides, namely:· Engineering in the Water Environment Good Practice Guide: Bank Protection

Rivers and Lochsv;· Engineering in the Water Environment: Good Practice Guide - River Crossingvi; and· Position Statement WAT-PS-06-02 - Culverting of Watercourses – Position

Statement and Supporting Guidancevii.

To ensure passagefor fisheriesthrough culverts

None

P12-E41 Around ponds 18and 24

Construction All vegetation clearance within 250m of ponds 18 and 24 will beundertaken following a Precautionary Method of Working (PMW) forgreat crested newts. This PMW will be produced by a suitabilityqualify ecologist and will include details on approaches and timingsfor vegetation clearance and methods for hand searches ofvegetation by an ecologist.

To prevent harm togreat crested newts

None



MitigationItem


Timing ofMeasure



P12-E42 SuDs pond(reference PYA)

Construction SuDs ponds and drainage channels at Tomatin Junction and SuDspond adjacent to the Allt Creag Bheithin where water vole have beenrecorded will be designed sensitively to provide habitat for watervole, see locations shown on Figure 13.8e and 13.8p Landscape andEcological Mitigation Plans.

To provideenhancement tohabitats in locationswhere water voleare present.

None


Construction Where any existing wood ant nests cannot be retained in-situ, theyshall be translocated to suitable receptor sites. Prior to translocation,areas of suitable habitat shall be identified and agreed with TS andSNH. Where these exist within the construction site boundaries,they shall be clearly marked as an area to be retained and protectedduring construction. Wood ant nests shall be translocated during thespring in accordance with a methodology agreed with SNH.

To avoiddetrimental impacton wood antpopulations presentwithin the siteboundary.

SNH

Table 21.7: Landscape and Visual

MitigationItem


Timing ofMeasure

Description Mitigation Purpose/Objective SpecificConsultation ofApprovalRequired

Standard A9 MitigationSMC-LV1 Throughout Proposed

SchemeConstruction The construction programme will be kept to the

minimum practicable time to reduce the durationof any landscape and visual impacts and areaswill be cleared for construction as close aspossible to works commencing and topsoiling,reseeding and planting shall be undertaken assoon as practicable after sections of work arecomplete.

To reduce the duration of anylandscape and visual impacts

None required

SMC-LV2 Throughout ProposedScheme


As far as practicable, construction plant andmaterials storage areas will be appropriately sitedto minimise their landscape and visual impact.

To reduce landscape and visualimpact of plant and materialstorage areas.

None required



MitigationItem


Timing ofMeasure



Construction Construction sites will be kept tidy (e.g. free oflitter and debris).

To reduce visual impact ofconstruction sites

None required


Construction Work during hours of darkness will be avoided asfar as practicable, and where necessary, directedlighting will be used to minimise lightpollution/glare. Lighting levels shall be kept to theminimum necessary for security and safety.

To reduce light pollution/glareduring night-time working.

None required


Construction To protect soil quality for the purposes oflandscape planting, the following measures willbe implemented:

· Uncontaminated topsoil for re-use shall bestored in un-compacted mounds no more than2m in height, and stored separately fromsubsoil material. Topsoil stripped from areasdesignated as Ancient Woodland shall bestored separately to all other topsoil and sub-soil material, in un-compacted mounds nomore than 2 m in height.

· Stripped topsoil shall be used in areas of thesame proposed vegetation type to utilise theexisting natural seed bank.

· Subsoil in planting areas shall be replacedafter construction and ripped to a minimum of450 mm prior to topsoiling and planting.

· Proposed planting areas in existing arable andpasture land, not subject to constructionactivity, shall be ripped to 600 mm to alleviatecompaction.

To protect soil quality for thepurposes of landscape planting.

None required


Construction The construction shall be managed such that theloss of any existing woodland, scrub, heath, mire,grassland vegetation, marshland, swamps and

To limit vegetation loss as far aspracticable.

None required



MitigationItem


Timing ofMeasure


isolated trees and shrubs not affected by thepermanent works is limited as far as practicable.


Pre-Construction

All existing trees and shrubs not affected by theconstruction of the permanent works shall befenced off with a suitable type of temporaryfencing in accordance with BS5837. Fencingshall extend to the drip line of the tree canopies(unless otherwise agreed by an arboriculturaladvisor), and shall be erected prior to anyconstruction activities in that area and shallremain for the entire period of construction in thatarea.

To protect existing trees andshrubs unaffected by theProposed Scheme.

None required

n/a (note) n/a n/a Further to the above, mitigation items SMC-E7and SMC-E8 (as detailed in Table 6: Ecology andNature Conservation) will be implemented toprotect vegetation which is identified to beretained.

To protect vegetation which isidentified to be retained.

n/a

Project Specific MitigationP12-LV8 Tomatin North Grade

Separated JunctionPre-ConstructionandConstruction

The Tomatin North GSJ will be subject to anextensive planting strategy comprising a mixtureof planting types, with woodland planting focusedon the eastern side of the junction, extendingacross the embankments associated with the sliproads, the aim being to limit awareness of thenew features within the setting of the RiverFindhorn. Mixed and coniferous woodland willcombine with scattered tree groups to soften theappearance of engineered slopes and tie intobroader areas of mixed woodland that exists tothe south. Riparian woodland will be used alongthe toe of the slope, in association with proposedSuDS ponds (P1-A and P2-A), to reflect thelocation within the context of the River Findhorn

To reduce appearance ofengineered slopes and to tie into existing woodland

None required



MitigationItem


Timing ofMeasure


P12-LV9 Tomatin North GradeSeparated Junction,north of Porter’s Lodgeand Sandside

Pre-ConstructionandConstruction

Specific planting in the form of feathered treesadjacent to the turning area for Tomatin GSJ tothe north of Porter’s Lodge and Sandside.

To provide screening to theproperties

None required

P12-LV10 Chainage 1200-1800 Pre-ConstructionandConstruction

Planting strategy to focus on the reformation ofthe edges of these larger areas of planting usingconiferous woodland.

Integrate with the wider plantingframework, offset habitat lossand reinforce the screeningcapability of the existing plantingin screening several nearbyproperties including Tigh an Alltand The Bellhouse.

None required


Planting strategy using groups of scattered treesand smaller blocks of mixed woodland.

To reflect the more open natureof surrounding landscape andallow opportunities for inter-visibility.

None required


Mosaic of different planting types, with the focuson extensive blocks of coniferous woodland,reforming the edge of Dalmagarry Quarry.Planting strategy for the re-alignment of theDalmagarry Burn and proposed SuDS pond (P4-B), with the focus on the use of riparian woodlandand groups of scattered trees.

To tie in Ruthven Link Road andthe existing Ruthven Road.To reflect the riverine landscapeand form new and variedecological habitats within thefloodplain.

None required

P12-LV13 Dalmagarry BurnCrossing, North ofDalmagarry Farm


Screen planting around the proposed crossing ofthe Dalmagarry Burn, comprising riparian andmixed woodland planting.Dispersed groups of trees will be planted to thenorth of Dalmagarry Farm, tying into the MoyLILO.

To provide a visual screening tothe residential property withinthe Dalmagarry Farm complex.

None required

P12-LV14 Moy LILO Pre-ConstructionandConstruction

Planting strategy to include several groups ofscattered trees within the slip roads, along withsmall pockets of riparian woodland associatedwith the proposed SuDS ponds (P4-A and P4-B).

To reflect the open nature of thewider landscape and offsethabitat loss.

None required



MitigationItem


Timing ofMeasure


Planting to increase in form and extent to thenorth of the junction, with blocks of mixedwoodland proposed across the embankmentbetween the mainline and the B9154. Additionalblocks of mixed woodland adjacent to thenorthbound carriageway along with severalgroups of scattered trees to tie into the matureplanting that exists along the Highland Main Linerailway.


Planting strategy to avoid extensive areas ofplanting to reflect the open characteristics of thislandscape. Narrow belts of mixed woodlandeither side of the mainline, between chainage5300 and 6000.

To replace woodland habitatremoved, and to tie into existinglandscape.

None required

P12-LV16 Lynebeg LILO andLynebeg Underpass


Planting strategy for larger blocks of mixedwoodland. In addition, blocks of riparianwoodland in association with the SuDS ponds(P7-A and P7-B) and replacement pond.Individual tree planting along the B9154, at the tiein with the Lynebeg LILO.

To reflect the natural occurrenceof wet woodland, riparianwoodland is proposed tointegrate with existinglandscape features and offsethabitat loss.

None required


North of the Lynebeg LILO coniferous woodlandis proposed adjacent to the northboundcarriageway, between chainage 6600 and 6750.North of this planting to use groups of scatteredtrees across engineered slopes and inassociation with the proposed SuDS ponds (P9-Aand PX-A).

Tie in planting to existingconiferous woodland to thenorth and south.

None required

P12-LV18 North of chainage 7600 Pre-ConstructionandConstruction

Narrow belts of coniferous planting reflecting thebroader landscape framework.

Tie into existing plantationwoodland and offset habitat lossthrough use of coniferousplanting.

None required



MitigationItem


Timing ofMeasure


P12-LV19 Allt Creag Bheithen Pre-ConstructionandConstruction

The proposed SuDS pond at chainage 9300 (PY-A), lying within the vicinity of the Allt CreagBheithen watercourse has riparian woodland andfurther groups of scattered trees associated withit. The proposed Forestry Access Road to thenorth of the chainage 10000 and tying back to theabove SuDS pond will have linear belts ofconiferous woodland planted either side.

To enhance biodiversity, offsethabitat loss and reflectplantation characteristics.

None required

P12-LV20 Scheme wide Pre-ConstructionandConstruction

Species rich mixes for the majority of grassverges with the aim of integrating these into thewider landscape character. The exception to thiswill be the use of less diverse grass species inareas associated with visibility splays which arecapable of withstanding regular cutting.

To integrate the grass vergesinto the wider landscapecharacter.

None required

P12-LV21 Scheme wide Construction The construction programme will be kept to theminimum practicable time to reduce the durationof any landscape and visual impacts and areaswill be cleared for construction as close aspossible to works commencing and topsoiling,reseeding and planting shall be undertaken assoon as practicable after sections of work arecomplete.

To reduce landscape and visualimpact of works.

None required.

P12-LV22 Scheme wide Construction As far as practicable, plant and material storageareas will be appropriately sited. Where possible,these should be located where existing featuressuch as trees can be used to screen them fromvisual receptors. Where this is not possible,screening can be achieved if necessary usingbunds or embankments which may become partof the permanent works. Alternatively, temporaryscreens can be erected, designed and painted tobe inconspicuous in their surroundings.

To minimise the visual impactas far as possible.

None required



MitigationItem


Timing ofMeasure


P12-LV23 Scheme wide Construction The construction shall be managed such that theloss of any existing woodland, scrub, heath, mire,grassland vegetation, marshland, swamps andisolated trees and shrubs not affected by thepermanent works is limited as far as practicable.

This will reduce the impact ofthe Proposed Scheme as far aspracticable.

None required

P12-LV24 Chainage 320 - 600(southbound)

Construction The embankment adjacent to the southboundcarriageway of the A9 has been steepened to agradient of 1:2 in order to reduce the potentialneed for felling.

This will reduce the potentialneed for felling.

None required

P12-LV25 Chainage 1470 – 1940(southbound)

Construction The cutting adjacent to the southboundcarriageway of the realigned Ruthven-Tomatinlink road has been eased out to a gradient of 1:6in order to better integrate the Proposed Schemeinto the adjacent landscape and allow for thepotential for the land to be returned for productiveuse.

This will allow for the potentialfor the land to be returned forproductive use and betterintegration of the ProposedScheme into the landscape.

None required


Construction The embankment adjacent to the southboundcarriageway of the A9 has been adjusted to agradient of between 1:2.3 and 1:4.3 as necessaryto tie into the existing B9154.

To tie into the existing B9154. None required

P12-LV27 Chainage 6900 – 7300(northbound)

Construction The cutting adjacent to the northboundcarriageway has been eased out to a gradient of1:4 to integrate the Proposed Scheme into theadjacent landscape.

To integrate the ProposedScheme into the landscape.

None required


Construction The embankment adjacent to the southboundcarriageway has been eased out to a gradient of1:8 to integrate the Proposed Scheme into theadjacent landscape and allow for the potential forthe land to be returned to the landowner.

This will allow for the potentialfor the land to be returned forproductive use and betterintegration of the ProposedScheme into the landscape.

None required



Table 21.8: Cultural Heritage

MitigationItem


Timing ofMeasure


Specific Consultation ofApproval Required

Standard A9 MitigationSMC-CH1 Throughout the

Proposed SchemeConstruction The Contractor will consult with the relevant local

authority and Historic Environment Scotland(HES) should any archaeological or culturalheritage finds or sites be discovered or revealedduring construction to enable appropriatemeasures to be implemented to mitigate potentialimpacts.

To enable appropriatemitigation measures tobe implemented tomitigate impacts onassets found duringconstruction.

Relevant Local Authorityand Transport Scotland’scultural heritage advisor.HES if affecting ScheduledMonument, Category AListed Building, HistoricBattlefield or Garden &Designed Landscape.

Project Specific MitigationP12-CH2 Refer to description Pre-

constructionArchaeological Trial Trenching will be undertakenin advance of construction to mitigate the impacton a number of potential archaeological sites.These final locations proposed for trenching willbe discussed and agreed with the HighlandCouncil Historic Environment Team.

To make a permanentrecord of any affectedarchaeological remains.

The Highland CouncilHistoric EnvironmentTeam and TransportScotland’s culturalheritage advisor.

P12-CH3 Throughout theProposed Scheme

Pre-constructionandConstruction

A permanent record of any affected previouslyunknown archaeological remains to be madewhich can include the use of strip, map andsample measures in advance of construction tomitigate the impact upon any such sitesdiscovered during the course of the works.

To make a permanentrecord of any affectedpreviously unknownremains.

The Highland CouncilHistoric EnvironmentTeam and TransportScotland’s culturalheritage advisor.Historic EnvironmentScotland if mitigationincludes ScheduledMonument, Category AListed Building, HistoricBattlefield or Garden &Designed Landscape


Construction A permanent record of any affectedarchaeological remains to be made through anarchaeological watching brief to be undertaken

To make a permanentrecord of any affectedarchaeological remains

The Highland CouncilHistoric EnvironmentTeam and Transport



MitigationItem


Timing ofMeasure


Specific Consultation ofApproval Required

during construction in order to mitigate the impacton the Dunkeld – Inverness Military Road

associated with theMilitary Road

Scotland’s culturalheritage advisor.

P12-CH5 Refer to description Pre-Construction

An earthwork (measured) survey to be carried outat sites 31 & 43 (Military Road), site 36 (Alt NaFrithe Bridge) and 55 (Wolf Trap).



P12-CH6 Site 84 Pre-Construction

A metal detecting survey to be carried out at thepossible location of the Rout of Moy (site 84).

To locate any evidence. The Highland CouncilHistoric EnvironmentTeam and TransportScotland’s culturalheritage advisor.

P12-CH7 Site 35 Pre-Construction

A Level 2 Building recording survey will be madeof the Tomatin Observation Post prior to itsdemolition.

To record the TomatinBunker prior to itsdemolition




Archaeological excavation will be undertaken inadvance of construction (if possible) to mitigatethe impact upon any remains which areuncovered during the trial trenching. Other sites,such as those located during the geophysicalsurvey may also be candidates for full excavation,rather than trial trenching. Exact areas will bediscussed and agreed with the Highland CouncilHistoric Environment Team.


The Highland CouncilHistoric EnvironmentTeam and TransportScotland’s culturalheritage advisor.Historic EnvironmentScotland if mitigationincludes ScheduledMonument, Category AListed Building, HistoricBattlefield or Garden &Designed Landscape


Pre-Construction

A photographic record of the current landscape(particularly in areas where large newinfrastructure, such as junctions and bridges) willbe undertaken to record the existing landscapeprior to construction of the Proposed Scheme

To make a permanentrecord of the currenthistoric landscape.




Table 21.9: Air Quality

MitigationItem


Timing ofMeasure


SpecificConsultation ofApprovalRequired

Standard A9 MitigationSMC-AQ1 Throughout Proposed

SchemeConstruction In relation to minimising fugitive dust emissions from

earthworks, material storage and concrete batchingthe following mitigation items will be implemented:

· stockpiles and mounds will be at a suitable angleof repose to prevent material slippage, will beenclosed or securely sheeted, and/or kept dampedas necessary during dry weather;

· the surfaces of any long-term stockpiles which giverise to a risk of dust or air pollution will be coveredwith appropriate sheeting or will be treated tostabilise the surfaces;

· mixing of large quantities of concrete will be carriedout only in enclosed or shielded areas;

· all handling areas will be maintained in a dust freestate as far as is practicable with sprinklers andhoses used to prevent dust escaping from the siteboundaries; and

· procedures will be established so that the site isregularly inspected for spillage of dusty orpotentially dusty materials and any such spillagewould be dealt with promptly where necessary toprevent dust nuisance.

To reduce fugitive dustemissions from earthworks,material storage and concretebatching.

None required

SMC-AQ2 Throughout ProposedScheme

Construction In relation to minimising dust from vehicle movementswithin the site the following mitigation items will beimplemented:

· the Contractor will employ appropriate measures,such as covering materials deliveries or loadsentering and leaving the construction site by afixed cover or sheeting appropriately fixed and

To reduce dust from vehiclemovements.

None required



MitigationItem


Timing ofMeasure


SpecificConsultation ofApprovalRequired

suitable for the purposes of preventing materialsand dust spillage;

· where unsurfaced routes are identified as creatingdust emissions during periods of dry weather,surfaces will be regularly dampened down usingwater bowsers; and

· appropriate speed limits will be established andenforced over all unmade surfaces.

SMC-AQ3 Throughout ProposedScheme

Construction In relation to appropriate cleaning of public roads thefollowing mitigation items will be implemented:

· the edges wheel washing facilities will be installedas required and heavy vehicles will be required touse the facilities prior to leaving the site;

· subject to approval from Transport Scotland andthe network operator, public roads immediatelyoutside the site entrance will be cleaned usingvacuum sweeper brushes and other specialisedroad cleaning equipment as necessary to maintainan appropriate state of cleanliness; and

· roads and footpaths adjacent to the ProposedScheme will be cleaned, with damping ifnecessary.

To reduce potential of dustfrom public roads

Approval requiredfrom the RoadsAuthority

Project Specific MitigationP12-AQ4 Throughout Proposed

SchemeConstruction Suitable mitigation measures to be employed for a

‘medium’ risk category site as identified in the IAQMConstruction Dust Guidance.

To reduce the potential fordust emissions to causenuisance.

None required



Table 21.10: Noise and Vibration

MitigationItem


Timing ofMeasure

Description Mitigation Purpose/Objective SpecificConsultation orApprovalRequired

Standard A9 MitigationSMC-NV1 Throughout


A scheme of noise and vibration monitoring will beagreed with the Environmental Health Officer ofPerth & Kinross Council, and noise and vibrationlimits will be contained within the ConstructionEnvironmental Management Plan (refer to MitigationItem SMC-S1). The contractor will be required todevelop and implement a Noise and VibrationManagement Plan to meet these requirements.

To predict the noise and vibrationlevels during the construction of theProposed Scheme. It will include thedesign of receptor specificmitigation, over and above thestandard mitigation detailed in SMC-NV2, where required.

The HighlandCouncilEnvironmentalHealth Officer

SMC-NV2 ThroughoutProposed Scheme


Best Practicable Means will be used to limit the levelof noise to which operators and others in the vicinityof site operations would be exposed. This includesthe following:

· the hours of working will be planned and accountwill be taken of the effects of noise upon personsin areas surrounding site operations and uponpersons working on site, taking into account thenature of land use in the areas concerned, theduration of work and the likely consequence ofany lengthening of work periods;

· any work outside of normal working hours will beagreed with the relevant local authority;

· where reasonably practicable, quiet workingmethods will be employed, including use of themost suitable plant, reasonable hours of workingfor noisy operations, and economy and speed ofoperations;

· permanent noise mitigation measures such asacoustic screens and earthwork bunds are to beconstructed as early as practical;

To reduce, as far as practicable, thelevel of noise to which operators andothers in the vicinity of siteoperations would be exposed.

The HighlandCouncil if anyworking outwithnormal workinghours



MitigationItem


Timing ofMeasure


· noise will be controlled at source, for example, bymodification of existing plant/equipment, its useand location and ensuring maintenance of allnoise-generating equipment;

· the spread of noise will be limited, i.e. by distancebetween source and receiver and/or screening;

· on-site noise levels will be monitored regularly,particularly if changes in machinery or projectdesigns are introduced, by a suitably qualifiedperson appointed specifically for the purpose. Amethod of noise measurement would be agreedwith the local authority prior to thecommencement of site works;

· on those parts of a site where high levels of noiseare likely to be a hazard to persons working onthe site, prominent warning notices will bedisplayed and, where necessary, ear protectorswill be provided;

· proper use of plant with respect to minimisingnoise emissions and regular maintenance in linewith plant manuals;

· where practicable, vehicles and mechanical plantused for the purpose of the works will be fittedwith effective exhaust silencers and will bemaintained in good, efficient working order;

· where appropriate, inherently quiet plant will beselected. All major compressors will be ‘soundreduced’ models fitted with properly lined andsealed acoustic covers which will be kept closedwhenever the machines are in use and allancillary pneumatic percussive tools will be fittedwith mufflers or silencers of the typerecommended by the manufacturers;



MitigationItem


Timing ofMeasure


· machines in intermittent use will be shut down inthe intervening periods between work or throttleddown to a minimum;

· all ancillary plant such as generators,compressors and pumps will be positioned so asto cause minimum noise disturbance. Ifnecessary, acoustic barriers or enclosures will beprovided; and

· adherence to the codes of practice forconstruction working and piling given in BritishStandard ‘BS 5228:2009+A1:2014’ and theguidance given therein minimising noiseemissions from the site.

In addition, THC would be consulted regarding anyproposed working out-with normal working hours.

n/a (note) In addition to the above, mitigation item S3 will alsomitigate potential for noise disturbance through theoverall communications strategy for the A9 DuallingProgramme and appointed Community LiaisonOfficer and liaison team.

Project Specific MitigationP12-NV3 A9 Tomatin GSJ,

Porters LodgeConstructionandOperation

A 210m long, 2m high acoustic barrier to beinstalled (location on Figure 13.8e) with an acousticperformance in accordance with BS EN 1793-2:2012 (Category B2). The form of the barriershould be designed and constructed to appropriatelysit in the landscape.

To reduce predicted traffic noiseimpacts to negligible.

None required

P12-NV4 The Bellhouse DuringConstruction

Use of a temporary noise barrier if required toreduce construction noise impacts at and near TheBellhouse to below the significance threshold. BS5228 advises that the approximate acousticattenuation provided by a barrier will be 5 dB whenthe top of the plant is just visible to the receiver over

To reduce impact on The Bellhouseresidents.

None required



MitigationItem


Timing ofMeasure


the noise barrier and 10 dB when the barriercompletely obscures the noise sources from thereceiver.

P12-NV5 ThroughoutProposed Scheme

DuringConstruction

Specific mitigation may be required for locationswhere potentially significant effects are shown. Thismitigation would be confirmed when the finalselection of plant and equipment is known and theimpacts reassessed. Mitigation may take the form ofsolid site hoardings. Depending on the scheduling ofworks there may be a need to consider specificarrangements to manage night-time constructionimpacts for residents at Moy who are close toLynebeg Rail Underpass. Such arrangements willbe agreed between the Contractor and residents.

To reduce impact on residentsduring construction.

None required

Table 21.11: Materials

MitigationItem


Timing ofMeasure

Description Mitigation Purpose/Objective SpecificConsultation orApproval Required

Standard A9 MitigationSMC-M1 Throughout


Prior to construction a Site Waste ManagementPlan (SWMP) will be developed as part of theCEMP (see Mitigation Item SMC-S1) to set outhow all construction phase materials will bemanaged and it will be updated regularly duringthe construction of the Proposed Scheme. TheSWMP will identify, prior to the start ofconstruction works, the types and likelyquantities of wastes that may be generated and itwill set out, in an auditable manner, how wastewill be reduced, re-used, managed and disposedof in accordance with relevant Zero WasteScotland Guidance. The SWMP will include

To set out how all constructionphase materials will bemanaged.

Consultation andapproval from theLocal Authorityand/or SEPA asapplicable toregulatoryrequirements.



MitigationItem


Timing ofMeasure


specific materials management and soilmanagement plans developed under voluntaryand industry regulated Codes of Practiceincluding:

· Construction Code of Practice for theSustainable Use of Soils on Construction Sites(DEFRA, 2009);

· Land Remediation and Waste ManagementGuidelines (SEPA, 2009); and

· Promoting the Sustainable Reuse ofGreenfield Soils in Construction (SEPA, 2010).

Appropriate waste minimisation and associatedKPI targets will also be included.

SMC-M2 ThroughoutProposed Scheme


The Contractor will comply with all relevant wastelegislation in relation to waste handling, storage,transport and disposal (e.g. The WasteFramework Directive) and consultation withSEPA for advice on waste practice, licences andexemptions where appropriate.

To ensure waste handling,storage, transport and disposalis compliant with all relevantwaste legislation.



Pre-Construction,Construction&Post-Construction

The Contractor will apply the principles of the‘Waste Hierarchy’ (Prevention, Prepare forReuse, Recycling, Other Recovery, Disposal) tominimise waste generation, maximise re-use ofsite-won materials on-site and minimise the needfor disposal of waste. Where re-use is notpossible within the Proposed Scheme, alternativere-use and recycling options will be sought off-site with disposal the final option, with clearjustification of options provided.

To reduce waste generation,maximise re-use of site-wonmaterials on-site and reducethe need for disposal of waste.

None required


Pre-ConstructionConstructionOperation

The Contractor will implement Zero WasteScotland’s Design for Resource EfficientConstruction Principles.

To make the best use ofmaterials, over the lifecycle ofthe Proposed Scheme’s built

None required



MitigationItem


Timing ofMeasure


assets, to reduce embodiedcarbon emissions


Pre-ConstructionConstruction

The key material elements (i.e. aggregates,asphalt, cement, precast concrete products,ready-mixed concrete and steel) used within theproposed scheme shall be specified to beresponsibly sourced.

To reduce impacts associatedwith the extraction andmanufacture of materials.

None required



All timber and timber products shall be sourcedfrom independently verifiable legal andsustainable sources.

To reduce impacts associatedwith the extraction andmanufacture of materials.

None required



Alternatives to primary aggregates shall beinvestigated, including opportunities to userecycled or secondary aggregates in theconstruction of the Proposed Scheme; eithersourced from construction, demolition andexcavation waste obtained on-site or off-site; orsecondary aggregates obtained from a non-construction or post-consumer or industrial by-product source.

To reduce impacts associatedwith the extraction, manufactureand transport of materials andto reduce waste generation,maximise re-use of site-wonmaterials on-site and reducethe need for disposal of waste.

None required

n/a (note) n/a n/a Further to the above, the following mitigationitems detailed in Table 21.2 (Community andPrivate Assets), Table 21.4 (Geology, Soils andContaminated Land), Table 21.5 (Road Drainageand the Water Environment) and Table 21.9 (AirQuality) will be implemented to ensure theappropriate management and handling ofmaterials: SMC-CP8, SMC-G3, SMC-G8, SMC-G9, SMC-G11, SMC-G15, SMC-W2, SMC-W6 toSMC-W10, SMC-AQ1 and SMC-AQ2.

To ensure the appropriatemanagement and handling ofmaterials:

n/a



21.2. Referencesi CIRIA (2015) SUDS Manual C753ii http://www.netregs.org.uk/environmental-topics/pollution-prevention-guidelines-ppgs-and-replacement-series/guidance-for-pollution-prevention-gpps-full-list/ (Accessed 13/04/2016)iii SNH (undated) Otters and Development http://www.snh.org.uk/publications/on-line/wildlife/otters/mitigation.aspiv SEPA (2000) Ponds, Pools and Lochans: Guidance on good practice in the management and creation ofsmall waterbodies in Scotlandv SEPA (2008) Engineering in the Water Environment Good Practice Guide: Bank Protection Rivers andLochsvi SEPA (2010) Engineering in the Water Environment: Good Practice Guide - River Crossingsvii SEPA (2015) Position Statement WAT-PS-06-02 - Culverting of Watercourses – Position Statement andSupporting Guidance.

Documents

21. Schedule of Environmental Commitments...A9 Dualling Northern Section (Dalraddy to Inverness) A9 Dualling Tomatin to Moy Stage 3 Environmental Statement A9P12-AMJ-EGN-Z_ZZZZZ_ZZ-RP-EN-0026