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Lambs Technology Park | Section 8
HER.Additionaltothisarerecordsofarchaeologicalexcavations.Thereareno historic hedgerows within the Site, although the hedgerow along the southernboundaryispartiallyshownonthe1840TitheMapandthereforequalifiesas“important”underthehistoricandarchaeologicalcriteriaoftheHedgerowRegulations1997.Thishedgerowisnotadesignatedasset,butretainssomesignificanceasacomponentwithinthelocalhistoriclandscape character. Within the wider area there are two Scheduled Monuments, one Grade II* Listed Building and 13 Grade II Listed Building.
WithintheSitethereisonenon–designatedhistoricassetrecordedontheHER;thisistheoriginalbrickworksfoundedinthelate1800’s.Twobuildings shown on the 1912 OS map associated with the brick works arestillpresentwithinthesite;theserepresenttheearly20thcenturysmallerbrickworks,thewashmillrecordedonthefirsteditionOSmapistheearliestevidenceofbrickortilemakingonthesiteandpre-datestheacceptedfoundationoftheworksin1897.Noabovegroundevidenceforthis feature survives.
GuidanceregardingbrickworksislocatedwithintheListingSelectionGuidefor Industrial Buildings (English Heritage, 2011) which discusses industrial buildingsasawhole(thereishowevernospecificdiscussiondirectlyrelatingtobrickworks).Basedontheseselectioncriteria,itisconsideredthat although the early 20th century structures within the site are of some historicalvalue,theyarenotofaqualityorconditiontowarrantstatutorydesignation,andatbestcanbeseenasbeingoflowheritagevalue.
The proposed development may have an impact on some of the current extant structures of modern origin, these are mainly storage containers and
temporaryunits.Thebuildingsshownonthe1912OSmapstillextantonSitemayundergoalterations.
ModerndevelopmentwithintheSitehasresultedinextensivealterationtothe historic landscape character. Surviving features of the former local historic landscape character comprise the hedgerow along the southern boundary, whichqualifiesas“important”.However,thisdoesnotcompriseadesignatedheritageassets,anddonotconferaspecificlevelofheritagesignificance.
Setting assessment
Two Scheduled Monuments, one Grade II* Listed Building and 13 Grade IIListedBuildingsandSouthParkConservationAreawereassessedwithregardtopotentialchangeswithintheirsettinghavinganimpactontheirsignificance,asdescribed.However,ithasbeenconsideredthatthesitedoesnotimpactupontheirsettingnordoesitformpartofthesettingofanydesignated asset.
Conclusion
It is clear from the assessment undertaken by Cotswold Archaeology that it can be concluded that there are no overarching heritage constraints and the Site could accommodate the proposed uses which would not harm the cultural heritage resource within the surrounding area.
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Arup have undertaken an assessment of hydrology within the local area, including in respect of flood risk and drainage, they conclude that there is very low risk in terms of fluvial or surface water flooding.
The site is located in southern England approximately 50km inland at an elevationofapproximately75mAODatthecentreofthesite.Thereisnoriskfromtidalflooding.
The site is located at the catchment boundary between the Rivers Medway to the east and the River Mole to the west. The main part of the site lies within the catchment of the Ray Brook, the watercourses leavingthesitetotheeastoutfallingviatheRayandEdenBrookstothe River Eden at Edenbridge. The River Eden is a tributary of the River Medway, which it joins at Penshurst, 9km upstream of Tonbridge.
ThesouthwesternportionofthesitehoweverappearstojuststraddlethetopographiccatchmentboundaryandsheetflowsinextremeconditionsmayoutfallintotheheadwatersofatributaryoftheRiverMole to the west, which the watercourses join via the Salfords Stream betweenHorleyandReigate.Inaddition,dischargefromasurfacewaterattenuationfacilitylocatedinthislowpartofthesitecoulddischargetothe western catchment.
As the site is located at the very top of the catchment, the Environment Agency’s broadscale modelling does not provide site level detail on the Flood Map for Planning or the Map of Risk of Flooding from Rivers and Sea(modellingoutput).TheseplansdohoweverdefinetheFloodZonewithin which the site is designated.
The site is shown in Low Probability Flood Zone 1, within which the probabilityoffloodingisestimatedtobelessthan0.1%AnnualExceedanceProbability (AEP), as shown on the Environment Agency’s maps.
Surface water
TheriskofsurfacewaterfloodingisshownontheEAwebsitemapsasgenerallybeingverylowapartfromanareapassingtothewestoftheexistingdeveloped area of the Business Park. Other isolated areas shown in the site areexistingpondsandlocalisedshallowdepressionswithintheareaofthesite now used for aggregate recycling and inert waste recovery.
Lowriskmeansthateachyearthisareahasachanceoffloodingofbetween0.1%and1%.Mediumriskisforchanceoffloodingofbetween1%and3.3%,whilsthighriskisforachanceoffloodingofgreaterthan3.3%.
Floodingfromsurfacewaterisdifficulttopredictasrainfalllocationandvolumearedifficulttoforecast.Inaddition,localfeaturescangreatlyaffectthechanceandseverityofflooding.ForexampletheEAplansbelowforthe‘low probability’ suggest that the origin of the surface water risk is the railway line to the north.
Proposed levels and the surface water strategy will be designed to ensure that surface water is directed away from buildings and into areas with less sensitivitywithinthesiteboundary.Overlandfloodrouteswillbeconsideredand developed at the next design stage.
Hydrology
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Historic flooding
Nohistoricfloodproblemswereidentifiedanywhereinthevicinityofthesitein the Tandridge District SFRA.
Groundwater
Theareaisnotnotedasbeingsubjecttogroundwaterfloodinganditislikelythattherailwaycuttingandtunneltothenorthwestcontrolgroundwaterlevels in the vicinity of the site to some extent.
ThesiteisnotwithinanyGroundwaterVulnerabilityorSourceProtectionZone;therearenosuperficialorbedrockaquiferdesignationscovering the area.
Flood risk from the site
Thequarryareaistobere-landscapedaspartofthedevelopmentproposals.
The landscaping of the area provides the opportunity for controlling and restrictingrunofffromthesiteinastructuredwaytoensurethatsurfacewater from the development area as a whole does not impact on reaches downstream either now or in the future as climate change results in more intense storms and greater storm depths.
A detailed surface water management scheme will be developed in due course,itisexpectedthiswouldbesubjecttoaconditionrequiring finaldetailstobeapprovedbythelocalplanningauthoritybeforedevelopment commences.
Potential impact on hydrology
ThepreliminaryfloodriskassessmentidentifiesthesiteissituatedinLowProbability Flood Zone 1 (<0.1% AEP/1 in 1000 year RP) and that neither a SequentialTestoranExceptionTestisrequiredfordevelopmentonthesite.
Theassessmentdoesshowthatthereisalowprobabilitysurfacewaterfloodriskaffectingthesite.Detailedlandscapeandsurfacewaterdesigncouldaccommodatethisthroughon-sitefloodstorageattenuationbeforedischargeto downstream watercourses.
The reinstatement of the quarry area provides the opportunity for restrictingflowsfromthesitetoexistinggreenfielddischargeratesorbetter,andcateringforclimatechangeimpacts.Indeed,thedetailedquarryreinstatement and landscaping proposals will include measures to ensure that developmentplotswithinthesitehavealevelofprotectionofbetterthan0.1%AEP(1in1000yearRP)fromallsourcesoffloodrisk.Inaddition,onand site surface water discharges will be further restricted to contribute to reductionoffloodriskdownstream.Itisexpectedthatthiscanbedealtwiththrough the detailed design stage.
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Sol Environment have undertaken a summary of the waste baseline situation within Surrey. The baseline demonstrates the significant amount of waste generated from within Surrey that is dealt with either out of the Country or out of County. It concludes that there is significant scope for the proposal to treat locally derived waste in a sustainable manner.
Adetaileddescriptionoftheproposalsissetoutonpage30,however,itisnotedforeaseofreferencethatthebiofuelproductionplantwillutiliseRDFfuelimportedbyrailfromalocalsupplier(suchasDay’s)utilisingtheirrailsidingconnectingtoWTLamb’sprivatelyownedrailsiding.Day’sareoneof a number of local based recycling and aggregate supplier which operates within the County (their nearest usable railheads are located within Woking and Salfords). Compacted or bailed material can be obtained from within Surrey and supplied to the rail siding.
Therenewablebiofuelproductionplantwillprocessapproximately150,000tonnes of waste material per year sourced from municipal, commercial andindustrialprocessingfacilities.AllRDFwillbepre-treatedtoensurethat all recoverable and recyclable materials are removed prior to being transported to the facility. Ordinarily, the waste to be handled by the Plant isunrecyclableandwouldbesenteithertowasterecoveryfacilitiesortolandfill.Instead,thisprocesswillseethewastebeingrecycledtocreateabiofuel.
ThissectionsetsoutthewastebaselineoftheLambsBusinessParksiteandSurrey and the South East of England. The baseline is set out to provide the contextforthegenerationofandthesuitabletreatmentcapacityforwastearising in Surrey. In this case Arup and Sol Environmental have focused
on both commercial and industrial waste streams (C&I) and Local Authority Collected Waste (LACW) in Surrey County Council’s (SCC) Waste Needs Assessment(Table24)(May2019)andfigure52opposite.
Current Waste Generation in Surrey (These waste figures relate to the area within the Surrey Joint Municipal Waste Management Strategy, covering the 11 District and Borough Council Waste Collection Authority).
ThetotalwastearisingintheSWPareawasreportedtobe3,711,000tonnesin2017,(seeFig52).Atotalof536,000tonnes(14%)wasrecordedasLACW,682,000tonnes(18%)asC&Iwaste,and2,494,000tonnes(67%)asCD&Ewaste.
Ofthetotalwasteproduced,in2017,855,000tonnes(23%)wassenttolandfill,2,137,000tonnes(58%)wasrecycledand64,000tonnes(1.7%)wassenttoorganic/foodwasteprocessingand655,000tonnes(18%)wassenttoother recovery.
The 212,000 tonnes of residual LACW sent to energy recovery were exported from the County for treatment. The LACW was recovered at Allington energy fromwaste(EfW)facilityinKent(41%),LakesideEfWinSlough(10%),StobartBiomass,Thurrock(8%)andfacilitiesoutsidetheUK(41%).
Waste
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Waste Stream Local Authority Collected Waste Commercial and Industrial Waste Construction, Demolition and Excavation Total
tonnes tonnes tonnes
Recycled Waste 268,000 50% 423,000 62% 1,446,000 58% 2,137,000
Organic/Food Arisings 37,000 7% 27,000 4% 0 0% 64,000
Other recovery (including energy recovery)
204,000 38% 27,000 4% 424,000 17% 655,000
Landfill 27,000 5% 205,000 30% 623,000 25% 855,000
Total 536,000 682,000 2,493,000 3,711,000
Fig 52: summary Waste Management Profile for main waste streams in Surrey 2017 (taken from table 24 of the Waste Needs Assessment 2019)
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Waste infrastructure capacity in Surrey and the South East
Theexistingavailablewasteinfrastructurecapacityandtheyearlyinputtonnage, published by the Environment Agency (EA), for Surrey and the South East of England regional area is shown in Fig 53. The LACW and C&IincinerationisassumedtobeEfWcapacityinthiscontext.
There is no EfW capacity available in Surrey, meaning that 100% of waste sent for recovery is exported outside the County, as reported above.Thisisconfirmedinpara3.2.1.2ofthe2019WasteNeedsAssessment.
The total EfW capacity that is currently available in the South East of Englandisoperatingalmostatcapacity,showninFig53,withonlyafurther 45,002 tonnes of remaining capacity across the region.
SueziscurrentlybuildinganEcoParkatCharltonLane,Shepperton.Thefacilityisbeingdeveloped,underinstructionfromSurreyCountyCouncilfor the treatment of a third of the LACW waste produced in Surrey. The EcoparkwillincludeagasificationEfWfacility,whichwilltreatupto55,000 tonnes a year of waste collected from homes in northern Surrey and also from some local businesses. It is due to open in 2019/20.
InlinewiththeJointMunicipalWasteManagementStrategy,SurreyCountyCouncilismovingtowardsitstargetforsendingzerowastebeingtolandfillby2019/20.
This means that, the current 232,000 tonnes per year of LACW and C&I wasteproducedinSurreythatiscurrentlysenttolandfill(seetable24ofthe2019WasteNeedsAssessment)willneedtobetreated.Ifthetotalnon-hazardouswasteinputtolandfillinSurreyisconsideredthisrisesto855,000tonnesperyear,whichmayincludebothCD&Ewasteandnon-hazardouswaste.
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Fig 53: waste Infrastructure Capacity and Annual Input Rates for the Local and Regional Area in 2015
Facility Type Surrey South East of England
Capacity (tonnes) Annual Input Rate (tonnes) Capacity (tonnes) Annual Input Rate (tonnes)
HazardousLandfill - - 1,518,300 63,304
Non-hazardousLandfill 12,353,217 668,350 115,769,544 5,605,900
InertLandfill 15,001,363 512,665 63,939,003 2,718,301
TotalLandfill 27,354,580 1,181,015 181,226,847 8,387,505
LACW and C&I Waste Incineration
0 0 2,062,350 2,017,348
OtherIncineration 5,200 629 637,340 163,945
TotalIncineration 5,200 629 2,699,690 2,181,293
Waste Transfer 553,759 6,724,530
Waste Treatment 1,825,741 9,476,281
Metal Recycling 4,595 1,271,048
Total Treatment and Waste Transfer
0 2,384,095 0 17,471,860
TOTAL 27,359,780 3,565,738 183,926,537 28,040,657
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High level consideration of proposals
ThedevelopmentoftheproposedrenewablebiofuelproductionplantatLambsBusinessParkwouldhavevariousassociatedopportunitiesandconstraints.
Opportunities
The proposed facility could accept locally sourced waste material that is currentlyexportedoutofCounty.Thiswouldbeinlinewiththenationalwaste planning policy regarding the proximity principle of waste management.
The waste baseline (fgure 55 over) shows that there is currently 444,000 tonnes per year of LACW and C&I waste which could be used within the biofuelproductionplant.Only212,000tonnes(or47.7%)ofthisiscurrentlysent to other recovery, mostly out of County. To meet the SWP strategy aim ofzerowastetolandfillasignificantincreaseinwastedivertedfromlandfillwill be required. The combined capacity of the Shepperton EfW facility and theproposedLambsBusinessParkrenewablebiofuelproductionplantfacility(with a capacity of 150,000 tonnes per year) would provide the County with 205,000tonnesperyearEfWandtreatmentcapacity,97%ofthewastecurrentlybeingexportedoutofSurreytoEfWand46%oftheresidualLACWand C&I waste currently produced in Surrey.
Thesiteiswellpositionedforarenewablebiofuelproductionplantasitislocatedawayfromahighdensityofresidentialpropertiesandothersensitive
Future Waste Generation and Management Capacity
Between2017and2035,110,808additionalnewhomeswillberequiredtomeetneedsandthelocaleconomyisforecasttogrowby3.1%.Usingtheseinputspredictedwastefiguresfortheperiod2018to2035havebeenpublished (table 54) within the Waste Needs Assessment (2019).
LRMPlanninghascriticallyreviewedtheCountyCouncil’sforecastsandhaveidentifiedanumberofissues.Accordinglyarevisedforecasthasbeenproducedwhichidentifiesthatthetotalwastearisingat2035willbe4,150,020 tonnes.
Year Waste from Households
Commercial & Industrial
Construction, Demolition & Excavation Waste
2017 536,000 682,000 2,494,000
2035 601,020 1,055,000 2,494,000
Fig 54: waste arising forecast
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Lambs Technology Park | Section 8
receptors.
The current site land use is characterised by a range of light industrial activitiesandhasalonghistoryinbrickmanufacturing.Whilethesitelandallocationdoesnotincludeforwastemanagementtherearewasteactivitiescurrentlycarriedoutonthesite,aspartoftheexistinguse.TheLambsBusiness Park site includes a rail head. The majority of RDF would be brought tositeusingthisrailheadwherepossible,limitinganypotentialtrafficimpacton the local road network. There would only be a minor impact from the Lambsrenewablebiofuelproductionplantfacilityfromstaffandmaintenancevehicles.
RDFwillbedeliveredtotheexistingrailheadsoperatedbyalocalsupplier(suchastheDayGroupwhohavefacilitiesatWokingandSalfords)foronwardtransportationtothesitemeaningthatsupplyofRDFtositeshouldnotimpactthetrafficnetworkanywhereinthecounty.
NetworkRail(inaletterdated7thMarch2019)indicatedthatWTLambscould“effectivelystartrunningtrainstomorrow”andthattherefurbishmentandreconfigurationtoaccommodatetheproposedcontainerisedRDFtrainsis“entirelyinlinewiththeoperationalparametersofournetwork”.
Theletterconcludesbysayingthat“yourrailfeddevelopmentalignsbothwithGovernmentpolicyaroundmodalshiftandNetworkRail’sforecastsforfurtherrailfreighttraffic;wethereforewelcometheresumptionofrailfreighttrafficfromGodstone”.
Constraints
Itisconsideredthattheexistingtransportnetworkcanaccommodatetheproposalswithoffsitejunctionimprovements.MilesWhitehaveassessedthepotentialimpactsonthelocaltransportnetworkbasedonaworsecasescenario whereby the rail siding is not available.
Asummaryofthefindingsaresetoutwithinthisdocumentandcanbeviewed in the Miles White Transport Note. Summarily this concludes that there is likely to be an increase of trips from the site, but it advises that improvementscanbemadetotheA22/TilburstowHillRoadjunction(figures45and46).
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Impact of development
Theproposedfacilitywoulddevelopaleadingrenewablebiofuelproductionplant at the Lambs Business Park site. The facility would have a capacity to treat approximately 150,000 tonnes of RDF.
Currently all RDF wastes produced within Surrey are exported for treatment outside the County. For the purposes of this report we have assumed that the proximity principle would be employed in sourcing waste from Surrey and the surrounding area which is in line with the Proximity Principle set out in theupdatednationalwasteplanningpolicy,PlanningforSustainableWasteManagement.
Theproposedrenewablebiofuelproductionplanthasthepotentialtoprovidetreatment capacity within the county for up to 32% of the current waste thatissuitableforrecoverythatiscurrentlysentoutofcountyorlandfilled(463,000tonnes).
TheJointMunicipalWasteManagementStrategyforZeroWastetoLandfillwill result in the need for more waste to be treated. Some of this waste will be diverted higher up the waste hierarchy meaning that further capacity will be required.
TogetherwiththeoperationoftheSuezEfWfacility,currentlyinconstructionat Shepperton, this facility would reduce the need to export residual waste out of the county.
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Current Situation (Surrey) Local Authority Collected Waste (tonnes per year)
Current waste sent to EfW from Surrey 212,000
Current capacity of EfW in Surrey 0
LACWcurrentlylandfilled 27,000
C&Icurrentlylandfilled 205,000
Total capacity required assuming all LACW and C&I waste suitable for recovery
444,000
FutureWasteGeneration(2035)
LACW 566,000
C&I 1,055,000
Total 1,621,000
Future & proposed Infrastructure
Veolia Shepperton EfW Facility 55,000
Total Future Proposed Infrastructure 55,000
Deficit -1,566,000
Lambs Business Park 150,000
Overall Deficit with Lambs Business Park (2033) 1,416,000
Fig 55: summary of the assumed current tonnage of waste sent to EfW, the infrastructure available in Surrey, future waste generation for relevant waste streams and the effect the proposed development.
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Conclusion9.1Introduction
This document has been prepared by LRM Planning on behalf of WT Lamb. Its sets out development proposals for Lambs Business Park that would enabletheconstructionoftwodatacentres,acombinedcycleenergycentrewithbiofuelproductionplantandtheintensificationandredevelopmentofother parts of the site.
WTLambhavebeenoperatingatthesitesince1918.Originallythecompany’sfocuswasintheproductionoftilesandhighqualitybricksbuthasmorerecentlyinvolvedtherestorationoftheformerclayworkingsandmanaging the business park which in areas is becoming derelict and there is a strong risk that some buildings will soon become vacant.
It is now proposed to invest in the long term future of the Park. The proposed uses would regenerate Lambs Business Park as a high quality, highly productivetechnologycluster.
Inpreparingandrefiningproposalsasignificantamountofbackgroundworkhas been undertaken by sub consultants on behalf of WT Lamb. This has shaped and informed the proposals and is expected to form the basis for future detailed work.
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