Appendix 9.04 – Dormouse Survey Report...A30 Temple to Carblake Dormouse Report A30 Dormouse FINAL...

Appendix 9.04 – Dormouse Survey Report

Planning Act 2008 Infrastructure Planning The Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 Regulation Number: 5(2)(a) Author: A30 Temple to Higher Carblake Improvement

Team, Cornwall Council Document Reference:

TRXCP311/PA/6.03/APP 9.04

PI Reference TR010014 Document Date Version Note 07 August 2013 0 First Issue

Contents

1. Dormouse Survey Report

Figures Tube Location Map TRXCP311_PA_6.03_FIG_09.04.01

April 2013

A30 TEMPLE TO CARBLAKE

DORMOUSE REPORT

Cornwall County Council

3513000F-HLV

Final

A30 Temple to CarblakeDormouse Report

3513000F-HLV

Prepared forCornwall CouncilCornwall Council

Carrick HouseTruro

Pydar StreetTR1 1EB

0300 1234 100

Prepared byParsons Brinckerhoff

The ForumBarnfield Road

ExeterEX1 1QR

01392 229700 www.pbworld.com

Report Title : A30 Temple to Carblake Dormouse Report

PIMS Number :

Report Status : Final

Job No : 3513000F-HLV

Date : April 2013

DOCUMENT HISTORY AND STATUS

Document control

Prepared by Lauree KalinowskiChecked by(technical) Gemma Cookson

Approved by Ursula DigbyChecked by(quality assurance) Charles Morrison

Revision details

Version Date Pagesaffected Comments

1.0 April 2013 Final

A30 Temple to Carblake DormouseReport

A30 Dormouse FINAL 220613 Prepared by Parsons Brinckerhofffor Cornwall County Council

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CONTENTSPage

Introduction 11

1 Introduction 131.1 Overview 13

1.2 Site Context 13

1.3 Dormouse Ecology 13

1.4 Legislation 14

Methodology 15

2 Methodology 172.1 Desk Study 17

2.2 Field Survey 17

2.3 Survey Limitations 19

Results 21

3 Results 233.1 Desk Study 23

3.2 Overview of Dormouse Study on A30 23

3.3 Field Survey 25

Discussion and recommendations 27

4 Discussion and recommendations 294.1 Discussion 29

4.2 Recommendations 29

Conclusions 31

5 Conclusions 33

SECTION TEXT HERE Error! Bookmark not defined.

6HEADING TEXT HERE Error! Bookmark not defined.

Appendices 38

7 Appendix 1 397.1 Dormouse Survey Results. 39


A30 Dormouse FINAL 220613 Prepared by Parsons BrinckerhoffApril 2013 for Cornwall County Council

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SECTION 1

INTRODUCTION



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1 INTRODUCTION

1.1 Overview

1.1.1 Parsons Brinckerhoff (PB) were commissioned by Cornwall Council to undertake anecological study of the proposed widening of the A30, one of the major trunk roadsthrough Cornwall, where there is a proposed dualling of a 4.5km length of singlecarriageway between Temple and Carblake. This section passes through BodminMoor in Cornwall.

1.1.2 Following an Extended Phase 1 Habitat Survey carried out in April 2012, a commondormouse (Muscardinus avellanarius) study was recommended. Suitable habitat andrecords of dormice were identified within the far western end of the scheme, wherethere has been a long term study of dormice.

1.1.3 The purpose of this study was to identify likely presence/absence of dormice withinsuitable habitats to be affected by the scheme. If presence were found, the studywould inform the potential effects of the development on the local population and themeasures required to mitigate or compensate any adverse effects.

1.2 Site Context

1.2.1 The A30 is a major trunk road running through the centre of Cornwall from West toEast. The A30 forms one of the most important routes through the county and isunder pressure during the summer months due to high numbers of tourists. Thesection running between Temple and Carblake is a traffic pinch point, where the dualcarriageway narrows to single carriageway in both directions. The development willtake place between grid references SX 10926 70830 at the western end and SX13696 73695 at the eastern end.

1.2.2 The Scoping of suitable habitat for dormice included a search for suitable habitatusing aerial maps for common dormouse along the section of the road to be widenedwhich is 4.5 km in length; with 250m either side of the centre line of the carriagewayforming a corridor 500 m along the current highway (‘the scheme’).

1.2.3 The Scoping showed that the distribution of dormouse habitats within the schemefootprint was from the midway point of the scheme west bound towards where there isa long term study of dormice._ It is impractical to survey all this area therefore an areaof key habitat within the midway point of the scheme connected to woodland and theknown population was subjected to survey.

1.2.4 Many of the habitats surrounding the site are designated for their nature conservationinterest. The north eastern most part of the site falls partly within the Bodmin MoorNorth Site of Special Scientific Interest (SSSI) and the eastern half of the site andmuch of the surrounding moorland area fall within Bodmin Moor Area of OutstandingNatural Beauty (AONB). In addition, there are two County Wildlife Sites immediatelyadjacent to the site including South West Moors to the south and Helligan Woods tothe west. There are several residential properties within the site and a fewbusinesses such as Temple Fisheries. The area is known for its ecological andcultural heritage.

1.3 Dormouse Ecology

1.3.1 Dormice are small arboreal nocturnal rodents of the Gliridae family that live at lowpopulation densities. They are primarily found in highly diverse broadleaved



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woodlands with well developed understorey’s and species rich hedgerows (Bright etal., 2006)1 but have also been found within reed beds, culm grassland and coniferplantations (Chanin and Woods, 2003)2. These findings in the UK are consistent withresearch in wider Europe (Chanin and Gubert, 2012)3.

1.3.2 Dormice are known to be present in Cornwall, and are largely restricted to the southof England, although their distribution is patchy possibly due to their specialistecological requirements (Chanin and Gubert, 2012) and sensitivity to weatherconditions (Bright et al., 2006).

1.3.3 Dormice feed mainly upon flowers, fruits, nuts, seeds, insects and caterpillars (Brightet al., 2006).

1.3.4 Dormice were considered to be primarily arboreal without crossing open ground,constructing their nests from honeysuckle bark in the woodland understorey in thesummer, descending to the ground to hibernate within roots of trees and moss in thewinter (Bright and Morris, 1993)4. Further research, including a PIT tagging study onthe A30 in Cornwall and other studies in Europe, have however confirmed thatdormice will traverse the open ground to access food sources and/or for dispersal,and have been found to cross the dual carriageway at the western end of the A30dualling scheme (Chanin and Gubert, 2012).

1.3.5 Dormice spend much of their time in a dormant state, entering winter hibernation inOctober or November until April or May (Bright and Morris, 1993), although this canbe shorter in Cornwall due to the warmer climate (pers.comm Dr Paul Chanin).Dormice breed between May and September and can enter summer torpor when foodis short or the weather conditions curtail foraging. Summer torpor is used to saveenergy and dormice may enter this state on a regular basis (Bright et al.,2006).Further dormouse ecology information can be found in The DormouseConservation Handbook (Bright et al., 2006).

1.4 Legislation

1.4.1 The dormouse is a European Protected Species (EPS) and is therefore fully protectedunder Schedule 2 of the Conservation of Habitats and Species Regulations 2010 (asamended), the Wildlife and Countryside Act (1981) as amended and CountrysideRights of Way (CRoW) Act (2000).

1.4.2 It is an offence to deliberately kill, injure or capture dormice; deliberately disturb them;and damage or destroy dormouse breeding sites or resting places.

1.4.3 The UK and Cornwall’s Biodiversity Action Plans also list dormice as a PrioritySpecies. Dormice are also listed as a Species of Principal Importance under theNatural Environment and Rural Communities (NERC) Act (2006).

1 Bright, P. W., Morris, P. A. & Mitchell-Jones, A. J. (2006) The Dormouse Conservation Handbook, 2nd Edition.Natural England, Peterborough.2 Chanin, P and Woods, M.J., 2003 Surveying dormice using nest tubes. Results and experiences from the SouthWest Dormouse Project. English Nature Research Project Report 524. English Nature, Peterborough DEFRA(2004). European Species Guidance Note, DEFRA, Bristol.3 Chanin, P. & Gubert, L., 2012. Common dormouse (Muscardinus avellanarius) movements in a landscapefragmented by roads. Lutra 55(1):3-15.4 Bright,P. and Morris,P. 1993. A Practical Guide to Dormouse Conservation. Occasional publication No.11 TheMammal Society, London



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SECTION 2

METHODOLOGY



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2 METHODOLOGY

2.1 Desk Study

2.1.1 A desk study was completed in April 2012 as part of the Extended Phase 1 HabitatSurvey. A search for any statutory or non-statutory designated sites where dormiceare the interest feature within 10km was undertaken.

2.1.2 Records of dormice were requested from the Environmental Records Centre forCornwall and the Isles of Scilly (ERCCIS) within 2 km of the site.

2.1.3 Detailed studies of the dormouse population have previously been carried out at thewestern end of the site by Chanin and Gubert (2012) and this information wasreviewed and summarised as part of the desk study.

2.2 Field Survey

2.2.1 The Scoping identified areas of suitable habitat for dormice within the schemefootprint including woodland and scrub and species rich hedgerows. It is impracticalto survey the entire length of the widening scheme therefore one additional key areato that of the long term study of dormice at Cardinham Downs was focussed upon.This was at Preeze Cross Junction where there was connectivity to woodland and thelong term study area. East of this area, habitats were unsuitable due to isolation fromwoodland or hedgerows and was therefore scoped out. PB Ecologists undertook thesurvey in the suitable habitat at Preeze Cross Junction, 1.3 km east of the knownpopulation.

2.2.2 This survey surveys was carried out using the standard methodologies recommendedin The Dormouse Conservation Handbook and Chanin and Woods (2003). Adormouse likely presence/absence survey was conducted in suitable habitat withinthe survey area described in Section 1.2.2. One hundred dormouse nest tubes wereset up at approximately 20 m intervals on 28th May 2012 in two groups as shown inFigure 1. The two groups were located in scrub along both sides of the road (A) andwithin a mosaic of semi natural broadleaved woodland and marshy grassland withscrub (B).

2.2.3 These tubes were checked on the following dates:

16th July 2012;

8th August 2012;

19th September 2012;

30th October 2012; and

14th November 2012.

2.2.4 The Dormouse Conservation Handbook specifies the index of probability of findingdormice present in nest tubes in a given month throughout the active dormouseseason (Table 2.1). A score of at least 20 must be obtained for an adequate surveyto confirm likely absence. Natural England5 states that the “score applies from when

5 Natural England. Interim Natural England Advice Note – Dormouse surveys for mitigation licensing– best practice and common misconceptions. WML-G37 (12/11)



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the nest tubes are deployed to when they are removed, not just the months where thetubes are physically checked”. The tubes were in-situ between 28th May and 14th

November 2012.

2.2.5 The survey visits were carried out once a month after the month of June to let thetubes bed in and increase the likelihood of dormice using them. The guidance statesthat the tubes should be checked as a minimum every two months.

Table 2.1: index of probability of finding dormouse in a given month (DormouseConservation Handbook)

Month Points (50 tubes) Points (100tubes)

April 1 2

May 4 8

June 2 4

July 2 4

August 5 10

September 7 14

October 2 4

November 2 4

2.2.6 At least 20 points were achieved for Group B, by leaving 50 tubes on site betweenJune and November inclusive; thereby providing an adequate survey to determinelikely absence. However, the finding of surveys by Chanin (2003) of ‘false negatives’in the southwest warrants consideration.

2.2.7 Given the behaviour of dormice west of the site where dormice are found to traversethe road, a further 50 tubes were distributed, with 25 on each side of the road infragmented scrub habitat (Group A in Figure 1) which was severed from the coresuitable habitat. This was considered to extend the survey area and increase theprobability of finding dormice present in the area. As stated in Natural England’sStanding Advice Species Sheet6, if twice as many tubes are used (100 tubes) thenthe probability score is doubled, meaning the survey area as a whole scored 40 pointsto include the fragmented habitats; with at least 20 obtained in core habitat.

2.2.8 The tubes were checked by a licensed ecologist and an accredited agent workingunder license number 20120781. The tubes were inspected using either a mirror on along handle or the tube would be carefully slid open to check for anything within.

2.2.9 If evidence of inhabitants was noted, the tube was carefully removed from the branchand opened fully within a large clear bag in order to prevent escape of any inhabitantsand allow the nest/evidence to be inspected fully. The tube was then replaced in itsoriginal position with the nest still intact within.

6 Natural England Standing Advice Species Sheet: Hazel dormouse (DOR)



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2.3 Survey Limitations

2.3.1 The areas surveyed during this study represented the most suitable habitats fordormice that were likely to be impacted by the scheme. Due to the size of the siteand the small land take envisaged, this is not deemed to be a constraint to the survey.

2.3.2 Dormice are known to inhabit the suitable habitat at the western end of the site, anddetailed studies have taken place assessing this population in recent years. It wastherefore deemed not necessary to survey this area, as the presence of dormice hadalready been determined. This is not deemed to be a constraint, and the populationwill be mitigated for as appropriate.

2.3.3 A small number of tubes within one area were inaccessible during part of the surveyperiod. However, most of these were located and checked by the end of the surveyperiod. In total two tubes were found to be missing by the end of the survey, allothers were located and checked and as such this limitation was not deemed to besignificant.



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SECTION 3

RESULTS



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3 RESULTS

3.1 Desk Study

Designated Sites

Statutory Nature Conservation Sites

3.1.2 There are no European sites designated for dormice under the Habitats Directive(Council Directive 92/43/EEC) within the 10km search area.

3.1.3 There are no nationally designated Sites of Special Scientific Interest (SSSI)designated under the Wildlife and Countryside Act (1981) (as amended)andstrengthened by the Countryside Rights of Way (CRoW) Act (2000) and NERC Act(2006); within the 10 km search area which have dormice as interest features.

Non-Statutory Nature Conservation Sites

3.1.4 There is one non-statutory County Wildlife Sites (CWS) within the 2 km search area,which has dormice as an interest feature, Helligan Woods CWS is immediatelyadjacent to the proposed site (refer to Figure 1).

Table 3.1: Non-statutory designated sites found within 2 km search area.CWS Site Reasons for designation Distance from

centre of site

HelliganWoods

Forms part of camel estuary and river systems and covers 141 Ha.A number of woodlands make up this site and are listed as ancient,but are primarily replanted. Dominated by coniferous plantationwith some mixed woodland and broadleaf woodland, there is avaried understorey from poor to well developed. Many treessupport epiphytic lichens and bryophyte communities. BAPhabitats – upland oakwood, upland mixed ashwoods, wetwoodland. BAP sp - Dormouse, otter, bats (LHS, BLE) and moths(buff ermine, small phoenix) present. Also kingfisher and greywagtail are noted.

0 km

3.1.5 Two records of dormouse were returned within the site boundary to the western endof the site. One of these records was associated with the detailed study of thedormouse population in this location, as discussed in Section 3.2 below. The otherwas to the west of the site towards Bodmin. No other dormouse records werereturned within the desk study area.

3.2 Overview of Dormouse Study on A30

3.2.1 This section provides a summary of the dormouse research by Chanin and Gubert(2012) completed on the A30 between 2007 and 2010 to provide an insight into theecology of this population, and to help understand any potential effects of theproposed road scheme.

3.2.2 The dormouse population at Penlan, Cornwall was studied along a 2 km length ofdual carriageway within nine linear sections of woodland, plantation and/or scrubreside north and south of the carriageway and within the central reservation. Thehabitat was severed at least 25 years ago by the construction of the A30 dualcarriageway.



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3.2.3 The woodland/plantation together comprised a combination of hazel (Corylusavellana), ash (Fraxinus excelsior), blackthorn (Prunus spinosa), birch (Betulapendula), pine (Pinus sp.), hawthorn (Crataegus monogyna) and sycamore (Acerpseudoplatanus). The scrub was dominated by gorse (Ulex europaeus) and bramble(Rubus fruticosus agg.). These fragmented habitats were found in linear sections 10to 20m wide forming up to 0.2 - 10 ha areas. Each habitat section was severed bybetween 8 m and 20 m of road.

3.2.4 The area of this study in relation to the proposed road scheme is presented in Figure2 below. In summary the western most part of the A30 widening scheme forms theeastern extent of the research study area, with direct potential effects limited to twostudy sections (labelled C1 and S1).

Figure 2 Schematic of Research Study area (2kms long, 75m wide) (from Chaninand Gubert, 2012). Solid lines are carriageways; dashed lines are side roads andarrows are connections to offsite habitat. Dot-dashed line shows proposed location ofjunction in relation to study of dormouse population.

This box shows the approximate location of Junction relativeto the study area. The junction is the only works planned in this area.

3.2.5 Two hundred dormouse boxes and tubes were erected in April 2007 across the ninesections and checked monthly from April to October in 2007 and 2008; and April toNovember in 2009 and 2010. Sixty two individuals were captured and PIT taggedwhere they fulfilled certain criteria (e.g. weight).

3.2.6 This study showed that within the more substantial sections of semi naturalwoodland/plantation habitat (Sections C2 and N2) the dormice were found throughoutthe survey season, with breeding recorded within the central reservation.

3.2.7 Within the area of the proposed scheme junction, one male in particular was recordedmoving between C1 and N1 approximately 30m away one day, and was back in C1the next day. There was no record of breeding. It was considered that individuals aredispersing when found in this area, up to two males and four females were recordedwithin C1, in April, May and July only.

3.2.8 It can be deduced from the information gathered to date that the sections affected bythe proposed road widening (N1, C1 and S1) are predominantly used for dispersal(pers.comm. Dr Paul Chanin), it is further west where breeding was recorded. andwas.



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3.3 Field Survey

3.3.1 The roadside habitat (Survey Tubes Group A) provided suitable habitat for dormice inthe form of hedgerows and scrub, which were fragmented from the wider landscape’snetwork of hedgerows. The hedgerow on the west bound side of the carriagewaycontained of a number of tall trees and an area of introduced garden shrubs set withina bank 2 m high. The trees included hazel, oak (Quercus sp.), blackthorn, hawthorn,holly (Ilex sp.) and sycamore. A large section of the hedge was managed (flailed)hazel. The hedgerow surveyed was part of a complete ring around the field; and wasfragmented from the wider hedgerow network by approximately 10m as it wasbounded by the dual carriageway and an access road off the A30. The east boundcarriageway verge consisted mainly of scrub including gorse and bramble with a fewscattered trees, and this was also surveyed.

3.3.2 Survey Tubes Group B were erected within a mosaic of habitat types including semi-natural broadleaved woodland, a field classified as marshy grassland with scatteredtrees. and considerable areas of scrub dominated by bramble. The woodland wasdominated by goat willow (Salix caprea) with sessile oak (Quercus petraea), hazel,and hawthorn with wet ditches running through it; it ran parallel to the road acting as aboundary between the road and the field. This woodland habitat was connected to asmall area of woodland further south. The recorded and known population of dormicewere approximately 1.3 km from this location and there is connective habitat betweenthe two areas.

3.3.3 No dormouse signs were found during the field survey. Evidence of wood mice(Apodemus sylvaticus) were found within ten of the tubes, eight of these beingalongside the road in gorse and two within the hedgerow, both within survey tubesGroup A.

3.3.4 A full account of the survey results can be found in Appendix 1.



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SECTION 4

DISCUSSION AND RECOMMENDATIONS



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4 DISCUSSION AND RECOMMENDATIONS

4.1 Discussion

4.1.1 No dormice were found during the survey of the road verges (Group A and B) withinthe midway point of the proposed road scheme. There is a known population ofdormice at the western most point of the scheme located within the Helligan WoodsCounty Wildlife Site (CWS), north and south side of the A30, and within the centralreservation, approximately 1.3km from the survey area.

4.1.2 The fragmented habitat within the soft estate at the western end of the scheme,known to support dormice, is well connected to a network of sizeable woodland andplantation areas. These are located north and south of the A30 including the HelliganWoods CWS network and the Callabarett woodland network. These woodlandnetworks are likely to support good source populations of dormice. Connective habitatof hedgerows, copses and willow/carr exist between the aforementioned networksand the survey area and it is possible that dormice will have dispersed. Given thepatchily distributed low population of dormice across Cornwall, with absence one yearand presence the next (pers. comm. County Ecologist) and given dormice may bedifficult to adequately survey (Chanin, 2003) there is a requirement for interpretationand professional judgement when assessing one negative result without successiveyears monitoring. Although the survey protocol satisfies Natural England’s Guidelinesto qualify absence, given the suitability of habitat and the proximity of the knownpopulation with connective habitat a presence is assumed.

4.1.3 In the absence of mitigation there is the possibility of causing incidental harm todormice whilst habitat clearance works take place. Small areas were lawfully,temporarily cleared for ground investigation for the junction work under a MethodStatement agreed with Natural England and the County Ecologist. The methodstatement defined a two-stage clearance commencing in March 2012, and wassupervised by Dr. Paul Chanin and PB Ecologists on the ground. The additional,permanent loss of habitat within this known dormouse population area is likely torequire a Natural England EPS Mitigation Licence in order to proceed lawfully.

4.1.4 It is not possible to determine road traffic mortalities of common dormice as theycross the A30, as this has not been studied. However it would be reasonable toassume that road traffic casualties may increase due to the volume and speed oftraffic increasing with the dualling of the road between Temple and Carblake.

4.2 Recommendations

4.2.1 Once the development design has been completed and the layout of the junctionsconfirmed, the need for a licence will be fully assessed. For a licence it will benecessary to demonstrate that the development is required for public interest and thatthere are no other satisfactory alternatives to the development that will have lessimpact on the dormouse population. In addition it will be necessary to demonstratethat the development will maintain the favourable conservation status (FCS) of thepopulation. This means that the natural range of dormice is stable or increasing, andthat the species structure and functions that are necessary for its long termmaintenance exist and are likely to continue to exist for the foreseeable future,notwithstanding the development.

4.2.2 A detailed mitigation strategy will be finalised at the detailed design stage based uponthe broad strategy outlined below. If the general principles below are followed, it isconsidered that the FCS of the local dormouse population will be maintained.



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4.2.3 Avoidance of injury and killing dormice

4.2.4 Vegetation clearance may result in the harm of dormice. Therefore a detailedstrategy will be developed in accordance with the Dormouse Conservation Handbookand Natural England Standing Advice. It is likely that this will be implemented throughan EPS Mitigation Licence.

4.2.5 For both areas habitat will be retained where possible, for the small areas of habitatthat are to be removed, vegetation clearance will be phased. Initially the vegetationwill be cut back to a height of 30 cm during the hibernation period and then in theactive period the stumps and roots would be removed. Alternatively, gradualclearance in the active period may be suitable. This aspect of the strategy will befinalised at the detailed design stage. This would also take into account mitigation fornesting birds.

On-site mitigation and enhancement

4.2.6 The mitigation strategy will ensure no net loss of dormouse habitat, with a view toachieving habitat enhancement both in terms of the quality and quantity of habitatavailable. As a minimum a like-for-like compensation will be required, however a netgain will be aimed for where possible. New habitat will be designed specifically toprovide optimum habitat for dormice, this means that it will be rich with native speciesof local provenance that provide food sources for dormice throughout the activeperiod. Where possible it will replicate the surrounding habitat to provide continuitywith the landscape.

4.2.7 Ecologists have already worked with the scheme engineers to secure the footprint ofthe junction is situated outside of the larger area of dormouse habitat within HelliganWoods CWS, so the majority of the development will fall within agricultural fields(improved grassland). It is recommended that additional planting be implementedclose to the road to secure FCS sustaining the long-term viability of this population.This should be linked to existing plans in place as part of the Highways Agency BAPand Landscape Environmental Management Plans (LEMPs).

4.2.8 The detailed studies of the dormouse population at this location form a baseline forcontinued monitoring of the site. Monitoring the local population annually for at leastthree years is considered necessary and would be a condition of any EPS licencerequired. PIT tagging would record dormouse behaviour in response to the roadjunction and widening, and increased traffic volumes, and determine any effect on thewell studied dormouse population’s behaviour.



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SECTION 5

CONCLUSIONS



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5 CONCLUSIONS

5.1.1 The A30 is proposed to be widened between Temple and Carblake in Cornwall whereit is currently a single carriageway. The Extended Phase 1 habitat survey completedas part of the Ecological Assessment identified the need for a common dormouselikely presence /absence survey to be carried out.

5.1.2 Dormice are known to be present at the western end of the scheme due to a longterm dormouse study. It is impractical to survey a whole widening scheme thereforeone area of suitable habitat for dormice at Preeze Cross which was connected to thislong term dormouse study by hedgerows and connected to woodland was identifiedfor survey. It was surveyed for dormice in accordance with standard best practiceguidelines. Dormice were not found within the survey area. However due to thehabitat connectivity to the known population, dormice may live in patchily distributedlow populations, which are difficult to survey for without successive years monitoringtherefore a presence is assumed.

5.1.3 The scheme is likely to result in small scale habitat losses particularly in associationwith landtake for the junction areas Cardinaham Downs and Preeze Cross. As suchthere is a possibility of causing incidental harm to dormice whilst habitat clearanceworks take place. There is also a possibility that road traffic casualties will increasedue to the volume and speed of traffic increasing at this location.

5.1.4 Through research it is known that dormice traverse the open ground of the A30 toreach the central reservation. The area to be affected by the proposed junction hasbeen studied between 2007 and 2010 and it is known dormice are present for part ofthe year during dispersal and/or to access food sources. The area affected is outsideof the stronghold of the dormouse population further west where dormice have beenrecorded throughout the active season and are found to breed within the centralreservation.

5.1.5 The permanent loss of dormouse habitat within the scheme, is likely to require aNatural England EPS Mitigation Licence. A detailed mitigation strategy will befinalised at the detailed design stage based broadly upon the strategy outlined in thisreport. Habitat lost will be restored like for like with enhancements to the speciescomposition resulting in a net gain to help maintain Favourable Conservation Status(FCS) of the population.

5.1.6 Monitoring the local population annually for at least three years is also considerednecessary. PIT tagging would record dormouse behaviour in response to the roadjunction and widening, and increased traffic volumes, and determine any effect on thewell studied dormouse population’s behaviour.



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SECTION 6

FIGURES



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Figure 1

(

(

(

(

(

(

(((

((

((

((

1

1

3025

2226

4550

462120

3126

50

25

© This drawing is Copyright. It should not be relied on or usedin circumstances other than those for which it was originallyprepared and for which Cornwall Council was originallycommissioned, Cornwall Council accepts no responsibility forthis drawing to any party other than the person(s) by whom itwas commissioned.

NOTES

FIRST ISSUE-

REV DATE NATURE OF REVISION

REVISIONS

LOCATIONA30 TEMPLE TO HIGHER CARBLAKECORNWALL

PROJECTA30 TEMPLE TO HIGHER CARBLAKEIMPROVEMENT

DRAWING TITLEDORMOUSE TUBE LOCATIONSAND KNOWN POPULATIONS

PROJECT MANAGER:

DRAWN BY:SCALE:

DRAWING NO_285300FW_HLV_10

REVISIONSCALE @ A3

CHECKED: APPROVED:

© Crown copyright and database right 2013 Ordnance Survey 100049047.A

RADNOR ROADSCORRIER

CORNWALL TR16 5EHwww.cornwall.gov.uk/cormac 01872 323313

CORMAC SOLUTIONS

1:2,500

o

CD JL GS

US

0 100 20050Metres

Helligan Woods

Proposed WorksSurvey AreaDesk Study ResultKnown Populations

( Tube LocationHelligan Woods CWS

24/04/13

KNOWN DORMOUSE POPULATION IN RELATION TO SURVEY AREA

A

B



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SECTION 7

APPENDICES



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6 APPENDIX 1

6.1 Dormouse Survey Results.

E – empty; M – missing/could not find; F/R – fallen and repositioned; I – inaccessible;B – broken; WN – woodmouse nest; WF – woodmouse food cache

Location Tube number 16th July 8th August19thSeptember 30th October 14th November

A 1 E E E E E

A 2 E E E E E

A 3 E E E E E

A 4 E E E E E

A 5 E E E E E

A 6 E E E E E

A 7 F/R E E WF WF

A 8 E E WN WN WN

A 9 E E E E E

A 10 E E E WN WN

A 11 E E E E E

A 12 F/R E E E E

A 13 E E E E E

A 14 E E E E E

A 15 E E E F/R E

A 16 E E WN WN WN

A 17 E E E E E

A 18 E E E E E

A 19 E E E E E

A 20 E E E WF WF

A 21 E E E WF WF

A 22 E E E E E

A 23 E E E E E

A 24 E E E E E

A 25 E E E E WF

A 26 E E E F/R E

A 27 E E E E E

A 28 E E E E E

A 29 E E E WN WN

A 30 E E E E E

A 31 E E E E E



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A 32 E E E E E

A 33 E E E E E

A 34 E E E E E

A 35 E E E E E

A 36 M E E E E

A 37 E E E E E

A 38 E E E E E

A 39 E E E E E

A 40 E E E F/R E

A 41 E E E E E

A 42 E E E E E

A 43 E E E E E

A 44 E E E E E

A 45 E E E E E

A 46 E E E E E

A 47 E E E E E

A 48 E E E E E

A 49 E E E E E

A 50 E E E E E

B 1 E E E E E

B 2 E E E E E

B 3 M M M M M

B 4 E E E E E

B 5 E E E E E

B 6 E E E F/R E

B 7 E E E E E

B 8 E E E E E

B 9 E E E E E

B 10 E E E E E

B 11 E E E E E

B 12 E E E E E

B 13 E E E E E

B 14 E E E E E

B 15 E E E E E

B 16 E E E E E

B 17 E E E E E

B 18 E E E E E

B 19 E E E E E



- 41 -

B 20 E E E E E

B 21 E E E E E

B 22 E I E E E

B 23 E I E E E

B 24 E I E E E

B 25 I I E E E

B 26 I I I E E

B 27 I I I E E

B 28 I I I E E

B 29 I I E E E

B 30 I I E E E

B 31 E M E E E

B 32 E E E E E

B 33 M E E E E

B 34 E E E E E

B 35 M M M M M

B 36 E E B E E

B 37 E E E E E

B 38 E E E E E

B 39 E E E E E

B 40 F/R E M M E

B 41 E E E E E

B 42 E E E E WF

B 43 E E E E WF

B 44 E E E E E

B 45 E E E E E

B 46 E E E E E

B 47 E E E E E

B 48 F/R E E E E

B 49 E E E E E

B 50 E E E E E

(

(

(

(

( (

( ((

((

(

((

(

1

1

30

25 22

26

4550

462120

31

26

50

25

© This drawing is Copyright. It should not be relied on or used in circumstances other than those for which it was originally prepared and for which Cornwall Council was originally commissioned. Cornwall Council accepts no responsibility for this drawing to any party other than the person(s) by whom it was commissioned.

NOTES

REVISIONS

NATURE OF REVISIONDATEREV

FIRST ISSUE-

LOCATION

A30 - CORNWALLPROJECT

A30 TEMPLE TO HIGHER CARBLAKEIMPROVEMENTPINS REF: TR010014

DRAWING TITLE

ENVIRONMENTAL STATEMENTFIGURE 09.04.01

REGULATION: 5(2)(a)PROJECT MANAGER:DRAWN BY: CHECKED: APPROVED:SCALE

SCALE @ A1DRAWING NO REVISION

TRXCP311_PA_6.03_FIG_09.04.01 -

1:1000

A HALLAMCD JL AH

Development Consent Order (DCO) boundary

Proposed scheme

Survey Area

( Tube Location

Desk Study Result

Known Populations

Helligan Woods CWS

0 10050

metres

N#

07.08.13

KEY:

© Crown copyright and database right 2013 Ordnance Survey 100049047.

Helligan Woods

Contains Ordnance Survey data © Crown copyright and database right 2013

N#

LOCATION PLAN - NOT TO SCALE

Appendix 9.04 – Dormouse Survey Report...A30 Temple to Carblake Dormouse Report A30 Dormouse FINAL...

Documents

Transcript of Appendix 9.04 – Dormouse Survey Report...A30 Temple to Carblake Dormouse Report A30 Dormouse FINAL...