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efers to standards recommended by the Expert Panel on Air Quality Standards. Recommended standards are set purely with regard to scientific and medical evidence on the effects of the particular pollutants on health, at levels at which risks to public health, including vulnerable groups, are very small or regarded as negligible. 2 Refers to objectives in the Strategy for each of the eight pollutants. The objectives provide policy targets by outlining what should be achieved in the light of the air quality standards and other relevant factors and are expressed as a given ambient concentration to be achieved within a given timescale.

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6 1 INTRODUCTION TO THE UPDATING AND SCREENING ASSESSMENT PURPOSE OF THE UPDATING AND SCREENING ASSESSMENT OVERVIEW OF APPROACH TAKEN RELEVANT DEFRA DOCUMENTATION USED POLLUTANTS CONSIDERED IN THIS REPORT STRUCTURE OF THE REPORT ! INFORMATION USED TO SUPPORT THIS ASSESSMENT CONCLUSIONS FROM THE FIRST ROUND OF REVIEW AND ASSESSMENT OF AIR QUALITY FOR THE LONDON BOROUGH OF BRENT PROPOSED DEVELOPMENTS WHICH MAY AFFECT AIR QUALITY ROAD TRAFFIC DATA... 7 " # $%&... 7 " '... 7 "" % () * PART A AND B PROCESSES AMBIENT MONITORING... 7 % , ++( ' UPDATING AND SCREENING ASSESSMENT FOR CARBON MONOXIDE THE NATIONAL PERSPECTIVE STANDARD AND OBJECTIVE FOR CARBON MONOXIDE CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR CARBON MONOXIDE SCREENING ASSESSMENT OF CARBON MONOXIDE BACKGROUND CONCENTRATIONS FOR CARBON MONOXIDE SCREENING ASSESSMENT OF MONITORING DATA SCREENING ASSESSMENT OF VERY BUSY ROADS CONCLUSIONS FOR CARBON MONOXIDE CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT UPDATING AND SCREENING ASSESSMENT FOR BENZENE THE NATIONAL PERSPECTIVE STANDARD AND OBJECTIVE FOR BENZENE CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR BENZENE SCREENING ASSESSMENT OF BENZENE BACKGROUND CONCENTRATIONS FOR BENZENE SCREENING ASSESSMENT OF MONITORING DATA SCREENING ASSESSMENT OF VERY BUSY ROADS SCREENING ASSESSMENT OF INDUSTRIAL SOURCES SCREENING ASSESSMENT OF PETROL STATIONS SCREENING ASSESSMENT OF FUEL STORAGE DEPOTS CONCLUSIONS FOR BENZENE CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT UPDATING AND SCREENING ASSESSMENT FOR 1,3-BUTADIENE THE NATIONAL PERSPECTIVE STANDARD AND OBJECTIVE FOR 1,3-BUTADIENE CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR 1,3-BUTADIENE SCREENING ASSESSMENT OF 1,3-BUTADIENE BACKGROUND CONCENTRATIONS FOR 1,3-BUTADIENE SCREENING ASSESSMENT OF MONITORING DATA SCREENING ASSESSMENT OF INDUSTRIAL SOURCES CONCLUSIONS FOR 1,3-BUTADIENE CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT

7 6 UPDATING AND SCREENING ASSESSMENT FOR LEAD THE NATIONAL PERSPECTIVE STANDARD AND OBJECTIVE FOR LEAD CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR LEAD SCREENING ASSESSMENT OF LEAD SCREENING ASSESSMENT OF MONITORING DATA SCREENING ASSESSMENT OF INDUSTRIAL SOURCES CONCLUSIONS FOR LEAD CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT UPDATING AND SCREENING ASSESSMENT FOR NITROGEN DIOXIDE INTRODUCTION STANDARDS AND OBJECTIVES FOR NITROGEN DIOXIDE CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR NITROGEN DIOXIDE SCREENING ASSESSMENT OF NITROGEN DIOXIDE BACKGROUND CONCENTRATIONS FOR NITROGEN DIOXIDE SCREENING ASSESSMENT OF MONITORING DATA , ++/ ' % + +( ' SCREENING ASSESSMENT OF ROAD TRAFFIC SOURCES , " SCREENING ASSESSMENT OF INDUSTRIAL SOURCES SCREENING ASSESSMENT OF OTHER TRANSPORT SOURCES '$%& ( ' 0' " * CONCLUSIONS FOR NITROGEN DIOXIDE CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT UPDATING AND SCREENING ASSESSMENT FOR SULPHUR DIOXIDE INTRODUCTION STANDARD AND OBJECTIVE FOR SULPHUR DIOXIDE CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR SULPHUR DIOXIDE SCREENING ASSESSMENT OF SULPHUR DIOXIDE BACKGROUND CONCENTRATIONS FOR SULPHUR DIOXIDE SCREENING ASSESSMENT OF MONITORING DATA SCREENING ASSESSMENT OF INDUSTRIAL SOURCES ( SCREENING ASSESSMENT OF DOMESTIC SOURCES %( + ' SCREENING ASSESSMENT OF OTHER TRANSPORT SOURCES CONCLUSIONS FOR SULPHUR DIOXIDE CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT UPDATING AND SCREENING ASSESSMENT FOR PM THE NATIONAL PERSPECTIVE STANDARD AND OBJECTIVE FOR PM CONCLUSIONS OF THE FIRST ROUND OF REVIEW AND ASSESSMENT FOR PM SCREENING ASSESSMENT OF PM BACKGROUND CONCENTRATIONS FOR PM SCREENING ASSESSMENT OF MONITORING DATA SCREENING ASSESSMENT OF ROAD TRAFFIC SOURCES

8 5-" 3 (7 ' 0' '$%& SCREENING ASSESSMENT OF INDUSTRIAL SOURCES * SCREENING ASSESSMENT OF FUGITIVE AND UNCONTROLLED SOURCES %( + ' "!+' SCREENING ASSESSMENT OF OTHER TRANSPORT SOURCES * CONCLUSIONS FOR PM 10 CONCENTRATIONS IN THE LONDON BOROUGH OF BRENT CONCLUSIONS CARBON MONOXIDE BENZENE ,3-BUTADIENE LEAD NITROGEN DIOXIDE SULPHUR DIOXIDE PM SUMMARY AND RECOMMENDATIONS REFERENCES...43 ))"*" #+ : "" #, &" "" #- "# #. # #" # #/ '7# 5

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23 BR51 Benzene diffusion tubes Water Railway Roads BR53 BR31 BR58 BR59 BR41 BR42 BR55 BR56 BR57 N W E S 2 *B" E

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33 &"#0* " " 6:"$ B #/ "" " *##" µ B/ * Site Number Site Type Location Annual Average Annual Average corrected for bias Prediction for 2005 Prediction for R Junction of Kenton Rd/Upton Gardens R Sudbury Hill Close, off Harrow Road R School, junction of Watford Road and Perrin Road I Shaftesbury Avenue, adjacent to Woodcote Park R School, junction of East Lane and Oldborough Road I Wembley Hospital, Chaplin Road R Junction of Ealing Road and Bridgewater Road I School, Claremont Road R Junction of East Lane and Wembley Hill Road R Coronation Road I Kingsbury hospital, Rose Bates Drive R Junction of Fryent Way and Kingsbury Road R Fulton Road R Abbeyvale Road I Ash Tree Dell R Slough Lane R Old Church Lane I School, Cambridge Close R School, Brentfield Road I Stonebridge School, Wesley Road I Central Middlesex Hospital, Acton Lane R Junction of Kingsbury Road and Edgeware Road R Junction of North Circular and Chartley Avenue R Junction of Church Road and High Road I Junction of Dollis Hill Lane and Gladston Park Gardens R Junction of Dudden Hill Lane and High Road R Willesden General Hospital, Robson Avenue R Greyhound Road R Junction of Dollis Hill Lane and Cricklewood R School, Chichele Road I 42, Aylestone Avenue R School, junction of Willesden Avenue and Mapesbury Road B Barnhill open space, near pond B Gladston Park R Northwick Park 0 metres* I Northwick Park 25 metres* I Northwick Park 60 metres* I Northwick Park 120 metres* R Holmstall Avenue 120 metres* R Holmstall Avenue 30 metres* R Holmstall Avenue 10 metres* R Holmstall Avenue 2 metres* R Neasdon Recreation Ground 2 metres* R Neasdon Recreation Ground 10 metres* I Neasdon Recreation Ground 25 metres* B Neasdon Recreation Ground 120 metres* R IKEA, North Circular Road R IKEA, North Circular Road I School, Princes Avenue I School, Princes Avenue

34 O& " /1 "#" "#" "*&6#" "#/""#(6 7<"7)=#"#5 " (" " "# " # ""#$ ""* & ""µ / 9 56 #- "#6 #" A &9 "# " 6 6"" &9 2$C"$" 3 $" &9 (' #"6 '"#$5 &9 = #" = " " "#(" " " 3"<"7 & ""µ / 9 56 #- "#6 #" A &9 "# " 6 6"" &9 (' #"6 '"#$5 D0D ""*2"3"&&*&" &" #6" ""6# $ > -?* "# " #6 ""6"7(" """" ""#" "" " ""# $ 5$> -?*&" 6 6" &"" " *6*"*7"8"6*I +* &"#0*6 - " "##" :" *&5"# # "" - ""#µ B/ # * &"#0*6 - " "##" :" *&5"# # "" - ""#µ B/ # *

35 &"#0*< - " "##" :" >µ B/?* Road name AADTF 2005 %HDV NO Church Road / Roundwood Road Chamberlayne Road B Ealing Road Hillside / Church Road Hillside / Craven Road Park Parade / Wrottesley Road Brondesbury Road / The Avenue The Avenue East Lane / Wembley Park Road Wembley Hill / Wembley Park Road* Grange Road / Staverton Road Iverson Road Forty Lane / The Paddocks Preston Road/Preston Avenue Slough Lane Slough Lane/Roe Green/A Beverley Drive / Stag Lane Acton Lane Kenton Road Sudbury Court Drive A Harrow Road A Kenton Road A Sheepcote Road A Kenton Road A Watford Road A404* Forty Avenue A4088* Bridgewater Road A High Road A Ealing Road A Hanger Lane A Honeypot Lane A Harrow Road A Salmon Street A Kingsbury Road A North Circular A406* Craven Park A Edgware Road A High Road A Dudden Hil A Manor Park Road A Station Road A High Street A Old Oak Lane A Tubbs Road A Scrubbs Lane A Warm Lane A Cricklewood A Shoot Up Hill A Kilburn High Road A Neasden Lane B Drury Way/North Circular Road Brentfield Road/North Circular Road Brentfield/North Circular Road

36 O& #" " 65 * (A" "" 6" # ""6"" *C- "- ")""# "6"" " 5""$" "5 5 5" 5*#6 /76""# "" "#6 ""6""5" #"#*

37 &"#0*< - " "##" :" >µ B/?* Road name AADTF 2010 %HDV NO Church Road / Roundwood Road Chamberlayne Road B Ealing Road Hillside / Church Road Hillside / Craven Road Park Parade / Wrottesley Road Brondesbury Road / The Avenue The Avenue East Lane / Wembley Park Road Wembley Hill / Wembley Park Road* Grange Road / Staverton Road Iverson Road Forty Lane / The Paddocks Preston Road/Preston Avenue Slough Lane Slough Lane/Roe Green/A Beverley Drive / Stag Lane Acton Lane Kenton Road Sudbury Court Drive A Harrow Road A Kenton Road A Sheepcote Road A Kenton Road A Watford Road A404* Forty Avenue A4088* Bridgewater Road A High Road A Ealing Road A Hanger Lane A Honeypot Lane A Harrow Road A Salmon Street A Kingsbury Road A North Circular A406* Craven Park A Edgware Road A High Road A Dudden Hil A Manor Park Road A Station Road A High Street A Old Oak Lane A Tubbs Road A Scrubbs Lane A Warm Lane A Cricklewood A Shoot Up Hill A Kilburn High Road A Neasden Lane B Drury Way/North Circular Road Brentfield Road/North Circular Road Brentfield/North Circular Road O& #" " 65 *

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47 80-) )3 +9,99.,9+9 3% $%% ;µ 7- <0 Road name Predicted annual mean PM 10 concentration in 2004 Predicted number of exceedances of 24 hr objective in Predicted annual mean PM 10 concentration in 2010 Predicted number of exceedances of 24 hr objective in Church Road / Roundwood Road Chamberlayne Road B Ealing Road Hillside / Crouch Road Hillside / Craven Road Park Parade / Wrottesley Road Brondesbury Road / The Avenue The Avenue East Lane / Wembley Park Road Wembley Hill / Wembley Park Road* Grange Road / Staverton Road Iverson Road Forty Lane / The Paddocks Preston Road/Preston Avenue Slough Lane Slough Lane/Roe Green/A Beverley Drive / Stag Lane Acton Lane Kenton Road Sudbury Court Drive A Harrow Road A Kenton Road A Sheepcote Road A Kenton Road A Watford Road A404* Forty Avenue A4088* Bridgewater Road A High Road A Ealing Road A Hanger Lane A Honeypot Lane A Harrow Road A Salmon Street A Kingsbury Road A North Circular A406* Craven Park A Edgware Road A High Road A Dudden Hil A Manor Park Road A Station Road A High Street A Old Oak Lane A Tubbs Road A Scrubbs Lane A Warm Lane A Cricklewood A Shoot Up Hill A Kilburn High Road A Neasden Lane B DruryWay/North Circular Road Brentfield Road/North Circular Road Brentfield/North Circular Road

48 (A" "" 6" # ""6B"" *C- "- ")""# "6"" " 5""$" "5 5 5" 5*#6 /76""# "" "#6 ""6""5" #"#* O #" " 5* &:6- <: 9 5 *& 9 5 µ B/ 6 /- "#6 *&"- - µ B/ #= " 6 /1-0 = " " "$C"$(' #"" */- 6 " # " (' #"" * &<: ""#"9 5 /µ B/ *: ""#" " """#"9 56 #- *&9 5 µ B/ 6 - "#6 *: ""#" " 9 56 #- * 80D0+ %A "#"5"<: " "$" 9 "5 " " :>&"#*/"5?* 80D0,! &"6" #" 5 6" *< 6" " B 5#" "# " " "# "" " 6 * 80D0- ' H!!! 14 " 6 6#9 5 #" 5 6" ") 6 "#$" " #6" 6 =F"5 # "# " 9 " $:>&"#*/?* 80E ""*2"3"&**$&" &4 "!:*&4>/?# #6 " " "#<: A ) >""# "#%3#" %3"# "7? " #>1? <#>? ' >/? '# "">0? '" " >? 4" " >? (B"#>? 2 # E ) % ' #"B6 2"B6 '"#" 7!"$< " " ' "" #"$ '" 6 ' #"

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54 $ $%% Tube Number Site type Location 1 R Junction of Kenton Rd/Upton Gardens 2 R Sudbury Hill Close, off Harrow Road 3 R School, junction of Watford Road and Perrin Road 4 I Shaftesbury Avenue, adjacent to Woodcote Park 5 R School, junction of East Lane and Oldborough Road 6 I Wembley Hospital, Chaplin Road 7 R Junction of Ealing Road and Bridgewater Road 8 I School, Claremont Road 9 R Junction of East Lane and Wembley Hill Road 10 R Coronation Road 11 I Kingsbury hospital, Rose Bates Drive 12 R Junction of Fryent Way and Kingsbury Road 13 R Fulton Road 14 R Abbeyvale Road 15 I Ash Tree Dell 16 R Slough Lane 17 R Old Church Lane 18 I School, Cambridge Close 19 R School, Brentfield Road 20 I Stonebridge School, Wesley Road 21 I Central Middlesex Hospital, Acton Lane 22 R Junction of Kingsbury Road and Edgeware Road 23 R Junction of North Circular and Chartley Avenue 24 R Junction of Church Road and High Road 25 I Junction of Dollis Hill Lane and Gladston Park Gardens 26 R Junction of Dudden Hill Lane and High Road 27 R Willesden General Hospital, Robson Avenue 28 R Greyhound Road 29 R Junction of Dollis Hill Lane and Cricklewood 30 R School, Chichele Road 31 I 42, Aylestone Avenue 32 R School, jcn of Willesden Avenue and Mapesbury Road 33 B Barnhill open space, near pond 34 B Gladston Park 35 R Northwick Park (0 metres along transect) 36 I Northwick Park (25 metres along transect) 37 I Northwick Park (60 metres along transect) 38 I Northwick Park (120 metres along transect) 39 R Holmstall Avenue (120 metres along transect) 40 R Holmstall Avenue (30 metres along transect) 41 R Holmstall Avenue (10 metres along transect) 42 R Holmstall Avenue (2 metres along transect) 43 R Neasdon Recreation Ground (2 metres along transect) 44 R Neasdon Recreation Ground (10 metres along transect) 45 I Neasdon Recreation Ground (25 metres along transect) 46 B Neasdon Recreation Ground (120 metres along transect) 47 R IKEA, North Circular Road 48 R IKEA, North Circular Road 49 I School, Princes Avenue 50 I School, Princes Avenue 3$AB ")B" )B"7

55 &,,99,G,99-;µ 7- < Month (May April 2003) No Class May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr Mean 1 R R R I R I R I R R I R R R I R R I R I I R R R I R R R R R I R B B R I I I R R R R R R I B R R I I

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57 Very busy roads $32;9-< - Single carriageway roads with daily average traffic flows which exceed 80,000 vehicles per day. Dual carriageway (2 or 3-lane) roads with daily average traffic flows which exceed 120,000 vehicles per day. Motorways with daily average traffic flows which exceed 140,000 vehicles per day. Busy Roads Roads with more than vehicles per day. 6!! "* 5 -#"" "" # A T (" - 4 " $ 4 ( T# 2K" #T5 # ' % 4F =4F : : :( < " #" " K""6"" 2&"# 2'" F # 2=4F 2:$# #B6"$ ( #B6"$ #B "$"

58 ! "* 5 Road number x y Rd_cls All_vehicles CAR BUS LGV HGVr HGVa Moto A PN A TN A PB A TN A PN A TN A PB A PB A PN A PN M MN A PN A PN A PN A PN A TN M MN A PN A PN A PB A PB A PN A TB A PN A PB A PN A PN A PN A PN A PN A TN A PB A TN A PN A PB A TN A PN A PB A PN M MN M MN M MN M MN A PN M MN M MN A PN A PN A PN A PN A PN A PN

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60

61 ) % Operator Name Authorisation No. Site Address POWERGEN UK PLC AF8068 TAYLORS LANE LONDONNW10 9BU NORTHWICK PARK AND ST MARKS HOSPITAL NHS TRUST AG8012 NORTH WEST LONDON HOSPITALS NHS TRUST WATFORD ROAD HARROW MIDDLESEXHA1 3UJ ROSTI (WEMBLEY) LTD AL8312 GEC ESTATE OSRAM ROAD EAST LANE WEMBLEY MIDDLESEXHA9 7SZ HAMMERSMITH MEDICINES RESEARCH LTD AZ1744 WARD E2 CENTRAL MIDDLESEX HOSPITAL PARK ROYAL LONDONNW10 7NS BIOLINE LTD BI THE EDGE BUSINESS CENTRE HUMBER ROAD LONDONNW2 6EW NORTHWICK PARK INSTITUTE OF MEDICAL RESEARCH BK1821 NORTHWICK PARK HOSPITAL WATFORD ROAD HARROW MIDDLESEXHA1 3UJ BRENT OIL CONTRACTORS LTD BRE001/80081 WEMBEY STADIUM IND.ESTATEFOURTH WAYWEMBLEYMIDDLESEXHA9 0EPHA9 0EP

62 ) % ) $%% Company Address Process Stonebridge Joinery 190/206 Acton Lane, Harlesden Wood Combustion Processes <>0.4 & 3 MW RMC South Way, Exhibition Grounds, Wembley Blending, packing and loading of bulk cement P.J. Carey Plant Hire Ltd. Carey Hse, Great Central Way, Wembley Mobile concrete crusher P.J. Carey Plant Hire Ltd. Carey Hse, Great Central Way, Wembley Mobile concrete crusher P.J. Carey Plant Hire Ltd. Carey Hse, Great Central Way, Wembley Mobile concrete crusher P.J. Carey Plant Hire Ltd. Carey Hse, Great Central Way, Wembley Mobile concrete crusher L&B Haulage Hannah Close, Great Central, Neasden Mobile concrete crusher L&B Haulage Hannah Close, Great Central, Neasden Mobile concrete crusher L&B Haulage Hannah Close, Great Central, Neasden Mobile concrete crusher Foremoss Ltd Atlas Road, Wembley Mobile Screening Mc Cardle Environmental Ltd Mc Cardle House, Great Central Way, NW10 Mobile Screening DB Autos Great Central Way, Wembley Respraying of road vehicles Charles Evesham Ltd 374 Ealing Rd, Wembley Respraying of road vehicles Capitol Repair Centre Kilburn Lane, Kilburn, London Respraying of road vehicles Jack Rob Motors Ltd 73 Magnet Rd, GEC Estate, East Lane, North Respraying of road vehicles Wembley Lees BMW Abbey Works, Wickeham Rd, Wembley Waste Oil burner Motortone Ltd Arch 4, Exeter Parade, Exeter Rd, Kilburn Waste Oil burner Ferguson UK Ltd Harkwell House, Willenfield Rd, London Printing of Flexible Packaging Pollymark Technographic International Pollymark House, Abbeydale Rd, Wembley Printwork - Manufacture of Ltd Heat Transfers London Concrete Ltd Great Central Way, Wembley Blending, Packing Cement Bardon Aggregates Great Central Way, Wembley Roadstone coating Rosti Plc GEC Estate, East Lane, Wembley Coating of Plastics Chalkhill Incinerator Cofers Circle, Chalkhill, Wembley General waste incineration <1 tonne/hr Arena Auto Plc 372 Ealing Rd., Alperton Respraying of road vehicles Alan Day Ltd. 60 Neasden Lane Respraying of road vehicles Camrod Motor Body Repairs Revox House, First Way, Wembley Respraying of road vehicles Abbey Coachworks Ltd 429 Strathcona Road, Wembley Respraying of road vehicles Abbeydale Motor Co Ltd 260 Abbeydale Road, Appleton, Wembley Respraying of road vehicles Rustins Ltd. Waterloo Road, Crickleweood Coating manufacturing process

63 ) $%% NAME ADDRESS Throughput (litres) B.P - Blackbird Hill Service Station 2-12 Blackbird Hill, Wembley, London. NW9 8SD 6 million Elf - Willesden Service Station St Pauls Ave, Willesden, London. NW2 5TG Closed ESSO - Ruckledge Park Service Station High St, Harlesden, London. NW10 4TR Closed ESSO - Forty Avenue Srevice Station Forty Avenue, Wembley. HA99PE Closed ESSO - Alperton Service Station 418 Ealing Road, Alperton. HA0 1JQ 5.8 million ESSO - Dudden Hill Service Station Dudden Hill Lane, Neasdon, London. NW10 1DE 5 million Fina - Kensal Service Station 904 Harrow Road, Kensal Green, London. NW10 5JU 2.8 million Fina - Goldsmith Service Station Albion Works, Kingsbury Road, London. NW9 8UP closed Jet - Victoria Service Station Edgeware Rd, Cricklewood, London. NW2 6LD 5.9 million Safeway Service Station Safeway Stores PLC,Honeypot Lane, Queensbury, NW9 8SD 7.5 million Sainsbury's Service Station J Sainsbury's, 360 Ealing Rd, Alperton, Wembley HA0 1HD 9 million Shell - Staples Corner Service Station 721 North Circular Road, Staples Corner, London. NW2 5 million 7AB Shell - Pine Service Staion 421 Edgeware Rd, The Hyde, Collindale, London. NW9 5.8 milllion 0HS Shell - East Lane Service Station East Lane, N Wembley. HA9 7PE 5.9 million Shell - Neasdon Service Station 369 North Circular Road, Neasdon, London NW10 0HS 4.9 million Snax 24 - Service Station 91 Neasdon Lane, Neasdon, London.NW10 2UE 4.5 million Tesco Filling Station Tesco Stores Ltd, Greay Central Way, Neasdon, London. NW10 0TL Not near residential Texaco - Dudden Hill Service Station Dudden Hill Lane, Neasdon, London. NW10 1DE 6 million Texaco - Carlton Vale Service Station Carlton Vale, Kilburn, London. NW6 5HH 5.5 million Texaco - Forty Avenue Service Station Forty Avenue, Wembley. HA9 8JS 5.7 million Texaco - Wembley Service Station 162 Watford Rd, Wembley. HA0 3HF 4 million Texaco - College Park Service Station 875 Harrow Rd, London. NW10 5HD closed Texaco - Neasdon Service Station 244 North Circular Road, London. NW10 0JT closed Texaco - Sudbury Service Station 979 Harrow Rd, Sudbury. HA0 2LL closed Elf Oil Willesden Lane Service Station 290 Willesden Lane, Willesden, London NW2 5HX 6.3 million Elf Oil, Willesden Service Station St Paul's 77 St Paul's AvenueWillesde, London NW2 5TG closed Elf Oil, Kenton Road Service Station 609 Kenton Road, Kenton, HA3 9RT 5.5 million Elf Oil, Wembley Park ServiceStation Empire Way, Wembley HA9 0RJ 6.5 million Kilburn Service Station (Total) 100 Willesden Lane, London NW67TB 5.7 million SAI Services, Wembley Service Station High Road, WembleyHA9 6AQ 6 million Sectosure Limited Cricklewood BroadwayLondon NW2 3JX 4.1 million Woodchurch Service Station Church Lane, Kingsbury London NW9 8SL 5.6 million Craven Park service Station 2 Church Road, Harlesden, London NW10 9PX 2.4 million Palermo Road Filling Station Palermo Road, Harlesden, London NW10 5YS 1.8million Park Royal Service Station Abbey Road, Park RoyalLondon NW10 7RY 7 million

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67 Criteria Brief Outcomes of Previous Round summarised? Which objectives are being taken to a Detailed Assessment? Included? Carbon Monoxide A) Monitoring data (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) Very Busy Roads/Junctions (Background? Roads/ junctions? Exposure? Data? Calculations? Exceedances?) CONCLUSION (Detailed assessment? For What?) Benzene A) Monitoring data (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) Very Busy Roads/Junctions (Background? Roads/ junctions? Exposure? Data? Calculations? Exceedances?) C) Industrial Sources (Emissions data? Nomogram? Exceedances? Neighbouring authorities?) D) Petrol Stations (Throughput? Busy Road? Exposure?) E) Major fuel storage depots (petrol only) (Emissions? Exposure? Fugitive? Nomogram?) CONCLUSION (Detailed assessment? For what?) 1,3-butadiene A) Monitoring data (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) New Industrial Sources (Air Quality Assessments? Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) C) Industrial Sources with Substantially Increased Emissions (Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) CONCLUSION (Detailed assessment? For what?) Lead A) Monitoring data (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) New Industrial Sources (Air Quality Assessments? Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) C) Industrial Sources with Substantially Increased Emissions (Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) CONCLUSION (Detailed assessment? For what?) Nitrogen Dioxide A) Monitoring data outside an AQMA (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) Monitoring data inside an AQMA (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Compliance?) C) Narrow congested streets with residential properties close to the kerb (Background? Roads? Exposure? Data? Calculations? Width? Canyon Factor? Exceedances?)

68 D) Junctions (Background? Junctions? Exposure? Data? Calculations? Exceedances?) E) Busy streets where people may spend 1hour or more close to traffic (Background? Roads vpd? Exposure? Distance 5m or less? Data? Calculations? Exceedances?) F) Roads with a high flow of buses and/or HGVs (Background? Roads >2500 HDV? Exposure? Data? Calculations? Exceedances?) G) New roads constructed or proposed since the first round of R&A (Background? Roads/ junctions? Air Quality Assessments? Exposure? Data? Calculations? Exceedances?) H) Roads close to the objective during the first round of R&A (Roads/ junctions g/m3? Exposure?) I) Roads with significantly changed traffic flows (Background? Roads with 25% increase? Exposure? Data? Calculations? Exceedances?) J) Bus stations (>1,000 buses per day? Data? Calculations? Exposure? Exceedances?) K) New Industrial Sources (Air Quality Assessments? Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) L) Industrial Sources with Substantially Increased Emissions (Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) M) Aircraft (Exposure < 1000m from boundary? Passenger throughput > 5mppa?) CONCLUSION (Detailed assessment? For what?) Sulphur Dioxide A) Monitoring data outside an AQMA (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) Monitoring data inside an AQMA (New data? No of sites? Equipment/ QA/QC/ Exposure/ Worst case? Compliance?) C) New Industrial Sources (Air Quality Assessments? Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) D) Industrial Sources with Substantially Increased Emissions (Emissions data? Nomogram? Fugitive? Exceedances? Neighbouring authorities?) E) Areas of Domestic Coal Burning (>100 premises by 0.5 km2?) F) Small Boilers > 5 MW(thermal) (coal / fuel oil burning boilers? Exposure within 500m? Emissions? Nomogram?) G) Shipping (Exposure within 1km? > 5000 movements per year?) H) Railway Locomotives (stationary diesel locomotives for >15min? Exposure <15m?) CONCLUSION (Detailed assessment? For what?) PM10 A) Monitoring data outside an AQMA (New data? No of sites? Equipment/ Gravimetric/ QA/QC/ Exposure/ Worst case? Projected Exceedances?) B) Monitoring data inside an AQMA (New data? No of sites? Equipment/ Gravimetric/ QA/QC/ Exposure/ Worst case? Compliance?) C) Busy Roads and junctions (Scotland only) (Background? Roads/ junctions? Exposure? Data? Calculations? Exceedances?) D) Junctions (Not Scotland) (Background? Junctions? Exposure? Data? Calculations? Exceedances?)