Grenfell Stage 2 Investigation into Project number: 60632092 Potential Land Contamination Impacts Prepared for: Royal Borough of Kensington and Chelsea AECOM Appendix A – Figures A1 - Grenfell Tower Site Location Map A2 - Grenfell Tower Sampling Areas for Stages 1 and 2 A3 - Sampling Areas for Stages 1 and 2 with Historical Potentially Contaminative Land Uses A4 - Average Antimony Concentrations A5 - Average Dioxin-like PCB Concentrations A6a - Average Chlorinated Dioxins and Furans Concentrations – Shallow samples on Grass/Turf and Bare Soil A6b - Average Chlorinated Dioxins and Furans Concentrations – Shallow samples on Bare Soil only A7a - Individual Chlorinated Dioxins and Furans Concentrations – Shallow samples on Grass/Turf and Bare Soil A7b - Individual Chlorinated Dioxins and Furans Concentrations – Shallow samples on Bare Soil only A8a - Lead Concentrations with GSC and Background Data – Shallow samples up to 5km A8b - Lead Concentrations with GSC and Background Data – Shallow samples up to 500m A8c - Chlorinated Dioxins and Furans Concentrations – Shallow samples up to 5km A8d - Chlorinated Dioxins and Furans Concentrations – Shallow samples up to 500m A8e - BaP Concentrations with GSC and Background Data – Shallow samples up to 5km A8f - BaP Concentrations with GSC and Background Data – Shallow samples up to 500m A8g - Dioxin-like PCB Concentrations with GSC and Background Data – Shallow samples up to 5km A8h - Dioxin-like PCB Concentrations with GSC and Background Data – Shallow samples up to 500m A8i - Antimony Concentrations with GSC and Background Data – Shallow samples up to 5km A8j - Antimony Concentrations with GSC and Background Data – Shallow samples up to 500m A9a - Box and whisker plots of chlorinated dioxins and furans summary statistics A9b - Box and whisker plots of lead summary statistics A9c - Box and whisker plots of benzo(a)pyrene summary statistics A9d - Box and whisker plots of antimony summary statistics A9e - Box and whisker plots of dioxin-like PCB summary statistics
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Grenfell Stage 2 Investigation into Project number: 60632092Potential Land Contamination Impacts
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Appendix A – FiguresA1 - Grenfell Tower Site Location Map
A2 - Grenfell Tower Sampling Areas for Stages 1 and 2
A3 - Sampling Areas for Stages 1 and 2 with Historical Potentially Contaminative Land Uses
A4 - Average Antimony Concentrations
A5 - Average Dioxin-like PCB Concentrations
A6a - Average Chlorinated Dioxins and Furans Concentrations – Shallow samples on Grass/Turfand Bare Soil
A6b - Average Chlorinated Dioxins and Furans Concentrations – Shallow samples on Bare Soilonly
A7a - Individual Chlorinated Dioxins and Furans Concentrations – Shallow samples on Grass/Turfand Bare Soil
A7b - Individual Chlorinated Dioxins and Furans Concentrations – Shallow samples on Bare Soilonly
A8a - Lead Concentrations with GSC and Background Data – Shallow samples up to 5km
A8b - Lead Concentrations with GSC and Background Data – Shallow samples up to 500m
A8c - Chlorinated Dioxins and Furans Concentrations – Shallow samples up to 5km
A8d - Chlorinated Dioxins and Furans Concentrations – Shallow samples up to 500m
A8e - BaP Concentrations with GSC and Background Data – Shallow samples up to 5km
A8f - BaP Concentrations with GSC and Background Data – Shallow samples up to 500m
A8g - Dioxin-like PCB Concentrations with GSC and Background Data – Shallow samples up to5km
A8h - Dioxin-like PCB Concentrations with GSC and Background Data – Shallow samples up to500m
A8i - Antimony Concentrations with GSC and Background Data – Shallow samples up to 5km
A8j - Antimony Concentrations with GSC and Background Data – Shallow samples up to 500m
A9a - Box and whisker plots of chlorinated dioxins and furans summary statistics
A9b - Box and whisker plots of lead summary statistics
A9c - Box and whisker plots of benzo(a)pyrene summary statistics
A9d - Box and whisker plots of antimony summary statistics
A9e - Box and whisker plots of dioxin-like PCB summary statistics
Solid investigation area indicative boundarydelimits a 500m radius from Grenfell Tower
Dashed investigation area indicativeboundary shows area encompassing core ofmodelled plume and specific sites identifiedfor sampling in the Stage 2 detailed design
Historic Tanks") Electrical Sub Station Facilities") Potential Tanks") Tanks
Potentially Infilled Land (Non-Water)Unknown Filled Ground (Pit, quarry etc)
Potentially Contaminative IndustrialUses (Past Land Use) - Point Features!( Coal storage and depot!( Metal casting/foundries
RailwaysSewageClay bricks & tiles [manufacture]Factory or works - use not specifiedHospitalsRailwaysRoad haulageRBKC identified potentially contaminatedlandLBHF identified potential contaminatedsitesRBKC identified areas ofGeoenvironmental interestRBKC registered trade directory entriesRBKC Sites of Geoenvironmental Interestbased on Historic Maps
SAMPLING AREAS FOR STAGES 1 AND 2 WITH
HISTORICAL POTENTIALLY CONTAMINATIVE LAND USES
ROYAL BOROUGH OF KENSINGTON & CHELSEA
THIS DRAWING IS TO BE USED ONLY FOR THE PURPOSE OFISSUE THAT IT WAS ISSUED FOR AND IS SUBJECT TO AMENDMENT
Grenfell Investigation into Potential Land Contamination Impacts Figure A8a - Lead concentrations comparison with GSC and backgrounddata - shallow samples, up to 5km radius from Grenfell Tower
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
0-0.05m depth excluding raised beds 0-0.02m depth excluding raised bedsLondon Earth datapoints GSC for Resi+HPLondon Earth Background Minimum London Earth Background MaximumLondon Earth Background Mean Normal Background Concentration
London Earthbackground range
Grenfell Investigation into Potential Land Contamination Impacts Figure A8b - Lead concentrations comparison with GSC and backgrounddata - shallow samples, up to 500m radius from Grenfell Tower
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
0
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0 50 100 150 200 250 300 350 400 450 500
Lead
(mg/
kg)
Distance from Grenfell Tower (m)
0-0.05m depth excluding raised beds 0-0.02m depth excluding raised bedsLondon Earth datapoints GSC for Resi+HPLondon Earth Background Minimum London Earth Background MaximumLondon Earth Background Mean Normal Background Concentration
London Earthbackground range
Grenfell Investigation into Potential Land Contamination Impacts Figure A8c - Chlorinated dioxins and furans concentrations comparison withbackground data - shallow samples, up to 5km radius
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
0-0.05m depth excluding raised beds 0-0.02m depth excluding raised beds EA Background MinimumEA Background Maximum EA Background Mean
EA backgroundrange
Grenfell Investigation into Potential Land Contamination Impacts Figure A8d - Chlorinated dioxins and furans concentrations comparison withbackground data - shallow samples, up to 500m radius
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A8e - Benzo(a)pyrene concentrations comparison with GSC and backgrounddata - shallow samples, up to 5km radius from Grenfell Tower
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
EA Background Minimum EA Background Maximum EA Background Mean
Normal Background Concentration
EA backgroundrange
Grenfell Investigation into Potential Land Contamination Impacts Figure A8f - Benzo(a)pyrene concentrations comparison with GSC and backgrounddata - shallow samples, up to 500m radius from Grenfell Tower
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
EA Background Minimum EA Background Maximum EA Background Mean
Normal Background Concentration
EA backgroundrange
Grenfell Investigation into Potential Land Contamination Impacts Figure A8g - Sum of 12 dioxin-like PCBs concentrations comparison with backgrounddata - shallow samples, up to 5km radius
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
0-0.05m excluding raised beds 0-0.02m excluding raised beds EA Background Minimum EA Background Maximum EA Background Mean
EA backgroundrange
Grenfell Investigation into Potential Land Contamination Impacts Figure A8h - Sum of 12 dioxin-like PCBs concentrations comparison with backgrounddata - shallow samples, up to 500m radius
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
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0 50 100 150 200 250 300 350 400 450 500
Sum
of 1
2 Di
oxin
-like
PCB
s (µg
/kg)
Distance from Grenfell Tower (m)
0-0.05m excluding raised beds 0-0.02m excluding raised beds EA Background Minimum EA Background Maximum EA Background Mean
EA backgroundrange
Grenfell Investigation into Potential Land Contamination Impacts Figure A8i - Antimony concentrations - shallowsamples, up to 5km radius from Grenfell Tower
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A8j - Antimony concentrations - shallowsamples, up to 500m radius from Grenfell Tower
Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A9a - Box and whisker plots of chlorinated dioxins and furans summary statistics Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A9b - Box and whisker plots of lead summary statistics Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A9c - Box and whisker plots of BaP summary statistics Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A9d - Box and whisker plots of antimony summary statistics Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM
Grenfell Investigation into Potential Land Contamination Impacts Figure A9e - Box and whisker plots of dioxin-like PCB summary statistics Project number: 60632092
Prepared for: Royal Borough of Kensington and Chelsea AECOM