Babergh and Mid District Councils

Broadland District Council MJH/CES/25703 Thorpe Lodge Planning Ref: 20201475/20201476/20201478 1 Yarmouth Rd NR7 0DU 26 August 2020

For the attention of Mr Burgess

Dear Sirs,

Flood Risk Assessment & Surface Water Drainage Strategy – Addendum A Plot 5B Gate, 5B Land to the east of Broadland Way and to the North of the A47, Postwick.

This Addendum to the Flood Risk Assessment & Surface Water Drainage Strategy (FRA & SWDS), has been prepared in response to the correspondence from Lucy Perry, from the Lead Local Flood Authority at County Council, to Mr Burgess, a Planning Officer at Broadland District Council, dated the 11 August 2020.

The correspondence was prepared in response to Broadland District Council’s consultation regarding the FRA & SWDS, Revision A, February 2020, prepared by Plandescil Ltd. to accompany the planning application (planning reference 20201475, 20201476, & 20201478) at the above site. In response to this we have included further details on the drainage scheme. For ease of reference we have included the LLFA’s comments prior to our response.

1. Clarification of the impermeable areas used in the calculations

The design simulations were produced after the Flood Risk Assessment, as such they have the most up to date impermeable area values. Please refer to Appendix A for the Micro Drainage Design Simulations for the site.

2. Half drain times should be less than 24hrs

Please refer to Appendix A & B for the Micro Drainage Design Simulations for the site.

The Source Control simulations provided in the FRA & SWDS were only used to work out initial volumes, excluding the pipe system which is oversized to provide additional volume. Due to how the programme is designed, it would be very hard to update the Source Control simulations to accurately include for the pipe network.

Due to the LLFA concerns regarding the half drain times, to demonstrate that the capacity of the drainage system is appropriate, Micro Drainage Design Source Control Simulations have been produced, demonstrating that the system has sufficient storage to contain consecutive 1 in 100 year and 1 in 10 year rainfall events, for further details refer to Appendix B.

2

3. A phasing plan or statement be provided

The FRA & SWDS covers the development of Plot 5a and 5b only. As detailed within the FRA & SWDS, previous planning applications, including one for the entire business park (Planning Reference 20081773) have been undertaken granting permission for the park, and also for the individual plots within the park. As part of the original planning application a park wide drainage scheme was proposed in which each plot would discharge to the estate pipe network, and this network would outfall into various infiltration ponds located throughout site.

None of the individual plots, including this site, rely on each other, with the remaining infrastructure built to serve all plots now completed and installed. As such, there are no dependencies for Plot 5 in regard to phases of works.

As part of the original scheme, discharge from each plot into the network was proposed to be unrestricted, however discharge from Plots 5a & b will be at a restricted rate, providing a betterment to the original drainage scheme.

The client has confirmed that the site wide drainage scheme was discussed approved by Jeremy Wright (Flood Risk Officer at Norfolk County Council Lead Local Flood Authority) and Real Consulting

Based upon the provision of the above, and the enclosed information, we trust this will enable the objection to be removed. Should you have any queries regarding this please do not hesitate to contact us.

Yours faithfully,

Chloe Spencer B.Sc (Hons) AMIEnvSc Environmental Consultant For and on behalf of Plandescil Ltd

Enclosures:

Appendix A: Micro Drainage Design Simulations for the Attenuation System – Pipe Network Appendix B: Micro Drainage Design Simulations for the Attenuation System – Consecutive Storm Events

APPENDIX A

25703/FRA&SWDS/AddA/CES August 2020 Plots 5a & 5b, Broadland Gate Plandescil Limited Page 1 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 16/07/2020 Designed by MJH File 25703 Rex 0.MDX Checked by Innovyze Network 2019.1

Time Area Diagram for Storm

Time Area Time Area Time Area (mins) (ha) (mins) (ha) (mins) (ha)

0-4 0.320 4-8 0.383 8-12 0.002

Total Area Contributing (ha) = 0.706

Total Pipe Volume (m³) = 51.288

©1982-2019 Innovyze Plandescil Limited Page 2 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 16/07/2020 Designed by MJH File 25703 Rex 0.MDX Checked by Innovyze Network 2019.1

STORM SEWER DESIGN by the Modified Rational Method

Network Design Table for Storm

PN Length Fall Slope I.Area T.E. Base k n HYD DIA Section Type Auto (m) (m) (1:X) (ha) (mins) Flow (l/s) (mm) SECT (mm) Design

S1.000 89.189 0.530 168.4 0.063 5.00 0.0 0.600 o 225 Pipe/Conduit S1.001 22.655 0.318 71.3 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit S1.002 12.795 0.076 167.7 0.056 0.00 0.0 0.600 o 225 Pipe/Conduit

S2.000 37.717 0.077 491.3 0.062 5.00 0.0 0.600 o 525 Pipe/Conduit

S3.000 48.160 0.286 168.2 0.084 5.00 0.0 0.600 o 225 Pipe/Conduit S3.001 7.021 0.194 36.2 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit

S2.001 25.855 0.052 500.0 0.076 0.00 0.0 0.600 o 600 Pipe/Conduit S2.002 23.934 0.075 320.7 0.060 0.00 0.0 0.035 o 600 Pipe/Conduit

S4.000 42.001 0.250 168.2 0.084 5.00 0.0 0.600 o 225 Pipe/Conduit S4.001 6.786 0.269 25.2 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit

S2.003 6.698 0.013 500.0 0.000 0.00 0.0 0.600 o 600 Pipe/Conduit S2.004 1.893 0.004 500.0 0.052 0.00 0.0 0.600 o 600 Pipe/Conduit

S1.003 40.523 0.081 500.0 0.000 0.00 0.0 0.600 o 600 Pipe/Conduit

S5.000 56.005 0.333 168.2 0.084 5.00 0.0 0.600 o 225 Pipe/Conduit S5.001 51.268 0.212 241.9 0.084 0.00 0.0 0.600 o 300 Pipe/Conduit

Network Results Table

PN Rain T.C. US/IL Σ I.Area Σ Base Foul Add Flow Vel Cap Flow (mm/hr) (mins) (m) (ha) Flow (l/s) (l/s) (l/s) (m/s) (l/s) (l/s)

S1.000 110.00 6.48 26.222 0.063 0.0 0.0 0.0 1.00 39.9 18.6 S1.001 110.00 6.72 25.693 0.063 0.0 0.0 0.0 1.55 61.7 18.6 S1.002 110.00 6.93 25.375 0.118 0.0 0.0 0.0 1.01 40.0 35.2

S2.000 110.00 5.63 25.439 0.000 200.0 0.0 0.0 1.00 217.3 200.0

S3.000 110.00 5.80 26.642 0.084 0.0 0.0 0.0 1.01 40.0 25.2 S3.001 110.00 5.85 26.356 0.084 0.0 0.0 0.0 2.18 86.7 25.2

S2.001 110.00 6.25 25.287 0.160 200.0 0.0 0.0 1.08 306.0 247.7 S2.002 110.00 5.89 25.236 0.000 111.0 0.0 0.0 0.45 127.3 111.0

S4.000 110.00 5.70 26.655 0.084 0.0 0.0 0.0 1.01 40.0 25.2 S4.001 110.00 5.74 26.405 0.084 0.0 0.0 0.0 2.62 104.0 25.2

S2.003 110.00 5.99 25.161 0.084 111.0 0.0 0.0 1.08 306.0 136.2 S2.004 110.00 5.03 25.148 0.000 111.0 0.0 0.0 1.08 306.0 111.0

S1.003 110.00 7.56 25.144 0.118 111.0 0.0 0.0 1.08 306.0 146.2

S5.000 110.00 5.93 26.446 0.084 0.0 0.0 0.0 1.01 40.0 25.2 S5.001 110.00 6.78 26.038 0.169 0.0 0.0 0.0 1.01 71.1 50.3

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STORM SEWER DESIGN by the Modified Rational Method

Network Design Table for Storm

PN Length Fall Slope I.Area T.E. Base k n HYD DIA Section Type Auto (m) (m) (1:X) (ha) (mins) Flow (l/s) (mm) SECT (mm) Design

S1.004 12.347 0.082 150.6 0.000 0.00 0.0 0.600 o 150 Pipe/Conduit

Network Results Table

PN Rain T.C. US/IL Σ I.Area Σ Base Foul Add Flow Vel Cap Flow (mm/hr) (mins) (m) (ha) Flow (l/s) (l/s) (l/s) (m/s) (l/s) (l/s)

S1.004 110.00 5.25 25.063 0.000 2.0 0.0 0.0 0.82 14.4 2.0

Free Flowing Outfall Details for Storm

Outfall Outfall C. Level I. Level Min D,L W Pipe Number Name (m) (m) I. Level (mm) (mm) (m)

S1.004 S 27.700 24.981 24.520 0 0

©1982-2019 Innovyze Plandescil Limited Page 4 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 16/07/2020 Designed by MJH File 25703 Rex 0.MDX Checked by Innovyze Network 2019.1

Online Controls for Storm

Hydro-Brake® Optimum Manhole: S16, DS/PN: S1.004, Volume (m³): 18.6

Unit Reference MD-SHE-0058-1800-1500-1800 Design Head (m) 1.500 Design Flow (l/s) 1.8 Flush-Flo™ Calculated Objective Minimise upstream storage Application Surface Sump Available Yes Diameter (mm) 58 Invert Level (m) 25.063 Minimum Outlet Pipe Diameter (mm) 75 Suggested Manhole Diameter (mm) 1200

Control Points Head (m) Flow (l/s) Control Points Head (m) Flow (l/s)

Design Point (Calculated) 1.500 1.8 Kick-Flo® 0.514 1.1 Flush-Flo™ 0.254 1.4 Mean Flow over Head Range - 1.4

The hydrological calculations have been based on the Head/Discharge relationship for the Hydro- Brake® Optimum as specified. Should another type of control device other than a Hydro-Brake Optimum® be utilised then these storage routing calculations will be invalidated

Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s)

0.100 1.2 1.200 1.6 3.000 2.5 7.000 3.7 0.200 1.3 1.400 1.7 3.500 2.7 7.500 3.8 0.300 1.4 1.600 1.9 4.000 2.8 8.000 3.9 0.400 1.3 1.800 2.0 4.500 3.0 8.500 4.0 0.500 1.2 2.000 2.0 5.000 3.1 9.000 4.1 0.600 1.2 2.200 2.1 5.500 3.3 9.500 4.2 0.800 1.4 2.400 2.2 6.000 3.4 1.000 1.5 2.600 2.3 6.500 3.5

©1982-2019 Innovyze Plandescil Limited Page 5 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 16/07/2020 Designed by MJH File 25703 Rex 0.MDX Checked by Innovyze Network 2019.1

Storage Structures for Storm

Porous Car Park Manhole: S3, DS/PN: S1.002

Infiltration Coefficient Base (m/hr) 0.00000 Width (m) 5.0 Membrane Percolation (mm/hr) 1000 Length (m) 20.0 Max Percolation (l/s) 27.8 Slope (1:X) 0.0 Safety Factor 2.0 Depression Storage (mm) 5 Porosity 0.30 Evaporation (mm/day) 3 Invert Level (m) 26.100 Membrane Depth (mm) 0

Porous Car Park Manhole: S8, DS/PN: S2.002

Infiltration Coefficient Base (m/hr) 0.00000 Width (m) 9.0 Membrane Percolation (mm/hr) 1000 Length (m) 23.9 Max Percolation (l/s) 59.8 Slope (1:X) 320.7 Safety Factor 2.0 Depression Storage (mm) 5 Porosity 0.30 Evaporation (mm/day) 3 Invert Level (m) 27.300 Membrane Depth (mm) 0

Cellular Storage Manhole: S12, DS/PN: S2.004

Invert Level (m) 25.148 Safety Factor 2.0 Infiltration Coefficient Base (m/hr) 0.00000 Porosity 0.95 Infiltration Coefficient Side (m/hr) 0.00000

Depth (m) Area (m²) Inf. Area (m²) Depth (m) Area (m²) Inf. Area (m²)

0.000 600.0 600.0 1.201 0.0 717.6 1.200 600.0 717.6

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2 year Return Period Summary of Critical Results by Maximum Level (Rank 1) for Storm

Simulation Criteria Areal Reduction Factor 1.000 Additional Flow - % of Total Flow 0.000 Hot Start (mins) 0 MADD Factor * 10m³/ha Storage 2.000 Hot Start Level (mm) 0 Inlet Coeffiecient 0.800 Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000 Foul Sewage per hectare (l/s) 0.000

Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0 Number of Online Controls 1 Number of Storage Structures 3 Number of Real Time Controls 0

Synthetic Rainfall Details Rainfall Model FEH FEH Rainfall Version 2013 Site Location GB 629156 308887 TG 29156 08887 Data Type Point Cv (Summer) 0.750 Cv (Winter) 0.840

Margin for Flood Risk Warning (mm) 0.0 Analysis Timestep 2.5 Second Increment (Extended) DTS Status ON DVD Status ON Inertia Status OFF

Profile(s) Summer and Winter Duration(s) (mins) 15, 30, 60, 120, 180, 240, 360, 480, 600, 720, 960, 1440 Return Period(s) (years) 2, 30, 100 Climate Change (%) 0, 0, 40

Water US/MH Return Climate First (X) First (Y) First (Z) Overflow Level PN Name Storm Period Change Surcharge Flood Overflow Act. (m)

S1.000 S1 15 Winter 2 +0% 100/15 Summer 26.302 S1.001 S2 15 Winter 2 +0% 100/15 Summer 25.755 S1.002 S3 15 Winter 2 +0% 30/15 Summer 25.487 S2.000 S4 15 Winter 2 +0% 25.529 S3.000 S5 15 Winter 2 +0% 100/15 Summer 26.737 S3.001 S6 15 Winter 2 +0% 26.427 S2.001 S7 15 Winter 2 +0% 100/15 Winter 25.481 S2.002 S8 15 Winter 2 +0% 100/15 Winter 25.464 S4.000 S9 15 Winter 2 +0% 100/15 Summer 26.750 S4.001 S10 15 Winter 2 +0% 26.471 S2.003 S11 480 Winter 2 +0% 100/120 Summer 25.363 S2.004 S12 480 Winter 2 +0% 100/120 Summer 25.363 S1.003 S13 15 Winter 2 +0% 100/15 Summer 25.406 S5.000 S14 15 Winter 2 +0% 100/15 Summer 26.541 S5.001 S15 15 Winter 2 +0% 100/15 Summer 26.166 S1.004 S16 15 Winter 2 +0% 2/15 Summer 25.432

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2 year Return Period Summary of Critical Results by Maximum Level (Rank 1) for Storm

Surcharged Flooded Pipe US/MH Depth Volume Flow / Overflow Flow Level PN Name (m) (m³) Cap. (l/s) (l/s) Status Exceeded

S1.000 S1 -0.146 0.000 0.24 9.5 OK S1.001 S2 -0.163 0.000 0.17 9.5 OK S1.002 S3 -0.113 0.000 0.49 16.8 OK S2.000 S4 -0.435 0.000 0.05 10.0 OK* S3.000 S5 -0.130 0.000 0.36 13.7 OK S3.001 S6 -0.154 0.000 0.22 13.7 OK S2.001 S7 -0.406 0.000 0.11 32.4 OK* S2.002 S8 -0.372 0.000 0.31 39.0 OK* S4.000 S9 -0.130 0.000 0.36 13.8 OK S4.001 S10 -0.159 0.000 0.19 13.8 OK S2.003 S11 -0.398 0.000 0.02 7.6 OK* S2.004 S12 -0.385 0.000 0.04 10.2 OK S1.003 S13 -0.338 0.000 0.02 5.4 OK S5.000 S14 -0.130 0.000 0.35 13.6 OK S5.001 S15 -0.173 0.000 0.38 25.3 OK S1.004 S16 0.219 0.000 0.10 1.4 SURCHARGED

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30 year Return Period Summary of Critical Results by Maximum Level (Rank 1) for Storm

Simulation Criteria Areal Reduction Factor 1.000 Additional Flow - % of Total Flow 0.000 Hot Start (mins) 0 MADD Factor * 10m³/ha Storage 2.000 Hot Start Level (mm) 0 Inlet Coeffiecient 0.800 Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000 Foul Sewage per hectare (l/s) 0.000

Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0 Number of Online Controls 1 Number of Storage Structures 3 Number of Real Time Controls 0

Synthetic Rainfall Details Rainfall Model FEH FEH Rainfall Version 2013 Site Location GB 629156 308887 TG 29156 08887 Data Type Point Cv (Summer) 0.750 Cv (Winter) 0.840

Margin for Flood Risk Warning (mm) 0.0 Analysis Timestep 2.5 Second Increment (Extended) DTS Status ON DVD Status ON Inertia Status OFF

Profile(s) Summer and Winter Duration(s) (mins) 15, 30, 60, 120, 180, 240, 360, 480, 600, 720, 960, 1440 Return Period(s) (years) 2, 30, 100 Climate Change (%) 0, 0, 40

Water US/MH Return Climate First (X) First (Y) First (Z) Overflow Level PN Name Storm Period Change Surcharge Flood Overflow Act. (m)

S1.000 S1 15 Winter 30 +0% 100/15 Summer 26.350 S1.001 S2 15 Winter 30 +0% 100/15 Summer 25.790 S1.002 S3 1440 Winter 30 +0% 30/15 Summer 25.730 S2.000 S4 1440 Winter 30 +0% 25.730 S3.000 S5 15 Winter 30 +0% 100/15 Summer 26.802 S3.001 S6 15 Winter 30 +0% 26.468 S2.001 S7 1440 Winter 30 +0% 100/15 Winter 25.730 S2.002 S8 1440 Winter 30 +0% 100/15 Winter 25.730 S4.000 S9 15 Winter 30 +0% 100/15 Summer 26.815 S4.001 S10 15 Winter 30 +0% 26.508 S2.003 S11 1440 Winter 30 +0% 100/120 Summer 25.730 S2.004 S12 1440 Winter 30 +0% 100/120 Summer 25.730 S1.003 S13 1440 Winter 30 +0% 100/15 Summer 25.744 S5.000 S14 15 Winter 30 +0% 100/15 Summer 26.605 S5.001 S15 15 Winter 30 +0% 100/15 Summer 26.269 S1.004 S16 1440 Winter 30 +0% 2/15 Summer 25.729

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30 year Return Period Summary of Critical Results by Maximum Level (Rank 1) for Storm

Surcharged Flooded Pipe US/MH Depth Volume Flow / Overflow Flow Level PN Name (m) (m³) Cap. (l/s) (l/s) Status Exceeded

S1.000 S1 -0.097 0.000 0.55 21.6 OK S1.001 S2 -0.128 0.000 0.38 21.6 OK S1.002 S3 0.130 0.000 0.19 6.5 SURCHARGED S2.000 S4 -0.234 0.000 0.01 1.2 OK* S3.000 S5 -0.066 0.000 0.81 31.1 OK S3.001 S6 -0.113 0.000 0.50 30.9 OK S2.001 S7 -0.157 0.000 0.01 4.1 OK* S2.002 S8 -0.105 0.000 0.04 5.1 OK* S4.000 S9 -0.065 0.000 0.82 31.2 OK S4.001 S10 -0.122 0.000 0.43 31.3 OK S2.003 S11 -0.031 0.000 0.02 6.5 OK* S2.004 S12 -0.017 0.000 0.11 25.4 OK S1.003 S13 0.000 0.000 0.06 15.7 OK S5.000 S14 -0.066 0.000 0.80 30.8 OK S5.001 S15 -0.069 0.000 0.93 62.3 OK S1.004 S16 0.517 0.000 0.10 1.4 SURCHARGED

©1982-2019 Innovyze Plandescil Limited Page 10 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 16/07/2020 Designed by MJH File 25703 Rex 0.MDX Checked by Innovyze Network 2019.1

100 year Return Period Summary of Critical Results by Maximum Level (Rank 1) for Storm

Simulation Criteria Areal Reduction Factor 1.000 Additional Flow - % of Total Flow 0.000 Hot Start (mins) 0 MADD Factor * 10m³/ha Storage 2.000 Hot Start Level (mm) 0 Inlet Coeffiecient 0.800 Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000 Foul Sewage per hectare (l/s) 0.000

Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0 Number of Online Controls 1 Number of Storage Structures 3 Number of Real Time Controls 0

Synthetic Rainfall Details Rainfall Model FEH FEH Rainfall Version 2013 Site Location GB 629156 308887 TG 29156 08887 Data Type Point Cv (Summer) 0.750 Cv (Winter) 0.840

Margin for Flood Risk Warning (mm) 0.0 Analysis Timestep 2.5 Second Increment (Extended) DTS Status ON DVD Status ON Inertia Status OFF

Profile(s) Summer and Winter Duration(s) (mins) 15, 30, 60, 120, 180, 240, 360, 480, 600, 720, 960, 1440 Return Period(s) (years) 2, 30, 100 Climate Change (%) 0, 0, 40

Water US/MH Return Climate First (X) First (Y) First (Z) Overflow Level PN Name Storm Period Change Surcharge Flood Overflow Act. (m)

S1.000 S1 15 Winter 100 +40% 100/15 Summer 26.567 S1.001 S2 1440 Winter 100 +40% 100/15 Summer 26.507 S1.002 S3 1440 Winter 100 +40% 30/15 Summer 26.507 S2.000 S4 1440 Winter 100 +40% 25.964 S3.000 S5 15 Winter 100 +40% 100/15 Summer 27.185 S3.001 S6 15 Winter 100 +40% 26.520 S2.001 S7 1440 Winter 100 +40% 100/15 Winter 26.387 S2.002 S8 1440 Winter 100 +40% 100/15 Winter 26.508 S4.000 S9 15 Winter 100 +40% 100/15 Summer 27.172 S4.001 S10 15 Winter 100 +40% 26.552 S2.003 S11 1440 Winter 100 +40% 100/120 Summer 26.361 S2.004 S12 1440 Winter 100 +40% 100/120 Summer 26.509 S1.003 S13 1440 Winter 100 +40% 100/15 Summer 26.509 S5.000 S14 15 Winter 100 +40% 100/15 Summer 27.248 S5.001 S15 15 Winter 100 +40% 100/15 Summer 26.605 S1.004 S16 1440 Winter 100 +40% 2/15 Summer 26.509

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100 year Return Period Summary of Critical Results by Maximum Level (Rank 1) for Storm

Surcharged Flooded Pipe US/MH Depth Volume Flow / Overflow Flow Level PN Name (m) (m³) Cap. (l/s) (l/s) Status Exceeded

S1.000 S1 0.120 0.000 0.98 38.1 SURCHARGED S1.001 S2 0.590 0.000 0.10 5.9 SURCHARGED S1.002 S3 0.907 0.000 0.37 12.7 SURCHARGED S2.000 S4 0.000 0.000 0.01 2.3 SURCHARGED* S3.000 S5 0.317 0.000 1.41 54.1 SURCHARGED S3.001 S6 -0.061 0.000 0.88 54.5 OK S2.001 S7 0.500 0.000 0.03 8.1 SURCHARGED* S2.002 S8 0.673 0.000 0.08 10.2 SURCHARGED* S4.000 S9 0.292 0.000 1.44 54.6 SURCHARGED S4.001 S10 -0.078 0.000 0.75 55.0 OK S2.003 S11 0.600 0.000 0.04 13.3 SURCHARGED* S2.004 S12 0.761 0.000 0.11 26.8 SURCHARGED S1.003 S13 0.765 0.000 0.07 19.1 SURCHARGED S5.000 S14 0.577 0.000 1.34 51.7 SURCHARGED S5.001 S15 0.267 0.000 1.52 101.9 SURCHARGED S1.004 S16 1.296 0.000 0.13 1.8 SURCHARGED

©1982-2019 Innovyze

APPENDIX B

25703/FRA&SWDS/AddA/CES August 2020 Plots 5a & 5b, Broadland Gate Plandescil Limited Page 1 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Summary of Results for Continuous Rainfall

Half Drain Time : 3525 minutes.

Storm Max Max Max Max Max Max Status Event Level Depth Infiltration Control Σ Outflow Volume (m) (m) (l/s) (l/s) (l/s) (m³)

01/01/2020 00:00 1.033 1.033 0.0 1.7 1.7 620.0 O K

Storm Duration Rain Flooded Discharge Time of Event (mins) (mm/hr) Volume Volume Vol Peak (m³) (m³)

01/01/2020 00:00 3240 2.995 0.0 275.8 02/01/2020 19:00

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Event: 01/01/2020 00:00

Cv 0.750 Climate Change % +0 Initial Soil Moisture (Cini) (mm) 0.000

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 00:01 0.146 01/01/2020 00:52 1.205 01/01/2020 01:43 1.838 01/01/2020 02:34 1.968 01/01/2020 00:02 0.146 01/01/2020 00:53 1.205 01/01/2020 01:44 1.838 01/01/2020 02:35 1.968 01/01/2020 00:03 0.146 01/01/2020 00:54 1.205 01/01/2020 01:45 1.838 01/01/2020 02:36 1.968 01/01/2020 00:04 0.146 01/01/2020 00:55 1.205 01/01/2020 01:46 1.838 01/01/2020 02:37 1.968 01/01/2020 00:05 0.146 01/01/2020 00:56 1.205 01/01/2020 01:47 1.838 01/01/2020 02:38 1.968 01/01/2020 00:06 0.146 01/01/2020 00:57 1.205 01/01/2020 01:48 1.838 01/01/2020 02:39 1.974 01/01/2020 00:07 0.146 01/01/2020 00:58 1.296 01/01/2020 01:49 1.838 01/01/2020 02:40 1.977 01/01/2020 00:08 0.146 01/01/2020 00:59 1.432 01/01/2020 01:50 1.838 01/01/2020 02:41 1.977 01/01/2020 00:09 0.146 01/01/2020 01:00 1.432 01/01/2020 01:51 1.838 01/01/2020 02:42 1.977 01/01/2020 00:10 0.146 01/01/2020 01:01 1.432 01/01/2020 01:52 1.838 01/01/2020 02:43 1.977 01/01/2020 00:11 0.146 01/01/2020 01:02 1.432 01/01/2020 01:53 1.838 01/01/2020 02:44 1.977 01/01/2020 00:12 0.146 01/01/2020 01:03 1.432 01/01/2020 01:54 1.838 01/01/2020 02:45 1.977 01/01/2020 00:13 0.146 01/01/2020 01:04 1.432 01/01/2020 01:55 1.838 01/01/2020 02:46 1.977 01/01/2020 00:14 0.146 01/01/2020 01:05 1.432 01/01/2020 01:56 1.891 01/01/2020 02:47 1.977 01/01/2020 00:15 0.400 01/01/2020 01:06 1.432 01/01/2020 01:57 1.904 01/01/2020 02:48 1.977 01/01/2020 00:16 0.570 01/01/2020 01:07 1.432 01/01/2020 01:58 1.904 01/01/2020 02:49 1.977 01/01/2020 00:17 0.570 01/01/2020 01:08 1.432 01/01/2020 01:59 1.904 01/01/2020 02:50 1.977 01/01/2020 00:18 0.570 01/01/2020 01:09 1.432 01/01/2020 02:00 1.904 01/01/2020 02:51 1.977 01/01/2020 00:19 0.570 01/01/2020 01:10 1.432 01/01/2020 02:01 1.904 01/01/2020 02:52 1.977 01/01/2020 00:20 0.570 01/01/2020 01:11 1.432 01/01/2020 02:02 1.904 01/01/2020 02:53 1.978 01/01/2020 00:21 0.570 01/01/2020 01:12 1.432 01/01/2020 02:03 1.904 01/01/2020 02:54 1.978 01/01/2020 00:22 0.570 01/01/2020 01:13 1.609 01/01/2020 02:04 1.904 01/01/2020 02:55 1.978 01/01/2020 00:23 0.570 01/01/2020 01:14 1.609 01/01/2020 02:05 1.904 01/01/2020 02:56 1.978 01/01/2020 00:24 0.570 01/01/2020 01:15 1.609 01/01/2020 02:06 1.904 01/01/2020 02:57 1.978 01/01/2020 00:25 0.570 01/01/2020 01:16 1.609 01/01/2020 02:07 1.904 01/01/2020 02:58 1.978 01/01/2020 00:26 0.570 01/01/2020 01:17 1.609 01/01/2020 02:08 1.904 01/01/2020 02:59 1.978 01/01/2020 00:27 0.570 01/01/2020 01:18 1.609 01/01/2020 02:09 1.904 01/01/2020 03:00 1.978 01/01/2020 00:28 0.570 01/01/2020 01:19 1.609 01/01/2020 02:10 1.921 01/01/2020 03:01 1.978 01/01/2020 00:29 0.640 01/01/2020 01:20 1.609 01/01/2020 02:11 1.946 01/01/2020 03:02 1.978 01/01/2020 00:30 0.920 01/01/2020 01:21 1.609 01/01/2020 02:12 1.946 01/01/2020 03:03 1.978 01/01/2020 00:31 0.920 01/01/2020 01:22 1.609 01/01/2020 02:13 1.946 01/01/2020 03:04 1.978 01/01/2020 00:32 0.920 01/01/2020 01:23 1.609 01/01/2020 02:14 1.946 01/01/2020 03:05 1.978 01/01/2020 00:33 0.920 01/01/2020 01:24 1.609 01/01/2020 02:15 1.946 01/01/2020 03:06 1.978 01/01/2020 00:34 0.920 01/01/2020 01:25 1.609 01/01/2020 02:16 1.946 01/01/2020 03:07 1.978 01/01/2020 00:35 0.920 01/01/2020 01:26 1.609 01/01/2020 02:17 1.946 01/01/2020 03:08 1.975 01/01/2020 00:36 0.920 01/01/2020 01:27 1.689 01/01/2020 02:18 1.946 01/01/2020 03:09 1.975 01/01/2020 00:37 0.920 01/01/2020 01:28 1.742 01/01/2020 02:19 1.946 01/01/2020 03:10 1.975 01/01/2020 00:38 0.920 01/01/2020 01:29 1.742 01/01/2020 02:20 1.946 01/01/2020 03:11 1.975 01/01/2020 00:39 0.920 01/01/2020 01:30 1.742 01/01/2020 02:21 1.946 01/01/2020 03:12 1.975 01/01/2020 00:40 0.920 01/01/2020 01:31 1.742 01/01/2020 02:22 1.946 01/01/2020 03:13 1.975 01/01/2020 00:41 0.920 01/01/2020 01:32 1.742 01/01/2020 02:23 1.946 01/01/2020 03:14 1.975 01/01/2020 00:42 0.920 01/01/2020 01:33 1.742 01/01/2020 02:24 1.946 01/01/2020 03:15 1.975 01/01/2020 00:43 0.920 01/01/2020 01:34 1.742 01/01/2020 02:25 1.968 01/01/2020 03:16 1.975 01/01/2020 00:44 1.148 01/01/2020 01:35 1.742 01/01/2020 02:26 1.968 01/01/2020 03:17 1.975 01/01/2020 00:45 1.205 01/01/2020 01:36 1.742 01/01/2020 02:27 1.968 01/01/2020 03:18 1.975 01/01/2020 00:46 1.205 01/01/2020 01:37 1.742 01/01/2020 02:28 1.968 01/01/2020 03:19 1.975 01/01/2020 00:47 1.205 01/01/2020 01:38 1.742 01/01/2020 02:29 1.968 01/01/2020 03:20 1.975 01/01/2020 00:48 1.205 01/01/2020 01:39 1.742 01/01/2020 02:30 1.968 01/01/2020 03:21 1.975 01/01/2020 00:49 1.205 01/01/2020 01:40 1.742 01/01/2020 02:31 1.968 01/01/2020 03:22 1.974 01/01/2020 00:50 1.205 01/01/2020 01:41 1.761 01/01/2020 02:32 1.968 01/01/2020 03:23 1.972 01/01/2020 00:51 1.205 01/01/2020 01:42 1.838 01/01/2020 02:33 1.968 01/01/2020 03:24 1.972

©1982-2019 Innovyze Plandescil Limited Page 3 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 03:25 1.972 01/01/2020 04:20 2.033 01/01/2020 05:15 2.259 01/01/2020 06:10 2.877 01/01/2020 03:26 1.972 01/01/2020 04:21 2.041 01/01/2020 05:16 2.259 01/01/2020 06:11 2.877 01/01/2020 03:27 1.972 01/01/2020 04:22 2.041 01/01/2020 05:17 2.283 01/01/2020 06:12 2.877 01/01/2020 03:28 1.972 01/01/2020 04:23 2.041 01/01/2020 05:18 2.376 01/01/2020 06:13 2.877 01/01/2020 03:29 1.972 01/01/2020 04:24 2.041 01/01/2020 05:19 2.376 01/01/2020 06:14 2.877 01/01/2020 03:30 1.972 01/01/2020 04:25 2.041 01/01/2020 05:20 2.376 01/01/2020 06:15 3.008 01/01/2020 03:31 1.972 01/01/2020 04:26 2.041 01/01/2020 05:21 2.376 01/01/2020 06:16 3.096 01/01/2020 03:32 1.972 01/01/2020 04:27 2.041 01/01/2020 05:22 2.376 01/01/2020 06:17 3.096 01/01/2020 03:33 1.972 01/01/2020 04:28 2.041 01/01/2020 05:23 2.376 01/01/2020 06:18 3.096 01/01/2020 03:34 1.972 01/01/2020 04:29 2.041 01/01/2020 05:24 2.376 01/01/2020 06:19 3.096 01/01/2020 03:35 1.972 01/01/2020 04:30 2.041 01/01/2020 05:25 2.376 01/01/2020 06:20 3.096 01/01/2020 03:36 1.972 01/01/2020 04:31 2.041 01/01/2020 05:26 2.376 01/01/2020 06:21 3.096 01/01/2020 03:37 1.974 01/01/2020 04:32 2.041 01/01/2020 05:27 2.376 01/01/2020 06:22 3.096 01/01/2020 03:38 1.974 01/01/2020 04:33 2.041 01/01/2020 05:28 2.376 01/01/2020 06:23 3.096 01/01/2020 03:39 1.974 01/01/2020 04:34 2.062 01/01/2020 05:29 2.376 01/01/2020 06:24 3.096 01/01/2020 03:40 1.974 01/01/2020 04:35 2.093 01/01/2020 05:30 2.376 01/01/2020 06:25 3.096 01/01/2020 03:41 1.974 01/01/2020 04:36 2.093 01/01/2020 05:31 2.376 01/01/2020 06:26 3.096 01/01/2020 03:42 1.974 01/01/2020 04:37 2.093 01/01/2020 05:32 2.489 01/01/2020 06:27 3.096 01/01/2020 03:43 1.974 01/01/2020 04:38 2.093 01/01/2020 05:33 2.517 01/01/2020 06:28 3.096 01/01/2020 03:44 1.974 01/01/2020 04:39 2.093 01/01/2020 05:34 2.517 01/01/2020 06:29 3.145 01/01/2020 03:45 1.974 01/01/2020 04:40 2.093 01/01/2020 05:35 2.517 01/01/2020 06:30 3.342 01/01/2020 03:46 1.974 01/01/2020 04:41 2.093 01/01/2020 05:36 2.517 01/01/2020 06:31 3.342 01/01/2020 03:47 1.974 01/01/2020 04:42 2.093 01/01/2020 05:37 2.517 01/01/2020 06:32 3.342 01/01/2020 03:48 1.974 01/01/2020 04:43 2.093 01/01/2020 05:38 2.517 01/01/2020 06:33 3.342 01/01/2020 03:49 1.974 01/01/2020 04:44 2.093 01/01/2020 05:39 2.517 01/01/2020 06:34 3.342 01/01/2020 03:50 1.974 01/01/2020 04:45 2.093 01/01/2020 05:40 2.517 01/01/2020 06:35 3.342 01/01/2020 03:51 1.980 01/01/2020 04:46 2.093 01/01/2020 05:41 2.517 01/01/2020 06:36 3.342 01/01/2020 03:52 1.984 01/01/2020 04:47 2.093 01/01/2020 05:42 2.517 01/01/2020 06:37 3.342 01/01/2020 03:53 1.984 01/01/2020 04:48 2.093 01/01/2020 05:43 2.517 01/01/2020 06:38 3.342 01/01/2020 03:54 1.984 01/01/2020 04:49 2.166 01/01/2020 05:44 2.517 01/01/2020 06:39 3.342 01/01/2020 03:55 1.984 01/01/2020 04:50 2.166 01/01/2020 05:45 2.517 01/01/2020 06:40 3.342 01/01/2020 03:56 1.984 01/01/2020 04:51 2.166 01/01/2020 05:46 2.584 01/01/2020 06:41 3.342 01/01/2020 03:57 1.984 01/01/2020 04:52 2.166 01/01/2020 05:47 2.684 01/01/2020 06:42 3.342 01/01/2020 03:58 1.984 01/01/2020 04:53 2.166 01/01/2020 05:48 2.684 01/01/2020 06:43 3.342 01/01/2020 03:59 1.984 01/01/2020 04:54 2.166 01/01/2020 05:49 2.684 01/01/2020 06:44 3.559 01/01/2020 04:00 1.984 01/01/2020 04:55 2.166 01/01/2020 05:50 2.684 01/01/2020 06:45 3.613 01/01/2020 04:01 1.984 01/01/2020 04:56 2.166 01/01/2020 05:51 2.684 01/01/2020 06:46 3.613 01/01/2020 04:02 1.984 01/01/2020 04:57 2.166 01/01/2020 05:52 2.684 01/01/2020 06:47 3.613 01/01/2020 04:03 1.984 01/01/2020 04:58 2.166 01/01/2020 05:53 2.684 01/01/2020 06:48 3.613 01/01/2020 04:04 1.984 01/01/2020 04:59 2.166 01/01/2020 05:54 2.684 01/01/2020 06:49 3.613 01/01/2020 04:05 1.988 01/01/2020 05:00 2.166 01/01/2020 05:55 2.684 01/01/2020 06:50 3.613 01/01/2020 04:06 2.005 01/01/2020 05:01 2.166 01/01/2020 05:56 2.684 01/01/2020 06:51 3.613 01/01/2020 04:07 2.005 01/01/2020 05:02 2.166 01/01/2020 05:57 2.684 01/01/2020 06:52 3.613 01/01/2020 04:08 2.005 01/01/2020 05:03 2.222 01/01/2020 05:58 2.684 01/01/2020 06:53 3.613 01/01/2020 04:09 2.005 01/01/2020 05:04 2.259 01/01/2020 05:59 2.684 01/01/2020 06:54 3.613 01/01/2020 04:10 2.005 01/01/2020 05:05 2.259 01/01/2020 06:00 2.684 01/01/2020 06:55 3.613 01/01/2020 04:11 2.005 01/01/2020 05:06 2.259 01/01/2020 06:01 2.877 01/01/2020 06:56 3.613 01/01/2020 04:12 2.005 01/01/2020 05:07 2.259 01/01/2020 06:02 2.877 01/01/2020 06:57 3.613 01/01/2020 04:13 2.005 01/01/2020 05:08 2.259 01/01/2020 06:03 2.877 01/01/2020 06:58 3.732 01/01/2020 04:14 2.005 01/01/2020 05:09 2.259 01/01/2020 06:04 2.877 01/01/2020 06:59 3.910 01/01/2020 04:15 2.005 01/01/2020 05:10 2.259 01/01/2020 06:05 2.877 01/01/2020 07:00 3.910 01/01/2020 04:16 2.005 01/01/2020 05:11 2.259 01/01/2020 06:06 2.877 01/01/2020 07:01 3.910 01/01/2020 04:17 2.005 01/01/2020 05:12 2.259 01/01/2020 06:07 2.877 01/01/2020 07:02 3.910 01/01/2020 04:18 2.005 01/01/2020 05:13 2.259 01/01/2020 06:08 2.877 01/01/2020 07:03 3.910 01/01/2020 04:19 2.005 01/01/2020 05:14 2.259 01/01/2020 06:09 2.877 01/01/2020 07:04 3.910

©1982-2019 Innovyze Plandescil Limited Page 4 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 07:05 3.910 01/01/2020 08:00 5.328 01/01/2020 08:55 7.013 01/01/2020 09:50 8.334 01/01/2020 07:06 3.910 01/01/2020 08:01 5.328 01/01/2020 08:56 7.013 01/01/2020 09:51 8.592 01/01/2020 07:07 3.910 01/01/2020 08:02 5.328 01/01/2020 08:57 7.013 01/01/2020 09:52 8.763 01/01/2020 07:08 3.910 01/01/2020 08:03 5.328 01/01/2020 08:58 7.013 01/01/2020 09:53 8.763 01/01/2020 07:09 3.910 01/01/2020 08:04 5.328 01/01/2020 08:59 7.013 01/01/2020 09:54 8.763 01/01/2020 07:10 3.910 01/01/2020 08:05 5.328 01/01/2020 09:00 7.013 01/01/2020 09:55 8.763 01/01/2020 07:11 3.910 01/01/2020 08:06 5.328 01/01/2020 09:01 7.013 01/01/2020 09:56 8.763 01/01/2020 07:12 3.910 01/01/2020 08:07 5.328 01/01/2020 09:02 7.013 01/01/2020 09:57 8.763 01/01/2020 07:13 4.232 01/01/2020 08:08 5.328 01/01/2020 09:03 7.013 01/01/2020 09:58 8.763 01/01/2020 07:14 4.232 01/01/2020 08:09 5.328 01/01/2020 09:04 7.013 01/01/2020 09:59 8.763 01/01/2020 07:15 4.232 01/01/2020 08:10 5.490 01/01/2020 09:05 7.013 01/01/2020 10:00 8.763 01/01/2020 07:16 4.232 01/01/2020 08:11 5.731 01/01/2020 09:06 7.013 01/01/2020 10:01 8.763 01/01/2020 07:17 4.232 01/01/2020 08:12 5.731 01/01/2020 09:07 7.013 01/01/2020 10:02 8.763 01/01/2020 07:18 4.232 01/01/2020 08:13 5.731 01/01/2020 09:08 7.366 01/01/2020 10:03 8.763 01/01/2020 07:19 4.232 01/01/2020 08:14 5.731 01/01/2020 09:09 7.455 01/01/2020 10:04 8.763 01/01/2020 07:20 4.232 01/01/2020 08:15 5.731 01/01/2020 09:10 7.455 01/01/2020 10:05 8.846 01/01/2020 07:21 4.232 01/01/2020 08:16 5.731 01/01/2020 09:11 7.455 01/01/2020 10:06 9.179 01/01/2020 07:22 4.232 01/01/2020 08:17 5.731 01/01/2020 09:12 7.455 01/01/2020 10:07 9.179 01/01/2020 07:23 4.232 01/01/2020 08:18 5.731 01/01/2020 09:13 7.455 01/01/2020 10:08 9.179 01/01/2020 07:24 4.232 01/01/2020 08:19 5.731 01/01/2020 09:14 7.455 01/01/2020 10:09 9.179 01/01/2020 07:25 4.232 01/01/2020 08:20 5.731 01/01/2020 09:15 7.455 01/01/2020 10:10 9.179 01/01/2020 07:26 4.232 01/01/2020 08:21 5.731 01/01/2020 09:16 7.455 01/01/2020 10:11 9.179 01/01/2020 07:27 4.439 01/01/2020 08:22 5.731 01/01/2020 09:17 7.455 01/01/2020 10:12 9.179 01/01/2020 07:28 4.577 01/01/2020 08:23 5.731 01/01/2020 09:18 7.455 01/01/2020 10:13 9.179 01/01/2020 07:29 4.577 01/01/2020 08:24 5.731 01/01/2020 09:19 7.455 01/01/2020 10:14 9.179 01/01/2020 07:30 4.577 01/01/2020 08:25 6.148 01/01/2020 09:20 7.455 01/01/2020 10:15 9.179 01/01/2020 07:31 4.577 01/01/2020 08:26 6.148 01/01/2020 09:21 7.455 01/01/2020 10:16 9.179 01/01/2020 07:32 4.577 01/01/2020 08:27 6.148 01/01/2020 09:22 7.631 01/01/2020 10:17 9.179 01/01/2020 07:33 4.577 01/01/2020 08:28 6.148 01/01/2020 09:23 7.896 01/01/2020 10:18 9.179 01/01/2020 07:34 4.577 01/01/2020 08:29 6.148 01/01/2020 09:24 7.896 01/01/2020 10:19 9.179 01/01/2020 07:35 4.577 01/01/2020 08:30 6.148 01/01/2020 09:25 7.896 01/01/2020 10:20 9.497 01/01/2020 07:36 4.577 01/01/2020 08:31 6.148 01/01/2020 09:26 7.896 01/01/2020 10:21 9.576 01/01/2020 07:37 4.577 01/01/2020 08:32 6.148 01/01/2020 09:27 7.896 01/01/2020 10:22 9.576 01/01/2020 07:38 4.577 01/01/2020 08:33 6.148 01/01/2020 09:28 7.896 01/01/2020 10:23 9.576 01/01/2020 07:39 4.577 01/01/2020 08:34 6.148 01/01/2020 09:29 7.896 01/01/2020 10:24 9.576 01/01/2020 07:40 4.577 01/01/2020 08:35 6.148 01/01/2020 09:30 7.896 01/01/2020 10:25 9.576 01/01/2020 07:41 4.650 01/01/2020 08:36 6.148 01/01/2020 09:31 7.896 01/01/2020 10:26 9.576 01/01/2020 07:42 4.943 01/01/2020 08:37 6.148 01/01/2020 09:32 7.896 01/01/2020 10:27 9.576 01/01/2020 07:43 4.943 01/01/2020 08:38 6.148 01/01/2020 09:33 7.896 01/01/2020 10:28 9.576 01/01/2020 07:44 4.943 01/01/2020 08:39 6.405 01/01/2020 09:34 7.896 01/01/2020 10:29 9.576 01/01/2020 07:45 4.943 01/01/2020 08:40 6.577 01/01/2020 09:35 7.896 01/01/2020 10:30 9.576 01/01/2020 07:46 4.943 01/01/2020 08:41 6.577 01/01/2020 09:36 7.896 01/01/2020 10:31 9.576 01/01/2020 07:47 4.943 01/01/2020 08:42 6.577 01/01/2020 09:37 8.334 01/01/2020 10:32 9.576 01/01/2020 07:48 4.943 01/01/2020 08:43 6.577 01/01/2020 09:38 8.334 01/01/2020 10:33 9.576 01/01/2020 07:49 4.943 01/01/2020 08:44 6.577 01/01/2020 09:39 8.334 01/01/2020 10:34 9.725 01/01/2020 07:50 4.943 01/01/2020 08:45 6.577 01/01/2020 09:40 8.334 01/01/2020 10:35 9.948 01/01/2020 07:51 4.943 01/01/2020 08:46 6.577 01/01/2020 09:41 8.334 01/01/2020 10:36 9.948 01/01/2020 07:52 4.943 01/01/2020 08:47 6.577 01/01/2020 09:42 8.334 01/01/2020 10:37 9.948 01/01/2020 07:53 4.943 01/01/2020 08:48 6.577 01/01/2020 09:43 8.334 01/01/2020 10:38 9.948 01/01/2020 07:54 4.943 01/01/2020 08:49 6.577 01/01/2020 09:44 8.334 01/01/2020 10:39 9.948 01/01/2020 07:55 4.943 01/01/2020 08:50 6.577 01/01/2020 09:45 8.334 01/01/2020 10:40 9.948 01/01/2020 07:56 5.251 01/01/2020 08:51 6.577 01/01/2020 09:46 8.334 01/01/2020 10:41 9.948 01/01/2020 07:57 5.328 01/01/2020 08:52 6.577 01/01/2020 09:47 8.334 01/01/2020 10:42 9.948 01/01/2020 07:58 5.328 01/01/2020 08:53 6.664 01/01/2020 09:48 8.334 01/01/2020 10:43 9.948 01/01/2020 07:59 5.328 01/01/2020 08:54 7.013 01/01/2020 09:49 8.334 01/01/2020 10:44 9.948

©1982-2019 Innovyze Plandescil Limited Page 5 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 10:45 9.948 01/01/2020 11:40 11.068 01/01/2020 12:35 10.857 01/01/2020 13:30 9.576 01/01/2020 10:46 9.948 01/01/2020 11:41 11.068 01/01/2020 12:36 10.857 01/01/2020 13:31 9.576 01/01/2020 10:47 9.948 01/01/2020 11:42 11.068 01/01/2020 12:37 10.857 01/01/2020 13:32 9.576 01/01/2020 10:48 9.948 01/01/2020 11:43 11.068 01/01/2020 12:38 10.857 01/01/2020 13:33 9.576 01/01/2020 10:49 10.290 01/01/2020 11:44 11.068 01/01/2020 12:39 10.857 01/01/2020 13:34 9.576 01/01/2020 10:50 10.290 01/01/2020 11:45 11.068 01/01/2020 12:40 10.857 01/01/2020 13:35 9.576 01/01/2020 10:51 10.290 01/01/2020 11:46 11.130 01/01/2020 12:41 10.857 01/01/2020 13:36 9.576 01/01/2020 10:52 10.290 01/01/2020 11:47 11.222 01/01/2020 12:42 10.857 01/01/2020 13:37 9.576 01/01/2020 10:53 10.290 01/01/2020 11:48 11.222 01/01/2020 12:43 10.857 01/01/2020 13:38 9.576 01/01/2020 10:54 10.290 01/01/2020 11:49 11.222 01/01/2020 12:44 10.648 01/01/2020 13:39 9.576 01/01/2020 10:55 10.290 01/01/2020 11:50 11.222 01/01/2020 12:45 10.596 01/01/2020 13:40 9.576 01/01/2020 10:56 10.290 01/01/2020 11:51 11.222 01/01/2020 12:46 10.596 01/01/2020 13:41 9.497 01/01/2020 10:57 10.290 01/01/2020 11:52 11.222 01/01/2020 12:47 10.596 01/01/2020 13:42 9.179 01/01/2020 10:58 10.290 01/01/2020 11:53 11.222 01/01/2020 12:48 10.596 01/01/2020 13:43 9.179 01/01/2020 10:59 10.290 01/01/2020 11:54 11.222 01/01/2020 12:49 10.596 01/01/2020 13:44 9.179 01/01/2020 11:00 10.290 01/01/2020 11:55 11.222 01/01/2020 12:50 10.596 01/01/2020 13:45 9.179 01/01/2020 11:01 10.290 01/01/2020 11:56 11.222 01/01/2020 12:51 10.596 01/01/2020 13:46 9.179 01/01/2020 11:02 10.290 01/01/2020 11:57 11.222 01/01/2020 12:52 10.596 01/01/2020 13:47 9.179 01/01/2020 11:03 10.473 01/01/2020 11:58 11.222 01/01/2020 12:53 10.596 01/01/2020 13:48 9.179 01/01/2020 11:04 10.596 01/01/2020 11:59 11.222 01/01/2020 12:54 10.596 01/01/2020 13:49 9.179 01/01/2020 11:05 10.596 01/01/2020 12:00 11.222 01/01/2020 12:55 10.596 01/01/2020 13:50 9.179 01/01/2020 11:06 10.596 01/01/2020 12:01 11.222 01/01/2020 12:56 10.596 01/01/2020 13:51 9.179 01/01/2020 11:07 10.596 01/01/2020 12:02 11.222 01/01/2020 12:57 10.596 01/01/2020 13:52 9.179 01/01/2020 11:08 10.596 01/01/2020 12:03 11.222 01/01/2020 12:58 10.473 01/01/2020 13:53 9.179 01/01/2020 11:09 10.596 01/01/2020 12:04 11.222 01/01/2020 12:59 10.290 01/01/2020 13:54 9.179 01/01/2020 11:10 10.596 01/01/2020 12:05 11.222 01/01/2020 13:00 10.290 01/01/2020 13:55 9.179 01/01/2020 11:11 10.596 01/01/2020 12:06 11.222 01/01/2020 13:01 10.290 01/01/2020 13:56 8.846 01/01/2020 11:12 10.596 01/01/2020 12:07 11.222 01/01/2020 13:02 10.290 01/01/2020 13:57 8.763 01/01/2020 11:13 10.596 01/01/2020 12:08 11.222 01/01/2020 13:03 10.290 01/01/2020 13:58 8.763 01/01/2020 11:14 10.596 01/01/2020 12:09 11.222 01/01/2020 13:04 10.290 01/01/2020 13:59 8.763 01/01/2020 11:15 10.596 01/01/2020 12:10 11.222 01/01/2020 13:05 10.290 01/01/2020 14:00 8.763 01/01/2020 11:16 10.596 01/01/2020 12:11 11.222 01/01/2020 13:06 10.290 01/01/2020 14:01 8.763 01/01/2020 11:17 10.648 01/01/2020 12:12 11.222 01/01/2020 13:07 10.290 01/01/2020 14:02 8.763 01/01/2020 11:18 10.857 01/01/2020 12:13 11.222 01/01/2020 13:08 10.290 01/01/2020 14:03 8.763 01/01/2020 11:19 10.857 01/01/2020 12:14 11.222 01/01/2020 13:09 10.290 01/01/2020 14:04 8.763 01/01/2020 11:20 10.857 01/01/2020 12:15 11.130 01/01/2020 13:10 10.290 01/01/2020 14:05 8.763 01/01/2020 11:21 10.857 01/01/2020 12:16 11.068 01/01/2020 13:11 10.290 01/01/2020 14:06 8.763 01/01/2020 11:22 10.857 01/01/2020 12:17 11.068 01/01/2020 13:12 10.290 01/01/2020 14:07 8.763 01/01/2020 11:23 10.857 01/01/2020 12:18 11.068 01/01/2020 13:13 9.948 01/01/2020 14:08 8.763 01/01/2020 11:24 10.857 01/01/2020 12:19 11.068 01/01/2020 13:14 9.948 01/01/2020 14:09 8.763 01/01/2020 11:25 10.857 01/01/2020 12:20 11.068 01/01/2020 13:15 9.948 01/01/2020 14:10 8.592 01/01/2020 11:26 10.857 01/01/2020 12:21 11.068 01/01/2020 13:16 9.948 01/01/2020 14:11 8.334 01/01/2020 11:27 10.857 01/01/2020 12:22 11.068 01/01/2020 13:17 9.948 01/01/2020 14:12 8.334 01/01/2020 11:28 10.857 01/01/2020 12:23 11.068 01/01/2020 13:18 9.948 01/01/2020 14:13 8.334 01/01/2020 11:29 10.857 01/01/2020 12:24 11.068 01/01/2020 13:19 9.948 01/01/2020 14:14 8.334 01/01/2020 11:30 10.857 01/01/2020 12:25 11.068 01/01/2020 13:20 9.948 01/01/2020 14:15 8.334 01/01/2020 11:31 10.857 01/01/2020 12:26 11.068 01/01/2020 13:21 9.948 01/01/2020 14:16 8.334 01/01/2020 11:32 11.026 01/01/2020 12:27 11.068 01/01/2020 13:22 9.948 01/01/2020 14:17 8.334 01/01/2020 11:33 11.068 01/01/2020 12:28 11.068 01/01/2020 13:23 9.948 01/01/2020 14:18 8.334 01/01/2020 11:34 11.068 01/01/2020 12:29 11.026 01/01/2020 13:24 9.948 01/01/2020 14:19 8.334 01/01/2020 11:35 11.068 01/01/2020 12:30 10.857 01/01/2020 13:25 9.948 01/01/2020 14:20 8.334 01/01/2020 11:36 11.068 01/01/2020 12:31 10.857 01/01/2020 13:26 9.948 01/01/2020 14:21 8.334 01/01/2020 11:37 11.068 01/01/2020 12:32 10.857 01/01/2020 13:27 9.725 01/01/2020 14:22 8.334 01/01/2020 11:38 11.068 01/01/2020 12:33 10.857 01/01/2020 13:28 9.576 01/01/2020 14:23 8.334 01/01/2020 11:39 11.068 01/01/2020 12:34 10.857 01/01/2020 13:29 9.576 01/01/2020 14:24 8.334

©1982-2019 Innovyze Plandescil Limited Page 6 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 14:25 7.896 01/01/2020 15:20 6.577 01/01/2020 16:15 4.943 01/01/2020 17:10 3.613 01/01/2020 14:26 7.896 01/01/2020 15:21 6.577 01/01/2020 16:16 4.943 01/01/2020 17:11 3.613 01/01/2020 14:27 7.896 01/01/2020 15:22 6.405 01/01/2020 16:17 4.943 01/01/2020 17:12 3.613 01/01/2020 14:28 7.896 01/01/2020 15:23 6.148 01/01/2020 16:18 4.943 01/01/2020 17:13 3.613 01/01/2020 14:29 7.896 01/01/2020 15:24 6.148 01/01/2020 16:19 4.943 01/01/2020 17:14 3.613 01/01/2020 14:30 7.896 01/01/2020 15:25 6.148 01/01/2020 16:20 4.650 01/01/2020 17:15 3.613 01/01/2020 14:31 7.896 01/01/2020 15:26 6.148 01/01/2020 16:21 4.577 01/01/2020 17:16 3.613 01/01/2020 14:32 7.896 01/01/2020 15:27 6.148 01/01/2020 16:22 4.577 01/01/2020 17:17 3.559 01/01/2020 14:33 7.896 01/01/2020 15:28 6.148 01/01/2020 16:23 4.577 01/01/2020 17:18 3.342 01/01/2020 14:34 7.896 01/01/2020 15:29 6.148 01/01/2020 16:24 4.577 01/01/2020 17:19 3.342 01/01/2020 14:35 7.896 01/01/2020 15:30 6.148 01/01/2020 16:25 4.577 01/01/2020 17:20 3.342 01/01/2020 14:36 7.896 01/01/2020 15:31 6.148 01/01/2020 16:26 4.577 01/01/2020 17:21 3.342 01/01/2020 14:37 7.896 01/01/2020 15:32 6.148 01/01/2020 16:27 4.577 01/01/2020 17:22 3.342 01/01/2020 14:38 7.896 01/01/2020 15:33 6.148 01/01/2020 16:28 4.577 01/01/2020 17:23 3.342 01/01/2020 14:39 7.631 01/01/2020 15:34 6.148 01/01/2020 16:29 4.577 01/01/2020 17:24 3.342 01/01/2020 14:40 7.455 01/01/2020 15:35 6.148 01/01/2020 16:30 4.577 01/01/2020 17:25 3.342 01/01/2020 14:41 7.455 01/01/2020 15:36 6.148 01/01/2020 16:31 4.577 01/01/2020 17:26 3.342 01/01/2020 14:42 7.455 01/01/2020 15:37 5.731 01/01/2020 16:32 4.577 01/01/2020 17:27 3.342 01/01/2020 14:43 7.455 01/01/2020 15:38 5.731 01/01/2020 16:33 4.577 01/01/2020 17:28 3.342 01/01/2020 14:44 7.455 01/01/2020 15:39 5.731 01/01/2020 16:34 4.439 01/01/2020 17:29 3.342 01/01/2020 14:45 7.455 01/01/2020 15:40 5.731 01/01/2020 16:35 4.232 01/01/2020 17:30 3.342 01/01/2020 14:46 7.455 01/01/2020 15:41 5.731 01/01/2020 16:36 4.232 01/01/2020 17:31 3.342 01/01/2020 14:47 7.455 01/01/2020 15:42 5.731 01/01/2020 16:37 4.232 01/01/2020 17:32 3.145 01/01/2020 14:48 7.455 01/01/2020 15:43 5.731 01/01/2020 16:38 4.232 01/01/2020 17:33 3.096 01/01/2020 14:49 7.455 01/01/2020 15:44 5.731 01/01/2020 16:39 4.232 01/01/2020 17:34 3.096 01/01/2020 14:50 7.455 01/01/2020 15:45 5.731 01/01/2020 16:40 4.232 01/01/2020 17:35 3.096 01/01/2020 14:51 7.455 01/01/2020 15:46 5.731 01/01/2020 16:41 4.232 01/01/2020 17:36 3.096 01/01/2020 14:52 7.455 01/01/2020 15:47 5.731 01/01/2020 16:42 4.232 01/01/2020 17:37 3.096 01/01/2020 14:53 7.366 01/01/2020 15:48 5.731 01/01/2020 16:43 4.232 01/01/2020 17:38 3.096 01/01/2020 14:54 7.013 01/01/2020 15:49 5.731 01/01/2020 16:44 4.232 01/01/2020 17:39 3.096 01/01/2020 14:55 7.013 01/01/2020 15:50 5.731 01/01/2020 16:45 4.232 01/01/2020 17:40 3.096 01/01/2020 14:56 7.013 01/01/2020 15:51 5.490 01/01/2020 16:46 4.232 01/01/2020 17:41 3.096 01/01/2020 14:57 7.013 01/01/2020 15:52 5.328 01/01/2020 16:47 4.232 01/01/2020 17:42 3.096 01/01/2020 14:58 7.013 01/01/2020 15:53 5.328 01/01/2020 16:48 4.232 01/01/2020 17:43 3.096 01/01/2020 14:59 7.013 01/01/2020 15:54 5.328 01/01/2020 16:49 3.910 01/01/2020 17:44 3.096 01/01/2020 15:00 7.013 01/01/2020 15:55 5.328 01/01/2020 16:50 3.910 01/01/2020 17:45 3.096 01/01/2020 15:01 7.013 01/01/2020 15:56 5.328 01/01/2020 16:51 3.910 01/01/2020 17:46 3.008 01/01/2020 15:02 7.013 01/01/2020 15:57 5.328 01/01/2020 16:52 3.910 01/01/2020 17:47 2.877 01/01/2020 15:03 7.013 01/01/2020 15:58 5.328 01/01/2020 16:53 3.910 01/01/2020 17:48 2.877 01/01/2020 15:04 7.013 01/01/2020 15:59 5.328 01/01/2020 16:54 3.910 01/01/2020 17:49 2.877 01/01/2020 15:05 7.013 01/01/2020 16:00 5.328 01/01/2020 16:55 3.910 01/01/2020 17:50 2.877 01/01/2020 15:06 7.013 01/01/2020 16:01 5.328 01/01/2020 16:56 3.910 01/01/2020 17:51 2.877 01/01/2020 15:07 7.013 01/01/2020 16:02 5.328 01/01/2020 16:57 3.910 01/01/2020 17:52 2.877 01/01/2020 15:08 6.664 01/01/2020 16:03 5.328 01/01/2020 16:58 3.910 01/01/2020 17:53 2.877 01/01/2020 15:09 6.577 01/01/2020 16:04 5.328 01/01/2020 16:59 3.910 01/01/2020 17:54 2.877 01/01/2020 15:10 6.577 01/01/2020 16:05 5.251 01/01/2020 17:00 3.910 01/01/2020 17:55 2.877 01/01/2020 15:11 6.577 01/01/2020 16:06 4.943 01/01/2020 17:01 3.910 01/01/2020 17:56 2.877 01/01/2020 15:12 6.577 01/01/2020 16:07 4.943 01/01/2020 17:02 3.910 01/01/2020 17:57 2.877 01/01/2020 15:13 6.577 01/01/2020 16:08 4.943 01/01/2020 17:03 3.732 01/01/2020 17:58 2.877 01/01/2020 15:14 6.577 01/01/2020 16:09 4.943 01/01/2020 17:04 3.613 01/01/2020 17:59 2.877 01/01/2020 15:15 6.577 01/01/2020 16:10 4.943 01/01/2020 17:05 3.613 01/01/2020 18:00 2.877 01/01/2020 15:16 6.577 01/01/2020 16:11 4.943 01/01/2020 17:06 3.613 01/01/2020 18:01 2.684 01/01/2020 15:17 6.577 01/01/2020 16:12 4.943 01/01/2020 17:07 3.613 01/01/2020 18:02 2.684 01/01/2020 15:18 6.577 01/01/2020 16:13 4.943 01/01/2020 17:08 3.613 01/01/2020 18:03 2.684 01/01/2020 15:19 6.577 01/01/2020 16:14 4.943 01/01/2020 17:09 3.613 01/01/2020 18:04 2.684

©1982-2019 Innovyze Plandescil Limited Page 7 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 18:05 2.684 01/01/2020 19:00 2.166 01/01/2020 19:55 2.005 01/01/2020 20:50 1.975 01/01/2020 18:06 2.684 01/01/2020 19:01 2.166 01/01/2020 19:56 1.988 01/01/2020 20:51 1.975 01/01/2020 18:07 2.684 01/01/2020 19:02 2.166 01/01/2020 19:57 1.984 01/01/2020 20:52 1.975 01/01/2020 18:08 2.684 01/01/2020 19:03 2.166 01/01/2020 19:58 1.984 01/01/2020 20:53 1.976 01/01/2020 18:09 2.684 01/01/2020 19:04 2.166 01/01/2020 19:59 1.984 01/01/2020 20:54 1.978 01/01/2020 18:10 2.684 01/01/2020 19:05 2.166 01/01/2020 20:00 1.984 01/01/2020 20:55 1.978 01/01/2020 18:11 2.684 01/01/2020 19:06 2.166 01/01/2020 20:01 1.984 01/01/2020 20:56 1.978 01/01/2020 18:12 2.684 01/01/2020 19:07 2.166 01/01/2020 20:02 1.984 01/01/2020 20:57 1.978 01/01/2020 18:13 2.684 01/01/2020 19:08 2.166 01/01/2020 20:03 1.984 01/01/2020 20:58 1.978 01/01/2020 18:14 2.684 01/01/2020 19:09 2.166 01/01/2020 20:04 1.984 01/01/2020 20:59 1.978 01/01/2020 18:15 2.584 01/01/2020 19:10 2.166 01/01/2020 20:05 1.984 01/01/2020 21:00 1.978 01/01/2020 18:16 2.517 01/01/2020 19:11 2.166 01/01/2020 20:06 1.984 01/01/2020 21:01 1.978 01/01/2020 18:17 2.517 01/01/2020 19:12 2.166 01/01/2020 20:07 1.984 01/01/2020 21:02 1.978 01/01/2020 18:18 2.517 01/01/2020 19:13 2.093 01/01/2020 20:08 1.984 01/01/2020 21:03 1.978 01/01/2020 18:19 2.517 01/01/2020 19:14 2.093 01/01/2020 20:09 1.984 01/01/2020 21:04 1.978 01/01/2020 18:20 2.517 01/01/2020 19:15 2.093 01/01/2020 20:10 1.980 01/01/2020 21:05 1.978 01/01/2020 18:21 2.517 01/01/2020 19:16 2.093 01/01/2020 20:11 1.974 01/01/2020 21:06 1.978 01/01/2020 18:22 2.517 01/01/2020 19:17 2.093 01/01/2020 20:12 1.974 01/01/2020 21:07 1.978 01/01/2020 18:23 2.517 01/01/2020 19:18 2.093 01/01/2020 20:13 1.974 01/01/2020 21:08 1.978 01/01/2020 18:24 2.517 01/01/2020 19:19 2.093 01/01/2020 20:14 1.974 01/01/2020 21:09 1.977 01/01/2020 18:25 2.517 01/01/2020 19:20 2.093 01/01/2020 20:15 1.974 01/01/2020 21:10 1.977 01/01/2020 18:26 2.517 01/01/2020 19:21 2.093 01/01/2020 20:16 1.974 01/01/2020 21:11 1.977 01/01/2020 18:27 2.517 01/01/2020 19:22 2.093 01/01/2020 20:17 1.974 01/01/2020 21:12 1.977 01/01/2020 18:28 2.517 01/01/2020 19:23 2.093 01/01/2020 20:18 1.974 01/01/2020 21:13 1.977 01/01/2020 18:29 2.489 01/01/2020 19:24 2.093 01/01/2020 20:19 1.974 01/01/2020 21:14 1.977 01/01/2020 18:30 2.376 01/01/2020 19:25 2.093 01/01/2020 20:20 1.974 01/01/2020 21:15 1.977 01/01/2020 18:31 2.376 01/01/2020 19:26 2.093 01/01/2020 20:21 1.974 01/01/2020 21:16 1.977 01/01/2020 18:32 2.376 01/01/2020 19:27 2.062 01/01/2020 20:22 1.974 01/01/2020 21:17 1.977 01/01/2020 18:33 2.376 01/01/2020 19:28 2.041 01/01/2020 20:23 1.974 01/01/2020 21:18 1.977 01/01/2020 18:34 2.376 01/01/2020 19:29 2.041 01/01/2020 20:24 1.974 01/01/2020 21:19 1.977 01/01/2020 18:35 2.376 01/01/2020 19:30 2.041 01/01/2020 20:25 1.972 01/01/2020 21:20 1.977 01/01/2020 18:36 2.376 01/01/2020 19:31 2.041 01/01/2020 20:26 1.972 01/01/2020 21:21 1.977 01/01/2020 18:37 2.376 01/01/2020 19:32 2.041 01/01/2020 20:27 1.972 01/01/2020 21:22 1.974 01/01/2020 18:38 2.376 01/01/2020 19:33 2.041 01/01/2020 20:28 1.972 01/01/2020 21:23 1.968 01/01/2020 18:39 2.376 01/01/2020 19:34 2.041 01/01/2020 20:29 1.972 01/01/2020 21:24 1.968 01/01/2020 18:40 2.376 01/01/2020 19:35 2.041 01/01/2020 20:30 1.972 01/01/2020 21:25 1.968 01/01/2020 18:41 2.376 01/01/2020 19:36 2.041 01/01/2020 20:31 1.972 01/01/2020 21:26 1.968 01/01/2020 18:42 2.376 01/01/2020 19:37 2.041 01/01/2020 20:32 1.972 01/01/2020 21:27 1.968 01/01/2020 18:43 2.376 01/01/2020 19:38 2.041 01/01/2020 20:33 1.972 01/01/2020 21:28 1.968 01/01/2020 18:44 2.283 01/01/2020 19:39 2.041 01/01/2020 20:34 1.972 01/01/2020 21:29 1.968 01/01/2020 18:45 2.259 01/01/2020 19:40 2.041 01/01/2020 20:35 1.972 01/01/2020 21:30 1.968 01/01/2020 18:46 2.259 01/01/2020 19:41 2.033 01/01/2020 20:36 1.972 01/01/2020 21:31 1.968 01/01/2020 18:47 2.259 01/01/2020 19:42 2.005 01/01/2020 20:37 1.972 01/01/2020 21:32 1.968 01/01/2020 18:48 2.259 01/01/2020 19:43 2.005 01/01/2020 20:38 1.972 01/01/2020 21:33 1.968 01/01/2020 18:49 2.259 01/01/2020 19:44 2.005 01/01/2020 20:39 1.974 01/01/2020 21:34 1.968 01/01/2020 18:50 2.259 01/01/2020 19:45 2.005 01/01/2020 20:40 1.975 01/01/2020 21:35 1.968 01/01/2020 18:51 2.259 01/01/2020 19:46 2.005 01/01/2020 20:41 1.975 01/01/2020 21:36 1.968 01/01/2020 18:52 2.259 01/01/2020 19:47 2.005 01/01/2020 20:42 1.975 01/01/2020 21:37 1.946 01/01/2020 18:53 2.259 01/01/2020 19:48 2.005 01/01/2020 20:43 1.975 01/01/2020 21:38 1.946 01/01/2020 18:54 2.259 01/01/2020 19:49 2.005 01/01/2020 20:44 1.975 01/01/2020 21:39 1.946 01/01/2020 18:55 2.259 01/01/2020 19:50 2.005 01/01/2020 20:45 1.975 01/01/2020 21:40 1.946 01/01/2020 18:56 2.259 01/01/2020 19:51 2.005 01/01/2020 20:46 1.975 01/01/2020 21:41 1.946 01/01/2020 18:57 2.259 01/01/2020 19:52 2.005 01/01/2020 20:47 1.975 01/01/2020 21:42 1.946 01/01/2020 18:58 2.222 01/01/2020 19:53 2.005 01/01/2020 20:48 1.975 01/01/2020 21:43 1.946 01/01/2020 18:59 2.166 01/01/2020 19:54 2.005 01/01/2020 20:49 1.975 01/01/2020 21:44 1.946

©1982-2019 Innovyze Plandescil Limited Page 8 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

01/01/2020 21:45 1.946 01/01/2020 22:40 1.609 01/01/2020 23:35 0.570 02/01/2020 00:30 0.478 01/01/2020 21:46 1.946 01/01/2020 22:41 1.609 01/01/2020 23:36 0.570 02/01/2020 00:31 0.478 01/01/2020 21:47 1.946 01/01/2020 22:42 1.609 01/01/2020 23:37 0.570 02/01/2020 00:32 0.478 01/01/2020 21:48 1.946 01/01/2020 22:43 1.609 01/01/2020 23:38 0.570 02/01/2020 00:33 0.478 01/01/2020 21:49 1.946 01/01/2020 22:44 1.609 01/01/2020 23:39 0.570 02/01/2020 00:34 0.478 01/01/2020 21:50 1.946 01/01/2020 22:45 1.609 01/01/2020 23:40 0.570 02/01/2020 00:35 0.478 01/01/2020 21:51 1.921 01/01/2020 22:46 1.609 01/01/2020 23:41 0.570 02/01/2020 00:36 0.478 01/01/2020 21:52 1.904 01/01/2020 22:47 1.609 01/01/2020 23:42 0.570 02/01/2020 00:37 0.478 01/01/2020 21:53 1.904 01/01/2020 22:48 1.609 01/01/2020 23:43 0.570 02/01/2020 00:38 0.478 01/01/2020 21:54 1.904 01/01/2020 22:49 1.432 01/01/2020 23:44 0.570 02/01/2020 00:39 0.478 01/01/2020 21:55 1.904 01/01/2020 22:50 1.432 01/01/2020 23:45 0.570 02/01/2020 00:40 0.478 01/01/2020 21:56 1.904 01/01/2020 22:51 1.432 01/01/2020 23:46 0.400 02/01/2020 00:41 0.478 01/01/2020 21:57 1.904 01/01/2020 22:52 1.432 01/01/2020 23:47 0.146 02/01/2020 00:42 0.478 01/01/2020 21:58 1.904 01/01/2020 22:53 1.432 01/01/2020 23:48 0.146 02/01/2020 00:43 0.478 01/01/2020 21:59 1.904 01/01/2020 22:54 1.432 01/01/2020 23:49 0.146 02/01/2020 00:44 0.596 01/01/2020 22:00 1.904 01/01/2020 22:55 1.432 01/01/2020 23:50 0.146 02/01/2020 00:45 0.625 01/01/2020 22:01 1.904 01/01/2020 22:56 1.432 01/01/2020 23:51 0.146 02/01/2020 00:46 0.625 01/01/2020 22:02 1.904 01/01/2020 22:57 1.432 01/01/2020 23:52 0.146 02/01/2020 00:47 0.625 01/01/2020 22:03 1.904 01/01/2020 22:58 1.432 01/01/2020 23:53 0.146 02/01/2020 00:48 0.625 01/01/2020 22:04 1.904 01/01/2020 22:59 1.432 01/01/2020 23:54 0.146 02/01/2020 00:49 0.625 01/01/2020 22:05 1.891 01/01/2020 23:00 1.432 01/01/2020 23:55 0.146 02/01/2020 00:50 0.625 01/01/2020 22:06 1.838 01/01/2020 23:01 1.432 01/01/2020 23:56 0.146 02/01/2020 00:51 0.625 01/01/2020 22:07 1.838 01/01/2020 23:02 1.432 01/01/2020 23:57 0.146 02/01/2020 00:52 0.625 01/01/2020 22:08 1.838 01/01/2020 23:03 1.296 01/01/2020 23:58 0.146 02/01/2020 00:53 0.625 01/01/2020 22:09 1.838 01/01/2020 23:04 1.205 01/01/2020 23:59 0.146 02/01/2020 00:54 0.625 01/01/2020 22:10 1.838 01/01/2020 23:05 1.205 02/01/2020 00:00 0.146 02/01/2020 00:55 0.625 01/01/2020 22:11 1.838 01/01/2020 23:06 1.205 02/01/2020 00:01 0.076 02/01/2020 00:56 0.625 01/01/2020 22:12 1.838 01/01/2020 23:07 1.205 02/01/2020 00:02 0.000 02/01/2020 00:57 0.625 01/01/2020 22:13 1.838 01/01/2020 23:08 1.205 02/01/2020 00:03 0.076 02/01/2020 00:58 0.673 01/01/2020 22:14 1.838 01/01/2020 23:09 1.205 02/01/2020 00:04 0.076 02/01/2020 00:59 0.743 01/01/2020 22:15 1.838 01/01/2020 23:10 1.205 02/01/2020 00:05 0.076 02/01/2020 01:00 0.743 01/01/2020 22:16 1.838 01/01/2020 23:11 1.205 02/01/2020 00:06 0.076 02/01/2020 01:01 0.743 01/01/2020 22:17 1.838 01/01/2020 23:12 1.205 02/01/2020 00:07 0.076 02/01/2020 01:02 0.743 01/01/2020 22:18 1.838 01/01/2020 23:13 1.205 02/01/2020 00:08 0.076 02/01/2020 01:03 0.743 01/01/2020 22:19 1.838 01/01/2020 23:14 1.205 02/01/2020 00:09 0.076 02/01/2020 01:04 0.743 01/01/2020 22:20 1.761 01/01/2020 23:15 1.205 02/01/2020 00:10 0.076 02/01/2020 01:05 0.743 01/01/2020 22:21 1.742 01/01/2020 23:16 1.205 02/01/2020 00:11 0.076 02/01/2020 01:06 0.743 01/01/2020 22:22 1.742 01/01/2020 23:17 1.148 02/01/2020 00:12 0.076 02/01/2020 01:07 0.743 01/01/2020 22:23 1.742 01/01/2020 23:18 0.920 02/01/2020 00:13 0.076 02/01/2020 01:08 0.743 01/01/2020 22:24 1.742 01/01/2020 23:19 0.920 02/01/2020 00:14 0.076 02/01/2020 01:09 0.743 01/01/2020 22:25 1.742 01/01/2020 23:20 0.920 02/01/2020 00:15 0.208 02/01/2020 01:10 0.743 01/01/2020 22:26 1.742 01/01/2020 23:21 0.920 02/01/2020 00:16 0.296 02/01/2020 01:11 0.743 01/01/2020 22:27 1.742 01/01/2020 23:22 0.920 02/01/2020 00:17 0.296 02/01/2020 01:12 0.743 01/01/2020 22:28 1.742 01/01/2020 23:23 0.920 02/01/2020 00:18 0.296 02/01/2020 01:13 0.835 01/01/2020 22:29 1.742 01/01/2020 23:24 0.920 02/01/2020 00:19 0.296 02/01/2020 01:14 0.835 01/01/2020 22:30 1.742 01/01/2020 23:25 0.920 02/01/2020 00:20 0.296 02/01/2020 01:15 0.835 01/01/2020 22:31 1.742 01/01/2020 23:26 0.920 02/01/2020 00:21 0.296 02/01/2020 01:16 0.835 01/01/2020 22:32 1.742 01/01/2020 23:27 0.920 02/01/2020 00:22 0.296 02/01/2020 01:17 0.835 01/01/2020 22:33 1.742 01/01/2020 23:28 0.920 02/01/2020 00:23 0.296 02/01/2020 01:18 0.835 01/01/2020 22:34 1.689 01/01/2020 23:29 0.920 02/01/2020 00:24 0.296 02/01/2020 01:19 0.835 01/01/2020 22:35 1.609 01/01/2020 23:30 0.920 02/01/2020 00:25 0.296 02/01/2020 01:20 0.835 01/01/2020 22:36 1.609 01/01/2020 23:31 0.920 02/01/2020 00:26 0.296 02/01/2020 01:21 0.835 01/01/2020 22:37 1.609 01/01/2020 23:32 0.640 02/01/2020 00:27 0.296 02/01/2020 01:22 0.835 01/01/2020 22:38 1.609 01/01/2020 23:33 0.570 02/01/2020 00:28 0.296 02/01/2020 01:23 0.835 01/01/2020 22:39 1.609 01/01/2020 23:34 0.570 02/01/2020 00:29 0.332 02/01/2020 01:24 0.835

©1982-2019 Innovyze Plandescil Limited Page 9 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 01:25 0.835 02/01/2020 02:20 1.010 02/01/2020 03:15 1.025 02/01/2020 04:10 1.041 02/01/2020 01:26 0.835 02/01/2020 02:21 1.010 02/01/2020 03:16 1.025 02/01/2020 04:11 1.041 02/01/2020 01:27 0.877 02/01/2020 02:22 1.010 02/01/2020 03:17 1.025 02/01/2020 04:12 1.041 02/01/2020 01:28 0.904 02/01/2020 02:23 1.010 02/01/2020 03:18 1.025 02/01/2020 04:13 1.041 02/01/2020 01:29 0.904 02/01/2020 02:24 1.010 02/01/2020 03:19 1.025 02/01/2020 04:14 1.041 02/01/2020 01:30 0.904 02/01/2020 02:25 1.022 02/01/2020 03:20 1.025 02/01/2020 04:15 1.041 02/01/2020 01:31 0.904 02/01/2020 02:26 1.022 02/01/2020 03:21 1.025 02/01/2020 04:16 1.041 02/01/2020 01:32 0.904 02/01/2020 02:27 1.022 02/01/2020 03:22 1.025 02/01/2020 04:17 1.041 02/01/2020 01:33 0.904 02/01/2020 02:28 1.022 02/01/2020 03:23 1.024 02/01/2020 04:18 1.041 02/01/2020 01:34 0.904 02/01/2020 02:29 1.022 02/01/2020 03:24 1.024 02/01/2020 04:19 1.041 02/01/2020 01:35 0.904 02/01/2020 02:30 1.022 02/01/2020 03:25 1.024 02/01/2020 04:20 1.056 02/01/2020 01:36 0.904 02/01/2020 02:31 1.022 02/01/2020 03:26 1.024 02/01/2020 04:21 1.059 02/01/2020 01:37 0.904 02/01/2020 02:32 1.022 02/01/2020 03:27 1.024 02/01/2020 04:22 1.059 02/01/2020 01:38 0.904 02/01/2020 02:33 1.022 02/01/2020 03:28 1.024 02/01/2020 04:23 1.059 02/01/2020 01:39 0.904 02/01/2020 02:34 1.022 02/01/2020 03:29 1.024 02/01/2020 04:24 1.059 02/01/2020 01:40 0.904 02/01/2020 02:35 1.022 02/01/2020 03:30 1.024 02/01/2020 04:25 1.059 02/01/2020 01:41 0.914 02/01/2020 02:36 1.022 02/01/2020 03:31 1.024 02/01/2020 04:26 1.059 02/01/2020 01:42 0.954 02/01/2020 02:37 1.022 02/01/2020 03:32 1.024 02/01/2020 04:27 1.059 02/01/2020 01:43 0.954 02/01/2020 02:38 1.022 02/01/2020 03:33 1.024 02/01/2020 04:28 1.059 02/01/2020 01:44 0.954 02/01/2020 02:39 1.025 02/01/2020 03:34 1.024 02/01/2020 04:29 1.059 02/01/2020 01:45 0.954 02/01/2020 02:40 1.027 02/01/2020 03:35 1.024 02/01/2020 04:30 1.059 02/01/2020 01:46 0.954 02/01/2020 02:41 1.027 02/01/2020 03:36 1.024 02/01/2020 04:31 1.059 02/01/2020 01:47 0.954 02/01/2020 02:42 1.027 02/01/2020 03:37 1.025 02/01/2020 04:32 1.059 02/01/2020 01:48 0.954 02/01/2020 02:43 1.027 02/01/2020 03:38 1.025 02/01/2020 04:33 1.059 02/01/2020 01:49 0.954 02/01/2020 02:44 1.027 02/01/2020 03:39 1.025 02/01/2020 04:34 1.070 02/01/2020 01:50 0.954 02/01/2020 02:45 1.027 02/01/2020 03:40 1.025 02/01/2020 04:35 1.087 02/01/2020 01:51 0.954 02/01/2020 02:46 1.027 02/01/2020 03:41 1.025 02/01/2020 04:36 1.087 02/01/2020 01:52 0.954 02/01/2020 02:47 1.027 02/01/2020 03:42 1.025 02/01/2020 04:37 1.087 02/01/2020 01:53 0.954 02/01/2020 02:48 1.027 02/01/2020 03:43 1.025 02/01/2020 04:38 1.087 02/01/2020 01:54 0.954 02/01/2020 02:49 1.027 02/01/2020 03:44 1.025 02/01/2020 04:39 1.087 02/01/2020 01:55 0.954 02/01/2020 02:50 1.027 02/01/2020 03:45 1.025 02/01/2020 04:40 1.087 02/01/2020 01:56 0.982 02/01/2020 02:51 1.027 02/01/2020 03:46 1.025 02/01/2020 04:41 1.087 02/01/2020 01:57 0.989 02/01/2020 02:52 1.027 02/01/2020 03:47 1.025 02/01/2020 04:42 1.087 02/01/2020 01:58 0.989 02/01/2020 02:53 1.027 02/01/2020 03:48 1.025 02/01/2020 04:43 1.087 02/01/2020 01:59 0.989 02/01/2020 02:54 1.027 02/01/2020 03:49 1.025 02/01/2020 04:44 1.087 02/01/2020 02:00 0.989 02/01/2020 02:55 1.027 02/01/2020 03:50 1.025 02/01/2020 04:45 1.087 02/01/2020 02:01 0.989 02/01/2020 02:56 1.027 02/01/2020 03:51 1.028 02/01/2020 04:46 1.087 02/01/2020 02:02 0.989 02/01/2020 02:57 1.027 02/01/2020 03:52 1.030 02/01/2020 04:47 1.087 02/01/2020 02:03 0.989 02/01/2020 02:58 1.027 02/01/2020 03:53 1.030 02/01/2020 04:48 1.087 02/01/2020 02:04 0.989 02/01/2020 02:59 1.027 02/01/2020 03:54 1.030 02/01/2020 04:49 1.124 02/01/2020 02:05 0.989 02/01/2020 03:00 1.027 02/01/2020 03:55 1.030 02/01/2020 04:50 1.124 02/01/2020 02:06 0.989 02/01/2020 03:01 1.027 02/01/2020 03:56 1.030 02/01/2020 04:51 1.124 02/01/2020 02:07 0.989 02/01/2020 03:02 1.027 02/01/2020 03:57 1.030 02/01/2020 04:52 1.124 02/01/2020 02:08 0.989 02/01/2020 03:03 1.027 02/01/2020 03:58 1.030 02/01/2020 04:53 1.124 02/01/2020 02:09 0.989 02/01/2020 03:04 1.027 02/01/2020 03:59 1.030 02/01/2020 04:54 1.124 02/01/2020 02:10 0.997 02/01/2020 03:05 1.027 02/01/2020 04:00 1.030 02/01/2020 04:55 1.124 02/01/2020 02:11 1.010 02/01/2020 03:06 1.027 02/01/2020 04:01 1.030 02/01/2020 04:56 1.124 02/01/2020 02:12 1.010 02/01/2020 03:07 1.027 02/01/2020 04:02 1.030 02/01/2020 04:57 1.124 02/01/2020 02:13 1.010 02/01/2020 03:08 1.025 02/01/2020 04:03 1.030 02/01/2020 04:58 1.124 02/01/2020 02:14 1.010 02/01/2020 03:09 1.025 02/01/2020 04:04 1.030 02/01/2020 04:59 1.124 02/01/2020 02:15 1.010 02/01/2020 03:10 1.025 02/01/2020 04:05 1.032 02/01/2020 05:00 1.124 02/01/2020 02:16 1.010 02/01/2020 03:11 1.025 02/01/2020 04:06 1.041 02/01/2020 05:01 1.124 02/01/2020 02:17 1.010 02/01/2020 03:12 1.025 02/01/2020 04:07 1.041 02/01/2020 05:02 1.124 02/01/2020 02:18 1.010 02/01/2020 03:13 1.025 02/01/2020 04:08 1.041 02/01/2020 05:03 1.153 02/01/2020 02:19 1.010 02/01/2020 03:14 1.025 02/01/2020 04:09 1.041 02/01/2020 05:04 1.173

©1982-2019 Innovyze Plandescil Limited Page 10 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 05:05 1.173 02/01/2020 06:00 1.393 02/01/2020 06:55 1.876 02/01/2020 07:50 2.566 02/01/2020 05:06 1.173 02/01/2020 06:01 1.493 02/01/2020 06:56 1.876 02/01/2020 07:51 2.566 02/01/2020 05:07 1.173 02/01/2020 06:02 1.493 02/01/2020 06:57 1.876 02/01/2020 07:52 2.566 02/01/2020 05:08 1.173 02/01/2020 06:03 1.493 02/01/2020 06:58 1.937 02/01/2020 07:53 2.566 02/01/2020 05:09 1.173 02/01/2020 06:04 1.493 02/01/2020 06:59 2.030 02/01/2020 07:54 2.566 02/01/2020 05:10 1.173 02/01/2020 06:05 1.493 02/01/2020 07:00 2.030 02/01/2020 07:55 2.566 02/01/2020 05:11 1.173 02/01/2020 06:06 1.493 02/01/2020 07:01 2.030 02/01/2020 07:56 2.726 02/01/2020 05:12 1.173 02/01/2020 06:07 1.493 02/01/2020 07:02 2.030 02/01/2020 07:57 2.766 02/01/2020 05:13 1.173 02/01/2020 06:08 1.493 02/01/2020 07:03 2.030 02/01/2020 07:58 2.766 02/01/2020 05:14 1.173 02/01/2020 06:09 1.493 02/01/2020 07:04 2.030 02/01/2020 07:59 2.766 02/01/2020 05:15 1.173 02/01/2020 06:10 1.493 02/01/2020 07:05 2.030 02/01/2020 08:00 2.766 02/01/2020 05:16 1.173 02/01/2020 06:11 1.493 02/01/2020 07:06 2.030 02/01/2020 08:01 2.766 02/01/2020 05:17 1.185 02/01/2020 06:12 1.493 02/01/2020 07:07 2.030 02/01/2020 08:02 2.766 02/01/2020 05:18 1.233 02/01/2020 06:13 1.493 02/01/2020 07:08 2.030 02/01/2020 08:03 2.766 02/01/2020 05:19 1.233 02/01/2020 06:14 1.493 02/01/2020 07:09 2.030 02/01/2020 08:04 2.766 02/01/2020 05:20 1.233 02/01/2020 06:15 1.562 02/01/2020 07:10 2.030 02/01/2020 08:05 2.766 02/01/2020 05:21 1.233 02/01/2020 06:16 1.607 02/01/2020 07:11 2.030 02/01/2020 08:06 2.766 02/01/2020 05:22 1.233 02/01/2020 06:17 1.607 02/01/2020 07:12 2.030 02/01/2020 08:07 2.766 02/01/2020 05:23 1.233 02/01/2020 06:18 1.607 02/01/2020 07:13 2.197 02/01/2020 08:08 2.766 02/01/2020 05:24 1.233 02/01/2020 06:19 1.607 02/01/2020 07:14 2.197 02/01/2020 08:09 2.766 02/01/2020 05:25 1.233 02/01/2020 06:20 1.607 02/01/2020 07:15 2.197 02/01/2020 08:10 2.850 02/01/2020 05:26 1.233 02/01/2020 06:21 1.607 02/01/2020 07:16 2.197 02/01/2020 08:11 2.975 02/01/2020 05:27 1.233 02/01/2020 06:22 1.607 02/01/2020 07:17 2.197 02/01/2020 08:12 2.975 02/01/2020 05:28 1.233 02/01/2020 06:23 1.607 02/01/2020 07:18 2.197 02/01/2020 08:13 2.975 02/01/2020 05:29 1.233 02/01/2020 06:24 1.607 02/01/2020 07:19 2.197 02/01/2020 08:14 2.975 02/01/2020 05:30 1.233 02/01/2020 06:25 1.607 02/01/2020 07:20 2.197 02/01/2020 08:15 2.975 02/01/2020 05:31 1.233 02/01/2020 06:26 1.607 02/01/2020 07:21 2.197 02/01/2020 08:16 2.975 02/01/2020 05:32 1.292 02/01/2020 06:27 1.607 02/01/2020 07:22 2.197 02/01/2020 08:17 2.975 02/01/2020 05:33 1.307 02/01/2020 06:28 1.607 02/01/2020 07:23 2.197 02/01/2020 08:18 2.975 02/01/2020 05:34 1.307 02/01/2020 06:29 1.633 02/01/2020 07:24 2.197 02/01/2020 08:19 2.975 02/01/2020 05:35 1.307 02/01/2020 06:30 1.735 02/01/2020 07:25 2.197 02/01/2020 08:20 2.975 02/01/2020 05:36 1.307 02/01/2020 06:31 1.735 02/01/2020 07:26 2.197 02/01/2020 08:21 2.975 02/01/2020 05:37 1.307 02/01/2020 06:32 1.735 02/01/2020 07:27 2.304 02/01/2020 08:22 2.975 02/01/2020 05:38 1.307 02/01/2020 06:33 1.735 02/01/2020 07:28 2.376 02/01/2020 08:23 2.975 02/01/2020 05:39 1.307 02/01/2020 06:34 1.735 02/01/2020 07:29 2.376 02/01/2020 08:24 2.975 02/01/2020 05:40 1.307 02/01/2020 06:35 1.735 02/01/2020 07:30 2.376 02/01/2020 08:25 3.192 02/01/2020 05:41 1.307 02/01/2020 06:36 1.735 02/01/2020 07:31 2.376 02/01/2020 08:26 3.192 02/01/2020 05:42 1.307 02/01/2020 06:37 1.735 02/01/2020 07:32 2.376 02/01/2020 08:27 3.192 02/01/2020 05:43 1.307 02/01/2020 06:38 1.735 02/01/2020 07:33 2.376 02/01/2020 08:28 3.192 02/01/2020 05:44 1.307 02/01/2020 06:39 1.735 02/01/2020 07:34 2.376 02/01/2020 08:29 3.192 02/01/2020 05:45 1.307 02/01/2020 06:40 1.735 02/01/2020 07:35 2.376 02/01/2020 08:30 3.192 02/01/2020 05:46 1.341 02/01/2020 06:41 1.735 02/01/2020 07:36 2.376 02/01/2020 08:31 3.192 02/01/2020 05:47 1.393 02/01/2020 06:42 1.735 02/01/2020 07:37 2.376 02/01/2020 08:32 3.192 02/01/2020 05:48 1.393 02/01/2020 06:43 1.735 02/01/2020 07:38 2.376 02/01/2020 08:33 3.192 02/01/2020 05:49 1.393 02/01/2020 06:44 1.848 02/01/2020 07:39 2.376 02/01/2020 08:34 3.192 02/01/2020 05:50 1.393 02/01/2020 06:45 1.876 02/01/2020 07:40 2.376 02/01/2020 08:35 3.192 02/01/2020 05:51 1.393 02/01/2020 06:46 1.876 02/01/2020 07:41 2.414 02/01/2020 08:36 3.192 02/01/2020 05:52 1.393 02/01/2020 06:47 1.876 02/01/2020 07:42 2.566 02/01/2020 08:37 3.192 02/01/2020 05:53 1.393 02/01/2020 06:48 1.876 02/01/2020 07:43 2.566 02/01/2020 08:38 3.192 02/01/2020 05:54 1.393 02/01/2020 06:49 1.876 02/01/2020 07:44 2.566 02/01/2020 08:39 3.325 02/01/2020 05:55 1.393 02/01/2020 06:50 1.876 02/01/2020 07:45 2.566 02/01/2020 08:40 3.414 02/01/2020 05:56 1.393 02/01/2020 06:51 1.876 02/01/2020 07:46 2.566 02/01/2020 08:41 3.414 02/01/2020 05:57 1.393 02/01/2020 06:52 1.876 02/01/2020 07:47 2.566 02/01/2020 08:42 3.414 02/01/2020 05:58 1.393 02/01/2020 06:53 1.876 02/01/2020 07:48 2.566 02/01/2020 08:43 3.414 02/01/2020 05:59 1.393 02/01/2020 06:54 1.876 02/01/2020 07:49 2.566 02/01/2020 08:44 3.414

©1982-2019 Innovyze Plandescil Limited Page 11 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 08:45 3.414 02/01/2020 09:40 4.326 02/01/2020 10:35 5.164 02/01/2020 11:30 5.636 02/01/2020 08:46 3.414 02/01/2020 09:41 4.326 02/01/2020 10:36 5.164 02/01/2020 11:31 5.636 02/01/2020 08:47 3.414 02/01/2020 09:42 4.326 02/01/2020 10:37 5.164 02/01/2020 11:32 5.724 02/01/2020 08:48 3.414 02/01/2020 09:43 4.326 02/01/2020 10:38 5.164 02/01/2020 11:33 5.746 02/01/2020 08:49 3.414 02/01/2020 09:44 4.326 02/01/2020 10:39 5.164 02/01/2020 11:34 5.746 02/01/2020 08:50 3.414 02/01/2020 09:45 4.326 02/01/2020 10:40 5.164 02/01/2020 11:35 5.746 02/01/2020 08:51 3.414 02/01/2020 09:46 4.326 02/01/2020 10:41 5.164 02/01/2020 11:36 5.746 02/01/2020 08:52 3.414 02/01/2020 09:47 4.326 02/01/2020 10:42 5.164 02/01/2020 11:37 5.746 02/01/2020 08:53 3.459 02/01/2020 09:48 4.326 02/01/2020 10:43 5.164 02/01/2020 11:38 5.746 02/01/2020 08:54 3.641 02/01/2020 09:49 4.326 02/01/2020 10:44 5.164 02/01/2020 11:39 5.746 02/01/2020 08:55 3.641 02/01/2020 09:50 4.326 02/01/2020 10:45 5.164 02/01/2020 11:40 5.746 02/01/2020 08:56 3.641 02/01/2020 09:51 4.460 02/01/2020 10:46 5.164 02/01/2020 11:41 5.746 02/01/2020 08:57 3.641 02/01/2020 09:52 4.549 02/01/2020 10:47 5.164 02/01/2020 11:42 5.746 02/01/2020 08:58 3.641 02/01/2020 09:53 4.549 02/01/2020 10:48 5.164 02/01/2020 11:43 5.746 02/01/2020 08:59 3.641 02/01/2020 09:54 4.549 02/01/2020 10:49 5.342 02/01/2020 11:44 5.746 02/01/2020 09:00 3.641 02/01/2020 09:55 4.549 02/01/2020 10:50 5.342 02/01/2020 11:45 5.746 02/01/2020 09:01 3.641 02/01/2020 09:56 4.549 02/01/2020 10:51 5.342 02/01/2020 11:46 5.778 02/01/2020 09:02 3.641 02/01/2020 09:57 4.549 02/01/2020 10:52 5.342 02/01/2020 11:47 5.825 02/01/2020 09:03 3.641 02/01/2020 09:58 4.549 02/01/2020 10:53 5.342 02/01/2020 11:48 5.825 02/01/2020 09:04 3.641 02/01/2020 09:59 4.549 02/01/2020 10:54 5.342 02/01/2020 11:49 5.825 02/01/2020 09:05 3.641 02/01/2020 10:00 4.549 02/01/2020 10:55 5.342 02/01/2020 11:50 5.825 02/01/2020 09:06 3.641 02/01/2020 10:01 4.549 02/01/2020 10:56 5.342 02/01/2020 11:51 5.825 02/01/2020 09:07 3.641 02/01/2020 10:02 4.549 02/01/2020 10:57 5.342 02/01/2020 11:52 5.825 02/01/2020 09:08 3.824 02/01/2020 10:03 4.549 02/01/2020 10:58 5.342 02/01/2020 11:53 5.825 02/01/2020 09:09 3.870 02/01/2020 10:04 4.549 02/01/2020 10:59 5.342 02/01/2020 11:54 5.825 02/01/2020 09:10 3.870 02/01/2020 10:05 4.592 02/01/2020 11:00 5.342 02/01/2020 11:55 5.825 02/01/2020 09:11 3.870 02/01/2020 10:06 4.765 02/01/2020 11:01 5.342 02/01/2020 11:56 5.825 02/01/2020 09:12 3.870 02/01/2020 10:07 4.765 02/01/2020 11:02 5.342 02/01/2020 11:57 5.825 02/01/2020 09:13 3.870 02/01/2020 10:08 4.765 02/01/2020 11:03 5.437 02/01/2020 11:58 5.825 02/01/2020 09:14 3.870 02/01/2020 10:09 4.765 02/01/2020 11:04 5.500 02/01/2020 11:59 5.825 02/01/2020 09:15 3.870 02/01/2020 10:10 4.765 02/01/2020 11:05 5.500 02/01/2020 12:00 5.825 02/01/2020 09:16 3.870 02/01/2020 10:11 4.765 02/01/2020 11:06 5.500 02/01/2020 12:01 5.825 02/01/2020 09:17 3.870 02/01/2020 10:12 4.765 02/01/2020 11:07 5.500 02/01/2020 12:02 5.825 02/01/2020 09:18 3.870 02/01/2020 10:13 4.765 02/01/2020 11:08 5.500 02/01/2020 12:03 5.825 02/01/2020 09:19 3.870 02/01/2020 10:14 4.765 02/01/2020 11:09 5.500 02/01/2020 12:04 5.825 02/01/2020 09:20 3.870 02/01/2020 10:15 4.765 02/01/2020 11:10 5.500 02/01/2020 12:05 5.825 02/01/2020 09:21 3.870 02/01/2020 10:16 4.765 02/01/2020 11:11 5.500 02/01/2020 12:06 5.825 02/01/2020 09:22 3.961 02/01/2020 10:17 4.765 02/01/2020 11:12 5.500 02/01/2020 12:07 5.825 02/01/2020 09:23 4.099 02/01/2020 10:18 4.765 02/01/2020 11:13 5.500 02/01/2020 12:08 5.825 02/01/2020 09:24 4.099 02/01/2020 10:19 4.765 02/01/2020 11:14 5.500 02/01/2020 12:09 5.825 02/01/2020 09:25 4.099 02/01/2020 10:20 4.930 02/01/2020 11:15 5.500 02/01/2020 12:10 5.825 02/01/2020 09:26 4.099 02/01/2020 10:21 4.971 02/01/2020 11:16 5.500 02/01/2020 12:11 5.825 02/01/2020 09:27 4.099 02/01/2020 10:22 4.971 02/01/2020 11:17 5.527 02/01/2020 12:12 5.825 02/01/2020 09:28 4.099 02/01/2020 10:23 4.971 02/01/2020 11:18 5.636 02/01/2020 12:13 5.825 02/01/2020 09:29 4.099 02/01/2020 10:24 4.971 02/01/2020 11:19 5.636 02/01/2020 12:14 5.825 02/01/2020 09:30 4.099 02/01/2020 10:25 4.971 02/01/2020 11:20 5.636 02/01/2020 12:15 5.778 02/01/2020 09:31 4.099 02/01/2020 10:26 4.971 02/01/2020 11:21 5.636 02/01/2020 12:16 5.746 02/01/2020 09:32 4.099 02/01/2020 10:27 4.971 02/01/2020 11:22 5.636 02/01/2020 12:17 5.746 02/01/2020 09:33 4.099 02/01/2020 10:28 4.971 02/01/2020 11:23 5.636 02/01/2020 12:18 5.746 02/01/2020 09:34 4.099 02/01/2020 10:29 4.971 02/01/2020 11:24 5.636 02/01/2020 12:19 5.746 02/01/2020 09:35 4.099 02/01/2020 10:30 4.971 02/01/2020 11:25 5.636 02/01/2020 12:20 5.746 02/01/2020 09:36 4.099 02/01/2020 10:31 4.971 02/01/2020 11:26 5.636 02/01/2020 12:21 5.746 02/01/2020 09:37 4.326 02/01/2020 10:32 4.971 02/01/2020 11:27 5.636 02/01/2020 12:22 5.746 02/01/2020 09:38 4.326 02/01/2020 10:33 4.971 02/01/2020 11:28 5.636 02/01/2020 12:23 5.746 02/01/2020 09:39 4.326 02/01/2020 10:34 5.048 02/01/2020 11:29 5.636 02/01/2020 12:24 5.746

©1982-2019 Innovyze Plandescil Limited Page 12 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 12:25 5.746 02/01/2020 13:20 5.164 02/01/2020 14:15 4.326 02/01/2020 15:10 3.414 02/01/2020 12:26 5.746 02/01/2020 13:21 5.164 02/01/2020 14:16 4.326 02/01/2020 15:11 3.414 02/01/2020 12:27 5.746 02/01/2020 13:22 5.164 02/01/2020 14:17 4.326 02/01/2020 15:12 3.414 02/01/2020 12:28 5.746 02/01/2020 13:23 5.164 02/01/2020 14:18 4.326 02/01/2020 15:13 3.414 02/01/2020 12:29 5.724 02/01/2020 13:24 5.164 02/01/2020 14:19 4.326 02/01/2020 15:14 3.414 02/01/2020 12:30 5.636 02/01/2020 13:25 5.164 02/01/2020 14:20 4.326 02/01/2020 15:15 3.414 02/01/2020 12:31 5.636 02/01/2020 13:26 5.164 02/01/2020 14:21 4.326 02/01/2020 15:16 3.414 02/01/2020 12:32 5.636 02/01/2020 13:27 5.048 02/01/2020 14:22 4.326 02/01/2020 15:17 3.414 02/01/2020 12:33 5.636 02/01/2020 13:28 4.971 02/01/2020 14:23 4.326 02/01/2020 15:18 3.414 02/01/2020 12:34 5.636 02/01/2020 13:29 4.971 02/01/2020 14:24 4.326 02/01/2020 15:19 3.414 02/01/2020 12:35 5.636 02/01/2020 13:30 4.971 02/01/2020 14:25 4.099 02/01/2020 15:20 3.414 02/01/2020 12:36 5.636 02/01/2020 13:31 4.971 02/01/2020 14:26 4.099 02/01/2020 15:21 3.414 02/01/2020 12:37 5.636 02/01/2020 13:32 4.971 02/01/2020 14:27 4.099 02/01/2020 15:22 3.325 02/01/2020 12:38 5.636 02/01/2020 13:33 4.971 02/01/2020 14:28 4.099 02/01/2020 15:23 3.192 02/01/2020 12:39 5.636 02/01/2020 13:34 4.971 02/01/2020 14:29 4.099 02/01/2020 15:24 3.192 02/01/2020 12:40 5.636 02/01/2020 13:35 4.971 02/01/2020 14:30 4.099 02/01/2020 15:25 3.192 02/01/2020 12:41 5.636 02/01/2020 13:36 4.971 02/01/2020 14:31 4.099 02/01/2020 15:26 3.192 02/01/2020 12:42 5.636 02/01/2020 13:37 4.971 02/01/2020 14:32 4.099 02/01/2020 15:27 3.192 02/01/2020 12:43 5.636 02/01/2020 13:38 4.971 02/01/2020 14:33 4.099 02/01/2020 15:28 3.192 02/01/2020 12:44 5.527 02/01/2020 13:39 4.971 02/01/2020 14:34 4.099 02/01/2020 15:29 3.192 02/01/2020 12:45 5.500 02/01/2020 13:40 4.971 02/01/2020 14:35 4.099 02/01/2020 15:30 3.192 02/01/2020 12:46 5.500 02/01/2020 13:41 4.930 02/01/2020 14:36 4.099 02/01/2020 15:31 3.192 02/01/2020 12:47 5.500 02/01/2020 13:42 4.765 02/01/2020 14:37 4.099 02/01/2020 15:32 3.192 02/01/2020 12:48 5.500 02/01/2020 13:43 4.765 02/01/2020 14:38 4.099 02/01/2020 15:33 3.192 02/01/2020 12:49 5.500 02/01/2020 13:44 4.765 02/01/2020 14:39 3.961 02/01/2020 15:34 3.192 02/01/2020 12:50 5.500 02/01/2020 13:45 4.765 02/01/2020 14:40 3.870 02/01/2020 15:35 3.192 02/01/2020 12:51 5.500 02/01/2020 13:46 4.765 02/01/2020 14:41 3.870 02/01/2020 15:36 3.192 02/01/2020 12:52 5.500 02/01/2020 13:47 4.765 02/01/2020 14:42 3.870 02/01/2020 15:37 2.975 02/01/2020 12:53 5.500 02/01/2020 13:48 4.765 02/01/2020 14:43 3.870 02/01/2020 15:38 2.975 02/01/2020 12:54 5.500 02/01/2020 13:49 4.765 02/01/2020 14:44 3.870 02/01/2020 15:39 2.975 02/01/2020 12:55 5.500 02/01/2020 13:50 4.765 02/01/2020 14:45 3.870 02/01/2020 15:40 2.975 02/01/2020 12:56 5.500 02/01/2020 13:51 4.765 02/01/2020 14:46 3.870 02/01/2020 15:41 2.975 02/01/2020 12:57 5.500 02/01/2020 13:52 4.765 02/01/2020 14:47 3.870 02/01/2020 15:42 2.975 02/01/2020 12:58 5.437 02/01/2020 13:53 4.765 02/01/2020 14:48 3.870 02/01/2020 15:43 2.975 02/01/2020 12:59 5.342 02/01/2020 13:54 4.765 02/01/2020 14:49 3.870 02/01/2020 15:44 2.975 02/01/2020 13:00 5.342 02/01/2020 13:55 4.765 02/01/2020 14:50 3.870 02/01/2020 15:45 2.975 02/01/2020 13:01 5.342 02/01/2020 13:56 4.592 02/01/2020 14:51 3.870 02/01/2020 15:46 2.975 02/01/2020 13:02 5.342 02/01/2020 13:57 4.549 02/01/2020 14:52 3.870 02/01/2020 15:47 2.975 02/01/2020 13:03 5.342 02/01/2020 13:58 4.549 02/01/2020 14:53 3.824 02/01/2020 15:48 2.975 02/01/2020 13:04 5.342 02/01/2020 13:59 4.549 02/01/2020 14:54 3.641 02/01/2020 15:49 2.975 02/01/2020 13:05 5.342 02/01/2020 14:00 4.549 02/01/2020 14:55 3.641 02/01/2020 15:50 2.975 02/01/2020 13:06 5.342 02/01/2020 14:01 4.549 02/01/2020 14:56 3.641 02/01/2020 15:51 2.850 02/01/2020 13:07 5.342 02/01/2020 14:02 4.549 02/01/2020 14:57 3.641 02/01/2020 15:52 2.766 02/01/2020 13:08 5.342 02/01/2020 14:03 4.549 02/01/2020 14:58 3.641 02/01/2020 15:53 2.766 02/01/2020 13:09 5.342 02/01/2020 14:04 4.549 02/01/2020 14:59 3.641 02/01/2020 15:54 2.766 02/01/2020 13:10 5.342 02/01/2020 14:05 4.549 02/01/2020 15:00 3.641 02/01/2020 15:55 2.766 02/01/2020 13:11 5.342 02/01/2020 14:06 4.549 02/01/2020 15:01 3.641 02/01/2020 15:56 2.766 02/01/2020 13:12 5.342 02/01/2020 14:07 4.549 02/01/2020 15:02 3.641 02/01/2020 15:57 2.766 02/01/2020 13:13 5.164 02/01/2020 14:08 4.549 02/01/2020 15:03 3.641 02/01/2020 15:58 2.766 02/01/2020 13:14 5.164 02/01/2020 14:09 4.549 02/01/2020 15:04 3.641 02/01/2020 15:59 2.766 02/01/2020 13:15 5.164 02/01/2020 14:10 4.460 02/01/2020 15:05 3.641 02/01/2020 16:00 2.766 02/01/2020 13:16 5.164 02/01/2020 14:11 4.326 02/01/2020 15:06 3.641 02/01/2020 16:01 2.766 02/01/2020 13:17 5.164 02/01/2020 14:12 4.326 02/01/2020 15:07 3.641 02/01/2020 16:02 2.766 02/01/2020 13:18 5.164 02/01/2020 14:13 4.326 02/01/2020 15:08 3.459 02/01/2020 16:03 2.766 02/01/2020 13:19 5.164 02/01/2020 14:14 4.326 02/01/2020 15:09 3.414 02/01/2020 16:04 2.766

©1982-2019 Innovyze Plandescil Limited Page 13 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 16:05 2.726 02/01/2020 17:00 2.030 02/01/2020 17:55 1.493 02/01/2020 18:50 1.173 02/01/2020 16:06 2.566 02/01/2020 17:01 2.030 02/01/2020 17:56 1.493 02/01/2020 18:51 1.173 02/01/2020 16:07 2.566 02/01/2020 17:02 2.030 02/01/2020 17:57 1.493 02/01/2020 18:52 1.173 02/01/2020 16:08 2.566 02/01/2020 17:03 1.937 02/01/2020 17:58 1.493 02/01/2020 18:53 1.173 02/01/2020 16:09 2.566 02/01/2020 17:04 1.876 02/01/2020 17:59 1.493 02/01/2020 18:54 1.173 02/01/2020 16:10 2.566 02/01/2020 17:05 1.876 02/01/2020 18:00 1.493 02/01/2020 18:55 1.173 02/01/2020 16:11 2.566 02/01/2020 17:06 1.876 02/01/2020 18:01 1.393 02/01/2020 18:56 1.173 02/01/2020 16:12 2.566 02/01/2020 17:07 1.876 02/01/2020 18:02 1.393 02/01/2020 18:57 1.173 02/01/2020 16:13 2.566 02/01/2020 17:08 1.876 02/01/2020 18:03 1.393 02/01/2020 18:58 1.153 02/01/2020 16:14 2.566 02/01/2020 17:09 1.876 02/01/2020 18:04 1.393 02/01/2020 18:59 1.124 02/01/2020 16:15 2.566 02/01/2020 17:10 1.876 02/01/2020 18:05 1.393 02/01/2020 19:00 1.124 02/01/2020 16:16 2.566 02/01/2020 17:11 1.876 02/01/2020 18:06 1.393 02/01/2020 19:01 1.124 02/01/2020 16:17 2.566 02/01/2020 17:12 1.876 02/01/2020 18:07 1.393 02/01/2020 19:02 1.124 02/01/2020 16:18 2.566 02/01/2020 17:13 1.876 02/01/2020 18:08 1.393 02/01/2020 19:03 1.124 02/01/2020 16:19 2.566 02/01/2020 17:14 1.876 02/01/2020 18:09 1.393 02/01/2020 19:04 1.124 02/01/2020 16:20 2.414 02/01/2020 17:15 1.876 02/01/2020 18:10 1.393 02/01/2020 19:05 1.124 02/01/2020 16:21 2.376 02/01/2020 17:16 1.876 02/01/2020 18:11 1.393 02/01/2020 19:06 1.124 02/01/2020 16:22 2.376 02/01/2020 17:17 1.848 02/01/2020 18:12 1.393 02/01/2020 19:07 1.124 02/01/2020 16:23 2.376 02/01/2020 17:18 1.735 02/01/2020 18:13 1.393 02/01/2020 19:08 1.124 02/01/2020 16:24 2.376 02/01/2020 17:19 1.735 02/01/2020 18:14 1.393 02/01/2020 19:09 1.124 02/01/2020 16:25 2.376 02/01/2020 17:20 1.735 02/01/2020 18:15 1.341 02/01/2020 19:10 1.124 02/01/2020 16:26 2.376 02/01/2020 17:21 1.735 02/01/2020 18:16 1.307 02/01/2020 19:11 1.124 02/01/2020 16:27 2.376 02/01/2020 17:22 1.735 02/01/2020 18:17 1.307 02/01/2020 19:12 1.124 02/01/2020 16:28 2.376 02/01/2020 17:23 1.735 02/01/2020 18:18 1.307 02/01/2020 19:13 1.087 02/01/2020 16:29 2.376 02/01/2020 17:24 1.735 02/01/2020 18:19 1.307 02/01/2020 19:14 1.087 02/01/2020 16:30 2.376 02/01/2020 17:25 1.735 02/01/2020 18:20 1.307 02/01/2020 19:15 1.087 02/01/2020 16:31 2.376 02/01/2020 17:26 1.735 02/01/2020 18:21 1.307 02/01/2020 19:16 1.087 02/01/2020 16:32 2.376 02/01/2020 17:27 1.735 02/01/2020 18:22 1.307 02/01/2020 19:17 1.087 02/01/2020 16:33 2.376 02/01/2020 17:28 1.735 02/01/2020 18:23 1.307 02/01/2020 19:18 1.087 02/01/2020 16:34 2.304 02/01/2020 17:29 1.735 02/01/2020 18:24 1.307 02/01/2020 19:19 1.087 02/01/2020 16:35 2.197 02/01/2020 17:30 1.735 02/01/2020 18:25 1.307 02/01/2020 19:20 1.087 02/01/2020 16:36 2.197 02/01/2020 17:31 1.735 02/01/2020 18:26 1.307 02/01/2020 19:21 1.087 02/01/2020 16:37 2.197 02/01/2020 17:32 1.633 02/01/2020 18:27 1.307 02/01/2020 19:22 1.087 02/01/2020 16:38 2.197 02/01/2020 17:33 1.607 02/01/2020 18:28 1.307 02/01/2020 19:23 1.087 02/01/2020 16:39 2.197 02/01/2020 17:34 1.607 02/01/2020 18:29 1.292 02/01/2020 19:24 1.087 02/01/2020 16:40 2.197 02/01/2020 17:35 1.607 02/01/2020 18:30 1.233 02/01/2020 19:25 1.087 02/01/2020 16:41 2.197 02/01/2020 17:36 1.607 02/01/2020 18:31 1.233 02/01/2020 19:26 1.087 02/01/2020 16:42 2.197 02/01/2020 17:37 1.607 02/01/2020 18:32 1.233 02/01/2020 19:27 1.070 02/01/2020 16:43 2.197 02/01/2020 17:38 1.607 02/01/2020 18:33 1.233 02/01/2020 19:28 1.059 02/01/2020 16:44 2.197 02/01/2020 17:39 1.607 02/01/2020 18:34 1.233 02/01/2020 19:29 1.059 02/01/2020 16:45 2.197 02/01/2020 17:40 1.607 02/01/2020 18:35 1.233 02/01/2020 19:30 1.059 02/01/2020 16:46 2.197 02/01/2020 17:41 1.607 02/01/2020 18:36 1.233 02/01/2020 19:31 1.059 02/01/2020 16:47 2.197 02/01/2020 17:42 1.607 02/01/2020 18:37 1.233 02/01/2020 19:32 1.059 02/01/2020 16:48 2.197 02/01/2020 17:43 1.607 02/01/2020 18:38 1.233 02/01/2020 19:33 1.059 02/01/2020 16:49 2.030 02/01/2020 17:44 1.607 02/01/2020 18:39 1.233 02/01/2020 19:34 1.059 02/01/2020 16:50 2.030 02/01/2020 17:45 1.607 02/01/2020 18:40 1.233 02/01/2020 19:35 1.059 02/01/2020 16:51 2.030 02/01/2020 17:46 1.562 02/01/2020 18:41 1.233 02/01/2020 19:36 1.059 02/01/2020 16:52 2.030 02/01/2020 17:47 1.493 02/01/2020 18:42 1.233 02/01/2020 19:37 1.059 02/01/2020 16:53 2.030 02/01/2020 17:48 1.493 02/01/2020 18:43 1.233 02/01/2020 19:38 1.059 02/01/2020 16:54 2.030 02/01/2020 17:49 1.493 02/01/2020 18:44 1.185 02/01/2020 19:39 1.059 02/01/2020 16:55 2.030 02/01/2020 17:50 1.493 02/01/2020 18:45 1.173 02/01/2020 19:40 1.059 02/01/2020 16:56 2.030 02/01/2020 17:51 1.493 02/01/2020 18:46 1.173 02/01/2020 19:41 1.056 02/01/2020 16:57 2.030 02/01/2020 17:52 1.493 02/01/2020 18:47 1.173 02/01/2020 19:42 1.041 02/01/2020 16:58 2.030 02/01/2020 17:53 1.493 02/01/2020 18:48 1.173 02/01/2020 19:43 1.041 02/01/2020 16:59 2.030 02/01/2020 17:54 1.493 02/01/2020 18:49 1.173 02/01/2020 19:44 1.041

©1982-2019 Innovyze Plandescil Limited Page 14 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 19:45 1.041 02/01/2020 20:40 1.025 02/01/2020 21:35 1.022 02/01/2020 22:30 0.904 02/01/2020 19:46 1.041 02/01/2020 20:41 1.025 02/01/2020 21:36 1.022 02/01/2020 22:31 0.904 02/01/2020 19:47 1.041 02/01/2020 20:42 1.025 02/01/2020 21:37 1.010 02/01/2020 22:32 0.904 02/01/2020 19:48 1.041 02/01/2020 20:43 1.025 02/01/2020 21:38 1.010 02/01/2020 22:33 0.904 02/01/2020 19:49 1.041 02/01/2020 20:44 1.025 02/01/2020 21:39 1.010 02/01/2020 22:34 0.877 02/01/2020 19:50 1.041 02/01/2020 20:45 1.025 02/01/2020 21:40 1.010 02/01/2020 22:35 0.835 02/01/2020 19:51 1.041 02/01/2020 20:46 1.025 02/01/2020 21:41 1.010 02/01/2020 22:36 0.835 02/01/2020 19:52 1.041 02/01/2020 20:47 1.025 02/01/2020 21:42 1.010 02/01/2020 22:37 0.835 02/01/2020 19:53 1.041 02/01/2020 20:48 1.025 02/01/2020 21:43 1.010 02/01/2020 22:38 0.835 02/01/2020 19:54 1.041 02/01/2020 20:49 1.025 02/01/2020 21:44 1.010 02/01/2020 22:39 0.835 02/01/2020 19:55 1.041 02/01/2020 20:50 1.025 02/01/2020 21:45 1.010 02/01/2020 22:40 0.835 02/01/2020 19:56 1.032 02/01/2020 20:51 1.025 02/01/2020 21:46 1.010 02/01/2020 22:41 0.835 02/01/2020 19:57 1.030 02/01/2020 20:52 1.025 02/01/2020 21:47 1.010 02/01/2020 22:42 0.835 02/01/2020 19:58 1.030 02/01/2020 20:53 1.025 02/01/2020 21:48 1.010 02/01/2020 22:43 0.835 02/01/2020 19:59 1.030 02/01/2020 20:54 1.027 02/01/2020 21:49 1.010 02/01/2020 22:44 0.835 02/01/2020 20:00 1.030 02/01/2020 20:55 1.027 02/01/2020 21:50 1.010 02/01/2020 22:45 0.835 02/01/2020 20:01 1.030 02/01/2020 20:56 1.027 02/01/2020 21:51 0.997 02/01/2020 22:46 0.835 02/01/2020 20:02 1.030 02/01/2020 20:57 1.027 02/01/2020 21:52 0.989 02/01/2020 22:47 0.835 02/01/2020 20:03 1.030 02/01/2020 20:58 1.027 02/01/2020 21:53 0.989 02/01/2020 22:48 0.835 02/01/2020 20:04 1.030 02/01/2020 20:59 1.027 02/01/2020 21:54 0.989 02/01/2020 22:49 0.743 02/01/2020 20:05 1.030 02/01/2020 21:00 1.027 02/01/2020 21:55 0.989 02/01/2020 22:50 0.743 02/01/2020 20:06 1.030 02/01/2020 21:01 1.027 02/01/2020 21:56 0.989 02/01/2020 22:51 0.743 02/01/2020 20:07 1.030 02/01/2020 21:02 1.027 02/01/2020 21:57 0.989 02/01/2020 22:52 0.743 02/01/2020 20:08 1.030 02/01/2020 21:03 1.027 02/01/2020 21:58 0.989 02/01/2020 22:53 0.743 02/01/2020 20:09 1.030 02/01/2020 21:04 1.027 02/01/2020 21:59 0.989 02/01/2020 22:54 0.743 02/01/2020 20:10 1.028 02/01/2020 21:05 1.027 02/01/2020 22:00 0.989 02/01/2020 22:55 0.743 02/01/2020 20:11 1.025 02/01/2020 21:06 1.027 02/01/2020 22:01 0.989 02/01/2020 22:56 0.743 02/01/2020 20:12 1.025 02/01/2020 21:07 1.027 02/01/2020 22:02 0.989 02/01/2020 22:57 0.743 02/01/2020 20:13 1.025 02/01/2020 21:08 1.027 02/01/2020 22:03 0.989 02/01/2020 22:58 0.743 02/01/2020 20:14 1.025 02/01/2020 21:09 1.027 02/01/2020 22:04 0.989 02/01/2020 22:59 0.743 02/01/2020 20:15 1.025 02/01/2020 21:10 1.027 02/01/2020 22:05 0.982 02/01/2020 23:00 0.743 02/01/2020 20:16 1.025 02/01/2020 21:11 1.027 02/01/2020 22:06 0.954 02/01/2020 23:01 0.743 02/01/2020 20:17 1.025 02/01/2020 21:12 1.027 02/01/2020 22:07 0.954 02/01/2020 23:02 0.743 02/01/2020 20:18 1.025 02/01/2020 21:13 1.027 02/01/2020 22:08 0.954 02/01/2020 23:03 0.673 02/01/2020 20:19 1.025 02/01/2020 21:14 1.027 02/01/2020 22:09 0.954 02/01/2020 23:04 0.625 02/01/2020 20:20 1.025 02/01/2020 21:15 1.027 02/01/2020 22:10 0.954 02/01/2020 23:05 0.625 02/01/2020 20:21 1.025 02/01/2020 21:16 1.027 02/01/2020 22:11 0.954 02/01/2020 23:06 0.625 02/01/2020 20:22 1.025 02/01/2020 21:17 1.027 02/01/2020 22:12 0.954 02/01/2020 23:07 0.625 02/01/2020 20:23 1.025 02/01/2020 21:18 1.027 02/01/2020 22:13 0.954 02/01/2020 23:08 0.625 02/01/2020 20:24 1.025 02/01/2020 21:19 1.027 02/01/2020 22:14 0.954 02/01/2020 23:09 0.625 02/01/2020 20:25 1.024 02/01/2020 21:20 1.027 02/01/2020 22:15 0.954 02/01/2020 23:10 0.625 02/01/2020 20:26 1.024 02/01/2020 21:21 1.027 02/01/2020 22:16 0.954 02/01/2020 23:11 0.625 02/01/2020 20:27 1.024 02/01/2020 21:22 1.025 02/01/2020 22:17 0.954 02/01/2020 23:12 0.625 02/01/2020 20:28 1.024 02/01/2020 21:23 1.022 02/01/2020 22:18 0.954 02/01/2020 23:13 0.625 02/01/2020 20:29 1.024 02/01/2020 21:24 1.022 02/01/2020 22:19 0.954 02/01/2020 23:14 0.625 02/01/2020 20:30 1.024 02/01/2020 21:25 1.022 02/01/2020 22:20 0.914 02/01/2020 23:15 0.625 02/01/2020 20:31 1.024 02/01/2020 21:26 1.022 02/01/2020 22:21 0.904 02/01/2020 23:16 0.625 02/01/2020 20:32 1.024 02/01/2020 21:27 1.022 02/01/2020 22:22 0.904 02/01/2020 23:17 0.596 02/01/2020 20:33 1.024 02/01/2020 21:28 1.022 02/01/2020 22:23 0.904 02/01/2020 23:18 0.478 02/01/2020 20:34 1.024 02/01/2020 21:29 1.022 02/01/2020 22:24 0.904 02/01/2020 23:19 0.478 02/01/2020 20:35 1.024 02/01/2020 21:30 1.022 02/01/2020 22:25 0.904 02/01/2020 23:20 0.478 02/01/2020 20:36 1.024 02/01/2020 21:31 1.022 02/01/2020 22:26 0.904 02/01/2020 23:21 0.478 02/01/2020 20:37 1.024 02/01/2020 21:32 1.022 02/01/2020 22:27 0.904 02/01/2020 23:22 0.478 02/01/2020 20:38 1.024 02/01/2020 21:33 1.022 02/01/2020 22:28 0.904 02/01/2020 23:23 0.478 02/01/2020 20:39 1.025 02/01/2020 21:34 1.022 02/01/2020 22:29 0.904 02/01/2020 23:24 0.478

©1982-2019 Innovyze Plandescil Limited Page 15 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

02/01/2020 23:25 0.478 03/01/2020 00:20 0.000 03/01/2020 01:15 0.000 03/01/2020 02:10 0.000 02/01/2020 23:26 0.478 03/01/2020 00:21 0.000 03/01/2020 01:16 0.000 03/01/2020 02:11 0.000 02/01/2020 23:27 0.478 03/01/2020 00:22 0.000 03/01/2020 01:17 0.000 03/01/2020 02:12 0.000 02/01/2020 23:28 0.478 03/01/2020 00:23 0.000 03/01/2020 01:18 0.000 03/01/2020 02:13 0.000 02/01/2020 23:29 0.478 03/01/2020 00:24 0.000 03/01/2020 01:19 0.000 03/01/2020 02:14 0.000 02/01/2020 23:30 0.478 03/01/2020 00:25 0.000 03/01/2020 01:20 0.000 03/01/2020 02:15 0.000 02/01/2020 23:31 0.478 03/01/2020 00:26 0.000 03/01/2020 01:21 0.000 03/01/2020 02:16 0.000 02/01/2020 23:32 0.332 03/01/2020 00:27 0.000 03/01/2020 01:22 0.000 03/01/2020 02:17 0.000 02/01/2020 23:33 0.296 03/01/2020 00:28 0.000 03/01/2020 01:23 0.000 03/01/2020 02:18 0.000 02/01/2020 23:34 0.296 03/01/2020 00:29 0.000 03/01/2020 01:24 0.000 03/01/2020 02:19 0.000 02/01/2020 23:35 0.296 03/01/2020 00:30 0.000 03/01/2020 01:25 0.000 03/01/2020 02:20 0.000 02/01/2020 23:36 0.296 03/01/2020 00:31 0.000 03/01/2020 01:26 0.000 03/01/2020 02:21 0.000 02/01/2020 23:37 0.296 03/01/2020 00:32 0.000 03/01/2020 01:27 0.000 03/01/2020 02:22 0.000 02/01/2020 23:38 0.296 03/01/2020 00:33 0.000 03/01/2020 01:28 0.000 03/01/2020 02:23 0.000 02/01/2020 23:39 0.296 03/01/2020 00:34 0.000 03/01/2020 01:29 0.000 03/01/2020 02:24 0.000 02/01/2020 23:40 0.296 03/01/2020 00:35 0.000 03/01/2020 01:30 0.000 03/01/2020 02:25 0.000 02/01/2020 23:41 0.296 03/01/2020 00:36 0.000 03/01/2020 01:31 0.000 03/01/2020 02:26 0.000 02/01/2020 23:42 0.296 03/01/2020 00:37 0.000 03/01/2020 01:32 0.000 03/01/2020 02:27 0.000 02/01/2020 23:43 0.296 03/01/2020 00:38 0.000 03/01/2020 01:33 0.000 03/01/2020 02:28 0.000 02/01/2020 23:44 0.296 03/01/2020 00:39 0.000 03/01/2020 01:34 0.000 03/01/2020 02:29 0.000 02/01/2020 23:45 0.296 03/01/2020 00:40 0.000 03/01/2020 01:35 0.000 03/01/2020 02:30 0.000 02/01/2020 23:46 0.208 03/01/2020 00:41 0.000 03/01/2020 01:36 0.000 03/01/2020 02:31 0.000 02/01/2020 23:47 0.076 03/01/2020 00:42 0.000 03/01/2020 01:37 0.000 03/01/2020 02:32 0.000 02/01/2020 23:48 0.076 03/01/2020 00:43 0.000 03/01/2020 01:38 0.000 03/01/2020 02:33 0.000 02/01/2020 23:49 0.076 03/01/2020 00:44 0.000 03/01/2020 01:39 0.000 03/01/2020 02:34 0.000 02/01/2020 23:50 0.076 03/01/2020 00:45 0.000 03/01/2020 01:40 0.000 03/01/2020 02:35 0.000 02/01/2020 23:51 0.076 03/01/2020 00:46 0.000 03/01/2020 01:41 0.000 03/01/2020 02:36 0.000 02/01/2020 23:52 0.076 03/01/2020 00:47 0.000 03/01/2020 01:42 0.000 03/01/2020 02:37 0.000 02/01/2020 23:53 0.076 03/01/2020 00:48 0.000 03/01/2020 01:43 0.000 03/01/2020 02:38 0.000 02/01/2020 23:54 0.076 03/01/2020 00:49 0.000 03/01/2020 01:44 0.000 03/01/2020 02:39 0.000 02/01/2020 23:55 0.076 03/01/2020 00:50 0.000 03/01/2020 01:45 0.000 03/01/2020 02:40 0.000 02/01/2020 23:56 0.076 03/01/2020 00:51 0.000 03/01/2020 01:46 0.000 03/01/2020 02:41 0.000 02/01/2020 23:57 0.076 03/01/2020 00:52 0.000 03/01/2020 01:47 0.000 03/01/2020 02:42 0.000 02/01/2020 23:58 0.076 03/01/2020 00:53 0.000 03/01/2020 01:48 0.000 03/01/2020 02:43 0.000 02/01/2020 23:59 0.076 03/01/2020 00:54 0.000 03/01/2020 01:49 0.000 03/01/2020 02:44 0.000 03/01/2020 00:00 0.076 03/01/2020 00:55 0.000 03/01/2020 01:50 0.000 03/01/2020 02:45 0.000 03/01/2020 00:01 0.000 03/01/2020 00:56 0.000 03/01/2020 01:51 0.000 03/01/2020 02:46 0.000 03/01/2020 00:02 0.000 03/01/2020 00:57 0.000 03/01/2020 01:52 0.000 03/01/2020 02:47 0.000 03/01/2020 00:03 0.000 03/01/2020 00:58 0.000 03/01/2020 01:53 0.000 03/01/2020 02:48 0.000 03/01/2020 00:04 0.000 03/01/2020 00:59 0.000 03/01/2020 01:54 0.000 03/01/2020 02:49 0.000 03/01/2020 00:05 0.000 03/01/2020 01:00 0.000 03/01/2020 01:55 0.000 03/01/2020 02:50 0.000 03/01/2020 00:06 0.000 03/01/2020 01:01 0.000 03/01/2020 01:56 0.000 03/01/2020 02:51 0.000 03/01/2020 00:07 0.000 03/01/2020 01:02 0.000 03/01/2020 01:57 0.000 03/01/2020 02:52 0.000 03/01/2020 00:08 0.000 03/01/2020 01:03 0.000 03/01/2020 01:58 0.000 03/01/2020 02:53 0.000 03/01/2020 00:09 0.000 03/01/2020 01:04 0.000 03/01/2020 01:59 0.000 03/01/2020 02:54 0.000 03/01/2020 00:10 0.000 03/01/2020 01:05 0.000 03/01/2020 02:00 0.000 03/01/2020 02:55 0.000 03/01/2020 00:11 0.000 03/01/2020 01:06 0.000 03/01/2020 02:01 0.000 03/01/2020 02:56 0.000 03/01/2020 00:12 0.000 03/01/2020 01:07 0.000 03/01/2020 02:02 0.000 03/01/2020 02:57 0.000 03/01/2020 00:13 0.000 03/01/2020 01:08 0.000 03/01/2020 02:03 0.000 03/01/2020 02:58 0.000 03/01/2020 00:14 0.000 03/01/2020 01:09 0.000 03/01/2020 02:04 0.000 03/01/2020 02:59 0.000 03/01/2020 00:15 0.000 03/01/2020 01:10 0.000 03/01/2020 02:05 0.000 03/01/2020 03:00 0.000 03/01/2020 00:16 0.000 03/01/2020 01:11 0.000 03/01/2020 02:06 0.000 03/01/2020 03:01 0.000 03/01/2020 00:17 0.000 03/01/2020 01:12 0.000 03/01/2020 02:07 0.000 03/01/2020 03:02 0.000 03/01/2020 00:18 0.000 03/01/2020 01:13 0.000 03/01/2020 02:08 0.000 03/01/2020 03:03 0.000 03/01/2020 00:19 0.000 03/01/2020 01:14 0.000 03/01/2020 02:09 0.000 03/01/2020 03:04 0.000

©1982-2019 Innovyze Plandescil Limited Page 16 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Event: 01/01/2020 00:00

Time Rain Time Rain Time Rain Time Rain (mm/hr) (mm/hr) (mm/hr) (mm/hr)

03/01/2020 03:05 0.000 03/01/2020 03:49 0.000 03/01/2020 04:33 0.000 03/01/2020 05:17 0.000 03/01/2020 03:06 0.000 03/01/2020 03:50 0.000 03/01/2020 04:34 0.000 03/01/2020 05:18 0.000 03/01/2020 03:07 0.000 03/01/2020 03:51 0.000 03/01/2020 04:35 0.000 03/01/2020 05:19 0.000 03/01/2020 03:08 0.000 03/01/2020 03:52 0.000 03/01/2020 04:36 0.000 03/01/2020 05:20 0.000 03/01/2020 03:09 0.000 03/01/2020 03:53 0.000 03/01/2020 04:37 0.000 03/01/2020 05:21 0.000 03/01/2020 03:10 0.000 03/01/2020 03:54 0.000 03/01/2020 04:38 0.000 03/01/2020 05:22 0.000 03/01/2020 03:11 0.000 03/01/2020 03:55 0.000 03/01/2020 04:39 0.000 03/01/2020 05:23 0.000 03/01/2020 03:12 0.000 03/01/2020 03:56 0.000 03/01/2020 04:40 0.000 03/01/2020 05:24 0.000 03/01/2020 03:13 0.000 03/01/2020 03:57 0.000 03/01/2020 04:41 0.000 03/01/2020 05:25 0.000 03/01/2020 03:14 0.000 03/01/2020 03:58 0.000 03/01/2020 04:42 0.000 03/01/2020 05:26 0.000 03/01/2020 03:15 0.000 03/01/2020 03:59 0.000 03/01/2020 04:43 0.000 03/01/2020 05:27 0.000 03/01/2020 03:16 0.000 03/01/2020 04:00 0.000 03/01/2020 04:44 0.000 03/01/2020 05:28 0.000 03/01/2020 03:17 0.000 03/01/2020 04:01 0.000 03/01/2020 04:45 0.000 03/01/2020 05:29 0.000 03/01/2020 03:18 0.000 03/01/2020 04:02 0.000 03/01/2020 04:46 0.000 03/01/2020 05:30 0.000 03/01/2020 03:19 0.000 03/01/2020 04:03 0.000 03/01/2020 04:47 0.000 03/01/2020 05:31 0.000 03/01/2020 03:20 0.000 03/01/2020 04:04 0.000 03/01/2020 04:48 0.000 03/01/2020 05:32 0.000 03/01/2020 03:21 0.000 03/01/2020 04:05 0.000 03/01/2020 04:49 0.000 03/01/2020 05:33 0.000 03/01/2020 03:22 0.000 03/01/2020 04:06 0.000 03/01/2020 04:50 0.000 03/01/2020 05:34 0.000 03/01/2020 03:23 0.000 03/01/2020 04:07 0.000 03/01/2020 04:51 0.000 03/01/2020 05:35 0.000 03/01/2020 03:24 0.000 03/01/2020 04:08 0.000 03/01/2020 04:52 0.000 03/01/2020 05:36 0.000 03/01/2020 03:25 0.000 03/01/2020 04:09 0.000 03/01/2020 04:53 0.000 03/01/2020 05:37 0.000 03/01/2020 03:26 0.000 03/01/2020 04:10 0.000 03/01/2020 04:54 0.000 03/01/2020 05:38 0.000 03/01/2020 03:27 0.000 03/01/2020 04:11 0.000 03/01/2020 04:55 0.000 03/01/2020 05:39 0.000 03/01/2020 03:28 0.000 03/01/2020 04:12 0.000 03/01/2020 04:56 0.000 03/01/2020 05:40 0.000 03/01/2020 03:29 0.000 03/01/2020 04:13 0.000 03/01/2020 04:57 0.000 03/01/2020 05:41 0.000 03/01/2020 03:30 0.000 03/01/2020 04:14 0.000 03/01/2020 04:58 0.000 03/01/2020 05:42 0.000 03/01/2020 03:31 0.000 03/01/2020 04:15 0.000 03/01/2020 04:59 0.000 03/01/2020 05:43 0.000 03/01/2020 03:32 0.000 03/01/2020 04:16 0.000 03/01/2020 05:00 0.000 03/01/2020 05:44 0.000 03/01/2020 03:33 0.000 03/01/2020 04:17 0.000 03/01/2020 05:01 0.000 03/01/2020 05:45 0.000 03/01/2020 03:34 0.000 03/01/2020 04:18 0.000 03/01/2020 05:02 0.000 03/01/2020 05:46 0.000 03/01/2020 03:35 0.000 03/01/2020 04:19 0.000 03/01/2020 05:03 0.000 03/01/2020 05:47 0.000 03/01/2020 03:36 0.000 03/01/2020 04:20 0.000 03/01/2020 05:04 0.000 03/01/2020 05:48 0.000 03/01/2020 03:37 0.000 03/01/2020 04:21 0.000 03/01/2020 05:05 0.000 03/01/2020 05:49 0.000 03/01/2020 03:38 0.000 03/01/2020 04:22 0.000 03/01/2020 05:06 0.000 03/01/2020 05:50 0.000 03/01/2020 03:39 0.000 03/01/2020 04:23 0.000 03/01/2020 05:07 0.000 03/01/2020 05:51 0.000 03/01/2020 03:40 0.000 03/01/2020 04:24 0.000 03/01/2020 05:08 0.000 03/01/2020 05:52 0.000 03/01/2020 03:41 0.000 03/01/2020 04:25 0.000 03/01/2020 05:09 0.000 03/01/2020 05:53 0.000 03/01/2020 03:42 0.000 03/01/2020 04:26 0.000 03/01/2020 05:10 0.000 03/01/2020 05:54 0.000 03/01/2020 03:43 0.000 03/01/2020 04:27 0.000 03/01/2020 05:11 0.000 03/01/2020 05:55 0.000 03/01/2020 03:44 0.000 03/01/2020 04:28 0.000 03/01/2020 05:12 0.000 03/01/2020 05:56 0.000 03/01/2020 03:45 0.000 03/01/2020 04:29 0.000 03/01/2020 05:13 0.000 03/01/2020 05:57 0.000 03/01/2020 03:46 0.000 03/01/2020 04:30 0.000 03/01/2020 05:14 0.000 03/01/2020 05:58 0.000 03/01/2020 03:47 0.000 03/01/2020 04:31 0.000 03/01/2020 05:15 0.000 03/01/2020 05:59 0.000 03/01/2020 03:48 0.000 03/01/2020 04:32 0.000 03/01/2020 05:16 0.000 03/01/2020 06:00 0.000

Time Area Diagram

Total Area (ha) 0.706

Time (mins) Area From: To: (ha)

0 4 0.706

©1982-2019 Innovyze Plandescil Limited Page 17 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Model Details

Storage is Online Cover Level (m) 1.500

Complex Structure

Cellular Storage

Invert Level (m) 0.000 Safety Factor 2.0 Infiltration Coefficient Base (m/hr) 0.00000 Porosity 0.95 Infiltration Coefficient Side (m/hr) 0.00000

Depth (m) Area (m²) Inf. Area (m²) Depth (m) Area (m²) Inf. Area (m²)

0.000 600.0 600.0 1.201 0.0 717.6 1.200 600.0 717.6

Porous Car Park

Infiltration Coefficient Base (m/hr) 0.00000 Width (m) 17.7 Membrane Percolation (mm/hr) 1000 Length (m) 17.7 Max Percolation (l/s) 87.0 Slope (1:X) 0.0 Safety Factor 2.0 Depression Storage (mm) 5 Porosity 0.30 Evaporation (mm/day) 3 Invert Level (m) 0.700 Membrane Depth (m) 0

Hydro-Brake® Optimum Outflow Control

Unit Reference MD-SHE-0061-1800-1200-1800 Design Head (m) 1.200 Design Flow (l/s) 1.8 Flush-Flo™ Calculated Objective Minimise upstream storage Application Surface Sump Available Yes Diameter (mm) 61 Invert Level (m) 0.000 Minimum Outlet Pipe Diameter (mm) 75 Suggested Manhole Diameter (mm) 1200

Control Points Head (m) Flow (l/s) Control Points Head (m) Flow (l/s)

Design Point (Calculated) 1.200 1.8 Kick-Flo® 0.542 1.3 Flush-Flo™ 0.265 1.5 Mean Flow over Head Range - 1.4

The hydrological calculations have been based on the Head/Discharge relationship for the Hydro- Brake® Optimum as specified. Should another type of control device other than a Hydro-Brake Optimum® be utilised then these storage routing calculations will be invalidated

Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s)

0.100 1.3 0.800 1.5 2.000 2.3 4.000 3.1 0.200 1.5 1.000 1.7 2.200 2.4 4.500 3.3 0.300 1.5 1.200 1.8 2.400 2.5 5.000 3.5 0.400 1.5 1.400 1.9 2.600 2.6 5.500 3.6 0.500 1.4 1.600 2.0 3.000 2.7 6.000 3.8 0.600 1.3 1.800 2.2 3.500 2.9 6.500 3.9

©1982-2019 Innovyze Plandescil Limited Page 18 42-44 Connaught Road 25703 Attleborough Norfolk NR17 2BW Date 24/08/2020 Designed by MJH File 25703 5b Double Storm.SRCX Checked by MJH Innovyze Source Control 2019.1

Hydro-Brake® Optimum Outflow Control

Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s)

7.000 4.1 8.000 4.3 9.000 4.6 7.500 4.2 8.500 4.4 9.500 4.7

©1982-2019 Innovyze