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Sharyn Westlake

From: iain.smith@beca.com Sent: Friday, 28 September 2012 10:18 a.m. To: Sharyn Westlake Cc: Susan Borrer; graham.levy@beca.com ; Jan Van Der Vliet Subject: Te Moana Floodway Information

You have received 3 files. Use the secure links below to download.

Hello Sharyn,

Apologies for the delay in providing this information and we acknowledge that it may be too late to be accounted for in GW's evidence.

Further to our meeting on 29 August, please follow the link provided to download the below documents (the mapping is a 17MB file):

1.Water level and flow long sections down the Waimeha Stream (not down the floodway where the majority of the breach flow passes) for the pre/post overflow scenario.

2. Flood mapping & difference plots. To clarify the title, breach flow is equivalent to Q200yr in the VVaikanae with the stopbank breaching at Chillingworth, and with a Q100yr storm in the Waimeha catchment.

Please note that s ubsequent to the modelling, the stopbank has also been lengthened at the upstream end towards Te Moana Road to cut off the small flow bypassing the end of the stop bank that can be seen on the maps.

The maps also do not include the mitigation proposed to address the increases at Puriri Road (bottom left on the difference map) and to Jonathan Smith's property (top right on the difference maps) as the maps were produced prior to addressing these issues.

Regards

lain Smith M2PP Stormwater Design

Level 2, 17-21 Whitmore Street, PO Box 8044, Wellington 6143 Ph: 04 473 7551 Mobile: 027 296 3310 Email: iain.smith@beca.com

Download Files

Available until: 28 October 2012

Dc w ' re: QCCC_' — a +1.-- w_L 66.65 KB, Fingerprint: b363ea5053c48177543179cd7002c2ac

Download File: QCCI )verflow Longsection.pdf

4/10/2012

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67.59 KB, Fingerprint: 7dad83b048fb229f4f9777edd2d353c5

Download File: Q100CC&Chillii Vaimeha Results.pdf 17,470.02 KB, Fingerprint: ac77fc13ec9776917a35f3fd0b05cb4b

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4/10/2012

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