2008/0169 Response to information request - 71 Seaview Tce Sunshine Beach · 132008.169

1.0 INTRODUCTION

JF&P Consulting Engineers Pty Ltd has been commissioned by Adrian Slinger to compile a Soil and Water
Management Plan for the site located at 71 Seaview Terrace, Sunshine Beach. It is proposed to construct a single
residential dwelling on the property. This study outlines the soil and water management requirements for the site
in accordance with Maroochy Shire Council's 'Manual for Urban Erosion and Sediment Control', December 2007.


2.0 SITE CHARACTERISTICS

2.1       INTRODUCTION

While agriculture produces the larger measure of sediment disposition in Australia, construction causes the most
concentrated form of erosion. Eroded soils when carried into water bodies promote algal blooms, reduce water
clarity, deplete oxygen and affect marine (aquatic) life. It is important to provide effective soil and erosion
management for developments with a high risk of soil and sediment erosion during construction. The aim of the
soil and water management plan is to:


      •    Assess the erosion risk at the subject site
      •    Identify suitable measures to overcome the erosion risk
      •    Compare the effectiveness of various erosion control measures

2.2       SITE CONSTRAINTS AND CHARACTERISTICS

The subject site is located on Lot 1, RP 197117 or 71 Seaview Terrace, Sunshine Beach. The total site area is
approximately 9,942m2 of which approximately 3500m2 will be disturbed during construction. It is proposed to
construct a single residential dwelling on the property. The site is bound by Noosa National Park to the north,
residential allotments to the west and south with Sunshine Beach to the east.


Currently the subject site is void of any existing infrastructure and is classified as undeveloped bushland. The site
is exceptionally steep with slopes approaching 30% to the north-east directing overland flows to a natural gully
that runs parallel to the eastern boundary. Ultimately stormwater outfall will reach the ocean at Sunshine Beach.
Minor concentrated and sheet flows from the two residential allotments adjoining the subject site from the west
follow existing overland flow paths through the subject site.


The Revised Universal Soil Loss Equation (RUSLE) is designed to predict the long term average annual soil loss
from sheet and rill flow from a construction site under specific conditions. The RUSLE has been used to determine
the expected soil loss from the subject site. Appendix A provides the detailed calculations used to determine the
average annual soil loss.




 SOIL AND WATER MANAGEMENT PLAN - Revision A                                  71 Sedview Terr c . Sun,hn,.^ Beach   1