Green Valley Sand Quarry
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Pty Limited ABN: 31 000 032 191 Green Valley Sand Quarry AAQUATIC EECOLOGY AASSESSMENT Prepared by: Cardno Ecology Lab September 2010 Specialist Consultant Studies Compendium: Volume 1, Part 4 This page has intentionally been left blank Pty Limited ABN: 31 000 032 191 AAQUATIC EECOLOGY AASSESSMENT of the Green Valley Sand Quarry Prepared for: R.W. Corkery & Co. Pty Limited 1st Floor, 12 Dangar Road PO Box 239 BROOKLYN NSW 2083 Tel: (02) 9985 8511 Fax: (02) 9985 8208 Email: [email protected] On behalf of: Rocla Pty Ltd 72 Orchardleigh Street PO Box 36 GUILDFORD NSW 2161 Tel: (02) 9632 0122 Fax: (02) 9632 7471 Email: [email protected] Prepared by: Cardno Ecology Lab (NSW/ACT) Pty Ltd Trading as Cardno Ecology Lab 4 Green Street BROOKVALE NSW 2100 Tel: (02) 9907 4440 Fax: (02) 9907 4446 Email: [email protected] September 2010 Cardno Ecology Lab ROCLA PTY LTD 4-2 SPECIALIST CONSULTANT STUDIES Green Valley Sand Quarry Part 4 - Aquatic Ecology Assessment Report No. 765/03 COPYRIGHT © Cardno (NSW/ACT) Pty Ltd Trading as Cardno Ecology Lab, 2010 and © Rocla Pty Ltd, 2010 All intellectual property and copyright reserved. Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright Act, 1968, no part of this report may be reproduced, transmitted, stored in a retrieval system or adapted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise) without written permission. Enquiries should be addressed to Cardno Ecology Lab (NSW/ACT) Pty Ltd. Cardno Ecology Lab SPECIALIST CONSULTANT STUDIES 4-3 ROCLA PTY LTD Part 4 - Aquatic Ecology Assessment Green Valley Sand Quarry Report No. 765/03 CONTENTS Page EXECUTIVE SUMMARY ......................................................................................................................................... 4-5 1. INTRODUCTION........................................................................................................................................... 4-7 1.1 Aims ................................................................................................................................................... 4-7 1.2 Study Area ......................................................................................................................................... 4-7 2. REVIEW OF EXISTING INFORMATION ...................................................................................................... 4-8 2.1 Physical Setting ................................................................................................................................. 4-8 2.2 Water Quality ..................................................................................................................................... 4-9 2.3 Aquatic Plants .................................................................................................................................... 4-9 2.4 Aquatic Macroinvertebrates ............................................................................................................... 4-9 2.5 Fish .................................................................................................................................................. 4-10 2.6 Platypus ........................................................................................................................................... 4-11 2.7 Threatened and Protected Species, Populations, Communities and Processes .............................4-11 2.7.1 Listings under the Environment Protection and Biodiversity Conservation Act 1999 ...... 4-11 2.7.1.1 Threatened Species ....................................................................................4-11 2.7.1.2 Threatened Ecological Communities ........................................................... 4-13 2.7.2 Listings under the Threatened Species Conservation Act 1995 ..................................... 4-13 2.7.2.1 Threatened Species ....................................................................................4-13 2.7.2.2 Threatened Ecological Communities ........................................................... 4-14 2.7.2.3 Key Threatening Processes ........................................................................4-14 2.7.3 Listings under the Fisheries Management Act 1994 ....................................................... 4-15 2.7.3.1 Threatened Species ....................................................................................4-15 2.7.3.2 Protected Species .......................................................................................4-16 2.7.3.3 Key Threatening Processes ........................................................................4-16 2.7.4 Listings under the National Parks and Wildlife Act 1974 ................................................. 4-16 3. FIELD INVESTIGATIONS .......................................................................................................................... 4-17 3.1 Site Selection ................................................................................................................................... 4-17 3.2 Sampling Methods ........................................................................................................................... 4-17 3.2.1 Habitat Characteristics ....................................................................................................4-17 3.2.2 Water Quality .................................................................................................................. 4-18 3.2.3 Macrophytes ................................................................................................................... 4-18 3.2.4 Macroinvertebrates .........................................................................................................4-18 3.2.5 Fish ................................................................................................................................. 4-19 3.3 Laboratory Methods ......................................................................................................................... 4-19 3.4 Data Analysis ................................................................................................................................... 4-19 3.4.1 Water Quality .................................................................................................................. 4-19 3.4.2 Macroinvertebrate AusRivAS Models .............................................................................4-19 3.5 Results ............................................................................................................................................. 4-20 3.5.1 Habitat Characteristics ....................................................................................................4-20 3.5.1.1 Location 1 (Sites 1 and 2) ...........................................................................4-21 3.5.1.2 Location 2 (Sites 3 and 4) ...........................................................................4-21 3.5.1.3 Location 3 (Sites 5 and 6) ...........................................................................4-22 3.5.2 Water Quality .................................................................................................................. 4-22 3.5.3 Macrophytes ................................................................................................................... 4-22 Cardno Ecology Lab ROCLA PTY LTD 4-4 SPECIALIST CONSULTANT STUDIES Green Valley Sand Quarry Part 4 - Aquatic Ecology Assessment Report No. 765/03 CONTENTS Page 3.5.4 Aquatic Macroinvertebrates ............................................................................................ 4-23 3.5.4.1 General Findings ......................................................................................... 4-23 3.5.4.2 AusRivAS Analyses .................................................................................... 4-23 3.5.5 Fish ................................................................................................................................. 4-23 3.5.6 Platypus .......................................................................................................................... 4-24 3.6 Discussion ....................................................................................................................................... 4-24 4. ASSESSMENT OF IMPACTS .................................................................................................................... 4-25 4.1 Description of Proposed Works ....................................................................................................... 4-25 4.2 Potential Environmental Constraints Associated with the Proposed Works ..................................... 4-26 4.2.1 Miscellaneous Environmental Constraints ...................................................................... 4-26 4.2.1.1 Water Contamination .................................................................................. 4-26 4.2.1.2 Sediment Mobilisation ................................................................................. 4-26 4.2.2 Listed Key Threatening Processes ................................................................................. 4-27 4.2.2.1 Degradation of Riparian Vegetation ............................................................ 4-27 4.2.2.2 Removal of Large Woody Debris ...............................................................