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Mesa H Environmental Review Document Part 11.Pdf 410,000 mE 415,000 mE 420,000 mE 425,000 mE 430,000 mE 435,000 mE LEGEND 22RR RR UU 1 1 Development Envelope RR RR UU 2 2 (( 2(2( (( RR RR UU 4 4 Ministerial Statement 208 22 mN 7,600,000 RR RR UU 5 5 22(( 22 RR RR UU 5 5 22 RR RR UU 3 3 RR RR UU 3 3 Railway r r r r eeeer r r r vvvveeee iiiiiivivvv RRR MM EE SS AA H H RRR Major Watercourse RR RR DD 2 2 (( Permanent Pool RR RR DD 1 1 RR RR DD 3 3 (( (( (( Pool 22(( (2(2 22(( (( (( (( (( (( 22(( 22 ((( (( RR RR DD 4 4 22 RR RR DD 4 4 (((( RRoobb 22 (( oobbeee 22RR RR UU 6 6 22 Aquatic Fauna Sampling Site (( (( RR RR UU 6 6 GnierooraGnieroora (( (( (2(2( (2(2RR RR DD 5 5 mN 7,595,000 22 Dry Sediment Sampling Site (Yeera(Yeera(Yeera Bluff)Bluff)Bluff) (( Conceptual Mine Layout (( 22RR RR DD 6 6 MM ee ss aa J J Mine Pit 22JIMPE3JIMPE3 7,595,000 mN 7,595,000 mN 7,600,000 Waste Dump 22JIMPE2JIMPE2 Topsoil / Subsoil Stockpile 22JIMPE1JIMPE1 7,590,000 mN 7,590,000 JJJJ JJJJiiiiiii iiiiimiim mm aaaa www uuu uuurrrr rrrrrrr rrrr rrrr aaaa aaaa aaaa aaaa aaaa ddd aaaa SCALESCALE 7,590,000 mN 7,590,000 JIMR3JIMR3 22 00 22 44 6km6km JIMR3JIMR3 22 22JIMR2JIMR2 1:1501:150 000000 @@ A4A4 BBB uuuu Disclaimer nnnn gggg CCC This document has been prepared to the highest level of accuracy possible, for the purposes aaaa CCCrrrr rrrr mN 7,585,000 rrrr rrrreee of Rio Tinto’s iron ore business. Reproduction of this document in whole or in part by any oooo eeekkk o o o o kkk means is strictly prohibited without the express approval of Rio Tinto. Further, this document may not be referred to, quoted or relied upon for any purpose whatsoever without the written approval of Rio Tinto. Rio Tinto will not be liable to a third party for any loss, damage, liability or claim arising out of or incidental to a third party using or relying on the content contained in this document. Rio Tinto disclaims all risk and the third party assumes all risk and releases and indemnifies and agrees to keep indemnified Rio Tinto from any loss, damage, claim or liability arising directly or indirectly from the use or reliance on this document. 7,585,000 mN 7,585,000 CCCC I r o n O r e ( W A ) rrrr eeee eeee k k k k Figure 8-11: 7,580,000 mN 7,580,000 Location of aquatic JIMR1JIMR1 22 fauna sampling sites in or near the Development Envelope 7,580,000 mN 7,580,000 Drawn: M.Swebbs Plan No: PDE0159431v4 Date: Jan, 2019 Proj: MGA94 Zone50 410,000 mE 415,000 mE 420,000 mE 425,000 mE 430,000 mE 435,000 mE 415,000 mE 420,000 mE 425,000 mE mN 7,600,000 LEGEND Development Envelope Ministerial Statement 208 7,600,000 mN 7,600,000 MM EE SS AA H H Railway Major Watercourse RRoo && RRoobbeee Conceptual Mine Layout && ((&& && (( (( && (( Mine Pit RR RRiiivivveee && eeerrrr ((&& Waste Dump && Topsoil / Subsoil Stockpile Priority 4 Aquatic Fauna 7,595,000 mN 7,595,000 Leiopotherapon aheneus && (Fortescue Grunter) Blind Cave Eel Record (( Blind Cave Eel eDNA MM ee ss aa J J 7,595,000 mN 7,595,000 (( Confirmed Eel Record SCALESCALE 00 11 22 3km3km 1:751:75 000000 @@ A4A4 JJJiiii iiimim mm Disclaimer aaa www This document has been prepared to the highest level of accuracy possible, for the purposes ururur rrrr of Rio Tinto’s iron ore business. Reproduction of this document in whole or in part by any rrrraaa aaaddd means is strictly prohibited without the express approval of Rio Tinto. Further, this document dddaaa aaa may not be referred to, quoted or relied upon for any purpose whatsoever without the written approval of Rio Tinto. Rio Tinto will not be liable to a third party for any loss, damage, liability or claim arising out of or incidental to a third party using or relying on the content contained (( in this document. Rio Tinto disclaims all risk and the third party assumes all risk and releases CCrrrr rrrreeeeee and indemnifies and agrees to keep indemnified Rio Tinto from any loss, damage, claim or eeekkk liability arising directly or indirectly from the use or reliance on this document. 7,590,000 mN 7,590,000 (( (( I r o n O r e ( W A ) Figure 8-12: 7,590,000 mN 7,590,000 Conservation significant aquatic fauna located in or near the Development Envelope Drawn: M.Swebbs Plan No: PDE0159432v5 Date: Feb, 2019 Proj: MGA94 Zone50 415,000 mE 420,000 mE 425,000 mE 8.4.8 Conservation significant aquatic fauna 8.4.8.1 Fortescue Grunter One fish species of conservation significance was recorded in the Proposed Change Area; the Fortescue Grunter, which was the second most abundant fish species recorded in the Study Area and recorded at all sites upstream and downstream of the Jimmawurrada – Robe confluence. This species is endemic to the Pilbara and is listed on the IUCN Red List of Threatened Species as Lower Risk / Near Threatened and is Priority 4 listed. It is known only from the Fortescue, Robe and Ashburton Rivers; however, is common within its range (WRM 2017). 8.4.8.2 Blind Cave Eel (Confirmed) The Blind Cave Eel is listed as Vulnerable under the EPBC Act. The species is also listed as Threatened – Vulnerable under Schedule 3 of the WA BC Act. The Blind Cave Eel is a pure white fish growing up to 40cm, with an eel-like body, no eyes and a thin rayless membrane around the tip of the tail (DEWHA 2008a). The species is the world’s longest cavefish and one of only two vertebrate animals known from Australia that are restricted to subterranean waters (DEWHA 2008a). This species inhabits caves and groundwater systems in subterranean caves, transmissive geological formations and fissures and wells, utilising cave floor pool sediments, karst aquifers and alluvial aquifers in the western Pilbara. It tolerates a range of salinities from fresh to seawater (DEWHA 2008a). It is known to occur in the Cape Range approximately 225 km west of Mesa H and has been physically recorded from the hyporheic zone in the Robe River within the Proposed Change Area and from three bores located between 1 km and 5 km east and upstream of the Proposed Change Area in Jimmawurrada / Bungaroo Creek alluvial aquifers (Biota 2019b). In addition, the Eel has been recorded via eDNA in a further five locations in the Robe River and Jimmawurrada Creek alluvial aquifers and a pool, both upstream and within the Proposed Change Area. Further details are provided in Section 7. As the Blind Cave Eel is a MNES, this species is subject to assessment as part of the Environmental Review accredited assessment which is addressed in Section 11.1. 8.5 Potential Impacts A number of potential direct and indirect impacts are identified in the ESD. On the basis of surveys completed to date, the following are considered key issues relevant to the Proposed Change and are addressed in Section 8.6 and 0. 8.5.1 Direct impacts The potential direct impacts of the Proposed Change on Terrestrial Fauna have been identified as: • loss or fragmentation of fauna habitat including breeding, foraging and dispersal habitat due to clearing; and • loss of individuals from increased vehicle strikes, collisions with fencing and construction activities. The Proposed Change involves clearing of up to 2,200 ha of native vegetation across seven mapped terrestrial fauna habitats within the Proposed Change Area which are described in Section 8.4.2.1. The predicted direct impacts to these fauna habitats and an assessment of potential impacts to these habitats is provided in Section 8.5 and Section 8.6. Vehicular movements will increase in the Development Envelope as a result of construction and operation activities and may result in an increase in vehicle collisions with wildlife. Mesa H Proposal (Revision to the Mesa J Iron Ore Development) 348 Vehicle strike of terrestrial fauna species (including conservation listed species) has the potential to decrease local fauna abundance, particularly species which are attracted to roads for basking or foraging activities. Fencing within mining areas of the Development Envelope also poses a risk to some terrestrial fauna species, particularly bat species which may collide with and become entangled in fencing. 8.5.2 Indirect Impacts The potential direct impacts of the Proposed Change on Terrestrial Fauna have been identified as: • alteration of fauna habitat due to altered hydrology arising from groundwater abstraction and increased temporal availability of surface water from discharge of surplus water; • loss or degradation of habitat due to noise and vibration; • degradation of habitat due to dust and light emissions; • degradation of habitat due to altered fire regime, introduction or spread of weeds and changes to feral animal populations; and • degradation of aquatic fauna habitat due to changes in water chemistry as a result discharge of surplus water. Groundwater abstraction for pit dewatering will result in localised groundwater drawdown in the Mesa H CID aquifer, which has some connectivity to the Robe River alluvial aquifer. The modelling indicates the potential for a reduction in water levels in the Robe River alluvial aquifer and the Robe River semi-permanent and permanent pools up to 1 m.
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