RE: LICENCE RENEWAL of L9158/2018/1 1. Site Setting
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08th April 2019 Our Ref: 00404_LR_AC_080419 Department Administering the Environmental Protection Act 1986 Locked Bag 10 JOONDALUP WA 6027 [email protected] RE: LICENCE RENEWAL OF L9158/2018/1 To whom it may concern, Site Environmental and Remediation Services Pty Ltd (SERS) have been engaged by Brajkovich Landfill and Recycling Pty Ltd (hereby known as ‘the Client’) to complete and submit a report in support of the Department of Water and Environmental Regulation (DWER) Application form: Renewal under Part V, Division 3 of the Environmental Protection Act 1986. The subject licence (L8970/2016/1) is for a Class I inert landfill site located at 91 (Lot 5) Walyunga Road, Bullsbrook. The Site operates under the premises name Brajkovich Landfill North. The licence was granted on the 13th June 2016, following the lapsing of the previous licence (L8726/2013/1). The listed proprietor on the Certificate of Title is Stargaze Asset Pty Ltd and the licence holder is Brajkovich Landfill and Recycling Pty Ltd. Both companies share a Director, in which defines the lease term as indefinite. The relevant documents providing proof of occupier status and current company extracts have been included as Attachment 1 and Attachment 2 at the rear of this report. This application has been submitted to apply for an extension of the licence expiry date to allow for the completion of the rehabilitation of the cells. Currently, landfilling of cells has been completed in Cells 4 to 9 and 12. As such, the remaining cells 1, 2, 3, 10, 11, 14, 15, 16, 17 and 18 still require filling. This application is to encompass a licence extension on all activities associated with L8970/2016/1. A Site Plan outlining the cell design and location has been included as Attachment 4 at the rear of this report. The Site has operated under a series of Planning Approvals, as approved by the City of Swan (the relevant Local Government Authority). The planning approvals have been included as Attachment 5 at the rear of this report, they are inclusive of: • DA-578/2013 EXTENSION OF THE EXCAVATION AREA • DA-171/2014 INDUSTRY EXTRACTIVE – STAGE 111 • DA-399/2016 EXTRACTIVE INDUSTRY There is an additional development approval listed under DA-946/2016 INDUSTRY – EXTRACTIVE which was approved by the Development Assessment Panel on the 10th April 2017. A request has been put in to the relevant bodies to attain this approval. This will be provided to the Department of Water and Environmental Regulation to be considered within this licence renewal application once received. 1. Site Setting The Site is located approximately 30km north-west of the Perth CBD at the base of the Darling Scarp, a shallow granite protrusion forming the eastern boundary of the Swan Coastal Plain. The Site is abutted to the east by Walyunga National Park, and the majority of the surrounding area is put to pastoral, agricultural or vinicultural use. Further information regarding the Sites environmental characteristics is outlined within this Section. 1.1 Meteorology 1.1.1 Rainfall The Site is within a Mediterranean climatic zone with long, hot, dry summers and short, wet winters. As shown in the tables below, the majority of rainfall received falls in winter, however average precipitation levels have undergone decreasing trends over the recent years, and a more significant decreasing trend over a longer period (BoM, 2019). Table 1 Monthly rainfall recorded at Pearce RAAF over the past five years (BoM, 2019) <03/04/2019> 5 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual years (mm) 2014 0.2 0.0 6.2 23.2 123.9 87.4 104.6 86.7 55.6 25.6 20.4 - - 2015 1.2 32.6 26.8 54.6 58.4 64.6 97.8 93.4 32.8 13.4 9.6 15.4 500.6 2016 20.2 1.0 101.8 68.2 90.2 94.2 119.2 134.2 50.2 44.6 7.4 13.8 745.0 2017 54.6 98.6 39.8 0.0 41.2 39.0 173.8 126.0 88.4 26.2 1.4 36.6 725.6 2018 69.4 1.2 0.8 16.6 62.2 116.8 150.4 194.6 20.4 43.6 3.8 2.4 682.2 Table 2 Average monthly rainfall statistics for all years on record (1937 - present) (BoM, 2019) <03/04/2019> 5 years Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annua (mm) l Mean 10.6 13.0 16.4 34.5 83.9 130. 134. 106. 68.8 36.0 22.5 11.1 655.1 0 4 2 Lowest 0.0 0.0 0.0 0.0 4.2 10.5 24.4 17.6 7.2 1.5 0.0 0.0 348.2 Median 1.4 4.4 7.9 31.7 77.2 121. 135. 106. 65.4 33.9 17.5 5.9 650.2 9 6 2 Highest 108.6 98.6 101. 113. 195. 388. 242. 225. 155. 84.5 93.9 64.4 985.2 8 7 5 8 6 8 3 1.1.2 Evaporation Evaporation varies seasonally, however annual evaporation rates exceed annual precipitation levels. Evaporation consistently exceeds rainfall throughout spring and summer to mid-autumn, from September to April. Rainfall exceeds evaporation levels from late autumn through winter, from May to August. Evaporation data is included in Table 3 below. Average pan evaporation maps for annual and seasonal data are included within Attachment 6. Table 3 Monthly evaporation levels (BoM, 2011) <21/06/11> Statistics Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual (mm) Range 300- 250- 250 150- 80- 60- 60- 80- 100- 175- 250- 300- 1800- 350 300 175 100 80 80 100 125 200 300 350 2000 1.1.3 Seasonal wind strength and direction Wind data has been taken from the BoM database and wind roses have been generated and included within Attachment 7. Data contained within the wind roses has been recorded from the Perth Airport. It is not expected that conditions at Lot 5 Walyunga Road are significantly different from those presented below. Spring mornings are calm approximately 13% of the time. Approximately 22% of the time, wind comes from the east, with winds from the north-east and south approximately 12% of the time each. Winds rarely reach above 30 km/h, and then dominantly from the east. Winds on Spring afternoons come from the south-west approximately 35% of the time, and from the west approximately 30% of the time, most commonly reaching speeds between 20 and 30 km/h. They are calm only 3% of the time. 2 Summer mornings show a pronounced dominance of winds from the east, occurring approximately 36% of the time. As in Spring, winds come from the north-east and south approximately 11% and 15% of the time respectively. Conditions are calm only 7% of the time. Summer afternoons show a more pronounced dominance of wind from the south-west, occurring 40% of the time, and westerlies lessening to 25%. Dominant wind strength remains between 20 and 30 km/h. Calm conditions occur only 2% of the time. Autumn mornings emulate spring mornings with greater prevalence of easterlies, approximately 30% of the time. North-easterlies occur approximately 20% of the time, and 18% of the time conditions are calm. Autumn afternoons show equal influence of south-westerlies and westerly winds occurring approximately 22% of the time each, averaging speeds of 10-30 km/h. Easterlies also take increasing precedence occurring approximately 15% of the time. Only 5% of conditions are calm. Winter mornings show weak winds from the north-east dominating around 25%, with 15% of winds from the north and 15% from the east. Wind speeds are predominantly up to 20 km/h and are calm for 22% of the time. Winter afternoons are calm 8% of the time, with 20% of the wind from the west, 15% from the south- west and 12% from the north-west. Winds are commonly up to 20 km/h. 1.2 Geology and Hydrology 1.2.1 Soils Surface geology at the site is composed of the following formations: • Yoganup Formation: leached and ferruginised beach sand • Guildford Clay: alluvium (clay, loam, sand and gravel) And may also contain: • Colluvium, including valley-fill deposits, variably lateralized. Australian Soil Resource Information System (ASRIS) Atlas of Australian Soils has four Northcote Factual Key soil types logged as occurring across the site: Mw31: Deeply incised, steep scarp and valley side slopes of the Darling scarp and its more deeply incised tributary valleys: chief soils of the steep scarp and valley side slopes, on which massive rock outcrops are a feature, seem to be acid red earths (Gn2.14) on the colluvial slope deposits. Associated are (Dr2.21) and (Dy3.21) soils on moderate to steep upper slopes with some (Uc4.11) soils containing ironstone gravel on spurs and ridge tops. Ub97: Very gently undulating plain: chief soils are neutral, and also alkaline, yellow mottled soils (Dy3.42 and Dy3.43) overlying siliceous pans at depth. Wd6 Plain: chief soils are sandy acidic yellow mottled soils (DyS.81), some of which contain ironstone gravel, and in some deeper varieties (18 in. of A horizon) (Uc2.22) soils are now forming. Associated are acid yellow earths (Gn2.24). Other soils include (Dy3.81) containing ironstone gravel; (Dy3.71); low dunes of (Uc2.33) soils; and some swamps with variable soils. 3 1.2.2 Geology Geo VIEW.