Provision for new wash down bay and two (2) structures at the RoadTek Depot - Samuels Rd Bundaberg

Approvals

• Plumbing approval (plumbing permit) is required from Bundaberg Regional Council
• Development assessment/approval is required from Bundaberg Regional Council.

Equipment

• A sediment trap/sump is required to settle out dirt/debris and must be fitted with a screen/grate/arrestor to remove solids such as rags/packaging.
• Supply and install of a rainwater tank, to be supplied from the roof of the washdown bay to supply water to the pressure washer.

1. Rainwater tank would require a flow meter installed to capture volumes used.
2. A ‘switch’ connection would also be required to switch to Council’s water supply if no rainwater available.

• Oil water separators shall have a capacity greater than the peak hourly flow (L/hr).

Design

• Approx size of washpad:

1. 7m wide
2. 11m long
3. 6.5m high (roof)

• Stormwater and wastewater must be kept separate, so the wash bay design must consider this.
• Required to be roofed and roofing is to overhang the bund by 25% of the open wall height.

1. Alternatively, enclosing the wash bay may be an alternative to overhanging roofing.

• Bund of at least 100mm high (or speed hump of 75mm high) is required on all sides to prevent entry of surface stormwater into the wash bay.
• Floor is to be impervious (e.g., preferably concrete).

Material Handling

The following products will need treatment/management from the wastewater generated from the wash down bay:

• Hydrocarbons (oil/diesel)
• Dirt/debris
• Cationic emulsion (emulsion spills 1-2 times per week, generally maximum volume is 500mL).
• Kerosene (used for emulsion at 50% of spill volume – up to 250mL).
• Herbicides (assuming negligible amounts, if any at all. The presence/absence of herbicides will need to be confirmed with the successful contractor to ensure waste water is effectively treated).

Discharge to holding tank

• Requires regular pump outs of holding tank by a licensed regulated waste transporter (waste will be regulated under code J120 – oily water).
• Holding tank will require a manhole or similar opening to enable sucker truck access for pump outs.
• Holding tank should meet the relevant Australian Standard (e.g., AS/NZS 4766 for polyethylene storage tanks).
• Pump outs will be carried out by a licensed regulated waste transporter (e.g. Cleanaway).

Additional Installations

Structure 1 – Covered Area Front

• Design and construct roof structure to be located at the front of an existing shed
• Utilising existing base
• Steel/colourbond construction
• Angle/guttering to support water flow into existing water tank.
• Approximate size:

1. 3.5m high
2. 8.5m wide
3. 6.4m depth

Structure 2 – Covered Area Side

• Design and construct roof structure to be located at the side of an existing shed
• Utilising existing base
• Steel/colourbond construction
• Angle/guttering to support water flow into existing water tank (if able).
• Approximate size:

1. 3m high
2. 7m wide
3. 4.9m depth