Figure 16 Pre-cast concrete slab and ferro-cement reservoirs at Weld Street Blenheim, Elevation Picton and Renwick. Modern concrete reservoirs have recently been constructed at Middle Renwick Road and Central WTP, Blenheim Low Level and Victoria Domain, Picton. Polyethylene tanks have also been utilised at sites such as Forest Park, Blenheim, Boons Valley Picton, Marlborough Ridge and various smaller sites. All are in excellent to good condition. There are a number of older concrete slab and ferro-cement reservoirs at Weld St Blenheim, The Elevation and Waikawa, Cloudy Bay Business Park, Renwick WTP and on the Awatere system. Inspection and structural assessment of the reservoirs at Weld Street and Cloudy Bay was undertaken in 2008. Additional seismic strengthening and upgrade works has been identified. Work on the Cloudy Bay Business Park Reservoir was completed in 2014. Strengthening of the Weld Street Reservoir can only be commenced after the construction of the Taylor High Level Reservoir in 2016/17. Older type ferro-cement reservoirs at Wheelers Hill, Flaxbourne and Blind River Loop were damaged beyond repair by the Seddon Earthquake in August 2013. These have since been replaced by modern pre-cast concrete tanks. Page 56