11.     FUTURE KEY ISSUES

11.1       Construction Programme for the Next Three Month

·             Demolition of Admin. Building, Settled Sewage Overflow Chamber, Sludge Holding Tanks no. 1, 3 & 4 (below ground), Return Activated Sludge Screw Pump Pumping station, Air Floatation Thickener and Auxiliary Pumping Station (below ground);

·             Pipe Laying and construction of RC chamber at Zone 2B and subsequence diversion work;

·             Sheet pile installation, ELS work and RC structure at IW & PST;

·             Piling work at PST & Transformer House;

·             Piling work at Sludge Thickening Building;

·             Drilling and installation of dewatering well and observation well at IW & PST;

·             ELS works at IW & PST;

·             Construction of RC structure at 3 zone (Location D -Temp. Primary Sludge Pumping Station);

·             Pipe laying for Zone 3 diversion;

·             Drilling & installation of pipe pile wall for demolition of Aeration Tank no. 5-8 at AGS;

·             Construction of CLP Substation;

·             Construction of MiC office;

·             Demolition of PST no. 4;

·             Ground investigation at SDB, SDT & STB;

·             Sheet piling work around Sludge digester no. 1 – 3;

·             Installation of brand drain at Biogas Holder no. 1;

·             Installation of concrete blocks and soil Surcharge at Biogas Holder no. 1;

·             Construction of temp. traffic road at north of SHT no. 3 & 4;

·             Construction of PST structure; and

·             Zone 3:

    1. E&M work at temp. Gravity thickening tank (Atal);
    2. E&M work at temp. Sludge Holding Tank (Atal);
    3. E&M work at temp. water heater house (Atal);
    4. RC work at temp. Primary sludge pumping station;
    5. ELS, RC construction and E&M work at Temp. digested sludge pump;
    6. E&M work at Digested Sludge Pumping Station.

11.2      Key Issues for the Coming Month

11.2.1     Potential environmental impacts arising from the above construction activities are mainly associated with construction dust, construction noise, waste management, ecology, land contamination and landscape and visual impact issues.

11.3      Monitoring Schedules for the next three months

11.3.1     The tentative schedule for environmental monitoring in the next three months is provided in Appendix E.