Water Management System Review of the Existing System – Sources Intended to be used Bore wells Open Wells Tanker Supply KWA Rain water (??) STP Recycled water (300 KLD) GTCS

Water Management System Review of the Existing System – Treatment Systems RO Plant of 10 cum /hr – Storage Provided 300 KL in Fire Storage (Feed from KWA/Tanker / Bore wells) 300 KL of Raw Water ( Overflow from Fire Tanks) Treated Water 100KL ( HVAC Make up ) Treated water 100 KL ( Drinking water supply) TOTAL Usable Storage 500KL (Half day storage!!) GTCS

Water Management System Review of the Existing System – Distribution System Transfer Pumps to OHT HNS for Mall and Hotel – Pump Rooms Located in Basement 100sqm area – Rain water Storage Cumulative Storage Possibility is 300KL 14 Sump pits provided to collect roof rain water All sum pits designed to discharge excess water to canal GTCS

Water Management System Review of the Existing System – Observations Rain water as a source of water for six months has not been considered in the proposal. Insufficient storage possibility of rain water. Constructed storage volume of tanks is practically inconsistent with the actual consumptions, even for the originally anticipated footfalls. Systems of Plumbing to utilize rain water to be redesigned. The projected water demand for the footfalls in the mall was 300KL per day. Current demand increase is due to footfalls resulting in 1000KL water demand. Hotel Demand shall add to this number. GTCS

Water Management System Review of the Existing System – Observations Variation in bore well TDS not accounted for in the treatment plant. Presently blending principle being used to dilute the TDS before feeding the RO Plant. Faulty STP unable to feed HVAC make up and Flushing Systems. Zero support in Water Management from STP. KWA water yet to be provided. Tanker Supplies erratic. GTCS

Water Management System CORRECTIONS PROPOSED With all surfaces provided with RCC slabs in the yard, practically utilizing the rain water as a source of water becomes very difficult. Properly designed piping system is required to be used to ensure maximum utilization. Storage of water needs to be augmented using practically feasible options in the available space without compromising the functioning of the building. A minimum of 1000 KL to be added in the premises. This is just about one day storage!! Systems of Plumbing to utilize rain water to be redesigned. Collection Sumps to be redesigned to ensure connections to the main rain water management plan. The projected water demand for the footfalls in the mall is to be planned for 1200 KL per day. Additionally the Hotel water demand is expected to be 500 KL per day GTCS

Water Management System CORRECTIONS PROPOSED Variation in bore well TDS has to be accounted for in the treatment plant. Lower TDS water to be subjected to separate RO Plant. Higher TDS water to be routed through separate RO Plant. This is to ensure that in the situation of variation of volume of water from each bore well, dilution variance is avoided. Faulty STP to be redesigned as per GTCS proposal, to generate good water and feed HVAC make up and Flushing Systems. 500 KL per day of usable water to be made in Sullage Treatment Plant. 200 to 300 KL of treated water from Sewage Treatment Plant shall be made available for reuse. GTCS

Water Management System CORRECTIONS PROPOSED KWA water yet to be provided. Suitable interactions with Authorities to be conducted to hasten the process. A provision of at least 100 KLD shall support the system adequately. Tanker Supplies erratic. Dependence on tankers to be brought down as far as possible. In three months, there should be not more tankers on the premises, unless in situations of plant shutdown. GTCS

Water Management System (HOTEL AND MALL)( KLD) GTCS Bore wells (upto 2000 TDS) A Bore wells (upto TDS) B OPEN wells (upto 2000 TDS) C OPEN wells (upto TDS) D RAIN WATER STORAGE (Use Fire tanks and Sump Pits)(600KL) E TREATED WATER FROM SULLAGE TP F TREATED WATER FROM SEWAGE TP F COLLECTION TANKS 75KL PRE TREATED TANKS 75KL 10KL/H RO PLANT 1 (TDS<2000) 10KL/H RO PLANT 2 (TDS<12000) RO TREATED TANKS 200KL 10KL/H RO PLANT 3 (EXISTING) (TDS<12000) Plant Operations for 16 hours per day Plant OP 24 hours per day TO KITCHENS RECYCLED TREATED TANKS 200KL Plant OP 24 hours per day TO HVAC MAKE UP TO FLUSHING DWS TO HOTEL AND MALL TREATED RAIN WATER TANKS 200KL Filtration Plant Operations for 16 hours per day 300 KLD 400 KLD 300 KLD 600 KLD HOTEL AND MALL

ADDITIONAL STORAGE REQUIREMENTS GTCS RAIN WATER STORAGE (Use Fire tanks and Sump Pits)(600KL) (FEED ONLY Water with TDS<500) COLLECTION TANKS 75KL (USE EXISTING TANKS) COLLECTION TANKS 75KL (NEW TANK IN FRP) PRE TREATED TANKS 75KL (USE EXISTING TANKS) PRE TREATED TANKS 75KL (NEW TANK IN FRP) RO TREATED TANKS 200KL (USE EXISTING TANKS) RO TREATED TANKS 200KL (NEW TANKS IN RCC/ FRP) RECYCLED TREATED TANKS 200KL ( USE EXISTING 100 KL WITH STP; BUILD NEW 200KL WITH SULLAGE TP) TREATED RAIN WATER TANKS 200KL (NEW TANKS IN FRP/ RCC) EXISTING TANK NEW TANK

THE WAY FORWARD INTENT OF DESIGN Maximize water sourcing within the premises. Reduce dependence on Tankers. Harvest Rainwater to the maximum potential Design scientific borewell recharge systems Treat water as per need and requirement Utilize Recycled water from STP and Sullage TP Improve cumulative storage to at least ONE DAY STORAGE GTCS

THE WAY FORWARD MODIFICATION REQUIRED Construct New Storage Tanks in possible locations. Utilize Sump Pit Storage Volume in Rain water harvesting. Engineering modification of level controls required. Additional piping required. Provide separate system of Borewell recharge with Additional support bores. Install RO Plant 2 (TDS<2000) 10KL per hour Install RO Plant 3 ( TDS <12000) 10 KL per hour Install Filtration and Disinfection unit 20 KL per hour Add 700 KLD Sullage Treatment Plant (Photochemical Oxidation for COD Removal) Innovation in Design by GTCS. Add new 500 KLD Sewage Treatment Plant for Mall Revive existing 460 KLD Sewage Treatment Plant. Add 250 KL DAFF Reactor for handling oil in sullage from mall and Hotel ( in future) Modify Oil traps in feed system GTCS

THE WAY FORWARD BUDGETARY COST OF MODIFICATION REQUIRED New Storage : 750 Rs 20/litre = Rs 150 Lakhs Utilize Sump Pit Engineering modification of level controls required. Additional piping required and bore well recharge. LS: Rs 100 Lakhs RO Plant 2 (TDS<2000) 10KL per hour LS: Rs 50 Lakhs RO Plant 3 ( TDS <12000) 10 KL per hour LS: Rs 50 Lakhs Filtration and Disinfection unit 20 KL per hour LS: Rs 15 Lakhs 700 KLD Sullage Treatment Plant (Photochemical Oxidation for COD Removal) Innovation in Design by GTCS. LS: Rs 75 Lakhs 500 KLD Sewage Treatment Plant for Mall LS: Rs 45 Lakhs Revive existing 460 KLD Sewage Treatment Plant. LS: Rs 15 Lakhs Add 250 KL DAFF Reactor for handling oil in sullage from mall and Hotel ( in future) LS: Rs 15 Lakhs Modify Oil traps in feed system LS: Rs 15 Lakhs Consulting Fee for all additional works and design of Water Management System: TWO Months Savings in cash outflow from current expense levels, after all systems are commissioned GTCS

THE WAY FORWARD JUSTIFICATION As per Current statistics, the cost of water procurement per day Rs 60000/- assuming 800KL Rs 1500 per tanker. This is a monthly expense of nearly Rs 2 crores RECURRING EVERY MONTH. Annually Rs 24 Crores!! In two years, if no revamping is done, this cost will go up to Rs /- per day, assuming 1500KL per tanker. This is a monthly expense of nearly Rs 4 crores RECURRING EVERY MONTH. Annually Rs 48 Crores!!. Risk of water not being available is also very high. With the proposed Revamping of the Water Management System Scientifically, within the next five months, the Management stands to bring down the cash outflow to less than Rs 50 Lakh per month, even when the hotel operations are commenced. This saving is estimated at Rs 1.5 crore per month. GTCS

THE WAY FORWARD JUSTIFICATION The Anticipated payback of the total revamping Cost other than Consultants’ fee Rs 5 crores, is less than 4 months, once all systems are in complete utilization!!! The Only risk factor is the continued yield and quality from the Borewells. For mitigating this to a large extent, the rain water excess shall be fed to the low TDS bores continuously to ensure optimal aquifer recharge in the draw down zone. GTCS

CONCLUSION The Present method of water management leaves the Entire system at a great risk, and thereby is likely to cause serious inconvenience to the users of the premises. There is a likelihood of complaints from various quarters likely to start coming in with the possibility of renegotiations of rentals etc. All these put together need a very serious attention to the root cause of the issue. It is only through serious attention to the root cause, that the problem can be resolved. A clearly defined scientific approach with proper execution is needed to ensure the success of the proposal. A clearance from the Management shall enable detailed design of the High Side Water management Systems. THANK YOU GTCS