Power consumption, power production and ratio of power consumption for hydraulic, organic and sludge loads to total consumption shall be entered in Schedule 11.8 Net Power Consumption sheet in Volume 4 Schedule of Payments. Net Power Consumption [(Total power consumption for hydraulic, organic and sludge load)- (Power production by CHPs)] shall be entered in Schedule 10.1 in Volume 4 Schedule of Payments. 

## 3.4.2 Chemical Consumption Commitment 

The Tenderer commits that the consumption of chemical is less or equal to the specified below: 

## 3.4.2.1 Chemical for Sludge Conditioning 

The Tenderer commits that chemical for sludge conditioning is less or equal to the one declared in Volume 4, Schedule 11.4. 

## Conditions 

The tenderer shall follow strictly all the conditions herein stated in his chemical calculation for sludge conditioning. Any other assumptions, figures and factors shall NOT be used unless clearly stated. 

The tenderer shall prepare one calculation sheet for each scenario by using the below data. 

i. The poly dosage rate for thickening shall be ≥ 3 kg dry poly / ton DS 

ii. The poly dosage rate for dewatering shall be ≥ 4 kg dry poly / ton DS 

iii. Amount of excess sludge: to be calculated by the tenderer based on excess sludge produced at the wastewater temperature given above, as kg/day and kg/year 

iv. Dewatered sludge, in Schedule 11.4 in Volume 4 refers to the amount of solid in kg dewatered. For example if total solids entered into the dewatering system is 600 kg/day, then the amount of yearly dewatered sludge shall be 600 x 365 = 219,000 kg SS dewatered/year, as to be entered in the schedule, item “d”. 

v. When the tenderer’s chemical consumption figure for excess sludge thickening (item “c” in the schedule) divided by the tenderer’s value for amount of excess sludge (item “b” in the schedule) i.e. c / b, the output figure in terms of kg dry polymer / kg SS shall be same as given in the Guarantee for Performance section Table for “Guarantee Values for Wastewater Treatment Plant” 

## 3.4.2.2 Chemical for Phosphorus Removal 

The Tenderer hereby commits that chemical for phosphorus removal is less or equal to the one declared in Volume 4 Schedule 11.5. 

## Conditions 

The tenderer shall follow strictly all the conditions herein stated in his chemical calculation for phosphorus removal. Any other assumptions, figures and factors shall NOT be used unless clearly stated. 

