Guyana Water Incorporated

World Bank

Water Sector Consolidation Project-Grant No.H180-0-GUA

Summary
The Government of Guyana has received a grant in the amount of US$11.3 million from the International Development Association toward the cost of the “Water Sector Consolidation Project”, and intends to apply this grant to eligible payments under the following projects which will be executed at Lima, Vergenoegen, and Cotton Tree.

• Procurement of Works

• Design and Construction of Water Treatment Plants

• Drilling of potable water wells at Lima, Vergenoegen and Cotton Tree

• Construction of Transmission mains and DMA set up

• Distribution System upgrade

• Procurement of Services

• Consultancy supervision of the construction of Water Treatment Plants

• Procurement of Goods

• Procurement of Materials for Revenue Metering and Service Connection Upgrade

Particulars of Projects for Division #1;

The project area extends from Queenstown to Walton Hall inclusive of both villages, taking in the primary population centre of Anna Regina. The projected 2024 population covered by the intervention is 18,727, generating an average water demand of 3.37 MLD.

The objectives of these projects are to provide continuous supply, with a minimum pressure of 7m (10 psi) at the extremity of the distribution system, to reduce unaccounted for water to 25% of supply, and meet the World Health Organisation's based water quality objectives; namely, iron < 0.5 mg/l, colour < 15 Hazens, turbidity < 5 NTU and zero coliform at the point of use (a consequence of having both a free chlorine residual of 0.2-0.4 mg/l at the point of transmission and an integral distribution system).

Based on a 20 year design life (2004-2024), the proposed project comprises the following elements:

• The drilling of one new well at Lima;
• The construction of a gravity-type treatment plant at Lima including aeration, ph adjustment, oxidation,
filtration and disinfection;
• The construction of a nominal capacity 1650 m3 ground level storage reservoir at Lima;
• The construction of a booster pump station, chemical storage, electrical panels and installation of
stand-by generator;
• Installation of gate, check and air valves throughout the system in appropriate locations;
• Construction of an 18.2km long 200mm diameter transmission main;
• Rehabilitation of existing distribution network;
• Installation of flow-meters at appropriate locations (to form dmas);
• Provision of domestic flow meters for all customers within project area;
• Design and supervision.

The total estimated cost, including 9% for scope variation, 5% for price variation, and 10% for project design, management and supervision is US$ 3.88m.

Particulars of Projects for Division #2:

The project area extends from De Kinderen to St. Lawrence inclusive of both villages, taking in the primary population centre of Parika. The projected 2024 population covered by the intervention is 22,369, generating an average water demand of 4.03 MLD.

The objectives of the project are to provide continuous supply, with a minimum pressure of 7m (10 psi) at the extremity of the distribution system, to reduce UfW to 25% of supply, and meet the World Health Organisation's based water quality objectives; namely, iron < 0.5 mg/l, colour < 15 Hazens, turbidity < 5 NTU and zero coliform at the point of use (a consequence of having both a free chlorine residual of 0.2-0.4 mg/l at the point of transmission and an integral distribution system).

Based on a 20 year design life (2004-2024), the proposed project comprises the following elements:

• The drilling of one new well at Vergenoegen and developing the existing well at Vergenoegen;
• The construction of a gravity-type treatment plant at Vergenoegen including aeration, ph adjustment,
oxidation, filtration and disinfection;
• The construction of a nominal 1950 m3 capacity ground level storage reservoir at Vergenoegen;
• The construction of a booster pump station, chemical storage, electrical panels and installation of
stand-by generator;
• Installation of gate, check and air valves throughout the system in appropriate locations;
• Construction of 9.7km of new transmission mains, of which 6.9km would be 250mm in diameter and
2.8km would be 200mm in diameter, linking to 9km of existing pipelines;
• Rehabilitation of the existing distribution network;
• Installation of flow-meters at appropriate locations (to form dmas);
• Provision of domestic flow meters for all customers within the project area;
• Design and supervision.

The total estimated cost, including 9% for scope variation, 5% for price variation, and 10% for project design, management and supervision is US$ 4.01m.

Particulars of Projects for Division #4

The project area extends from Shieldstown to Inverness inclusive of both villages, taking in the primary population centre of Rosignol. The projected 2024 population covered by the intervention is 14,456 generating an average water demand of 2.60 MLD.

The proposed targets of the intervention are to provide continuous supply, with a minimum pressure of 7m at the extremities of the distribution system, to reduce UfW to 25% of supply, and meet the World Health Organisation's based water quality objectives; namely, iron < 0.5 mg/l, colour < 15 Hazens, turbidity < 5 NTU and zero coliform at the point of use (a consequence of having both a free chlorine residual of 0.2-0.4 mg/l at the point of transmission and an integral distribution system).

Based on a 20 year design life (2004-2024), the proposed project comprises the following elements:

• The drilling of one new borehole at the proposed site of the treatment plant, and redeveloping the
existing well at Rosignol;
• The construction of a gravity-type treatment plant at Rosignol including aeration, ph adjustment,
oxidation, filtration and disinfection;
• The construction of a nominal capacity 1250 m3 ground level storage reservoir on the same site as the
treatment plant;
• The construction of a booster pump station, chemical storage, electrical panels and stand-by generator;
• Installation of gate, check and air valves throughout the system in appropriate locations;
• Construction of an 8.5km transmission main of 200mm to 300mm diameters;
• Rehabilitation of existing distribution network;
• Installation of flow-meters at appropriate locations to create (dmas);
• Provision of domestic flow meters for all customers within the project area;
• Design and supervision.

The total estimated cost, including 9% for scope variation, 5% for price variation, and 10% for project design, management and supervision is US$ 3.15m.

Status of Project Components
-Procurement of Works

-Design and Construction of Water Treatment Plants
The contract has been awarded to UEM-GEM Inc of Trinidad and Tobago on 28 December 2007 for the sum of US $ 6,391,508. These plants are scheduled to be completed by August 2009.

Well Drilling
Drilling of the new well at Cotton Tree has commenced on November 15, 2007 and is around 70% completed. The wells are originally scheduled to be completed by February 2008. The contract sum is
US $ 500,000

Transmission Main
This contract is to be awarded for the sum of US $ 2,391,292

-Distribution Systems Upgrade - Lot 1
The Contract for Distribution Upgrades in Walton Hall to Queenstown in Essequibo Coast was awarded to S. Jagmohan Hardware Supplies and Construction Services on

-Procurement of Services
Supervision of the Construction of Water Treatment Plants and Installation of Transmission Mains
The evaluation process for this contract is presently being conducted

-Procurement of Goods
Procurement of Materials for Revenue Metering Service Connection – Lots 1 and 2
The total sum for this contract is US $ 1,108,900