Water and Sewage
Green Blue
Buildings & land use
Project Summary Project Description Application of Tools Opinion of Tools Decision making process Contact Details

Application of tools

Name of the case study
Construction of Municipal Waste Water Collector No 5, Samokov Municipality

Name of tool
Procedure for Criteria Relative Weight Evaluation (Tool used at National Level)

Description of tool - character
The CRWE procedure consists in attributing value (in most cases from 1 to 6 points) to each of the evaluation criteria (12 in total – see Description of project - objectives/aims at the National level) and thus defining its relative importance weight. The criteria values of a project are summarised at the end and projects applying for a grant are ranked according to the overall estimated value.

The value of each criterion is defined by an expert assessment. In this case the experts implementing the procedure were from the Ministry of Environment and Water.

This tool is an assessment method

Description of tool - availability
The tool is paper-based and paid

Description of tool - existing
The tool represents a well-known methodology in the country and could be modified according the specific case.

Description of tool - adaptation
See above.

Name of tool
Technical and Economic Report (TER) + Local Priority Criteria (LPC) (Municipal Level)

Description of tool - character
The Local Priority Criteria (LPC) were developed to complement TER for the purpose of the particular situation – selection between alternatives (construction of collector No.2 or No.5). The particular combination of both (LPC and TER) as an evaluation tool has not been used in other cases or sectors.

The Municipality´s argumentation for choosing Collector No. 5 includes four groups of local priority criteria:
• Degree of project accomplishment – a ready design project within TER;
• High social importance and health:
(1) the current lack of sewage in a residential quarter inhabited by a Roma ethnic minority was expected to cause serious health problems;
(2) the construction of the collector would provide for accomplishing the waste water system of a newly built residential quarter, too;
• Technological requirements to UWWTP:
(1) the collector should discharge additional waste water and should facilitate the efficient operation of the UWWTP;
(2) the construction of collector No5 would be easier than that of collector No2, which would serve the historical centre of the town and would take more time and resources to go through the existing urban fabric.
• Environmental benefits - effectively diminishing environmental risks by reducing river pollution and matching the project indicator for water purity.

The criteria were defined to facilitate the evaluation when choosing between two options. No particular procedure was adopted for the evaluation process.

The construction of collector No.5 started in stage III (2001-2003).

This is a case-specific tool

Description of tool - availability
Paper-based tool.

Description of tool - existing
The tool is based on an existing tool (TER) modified for the purpose of the project.

Description of tool - adaptation
The tool is created by municipal experts.

What tools were used to assess sustainability?

Procedure for Criteria Relative Weight Evaluation (Tool used at National Level)

Technical and Economic Report (TER) + Local Priority Criteria (LPC) (Municipal Level)

More information

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