Description of services for this project includes mapping and obtaining coordinates of 2,450 manhole covers of collection networks and transmission lines and 15,000 sewage branch siphons with a three-frequency GPS device, preparing a 128-kilometer-long map of the building, and determining the diameter and material information of 1,400 manhole covers of sewage collection network lines within the cities covered by Abfa West of Tehran Province, including the cities of Qods, Shahriar, Mallard, and Safadasht.

This project includes various stages such as mapping and obtaining spatial and descriptive information of sewage manholes, determining the material and diameter of sewage manhole covers, identifying and coding subscriber properties, locating siphon locations and assigning subscription codes, drawing branch lines and assigning subscription codes, completing descriptive information of subscriber properties in GIS, completing descriptive information of sewage siphons in GIS, and completing descriptive information of branches in GIS, and is being carried out by these consulting engineers.

The descriptive information of this project is also collected through a data collection system that is designed exclusively for these consulting engineers. The information is transferred online to the server of Sepahan Comprehensive Construction Company and stored on the relevant geodatabase.