Aug-2026-0003: Technical Assistance Service To The Optional Management Of The Sanitation And Purification Work In The Rural Area Of ​​Ferrol. Phase 1A. Ferrol (A Coruña) - Work With File Reference Aug-2025-0151 And Project Code Oh.315.1307. Action Co-Financed By The European Union With The European Regional Development Fund (Erdf) At 60% Of The Eligible Expenditure Within The Framework Of The Galicia Feder Program 2021-2027.