C&B Drainage Contracting Ltd completed public stormwater and wastewater infrastructure works for a five-lot residential subdivision in West Harbour, Auckland. The project involved the construction of multiple manholes approximately 5 metres deep. Due to the excavation depth, trench shoring systems were used to ensure excavation stability and worker safety. All works were completed safely and complied with Auckland Council and Watercare standards. The project required careful planning and safe construction practices due to the deep excavations.