MARGAO: The Goa Coastal Zone Management Authority (GCZMA) has approved the proposal to construct the Cacora Sewage Treatment Plant (STP) in Quepem taluka. However, this approval comes with a unique condition aimed at environmental preservation. The authority has mandated that the Sewerage & Infrastructural Development Corporation of Goa Limited (SIDCGL) collaborate with the Mangrove Society of India (MSI) to undertake mangrove plantations as a compensatory measure for the mangroves affected by the STP construction.
It may be recalled that SIDCGL had initially approached the GCZMA for clearance earlier this year, prompting an onsite assessment by expert members of the authority. The inspection revealed that the proposed STP site spans an area of 5,725 square metres, predominantly falling within the CRZ-IA zone as per the 2011 Goa Coastal Zone Management Plan. Notably, this designation signifies the area as a crucial mangrove buffer and salt marsh zone.
While the project aligns with the permissible activities under CRZ norms, the GCZMA has specified certain prerequisites for its approval. These include obtaining consent from the Goa State Pollution Control Board (GSPCB) under the Water (Prevention and Control of Pollution) Act, 1974, and conducting a dispersion modeling study for treated sewage discharge.
Furthermore, the GCZMA has mandated seeking approval from the Water Resources Department (WRD) for stormwater management and drainage plans. Additionally, mangrove plantation efforts must be undertaken in consultation with either the MSI’s Goa unit or the Goa State Biodiversity Board (GSBB).
Envisioned to encompass a power substation, administrative building, chlorine tonner house, pump house, and security cabin, the STP project is expected to occupy an area of approximately 1,000 square metres. However, the GCZMA inspection team in their report, have highlighted the potential need for an environmental impact study and assessment of mitigation measures.
Moreover, concerns have been raised regarding earth filling activities, particularly in proximity to existing filling for nearby road construction and the bridge spanning over the backwaters. The GCZMA’s expert members advocate for a thorough evaluation of the monsoon water disposal plan to address potential implications.
