PVM Gymkhana
Nariman Point, Mumbai, MH, India
The Environmental Management Plan at PVM gymkhana includes rainwater harvesting, water recycling, vermin-composting and boundary wall plantation. The rainwater-harvesting component provides savings of close to Rupees thirty thousand annually from storage of rainwater during four months of monsoon. In addition, the provision of sump well will additionally provide perennial supply for garden saving nearly Rupees One lakh twenty thousand each year, thus saving nearly forty percent of the annual water bill of Rupees three lakhs.
This component is divided into
two schemes: Schema A which stores rain water from part of the sloping roof
of the gymkhana and uses it for flushing purposes during monsoon; Scheme B
collects water from remaining part of the sloping roof and uses it for
non-domestic purposes, the overflow of this storage is then charged into the
ground through a sump well. The rainwater-harvesting project proposed has a
payback period of 2 years. This component is nearing completion
The water-recycling component proposes to recycle nearly 43,000 liters of
kitchen water to be used throughout the year for gardening purposes. It must
be noted that the gymkhana gardens, which constitute nearly 50% of the plot
area, utilize nearly 70% of the municipal water supply costing nearly Rupees
Two lakhs each year. The water-recycling component will provide savings of
close to Rupees ten thousand each year, and will payback the capital
invested in the recycling system within 5 years.
The Vermin composting component proposes to compost nearly 13 kg of wet
waste every day, which can be used in the garden or even sold commercially.
In order to provide privacy and aesthetics, boundary wall plantation
suggestions include native creepers and fast-growing climbers such as
Madhumalati, Juhi and Ficus pumila.
There are two proposals for solar water heating. The first one is using BIS panels and the second one is using thermoplast panels. The maximum payback period for these systems is forty two months. The capital cost provides 100% income depreciation in the first year. After the payback period, the hot water for the building is free of cost. The system has no maintainance and lasts for 12 – 15 years, depending on water quality.