The Zoning Hearing Board in Hatfield Township has granted the North Penn Water Authority a height variance that allows it to put up a water storage tank near Unionville Pike and Richmond Road not far from the municipal garage. The tank would have a capacity of three million gallons and stand more than 150 feet tall. That's almost four times higher than what the zoning ordinance permits without a variance. The Zoning Hearing Board decision only addresses the height issue. The project still needs the review of the Hatfield Planning Commission as well as the approval of the township commissioners.