High water table limitations overlay district
(a) District defined. This [high water table limitations overlay] district is composed of areas in which the water table is within three feet below the surface of the ground for significant periods of the year, creating moderate to severe limitations for subsurface development. In high water table limitations overlay district "A," the water table is generally within 18 inches of the surface of the ground. Areas included in district "A" are designated on the environmental inventory soils maps with the following symbols: Aa, Co, Mk, Re, Rc, Rf, Sb, Se, Sf, Wa, Ma, Me, Mc. In high water table limitations overlay district "B," the water table is generally between 18 inches and three feet below the surface of the ground. Areas included in district "B" are designated on the environmental inventory soils maps with the following symbols: Bc, Nt, PmA, PmB, PnB, RaA, RaB, RbB, StB, WbB, WhA, WhB, WoB, StB, Ss, Tb.
(b) Prohibited uses. Underground fuel storage tanks are prohibited in districts "A" and "B."
(c) Special review uses. The building inspector may issue a permit for in-ground swimming pools and basements in districts "A" and "B," provided the applicant submits detailed plans and an accompanying statement stamped by a registered professional engineer certifying that all applicable development standards have been met by the proposed development plans. The engineering department shall review all state approved individual sewage disposal systems in districts "A" and "B" to ensure they are properly distanced from all water and sewer lines and that they will be properly graded so as to not allow an increase in storm water runoff onto neighboring properties. The planning department shall review all state approved individual sewage disposal systems and associated architectural plans in districts "A" and "B" to ensure that the number of bedrooms that the system is designed for cannot be exceeded.
(d) Development standards. Any proposed basement or in-ground swimming pool in high water table limitations overlay district must comply with the following development standards, in addition to all other applicable requirements of this ordinance:
(1) The design of the subsurface structure or system minimizes the problems and hazards created by the high water table;
(2) The high water table will not damage or interfere with the proper functioning of the subsurface structure or system;
(3) The subsurface structure or system will not pose any threat to public health or safety or to the water resources of the town.
(e) Site coverage standard. Structures, paving, and other impervious surfaces shall cover no more than the following percentages of the area of any lot in a high water table limitations overlay district:
Zone District/Use Maximum Site Coverage
(percent of lot area)R-80 Residence 9 R-40 Residence 13 R-20 Residence 17 R-10 Residence 22 R-10A Residence 22 B-A Business 43 B-B Business 43 B-C Business 43 I-A Industrial 43 I-B Industrial 43
In case of legally created dimensionally substandard lots of record, the maximum percentage of lot coverage shall be adjusted according to the ratio of the substandard lot to the minimum lot size in that zone. In case of lots in cluster subdivisions the maximum percentage of lot coverage shall be adjusted to conform to the standards for the zoning district nearest in area requirement to the actual area of the cluster lot in question.
(Ch. 811(1), § 1(4.5), 3-4-2002; Ch. 894, § 5, 11-5-2007; Ch. 1016, § 9, 5-2-2016; Ch. 1090, § 1, 2-22-2022; Ch. 1118, § 2, 12-18-2023)