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ATTACHMENT "A" (13) The maximum water usage rates for "water conserving households" identified by the American Water Works Association, "Residential End Uses of Water"; (14) A total of forty five (45) gallons per person per day; (15) A total of one hundred fifty (15 0) gallons per dwelling unit per day. (C) The Water and Wastewater Service Plan shall include a standardized design for a rainwater harvesting system, prepared by a Texas licensed professional engineer, using design parameters applicable to the location of the Subject Property. This standardized design shall be based on a prototype representative of actual conditions anticipated to be present in the proposed development, including typical structure sizes and materials of construction. The standardized design shall include schematic plans, drawings and descriptions for the various component parts of the prototype system, and shall include any minimum requirements (e.g. minimum storage tank sizes) and appropriate adjustment factors to be used for each component to account for the range of differing sizes and configurations of structures anticipated to be present in the proposed development. (D) The Water and Wastewater Service Plan shall include a standardized operations and maintenance plan for a rainwater harvesting system, prepared by a Texas licensed professional engineer. This operating and maintenance plan shall be based on the prototypical design and shall describe in detail the operating and maintenance requirements for each component of the prototypical rainwater harvesting system. (E) The Water and Wastewater Service Plan shall clearly identify any water conservation measures and use limitations used in estimating the water demand and shall include the provisions to be utilized to ensure that the end users of the rainwater harvesting systems are aware of the need to follow these restrictions. (F) Where rainwater harvesting constitutes the sole source of water supply for the development, the Applicant shall incorporate sufficient restrictions (including deed restrictions and plat notes) into the development documents to ensure that subsequent owners or users of the property do not install or utilize groundwater wells, until an updated water availability demonstration is approved documenting sufficient groundwater is available.