G-2, H-2 - Ordinance 2022-494 - Rezoning Lot 10, Andersen Addition - R-4 to R-4-OPD.doc

February 9, 2022 City of Tiffin Doug Boldt, City Administrator 300 Railroad Street P.O. Box 259 Tiffin, IA 52340 Re: Lot 10 OPD, Andersen Addition Part One Dear Mr. Boldt: We are in receipt of the Hart-Frederick letter dated February 7, 2022. We offer the following in response to city staff comments and concerns. 1. The plans show each 4-unit townhouse to have one 6-inch sanitary sewer service connection. Per City design standards, a single 6-inch service is required for each 2-units or one 4-inch service for each unit of the building. A 6" service for every two units has been added. 2. Based on the comment above, the 8-inch sanitary sewer will need to be extended east to service the entire building. Sanitary has been extended to accommodate the service. 3. The plans show each 4-unit townhouse to have one 2-inch water service connection. Per City design standards, each unit shall have a 1-inch water service connection. All units must be plumbed for individual meters and curbstops. Per conversations with the City we were under the impression that a single service to each building that then split at the side of the building into individually metered lines would be allowable. If this is not going to be allowed please advise. 4. The plans show no fire hydrants along the watermain. Fire hydrants are provided along Forevergreen Road which should be sufficient for fire protection as long as the landscaping allows for the and does not impede easy access to those hydrants. However, this configuration does not allow for periodic flushing and makes maintenance work difficult. Fire hydrants with main line valves should be provided at a maximum interval of 300-feet. The trunk service line has been removed in favor of individual lines from the Forevergreen main to each building.