SU0004916 - Laserfiche WebLink

Home Browse Search

Mountain House Specific Plan III — ........................................................................................................................................................................... 15.4 Secondary Storm Drain Collection System - 15.4.1 Master Plan Summary The Master Plan requires that on-site drainage occurring over the community be safely conveyed by the secondary storm drain collection system to the primary storm drain collection system. The secondary storm drain collection system shall be used to collect and convey on-site drainage to the primary storm — system safely with adequate flood protection. The design and construction of the secondary storm drain collection system shall be based on the 10-year storm event. 15.4.2 Specific Plan III Description The secondary storm drain collection system is primarily located within the local and collector streets and consists of local private property BUT site collection and conveyance facilities, localized drainage _ swales, street gutters, field inlets, catch basins,catch basin laterals and underground pipes. These facilities transport on-site drainage to trunk lines or to water quality basins. The secondary storm drain collection system will be designed and constructed per the requirements of the MHCSD. 15.4.3 Implementation Measures a. All storm drain improvement projects shall comply with the MHCSD Development Standards. 15.5 Mountain House Creek Improvements 15.5.1 Master Plan Summary — The Master Plan requires that Mountain House Creek be developed as a multi-use corridor for conveyance of off-site and on-site drainage through the community and for a wildlife habitat and recreation corridor(see Chapter Seven for recreational and park requirements).Mountain House Creek shall be used as an open channel to convey off-site and on-site drainage through the community with — adequate flood protection. The creek shall discharge into Old River,but the deposition of sediment into the river shall be minimized by causing sediment deposition to occur in the Mountain House Creek _ channel.Mountain House Creek shall be designed to minimize erosion. 15.5.2 Specific Plan III Description Mountain House Creek, constructed as part of Specific Plan I,was designed and constructed according to _ the design criteria contained within the Community Approvals,as well as a Nationwide 27 Permit issued by the United States Army Corps of Engineers under the Federal Clean Water Act. These improvements were sized to convey the 100 year storm event. 15-6 Draft 03/14/05 ...........................................................................................................................................................................