AgdaPkt 2002-09-23 - Laserfiche WebLink

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There are some possible adverse affects to this water. One of the first symptoms is buming of the foliage along the edges of the leaves. Foliar spotting can occur if there are bicarbonates in the water. Another effect can be a decrease of water movement in clay soil. The pH level will rise over time as the water is used and can cause iron deficiency symptoms in sensitive plants. A higher level of salts can cause a physiological stress in plants and can make it more sensitive to insect and disease problems. The key points to be considered are the quality of the water, what plants exist there, what type of irrigation delivery systems will be used, and the site conditions. The sites well suited for recycled water are turf areas because as the turf grows from the bottom, the salts rise and get mowed off. Established trees and shrubs that do not need frequent irrigation are a good use. Species that are not sensitive to salt are well suited as well. Salt sensitive plants and a situation where prime plants exist may not be suitable for recycled water use. Poorly drained areas, high clay or high level pH or salt soils would not be suitable. There are some continuing management concerns to be addressed. Irrigation should be heavier, gypsum or sulphur compounds can be added to counteract as the sodium level increases. The fertilizer program can be decreased by 25% and irrigation frequency can be increased so that the salts do not become more concentrated as the soil dries out. Monitoring of the salt concentration and pH content in the soil affects the plants. She closed with encouraging consideration of the horticulture aspects in the feasibility study and stated that planning the design appropriately should avoid problems in the future. C. Water Supply Assessment for the proposed Marina Shores Village Project; Public Works Services Director Ingram summarized the findings of the Water Supply Assessment (WSA). He stated that the law is specifically tied to the environmental review process and as such, the WSA document is very early in the process. He stated that the Council action is to simply approve the WSA and that Council is not acting on the project in any way. Mr. Ingrain summarized the analysis as the City of Redwood City does not currently have sufficient water supply to meet the. projected water demands of the proposed Marina Shores Village Project together with those of its existing customers as well as the demands of other planned development. He further stated that if the City implements tentative plans for additional supplies in the near future, there should be sufficient water supply to meet projected future demands. The City's supply reliability now and into the future is a key factor in this determination. The WSA is required by law and paid by through the Enterprise Fund with developers bearing the cost. REGULAR COUNCIL MEETING AUGUST 26, 2002 MINUTES PAGE 9