11/29/2006 Env Bd Packet - Laserfiche WebLink

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• • • Soils are depicted on Attachment 15. The soils are upland, non - wetland types of soils, except where the wetland was delineated in the NW corner. These upland soils are highly permeable and should be used to the extent possible to infiltrate storm water. On the other hand, precautions should be taken with these soils when proposing fueling stations. A fueling site spill containment area should be designed into the plan if this fueling station goes forward. A requirement of this, and every project in Lino Lakes is that no soils are to be imported or exported without City approval. Surface Water Water from this site flows to Baldwin Lake. Contours on Attachment shows elevations generally dropping off to the NW, and channeling through the backs of yards to White Pine Road. The Developer is proposing to route excess water over to Woodridge Lane and than into a wetland complex to the West. This would change the water flow to CD 8 that goes into Circle Pines. In Tight that direct discharge into wetlands may not be allowed in the future, it is important to look at every opportunity to maintain the predevelopment water quantities as possible. Impervious parking areas must be kept to the minimum allowed under our City code. If additional parking would be desired than a form -pave type of pervious parking should be used. Parking lots are draining to catch basins. Instead of the pipe, maybe the design could mirror the HB Fuller model, or the use of ECS, and include a rain garden /infiltration area where the pipe is. These rain gardens could be connected to swales with additional rain - gardens in most areas. The design is using infiltration drain pipe in the pond areas that will infiltrate additional surface water. Drainage swales should have a low profile planting. Parking island bioretention /infiltration (if used), and rain garden areas (if used) should be designed and have a more formal design that is approved by the City. Storm Water Pollution Prevention Plan The approved MPCA, SWPPP must be received and approved by the City prior to a grading permit. This is a separate and distinct document from the detail sheets submitted as part of the application process. This SWPPP must have the responsible manager listed and a 24 hour phone number that this person can be reached. The approved SWPPP should be sent to the environmental, and engineering divisions of the Community Development Department.