01/31/2001 Env Bd Packet - Laserfiche WebLink

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AGENDA ITEM 1 - 03 STAFF ORIGINATOR: Marty Asieson DATE: Summit Fire Protection TOPIC: Site Plan and Minor Subdivision Application Review BACKGROUND: The site plan for this area was reviewed at the June 28, 2000 Environmental Board Meeting in conjunction with the Marmon Keystone project. Marmon Keystone is an approved project that is currently under construction and is located immediately to the East of the Summit Fire site proposal. Summit Fire is located on what is platted as parcel F. At the June 28,2000 meeting, existing excavated areas-that could serve as infiltration ponds were discussed. Pond 1 is the pond that is on the SW corner of this commercial development area and in the SW corner of this property. Virtually all of the surface water drainage for the Summit site will go to this pond #1. This is exactly what was discussed on June 28th. Project engineer John Johnson has created additional swails to slow and infiltrate the water from this site. Pond 1 will also take the water drainage from 2 acres on the parcel to the north. - As noted from the submitted infiltration checklist sheet, water from roofs will be directed into storm pipes feeding directly into two constructed infiltration basins. Curb and one catch basin in grass area will be directed to infiltration basins. Soil compaction is indicated to be 95% (engineering standard for settlement assurances). I have talked to John Johnson about this and John will write a spec for the vegetation growth areas that would reflect the soils are no higher in density than 1.7 grams per cubic centimeter. This is the limiting soil bulk density for plant growth in fine. sand soils. The landscape plan reflects the standard that seems to be acceptable in the business district. That is, irrigated turf in the front and native materials in the drainage areas. We have in the past asked for a maintenance contract to be signed with a company knowledgeable in native plant culture, for the areas that have these native plant areas. OPTIONS: • Change soil specs in growing areas to reflect less than the 1.7 G /cu cm. • Require native plant maintenance contract. • Require a few native flower gardens in front area. This is consistent with other commercial sites where native flowerbeds have been planned.