5.2. PCSR 09-15-2009 - Laserfiche WebLink

Home Browse Search

• Drainage collects along the fire lane on the west side of the building and flows around to the retaining wall location. A spillway or pipe will be needed to convey this drainage to the bio retention pond. • Grades at the rear of the building are significantly lower than the patio/decks. No access to the ground at the rear of the building from these units will be possible. • The original wetland delineation report for this project needs to be resubmitted relative to the wetland boundary on this lot. Prior to any work being done on this lot, the wetland boundary originally delineated needs to be reestablished and verified by the city's Environmental Division. • After grading and construction of the bio retention pond adjacent to the wetland on the north side of the lot, a 25-foot width measured from the wetland edge, needs to be planted in native plantings. Recommendations for planting materials can be obtained from the Soil and Water Conservation District. At the edge of the 25-foot planting, wetland buffer signs according to the city's ordinance need to be installed. • The construction sequencing needs to be done in a manner to protect the bio retention pond area from sediment washing into the area, as well as compaction from construction equipment. The area should be protected with fencing prior to construction and with silt fence immediately after constnuction. • The grading appears to involve a significant amount of export. Construction traffic on 172°d Avenue needs to be limited to that portion between Twin Lakes and the construction driveway. C. Utility Plan • The sanitary sewer service seems excessively deep. • A sampling manhole 48 inches in diameter needs to be placed on the sanitary sewer service. • Add an 8" gate valve to the water service line. • A review by the city's Fire Department has determined that the hydrant at the northeast comer of the building is not necessary and can be replaced with a hydrant located in the parking lot median immediately opposite the water service into the building. • How is the roof drainage routed? Are roof leaders connected directlyto the storm sewer? • It appears that there are existing small utilities in the area of the proposed driveway which may cause conflicts with the driveway and/or proposed storm sewer. D. Erosion and Sediment Control • The site is large enough that it will require a NPDES permit. A copy of the permit once obtained, must be provided to the city. • A Storm Water Pollution Prevention Plan (SWPPP) must be submitted and approved for the site. The SWPPP must be in an 8 '/z" x 11" format with a page for the signatures of the owner, engineer and contractor. • No grading may begin on the site until a signed SWPPP and a copy of the NPDES permit have been provided to the city, as well as an initial inspection of the perimeter erosion control measures and rock driveway construction has taken place and been approved. S:\PLANNING MAIN\Case Files\SP\SP 08-06 ER Station Apts\03-10-08 engis comments.doc Page 2