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Melanie Curtis From: Jesse Struve Sent: Friday, March 29, 2013 3:12 PM To: 'deanjohnsonhomes@gmail.com'; 'toddholmers@gmail.com' Cc: 'SChristopher@minnehahacreek.org'; Melanie Curtis; Jessica Loftus; Correy Farniok; Soren Mattick; 'Steve.Groen@co.hennepin.mn.us' Subject: 20130329 1545 Maple Place Erosion Control Issues Attachments: 100_1316.JPG; 100_1317.JPG; 100_1323.JPG Dean and Todd, The City of Orono received a complaint regarding the erosion control at 1545 Maple Place. I performed a site visit this afternoon and there are significant issues regarding the erosion control on the site. Attached are a few photos showing the existing conditions including photos showing North Arm. Due to no or improper erosion control at the site, a stop work order was issued today (3/29/13)at 1:40pm. No work will be allowed to take place on the site until all the necessary work is corrected, but there are issues which need to be addressed in the next 24 hrs or the City or Minnehaha Creek Watershed District(MCWD) will take corrective action. Any work performed by the City or MCWD will be billed directly to your company and if no payment is received, all costs will be deducted from existing escrow funds. Furthermore, it appears the contractor damaged the existing City culverts which drain north to North Arm and the culvert which drains the proposed swale in the rear yard. These culverts will need to be inspected and corrected prior to any work taking place on the site. The corrective measure can be broken down into two categories as follows: Item needed to be corrected in 24 hrs: • Proper Erosion control installed. This will include the proper installation of biorolls or silt fence to maintain sediment on the site. Also inlet control measures need to be installed around the three culvert outlets to prevent sediment from being discharged to North Arm. Items needed to be corrected before work is initiated at the site: • The removal of all building materials from the City's right of way. • Street sweeping of Maple Place, Cherry Avenue, and portions of Hennepin County's North Shore Drive. Hennepin County is copied on this email and will give direction as to how much sweeping is needed on their roadway. • The installation of a rock construction entrance to City standards. • Cleaning of all three City culverts without allowing sediment to reach North Arm. • Inspect all three City culverts which drain to North Arm for damage. I will require you hire a contractor to do a televising inspection to determine if any damage was done to the pipe and any damage will need to be corrected. A City representative will determine the extent of the damage and what corrective measures will need to take place. • Inspect the culvert(televising) which drains west to the rear drainage swale and correct any damage to the pipe. A City representative will determine the extent of the damage and what corrective measures will need to take place. • Any other corrective measure Hennepin County or MCWD require. I can be reached directly at 952-249-4661 or at Istruve@ci.orono.mn.us with any questions or concerns. Jesse Struve, PE Director of Public Works/City Engineer City of Orono 1