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� + Melanie Curtis From: James H. Parker[JimP@advsur.com] Sent: Friday, February 04, 2011 4:26 PM To: Darren.Amundsen@bonestroo.com Cc: MSharratt@sharrattdesign.com; Melanie Curtis Subject: 3095 North Shore Drive Attachments: 100495surveytosw.pdf; 100495CityConsultantComments.pdf; 100495code79 7 c 2.pdf I have attached your comments for your convenience and comment as follows on each item in the same order as your comments: We could locate the manholes in the street and if the city has record plans they may show a location for the service to the property line but between the street and the existing home, I don't know how someone would determine where the existing service line is. I also don't know at this point whether they plan to try to reuse the existing service or put in a new one. If they are putting in a new one we could certainly show a new line down the driveway and into the new home and starting at where the service line should be per the record plans. We could revisit the site and locate any trees in the 50 foot overlap area and show them to help evaluate how the proposed grading might impact any trees on the neighbor's property. The current topography does extend to 50 feet from the property lines on both sides. We could provide a little more detail in the relatively flat area in front of the neighbor's garage. I asked the city for a copy of the survey submitted when the home on the lot to the southwest was built(in 1989)and they sent it to me this afternoon. I notice two things: (1)There is a high point shown on their grading plan in the saddle in the driveway in front of the garage and it would be good to determine how that wound up being built. That provides an emergency overflow to the south to a culvert near the neighbor's south line. (2) The topography shown on the grading plan attached by Lot Surveys Company indicates that before this house was built,there was no low spot on our site near the property line but the water just flowed across the site. It may be that there topography was inaccurate or that it was accurate but in the course of building the home,some sand (I understand that the soils on our site are sandy)was borrowed from our site for use as fill on the new home. We can eliminate the retaining wall, it was provided to give some flat area on the rip rap before the storm water entered the lake, but we could extend the pipe down to the 930 contour and eliminate the wall, but the outlet would be very close to the lake. In as much as it is an emergency overflow, water should very seldom flow through it anyway. If the Lot Surveys Topography is accurate,the low area west of the proposed home was created by grading and construction of the home on the neighboring lot 22 years ago and thus is not a wetland. I don't know how a wetland delineator could make any determination until the snow is gone and plants are growing so this would be a major delay for my client. I did provide an emergency overflow on the site by a swale graded toward the lake along the southwest property line on my first version of this plan but in a meeting with Orono, Mike Sharratt, my client tells me that Tom Kellog and Melanie objected to this grading and so I don't know how one would provide an onsite emergency overflow, unless the city's position on this has changed. If the driveway on the neighboring house was constructed as proposed,there should be an emergency overflow in that direction,take a look at the Lot Surveys plan and let me know your thoughts and we could certainly verify how the driveway was built as mentioned above. I would say that storage for two 100 year, back to back events,could not be provided in the small low area especially considering the 2 foot freeboard you requested and the slope needed for flow to the lake. 1