Engineering nightmare

[Luka Milicevic]

Hello BP nation.

It would be my luck that the first off market deal I put under contract that I got from direct mail would be an engineering nightmare. 

This is for a new construction and we have an issue with the sewer and storm water system. My partner on this deal built the house across the street and told me to go to city water services because he had issues with where the sewer lines were located. It turns out my lot is even more of an issue. 

The sewer line (shown in green) is very close to the storm water stream (shown in red). They are not quite on top of each other but are relatively close. My city has a 10ft easement on sewer lines and storm water will require me to build infrastructure to have the water flow along that line. As of right now it's just a muddy stream. I knew this going in, although I didn't think the sewer line was that close! 

Here is where the challenge comes in.....

Between the subject parcel (Parcel 028.00) and the one directly across (6214) there is a small alley road. Property 6214 has an engineered storm water stream along the side of the property which is exactly what I would have to build along the side of my property. The city said that I can't have the water just flow from my stream onto the alley road and hope it reaches the next property's stream. They said there has to be some sort of infrastructure between them in the form of a pipe. Well, you can always throw money at things when you hear about unexpected issues, however; the problem is where this storm water pipe needs to go, there is a sewer pipe directly perpendicular! This is the big issue. How do I connect the two engineered streams with a pipe when there is a sewer pipe in the way? 

You can see the mess circled in blue pen. The city storm water person that helped me was baffled at how this was going to be resolved and said I had to speak with an engineer because she didn't think a solution was even possible. I am still in the due diligence phase and I have a few days left. I would love to have this resolved pretty soon and I'm looking for advice, if anyone has run into these sorts of issues before. I can't close on this property if this is something that can't be resolved. Any help would be greatly appreciated.

[Patrick Liska]

These are trench drains, picture shows grates on it, you can get them with flat plates as well.

as far as the site elevation, usually the heights will be represented in feet like this drawing, see the 833.39 ( represents highest point) next is 831.51 then 829.64, this shows the sewer line pitches down. they also have here by the 833.29 the number 834.56, that's the grade of the road way, even though the two numbers are not next to each other, it could be assumed the storm drain is one foot lower than the road way ( 834 - 833 )