dicksewerrat,
That's the only real solution we found, even though it'll cost a little more. We were trying to avoid tying a SW pond outfall pipe in to a blind junction box downstream in the highway. The nearest visible junction was a curb inlet slightly upstream. But we'll just add a junction...
I know if you have an mainline urban pipe system, running/flowing a certain directioning down a highway, SW pipes connecting in from sites should be bearing the same direction, being perpendicular at worst. Is there much tolerance for the tie-in pipes being off-perpendicular in the other...
