Drainage & Domestic Water Design Review

I have a commercial office scheme spread across nine storeys that is already 80–90 % engineered. What I need now is a sharp set of eyes on the public-health side to close everything out before close of play Wednesday 15 July... (Budget: £250 - £750 GBP, Jobs: AutoCAD, Building Design, Drafting, Engineering Drawing, Mechanical Engineering, Project Management)