There is a new structure that was built behind the garage and to the left of the house. Water flows through this area and is building up along the foundation in the front of the unit. It has not entered the unit, but it gets close. After the rain event the water will also pool and saturate the ground. It will overflow the walkway as well. We will be installing a surface drainage system to collect this water and have it removed quickly. The surface drainage system will consist of having catch basins installed on both sides of the walkway. These will be spaced out and installed slightly below existing grade. We will then complete some mild grading around each of the basins so that we can help direct water into the catch basins for faster collection. Each of the catch basins will be tied into the trunk line of the drainage system. The main trunk line will be a 6" S&D solid PVC drainage pipe. It will be installed at a 1% slope which will max out a flow rate of about 375 gpm when unobstruc