This document is the Arcadia HDS Maintenance Guide. The steps for the maintenance procedure are explained with inspection and cleaning cycles. Storage capacities are included.

One of Arcadia’s advantages is the ease of maintenance. Like any system that collects pollutants, the Arcadia hydrodynamic separator must be maintained for continued effectiveness. Maintenance is a simple procedure performed using a vacuum truck or similar equipment. The systems were designed to minimize the volume of water removed during routine maintenance, reducing disposal costs.

Contractors can access the pollutants stored in the manhole through the manhole cover. This allows them to gain vacuum hose access to the bottom of the manhole to remove sediment and trash There is no confined space entry necessary for inspection or maintenance. The entire maintenance procedure typically takes 2 to 4 hours, depending on the system’s size, the captured material, and the vacuum truck’s capacity.

Periodic inspection is needed to determine the need for and frequency of maintenance. You should begin inspecting as soon as construction is complete and then on an annual basis. Typically, the system needs to be cleaned every 1-3 years.

To determine the sediment depth, the maintenance contractor should lower a stadia rod into the manhole until it contacts the top of the captured sediment and mark that spot on the rod. Then push the probe through to the bottom of the sump and mark that spot to determine sediment depth.

An Arcadia storage capacities chart with maintenance procedure steps are included.