St. Clair Region Conservation Authority - Environmental Compliance Approval (sewage)

This proposal is for a new Environmental Compliance Approval (sewage) as part of a proposed trailer park expansion of on-site sewage systems serving A.W. Campbell Conservation Area located at 8477 Shiloh Line, in Alvinston, in the Municipality of Brooke-Alvinston, Ontario.

The existing septic system on Site will be replaced by a larger subsurface sewage disposal system to support the existing 146 seasonal trailer sites on the property, where the 112 seasonal trailer lots are proposed to connect to an onsite gravity sewage system. The onsite subsurface sewage disposal system will be divided into two separate raised absorption trench systems.

The north washroom facility will combine sewage flows with 8 seasonal trailer sites, to operate with a total daily flow rate of 9,500 liters per day. The south washroom facility will combine with 104 seasonal trailer sites, to operate with a total daily flow rate of 35,900 liters per day. The daily design sanitary sewage flow is approximately 45,400 liters per day.

The proposed modification to the existing sewage works consist of the installation of:

• a 19,000 litres septic tank at the north washroom treatment system
• a 71,800 litres septic tank at the north washroom treatment system
• pump chambers when gravity flow is not feasible
• dosing chambers
• two raised Class 4 subsurface disposal beds

These proposed works will service the 146 trailer sites located at the Park.