Cultus Lake Park Sanitary Sewer Infrastructure Assessment

Fraser Valley Regional DistrictCultus Lake Sanitary Sewer Infrastructure Assessment – Final Report9.0 Conclusion and Recommendation9.1 Conclusion• The existing disposal fields do not have the capacity to accommodate future flowrates• Implementing secondary wastewater treatment at Cultus Lake represents aconsiderable capital and operating costs.• Upgrading of the treatment plant in future represents a substantial cost comparedwith constructing a pumping station and sending the flow to the City of Chilliwackfor treatment.9.2 Recommendation• Pursue the pumping option as the ultimate option for Cultus Lake.• In the short term, if there are no available funds to construct the pump stationand the forcemain. Implement all recommendations identified in Dayton andKnight’s Report titled “Cultus lake Sewer Assessment” and all the work requiredby the Permit which includes: constructing monitoring wells for the east and westfields. The suggested location of the wells is identified in Appendix E. Thepriority of the construction work should be as follows:o Construct the required groundwater monitoring wells ($19,800)o Calibrate or replace existing flow meters ($30,000)o Repair of the distribution boxes and outlet tees ($20,000)o Replace existing corroded SL3 pumps ($ 45,000)• Limit any connection of additional sources of discharges to the disposal fieldsuntil all work prescribed in the Dayton and Knight Report is completed accordingto the MoE Permit 5526, issued 1979 and amended 2011.• Monitor the groundwater water monitoring wells as required by the Permit, untilconstructing the pump station and forcemain and decommissioning the existingdisposal system.Project No. 30825 – September, 2012 Page 29