CCP 10-30-1995 - Laserfiche WebLink

Home Browse Search

.. Mr. Dwayne Stafford .- October 2, 1995 Page Two . In the past, the City has briefly considered abandoning Lift Station Number 6, and . installing individual pumps in the homes to lift the wastewater into the gravity line on Lake Johanna Trail. This option would eliminate the need for the collector line (lakeshore line) located between the existing homes and the lake. Access to the lakeshore line for . maintenance is poor at best, but City personnel indicate that there have been some minor root problems, but generally, the line runs reasonably well. During our brief inspection, . there was very little flow in the lakeshore gravity line, so it does not appear to have an infiltration/intlow problem. The existing gravity line on Lake Johanna Trail is located on the west side of the street, . opposite the homes to be serviced, so each individual forcemain would have to run under the paved road to the collector line. I As an alternate, we would recommend consideration of an option to modify the existing lift station. The structure could be modified to house twin submersible pumps with electrical I controls mounted in a panel above the ground. The electrical controls would be in an above ground water proof panel roughly 2 feet by 3 feet in size located on a short pedestal. Shrubs could be planted around the panel to screen it from the residents and the lakeshore . I if necessary. If this alternative appears reasonable to the City Council and the operations personnel, we . would suggest that quotes be requested directly from two or three pump suppliers without detailed plans and specifications. The site conditions and the equipment set up and design I are quite unique, and we would anticipate each supplier to have a somewhat unique approach to the corrective action required. We would be available to assist in the preparation of the documents to request quotes and I review the submittals as they are available. In regard to the other lift stations, we would suggest that the current maintenance program . continue with one or two added features. It would be helpful for future reference if a record was made of each inspection and the findings of the inspection work. Some of the I dry wells have heaters or dehumidifiers that are not operating. An inventory of each station with inspection of the dehumidifier, heater, lights, ventilation, sump pump, etc. may identify some minor equipment needs. . In the course of completing the Comprehensive Plan, we may encounter additional needs . at the lift station locations. However, at this time, it appears that the most significant problem is the situation at Lift Station Number 6. . I 5201060-020J,oct .