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I I I I I I I I I I I I I I I I I I I APPENDIX B ORDINANCE #89-21 CITY OF RAMSEY ANOKA COUNTY STATE OF MINNESOTA AMENDMENT TO CHAPTER 150.01 KNOWN AS THE SEWAGE DISPOSAL SYSTEMS CHAPTER OF THE CITY CODE. AN ORDINANCE AMENDING SECTION 150.01 OF THE CITY CODE. The City of Ramsey Ordains: SECTION 1. AMENDMENT. Section 150.01 of the Ramsey City Code pertaining to on-site treatment systems is amended to read as follows: 150.01.4E DOSING DEVICES FOR PRESSURE DISTRffiUTIONS. 1. The dosing device shall be a pump which is cast iron or bronze fitted and with stainless steel screws or constructed of sound, durable and corrosion-resistant materials. 2. The pump discharge capacity shall be at least seven and one-half gallons per minute for each 100 square feet of soil treatment area. 3. The pump discharge head shall be at least five feet greater than the head required to overcome pipe friction losses and the elevation difference between the pump and the distribution device. 4. The quantity of effluent delivered for each pump cycle shall be no greater than 25 percent of the one day's sewage flow. 5. An alarm device shall be installed to warn of pump failure. 6. A siphon will not be allowed as a dosing device to deliver effluent to a pressure distribution system. 7. The dosing chamber for a pressure distribution system shall eitherinclude a two pump system or shall be sized to include a minimum reserve capacity of 75 percent of the daily design flow. Section 150.01.4H of the Ramsey City Code pertaining to alternative treatment systems in the urban service areas is amended to read as follows: ' 150.01.4F. FINAL TREATMENT AND DISPOSAL - STANDARD SYSTEM. Final treatment and disposal of all sewage tank effluent shall be by means of soil treatment and disposal. SUBDIVISION 1. SIZING 49