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11. Ice and water shield: required on all shingled roofs — eaves only. <br />Shields must extend from the lowest edges to a point at least 24 inches inside the <br />exterior wall line of the building. <br />12. Drip edge: required on both eaves and rakes of roof. <br />13. Air freezing index: less than 1000. <br />14. Mean annual temperature: 47 degrees. <br />15. Elevation: 5,337 feet above sea level. <br />16. Sump pumps: <br />a. Cannot drain into sanitary or storm sewer; <br />b. Must daylight into lawn away from foundation; <br />C. Perimeter foundation systems must drain into sump pit and <br />then sump pump, and sump pump must drain into lawn. <br />17. Drainage from house: slope at least six inches in the first ten feet. <br />18. Retaining walls: <br />a. Less than 48 inches from the bottom of the footing to the top <br />of the retaining wall with no surcharge: no permit required. <br />b. More than 48 inches from bottom of footing to top of <br />retaining wall, or any wall with surcharge: requires stamped engineering plans. <br />19. Backflow preventer: required on all residential irrigation systems <br />(see cross connection control regulations). <br />20. Hot water heaters: <br />a. Expansion tanks required for all hot water heaters; <br />b. Drain pan required if placed on wood floor. <br />See. 15.60.090. Violations and penalties. <br />Ordinance No. 1825, Series 2022 <br />Page 10 of 12 <br />