used). In Overflow Overflow Overflow Unknown on on cold finished finished discharge climates, integrity of Tank Tank use storage of a tank Tank Tank water storage on tank flapper or storage finished discharges tank [add Does Does duckbill at water improper Is Does the is other directly valve should the the the drain storage height*. connected inaccessible tank (see to be photo considered #) a components sanitary to minimize to sewer, needed*. line have air (see combined movement photo #) for Overflow consolidate and hence ice an must sewer language]. be or formation in air over storm sewer piped Overflow to an no an the tank. In gap elevation must drain. (see The sanitary less cold climates, of inlet 3 photo #) between discharge surveyor 12 was than or provisions and over 24 a inches unable to 12 should be more above the No evaluate drainage overflow the inlet considered to pipe ground structure, may be tank drain but prevent the surface splash plate, and [add directly other flapper or no plate, or discharge connected components engineered to or more duckbill from over rip-rap. a a to sanitary than freezing shut. the sewer, drainage consolidate], inlet 24 structure, combined and the water splash plate, sewer system or was to or storm engineered sewer not able to any rip-rap. drain. produce An air the gap must be or present of the such that condition the of overflow these pipe components. terminates Each item at that least could three not pipe be inspected during diameters the above sanitary the ground level survey must at be the inspected sewer or and storm the drain, or over a splash must pad. be compared to the enclosed Tech Tips for Finished Water Storage Facilities to determine if corrective action is needed.
used). In cold climates, use of a flapper or duckbill valve should be considered to minimize air movement and hence ice formation in the tank. In cold climates, provisions should be considered to prevent the flapper or duckbill from freezing shut. Does the line no less than 12 but no more than 24 the Overflow on finished storage tank discharges at improper height*. (see photo #) Overflow must be piped to an elevation between 12 and 24 inches above the ground surface and discharge over a drainage inlet structure, splash plate, or engineered rip-rap. Does the over an inlet plate, or Overflow discharge on finished water storage tank needed*. (see photo #) Overflow must discharge over a drainage inlet structure, splash plate, or engineered rip-rap. Does the have an air gap of 3 or more pipe the to any or Overflow on finished water storage tank is directly connected to a sanitary sewer, combined sewer or storm sewer drain. (see photo #) No overflow may be directly connected to a sanitary sewer, combined sewer or storm sewer drain. An air gap must be present such that the overflow pipe terminates at least three pipe diameters above the ground level at the sewer or storm drain, or over a splash pad. Is the drain for Unknown integrity of storage tank [add other inaccessible components to consolidate language]. The sanitary surveyor was unable to evaluate the tank drain [add other components to consolidate], and the water system was not able to produce of the condition of these components. Each item that could not be inspected during the sanitary survey must be inspected and the must be compared to the enclosed Tech Tips for Finished Water Storage Facilities to determine if corrective action is needed. Tank Tank Tank Tank
ss_wyoming_form.docx