ARCHIVED REPORTS_2011-2018 - Laserfiche WebLink

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INVESTIGATION DETAILS N9ame of Investigator: ";c�,��-1'h�-,n C-oo1G— Date of Investigation: QF.Ialifications: CDOIOTOIREHS/Owner/Manager) C) SOURCE: Do the results indicate well is positive for bacteria. Y! COMMENTS If no,go to next section. If yes, inspect each source: Well ID Well ID Well ID Well 1D What is the bacteria count(MNP)for each well?(Is one well positive,which is activated at lower pressure events w/o your knowledge causing the TCR MCL) If Y- system maybe source I Is the wellhead check valve presAnt within three feet of the well head and does for well failing ll it leak water back into the we(l? N If stem f is a source ror system failing The well breathing from other locations, i.e.the Is\,vellhaad vent instailed properly (J-vent&screen, tightly screwed in, well seal, bolts, wGte 'fight, ^ leaks and a the well only breathing through the J vent, when it electrical conduits, turns off? " 6 cracks in the cement ad may be source. Is wellhead seal water tight, electrical box caulked at conduit into well, is the el Seal all openings to conduit without breaks/cracks, and bolts screwed in tightly &water ti ht? be air&water tight Is well head located in pit or is any piping from the wellhead submerged? Y Does the ground surface slope towards well head? Y Is`here evidence of standing water near the wellhead? Y Are there any connections to irrigation, fire, industrial piping that could be int r- connected? (backfiow devices removed, need repair, need to be installed) / Is the wellhead secured to prevent unauthorized access? Does well appear to be tampered with? 'ON —r_~,Vt,V16A � To what treatment plant (type)does this well pump? (GAC, nitrate, C12, Ar) is the surface pad properly installed &water tight 2-feet in all directions of casinq and well casing is at least one inch above surface pad?tel Are there trees located within 50 feet of well, surface roots near well? Y Tree roots grown into the well will cause TCR MCS. If no seal, TC enter into What is the depth and material of annular seal? the tio from rain or irri ation surface water. I Was work done on the well prior to the failures? (sounding the well, install or removal of the pump, chlorine added to the well, new check valve installed) Y Qil must be removed, 1`well has oil lubed turbine pump, is oil on top of water column inside the well I casing washed with casing? Is oil NSA 61 approved? Is oil stored and applied in a clean manner? detergent,flushed,then disinfected to eliminate YlN1N!` bacteria. Has well failed, after repairs and disinfection using AWWA methods to recalculate chlorinated water down the well casing to disinfect above the water table? YG Degradation of casing Has a down-hole camera been used to investigate the well? YPi may cause TCR MCL.