Practice Certification Exam for Water Treatment Latest with complete solutions

Practice Certification Exam for Water
Treatment Latest with complete
solutions
1s-scorrectsanswers--
Howsmanyscoliformssamplessaresrequiredspersmonthsforsaswaterssystemsservingsaspopulati
onsbetweens25sands100?

10s-scorrectsanswers--Factorssofswhatsnumberssaresusedsinsthesmetricssystem?

10sfeets-scorrectsanswers--
Thesspacesbetweensthesinnersorsprotectivescasingsandsthesouterscasingsorsdrillsholesshoulds
besfilledswithscementsgroutstosasminimumsofshowsmanysfeet?

10%s-scorrectsanswers--
Asmixturesofsairsandsgassissconsideredshazardousswhensthesmixturesexceedsswhatspercent
agesofstheslowersexplosiveslimits(LEL)?

112,200sgallonss-scorrectsanswers--
Calculatesthesvolume,sinsgallons,sofsastanksthatsiss75sfeetslong,s20sfeetswide,s10sfeetsdeep.

120scubicsyardss-scorrectsanswers--
Asditchsthatsiss4.5sfeetswide,s6sfeetsdeep,sands120sfeetslongshasstosbesdugsforsaswatersline.sH
owsmanyscubicsyardssofsmaterialsmustsbesremoved?

15sfeets-scorrectsanswers--Calculatesdrawdown,sinsfeet,susingsthesfollowingsdata.
-
Theswaterslevelsinsaswellsiss20sfeetsbelowsthesgroundssurfaceswhensthespumpsissnotsinsopera
tion.
-Theswaterslevelsiss35sfeetsbelowsthesgroundssurfaceswhensthespumpsissinsoperation.

15sservicesconnectionssorsovers25spersonssforsovers60sdayssasyear.s-scorrectsanswers--
AccordingstosthesSafesDrinkingsWatersAct,sthesbasicsdefinitionsofsaspublicswaterssupplyssyst
emsissanyswaterssystemsthatssuppliesswatersforshumansconsumptionsthatsserves

15.8sdegreessCelsiuss-scorrectsanswers--
Converts60.5sdegreessFahrenheitstosdegreessCelsius.

2.2smg/Ls-scorrectsanswers--Calculatestheschlorinesdemandsusingsthesfollowingsdata.
-Rawswatersflowsiss0.75sMGD.
-Chlorinatorsfeedsratesiss4.0smg/L.
-ChlorinesResidualsiss1.8smg/L.

, 25smg/Ls-scorrectsanswers--
Whensdisinfectingsasnewsorsrepairedsmain,swhatsissthesminimumschlorinesresidualsatsthesext
remesendsofsthesmainsaftersstandingsfors24shours?

3smonthssofsthesviolationsinsasdailysnewspapersinsthesareasservedsbysthessystem.s-
scorrectsanswers--

AccordingstosthesUSEPAsdrinkingswatersregulations,sthesownersorsoperatorsofsaspublicswate
rssystemswhichsfailsstoscomplyswithsapplicablesmonitoringsrequirementssmustsgivesnoticesto
sthespublicswithin




3,000scubicsfeets-scorrectsanswers--
Howsmanyscubicsfeetsofswaterswillsasrectangularstanksthatsiss20sfeetslongsbys15sfeetswidesan
ds10sfeetshighshold?

3,000sgpds-scorrectsanswers--
Calculatesthesaveragesweeklysflowsforsassystemswithsthesfollowingsdata.s
SUNDAY:s3,000sgallonssMONDAY:s4,000sgallons
TUESDAY:s3,500sgallonssWEDNESDAY:s2,000sgallons
THURSDAY:s3,000sgallonssFRIDAY:s3,500sgallons
SATURDAY:s2,000sgallons

5slbss-scorrectsanswers--
Howsmanyspoundssofsaschemicalsappliedsatsthesratesofs3smg/Lsaresrequiredstosdoses200,00
0sgallons?

50smg/Ls-scorrectsanswers--
Whatschlorinesconcentrationsshouldsbesproducedswhensdisinfectingsaswellsorswellspump?

7shourss3sminutess-scorrectsanswers--
Ansemptysatmosphericsshortagestanksiss8sfeetsinsdiametersands32sfeetshigh.sHowslongswillsits
takestosfills90%sofsthestanksvolumesifsaspumpsissdischargingsasconstants24sgallonspersminutes
intosthestank?

7.5s-scorrectsanswers--ChlorineswillsdestroysbacteriasmostsrapidlysatswhatspH?

8.0s-s9.0s-scorrectsanswers--
WhichsofsthesfollowingspHsrangesswouldsdepositsasthinsfilmsofscalciumscarbonatesonsthesinsi
dessurfacesofsaspipe?

Accordingstosthesmanufacturersrecommendationss-scorrectsanswers--
Howsoftensshouldspreventativesmaintenancesforsequipmentsbesperformed?

Acidsissaddedsverysslowlystostheswaters-scorrectsanswers--
Whatsissthescorrectsproceduresforsmixingsacidsandswater?