Please please answer the right answers to the questions (1-32, skip #27 and 28 only). Read the lab exercise #10 to able to answer the questions.

J u st d o n ot h it th e S ubm it Q uiz b utto n u ntil y o u a re c o m ple te ly d one w it h th e q uiz . A fte r yo u h it th e s u bm it b utto n y o u w ill n ot b e a ble to c h a nge y o u r a nsw ers . 0 .1 5 pt s Questio n 1 It is a dif ferential and selective growth media It is neither dif ferential or selective It is a differential growth media It is a selective growth media Which of the following is true about the lactose broth? 0.1 5 pt s Questio n 2 Wh ic h o f th e fo llo w in g im ages la cto se b ro th tu bes c o n ta in c o lif o rm s? 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 2/21 B A D C 0.1 5 pt s Questio n 3 microbial respiration disinfection sedimentation chemical oxidation What process removes solid particulate matter from wastewater? 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 3/21 filtration 0.1 5 pt s Questio n 4 chemical oxidation sedimentation filtration disinfection microbial respiration After the solids are removed, what process removes organic matter from the wastewater ef fluent? 0.1 5 pt s Questio n 5 filtration disinfection chemical oxidation microbial respiration sedimentation After the solids are removed, what process removes nitrate from the wastewater ef fluent? 0.1 5 pt s Questio n 6 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 4/21 filtration disinfection sedimentation chemical oxidation aeration Follo w u p q uestio n to th e p re vio u s q uestio n o n " w ha t p ro ce ss r e m ove s org anic m atte r fr o m th e w aste w ate r e ff lu ent? " Wh at fe atu re o f w aste w ate r tr e atm en t is u se d to s p e ed u p th e r e m ova l o f org anic m atte r. 0 .1 5 pt s Questio n 7 primary treatment secondary treatment screening final treatment If the wastewater ef fluent remains on site and is not released to a natural water system like a river, lake or ocean, what step in the wastewater treatment process can be skipped. 0.1 5 pt s Questio n 8 coccus shaped Mark all correct criteria of a coliform. Only select items that are true all of the time. 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 5/21 endospore forming rod shaped pathogenic Gram positive non-endospore forming Gram negative ferment lactose while producing gas 0.1 5 pt s Questio n 9 Since they are so many pathogens it would be dif ficult to know which ones to test for.

Not all pathogens will be present all of the time and in all places of a body of water .

Each separate testing procedure costs more money Each pathogen would require a separate testing procedure When testing water samples for the presence of coliforms why would it not be better test directly for pathogens? Mark all correct answers. 0.1 5 pt s Questio n 1 0 True False When fecal coliforms are present, pathogens are also always present. 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 6/21 0.1 5 pt s Questio n 1 1 pathogens coliforms oxygen organic matter What is ultimately the BOD an indirect measure of in a water sample? 0.1 5 pt s Questio n 1 2 coliforms oxygen organic matter pathogens What is directly measured in BOD testing? 0.1 5 pt s Questio n 1 3 Add .01 mLs of the original solution to 500 mL of diluent Add .01 mLs of the original solution to 499.99 mL of diluent Add .50 mLs of the original solution to 450 mL of diluent Add 5 mLs of the original solution to 495 mL of diluent Describe how you would prepare a .01 dilution that has a total volume of 500 mLs after the dilution is prepared. 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 7/21 Add 5 mLs of the original solution to 500 mL of diluent 0.1 5 pt s Questio n 1 4 H ere is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. W hat is th e to ta l d ilu tio n fa cto r fo r sa m ple # 1? W rit e th e d ecim al fo rm o f th e d ilu tio n fa cto r. F or e xa m ple 1 x1 0 = 0 .1 S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) #1 300 none 8.0 7 .0 # 2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 -1 2 2 0 .1 5 pt s Questio n 1 5 H ere is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. W hat is th e to ta l d ilu tio n fa cto r fo r 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 8/21 sa m ple # 2? W rit e th e d ecim al fo rm o f th e d ilu tio n fa cto r. F or e xa m ple 1 x1 0 = 0 .1 S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) #1 300 none 8.0 7 .0 # 2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 -1 2 2 0 .3 pt s Questio n 1 6 H ere is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. W hat is th e to ta l d ilu tio n fa cto r fo r sa m ple # 3? W rit e th e d ecim al fo rm o f th e d ilu tio n fa cto r. F or e xa m ple 1 x1 0 = 0 .1 S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) #1 300 none 8.0 7 .0 -1 2 2 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 9/21 #2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 0 .1 5 pt s Questio n 1 7 H ere is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. W hat is th e B O D v a lu e fo r s a m ple # 1? S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) #1 300 none 8.0 7 .0 # 2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 2 2 0 .3 pt s Questio n 1 8 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 10/21 Here is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. W hat is th e B O D v a lu e fo r s a m ple # 2? S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) #1 300 none 8.0 7 .0 # 2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 2 2 0 .3 pt s Questio n 1 9 H ere is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. W hat is th e B O D v a lu e fo r s a m ple # 3? S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) 2 2 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 11/21 # 1 300 none 8.0 7 .0 # 2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 0 .1 5 pt s Questio n 2 0 H ere is th e r a w d ata fo r 3 w ate r s a m ple s te ste d fo r B O D. Y ou w ill fin d th e vo lu m e o f s a m ple u se d, d ilu tio n w ate r u se d ( if a ny) a nd th e in it ia l a nd fin al d is so lv e d o xyg en r e adin gs. M atc h th e s a m ple w it h th eir a ppro pria te d escrip tio n b ase d o n y o ur k n ow le dge o f s ta ndard B O D le ve ls fr o m th e la b m anual. S am ple S am ple V o lu m e used (m L) Vo lu m e o f B O D dilu tio n w ate r ( m L) In it ia l D is so lv ed O (m g/L ) Fin al D is so lv ed O (m g/L ) #1 300 none 8.0 7 .0 # 2 3 297 8.0 4 .0 # 3 250 250 8.0 1 .0 2 2 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 12/21 Sample #1 [ Choose ] Sample #2 [ Choose ] Sample #3 [ Choose ] 0.1 5 pt s Questio n 2 1 colonies mg/100 mL mg/L O BOD is a unitless value cells cells/mL What are the appropriate units for BOD reported in? 2 0.1 5 pt s Questio n 2 2 A o ne-m ile p ool w ate r s a m ple w as te ste d fo r c o lif o rm s u sin g th e P etr if ilm t e st. T he s a m ple w as fir s t d ilu te d b y tr a nsfe rrin g 5 m L in to 5 m L o f s te rile d ilu ent a nd th en o ne m L w as te ste d o n a P etr if ilm . T he fo llo w in g c o unts w ere p ro duce d:

P etr if ilm r e su lt s : 2 b lu e c o lo nie s w it h a g as b ubble 1 b lu e c o lo ny w it h out a g as b ubb le 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 13/21 3 r e d c o lo nie s w it h a g as b ubble 7 r e d c o lo nie s w it h out a g as b ub ble 3 0 d ark c o lo re d c o lo nie s w it h out a g as b ubble H ow m any fe ca l c o lif o rm s p er 1 00 m L a re in th e s a m ple ? 0.1 5 pt s Questio n 2 3 A o ne-m ile p ool w ate r s a m ple w as te ste d fo r c o lif o rm s u sin g th e P etr if ilm t e st. T he s a m ple w as fir s t d ilu te d b y tr a nsfe rrin g 5 m L in to 5 m L o f s te rile d ilu ent a nd th en o ne m L w as te ste d o n a P etr if ilm . T he fo llo w in g c o unts w ere p ro duce d:

P etr if ilm r e su lt s : 2 b lu e c o lo nie s w it h a g as b ubble 1 b lu e c o lo ny w it h out a g as b ubb le 4 r e d c o lo nie s w it h a g as b ubble 7 r e d c o lo nie s w it h out a g as b ub ble 3 0 d ark c o lo re d c o lo nie s w it h out a g as b ubble Wh at a re th e to ta l n um ber o f c o lif o rm s p er 1 00 m L in th e s a m ple ? 0.1 5 pt s Questio n 2 4 A o ne-m ile p ool w ate r s a m ple w as te ste d fo r c o lif o rm s u sin g th e P etr if ilm t e st. T he s a m ple w as fir s t d ilu te d b y tr a nsfe rrin g 5 m L in to 5 m L o f s te rile 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 14/21 Neither safe to swim in or drink Safe to swim in but not drink Safe to swim in and drink dilu ent a nd th en o ne m L w as te ste d o n a P etr if ilm . T he fo llo w in g c o unts w ere p ro duce d:

P etr if ilm r e su lt s : 2 b lu e c o lo nie s w it h a g as b ubble 1 b lu e c o lo ny w it h out a g as b ubb le 4 r e d c o lo nie s w it h a g as b ubble 7 r e d c o lo nie s w it h out a g as b ub ble 3 0 d ark c o lo re d c o lo nie s w it h out a g as b ubble B ase d o n th e to ta l c o lif o rm s a n d fe ca l c o lif o rm s th at y o u c a lc u la te d. W hat is th e r e co m mendatio n fo r th is b ody o f w ate r? 0.5 pt s Questio n 2 5 Describe what the main goal of Coliform testing is. T ake your time to explain the nuance of coliform testing and what information the test measures directly and indirectly. Edit View Insert Format Tools Table 12pt Paragraph 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 15/21 p 0 words > 0.5 pt s Questio n 2 6 p 0 words Describe what the main goal of BOD testing is. T ake your time to explain the nuances of how the test works and what is measured directly and indirectly . > 1 pt s Questio n 2 7 Ta ke apic tu re ofyo ur P etr if ilm in awell lit a re a wit h outd ir e ct sp otlig htin g 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 16/21 p 0 words Ta ke a p ic tu re o f y o ur P etr if ilm in a w ell- lit a re a w it h out d ir e ct s p ot lig htin g or fla sh . C ro p th e im age a ro und th e P etr if ilm . E m be d it in th e s p ace b elo w . P le ase u se th e e m bed fu nctio n r a th er th an th e a tta ch fu nctio n (p aperc lip ic o n). T his q uestio n is w orth 1 p oin t if it is e m be dded p ro perly .

O ne e xtr a c re dit p oin t w ill b e a w ard ed if y o u e nte re d y o u r r e su lt s c o rre ctly in to th e th e o nlin e f o rm (h ttp s://f o rm s.o ffic e.c o m /P ag es/R esp onseP ag e.a sp x?

id =B Usxb 46t1 U q1Im VvM Jx7E G P5tK bq1w pG nhR Q _G DG 2o xU M 1B RV01D TFZ b y F rid ay a t m id nig ht. > 3 pt s Questio n 2 8 C olif o rm T e stin g R esu lt s T here a re th re e p arts to th is a ss ig nm en t, m ake s u re y o u c o m ple te a ll Edit V iew Insert Format Tools Table 12pt Paragraph 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 17/21 parts fo r fu ll c re dit . C alc u la tio ns In te rp re ta tio ns D is cu ssio n D o n ot c o m ple te th is q uestio n u ntil a fte r F rid ay a t M id nig ht to g iv e e ve ry o ne tim e to g et th eir d ata in to th e o nlin e f o rm (h ttp s://f o rm s.o ffic e.c o m /P ag es/R esp onseP ag e.a sp x?

id =B Usxb 46t1 U q1Im VvM Jx7E G P5tK bq1w pG nhR Q _G DG 2o xU M 1B RV01D TFZ .

P art I - C om ple te t h e f o llo w in g c alc u la tio ns ( 1 p ts ) ave ra ge fe ca l c o lif o rm s / 1 00 m L fo r e ach s a m ple lo ca tio n ave ra ge to ta l c o lif o rm s p er 1 00 m L fo r e ach s a m ple lo ca tio n U se th e excel d ata set t o a ccess t h e r a w d ata ( h ttp s://b utte ed u- m y.s h are p oin t.c o m /: x :/g /p ers o nal/m atia sekm i_ b utte _ed u/E U B87E P4tZ hD nN x e= fC fl6 D ) a fte r F rid ay a t M id nig ht. C onsid er u sin g e xce l fo r th is a ctiv it y . F ir s t d ow nlo ad a c o py o f th e r e su lt s , th en u se th e s o rt fu nctio n to s o rt a ll o f th e d ata b y s a m ple lo ca tio n. N ext c a lc u la te a ve ra ges b y p uttin g th e fo llo w in g e quatio n in to a n e m pty c e ll " = ave ra ge(B 2:B 11 )" . In ste ad o f B 2:B 11 u sin g y o ur m ouse to s e le ct th e c e lls ( v a lu es) th at y o u w ant to b e ave ra ged.

P art II - M ake t h e f o llo w in g in te rp re ta tio ns ( 1 p ts ) U sin g th e E PA r e co m mendatio ns in y o u r la b m an ual, d ete rm in e w hic h sa m ple lo ca tio ns a re s a fe to d rin k o r s w im in b ase d o n th e a ve ra ges. Y ou ca n o rg aniz e y o ur r e su lt s in to th e fo llo w in g ta ble . C opy th e ta ble a nd paste it in to th e s p ace b elo w a nd th en e nte r y o u r r e su lt s . O r fe el fr e e to m ake y o ur o w n ta ble w it h th e s a m e in fo rm atio n.

Location average fecal coliforms / 100 mL average total coliforms per 100 mL Safe to Drink (Y es or No) Safe to Swim (Yes or No) One Mile Pool Five Mile Pool Horseshoe 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 18/21 p 0 words Lake Butte Creek (Honey Run Bridge) Sacramento River Magalia Reservoir Feather River Part III - D is cu ssio n ( 1 p ts ) W rit e a p ara gra ph d escrib in g y o ur r e su lt s a nd in te rp re ta tio ns. In y o ur para gra ph w hic h s a m ple s a re th e c le anest a nd w hic h o nes a re th e dir tie st. F or e ach s a m ple d escrib e w hy y o u th in k e ach s a m ple is c le an o r dir ty b ase d o n th e c o lif o rm r e su lt s . H ere is a lin k to th e sam plin g m ap (h ttp s://c alt o po.c o m /m /A 7R 6) s o y o u c a n s e e w hat k in d o f d eve lo pm en t is n ear a nd u pstr e am o f e ach s a m plin g lo ca tio n if y o u a re n ot fa m ilia r w it h e ach lo ca tio n.

> Edit V iew Insert Format Tools Table 12pt Paragraph 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 19/21 0.5 pt s Questio n 2 9 p 0 words Explain why wastewater treatment largely focus on removing organic matter and not just removing pathogenic organisms from the wastewater ef fluent? You will find some useful resources for your answer from this National Oceanic and Atmospheric Association NOAA resource on eutrophication.

(h ttp s://o cean serv ic e.n oaa.g ov/f a cts /e u tr o phic atio n.h tm l) > 0 .1 5 pt s Questio n 3 0 C rit ic a l th in kin g a nd B O D te stin g: Edit View Insert Format Tools Table 12pt Paragraph 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 20/21 overestimate underestimate If a B O D b ottle w as n ot fille d to th e to p a nd h ad a s m all a ir b ubble , w ould i t o ve re stim ate o r u ndere stim ate y o u r fin al B O D v a lu e fo r th e s a m ple ?

0.1 5 pt s Questio n 3 1 underestimate overestimate C rit ic a l th in kin g a nd B O D te stin g:

If a B O D s a m ple w as d ilu te d w it h d ilu tio n w ate r th at c o n ta in ed a 1 0% co nce ntr a tio n o f s a lt w ould th is o ve re stim ate o r u ndere stim ate y o ur fin al B O D v a lu e fo r th e s a m ple ? 0.1 5 pt s Questio n 3 2 overestimate underestimate C rit ic a l th in kin g a nd B O D te stin g:

If a B O D s a m ple w as d ilu te d w it h d ilu tio n w ate r th at c o n ta in ed a 2 % co nce ntr a tio n o f g lu co se w ould th is o ve re stim ate o r u ndere stim ate y o ur fin al B O D v a lu e fo r th e s a m ple ? 4/11/2021 Quiz: Lab Report #10 - W ater Quality and Wastewater Treatment - Quiz https://canvas.butte.edu/courses/22138/quizzes/1 13340/take 21/21 Quiz saved at 6:44pm Submit Quiz