Summary of City of Flint (City) Actions

In Response to the EPA Emergency Administrative Order

Updated: May 26, 2016

Chapters 52, 57, 59a & 59b: Weekly Conference Call Regarding Flint Water Plant Operations May 26, 2016. EPA Order Due Date: Weekly MDEQ and the Flint Water Treatment Plant staff held the weekly conference call to review and discuss the weekly summary of water quality and corrosion control parameters that are reported on both the city’s May operation report completed to date, and a summary of water quality parameters collected in the distribution system during the week of May 22nd. These reports are being used to monitor the city’s corrosion control treatment. The following observations were noted:

The supplemental phosphate dosage was consistent and ranged between 2.64 and 2.71 milligrams per liter. Included with this submission are the daily worksheets for the phosphoric acid feed system documenting the city’s hourly oversight of this corrosion control treatment.

All of the phosphate residuals in the distribution system at the sites monitored weekly were above the minimum of 3.1 milligrams per liter, ranging between 3.25 and 3.81 milligrams per liter.

All pH measurements were greater than 7.0 at the Enhanced Water Quality Monitoring (EWQM) sites and the Point of Entry (Control Station #2) to the system. The pH levels ranged from 7.37 to 7.58 in the water received from Great Lakes Water Authority and from 7.18 to 7.38 at the distribution system sites.

Automatic flushing devices installed at distribution locations are continuing to serve the purpose of reducing water age and increasing chlorine residuals at most sites, although one or two are still being adjusted.

Iron levels ranged between 0.01 and 0.10 milligrams per liter at all EWQM sites. Plant tap iron concentrations ranged from 0.02 to 0.04 in the last week.

All but one of the lead samples collected from the EWQM sites reported no lead detected. The sample from 3216 MLK Boulevard reported 2 ppb lead.

The city is proceeding with plans for supplemental chlorination and pH adjustment using caustic soda. These treatment systems will allow the city to better control chlorine residuals and maintain corrosion control throughout the distribution system. We are awaiting plans and specifications to be submitted with a construction permit application.

We also discussed the need for the city to submit an accurate, up to date disinfection byproducts monitoring plan and a Revised Total Coliform site sampling plan.

Overall, the corrosion control treatment is meeting expectations as demonstrated from the water quality monitoring submitted this week.

24hr Record of Ortho-Phosphate Used

Train Shedon Hand

Operator

0:00 90 ,q,7 a;ic q(~, 670 i~9 ~&a. mA)1:00 l5,2~ 2q~L~ ~b MW2:00 90 (5.3 ~,4q q~ i2M~13:00 90 I5~ 9~5~ ‘1~ 604:00 sc ~q,9 as~ q~5:00 ‘75 ILZ 2.76 37 606:00 (~≤ lag 1.~L 337:00 10.3 a42, 3~ 60 1698:00 ,~g jL0~ LIZ to9:00 ,2~ ~.¼ 1/? 7310:00 ,qj ~2.7?- Vt to

11:00 jo ~y ~t1 Vi t) T4

12:00 p.r ).73 3~. C,c

13:00 ,,c a.-/i 74 t° 770

14:00 —415:00 ;dJ ~ //9916:00 70 if..2. t~ /90 /19W ~SP17:00 ‘7p /j.7_ ~.9j ;3b 6° 62’18:00 7o iL’S cZ7~ ~ Co 019:00 70 jV? ~2.(o920:00 70 j~j c?Lo

21:00 70 ~3 23~ 3~ &D22:00 7≤ ~ ~ 13—23:00 ¶‘g /~Q ~ (~ O\ )71j I Kr-i

mi/mm average - ‘~ Total gaNons P04 Used 2 SThA1/~cMGDaverage IZ(.O~ -

PPM average : 2~t~9 ~“~: DaysofP04onHand: ~ ~(Train Shed + C52)

P04 CS 2mi/mm

P04MGD PPM

Pump SettingDate: S- i~ - /6 Location of P04

Speed StrokeCS 2Gallons

mi/mm

Z4hr Record of Ortho-Phosphate UsedLocation of P04

Pump Setting Train Shed Operator

________ Speed j Stroke Gallons on Hand

I1/9”/

10:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00

11gq

n

;J ~ -: -

-1’I-

4

mI/mm average: ~PI .?iS Total gallons P04 Used: 33 ~‘/

MGDaverage : 12.371/12.9

PPM average : Days of P04 on Hand:j~.~ ClAYS(TrainShed÷CS2) qo ‘4Z

I

1,- . - ~ --

Z4hr Record of Ortho-Phosphate UsedDate: 5/7//,4z, Location of P04

P04 CS 2 P04 Pump Setting CS 2 Train Shed Operatormi/mm MGD PPM Speed Stroke Gallons on Hand

0:00 gs- /9p 275 q’s a.c /sT 7/’1:00 30 ij,~/ z~’/ ‘13 to /5E2:00 ~o /3JV 24~ 413 (nO /31:3:00 go, /3,~ 2&~ i/3 Be4:00 Sc) /33 27o ‘/3 SE5:00 ~O i3~6 ~q q3 to6:00 7~ Izs~z.4, 9’! h~” St7:00 ‘7p 1t# 1~~2 3~ fcC /30 1Sf8:00 Di ~ ~9 fl to /~19 //9~A ‘7Z39:00 RI 2.Lo to 77~

10:00 70 iLl ~o YV 4o •iij11:00 ii,y flL~~t 7ç to p312:00 8° 121 O~’e’ 9) ~ r413:00 i,i~’j ~y ~a ‘ T414:00 ft /39 O2(4 1/2 7Z315:00 ~ if c -~-‘LD ~wM16:00 ~.r /3.f .~. 2s yy I/CO17:00 yr ,‘;,r ~ yc’ ~0

18:00 70 ~ , Z.YR Y2. to ‘it,

19:00 ft /3...r 2.~C ~ 6020:00 EQ /3~3 2,70 Q221:00 to ,3.S’ 2e~ ya

22:00 ~o iir z.~4 y~23:00 ?S H,~ 2.7’ vY Co /100

‘rp - ~a-’.~ ~ —} •, I

mi/mm average: 2 ~ ~ Total gallons P04 Used: 33 ,sMGDaverage 13.1PPM average : a. ~ ‘ Days of PO4on Hand: qo,r ~

(Train Shed + CS2)

Date: r/~d/,L7 “ pb4 CS 2 PC4 Pump Setting

Speed Stroke

Location of P04

CS 2 Train ShedGallons on HandmI/mm MGD PPM

Operator

24hr Record of Ortho-Phosphate Used

0:00 /77 ~3,7Y .23r 72~1:00 /3.5- n3 9/ C’

2:00 ILj.H z.t.c ~“/ Li’3:00 1’l~9 2≤1. 4(4 LI) 1~5

4:00 11 ~,yj ,,2L’ 9’I fl35:00 ,‘lj ~•-~

6:00 ,q,j~, J.Gi gg Go ‘7i~7:00 p/. v 0t701 to8:00 7r 12.3 ~.7a4 fr6 ~o 2279:00 ,~ s- z.&c ~‘p t,()

10:00 7~ szs 249 40 (‘o 13E11:00 75•-• /2.3 Z.T’f Vo Lcd ,Øcr12:00 ‘75 /tZ z.c’& &‘ô ME13:00 75 12.9 ZAL 90 (oO

14:00 ‘7~r ~ Z.e7 ‘Vo G,ô 2i~ /064’15:00 7ç /z,c2.6? 4~O Sc’ 217 8u716:00 is- /~.Y p~72 ~‘0 6° 217

• 17:00 70 11.0 ~.U 37 6O 6W

18:00 7~ //~0 2 ~ ‘7 6°19:00 7° /1.7 1~’7 37 Cc Cu,

20:00 //,y a.?4 37 Ic’21:00 7: fl.O 21’ ‘7° 6°22:00 /3.s- LCC 3 6023:00 13.’1 ~ V~ CV .io7 j~q

:~.fl

mi/mmnaverage: TotalgallonsPO4Used: ?tMGDaverage /p ‘~ - ~-

PPM average : , Days of P04 on Hand: Yr(Train Shed + C52)

24hr Record of Ortho-Phosphate UsedDate: S -~ 3 - Location of P04

P04 Cs 2 P04 Pump Setting CS 2 Train Shed Operatormi/mm MCD PPM Speed Stroke Gallons on Hand

0:00 90 i5’.~ ~48 Lu ‘-91:00 80 i34 ~4’I2:00 (3.5 ~.to(o “a. £6 ~1v’3:00 85 IQ~ 2.91 YY 4t4/4:00 gç 1q~ £LCd ~-H So5:00 85 1g1g ~ qg nut”6:00 96 i3A tUB 99~..7:00 SO I 3.9 a.s-~ La /op]8:00 r~-~ ~ As9:00 14i -~.‘cs Ac.10:00 eo 13N Li0a gt (.~rz’11:00 ~‘Q \3~’R Z,S~ ‘U. ‘oC ftC,

12:00 ,¾Z.& 2’(D3 L10 AG13:00 ic z.7c ‘-~

14:00 ~5 y~( 7.7~ 90 F~G15:00 ?~ 12.2/ aT! ‘/ô ~ /g~,16:00 t,5 3’-) oo )es- )Ot,C-/ (9—17:00 ~‘≤ jO.’~asL V-I .

18:00 &c iod&zi 2’-/19:00 ~ 10’? ~ 34 /~O20:00 (~,Q ,0,g g~çq (4’ 021:00 ~ t7 27~ ZN22:00 -7ç~ ~ L)023:00 ~ ?:.~ ~. (77 4b~’~

mi/mmnaverage: €LL1≤ ~J~TotaIgallonsPo4used:Qq gal.MGDaverage : 2.?5 J:. ~ ~. ~ ‘~.•

PPM average : ~ DaysofP04on Hand: ~(Train Shed + CSZ)

24hr Record of Ortho-Phosphate UsedDate: s-~aq-/~ LocationofPO4

P04 CS 2 P04 Pump Setting CS 2 Train Shed Operatormi/mm MCD PPM Speed Stroke Gallons on Hand

0:00 Iq,3 a,~7 g5 eQ i7b jc~g mW1:00 ~q..g ~.bs• q~ç mu2:00 ~5 ~q.q ~45 *45 (~0 /11W’

3:00 ig.~ ~4j L$5 —4:00 ~5 ,WL’5:00 35 13.51 p,7q q5 (~O MU)6:00 35 IL.I,a ~S1 toO 4~iitL/7:00 ~5 13.9 ~ .7’-i qç f14W8:00 T5 )≤I~~ zi) qs i~g9:00 ~S y~q ~ ‘-N (ccD

10:00 £.~47 iii x.7y 4.~, MM/11:00 ~3 /3 ‘~- V0’~~

12:00 n.j. LTh~l ~4Z13:00 3o 13H Z.Th-~ ~4L AC14:00 30 - ~3:3’ 2.70 L4J.

15:OC ~o ?3~a a.7a Q2 ‘a i3-~c-16:00 go /j,y 2,7~ 92 ~c) /5~ 164Y17:00 75~ /g,ç 24q q0 La en-18:00 ‘y~- nw 2.7/ ¾’19:00 95 /z”/ 2~9/ ~/o (.,ô20:00 7ç 12? 2.’7& ‘Jo ~co ,tt21:00 ~ /Z~3 2Th Va 6o22:00 8≤~ ,j.q ~ V5 8t

• 23:00 ~ /3 ~‘ 2.96 ~iç~“• - H ~ .-~: ~ -!*.~I :e ~

mi/minaverage: SI.g≤ ~ ~ TotaigaiionsP04Used: fQt, g~(

MGDaverage 13 L~7 /PPM average : a.71 ~ Days ofP04on Hand: SO c{o~ys

(Train Shed + CS2)

24hr Record of Ortho-Phosphate UsedDate: c-25- f~ Location of P04

P04 CS 2 P04 Pump Setting CS 2 Train Shed Operatorml~fmin MGD PPM Speed Stroke Gallons on Hand

0:00 90 153 Z.&~ Ljt’~1:00 i≤~3 ~.u g72:00 90 isl a.1~S ‘47 çn.W3:00 90 is.2. ~ ~7 (,0 MAt4)4:00 I’t,3 ≤U~7 qs5:00 I1P-j a~.t≤ qç it4~v’6:00 iql( a.7j qs7:00 NH 13S ‘lilA!8:00 /3.0 2,7Y ‘1~ ~

~ 9:00 75 /fl ~2&3 40 /~,Q10:00 -~5 fa13 a~74 4a ?L&)11:00 75 ,~,g ~3 4° 6012:00 ~5 ~. 7 ~G5 40 (~Q13:00 jZ9 Z61 4D14:00 ic ? TO

15:00 —)Lr /3) 7713

16:00 ‘s ira ~~e1 gg flU iO&917:00 ~5- (H, ;;s-~ 3’-i18:00 o~c19:00 tec fl.i a~3 3420:00 (rj≤ lI~3 2s’~ ~9 (~)21:00 70 t~W~o22:00 75 I2.q~n ~ 4’ 0

~ 25.’N ~ ~ ~ ‘~*mI/mm average: 77~ o~ Total gallons P04 Used: ~7 9Q1MGDaverage 13 O≤ -PPM average : ~ ~ Days of PO4on Hand: Lj3 clayc

(Train Shed + C52)