[PPT] - Mic r omonitor ing: A Cost E ffe c tive Appr oac h for L oc PowerPoint Presentation

SLIDE 1

Mic r

monitor

ing: A Cost E ffe c tive Appr

ac h for

L

c ating I&I in

Sanitar y Se we r s

Ga ry D. Silc o tt, Jr., P.E .

SLIDE 2

Ag e nda

1 Bac kgr

und and Histor

y

2 Milfor

d Ce nte r Ohio Mic r

monitor

ing Pr

gr

am

3 L

gan Ohio Mic r
monitor

ing Pr

gr

am

4 Jac kson Ohio Mic r

monitor

ing Pr

gr

am

5 Summar

y / Q&A

SLIDE 3

Bac kgr

und and Histor

y

Mic ro mo nito ring wa s de ve lo pe d b y Sta nte c , to pro vide a wa y to q uic kly a nd e ffic ie ntly ide ntify upstre a m sma ll dia me te r se we rs c o nta ining so urc e s

f Inflo w a nd Infiltra tio n (I/ I) whe re tra ditio na l flo w

mo nito ring me tho ds a re ine ffe c tive . Sta nte c ha s c o mple te d se ve ra l Mic ro mo nito ring pro je c ts in the pa st fe w ye a rs; he re we will hig hlig ht thre e suc c e ssful pro je c ts fo r rura l c o mmunitie s in Ohio .

1

SLIDE 4

4

What is a Micromonitor?

Q = AV at high flow Q = weir curve at low flow

ISCO 2150 F low Monitor with a Customize d We ir

SLIDE 5

Mic ro mo nito ring We ir

A smooth weir

SLIDE 6

Id e ntify sig nific a nt I/ I

so urc e s in sma ll se we rs

Suita b le fo r lo w flo w

c o nd itio ns

No CSE

(o ne -ma n c re w)

Wo rks whe re tra d itio na l

mo nito rs d o no t

Allo ws fo r F
c use d SSE

S

Quic kly d e plo ye d , mo ve d

a nd re mo ve d

L OWE R OVE RAL L COST !

Micromonitoring Advantages

SLIDE 7

Low Flow Problems

Ac c ura c y De b ris No pro b le m

SLIDE 8

Domestic Usage Identified

Sho we r Sho we r L

w

F lush T

ile t

Did no t Wa sh Ha nds Wa she d Ha nds Wa shing Ma c hine

Midnig ht 6:00AM

SLIDE 9

9

Where is the I/I problem here?

All yo u ne e d is ONE sto rm!!!

SLIDE 10

Monitor numerous sites to locate the real problem

Mic ro mo nito r Re g io na l Mo nito r T runk se we r no t MM Mic ro mo nito re d F lo w Co nne c to r Arro w 01 L ORE

05

04 05 06 03 10 11 26 66 32 27 28 33 34 31 30 16 42 46 43 045 20 No n-E xc e ssive ~ < 5 Ga l / ft / sto rm Mo de ra te ~ > 5 Ga l & < 10 Ga l / ft / sto rm E xc e ssive ~ > 10 Ga l / ft / sto rm

SLIDE 11

Results!

1.17 inch Storm 1.29 inch Storm Pre-rehab monitoring Post-rehab monitoring

A gas line bore d through the se we r line was found, whic h was re move d during the monitoring pe riod be low.

SLIDE 12

Normal Tap

This is what a tap look like in Dry Weather.

SLIDE 13

MH7-6

Would have been missed using just CCTV!

SLIDE 14

Infiltration Tap

This is looking into the Infiltration.

SLIDE 15

I&I Can be e lusive !

Ma in L ine a nd Ma nhole s r e pla c e d but la te r a ls r e ma ine d.

SLIDE 16

Village of Milfor d Ce nte r

2

2012 Mic ro mo nito ring Pro g ra m

SLIDE 17

Unio n Co unty, OH
Se wa g e tre a te d b y City o f Ma rysville
I/ I

in sa nita ry se we r, whic h is re la tive ly ne w a nd is c o mprise d o f PVC pipe a nd pre c a st ma nho le s

Co st to tre a t flo w inc re a se d 3x d uring

we t se a so n

364 c usto me rs
Smo ke te sting a nd ma nho le inspe c tio ns

c o nd uc te d d uring ra in e ve nts d id no t find I/ I

Cho ic e b e twe e n CCT

V a nd Mic ro mo nito ring

Mic ro mo nito ring wa s c ho se n to pin-

po int pro b le ms

Village of Milford Ce nte r

SLIDE 18

Mic romonitor L

c ations

07 01 02 08 10 12 13

F M

09 11

SLIDE 19

MI-04 RG

Monitoring L

c ation 4

SLIDE 20

Monitoring L

c ation 4

NO I/ I

SLIDE 21

Monitoring L

c ation 6

MI-06

SLIDE 22

Monitoring L

c ation 6

NO I/ I

SLIDE 23

Monitoring L

c ation 10

MI-10 MI-13 MI-01 MI-12 MI-02 MI-09 MI-11

SLIDE 24

Monitoring L

c ation 10

I/ I

SLIDE 25

Monitoring L

c ation 01

Wa te r Pla nt Disc ha rg e I/ I

SLIDE 26

07 01 02 08 10 09 12 13 11 03 04 05 06 Wa te r Pla nt Pump Sta tio n

Pha se 1 Mo nito r

*

Pha se 2 Mo nito r

* Mo nito rs 01, 02, 07 we re le ft in fo r Pha se 2. 06-18-12

* * *

9% (0.73) 0% (0) 0% (0) 13% (0.42) 1.2% (0.08) 0.9% (0.13) 0.9% (0.13) 0.8% (0.75) 0.1% (0.09) 73% (10.5) 0.4% (0.20) 1.1% (0.64) 5% (1.46)? 5% (1.46)

Pe rc e nta g e o f to ta l I

I

fro m sub b a sin Ra tio o f I

I

to Pipe L e ng th, >1 (re d) me a ns mo re tha n a ve ra g e I

I

(T his sub b a sin do e s ha ve sig nific a nt infiltra tio n a fte r the sto rms.)

F M

Milford Ce nte r Sc he matic

SLIDE 27

Iso la te d I

nflo w so urc e s to thre e se we r pipe s in a lle y b e twe e n So uth Mill St. a nd Ple a sa nt St.

Iso la te d infiltra tio n so urc e s to thre e se we r pipe s

a lo ng the c re e k

In a ll, the so urc e s we re iso la te d to 1,900’ o f

se we r o ut o f the ~30,000’ tha t ma ke up the Villa g e ’ s syste m

Re sults

SLIDE 28

City of L

gan

3

2013 Mic ro mo nito ring Pro g ra m

SLIDE 29

Curre nt Situa tio n

Inflow / Infiltr ation (I/ I) in the Colle c tion Syste m

I/ I

in City’ s sa nita ry se we r syste m c o ntrib ute s to b a se me nt flo o d ing , o ve rflo ws, a nd infla te d o pe ra ting c o sts.

Outd a te d c o lle c tio n syste m o f ne a rly 100% vitrifie d c la y

pipe (VCP) surc ha rg e s in se ve ra l lo c a tio ns d uring he a vy ra ins.

Syste m la c ks c a pa c ity to c o nve y a ll we t we a the r flo w to

the ne wly e xpa nd e d WWT P.

L

a st syste m surve y wa s ne a rly 30 ye a rs a g o .

SLIDE 30

Purpo se

Goals

Re mo ve a s muc h I/ I

fro m the syste m a s po ssib le witho ut e xha usting a ll re so urc e s

E

limina te b a se me nt flo o d ing / o ve rflo ws / future c o mplia nc e po ssib ilitie s

Id e ntify b o ttle ne c ks a nd o the r d e fic ie nc ie s in c o lle c tio n

syste m

Upd a te syste m ma pping to re fle c t a c tua l fie ld c o nd itio ns
Ge t se wa g e to ne w WWT

P

Pro je c t must b e a ffo rd a b le !

SLIDE 31

A c usto mize d a ppro a c h to me e t the City’ s ne e ds

SLIDE 32

Appro a c he s

T r aditional Appr

ac h
Id e ntify I/ I Re la te d Pro b le ms
Re g io na l F

lo w Mo nito ring / Ba sin Se le c tio n

De ta ile d SSE

S

Re me d ia tio n

Re c o mme nd a tio ns

Customize d Appr

ac h
Id e ntify I/ I Re la te d Pro b le ms
Re g io na l F

lo w Mo nito ring / Ba sin Se le c tio n

 F

c use d SSE

S

 Mic romonitoring  CCT

V

 Smoke and dye te sting

and othe r SSE S ac tivitie s as ne e de d

Re me d ia tio n

Re c o mme nd a tio ns

SLIDE 33

Ste p 1

Re gional F low Monitor ing

Divid e d the syste m into 11 d istinc t se we r b a sins
De te rmine d 3 b a sins re q uire d no furthe r inve stig a tio n

SLIDE 34

Ste p 2

Mic r

monitor

ing

Initia te d in the b a sins whic h re g io na l flo w mo nito ring / City

sta ff c o nsulta tio ns d e te rmine d we re wo rst c o ntrib uto rs o f I/ I

67 site s mo nito re d in 3 mo nths (10-15 a c tua l MM’ s w/ 2 sta ff)
Of the 132,043’ o f se we r mo nito re d :
19,047’ o f se we r iso la te d a s e xc e ssive I/ I

so urc e s

26,706’ iso la te d a s mo d e ra te I/ I

so urc e s

De ta ile d SSE

S wo rk will b e fo c use d in the se a re a s

(19,047+26,706) / 132,043 = 35%

“T he e ar ly payoff for the City is not in the se we r s found to c ontr ibute e xc e ssive I/ I, but r athe r in the se we r s that do not c ontr ibute e xc e ssive I/ I that ar e e liminate d fr

m c onside r

ation for additional SSES wor k”

SLIDE 35

Ste p 3

Close d Cir c uit T e le vision (CCT V) Inspe c tion

Co mple te d in two ro unds within se we rs fo und to

c o ntrib ute e xc e ssive o r mo de ra te I/ I

A va rie ty o f de fe c ts disc o ve re d
Struc tura l
I/ I

SLIDE 36

Hole in Pipe

SLIDE 37

Hamme r T ap

SLIDE 38

F r ac tur e d Pipe & Hamme r T ap

SLIDE 39

De posits w/ Infiltr ation

SLIDE 40

Infiltr ation Runne r

SLIDE 41

Infiltr ation Gushe r

SLIDE 42

Root Intr usion

SLIDE 43

Utility line bor e d thr

ugh

se we r

SLIDE 44

Hole w/ soil pour ing in

SLIDE 45

Ana lysis

Syste m Analysis

Ana lysis inc lude d o the r typic a l I/ I

inve stig a tio n wo rk:

Syste m ma pping a nd ve rific a tio n
L

ift sta tio n run time a na lysis

Co mpa riso n o f wa te r use re c o rds with flo w

mo nito ring a nd mic ro mo nito ring da ta

Inte rvie ws with City sta ff to g a in histo ric a l

kno wle dg e o f pro b le m a re a s

Info use d in c o njunc tio n with fie ld wo rk to fo rmula te

va rio us re me dia tio n re c o mme nda tio ns

SLIDE 46

Pre limina ry Re sults

SSE S Re por t

Dra ft F
c use d SSE

S re po rt pre se nte d to City in No ve mb e r 2013 c o nta ine d:

F

lo w mo nito ring re sults

Mic ro mo nito ring re sults
CCT

V Ro und 1 re sults

Additio na l o b se rva tio ns
Re ha b ilita tio n re c o mme nda tio ns
Re c o mme nda tio ns fo r fo c use d SSE

S wo rk in spe c ific a re a s b a se d o n mic ro mo nito ring da ta

Pro je c t fina nc ing re c o mme nda tio ns
Re po rt wa s upda te d a s SSE

S inve stig a tio ns c o ntinue d

SLIDE 47

Da ta Ana lysis

Inflow vs. Infiltr ation Mic r

monitor

ing data analysis c an be use d to dir e c t spe c ific foc use d SSES wor k

Inflo w

SLIDE 48

Othe r SSE S Ac tivitie s

F

c use d SSE

S

Smo ke te sting in iso la te d a re a s in 2014
Additio na l SSE

S a c tivitie s will b e sc he dule d a s ne c e ssa ry b a se d o n the suc c e ss o f re ha b ilita tio n wo rk. T his ma y inc lude :

Dye te sting
Plumb ing inspe c tio ns
Se rvic e la te ra l inspe c tio ns

SLIDE 49

I / I Re me dia tio n

Re habilitation

T

wo pha se s o f pipe a nd ma nho le re ha b ilita tio n we re d e ve lo pe d fro m the first ro und o f CCT V wo rk c o mple te d in 2013

T
ta l pro je c t c o st e stima te ~$2.15M
Inc lud e s:
Ma nho le re ha b ilita tio n
Ma in line CIPP
Ma in line re pla c e me nt
Po int re pa irs
Spo t line rs
Gro ut se a ling
L

a te ra l re pla c e me nt

SLIDE 50

I / I Re me dia tio n

Re habilitation

Additio na l re ha b ilita tio n pro je c ts a re c urre ntly b e ing

de ve lo pe d fro m the se c o nd ro und o f CCT V wo rk c o mple te d in Ma rc h 2014

T

he City se c ure d g ra nts a nd lo w inte re st lo a ns to fina nc e the pro je c ts

Pha se 1 wa s funde d thro ug h the Ohio Pub lic Wo rks

Co mmissio n. T he Pha se I impro ve me nts re sulte d in a 95% re duc tio n in I &I in the pro je c t a re a .

SLIDE 51

Pha se I Re ha b Re sults

SLIDE 52

Ca pa c ity Assura nc e

Mainte nanc e / Capital Impr

ve me nts
Se ve ra l se we r ma ins we re fo und to c o nta in sub sta ntia l

a c c umula tio ns o f d e b ris, whic h will b e tho ro ug hly c le a ne d to inc re a se c a pa c ity

Po te ntia l b o ttle ne c ks d isc o ve re d will b e furthe r

e va lua te d o nc e line s a re c le a ne d a nd I/ I re me d ia tio n is c o mple te

SLIDE 53

Re sults

 T

ta l foota g e e xc lude d by r

e g iona l flow monitor ing = 45,700

 T

ta l foota g e e xc lude d by

mic r

monitor

ing = 86,290

 Re me dia tion e ffor

ts foc use d in a r e a s found to c ontr ibute mode r a te or e xc e ssive I/ I = g r e a tly inc r e a se d odds

f suc c e ssful I/ I r

e duc tion

SLIDE 54

$263,980

Co st sa ving s in CCT V wo rk a lo ne whe n c o mpa ring this a ppro a c h with the tra ditio na l a ppro a c h

SLIDE 55

City of Jac kson

4

2013 & 2014 Mic ro mo nito ring Pro g ra m

SLIDE 56

Curre nt Situa tio n

I/ I in the Colle c tion Syste m

Curre ntly the City’ s sa nita ry se we r syste m is inund a te d with

I/ I tha t c o ntrib ute s to SSO’ s a nd infla te d o pe ra ting c o sts.

Ve ry o ld c o lle c tio n syste m c o mprise d o f ne a rly 90% vitrifie d

c la y pipe (VCP) surc ha rg e s in se ve ra l lo c a tio ns d uring he a vy ra ins.

T

he City e nte re d a c o nse nt d e c re e with the E PA tha t re q uire s c o ntinue d wo rk to e limina te SSO a s we ll a s e xpa nsio n o f WWT P to ha nd le we t we a the r flo ws.

A sig nific a nt a mo unt o f o ld e r se we r line s we re re line d using

CIPP within the la st d e c a d e , b ut this d id no t re d uc e I/ I .

T

he City ha s c o nd uc te d flo w mo nito ring in the pa st with limite d suc c e ss.

SLIDE 57

Purpo se

Goals

T

e st a ne w te c hno lo g y sinc e tra ditio na l me tho ds ha ve b e e n unsuc c e ssful; a sma ll pro je c t wa s c o nduc te d in spe c ific a re a s whe re SSO’ s a re pre se nt

L
c a te a nd re duc e I/ I

in the se a re a s to e limina te SSO

c c urre nc e s a nd the a sso c ia te d pe na ltie s
Ide ntify b o ttle ne c ks a nd o the r de fic ie nc ie s in the

c o lle c tio n syste m

Ide ntify po te ntia l funding so urc e s fo r inve stig a tio n /

re me dia tio n wo rk

T

he pro je c t must b e a ffo rda b le !

SLIDE 58

Pha se 1

Comme nc e d in 2013
Inc lude d 19 MM site s
Wa s c omple te d within 2 months
Re sults!
I

so la te d E xc e ssive I / I to 12,875 fe e t o f se we r ~ 36 % o f study a re a

I

so la te d Mo de ra te I / I to 2,067 fe e t o f se we r ~ 6 % o f study a re a

E

xc lude d 20,875 fe e t o f se we r ~ 58 % o f study a re a fro m furthe r inve stig a tio n

SLIDE 59

F unding

L

c al Gove r

nme nt Innovation F und (L GIF )

T

he City wa s a wa rde d a $100,000 g ra nt a nd wa s a b le to use the Pha se 1 pro je c t a s the ir lo c a l ma tc h o b lig a tio n fo r the L GIF funding pro g ra m thro ug h the Ohio De ve lo pme nt Se rvic e s Ag e nc y

T

his va lua b le re so urc e a llo we d the City to mo ve fo rwa rd with a City-wide mic ro mo nito ring pro g ra m

SLIDE 60

Pha se 2

Comme nc e d in 2014
Inc lude d 65 MM site s
Wa s c omple te d within 4 months
Re sults!
I

so la te d E xc e ssive I / I to 42,619 fe e t o f se we r ~ 32 % o f study a re a

I

so la te d Mo de ra te I / I to 23,540 fe e t o f se we r ~ 17 % o f study a re a

E

xc lude d 69,596 fe e t o f se we r ~ 51 % o f study a re a fro m furthe r inve stig a tio n

SLIDE 61

Ja c kso n Pro je c t Appro a c h

Anothe r c ustomize d appr

ac h… ..
T

he Ja c kso n utilitie s de pa rtme nt o wns a nd ma inta ins c le a ning a nd CCT V e q uipme nt, whic h a llo ws the m to inspe c t se we rs in-ho use

City ha s c o mple te d a va rie ty o f inve stig a tio n a nd

re ha b ilita tio n pro je c ts b ut re a lize d ve ry little I / I re duc tio n

Mic ro mo nito ring thro ug ho ut the e ntire c o lle c tio n syste m

in the upstre a m se we rs wa s the re fo re c ho se n a s the b e st wa y to pro vide the City with a prio ritize d a ppro a c h fo r furthe r inve stig a tio n

SLIDE 62

Summa ry



Mic romonitoring is ve ry fle xible – it c a n b e imple me nte d a s a sta nd a lo ne

pro c e ss o r a s a c o mplime nt to a la rg e r pro je c t.



Mic romonitoring c an be ne fit any size c ommunity that maintains a gravity c olle c tion syste m, fro m the la rg e st c itie s to the sma lle st villa g e s.



Mic romonitoring e nable s the c ommunity to quic kly ide ntify the se we rs c ontributing the gre ate st amounts of I/ I, whic h g re a tly re d uc e s o ve ra ll

pro g ra m c o st while sig nific a ntly inc re a sing the like liho o d o f suc c e ssful re me d ia tio n wo rk.



Mic romonitoring is a tool tha t c o mplime nts the F

c use d SSE

S Appro a c h whe re thro ug h the use o f the mic ro mo nito ryo u c a n na rro w d o wn the so urc e s o f I&I, inve stig a te a nd re pa ir d e fe c ts in a n e c o no mic a l ma nne r tha t g e ts re sults.

SLIDE 63

Que stio ns?

SLIDE 64

Stante c Consulting Se rvic e s, Inc . 1311 We st Hunte r Stre e t L

gan, OH 43138

(740) 380- 2828 (866) 558- 2828

Ga ry D. Silc o tt, Jr., P.E . Princ ipa l g a ry.silc o tt@ sta nte c .c o m