Sto rmwa te r Qua lity Pla ns July 26, 2017 He rbe rt, Rowla nd - - PowerPoint PPT Presentation

We st Goshe n T

• wnship

Sto rmwa te r Qua lity Pla ns

July 26, 2017

He rbe rt, Rowla nd & Grubic , Inc .

• He a dq ua rte re d in Ha rrisb urg , PA
• +200 e mplo ye e s
• Munic ipa l se rvic e s fo r +50 ye a rs
• E

r in L e tavic , M.E ng, P.E ., Pro je c t Ma na g e r

– 13 ye a rs MS4 e xpe rie nc e – e le ta vic @ hrg -inc .c o m

MS4 Pe r mit

• NPDE

S (National Pollutant Disc har ge E limination Syste m) Ge ne r al Pe r mit (PAG- 13) or Individual Pe r mit (IP) for Stor mwate r Disc har ge s fr

• m Small

Munic ipal Se par ate Stor m Se we r Syste ms (MS4s)

– WAT

E R QUAL IT Y PE RMIT

– Stor

mwate r r unoff c ar r ie s pollutants

MS4 (Munic ipa l Se pa r a te Stor m Se we r Syste m)

T he syste m within the “Urb anize d Are a” tha t c o lle c ts, c o nve ys, o r ma na g e s sto rmwa te r

• Pipe s
• I

nle ts

• Swa le s
• De te ntio n BMPs
• I

nfiltra tio n BMPs

• Wa te r Qua lity BMPs
• Outfa lls – Go o se Cre e k, Christina Rive r, E

a st Bra nc h Che ste r Cre e k, Che ste r Cre e k

T wo Stor mwate r Runoff Pr

• ble ms
• E

c o no mic Pro g re ss (la nd de ve lo pme nt)

– Pro b le m # 1: I

nc re a se in quantity

– Pro b le m # 2: De c re a se in quality

• Ag ing I

nfra struc ture

– Pro b le m # 1: F

unding c ha lle ng e s

– Pro b le m # 2: Wha t de sign sta nda rds?

Sanitary Se we r Storm Se we r

(T re a te d) (Untre a te d)

Stor mwate r Pollutants

• Se dime nt
• Nutrie nts (nitro g e n &

pho spho rus)

• Ba c te ria
• Oxyg e n De ma nd
• Oil a nd Gre a se
• Me ta ls
• T
• xic Che mic a ls
• Chlo ride s
• T

he rma l I mpa c ts

• Pe stic ide s & He rb ic ide s

De lawar e Bay

Impair e d Wate r she ds

• Se dime nt
• Nutrie nts

(nitro g e n & pho spho rus)

Chr istina Rive r & Goose Cr e e k (T

• tal Maximum Daily L
• ads)

Pollutant Re duc tion Re quir e me nts

Goose Cr e e k T MDL (T

• tal Maximum Daily L
• ad)

Po lluta nt: Pho spho rus Re q uire d Re duc tio n: 54% (Pro te c tio n o f a q ua tic life )

Br andywine Cr e e k/ Chr istina Rive r T MDL (T

• tal Maximum Daily L
• ad)

Po lluta nt: Se dime nt Re q uire d Re duc tio n: 61% (Re sto re re c re a tio n a nd pro te c tio n o f a q ua tic life )

Che ste r Cr e e k/ E ast Br anc h Che ste r Cr e e k PRP (Pollutant Re duc tion Plan)

Po lluta nt: Se dime nt Re q uire d Re duc tio n: 10%

T MDL Pla n De ve lopme nt

• Pre vio usly de ve lo pe d in

2015

• Upda te d in 2017

– Ne w MS4 Re q uire me nts – E

a st Bra nc h Che ste r Cre e k/ Che ste r Cre e k I mpa irme nt

– Upda te d stre a m

re sto ra tio n c re dit

• Mo de ling

– Ma pShe d So ftwa re Bic king Ba sin Re tr

• fit

2018 Pe rmit Imple me nta tion

• Pe rmitte e s a re automatic ally e xpe c te d to c omply

with la te st pe rmit te rms.

 Po llutio n Co ntro l Me a sure s (PCMs)  Upda te d list o f a utho rize d no n-sto rmwa te r

disc ha rg e s

 I

nc re a se d pub lic invo lve me nt

 Cle a re r re q uire me nts re q uiring pub lic a c c e ss

 Upda te d T

MDL a nd ne w Po lluta nt Re duc tio n Pla ns

2018 Pe rmit Re g ula tory Cha ng e s

Po llutio n Re duc tio n Plans (PRPs)

• PRP re q uire me nt e xte nde d to a wide r g ro up o f

MS4s.

• PRPs re q uire d fo r a ll wa te rs impa ire d b y nutrie nt
• r se dime nt lo a ding s tha t do no t ha ve a T

MDL .

• Just ha ving a pla n is no t e no ug h; the pla n

ne e ds to b e imple me nte d in a de mo nstra tive wa y.

• Pro je c t imple me nta tio n in a 5-ye a r pe rio d –

c o mple tio n b y 2023.

2018 Pe rmit Re g ula tory Cha ng e s

Po llutio n Re duc tio n Plans (PRPs)

• PRP Re quir

e me nt T able pro vide d in the dra ft pe rmit

ide ntifie s spe c ific re q uire me nts re la ting to re me dia tio n o f impa ire d wa te rs (pre -T MDL ).

• T

he se re q uire me nts g o above and be yond imple me nta tio n o f the MCMs a s pa rt o f a n MS4’ s sto rmwa te r ma na g e me nt pro g ra m.

2018 Pe rmit Re g ula tory Cha ng e s

PRP Re quir e me nts T able

• Se le c tio n o f impa ire d wa te rs

inc lude d o n T a b le

• 5-mile b uffe r dra wn a ro und

e a c h munic ipa lity’ s urb a nize d a re a (UA)

• Dra ina g e a re a s

de line a tio n within the b uffe r

• I

f sto rmwa te r fro m UA wa s e xpe c te d to flo w into impa ire d wa te rs within the b uffe r, impa ire d wa te rs we re se le c te d fo r the T a b le

2018 Pe rmit Re g ula tory Cha ng e s

T MDL Plans

Cur r e nt Pe r mit

• T

wo -pa rt T MDL Pla n

• T

MDL Stra te g y with NOI / a pplic a tio n

• T

MDL De sig n de ta ils due 1 ye a r a fte r pe rmit issua nc e

• T

MDL Pla n re q uire d fo r a ll po lluta nts with a n “a pplic a b le WL A”

• MS4 e lig ib le to b e

c o ve re d unde r PAG-13 2018 Pe r mit

• One T

MDL Pla n

• Nutrie nts/ se dime nt WL

A

• T

MDL Pla n re q uire d

• No t e lig ib le fo r PAG-13

pe rmit

• WL

A fo r o the r po lluta nt (no t nutrie nts/ se dime nt)

• T

MDL pla n no t re q uire d, PAG-13 re ma ins a n

• ptio n

T MDL Pla n De ve lopme nt

• Mo de ling

– Ma pShe d So ftwa re – Po lluta nt lo a ding

a ssumptio ns a c c o rding to la nd use & instre a m e ro sio n

– BMP b e ne fits

• De te ntio n b a sin

na tura liza tio n

• Stre a m b uffe rs

T MDL Pla n De ve lopme nt

• De te ntion basin

natur alization

• Stre a m

re sto ra tio n/ b uffe r

T MDL Pla n De ve lopme nt

• De te ntio n b a sin

na tura liza tio n

• Str

e am r e stor ation/ buffe r

Short- te rm Se dime nt L

• a d Re duc tion
• Co mb ine d Pla nning Are a
• F
• c us pro je c ts within T

MDL wa te rshe ds

Short- te rm Se dime nt L

• a d Re duc tion

Propose d Imple me nta tion Sc he dule

L

• ng - T

e rm Polluta nt L

• a d Re duc tion

Ne xt Ste ps

• Public c omme nt pe r

iod c lose s August 25, 2017

• Re vise r

e por t Se pte mbe r 2017

• Submit r

e por t Se pte mbe r 15, 2017

• Imple me ntation – upon Individual Pe r

mit Appr

• val

Que stions?