MM R P P R E S EN T A T I O N T O I A C R E S I DEN T S O F : 35 O - - PowerPoint PPT Presentation

MMRP – PRESENTATIO N TO IA C

RESIDENTS O F: 35 O ’SHA N ASSY STREET, N ORTH MELBO URNE

ASSUMED LO C ATIO N C HARA CTERISTICS

Sourc e: EES-C h a pter 13- Noise & Vibra tion (p a g e 13 -1)

N ORTH MELBO URNE LO C ATIO N C HARA CTERISTICS

Th e w orst effe cte d house in Ard e n pre cin ct

• No High-rises
• No c ontinuous or intermitte nt

tra ms or trains noise a nd vibra tion

• No m ajor arterial ro a ds noise
• No h e a vy v e hicle tra nsp ort
• No m ajor public e v e nts
• No noise a nd vibra tion fro m

m ajor c onstru ction sites in close proximity

• Single or d ouble storeys

fre esta nding d w ellings, with living are as on ground or b elo w ground le v el (ofte n Herita g e liste d) – THE M OST VULNERABLE Pote ntially th e w orst affe cte d are a on th e e ntire M MRP route

DIVERSE C HARA CTERISTICS O F DIFFERENT PRECIN CTS ALO N G THE RO UTE MUST BE C O NSIDERED A ND MUST BE IN C ORPORATED IN TO DESIG N C O NSTRAINTS A ND SOLUTIO NS

C O MMUNITY EN G A GEMENT

TUNNEL DEPTH:

• Approx. 17m (28/10/2015

C O MMUNITY CENTRE, N ORTH MELBOURNE)

• Approx. 20m ( Letter fro m

MMRA 28/Ja n/2016, Ref: D O C /16/4851

• Approx. 13m – EES d o c um e nts

– Se ction dra wing – Ard e n tunn el pre cin ct Western Distributors information info booth. Good example of community consultation. Located in front of library for 7 consecutive days.

RO UTE ALIG NMENT

TUNNEL ROUTE: Curzon, O’Shanassy & Courney Streets

RO UTE ALLIG NMENT

Errol Street, O’Shanassy Street & Curzon Street

PO OR DESIG N PRA CTICE

Po or D esign Pra ctic e

Th e sh allo w est tunn el un d er th e m ost vuln era ble resid e ntial are a Th e high est non c o m plia n c e along th e sh allo w est p art of th e tunn el

• “Best pra ctic e should a c hie v e th e high est

qu ality outc o m es through d esign N OT through mitig a tion, retrofit or re nov a tion” – City O f

M elb ourn e EES Sub mission

• M MRA e m ploys risky, p o or d esign pra ctic e

involving:

• D esigning to m aximum allo w e d v alu es

(noise a nd vibra tion)

• Exc e e ding m aximum allo w e d v alu es
• A c hie ving c o m plia n c e through mitig a tion
• This results in lo w tunn el d e pth a nd p ote ntial high

im p a ct during c onstru ction tim e a nd ong oing issu es with o p era tion al noise a nd vibra tion

PO OR DESIG N PRA CTICE

Wh a t if mitig ation interv e ntion fails?

Source: EES: Technical Appendix: E - Figure E 26

• Wh a t if mitig a tion d o esn’t d eliv er exp e cte d results?
• Wh a t is th e pla n “B” c onsid ering th a t a t th a t sta g e th e

tunn el c a n’t b e lo w ere d a nd th a t high er mitig a tion te c hniqu e d o esn’t exist (Ard e n pre cin ct re quires “v ery high a tte nu a tion” to a c hie v e minimum re quire m e nts)?

• Who will m onitor th e a ctu al le v els of o p era tion al a nd

m ainte n a n c e noise a nd vibra tion? (M MRA h a v e v este d interest in th e proje ct a nd is not c onsid ere d “ind e p e nd e nt”, M MRP is a PPP proje ct – c ould th e m onitoring e nd up in th e h a nds of a priv a te c orp ora tion a nd ho w w ould th e c orp ora tion prote ct th e interest of resid e nts vs profit?)

• Who will d e al with c o m plaints a nd claims arising fro m

exc e e d e d le v els of o p era tion al vibra tion a nd noise, a nd ho w w ould th e affe cte d resid e nt b e c o m p e nsa te d (whic h A ct c ov ers th ese situ a tions?)

THE TUNNEL DEPTH

Im p a ct at pro p ose d Tunn el D e pth Pro p ose d Tunn el D e pth

Approx. 12-13 m Houses with below ground living or working areas TUNNEL DEPTH INFORMATION AS PROVIDED BY MMRA:

• Approx. 17m (C o m munity C onsultation: 28/10/2015

C O MMUNITY CENTRE, N ORTH MELBOURNE)

• Approx. 20m ( Letter fro m MMRA 28/Ja n/2016, Ref:

D O C /16/4851

• Approx. 13m – EES d o c um e nts – Se ction dra wing –

Ard e n tunn el pre cin ct

OPERATIO N AL N OISE A ND VIBRATIO N

Existing Baselin e Noise a nd Vibration M e asure m e nt – Tunn el Pre cin ct

• M e asure m e nt of existing (extern al a nd intern al)a m bie nt

noise a nd vibra tion not c ondu cte d along ‘Tunn el pre cinct”

• Existing noise a nd vibra tion m e asure d on lo c a tions: not

rela te d to M MRP route a nd not “ e quiv ale nt” to tunn el pre cinct lo c a tion

• Working with in a d e qu a te b aselin e noise a nd vibra tion

p ara m eters might im p a ct/influ e n c e pre dicte d noise a nd vibra tion le v els

• M MRA sta tes th a t intern al m e asure m e nt of existing

noises a nd vibra tion le v els in existing houses a b ov e th e tunn el pre cin ct is not re quire d. C o m munity disa gre e.

EES_Chapter 13- Baseline Vibration Measurement EES_Chapter 13- Baseline Noise Measurement

OPERATIO N AL N OISE A ND VIBRATIO N

“Vibration C ondition” classific ation

• EES classifies o p era tion al vibra tion as “intermitte nt” a nd b ase

c alc ula tions of pre dicte d vibra tion d ose v alu e on th a t criteria.

• This c ondition classific a tion d o esn’t re prese nt th e c ondition of
• p era tion al vibra tion a c c ura tely c onsid ering th a t pre dicte d

train fre qu e n cy in e a c h tunn el will b e 1-3 min.

• If vibra tion c alc ula tion is b ase d on “intermitte nt classific a tion”

th a t would allo w for mu c h high er vibra tion v alu es, a nd would h a v e a mu c h m ore signific a nt im p a ct on affe ct resid e nts living a b ov e tunn el

• Th e Vibra tion c ondition sh all b e classifie d as “ C ontinuous” in

a c c ord a n c e to EES’s Sum m ary se ction d escription of servic es as: “…continuous trains elimin a ting th e n e e d for tim eta bling.”

INTERMITTENT: c o ming a nd g oing at interv als : not c ontinuous. Starting,

sto p ping, a nd starting a g ain : not c onsta nt or ste a dy.

Sourc e: M erria m-W e bster

Diction ary C O NTINUO US Vibra tion c ontinu es uninterrupte d for a d efin e d p erio d of tim e (usu ally throughout d a ytim e a nd / or night-tim e).

Sourc e: BS 6472–1992

0.5-1.5 Min

Level of continuous noise?

OPERATIO N AL N OISE A ND VIBRATIO N

O p eration al Noise O p eration al Vibration

Sourc e: MMRA – Briefing to North M elb ourn e resid e nts, July 2016

Pre dicte d c ontinuous o p era tion al ground b orn e noise le v el: Pre dicte d c ontinuous o p era tion al ground b orn e vibra tion le v el: Wh a t is th e physic al interpreta tion

• f th e pre dicte d c ontinuous

ground b orn e noise le v el a nd ho w it c o m p ares with existing noise le v els?

Sourc e: MMRA – Briefing to North M elb ourn e resid e nts, July 2016

Wh a t is th e physic al interpreta tion

• f th e pre dicte d c ontinuous

ground b orn e vibra tion le v el a nd ho w it c o m p ares with existing vibra tion le v els?

PRO JECT RISKS: TUNNEL PRECIN CT – GREY AREAS

Discrimin atory D esign C onstraints – Tunn el Pre cin ct

• D esign Criteria In clud e: Users c onv e nie n c e a nd e ase of

a c c ess, o p era tion al c onstraints, im p a ct on busin esses a nd institutions, proje ct c ost & d eliv ery tim e

• D esign Criteria Exclud e: im p a ct on resid e nts living a b ov e

th e “Tunn el Pre cin ct” Resulting in:

• Po or d esign outc o m e - th e lo w est tunn el d e pth und er th e

m ost vuln era ble resid e ntial are as, rela ying on a v ery high a tte nu a tion to b arely m e et minimum noise a nd vibra tion re quire m e nts prescrib e d by th e rele v a nt guid elin es.

• La ck of c onsid era tion of th e M MRP im p a ct on resid e nts

living a b ov e th e “Tunn el pre cin ct”. Typic ally, m ajority of im p a ct a n alysis in EES fo c us on sta tion pre cin cts.

• EES d o es not provid e a n alysis on bio div ersity of

existing flora a nd fa un a a b ov e “Tunn el Pre cin ct” a nd p ote ntial M MRP’s im p a ct on th e m.

• V ery sh allo w tunn el d e pth (a p prox. 13m) might

h a v e a n im p a ct on v ery old, esta blish e d Pla ta nus tre es with a substa ntial ro ot syste m a nd in-ground fa un a (ground b orn e noise).

Tunn el Pre cin ct – Flora & Fa un a

PRO JECT RISKS: TUNNEL PRECIN CT – GREY AREAS

EES b ase d on limite d existing c ondition surv ey of “Tunn el pre cin ct” :

• La ck of “Tunn el Pre cin ct” are a surv ey a nd

und ersta nding of sp e cific lo c a tion c h ara cteristics. (city vs inn er city n eighb ourho o d c h ara cteristics).

• N e w d e v elo p m e nt und er c onstru ction on th e c orn er of

Ard e n a nd A b b otsford stre et with a total d e pth (in cluding footings) of 10-12m b elo w n a tural ground le v el. Th e tunn el runs und er th e site.

• A num b er of houses along th e Tunn el Pre cin ct h a v e

und erground living sp a c es. It se e ms th a t EES d o esn’t in clud e d etaile d surv ey th a t w ould allo w re alisa tion th a t th e tunn el d e pth und er so m e houses will b e only a b out 7m -8m.

• Existing intern al a nd extern al b aselin e noise a nd vibration

m e asure m e nt not c ondu cte d along th e “Tunn el Pre cin ct”.

PRO JECT RISKS: TUNNEL PRECIN CT – GREY AREAS

So cial Im p a ct:

Pla nning C ontrols:

• City of M elb ourn e also raises th eir c on c ern a b out MMRA ’s

pro p osal to exclud e tunn els fro m d e v elo p m e nt pla n th a t is subje ct to Pla nning A p prov al (City of M elb ourn e EES draft sub mission; Se ction 13.2.1 A p prov al of D e v elo p m e nt Pla ns (p a g e 104)): "Although th e In c orp ora te d Do c um e nt f a cilit ates th e use a nd d e v elo p m e nt of la nd for th e e ntire proje ct in cluding tunn els as w ell as st a tion, p ort als a nd asso cia te d infrastru cture, th e re quire m e nt to sub mit a d e v elo p m e nt pla n for a p prov al rela tes only to th e p arts of th e proje ct a b ov e a nd a t ground le v el a nd up to tickete d are as." "Th e pla nning a p prov al will b e th e prim ary st a tutory a p prov al for th e e ntire proje ct. As su c h, it is sub mitte d th a t it should re quire d e v elo p m e nt pla ns to b e sub mitte d for th e e ntire proje ct."

• So cial im p a ct on are as a b ov e th e und erground tunn el like:

traffic closure, c ong estions a nd relo c a tions, are also not a d dresse d by EES.

• City of M elb ourn e EES Draft Sub mission (So cial im p a ct a nd

displa c e m e nt: CBD South Sta tion - ”Th e EES d o es not sa tisfa ctorily a d dress th e so cial im p a cts of th e proje ct on all se ctions of th e c o m munity a nd th e displa c e m e nt of vuln era ble c o m munities."

C O MPENSATIO N A ND D A M A GES

Tunn el Pre cin ct M a p DD O M a p A c quisition M a p

?