Lake Como Status UpdateLake Como Status UpdateSouth Monmouth Regional South Monmouth Regional

Sewerage AuthoritySewerage Authority

Michael J. Ruppel, Exec. Dir.Michael J. Ruppel, Exec. Dir.

(SMRSA)(SMRSA)

Lake ComoLake Como

• Lake is owned by three Lake is owned by three separate Boroughs. ( 30 Acres)separate Boroughs. ( 30 Acres)

Considered Class III (Low Hazard) Dam by NJDEP

Owned by Belmar, Spring Lake & Monmouth County

Historical FloodingHistorical Flooding• Watershed Driven (rainfall events)Watershed Driven (rainfall events)

• Coastal Storm Surge (Super Storm Sandy)Coastal Storm Surge (Super Storm Sandy)

Outlet plugged

Influent kept comingbut had nowhere to go

Hydraulics/Hydrology (the Hydraulics/Hydrology (the science)science)

Peak Inflow Peak Inflow 2 yr = 1145 cfs (3 in)2 yr = 1145 cfs (3 in)

10 yr = 2186 cfs (5.4 in)10 yr = 2186 cfs (5.4 in) 25 yr = 2873 cfs (6.7 in)25 yr = 2873 cfs (6.7 in) 100 yr = 4191 cfs (9.2 in)100 yr = 4191 cfs (9.2 in)

"One-hundred-year storm" means the storm which is estimated to have a one percent chance, or one chance in 100, of being equaled or exceeded in one year.

(the science) cont’d(the science) cont’d

(the science) cont’d(the science) cont’d

Peak Outflow approx. 40 cfs (when submerged)Peak Outflow approx. 40 cfs (when submerged)

Pond storage capable of Pond storage capable of handling a 10 yr storm event handling a 10 yr storm event (5.4 in)(5.4 in)

Tidal Influence

Lake Como’s Effect on SMRSALake Como’s Effect on SMRSA• TwoTwo pumppump stations devastated stations devastated

(Lake Como & Pitney Ave)(Lake Como & Pitney Ave)

• Loss of Service for seven days Loss of Service for seven days

• $ 2.88 million in damages (Sandy)$ 2.88 million in damages (Sandy)

• $ .963 million in damages over $ .963 million in damages over past seven years (LC PS) past seven years (LC PS)

• and…..and….. Potential flooding of WWTP which isPotential flooding of WWTP which is

surrounded by major contributory to Lake Comosurrounded by major contributory to Lake Como..

Add Sea Level RiseAdd Sea Level Rise

Does not include other effects of Climate ChangeDoes not include other effects of Climate Change i.e.( increased rainfall intensities, etc.) i.e.( increased rainfall intensities, etc.)

Temp Emergency MeasuresTemp Emergency Measures• 80 MGD pump system80 MGD pump system

(123.79 cfs) since removed(123.79 cfs) since removed

• Temp PVC outfall line Temp PVC outfall line (40 cfs)(40 cfs)

• Four 18” DIP pump discharge lines Four 18” DIP pump discharge lines installed beneath Ocean Aveinstalled beneath Ocean Ave

Moving ForwardMoving ForwardProtecting Protecting Infrastructure/ResidentsInfrastructure/Residents• SMRSA – Lake Como PS RelocationSMRSA – Lake Como PS Relocation

Pitney Ave PS Mobile Enclosure Pitney Ave PS Mobile Enclosure • ““Lake Como” – IssuesLake Como” – Issues

- Stakeholders/Ownership?- Stakeholders/Ownership?

- Funding?- Funding?

- Level of resiliency?- Level of resiliency?

- Regulatory?- Regulatory?

- Temp. Planning/ Future Schedule?- Temp. Planning/ Future Schedule?

Questions?Questions?

Michael J. RuppelMichael J. Ruppel

exdir@smrsa.orgexdir@smrsa.org

www.smrsa.orgwww.smrsa.org