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HURRICANE SANDY HURRICANE SANDY

HURRICANE SANDY - PowerPoint Presentation

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HURRICANE SANDY - PPT Presentation

PASSAIC VALLEY SEWAGE COMMISSION AIR MONITORING PROJECT JEFF MEYER NORTHERN REGIONAL OFFICE AIR COMPLIANCE AND ENFORCEMENT HURRICANE SANDY HURRICANE SANDY IMPACT AREA HURRICANE SANDY STORM PATH ID: 236118

sludge pvsc njdep odor pvsc sludge odor njdep dewatering temporary processing centrifuges area surveillance sandy hurricane equipment significant sulfide treatment plant storm

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Slide1

HURRICANE SANDYPASSAIC VALLEY SEWAGE COMMISSION AIR MONITORING PROJECTJEFF MEYERNORTHERN REGIONAL OFFICE AIR COMPLIANCE AND ENFORCEMENTSlide2

HURRICANE SANDYSlide3

HURRICANE SANDY IMPACT AREASlide4

HURRICANE SANDY STORM PATHSlide5

HURRICANE SANDY STORM SURGESlide6

PASSAIC VALLEY SEWAGE COMISSIONThe Passaic Valley Sewerage Commission (PVSC), established in 1902 by an Act of New Jersey State Legislature, began operation of the Newark Bay Treatment Plant in 1924 as a means to alleviate pollution in the Passaic River and its tributaries.

Major expansions, upgrades and renovations throughout the twentieth century have made the PVSC one of the largest wastewater treatment plants in the United

States.

PVSC is designed to treat 330 million gallons per day (

mgd

), with an annual daily average of 220

mgd

.

PVSC serves 1.4 million residents in parts of Bergen, Hudson, Passaic, Essex and Union

Counties

PVSC serves approx. an additional 2 million residents throughout the States of NJ and NY through its Liquid Waste Acceptance Program

Slide7
Slide8

HURRICANE SANDY DAMAGEDue to damage caused by the storm surge from Sandy, PVSC’s entire treatment plant was taken out of service on the evening of the storm at approx. 9PM, Oct. 29thAll connected flows were brought back into the plant by Nov.

3rdFlooding in the utility tunnels and galleries damaged electrical systems and pumping equipmentSlide9

FLOODED GALLERYSlide10

WALKWAYS UNDERWATERSlide11

PVSC sent out over 500 motors for repairsSlide12

PORTABLE PUMPSlide13

DISPLACED DOCKSlide14

ARMY CORPS PUMPSSlide15

DAMAGE TO PVSCPVSC’s damaged equipment included its sludge dewatering processes including its Thickening Centrifuges, Zimpro Process, Decant Settling Tanks and Filter Press Dewatering.An alternate method of sludge processing had to be onsite until PVSC could repair its existing equipment.The potential for offsite odors in a highly urbanized area was high.Slide16

EXISTING SLUDGE PROCESSING STACKSSlide17

DAMAGE TO PVSCPVSC contracted with Synagro to bring 10 mobile dewatering centrifuges onsite to dewater the solids. Slide18

TEMPORARY CENTRIFUGE PADSlide19

TEMPORARY SLUDGE PROCESSINGSynagro was dewatering solids 1 week from the start of its site preparation.  They brought their own generators to power the equipment, constructing the solids conveying systems, sludge pumping and piping for liquid sludge delivery to the machines and the centrate return to PVSC’s plant. Slide20

EMERGENCY GENERATOR TRAILERSSlide21

CENTRIFUGE PIPINGSlide22

TEMPORARY SLUDGE PROCESSINGThe dewatered biosolids were trucked offsite for disposal.The temporary dewatering operations were in the open air, on a PVSC access street. Slide23

TEMPORARY SLUDGE HOLDING AREASlide24

TEMPORARY SLUDGE PROCESSINGSynagro began dewatering on November 23rd with 10 centrifuges.  The centrifuges were phased out as PVSC’s own dewatering equipment became available in mid December.  Slide25

OPERATING CENTRIFUGESSlide26

NJDEP RESPONSE NJDEP contacted PVSC customers to request voluntary reduction in discharge to PVSC.NJDEP Commissioner requested that PVSC phase in of sludge treatment equipment ensure no significant odor in the residential community. 

NDEP and USEPA set up a temporary Hydrogen Sulfide monitoring system .Slide27

PVSC ONSITE HYDROGEN SULFIDE MONITORSlide28

FERRY ST. HYDROGEN SULFIDE MONITORSlide29

HYDROGEN SULFIDE MONITORINGNJDEP and EPA coordinated the placement of H2S monitors in and around PVSC. A total of 6 monitors were located on PVSC property An additional four monitors were located off site. Weather data was obtained from the NOAA weather station at Newark International airport Fence line Action Levels -  

Alarm trigger set at less than 42 ug

/m3 H2S  1 hour average at the PVSC

fenceline

.  This is the California reference level for adverse health effects, including headache and

nausea

.  

The

 residential community

trigger was set below

the odor detection threshold of  5 to 11

ug

/m3. 

 

Significant

odor potential in the community would require reduction in sludge processing.

Therefore, NJDEP Investigators conducted 24 hour odor surveillance around PVSC to ensure no odors were leaving the PVSC property.Slide30

NJDEP ODOR SURVEILLANCE ROUTESlide31

NJDEP ODOR SURVEILLANCEOdor Surveillance -  Enforcement conducted patrols of the area as the centrifuges were phased in to determine if there was significant odor in the residential communities (Ironbound, Bayonne, JC, Kearney).  The greatest odor potential was most likely at night during inversion meteorological

conditions.  

Protocol for communication with PVSC on significant odor and

actions

to decrease sludge processing

was developed

. Slide32

CONCLUSIONS24 hour odor surveillance was conducted in the areas around PVSC from November 14th through November 26th .No significant offsite odors were observed by NJDEP investigators.No complaints were received by the NJDEP Communications Center within the area around PVSC and surveillance area.Slide33

QUESTIONS?