Joe Olewnicki, P.E., Division Chief

Division of Capital Maintenance

What DEP Does

Supplies drinking to New York City+

Protects the water quality of NYC waterways by sewage treatment and storm water management

Protects the air quality of NYC

In general, ensures NYC compliance with the Federal Clean Water Act and Clean Air Act

Bureau of Wastewater Treatment

• Handles and treats all sewage for the 5 boroughs of NYC

• Operates and Maintains

14 Sewage Treatment Plants

6 Sludge Dewatering Facilities

3 CSO Facilities

2 Aeration Facilities

98 Pumping Stations

500+ Outfalls

138 miles of sewage interceptors

BWT Engineering

Division

Director

Bureau Wastewater Treatment

Asset Management & Capital Projects

Project Coordination

Capital Maintenance

Infrastructure Sustainability

Planning

DepartmentEnvironmental

Protection

USEPA NYS-DEC

Typical Sewage Treatment Plant

Major Mechanical Systems

• Main Sewage Pumps

• Other process pumps

• Mechanical Bar Screens

• Process Compressors/Blowers

• Chain & Flight Collectors

• Digester Gas Collection Systems

• Cogen Power Systems

• Emergency Power Systems

• Dewatering Centrifuges

• Solid Handling Conveyor Belts

• HVAC

Division of Capital Maintenance

Division of

Capital Maintenance

Mechanical Engineering

Section

Electrical Engineering

Section

Structural Engineering

Section

Construction Management

Section

22 Mechanical Engineers

17 Electrical Engineers

15 Civil Engineers

4 Engineers of Various Background+ consultant support

Design Goals

Design

Energy Efficiency

Maintainability

Function

Pumps, Valves, & Pipes

• Main Sewage Pumps• PC pumps• Lobe pumps• Chemical pumps• Plug valves• Cone valves• Check valves• Butterfly valves• Gate valves• Sluice Gates ASME B31.3 Process Piping Standard

Capital Program

$55 Million Annually – Job Order Contracting (JOC)

$20 Million Annually – Specific Design Capital Contract Construction

$50 Million Annually – Capital Contracts with New York Power Authority

Main Sewage Pump Upgrade

$7,000,000 upgrade

100MGD per pump

Restore 5 to 10 MGD per pump

Horizontal Split Case Pump by Flowserve

Design by DEP

Installation by Welkin

CM by D&B Engineers & Architects

Conveyor Belt Upgrade

$20,000,000 Conveyor Upgrade

• 4 Dewatering Facilities

• 14 main conveyors

• 44 cross conveyors

• 14 shuttle conveyors

• Simplify conveyor system

• Increase conveyor capacity

• Eliminate rinse water

• Reduce residual water in biosolids

DEP Engineers

D&B CM

Welkin contracting

Bar Screen Upgades

Mechanical Bar Screen Protect All Treatment Plant Inflow

• Recent DEP Design Projects

• Jamaica WPCP 2012

• 26th Ward WPCP 2010

• Bowery Bay WPCP current

26th Ward Screen

Jamaica ScreensElectric Drives

Hydraulic Drives

Rack & Pinion Systems

Mechanical Linkage Assemblies

Numerous Maintenance Enhancements

Carriages function in hazardous gas and wet or dry conditions

Digester Gas & Engine Upgrade

$40,000,000 Combined Upgrade

• DEP & NYPA Project

• Project Team

• AECOM

• Vronay Engineering

• Advanced Engine Technologies Corp

• Hoerbiger Engineering

• GE

• Existing 1980 GE/Enterprise Engines• New engine controls• New micro-pilot fuel injectors• Reduce Diesel Emissions• Reduce fuel oil consumption to <2%• Reduce Greenhouse Gas Emissions (3,000 metric tons CO2/yr)

Digester Gas & Engine Upgrade

To Flare

To Building Heating

To Digesterand Building Heating

Minimal PowerTo WPCP

Modify the engine fuel gas system

Dewatering Centrifuge Upgrade

DEP & NYPA Project

Designs by CDM-

Smith and Arcadis

3 Major Projects

• Total $60,000,000

• 3 Facilities

• 52 Centrifuges

• Numerous ancillary systems

Replace c1992

centrifuges

• Increase machine throughput

• Improve energy efficiency

Emergency Structural Repair

North River Expansion Joint

The Challenges

• Stop a Large Leak

• No Existing Engineering Solution

• pressure

• size

• movement

• Requires a 3 day partial plant shutdown with several small full shutdowns

The Actions

• Develop a New Design

• Develop an Installation Plan

• Coordinate the needed shutdown with Plant Operations, SPDES Compliance, and BWT Management

DEP Engineers CM by Arcadis

DEP NR Operating Staff SHEELA Construction

Emergency Structural Repair

Emergency Structural Repair

Before

After

Emergency Repair

Pump Station Force Main in Staten Island

• Pipe installed in 1968

• Station upgraded in 1995

• 24” force main

• 15MGD Maximum Flow maintained by temporary bypass piping

DEP Engineers

Arcadis CM

DEP Collection Facilities Crews

Delphi contracting

Emergency - Sandy Recovery

Phase 1

• Restore Flow with Portable Units

• 3 Days

Phase 2

• Short Term Restoration of Electric Utility Functionality

• 2 Months

Phase 3

• Full Long Term Repair

• 7 Months

• $10,000,000 total cost

• DEP Design

• CM Services by D&B

• Prime JOC contractor WDF

• Field Services by DEP Collection Facilities

Assigned 7 Submerged

Pump Stations

Public Image

Skills for Engineers

Technical Design

Can Do Attitude

Integrity of Work

Get the Job Done

Communication

• Writing

• Speaking

• Diplomacy

Team Work

Team Effort

Deal-in

• Other design sections

• Planning groups

• Plant staff

• Process staff

• Safety staff

Communication

Communication

• Within work group

Communication

• With Engineering Partners

Communication

• With Key Stakeholders

Communication

• With Supervisors