Trenchless Technology: Trenchless Technology: - NC AWWA-WEA

Transcription

FALL 2015
Trenchless
Technology:
NOT A BORING SUBJECT
NC AWWA-WEA
NC AWWA-WEA
3725 National Drive, Suite 217
Raleigh, NC 27612
ADDRESS SERVICE REQUESTED
95th Annual
Conference
November 15-18, 2015
Raleigh Convention Center | Raleigh, NC
The official publication of The North Carolina Section of the American Water Works Association (NC AWWA)
& The North Carolina Member Association of the Water Environment Federation (NC WEA)
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3725 National Drive, Suite 217
Raleigh, NC 27612
Phone: 919-784-9030
Fax: 919-784-9032
Executive Director: LINDSAY ROBERTS
[email protected]
Focus Areas: Board of Trustees, Legal & Regulatory Issues,
Conference Planning, Policy Development,
Budget & Finance Administration
Financial Assistant: MARIANNE KESER
[email protected]
Focus Areas: Professional Wastewater Operators Committee,
Exhibits, Financial Data Entry and Reports, Job Ads, Sponsorships
Director of Education: CATRICE R. JONES
[email protected]
Focus Areas: Seminars, elearning, Schools and Conferences
Membership and
Communications Director: NICOLE BANKS
[email protected]
Focus Areas: NC Currents Submissions,
Web Site Information (submissions, updates, etc.),
eNews Submissions, Sponsorships, Membership
External Committee Services Coordinator: ERIN MALLIS
Focus Areas: Awards, Public Education Committee,
Water For People Committee, Students & Young
Professionals Committee, Membership Support
24
34
92
FEATURES
NC AWWA-WEA 95th Annual Conference ........................................ 39
NC AWWA-WEA 15th Annual Spring Conference............................. 57
Trenchless Technology:
Special Section: Trenchless Technology..................................................... 61
What is Trenchless Technology?.............................................................................. 62
NC Currents is the official publication of the NC AWWA-WEA.
Members and non-members, individuals and committees are
encouraged to submit content for the magazine. If you would
like to submit an article to be considered for publication in
NC Currents, please email it to [email protected].
Tunnel Vision – A Primer on Trenchless Construction Methods
and Experiences for Pipelines in the Piedmont Geology..................................... 66
Submission Deadline:
Winter 2015/16 - October 5, 2015
Spring 2016 - Early January 2016
Summer 2016 - Early April 2016
Fall 2016 - Early July 2016
Two New Promising Tools for the Condition Assessment
of Ferrous Pressure Pipelines..................................................................................... 74
Getting Reacquainted with Sewer Rehab.............................................................. 70
Plan B for HDD: Customizing a Challenging Installation..................................... 78
North Carolina Takes the Lead in
Water Main and Force Main Pipe Bursting............................................................ 82
NC Currents is produced
by the Communication Committee.
Chair: Sherri Moore - City of Concord,
Vice Chair: Mike Shelton - Kimley-Horn Associates,
Editorial Subcommittee:
Tom Bach - City of Concord;
Kelly Boone - CDM Smith;
Marianna Boucher - McKim & Creed;
Steve Hilderhoff - GHD;
Marco Menendez - McAdams;
Sherri Moore - City of Concord;
Wade Shaw - City of Raleigh;
Mike Shelton - Kimley-Horn;
Marie Sugar - STV
NC Currents is published by
Tel: 866-985-9780
Fax: 866-985-9799
www.kelmanonline.com
Managing Editor: Christine Hanlon
Design/layout: Jackie Magat
Sales Manager: Al Whalen
Advertising Coordinator: Stefanie Hagidiakow
All rights reserved. The contents of this publication may not be reproduced
in whole or in part without the express consent of the publisher.
An Overview of Thermal Hydrolysis
– North America’s Hot New Biosolids Technology............................. 87
Water For People ................................................................................ 92
NC Safewater Endowment Update .................................................... 95
DEPARTMENTS
Message from the Chair.................................................................................... 7
Executive Director’s Report................................................................................ 9
Board of Trustees Meeting Summaries..............................................................13
Committee Chairs.............................................................................................14
Committee Spotlights.......................................................................................17
Member Portrait: Steve Hilderhoff................................................................... 22
Member Portrait: Aaron Brower....................................................................... 24
Spotlight on our Supporters............................................................................. 27
Plant Spotlight: Hominy Creek Water Reclamation Facility................................ 34
Certification Corner......................................................................................... 98
Operator’s Tailgate......................................................................................... 100
Welcome New Members............................................................................... 102
News and Notes............................................................................................ 105
Schedule of Events..........................................................................................110
Advertiser Information Center.........................................................................112
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Message from the Chair
Docking 101
Chris Belk, PE, Associate, Hazen and Sawyer, P.C.
T
his is my final Chair’s Message and
a time to reflect on what we have
accomplished, and extend kudos
to our volunteers and members who have
persevered through this second year of
our transition to a new educational model.
Reviewing the strategic plan, I see that
we have made tremendous progress this
year towards achieving our goals, including
accomplishing the following;
• Three successful institutes (Charlotte,
Raleigh, Cape Fear Public Utilities Authority)
• Inaugural Academy at the Collections and
Distributions Schools
• Water For People Fun Runs in Charlotte
and Raleigh
• GROW events in Charlotte, Raleigh,
Asheville, and Wilmington
• Reformed and combined the Water
Resources and Reuse committees
• Reformed the Biosolids committee
• Initiated our Leadership Mentoring program
• Held the first Grade 4 Maintenance Exam
• Held inaugural Model Water Tower
Competition in Charlotte, and 8th Annual
Model Water Tower Competition in Raleigh
• Transitioned the Spring Conference to
Asheville, NC for 2016 (In the forseeable
future we will alternate between the
mountains and the coast to better serve
our members from Manteo to Murphy).
This is not an invitation to sit back on our laurels
because there is still a tremendous amount
of work to do. To continue with our sailing
analogy, we had a great final leg for this heat,
but we still have to dock the boat and get
ready for tomorrow’s race. If you have done
any boating, you will know that docking can
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to return to Table of Contents
provide a lot of entertainment and produce
some colorful language. Docking requires
a significant amount of forethought and
communication with the crew and is the
absolute wrong time to relax. You have to
contend with other boats, currents, wind, and
you don’t want to damage the boat (or lose
a crew member overboard) by ramming into
the dock. There are nails, barnacles, cleats,
lifelines, booms, stays, anchors, and all sorts
of other obstacles that always seem to find a
way to catch a foot or toe.
You may be surprised to hear that,
despite our careful planning and top-notch
crew, we nearly lost our 2016 Annual
Conference overboard this year. On our
approach it was noted that the slip to which
the dockmaster was directing us was under
construction and didn’t have an electrical
hookup. The Winston-Salem convention
center is going to be in the middle of major
renovations, including a change to the exhibit
hall that eliminates the floor drain required
for the pipe tapping contest. The committee
and staff acted quickly and changed our
2016 slip to Raleigh, and negotiated use of
the renovated Winston-Salem facilities for
our 100th Annual Conference in 2020 (with a
provision to include the required floor drain).
Fortunately, that was it for the “docking”
drama this quarter. It does seem that we are,
however, experiencing some crew fatigue.
Despite the fact that we are doing more than
ever, and providing high quality continuing
education, our membership has declined
slightly. This is where we most need your
help. Don’t be bashful about approaching
board members, committee chairs, council
chairs, or staff and let them know how we
are or are not meeting your needs.
I am truly excited to read the articles in
this Fall Edition of NC Currents on Trenchless
Technology, a subject near and dear to my
heart and daily life at Hazen and Sawyer as a
member of our conveyance practice group.
Our conveyance projects increasingly require
tunneling under existing infrastructure, streams,
or connecting different drainage areas. Please
enjoy this issue, and if you haven’t already done
so, please visit ncsafewater.org to update your
profile in our new database so you can access
and print your professional development hours
from all of our events including the 95th Annual
Conference in Raleigh, November 15-18.
Finally, I’d like to thank all of you for
making this a great year for NC AWWAWEA. I would be greatly remiss if I did not
extend thanks to my employer (Hazen and
Sawyer) and my family (Caroline, Max, Chloe,
and Lily), without whose support I could not
have served you as Chair this year. There
are too many people to thank for their efforts
advancing NC AWWA-WEA this year, but I’d
like to extend a special thanks to a few of
whom I am aware that have truly extended
themselves this year. These include Dave
Saunders and Greg Morgan for their efforts
developing the Academy, Del Harney and
Brandon Garner for the Grade 4 Maintenance
Exam, Betsy Drake and Erika Bailey for our
Institute Program, and John McLaughlin for
the Leadership Mentoring program. A special
thanks to all our Board, Council Chairs, Task
Force Members, and Committee Chairs for
their leadership as we navigated a lot of new
territory this year.
www.ncsafewater.org
7
Executive Director’s Report
Double the Value
Lindsay Roberts, CAE, Executive Director
N
C AWWA-WEA, as most of you
know, is the North Carolina
Section of the American Water
Works Association (AWWA) and the North
Carolina Member Association of the
Water Environment Federation (WEF).
At inception, AWWA was the drinking
water arm of water education and WEF
was the wastewater treatment arm.
Over the past 100 odd years, both
national organizations have recognized
that ‘water is water’ and have expanded
their focus and reach to incorporate
educational and regulatory focus on water
in its many guises, while retaining their
original and primary focus. Most of the
State Sections and Member Associations
have done likewise.
NC AWWA-WEA, however, has always
been most unlike its sister Sections and
Member Associations, in that it has, since it’s
own inception more than 90 years ago, been
a conjoined twin. Legally, NC AWWA-WEA
is two completely separate and independent
corporate entities, but it has functioned
as one, with a single board, a single set
of policies, and a single common purpose
– to provide ALL North Carolinian water
professionals with the best educational
resources and support, regardless of
the flavor, color, source, destination, or
mechanics of the water.
This complex joint arrangement is
sometimes difficult to steer and manage,
but the enormous benefits of this
unique jointed-ness that derive for
Water Professionals in North Carolina has
Click Here
been obvious – and provide a compelling
motivation to the NC AWWA-WEA Board
in its unfailing dedication to maintain it.
AWWA’s membership marketing efforts
are targeted at utilities. AWWA utility
membership allows 100% of employees
to access NC AWWA-WEA’s services
at member prices. WEF doesn’t have
a membership category for utilities that
extends those same benefits, but WEF
does permit the Member Associations to
have individual state-only members, and
NC AWWA-WEA has taken advantage
of this, creating the SLAM membership
category. SLAM membership allows
individual Water Professionals whose
agencies or budgets are small, or that
don’t cover membership, to become
members for a cost that is about $5
per month, to take advantage of the
outstanding educational offerings of
NC AWWA-WEA at member prices, and
better yet, to have personal receipt of
NC Currents, all the quarterly
training guides, and all e-news and
e-communications. This is really good
stuff and it’s really a good deal.
However, what SLAM members don’t
have, is discounted access to the national
educational resources, educational programs
or direct communication that comes from
AWWA or WEF. I’m going to tell you about
some of that stuff, because I believe it’s
fantastic, and that it’s valuable enough for
you to think about being a member of both
AWWA and WEF – which automatically
makes you a member of NC AWWA-WEA.
I was lucky enough to be able to go
to Anaheim in June, to attend the AWWA
Annual Conference and Exposition.
Although my specialty as your Executive
Director, is non-profit association
management, not water, I was bowled over
at the Opening General Session, where
Wallace J. Nichols, author of Blue Mind,
told the story and showed film of a turtle,
released from an aquarium on the California
coast. That turtle had spent years in a
tank, and had learned, as all captives do,
exactly and precisely how many flaps of
her flippers it took to reach the end of the
tank where she had to turn or bump into
the glass. A couple of thousand of us sat
in that auditorium and watched underwater
video as the turtle was released, pausing
at the moment when she’d always had to
turn, then realizing that there was no wall
and that open ocean lay ahead of her. I’ll
confess to shedding tears watching that
moment, seeing her pace quickening as
she swam past that point of no return.
She made her way to the shore of Japan –
perhaps her home.
Nichols asked each person in that
audience to think of the first water they fell
in love with – and he gave a blue marble
to each of us in that Opening Session.
He’s given more than a million of those
marbles away since 2009. “Hold it at
arm’s length, and that’s what Earth looks
like from a million miles away – a small,
blue, fragile, watery dot,” he said, “like the
photo taken by the Apollo 17 crew, more
than 40 years ago.” The rule of the marble
www.ncsafewater.org
9
Executive Director’s Report
“My first water – the water I first fell in love
with – and knew that I loved, was Zoo Lake, a
very small lake in Johannesburg, South Africa.
I first rode my bicycle there at the age of 11 –
and often thereafter, without the knowledge
or permission of parents, and used my pocket
money to rent a wooden rowboat.”
is to pass it along – with a story about
why water matters to you, and why you
are grateful for what people do to protect
water and restore it.
My first water – the water I first fell
in love with – and knew that I loved,
was Zoo Lake, a very small lake in
Johannesburg, South Africa. I first rode
my bicycle there at the age of 11 – and
often thereafter, without the knowledge
or permission of parents, and used my
pocket money to rent a wooden rowboat.
A huge and cumbersome thing it was,
but to me, it might as well have been
Cinderella’s coach, or the wings of Icarus.
Rowing is the most liberating sensation
to me in all the world. Oars are my wings.
When I saw
the turtle swim
beyond the point
of no return, I
knew that feeling
– I know love of water, and love of those
who protect and restore it.
A trip to WEFTEC this fall in Chicago will
provide a similar opportunity. Rob Stewart,
award-winning biologist, photographer,
conservationist, filmmaker and author will
discuss his film Revolution, which should
help Water Professionals frame their own
innovative and transformative efforts in
sustainable water management.
Then there are the national association
bookstores. Yes, yes, I know everything
under the sun is online, but truly, you don’t
know what’s available to you until you are
standing in the AWWA or WEF bookstore,
holding in your hands The Atlas of Water
by Maggie Black and Jannet King, and
looking at a map of the world that shows
the status of integrated water resources
10
NC Currents Fall 2015
management; or at the map of the world
that show cubic meters of water per
person per year used for food production;
or at the map showing percentage of
population by country, with access to
improved sources of drinking water; or,
most frighteningly of all, a map showing the
percentage of renewable water resources
originating from outside the countries,
which identifies areas where increasing
competition and conflict are or will arise
over exploitation of water.
Bookstores at ACE or WEFTEC might
be the only place that you come face-toface with Damned If We Don’t, a collection
of ‘cool ideas’ essays for members of the
water profession by ‘amazing people’ in
that same profession. This collection is
edited by Christopher Peacock, who has
compiled Ideas for Accelerating Change
Around Water” to help “cut across silos real or imagined” and to make accessible,
“effective levers for change.” Or, there
is The End of Abundance – Economic
Solutions to Water Scarcity by David
Zetland, a book that is particularly timely
as California faces its worst and most
terrifying drought in more than a century.
Where else, I ask you, can you go
somewhere that exclusively offers you
access to the knowledge base of materials
for your own profession, or a sit in a room
with a couple of thousand other people
who share that same passion, commitment,
dedication, interest – that same love of
water? AWWA and WEF are the answer!
We all know that we are living in a time
of daunting personal and professional
challenges – along with accelerating
change, threat, and opportunity. Every
precious waking life-minute that we
have has multiple calls upon it and
the competition for resources of time,
attention, energy, and money magnifies.
If you are reading this article, chances are
that you are already a member of WEF
or AWWA. I am offering you a passionate
– and I hope compelling – argument to
swim against the current of disengagement
and detachment. I’m suggesting that you
join or remain a member of both, and,
furthermore, that you choose to take
full advantage of the exceptional value
that comes with those memberships. If
you’ve been a silent partner, paying your
dues, ratchet that membership up one
notch, and participate in a committee,
offer a paper and teach – or co-teach
– a class; serve as a room monitor
at a conference; take minutes for the
Committee. If you have made those kinds
of vital contributions in the past, ratchet
up another notch, and offer to chair a
committee, or serve as vice chair, so you’ll
be ready to step up next year. If you’re
already a veteran of committee, School,
Conference leadership – how about going
one more rung up the ladder, and offering
time to serve on the Board? Already done
that? Think about a contribution on the
national level – to AWWA or WEF?
You have to know that your gift – of
belonging, of participation, of service, or
leadership. Those things matter a lot.
You will never have a more important
opportunity to make a difference, or make
your life matter, than in belonging and in
giving to NC AWWA-WEA and thereby to
AWWA and WEF. Swim past the end of the
tank! Get out into the BIG BLUE! We want,
need, value, appreciate – and love you for
all that you do.
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NC AWWA-WEA Board of Trustees 2015
CHAIR, Chris Belk, PE
Hazen & Sawyer, P.C.
Phone: (919) 755-8637
[email protected]
WEF DELEGATE, Barry Gullet, PE
Charlotte Water
Phone: (704) 336-4962
[email protected]
AWWA DIRECTOR-ELECT, Brian Tripp
W.K. Dickson & Co., Inc.
Phone: (704) 334-5348
[email protected]
CHAIR ELECT, Julie Hellmann, PE
Heyward Incorporated
Phone: (704) 583-2305
[email protected]
WEF DELEGATE, Richard Tsang, PhD, PE, BCEE
CDM Smith
Phone: (919) 325-3500
[email protected]
TRUSTEE, Ron Hargrove
City of Winston-Salem
Phone: (336) 747-7312
[email protected]
VICE CHAIR, Angela Lee
Charlotte Water
Phone: (704) 336-5911
[email protected]
WEF DELEGATE-ELECT, TJ Lynch
City of Raleigh
Phone: (919) 996-2316
[email protected]
TRUSTEE, Ryan LeBlanc, PE
HDR
Phone: (704) 338-6748
[email protected]
PAST CHAIR, Mike Osborne, PE
Black & Veatch
Phone: (704) 510-8451
[email protected]
AWWA DIRECTOR, Steve Shoaf, MSPH
Retired
Phone: (828) 989-8490
[email protected]
PROF WASTEWATER OPS REP, Greg Morgan
Union County
Phone: (704) 507-0372
[email protected]
SECRETARY, George Simon, PE
CDM Smith
704-342-4546
[email protected]
TRUSTEE, Lori Brogden
Schnabel Engineering
Phone: (336) 274-9456
[email protected]
PROF WATER OPS REP, Mark Wessel
City of Raleigh – Resource Recovery Division
Phone: (919) 996-3723
[email protected]
TREASURER, Ray Cox, PE
Highfill Infrastructure Engineering
Phone: (910) 313-1516
[email protected]
TRUSTEE, Jonathan Lapsley, PE
CDM Smith
Phone: (704) 342-4546
[email protected]
EXECUTIVE DIRECTOR, Lindsay Roberts, CAE
NC AWWA-WEA
Phone: (919) 784-3050
[email protected]
12
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Summary of the NC Section AWWA and NC WEA Board of Trustees Meeting
May 25, 2015 at Greensboro Coliseum, NC.
The following actions were taken:
1. Strategic Governance:
• The Board reviewed the Strategic
Planning and Governance Process.
• The Board reviewed the goals
and initiatives for Membership
Engagement. AWWA utility
memberships have increased from
108 to 118. Individual membership
numbers have predictably declined.
to develop recommendations for
expenditure of the $15,000 allocation
for marketing at a meeting to be hosted
by NC AWWA-WEA in September.
• Report on a summit held by the
California WEA on flushable wipes.
Recommendation to have the Public
Education and Regulatory Affairs Committees look at what CWEA has done
and develop something similar for NC.
2. Action Items: Approved amendments
to the Job Advertisement Policy.
a) Approved amendments to the
Personnel Policy.
b) Approved amendments to the
Endowment Policy.
c) Approved amendments to the Member
Privacy Policy.
d) Approved creation of the Joint
Water Reuse and Water Resources
Committee, with Leila Goodwin
to serve as Chair. This action
re-establishes a stand-alone Residual
Committee (to be re-named upon
recommendation from the Committee),
currently Chaired by Jean Creech.
e) Approved Membership Surveys to be
conducted as presented.
f) Approved continuation of the Spring
Conference for 2017 and 2018, with
direction to seek a coastal location with
access for heavy equipment for 2017
and return to Asheville in 2018.
g) Ratified the e-Vote, resolution for
Steve Shoaf upon his retirement.
h) Ratified the e-Vote, authorizing sign-on
to the WEF letter on WIFIA.
i) Ratified the e-Vote, approving WEF
Award Nominations for Jonathan
Lapsley and Ken Vogt.
j) Ratified the e-Vote, approving WEF Award
Nomination for Dr. Francis de los Reyes.
k) Ratified the e-Vote, supporting
application to hold the APWA Annual
Conference in Charlotte, NC.
4. Executive Director’s Report:
• Thanks to Les Hall, the Endowment
Committee has a chart to track all
tasks and timelines associated with the
scholarship program. A list of all winners
of all 2015 Scholarships was provided
to the Board. Endowment Named Fund
donors will be recognized at the Monday
Awards Event at the Annual Conference.
• Water Otter has offered a package price
for purchase of e-learning modules.
There was discussion about availability
of AWWA and/or WEF e-learning. It was
3. Chair’s Report:
• Report on productive Joint Association
Steering Committee held at the Spring
Conference, at which NC RWA,
NCWOA and NC AWWA-WEA agreed
to authorize the marketing task force
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the consensus that the current workload
for new educational offerings makes
it impossible to undertake a renewed
focus on e-learning at this time.
5. Consent Calendar - Approved:
a) Minutes of the Board meeting of March
19, 2015 were approved.
b) Treasurer’s Report for March and
April 2015, with total assets as of
April 30, 2015 of $1,240,679.74 with
$1,205,229.35 in checking/savings,
of which $385,226.16 is endowment
funds. The balance of unrestricted net
assets (checking minus endowment) is
$820,003.19. Water For People Balance
sheet as of April 30, 2015 reflects total
current assets of $5,014.88.
c) Committee Reports received through
May 12, 2015.
6.Adjournment - next meeting Friday,
July 17, 2015 at 9:30 am at Asheville
Public Works.
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NC Currents Ad 2015 Q1 KDH.indd 1
www.ncsafewater.org
13
2/9/2015 12:58:42 PM
2015 Committee Chairs and Board Liaisons
For more committee information visit individual
committee web pages on www.ncsafewater.org.
Conferences Coordinating Council
COUNCIL CHAIR:
AC Local Arrangements
2015 Spring Conference
Exhibits
Sponsorship
Awards Committee
Chuck Shue
Adrianne Elder
Christene Mitchell
Wendy Banks
Julie Taylor
Steve Shoaf
McKim & Creed
Duke Energy
HDR
Carolina Management Team
Arcadis
City of Asheville
(704) 841-2588
(919) 546-2138
(757) 222-1540
(828) 712-5918
(336) 292-2271
(828) 259-5955
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Jackie Jarrell
Charlotte Water (704) 391-5181
[email protected]
Leslie Jones
Sherri Moore
Chuck Willis Carlos Norris
Jana Stewart
Maggie Pierce
Nick Dierkes
Derek Dussek
Brown and Caldwell
City of Concord
Willis Engineers
Crowder
Stantec
Hazen and Sawyer
Brown and Caldwell
HDR
(704) 373-7127
(704) 920-5415
(704) 338-4668
(919) 367-2000
(336) 392-4051
(919) 863-9259
(704) 445-1491
(919) 232-6603
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Betsy Drake
Betsy Drake
Ben Kearns
Brian Tripp
Erika Bailey
Town of Cary
Town of Cary
CFPUA
WK Dickson
HDR
(919) 481-5093
(919) 481-5093
(910) 398-4311
(704) 334-5348
(919) 785-1118
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Board Committees
Nominating
External Affairs Council
COUNCIL CHAIR:
Communication
Constitution & Bylaws
Endowment
Membership
Public Education
Water For People
Young Professionals
Technical Program Council
COUNCIL CHAIR:
eLearning Task Force
SC Program
AC Program
Seminars and Workshops
Design and technical services
for new and existing dams
Greensboro, NC / 336-274-9456 / schnabel-eng.com
14
Click Here
Technical Program Council
SEMINARS AND WORKSHOPS COMMITTEES:
Automation Greg Czerniejewski CDM Smith
(919) 325-3500
[email protected]
Collection & Distribution Systems Barbara Moranta
CDM Smith
(919) 325-3500
[email protected]
Industrial Katie Jones Dewberry
(919) 424-3723
[email protected]
Resource Recovery and Reuse
Co-Committee Chairs Jean Creech
Charlotte Water
(704) 336-3588
[email protected]
Marla Dalton
City of Raleigh
(919) 996-3700
[email protected]
Risk Management Barry Parsons
City of Greensboro
(336) 373-7643
[email protected]
Regulatory Affairs Jaime Robinson
CH2M Hill
(704) 543-3279
[email protected]
Sustainability Jacob Vandenbosch McKim & Creed
(910) 343-1048
[email protected]
Utility Management
Co-Committee Chairs Joe Stowe
(704) 575-0762
[email protected]
Jackie Jarrell
Charlotte Water
(704) 391-5181
[email protected]
Water Resources Leila Goodwin
Town of Cary
(919) [email protected]
Schools Council
COUNCIL CHAIR: Steve Drew
City of Greensboro
Wastewater Operators Schools Billy Allen
Charlotte Water
Collection & Distribution Schools Troy Perkins
Greenville Utilities
Commission
Wastewater Laboratory Analyst Schools Debra Collins
City of Wilson
Plant Operations & Maintenance Schools Dell Harney
City of Greensboro
Professional Wastewater Operators Michael Wiseman
City of Asheboro
Wastewater Board of
Education & Examiners John Gibson
City of Raleigh
Water Board of Education & Examiners Ivan Thomas
City of Asheville
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(336) 373-7893
[email protected]
(704) 553-2124 x222 [email protected]
(704) 400-7322
(252) 551-3301
[email protected]
(252) 399-2494
(336) 373-7900
(336) 672-0892
[email protected]
[email protected]
[email protected]
(919) 996-3684
(828) 259-5957
[email protected]
[email protected]
www.ncsafewater.org
15
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Committee Spotlights
Schools Council
With a few exceptions, the State requires
individuals to attend an approved school
before being able to sit for a certification
exam. NC AWWA-WEA has several
committees devoted to organizing these
schools. The role of the Schools Council
Chair is to enhance communication among
school chairs, the board, and the many
committees that carry out the bulk of the
NC AWWA-WEA’s work.
The Schools Council facilitates the sharing
and cross pollination of instructors between
schools, when skills and talents match up.
This past year has seen the forming of new
bridges, with committees helping committees
and schools helping schools fill gaps in
instructor needs and create new talent pools.
At the same time, the Schools
Council has provided ongoing support
and resources for NC AWWA-WEA’s
new professional development and skills
training initiatives – the Academy for Water
Professional Development (Academy)
and the Institute trainings – by vetting,
supplying and supporting instructors for
these new programs.
Collection and Distribution Schools
With the assistance of the NC AWWA-WEA
staff, the committee schedules classes
and instructors to present topics approved
by the NC Water Treatment Facility
Operators Certification Board and the NC
Water Pollution Control System Operators
Certification Commission. The schools are
meant to help students successfully take
their exams.
Encompassing 20 to 25 members,
mainly from municipalities, but also
engineering firms and private vendors, the
committee meets both in-person and via
conference calls in January/February for a
Click Here
planning meeting and two to three weeks
prior to each of the three schools.
The schedule and locations changed this
past year, with a Coastal School in Morehead
City in March, Western School in Morganton
in July, and Eastern School in Durham in
September. Plans for the coming year include
getting the word out about the changes and
bringing new members onto the committee.
With close to half of members coming
to the end of their term, the committee
hopes to recruit people with a passion for
enhancing operator knowledge and passing
on their experience to future generations.
Plant Operations and Maintenance
The committee has a three-fold mission:
1) providing educational opportunities for
treatment plant personnel in existing and
emerging O&M technologies and practices;
2) encouraging cooperation among other
NC AWWA-WEA committees and with
other organizations; and 3) facilitating
exchange of information regarding
treatment plant O&M, innovative solutions
and greater understanding of plant
processes and equipment.
With 112 people on its membership
roll, the Plant Operations and Maintenance
Committee (POMC) holds an annual six
face-to-face meetings in a central part of
the state, usually Raleigh or Greensboro.
As members come from every part of the
state, teleconferencing is always an option.
A POMC subcommittee planned and
facilitated the Operations & Maintenance
track (offering 0.5 to 2 CEUs) for the Spring
Conference, that was held in Wilmington
this year. The average attendance at
the presentations was 32. POMC also
conducts formal training at schools for the
Maintenance Technologist (MT) Certification
program, with the much-anticipated
level IV rolled out in 2015, thanks to the
implementation of a new team model
encompassing school coordinators, class
coordinators, room monitors, instructors,
test proctors and NC AWWA-WEA staff.
Overall attendance at the MT schools
was down because an ice storm forced
the cancellation of the Eastern School
in Raleigh. Nonetheless, to date, 808
Maintenance Technologist Certifications
have been awarded, with requirement for
certification increasingly showing up on job
postings across the state.
Plans for the coming year include
broadening outreach to the O&M community
via a subcommittee working with the
Academy of Water Professional Development
Taskforce. The committee is also revamping
its organizational structure to streamline
meetings and facilitate small groups turning
out high volumes of quality work. With several
members taking on new leadership positions,
POMC will also be looking for new members.
Professional Wastewater Operators
Committee chair Michael Wiseman says
he became involved with the Professional
Wastewater Operators Committee (PWOC),
eight years ago, because he was interested
in seeing other plants/equipment and talking
to different people to see how they might be
handling problems similar to those he was
facing at his facility.
Monthly meetings include a training
session, which provides a two-hour CEU
toward operator license renewal. Locations
rotate to different sections of the state, with
meetings held in Chapel Hill, Hillsborough,
Charlotte, Asheville, Concord, Clarkton and
Willington in 2015.
Fostering the sharing of ideas and experiences among members, the committee
consists of 20 to 30 wastewater operators,
www.ncsafewater.org
17
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maintenance technicians, laboratory personnel,
equipment and chemical salesman, and industrial pretreatment operators per section. Annual
awards are given to each section for the best
O&M Facility. The facility hopes to keep growing
its membership and networking opportunities.
Wastewater Board
of Education and Examiners
The purpose of the Wastewater Board of
Operators and Examiners (WWBOEE) is to
provide assistance to the North Carolina
Water Pollution Control System Operator’s
Certification Commission (NCWPCSOCC).
Meeting every third Tuesday of every other
month, in-person and by conference call, the
board is tasked with reviewing the Needs to
Know (NTK) for the Collections, Biological
Wastewater and the Physical/Chemical
Schools. At the conclusion of each review,
the board presents its recommendations to
the NCWPCSOCC.
Currently, the WWBOEE consists of 13
members and three non-voting advisors: the
chair of the NCWPCSOCC (or designate) and
the chairs of the NC AWWA-WEA Collection/
Distribution, and the Wastewater Treatment
Operators School Committee. Membership
is comprised of three members holding valid
Physical/Chemical Grade II, and two holding
Biological Grade IV, and two with Collection
Grade IV certification. There are two positions
for systems with populations less than 10,000
and one for ‘other applicable certifications.’
Work continues on the NTK, with the
Collection NTK about 95% complete, the
Biological about 20%, and the Physical/
Chemical about 70%. The board hopes
to complete its review and deliver its
recommendations in the near future.
Currently there are three vacancies to fill:
one for Physical/Chemical, one in the Other
Certification category, and one representative
from a system serving a population of 10,000
or less. Any individual who would like to serve
on the WWBOEE should contact John Gibson
at [email protected] or Jeff Mahagan
at [email protected].
Wastewater Laboratory
Analyst Schools
Currently in the process of being reformed
and restructured, the Wastewater Laboratory
Analyst Schools Committee is charged with
Click Here
promoting communication between the education of the state’s wastewater laboratory
analysts. Although, the Western Lab Analyst
Group, and the two Lab-net Groups – Piedmont and Lab-Net East – are not formally
connected with the committee or each other
in any way; Chair Debra Collins would like to
see those ties strengthened in the future.
Chair Collins is looking to members who
have expressed a desire to serve on the
committee to assist in furthering these goals.
Already, members of each of the three
groups attend each other’s meetings to share
information. Although there are no separate
Lab Analyst Schools, lab classes are
offered at the NCWOA Operators’ Schools
and at events such as the Pretreatment
Consortium and the NC AWWA-WEA
annual conference. Nonetheless, many lab
analysts would like to see the state move
toward a system of more structured lab
analyst training and exam preparation.
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Over the past year, Chair Collins and a
few other NC AWWA-WEA members helped
administer the lab analyst exam, organize
the annual statewide Lab Technology Day
seminar and select the recipient of the
Wastewater Laboratory Analyst Excellence
Award. In conjunction with the NC
Department of Natural Resources,
Chair Collins also organized a meeting to
inform lab analysts of the new rule changes.
Chair Collins notes that although the
committee is focused on lab analysts working
in wastewater, another potential reform
could be expanding the mandate to those
working with water. Collins looks forward
to welcoming new members to actively
participate in reshaping the committee.
Wastewater Operators Schools
Started in 1950 as the Annual Wastewater
School Committee, the Wastewater
Treatment Operators Schools Committee
has a long history of providing education
and training for North Carolina’s wastewater
industry professionals. Over the years, it has
built on its original mandate of preparing a
curriculum for the school, and now organizes
and runs two five-day schools (one in
Raleigh and one in Morganton) for biological
wastewater treatment plant operators
Grades I to IV, and one four-day school for
physical/chemical wastewater treatment
plant operators Grades I and II.
The committee also provides input
on curriculum to the state’s Technical
Assistance and Certification Unit (TACU)
and the Water Pollution Control System
Operators Certification Commission,
established in 1969 when the State passed
a law requiring all operators to be certified.
Water Board of Education
and Examiners
The Water Board of Education and Examiners
(WBOEE) provides assistance to the North
Carolina Water Treatment Facility Operators
Certification Board (NCWTFOCB) in the
development and administration of Cross
Connection and Distribution Certification
Exams. Members assist in administration of
the exams as well as the pre- and post-exam
review. In addition, the Board is responsible
for conducting the voluntary certification
exam for Meter Technicians.
Ongoing goals include reviewing and
improving the Exam Bank of questions
for the NCWTFOCB as necessary, as well
as attending and auditing classes and
distribution schools to ensure educational
commitments are satisfactory. Every quarter,
board members review all the questions
on which the applicant pool grades less
than 50%. This continuous review process
ensures that all students are treated fairly
and are being tested with relevant material.
In the coming year, the board plans to
continue systematically reviewing exams
and procedures, while also working with
the Certification Board on a math formula
sheet that will assist with the testing of
operators in the future.
WBOEE meets quarterly, both in
person and by conference call, with
ad-hoc meetings as necessary. Members
come from the water/wastewater industry,
with specializations in distribution, crossconnection and metering. Although up
to 15 people can sit on the board, there
are currently only 10 members. Anyone
interested in joining can contact the chair,
Ivan Thomas at [email protected].
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Member Portrait
Portrait of
Steve Hilderhoff:
A Passion for Engineering
F
rom a young age, Hilderhoff knew he
wanted to be an engineer. He comes
from a large family where, out of 35
first cousins, six have chosen engineering
as a career. “I remember in ninth grade,
we had an assignment about careers and
so I decided to write about being a civil
engineer,” says Hilderhoff whose report was
partly influenced by an older cousin who
graduated with a civil engineering degree.
After high school, he began his
undergraduate years at the University of
Pittsburgh in his hometown. It was there
that he first developed an interest in water
and hydraulics.
In his junior year of college, he decided to
send out resumes to nearly every engineering
firm in the phone book. Subsequently, he
was offered a summer internship by CET
Engineering, a water/wastewater consulting
firm in Harrisburg, Pennsylvania, where his
family had relocated. “After my internship I
had an even greater interest in learning more
about the water and wastewater side of the
business,” he recalls.
Upon graduating he accepted a fulltime
job with CET. He then began planning
and designing water and wastewater
facilities, developing sanitary sewer system
studies and using trenchless technology
to rehabilitate buried utilities. During
those years, he was greatly influenced by
his coworkers, who readily shared their
knowledge, “They taught me a lot about
being an engineer and how to keep things
simple,” he recalls.
Eventually, Hilderoff’s growing interest in
water and wastewater led him to pursue a
Master’s Degree in Environmental Pollution
Control from Pennsylvania State University.
Working by day, he attended classes
at night. “There were many times that my
friends were going out, but I was going
22
home to write papers,” laughs Hilderhoff,
adding that, as it turned out, one of his
bosses at CET taught several classes at
Penn State. “I had to put extra time into
those classes for sure.”
His tenacity paid off. In 2001, the young
consulting engineer was offered a position
at Stearns and Wheler in its Raleigh,
North Carolina office, where he continued
his focus on designing and rehabilitating
wastewater collection systems. In the
late 2000’s, GHD merged with Stearns &
Wheler and then coincidentally merged
with CET shortly thereafter.
Throughout his career, Hilderhoff has
been involved in several very large projects,
including providing sewer systems to
communities where there were none before.
This encompassed developing facilities from
the early stages of planning right through
to construction. Other projects revolved
around upgrading older sewers, pumping
stations and treatment plants. He admits
that seeing a project go from concept to
reality is immensely gratifying. “What we
do turns into a tangible product,” says the
consulting engineer who has now spent
more than two-dozen-years in the business,
“and it affects a lot of people.”
Since relocating to Raleigh, Hilderhoff
has been actively involved with the NC
AWWA-WEA. He explains that it was a
natural continuation of his volunteer work
with the Pennsylvania Water Environment
Association (PWEA). “Back in the
mid-1990s I was encouraged to join by
one of my managers when I was still in
Harrisburg,” he recalls. “Since I was not
sure how to participate, my manager
had signed me up for the Membership
Committee and as the ‘new guy’ I became
responsible for assembling the biennial
membership directory.”
Within his first year of arriving in North
Carolina, Hilderhoff joined the Collection and
Distribution School Committee. For the next
eight years, he taught at two schools a year.
Then John McLaughlin in GHD’s Charlotte
office suggested he join the Communications
Committee. “I enjoy the fact that we produce
such a valuable product,” says Hilderhoff,
pointing to his work with NC Currents.
He also enjoys the camaraderie that
accompanies putting together the magazine
and all its technical content. It is something
he plans to keep doing in the coming years.
“We are constantly thinking of ways to
improve the magazine and find interesting,
relevant themes for each issue, sometimes a
year or more in advance,” he notes, adding
that this sharing of knowledge is one of the
many benefits of an association membership.
“Being part of these associations has really
helped me to meet people and understand the
engineering community wherever I’ve worked.”
Along with his ongoing volunteer work,
he is also looking forward to his new position
at Dewberry and contributing to its success
across North Carolina. After 24 years with
GHD and the companies it eventually
absorbed, Hilderhoff joined Dewberry in April
2015. He is excited about the opportunity
and ready for a new challenge.
No matter what the project Hilderhoff’s
level of commitment and passion for his
work shine through. Always striving to
make a positive difference both personally
and professionally, he enjoys collaborating
with his colleagues and teaching younger
engineers. “I really enjoy seeing things get
constructed,” explains Hilderhoff, who joined
Dewberry as an Associate in April, “but it’s
also about being able to work as a team to
deliver a project that solves the issues our
clients have and make a difference in the
lives of those they serve.”
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Member Portrait
Portrait of
O
ne of the things Aaron Brower
enjoys the most about his work,
as assistant public utilities director
at the City of Raleigh, is the opportunity
to be involved in cutting-edge projects.
Recently the city launched an energy
recovery project that will see the Neuse
River Resource Recovery Facility switching
to anaerobic digestion in order to generate
methane gas to produce electricity or to
fuel the city’s bus fleet. To maximize yields,
the plant will be incorporating a unique
thermal hydrolysis process just before
the anaerobic digestion. (See article on
p. 87). “The process basically involves
‘pressure cooking’ the sludge to improve
gas production while reducing the amount
of volatile solids,” explains Brower, adding
that, to date, DC Water has had the only
active thermal hydrolysis plant in the US.
“We’re on the leading edge. This is the
most interesting project I’ve worked on
since starting with the City.”
Yet, he points out, it is not the only City
of Raleigh project breaking new ground.
For the past three years, he has also been
involved with the implementation of a
Horizontal Asset Management Program
to proactively replace water and sewer
pipelines. “That program has allowed us
to add a fee to our fee structure in order to
fund water and sewer main replacements,”
explains Brower. “We are trying to predict
when they are going to fail instead of
waiting until they do. It costs a whole lot
Aaron Brower
On the Forefront of Municipal
Water and Wastewater
more in emergency procedures than if you
proactively replace your assets. I think that
being proactive is very important to the
entire water and wastewater industry.”
It is an approach that he has had
plenty of opportunity to put into practice
during his 12 years with the City.
Before being promoted to the position of
assistant director, Brower was the head
of Capital Improvements Management, a
division that continues to report to him in
his new role. His focus is now more on the
engineering side, including development
plan reviews. “I get to be involved with all
the construction that goes on with both
our private development partners and
our city improvement projects,” he notes,
adding that he also manages the City’s
Engineering Inspections Division and the
GIS Program.
The City currently has more than 230
active water and sewer projects either in
design or construction. Brower’s group also
manages the City’s sewer capacity studies,
and the master plans for the wastewater
treatment plant (WWTP), the water
treatment plant (WTP), water systems, and
biosolids. “It’s a challenge,” he admits.
“It makes the days go by really fast.”
By working on the master plans, the
group he manages is also responsible
for generating a list of recommended
projects that are presented to City Council
for budgeting approval. This means that
Brower is involved from the genesis of
each project, through planning, budgeting,
preliminary engineering, design, bidding
and construction, to the day the project is
put into service. “That’s one of the things I
enjoy the most about my work,” he says.
“In a lot of industries you get to see one
little piece of a project, whereas in my
role at the City, I get to see project from
conception to completion.”
In fact, Brower is exactly where
he wants to be. After completing a
BS in Construction Engineering and
Management at NC State in 2000, he
was hired by a large construction firm
specializing in WTPs and WWTPs. Quickly
realizing that the work was not a good
fit, the young graduate accepted an
interim position with the North Carolina
Department of Transportation (NC DOT)
working on the 85-70 Interchange in
Durham. Once again, it did not take long
for Brower to know that this was not where
he wanted to be. Then in July 2003, he
joined the City of Raleigh as a project
engineer. He had found his niche.
“Municipalities are a good middle
ground,” he explains. “They allow you to
be efficient and nimble while providing
some structure. At the same time, working
for the City has allowed me to serve the
public, which I enjoy.” The City owns and
operates water and wastewater utilities
that serve a little more than half a million
people, living in Raleigh as well as six
surrounding towns.
“Municipalities are a good middle ground. They allow you to be efficient and
nimble while providing some structure. At the same time, working for the
City has allowed me to serve the public, which I enjoy.”
24
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In Raleigh itself, there is a lot of infill
development, which comes with its
own set of challenges. “One of the things
I have always liked about this industry
is the problem-solving,” says Brower.
“This environment has allowed me to
exercise that.” One of the innovative
solutions in which the young engineer has
been involved is the creation of a new
urban pipe replacement reimbursement
policy for developers.
He explains that when a developer
wants to build an infill apartment building
on a site originally occupied by a much
smaller structure, upgrading sewer
capacity is sometimes a necessity.
“The new policy allows us to partner with
our development community to replace
pipes that are at or near capacity,” he
elaborates. “It enables us to collect a fair
share from ratepayers and reimburse
developers to ensure they are also paying
a fair share.”
The program has made it easier
for the City to convince developers to
upgrade capacity not only to meet their
own needs but those of surrounding
infrastructure as well. In fact, the
initiative has worked so well that John
Sorrell and Robert Massengill will be
presenting a paper on this policy at the
NC AWWA-WEA Annual Conference this
fall (see Conference Schedule on p. 46)
In the past, Brower has also
presented papers at the conference.
He has been a regular at the annual
event since becoming a member of the
NC AWWA-WEA when he joined the
City of Raleigh. He has attended several
Spring Conferences as well. “That’s a
great clearinghouse to share ideas and
learn about what others are doing that
may be a bit different,” he says, adding
that the networking opportunities at
the conferences are equally important.
“Developing those relationship allows you
to share more information outside the
conferences themselves. It is easier to
call someone with a question when you
have met them face-to-face than when
you have just looked them up on the
Internet and are cold calling them.”
These exchanges have been invaluable
to Brower in growing his career. Some day
Click Here
he hopes to transition to the role of director,
either at the City of Raleigh or elsewhere.
In the more distant future, he can see
himself retiring from government and then
moving into more of a consulting role.
In the meantime, he hopes to become
involved with the Water Environment
Research Foundation (WERF). “I have a
real interest in researching,” he explains.
“There are so many great new products
being developed, but it requires research
to determine if those products are good for
utilities as a whole.”
Brower notes that whether he is
engaged in research or problem solving,
he is fortunate to have a wonderful
support network that includes consultants,
contractors and his colleagues at the City
of Raleigh. “I get to work with some great
people,” he says, “each and every day.”
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Spotlight
ON OUR
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Featuring the following companies:
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Thank you to all the advertisers who support the North Carolina AWWA-WEA through this magazine.
Spotlight
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services to local governments to address their stormwater collection,
sanitary sewer, and potable water distribution system problems.
We also have extensive experience in water and sewer rehabilitation,
Sewer System Evaluation Survey (SSES), and flow metering, but our
construction experience is unique in North Carolina.
Since the firm was founded in 2003 by Kirk Gavel, PE,
our core service area has been on providing construction
administration and observation services related to
municipal infrastructure, primarily water and sewer. The firm
has provided construction inspection services on projects ranging
from 6-inch water mains to 96-inch diameter storm sewers, and
from treatment plants to pumping stations.
We have successfully completed over $250 million of
construction projects for a variety of clients including municipalities,
universities, industrial facilities and other engineering consulting
firms. All of our inspectors are well-trained, experienced, and fully
equipped. We have the capability to ramp up or down field staff in
response to contractor schedules.
G&D has also developed extensive in-house construction
materials testing capabilities in response to the needs of our
construction observation services clients. As a result, since 2005,
we have the capability to provide the construction materials testing
services required on most public works projects.
Albemarle Water Transmission Main Project
– Cities of Concord, Kannapolis, and Albemarle
28
Please visit our web page for more information or give us a call to
see how we can be of service (704-483-2054).
G&D is providing construction administration, observation, and
engineering services during construction for this $21.0 million project,
which consists of approximately 20 miles of 30- and 24-inch ductile
iron pipe (DIP) water transmission main, two pump stations, and a
1 MG water storage tank. The project is a joint effort by the cities
of Concord, Kannapolis and Albemarle, with Concord acting as the
Owner’s Agent. It runs from Concord to Richfield and most of the
pipeline is in the right-of-way of NC Hwy 49. The pipeline traverses
both rural and suburban areas and includes restoration of driveways,
fences, landscaping and relocation of other utilities. The project is split
into two construction contracts; Contract 1 is for the pump stations
and storage tank, and Contract 2 is for the pipeline. The pipeline
includes 31 stream crossings, 16 bores under state-maintained roads
and coordination with an ongoing road-widening project.
As a result, this project requires extensive coordination with the
North Carolina Department of Transportation (NCDOT). A project
web portal was set up to initiate, track, and trace submittals,
RFIs, and correspondence. This shared workspace ensured all
project teams had the latest and best information to perform their
work. G&D had multiple inspectors on the job reporting directly to
Mr. Gavel. Construction is nearly complete and G&D is currently
providing engineering services during pump station start up.
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Dewberry is a leading, market-facing firm with a proven history
of providing professional services to a wide variety of public- and
private-sector clients. Recognized for combining unsurpassed
commitment to client service with deep subject matter expertise,
Dewberry is dedicated to solving clients’ most complex challenges
and transforming their communities. Established in 1956, the firm
is headquartered in Fairfax, Virginia, with more than 40 locations
and 2,000 professionals nationwide. Dewberry has been operating
in North Carolina for more than 30 years with offices in Raleigh
and Charlotte. In 2015, the firm was ranked in the top 50 of
Engineering News-Record’s Top 500 Design Firms.
Dewberry’s North Carolina experience includes the planning
and design of water distribution, wastewater collection, municipal
water and wastewater treatment, and industrial wastewater
treatment systems. The firm’s more than 130 local staff offer
a complete suite of services to solve client needs, including
site/civil, structural, electrical, instrumentation and controls,
stormwater, HVAC, and plumbing/fire protection engineering
services. Dewberry has been involved in hundreds of North
Carolina projects, from utility design to storm drainage studies and
technologically groundbreaking infrastructure solutions.
successful solution, with environmental protections in place and
healthy North Carolina waterways that will continue to be enjoyed
for fishing and boating.
Updating Storm Drainage in a Flood-Prone Area
As part of the Sunnyvale-Chandworth Storm Drainage Improvement
project, we surveyed a 670+-acre watershed, including topographic
mapping, cross section surveys, and inventory of existing utilities
using aerial mapping. Dewberry was able to submit all deliverables
ahead of schedule, developing a strong relationship with the client
in the process. The storm drainage system study, including analysis,
design, cost-benefit analysis, and cost estimates, provided the city
with information needed to improve the existing and inadequate
storm drainage system.
Pumping Solution for Duke Energy
Improving Infrastructure
Duke Energy was challenged by chronically low levels of water
in Belews Lake, North Carolina, where it has operated the
Belews Creek Steam Station since 1974. The company was
using expensive temporary pumping measures to transfer water
from the Dan River to Belews Lake to keep the 2.24-GW plant
in operation, but required a more feasible, permanent system
for water transfer. With so much at stake, Dewberry used solid
science, state-of-the-art technology, and a thoughtful engineering
approach that works together to create a cost-effective, long-term
solution. They engineered an approach that includes a permanent
raw water intake system (up to 65 MGD) with two velocity caps,
fish screening, and four vertical turbine pumps. The result is a
With locations all over the nation, Dewberry is able to research
regions individually and combine data to develop the best
plans locally as well as nationwide. The firm works with clients
to navigate current and emerging standards, as well as potential
impacts on their water and wastewater infrastructure. The firm
continues to make strides in improving North Carolina’s
infrastructure and transforming local communities with our
superior knowledge. Dewberry’s long standing water and
waste water expertise enables it to infuse past experience and
lessons learned into every project.
Click Here
www.dewberry.com
www.ncsafewater.org
29
Spotlight
ON OUR
Supporters
Engineering is our Profession.
Service is our Passion.
www.hiepc.com
Why Service Matters
By Allison Andrews, Communications Coordinator, HIGHFILL
[email protected]
When I look at the employees of Highfill Infrastructure
Engineering (HIGHFILL), one thing is very clear to me – their
commitment to service does not stop when the clock hits five.
Many of our staff members are not only active leaders in
industry organizations like NC AWWA-WEA, WEASC, and
PENC, but they also coach sports teams, mentor at-risk or
special needs youth, volunteer at historic sites, participate in
animal rescue events, and take part in mission trips with their
churches or other community groups.
I am not sure what calls us to these kinds of activities, but I
do know that it shapes the kind of people we are and how we
approach the work that we do every day. Whether it is in our
DNA or learned over time, the will to serve others becomes a
defining characteristic.
“It is important to the success
of our firm that our employees
are service-oriented. This foundation of
genuine care for others comes through in
their service to our clients and helps us to
build strong, lasting relationships.”
Tyler Highfill, PE, Founder and President
As an engineering consulting firm, HIGHFILL wants to be the
best in the business. Selective hiring, in terms of setting a high
bar for employee proficiency, education, and interpersonal
skills, is an important first step.
The greatest business success, however, is achieved with
employees who are committed to the core principles of the
business. Those core principles must, first of all, be worthy
of gaining their commitment. The most dedicated employees
are those who understand that they are an integral part of
something larger than themselves, who work in a culture where
they feel secure to be themselves, and who feel empowered to
be their best.
HIGHFILL employees are encouraged to seek out every
opportunity they can to be of service to others. We believe
this encouragement is a large part of the reason we have
experienced extremely low turnover. We want our employees to
be able to follow their passions integrally with their daily work.
30
Click Here
Service matters because, above all, people matter. For a company
whose business is primarily in service to the public, it is critical
that our employees have a penchant for serving. HIGHFILL’s
service focus is reflected in our business mantra, which is an
adaptation of the Engineer’s Creed:
We place service before profit, the profession before personal
gain, and the public welfare above all other considerations.
“I’ve stayed with HIGHFILL for nearly
10 years because I appreciate the focus
on service, whether for clients or the
community, and because the working
environment allows me to grow as an
engineer based on my personal effort.”
Paul Shivers, PE, Project Manager
Click Here
www.ncsafewater.org
31
Anaerobic Digestion Equipment
Steel and Stainless Steel Digester Covers, Mixers, Heat Exchangers,
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Equipment is designed to applicable AISC, AWS, ASME, ASCE
codes and fabricated by OTI employees to ensure the highest quality.
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Represented By:
Daparak, Inc. (704.323.7034)
The Academy for Water Professional Development
is a new initiative of NC AWWA-WEA to ll an
industry training gap and advance the careers of
participants. The program includes multi-year
technical and leadership development training
courses, which have been developed based on
input from industry leaders across North Carolina.
Frequently Asked Questions
What is The Academy for Water
Professional Development (The Academy)?
The Academy is a specialized training and certication
program for current or prospective water industry
employees seeking to advance their careers.
Why should I enroll?
The Academy has been built for professionals who look
at the water industry not just as a job, but as a career.
NC AWWA-WEA consulted with industry leaders to
determine the most highly desired skillsets for upper
level employees. Our courses have been designed to
incorporate that feedback and position participants for
supervisory and upper level management positions. Any
individual who is serious about advancing his or her
career and is willing to invest time into training is
encouraged to enroll.
How is The Academy structured?
The courses for each discipline in our program have
been organized into four certication levels: Apprentice,
Journeyman 1, Journeyman 2, and Master. Certication
will require completion of all courses within each level
(or equivalent) and passing a comprehensive exam.
Can I receive credit for prior training or
years in the workforce?
Credit for previous training courses and/or work
experience will be determined on a case-by-case basis.
Participants will be given an opportunity to submit these
items for review upon registration.
Is this training required by the State?
Where will the training be held?
Training sessions will be held at venues throughout
North Carolina and online.
What disciplines are currently available for
certification?
We are currently offering courses in Collection System
Technician and Distribution System Technician
programs; however, more disciplines are currently under
development.
How long will it take me to complete each
level of a discipline?
The timeframe for completing each level will vary
depending on the number of hours the participant can
devote to the training.
Will CEUs be required to maintain
certification?
Yes. To maintain the value and credibility of the
certicates, continuing education will be necessary.
How can I become an instructor or
volunteer to help with The Academy?
Volunteer opportunities with The Academy are
numerous and include behind the scenes administrative
work, course and curriculum development, marketing,
and instruction. Individuals who are interested in
volunteering or becoming an instructor should contact
Catrice Jones at [email protected].
No. Most training will result in voluntary certicates.
Registration for Academy Classes
Will I receive a degree or college credit?
The rst classes were held in 2015 at the Western and
Eastern Collection & Distribution Schools. More classes
will be scheduled in 2016. Courses will be advertised
on www.ncsafewater.org, in eNews email newsletters,
and in 2016 Training Catalogs. You may also contact
the NC AWWA-WEA to nd out when the next courses
will be offered and to ask questions.
The Academy is not currently affiliated with any college
or outside degree program. All certications will be from
NC AWWA-WEA only.
Plant Spotlight:
City of Wilson’s Hominy Creek
Water Reclamation Facility
– Making Positive Changes for the Future
Operations Center and Laboratory
General
Back in 1958, the City of Wilson started
up the new Hominy Creek Wastewater
Treatment Plant that served the majority
of the customers located within the
city limits. By 1974, this plant’s name
changed to the City of Wilson Wastewater
Management Facility and now the plant
has been named the Hominy Creek
Water Reclamation Facility (HCWRF).
This wastewater treatment plant’s boast
is not multiple name changes, but its
continual implementation of improvements
that encompass some very advanced
technologies and innovative water
treatment processes.
The HCWRF has a design flow of 14
mgd and treats both domestic and industrial
wastes for a population of nearly 50,000
people within the City of Wilson. Currently,
the facility operates with an average daily
flow of 9.8 mgd and an average maximum
daily flow of 14.7 mgd. The peak flow
is 30.0 mgd and the projected annual
operating cost is $4.5 million.
Aerial photo of Hominy Creek WRF
34
As well, the City of Wilson utilizes
reclaimed water from HCWRF to irrigate a
turf farm located at this facility. The City of
Wilson’s Parks and Recreation Department
manages and maintains the turf farm’s
varying turf species and harvests the
mature turf for city projects. One such
project was the Parks and Recreation
Department’s recently constructed soccer
fields located at the city’s soccer complex.
The turf for the two new fields was
harvested and transplanted from this
City-managed turf farm.
Treatment Processes
The basic treatment processes at the
Hominy Creek Water Reclamation
Facility (HCWRF) includes the liquid train
consisting of primary, secondary, and
tertiary treatment processes, followed by
effluent pumping to the reclaimed water
distribution system. Solids removed from
the liquid train are directed to four on-site
anaerobic digesters for further treatment,
and then the solids are removed from the
facility site to either a compost facility or
farmland via land application.
1. Preliminary & Primary Treatment:
Within the preliminary treatment portion
of the HCWRF, about 70% of raw
wastewater enters the preliminary
treatment influent structure via an
influent pump station with four dry pit
submersible pumps that are equipped
with variable frequency drives and a
mechanical bar screen that includes
a serpentine conveyor to collect
screenings. The remaining 30% of
influent wastewater combines with the
flow from the influent pump station and
then flows through two mechanical bar
screens with a combination screenings
conveyor and press, and then travels
through two stirred vortex grit collectors
and two corresponding grit classifiers.
After this, the influent wastewater flows
through three primary clarifiers for further
treatment, while the equalized dewatered
side-stream combines with the influent
prior to entering the primary clarifiers.
Prior to entering into the primary
treatment portion of the HCWRF,
effluent flow from the preliminary
treatment area is measured using an
ultrasonic flow meter. It should be
noted that there are two primary sludge
pump stations located in the preliminary
treatment area that transport sludge
from the primary clarifiers to the four
anaerobic digesters; primary sludge is
not thickened (note: only wastewater
activated sludge (WAS) or WAS from
secondary clarifiers is thickened).
2. Secondary Treatment: Primary
treatment effluent (PTE) travels through
a five-stage secondary treatment
Click Here
Covered sludge facility
process after combining with effluent
flow from a biological phosphorous
removal (BPR) tank that operates
anaerobically and receives a portion
of flow from recycled activated sludge
(RAS). The combined primary and
BPR effluent flows then feed into the
seven biological nutrient removal (BNR)
tanks. These seven BNR tanks operate
in parallel with one another, and each
have an anoxic zone, an aerobic zone
(including fine bubble, ceramic disc-type
air diffusers), a second anoxic zone,
and a post aeration zone. In addition,
nitrogen recycle (NRCY) pumps
transport water from the end of the
aeration zone to the first anoxic zone.
After this, a MicroC 3000™ solution
is fed into the second anoxic zone as
a food source for the denitrification
process. MicroC 3000™ is primarily a
methanol product that also contains a
blend of other alcohols such as ethanol,
propanol, and butanol. Three Hoffman
centrifugal blowers are included in the
secondary treatment process, and two
APG Neuros turbo blowers are currently
being installed to further enhance the
treatment process. Finally, the effluent
wastewater flow coming from the BNR
tanks then travels into one of the five
secondary clarifiers, where secondary
sludge is then transported through three
RAS pump stations to holding tanks at
the solids handling facility prior to being
thickened.
3. Tertiary Treatment: From this point in
the process, clarifier effluent flows over
V-notch weirs on effluent troughs within
the clarifiers and move forward to the
tertiary treatment area. The first process
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One of two belt presses in the sludge dewatering building
of tertiary treatment is filtration and five
deep-bed effluent filters are utilized
at the facility; there is also an option
to feed food source for denitrification.
At this particular point in the process,
filtered effluent flows from the deep-bedfilters to disinfection, which is achieved
by chlorination of the plant effluent using
liquid sodium hypochlorite coming from
two bulk storage tanks.
From this point, the plant effluent
is directed towards a splitter box that
sends the effluent into two different
areas. Part of the plant effluent travels
through the post aeration/dechlorination
process and the other part is directed to
the reclaimed water distribution system.
A general description of both processes
is as follows:
A. Post Aeration/Dechlorination:
Treated wastewater to be
discharged into a body of water
must meet permit limits for dissolved
oxygen levels (DO), and this post
aeration facility ensures that the
DO concentration is met. Coarse
bubble static tube diffusers with
centrifugal blowers are located in the
post aeration area. These diffusers
impart air from the atmosphere
into the water prior to the plant
effluent being dechlorinated. The
dechlorination process is achieved
by feeding liquid sodium bisulfite
from the bulk storage tank into the
chlorinated plant effluent coming
from the post aeration area. Finally,
the plant effluent coming from
the dechlorination process is sent
through a Parshall Flume with an
ultrasonic flow meter, and then
travels through an approximate
1.5-mile discharge piping system
to the river.
B. Reclaimed Water: The other
portion of the plant effluent flows
downstream from the above
referenced splitter box directly to
the reclaim water pump station that
consists of two pumps. Just after
the plant effluent flows through
these two reclaim water pumps,
the water is treated again with
liquid sodium hypochlorite prior to
being sent to the reclaimed water
distribution system that contains
both 0.25 MG and 1.00 MG
elevated storage tanks.
4. Solids Processing/Handling: Solids
are completely processed onsite at
the Hominy Creek Water Reclamation
Facility (WWWRF) through anaerobic
digestion. Prior to being sent to the
four existing anaerobic digesters,
solids collected from the bottom of
the secondary clarifiers are pumped
to a waste activated sludge (WAS)
thickening area, which includes
two Ashbrook 3.0-meter gravity
belt thickeners and a liquid polymer
feed system. Thickened solids are
then transported to the four existing
anaerobic digester (with floating covers)
referenced above, where four sludge
tube-in-tube heat exchangers are fed
from two dual fuel fire tube boilers.
Digester gas is used primarily to fuel
these boilers, with natural gas as a
backup fuel.
Dewatering and disposal of solids
starts with the anaerobic digested
solids being sent to the two existing
www.ncsafewater.org
35
Aeration basins
Ashbrook 2.0-meter belt filter presses,
which are directly tied into a liquid
polymer feed facility that enhances
the overall dewatering of the solids.
Once the solids are properly dewatered
(note: the final cake is approximately
20% solids), they are then transported
to a 32,000 square foot covered storage
pad for further drying. The final transport
and disposal of solids (mainly Class B)
is completed through an existing
contract with Granville Farms, where
the majority of the Class B solids
are transported to a company called
Eastern Compost and the remaining
portion is land applied to local farmland.
Other Information
1.Awards: 2014 NC AWWA-WEA
Wastewater Treatment Plant Operation
and Maintenance Excellence Award –
East Region
2.Personnel: Although the HCWRF is
highly automated, the plant requires
the attention of a highly trained
operations staff. One plant manager, an
administrative assistant, and the water
reclamation compliance coordinator
are employed at the HCWRF for
general administration, regulatory
compliance, and pretreatment program
management. In addition, the facility has
a total of 22 operation and maintenance
employees, and six laboratory
employees. As far as personnel
development programs with the City of
Wilson, specialized training is available
to the employees in order to attain
various certifications in their respective
areas. If employees receive all available
certifications in their respective areas,
36
The headworks, which includes two mechanical bar screens
and a vortex grit system
management encourages them to
branch into other areas of the HCWRF
as much as possible. In addition, there
are HCWRF staff certified at various
levels in all of the following areas:
Biological Wastewater Operation, Land
Application, Spray Irrigation, Physical/
Chemical, Collection System, WWTP
Maintenance Technology, Pretreatment,
and WW Lab Analyst.
3. Plant Expansions: The HCWRF influent
pump station was recently updated
in 2012 with new pumps, variable
frequency drives (VFDs), controls, and
a mechanical bar screen. In addition, a
second power line feed was also added
to the influent pump station so HCWRF
plant staff could continue to operate
at least half of the pumps if one of the
power feeds was lost.
The HCWRF is currently in the
process of installing two APG-Neuros
Turbo blowers to enhance the
secondary treatment system. The
primary goal of the blower installation is
to provide redundant power systems to
the main air supply system in the event
of loss of critical components. Current
blowers operate on a 2300 volt supply,
and any loss of transformer or other
critical gear could result in catastrophic
loss of critical treatment operations
for an extended time while equipment
is repaired, located, installed, etc.
In addition, these new blowers will have
their own separate power feed running
at 480 volts and could be run on a
single easily located generator. Other
benefits of these blowers are better
energy efficiency and better control of
air to the plant aeration zones.
4.Automation: Supervisory Control
and Data Acquisition (SCADA) at
the HCWRF monitors the majority of
processes throughout the plant and
20 off site pump stations. The existing
air control system is monitored by
seven Luminescent Dissolved Oxygen
(LDO) probes, 14 Oxidation Reduction
Potential (ORP) probes, nitrate and
ammonia probes, and two Solitax
turbidity probes; all probes use either
Hach® SC100 or SC200 controllers.
In addition, the air control system is
automated with several actuator valves
controlling airflow, and many other
processes can be controlled through
the HCWRF SCADA system.
5. Safety and Health Program: HCWRF
staff have a plant-wide safety meeting
once a month to provide required
OSHA safety training, and they also
discuss special topics of concern
related to wastewater treatment plant
operations. They also discuss any
recent safety incidents and provide
additional training to try to prevent
repeat incidents from occurring.
6. Unique or Difficult Problem Faced/
Solved: The HCWRF discharges into
Contentnea Creek, which is a tributary
to the Neuse River. The Neuse River
has additional regulations due to its
designation as nutrient sensitive water.
The current permit for the HCWRF
includes annual loading limits for Total
Nitrogen (TN) and the City of Wilson is
a member of the Lower Neuse Basin
Association (LNBA) and the Neuse
River Compliance Association (NRCA).
HCWRF staff strive to get their TN
discharge as low as possible, but it is a
Click Here
task they have struggled with for many
years and they continue to look for
ways to decrease the TN discharge.
Around 1992, the existing trickling
filter was converted to a BPR tank.
And just prior to 2000, the existing three
aeration basins were modified to provide
denitrification, and three additional BNR
tanks were added for a total of six BNR
basins. Tertiary filters were also added
during this upgrade. In 2005, a seventh
aeration tank was added and an upgrade
of the dewatering facilities was completed.
The addition of the dewatering facility
created a new challenge in regards to
dealing with the filtrate side-stream from
the new belt filter presses. Since the
HCWRF sludge is anaerobically digested,
the BFP filtrate is highly concentrated with
ammonia. The current HCWRF processes
efficiently remove the ammonia, but that is
converted to nitrate, which processes must
also remove to keep the TN loading down.
Over many years, the HCWRF staff has
taken several different actions to minimize
the impact from their side-stream and
improve nitrogen removal. HCWRF staff
struggled with achieving sufficient WAS
removal from the process because the
side-stream from dewatering operations
increased their TN discharge values higher
than they wanted. The HCWRF originally
had a single line feeding methanol from
the bulk chemical storage to the BNR
basins, where HCWRF staff then tried to
split it evenly to seven individual basins.
Various City of Wilson personnel laid
additional methanol distribution lines in the
system; therefore, they now have lines for
BNR basin pairs. This particular addition
of distribution lines has helped better
distribute methanol to the individual basins
and helped improve the HCWRF’s TN
discharge values.
HCWRF staff also switched from
operating belt filter presses during low flow
conditions overnight to higher flow/food
conditions during the day, and as a result,
there was some more improvement.
At that point, HCWRF staff later
determined they had excessive oxygen
in the tertiary filters for methanol feed to
work effectively, so the feed to the filters
was shut off and the feed to the second
anoxic zones was increased in the basins,
resulting in even more improvement.
Click Here
Staff at the Hominy Creek WRF
A long-term goal is to minimize oxygen
introduction into the filters. After concluding
that insufficient food was reaching the
initial anoxic zone, HCWRF staff started
shutting off one or two of their three
primary clarifiers to increase food into the
basins and noticed less nitrogen being
released. When the new influent pumps
were upgraded with VFDs, HCWRF staff
noticed a small decrease as the flow was
steadily routed through the plant.
In addition, the pure methanol was
switched to MicroC 3000™ (mostly
methanol with a mixture of other alcohols)
and there was another small decrease
in nitrogen, however, there was a major
improvement in phosphorus removal. In
conclusion, the HCWRF has achieved a
steady decrease in TN discharge since
2007 with an annual average TN discharge
of 5.46 mg/l, and their lowest value of 1.95
mg/l in 2013. However, a little ground was
lost in 2014 with an annual average TN
discharge of 2.32 mg/l.
In ongoing efforts to improve nitrogen
removal, two existing pre-aeration
basins that had been out of service for
several years were recently modified.
The City of Wilson’s Water Resources
Infrastructure Division staff modified these
basins to equalization (EQ) tanks for the
filtrate side-stream so this side-stream
could accumulate in the EQ tank during
dewatering operations and slowly feed into
the system, thus, not slugging the process
with the highly ammonia concentrated
filtrate water. In addition, the new turbo
blowers that are being installed should
give HCWRF staff additional air control
to optimize dissolved oxygen (DO) in
the basins. The next project is to add
additional LDO probes and automatic
actuator valves to better control the front
and back aeration zones in the BNR
basins. This upgrade should assist with
maintaining higher levels of DO in the front
zone to complete BOD and ammonia
removal, and then maintain less air in the
back zone and the nitrogen recycle water
entering the front anoxic zone. In addition
to all of the above actions, HCWRF staff
strives each day to optimize DO levels to
enhance their nitrogen removal.
Contact Information for more on the
Hominy Creek Water Reclamation Facility:
Jimmy Pridgen, Plant Manager,
City of Wilson – Utilities Department
Address: 3100 Stantonsburg Road,
Wilson, NC 27893
Email: [email protected]
Office Phone: (252) 399-2491
www.ncsafewater.org
37
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the Industry Leader
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Let Ferguson Waterworks help you design the right meter
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(803) 457-5718
Find the closest waterworks location near you
at Ferguson.com/waterworks.
©2015 Ferguson Enterprises, Inc.
FERGUSON.COM/WATERWORKS
0815 27140
NC AWWA-WEA
95th Annual
Conference
November 15-18, 2015
Raleigh Convention Center | Raleigh, NC
Conference Preview
41-44
Sponsorship
45
Conference Schedule
46
Technical Program
48-49
Exhibitor List
51-55
gae
Leadership
Matters
Well before EPA issued recent health
advisory guidance on impacts of algal
toxins, we were already developing tools to
help you assess the risks and chart
appropriate monitoring and treatment
approaches.
If you’re trusted to protect public health
and the environment, we can help.
1
Regular visual checks are
performed to monitor signs of
algae growth or buildup.
2
Alert & Action Plan
Monitor for algae favoring conditions
(nutrients, water temperature, stratification).
Each summer, municipalities are faced with algae-related
issues in their raw water supplies. This wall poster can be
used as a guide to develop preventative algae monitoring
and treatment for your facility, as well as minimize the
impact of an algae event.
6
3
In-reservoir algae treatment
Chemical and physical
techniques can control algae,
but may result in release of
T&O or cyanotoxin compounds.
Collect samples for cyanobacteria
identification and enumeration at
observed algae-impacted locations.
Advanced treatment options
Ozone, granular activated
carbon (GAC) filtration, and UV
advanced oxidation provide
effective barriers to algal
toxins. These high energy and
cost technologies represent
significant investments for
addressing intermittent
water quality issues.
Conventional treatment options
Powdered activated carbon (PAC),
potassium permanganate, and
chlorine have been shown effective
under certain conditions to oxidize
and remove algal toxins.
Cyanobacteria can
bloom very quickly.
7
9
5
4
Monitor raw
water for evidence of
algae or algae-related
water quality impacts.
ALERT LEVEL
LOW
Conditions • Non-favorable algae
growth conditions
Monitoring
Actions
8
• Regular visual
inspection for algae
• Monitoring of
conditions
• Weekly algae Intake
sample during growth
season
Response • Evidence of algae in
reservoir or raw water
Actions
= move to Medium
Alert Level
Step-up • Favorable algae
growth conditions
Triggers • Evidence
of cyano-
bacteria in sampling
Cyanobacteria
under the microscope.
MEDIUM
Water Regulations
The EPA has released draft “10-day Health
Advisory Levels” for total microcystin and
cylindrospermopsin as low as 0.3ppb and
0.7ppb for children younger than school age.
Use sensory analysis and
analytical tools for taste and
odor and algal toxins detection.
HIGH
VERY HIGH
• Favorable growth conditions
• Potential presence of cyanobacteria
• Potential for algae-related treatment
challenges such as pH, DO swings, low
level taste and odor (T&O) or toxins in raw
• Confirmed cyanobacteria growth
• Likely algae-related treatment challenges
• Potential for algae-related toxins and T&O
• Confirmed cyanobacteria blooms
• Confirmed presence of T&O or toxins in
raw water
• Bi-weekly to weekly visual inspections with
cyanobacteria identification at observed
impacted locations
• Weekly review of raw water quality
• Weekly odor sensory analysis of raw water
• Daily algae intake sample
• Vigilant visual inspections and sampling at
confirmed bloom location(s)
• Daily review of raw water quality
• Daily odor sensory analysis of raw and treated
water
• Weekly testing for T&O compounds and/or
cyanotoxins in raw and treated water
• Continue daily visual inspection until algae
eliminated
• Daily review of raw water quality
• 2 daily odor sensory analyses of raw and
treated water
• Daily testing for T&O compounds and/or
cyanotoxins in raw and treated water
• Evidence of cyanobacteria observed =
move to High Alert Level
• Prepare for control of observed algae/
cyanobacteria via targeted control
methods
• Prepare for in-plant treatment of T&O or
cyanotoxins
• Evidence of odor or T&O/cyanotoxins in raw or
treated water = move to Very High Alert level
• Treat confirmed bloom location and consider
whole-reservoir treatment
• Prepare for in-plant treatment for T&O or
cyanotoxins on standby or precautionary
implementation
• Alert public as appropriate and advise about
treatment strategies in place
• If not already done, treat bloom or whole
reservoir
• Implement in-plant treatment of T&O or
cyanotoxins
• Confirmed cyanobacteria growth
(2000 - 5000 cells/mL)
• Evidence of algae raw water quality impacts
• Detection of algae-related odors in raw
water
• Cyanobacteria bloom conditions
(>10,000 - >50,000 cells/mL)
• Detection of algae related T&O and/or
toxins in raw and/or treated water
• Chemical algae control in-reservoir often
results in T&O or cyanotoxin release into
water column, so analysis of compounds
should continue even after bloom controlled
10
Proactively
prepare a public
notification
plan in case it is
ever needed.
SOURCES:
International Guidance
Manual for the Management
of Toxic Cyanobacteria,
Global Water Research
Coalition Water Quality
Research Australia, 2009;
"EPA Health Advisories for
Cyanotoxins” Presented at
the May 11, 2015
Cyanotoxins in Drinking
Water Stakeholder Meeting
download
hazenandsawyer.com
this at
hazenandsawyer.com
NC AWWA-WEA
95th Annual Conference
NC AWWA-WEA
November 15-18, 2015 | Raleigh Convention Center | Raleigh, NC
2015 Annual Conference Preview
Visit http://www.ncsafewater.org/?page=AnnualConf to get more information and the latest updates.
You may choose to register online or download and print the registration form.
Mark your calendars and plan to join
us for NC AWWA-WEA’s 95th Annual
Conference, November 15-18, 2015 in
the Capital City of Raleigh, NC!
The 95th Annual Conference is expected
to draw over 1,200 water and wastewater
professionals along with over 150 exhibitors
from across North Carolina to the Raleigh
Convention Center. Attendees can look
forward to three days full of educational and
recreational activities as well as time to enjoy
the sights and sounds of downtown Raleigh.
Many exciting activities are planned.
In addition to the events outlined below,
informative technical sessions will be running
throughout the conference with papers
presented in five concurrent tracks divided
by topic: water, wastewater, collection
& distribution, special topics, policy &
management, and new this year, a young
professional’s track on Monday afternoon.
The exhibit hall will open Sunday afternoon
and remain open during conference hours
until 1:20pm on Tuesday. All attendees
are encouraged to visit as many booths
as possible and take advantage of this
opportunity to learn about new water and
wastewater trends and technologies. To help
attendees balance their time between
technical sessions and the exhibit hall, the
exhibit hall will host several events including
lunches, socials, and the popular Pipe
Tapping, Operations Challenge, and Best
Tasting Water competitions.
The conference continues in the tradition
of recognizing industry professionals and
organizations for their achievements. New this
year, to draw more attention to our deserving
award winners, many awards traditionally
presented at the Sunday evening Welcome
Reception and the Monday morning Opening
Session have been moved to a special
ceremony on Monday afternoon. Please
plan to join us to congratulate your fellow
professionals. Induction of the new class of
Select Society of Sanitary Sludge Shovelers
(5S) will take place at the Sunday Welcome
Reception, and other awards will be given at
the Tuesday Gavel Gala and Banquet.
Click Here
VISITING NATIONAL OFFICERS
John Donahue
American Water Works Association,
Immediate Past-President (2015-2016)
John is the general manager of the
North Park, Illinois Public Water District,
a groundwater system with 33,000
customers. He continues to hold water
and wastewater operator licenses and
advocates for operator involvement.
Jenny Hartfelder
Water Environment Federation,
Board of Trustees
Jenny is currently a vice president with MWH
and serves as the Rocky Mountain client
service leader in Denver, Colorado. In this
role, she provides strategic planning and
leadership for the business development
activities for the water sector in the Rocky
Mountain Region, covering Colorado, New
Mexico, North Dakota, Utah, and Wyoming.
She also serves as a project manager and
design engineer on numerous water and
wastewater projects, including master
plans, preliminary and detailed designs, and
engineering services during construction.
PRE-CONFERENCE WORKSHOP
Emerging Threats
Sunday, November 15, 3:00pm - 4:30pm
This workshop will discuss climate
change and other emerging security and
preparedness threats and challenges facing
water and wastewater systems, including
the ever-growing cyber security threat,
illegal dumping into wastewater systems,
workplace violence, and other topics. The
workshop will involve brief presentations
by the panelists of about 10 minutes each,
followed by a panel and audience discussion.
OPENING SESSION
Climate and Water Management in NC:
Possibilities and Challenges
Sankar Arumugam, Ph.D.
Monday, November 16, 7:45am – 9:00am
Dr. Sankar Arumugam is an associate
professor in the Department of Civil,
Construction, and Environmental
Engineering at NCSU. He is also a university
faculty scholar (2013-2018). He is primarily
associated with the Water Resources and
Environmental Engineering (WREE) and
Computing and Systems groups within the
Department of Civil Engineering.
Dr. Arumugam’s primary research
interest is at the interface of climate
and water management, focusing on
large-scale hydroclimatology. His current
research sponsors include the National
Science Foundation, National Oceanic
and Atmospheric Administration and NC
Water Resources Research Institute.
CLOSING FORUM
An Overview of Challenges and
Trends in Preparedness for Water and
Wastewater Systems
Wednesday, November 18, 9:00am -11:00am
The Wednesday forum will build on the
Sunday pre-conference session and the
opening keynote presentation with a panel
discussion of emerging threats to water
and wastewater systems, such as cyber
security threats, dumping into wastewater
systems, pandemic, active shooters, and
other threats, along with a discussion of
potential preparedness and mitigation
measures, such as emergency response
planning and WARN. The forum will involve
brief remarks by the panelists, followed by
a panel and audience discussion.
FACILITY TOUR
Dempsey E. Benton
Water Treatment Plant
Tuesday, November 17, 12:45pm - 4:00pm
The Dempsey E. Benton Water Treatment
Plant (WTP) is Raleigh’s newest water
treatment plant, having opened in May
2010. The plant collects from the Swift
Creek Watershed, including both Lake
Benson and Lake Wheeler, and has a
maximum capacity of 20 MGD. The
WTP utilizes raw ozone, ferric sulfate as
the primary coagulant, Superpulsator
clarifiers, up-flow biologically active GAC
www.ncsafewater.org
41
NC AWWA-WEA
filters, gravity dual media filters, ultraviolet
(UV) disinfection, a 5-MG finished water
storage reservoir and pump station,
backwash storage tank, dissolved air
flotation facility (DAF) to treat backwash
waste, recycle pump station with UV
disinfection and standby generator
facilities. The plant holds a LEED Silver
Certification, received an Area Wide
Optimization Program (AWOP) Award in
2013 and 2014, an AWWA Partnership for
Safe Water Director’s Award in 2014, and
was the first water treatment plant in the
state of North Carolina to be granted 3
log Cryptosporidium and Giardia credit for
ultraviolet disinfection.
STUDENT ACTIVITIES
Several activities are planned for
Monday to get students involved in the
Annual Conference and to introduce
them to NC AWWA-WEA. To make
attendance on a student budget possible,
free Monday-only registration is available for
students. For more information
on Annual Conference student activities,
and to register, please contact
Elisa Arevalo at (919) 863-1020 or
[email protected]
Student Poster Contest – Students
involved in research related to
environmental/water resources topics are
encouraged to present their work in the
Student Poster Contest. Monetary prizes
will be awarded for first, second, and third
place posters. The first place winner will
also be awarded the opportunity to present
his or her poster at the National AWWA
ACE conference in 2016!
Student Guide Program – Interested
students can be paired with an established
professional to answer questions,
show them around the conference, and
introduce them to others in the industry.
Student Lunch – Make connections with
other students and industry professionals
during a reserved lunch on Monday,
November 16, 2015 from 12:05pm to
1:45pm. This is a great time to discuss
the conference, career paths, and
NC AWWA-WEA membership.
42
Young Professional Technical Session –
This new technical session track on Monday
afternoon is designed to provide students
and young professionals with an overview of
a broad range of topics within the water and
wastewater industry and to give students
and young professionals the opportunity to
present in a comfortable atmosphere.
PIPE TAPPING CONTEST
Monday, November 16
The Pipe Tapping Contest is a competition
of skill in which teams compete for the best
time in opening a cement-lined, ductile
iron pipe and installing a tap. Pipe tapping
teams shall consist of a maximum of four
persons including three workers and one
coach. Winners from the Pipe Tapping
Contest will be eligible to compete in the
2016 National AWWA contest at ACE.
OPERATIONS CHALLENGE
Monday, November 16 and
Tuesday, November 17
In the Operations Challenge events, fourperson teams, along with their coaches,
compete in events that challenge their skills
in various wastewater related activities.
The winner is determined by a weighted
point system. At the National WEFTEC
level, there are five events in the Operations
Challenge: Collection System Event,
Laboratory Event, Process Control Event,
Pump Maintenance Event, and the Safety
Event. The 2015 North Carolina Operations
Challenge Competition will include all five
of these events.
The Collections System Event simulates
the repair of a damaged 8-inch PVC sewer
pipe, and the connection of a 4-inch sewer
lateral, while the 8-inch pipe remains
in service. The event also simulates
the installation and programming of an
automated Hach Composite Sampler, to
collect a composite sample of the ‘flow’ in
the 8-inch pipe.
The Maintenance Event simulates the
failure of one pump in a duplex lift station,
and the full servicing of a trailer-mounted
Godwin Dri-Prime NC80 Pump. Once the
pump service is complete, the Godwin
Pump is temporarily connected to the lift
station and programmed for automatic
operation with the use of a level probe.
The Laboratory Event simulates
analyzing a series of process control
samples for pH, alkalinity, and ammonia
using Orion instruments. Once the samples
have been analyzed, the teams must
perform process control calculations to
determine if sufficient alkalinity is in the
treatment system to sustain nitrification.
The Safety Event simulates a
simultaneous confined space rescue of an
unconscious co-worker and a heart attack
on one of the co-workers attempting the
rescue. The confined space rescue must
continue while 911 is contacted and CPR is
performed on the heart attack victim. This
event uses a Reid Rapide Gantry System to
facilitate the confined space rescue.
The Process Control Event is a timed
event giving the teams an opportunity to
demonstrate their accumulated knowledge
and skill in the areas of laboratory
procedures, collections system operation,
maintenance, safety, and troubleshooting
through a written test including multiple
choice questions and short math questions.
BEST TASTING WATER CONTEST
All utilities are invited to submit a sample
and see how the taste of their drinking
water measures up to the taste of others in
the state. A panel of volunteer judges will
rank individual samples and results will be
combined to establish the overall ranking.
Awards will be given for first, second, and
third place. In order to participate, samples
must be turned in at the conference
registration desk by 5:00pm on Sunday,
November 15.
SILENT AUCTIONS
Two silent auctions will take place during
the Annual Conference: one benefitting the
NC Safewater Endowment and the other
benefitting NC Water For People. Both silent
auctions will be located close to each other
and will have similar hours. When placing a
bid, please take notice of the specific auction
and that auction’s timeline and contacts.
The NC Safewater Endowment
Fund Committee Silent Auction raises
money for the endowment fund. In
previous years, this fun and popular event
has added significant contributions to the
Endowment Fund. Additions to the fund
Click Here
WC
NC AWWA-WEA
increase the number of scholarships to be
given in the future and the dollar amount
of the scholarships.
Available auction items and their bid
sheets will be on display Sunday through
Tuesday near the committee tables or the
conference registration desk. Items will
also be displayed at the Chair’s Dessert
Reception on Monday evening. Bidding
will remain open until 1:20pm on Tuesday,
with the highest bid winning. Winners may
pay for and pick up their item at the Gavel
Gala on Tuesday from 5:30pm - 7:00pm.
Your Call to Action! The Endowment
Committee is currently asking individuals
and organizations to donate items for
the Silent Auction fundraiser. Past Silent
Auctions have successfully offered
jewelry, sterling silver, figurines, and
other collectibles. Members have also
donated top-quality artwork, woodwork,
pottery, and art glass, as well as services,
vacation spots, and dining experiences.
Cash donations are also acceptable, and
a representative from the Endowment
Committee will shop for you and will provide
44
a receipt for your tax-deductible donation.
To donate items for the Silent Auction,
contact Linnell Stanhope, Crowder
Construction Company at (919) 614-2527.
Your interest and participation in this event
are greatly appreciated. More information
will follow online at www.ncsafewater.org
and in NC AWWA-WEA eNews emails.
The Water For People Committee
Silent Auction raises funds for Water For
People projects. Visit the Water For People
table all day on Monday and until noon on
Tuesday to bid on items. Winners will be
called to pick up their items at the Water For
People table between 12:00pm - 1:20pm
on Tuesday. All proceeds from this auction
will go to Water For People.
Hanging Rights to a Piece of History Would you like to display an incredible piece
of history in your office? During the Water For
People silent auction we are offering hanging
rights to a unique 400-year-old framed print
that shows a hand pump and well system
designed by the renowned 17th century
scientist Athanasius Kircher. Kircher was a
contemporary of Descartes and Galileo and
helped Bernini with his famous fountain in
the Piazza Navona in Rome. The item itself
was printed first on a Gutenberg type press,
and then to place the graphic, a wood block
engraving was used for the illustration. It has
been dealer verified as being printed circa
1676 and was donated by John Carman.
This one-of-a-kind historical artifact is
being offered on a lending basis. The winning
bidder will own the rights to display the
piece for one year and then pass it on to the
winning bidder the following year.
GOLF TOURNAMENT
The golf tournament will be held Sunday
morning at the Lonnie Poole Golf Course
on the campus of NC State University. The
course was designed by Arnold Palmer and
utilizes Raleigh’s reuse water for irrigation.
Cost to participate in the golf tournament
is $95 per person and includes entry fee,
range balls, tee prize, breakfast, lunch, and
prizes for first place, long drive and closest to
the hole prizes. Other prizes will be given by
random drawing. Sign up as a team or as an
individual and you will be placed on a team.
Click Here
NC AWWA-WEA
Sponsorship
Several conference events offer an opportunity to show your support of NC AWWA-WEA while promoting your organization.
Each event offers unique benefits and exposure to different groups within our conference attendees and you are encouraged
to select the sponsorship combination that best fulfills your needs. All of these sponsors will be recognized with a sign at the
event, and acknowledged during the event opening and/or closing. Sponsors listed below are current as of July 15, 2015.
There may still be time to add your company’s name to this list. Contact the NC AWWA-WEA office for details.
THANK YOU TO THE SPONSORS OF THE 2015 ANNUAL CONFERENCE!
CONFERENCES
CORPORATE SPONSORS
GOLF TOURNAMENT
PIPE TAPPING CONTEST
Kennedy Valve
STUDENT LUNCH
GAVEL GALA & AWARDS BANQUET
Sponsorship is available for this event.
OPERATIONS CHALLENGE
WELCOME RECEPTION
The Operations Challenge is also
accepting equipment donations.
Refer to www.ncsafewater.org
for a list of needs.
Click Here
www.ncsafewater.org
45
NC AWWA-WEA
Conference Schedule
*These events offer contact hours. **These events are available for sponsorship.
SUNDAY, NOVEMBER 15
8:30am
Golf Tournament**
12:00pm - 6:00pm Committee Display Tables
3:00pm - 5:00pm
Board of Trustees Meeting
2:00pm - 6:00pm
Conference Registration Desk Open
3:00pm - 4:30pm
Pre-Conference Workshop: Emerging Threats*
4:00pm - 7:00pm
Exhibit Hall Open
5:00pm - 7:00pm Welcome Reception**
MONDAY, NOVEMBER 16
6:30am - 5:30pm
Conference Registration Desk Open
7:00am - 7:00pm Committee Display Tables
7:45am - 9:00am
Opening Session: Climate and Water
Management in NC - Possibilities and
Challenges*
8:00am - 5:00pm Student Poster Contest
9:00am - 7:00pm Exhibit Hall Open
9:15am - 5:10pm
Technical Sessions
9:15am - 4:00pm
Operations Challenge: Collection System, Pump
Maintenance, Laboratory, and Safety Events**
11:30am - 1:20pm Association Buffet Lunch
12:05pm - 1:45pm Student Lunch**
11:30am
Pipe Tapping Contest**
1:20pm - 5:10pm
Young Professional Session*
3:00pm - 3:30pm
Afternoon Break
W E G E T I T.
WE GET IT DONE.
4:00pm - 5:00pm
Awards Ceremony
5:15pm - 7:00pm Social Hour in Exhibit Hall
8:45pm - 11:00pm Chair’s Dessert Reception & NC Safewater
Endowment Silent Auction**
TUESDAY, NOVEMBER 17
7:30am - 1:00pm Committee Display Tables
7:30am - 5:30pm Conference Registration Desk Open
7:30am - 1:20pm Exhibit Hall Open
8:00am - 5:00pm Technical Sessions*
9:00am - 3:00pm Operations Challenge: Process Control Event**
9:40am - 10:15am Morning Break
11:30am Best Tasting Water Contest
11:30am - 1:20pm Association Buffet Lunch
12:45pm - 4:00pm Facility Tour: Dempsey Benton Water
Treatment Plant*
2:15pm - 2:45pm Afternoon Break
5:30pm - 7:00pm Gavel Gala**
7:00pm - 10:00pm Awards Banquet**
WEDNESDAY, NOVEMBER 18
8:00am - 11:30am Conference Registration Desk Open
9:00am - 11:00am Closing Forum: An Overview of Challenges
and Trends in Preparedness for Water and
Wastewater Systems*
Ebb
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Technical Program
SUNDAY - NOV 15, 2015
3:00 pm - 4:30 pm
MONDAY - NOV 16, 2015
7:45 am - 9:00 am
TIME
OPENING SESSION - Dr. Sankar Arumugam, NC State University
WATER
9:15 am - 9:45 am
Anion Exchange for Drinking
Water Treatment
William Dowbiggin, CDM Smith
9:50 am - 10:20 am
WASTEWATER
Troubleshooting Problematic
Chlorine Mixing Dynamics with
CFD Analysis
Nick Landes, Freese & Nichols
COLLECTION & DISTRIBUTION
SPECIAL TOPICS
POLICY & MANAGEMENT
Fast Track Project
Implementation for the Idlewild
BPS Piping Improvements
Kyle Massey, Black & Veatch
Waste To Energy Plant Saves
Millions
Glenn Parrish, PHG Energy
Operational Optimization - It’s
Not Just for Utility Plants
David Saunders, HDR
Algae, Algal Toxins, and
Nitrification Design Factors to
Treatment: Cures for Bad Habits! Meet Low Ammonia Limits
Scott Alpert, Hazen & Sawyer
David Kinnear, HDR
Challenges in Designing Large
Diameter HDPE Water Mains
for Charlotte’s City Lynx Gold
Line Streetcar Project: Long Life
for New Pipe in Areas of High
Electric Current
George Galambos, AECOM
Implementing an Adaptive
Capital Improvement Plan
Katy Weidner, Black & Veatch
Charlotte Water and PCBS - The
Saga Continues
Jonathan Lapsley, CDM Smith
10:25 am - 10:55 am
UV and Ozone-Mediated
Advanced Oxidation and Role
in Treatment of Emerging
Contaminants in North Carolina
Bryan Townsend, Black & Veatch
Road Map Toward Sustainable
Nutrient Management and
the Future of Mainstream
Deammonification
Beverly Stinson, AECOM
Optimizing Operations of
Finished Water Pumps and
Protecting the Distribution
System with Transient Modeling
Crystal Broadbent, Hazen &
Sawyer
Building a Townwide Water
Resources Communications
Framework
Marie Cefalo, Town of Cary
Reimbursing Developers for
Main Replacement: Raleigh’s
New Policy
John Sorrell, City of Raleigh
11:00 am - 11:30 am
ZLD Process Uses Ultrafiltration
to Achieve 99.3% RO Recovery
Phil Locke, McKim & Creed
Study, Design, Construction, &
Start-Up of NC’s First Sidestream
Treatment
Katya Bilyk, Hazen & Sawyer
Tools for Designing Inverted
Siphons
Stephanie Kellogg, McKim &
Creed
The McDowell Creek WWTP
Research Forest and Timber
Stand: Active Management and
Use of a Previously Unused
Land Parcel
William Rice, City of Charlotte
2013 EJCDC Construction
Document Series - Changes and
What They Mean for You
Matthew Skidmore, Black &
Veatch
Up and Running: The Country’s
Largest VTSH Pump Station
Takes Charge
Bryan Jann, Freese & Nichols
Are You Getting Your Money’s
Worth? Dividends of
Performance Based Polymer
Procument
Keller Schnier, CDM Smith
Exploring Regional Water System
Interconnections in the Triangle
Jeff Cruickshank, Hazen & Sawyer
11:35 am - 12:05 am
YP
12:10 pm - 12:40 pm
Considerations and Operational
Challenges in Choosing
Membrane Filtration for a WTP
Upgrade
Keith Garbrick, LaBella Associates
Relative Performance of Grit
Removal Devices
Matthew Bodwell, Hydro
12:45pm - 1:15 pm
Corpus Christi Variable
Desalination Demonstration
Project
Trooper Smith, Freese & Nichols
Effect of Organic and TSS
Loadings on Performance of
Simultaneous Nitrification and
Aerobic Carbon Oxidation in
the Signal Stage Fixed Film
Bioreactors
John He, Veolia
1:20 pm - 1:50 pm
NSF/ANSI 419: A New National
The Three Stages of a CoStandard for Membrane Filtration Digestion Program - Steps on
David Purkiss, NSF International
the Path to Success
Robert Wimmer, Black & Veatch
Solving Significant Surge and
Water Hammer Issues in a Large
Wastewater Lift Station at Fort
Bragg, North Carolina
Randy Foulke, AECOM
Success with a Basic
Vulnerability Assessment and
Emergency Response Plan
Update Project in Greensboro
Steve Drew, City of Greensboro
Employee Development Through How Rapid Growth in Fort Mill
a Skill Based Pay Approach
Necessitated Evaluation of New
Jeff Therman, Brown & Caldwell
Treatment Technologies
David Wankmuller, Hazen &
Sawyer
1:55 pm - 2:25 pm
Advanced Technologies for
Attaining and Maintaining DBP
Compliance
Allison Reinert, Hazen & Sawyer
Comparison of MBBR and
Suspended Growth Biological
Nitrogen Removal Performance
for Upgrades at the Hopewill
Regional Wastewater Treatment
Facility
Erika Bailey, HDR
Risk Based Design Storm
Selection
Steven Cook, Black & Veatch
Contractor Prequalification:
Is It Right for Your Project
Peter Schuler, Brown & Caldwell
The AWWA J100-What It Is, Why
It Is Being Updated and Why It
Matters to You
John McLaughlin, GHD
Introduction to Pumps in the
Water and Wastewater Industry
Ross Stroud, CDM Smith
2:30 pm - 3:00 pm
The Use of Chlorine Dioxide to
Reduce TOC at Davidson Water,
Inc. WTP
Joseph McGougan, MDB
Counsulting Engineers
Innovative Integrated Fixed-Film
Activated Sludge Oxidation Ditch
Conversion for Total Nitrogen
Control
Renzun Zhao, Entex
Smart Modeling for Water
Distribution System Energy
Optimization
Bryan Lisk, Hazen & Sawyer
Protecting Clemson University
Athletic Facilities - A Clemson/
US Army Corps of Engineers
Partnership
Scott Synder, AECOM
Is There Any Relief? A Case
Study in Pressure Optimization
Tory Wagoner, Cavanaugh
Career Growth Through
Construction Administration
Tony Martin, Black & Veatch
3:00 pm - 3:30 pm
BREAK IN EXHIBIT HALL
3:30 pm - 4:00 pm
An Innovative Raw Water Intake
for the Town of Boone
Ryan Hager, WK Dickson
Good at the First Drop: Start-up
of the Western Wake Regional
WRF Meets Summer Permit
Limits
Chris White, Hazen & Sawyer
Pump Station Design
Considerations for a Simple
Duplex Station Discharging into
a Combined Regional Force Main
Rachel Rausch, Kimley Horn
Integrating Asset Management
into Winston-Salem’s
Wastewater System Master
Plan CIP
Kevin Laptos, Black & Veatch
Getting and Keeping Your
Governing Board on Board
Ed Kerwin, OWASA
I Wear My Safety Glasses at
Night: Maximizing Planning Tools
to Reduce Utility Construction
Costs and Headaches
Ben Latino, McKim & Creed
4:05 pm - 4:35 pm
Dissolved Air Flotation (DAF) for
Backwash Waste Clarification at
the Dempsey E. Benton Water
Treatment Plant
Mike Hughes, City of Raleigh
Road Map to the Future:
The Consolidation of Sewer
Infrastructure in Rutherford
County, NC
Brian Tripp, WK Dickson
Where Are We Going to Put
This Thing - 30” Gravity Sewer
Through a Downtown Columbia
Neighborhood
Phillip Dieckman, AECOM
Source Water Protection and
the Detection of Chemical
Contaminants
Ben Wright, Hazen & Sawyer
The Early Years - Successfully
South Fork Improvements
Program - A Mid-Program Report Transitioning from College to the
Workforce
Kent Lackey, Black & Veatch
Eric Smith, CDM Smith
4:40 pm - 5:10 pm
Phasing of Construction of a
Major Water Plant Expansion
Jerry Pierce, Brunswick County
Why Class A Does Not Always
Make Cents: Cost Model to Drive
Biosolids Planning Decisions
Sebastian Smoot, GHD
City of Rockdale’s Elevated
Storage Tank Breaks Tradition by
Necessity
Charles Kucherka, Freese &
Nichols
Utilizing Construction Managerat-Risk (CMAR) in Greensboro,
NC
Mike Borchers, City of
Greensboro
Watershed Protection-Land Trust Start Off on the Right Foot With
Partnerships to Meet Your Goals Fine Screening
Colin Beck, Hazen & Sawyer
Mary Brice, AECOM
TUESDAY - NOV 17, 2015
TIME
WATER
WASTEWATER
COLLECTION & DISTRIBUTION
SPECIAL TOPICS
POLICY & MANAGEMENT
8:00 am - 8:30 am
Evaluating the Viability of Potable Reuse Reclaimed Water Solution for Disposal
Option
Capacity - The Village of Bald Head
Gary Revoir, Tetratech
Island
Tony Boahn, McKim & Creed
Understanding Risk and Resilience to
Better Manage Water Transmission
David Kerr, GHD
Time is Money, Use Yours Wisely
Ray Cox, Highfill
Case Studies in Leveraging the TripleBotton-Line Framework of the Envision
Rating System for Alternatives Analysis
and Decision Making
Evan Bowles, Hazen & Sawyer
8:35 am - 9:05 am
Technical and Cost Evaluation of
Alternative Treatment Trains for Direct
Potable Reuse - A Case Study
Katherine Bell, CDM Smith
Ammonia Based Aeration Control
Reduces Energy Consumption by 15%
John Rutledge, Hach
Condition Assessment Following the
Collapse of a 36” Force Main
Matthew Schulz, HDR
First Make a Business Case for Cyber
Security
Don Dickson, Phoenix Contact
Putting the Use Back in Reuse:
Reclaiming Water and Nutrients to
Support Sustainable, Local Agriculture
Systems
Bobby Tucker, TetraTech
9:10 am - 9:40 am
Intro to Iron and Manganese Control for
Small Water Systems
Reid Campbell, AECOM
Construction of Ammonia Removal
Upgrades for the First Broad River
WWTP in Shelby, NC
David Hux, City of Shelby
Navigating Uncharted Territory OWASA’s Advanced Gravity Sewer
Management Program
Anna West, CDM Smith
Now That I Have the Data, How Can I
Best Use and Maintain It? A Case Study
Greg Anderson, McKim & Creed
How to Create a Communication Plan
for Better Capital Project Delivery
Chris Brown, HDR
9:40 pm - 10:15 pm
BREAK IN EXHIBIT HALL
10:15 am- 10:45 am
Building a Robust Water Model to
Evaluate Long-Term Water Supply
Options for Union County
Kevin Mosteller, HDR
Biosolids Planning From an End Use
Perspective
Natalie Sierra, Brown & Caldwell
David and Goliath - The Story of How
a Small Town is Overcoming the Major
Challenge of Bringing Their Sewer
System into Compliance
Michael Sloop, CDM Smith
Planning for Now and the Future - The
Development of a PCS Master Plan for
the NorthEast Ohio Regional Sewer
District
Terry Draper, HDR
Benchmarking Water Loss Performance:
The Death of Unaccounted for Water
Will Jernigan, Cavanaugh
10:50 am - 11:20 am
Critical Planning and Design Elements
for Converting a Rock Quarry to a Water
Storage Reservoir
Pamela Kenel, Black & Veatch
Development of an Innovative
Methodology for Hydraulic Residence
Time Distribution Analysis - Virtual
E-Curve Method
Don Lee, AECOM
Do It Yourself Water Main Pipe Bursting
Russell Colbath, City of Monroe
One City’s Approach to Meeting
Even a Good Problem Needs a Solution:
Upcoming Incineration Regulations
When Customers Want Too Much Reuse
Through Expedited Collaboration Design Corrie Bondar, Freese & Nichols
Laurissa Cubbage, Hazen & Sawyer
Leveraging the Latest Mobile and
Cloud-Based GIS Technologies
to Support Operations and Asset
Management
Jayson Brennan, CDM Smith
Under the River and Through the Woods:
Design and Construction of Two Large
Diameter Horizontal Direction Drills for
the City of Corpus Christi
Anne Carrel, Freese & Nichols
Bridging the GAP Between Utility
Operations, Asset Management and
Technology: A Process for Aligning
Technology and Resources in Evolving
Utilities
Jeremy Brashears, WK Dickson
11:25 am - 11:55 am
12:00 pm - 12:30 pm
Diversifying Your Source Water Portfolio
for Resiliency in the Face of Emergency
- the Case of West Virginia
Victor D’Amato, TetraTech
HCSA Maple Avenue Regional WWTP
Expansion - Persevering to Get What
You Need
Scott Ehrhardt, Dewberry
12:35pm - 1:05 pm
Preparing Your Water Supply Future
Jonathan Williams, HDR
Ballasted High Rate Clarification for
Load Reduction and Capacity Increase
at Asheville, NC - A Pilot Demonstration
John Irwin, Evoqua
1:10 pm - 1:40 pm
Sustainable Water Supply
Dan Boone, Wooten
You Have Co-Digestion, Now What?
WERF Research into the Operational/
MPACB of Co-Digestion
Matthew VanHorne, Hazen & Sawyer
Lessons Learned from Recent
Challenging HDD Installations
Dave Kerr, PE, BCEE, GHD
If It’s Broke, Fix It! Acquisition of
Timmonsville’s Utilities: Part II
Porter Rivers, AECOM
A Tale of Two Plants: How Combining
WWTP and WTP Improvements in
Reidsville is Setting the Stage for the
Future
Kevin Irby, CDM Smith
1:45 pm - 2:15 pm
Effective Removal of Total Organic
Carbon (TOC) Using MIEX Ion Exchange
Treatment Solutions
J. Michael Barnes, LaBella Associates
Thermal Hydrolysis as Pre-Digestion,
Inner-Digestion or Post Digestion
Process - Where Does It Fit Best?
Richard Tsang, CDM Smith
Digital Innovation and Data Integration
Key to Successful Managing Charlotte’s
Sewer Rehab Program
Aaron Frazier, Frazier Engineering
Pushing the Limits of Constructability
Pushes the Limits of Stakeholder
Involvement
Chip Smith, Woolpert
Winston-Salem Forsyth County
City/County Utility Commission’s
(CCUC’s) Strategic Asset Management
Experience
Linda McCoy, GHD
2:15 pm - 2:45 pm
BREAK
2:45 pm - 3:15 pm
Managing Risks in Water Reuse:
Intersection of Policy and Science
Mary Sadler, Hazen & Sawyer
Thermal Hydrolysis Pretreatment (THP) Think Globally - Inspect Locally:
Considerations for a 30 Dry Ton per Day Pressure Pipe
James Perotti, Brown & Caldwell
WRF in Franklin, TN
Thomas Nangle, CDM Smith
Charting the Future of Water Reuse for
the City of Raleigh
Sheryl Smith, CDM Smith
CMOR Value Through CMAR
Collaboration
David Bennett, Freese & Nichols
3:20 pm - 3:50 pm
Raw Water Pumping Station
Improvements to AddressCary’s LongTerm Water Supply Needs
Derek Dussek, HDR
Planning for the Future - MSD’s Facility
Plan Update
Peter Weed, MSD
City of Raleigh Transmission and Raw
Water Main Condition Assessment
Effort - Planning, More Planning and
Exectution
Brent Johnson, CDM Smith
Lessons Learned from Security and
Preparedness Projects at Various Water
and Wastewater Systems
Jack Moyer, AECOM
Managing Change While Improving
Asset Management Performance
Wayne Francisco, GHD
3:55 pm - 4:25 pm
Off Stream Drought Storage Benefits to
Catawba River
Scott Thompson, Black & Veatch
Starting from Scratch - Commissioning
the First Thermal Hydrolysis Fed
Digesters in North America
Peter Loomis, CDM Smith
Condition Assessment vs Monitoring the Beware of the Golden Goose, Working
with Cell Antenna Installations on
Pro’s and Con’s
Elevated Watertanks
Cliff Jones, Syrinix
James Michel, Fayetteville PWC
Interesting Findings in the In-House
Development of a Detailed Emergency
Response Plan, Including Detailed
Hazard-Specific Response Flow Chart
Tim Woody, Raleigh
4:30 pm - 5:00 pm
Effectiveness of Tank Aeration for Stage Implementing Thermal Hydrolysis to
Expand Solids Handling Capacity at the
2 DBP Compliance
HRSD Atlantic Treatment Plant
David Briley, Hazen & Sawyer
Stephanie Spalding, HDR
Keys to Sewer Rehabilitiation Success
Eddie Sasser, Highfill Infrastructure
State of the States - Emerging Water
Loss Regulations and Validated
Benchmarks in the North America
Steve Cavanaugh, Cavanaugh
WEDNESDAY - NOV 15, 2015
9:00 am - 11:00 am
Equipment Selection and Data
Delivery Protocols for Permanent Flow
Monitoring: A Case Study
TBA from McKim & Creed
NC AWWA-WEA
NC AWWA-WEA
Exhibitors
This list is current as of July 30, 2015.
An updated list and map of the exhibit hall is available at http://shows.map-dynamics.com/95thannualconference/
3M Electrical Markets(511)
BECK - Harold Beck & Sons, Inc.(236)
A.C. Schultes of Carolina(239)
Contact: Jennifer Moore
3887 S. NC Highway 41, Wallace, NC 28466
910-285-7465
[email protected]
www.acschultesnc.com
A.C. Schultes of Carolina provides a full range of
water and wastewater construction services to
government utilities, private utilities, engineering
firms, industrial facilities, commercial farms, golf
courses and more. Our field services include the
maintenance, emergency repair, improvements,
inspections sales and new installations of water
booster, sewage lift, irrigation and other pump
stations; vertical turbine, horizontal split-case
and end suction pumps, submersible pumps,
vertical and horizontal motors and valves as well
as sewer rehabilitation and the installation of
concrete and piping for elevated storage tank
foundations. Our water well services include
design, installation, repairs and rehabilitation.
Beck Sales & Engineering(338)
ACIPCO - American Flow Control(612)
ClearWater, Inc.
(411, 409, 407, 405, 403,
504, 506, 508, 500, 502, 510)
Bio-Nomic Services, Inc.(616)
C2I Control Instruments, Inc.(238)
Carolina Civilworks Inc.635
Carolina Management Team, LLC(434)
Contact: Wendy Banks
49 McDowell Street, Asheville, NC 28801
336-431-7708 Fax: 336-431-7709
[email protected]
www.CMTcoatings.com
Infrastructure rehabilitation: concrete repair,
coatings, leak repair of tanks, containments,
basins, clarifiers, pipe galleries, manholes, pump
and lift stations for water and wastewater industry.
Carotek, Inc.
(119, 121)
Charles R. Underwood, Inc. (116)
Contact: Terry Freck
3825 Blount Court, Mathews, NC 28104
704-533-6495
American-usa.com
AMERICAN Flow Control is a division of
Contact: R.
ClayUnderwood,
Phillips
Charles
Inc.
the people
of North
andRoad,
South Carolina
since
1965
AMERICAN Cast Iron Pipe Company, founded serving 2000
Boone
Trail
Sanford,
NC
27330
in Birmingham, AL, in 1905. AMERICAN
800-729-2463
manufactures ductile iron pipe, spiral-welded
[email protected]
steel pipe, fire hydrants and valves for the
www.crupumps.com
waterworks industry and electric-resistanceWe service the municipal, agricultural,
welded steel pipe for the oil and natural gas
wastewater, and industrial water markets
industries. Find out more at American-usa.com.
specializing in all types of centrifugal pumps
including vertical turbine, horizontal split
ADS Environmental Services(505)
case, end suction, close-coupled, dry pit and
submersible sewage, and more. We offer field
Advantage Industrial Automation(539)
services, shop service and repair, well drilling,
and electrical and engineering support services
Allis Concrete Construction, LLC(513)
to complement our pump sales and service.
Contact: Shad Stringfellow
PO Box 1469, Hickory, NC 28603
828-855-3182
[email protected]
www.clearwaterinc.net
ClearWater, Inc. represents more than 65
manufacturers of water and wastewater
equipment in North Carolina, South Carolina,
and Virginia. Our full-service motor and machine
shop, and our service and maintenance teams
can provide start-up service, pump and process
equipment service and repair, and maintenance
programs and services.
Crom(537)
Contact: Joe Swann
250 SW 36th Terrace, Gainesville, FL 32607
828-713-6311
[email protected]
www.cromcorp.com
CROM designs and builds prestressed concrete
tanks for water storage and wastewater
treatment. Since 1953, CROM has constructed
over 4,100 tanks in accordance with AWWA
D-110 standards. Our experience makes us
uniquely qualified to provide tanks with the
highest quality and safety. Watertightness
guaranteed. Contact us: 352- 372-3436,
www.cromcorp.com.
Crowder Construction Company(240)
AMD Solutions, Inc. (509)
Aqua-Pipe/Sanexen Water Inc.(640)
Contact: Ron Glive
9935 Catania Avenue, Entrance 1, Room 200
Quebec, Canada J4Z 3V4
734-778-8677
[email protected]
www.aqua-pipe.com
Water main rehabilitation.
Click Here
Contact: Linnell Stanhope
1111 Burma Drive, Apex, NC 27539
919-367-2000
[email protected]
www.crowdercc.com
Crowder Construction Company is an ENR Top
400 General Contractor serving the Southeast
for over 68 years. Projects are completed
by design-build, EPC, construction manager
and traditional methods. Crowder has selfperformance capabilities on water/wastewater
facilities, heavy civil, electrical, federal, solar and
renewable energy projects.
www.ncsafewater.org
51
Over 30 years of experience in offering fine
products and services within the water and
wastewater pumping and treatment industry.
We are here to serve you with offices in
North Carolina and South Carolina.
2219 Leah Drive Hillsborough, NC 27278
Phone: 919-245-5070
Fax: 919-245-5071
www.peteduty.com
Full service, troubleshooting
and repair center for all
wastewater pumping systems
NC AWWA-WEA
NC AWWA-WEA
Exhibitors
Daparak Inc.
(605, 607, 609)
Flygt Products, a Xylem brand(128)
Dixie Electro Mechanical Services Inc. (634)
Contact: Peggy Hunnicutt
2115 Freedom Drive, Charlotte, NC 28208
704-332-1116
[email protected]
www.dixieemsi.com
Dixie Electro Mechanical Services is a leading
solutions provider of electro mechanical repair
services for industrial manufacturing, water/
wastewater plants, municipalities and facilities
management contractors throughout North
Carolina, South Carolina and Virginia.
ECS Carolinas, LLP(440)
EMA Resources, Inc.(536)
EW Process(230)
EW2 Environmental, Inc.
(304, 302, 306)
Contact: Shane Eckley
7245 Pineville-Matthews Road, Suite 100
Charlotte, NC 28226
704-542-2444
[email protected]
www.ew2.net
Since 1991, EW2 Environmental, Inc. has provided
local representation for top manufacturers of water
and wastewater treatment equipment including
headworks, process, sludge treatment, chemical
feed and disinfection equipment.
Contact: Mike Wallace
14125 South Bridge Circle, Charlotte, NC 28273
704-409-9840
[email protected]
www.flygtus.com
Flygt is a world-leader in the design and
manufacture of dry and submersible pumps,
mixers and related intelligent controls systems.
Frazier Engineering P.A.(211)
Contact: Dan Anderson
6592 Bob White Trail, Stanley, NC 28164
704-822-8444
[email protected]
www.frazier-engineering.com
Frazier Engineering is a civil engineering
firm focused on the design, evaluation,
and rehabilitation of wastewater collection
systems. Our areas of expertise include
sanitary sewer evaluation services, collection
system flow monitoring, new sewer design,
sewer rehabilitation design, and construction
management services.
Freese and Nichols, Inc.
(339, 337, 341)
Contact: Mike Wayts
1017 Main Campus Drive, Suite 1200
Raleigh, NC 27606
919-582-5850
[email protected]
www.freese.com
Freese and Nichols, Inc. is an innovative
consulting firm offering engineering, architecture,
environmental science, construction, and
planning services.
Garney Construction(235)
Ferguson Waterworks(633)
Contact: Bryan Jones
1044 Taylors Creek Drive, Greenville, NC 27835
252-367-3594
[email protected]
www.ferguson.com
Water, sewer, & storm distributor.
Click Here
Contact: Mark Kelly
370 E. Crown Point Road
Winter Garden, FL 34787
407-877-5903
[email protected]
www.garney.com
Garney Construction is a 100% employee
owned company specializing in water and
wastewater treatment facilities, pump stations,
pipelines, water storage tanks, and associated
heavy civil infrastructure. Garney has more
than 1,100 current employee-owners across
the United States generating annual revenue in
excess of $600 million.
Hach(308)
Contact: Jerry McClam
PO Box 389, Loveland, CO 80539
[email protected]
www.hach.com
Equipment and software solutions for process
control and laboratory to control water quality.
Haskell(630)
Heyward Incorporated (531, 527, 529, 525,
523, 521, 519, 517, 512, 413)
Contact: Tim Bishop or Tony Mencome
2101-A Cambridge Beltway Drive
Charlotte, NC 28273
704-583-2305
[email protected]
www.heyward.net
Serving the Carolinas for over 100 years,
Heyward Incorporated represents industry
leaders in the supply of water and wastewater
process equipment. Heyward Incorporated
provides services from initial inception through
project completion and beyond with unparalleled
engineering, aftermarket, and service support.
Hydrostructures, P.A.(534)
Interstate Utility Sales, Inc.(216)
Keller America Inc.(541)
Kemp Construction Inc.(300)
Kimley-Horn and Associates, Inc.(441)
Contact: Mike Shelton, P.E.
200 South Tryon, Suite 200
Charlotte, NC 28202
704-333-5131
[email protected]
www.kimley-horn.com
As one of the country’s premier design
consulting firms, Kimley-Horn has many
disciplines but one expertise: making our clients
successful. With offices nationwide and four in
NC, our engineers, planners, and environmental
scientists provide services in aviation,
environmental sciences, land development,
landscape architecture, transit, transportation,
urban planning, and water resources.
Kruger Inc.(103)
www.ncsafewater.org
53
NC AWWA-WEA
Exhibitors
M.B. Kahn Construction Co. Inc.(540)
Contact: Tim Cullum
101 Flinlake Road, Columbia, SC 29223
803-240-0489
[email protected]
www.mbkahn.com
M. B. Kahn is a full service construction
company offering general contracting,
construction management, design/build, fast
track delivery and select bid projects. M.B. Kahn
operates throughout the Southeast from seven
strategically located offices and serves all market
sectors, especially waterworks. With more than
85 years in the construction business, we’ve
earned the right to be called specialists in the
Waterworks field.
Permox CTF(438)
Contact: Randall Cooper
PO Box 773537, Ocala, FL 34477
205-522-0146
[email protected]
www.permox-ctf.com
Permox CTF™ is an environmentally preferable
ceramic novolac epoxy lining for ductile iron
pipe/fittings. The benefits of this sanitary sewer
lining are numerous: Coal tar free, carcinogen
free, no odors, no HAPS, green or red color,
longer ground storage compared to other
lining, can be hydro-jetted without voiding
manufacturing warranty.
Pete Duty and Associates, Inc.
(435, 437)
MBD Consulting Engineers, P.A.(114)
North Carolina Rural
Water Association(141)
Contact: David Duty
2219 Leah Drive, Hillsborough, NC 27278
919-245-5070
[email protected]
www.peteduty.com
Manufacturer’s rep for Sulzer/ABS Pumps.
Pittsburg Tank
& Tower Maintenance Co.(131)
Contact: Patrick Heltsley
PO Box 1849, Henderson, KT 42419
270-826-9000 Fax: 270-831-7025
[email protected]
watertank.com
Tank inspection and maintenance.
Rivers & Associates, Inc.(310)
Salmons Dredging Diving
& Marine Construction(335)
Contact: Jack Harrelson
PO Box 42, Charleston, SC 29402
843-722-2921 Cell: 843-296-8116
[email protected]
www.salmonsdredgin.com
Salmons extensively trained, commercially
certified dive teams are available 24 hours a
day, 7 days a week to safely and efficiently
meet our customers’ needs. Serving the coastal
and inland markets in the southeastern United
States. Member of the Association of Diving
Contractors International since 1990.
Sealing Systems, Inc.(113)
Sherwin Williams Coatings(336)
Pollardwater(631)
NSF International(213)
PC Construction(604)
Contact: Travis LeFever
401 Hein Drive, Garner, NC 27529
802-651-1339
[email protected]
www.pcconstruction.com
Construction of water and wastewater
treatment plants, pump stations and heavy civil
infrastructure projects.
Pure Technologies(202)
S&ME, Inc.(312)
Madrid’s Maintenance
Management Solutions (222)
McGill Associates, P.A.(241)
Contact: Bill Cowan
55 Broad Street, Asheville, NC 28801
828-252-0575
[email protected]
www.mcgillengineers.com
McGill Associates offers multi-disciplined
consulting, engineering and landscape architecture
services to clients throughout the Southeast.
With more than 100 professional engineers and
support staff in six regional offices, we bring
innovative, real-world solutions to regional projects.
Whether it’s civil, environmental or electrical
engineering, planning, landscape architecture or
public finance needs, McGill Associates has the
expertise needed for any size project.
Premier Water, LLC
(218, 220, 224, 212,
210, 208, 206, 228, 226)
Steven Young
4726-C Park Road, Charlotte, NC 28209
704-523-4048
[email protected]
www.premier-water.com
Premier Water is a manufacturer’s representative
organization with the broad goal of providing the
highest quality products and committed service
to the professionals serving the water and
wastewater treatment industry in North Carolina.
Contact: Thomas Towler
200 Atlantic Avenue, New Hyde Park, NY 11040
800-437-1146
[email protected]
www.pollardwater.com
Serving the water and wastewater industry as
the preferred tool manufacturer and supplier
since 1837.
SpectraShield Liner Systems(234)
Contact: Sims Rhyne
4527 Sunbeam Road, Jacksonville, FL 32257
904-419-4889
[email protected]
www.spectrashield.com
SpectraShield® a patented, systematic layering
of polymer resins designed to rehabilitate
and protect wastewater structures such as
manholes, wet wells, or wastewater treatment
plant facilities.
PPG Protective and Marine Coatings(129)
SR&R Environmental, Inc.(201)
PeroxyChem, LLC(507)
54
Precon Tanks(334)
Pat Wheeler
115 SW 140th Terrace, Newberry, FL 32669
352-332-1200
[email protected]
www.precontanks.com
Prestressed concrete tanks for water and
wastewater storage and treatment.
Synagro(436)
Team Industrial Services(538)
Tnemec(117)
Click Here
NC AWWA-WEA
NC AWWA-WEA
Exhibitors
Trihedral Engineering Limited(135)
Vogelsang(237)
USA BLUE BOOK(638)
W.K. Hile Company, Inc.
Valve Specialties, Inc.(439)
Water Guard, Inc.(503)
WC Equipment Sales Contact: George Mitchell
PO Box 249, Harrisburg, NC 28075
704-455-5600
[email protected]
www.valvespecialties.com
Valve Specialties, Inc., is a manufacturer’s
rep firm incorporated in 1987, offering high
quality and innovative valve solutions for
the most demanding water and wastewater
applications. Primary lines include: Valmatic,
Red Valve, Tideflex and Permox CTF (coal tar
free) sewer coatings. Newest offerings include
the checkmate inline check valve and the all
stainless surge suppression air valve.
(535)
(209, 207, 205)
Willis Engineers(401)
Contact: Chuck Willis
10700 Sikes Place, Charlotte, NC 28277
704-377-9844
[email protected]
www.willisengineers.com
For over 50 years, Willis Engineers has designed
technically superior water and wastewater
facilities that ensure long-term performance and
efficient operation.
Contact: Reyn Wheeler
4324 Brogdon Exchange, Suwanee, GA 30024
704-991-5339
[email protected]
www.wcequipment.com
Representative for highest quality water and
wastewater treatment equipment including
pumps (many types) vacuum collection systems,
separators, screens, chemical metering, dry and
bulk chemical storage and handling, aeration
equipment, clarifiers, filters, manhole monitoring
systems, pressure regulation and surge vessels,
grit and grease removal, biological odor control,
service and start-up.
DIVING & UNDERWATER CONSTRUCTION
Serving the Water Treatment and Wastewater
Treatment Industries throughout the Southeast
•
•
•
•
•
•
•
•
Potable & Contaminated Diving
Pipeline & Tunnel Penetrations
Elevated Tank & Clearwell Inspection / Cleaning
Traveling Screen & Trash Rack Maintenance / Repair
Pump Station Maintenance
Gate & Valve Maintenance / Repair
Digital Video Inspections With Detailed Written Reports
Underwater Burning & Welding
BUSINESS DEVELOPMENT CONTACTS
Jack C. Harrelson, Jr.
[email protected]
Dillard Salmons
[email protected]
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Originally titled ‘Spring Fling,’ the first
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technical sessions on water, wastewater
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will also include two forums. All of these
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each day.
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Trenchless
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Tunnel Vision – A Primer on Trenchless
Construction Methods and Experiences for
Pipelines in the Piedmont Geology
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Trenchless Technology: NOT A BORING SUBJECT
What is Trenchless Technology?
By Steve Hilderhoff, PE - Dewberry
The name pretty much says it all –
trenchless technology is a means to
construct, rehabilitate or inspect existing
underground pipes and structures with
little or no need to dig a trench. The
North American Society for Trenchless
Technology’s (NASTT) technical definition
is as follows: “A family of construction
techniques for installing or rehabilitating
underground infrastructure with minimal
disruption to surface traffic, businesses, and
residents. It also includes technologies for
inspection, leak location, and leak detection
with minimal disruption and minimal
excavation from the ground surface.”
This edition of NC Currents will focus
on the trenchless industry, with several
articles about the topic. In addition,
this article provides an introduction into
trenchless technology by outlining the
three main areas of trenchless practices:
construction, rehabilitation and condition
assessment. The following table identifies
some prominent trenchless methods within
each particular category.
TRENCHLESS CONSTRUCTION
Many options are available for construction
of new buried assets without the need for
significant excavation. Determining which
method is most appropriate requires an
understanding of many factors including,
but not limited to, purpose (e.g., water
TRENCHLESS
CONSTRUCTION
• Horizontal auger boring (a.k.a. bore
and jack)
• Horizontal directional drilling (HDD)
• Pipe jacking
• Pipe ramming
• Tunneling via Tunnel Boring Machine
(TBM) and Microtunnel Boring
Machine (MTBM)
•Handmining
62
main, gravity sewer, force main), utility
size, length to be installed, soil conditions,
surface features, subsurface features,
groundwater, and possible environmental
contamination. A brief summary of each
method follows:
1. Horizontal Auger Boring
(Bore and Jack) – Auger boring involves
the use of an auger machine to bore
a cylindrical hole in a linear fashion.
The surrounding soil is stabilized by a
casing pipe (inserted by powerful jacking
devices) while the spinning auger removes
the soil from the face of excavation back
to the launching pit. Once the casing is
installed, a carrier pipe can be strung
through the casing. Mixed soil conditions of
rock and soil or encountering obstructions
such as boulders or manmade items may
result in a failed installation.
2. Horizontal Directional Drilling (HDD)
– HDD creates a pilot bore along the
design pathway and reams the pilot bore
hole to a larger diameter in one or more
additional passes to a diameter suitable
for the carrier pipe, which is pulled into
the prepared bore in the final step of
the process. The process is steerable
and follows a vertical arc and possibly
a horizontal arc, too. One significant
advantage of HDD is that no excavation
TRENCHLESS
REHABILITATION
• Cured-in-place (CIP) lining (a.k.a.
relining)
•Sliplining
• Pipe bursting
• Coating systems
•Grouting
is necessary to install the pipe. HDD in
rock is possible, but can be more costly
than other trenchless methods because
of the equipment and number of reams
necessary to remove rock. In addition,
HDD is not recommended in mixed soil
conditions with rocks/boulders.
Horizontal auger bore launch pit.
HDD pullback.
TRENCHLESS
CONDITION ASSESSMENT
•Camera
•Acoustic
•Electrical/electromagnetic
•Laser
Click Here
3. Pipe Jacking – Pipe jacking is the
installation of a casing pipe using jacks that
force the casing pipe forward while workers
remove soils from the face of the jacked pipe.
Jacking requires a minimum casing pipe
diameter of adequate size (say 48-inches) to
allow for working space and soil removal.
Jack hammers, picks, shovels and even
rock blasting are used to remove material.
4. Pipe Ramming – Pipe ramming is
accomplished by percussion hammering a
casing pipe through the soil, and is used
in softer soils, but not solid face rock.
As the casing is progressed forward,
the soils are simply ‘gobbled up’ and
then removed by an auger, air or water
jetting. Pipe ramming is non-steerable,
and as such, not typically used for gravity
sewer main installation. Pilot tube pipe
ramming can, however, be used to
achieve accurate grades, but the current
technology is not widely available.
Pipe Jack.
Pneumatic pipe rammer.
Oftentimes the myriad of options can
be overwhelming when determining
an appropriate rehabilitation method.
When determining which method is
most appropriate, many factors should
be considered. Some factors include
structural or non-structural repair, traffic
impacts, corrosion resistance, duration
of temporary bypass pumping around
work, gravity flow pipe or pressure pipe
rehabilitation, need for additional capacity,
nature and severity of defects, little or
no allowable excavation and so on.
The following list of trenchless rehabilitation
CIPP.
methods is intended to simply introduce
readers to the various available options.
1. Cured-In-Place (CIP) Lining – CIP
involves impregnating a fabric with a
resin and, once inserted into the pipe or
structure, air or water is forced into the liner
so it expands to the inside shape of an
existing pipe or conduit and allowed to cure.
Curing can be done by steam, hot water,
ultraviolet light or ambient air temperature.
In addition, CIP can be used on different
shapes and sizes of structure. Liners do
not bond to the host pipe or structure, but
5. Tunnel Boring Machine and Micro
Tunnel Boring Machine (TBM and MTBM)
– NASTT defines a TBM as “A full-face
circular mechanized shield machine, usually
of man-entry diameter, steerable and with
a rotary cutting head.” TBM is used for
larger diameter casing pipe projects. Where
smaller diameter casings of approximately
30 to 96-inch are required, MTBM can be
used. MTBM is similar to TBM, except that
it is remotely controlled from above the
ground (i.e., too small to fit a person within
the equipment). Sometimes, the casing pipe
serves as the carrier pipe in which case the
process is referred to as a ‘one pass install.’
6. Handmining – A handmined tunnel
is the oldest method available in the
trenchless industry. The tunnel must be
large enough for equipment and personnel
to manually remove soil from the face of
excavation. This method is slow and costly,
but provides accuracy and handling of hard
rock or obstructions. Nearly any shape, size
or distance can be handmined.
704-523-4048
www.premier-water.com
TRENCHLESS REHABILITATION
Many trenchless rehabilitation methods are
available for the water and sewer industry.
Click Here
www.ncsafewater.org
63
Static pipe bursting
Rehabilitated manhole
rather fit to the host pipe’s shape. CIP offers
many benefits, and depending upon the
liner thickness can provide either partial or
full structural stability.
3. Sliplining – Sliplining is the simple
method of installing a smaller pipe inside a
larger pipe. Once installed the void space
between the two pipes is filled with grout
and the ends sealed. While this method
reduces cross sectional area because
of the smaller pipe diameter, it does
limit excavation to entry points, service
reconnections, and defect repairs necessary
such that the new pipe can successfully
pass through the host pipe. Carrier pipes
can be continuous length (e.g., HDPE or
fusible PVC), segmental (i.e., sections of
pipe) or even spiral wound. A ‘U’ shaped
liner that is reformed inside the host pipe is
a modified sliplining method.
2. Pipe Bursting – Pipe bursting involves
either pushing or pulling new pipe through
existing pipe and as the process proceeds
forward, a bursting head (which is larger
than the existing pipe) causes the existing
pipe to fracture and be expanded into
the surrounding soil. With this method,
excavation is necessary for launching pits,
receiving pits, service reconnections, and
appropriate existing pipe repairs. Pipe
bursting offers moderate pipe upsizing,
and the existing soil conditions and the
host pipe type, fittings and bends can
affect its success.
4. Coating Systems – Coating systems
can include polyurethanes, polyurea,
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epoxy, and cement. Within each of these
categories, even more coating system
options are available. The success of
these products is highly dependent upon
existing surface condition, quality of
surface preparation before application,
existing water infiltration and the
applicator’s care and ability. Determining
which product to use depends upon
chemical resistance, abrasion resistance,
cure time, substrate condition, structural
or non-structural rehabilitation, and
application environment (potable water or
sewage) – just to name a few.
5. Grouting – NASST defines grouting as
“filling voids or modifying/improving ground
conditions. Grouting materials may be
cementitious, chemical, or composed of
other mixtures.” Pipe grouting is typically
performed by use of a packer whereby
the grout is forced into cracks, joints or
service connections. Structural grouting is
achieved by forcing grout through injection
holes (ports) drilled into the structure. As
grout is injected, it permeates through
the void into the surrounding soil thereby
creating a seal.
TRENCHLESS
CONDITION ASSESSMENT
Trenchless condition assessment is a
field with many available options and
worthy of extensive discussion beyond
this brief summary. Structures, gravity
flow pipes and pressure pipes can be
inspected within the assessment process.
The Environmental Protection Agency
(EPA) has divided inspections into five
groups; camera, acoustic, electrical/
electromagnetic, laser and emerging
technologies. Some inspection devices
can cross over into location and leak
detection as well. In addition, they can also
be categorized into destructive and nondestructive methods.
1. Camera – Camera inspection is the
most commonly used method in the
sewer industry, and includes the traditional
closed-circuit televising (CCTV) camera
and sewer scan technology. Cameras can
crawl, can be pushed or pulled through
Click Here
pipes, and can be pole mounted with
zoom cameras. CCTV inspection is not
intended for full-pipe flow conditions.
2. Acoustic – Acoustic inspection (and leak
detection) detects vibrations and sound
waves by use of devices either on a pipe or
traveling through a pipe. Some acoustical
methods are non-intrusive as they are
attached to or rest upon some feature of
the pipe network. Other technologies are
inserted within the pipe and travel some
distance while collecting data and ultimately
retrieved/captured. The data from acoustical
devices is then downloaded and interpreted
to determine condition based upon leaks.
Regarding sanitary sewer applications,
sonar systems can be used for full-pipe
conditions such as surcharged sewers,
siphons and submerged outfalls.
3. Electrical/Electromagnetic –
Electromagnetic inspection methods are
based upon either the magnetic flux leak
(MFL) or eddy current (EC) principals.
Thus, they only apply to either a ferrous
pipe or a pipe with a ferrous component
(e.g., wires, bars). Magnetic flux
methods detect metal loss by changes
in magnetic flux, and EC measures
changes in impedance to detect defects
and failures.
4. Laser – Laser profiling creates an
image of the pipe’s interior wall by
transmitting a 360-degree beam. By
determining pipe shape, many aspects of
the pipe’s condition can be determined
such as shape, debris accumulation and
service connection location. Lasers are
often used in conjunction with cameras
or acoustic methods as an added
assessment tool.
ADDITIONAL INDUSTRY
INFORMATION
There are many trenchless industry trade
associations. Two prominent organizations
include the National Association of Sewer
Service Companies (NASSCO) and North
American Society for Trenchless Technology
(NASTT). Each association provides a
forum for education, training, guidance
documents, sample specifications, and
even employee certification in some cases.
NASSCO also has divisions such as the
International Infiltration Control Grouting
Association and International Pipe Bursting
Association. The Environmental Protection
Agency (EPA) and the Water Environment
Research Foundation (WERF) also offer
guidance documents.
Within North Carolina, the NC
AWWA-WEA Wastewater Collection and
Water Distribution Systems Committees
provide a forum that offers information
on important water and sewer topics
including systems operation and
maintenance and the regulatory climate.
As such, these groups often discuss
trenchless practices as they pertain to the
water and wastewater industry.
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65
Tunnel Vision
A Primer on Trenchless Construction Methods
and Experiences for Pipelines in the Piedmont Geology
By Jonathan S. Lapsley, PE and Christopher M. Kolkhorst, PE – CDM Smith
As the Carolinas have grown rapidly the past
15 years, particularly along the Interstate
85 corridor, many large-diameter water and
sewer pipelines have been constructed
to meet water and wastewater demands
of the expanding population and aging
infrastructure. Many projects have extensively
used trenchless construction methods
to minimize impacts on urbanized areas,
cross roadways and railroads, maintain
public and commercial operations, and limit
environmental impacts and disturbance.
Typical trenchless construction methods
for pipelines installed in the Carolinas include:
• Bore and jack
• Hand-mined liner plate tunnels
• Hand-mined jacked casing pipe
• Machined tunnels
Each method offers distinct advantages
and disadvantages. These methods and
their recent application in the Carolinas are
highlighted below.
Figure 1
66
BORE AND JACK
Bore and jack methods have been used
extensively in the Carolinas. While typically
chosen for smaller-diameter utilities,
improved technology allows bore and jack
methods to be used for larger crossings.
Casing diameters up to 72-inches, and in
some cases larger, are now available.
In ideal soils, bore and jack methods can
be cost-effective and allow a rapid crossing
of obstacles. For large diameter crossings,
bore and jack methods can pose risks:
increased exposure of the tunnel crown
(the tunnel/crossing at the 12 o’clock
position) at the face of the excavation,
difficulty handling hard rock and mixed
face (i.e., a mix of soil and rock) conditions,
limited access to the face of the excavation
to make repairs, and limited equipment of
regional contractors.
One example of a bore and jack
project is the Water and Sewer Authority
of Cabarrus County WSACC’s Fuda
Creek Sanitary Sewer, which included two
trenchless crossings of North Carolina
Department of Transportation (NCDOT)
roadways. Originally bid as hand-mined
tunnels, the contractor proposed and was
approved for bore and jack methods.
A 60-inch casing was installed with a 24-inch
carrier sewer pipe. Geotechnical borings
indicated that the area likely contained
substantial rock either in outcroppings or
mixed face conditions. These subsurface
conditions led to the casing pipe becoming
stuck halfway through the crossing,
damaging the boring augers (see Figure 1)
and the contractor ultimately finishing
installation with hand-mining methods.
HAND-MINED LINER PLATE TUNNELS
Hand-mined liner plate tunnels are a tried
and true method used on some of the
first tunnels constructed. This method is
typically appropriate for tunnel diameters
54-inch diameter and larger to provide
access for workers to enter the tunnel and
perform the work. While mitigating risk by
allowing adaptability to changing geologies
and groundwater, it slows progress and
increases costs per linear foot compared
to bore and jack methods. Blasting, jack
hammering, or chemical expanders can
all be used to remove rock in hand-mined
tunnels. Typically, a shield is installed at the
face of the excavation to protect the crown
of the tunnel and minimize potential for
ground settlement.
Charlotte Water successfully used the
hand-mined liner plate tunnel method
crossing Tyvola Road to install a 72-inch
diameter gravity relief sewer discharging
into the 200-mgd influent pump station at
Charlotte Water’s Sugar Creek Wastewater
Treatment Plant. For this tunnel, 96-inch
Click Here
Figure 2
diameter liner plates accommodated the
72-inch sewer. The tunnel encountered
mixed face conditions of rock and soil.
The strength of liner plate construction
was proven when a rain event flooded the
tunnel and eroded the roadway banks –
but did not damage the tunnel liner plates
or the excavation face (see Figure 2).
Seven large-diameter hand-mined
liner plate tunnels were constructed in
varying subsurface and groundwater
conditions during the first two phases
of Charlotte Water’s Briar Creek Relief
Sewer project (with more tunnels
proposed for Phase III), proving this
method’s adaptability. This method also
provides flexibility to meet stringent
requirements set by regulatory agencies
and owners of aboveground features. For
example, the Phase II project required
crossing a CSX railroad in extremely hard
rock. The CSX encroachment agreement
prevented blasting within the railroad
right-of-way. Hand-mining with liner
plates, expansive chemical, and jack
hammering methods allowed the crossing
to be completed without damage to the
railroad and within the requirements of the
encroachment agreement.
Once a hand-mined tunnel is
completed, the carrier pipe is placed using
rails or spacers to position the pipe and
bell up the joints inside the tunnel. Figure 3
shows pipe in the Briar Creek Relief Sewer
being placed into one of the many tunnels
on the project.
Click Here
Figure 3
HAND-MINED JACKED CASING PIPE
Another type of hand-mined method is
using a jacked casing pipe (similar to the
bore and jack method) but with hand
mining rather than augers at the excavation
face. This type of construction is most
commonly selected for 54-inch-diameter
and larger crossings for reasons
mentioned previously. This method may
increase production and construction
speed over hand-mined liner plate
methods. This method readily adapts to
changing geologies and groundwater
with rock removal occurring by blasting,
BEFORE
AFTER
WATER & WASTEWATER CONSTRUCTION
MAINTENANCE REPAIRS IMPROVEMENTS
INSPECTIONS SALES & INSTALLATION
WELL DRILLING & REHABILITATION
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67
Figure 4
Figure 5
Figure 6
jack hammering, or splitting/chemical
expanders. A shield is also typically
installed with this method to protect the
crown, minimize settlement, and promote
worker safety. Most regional bore and jack
contractors are experienced with this type
of equipment.
Charlotte Water’s Southwest Water
Main Phase B project included several
72-inch diameter casings constructed
in this fashion for a 48-inch water main
pipe. Project crossings were primarily
constructed in soil with a casing shield
constructed by cutting out the bottom
half of the leading piece of casing pipe.
A local contractor in the Charlotte area
was cost-competitive on this large-diameter
trenchless work through this alternate
construction method. Figure 4 shows
a piece of casing pipe being jacked
into place.
MACHINED TRENCHLESS CROSSINGS
A variety of machines can be used to
construct trenchless crossings. Machines
can be highly accurate and cost-effective
for large diameter or long crossings.
Machines typically require consistent
68
Figure 7
geology–either soil or rock–to properly
select the type of machine and its frontmounted cutting head. Due to the cost of
purchase and specialty operations, limited
qualified contractors are available for this
construction method. This typically leads
to higher installed costs for trenchless
crossings of smaller obstacles. Specialty
tunnel boring machines also result in
larger equipment mobilization costs and
potential costs for delays if the machine is
challenged due to unforeseen subsurface
conditions.
Machined tunnels were constructed on
Charlotte Water’s Irwin Creek Relief Sewer
Projects in both soil and rock conditions
(see Figure 5). Contract I included 745 feet
of an 84-inch soil machine crossing of I-77.
Contract II included a 1,300-foot machined
tunnel across a Norfolk Southern railroad,
an I-77 access ramp, and Wilkinson
Boulevard (1,300 feet). This project also
included a 190-foot microtunnel crossing
of East 5th Street (see Figure 6) with
a remotely steered machine. The Irwin
Creek projects recognized variability in the
Piedmont area geology, leading to multiple
methods being employed.
Machined tunnel methods were also
part of Charlotte Water’s Southwest Water
Main Phase A project at the CharlotteDouglas International Airport, which
included twelve individual trenchless
crossings ranging up to 96-inches and
2,400 feet of rock tunnel (in two tunnels).
One tunnel had fractured rock at the crown
in the last several hundred feet, which
impacted the ability of the machine to
proceed. The tunnel was ultimately finished
with open-trench construction methods.
A photo of the tunnel and carrier pipe in
competent rock is provided in Figure 7.
CONCLUSIONS
Experience with over 30 trenchless designs
in the past 15 years in the Carolinas
and the Piedmont geology reveals four
keys to success with trenchless pipeline
construction:
• Conducting sound field investigations
during the design phase to establish
the subsurface conditions, particularly
geologic materials and their consistency
across the crossing length and face.
• Selecting alternate means and methods
to match the subsurface conditions
and contractor capability regionally
available. Faster is not always cheaper!
• Establishing minimum contractor
qualifications based on the scope
of the work and anticipated
construction conditions.
• Anticipating and taking measures to
adequately mitigate risks or share the
risk appropriately.
ABOUT THE AUTHORS
Jonathan S. Lapsley, P.E. is an Associate
Engineer and project manager with CDM
Smith. He is experienced with design
and construction of various water and
wastewater systems. He currently serves
on the NCAWWA-WEA Board of Trustees.
Christopher M. Kolkhorst, P.E. is a
Principal Engineer, project manager,
and local team leader with CDM Smith.
He has 21 years of experience in designphase and construction-phase project
delivery for treatment, pumping, and
conveyance facilities.
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Getting Reacquainted
with Sewer Rehab
By Aaron Frazier, Frazier Engineering, P.A.
INTRODUCTION
The sewer rehab industry in the US has
evolved substantially over the last 25 years.
Rehab products have come and gone
through the years, but cured-in-place pipe
lining (CIPP) has remained (and evolved)
as the primary method used by utilities
throughout North Carolina to rehabilitate
leaking and defective sewer pipes.
CIPP was first introduced to the US in
the late 1970s/early 1980s as a patented
product from Europe with a single installer.
Once the original patent expired in the
1990s, the market was open to additional
products and installers. The opening of the
market to additional installers increased
competition and has driven down prices
over the last 25 years. The CIPP cost in
my first project in 1992 was $70 per foot
for 8-inch pipe. The low bid on a recent
project (March 2015) was $25 per foot
for 8-inch pipe. The drastic reduction in
cost has made the use of CIPP more
widespread and, typically, the preferred
method of rehabilitating sewers.
As more and more competition has
evolved, technological advances have also
been made by the lining companies, from
resin enhancements to changes in how
CIPP is installed. Installers (contractors)
have also changed – from massive
lining conglomerates to small one-crew
operations. All of these changes warrant
close consideration when specifying CIPP
on a sewer rehabilitation project. This
article reviews some of the key issues that
should be carefully considered by all cities
undertaking a CIPP rehab project.
PROJECT IMPLEMENTATION
The first consideration should be
determining the best approach to implement
your rehab project – either by a standard
design approach (televise the sewers,
70
review the videos and develop a detailed set
of design drawings) or by a ‘find-and-fix’
approach (do the television inspections
and design during construction). Each
concept has pros and cons that should
be carefully considered, including the size
of your contract and budget, timeline for
implementation, and preferences by the city.
Charlotte began utilizing ‘find-and-fix’
projects in 2000, before the catchy term
‘find-and-fix’ was created. Since 2000,
Charlotte has saved over $9 million by
following this approach. That is a substantial
savings for Charlotte, and Charlotte prefers
‘find-and-fix’ contracts to the standard
design approach. Other cities across
North Carolina have also seen significant
benefits using this approach. ‘Find-and-fix’
is not for everyone or every contract, but
it is certainly worth close consideration.
‘Find-and-fix’ approaches have been
discussed in NC Currents previously and
at the state conferences, so more detailed
information is available for review from
these previous publications.
CIPP CONSIDERATIONS
AND SPECIFICATIONS
To keep up with the constantly changing
CIPP industry, below are some key issues
that should be considered when specifying
CIPP for your rehab project and developing
your standard specifications.
• What repairs are needed prior
to lining? With more and more
competition and with more and more
new CIPP installers, cities are often
convinced to line through sewers that
have significant issues that should be
repaired (by excavation) prior to installing
the CIPP, such as significant sags in
the sewers and broken or damaged
pipes. This is not a criticism of the CIPP
installers, just a key question that cities
must decide on at the project outset.
It is true that almost any sewer pipe
can be lined through, but does the end
result take care of your ultimate needs
and issues? I have personally seen many
sewers that have been lined with CIPP
that should have had repairs completed
prior to the lining, and cities are now
dealing with additional repairs several
years after the lining was completed to
completely solve the problem. Decide
on your own criteria for what is lined and
what isn’t lined, and always consider the
long-term.
• What experience requirements are
you comfortable with? There are CIPP
installers doing work in North Carolina
that have a few thousand feet of CIPP
experience all the way up to many millions
of feet of CIPP. What is important for
your project? What diameters will you be
lining? You definitely want contractors
with experience (on your size sewers) and
the financial backing to stand behind their
product and deal with problems that will
inevitably arise. Don’t just accept anyone
as your CIPP installer. Do your homework,
check references, make sure the
contractor is qualified and experienced.
Also, specify experience requirements
for the superintendent that will be on
your project – it is critical that your
superintendent has significant experience.
Engineers should be experienced too.
• Water cure versus steam cure:
Water installation and curing of CIPP was
the original method used and is still widely
used today. Steam cure came and went
in the 1990s/early 2000s but is now a
more widely used method. Steam is the
preferred method by many contractors
today since it is much quicker than water
cure. What are you comfortable with?
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What are your specific sewer conditions
that you will be lining through? Water
cure will work in pretty much every
circumstance. Steam cure has some
limitations that, if not adhered to,
could lead to failure of the lining.
We specify both, but do put limitations
on when and where steam can be
used. We were guinea pigs for steam
cure back in the early 2000s, and we
had several liner failures that led to
sewer overflows. Do your due diligence
when selecting the installation method.
Make your own decisions and don’t
assume either method is appropriate
for every circumstance, because that is
not the case.
• UV cure: UV Cure is the new kid on
the block. UV-cured CIPP is much
stronger than traditional CIPP. Due to
its strength, UV installers push to
install much thinner liner. Are you
comfortable with installing a much
newer technology with limited
experience? Are you comfortable
with a much thinner liner? I personally
have no experience with UV liner
installations except for performing
liner calculations for a few of the
UV installers. The product looks
promising. I plan on watching for
a while to see how this technology
further unfolds over the long term and
what long-term experiences cities
have with the installed product.
• Filled resins versus non-filled resins:
Resins have changed dramatically over
the last several years. It seems there
are hundreds of options. Most CIPP
installers utilize resins that contain
fillers to lower their costs. Non-filled,
premium resins are more costly but
provide a premium product. What are
you comfortable with? What fillers are
being added to your resin? What are
the cost implications? Do your due
diligence on this topic as the resin
is ultimately your final CIPP product.
Study the details of the proposed resin,
ask questions, and make sure you are
getting what you specified. Any added
fillers should really only be for strengthenhancing purposes.
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• Styrene-based resins versus nonstyrene-based resins: The resins
used in CIPP contain styrene, which
is deemed a hazardous material by
the EPA. Styrene is the odor you smell
during the CIPP curing process, and
often prompts complaints and concerns
from citizens and environmental groups.
It seems styrene complaints and
concerns have increased over the last
several years. As an alternate, nonstyrene-based resins are now available,
but these resins substantially increase
the cost of the CIPP. In addition,
contractors have very little experience
with these resins. If you have some
very sensitive areas, maybe you should
consider a non-styrene resin. Always
include an action plan for if/when a
styrene complaint occurs – it is critical
to address any such complaint in the
correct manner or the complaint may
lead to much bigger issues.
• Specify your desired finished
properties of CIPP: It is important to
specify exactly what you expect your
final installed CIPP product to be in
terms of strength and thickness, and
don’t waiver from your specifications.
Test the installed CIPP using a certified
independent testing lab, test the CIPP
often, and stick to your specifications.
Yes, there will be reasons provided for
why a failed test might have occurred.
Consider those reasons carefully
but stand by your specs as much
as possible.
• Pay close attention to the details:
With more and more CIPP being
installed throughout North Carolina,
the tendency seems to be, in many
cases, to rely heavily on the contractors
to get the lining installed quickly and
for them to ‘do what they know how
to do.’ Utilities still need to pay close
attention to the details to make sure
the CIPP meets their long-term needs
and objectives, and not just rush
to get liner installed. For example,
one big detail that seems to get
overlooked is specifying how to seal
the CIPP connection at the manhole.
A waterstop must be used at the
manhole connection or infiltration will
continue. It takes extra time to install
the waterstop, but it is critical to
stopping the water. Another detail that
often gets overlooked is fully opening
and brushing the service connections
smooth. This takes time, and often
contractors are pushed to move to the
next installation.
Sewer Rehabilitation Design
Asset Management
Sewer Flow Monitoring
SSES Services
Frazier Engineering is ready to
help you find and repair collection
system problems, reduce SSO’s
and improve capacity.
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Stanley NC 28164
704.822.8444
www.ncsafewater.org
71
• Document the CIPP process from
beginning to end: It is important to
track the CIPP process from beginning
to end. Start at the wet-out facility
(where the CIPP is made) and make
sure you get the wet-out reports to
document all components that went
into making the CIPP. Get resin and
felt certifications. Make sure you know
if any products or components of the
CIPP have changed (contractors may
switch resins from time to time due to
cost fluctuations). Make sure you get
the installation reports that document
times and temperatures for each
phase of the installation all the way
through cool-down. Make sure you
know how each section of CIPP
was supposed to be installed. You
are basically making a pipe product
in the field so you need to document
exactly how the pipe (CIPP) was made.
• Always perform and review
post-CIPP televisions inspections:
It is standard practice to televise CIPP
after it is installed. It is critical that
the post-CIPP inspections be closely
reviewed and defects identified and
repaired. You do not want to accept j
ust any liner as it is installed. There will
be issues with the CIPP from time to
time that need to be addressed for
the long-term good of the utility.
Everyone is busy these days, but take
the time to closely review every foot of
post-CIPP video.
• Inspect the CIPP work using a trained
inspector: It is essential that the CIPP
installation be closely inspected by an
experienced inspector. CIPP is much
different than other sewer construction,
and knowing what to do and look for is
critical to the long-term success of the
CIPP liner. The National Association of
Sewer Service Companies (NASSCO)
now offers a CIPP inspector training
class that I hear is very good. Training
may be also possible through
experienced engineering firms. Investing
in training inspectors really is a key to
long-term success.
CONCLUSION
CIPP is being used by so many cities
across North Carolina. The CIPP industry
has changed tremendously over the last
several years, and it continues to change.
Cities must keep up with the changes to
make sure their CIPP installations are quality
installations that will meet their needs for the
long term. Change is good. Enhancements
and improvements to CIPP technologies are
good. But each change should be closely
reviewed to make sure it is good for the city.
ABOUT THE AUTHOR
Aaron Frazier, P.E., is the Owner and
President of Frazier Engineering, P.A.,
located near Charlotte, NC. Frazier
Engineering specializes in sewer
rehabilitation design and construction
management, having designed over 3 million
feet of CIPP lining over the last 17 years.
72
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Two New Promising Tools
for the Condition Assessment of
Ferrous Pressure Pipelines
By Henry R. (Kelly) Derr, PE and Jim Perotti, PE, Brown and Caldwell, Raleigh, NC
INTRODUCTION
Prior to about 2005, the condition
assessment of pressure pipelines, including
wastewater force mains and water mains,
was limited by lack of access to the pipe
interiors and by limited selection of reliable
inspection technologies. While pipeline
access continues to be an issue due to a
lack of insertion and retrieval points on most
mains, the number of inspection technologies
has expanded significantly and the quality
and reliability of the condition assessment
data has improved as well. This is particularly
true for ferrous pipelines. A number of
technologies have been developed for
both in-line and external assessment of
pipe wall conditions in metallic pipes.
Two of the latest additions to the ferrous pipe
inspection toolbox are the SmartBall® PWA
tool introduced by PURE Technologies Ltd.
(PURE) and the Bracelet Probe developed
by PICA Corporation. Each of these tools will
be illustrated through a recent case study
conducted by Brown and Caldwell (BC).
Figure 1. Graphic of magnetic anomalies.
74
PURE’S SMARTBALL PWA
The Mount Pleasant Waterworks (MPW)
in Mount Pleasant, South Carolina, has
undertaken a comprehensive inspection
and condition assessment of their
wastewater force main (FM) inventory
and especially their ductile iron pipe
(DIP) force mains. Critical force mains
have been inspected using in-line
electromagnetic tools such as PICA’s
SeeSnake where feasible. Their 16-inch
diameter DIP FM along Highway 17
posed significant technical challenges
to an in-line inspection due to the
presence of several plug valves on the
main, which could interfere with the
passage of the SeeSnake. The SmartBall
PWA free-swimming acoustic tool from
PURE was selected as an alternative
since it could negotiate the plug valves.
The SmartBall PWA acoustic tool had
been fitted with a magnetometer to
enable the analysis of the pipe wall
conditions along the pipeline.
All ferrous materials exhibit a
background magnetic field, which can
be detected by the magnetometer. When
the ferrous material is under stress, the
magnetic field is perturbed. Pipe wall stress
can occur due to a number of causes,
including casting anomalies, point load
stresses or wall loss due to corrosion.
A graphic illustration of the impact of
stresses on the magnetic field is presented
in Figure 1.The results of the SmartBall
PWA inspection along a portion of the
Highway 17 FM are shown in Figure 2.
The data shows the presence of air
pockets (in blue) and the presence of
anomalies in the pipe wall magnetic
field (in shades of brown). The data is
especially valuable when a magnetic
anomaly overlays an area where the
sound of an air pocket was detected.
This provides a stronger indication
that the pipe wall is under stress due
to internal corrosion, caused by the
gas pocket. As noted in Figure 2,
Figure 2. Example of SmartBall PWA results.
Click Here
the gas pocket (in blue) and an ‘extra
large’ magnetic anomaly (red dot) are
considered a high priority for excavation
and direct measurement of the wall
condition using an external tool such as
ultrasonics, Broadband electromagnetic
(BEM), or the Bracelet Probe, a new
technology discussed below. It is
important to note that the PWA tool is
best used as a screening tool. While it
will not provide direct measurement
results, it will provide good indications of
where to inspect, especially when paired
with the acoustic tool. This approach
provides data needed to determine where
pipe failures are most likely to occur,
allowing better decision-making on
follow-up actions for repair, rehabilitation,
or replacement.
BC and PURE are working with MPW
to schedule excavation of selected critical
locations along the pipeline to perform
direct measurement of the remaining wall
thickness for the condition assessment.
PICA’S BRACELET PROBE
The City of Minneapolis, Minnesota owns
several large diameter steel water main
river crossings. One of these is a 54-inch
diameter main suspended under the
10th Avenue Bridge. The City had been
concerned with the condition of the
pipe wall, both internally and externally,
due to corrosion and uncertainty over
the condition of the internal wall lining
systems. An in-line electromagnetic
inspection tool capable of detecting
small defects was not feasible due to
the size of the pipeline and to the lack of
access to the interior. PICA’s new external
electromagnetic tool, the Bracelet Probe,
was proposed for this inspection. This is
a somewhat non-typical use of the tool
since the full length of the river crossing,
approximately 1,000 feet, is exposed with
a suspended catwalk to provide access
to the pipe exterior, as shown in Figure
3. The tool is more commonly used within
an excavated pit up to about 12 feet in
length. As shown in Figure 3, the exterior
of the pipe and its bitumastic coating
exhibited areas of deterioration due to
weather and dripping of road salts from
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Figure 3. View of 10th Ave. Bridge water main exterior and bracelet probe tool.
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Figure 4. Screen shot of bracelet probe field monitor.
Figure 5. Expanded area of screen showing anomaly.
the bridge. The Bracelet Probe tool is
shown in Figure 3, as well. The tool uses
a magnetic field to detect anomalies in
the metal wall. As the tool is moved along
the surface of the pipe, any changes in
the pipe wall, such as pits, will appear
as perturbations in the magnetic field.
The magnetic field is monitored in real
time by the equipment operator and any
anomalies are marked on the wall surface.
Figure 4 provides a screen shot of
the monitor during the calibration of the
tool, prior to the inspection. A portion of
the recording is expanded in Figure 5 to
illustrate the impact of an anomaly in the
pipe wall on the magnetic field recording.
As with the SmartBall PWA, the Bracelet
Probe tool is typically used as a screening
76
tool. Its advantage is that the tool
immediately indicates areas of interest
(magnetic field anomalies) in the field.
These areas are marked by the operator
as the inspection proceeds. The operator
will then take direct wall thickness
measurements at the indicated locations
using ultrasonic tools.
The areas of external corrosion
were positively detected by the Probe,
providing assurance that it was yielding
useable results. Areas of corrosion were
identified on the interior of the pipe near
the pipe supports, which indicated that
at least portions of the cement mortar
liner have failed. Once all the data has
been collected and reviewed, it can
be determined if additional invasive
inspection efforts are needed to make
decisions on whether to repair, rehabilitate
or replace sections of the main.
These tools extend our toolbox for
inspecting ferrous pipelines, especially
where the use of an in-line tool is not
feasible either due to obstacles within
the pipeline (certain types of valves, tees,
etc.), lack of access to the interior, or
economic reasons. Both tools are good
screening tools that provide useful data
on the location of anomalies within the
pipe wall. Based on the results of the
screening analysis, the investigator is
able to select critical locations for direct
measurement of remaining wall thickness
using ultrasonics or other externally
applied electromagnetic tools.
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Plan B for HDD: Customizing a
Challenging Installation
By Andrew S. Vane, P.E., Hazen and Sawyer
“Just bore it!”
“You can easily micro-tunnel under
the stream.”
“Let’s avoid the gravity sewer by
directional boring under the roadway.”
If you’re a consultant, you’re probably
hearing more and more of these
statements at meetings attended by
regulatory personnel, clients, and other
engineers. While trenchless methods
have seen great advances in the last 20+
years, some decision makers may still
be unsure which method is best for their
particular project. As trenchless design
professionals, we need to be sure our
clients are fully informed of the practical
aspects, limitations, and constraints
of the specific types of trenchless
installations. In many cases, proposing
a trenchless method is on the right track
but the specific method utilized should be
weighed against other potential options.
This was certainly the case for one of
my long-term projects, the Lake Marion
Regional Water System (LMRWS).
The LMRWS was conceived as a way to
bring a sustainable source and high-quality
drinking water to the low country of
South Carolina. The investment in
infrastructure by the LMRWS was also
conceived as a way to hopefully attract
industry and growth while creating new
jobs and opportunities along the I-26
and I-95 corridors.
One challenging section of the
Lake Marion Regional Water System
(LMRWS) expansion was the 16-inch
diameter, six-mile long Harleyville Water
Transmission Line extension. Installation
of the Harleyville Water Transmission Line
would require crossing the 8,500-foot
wide Four Holes Swamp wetland that
meanders its way through Orangeburg
and Dorchester Counties and is a tributary
drainage basin to the Edisto River.
From the very onset of planning and
preliminary design, the Four Holes Swamp
crossing loomed as the major challenge
of this next pipeline reach.
A portion of the Harleyville Water
Transmission Line was proposed to
extend along portions of Highway 453.
Figure 1: Construction corridor across Four Holes Swamp.
78
Highway 453 connects the towns of
Holly Hill and Harleyville, serving primarily
as a cut-through between Interstate
26 and Highway 176 and a major
trucking access road for cement plants.
Unfortunately, Four Holes Swamp
drains through the middle of the route.
The corridor proposed for the Harleyville
Water Transmission Line encompassed
existing electric transmission, highpressure gas transmission, CSX railroad
line, and Highway 453 all within a
200-foot-wide stretch that crosses the
swamp. Within the corridor, Highway 453
is on an earthen embankment with three
bridges that allow the swamp to drain
southeast. To complicate things further,
the surrounding property is owned by the
Audubon Society.
While a 200-foot-wide corridor initially
appeared like plenty of space for a
16-inch water main, research quickly
proved otherwise. The eastern 75 feet
were occupied by CSX railroad. Obtaining
a parallel easement from CSX would be
cost and time prohibitive. It was also
not feasible to shut down traffic and put
the water main under the pavement or in
the immediate shoulder. Adjacent to the
highway was the 20-foot-wide SCE&G
gas line easement, and a good portion of
the remainder of the space was occupied
by high-voltage transmission lines and
poles, with strict minimum separation
requirements. Three corridors remained
as suitable space: 15 feet of open space
along the tree line, the 20-30 feet of space
between the electric transmission lines
and the gas easement, and the narrow
roadway embankment. Figure 1 shows
the special constraints within the corridor.
Initially, it was determined that the true
distance across Four Holes Swamp would
be approximately 8,500 linear feet (LF)
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from dry ground to dry ground. Since
US Army Corps of Engineers embraces
horizontal directional drilling (HDD) as a
preferred trenchless method for crossing
wetlands, HDD was proposed as the
primary method for trenchless installation
for crossing the Four Holes Swamp.
When most people think of HDD,
they think of the typical situation
depicted in Figure 2, a compact piece
of equipment requiring little working
room or staging area that can
directionally drill a pipe a thousand feet
down the road. Since this type of buried
telephone and fiber optic installation is
very common in our neighborhoods,
this usually becomes the frame of
reference for the space requirements,
equipment sizing, capability and lack of
public nuisance, and disturbance related
to HDD. If only it were that simple! So
began the design challenge.
Using minimum 100-foot radius-perinch diameter and a minimum depth of
50 feet to reduce the risk of frac-out, the
alignment was set with plenty of space
to set up the rig on the north side with
ample space along the power line right
of way on the south side of the swamp
for stringing out the pipe for pullback.
Using ASTM F1962 (Standard Guide
for Maxi-Horizontal Directional Drilling
for Placement of Polyethylene Pipe) and
ASCE Manual of Practice No. 108 as
design guidelines, it was determined
that the following parameters could
be anticipated for a High Density
Polyethylene (HDPE) pipe crossing of
this magnitude.
Figure 2: A typical mini-HDD rig.
Figure 3: HDD rig staging area.
HDD DESIGN CALCULATED
PARAMETERS
Entry/Exit Angle
10 degrees
Material
DR9 HDPE PE4710
Total Length
8,500 LF
Pull Strength
423,000 lbs
Tensile Stress
2,388 psi
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79
Figure 4: Design of HDD staging area.
Figure 5: HDPE pipe after pullback.
80
This information was calculated using
a spreadsheet containing the ASTM
F1962 design formulas and also using
commercially licensed HDD design
software. The maximum allowable shortterm and maximum tensile strength for
HDPE is approximately 1100 psi and
3500 psi, respectively. This pull would
have exceeded the short-term allowable
strength. In addition, the design guidelines
generally recommend a safety factor of
at least 2.0. In this case, the safety factor
for maximum tensile strength is 1.46. It
was determined that one single, long HDD
would not be possible and would have
a high risk of failure if it were attempted.
What initially seemed like a great plan on
paper proved unacceptable in reality.
The other crossing options that were
considered included:
1. Install ductile iron ball joint pipe and
drag across the swamp, open cutting
via barge.
2. HDD the entire length using a 20”
diameter steel pipe as a casing pipe.
3. Install one or more temporary ‘islands’
in the swamp and use these as a drill
points to reduce the distance drilled
and associated pull loads.
4. Install the pipe in the shoulder of
Highway 453 and HDD the three creek
channels at the bridges.
Throughout this process, Hazen and
Sawyer consulted with utility contractors
to receive feedback as to constructability
and general cost considerations of
these options.
Options 1 through 3 were determined
to be non-viable due to high cost or
permanent environmental impact.
Option 4 was by no means ‘easy’ to
design or construct, but proved the
most beneficial to the budgeted funding,
environment, property owners, and
Corps wetlands permitting authorities.
This option required continuous traffic
control along Highway 453 during
open-cut construction. In order to install
the pipe at the horizontal directional
drilling (HDD) locations and avoid the gas
line right-of-way on the west side, it was
determined that temporary fill areas would
be required for staging the HDD rig, pit, and
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mud recycler. The horizontal distance of the
longest HDD was reduced from 8,500 LF
to 1,134 LF with an anticipated pull of
approximately 25,000 lbs. This not only
reduced the size of the equipment but the
footprint required. Each HDD staging area
(seen in Figures 3 and 4) was designed
to be 150 feet long by 20 feet wide with
1:1 sloped areas enveloped by silt fencing
for erosion control. Sediment booms were
placed across the channels at the bridges
to further reduce the risk of sediment
entering the swamp. A vertical radius of
1,600 feet for the 16” diameter DR9 DIPS
High Density Polyethylene (HDPE) pipe
was designed at each location to keep
the anticipated pull loading required as
low as possible.
The three HDD crossings measured
2,762 linear feet (LF) total and the HDD
subcontractor indicated they had no
issues with the installation or pullback remarkable considering there was less
than 15 feet of space for the pipe to be
drilled between the bridge abutments
and the edge of the gas line easement.
As shown in Figure 5, the water main
was installed successfully within this
narrow corridor.
Overall, the Harleyville Water
Transmission Line project and the Lake
Marion Regional Water System (LMRWS)
expansion can be considered a success
and will provide over 2 million gallons
per day to Dorchester County, Berkeley
County, and a new Volvo manufacturing
facility. Also, the Trenchless method,
Horizontal Directional Drilling (HDD),
turned out to be the best method for
crossing Four Holes Swamp, even if the
design had to be changed from its original
conception and scaled down.
As consultants, we have an
opportunity to both listen to and inform
our clients and the regulatory authorities
using our expertise on the practical
application of trenchless methods when
applied to a specific project. It is our role
to ensure the correct application for a
crossing is designed and constructible;
and it is important as engineers that we
educate and inform our clients about the
limitations of new technologies as they are
developed and implemented in the water
and wastewater industry.
This project was designed by Hazen
and Sawyer and constructed by RubyCollins, Smyrna GA with HDD crossings
performed by Gator Boring, Pensacola
FL. The project was bid and administered
by the US Army Corps of Engineers
Charleston office for Santee Cooper and
the Lake Marion Regional Water Agency.
ABOUT THE AUTHOR
Andrew S. Vane, PE, a graduate of
Clemson University with 23 years of
experience, is an Associate with Hazen
and Sawyer in Charlotte, NC. He has
overseen design and construction of all
30+ miles of water mains of the Lake
Marion Regional Water System.
@ Cellular, Web-Based Monitoring System
@ Alarm/Event Notifications via SMS and or E-Mail
@ Continuous 24/7 Monitoring /Diagnostics
@ No Dedicated Computers or Software Required
@ System Design Based on 30 + Years of Experience
@ Pump Station / Elevated Tank Monitoring
SIMPLIFIED
CLOUD BASED REMOTE
SCADA MONITORING
@ 14 Digital Inputs
@ 2 Analog Inputs
@ 4 Relay Outputs
FROM THE LEADERS IN SCADA
For More Information Contact
Lord & Company, Inc. | 803-802-0060 | [email protected] | www.lordandcompany.com
Click Here
www.ncsafewater.org
81
North Carolina Takes
the Lead in Water Main and
Force Main Pipe Bursting
By Gary Shepherd, Regional Manager, Underground Solutions
INTRODUCTION
In 2008, a roundtable discussion occurred
at the offices of the Fayetteville Public
Works Commission that involved various
representatives from municipalities, material
supply companies, and consulting firms.
The topic was pressure pipe bursting, in
particular for the rehabilitation of water
distribution pipe. Presentations were
offered, municipalities described their
needs, and a solid exchange of information
made the meeting a success. One
attendee, Robbie Bald, water resources
engineer with the City of Greensboro, took
particular note of the benefits of using water
pipe bursting for older, undersized cast iron
mains. A year later, the first major effort in
North Carolina to rehabilitate pressure pipe
through pipe bursting was launched.
Since that time, no fewer than seven
communities have utilized this trenchless
technology to their advantage. They are
Greensboro, Monroe, Charlotte, Ramseur,
Roanoke Rapids, Reidsville, and Wilmington.
In total, at least 90,000 linear feet of pressure
pipe have been replaced by bursting, with
some 20,000 feet more slated for 2015.
PROCUREMENT AND CONTRACTING
Pipe bursting pressure pipe lends
itself to several methods of design and
procurement. Greensboro had been
rehabilitating gravity sewer lines through an
annual contract with a local contractor, so
the city simply expanded that include to its
water lines. The contract renews annually
with periodic open bids for qualified
contractors. Reidsville Utility Director Kevin
Eason chose to follow the same path as
Greensboro and actually used the same
contractor. Charlotte Water also used its
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annual contract for procurement. Monroe,
on the other hand, chose to self-perform
the work, since the city already had crews
capable of installing PVC water mains.
The challenge for Russ Colbath, water
resources director with the City of Monroe,
was to develop the program for in-house
equipment purchase, material selection,
and training of crews; then, to sell that to
the Council as a sound, economic, longterm investment.
The other three municipalities—
Roanoke Rapids Sanitary District, Cape
Fear Public Utility Authority (CFPUA) and
the Town of Ramseur—chose the familiar
design-bid-build method to procure the
contractor and complete the work. All the
methods were successful.
WHAT IS PRESSURE
PIPE BURSTING?
Pressure pipe bursting is not sewer bursting
with pneumatic equipment. That process,
while fine for manhole entry and retrieval,
does not fare well when used for water pipe
bursting. One reason is that commonly
used product pipe, such as Fusible PVC®
pipe or ductile iron pipe, does not lend
itself to the severe impacts created by
pneumatic equipment. Also, pneumatic
tooling requires hoses (feeding air and
oil to the hammer) that may contaminate
the product pipe, causing future bacterial
testing problems. For these reasons, static
equipment is typically used.
The basic steps followed for water pipe
bursting are:
1. Set up a temporary bypass line in the
streets where the pipe will be burst.
This is commonly 2-inch Yelomine PVC
with locking couplings. Once disinfected,
the services are transferred to the
temporary line. Meters may be
connected, but it is not required.
2. Pits are dug for the machine location
and pipe entry, and services are
disconnected at the main.
3. Steel rods of quick/disconnect joints are
fed through the host pipe into the pipe
entry pipe. The distance typically burst is
300 feet to 700 feet, although much longer
distances are possible. Up to 1,700 feet of
pipe have been burst in Greensboro.
4. Tooling, consisting of cutting blades
and an expander head, is connected to
the rods. Product pipe is brought into
place and also connected to the tooling
for pullback.
5. The machine reverses direction and pulls
the tooling into the host pipe, splitting
and expanding the burst pipe into the
surrounding soil. The annular space thus
created allows the product pipe to follow
the tooling back into the receiving pit.
Pullback can take from less than an hour
to a couple of hours.
6. After pressure testing and disinfection,
the services are tapped into the new
main and the flow transferred to the
newly installed water main.
Static equipment is clean, which helps keep
pipes clean. Also, it uses brute hydraulic
force easily obtained from a power pack
on the surface, which is transferred to
a compact bursting machine in a small
excavation. As shown in Figure 1,
the basic setup includes a pulling pit where
the machine is braced, a pipe entry pit
at the proper slope to accommodate the
product pipe, and rods threaded through
the host pipe. These rods are attached to
the tooling shown in Photo 1.
Click Here
BENEFITS OF PRESSURE
PIPE BURSTING
Each of the end users listed previously
in this article enjoyed a slightly different
mix of benefits, but the common threads
were cost savings, minimizing disruptions,
and reducing the time needed to install
new pipe through direct bury. In cases
such as CFPUA’s Northeast Interceptor
Rehabilitation in Wilmington, there was
simply no room in the right of way to accept
another 20-inch force main. Replacing
pipe in the same trench, although possible,
certainly would have created major traffic
disruptions and lengthened the construction
time and cost considerably.
Figure 1: Static pipe bursting setup.
Photo 1: Tooling cuts and bursts host pipe.
PRODUCT PIPE
In general, a restrained pipe is necessary
for bursting a water main or force main.
Jointed and gasketed pipe such as
restrained joint ductile iron pipe (RJDIP)
and spline and groove PVC have been
used. More common in North Carolina is
butt fused polyvinyl chloride pipe made in
conformance with AWWA C-900 and C-905.
Of the 90,000 feet installed in North Carolina
to date, most has been the butt fused PVC.
The main advantage of a fused pipe is
the uniform outside diameter, which has a
standard DIP dimension. Also, connections
and tapping can occur in the same fashion
typical for bell and spigot PVC water pipe.
Municipal maintenance crews are generally
quite familiar with PVC.
The typical requirement to bed pipe
when installing pipe in an open trench is not
possible, or necessary, for pipe bursting.
The external load is generally minimal due
to arching. In addition, the pipe utilized has
high stiffness. Thus, any concerns about
over deflecting or over stressing the product
pipe are misplaced.
Photo 2: In Wilmington – Back end of TT Technologies 1900G with rod removal during pullback.
THEIR STORIES
Greensboro began its pipe bursting pilot
program in 2009, when the city burst 4-inch
and 12-inch cast iron pipe, replacing it with
6-inch Fusible PVC® pipe and 12-inch ductile
iron, respectively. KRG Utility has performed
all the pipe bursting in Greensboro, most of
which has been 4-inch and 6-inch upsized
to 6-inch and 8-inch Fusible PVC® pipe and
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www.ncsafewater.org
83
Photo 3: In Greensboro, long side and short side services tapped at same pit location.
Photo 4: In Monroe – Pipe attached to expander head, in turn attached to cutting wheel tooling.
Photo 5: In Roanoke Rapids, 6” DR18 Fusible PVC® pipe entering pit for pullback.
84
totaling around 50,000 feet. Greensboro’s
Bald continues to budget for water pipe
bursting, saying, “From a social impact the
bursting process is much less disruptive
and much quicker to install. With ongoing
in-situ replacement, we also have the luxury
of being very flexible in where we burst and
can respond to our needs much quicker than
[with] design-bid build-methods.”
The Reidsville story really piggybacks
on Greensboro. Eason was familiar with the
success of the Greensboro program and
saw some areas in his city that required
similar rehabilitation. “Due to the cost of the
proposed work being within the range for
informal construction contracts, Reidsville
was able to utilize Greensboro’s contractor,
KRG, who agreed to perform the Reidsville
work using Greensboro’s unit prices for
bursting 6-inch and 8-inch cast iron and
replacing with the same size Fusible
PVC® pipe. The first phase is complete and
the second is under way,” said Eason.
Charlotte Water had an existing contract
with Dallas One Construction & Development
to upgrade water mains through dig and
replace. In 2011, the utility directed Dallas One
to replace an existing 3-inch cast iron main by
bursting and pulling in a 6-inch Fusible PVC®
pipe. The upsize was completed without
incident under and adjacent to a sidewalk and
specimen trees with cover of 3 feet or less.
The City of Monroe began investigating
the pipe bursting method of renewal in 2012,
and began its 10-year program in 2014, using
city crews exclusively. Following the lead of
Colorado-based Consolidated Mutual Water
Company, which was the first major utility to
pipe burst with its own staff, Monroe publicly
bid and awarded the equipment contract to
TT Technologies. TT and Consolidated helped
train Monroe’s crews, and in that year, Monroe
successfully replaced almost 10,000 feet
of 6-inch and 8-inch pipe size on size with
Fusible PVC® pipe. The city’s plan, according
to Colbath, is to replace 16,000 feet of aging
cast iron and galvanized steel water mains
each year for 10 years, predominantly using
the pipe bursting method.
The Town of Ramseur took a slightly
different approach. When it needed a
trenchless solution to replace some
roughly 2,000 feet of 12-inch water main,
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the officials asked The Wooten Company
for assistance in evaluating the options.
Wooten recommended pipe bursting with
either Fusible PVC® pipe or RJDIP, and the
town chose RJDIP due to its maintenance
crews’ familiarity with the product. John Grey,
project manager with The Wooten Company,
designed the project and commented on its
success: “The project cost was reduced by
an estimated 10% due to using trenchless
replacement. The largest expense that was
avoided was flowable fill that was required
by the NCDOT for the open excavations.”
Roanoke Rapids Sanitary District took a
traditional path to its project. Hazen & Sawyer
was familiar with the Greensboro work and
suggested that the District might be better
served to go trenchless rather than face
the extra time and disruption of direct bury.
At the time, permitting efforts required by
NCDENR included a full review and approval
from the Public Water Supply Section, but
now the regulatory agency considers pipebursting size on size to be maintenance
and no longer requires a permit. Once bid,
Portland Utility Construction Company of
Portland, Tennessee performed the work
between July and December 2014. Included
were 10,000 feet of 6-inch replacement with
Fusible PVC® pipe, plus numerous valves,
fittings, and hydrants. At the time of this
writing, a second phase was scheduled to
start in late summer of 2015.
The only departure from the story lies
with CFPUA. The Northeast Interceptor
project finished early this year was a pipe
burst of a 20-inch ductile iron force main
that had corroded and leaked in certain high
points due to hydrogen sulfide generation
and subsequent sulfuric acid production.
Having tried pressure cured-in-place pipe
(CIPP) in 2008, CFPUA chose to pipe burst
with 20-inch Fusible PVC® pipe and 24-inch
HDPE pipe, each having a nominal 20-inch
inside diameter. The project length of more
than 5,000 feet makes this trenchless
project a first of its kind, due to the large
diameter, long length, and the fact that the
host pipe was ductile iron pipe. Kimley-Horn
& Associates designed the project and
State Utility of Monroe was the contractor.
The team consisted of KRG Utility for the
pipe bursting and Underground Solutions
Click Here
of Poway, California for the 20-inch DR18
Fusible PVC® pipe and fusion services.
The project went smoothly, with State
Utility turning the project over to CFPUA
in only five months. Craig Wilson, project
manager for CFPUA, stated, “With narrow
rights of way and other utilities adjacent
to the Northeast Interceptor, a trenchless
solution was the most economical and
least invasive project approach.”
CONCLUSION
Although pipe bursting is a familiar term
to most in the water industry, we tend
to associate it with gravity sewers and
pneumatic equipment. These days, though,
the process most on the rise is pressure
pipe bursting with static equipment. When
it comes to pipe bursting, North Carolina is
well ahead of many other states in the United
States. For that, we can be proud, and the
ratepayers and residents can be happy.
View a pipe bursting video online at
https://youtu.be/JTBUwykj09M
ACKNOWLEDGEMENTS
Thanks to the following participants in the
projects described in this article, and to
those who reviewed this article:
Robbie Bald, Water Resources Engineer
– City of Greensboro
Kevin Eason, Public Works Director
– City of Reidsville
Russ Colbath, Water Resources Director
– City of Monroe
Craig Wilson, Project Manager
– Cape Fear Public Utility Authority
Chris Ford, Project Manager
– Highfill Infrastructure Engineering, PC
(formerly with Kimley-Horn & Associates)
Jeff Wing, Project Manager
– Kimley-Horn & Associates
Todd Davis, Project Manager
– Hazen & Sawyer
Michael Woodcock, Managing Member
– Portland Utility Construction
Dan Brown, CEO
– Roanoke Rapids Sanitary District
John Grey, Project Manager
– The Wooten Company
Brian Hunter, Regional Manager
– TT Technologies
ABOUT THE AUTHOR:
Gary Shepherd is a civil engineer
with extensive utility sales and
engineering experience in the eastern
United States. As a part of the
Underground Solutions team, he is
responsible for trenchless technology
activities involving Fusible PVC™ pipe
in Virginia and the Carolinas.
www.ncsafewater.org
85
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With decades of experience in
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solutions that help bring clean
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1111 Burma Drive
Apex, NC 27539
919-367-2000
www.crowdercc.com
Sustainability Feature
An Overview of Thermal Hydrolysis
North America’s Hot New Biosolids Technology
By J. Brenan Buckley, P.E., BCEE, Brown and Caldwell
E
ven if you’ve not attended WEFTEC
or a specialty biosolids conference
in the past few years, you are
probably aware of the hottest trend
in biosolids management – thermal
hydrolysis. A potentially game-changing
process from Norway, thermal hydrolysis
yields a high-quality biosolids final
product while also improving digester
performance and reusable digester gas
production. Its North American debut
was made to much acclaim at the world’s
largest facility of its kind, DC Water’s 370
million gallons per day (mgd) Blue Plains
Advanced Wastewater Treatment Plant
(AWTP). But what you may not know is
that thermal hydrolysis isn’t just for large
plants – it is a scalable process that offers
multiple benefits and is currently being
considered for implementation at facilities
across the United States, some as small
as 10 mgd. As thermal hydrolysis starts
to reach critical mass in North America,
this article provides a primer for owners,
operators, and maintenance professionals
on the origin, operating theory, and key
design considerations to determine if
thermal hydrolysis is a good fit for your
wastewater treatment facility.
What is Thermal Hydrolysis?
Hydrolysis is the initial phase of the
complex, multi-step process of digestion.
In conventional anaerobic digestion,
hydrolysis is generally accepted as
the process’ rate-limiting step. In the
hydrolysis process, external forces lyse
or destroy the walls of bacteria cells.
By accelerating hydrolysis, wastewater
solids can be degraded more rapidly
and more thoroughly, generating more
digester gas and fewer solids for
disposal. Various chemical, biological,
and mechanical processes can be used
to aid hydrolysis. Thermal hydrolysis is
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of particular interest to the wastewater
industry because it can result in adequate
pathogen destruction to meet disposal
regulations. In thermal hydrolysis, this
is accomplished with a two-stage
process in which high temperatures and
pressures (generally on the order of 150
to 170 degrees Celsius and 80 to 100
psig, respectively) are used to achieve
this cell destruction, releasing and
solubilizing particulate organic material
from bacteria and also further breaking
down carbohydrates and long-chain fatty
acids so they are more readily digestible.
Thermal hydrolysis also significantly
reduces the viscosity of the hydrolyzed
solids, allowing significantly higher
solids concentrations to be fed to the
downstream digesters and reducing the
mixing energy required for digestion.
Typical Thermal Hydrolysis
Systems and Configurations
Thermal hydrolysis processes
are currently available in both
sequential batch and continuous flow
configurations, with the vast majority
of existing and planned installations
being of the sequential batch variety.
Sequential batch systems manufactured
by Cambi and Veolia - Cambi THP and
Biothelys TM, shown in Figures 1 and 2,
respectively – typically include the
same general components. Stainless
steel pressure vessel reactors allow for
heating and pressurizing the solids with
live steam and hold the mixture to meet
the time and temperature thresholds
required for cell lysis and pathogen
destruction. After 20 to 30 minutes,
the reactor is emptied and some of the
FIGURE 1: Cambi’s Thermal Hydrolysis Process B6-3 Mark II system, installed at Thames Water’s
Crawley Sewage Works in West Sussex, south of London, UK. The Mark II system represents
the latest generation of the thermal hydrolysis process that Cambi will market in the United
States. Completed in 2014, Crawley is a regional biosolids processing facility rated for 58 dry
tons per day. Three reactor vessels are installed at Crawley.
(photo by: Brenan Buckley, Brown and Caldwell)
www.ncsafewater.org
87
steam is recycled to preheat incoming
solids. Depending on the manufacturer, the
reactor may be exposed to a violent flash
depressurization to move the solids to a
holding tank; some research has indicated
that this rapid depressurization aids in
hydrolysis and viscosity reduction, both of
which have advantages in digester sizing
as noted above. Hydrolyzed solids are then
diluted with water, cooled to mesophilic
temperature ranges, and then fed to
the anaerobic digesters. It is preferable
to set and forget the feed rates of both
the thermal hydrolysis and digesters for
optimal performance.
A continuous flow configuration
that mixes solids and live steam in a
piping system reactor at a controlled
feed rate is also available from Kruger,
Inc. Although most installed to date are
pilot or demonstration-scale systems
or temporary installations, one full-scale
system having a biological treatment
capacity of approximately 65 mgd is in
operation in Lille, France. In the continuous
flow process –known as Exelys ™ - solids
and live steam are introduced into the
reactor and mixed with a dynamic mixer.
Reactor volume and throughput determine
if retention time requirements are met,
while probes determine compliance with
temperature requirements. As with the
sequential batch process, the hydrolyzed
sludge is then diluted, cooled, and fed
to the digesters. In some instances, the
continuous flow configuration is installed
with digestion upstream and downstream
of the thermal hydrolysis to increase gas
production and solids reduction.
Why Consider Thermal Hydrolysis?
The benefits of using thermal hydrolysis in
advance of anaerobic digestion, particularly
on waste activated sludge (WAS),
include greatly reduced digester volume
requirements and capital costs, increased
biogas production, and the generation
of a reduced quantity of pathogen-free,
low odor, readily-dewaterable final cake
suitable for land application. These distinct
advantages drove the development of a
commercially-viable thermal hydrolysis
process in Norway in the 1990s, where
land for both plant expansions and
88
disposal were at a premium or unavailable
and there was a growing desire to
reduce energy demand and greenhouse
gas emissions. Similar conditions saw
the technology expand and mature into
other portions of Europe in the 2000s.
In particular, many private water companies
in the United Kingdom, including Thames
Water, United Utilities, and Yorkshire Water,
have implemented thermal hydrolysis
systems. In those cases, thermal hydrolysis
has been a key factor in allowing the
regionalization of biosolids processing at
facilities where available digester capacity
could be optimized, leading to increased
efficiencies and economies of scale. There
are currently sixteen thermal hydrolysis
units in operation in the United Kingdom.
Thermal Hydrolysis in the
United States
Similar project drivers are at work in the
United States. Key project drivers for DC
Water included significant space limitations
at the Blue Plains AWTP, a desire to
reduce the cost and environmental
impacts for the energy demand related
to disposal of biosolids, and the need
for a more marketable biosolids product
available for reuse to diverse outlets. At
Blue Plains AWTP, DC Water was able to
leverage the benefit of the higher solids
throughput afforded by thermal hydrolysis
to optimize the sizing of four new 3.8
million gallon anaerobic digesters to meet
site constraints, reducing construction
and long-term operating costs. Enhanced
biogas production from Blue Plains’ new
digesters will feed a combined heatand-power facility that provides steam to
the thermal hydrolysis process train and
is expected to generate approximately
13 megawatts of electricity, reducing
operating costs. Just as important, the final
product will be a pathogen-free final cake,
having in excess of 30% dry solids that
meets US EPA 40 CFR Part 503 rules for a
Class A biosolids product and allows for a
wide range of land disposal options.
The San Francisco Public Utilities
Commission is in the early stages
of a thermal hydrolysis and digester
improvement project at their Southeast
Water Pollution Control Plant. The 57 mgd
facility that was constructed in the 1950s,
manages 80% of the city’s biosolids,
and is now surrounded with adjacent
development, limiting expansion options.
Many of the project drivers for DC Water
are also applicable to the San Francisco
project, particularly site constraints and a
desire for a range of final product disposal
options. The Hampton Roads Sanitation
District in Virginia, the Trinity River Authority
near Dallas, Texas, and the City of Franklin,
Tennessee are all in various stages of
thermal hydrolysis implementation projects.
Closer to home, the City of Raleigh
is currently in the preliminary design phase
of a new biosolids campus for the
75 mgd Neuse River Resource Recovery
Facility. The Raleigh project will include
pre-dewatering and screening; thermal
hydrolysis; new anaerobic digesters;
a fats, oil, and grease (FOG) receiving
station; sidestream treatment to address
high nutrient loadings from the new
recycle streams; and a digester gas
reuse solution. The gas reuse solution is
expected to include some combination of
steam generation to support the thermal
hydrolysis process and either power
generation or a biogas-derived alternative
vehicle fuels processing, storage, and
transport facility that could fuel the city’s
bus fleet. Key project drivers for Raleigh
include the substantial energy savings
and greenhouse gas emission reductions
that would be gained from mothballing
their existing energy-intensive aerobic
digesters, reduced construction costs for
thermal hydrolysis-fed anaerobic digesters
(optimized to take advantage of the
beneficial properties of hydrolyzed solids),
and a desire to convert their existing
combination Class A and Class B land
application program to a dedicated Class A
program with multiple disposal pathways.
Raleigh’s new bioenergy recovery program,
being developed through a collaborative
consulting partnership led by Brown
and Caldwell and Hazen and Sawyer
with support from Black and Veatch, is
expected to be operational by 2019.
Key Design Considerations
Thermal hydrolysis implementation projects
are complex endeavors that will influence
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the operation and performance of many
processes at your wastewater treatment
facility. A thermal hydrolysis process
becomes the heart of your facility and
its planned operation will dictate design
conditions and the performance of both
upstream and downstream processes.
It will also require the development and
mastery of new skills by your operators
and maintenance professionals. Key
design considerations such as those
identified below can be case-specific
and should be evaluated carefully by
your operations and maintenance team,
engineering consultants, and thermal
hydrolysis vendor.
Sludge Screening – Grit screening to
remove particles less than 5 millimeters
(mm) is recommended by most vendors,
in part due to the additional wear that grit
under high pressures will place on system
components including pipes, elbows,
pressure vessels, pump stators, and other
elements subject to wear. Screening also
reduces the potential for grit accumulation
in anaerobic digesters, which can require
significant downtime to clean and is not
a pleasant task. Further, screening to
remove objectionable materials from
your high-quality final biosolids product
– such as plastics, hair, and other
filamentous materials – assures that the
product will meet customer expectations.
Be prepared for additional sludge
screening – your existing headworks
screens may not be adequate.
Feedstock Preparation – Thermal
hydrolysis systems prefer a steady-state
feed rate that requires some sludge
storage upstream to attenuate the
variable loadings typical in a wastewater
treatment facility. Thermal hydrolysis and
your digesters will be continuously fed 24
hours per day, 365 days a year, with one
exception as noted below. Feedstock is
generally fed to the thermal hydrolysis
system in the 15 to 20% solids range,
and frequent field measurements are
needed to determine this concentration
for the appropriate addition of dilution
water or even primary solids to meet
this target. FOG can also be added to
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FIGURE 2: Veolia’s Biothelys Thermal Hydrolysis Process, installed at Thames Water’s Oxford
Sewage Works near the Town of Oxford, UK. Oxford is also a regional biosolids processing facility
rated for 60 dry tons per day. The plant is currently being operated by both Thames Water and
Veolia staff prior to final acceptance. Three paired reactors, for a total of six, are installed at Oxford.
(photo by: Michele Kline, Veolia/Kruger)
the thermal hydrolysis system to boost
digester gas production, but it must be
pre-screened and pre-heated and is
typically added downstream of the sludge
storage noted above.
Thermal Hydrolysis Maintenance
and Annual Inspections – The thermal
hydrolysis reactors are pressure vessels
that require annual inspections and
certifications much like industrial steam
boilers. The inspection of the highpressure reactors must be performed by
qualified staff or a third party possessing
certifications recognized by the National
Board of Boiler and Pressure Vessel
Inspectors and commissioned by the
North Carolina Department of Labor. Each
pressure vessel must be taken offline to
complete the inspection and any repairs.
Depending on system configuration, this
means that your thermal hydrolysis system
could be offline for as much as a week or
more if repairs are needed. Your operations
team and engineer will need to consider
provisions for storing or diverting sludge to
another outlet while the thermal hydrolysis
system is offline. Because pathogen
destruction occurs with thermal hydrolysis,
sludge that has not been hydrolyzed
cannot be introduced into the digesters or
points downstream without contaminating
the system.
Digestion and Digester Temperature
Control – Hydrolyzed sludge leaves
the thermal hydrolysis process at a
temperature significantly higher than the
target temperature for optimal mesophilic
anaerobic digestion. Heat exchangers are
included in the thermal hydrolysis package
to provide adequate cooling, often
using treated plant effluent as a source
of cooling water. The volume of water
required for the heat exchange to work
properly is often substantial and can tax
other plant process demands for recycled
effluent. Cooled hydrolyzed sludge can
lead to pumping and piping problems,
especially if hydrolyzed sludge is allowed
to sit in pipes for extended durations
measured in hours, not days. Provisions
are included in the design to drain sludge
from post-process lines in the event of a
www.ncsafewater.org
89
shutdown or failure, and the systems are
placed in close proximity to the digesters
to limit pumping challenges. Heat from
the heat exchangers can be recovered
or dissipated to the atmosphere, plant
effluent, or other locations.
Thermal Hydrolysis Location – In
addition to being in close proximity to the
digesters, the thermal hydrolysis process
will typically be located outside, exposed to
the elements, for most installations in the
United States. Units in the United Kingdom
are also generally located outside, as are
the sludge hoppers that normalize feed
rates. Odors generated by the thermal
hydrolysis process are pungent, but they
are normally collected and routed to the
digesters and exposure to the atmosphere
is rare. There are situations where foul
gas may be discharged from the system,
such as when performing maintenance
on the pressure vessels or in the event of
an unplanned shutdown and emptying of
the process piping. The sequential batch
process, particularly those with flash
depressurizations, can be noisy when
operating – and they operate continuously.
For these reasons, siting should consider
proximity to neighbors and noise
abatement techniques, such as noise
walls, where necessary.
Dewatering Recycle Characteristics
– High ammonia concentrations can be
expected in recycle streams from the
thermal hydrolysis and anaerobic digestion
process. The actual concentration will be
a function of the feedstock, particularly
the WAS characteristics and WAS mass
percentage. At wastewater treatment
facilities having or expecting low nitrogen
limits, treatment of the recycle stream
may be required. This will be particularly
important if the facility is intended as
a regional biosolids processing facility
accepting sludge from other facilities or
communities. hermal hydrolysis processes
can also introduce additional recalcitrant
dissolved organic nitrogen (r-DON) into the
recycle stream. In addition to increasing
the nitrogen load, r-DON can provide
a tea-coloration to the recycle stream
effluent. his may impact UV system
performance if used at the facility for
disinfection. When the recycle stream is
blended with plant effluent for discharge,
this coloration is typically not noticeable.
Conclusion
Thermal hydrolysis is rapidly becoming an
established, viable method for achieving
biosolids management efficiencies in the
United States, just as it has in parts of
Europe since the mid-1990s. At least five
additional thermal hydrolysis systems,
in addition to the system installed at DC
Water’s Blue Plains AWTF, are currently
in various stages of design and will be
operational in the next five to seven years.
The installation of thermal hydrolysis
at wastewater treatment facilities with
existing anaerobic digesters can allow
for system expansion with no additional
digester volume. It can also help mitigate
site constraints and increase digester gas
production available for beneficial use to
help reduce greenhouse gas emissions
and energy costs, all while producing a
high-quality Class A biosolids product
suitable for multiple disposal outlets.
Similar opportunities and advantages exist
to optimize the sizing of new biosolids
management facilities. The thermal
hydrolysis process has the potential to
impact many aspects of your wastewater
treatment facility. Careful coordination
and consideration by your operators,
maintenance professionals, engineers,
and thermal hydrolysis equipment
vendor is critical to the delivery of a
successful project.
About the Author
J. Brenan Buckley, P.E., BCEE is
Brown and Caldwell’s (BC’s) Raleigh
Office Manager and Project Manager
for BC’s portion of the City of Raleigh’s
Bioenergy Recovery Program, currently
under preliminary design for the Neuse
River Resource Recovery Facility. BC’s
responsibilities on the project include
pre-dewatering, sludge screening, thermal
hydrolysis, and anaerobic digestion.
90
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Right Data + Right Results + Right Now
COMING TOGETHER:
How One Guatemala Community
Invested in a Future with Water
By Water For People
In 1999 after Hurricane Mitch, Marta Lidia
Beteta Urizar of Guatemala was a 31-year
old mother who found her family homeless
from the storm’s devastation. Others in her
community of Santa Rosa Chujuyub lost
family and friends along with their homes.
With conviction, Doña Marta moved
her family to Chicorral in Santa Cruz del
Quiché for a fresh start. But the hardships
continued in their new town, as her family
struggled to make new friends and worked
to build a house on land of their own.
The town was also struggling. Chicorral
needed water. A cistern truck would deliver
water, but it was expensive and remote,
requiring women to walk 25 minutes each
way. It was dangerous to go alone, and
many became sick in the winter months
from long hours of being wet. Chicorral
needed change in a big way.
92
In 2013, residents were informed at a
community meeting that a new program
would soon bring access to water to each
of their homes. While there was residual
distrust because of previous project
failures, Marta and her community of
Chicorral knew they needed to try again.
So Chicorral did. The community
purchased land and, with the support of
Water For People, drilled a well, installed
an electric pump, and distributed a
network of pipes to bring the water to
each of the 200 families. They also held
training sessions to support long-term
maintenance and governance of the
system, hired a plumber, and added
household water meters to track usage
and assess fees equitably across the
community. “I did not miss a meeting,”
said Doña Marta. “I learned very much;
they taught us not to burn garbage but
to bury it, to keep everything clean, the
sink and our storage containers, and to
not waste water, and to boil the water we
consume to not get a sick stomach.”
All residents of Chicorral invested
in the development of securing safe
accessible water for the community.
They also contributed a great amount of
individual effort to construct the system.
The community of Chicorral is in charge
of their future. “We are now responsible
for the project,” said Doña Marta. “We pay
our tariffs and go to meetings so we can
be involved in everything that needs to be
done so the project will always function
well.” Water For People and the local
government simply provided some fire to
an engine that was already running.
Today, Doña Marta and the other
women in her community do not walk
for water; they have it in their homes
whenever they need it. While life has
thrown a few challenges her way,
each time Doña Marta has figured out
how to tackle them and create her
own success. Doña Marta, like all those
around her in Chicorral, is changing
the future for herself and for the benefit
of Everyone in their community and
the entire district of Santa Cruz del
Quiche, Forever.
UPDATE FROM THE WATER FOR
PEOPLE HEADQUARTERS
In Water For People headquarter staffing
news, CEO Ned Breslin left his post after
nine years. The organization shared the
following statement after his departure:
“We will miss the strength, passion, and
creativity that Ned Breslin brought to
Water For People and to the Everyone
Forever model. The enthusiasm for this
approach is clear within the sector,
and we’re seeing progress every day.
He created a legacy to be proud of
and we will honor him by continuing to
drive his vision – a world without water
poverty. We wish him well and know that
in his next role he will bring the same
kind of strong leadership and vision that
enabled Water For People to provide
safe and continuous access to water to
thousands of people in underdeveloped
areas across the globe.”
UPDATE FROM THE WATER FOR
PEOPLE COMMITTEE
Earlier this spring, the NC AWWA-WEA
Water For People Committee hosted
the 6th annual 5k in Charlotte and the
2nd annual 5k in Raleigh. The proceeds
from both races exceeded $10,000 and
the total number of registrants was more
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than 180. Congratulations to Chad Hearn
and Carmen Jarrell for winning the overall
men’s and women’s race in Charlotte, and
to Rob McHadry and Allison Reinert for
winning the overall men’s and women’s
race in Raleigh. The NC Water For People
Committee would like to thank all of
the sponsors and supporters for their
contributions and for making the events
this year the most successful Water For
People 5ks to date. The committee plans
to continue hosting the 5k races each
year to not only continue raising funds
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for Water For People, but to also spread
awareness of Water For People and its
mission for clean water and sanitation
around the world. The atmosphere at
both races was extremely positive and we
look forward to planning the events again
next year.
For more information or to volunteer
with the 5k planning committee for the
2016 Water For People 5ks, please contact
Keller Schnier ([email protected]),
Nick Dierkes ([email protected]), or
Lamya King ([email protected]).
Water For People is an international
nonprofit organization dedicated to
providing access to improved water
and sanitation systems and services in
developing countries. By working with local
governments, the private sector, and
partners, Water For People ensures that
everyone in a specific region has these
basic needs met forever. This innovative
approach reaches every family, every
school, and every clinic, catalyzing
transformative change for better health
and economic development to occur.
www.ncsafewater.org
93
MUNICIPAL GROUP
CAROLINAS DIVISION
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Control Panels
Electric Control Panels and Accessories
for the Water and Wastewater Industry
Off The Shelf Pumps
Engine Driven Portable Pumps
Sump Pumps and Suction Lift Pumps
Wastewater Pumps
Water and Wastewater Controls
High Horsepower Grinder Pumps
Non-clog Pumps up to 6” 48 HP
S.T.E.P. Replacement Pumps
Telemetry packages, Scada systems
Total control solutions for community
water and wastewater systems
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Phone
Fax
877-770-8277
317-789-8889
www.covalen.com
[email protected]
Endowment
Update
2015 Scholarship
Recipients
The NC Safe Water Endowment Program
(NCSWEP) continues to help produce a
sustained, educated and trained workforce
through the following primary activities:
• Providing annual scholarships to university
and community college students
• Providing educational awards for
teachers or programs that increase safe
water awareness
• Encouraging more students to consider
a career in a water profession through
promoting greater involvement in
schools by water professionals
• Promoting public safe water education
In the five years since NCSWEP’s inception,
the endowment has grown to more than
$389,000 pledged and nearly $341,000 in
investment value. In 2015, nine students
received awards totaling $12,500 to help
further their education, and two educators
received another $2,000 to help promote
environmental awareness. Nine of the
student scholarships are eligible for annual
renewal as long as the recipient continues
to satisfy the qualifying criteria. Learn more
about these award winners below.
For 2016, the NC AWWA-WEA Board of
Trustees has approved the award of $13,000
through the NCSWEP. Applications for the
2016 awards must be received by March 24,
2016 and the applications are now available
through the following website: http://www.
ncsafewater.org/?page=Scholarships
As we approach year-end, please
consider making a monetary gift to NCSWEP
that is meaningful to you. Making a donation
has gotten easier. It only takes a few minutes
to donate online at www.ncsafewater.org.
If every member of NC AWWA-WEA gave
$10 annually, we could endow a new $1,000
award or add $1,000 in value to an existing
award each year. For the price of two mocha
lattes or two burgers per year, our members
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can help to build a sustained water industry
work force. Can you think of a better
professional legacy? For more information,
or to obtain an award application, visit
our website or contact the Endowment
Committee chair, Carlos Norris,
Crowder Construction (919) 367-2000 or
[email protected].
Carol Bond Fund Community
College Scholarship
TEAL SADLER
Pamlico
Community College,
Environmental Science
$1,000
“I am deeply and genuinely
honored by the committee’s decision
to help support my efforts towards
[my chosen] career path… I am
committed to pursuing more education
to help me with my personal goal of
promoting environmental awareness in
my native Pamlico County. I am
passionate about helping others and
would love to motivate people to be more
conscious of the impact that we have on
the future of our planet. I am proud to be
on this career path and this scholarship is
a blessing to me.”
Carol Bond Fund/Lynn & Lars Balck
Water Environment Stewardship Fund/
Rivers & Associates Clean Water
Education Fund
HALEY BRINKLEY
NC State University,
Environmental Engineering
$2,000
“… I have always loved
visiting the lake, ocean,
and playing in the creek. As I grew older,
I began to realize that the sources of
my enjoyment were constantly being
threatened by different pollutants. I am
thoroughly excited about discovering new
ways to preserve our natural resources.
When I entered college, I knew that I
wanted to study our environment, but I
also wanted to be involved in innovation
for the future. I am currently on track to
do both, in the Environmental Engineering
program at NC State University. With the
help of the NC AWWA-WEA, I look forward
to continue learning for many years.”
Environmental Manufacturer’s
Representative Scholarship Fund
ERIC POLLI
Environmental
Engineering and Spanish
$1,000
“Winning this scholarship
is a great opportunity for me to learn
more about environmental manufacturer’s
representative firms and the water industry.
I hope to explore how industry utilizes and
affects water and its reuse. My goal is to
gain knowledge of disasters dealing with
water due to my experience of seeing
petroleum pollution of the waters in
Ecuador. I hope to be able to research a
possible method of purifying water polluted
by environmental catastrophes.”
Frank & Susan Stephenson Water
Environmental Scholarship Fund
MEREDITH BULLARD
Civil Engineering
$1,000
“I am humbled by and
grateful to receive this
award for a second year. It allows me
to continue to pursue my degree in Civil
www.ncsafewater.org
95
Engineering at NC State. I am confident
that the engineering skills I will gain will
equip me to benefit society, protect and
improve the quality of the environment,
and meet a basic human need. I plan
to graduate with a degree in Civil
Engineering with a concentration in Water
Resources and want to use my degree
to make a difference both locally and
globally. I am thankful for the opportunities
that I have had so far to learn more about
this critical area, and I look forward to
continuing my education.”
Les & Elaine Hall Water
Environmental Stewardship Fund
CALEB BYNUM
Civil Engineering
$1,000
“I decided to pursue a
concentration in water
resources because of the vital role that
water plays in today’s society. I was
fortunate to be able to participate in
a summer internship with the City of
Gastonia. This internship has opened
my eyes to how versatile the field of
water resources can be and has shown
me its true importance. It can sometimes
be taken for granted that water will
always come out of your kitchen faucet.
However, I have been able to see what
it takes to make it happen and have
developed a new appreciation for
municipal water systems.”
NC Safewater Fund
ALLEN LEE DOWLER
Coastal Carolina
Community
College Graduate
University of
North Carolina
– Wilmington, Marine Biology
$1,500
“I embrace an enormous passion for
studying Marine Biology. This topic of
interest originated in my early years as
I sat on the dock of my home. Spotting a
small school of brackish mud minnows,
I contemplated the purpose of a
minuscule fish in a vast ocean. A spark
was lit inside my soul that has directed
my lifelong goal of studying our
remarkable aquatic wildlife. My longterm goal of becoming a marine biology
conservationist is to educate, advocate,
96
and take action to ensure the future of
marine life everywhere. If more people
were aware of the effects of our decisions,
I believe the marine ecosystem would be
a more sustainable environment. If I am
to educate anyone, or help better our
environment as a whole, I must first obtain
a complete understanding of all subjects
surrounding conservation.”
Raftelis Financial Consultants
Environmental Finance and
Management Scholarship
MARIA TCHAMKINA
Duke University, Nicholas
School of the Environment,
Master of Environmental
Management
$1,000
Concentrating in Water Resources
Management, Ms. Tchamkina intends to
pursue a career in water planning, specifically
in managing the risk that climate change
poses to water supply. She is honored
to receive this year’s Raftelis Financial
Consultants Environmental Finance and
Management Scholarship Fund award
from NC AWWA-WEA. This scholarship,
besides providing meaningful financial
support, recognizes the growing need for
management professionals – in addition to
engineering, science, and legal professionals
– to serve the water industry.
Maria returned to the academic setting
after nine years of work experience since
receiving her undergraduate degree from
Boston University. Prior to starting at Duke,
she enjoyed a career in the green building
industry, providing energy and water
efficiency services to affordable housing
in New York City. She hopes to use her
diverse background, experience in working
with private, non-profit, and government
entities, and interdisciplinary education to
help address the unprecedented water
resources challenges of the 21st century.
Raftelis Foundation Elementary
Education Scholarship
SHONNA GARRELL
Tabor City
Elementary School
$1,000
For six years, the science
teacher has worked diligently
to explain the effects of water pollution
on ecosystems and living organisms to
underprivileged children in a rural community
with limited financial resources. Thanks to
this grant, over 400 students will have
access to hands-on learning, using
microscopes and invertebrate kits to
assess human impact on water quality.
KEISHA LIPE
City of Asheville
$1,000
“Receiving the Raftelis
Foundation Elementary
Education Scholarship
is an honor. This will significantly help in
purchasing educational material to be
used with the City of Asheville, Stormwater
Services education outreach program. We
are sincerely committed to continue doing
our part in teaching children how they can
help in keeping our water safe and clean.”
Safewater Fund/
GHD Clean Water Fund
ZACHARY HOPKINS
NC State University
$2,000
“The awarding of this
scholarship means more
than I can describe. It
reminds me that others have faith in
my current and future plans to help
the environmental sector. I am further
encouraged by this award to make sure
I do everything in my power to help bring
knowledge of safe water to the public and
better educate the next generation on what
safe water truly means.”
LINDSAY MATTHY
University of North
Carolina – Charlotte,
Civil & Environmental
Engineering
$2,000
“Since I was young, I have had an interest
in water and the water treatment process.
It was a dream come true last year when
I was accepted into UNC Charlotte’s Civil/
Environmental Engineering graduate
program. This program is providing me with
the necessary resources to develop a career
in water resources engineering. Winning
this scholarship is exciting as it is helping
me to continue my research and studies in
the field of drinking water treatment. In the
future, I hope to help provide all people with
safe and reliable drinking water. I am very
much honored to be the recipient of the NC
Safewater Fund/GHD Clean Water Fund.”
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CERTIFICATION NOITACIFITREC
RENROC CORNER
MAINTENANCE TECHNOLOGIST QUESTIONS
Questions provided by the NC AWWA-WEA Operations & Maintenance Committee
1. If a water tank is filled with water to a height of 40 feet and the tank is 20 feet in diameter, what would be the
pressure at the base of the tank, in pounds per square inch (psi)?
a) 17.32
b) 62.4
c) 14.4
d) 19.25
2. The MCL for arsenic is
a) 0.05 mg/l
b) 0.003 mg/l
c) 0.10 mg/l
d) 0.002 mg/l
3. Fusible plugs on chlorine cylinders are designed to melt at
a) 180 degrees F
b) 100 degrees F
c) 135 degrees F
d) 158 degrees F
4. What is the chemical representation of the Langelier Index?
a) pH-pHs
b) pHs-log(Ca)
c) pHs-pH
d) log(Ca)-log(Alky)
5. A turbine pump set at a rate of 500 gpm is pumping water through a 6-inch pipe. How fast is the water traveling?
a) 0.168 fps
b) 5.68 fps
c) 28.3 fps
d) 4.78 fps
Answers:
1. a) 17.32
2. c) 0.10 mg/l
3. d) 158 degrees F
4. a) pH-pHs
5. b) 5.68 fps
WASTEWATER CERTIFICATION QUESTIONS
Questions provided by the NC AWWA-WEA Wastewater Board of Education and Examiners
1. What does the hydraulic jetter hose outer sheath color signify?
a) hose manufacture
b) type of liquid that is been transported
c) hose pressure rating d) the diameter of the hose
2. What does hydraulic jetter hose inner color signify?
a) hose manufacture
b) type of liquid that is been transported
c) hose pressure rating d) the diameter of the hose
3. When designing a public gravity sewer to convey wastewater. What is the minimum pipe diameter that can be used?
a) 6-inch
b) 4-inch
c) 8-inch
d) 12-inch
4. When performing a leakage test the leakage exfiltration or infiltration shall not exceed __________ gallons per inch of
pipe diameter per mile per day for any section of the system.
a) 50
b) 100
c) 10
d) 1000
5. New manhole construction the access diameter shall be at a minimum of _________.
a) 2 feet
b) 36 inches
c) 1.5 feet
d) 22 inches
Answers:
1. c) Wastewater Collection System by Michael Parcher Table 5.4.
2. a) Wastewater Collection System by Michael Parcher Table 5.3.
3. c) 15A NCAC 2T Regulations Min Design.
4. b) 15A NCAC 2T Regulations Min Design.
5. d) 15A NCAC 2T Regulations Min Design.
98
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WATER CERTIFICATION QUESTIONS
Questions provided by the NC AWWA-WEA Water Board of Education and Examiners
1. For an assembly to be approved, a backflow preventer must:
a) be inline testable and repairable
b) have OS&Y gate valves
c) be accessible
d) be visible
2. Meter sizes up to 1-inch usually have screw-type connections, whereas larger meters usually have ______ connections.
a) mechanical joint
b) flanged
c) coupling
d) yoke
3. Using a service clamp, when making a tap, eliminates the chance of the pipe ________________.
a) bending
b) splitting
c) straightening
d) clogging
4. SCADA subsystems consist of:
a) RTUs b) communications c) master station d) all of the above
Answers:
1. a) Source: Backflow Prevention Theory and Practice, 2nd Ed., Chapter 5, p. 83.
2. b) Source: AWWA, Principles & Practices of Water Supply Operations, Water Transmission & Distribution, 4th Ed., p. 250.
3. b) Source: AWWA, Principles & Practices of Water Supply Operations, Water Transmission & Distribution, 4th Ed., p. 421.
4. d) Source: AWWA, Principles & Practices of Water Supply Operations, Water Transmission & Distribution,4th Ed., p.235.
CERTIFICATION INFORMATION
If you have any questions regarding operator/engineering certification and exams, please contact the appropriate agency.
NC Board of Examiners for Engineers & Surveyors
919-791-2000
www.ncbels.org
Exam Date: October 30, 2015
Responsible for Professional Engineers and Professional Surveyors
NC Water Treatment Facility Operators Certification Board
919-707-9040
http://www.ncwater.org/pws/
Exam Date: 10/29/15
Responsible for Drinking Water Certifications
(Surface, Well, Distribution, & Backflow/Cross-Connection)
Water Pollution Control System Operators
Certification Commission
919-807-6353
http://portal.ncdenr.org/web/wq/admin/tacu
Exam Date: 12/10/15
Responsible for Wastewater Certifications
(Animal Waste, Biological WW, Physical/Chemical,
Land Application, Spray Irrigation, Collections,
Subsurface, and OIT)
THE WOOTEN COMPANY
Since 1936, we’ve provided quality
engineering, planning and
architectural services across North
Carolina. We want to be your infrastructure
and management team.
Raleigh | Greenville | Hickory | Asheboro | www.thewootencompany.com
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www.ncsafewater.org
99
The Operator’s Tailgate
This section of NC Currents serves as a forum for operations and maintenance workers to seek answers and solutions to problems and
challenges through the insights and experiences of fellow operations-maintenance professionals. Operations-maintenance workers at
all levels are encouraged to submit questions or respond to questions printed in this section. Questions and answers can be submitted
online at www.ncsafewater.org or emailed to Nicole Banks at [email protected]. Everyone who submits a question or an answer
will be entered into a drawing for a $50 gift card!
Question
Thank you to everyone who has participated and submitted
questions. The following question was submitted online and will
be answered in the Winter 2016 issue of NC Currents. We are
currently looking for your thoughts on the answer to this question.
What issues should be considered when selecting the best
chemical treatments for water?
Answer
Thank you to everyone who responded with answers to the
following questions. A summary of the responses will appear in the
Winter 2016 issue of NC Currents.
What are the advantages and disadvantages to the privatization of
a water or wastewater system?
What are some common distribution system pipe materials?
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100
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Fax (704) 333-9214
2115 Freedom Drive Post Office Box
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Welcome New Members!
The following people became members of NC AWWA-WEA in April, May, and June of 2015 by joining AWWA or WEF and choosing
NC as their home state or as an additional membership state, or by joining at the state level with a NC SLAM membership. We
welcome these professionals to NC AWWA-WEA and look forward to seeing them at future events and working with them on various
projects and committees.
For information on how to join, and the membership options available, please visit www.ncsafewater.org/?page=Membership.
Most of NC AWWA-WEA’s work is carried out through committees. To learn more about each committee review the list of active
committees at www.ncsafewater.org/?page=Committees. To express your interest in learning more about a committee, contact the
committee chair directly, contact the NC AWWA-WEA office, or complete the online volunteer form.
American Water Works Association
(AWWA)
Austin Alexander, Xylem, Inc.
Rachel Bean, Eno Scientific LLC
James Blake, Durham Department
of Water Management
Marianna Boucher, McKim & Creed
Michele Burton, City of Raleigh
David Cadman, City of Raleigh
Diane Cooper, City of Raleigh
Marla Dalton, City of Raleigh
John Dawson, Membrana
Henry Eudy, Charlotte Water
Jennifer Frost, Charlotte Water
Anthony Futrell, City of Jacksonville
Kori Garrett, City of Raleigh
Greg Hall, City of High Point
Leigh Ann Hammerbacher, City of Raleigh
Elizabeth Hollier, Mecklenburg County
Andy Honeycutt, Metersys
Eileen Johnstone
Gigi Karmous-Edwards, Fathom
Aubrey Lofton, Union County
Christian McGarrigle
Don McMullen, Jr., City of Goldsboro
Lori Montgomery, City of Durham
Jessey Newman, City of Raleigh
Gary Norris
Mike Orbon, Wake County
Environmental Services Department
Caroline Potter, Xylem
Greg Purcell, City of Reidsville
Barney Rogers, Edens Land Corp
Teal Sadler
Mike Swedick, Fortiline Water Works
Brandon Thomas, Edens Land Corp
Danny Thompson, Davidson Water Inc.
Marco Varela, CITI LLC
Dustin Wagner, State Utility Contractors
DNV GL (Organization Member)
Eno Scientific (Organization Member)
FacilityDude (Organization Member)
Town of Ayden (Organization Member)
102
Water Environment Federation (WEF)
Will Allen
Amy Aycock, Cape Fear Utility Authority
Lucas Cobb,
Garney Construction Company
Brent Detwiler, City of Hendersonville
Derek Edge, ARCADIS
Bradley Flynt, City of Greensboro
Lorenzo Halloway, City of Raleigh
Kent Harrell,
Cape Fear Public Utility Authority
Jimmy Holland, WK Dickson
Zachary Kemak
Corey King,
Kimley-Horn and Associates Inc.
Jason Lewandowski, O’Brien & Gere
Steve Macomber, Huber Technology Inc.
Jerry Pierce,
Brunswick County Public Utilities
Karen Ray, City of Raleigh
Henk-Jan van Ettekoven,
Huber Technology Inc.
Rosheil Walden
Joseph Wilson, Charlotte Water
Christopher Worthy, City of Raleigh
William Young
NC SLAM
Thomas Aldridge, City of Brevard
Jacob Allen, City of Burlington
Anthony Allman, City of Concord
Tyrone Alston, City of Raleigh
Brandon Anderson,
Union County Public Works
Christopher Avery, City of Goldsboro
Matthew Bailey,
Johnston County Public Utilities
Michael Brantley, Union County
Travis Butcher, Town of Elkin
Jerry Byerly, City of Statesville
Jacqueline Cantrell, City of Greensboro
Joshua Cholula, City of Raleigh
Michael Coats, Union County Public Works
Thaddeus Cohen,
Carolina Water Service Inc.
Perry Combes, PTcombes Inc.
Daniel Craig, Town of Cary
Timothy Cullum,
M.B. Kahn Construction Co.
Chase Dillard, Town of Boone
David Dovell
Ryan Enoch, Duke Energy Progress
Mark Essenmacher, City of Asheville
Jeffrey Ford, City of Asheville
Garrett Gilbert, City of Newton
Alan Grady, jr., City of Goldsboro
Jordan Greenlee, City of Albemarle
Christopher Hall, City of Brevard
Darrell Hobbs
Samuel Hollister, City of Asheville
Joshua Icard, City of Hickory
Matthew Kouns, City of Asheville
Paul Kuerbitz, City of Durham
Ryan Locklear
John Miller, Chemtrade
Jason Morris,
Northampton County Public Works
Michael Ping, Heyward Incorporated
Stephen Preul, KACE Environmental
Max Price, Union County Public Works
Matthew Reid, City of Burlington
Donald Roberts, City of Brevard
Courtney Sanders, City of Raleigh
Derrick Smith, Duke Energy Progress
Robert Smith, City of Monroe
James Stegall, Charlotte Water
Graham Strother, Town of Morehead City
Matthew Tuck, City of Burlington
Hiram Tuft
Dwight Tyndall, City of Goldsboro
Jerod Walker, City of Asheville
Joseph Webb, City of Winston-Salem
Howard Wilkins, Novozymes North America
Perry Wylie, City of Raleigh
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News and Notes
Public Education
Committee Activities
The NC AWWA-WEA Public Education
Committee (PEC) has been busy through
the spring and summer, with more activities
planned in the fall.
In May, committee members assisted
with the student poster contest in Durham
and Greensboro. Kindergarten through
eighth grade students created posters
related to this year’s topic, ‘Be a wise
water saver,’ and posters were judged with
prizes being awarded for first, second, and
third place in three age groups.
Kindergarten – 2nd Grade
1st place: Kiyahna Mills
2nd place: Gay Do
3rd place: Stesha Davis
3rd Grade – 5th Grade
1st place: Faith Hanson, Durham Academy
2nd place: Teddy Wallen, Durham Academy
3rd place: Omar Ramos Espinoza,
Holt Elementary Language
Academy - Durham
6th Grade – 8th Grade
1st place: Starr Matthews,
Voyager Academy - Durham
1st place:
Faith Hanson
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2nd place: Luke Cunningham,
3rd place: Bel Orinda,
PEC members also attended elementary,
middle, and high school science fairs
across the state and awarded prizes
at the regional and state levels for
projects related to water and the water
environment. From the projects reviewed
the PEC selected Vibha Puri from
the North Carolina School of Science
and Math for her project Enhanced
Biosorption of Hexavalent Chromium
in Monoionic Solution by Chemically
Treated Green Algae.
In October and November, the
committee will be hosting a Model Water
Tower competition in Charlotte and Raleigh.
New Mentoring Program
In 2014, the NC AWWA-WEA State
Board of Trustees, realizing the need
to identify and develop future leaders,
approved the formation of a task force to
develop a leadership/mentoring program
within NC AWWA-WEA. The goal of the
3rd place:
Omar Ramos Espinoza
1st place:
Starr Matthews
Leadership Development program is to
enhance member benefits, sustain strong
leadership of NC AWWA-WEA, and expand
networking opportunities for participants
through a structured program.
The program is focused on identifying
members who are already exhibiting
leadership potential through higher
levels of activity within NC AWWA-WEA,
such as being a current or past chair or
vice-chair (an officer) of a committee.
Mentees gain from this experience a
greater understanding of the history and
structure of NC AWWA-WEA leadership,
how the Board of Trustees operates and
makes decisions, and what it means to be
a leader in NC AWWA-WEA. Mentors are
all established leaders of NC AWWA-WEA
who have served on the Board of Trustees
at least once.
The first year of the program,
2014-2015, has been a pilot program
with a few hand-selected mentor-mentee
pairs to start the program. These first pairs
are the following (mentor name followed
by mentee name): TJ Lynch and Tony
Mencome, Barry Gullet and Tony Martin,
Crystal Broadbent and Derek Dussek,
2nd place:
Luke Cunningham
3rd place:
Bel Orinda
www.ncsafewater.org
105
News and Notes
Leslie Jones and Tom Bach, Robert
Walters and Courtney Driver, and John
McLaughlin and Nick Dierkes.
If you are interested in participating
in the Leadership Development Program,
more information is available at
www.ncsafewater.org.
NC WEA Award Winners
WEF Fair Distinguished Engineering
Educator Medal
NC AWWA-WEA is pleased to announce Dr.
Francis de los Reyes as the 2015 recipient
of the WEF Fair Distinguished Engineering
Educator Medal. This award “…recognizes
accomplishments in the education and
development of future engineers. Honors
Gordon Maskew Fair, a professor of
sanitary engineering at Harvard University,
[who] imparted to his students a desire for
environmental harmony and taught them
to use their engineering skills toward the
realization of that end. Dr. Fair’s insight into
the capabilities and limitations of the field
of sanitary engineering inspired research
and investigation into emerging areas
of concern. This medal commemorates
Dr. Fair’s contributions and likewise the
contributions of his fellow educators.”
(Award description from www.wef.org.)
Dr. de los Reyes is a Professor of
Civil, Construction, and Environmental
Engineering, Associate Faculty of
Microbiology, and Training Faculty
of Biotechnology at North Carolina
State University. He has developed an
outstanding and internationally recognized
program of basic research, technology
development, and training in wastewater
treatment, microbial ecology, and
sanitation in developing countries. He has
been active in teaching, research, and
extension service not only at the state and
national level, but has done internationally
recognized work in several countries.
Dr. de los Reyes is recognized as a
wastewater treatment expert and has
developed collaborative relationships
with utilities and municipalities throughout
North Carolina. He is an active member of
NC AWWA-WEA, serving annually since
2005 as an instructor for the NC AWWAWEA Biological Treatment Operators’
School, organizing several workshops on
microscopy, serving as speaker for the
Laboratory Technicians, and as an invited
speaker for specialty seminars, and NC
AWWA-WEA conferences.
WEF Gascoigne Wastewater
Treatment Plant Operational
Improvement Medal
Congratulations to Jackie Jarrell (Charlotte
Water), Darrell DeWitt (Charlotte Water)
and David L. Wagoner (CDM Smith) for
receiving the WEF Gascoigne Wastewater
Treatment Plant Operational Improvement
Medal for their paper Finding the Right
System Balance.
The nominated article describes a
potential solution to a problem experienced
at many operating wastewater facilities,
minimizing nocardia growth while maintaining
nitrification. Although the specific solution
may not be universally applicable, the
problem solving procedure used would be
cost effective and appropriate for application
at most Water Resource Recovery Facilities
(WRRF). The article details how the staff of
the Charlotte Water Mallard Creek WRRF
used a hands-on operations approach
to evaluate the issues of foaming and
nitrification performance using existing
plant data and installed instrumentation.
Analyzing past plant data during upset
periods identified needs for further data,
which were implemented using existing
instrumentation. The additional data were
then analyzed to develop operating theories
that would minimize nocardia growth while
still maintaining a nitrified plant effluent. The
operating theories were then implemented
in the full-scale facility to determine which
were viable. Viable instrumentation would be
needed, if any, to facilitate plant operating
procedures for the long term.
Condolences
NC AWWA-WEA member Coleman
Keeter passed away on July 20, 2015 at
Hospice of Wendover. Mr. Keeter was a
former City of Gastonia employee who
most recently served as the Executive
Director of the Water and Sewer Authority
of Cabarrus County.
Congratulations
Congratulations to LaVerene and Brandon
Garner on the birth of their daughter, Ellery
LaVerene Garner on April 2, 2015. Ellery
was 6 pounds 15.5 ounces and 21 inches
long at birth.
News from GHD…
GHD and CRA are now one!
The merger between GHD and Conestoga
Rovers & Associates (CRA) is complete! As
of July 1, 2015, they are operating as one
unified company under the name of GHD.
The merged business has 4,000 people
in North America and 8,500 globally –
meaning customers have access to their
engineering, environmental consulting, and
construction services around the world.
106
Click Here
News and Notes
GHD Welcomes Jason Marshall to
their Charlotte, NC office effective
May 18, 2015
Jason brings more than 15 years’
experience in water and wastewater
system planning, modeling, design and
construction in the Charlotte area.
Jason has extensive knowledge in linear
asset rehab, design and pumping systems.
Jason will focus on expanding our pipeline
and pumping design capabilities in the
Charlotte market while also helping deliver
a wide variety of other related projects
at GHD. Please contact Jason at jason.
[email protected] or (704) 342 4913.
Thomas Fitzgerald, PE
Promoted to Principal
Schnabel Engineering, Inc. is pleased to
announce the recent promotion of Thomas
Fitzgerald, PE, to Principal of the firm.
Tom is currently the Branch Leader of
the Greensboro, NC office of Schnabel
Engineering South, PC, where he manages
a team of over 25 engineers, geologists,
and CAD and GIS professionals doing dam
projects across the US and Alaska. Tom
brings more than 18 years of technical
and project management experience
in dam-related work, from inspections,
hydrology and hydraulics, design of new
dams, rehabilitation of existing dams,
spillways upgrades, instrumentation, and
risk assessments. His experience includes
work on all major dam types, from earthen
embankments, to concrete dams and
RCC. Tom is a Federal Energy Regulatory
Commission (FERC)-approved Independent
Consultant and FERC-approved Facilitator
for Potential Failure Mode Analyses, and
leads our efforts in tracking FERC’s recent
Risk-Informed Decision Making initiatives.
Tom holds a BS degree in Civil Engineering
and an MS degree in Water Resources
Engineering, both from Rutgers College of
Engineering, Piscataway, NJ. He is the Vice
President of the North Carolina Section of the
American Society of Civil Engineers (ASCE).
He is a licensed Professional Engineer in
Washington, Virginia, Oregon, Alaska, North
Carolina, New Jersey, Michigan, Kentucky,
and Pennsylvania. He can be reached at
[email protected].
About Schnabel
Schnabel, an employee-owned company,
is an ENR Top 250 engineering firm,
employing over 300 professionals in
18 nationwide locations. Schnabel
specializes in geotechnical, geostructural,
dam, and tunnel engineering, as well as
environmental, geosciences, construction
monitoring, and resident engineering
services. For more information, please visit
us at schnabel-eng.com.
© 2014 McKim & Creed, Inc.
Customers can still count on the same
project team members they already know
and trust to support their project needs.
The merger does not impact the approach
they use to service projects.
You can learn more about the merger
at www.ghd.com/cra or contact them
at [email protected] to learn about our
expanded team and new services.
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NC Currents Future Themes & Submission Deadlines
NC Currents is the official publication of NC AWWA-WEA. Members, individuals, and committees are encouraged to submit
content for the magazine. If you would like to submit an article to be considered for publication in NC Currents please complete the
Submission Form & Publication Agreement (available at www.ncsafewater.org) and email both the completed form and your article
to Nicole Banks at [email protected]. Articles must be received by 5:00pm EST on the listed submission deadline.
The editors of NC Currents welcome the submission of all articles related to the water and wastewater industry. Themes serve as
general guidance for each issue, but articles are not limited to an issue’s specific theme. Submission of an article does not guarantee
publication. The editorial committee will review and select all articles, and authors will be notified of the status of their submission.
WINTER 2016
How We Protect Your Water (Submission deadline October 5, 2015)
According to mywatermatters.org “…the value of water is immeasurable. It is a vital resource in every form of nourishment we need for
our bodies to survive and in every commodity we use…” Every person living in North Carolina benefits from clean safe water every day.
However, the general public may not be aware of the resources, technology, and professionals who protect their water, treat it to drinking
water standards, deliver it to homes and businesses, collect it after use, and treat it prior to returning it to the environment. This issue of
NC Currents will explore the many ways that water industry professionals protect the general public. Potential topics include:
• Protection of source waters,
• Water forecasting, management, and regional master planning,
• Advances in treatment technology,
• Best practices in storage, distribution, pumping, and collection,
• Improvements in water quality through monitoring
SPRING 2016
Water and Sewer Under Pressure (Submission deadline will be in early January 2016.)
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109
2015 Schedule of Events
The following schedule is current as of August 2015. For updates or more information, please contact the organization listed with
each event. If a listed event does not reference a specific organization, the item listed is a NC AWWA-WEA event. For further details
concerning all NC AWWA-WEA events, visit the NC AWWA-WEA website at www.ncsafewater.org or contact the NC AWWA-WEA
office directly at (919) 784-9030.
October
March 2016
1
Industrial Seminar (Tentative)
Location to be announced.
14-18
29
NCWTFOCB Exams (application deadline 30 days prior)
Kinston, Morganton, and Raleigh
NCWTFOCB (919) 707-9040
April 2016
17-19 Spring Conference
Asheville, NC
29
Growing Relationships & Opportunities
through Water Resources (GROW)
Wilmington
25-28
Eastern Maintenance Tech School
Raleigh, NC
25-29
Eastern Biological WW School
in Raleigh, NC
26-29
Physical Chemical WW School
Raleigh, NC
November
15-18
NC AWWA-WEA Annual Conference
Raleigh, NC
December
Coastal Collection/Distribution School
Morehead City, NC
June 2016
8
Construction Issues Seminar
Clemmons, NC
10
NCWPCSOCC Exams
Kenansville, Morganton, Raleigh, Salisbury, & Williamston
NCWPCSOCC (919) 807-6535
13-16
Western Maintenance Tech School
in Morganton, NC
13-17
Western Biological WW School
Morganton, NC
July 2016
11-15
PRECON TANKS
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Western Collection/Distribution School
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September 2016
12-16
Eastern Collection/Distribution School
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November 2016
13-16 Annual Conference
Raleigh, NC
Jacksonville, NC
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Advertiser Information Center
PAGE
PHONE
ACIPCO
COMPANY
103
205-325-7701
WEBSITE
www.american-usa.com
A.C. Schultes of Carolina
67
910-285-7465
www.acschultesnc.com
Alliance Consulting Engineers
109
704-527-4474
www.allianceCE.com
Analytical Services, Inc.
111
770-734-4200
www.asi-lab.com
Aqua-Pipe/Sanexen Environmental Services Inc.
77
800-263-7870
www.aqua-pipe.com
Bilfinger Water Technologies-Airvac
11
813-855-6297
www.water.bilfinger.com
Bio Green Services, Inc.
60
336-940-4544
www.biogreensvc.com
Bio Triad Environmental, Inc.
8
888-658-7423
www.BIOTRIAD.com
Black & Veatch
47
407-548-8561
www.bv.com
Brown and Caldwell
65
704-358-7204
www.brownandcaldwell.com
Carolina Management Team
16
828-648-7708
www.CMTcoatings.com
Carolina Pumpworks, LLC
97
843-522-9600
www.cpwllc.com
CB&I Constructors, Inc.
111
800-543-2938
www.cbi.com
CDM Smith
13
919-787-5620
www.cdmsmith.com
CH2M Hill
6
704-544-4040 or 919-875-4311
Charles R. Underwood, Inc.
50
800-729-2463
ClearWater, Inc.
Covalen
www.ch2m.com
www.crupumps.com
58-59
828-855-3182
94
877-770-8277
www.covalen.com
Crom Corp
57
352-372-3436
www.cromcorp.com
Crowder Construction
86
919-367-2000
www.crowdercc.com
Crumpler Plastic Pipe, Inc.
111
800-334-5071
www.cpp-pipe.com
Dewberry
29
703-289-4794
www.dewberry.com
Dixie Electro Mechanical Services Inc.
100
704-332-1116
www.dixieemsi.com
EMA Resources, Inc.
109
336-751-1441
www.emaresourcesinc.com
Engineered Pumps Inc.
2
800-528-4154
Evoqua Water Technologies
19
www.engineered-pump.com
www.evoqua.com
EW2 Environmental, Inc.
56
704-542-2444
www.ew2.net
Ferguson Waterworks
38
803-457-5718
www.ferguson.com/waterworks
Flygt - a Xylem brand
23
704-504-8804
www.xyleminc.com
Force Flow
90
800-893-6723
www.forceflow.com
Franklin Miller
20
800-932-0599
www.franklinmiller.com
Frazier Engineering
71
704-822-8444
Freese and Nichols
44
919-582-5850
www.freese.com
Garney Construction
101
407-877-5903
www.garney.com
Gavel & Dorn Engineering, PLLC
28
704-919-1900
www.gaveldorn.com
HACH
60
800-227-4224
www.hach.com
Hazen & Sawyer, P.C.
40
919-833-7152
www.hazenandsawyer.com
HDR
115
704-338-6700
www.hdrinc.com
3, 73, 91, 114
704-583-2305
www.heyward.net
30-31, 85
910-313-1516
www.hiepc.com
Hydro International Wastewater
15
866-615-8130
www.hydro-international.biz
J&S Valve, Inc.
116
281-324-3990
www.jandsvalve.com
4
800-879-6353
www.kemira.com
Heyward Incorporated
Highfill Infrastructure Engineering, P.C.
Kemira
Kimley-Horn and Associates, Inc.
110
888-542-4636
www.kimley-horn.com
Kusters Water
113
800-264-7005
www.kusterswater.com
LaBella Associates, P.C.
60
585-454-6110
www.labellapc.com
Lord & Company, Inc.
81
803-802-0060
www.lordandcompany.com
Martech Research
111
803-459-2427
www.martechresearch.com
McGill Associates
109
828-252-0575
McKim & Creed
107
704-841-2588
www.mckimcreed.com
Mechanical Equipment Co.
76
704-847-2100
www.mechequip.com
Medora Corporation (SolarBee and GridBee brands)
21
866-437-8076
www.medoraco.com
Neptune
72
281-794-3133
www.neptunetg.com
Oldcastle Precast
18
888-965-3227
www.oldcastleprecast.com/wastewater
Olympus Technologies, Inc.
32
541-689-5851
www.oti.cc
112
Click Here
Advertiser Information Center
COMPANY
PC Construction
PAGE
PHONE
46
919-661-9488
WEBSITE
www.pcconstruction.com
Pete Duty & Associates
52
704-573-2035
Pittsburg Tank & Tower
92
270-826-9000 x330
www.peteduty.com
Precon Tanks
110
352-332-1200
www.precontanks.com
Premier Water
63
704-907-5474
www.premierwater.com
www.watertank.com
RK&K
44
888-521-4455
www.rkk.com
Salmons Dredging Corporation
55
843-722-2921
www.salmonsdredging.com
Sanitaire - a Xylem brand
47
414-365-2200
www.xyleminc.com
Schnabel Engineering
14
336-274-9456
www.schnabel-eng.com
Shield Engineering, Inc.
4
800-395-5220
ShinMaywa (America), Ltd.
60
704-945-7112
www.shinmaywa.co.jp/america/
Smith & Loveless Inc.
12
800-898-9122
www.smithandloveless.com
Southern Environmental Systems
104
803-924-4323
www.southernenvironmentalsystems.com
SpectraShield Liner Systems
109
800-284-2030
Tencarva Municipal
103
336-665-0250
www.tencarva.com
The Perkinson Company, Inc.
106
800-833-7375
www.perkinsonusa.com
The Wooten Company
99
919-828-0531
www.thewootencompany.com
Total Piping Solutions, Inc.
25
716-372-0160
www.tps.us
Unifilt Corporation
26
800-223-2882
www.unifilt.com
Utility Land Service, LLC
109
803-730-6635
www.utilitylandservice.com
Valve Specialties, Inc.
69
704-455-5600
Vesconite Bearings
99
866-635-7596
www.vesconite.com
WC Equipment Sales, Inc.
43
678-730-0997
www.wcequipment.com
Willis Engineers
ZIMA325 (7x4.625)MRS-r4-final.pdf
WSG & Solutions, Inc.
1
64
5/18/15
108
1:37 PM
704-377-9844
267-638-3000
www.wsgandsolutions.com
C
M
Y
CM
MY
CY
CMY
K
Click Here
www.ncsafewater.org
113
Municipal Water and
Wastewater Process
360 Water, Inc.
Customized Online Training
JPS Industries, Inc. (†)
Diversion Baffles
Alfa Laval Inc.
Belt Filter Presses, Centrifuges, Heat Exchangers
JWC Environmental®
Muffin Monster ® Products and Headworks Systems
APG Neuros Inc.
High Speed Turbo Blowers
Krohne
Magmeters & Analytical Instrumentation
Aqua-Aerobic Systems, Inc. (†)
Filtration, SBR, Aeration, WW Plant Mixers
Layne / Verti-Line Pumps
Vertical Turbine Pumps, Mixed & Axial Flow Pumps
Aquionics, A Halma Company
In-line & Open Channel UV, PearlSense™ UV Transmittance
ASA Analytics
Chem Scan®
Marcab Company, Inc.
Odor & Digester Gas Scrubbers
Ashbrook Simon-Hartley, An Alfa Laval Company
Belt Presses, Gravity Belt Thickeners
Biowater Technology USA, LLC (†)
Moving Bed Biological Reactor, Integrated Fixed-Film
Activated Sludge, Continuous Flow Intermittent Cleaning
MR Systems, Inc.
SCADA, I&C Systems, Telemetry, Service, Surveillance Systems
Multisensor Systems
Online TTHM Analyzers & VOC Monitors
Nefco, Inc.
Weirs & Baffles, Density Current Baffle System, Launder Covers
Blue -White Industries, Inc.
Chemical Feed Pumps & Accessories
OpenChannelFlow
Flumes, Weirs, Metering Manholes
Blue InGreen®, LLC
Dissolved Oxygen Delivery Systems
Orica Watercare, Inc.
MIEX® Technology, Ion Exchange
Cerlic Environmental Controls, Inc.
Analytical Instrumentation, TSS, Sludge Blanket Analyzer
Ostara Technologies, Inc.
Nutrient Recovery Process
Continental Blower, LLC
Multi-stage Centrifugal Blowers
Parkson Corporation
W & WW Process Equipment, Hycor ® Products, Maxim OS
CST Covers
Temcor/Conservatek ® Aluminum Covers
Patterson Pump Company
W & WW Pumps, FloPak Package Pump Stations
EnviroMix, Inc.
Large Bubble Mixing
PEPCON SystemsTM
Odor Control & Hypochlorite Generation Systems
Evoqua Water Technologies LLC
WW Process Equipment, Envirex Products
Poly Processing Company
HDXLPE Tanks
Fluid Engineering
Strainers
ProMinent® Fluid Controls, Inc.
Chemical Feed Pumps, Systems, and Analyzers
Force Flow / Floquip
Chemical Scales
Red Zone® Robotics (†)
Sewer Pipeline Inspection - CCTV
GA Industries, LLC, A Rexnord Valve & Gate Group Company
Air, Check, Butterfly, Control, & Plug Valves
Robuschi USA Inc.
Positive Displacement Blowers
GE Water & Process Technologies
NF/RO/ZeeWeed® for W & WW Process Equipment
Rodney Hunt Company / Fontaine, A Rexnord Valve & Gate
Group Company
Gates & Valves
Groth Corporation®
Digester Gas Safety Equipment
Grundfos
Morris Non-Clog Sewage Pumps
HACH Company (†)
Collection System Flow Monitors & Services
Hayward Gordon
ANSI Process Pumps, Hard Metal Pumps, Mixers
Heyward Services
Custom Control Systems
InfoSense, Incorporated
Sewer Line Rapid Assessment (SL-RAT)
Integrity Municipal Systems
Chemical Feed Systems
Ishigaki USA, Ltd. (†)
Screw Pres ses
Jim Myers & Sons, Inc.
W & WW Process Equipment
Johnson Screens®, Inc.
Passive Intake Screens, Filter Underdrains
Rotork® Controls Inc.
K-tork, Jordan, Rotork Actuators
Seepex®, Inc.
Progressive Cavity Pumps
Stamford Scientific International, SSI
Diffused Aeration
Underground Solutions, Inc.
Fusible PVCTM
Unifilt Corporation
Filter Media & Installation
VAG, A Rexnord Valve & Gate Group Company
Double & Triple Offset Butterfly Valves, Slanted Tilting Disc
Check Valves, Knife Gate Valves, Sluice Gate Valves, Penstocks
Vapex Environmental Technologies, Inc.
Odor Control
WSG & Solutions, Inc.
Rex® Bar Screens & Grit Collectors
ZAPS Technologies
Online BOD, COD, TOC, E. Coli
2101-A Cambridge Beltway Dr. • Charlotte, NC 28273 • Phone: 704/583-2305 • Fax: 704/583-2900 •
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Trenchless Technology: Trenchless Technology: - NC AWWA-WEA

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