HomeMy WebLinkAbout1995-05-09 WSB AGENDA2 .
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AGENDA
ENGLEWOOD WATER AND SEWER BOARD
MAY 9, 1995
5:00 p.m.
CONFERENCE ROOM A
MINUTES OF THE MARCH 14, 1995
WATER AND SEWER BOARD MEETING. (ATT. 1)
GUEST: DAVID HILL -WATER ATTORNEY
RE: NEGOTIATIONS WITH DENVER & AMAX
~RRYMOOR SOUTH WATER & SANITATION DISTRICT
<(6NNECTOR'S AGREEMENT (ATT. 2)
INFORMATIONAL ITEMS: (ATT. 3)
A. ARTICLE FROM APRIL, 1995 OPERATIONS FORUM
lST PLACE PROBLEM SOLVING CONTEST AWARD
B. ARTICLE FROM APRIL, 1995 WATER/ENGINEERING &
MANAGEMENT -"WATER UTILITY SCADA USES
MICROWAVE COMMUNICATIONS"
C. PAPER FROM BILL McCORMICK -ALLEN FILTER
PLANT -"THE USE OF POTASSIUM PERMANGANATE
FOR MANGANESE CONTROL"
D. ARTICLE FROM WATER ENVIRONMENT FEDERATION -
"NEW CLEAN WATER ACT REAUTHORIZATION BILL
INTRODUCED"
OTHER.
WATER AND SEWER BOARD
MINUTES
MARCH 14, 1995
A TT. I
The meeting was called to order at 5:02 p.m.
Chairman Fullerton declared a quorum present.
Members present:
Members absent;
Also present:
Fullerton, Burns, Neumann,
Otis, Resley, Wiggins
Habenicht, Lay, Vobejda
Stewart Fonda, Director of
Utilities
John Bock, Mgr. Of Admin.
Dennis Stowe, Bi-City Mgr.
Al Vormitag , Eng. Councilman
1) MINUTES OF THE FEBRUARY 14, 1995 MEETING.
The Englewood Water and Sewer Board Minutes from the
February 14, 1995 meeting were approved as written.
Mr. Resley moved;
Ms. Neumann seconded:
Ayes:
Nays:
Members absent:
Motion carried.
To approve the February 14,
1995 Englewood Water and Sewer
Board Minutes as written.
Fullerton, Burns, Neumann,
Otis, Resley, Wiggins
None
Habenicht, Lay, Vobejda
Councilman Habenicht entered at 5:06 p.m.
2) THOMAS PLATING APPEAL.
The Board received a copy of the Notice of Permit Revocation
and Service Suspension for Thomas Plating and Mr. Thomas'
reply.
Mr. Thomas will appear at the April 11, 1995 Water and Sewer
Board meeting to appeal the notice served and subsequent
service suspension. Stu discussed the importance of fire
protection in this case. Stu noted that if Mr. Thomas
wishes to appeal the Water Board's decision, it would then
go to the District Court.
3. LETTER DATED 2-20-95 FROM CH. HILLS VILLAGE
RE: BUELL PROPERTY.
The Board received a copy of the letter from Bill Matsch,
President of Cherry Hills Village Sanitation District
acknowleging the lack sewer capacity within the existing
lines in relationship to the Buell property located at
Hampden and University.
4. LETTER TO MR. ROTUNDA AT 3003 W. MONMOUTH AVE.
The Board received a copy of the February 23, 1995 letter
sent to Mr. Rotunda denying the request to revert back to
flat rate water billing status. Mr. Bock noted that Mr.
Rotunda refused the offer of assistance.
5. SEWER LIEN FOR 2033 E. NICHOLS DR.
Stu reviewed a letter that was sent to the Englewood City
Attorney from Thomas Arckey of Archey & Reha, Attorneys.
The letter is dated February 24, 1995. Mr. Arckey has been
retained by Charles Thenell to contest a sewer tap
assessment placed against 2033 E. Nichols Drive by the City
of Englewood.
6. GUESTS: JOHN HENDRICKS & JOE BLAKE
CENTENNIAL WATER & SANITATION DISTRICT.
John Hendricks and Joe Blake of the Centennial Water and
Sanitation District appeared before the Board to discuss the
proposed settlement in which Centennial will reimburse
Englewood $71,000 for attorneys fees and costs incurred in
defending the Water Supply Amendment and Ranch Creek Lease.
Mr. Fullerton moved;
Mr. Otis seconded:
Ayes:
Nays:
Members absent:
Motion carried.
To recommend Council
approval of the proposed
settlement from Centennial
where Centennial will
reimburse Englewood
$71,000 for attorneys fees and
costs incurred. Mr. David
Hill will prepare the final
draft agreement for City
council.
Habenicht, Fullerton, Burns,
Neumann, Otis, Resley, Wiggins
None
Lay, Vobejda
7. GUEST: DENNIS STOWE, BI-CITY WASTEWATER PLANT
RE: PHASE IB PROJECT.
Dennis Stowe, Manager of the Bi-City Wastewater Treatment
Plant appeared with a slide presentation to outline the
proposed Phase IB Master Plan for the Bi-City Plant. Ms.
Habenicht wished to have her concerns regarding odors noted.
The Board recommended proceeding with Phase IB Master Plan.
Dennis noted that the project outline with also be presented
to the Littleton City Council.
Mr. Fullerton moved;
Ms. Habenicht seconded:
Ayes:
Nays:
Members absent:
Motion carried.
To recommend Council approval
of the Phase IB Master Plan
for the Bi-City Wastewater
Treatment Plant.
Habenicht, Fullerton, Burns,
Neumann, Otis, Resley, Wiggins
None
Lay, Vobejda
8. SOUTH ENGLEWOOD SANITATION DISTRICT.
Stu reviewed the circumstances of the dispute between South
Englewood Sanitation District and the Englewood Utilities
Department involving mai n tenance contract money withheld by
the South Englewood San i tation District. Dan Brotzman, City
Attorney, was present a n d reiterated that South Englewood
had breached the mainten ance agreement. The Board
recommended that Dan pro ceed in filing a petition against
South Englewood Sanitat i on District for $725 plus attorney's
fees. Ms. Habenicht not ed that Don Marturano and the South
Englewood Board were invited and chose not to appear.
Mayor Otis moved;
Ms. Habenicht seconded:
Ayes:
Nays:
Members absent:
Motion carried.
To direct the City Attorney to
file a petition against South
Englewood Sanitation District
for breach of the maintenance
agreement in the amount of
$725 plus attorney's fees.
Habenicht, Fullerton, Burns,
Neumann, Otis, Resley, Wiggins
None
Lay, Vobejda
9. EMERGENCY INTERCONNE CT AGREEMENT WITH DENVER.
A request was made by the Denver Water Department that the
original Emergency Interconnect Agreement be amended to
change the person notified in the case of an emergency to
the Department's Sales Ad ministrator. This was necessary
because effective May 1, 1 995, the position of Manager of
Customer Services will be vacated and will not be filled by
the Denver Water Department.
Mr. Otis moved;
Ms. Neumann seconded:
Ayes:
Nays:
Members absent:
Motion carried.
To recommend Council approval
of the Amendment to the
Emergency Interconnection
Agreement between the City and
County of Denver and the City
of Englewood.
Habenicht, Fullerton, Burns,
Neumann, Otis, Resley, Wiggins
None
Lay , Vobejda
10. SOUTHGATE SUPPLEMEN T #125.
A request was made by the Southgate Sanitation District
representing the owner/developer for inclusion into the
Southgate Sanitation Dist rict. Supplement #125 is for an
area approximately 4.7793 acres. The zon i ng is R-2.5 with
no zoning changes proposed. The site is currently vacant
with the intent to sell the two newly platted lots as two
single family home sites. The owner of the property is the
James F. Kelly Trust. The property is located at 6616 E.
Prentice Ave, which is east of s. Monaco Street and 1/4 mile
south of Belleview on the south side of E. Prentice Ave.
Mr. Otis moved;
Mayor Burns seconded:
Ayes:
Nays:
Members absent:
Motion carried.
To recommend Council approval
of Southgate Supplement #125.
Habenicht, Fullerton, Burns,
Neumann, Ot i s, Resley, Wiggins
None
Lay, Vobejda
The meeting adjourned at 6:45 p.m.
The next Water and Sewer Board meeting will be April 11,
1995 at 5:00 p.m. in Confer ence Room A.
Respectfully submitted ,
Cathy Burrage
Recording Secretary
DE NV ER
DE NV ER TECH CENTER
COLORAD O SPR INGS
ASPE N
BIU IN GS
BO IS E
CHEYENNE
JAC KSON
SALT LAK E CITY
WASHINGTON , D.C.
HOLLAND & HART
ATTORNEYS A T LAW
SUITE 2900
555 SEVENTE ENTH STREET
DENVER , CO LORADO 80202 -3979
MAILI NG ADDRE SS
P.O . BOX 8749
DENVER, COLORADO 80201 -8749
April 17, 1995
Englewood Utilities Department
Attn: Cathy Burrage
3400 South Elati
Englewood, Colorado 80110
ATT. 2.
TELEPHO NE (303) 295-8000
FAC SIMILE (303) 295 -826 1
1WX 9 10-93 1-0568
L YNN A. CLEVEI.A.'1 0
(30 3) 29 5-84 79
Re: Cherrymoor South Water & Sanitation District
Connector's Agreement
Sewer Contract No. 15
Dear Cathy:
This firm represents Cherrymoor South Water & Sanitation
District ("Cherrymoor"). Under a contractual arrangement,
Cherrymoor transmits sewage for Cherryvale Sanitation
District ("Cherryvale").
Cherrymoor and Cherryvale recently resolved a long-
standing dispute concerning fees to be paid under their
contractual sewage transmission arrangement, as described in
the enclosed "Second Amendment." While it is our opinion
that the City of Englewood's approval is not necessary for
this Amendment, which only affects the fees paid by
Cherryvale to Cherrymoor, we are forwarding the document to
you for the city's review and approval, if necessary.
If Englewood's approv al for this document is required,
we would appreciate your t aking whatever steps are necessary
to obtain such approva l and to have the three duplicate
originals enclosed executed. You may then keep one and
return two to me. On the other hand, if approval is not
required, please let me know, and return these original
documents to me.
HOLLAND & HART
A TIORNEYS AT LAW
Englewood Utilities Department
April 17, 1995
Page 2
Thank you very much for your assistance. Feel free to
call me at 295-8479 if you have any questions.
LAC:jat
Enclosures
Sincerely,
; J 11 (}_ ./J_ // ~~~-~ Lyn~ A. Cleveland ·
for HOLLAND & HART
cc: Mr. James P. Gordon, President, Cherrymoor
South Water and Sanitation District
4 37183.
SECOND AMENDMENT TO
CHERRYVALE-CHERRYMOOR
MAY 1, 1972, AGREE~
THIS AGREEMENT, made this~ day of ~ , 1995, by and
between Cherrymoor South Water and Sanitation District, hereinafter referred to as
"Cherrymoor", and Cherryvale Sanitation District, hereinafter referred to as
"Cherryvale",
WITNESS ETH:
WHEREAS, the parties hereto, on May 1, 1972, executed an agreement
pertaining to the connection of Cherryvale' s sewage transmission lines to
Cherrymoor' s transmission system and the use of Cherrymoor' s system, hereinafter
referred to as the May 1, 1972, Agreement, and
WHEREAS, the parties hereto, on December 31, 1976, executed an agreement
hereinafter referred to as the December 31, 1976, Amendments, which amended the
May 1, 1972, Agreement, and,
WHEREAS, the parties now desire to amend the May 1, 1972, Agreement and
the December 31, 1976, Amendments, and gain the approval of the City of Englewood,
if required.
NOW, THEREFORE, in consideration of the mutual covenants hereinafter
contained, Cherrymoor and Cherryvale agree as follows:
1. Cherrymoor has an outstanding balance due from Cherryvale as of
December 31, 1993, for Service Charge billings as stipulated in Paragraph 2 of Exhibit
"B" of the May 1, 1972, Agreement, as amended by the December 31, 1976,
Amendments, in the amount of $12,997.05, which amount is disputed by Cherryvale.
The parties have agreed to settle this dispute, and all past and present claims and
rights of all parties, through December 31, 1993, for the sum of $7,453.80, to be paid
upon execution of this Agreement.
2. The additional paragraph included in Paragraph 1 of Exhibit "B" to the
May 1, 1972, Agreement by the December 31, 1976, Amendments is hereby deleted in
it's entirety and replaced with the following:
The service charge of $1.00 per month per tap in use shall continue
through 1982. Thereafter, in lieu of the flat monthly Service Charge an annual
Service Charge for each tap served under this Agreement shall be made by the
Board of Directors of Cherrymoor to cover normal operation and maintenance
expenses of Cherrymoor lines through which Cherryvale sewage flows.
Commencing January 1, 1994, such Service Charge shall be seventy-five percent
(75%) of the annual Service Charge made within the boundaries of Cherrymoor.
Such Service Charge shall be billed to Cherryvale quarterly or otherwise as
Cherrymoor shall determine and shall be paid by Chen-yVale within thirty (30)
days of receipt of billing.
3. Per Paragraph 2 above, Cherrymoor has an outstanding balance due from
Cherryvale for the period January 1, 1994, through December 31, 1994, for Service
Charges in the amount of $2,673.00, ($3,564.00 x .75), such sum to be paid upon
execution of this Agreement.
4. Except as specifically provided for above, the terms of the May 1, 1972,
Agreement, as amended by the December 31, 1976, Amendments, shall remain in full
force and effect.
IN WITNESS WHEREOF, the parties hereto have caused their respective duly
authorized officers to execute this Agreement the day and year first above written.
CHERRYMOOR SOUTH WATER
AND SANITATION DISTRICT
CHERRYVALE SANITATION DISTRICT
ARAPAHOE COUNTY, COLORADO
B:zv~-
President
The foregoing Agreement is approved this _ day of _____ __, 1995.
ATTEST:
City Clerk
CITY OF ENGLEWOOD
By: ____________ ~
Mayor
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Operations Forum
Problem Solving Contest Awards
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first Place
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Meeting stringent effluent limits ..
for ammonia requires innovative tric~liiJg
filter and process adjustments
Operations Forum
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April 1995
S tringent ammonia effluent
limits imposed in 1993 left
the Littleton-Englewood
Wastewater Treatment Plant
in Englewood, Colo., searching for
ways to improve the performance of its
secondary treatment system. When ni-
trifying trickling filters (NTFs ) were se-
lected as the most cost-effective means
to reduce ammonia, however, operators
and managers at the 32-mgd plant dis-
covered that meeting the variable
monthly limits would require more than
just installing the new equipment and
following the design operation plan.
They embarked on a series of tests and
process adjustments that would result in
operating efficiency and consistent com-
pliance with the most stringent limits.
Ammonia removal in an NTF is
achieved through nitrifying bacteria
that feed on ammonia. Because these
bacteria cannot srore food , ammonia
must be applied consistently through-
out the day for the bacteria to become
established on the filters.
Two NTFs using plastic cross-flow
media were installed downstream of
the Littleton-Englewood secondary
darifiers and before final effluent disin-
fection. During the initial year of oper-
ation, however, the plant encountered
problems coordinating the existing
processes with the new filters, which
interfered with proper ammonia re-
moval. The plant's NTFs must treat
both the ammonia present in the un-
treated plant influent and the ammonia
in centrate from in-house dewatering
operations. The plant's natural influent
diurnal (24-hour ) flows and ammonia
loadings vary by more than 300%.
During low-flow, low-loading periods,
which last up to 6 hours, the nitrifying
bacteria in the upper portion of the
NTFs consume all available ammonia,
which prevents nitrifying organisms
from growing in the lower portion of
April 1995
the filter. When ammonia loadings in-
crease during the day, in excess of what
the upper organisms can consume, am-
monia passes through the lower por-
tion, which has not established a popu-
lation of nitrifying organisms, and then
passes untreated out of the filter.
This problem was addressed in the
design and operation plan by storing
and returning ammonia-rich anaerobic
solids dewatering centrate to the plant
during low-loading periods. Designers
conducted diurnal ammonia and cen-
trate return modeling studies to deter-
mine baseline (without centrate return )
ammonia loadings at the NTFs. This
information was used with design de-
tention time analysis to determine cen-
trate return requirements to fill the low-
loading periods and distribute the
ammonia load to the NTFs over 24 hrs.
Two low-loading periods were
found : from 2:00 to 7:00 a.m. and from
3:0 0 to 5:00 p.m. Because the earlier
and longer period could accept the
greatest centrate return load, operators
pumped centrate from the centrate stor-
age tank back to the plant headworks at
approximately 3:00 p.m. to arrive at the
NTF at 2:00 a.m. (based on design de-
tention time analysis). Pumping was
limited to the 5-hour low ammonia-
loading time. The second low-loading
period required a later stan time and a
shorter pumping duration .
The NTFs went on-line in September
1992. Within 3 weeks , some ammonia
reduction was achieved, and removal ef -
ficiency continued to improve as more
nitrifying bacteria became established in
the NTFs . Based on these initial results ,
operators expected performance to con-
tinue to improve and eventually meet the
permit limits. In June 1993, however, re-
moval efficiency stabilized at about 70 %
removal. This was insufficient tO meet
the most stringent permit requirements
in July, August, and September.
Operations Forum
To rc1 LT'L' th i ~ c·c i ur,c·. ti 1 ·o o pt:r J -
ti ons µo,iJ, 11 l'rl .. 'L't du rill ).! \\·ce k k
meer i11µ' .i 1rn m,c: ~'L111r 1n,11u µcrs . o per-
ations rcr,olllll'1. ,rnd pro je ct design
engineers: hem:r C(lordin,uion ot inrer-
re bred procC,~L'' ,1 11ci dl'tl'rlllin ;ltiOll of
::i more t'rrL .. .:ti1 L. ,·vrnr.ire rL'tll rn rime.
Con,i,tcrn .11111n<lni,1 loJdin µ 11 ·i th
cenrr;lt c rl'quirL·' cJrL·tul e<H>rdm,irion
1\·irh 111.i111 · <>thn pL1rn procL·.;sc s and
proµr;11m. inc I ud i 11).! thL · hio ,ol id s hen-
etic;.i J lbl' l'r< >µr.1rn. ,111.1l·roh 1c diges-
tion ,111d dl·11 ,Hnmµ ,chl'lluks . ,icri-
1·ar ed sludge ~'r<>ccss opcr,u ion, and
cenrr:Hc t,111k m,111,1µL'll1L"11t . r ore cas r-
inµ the' \ ( ilunll' nr so l1d' l'LllllrcJ da ily
ro thL· Jic:L"'tL·;·, ,rnd L·.;r.ihJ1,h111,.: 11·eekly
solid . dL'11 ·.irlTl!l~ ,chc·d uk, h.1scd on
rhc torL"l.:,1sr ''ere kc1 fe,Hurl'' nf the
m,u ;.1µ,·ml'11t rr• •.c:r.i 111. l :,ms the full
stor,1µl' CJJ'.lc1n or· rhc U:'lltr;Ht' rJnk ro
rerurn rh 1, 5-JJ \ Cl'IHLH L' r rnducrion
e1·enh-mer -J.i 1 s i. ciqxndcm on ac-
cur.HL' ,0 J1d;;, prcidu cri 1.i11 fort'c;1sring.
T ht· i'1·osr.1111 .iJ,n 11 ,1, dq,enden r
on rep1 LH dL ·11 :i tnill).! ;111d trans-
p orrin'.-'. nf h10~0!1cb from tilt' ~,J,rnr 5
d :11< .1 11·,·,-k . I f I -+P .llllll µ.ii .Hl' pro-
ducn1 L·,;,h <ii rill .; d.ih . J1lO.OOO
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Second Place (tiel
Keith H. Kroeger
Ohio Environmental
Protection Agency
Columbus, Ohio
Troubleshooting Treatment
Systems
Donald B. Aulenbach
Environmental Engineering
Consultant
Clifton Park, N.Y.
and
Robert Stein
Lake George (N.Y.) Village
Sewage Treatment Plant
Filter Fly Control
Third Place
Mickey J. Nowak
Springfield (Mass.) Regional
Wastewater Treatment Facility
Calibrating D oppler Meters
Honorable Mention
Douglas A. Pike
City of Jeannette (Pa.) Municipal
Authority
Donald A. Andrews
Pueblo (Colo.) Wastewater
Treatment Plant
.Mike Myers
Washington Environmental
Training Center
Auburn, Wash.
Jess W. Everett
and the University of Oklahoma
Civil Engineering Class of 1992
Norman, Okla.
trate tank each day of the 7-day
week to maintain equal loading
throughout the week.
The plant also had to maintain the
trickling filter-activated sludge process
to achieve final clarifier total sus-
pended solids of less than 20 mg/L and
biochemical oxygen demand of less
than 10 mg/L. Suspended solids con-
sisting largely of heterotrophic bacteria
are carried into the NTFs with the sec-
ondary process effluent. These het-
erotrophic organisms colonize the
NTF media and rapidly displace
slower-growing nitrifiers.
These steps improved even load-
ing of the NTis over 7 days. To de-
termine if a more appropriate cen-
tra te return time existed, however,
the team initiated a series of return
time adjustments and performance
tests. Because nitrifying organisms
have a slow growth rate, each return
time adjustment was followed by 1 ro
2 weeks of obserYation. Tests were
based initially on the modeling analy-
sis of filling the two low-loading peri-
ods. Diurnal ammonia studies also
were conducted with these tests. The
results indicated that the earlier and
longer low-loading period could ac-
cept more centrate return.
In addition, the tests indicated that
the centrate return for the second low-
loading period may have encroached
on the second high-loading period.
Based on these results, an additional
pump was installed to increase the
centrate return volume during the first
low-loading period, and pumping dur-
ing the second period was terminated.
Operators then initiated a single-pe-
riod return analysis and diurnal am-
monia analyses to determine the effec-
tiveness of the additional pump and
applied these results to the centrate re-
turn pumping plan. Some improve-
ment in ammonia removal perfor-
mance was realized (5%), but final
effluent ammonia concentrations were
still higher than permit requirements.
Another series of centrate return
Littleton-Englewood Nitrifying Trickling
16
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• Pl am effluent
Operations Forum
Filter Performance
Apri l 199 5
timing an d dura t ion tri a ls were con-
ducted with diurnal ammonia monitor-
ing studies, and cenrrare return pump
start rime s were adjusted up ro 2 hours
on either sid e of th e previous start rime.
Again, 1 ro 2 weeks of moniroring fo l-
lowed each ad justment. However, be-
cause neither the la rer no r the earlier
start rim e imp rO\·ed performance, the
results were inconclusive . Changes in
return duration also were in co nclu sive .
The te am disco\·ered that they
could n o r clearl:· derermine the actual
centrare am\·al time at t he NTis be-
cause of broadening and diluting of the
centrare as it passed through upstream
second ary process ranks. T he centrare
also wa s being masked lw background
amm oni3 conce11trarions . To eliminate
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these masking effects , operators con-
ducted a lith ium tracer study using an-
hydrous lithium chl oride. They intro-
duced a known concentration o.f the
lit hium solution at the inlet of the acti-
vated slu dge basins and analyzed grab
samples ro determine lithium concen-
trations at different points in the basin,
at the secondary clarifiers , and in NTF
influent at \'arying time intef\'als.
The study clearl y defined actual de-
tenti on times through the secondary
S\'Stem and actual a rrival at the NTFs.
The team then disc ove red that short
circuiting in the secondary system was
reduc ing the actual detention time by
more than 3 hours. As a result, cen-
rrare had been arriving at the NTF
more than 3 ho urs t oo soon . In addi-
tion, the secondary process was broad-
ening the return stream.
Based on these tests, the centrate re-
turn pump start time was set back to
7:00 p.m., and a higher output pump
was installed in the centrate tank to re-
turn more centrate in less time. Within
days, the performance of the NTFs im-
proved, and the most stringent permit
limits were soon met and surpassed.
Since this change more than a year ago,
the l\i'TFs have consistently met their
permit requirements.
Greg Fanner is operations supervisor
and Charles Caudill is process devel-
opment analyst at the Littleton-Engle-
wood Wastewater Treatment Plant in
.Englewood, Colo.
?vi & +
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Operations Forum 23
/ -----
CONTROL INSTRUMENTATION ATT. 3 B
Water Utility SCADA
Uses Microwave Communications t
A water distribution Supervisory
Control and Data Acquisition
System (SCADA) using small
programmable logic controllers
(PLCs) as remote terminal units
(RTUs), a redundant minicomputer
as host. and microwave data commu-
nications between the host and the
PLCs has been placed in service by
the Southeastern Oakland County
Water Auth o rity (SOCWA), Royal
Oak . Michigan . a Detroit suburb.
Developed by the c o nsulting
engineering firm of Black & Veatch
in Kansas CitY , and AEG Automation
Systems Corporati o n , of Pittsburgh ,
the realtime SCADA system replace s
an aging and failure-prone tone
system installed in 1961. The new
automation monitors and c o llects
data from seven pump/tank stations.
three metering stations , and a pres-
sure reducing unit. It provides
remote operator monitoring and
control of equipment in the stations ,
alerts the operator of alarm condi-
tions and generates reports .
The new SCADA system is assem-
bled from modular, off-the-shelf,
general-purpose hardware and soft-
ware , which proved to be an
economical approach . The system
can be upgraded easily to more
powerful and versatile hardware
and software modules as such prod-
ucts become aYailab le , and it is easi-
ly programmed and maintained by
SOCWA personnel.
The consulting firm provided
SCADA design , supervision , testing ,
and software configuration includ-
ing the host computer's graphics.
The engineers also
programmed the PLCs and
communi catio ns devices
and trained SOCW A opera-
tors in the use of the host
software . The manufacturer
supplied and installed the
hardware and software,
tuned the antennas , and
trained technicians and
maintenance personnel.
SOCWA is a 107 mgd
wholesale water distributor
which purchases treated
water from Detroit and
distributes it to IO communi-
ty utili t ies . The Authority
does no treatment except
chlorination as necessary . Its
distribution system has three
pressure gradients: 40, ;7,
and 60 psi , and covers eleva-
tions from 6;3 ft to 760 ft .
PLCs oner Cost
and Availabil ity Advantages
Serving as RTUs in 10
unmanned remote stations The SCADA system 's communication links rely on this
microwave antenna outside of the 14-Mile Road pumping station . are Modi con 984-130
28
Compact PLCs manufactured by
AEG Schneider Automation of North
Andover, Massachusetts. This model
provides sufficient memory for all
logic and data functions . An
eleventh RTU in the main pumping
station , which is manned 24 hours
and where the SCADA host is locat-
ed, is a slightly larger model in the
series of PLCs .
The PLCs are programmed in
ladder logic rather than · computer
code , which permits program
changes to be made more easily by
technicians. The entire SCADA
system has approximately 7;0
input/out points . Because of the
extensive logic capabilities of the
PLCs , safety interlocks were added
in situations where relay logic
formerly would have been prohibi-
tive . Logic was also added to delay
valve operation slightly and thereby
avoid reaction to transients.
As part of the new SCADA
project, instrumentation throughout
the system was replaced, including
pressure , temperature , level , and
flow sensors and transmitters, alarm
sensors , start/stop relays , and intru-
sion alarms . All analog signals are
now in the common 4-20 mA format .
Near-Microwave Communications
Radial communications , typically
referred to as multiple address
systems (MAS) radio , between the
PLCs and the host is by 5-watt Iow-
band microwave (928/952 Mhz)
units. The master radio at the main
plant is redundantly configured in
hot standby and has an omnidirec-
tional antenna atop a 110-ft high
elevated water tank . The 10 slaved
remote radios are not redundant and
have directional antennas . The
radios transmit using Modicon
Modbus serial protocol, which has
proven successful for FM,
microwave, and satellite communi-
WATER/Engineering & Management . APRIL 1995
J
Operator
Workstation
Remote PLC #1
984-130 Compact
0-llll--ff1 • Rad io
•
Report
Printer
Alarm /Event
Printer
Operator
Workstation
Engineering
Wo rkstation
B M8 5 Bridge /MUX ;
IEEE 802 .3 DECnet
(Thinwire )
Modbus 4 .8 Kbps Serial Links
Local PLC
984-140 Compact
• • ~___-z_-
Remote PLC #10
984-130 Compact
.tions in utility and pipeline
rvice . All PLC and radi o equip-
ent, and the host computer, are
tcked by uninterruptible power
:pp lies.
Prior to purchasing the radios , a
>mputerized path profile devel -
>ment study was performed to
:termine if the proposed radio
stem could theoretically commu-
cate between the remote and
ain sites without interference .
eld tests were then made using
·e equipment .
In addition to demonstrated
gher communications reliability
an the telephone-based tone
stem replaced , the radio system
:rmits the Authority to perform its
vn diagnostics. A hand-held
strument indicates whether a
jio path is w o rking , its frequen-
' etc . If a problem develops , tech-
:ians can replace a radio or PLC
)dule with a spare in about 4 5
mutes . In the past , hours were
5t in establishing whether a
mmunications problem was the
lit of SOCW A or the telephone
mpany .
\ TER/Engineering & Management . APRI L I 995
Redundant Minicomputers as Host
The host consists of redundant
Digital Equipment Corporation
(DEC ) MicroVAX 3100 Model 30
computers that serve two 19-in .
color terminals with printers in the
control room and an eng ineering
terminal in the chief operator's
office . As with the master radio ,
redundancy was selected for maxi-
mum. reliability .
Running in the two computers
are identical Unicell MP software
packages as the operator interfaces .
The packages provide end-user
configurable graphics , realtime and
historical trending of operating data,
recipe control , process optimiza-
tion , alarm supervisor/Jogger, sched-
uling , resource management, and
report generation .
AEG ASC wrote a special program
termed Redundant Systems Failover
Task , to permit the DEC computers
to operate in hot standby. The firm
also developed a linear scaling task
to convert raw data into engineering
units . Black & Veatch further modi-
fied the program to specifically
apply the computers to the SOCWA
SCADA System SChematic
water system . Included were radio
communications task coordination,
control valve operations, and report
generation . The host sends
commands and retrieves data from
the PLCs approximately every
second .
Cost Savings Seen
Specific advantages seen by
SOCW A since installation of the new
SCADA system include a substantial
savings in spare parts inventory, elim-
ination of overtime costs to repair fail-
ures in the old SCADA system,
improved monitoring and control by
operators, and elimination ·of the
clicking of the tone system.
For the future , SOCW A is looking
into adding 37 remote metering and
pressure monitoring locations . Each
location would probably be handled by
a PLC communicating over land lines
and polled by the host computer. •
This article was edited by WEM ·
staff.
For .,,., """'-"""' 1111 tilts ,,,,,.,, t:lrcll 872
., the radtlr ltlt'Vlt:6 r:ard.
29
THE U9E OF POTA991UM PERMANGANATE
FOR MANOANE9E CONTROL
ATT. 3 C
Hlatorioally, manganeae has been a problem In the Englewood water system wffh the
higheet conoerrlraflons during November through March. Prior to 1992, manganese
would enier the system with the only freatmenf being the pre-chlorinaflon. other
than oomplalnfa from the staining of fbdurea, the only problems aaaoolatad with
manganese was dirty water calla especially In the spring. For 88V81'81 years the -Offy
had employed a spring-time hydrant flushing program which alleviated fhe problem
for a short fime but was no long-term aoluffon. In December of 1992, fhe
manganese levels were higher than In the paat and were close to exoeedlng the
furbldffy standards. Wrih ireafed water turbidity readings in the .7 to .8 niu range
and rising, it was feared we would go over the afandard of 1.0 ntu. During thla fltne,
the filter furbidiflea were acceptable In fhe .16 to .26 niu range but the olearwell
showed much higher furblditles. As t he manganese was freafed by the pre-chlorine,
it began to oxidize. Thia oxidaflon process took much longer than necessary to
catch the manganese on the filters and ft continued to oxidize long after leaving the
~~ .
As the system approached the furbldity limit, ft was decided to attempt to treat the
manganese with pH control. Exiaflng chemical feed hnes were mod"nted to enable ua
to raise the pH prior to the pre-chlorinaflon. It was found that once a pH o( sf least
8.8 was achieved before the pre-chlorination, the manganese was rapidly oxidized
· and removed by the filters.
This proo~ worked well for two winter seasons and the spring hydrant flushing
showed the water cleared up much faster than in previous years. But large amounts
of caustic soda were necesaary to raise the pH to levels which allowed the
manganese to be rapidly oxidized. The high cost and the singular benef'it derived
from the pH adjusfmenf led to the investigation of using Potassium Permanganate in
the l"8W water. It was anticipated that by using permanganate more fhan one benefit
could be realized. Besides oontrolhng manganese, tastes and odors oould be
minimized and, more importantly, natural organic matfer could be corrlrolled. Total
Organic Carbon has been measured in the 4 to 7 mWJ range In fhe raw water. These
rn-ganio precursors reaot with chlorine io form irihalomethanea. During fhia period,
total frihalomafhane ooncentratfona were In the 80 to 70 umW'f range which ia below
the 98-fe Orinldng Water Aot standard o( 100 urnWJ. In the future thia afandard may
be lowered to aa little aa 40 wng/t Add ing permanganate to ihe raw watet rernovae
organic precursors and lowera the reacflon of chlorine forming frihalomefhanes. Thia
added benefit of using permanganate was V9"d attractive.
In late January of 1996, bench aoale testa were perfonned to determine fhe
permanganate demand and it was found that .8 mall waa the approximate dosage ·
required fo fr8at the problems. During the uae of oauafio soda for pH adjuatment,
raw water manganese was .160 mi"'. Manganese levels above .06 mi"' oaUM fhe
problems we W9f'9 experiencing. AJthough treated wafer readings were In the .04 to
.06 m&'J range, staining and dirty water atiff ooourred. Because of the higher than
nonnal chlorine dosage required before the filters, fitter aid polymer waa desfroged
and we were unable to use if to enhance the filfera' effecflveneu. Without fllfer aid,
filter turbidities were In the .2 to .3 niu range. Any filter turbidity OV8I' .1 niu la not
an effective barrier to the removal of gfardla and cryptoaporkfrum. Becauae .1 nfu or
lower ia such an eff'eoffve barrier, we afrive to attain this goal to protect the syafem
f'rom these waferbome contaminants.
Pennanganafe waa started at .8 mWf but lowered to .4 mg/1 because of fears of
overdosing. It waa decided to slowly Increase the doaage ea a aaf'eguard. The
dosage was increased over a period of seven days to .76 mW'f. With fhe low ffowa
during the winter, ff fook four days to see the effects of a dosage change. During
the first four days of pennanganate addition, causffo soda oonffnued to be fed to
treat any manganese in the system prior to the pennanganate. After four days of
permanganate feed, the caustic soda was shut off and the pre-chlorination reduced
which enabled us to start the filter aid polymer.
On the fourth day of the .76 mg/I permanganaie f'eed (02/09/96) the finished
waier turbidHy dropped to below .1 ntu and the manganese level was In the .02 to
.03 mg/I range. On 0!2/23/96 the pennanganaie was raised to .8 mg,11. Through
the end of March, finished water turbidities fluctuated from 1898 than .1 to .3 ntu.
This was atm1mted to algae in the plant 1"8881'VOir and not to manganese levels as the
finished water manganese range stayed befween .02 to .04 mg/I.
As mentioned before, the control of natural organic matter ts an attracflw beneflt of
using permanganate. About mid-February, total organic carbon samples were
analyzed. The reaufta of fhe analysea were disappointing b808use they showed a a
to 4 mg/1 range which was not much better than TOC analyses perfonned before fhe
use of permanganate. But on February 28 the quarterly total . trihalomethane
samples were collected. The results were very promlalng. They were almost half' the
ooncenfraflona (39 mg/I) which had been measured for 8-7 years.
Although Mure tesflng will be necessary to oonflnn the long-term benefits of
permanganate use, the eariy resutta are very encouraging.
Water Environment Federatio n
aatment Meets the Information Age
ence on Computer Automation
er
.t-
er
n-
er
1-
-a-
nt
:r,
:s.
er
r-
.t.
v-
e,
r-
:::r
e-
:h
1d
iy
y,
1-
J)
1S
1S
td
lS
1-
rs
)-
1-
~,. ... -,_-,...~~
"' ~· .. ' .,._,,.
~~ ~l q· .,., .
Min ne apo lis, Minn ., will host" Autom atin g to Improve Wat er Quality," a WEF ~pec i a lty conference
tak ing place June 25-28 . Ot her upcomin g conferen ces include "T ox ic Substanc es in Wate r
Env ironments ," May 14 -1 7, Cin cinna ti, Oh io, and "New and Eme rgin g Technol og ies and Products
for Wastewate r Treatment and Stor mwater Collec ti on ," June 4-7, Toro nto, Ca na da.
U.S. and the world. In 1991 , WEF held
a specialty conference on GIS that
attracted nearly 200 participants on
what was then an emerging field in
wastewater treatment .
"The wastewater industry has had a
difficult time embraci n g .iu to mation,
but we've come a long ,,·av ," accord-
ing to Sweeney . "Lar g e and small
communities are b e ginning to use
GIS to manage their co llection sys-
tems . They are com·erring maps to
digital files and adding permits and
other scanned documents . Many are
developing maintenance programs
using this information ."
The conference, whose attendees will
include managers, operators, techni-
cians, software developers , and users of
information, also features a tour of the
Empire Wastewater Treatment Plant
near Farmington , Minn ., which has a
distributed computer control system to
monitor instrumentation and control
pro cess equipment .
To qualif,· for reduced advance reg -
istration rates, f01ms and pa~ment must
be recei ved by May 26 . To obtain con-
ference informati o n and registration
forms , plus travel a.n d hotel information,
call WEF toll-free at 1(800 )666-0206
or 1(703 ) 684 -2452 . "-
~rtification for Environmental Professionals
n
I-
1-
te
tl
e
tl
p
professional with a mi.nimwn of five years
experience and a bac calaureate degree .
Until now, IPEP has been certifying only
senior professionals through a process of
oral exam.
"The QEP is the first and only cre-
dential of its kind ," say s Hunsaker. "It
emphasizes an awareness o f multi -media
interJctions J.nd adherence to a code of
_ .. L '.--TL ~ r"\r:'rt .... --: ... -: •.. -------:.
body of the credential J.nd is supported
by WEF, along with the Air & Waste
Management Association , the Ameri-
can Academy of Environmental
Engineers, the National Association of
Environmental Professionals, the State
& Territorial Air Pollution Program
Administrators, and the Association of
Local Air Pollution Control Officials.
A TT. 3 D
Volume 32 Number 4
New Clean Water Act
Reauthorization Bill
Introduced
House Trans-
porta tion and
Infrastructure
Committee
chairman Bu d
Shuster (R-Pa.),
along with seven
Republican and
seven Democrat-
ic committee
members, intro-
duced a com-
prehensive Clean
Water Act reau -
thorization bill
Februarv 15.
The Clean
Water Amend-
WE F Presiden t Michae l
R. Pollen discussed
Clean Water Act issues
with members of
Alaska 's congress iona l
delegation dur ing a
recen t visit to
Wa shington , D.C.
ments of 1995
(H .R 961 ), as described by Shuster upon
introduction, is meant to be a starting
point for debate and is expected to under-
go revision, with a new draft being
produced before the subcommittee
begins its process of amending and voting
on the measure, scheduled for late March .
The bill includes many of the same
provisions as last year's "bipartisan alter-
native," including voluntary nonpoint
source and watershed management pro-
grams, continued federal funding for the
State Revolving Loan Fund (SRF ), revi-
sions to the U.S. Environmental
Protection Agency (EPA) storm\vater
program, and encouragement of the ben-
eficial use ofbiosolids. Provisions dropped
from last year's proposal include s1te-spe-
cifi c grant funding; the acid mine
pollution control program; new anti-
degradation policy guidance; and
pollution prevention planning provisions.
Interestingly, the chairman of the
Water Resources and Environment Sub-
committee of the Transportation and
Infrastructure Committee, Sherwood
Boehlert (R-N.Y.), is not a cosponsor,
even though his subcommittee is cur-
continued on page 5
!r Named Highlights
M.
ect
ith
·&
nc .
m-
has
rhe
r ial
1rd
fur
nee
des
·ion
"EF
ind
rest
sho
Jni-
·rm
94.
sho
. ge-
ng,
She
: of
lam
. As
ind
ion
the
s.sis-
7er.
;m-
s he
worked on a newsletter patterned very
similar to Highlights, will serve her
well " said Doug Borgatti, WEF Pub-' . . . lications Committee chairman said.
"She has always been concerned about_
the water quality profession, has lots
of initiative and drive, and sets high
personal standards for herself and for
her work. She is well qualified to lead
the Board that will help ensure High-
lights meets the needs of the members
and the association ."
Like the Editorial Advisory Board
chairs for Water Environment & Tech-
nology, Operations Forum, Industrial
Wastewater and other WEF periodicals,
Hersho will have weekly contact with Bor-
gatti, the editors of Highlights, and the
other Editorial Advisory Board members.
After graduating from the University
of Texas at Austin with a civil engineer-
ing degree in 1982, Hersho went to work
for CDM's Austin, Texas office, where
she was devoted to general design with
an emphasis on stormwater control. Her
most recent work has shifted to waste-
water-related projects, focusing on
biosolids management and odor control
issues . She was a contributing author to
WEF's Beneficial Use Programs for
Biosolids Management, which was pub-
lished in 1994 .
Federation members interested in
serving on the Highlights Editorial
Advisorv Board should contact Hersho
at 1(6ll ) 621-2565 .'
on on Air Emissions
ater Environment
Federation
. Preserving & Enhancing
the Global 'lfflter Environment
VA ,22314-1994 U.S.A.• Fax: 1-703-684-2492
'"'·•,(.I,/
First Clean Wat!r Act contllllllld from /lafl' 1
rently holding hearings on CWA reau-
thorization. Boehlert has expressed
reservations about parts of the bill, espe -
cially those concerning wetlands. This
situation could complicate the prospects
for getting a bill out of committee.
During February 16 testimon y
before the Subcommittee on Water
Resources and Environment, WEF Pres-
ident-Elect Richard D. Kuchenrither
discussed the Water Environment Fed-
eration's recommendations for Clean
Water Act reauthorization (see March
Federation Highlights).
On other legislation of note, House
and Senate negotiators reacted agree-·
ment on a final version of unfunded
mandates legislation, which has been
sent to President Clinton for signing into
law. The House hlS passed legislation ro
freeze the federal regi1larory process, as
well as institute new requirements for
nsk assessment, cost-benefit analysis, reg-
ulatory impact analysis, paperwork
reduction, and paving compensation to
landowners for regulatory "takings." The
Senate is now considering these bills .
Finally, the House Appropriations Com-
mittee voted to cut $1.3 billion in
previously-approved funding for a new
drinking water SRF, which has yet to be
authorized by Congress .
WEF will continue to play a key
role in the Clean Water Act reautho-
rization process. "-
Technical Practice Committee
Soliciting Subcommittee Chair,
Publication Proposals
WEF's Technical Practice Committee
(TPC) is soliciting a volunteer to serve as
the TPC Industrial and Hazardous Wastes
Subcommittee Chair to oversee task rorces
developing publications with an industrial
or hazardous waste focus (including toxic
air emissions, pollution prevention,
groundwater, and laboratory issues ). The
Subcommittee Chair will also provide feed-
back to the TPC concerning the industrial
and hazardous waste publications needs of
the Federation's membership.
The TPC is also soliciting proposals
for new publications . Committees and
individuals interested in volunteering for
the subcommittee chair position or
proposing a publication for development
should contact Loma Johnson, techni-
cal publications manager, at WEF
1(703) 684-2460 for a copy of the pro-
posal form and Technical Practice -. -. ~.. .
. ··~-. -..
Operations Challenge
Registration Starts June 1
Operations Challenge is back for
another great event of fun and
excitement. This year, application
forms will be accepted between
June 1 and July 21, 1995 . The
e,·ent is set for Tuesday, October
24 at the Miami WEFTEC . The
pre-competition meeting will be
held on Monday, October 23 . A
maximum of 40 teams will be
allowed in the competition, WEF's
eighth annual wastewater operations
contest. For more information, con-
tact Kathy Allen at WEF, 1(703)
684-2400, ext . 7760.
WEF Member
Appointed Argentine
Undersecretary
Mario R.
De Marco Naon
Mario R . De Marco Na6n, a
member of WEF's Member Associ-
ation in Argentine (AAPAMA), was
recently appointed to the position
of Undersecretary of Environment
for the Argentine government. De
Marco Na6n will continue as pres-
id ent of Argentina's National
In s titute for Water Science and
Technology (INCITH). The orga-
nization, which De Marco Na6n
has headed since 1990, is responsi-
ble for establishing water quality
standards and handles water .
resources research and training in
water resource management.
An attorney, De Marco Na6n
specializes in water and environ-
mental law. He is professor .of
natural resources and environmen-
tal law at the school oflaw of the
University of Buenos Aires. The
author of more than 25. books ;and:-. ... '~ ...... , .... ~~_;
research papers,· he ·has · be.e!l.~:
involved in United Nations ~~er _;
conferences and attended the mi.ri:. ;
isterial conference· on ~a~er ~ppll-;J
and environmental sarutatlon in thc;:i
~·. ~.tf. • "'· ,1h.
1.
2.
3.
4.
AGENDA
ENGLEWOOD WATER AND SEWER BOARD
APRIL 11, 1995
5:00 p.m.
Community Room
MINUTES OF THE MARCH 14, 1995
WATER AND SEWER BOARD MEETING. (ATT. l}
THOMAS PLATING APPEAL (ATT. 2}
MEMO FROM DAVID LEE OF THE ENGLEWOOD GOLF
COURSE. RE: DON COATMAN
OTHER.
City of Englewood
OFFICE OF THE CITY MANAGER
A TT. 2
Doug las A . Cla rk , C ity Mana ge r 3400 South Elati Street
Englewood , Colorado 80 110 -2 304
February 9, 1995
Mr. Steven Way
U.S. E.P.A. Region VIII
999 18th St., Suite 500
Denver, CO 80202-2405
Dear Mr. Way :
Phone (303) 762·231 O
FAX (303) 789-1125
The City of Englewood is currently in need of assistance from the E.P.A. As you are
aware, Thomas Plating Inc. at 4695 South Windermere is currently operating a
plating company in the City of Englewood. For some time now several divisions of
the City have been concerned with this operation. Recently these divisions together
with the State have combined their information and determined there is a
substanfa1l threat to the City.
• Thomas Plating Inc. has recently violated its wastewater permit. Our
wastewater treatment facility has received two criminal convictions against
Thomas Plating for illegal dumping into the sewer system.
• There is an additional concern that a spill onto the ground from this facility
could contaminate the City's water supply system due to the topographical
proximity to the City 's water treatment plant intake downstream.
• If a discharge in larger quantities were re leased into the sewer system from
Thomas Plating, it would have the potential of shutting down the
Littleton/Englewood Wastewater Treatment Plant and have an adverse effect
on other communities downstream on the South Platte River.
• Both the City and State have identified hazardous substances or contaminants
in drums, barrels and tanks on the site that pose a threat to release.
0 -~I';.'
Printed on Recycled Pap er ~~~
Page 2
Mr. Way
February 8, 1995
• Due to the current problems identified by the owner's architect with the
electrical system , there is a possibility of fire. Such a fire or explosion poses a
severe threat to the City of Englewood and surrounding communities. There
is a danger of both air and water borne contaminates . Such a fire will
threaten the City's drinking water as the water supply reservoir and treatment
facilities are located next to Thomas Plating. There is also the possibility of
runoff from fire fighting efforts contaminating Big Dry Creek which runs in to
the South Platte River and the City's water intake .
• As with many smaller cities in Colorado, Englewood does not have the
financial resources to successfully remedy this situation . Therefore, we are
hereby requesting the assistance of the E.P .A.
It is Englewood's understanding and desire to coordinate our efforts to resolve this
problem with both the E.P .A. and the State . Englewood will be pursuing both the
fire and building code issues as to a cease and desist order as well as prohibiting the
business from using the sewer system for industrial waste discharge due to the
violations of the permit. The City's understanding is that E.P .A. will then be coming
forward the same day that we institute these actions to monitor the business
{specifically having someone on site to make sure there is no dumping or other
action taken) or in the alternative will immediately be taking control of the site .
Please direct your response to Jim Blumenthal at 762-2473 .
cc : Dan Brotzman, Assistant City Attorney
Stu Fonda , Wastewater Treatment Plant and Utilities Director
Al Stanley, Safety Services Director
Jim Blumenthal , Fire Marshal and Community Services Manager
Dennis Stowe , Wastewater Treat Plant Manager
TEL NO: C303) 762-2620
CITY OF ENGLEWOOD, COLORADO
DIRECTOR'S NOTICE OF PERMIT REVOCATION
AND SERVICE SUSPENSION
February 23, 1995
tU27 P02
C NCERNING WASTEWATER CONTRIBUTION PERMIT #88-10 ISSUED TO Thomu Plating
mpany Inc. located at 4695 So. Windermere, Englewood, CO 80110
OMAS PLATING COMPANY INC. (HEREINAJiTER "THOMAS"), rrs PRESIDENT, MR. F.
J ROME THOMAS, AND ITS REGISfERED AGENr, MR. JOSEPH M. THOMAS, ARE HEREBY
N D OF THE REVOCATION OF WASTEWATER CONTRIBUI'ION PERMIT #88-10 AND
T SUSPENSION OF SERVICE TO TIIE SANITARY SEWER SYSTEM FOR THE THOMAS
FA.Cll..ITY LOCATED AT 4695 sourH WINDERMERE IN ACCORDANCE WtrH SECTION ll-2·
6 OF THE CITY OF ENGLEWOOD WASTEWATER UTILITY ORDINANCE. THE PERMIT
VOCATION IS EFFECTIVE IMMEDIATELY AND ALL WASTEWATER DISCHARGE SHALL
E IMMEDIATELY FROM THE THOMAS FACILITY.
re.cord maintained by the City of Englewood reflect the fact that Thomas has shown a continued history
of · olation of its permit conditions, specifically:
• Criminal Case number SE9 DOV: 09-20;.00 Permit pH discharge Req--3 counts
Ct 1: No C.Ontest Ct 2 and 3: Dismissed
Limits pH discharge --3 counts
Ct 1 = No c.ontest Ct 2 and 3: Dismissed
$1,000 fine -paid
• Criminal Case number SE 13 DOV: 07-01-91 Discharge contam-matcrials --2 counts
Ct 1: Dismiss Ct 2 : Guilty
$2,000 fme suspended if pays fine on SE14 and no furthers for one year .
• Criminal Case number SE 14 DOV: 07-01-91 Discharge contam-materials --2 counts
Ct 1 : Dismiss Ct 2 : Guilty
$2,000 fine --paid
5 jail days --suspended if no furthers for one year .
,., •• I FEB-22-' 9 _5 WED 14: 15 ID:BI CITY WWTP
irector's Notice of Permit Revocation
e2
. Current Violations JustUytn1 Permit Bevocation:
Date Parameter
cyanide
TEL NO: C303) 762-2620 IH27 P03
I imit Result
1.2 mg/l 1.6 mg/I 6-29-94
10-26-94 1. Discharge of waste chemicals not specified in the Wastewater permit (88-10).
11-3-94
11-3-94
11-3-94
12-5-94
2. Failure to notify the Pretreatment Authority of significant changes in the treatment
system.
3. Failure to comply with the Toxic Orp.nic Management Plan.
chromium/daily ave.
chromium/4 day ave.
zinc/daily ave.
zinc/ 4 day ave.
total metals/daily ave.
total metals/4 day ave.
7.0 mg/I
4.0 mg/I
4.2 mg/l
2.6 mg/I
10.S mg/l
6.8 mg/l
Slug Discharge of zinc and chromium.
65.5 mg/I
16.4 mg/I
44.3 mg/1
11.2 mg/I
111.3 mg/l
28.1 mg/I
Failure to comply with Director's Order dated October 25, 1994.
Failure to respond to Notice of Violation issued November 26, 1994.
Qrdfnance Apthority for Peonit Revocation
Th permit violations cited are cause for permit revocation in accordance with the City of Englewood
Wttewatcr Utility Ordinance. Section 12-2-6F. specifically. .
• Failure of Thomas to report factually the wastewater constituents and characteristics of its discharges.
• Failure of Thomas to report significant changes in operations or wastewater constituents and
characteristics.
•· Violation by Thomas of conditions of permit #88-10~
• ailure of Thomas to report pollutants above levels authorized in the permit.
----+----' EB-22-'95 WED 14: 16 ID:BI CITY WWTP
lrector's Notice of Permit Revocation
e3
TEL NO: C303) 762-2620 IU27 P04
. Condltiocs Reauind To Be Met To Obtaja Beissuapce of Wastewater Contribution Permit
~.Wastewater Contn'bution Pennit may be reissued md service restored to Thomas only upon the completion
~f all the following conditions: ·
11 Completion of a permit application with all necessary information, specifically which must include, at a
1 minimum : a permit condition compliance plan, a spill control plan, a toxic oraanic management plan, and
1 a slug control plan. The entire application must be completed and submitted to the Director of Utilities ,
I who must find that it is complete and acceptable, and it must be approved by the City of Englewood
2[
Industrial Pretreatment Division.
Removal of all stored hazardous waste and hazardous materials not presently used in plant processes.
I Removal must meet all requirements of local, state, and federal laws and regulations . Copies of waste
I manifests generated from the disposal of the above stated wastes must be providt~d to the City of
j Englewood Industrial Pretreatment Division and the City Attorney's office for review and determination
1 that the disposal occurred in a legally and technically sufficient manner.
3 Installation of a "process disChargc only," monitoring manhole. Installation shall meet ordinance
requirements and be satisfactory to the City of EnaJewood Industrial Pretreatment Division in design and
construction.
4 When and if a Wastewater Contribution Permit is reissued, it will exclude the treatment and discharge of
1 concentrated tank solutions. Therefore , disposal of the chromate storage tank and the non-chromate
storage tank contents and the removal of the tanks will be required before a permit can be issued.
. Notice oC !tj:ht of Appeal ind &!peal Process
omas, holder of permit #88-10 may file with the City of Englewood Director of Utilities; 3400 South
ati, Englewood, Colorado, 80110; a written request for reconsideration of the decision contained in this
tice within ten (10) days of this action . The request must set forth in detail the facts supporting the
r quest. The request for reconsideration shall be acted upon by the Director within ten (10) days from the
d te of receipt by the Director. At the request of Thomas, a hearing will be held by the Director before
a¥ng on the request for reconsideration . ·
1J the decision of the Director concerning a request for reconsideration is unacceptable to Thomas, a written
al must be filed with the City of Englewood Water and Sewer Board within ten (10) days after receipt of
Director's decision. The appeal shall be filed with the Board Secretary, Utilities office at Englewood
ty Hall, 3400 South Elati, Englewood , Colorado 80110. The Water and Sewer Board shall hear the appeal
•d shall make a final ruling on the appeal within thirty five (35) days of receipt of the written appeal . The
p'-1tY filing the appeal shall be given five (5) days . written notice of the date and time of the hearing.
ted this __ day or __ _
Stewart H. Fonda
Director of Utilities, City of Englewood
s :bd
c : Hill & Robbins , P.C.
Dan Brotzman, Assistant City Attorney
Draft -2122195, 11 :20 AM
CEASE AND DESIST ORDER
FEBRUARY 23, 1995
CONCERNING THE FOLLOWING DESCRIBED PROPERTY: THOMAS
PLATING COMPANY INC. located at 4695 South Windermere Street,
Englewood, Colorado 80110.
The Owner/General Manager, Mr. Jerome Thomas, IS HEREBY
ORDERED to immediately cease and desist all operations relating to
the handling and use of all Hazardous Materials.
Authorization; Uniform Fire Code (1994) Section 103.4.5., Uniform
Building Code (1994) Sections 102 and 104.2.5., and Uniform Code for
the Abatement of Dangerous Buildings, Chapter 3, Section 301 and
302, Subsections 1, 2, 9, and 16.
VIOLATION HISTORY
1. Notice and Order dated June 2, 1994.
Occupancy Violation: The Order required for plan approval and permits to be secured
no later than December 31, 1994 . The owner has not complied with this Order (ref.
1988 U.B.C. Section 202).
2. Terms of Deferred Prosecution, dated October 3, 1994.
Criminal prosecution of this matter was stayed to allow the owner to address the nine
counts described in the Municipal Court complaint dated August 5, 1994
(Complaint #8121). T~e owner has failed to comply with the following:
• Failure to provide fire sprinkler system as required by U.B.C. 3802 (1988 Ed.) in
violation of Section 8-2A-1, Englewood Municipal Code (as amended).
• Failure to comply with construction requirements for a change in use which is an
occupancy violation under U.B .C. 202(e) (1988 Ed.) in violation of Section 8-2A-
1, Englewood Municipal Code (as amended).
1
Draft -2122195, 11 :20 AM
• Failure to comply with Order issued by Building and Safety and Fire Marshal's
Office dated June 2, 1994, in violation of Section 8-2A-1, Englewood Municipal
Code (as amended).
• Failure to provide ventilation as required by U.M.C. 1105 (1988 Ed .) ventilation
systems for hazardous materials occupancies in violation of Section 8-28-1,
Englewood Municipaf Code (as amended).
• Failure to provide and maintain exists as required by U.F.C. 12.101 (1988 Ed.) in
violation of Section 8-2E-1 , Englewood Municipal Code (as amended).
• Failure to provide proper storage, use, and dispensing of flammable and
combustible liquids as required by U.F.C. 72.101 (1988 Ed .) in violation of
Section 8-2E-1 , Englewood Municipal Code (as amended).
• Failure to comply with the requirements of U.F.C. 80.101 (1988 Ed .) with respect
to storage , use and handling of all hazardous materials within the building in
violation of Section 8-2E-1 , Englewood Municipal Code (as amended).
• Failure to provide a hazardous materials management plan (HMMP) as required
by U .F.C . 80.103(c) in violation of Section 8-2E-1, Englewood Municipal Code
(as amended).
• Failure to provide maintenance and abate electrical hazards as required by
U .F.C . 85.104 -all electrical work to be performed by a licensed electrician as
required by state law in violation of Section 8-2E-1, Englewood Municipal Code
(as amended).
3. Violation of compliance agreement documented by written verification
letter dated November 1, 1994.
The following documentation was to be provided by December 1, 1994:
A. An analysis of Code items to be addressed per Code, i.e.: Building, Fire ,
Mechan ical , Electrical and Plumbing .
B. A "time li~e " including design and actual time to complete .
C . An explanation of the work to be accomplished and the details pertaining
to items you feel would not need to be accomplished.
The owner has failed to comply with all of the terms of the compliance agreement.
2
Draft -2/22/95, 11 :20 AM
4. Thomas Plating Company Inc. is also in violation of the following
maintenance provisions of the Uniform Fire Code:
• U.F.C . 8001.4.4, Suitability of equipment, machinery and processes.
• U.F.C. 8001.4 .7 .1, General.
• U.F.C. 8001.4.7 .3, Defective containers and tanks.
• U.F.C. 8001.5, Release of Hazardous Materials .
• U.F.C. 8001.5.1, General.
• U.F.C. 8001 .5.2 through 8001 .5.2.5, Unauthorized Discharges.
• U.F.C . 8001.7, Identification signs.
• U.F.C. 8001 .8 , Construction Requirements .
• U.F.C . 8001 .9.4 , Electrical Wiring and Equipment.
• U.F.C . 8003 .1.2, Signs .
• U.F .C. 8003 .1.6, Storage Plan .
• U.F .C . 8003 .1.7.3 through 8003.1 .7.5, Drainage Control.
• U.F.C . 8003 .1.8 through 8003.1 .8.2, Ventilation.
• U.F .C. Article 12, Maintenance of Exits and Emergency Escapes .
REMEDY
Prior to resuming operations, the Owner shall:
1. Secure the services of a qualified Colorado Licensed Architect or Colorado
Registered Engineer to perform a thorough Code analysis including a Hazardous
Material Management Plan (HMMP), and develop plans (blueprints) showing in detail
actions necessary to bring the building into compliance with the applicable provisions of
the Uniform Building, Plumbing , Mechanical and Fire Codes, the National Electrical
Code as well as other relevant laws, ordinances , rules and regulations.
2 . Secure plan approval and permits prior to commencement of any construction.
All work shall be performed by licensed contractors.
3. Comply with all Federal, State and local laws and/or regulations.
4. Obtain a Certificate of Occupancy from the Englewood Building Department
which will indicate compliance with the conditions of this order.
Provide a Facility Closure Plan in accordance with U.F.C. 8001.11.
3
Draft -2122195, 11 :20 AM
APPEAL
Be advised that any person having record title or legal interest in these buildings may
appeal this action to the Englewood Board of Adjustment and Appeals provided the
appeal is made in writing and filed with the Division of Building and Safety within thirty
(30) days of the date of this service. Failure to appeal will constitute a waiver of any
right to an administrative hearing .
Dated this 23rd day of February , 1995.
J . R. Blumenthal
Fire Marshal
cc: Doug Clark , City Manager
Dan Brotzman, Assistant City Attorney
A. F. Stanley, Safety Services Director
Stu Fonda, Utilities Director
4
Rebecca Baker
Chief Building Official
ATT. 3
City of Eng le wood
Department of Recreation Services
1155 West Oxford Avenue
Englewood , Colorado 80110
Phone (303) 762 -1168
FAX (303) 762-1159
MEMORANDUM
TO: Stu Fonda, Utilities Director
FROM: Dave Lee, Golf Course Superintendent -~1-.
DATE: February 14, 1995
SUBJECT: Purchase of VFD Pump Station
I have recently had to purchase a variable frequency drive pump
station for the golf course expansion. This purchase involved a great
deal of money and some technical expertise which I do not possess. I
found myself in quite a dilemma and only able to rely on what the
sales people were telling me.
While working with Ron McCulley, he made the suggestion that I
contact Don Coatman of the Utilities Department for some technical
assistance. Don has considerable experience with writing
specifications and purchasing VFD pump stations.
Due to Ron's insights and Don's expertise I was able to save over
$13,000 in the purchase of our new VFD pump station. It is exactly
this type of team work, dedication and helpfulness that makes
working with various City departments pleasurable and profitable
for all.
Please extend my most gracious thanks to Ron!
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