HomeMy WebLinkAbout1989 Resolution No. 032RESOWI'IOO 00. ~
SEl\IF.s OF 1989
A RESOWl'IOO ~ l\ME2DIENl' '11'.) THE EN:;INEERIH; DESIQl aNmACT FCR THE
BI-CITY WASTEWll'ER 'ffiEA™fNl' PLAN!' UH; RAN'.iE MASTl!ll PLAN .
Wl!ERFA5, City Couocil, by Resolution No. 20, Series of 1988, approved
the Long Range Master Plan fot the Littleton/Engl<!'.ood Bi-City Wastewater
Treatment Plant; and
~ll!ERF.AS, as part of the Long Range Master Plan, the Bi-City Joint
Venture entered into an agreem,nt for design and construction engineering
services with Brown and cal dwell for Bi-City 1-Wl'P inprovements; and
Wl!ERFA5, Bi-City Wi'lll' desires to 111end this agreerrent for engineering
design fees to inplement solids handling/ooor reduction projects in the Long
Range Plant;
tol, 'l'flEREFOlE, BE IT RESOLVED BY THE CITY CXXJOCIL OF THE CITY OF
~, ~, THAT:
Section l. Amenarent No. l to Agreement for Design and Construction
Engineering services between Cities of Littleton and Engl""""'1 and Brown and
caldwell for Bi-City Wastewater Treatment Plant Inproverents is hereby
approved. A copy of Amenarent No. l is attached hereto and incorporated
herein by reference.
Section 2. '!he Mayor and City Clerk are hereby authorized to sign and
attest Amenarent No. l to Agreerrent for Design and Construction Engineering
Services with Brown and cal dwell.
l\OOPTED AND APPROVID this 15th day o f May J.
2 .0::, .,_ ~ / Attest : ) j (,; I --;,' • i._.l
, 14( f,_. ,~.,.L..., .,.t l'-l<
Patricia H. crow , City Clerk
I, Patricia H. crow, City Clerk of the City of Engl""""'1, Colorado,
hereby certify that the above is a true copy of Resolution No • .22:, Series of
1989. (2 / /?
r:lu r1 d 1$ l1r~,(,r
Fdtricia H. crow
AMENDMENT NO. 1
TO
AGREEMENT FOR DESIGN
AND
CONSTRUCTTON ENGINEERING SERVICES
BE'IWEEN Cl11ES OF
UTIU!TON AND ENGWWOOD
AND
BROWN AND CALDWElL
FOR
Bl-CITY WASI'EWATER ffiEATMENT PLANT IMPROVEMENTS
THIS AMENDMENT TO AGRE .. ,AENT, made and entered in lo on this
day of---~-• 1989, hy and helween the joint venture entity comprised of the cities
of Littleton and Englewood, Colorado, herein collectively referred to as "Owner," and
Brown and Caldwell, Inc., authorized to prov:de engineering services in Colorado,
hereinafter referred to as "Engineer":
WITNESSE11-I :
WHEREAS, Owner has completed a Long-Range Master Plan for the Di-City
Wastewater Treatment Plant (WWf P); and,
WHEREAS, Owner and Engineer entered into an Agreement on Septemher 19, 1988
to provide design and construction engineering services in connection with implementation
of this Long-Range Master Plan, herein referred to as the "Project"; and,
WH EREAS , Engineer has completed an Odor Management Study which identifies
and prioritizes odor sources at the Bi-City WWTP and recommends early implementation
of Phase 1B sludge thickening improvements to minimize odor production ; and
WHEREAS, Engineer has completed preliminary design of Phase IA improvements
and recommends that specific Long-Range Master Plan concepts be modified; and
WHEREAS, the Owner, after considering the Engineer's presentation made to the
Bi-City WWT? Supervisory Committee on February 17, 1989, and to the Joint Council
Study Session on March 14, 1989, has determined to retain the Engineer to perform the
reqHired services under the terms and conditions set forth hereafter ; and,
Amendment No. I
May 8, 1989
Page I of 5
WHEREAS, Engineer has available and offers to provide personnel and facilities
necessary to accomplish the work under the terms an d conditions set forth hereafter; and,
WHEREAS, Owner may elect to apply and receive a grant or loan authorized hy the
1987 Amendments to the Clean Water Act, as administered hy the State of Colorado, and
this Agreement conforms to Section 1030, Part 33, Title 40 of the Code of Federal
Regulations (CFR), as published in the Federal Register of March 28, 1983; and,
WHEREAS, Owner and Engineer have completed negotiation of price based on
certified cost data submitted by the Engineer.
NOW, THEREFORE, Owner and Engineer agree to amend the Agreement as
follows:
I. DESCRJPTION OF PROIBCT
Under Article I, "Description of Project," replace the first sentence with :
Owner and Engineer agree that the project is as descrihed in
Exhibit A entitled "Project Description" dated August 26, 1988, as
amended herein , and as described in Exhibit A-1 entitled "Project
Description" dated April 7, 1989."
Under Exhibit A, "Project Description," Article Ill, "Description of Phase IA
Improvements," change the heading "Chlori nation System" to "Disinfection System" and
replace the first paragraph under thi s heading with the follow ing and delete the la st
paragraph :
The disinfection system will incorpornte the use of liquid sodium
hypochlorite and liquid sodium bisulfite . The existing chlorine building
will be modified for use with the new liquid disinfection system."
Under Exhibit A, "Project Description," Article IV , "Project Staging," replace both
paragraphs with the following:
All planned Phase IA improvements shall be consolidated into
a single construction contract and a single equipment prepurchase
contract. All engineering design work relat,~d to Project IA shall he
incorporated into a single project to be completed by July 31, 1990, and
in general conformance with the program implementation schedule
shown on Figure A-1 dated February 17, 198\1 '
Amendment No. l
May 8, 1989
Page 2 of 5
Under Exhibit A, "Project Description," Article V, "Engi ne ering Stages," "Stage 3
Equipment Prepurchase," replace the paragraph with the following :
One set of equipment prepurchase specifications and contract
documents shall be prepared covering all aspects of the Phase IA
project. Delivery of major equipment components will he coordinated
with the construction contract to eliminate handling an d storage by the
Owner . Manufacturer's fabrication drawing s shall be reviewed hy the
Engi,:eer during the design period . Details specific to the prepurchased
equipment shall be incorporated into Project IA engineered plans .
Under Exhibit A, "Project Description," Article VI, "Project Schedule," replace
project IA-I a»d project IA-2 and their respective completion dates with the following :
"Project IA July 31, t99c··
II . SCOPE OF ENGINEERING SERVICES
Under Article 11, "Scope of Engineering Services," Paragraph A, "Planned
Engineering Services," add the following as the second sentence:
Engineer agrees to perform addit ional tasks described in Exhibit
B-1 entitled "Scope of Engineering Services," dated April 7, 1989."
Under Exhibit B, "Scope of Planned Engineeri ng Services," delete all prouuct
deliverables and deadlines related to Project IA-I and replace all reference s to Project IA-
2 with Project IA . Delete redundant tasks 2.17 Coordination Ch ec k, 2.18 Construction
Cost Estimate, and 2.19 Contract Documents .
IV. AU1llORIZA11ON, PROGRESS, AND C'OMPLETION
Under Article IV, • Authorization, Progress, and Completion," add the following
paragraph:
In signing this Amendment No . I to Agreement, Owner grants
Engineer specific authorization to proceed with the wo rk described in
Exhibit B-1. The work shall be completed in accor dance with the
schedule set forth in Exhibit A and as modified by Amendment No . I."
Amendment No. I
May 8, 1989
Page 3 of 5
-V.
COMPENSATION
Wher !Ver th~ words "Exhibit B," occur, change to "Exhibits B and B-1."
XVII. EFFECI1VE DA1E
This Amendment No. 1 to Agreement shall be effective on and from the day and
year first above written .
Under Exhibit C, "Compensation," add a th ird paragraph to the preamble as follows :
Estimate d level of effort by project task and labor
category for services described in Exhibit B-1 are itemized in
Table C-3 . Total labor costs (time related charges plus
overhead), direct expenses and fixed fee are summarized at the
bottom of Table C-3."
Under Exh ib it C, "Compensation," Article IV "Fixed Fee, replace the first sentence
with the following :
The fixed fee for the total time and expense
compensation shall be $199,633 for the work described in
Exhibit B and $39,272 for the work described in Exhibit B-1 ,
for a total contract fixed fee of $238,905 ."
Under Exhibit C, "Compens ation," Article V, "Limitatinn of Cost and Time ,"
wherever the words "Exhibit B" occur, change to "Exhibits Band B-1" and re place the fir st
sentence with the following :
The total cost to the Owner for all as pects of this
Agreement as amended shall not exceed $1 ,464,284 for the
work de sc ribed in Exhibit B and $279,112 for the work
de sc ribed in Exhibit B-1, plus the tr>ta'. fixed fee of $238,905 ."
Amendment No . 1
May 8, 1989
Page 4 of 5
IN WITNESS WHEREOF, the Engineer am! the Owner do hereby execute this
Amendment No . I to the Agreement.
CITY OF ENGLEWOOD
By
Title
Dale
CITY OF LITrLETON
By
Title
Dale
BROWN AND CALDWELL, INC.
fA,; 1 ,4 iloeA-<«H . By
Title \jf (J
Date
Amendment No . I
May 8, 1989
Page 5 of 5
cmES OF UTIUITON AND ENGLEWOOD
BI-CITY WASl'EWATER 'JREATMl!NT Pl.ANT IMPROVEMENTS
EXHIBIT A-1
PROJOCI' DESCRIYTION
·This exhibit presents a description of the proposed Phase 1B facilities recommended
for early implementation in the Odor Management Study Lener Report dated Febru:1ry 15,
1989. These improvements will help to minimize odor production hy modifying existing
sludge detention in the primary clarifiers, sludge pumping facilities, and by pro •1iding a new
dedicated sludge thickening system. Treatment plant components included under
Amendment No. 1 arc described in the following paragraphs.
111. DESCRIPTION OF ODOR MANAGEMENT IMPROVEMENTS
The Owner desires to proceed with design, construction, and start-up of four Phase
1B projects se lected to improve odor management capability. Specific treatment plant
components included under this Amendment are described in the following paragraphs .
Diswlved Air Flotation Thickening
Dissolved nir flotation thickening (DAFT) units will he located in an open area
adjacent to the south side of the existing digester complex. Two 45-foot diameter DAFTs
will be built with a contiguous equipment gallery . The DAFT tanks will he covered for
odor containment. Foul air from the DAFT tanks will be biologically treated in adjacent
nitrifying trickling filters before it is released to the atmosphere. Thickened sludge or noat
will be skimmecl from the surface and pumped to a thickened sludge mixing tank at the
digester complex. J'he thic ke ner liquid efnuent (subnatant) will now out of the tank via a
submerged orifice coll ec tion system. Subnatant will he returned by gravity now to the plant
headworks . Bollom sludge consisting primarily of grit and heavy solids will be removed and
pumped to existing grit handling facilities located at the plant headworks.
A float collector ,~onsistin g of multiple collector nights will he incorporated into
each OAF thickener . Variab le speed positive displacement pumps wi ;! be designed to
pump thickened sludge noat directly from the collector troughs at the point w11ere they abut
the side of the DAFT tank. These pumps, located in the equipment gallery immediately
adjacent to the DAFT tanks, will pump thickened sludge to the existing anaerobic digesters.
Two night collectors, 180 degrees apart , similar to those used in circular primary
se dimentation tanks , will he employed to direct the bollom sludge to suction sump near the
center bonom of the DAFT tank . Bottom sludge pumps will be located in the same
equipment areas as the thickened sludge pumps and will be directly connected to these
sumps.
Exhibit A-1
April 7, 1989
Page 1 of 3
The DAFT tanks will be provided with pressurization pumps , air compressors, and
two dissolution tanks . The two air dissolution systems shall be designed to operate together
to provide the required air-to-solids ratio at peak day sludge produclion. J\t the design
average daily sludge flow, only one dissolution tank and pressurization pump will he in
operation; the other dissolution tank and pressurization pump will he a standby. Under
normal operation, the air dissolution system will operate using sr •,1atanl for the pressurized
now slream. A polymer feed syslem will be provided to permit one dissolution system 10
thicken the peak day sludge loading in the event the standby dissolulion system is out of
service.
Primary Sludge Pumping Modification.~
Each primary clarifier will be provided with one sludge and one scum pump. One
spare pump will be provided as a standby for each type of service . Replacement of unils
requiring maintenance or repair with lhe spare pumps will preclude lhe need for piping
manifolds, simplifying pump station operalion and mainlenance. The capacily of the new
pumps wil! allow continuous remov al of primary sludge as it is collected in the cen1er
hopper. For safety and corrosion considerations, the pumping station ven1ila1ion system will
be upgraded to a mini mum of 15 air changes per hour in both the ground floor and pit
floor areas . In addition, all existing scrubbing equipment will be removed from the ground
floor level.
Modifications to the existing floor drain sys1em include enlarging the existing sump,
providing another sump pump, and increasing pump discharge size from i1 s presenl 2-inch
diameter. For greater flexibili1 y, lhe discharge line will he rerouled from the exisling
discharge point in the primary cl urifier Number 4 10 discharge in10 1he spliller box upstream
of the primary clarifiers .
P•imary Clarifier Modificat ions
A dedicated lank drai na ge system, which will allow a clarifier to be drained wilhin
7 hours (o ne shift), is planned The lank drain syslem includes the construction of drain
piping, isolation valves or gates, and slructural modifications to lhe four primary clarifier
tanks
Concrete surfaces above the waler surface level on the primary clarifiers will he
sandblasted down to structurally sound surfaces, and treated with a vinyl ester mortar
coating to prevent degradation of concrete in the clarifiers, scum boxes, and effluent boxes .
RSS Wetwell
The exisling RSS welwell s1ruc1ure will be modified 10 prevenl developmtnl of
s1:1gnan1 areas al 1he unmixed end of 1he lank . The cascade of secondary sludge over 1he
weir gates will he eliminmed lo prevenl air s1ripping of odors . Mechanical mixers or
diffused air will be used to circulate sludge wi1hin 1he wetwell to ensure thal aerobic
conditions are maintained .
Exhibil A-1
April 7, 1989
Page 2 of 3
VII. PRELIMINARY DRAWING ESTIMATE
For purposes of estimating the level of effort and project documentation for the odor
management improvements, the following preliminary detailed design druwing list has been
jlrcpared although the distribution between project clements is expected to vary, the total
estimated drawing count of 95 reflects the scope of plunned engineering services as of the
date of this Amendment to Agreement.
TuskJfu.
2.20
2.21
2.22
2.23
Total
Odor Management Improvements
Preliminary Drawing Estimate
Project area
Dissolved air flotation thickeners
Primary sludge pump station
Primary clarifiers
RSS system
Drawing
eID!Illlle
62
19
9
5
_9_5_
Exhibit A-1
April 7, 1989
Page 3 of 3
11-aTY WWTP 1888 1980 1891 1992 1993 .....
PHAII! 1A HUii u1m•1 -u11 111mo•m •11m•1-n11 u1m•1uu urn,•1 -m1 1111"'-'" ....
~.._
I!] IIDDINC • AWMIO 1 l'IIIMNII~ b' 1 DURATION -:21 MONlHS
I
e PROJECT MANACEMEl'T 11!1 SUIYlnAl. llilE\1EW
e COOR MANACEMEl'T S1\JDY
-WNM'AC'NM:
I I ~ CONS1"UC110N ·---I S)'AQE 2 -22 MONTHS . I T COMl'l.ETION WllUlONt e PRELIMINARY DESIGN
e PROJECT 1 A DESIGN V /. ,,,,.,"J/,n ,_,,,,,,,,,.i".J II01D
1. NPDES PERMIT
REQUIRES COMPLIANCE ·--ISTACE J-10 Ml 'MlH HEW AMMONIA
DISCHARGE LIMITS e PPOJECT 1A .,,,.,, BY JANUARY 1993
e EOUIPMDH MANUFAC1\JRE 2. RETIREMENT Of e EQUIPMENT DELIVERY ... ·-----ENGLEWDOO Pl.ANT I rouows COMPLETION
I Of INFlUENT SEWER ·----I · STACE 4 DURATION -27 MONlHS ·I RELOCATION , AERATION
e PROJECT 1A t,l.cl, ---... BASINS • DISINft:CTION
e El'Gl!WOOD RETIRED .,,. SYSTEII
e HTF SYSTEM . .,,. . J . PROPOSED PROJECT
ELEMENTS 4 • S
TO BE ADDEO TO
I ITNIT~Alf)CftllATIONI ST~CE 5 DURA. l}ON -J2 l.t ONniS . I SCOPE or EIIGINEERING
SERVI CES BY --At.lt.lEHDUENT
CITIES of LITTlETON and ENGLEWOOD I FIGURE A-1
Ina~---Bl-CITY WASTEWATER TREA1MENT PLAN PROGRAM IMPLEMENTATION SCHEDULE
CITIES OF LITTLETON AND ENGLEWOOD
Bl-CITY WASTEWATER TREATMENT PLANT IMPROVEMENTS
EXHIDITB-1
SCOPE OF ENGINEERING SERVICES
Planned engineering services 10 be performed under !his Amendrncn1 10 Agreemenl
comprise, and are limiled 10, 1hose specifically set forth in !his exhibit These services are
rela1ed to the design of the Bi-Cily Waslewater Treatmenl Plant (WWrP) improvemenls,
as described in Exhibit A-I.
Engineering Design Services
Specific detailed design work !asks to he performed hy Engineer under 1his
Amendment to Agreemenl are as follows:
Task 2.20 Dissolved Air Flotation Thickeners. Under this 1ask, design of 1wo new
45 -fool diameler dissolved air flma1ion 1hickening (DAFT) lan ks will be performed .
Facililies for mixing and dis1ribu1ion of raw primary sludge and waste secondary sludge will
be provided. A sludge blending tank to hold 1hickened sludge prior 10 · ••aerobic digestion
will he incorpora1ed inlo the design . A contiguous equipmenl gallery wiil he provided 10
house process piping, pumps, compressors, dissolution tanks, polymer feed system, and
relaled mechanical equipment The DAFT tanks will he covered and ven1ila1ed. Exhausl
air from lhe DAFT tanks will he biologically 1rea1ed lo remove odors prior to discharge to
atmosphere. An eleclrical equipment building will he designed to house motor control
centers and electrical panel hoards required for the DAFT facilities.
This task shall include a 2-day 1our of recenlly comple1ed and fully operational
DAFT facilities lly two memhcrs of the Di -C i1y wwrr staff and two members of the design
team. Areas of poten1ial improvement shall be iden1ified and incorporaled inlo 1he DAFr
design for lhe Bi -C ity W\VfP. A let1er reporl summarizing 1he findings of the tour shall
be provided 10 lhe Owner.
Task 2.21 Primary Sludge Pumping Modifications. A new primary solids pumping
syslem shall he designed 10 provide one sludge and one scum pump per primary clarifier.
The sludge pumps shall he size d IO permil con1inuous removal of primary sludge from 1he
existing clarifiers. Scum pumps shall be positive displacemenl 1ype designed for in1ermi11e111
manual opera1ion wilh pump conlrols located on the ground floor level adjacent to exis1ing
scum collection sumps. New motor con1rol ce111ers will be installed on the ground floor of
the pump station to serve the new pump s. A pump room drainage sump equipped with two
submersible pumps shall be provided . The sump pumps shall discharge to the existing
primary now distribution structure.
Exhibit B-1
April 7, 1989
Page I of 2
The ventilation system shall be modified to provide fresh air supply at the ground floor
level and new exhaust ducts at the perimeter of the pump room . A minimum of 15 air changes per hour shall be provided.
Task 222 Prima,y Oarifier Modifications. A gravi ty drain system shall be designed
to drain the existing clarifiers within a 7-hour period . New drain lines from each existing
tank shall be manifolded to one dedicated drain line discharging to the plant headworks.
control centers . The clarifier dra ins shall be contr lied by means of manually operated
valves or gates . Procedures for restoring damaged concrete surfaces above the normal
water levtl shall be specified and deta iled under this task.
Task 223 RSS System. The existing RSS wetwell shall be modified to provide
control of liquid level and mechanical sludge mixing . The existing RSS detention tank and
associated feed pumps and piping located at the solids handling building shall be removed .
Existing RSS pumps located at the existing secon dary sludge pump building shall be
modified to pump secondary sludge directly to the new DAFT sludge mixing and distribution structure .
Exhibit 8-1
April 7, 1989
Page 2 of2
Tobit C-lto of Llttltton ond f"ll.....t
ll·Clty Wntew.ttr Tr11t.nt Phnt l~roveNntl
~t llo . 1 levtl of Effort EltlNtt
·················································································•·11••········································································•11••·········
Ml.IDS HANOLING 1 .. ltOYUiENTI
2.20 OAF Th I cktncra
2.21 PrlNry Sludge
P..,,.,11"111 Nodtflc■tlont
2.22 Prl•ry Clutfl1r1
Nodlflc ■tlons
2 .23 US Syst•
Total, hours
Total Labor Colt, dollars
Direct hptnttl
travel/lodging
Copy/pr int
Ml luge/tulo
C~ter 1ystm
hltphont/Nil
Profuslonel ftchnlul Achlnlstratlon
Principal S~rvtr Nanettr Stnlor EntlnNr Men1gtr CADD Onlpr Onftsan M1n1ger O ■tl/WP Stcreury Cl ■rk
n 96 290 m 480 1811 320 460 540 24 136 BO 36
36 96 192 252 48 96 112 136 40 12
16 24 76 ea 140 16 36 56 60 24
36 40 60 16 24 40 40
96 156 491 932 261 476 661 776 36 201 ea 36
9 ,173 13,621 36,701 49,227 45,791 15 ,364 23 ,391 27,315 29,659 1,572 6 ,530 2,114 1,223
Tout
3,194
1,021
536
276
5,034
261,812
3500
3700
300
9500
30C
Total Direct hpensH 17300
Fl ud '" 39,Zn
Total ~t Price 318,384
Cl11ES OF l.lTn..E'roN AND ENGLEWOOD
Bl-0 Y WASTEWATER TREATMENT PLANT IMPROVEMENTS
AMENDMENT NO. 1 HIGHLIGI-ITS
Dissolved Air Flotation Thiclceoing Process
Mechanically complex process.
Includes all major solids streams.
-Handles major recycle streams.
Requires many ancillary an d support systems.
Related Solids Handling Improvements
Involves design in areas of the plant that were not part of the original
project, including primary clarifiers, primary and secondary pump
buildings, and digester complex .
Amendment Cost Analysis
62 engineered DAFT drawings, 33 retrofit drawings for a total of 95
additional drawings .
Total engineering cost ceiling is $318,384.
Total conslruclion cost estimate is $2 .668 million .
Amendment unit cost of $3 ,350 per drawing i; lower 1han original
contract unit cost of $3,450 per drawing .
Based on level of effort estimate, Amendmen1 No . I amounts to 24-
percenl increase in design work, hut represents only a 19-percent
increase in total project cost.
Project No . 4120 Odor Management Improvements
·••••••••••••••••••••••!::!!:!~=~-~:::!~~-:!:!••••••••••••••=•••s••••••== W Scale
sheet Drawing
no. no. Title/Category in/tt
l
2
3
4
5
6
7
8
9
10
11
12
P2601
P2602
P4001
P7001
P7002
P7003
P7004
P7005
P7201
P7301
P7501
P870l
Architectural
13 A2601
14 A2602
15 A7001
16 A7002
17 A7701
-18 A7702
.19 A7703
Structural
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
-6/89
S2001
S2101
S2l J2
$2601
l'2602
S26 03
S4701
S7001
S7002
S7003
S7004
S7005
S7101
S7102
S7103
S7104
S7105
S7106
S7107
S7501
S7502
57701
Primary Sludge and Scum Pumping
Tank Drain System
Waste Secondary Sludge Pumping
Sludge Mixing and Distribution System
OAF'" Compressed Air system
DAFT Pressurization System
DAFT Polymer System
DAFT Odor Control System
OAF Thickener No. 2
OAF Thickener No. 3
Th ickened Sludge Pumping
Centrate Equalization system
Plan and Schedules
Sections and Details
DAFT Gallery Floor Plan and Schedules
DAFT Galle~y Interior Elevations
DAFT MCC Building Floor Plan
DAFT MCC Building Elevations
DAFT MCC Building Interior Elevations
Drain Sump Plan and Sections
Tank Floor Plan and Details
Sections and Details
Demolition Plan -l
Demolition Plan -2
Drainage Plan
RSS Wetwell Plan and Sections
DAFT Gallery Foundation Plan
DAFT Gallery Roof Framing Plan
DAFT Gallery Roof Plan
Sections and Details
Sections and Details
DAFT Tank Section
DAFT Tank Floor Plan and Details
DAFT Tank Cover fra mi ng Plan
DAFT Tank Platform and Details
DAFT Tank Sections and Details
DAFT Polymer Tank and Details
Sections and Details
Sludge Blending Tank Floor Plan
Sludge Blending Tank Root Plan
MCC Building Foundation Plan and Details
Pagel or 3
Project No. 4120 Odor Management Improvements
Preliminar y Drawing List
--------------------•---------------•--•-----------------------m-;~:~:-•--
Sheet Drawing
no. no. Title/Category in/tt
42
4J
44
Mechanical
45
46
47
48
49
50
51
52
SJ
54
55
56
57
58 -~ l
62
6J
64
65
66
HVAC
67
68
69
70
Electrical
71
72
7J
74
75
76
77
78
79
80
~/89
57702
5770)
57704
H2001
H2101
H2102
H2601
H2602
H260J
H2604
M4701
M700l
M7002
!700J
M7004
M7005
M7006
M7007
M7101
H7102
M710J
H7501
M7701
M7702
M8701
H2601
H700l
H7701
H7702
E2 u01
E2002
E2601
E2602
E260J
E2604
E2605
E2606
E2607
E2609
HCC Building Floor Reinforcing Plan
HCC Building Roof Fram i ng Plan
MCC Building Sections and Details
Drain sump Plan and Se c.tions
Tank Floor Plan and E<fui pm ent List
Sections and Details
Ground Floor Plan
Pump Roo m Floor Plan
Roof Plan
Interior Elevations
RSS Wetwell Plan and Sections
DAFT Ga l lery Plan
DAFT Center Gallery Plan
DAFT East Gallery Pa rt Plan
DAFT West Gallery Part Plan
DAFT Gallery Interior ~levations
DAFT Gal l ery Roof Plan
DAFT Gal l ery Plumbing ?lan
DAFT Tank Section
Sections and Details
Sections and Deta i ls
~ludge Bl ending Tank Plan and Section
Drainage Plan and Plum~ing Isometric
Roof Plan and Equipment List
Centrate Storage Tank -Plan & Sections
Air Flow Schemat i c
Airflow and Temperature Control Schematics
Airflow and Temperature Contr~l Schematics
HVAC Plan, Sections, and Details
Lighting Pla n
Power Plan
Ground Floor Li ghting Plan
Ground Floor Power Plan
Ground Floor MCC ~lan
MCC Elevations
Pump Room Lighting Plan
Pump Room Power Plan
One-Line Diagram
one-Line Diagram
Page 2 of J
Project No. 4120 Odor Management Improvamenta
Preliminary Drawing List
---------------------------------------------------------------;~=~=----
Sheet Drawing
no . no. Title/Category in/ft
81 E4001
82 E4002
83 E7001
84 E7002
85 E7003
86 E~004
87 F.,"'15
BB .i. _ 16
89 ' E70 07
90 E700 G
n E7 009
92 E70 l v
93 E770l
94 E7702
95 E7703
Pump Room Power Plan
Pump Ona-Line Diagram
DAFT Gallery Lighting Plan
DAFT Center Gallery Power Plan
DAFT East Gallery Power Plan
DAFT West Gallery Power Plan
DAFT Gallery Roof Lighting and Power Plan
DAFT One-Line Diagram
DAFT One-Line Diagram
DAFT one-Line Diagram
DAFT one-Line Diagram
DAFT one-Line Diagram
MCC Building Lighting Plan
MCC Building Power Plan
MCC Elevations
Page 3 or 3
COUNCIL CONNUNICATL!J!
DATE
May IS, 1989
INITIATED BY
STAFF SOURCE
PREVIOUS COUNCIL ACTION
AGENDA ITEN
11 (f)
SUBJEC Amendment to the Engineering
Design Contract for the
Bi-C itt WWTP Long Range Master Plan .
Bi -City WWTP Superv 'so ry r.ommittee
Stewart Fonda
Council approved by resolution an Agreement for Design and Construct ion Engineering
to implement the Long Range Master Plan .
~CTION PROPOSED
f.r.glewood City Council pass a resolution appro~i~g the attachea amendment to the
contract for engineering design fees to implement sol ids handling/odor reduct ion
projects in the Long Ran ge MastPr Plan .
BACKGROUND
City Council Resolution Number 20, series 19B8 was passed and approved on April 18,
1988, authorizing the implementation of the Bi-City WWTP Long Range Master Plan . An
Engineering design contract was ent ered into with Brown and Caldwell to perform the
design for Phase IA of the plan . In addition, an odor study was to be performed to
evaluate four specific projects in Phase IB 'or earlier implementation .
The results of the odor study were presented at a Joint Council meeting on March 14,
1989. The study recommended additional work to be included in Phase IA . The two
cities' councils approved the study reco11:,nendations and directed the Bi-City Commit-
tee to implement them . Upon review of the Brown and Caldwell proposal for enginee r-
ing services to design the facilities for odor reduct i on . The Bi-City Committee
approved the proposal and recommended council approval. This work includes dis -
solved air flotation thickeners, primary sludge pumps, primary clarifier modifica-
tions and return activated sludge wet well modifications . Brown and Caldwell has
prepared an amendment to the original contract to perform the additional work .
, I
FINAIICIAL
Ahe total request for the amendment 1s $318,384 . When approved, the total revised
~mount of the contract w111 be Sl,982,301. Adequate funds are available in the
Sewer Fund to complete this work. The cost w111 be included in the 1989 budget revision .
RECOIIIENDA TI ON
Council approve the resolution amending the contract for enginee ring design fees to
implement solids handling/odor reduction projects in the Long Range Master Plan .