City Council Agenda Packet 02-27-1995 Speciala AGENDA
SPECIAL MEETING - MONTICELLO CITY COUNCIL
Monday, February 87, 1898 - 6 p.m.
Mayor. Brad Fyle
Council Members: Shirley Anderson, Clint Herbst, Brian Stumpf, Tom Perrault
Call to order.
Discussion of alternatives for expansion of the Monticello Wastewater
Treatment Plant.
Adjournment.
Monticello WWTP Hydraulic Capacity
Phase 2 Upgrade
2--
1.8-
1.6-
--
1.8-1.6- Phase 1 Upgrade
1.4-
1.2
.4-1.2 - Imerirn Imarovemems
1 J
0.8 -
it
0.6-
.8-
0.4-
0.4-
0.2-
0.2-
0
0 g I g I g I �gtg g I g I g I g I I 1 1 1 .
vow
WTP Capacity
—Average Wet Weather Flow �
i.'o :.rc J••T
•, --
1
too. ,.
{Tad SLUM
lOlattQr {Tana
MONTICELLO. M.
WASTEWATER TREATMENT PLANT
PACLITV PLAN
TRICKLMa FLTER/ACTIVATED SLUDGE
ALTERNATME PNAISM PIAN
LEGEND
unnuo ruun¢t
uruiuo .wua , a t
cotnT.ano.
-r[.
tro rw.w
rmuim ouio rtT rraa
umtrim maimi-
WIN. nnm
-ruurTut
oTmriuuo.co
III wuw
_
amnia 1sT wuv
dmNISSIO[o
-FAflllint
no nuw
.1. All
r111LL
6attIRL
, 11
`caw lana
ra.a
i � t11c11m1
i
t 1
C:D\ 1
1� 1
t 1D.
' ` l traaSLUM i
1 010[1x01 00"m
/ 1
1 MONTICELLO. MM.
WASTEWATER TRlArKMT PLANT
FACILITY VLA"
ACTIVATED eLUOOE ALTERRATIVE
IPMASM PLAN
LEOEMO
Q(11111"0
.raClL11111
unarm
solsrwsrla
_Ir.
t"o owu
ratan..
_Ulall"0
molrlm 0001110 Ifr was[
1"x1101 .1t11D
RI Cabr vla1
Sray,
IIR] ---DItr
w1a51
-
01agI11a1 Isl n1.0
DEMNIUKWO
_PKIWI11
too rwu I
(20%)
Total 620,000 17,090,000 I 4,240,000
)-=&MaM%WNC%vW"TW
a' Monticello, MN Wastewater Treatment Plan, .
Summary of Phasing Plan
Trickling Fitter/Activated Sludge Alternative
Interim
Phase I
Phase II
1.
Preliminary Treatment
350,000
2.
Raw Pumping____ _
80,000
70,000
3.
Primary Clarifiers 350,000
50,000
300,000
4. #.
Yard Piping- - N - - A- -
190;000
S.
Trickling Filter
420,000
420,000
S.
Intermediate Clarifler/Pumping
601000
7.
Activated Sludge
90,0.00_
390,000
8.
Final Clarifier
1,000,000
9.
Sludge Pumping Facility
700,000__
10.
Disinfection
100,000
11.
DAF Thickener
390,000
12.
Sludge Storage
720,000
13.
Existing Digester Renovation
880,000
14.
Replace Pumps/Blowers
90,000
15.
Demolition
30,000
18.
Electrical/Mechanical
400,000
260,000
17.
Interim Improvements 110,900
18.
Odor Control
1,400,000
Subtotal, Construction Cost 460,900
5,250,000
3,140,000
Contingencies (15%) 69,100
790,000
470,000
Engineering, Legal, Administrative 90,000
1,050,000
630,000
(20%)
Total 620,000 17,090,000 I 4,240,000
)-=&MaM%WNC%vW"TW
Monticello, MN Wastewater Treatment Plant
Summary of Phasing Ptan .
Activated Sludge Alternative'`
Interim
Phase I
Phase II
1.
Preliminary Treatment
350,000
2.
Raw Pumping_
80,000
70,000
3.
Primary Clarifiers
350,000
50,000
300,000
4.
Yard Piping
210,000
5.
Activated Sludge
480,000
290,000
6.
Final Clarifiers
1,000,000
7.
Sludge Pumping Facility
700,000
S.
Disinfection
100,000
9.
DAF Thickener
390,000
10.
Sludge Storage
720,000
720,000
11.
Existing Digester Renovation
880,000
v
12.
Replace Pumps/Blowers
90,000
13.
Demolition
30,000
14.
Electrical/Mechanical
630,000
30,000
15.
Interim Improvements
110,900
16.
Odor Control
1,300,000
Subtotal, Construction Cost
460,900
6,910,000
1,410,000
Contingencies (15%)
69,100
1,000,000
210,000
Engineering, Legal, Administrative
90,000
1,380,000
280,000
(20%)
_
Total
620,000
9,290,000
1,900,000
1.
2.
3.
Monticello, MN Wastewater Treatment Plant
Evaluation of Treatment Alternatives
Trickling
Filter/Activated Activated Sludge
Sludge
Treatment Capability
a) Process able to meet
Yes
effluent limitations
b) Odor control
High
requirements
Operational Flexibility
^Ability
a) to handle "shock"
Good
loadings
b) Level of operator skill
High
required.
c)_ Number of unit processes
8
Financial Considerations
a) Annual equivalent cost $1,510,620
b) Total Capital Cost $11,950,000
Required
c) Estimated Operational $503,000
Cost
JVn&w%CML%M=L wn.ln
Yes
Medium
Fair -
High
6
- $1,591,982-
$11,810,000
$536,000
� Monticello, Mn. Wastewater Treatment Plant Facility Plan -Recommended Interim Improvements
Recommended Short-term Action Budgetary Estimate
$1AW
Primary Clarifier
Construct I new 45 R. diameter primary clarifier without cover, with splitter box and necessary
$350.000
yard piping.
Raw sewage pumps
400
Provide a cable restraint system into the raw pump pit.
Intermediate transfer plumps
8,000
Switch Intermediate transfer pumps with flow equiliration pumps.
Activated sludge blowers
30,000
Install 1 new, larger au blower in activated sludge blower building.
Primary and secondary scum pumps
Replace the non -operational scum pump with an air -operated diaphragm pump, electric operated
10.000
diaphragm pump, or rotary lobe type pump.
Anaerobic digesters
Inspect first stage digester cover as soon as possible. Determine repairs/replacement needs.(Note:
2S 000
cost of replacement cover is included In Phase 1 cost estimate). Provide a cable restraint system
,
for each digester access ladder.
Sludge storage
Provide a cable restraint system for each digester access ladder. Repair draw -off and fill piping
35A00
supports. Repair digester in piping connection.
Gas management system
Install a condensate sediment accumulator to the digester gas piping. Replace the non.
20.000
operational gas drip traps and add drip traps at all valved locations on the digester gas piping.
Install a flame arrester on the digester covers gas piping.
Heat reservoir system
Z,500
Replace the boiler controller.
Budgetary Estimate rot Interim Improvements
$160900