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MISCELLANEOUS PLANT IMPROVEMENTS
ITHACA AREA WASTEWATER TREATMENT PLANT
Prepared for
CITY OF ITHACA, NEW YORK
Prepared by
STEARNS & WHELER, LLC
Environmental Engineers and Scientists
One Remington Park Drive
Cazenovia, NY 13035
March 2007
Project No. 5011610
TABLE OF CONTENTS
CHAPTER I - INTRODUCTION
CHAPTER 2-BACKGROUND
Page
02.1 Disinfection of Treated Effluent .......................................................................... 2-1
02.2 Septage Receiving Station................................................................................... 2-1
02.3 Leachate Receiving Operations........................................................................... 2-1
02.4 Odor Control........................................................................................................ 2-2
2.5 Miscellaneous Structural/Architectural Improvements ....................................... 2-2
C) CHAPTER 3 - EFFLUENT DISINFECTION ALTERNATIVES
3.1 Existing Conditions .............................................
3.2 Evaluation of Alternatives ..................................
3.3 Conclusions and Recommendations ...................
.............. 3-1
.............. 3-3
.............. 3-5
O CHAPTER 4 - IMPROVEMENTS TO THE ITHACA SEPTAGE RECEIVING
STATION
4.1 Septage Unloading.............................................................................................. 4-2
4.2 Septage Storage.................................................................................................... 4-3
4.3 New Unloading Containment Pad....................................................................... 4-3
4.4 Odor Control........................................................................................................ 4-4
4.5 Conclusions and Recommendations.................................................................... 4-7
O CHAPTER 5 - IMPROVEMENTS TO THE ITHACA LEACHATE RECEIVING
OPERATIONS
5.1 Conclusions and Recommendations.................................................................... 5-3
CHAPTER 6- MISCELLANEOUS IMPROVEMENTS
V61 Roof Leaks at Skylights and Other Locations..................................................... 6-1
V)(: WuNL j rfi.2 Digester Brick Repairs......................................................................................... 6-4
NOW Z/ .3 Concrete Deterioration - Alkali -Silica Reaction .................................................. 6-10
?006 .4 Concrete Deterioration - Cracks and Leaks......................................................... 6-12
6.4 Miscellaneous Structural Repairs........................................................................ 6-14
6.6 Administration Building Space Needs................................................................. 6-16
. .7 Concrete Waterproofing....................................................................................... 6-20
06.8 Digester Cover Guide Repair............................................................................... 6-22
CHAPTER 7 - SUMMARY
6 7.1 Disinfection of Treated Effluent.......................................................................... 7-1
07.2 Septage Receiving Station................................................................................... 7-1
07.3 Leachate Receiving Operations........................................................................... 7-2
4 Miscellaneous Structural/Architectural Improvements ....................................... 7-3
Su MM a 2 .7.5 Implementation.................................................................................................... 7-5
-rp6%.s y.
5011610.1 1
LIST OF ATTACHMENTS
Attachment
I Lakeside Complete Plant Receiving Station
2 Bay Products, Inc. - Odor Control Building
LIST OF TABLES
Table
No.
3-1 Opinion of Cost for Chlorination./Dechlorination Upgrade
0 3-2 Opinion of Cost for UV Disinfection System
4-1 Engineer's Opinion of Probable Cost for Biofilter Odor Control
0 4-2 Engineer's Opinion of Probable Cost for Activated Carbon Odor Control
4-3 Engineer's Opinion of Probable Cost for Septage Receiving Upgrades
6 5-1 Engineer's Opinion of Probable Cost for Leachate Unloading Pad
\t7-1 Cost Summary Table
LIST OF FIGURES
Figure
No.
Q 1-1
Proposed Locations of Work
4-1
Existing Septage Receiving Station
0 4-2
Proposed Septage Receiving Station
4-3
Proposed Odor Control Layout
5-1
Proposed Leachate Unloading Pad
5-2
Proposed Leachate Unloading Pad
6-1
Administration Building - First Floor
6-2
Administration Building - Second Floor
6-3
Partial Tank Plan at Deck Level
5011610.1 �''
CHAPTER 1
INTRODUCTION
As part of a facility -wide improvements project at the Ithaca Area Wastewater Treatment Plant
(IAWWTP), Stearns & Wheler has been retained by the City of Ithaca, the Town of Ithaca, and
the Town of Dryden to perform a study and cost analysis for miscellaneous plant improvements.
The study will:
1. Evaluate alternatives to provide ultraviolet (UV) disinfection of the treated effluent.
Prepare a cost benefit analysis comparing disinfection with UV versus continued use of
chlorin ation/dec hlorination.
2. Evaluate alternatives and develop recommendations for improvements to the existing
septage receiving station, including grit removal and odor control.
3. Evaluate alternatives to provide a leachate receiving facility for accepting both dilute
and higher strength leachate.
4. Evaluate alternatives and develop recommendations and associated costs for the
following structural and architectural issues:
a. Repair leaks in concrete walls and galleries.
b. Repair deck waterproofing on concrete decks above galleries.
C. Repair leaks at skylights, vents, expansion/construction joints, channels, and
distribution boxes.
d. Repair secondary digester floating cover to improve cover travel without
binding,
e. Repair brick on secondary digester.
5011610.1
f. Evaluate building space needs for the treatment plant, including administrative
and operator offices, meeting and training needs, storage for equipment and parts,
recordkeeping, and laboratory.
The areas of work addressed by this report are shown on Figure 1-1.
5011610.1 1-2
CHAPTER
BACKGROUND
2.1 DISINFECTION OF TREATED EFFLUENT
Disinfection of the IAWWTP effluent is provided by adding sodium hypochlorite solution to the
treated plant effluent at the location of the new phosphorus removal system. The effluent is
required to be dechlorinated prior to discharging into Cayuga Lake. Sulfur dioxide gas is
solubilized and injected into the effluent at a remote location in the outfall pipe.
In an effort to reduce chemical cost, usage, and storage of hazardous chemicals, it is desired by
IAWWTP to evaluate options to provide UV disinfection.
2.2 SEPTAGE RECEIVING STATION
The existing septage receiving station at the IAWWTP utilizes a separate building that houses
two septage unloading stations — one is used for grease -containing loads, and one is for non -
grease deliveries. Each of these stations includes a bar screen and is connected to its own
underground rectangular storage tank. The receiving station for the grease -containing material is
currently equipped with a Lakeside Rotomat grit system for the removal of solids present in the
grease -containing shipments. The system is frequently jammed by large rocks that are pumped
out of septage tanks, either as contaminants or as debris from tank deterioration. In addition, the
grit that is inherent to septage has caused extensive damage to pipes and fittings due to erosion.
In Chapter 4, Stearns & Wheler has presented several options that offer improvements to the
current operation and provide grit and rock removal as well as operational flexibility.
2.3 LEACHATE RECEIVING OPERATIONS
The leachate receiving operations at the IAWWTP currently take place at the headworks of the
facility (Influent Building). Tanker trucks which transport leachate from the various landfill
sources are drained directly into the influent stream via a pipe connection located outside of the
Influent Building. This mode of operation can create a shock load to the facility should a high-
5011610.1 2-1
strength leachate be delivered. The current required location of the tanker does not provide spill
containment during leachate unloading operations.
Alternatives to avoid possible process upsets from these high -strength loads and provide spill
containment have been investigated. In particular, the `Tho-Strip" tanks located at the rear of the
facility which were part of the original phosphorus removal process and are no longer used could
provide storage capacity. Stearns & Wheler has worked with the operating personnel to develop
a leachate storage strategy that will provide flexibility and desired containment.
2.4 ODOR CONTROL
Containing offensive odors is an important factor for protecting both the operating personnel as
well as the neighbors surrounding the facility. The existing septage station does not provide
adequate odor control when septage or grease is being unloaded. Stearns & Wheler has
developed several options for controlling odors, which are reported to be primarily municipal
wastewater -based (i.e., hydrogen sulfide and other sulfur compounds). Based on the information
received from the Ithaca facility, it is reported that volatile organic compounds are typically not
present, and therefore will not be addressed as part of the odor control strategies.
2.5 MISCELLANEOUS STRUCTURAI✓ARCHITECTURAL IMPROVEMENTS
Several technical memoranda have been prepared that evaluated existing structural/architectural
issues through the IAWWTP. These memos provide the background of each issue, evaluation of
alternatives, cost analysis, and recommendations for repair. The content of the technical memos
is included in this report.
5011610.1 2-2
f
CHAPTER 3
EFFLUENT DISINFECTION ALTERNATIVES
3.1 EXISTING CONDITIONS
Disinfection is required year-round at the IAWWTP. The existing disinfection system uses
chlorine in the form of liquid sodium hypochlorite. A maximum limit of 0.1 mg/L residual
chlorine is imposed by the State Pollutant Discharge Elimination System (SPDES) permit. In
order to comply with this requirement, the effluent is dechlorinated with sulfur dioxide gas prior
to discharge to the receiving body of water, Cayuga Lake.
The original design of the system utilized chlorine gas for disinfection. The gas was later
replaced with a liquid hypochlorite system. The existing hypochlorite-based chlorination system
consists of two storage tanks and three metering pumps. A 5,600-gallon polyethylene tank serves
as the supply tank, and a 1,300-gallon polyethylene tank serves as a backup that is used during
inspection or maintenance of the larger tank. The storage tanks are housed in a heated building.
The liquid hypochlorite is delivered to the process by diaphragm metering pumps. A single LMI
electronic diaphragm pump provides a base flow. Two flow -paced Wallace & Tiernan
Encore 700 motor -driven diaphragm pumps serve as the duty and the standby. The pumps are
flow paced by an analog signal from the effluent flow meter. These pumps were originally
equipped with DC motors. The DC motors were replaced with AC motors that are speed
controlled by VFDs. Operators have reported problems with the pumps "air binding" and failing
to pump. This is probably due to off gassing from the hypochlorite solution, which is a common
problem in pressure -type hypochlorite feed systems.
The liquid hypochlorite is pumped undiluted through approximately 300 feet of 1/2-inch flexible
tubing and discharged to the effluent box of the tertiary treatment system. There is no diffuser.
However, highly turbulent conditions in the tertiary effluent box are likely to provide adequate
mixing.
Since the plant's SPDES permit imposes a maximum chlorine residual of 0.1 mg/L in the plant
effluent, the treated wastewater is dechlorinated prior to discharge.
5011610.1 3-1
The Dechlorination Building is located on a public golf course near the IAWWTP. Housed
within the building are several 150-lb. cylinders of sulfur dioxide gas, sulfonators, sample
pumps, and instrumentation. This equipment has been in service for approximately 20 years.
The distance to the Dechlorination Building and the sulfur dioxide injection point is
approximately 2,500 feet. The sulfur dioxide gas is injected into a 48-inch effluent pipe through
a small diffuser. A 15-minute contact time at a flow of 23 mgd is provided in the 48-inch pipe,
meeting the minimum contact time required by Ten -State Standards. At higher flows, this
requirement is not met.
The sample pumps draw from a manhole adjacent to the Dechlorination Building. Operators
have reported that the pump suction lines frequently clog with algae and other material. The
sample point is approximately 8 feet downstream of the sulfur dioxide injection point. Dosing of
the sulfur dioxide was originally designed to be controlled based on a chlorine residual analyzer.
Currently, the dose is manually adjusted because the samples have been found not to be
representative due to insufficient mixing. The dechlorination reaction is nearly instantaneous
with adequate mixing. However, insufficient mixing can prevent the reactant from contacting
portions of the bulk fluid. It is likely that sufficient mixing and complete reaction does occur in
the pipe at some point downstream of the existing sample point and prior to discharge at the
outfall.
During conditions of high flow and high lake levels, the manhole adjacent to the building
(Manhole #3) reportedly overflows into the electrical room, creating a safety hazard. The floor
drain in the sulfonator room has reportedly also overflowed.
The switchgear, although located inside the building, is accessible from the roof. The panel
disconnects are locked open due to past incidents of vandals entering from the roof and turning
off the power. The exterior of the building has been vandalized with graffiti.
The Dechlorination Building itself is small. The only egress to the gas storage area is a single
swinging door with a step up. Operators have reported difficulties moving the cumbersome gas
cylinders in and out of the building.
5011610.1 3-2
f
3.2 EVALUATION OF ALTERNATIVES
A. Alternative 1 — Upgrade Existing System. If the existing hypochlorite/sulfur dioxide
system is to continue to be utilized, several upgrades should be made.
The existing hypochlorite storage tanks have recently passed inspection and appear to be in
satisfactory condition; however, they are approaching the end of their expected design life and
replacement should be considered and planned for in the near future.
To alleviate problems with the pumps becoming bound by off gassing of the hypochlorite
solution, the existing pressure feed system (pumps) could be replaced with a vacuum system. In
conjunction with proper piping design, this should eliminate problems associated with air
binding.
At the peak flow of 30 million gallons per day (mgd), the existing chlorine contact time is
approximately 12 minutes. A minimum contact time of 15 minutes is required by Ten -State
Standards. Contact time begins at the hypochlorite injection point and terminates at the sulfur
dioxide injection point. To increase the contact time, the sulfur dioxide injection point could be
relocated farther downstream in the effluent pipe. The existing sulfur dioxide injection point is
approximately 1,000 feet from the lake shore. An additional 1,000 feet will increase contact time
to 15.8 minutes at 30 mgd. Thus, the 15-minute requirement could be met by relocating the
sulfur dioxide injection point to the lake shore. This is best achieved by constructing a new
sulfonation building closer to the lake shore and demolishing the existing building. This
approach will also afford the opportunity to eliminate the problems associated with the existing
sulfonation building. This proposed location is part of the Cornell Wildlife Sanctuary. As such,
additional permits and construction practices may be required.
To improve accessibility and make it easier for the operators to move gas cylinders in and out of
the storage area, the new building would include an overhead door and concrete ramp.
New process equipment including sulfonators, analyzers, and sample pumps would be installed
in the new building. Operators have requested that a sample sink with potable water be installed.
A new sulfur dioxide diffuser would be installed to improve mixing and provide a more
representative sample at the sample point. The sulfur dioxide injection point would be located an
adequate distance upstream of the sample point so a representative sample is provided. The
5011610.1 3-3
sample point would be moved from Manhole #3 to Manhole #4, which is currently located at the
lake shore. Relocation of the sample point would require a modification to the SPDES permit.
Electrical power is currently unavailable at the proposed new sulfonation building location. A
new electrical service would be provided.
The Engineer's opinion of probable cost for these upgrades is presented in Table 3-1.
B. Alternative 2 — Replace Eidsting System With UV Disinfection. UV light is a non -
chemical method of disinfection commonly used in the wastewater treatment industry. UV
disinfection is a physical process in which UV energy, generated by electric lights, is absorbed
by the DNA of microorganisms, causing structural changes in the DNA that prevent the
organisms from reproducing. There is no possibility of chemical residual; therefore, there is no
need for dechlorination.
UV equipment necessary for the plant would likely require a single open channel rated for the
peak flow condition of 30 mgd. Existing flow channels can be utilized and the equipment should
fit into the exiting hydraulic profile. The UV channel would be equipped with three banks of UV
lamps with flow and level controls. Two banks would be required for the peak flow condition
and the third bank would be a standby.
The UV system would be automatically self cleaning. However, periodic manual cleanings are
required in some systems. Bulbs must be replaced on an annual basis. Annual operation and
maintenance cost is estimated to be $87,000 based on average power consumption of 43 kW, a
power cost of $0.16 per kWh, cleaning chemicals, and annual bulb replacements. Labor cost
would be additional and is projected to be 10 to 20 hours per month.
Advantages of the UV system include no bulk chemical handling or storage and no
dechlorination. Removal of the existing chemical system eliminates the possibility of a SPDES
violation for high chlorine residual or low dissolved oxygen caused by an overdose of sulfur
dioxide.
UV disinfection systems can be installed outdoors without a designated building; however, some
storage space for spare parts, replacement bulbs, and cleaning chemicals is required.
5011610.1 3-4
TABLE 3-1
ENGINEER'S OPINION OF PROBABLE COST
FOR CHLORINATION/DECHLORINATION UPGRADE
Vacuum doser (2)
4 i$50,000
Chlorination
Piping
$10,000
Diffuser
$20,000
Storage tank
$20,000
Dechlorination
Regulators (4)
$16,000
Switchovers (2)
$12,000
Pressure switch/alarm
$8,000
Leak detection system (1)
$6,000
Chlorine analyzers (2)
$40,000
Sulfonators (4)
$80,000
Diffuser
$20,000
Sample pumps (2)
$10,000
New building
$80,000
Process piping
$30,000
Plumbing
$25,000
Electrical (including new service)
$180,000
Site work
$80,000
Bypass pumping
$50,000
Demolition of existing building
$20,000
Subtotal
Contingency
$760,000
190,000
Construction Total
Fiscal, Legal, Engineering
$950,000
240,000
PROJECT TOTAL
$1,190,000
5011610.1
In general, practical application of UV disinfection is limited by water quality. UV transmittance
of the water should be a minimum of 65 percent. This should not be an issue at IAW WTP, as the
disinfection system follows a tertiary treatment process (phosphorus removal).
The presence of iron in the water can be a concern in some installations. Iron absorbs UV light
and can reduce the effective dosage of radiation delivered to the organisms. Iron can also cause
increased fouling of the lamp sleeves, which increases maintenance requirements. Iron is added
to the primary and tertiary process for phosphorus removal at IAWWTP. The effects of iron
should be evaluated by testing during design of the system.
In the event of a power outage, the UV disinfection system would need to be powered by the
emergency generator. The existing capacity of the generator should be evaluated during design.
It may be necessary to increase the emergency power available by installing a new emergency
generator.
If UV disinfection is implemented, it will still be necessary to maintain much of the existing
hypochlorite feed system because it is used in other process areas, such as for bulking control.
The dechlorination facility (sulfonation building) would no longer be required and could be
demolished or turned over to the golf course for their use.
The Engineer's opinion of probable cost for a UV disinfection system is presented in Table 3-2.
3.3 CONCLUSIONS AND RECOMMENDATIONS
Although it is not the least cost alternative, many municipalities have made the conversion to UV
disinfection based on the environmental and safety benefits associated with the elimination of
chemical disinfection using hypochlorite and sulfur dioxide. New technology continues to
develop related to disinfection of treated effluent. Since improvements to the disinfection system
are not planned to be implemented for another four years, it is recommended to investigate
additional alternatives at that time. This will allow for the consideration of new technology
currently being developed.
5011610.1 3-5
TABLE 3-2
ENGINEER'S OPINION OF PROBABLE COST
FOR UV DISINFECTION SYSTEM
7-7
,.
UV equipment
$1,000,000
Channel modifications
60,000
Piping
10,000
Electrical
30,000
Generator
50,000
Bypass pumping
30,000
Subtotal
$1,180,000
Contingency
180,000
Construction Total
$1,360,000
Fiscal, Legal, Engineering
270,000
PROJECT TOTAL
$1,630,000
5011610.1
CHAPTER 4
IMPROVEMENTS TO THE ITHACA SEPTAGE RECEIVING STATION
As illustrated in Figure 4-1, the existing septage receiving station consists of two unloading
stations, two underground storage tanks (USTs) with mechanical mixing, and an adjacent
unloading pad, all of which is enclosed by a wooden structure with an entry and exit overhead
door at each end of the unloading pad.
The waste hauling contractors are responsible for signing in when entering the facility, as well as
providing a pH sample of the septage prior to its transfer into the treatment system The haulers
open the doors of the septage building, drive onto the unloading pad, and hook up to the
unloading stations using the quick -connects provided. Tracking and recording of septage
volumes and origin is on an "honor system" basis. In addition, the drivers are relied upon to
close the doors during unloading of the septage and before leaving the facility.
After meeting with the IAWWTP operating personnel and discussing the possible improvements
to the septage station, the primary concern is for the safety of the haulers and WWTP operating
personnel during septage transfer activities. Additional concerns involve the operational
efficiency of the unloading procedures and equipment, and the limited storage capacity. Current
operational issues discussed include:
1. The large solids (rocks) that clog the Rotomat during grease unloading.
2. The erosive grit that is present in all septage loads and the damage it causes to the
piping systems.
3. Release of offensive odors during transfer from the septage trucks to the bar
screens/storage tanks.
4. The tracking and recordkeeping associated with septage volumes received on a daily
basis.
5011610.1 4-1
Stearns & Wheler has identified several improvements (detailed in the following sections) that
would offer the IAWWTP a better performing septage handling process and an improved method
for recordkeeping and invoicing.
4.1 SEPTAGE UNLOADING
The IAWWTP has been concerned with inorganic solids when accepting and conveying septage.
These solids range from large rocks that settle in the storage tanks or jam the Rotomat during
unloading, to the smaller solids or "grit" that is passable by their pumps and conveyance
systems, but slowly erodes the conveyance piping material. Steams & Wheler has identified an
unloading system that is designed to remove unwanted grit and rocks from septage before it is
transferred into the storage tanks. This system is illustrated in Figure 4-2 and Attachment No. 1.
The Lakeside Raptor Septage Complete System is a packaged septage handling system. The
primary advantage that this system offers is that it can be configured to remove grit, rocks, and
grease, depending on the optional equipment specified. The standard configuration for a Raptor
Complete System would include a stainless steel tank, fine screen, lower spray wash system (for
washing screenings), horizontal grit screw, grit dewatering screw. A coarse bar rack will be
provided to screen large objects prior to entering the septage unit. A grease collector and grease
pump will be provided as part of the standard unit for separation of grease from the septage
deliveries. The solids are consolidated along the grit screw and washed before being deposited
into adjacent hoppers for their collection. The entire system is automated and comes equipped
with the necessary instrumentation for level and flow control.
There are several systems similar to this by other manufacturers; however, this model contains
options that could be desirable for the Ithaca installation. In particular, the system can be
equipped with an optional bagging system, heat tracing (if needed), and an automated data
acquisition system. This data system utilizes a PLC controller that monitors the packaged unit
and manages the septage hauler company information and can generate invoices and receipts.
In discussions with IAWWTP personnel, Steams & Wheler has confirmed that solids (rocks and
grit) are the primary constituents that should be removed before transfer to the septage storage
tanks. Currently, grease is not an operational issue and would be transferred along with the
septage wastewater without removal. The data management system would be of benefit to the
plant's operations.
5011610.1 4-2
4.2 SEPTAGE STORAGE
Septage is currently stored in one or both of the two concrete USTs illustrated in Figure 4-1.
Each existing tank is estimated to contain approximately 19,500 gallons of septage. IAWWTP
personnel have expressed their interest in building more capacity and redundancy into their
septage storage. This may allow them to increase their septage business and offer flexibility
during high hydraulic loading events. Stearns & Wheler recommends the addition of a third
19,500-gallon concrete UST identical to those already present. IAWWTP personnel have not
indicated any operational issues with this configuration, and the addition of a third tank
alongside the existing units would offer a total storage capacity of approximately 58,500 gallons.
The new tank would be equipped with mechanical mixing similar to the two existing units. This
tank will either be connected directly to a new odor control system or passively via a whole -
building system.
4.3 NEW UNLOADING CONTAINMENT PAD
The two septage receiving systems proposed in this study can be installed directly in front of the
tanks, but must be recessed below grade to allow gravity flow from the tanker truck to the
packaged system and out to the USTs. This would necessitate the design and installation of a
new unloading pad. IAWWTP personnel have requested that Stearns & Wheler size this pad to
allow one large (80-foot) tanker or two standard septage trucks end to end. The new UST and
resized unloading pad will create an increased footprint and require a larger exterior structure to
enclose the septage operations. The configuration of the unloading pad would facilitate the direct
connection of the two types of tanker trucks listed above. Each vehicle will have easy access to a
quick -connect fitting and a data acquisition/management panel. The inflow of septage to the
packaged system will be enclosed and airtight, reducing odorous emissions during the transfer
process.
The unloading station will include upgraded lighting within the building, and the concrete
unloading pad will have a non-skid finish to help prevent possible slips and falls from septage
spills or wash water. A new safety shower/eyewash station will be located in the immediate area
of the septage quick -connect panel.
The building itself will likely be a pre-engineered steel structure, epoxy coated for enhanced
corrosion protection. The roof will be reinforced for the regional snow and wind loading. Similar
5011610.1 4-3
to the existing structure, the new building would be oriented such that septage haulers will be
able to drive in, unload, and drive straight out of the unloading area. The unloading pad would be
sized to handle one truck with the overhead doors closed or two trucks end to end with the doors
open. Depending on the odor control configuration, the roll -up doors will remain open (or
closed) during unloading operations. This will depend on whether the odor control system
captures all the interior air or only the headspace of the storage tanks and unloading package
systems. In addition to the new unloading pad, an odor control system may be housed within this
new footprint (if a biofilter is selected). The required space for an odor control system is
discussed in Section 4.4.
4.4 ODOR CONTROL
The presence of offensive odors during the septage unloading process is not unique to the
IAWWTP. The U.S. Environmental Protection Agency and various wastewater industry societies
have published guidance documents on the more effective odor control technologies used today.
A. Alternative 1 - Biofilter Option. Following a site visit on June 22, 2006, it was
determined that the proposed leachate storage tanks will be connected to the septage odor control
system as well. Stearns & Wheler has identified two principal technologies for the control of
odor emission at the septage/leachate facilities: a small footprint stackable biofilter and a radial
flow carbon adsorption system. Both technologies have been used successfully in the industry
and would provide acceptable odor control performance.
The LS-100 biofilter, manufactured by Biocube, LLC, is a stackable configuration utilizing a
proprietary mix of organic media. To optimize bacterial growth, the biofilter media is kept damp
and within a specific temperature range by locating the biofilter indoors in a climate -controlled
room. The bacteria (likely to be present in both the solid and liquid phases) utilize the organic
matter within the air stream for food and energy. This is similar to the bacterial breakdown of
organics utilized by the main WWTP process. However, this odor control system relies upon
mass transfer from the air phase (incoming air) to the liquid phase (moist media) to achieve odor
removal. In addition, a natural carbon source is provided in the media which absorbs odors
directly without the need for mass transport between the solid and liquid phases. The biofilter
media is self-sustaining and should not require replacement. Periodic inspections by the vendor
would be required to ensure proper media growth.
5011610.1 4-4
The LS-100 utilizes a proprietary media that allows for a smaller unit footprint. In addition, the
stackable nature of the unit allows an increase in odor control capacity by stacking on additional
media trays. This is a significant improvement over the earlier biofilter designs that required a
large footprint and had questionable reliability. Because the biofilter can be sensitive to seasonal
changes in temperature, the system would likely be housed indoors, perhaps in the new septage
building. Exact location requirements would be confirmed with the vendor.
In the event of media loss within the biofilter, fresh media would be replaced by the
manufacturer.
The Engineer's opinion of probable cost for the biofilter option is presented in Table 4-1.
B. Alternative 2 - Activated Carbon Filter Option. An alternative odor control technology
to the biofilter is to use activated carbon. This is an established odor control technology with a
long history of reliable operation for removing organics from both liquid and vapor phases. On a
microscopic level, the carbon surface in an odor control system is very porous and highly
energized. These energized sites have a preferential attraction to (odor -causing) organic particles
in the air. Once in contact with these odorous compounds, the organic matter adsorbs to the
activated carbon and is removed from the air stream.
Several carbon bed configurations exist within the odor control industry, ranging from simple
plug -flow designs (once -through canisters) to elaborate cartridge banks with multiple ports.
From an efficiency standpoint, a radial flow design might be considered at the IAW tFM. The
radial carbon beds are situated within a cylindrical canister. The air flow is drawn through the
middle (center) of the cylinder and forced radially across the media to the outer wall of the
canister where it is withdrawn via a blower system. This is similar to the system included in
Attachment No. 2. This is the Bay Products, Hawk radial odor control canister activated carbon
odor control system. This radial design increases the surface area of carbon that comes in contact
with the air flow. The increased amount (surface area) of carbon contacted usually results in
increased removal efficiency. Sampling of the off gases is recommended before choosing and
optimizing a specific odor control technology.
Both systems would be sized for a minimum of six air changes per hour. The sizing of these
units depends on the intended configuration of the system and the size (volume) of the air space
to be ventilated to the odor control system. Stearns & Wheler has developed two control
5011610.1 4-5
TABLE 4-1
ENGINEER'S OPINION OF PROBABLE COST
FOR BIOFILTER ODOR CONTROL
Biocube biofilter system
$150,000
Excavation and backfilling
12,000
Cast -in -place concrete pad
10,000
Site grading
5,000
Ductwork
50,000
Mechanical installation
8,000
Electrical installation
10,000
Subtotal
Contingency
$245,000
36,000
Construction Total
Fiscal, Legal, Engineering
$281,000
56,000
PROJECT TOTAL
$337,000
5011610.1
configuration options, described below. During the June 22, 2006 site visit, IAWWTP operating
personnel expressed concern about the septage haulers following instructions during unloading
operations. The initial operation of the septage unloading station required the drivers to close the
roll -up doors prior to transferring any of their truck's contents. It is during the transfer of septage
that some of the highest peaks in odor emissions are typically detected. W WTP personnel agreed
this would be the optimum method to capture all odor generated in the septage building;
however, the drivers may forget to close the doors or shut off their engines during unloading
activities.
This concern led Stearns & Wheler to localize the odor control to specific sources. These would
include the two Lakeside septage packaged systems, and the three septage storage tanks. The
Lakeside systems are airtight by design. In fact, the manufacturer offers integrated odor control
as an option to the complete system. The vents would be connected to the biofilter or carbon
units. The three septage storage tank vents would be connected as well. The entire septage
building would also be connected to the odor control system with a large vent hood located over
the unloading pad.
Additional connections to the odor control system include the two Pho-strip tanks proposed as
daily storage for the landfill leachate (discussed in Chapter 5). The tanks will likely be used as a
gravity -fed system, utilizing only a bottom fraction of the overall volume (primarily the bottom
cones). The headspace within each vessel will be odor controlled at approximately six air
changes per hour. Another configuration option the IAWWTP may consider is to install two
separate smaller odor control systems -- one for the septage building and one for the leachate
storage tanks. Preliminary quotations indicate that the single, larger odor control system option
would be less expensive than the two smaller systems. A conceptual layout for a single odor
control system is provided in Figure 4-3.
Based on our on -site discussions with IAWWTP personnel, Stearns & Wheler has included the
carbon system as the recommended technology for odor control in the opinion of probable costs
in this study phase. IAWWTP personnel would like to learn more about the biofilter, but believe
the biofilter would require excessive maintenance and might be susceptible to environmental
impacts such as temperature and loss of humidity.
The Engineer's opinion of probable cost for the activated carbon option is presented in
Table 4-2.
5011610.1 46
4.5 CONCLUSIONS AND RECOMMENDATIONS
The current operational problems with rocks and large solids can be mitigated by installing two
new septage unloading stations similar to the Lakeside Raptor. These systems screen out large
solids and rinse them off for disposal. A third storage tank would provide operational flexibility
and increased receiving capacity. This translates to a possible increase in revenue for the
IAW WTP.
The existing septage structure is showing signs of age and would be too small to house the two
new unloading stations and associated concrete pad. A new pre-engineered steel structure is
recommended. The Engineer's opinion of probable cost for these upgrades is presented in
Table 4-3.
Activated carbon odor control for the new receiving systems and leachate storage could be
provided by a single system. Further discussions with the carbon manufacturers would be
required to optimize the carbon type.
5011610.1 4-7
TABLE 4-2
ENGINEER'S OPINION OF PROBABLE COST
FOR ACTIVATED CARBON ODOR CONTROL
Bay Products activated carbon canister (2)
$220,000
Excavation and backfilling
12,000
Cast -in -place concrete pad
10,000
Site grading
5,000
Ductwork
50,000
Mechanical installation
8,000
Electrical installation
10,000
Subtotal
Contingency
$315,000
50,000
Construction Total
Fiscal, Legal, Engineering
$375,000
75,000
PROJECT TOTAL
$450,000
5011610.1
TABLE 4-3
ENGINEER'S OPINION OF PROBABLE COST
FOR SEPTAGE RECEIVING UPGRADES
Septage receiving equipment
Lakeside complete plant (2)
$500,000
Keypad access and flow measurement (2)
58,000
Automated data acquisition system (1)
19,000
Mechanical installation
40,000
Electrical installation
15,000
Additional septage tank I
Building upgrades
Precast concrete tank
15,000
Paddle mixer
2,000
Piping
Demolish existing structure
5,000
35,000
Site grading/reroute plant roadway
25,000
Excavation and backfilling
16,000
Cast -in -place concrete
67,000
Butler -type structure
150,000
Roll -up doors (2)
12,000
Lighting
8,000
Underground piping
8,000
Mechanical installation
10,000
Electrical installation
10,000
Subtotal
Contingency
Construction Total
Fiscal, Legal, Engineering
PROJECT TOTAL
$995,000
15,000
$1,,000 230
230,000
$1,400,000
5011610.1
CHAPTER 5
IMPROVEMENTS TO THE ITHACA LEACHATE RECEIVING OPERATIONS
The current method for receiving leachate at the IAWWTP includes a direct connection to the
headworks (Influent Building) of the treatment plant. The WWTP receives numerous tanker
loads (7,500 to 8,500 gallons per tanker) each day. This method of transferring the leachate into
the WWTP does not permit storage or allow for a reduced rate of introduction into the treatment
process. This can be problematic if the leacbate is out of specifications, or if the WWTP is
experiencing a high hydraulic loading event (heavy rain, etc). IAWWTP personnel have
indicated they would like the ability to store the leachate as well as an improved unloading area
at the Influent Building. Leachate containment and personnel safety were the primary concerns at
this location.
As requested, Stearns & Wheler has developed a two-part configuration for leachate receiving.
The initial part of the design includes a new unloading pad to be located at the southwest corner
of the Influent Building (see Figure 5-1 for more details). The pad will contain a spill and direct
it to the plant influent. The pad will not provide storage of leachate should a spill occur.
A quick -connect panel will be provided adjacent to the unloading pad, where the waste haulers
can connect to the headworks of the plant. A safety shower/eyewash station will be installed
within close proximity of the quick -connect panel. This system will be specified for year-round
exterior service, providing the waste haulers with a means of emergency washing in the case of a
splash incident involving the leachate during transfer.
A PLC -based automatic datalogging panel will be provided for the waste hauler'to enter a PIN
number and record the leachate transfer prior to connection and transfer of the tanker contents.
This panel will be interlocked with an in -line flow meter and shutoff valves that will only open
after the correct PIN information has been entered. The flow meter will measure and totalize the
volumes transferred to the Ithaca system. This datalogging system will be the same/similar to
that used at the septage building to allow for direct integration and compatibility. This
management system will provide total invoice and waste receipt capabilities, as well as annual
totalizing.
5011610.1 5-1
The second design element for the leachate improvements includes the use of one of the existing
Pho-strip tanks for the daily storage of leachate. This will allow the plant to gradually feed the
leachate into the process stream during non -peak periods to avoid potential process upsets due to
high -strength leachate concentrations shocking the treatment system. As illustrated in Figure 5-2,
this storage will be made available by one of the existing Pho-strip tanks located to the north of
the main treatment facility. These open -top vessels were initially used as part of a phosphorus
removal system, but have not been in service for several years. This phosphorus removal system
has been abandoned and will no longer be used. These existing tanks were identified by WWTP
personnel as available for leachate storage. Each tank is sized at approximately 425,000 gallons.
However, the proposed leachate system will only use a portion of one of the existing tanks for
leachate storage.
To maximize the volume of leachate storage in one tank, a raised unloading pad will be required,
as shown on Figure 5-2. This pad will allow for gravity transfer of the tank contents, eliminating
the need for a new wet well and pump station. It will also be sized to contain the contents of the
tanker truck should a spill occur. The pad will be sloped to a trench drain that will collect any
spillage. The trench drain will discharge directly to a process drain within the gallery area. By
raising the unloading pad, the maximum volume of leachate that can be stored in one tank is
approximately 104,000 gallons. On average, this will provide approximately three days' worth of
leachate storage.
To allow for conversion of the existing tank to leachate storage, all internal tank components,
piping, and catwalks that were part of the former phosphorus removal system will be removed
and a new tank cover will be added to contain odors generated by the leachate as well as prevent
the buildup of rain water within the tank. Due to the corrosive nature of the leachate, the existing
concrete tank would need to be lined with a chemical -resistant coating. A new pipe penetration
on the tank will be installed outside which will be piped directly to the new unloading pad. This
connection will drain the tanker truck directly into the converted tank via gravity.
Transfer of leachate within the tank will be achieved via a bottom drain located at the center of
the conical bottom which is connected to the existing Pho-strip pumps. Under normal operation,
the plant will utilize the existing Pho-strip pumps to convey the leachate to Distribution Box
No. 3. From Distribution Box No. 3, the leachate will enter the plant's aeration basin for
treatment. Utilizing the existing pumping will allow for gradual draining of the tank during low
5011610.1 5-2
flow periods so as to not shock the treatment system with a high concentration of leachate. The
existing pumps will be rebuilt using updated seals and hardware as part of this design.
The odor control system discussed above will be connected to the two leachate storage tanks.
The odor control units will be sized to maintain the septage odor control as well as sufficient
ventilation to account for the available headspace within the leachate storage tank.
With these two design elements in place, the IAWWTP will have an improved unloading station
at the plant headworks, as well as new leachate storage capabilities. The aeration and odor
control systems will provide a method to control odors should the leachate require storage over
an extended period. Both of the new systems will provide:
1. Containment of the tanker contents (should a spill occur).
2. Safety Measures — Eyewash and safety shower for the waste haulers and IAWWTP
operating personnel.
3. Automated data management to allow WWTP personnel to track and invoice the
waste hauling contractors more efficiently
5.1 CONCLUSIONS AND RECOMMENDATIONS
It is recommended that the existing unloading area for leachate tankers can be protected from
spills by the installation of a concrete unloading pad. The IAWWTP can further optimize this
operation by installing a PLC -based datalogging panel to produce invoices and track leachate
inventories. The unloading area will allow space for two trucks side by side. During design of the
leachate unloading facilities, the ventilation system in the Influent Building will be evaluated and
improved if necessary. Connection of the Influent Building ventilation system to the septage
odor control system will be evaluated for feasibility and need.
It is not recommended at this time to convert the existing Pho-strip tank to a leachate storage
tank that would provide the IAWWTP with sufficient storage and flexibility. This conversion can
be performed in the future if it is determined to be required to improve plant performance.
The Engineer's opinion of probable cost for these upgrades is presented in Table 5-1.
5011610.1 5-3
TABLE 5-I
ENGINEER'S OPINION OF PROBABLE COST
FOR LEACHATE UNLOADING PAD
5011610.1
CHAPTER 6
MISCELLANEOUS IMPROVEMENTS
6.1 ROOF LEAKS AT SKYLIGHTS AND OTHER LOCATIONS
A. Background.
1. Several roof leaks are evident at the plant, notably at skylights and at the thickener
tank perimeters.
2. While there are skylights and other roof openings situated in both the concrete -roofed
galleries and the portions of the building with a synthetic rubber membrane (EPDM)
roof, it is the openings in the EPDM roof that have the most pronounced leaks.
B. Evaluation of Existing Facilities.
1. The roofing system over the Thickener Area, Solids Handling Building, and Digester
Building was installed at the time the building was originally constructed, about
20 years ago. The existing system is typically described as an "inverted roof
membrane assembly" (IRMA), and starts with an EPDM roof membrane placed
directly on the structural deck. The membrane is then covered with rigid insulation
boards, which are covered by stone ballast. A fabric is placed between the ballast and
insulation. The ballast and insulation boards protect the membrane from exposure to
solar and impact damage, except where the membrane is turned up to form flashings
at skylight curbs, walls adjacent to the roof, or other interruptions in the roof surface.
2. The skylights appear to be leaking at the curb flashings and not leaking due to a
failure in the skylights' glazing -to -frame seal. The curb flashings "rubber" shows
some fading and thin cracks. The upper part of the curb flashings is exposed to
sunlight, and the part adjacent to the stone ballast is not fully separated from the stone
as the protection fabric does not provide full coverage in some locations.
5011610.1 6-1
3. Roof drains are located within just a few feet of the skylights, and insulation boards
are fitted very tightly to the screens surrounding the drains, possibly preventing water
from moving quickly into the drains. Water may tend to build up temporarily in the
vicinity of the drains, possibly contributing to the skylights leaking at the curb
flashing membrane.
4. The top edge of the skylight flashing membrane terminates against the outside of the
skylight frame and is connected to the skylight frame with a sealant. While this detail
was consistent with accepted practice at the time the plant was constructed, it is
typical now for the skylight frame to overhang and protect the top edge of the
flashing, or to wrap the flashing over the top of the curb, and then set the skylight on
top of the assembly. Either alternative approach avoids a sealant joint that is exposed
to weather.
C. Evaluation of Alternatives.
1. The minimum alternative is to rebuild flashings and modify the details at the roof
drains:
a. Remove sufficient stone ballast and insulation to gain access to flashings at roof
drains, roof curbs, roof perimeters, and roof -wall intersections.
b. Cut back existing flashings.
C. Clean and prime the existing membrane, then adhere new flashings.
d. Terminate new flashings over the tops of skylight curbs.
e. Clean roof drains, remove drain cover and clamp in new flashings, then trim
insulation back from the drain a few inches to allow better water flow.
f. Reinstall insulation, fabric, and stone ballast.
5011610.1 6-2
2. The more comprehensive alternative would be to replace the roof system:
a. Remove existing ballast, insulation, flashings, and membrane.
b. Install a new roofing system consisting of a vapor retarder, rigid insulation, and
a fully -adhered EPDM membrane as the top surface.
C. Install EPDM walk pads along likely paths of travel on the roof.
D. Recommendations.
1. Perimeter conditions, roof penetration flashings, and roof drain installation are the
most labor intensive parts of any roofing project. The "minimum alternative" of
rebuilding flashings and modifying roof details, if performed throughout the roofed
area, would encompass approximately 18 to 22 percent of the expense of a complete
re -roofing job.
2. The roof membrane is past its 15-year warranty, and generally 0.060 EPDM
membranes have about a 20-year useful life expectancy. If the rebuild and repair
approach is taken, there is no guarantee that the remaining sections of roof membrane
will last beyond the next few years.
3. A new roof system with the membrane on top would provide easier access for repair
and inspection of the roof membrane.
4. Repairing and rebuilding perimeter conditions, roof penetration flashings, and roof
drain installations over the entire roof area would have an approximate cost of
$75,000. Rebuilding flashings and modifying roof drains only in known problem
areas could be accomplished for somewhat less. Repair of the existing roof system is
not recommended. Total roof system replacement would cost approximately
$400,000 in today's market.
5. Stearns & Wheler recommends that plans be made for total roof replacement within
the next five years.
5011610.1
6-3
u
6.2 DIGESTER BRICK REPAIRS
A. Background. At some point in the last few years, probably less than five years ago, plant
personnel noticed that the brick veneer that covers the digester tanks was out of plumb in
several locations, and that some individual bricks at the top of the wall showed evidence of
spalling.
B. Evaluation of Existing Facilities.
1. The digester tanks are just under ninety feet in diameter. Roughly 58 percent of the
tank perimeters are covered with rigid insulation under a nominal 4-inch clay brick
veneer. From top to bottom the brick measures 30 feet 8 inches in height, resulting in
a total area of brick veneer of approximately 10,028 square feet. Vertical expansion
joints are installed in the brick at approximately 29 feet from center to center.
2. The brick veneer was examined from the exterior of the tanks, both from on the
ground and from the vantage point of a truck -mounted boom lift. It was observed that
entire sections of brick between expansion joints lean outward from the top of the
wall as much one inch, while the veneer at the base of the walls has remained in
place. See Photograph A.
3. Near the top of the brick facing, there are some bricks with cracked or spalled faces.
In most locations there is no appreciable space between the top of the bricks and the
overhanging concrete tank rim, and a fillet of sealant has been applied where the
brick meets the concrete. See Photograph B.
5011610.1 6-4
4. S&W Services was retained to remove the upper portion of one of the brick sections.
This was done both to remove the potential danger from that section of the brick
falling, and to better ascertain the condition of the brick veneer and details of the
existing installation. Steams & Wheler's architect, Steve Blais, was on site to observe
the brick removal and examine the bricks and veneer ties. Observations:
a. Approximately half of the galvanized corrugated brick ties were too short to
penetrate more than a fraction of an inch into the brick, and were found to be
disengaged from the demolished pieces of brick. The dovetail ends of many of
the other, full-length, ties had been pulled out of the vertical slots cast in the
concrete.
b. There was no obvious evidence of substantial ice or water accumulation behind
the bricks except for some rust on the veneer ties where they join the inside face
of the brick. The inspection was conducted in temperatures well above freezing,
so the possibility of ice build up cannot be discounted.
C. There were some areas where mortar drippings could have impaired drainage of
water from the wall cavity.
d. The brick sections, although leaning outward in a very visible manner, have
remained essentially intact: the mortar bonds between the bricks in each section
have held the bricks together, even though the section of brick veneer as a
whole has not maintained sufficient anchorage to the Digester Tank behind.
C. Assessment of Causes.
1. We do not believe that we can definitively assign a cause of differential movement
between the brick veneer and the concrete tanks. Possible causes include:
a. Thermal expansion of the brick veneer, causing the brick veneer to bow outward
in an are, increasing the distance between brick and concrete, and straining the
veneer ties.
5011610.1
MI
b. Thermal expansion and contraction of the concrete digester tanks, resulting in a
progressive weakening of the bonds between the too -short veneer ties and
ultimately placing excessive loads on the remaining full-length ties.
C. Build-up of ice behind the brick, pushing the brick outward and resulting in
veneer tie failure.
2. Spalling and cracking of bricks at the top of the wall can be explained by lack of
space for bricks to expand vertically, and by freeze -thaw action when the upper bricks
became exposed to water penetration after the bricks moved away from the tank.
D. Evaluation of Alternatives.
All of the possible causes considered above involve differential movement between
the brick and the concrete tanks. Water penetration or ice build-up are potential
detriments to any cladding system Therefore, any proposed solution should:
a. Prevent water from entering at the top of the cladding system
b. Allow drainage of water from the bottom of the cladding system.
C. Allow the cladding system to move independently of the concrete tanks behind,
without strain on the anchoring system
d. Allow for thermal expansion and contraction, both horizontally and vertically,
without excessively confining the cladding material.
2. Alternatives Considered
a. Alternative A. Remove all of the existing brick veneer and insulation from the
digester tanks, and apply insulation directly to the tanks. Sprayed polyurethane
was considered but rejected because of the extremely irregular finished
appearance produced by this method. Instead, an exterior insulation and finish
system could be installed which would have a uniform thickness and finish.
Expanded polystyrene insulation boards would be secured to the concrete with
5011610.1 6-6
stainless steel screws with large counter -sunk plastic disc washers, and the
system would receive a polymer -modified stucco finish. The system would be
subdivided by expansion joint reveals to relieve any thermal stress. This process
could most likely be completed in four to six weeks. Construction and design
costs are estimated at $260,000.
b. Alternative B. Remove the existing brick veneer and replace it with new brick
veneer detailed with more closely spaced veneer ties, more expansion joints,
additional weeps, and a soft joint at the top of the wall. After acquisition of the
bricks (which can have up to a 16-week lead time) this process might take up to
two or three months to complete. Construction and design costs are estimated at
$340,000.
C. Alternative C. Manipulate the existing brick back into proper alignment, install
new and more closely spaced anchors through the brick to the tank wall behind,
saw -cut some additional expansion joints, provide additional weeps, and saw -
cut a soft joint at the top of the wall. Install new brick in the area where bricks
have been removed. After the lead time required to obtain infill bricks to match
the existing bricks, this process could take up to two or three months to
complete. Construction and design costs are estimated at $190,000.
d. Alternative D. Remove all of the existing brick from the tanks, but leave the
insulation in place. Apply horizontal aluminum "E' furring around the tanks,
and then install pre -finished ribbed aluminum panels in a vertical orientation
over the furring. Provide vertical expansion joints as required. After the lead
time required to obtain the metal panels, construction duration could be as short
as four to six weeks. Construction and design costs are estimated at $130,000.
All of the alternatives described above would include a drip flashing and sealants applied
at the top of wall to minimize water entry behind the cladding, and appropriate flashings
and weeps at the bottom of the wall to facilitate drainage of any accumulated moisture.
Each alternative also includes provisions for insulating the tank to maintain the digester
temperatures required for the anaerobic digestion process.
5011610.1
6-7
i.'
EXISTING CONCRETE'
SEAIAMT OVER FOW
SILL SEA
ALUMINUM DRIPS
SEALANT DYER
COMPRESSIBLE
FILLER_
—
GIADDING SYSTEM
INSUUTIDN
Illustration of Drip Flashing (Not to Scale)
owew EN6n
SATE EMT
ROWMNS Y.ESR
1 _-I DRYAT BASE EMT
ti
Y i INSMARD4
AD BOARD
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B"T WATER-TESRT A
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Illustration of Alternative A: Exterior Insulation and Finish System (EIFS
(The substrate would be the concrete tank at IAW WTP)
(Various metal panel profiles are available)
5011610.1 6-8
E. Recommendations.
Alternative A (remove the bricks and cover the tanks with an exterior insulation and
finish system) would be less expensive than total brick replacement, and would
require a relatively short construction cycle. With a regular joint layout and judicious
color selection, the stucco -like finished appearance should be very acceptable to the
public. The IAWWTP should select Alternative A if full brick replacement is deemed
too expensive and the stucco -like finish is preferred over the metal panels described
in Alternative D.
2. Alternative B (replace existing brick with new brick veneer) is the most expensive
option. With respect to appearance, this is option is likely to have the greatest public
acceptance.
3. Alternative C may require some field-testing of methods for aligning the existing
brick and selection of the best type of veneer anchor. Because much of the brick
veneer and insulation material would be left in place, there is a significant savings
when compared to Alternative B. However, we have some concern that the available
post -installed veneer tie systems create a rigid connection between the veneer and the
backup material, therefore compromising one of the cladding system criteria.
Providing additional weeps may improve drainage conditions, but this alternative
would not remove any mortar drop accumulations that may be present at various
locations behind the brick. At close range, the post -installed veneer ties would be
visible as dots spaces 16-inch center -to -center in both directions. The original
appearance of the tanks would be mostly restored with Alternative C, but this
approach may not fully address the problems with the existing brick veneer.
4. Alternative D is the most economical solution, and would provide a neat appearance.
The metal panel cladding system, when appropriately detailed, will meet all of the
proposed system performance criteria. The IAWWTP should select Alternative D if
full brick replacement is deemed too expensive, lowest cost is a dominant factor, or
the appearance of metal panels is preferred over the stucco -like finish proposed in
Alternative A.
5011610.1
M.
6.3 CONCRETE DETERIORATION — ALKALI -SILICA REACTION
A. Background.
1. Based upon visual observation which is supported by a report by Novelli
Engineering, dated September 15, 2003, most of the concrete exposed to weather at
the Ithaca Area WWTP is undergoing concrete deterioration caused by Alkali -Silica
Reaction (ASR). Briefly, ASR is the formation of an expansive hygroscopic gel
around the aggregates used to make the concrete. As water and air penetrate the
concrete, the aggregates used on this project have reacted with the Portland cement to
form the expansive gel.
2. While ASR deterioration is not common in the Central New York area, a discussion
with Dr. Kenneth Hover, P.E., Professor, Structural Engineering, of Cornell
University reveals that there are, however, four or five other projects around the
Ithaca area that exhibit this condition. If left untreated, the gel formation continues to
grow and expand. The expansive forces have cracked the concrete and in the long
term, will disintegrate the concrete.
B. Evaluation of Existing Facilities. After review of the Novelli report, a site visit was
conducted on May 12, 2006 to quantify the extent of damage. In summary, all concrete
exposed to weather, in a wet/dry condition, shows signs of early ASR deterioration. The
condition is not advanced to the point of spalling or loss of concrete.
C. Evaluation of Altematives. Options for post -construction treatment are limited.
1. One option is, of course, to replace damaged concrete. This would obviously be an
excessive cost, and not a feasible solution given the early stages of current
deterioration.
2. Two strategies have been used to mitigate ASR. One is to keep the concrete dry by
limiting the ingress of water into the concrete. This approach is very difficult and
usually proves impractical, especially with outdoor, water containment structures.
The second most recognized choice to mitigate ASR is to use lithium compounds
which have been found to be effective at halting the ASR. Lithium forms a gel that is
5011610.1 6-10
non -expansive, and does not absorb water. The FMC Corporation and the Strategic
Highway Research Program have been conducting tests and research for over
50 years on ASR mitigation. Their research with the use of lithium is recognized as
the most promising approach to ASR mitigation. Successful lithium treatment will
alter the ASR composition by counteracting the alkali in the concrete to make it less
expansive. Further ASR expansion will be significantly decreased which will
lengthen the life of the structure.
On horizontal surfaces, lithium can be spray applied or ponded to soak into the
concrete. Vertical surfaces are more difficult to treat. The spray application process
can work, but will require several applications to achieve penetration. Other methods
are to use a vacuum impregnation or an electrochemical extraction. These more
sophisticated techniques are more expensive.
D. Conclusion. Concrete made with aggregates susceptible to ASR reaction typically starts to
show deterioration in 5 to 15 years after concrete placement. The IAWWTP is now just
over 20 years old and shows widespread, early stages of ASR deterioration. If left
unattended, the ASR expansion will continue and result in enlargement of the cracks,
concrete surface "pop outs," intrusion of more water, and even faster deterioration aided by
freeze/thaw activity.
Treatment with lithium will not repair existing cracking. The lithium will also not cover up
the cracks aesthetically. With adequate application and product penetration, the lithium will
slow down or stop continued ASR deterioration. Application to a horizontal surface is easy
to treat, but the problems at the Ithaca facility are mostly on vertical wall surfaces. These
will require several applications to achieve adequate penetration.
By treating the ASR damaged concrete, continued deterioration will be slowed, thus
prolonging the useful life of the structure. Once treated with lithium, future re -application
will not be required. If left untreated, the concrete will continue to degrade.
E. Recommendations.
1. As a minimum, treat all exterior exposed to view concrete with two or three
applications of a lithium nitrate compound. This will not change the appearance of the
5011610.1 6-11
existing cracked conditions, but will prevent or at least slow down continued
deterioration.
2. A further option will be to treat the tank interior top of wall areas. This would provide
the most complete solution to prevent or slow down deterioration.
F. Probable Construction Costs.
• Exterior exposed to view wall areas
• Interior exposed to view wall areas
18,000 SF
$ 50,000
19,500 SF
80,000
Subtotal
$130,000
25% Contingency
30 000
TOTAL
$160,000
6.4 CONCRETE DETERIORATION— CRACKS AND LEAKS
A. Background. The IAWWTP is an above grade, pile supported concrete structure.
Generally, the structure is made up of a series of concrete process wastewater and sludge
tanks, circular and rectangular, interconnected by flow channels and separated by
pipe/pump galleries. Numerous cracks have developed within the concrete walls and are
leaking.
B. Evaluation of Existing Facilities.
I. A preliminary investigation was conducted by Novelli Engineering with results
presented in a report dated September 15, 2003. Stearns & Wheler completed a site
visit on May 12, 2006 to further quantify the extent of cracking and leakage. Several
types of cracks were identified:
• Exterior — vertical and diagonal
• Interior — vertical and horizontal
• Active and non -active leakage
• Most cracks have calcium deposits leaching out of crack
• Some leakage is through construction or expansion joints, mostly at distribution
and/or scum boxes
5011610.1 6-12
2. In general, these cracks are a result of means and methods of construction and appear
to be either drying shrinkage cracks, cold joints, or a result of poor consolidation.
Observed leakage occurs at many of these cracks or at construction/expansion joints.
C. Evaluation of Alternatives.
1. Many of the concrete cracks have partially sealed due to leaching of calcium out of
the concrete. Calcium deposits at active leaks will continue to grow until leakage
stops or the joint is sealed by other means. One option is to do nothing and let the
joints continue to weep. However, if left as is, corrosion of reinforcing will eventually
cause additional cracking and further deterioration.
2. Repairing Cracks from the Tank Exterior and/or Gallery Sides: This approach would
include grinding of the concrete surface to expose and open up the cracks, then
drilling into the crack for pressure injection of a flexible hydrophobic polyurethane
resin to seal the crack.
Leaking joints at distribution and scum boxes can be repaired in a similar manner.
Some of these leaks are difficult to access, but by providing scaffolding, removing
insulation, and working one joint at a time, repairs can be successful.
Exterior repairs could leave behind a fair amount of visible damage or repair scars,
but the calcium deposits could get cleaned off to improve aesthetics. Walls can be
rubbed to blend in repairs and minimize adverse visual effects.
3. Repair from the Interior of Tankage and Flow Channels: For this approach, all cracks
would need to be carefully mapped from the exterior, the tank drained, and the cracks
re -located on the interior face. Again, the crack would be surface ground to open it
up. The crack would also be drilled and repaired by injection using the same
5011610.1
polyurethane resin.
The advantage from working from the inside is that the cracks can also be ground out
to receive a polysulfide sealant at the surface. This sealant would act as a secondary
seal against water intrusion. Being on the inside, and generally below water level,
6-13
these repairs will not be as noticeable. Calcium deposits on the outside can be ground
off and the concrete rubbed to blend with adjacent concrete.
The disadvantage to working from the inside is that there could be some continued
leakage once the tank is put back into service. This could require another draining of
the tank and re -repair of problem areas, extending the time frame and cost needed to
complete repairs.
D. Recommendations. We recommend that a qualified, specialty contractor be used to make
repairs from the exterior while the tanks are full of water. This approach will provide the
highest level of success at stopping leakage.
After repair, walls can be rubbed to clean stains, calcium deposits, and discoloration to help
blend repair areas.
Leakage can be greatly reduced, and aesthetics can be improved.
E. Probable Construction Costs.
• Repair interior and exterior cracks/leaks (approximately 2000 linear feet) $110,000
• Rub and blend repair areas 80,000
Subtotal $190,000
25% Contingency 50,000
TOTAL $240,000
6.5 MISCELLANEOUS STRUCTURAL REPAIRS
A. Background. The IAWWTP was constructed in 1985. The treatment plant is constructed
mostly out of structural concrete for tankage and foundations, and uses masonry for
building superstructures. The entire facility is pile supported. After 20+ years of service,
there has been deterioration and damage to various elements of the facility. It is our
understanding that the City of Ithaca would like to evaluate needed repairs to keep the
treatment plant in operation and in good condition over the next 20 years. This report will
identify and discuss items that need repair and/or restoration.
5011610.1 6-14
B. Evaluation of Existing Facilities.
Based on site inspection and discussions with plant personnel, two items are
identified:
a. Movement of Entrance Structure No. 2. This cast -in -place concrete stair tower
is located at the center of the south end of the process tankage. The stair
provides access from grade, down into Gallery No. 10 and up to the deck level
at el. 402.0. The stair tower is pile supported but is structurally separated from
the main process tank using expansion joints.
The stair tower is tilting or rotating toward the south. Observations of the
expansion joints show a width of about 1-inch at the bottom of the walls
expanding to over 2 inches at the top of the walls. The horizontal expansion
joint at the deck level at el. 402.0 is also over 2 inches in width. The expansion
joint sealant has stretched and failed at all locations. It is not possible to report
on the condition of the waterstop used in the expansion joint, but leakage is
observed which indicates possible failure. Reference Photo C, which shows the
top of one of the wall expansion joints.
2. Miscellaneous concrete repairs at damaged or spalled concrete. These problems exist
at a few locations, such as at the deck elevation change from el. 403.5 at the aeration
tank top deck above Gallery No. 7 down to deck el. 402.0 above Gallery No. 10
between the final settling tanks. Reference Photo D.
WIM--11%
G- U
C. Evaluation of Alternatives.
1. Entrance Structure No. 2 Movement: The extent of recent movement is not
quantified. It appears that settlement and tilting of the structure may have occurred
some time ago. Sealant has dried out over 20 years and failed. One option is to
underpin the structure to provide deep foundation support to prevent further
movement. This may not be practical due to firm subgrade existing at roughly
100 feet deep.
Another, more feasible approach is to provide anchors back to the larger structure.
Custom designed steel brackets and epoxy anchors could be used.
2. Damaged or Spalled Concrete: These areas can readily be repaired with a concrete
repair program. Areas needing repair will be identified, deteriorated concrete
removed, anchors installed, and repair made using either cast concrete or specialty
repair mortar.
D. Recommendations.
1. To stabilize the stair tower, it is recommended to provide anchors back to the main
structure and replace all of the accessible joint sealant, both interior and exterior.
2. For concrete repairs, a generic specification can be prepared to address a variety of
deteriorated/damaged concrete conditions. Combined with a larger project, identified
problem areas can be repaired.
E. Probable Construction Costs.
1. Entrance Structure No. 2
• Brackets with anchors ........................... $15,000
• Joint repair and re -seal ............................ $7,000
2. Damaged/Spalled Concrete Repair
. 250 square foot allowance ..................... $13,000
5011610.1 6-16
6.6 ADMINISTRATION BUILDING SPACE NEEDS
A. Background.
Stearns & Wheler was contracted to "conduct an evaluation of building space needs
for the treatment plant, including administrative and operator offices, meeting and
training needs, storage for equipment and parts, recordkeeping, and laboratory."
2. Steve Blais and Patti Pastella visited the IAWWTP on May 12, 2006 to investigate
how existing spaces are being used. A meeting with IAWWTP personnel was held on
August 3, 2006 to discuss existing conditions and possible improvements. 1AWWTP
laboratory staff subsequently transmitted a "Facility Needs Assessment" that details
the need for additional bench and floor space in the laboratory. The needs assessment
and recommendations below are based on these sources.
B. Space Needs Assessment
5011610.1
As with any facility that has been in use for 20 years, space needs arise for activities
not anticipated by the original design. Some examples at the IAWWTP are:
a. The space required for laboratory activities has increased dramatically because
of additional tests required for SPDES permit compliance and process control.
Numerous pieces of equipment have been added to the laboratory, and
additional counter surface is required for the work. According to a detailed
estimate produced by IAWWTP staff, the combined length of counter and wall
space should be increased from the current allocation of 66 feet to an optimum
allocation of approximately 160 feet.
b. IAWWTP is toured by as many as 100 school, college, or municipal groups
annually. Tours could be better accommodated with:
1) A larger space where visitors could be briefed.
2) Audio-visual equipment to better explain the operations of the facility.
3) Separate and handicapped -accessible toilet facilities.
4) Wheelchair access to the second floor.
6-17
C. A Geographical Information System (GIS) workstation was added to support
mapping work for the City of Ithaca's Planning Department and Water and
Sewer Department. This workstation is currently located on a storage mezzanine
with a low ceiling adjacent to the Instrument Repair space. The GIS workstation
would benefit from a more convenient and more secure location with a ceiling
height suitable for occupied space.
d. The large, first floor space originally designated as a conference and meeting
room is used for multiple purposes, which include workspace for the plant's
billing and administrative assistant, lunch, and meetings. Work activities could
be conducted with less interference if separated spaces were provided for
billing, lunch and meeting activities.
e. There are now 16 employees assigned to the IAWWTP, and SJC meetings are
sometimes attended by up to 20 people. A larger meeting space with audio-
visual equipment would provide a better environment for employee training and
SJC meetings.
f Over time, plant records have accumulated. The SJC is studying options for
managing archives, but no plan has yet been determined. Some additional
storage space would allow files to be partially consolidated and, to some degree,
removed from shop areas.
2. Some of the changes in space use that have developed over the past 20+ years could
be accommodated by rearranging existing floor area. However, the increase in
laboratory equipment and usage; the addition of the GIS function; and the need for
facilities to accommodate meetings, training, and tours can only be fully
accommodated by a net increase in building size.
C. Recommendations.
1. Construct a building addition that meets the needs identified in Section B above,
utilizes space efficiently, and requires minimal disruption of the existing building and
site.
5011610.1 6-18
2. In order to evaluate the size and cost of an addition that would be required to meet the
stated criteria, schematic floor plan layouts were created and are shown on
Figures 6-1 and 6-2. The design shown has the following features:
a. Laboratory space has been expanded to provide approximately 164 lineal feet of
wall or counter space. Layout of specific equipment items is beyond the scope
of this report, but the plan shows a suggested circulation pattern that should be
convenient, utilizes the existing south window opening as the connection
between existing and new spaces, and provides two remote exits as
recommended by laboratory design standards.
b. A separate lunchroom has been provided on the second floor with south window
exposure and sufficient space for a refrigerator, sink, microwave, and coffee
maker.
C. A portion of the existing second floor has been devoted to an enclosed GIS
office.
d. The existing stairway has been enclosed with fire -rated partitions as will
probably be required when the Building Code of New York State is revised to
incorporate the International Existing Building Code.
e. The existing Billing Office has been enclosed.
f. Single -user handicapped -accessible toilet rooms have been provided for each
gender in a location convenient to visitors.
g. A Conference Room has been included in the addition with space for up to
20 people in a conference or training configuration. This room could be
equipped with a projector connected to a computer that could show SCADA
screens or DVDs for training, demonstration, or conference purposes.
h. A SCADA and Operator Workroom has been provided that can house future
SCADA equipment and provide counter space and computer workstations for
operators.
5011610.1
6-19
i. Closets have been provided on each floor so that a limited use/limited access
(LU/LA) elevator can be included in the project or added at a later date.
j. A file storage room has been provided on the first floor.
3. As proposed, the addition is 24 feet wide by 61 feet long, resulting in a footprint of
1,464 square feet per floor. This small footprint will minimize the number of
foundation piles required and minimize the addition's impact on vehicular traffic.
4. Project cost for the addition is estimated at $1,200,000 using current construction
pricing.
6.7 CONCRETE DECK WATERPROOFING
A. Background. Stearns & Wheler was contracted to "develop recommendations to repair
deck waterproofing on concrete decks above galleries."
B. Evaluation of Existing Conditions.
The coating originally applied to walkways and gallery roof slabs at the deck level of
the primary settling, aeration, and final settling tanks is severely weathered. Adhesion
of the coating in most areas has deteriorated to the extent that the coating no longer
functions to either retard water penetration or provide a non -slip surface for
pedestrian safety. See Photograph E.
5011610.1 6-20
r
2. An area of approximately 20,000 square feet of concrete slab surface at the deck level
is accessible to pedestrian traffic. Of that area, approximately 12,400 square feet is
over gallery or other enclosed non -tank space. See Figure 6-3 for affected areas.
C. Evaluation of Alternatives.
1. To limit water penetration into the galleries and to provide a slip -resistant walking
surface, a product should have excellent adhesion to the concrete substrate, be able to
elongate or stretch to accommodate thermal movement of the substrate, have
relatively high tensile strength, be able to withstand sunlight for multiple years, and
be able to incorporate some kind of aggregate to provide a slip -resistant texture.
Available products that have all these characteristics are typically marketed as traffic
toppings for automobile parking garage slabs, or pedestrian toppings for walking
areas where concrete slabs act as a roof.
2. Application recommendations for such products emphasize thorough removal of any
existing materials that may have previously been applied to the concrete, plus either
acid etching or shot blasting of the concrete surface. These techniques are intended to
provide an adequate bond between the existing concrete and the new coating. Either
preparation technique requires attention to the special condition of walking surfaces
adjacent to tanks of process water.
a. Acid etching requires the application of a 10 or 15 percent solution of muriatic
acid, which then must be thoroughly removed from the concrete by rinsing with
water. This method could result in an acid solution and cement particles being
introduced into the process water.
b. Shot blasting could result in blasting pellets or cement dust falling into the
process water. Vacuum -equipped shot blasting machines are available.
3. For proper curing at a location where the concrete substrate can be presumed to have
some moisture content, traffic topping manufacturers recommend application of a
compatible vapor retarder prior to placement of the topping system.
5011610.1
6-21
D. Recommendations.
1. The remnants of the existing coating should be thoroughly removed. In some areas,
the material will simply scrape off. In other areas, use of powered equipment may be
needed.
2. Cracks and voids in the concrete should be filled or otherwise repaired so as to
provide solid support for new coatings with materials recommended by the traffic
topping manufacturer.
3. Joints in the slabs should be scraped clean of sealants and be resealed with materials
compatible with the selected traffic topping. Gaps around objects penetrating the slab
should be sealed.
4. A vapor retarding coating should be applied to the concrete.
5. A traffic topping should be applied consisting of a primer, a base coat, a broadcast
aggregate, and a topping coat. Peda-Gard by the Neogard division of Jones -Blair
Company is an example of a urethane -based traffic topping with appropriate
performance characteristics. With annual inspections and spot recoating as needed,
this type of system can last up to 20 years before replacement.
6. Total project costs for the procedures outlined above will be in the neighborhood of
$8 per square foot in 2007 dollars. Therefore, the construction cost is estimated at
approximately $160,000 to top 20,000 square feet of concrete deck.
6.8 DIGESTER COVER GUIDE REPAIR
A. Introduction. Since construction in 1985, the floating cover on the secondary digester tank
has experienced binding of the guides. The binding is likely a result of uneven load
distribution due to snow and ice accumulation. This binding causes a danger of
misalignment which could result in a cover jamb and damage to the 85 foot diameter cover
and related equipment.
5011610.1 6-22
B. Evaluation of Existing Conditions. Based on site observations, all of the original guides
above the cover are now in a state of disrepair. Due to repetitive movement and binding of
the cover, all of the supports have become damaged beyond repair. The guides have been
disassembled by plant personnel and are no longer effective. Observed damage to the
guides includes the following:
1. Severe twisting of the vertical W6 x 15 post which is welded to stiffened plate
sections on top of the cover.
2. Broken welds at the outside flange of the W6 where they are welded to the top of the
tank cover.
C. Evaluation of Alternatives.
No action will result in excessive wear and tear on mechanical pipe joints, leading to
premature failure of these systems. Also, there would be an increased risk of the
cover becoming jammed and non -operational. A cover jamb could lead to failure of
the cover under negative tank pressure.
2. It is feasible to replace the guides and supports in -kind, which would most likely then
operate adequately for the same length of time as the original installation. However,
over time, similar damage will occur to the rebuilt guides.
3. The guide design could be altered in an effort to increase the life expectancy of the
system. Measures can be taken to rebuild with a more robust guide system. This can
be accomplished by altering the design to provide less twisting force by using shorter
posts and shorter "arm" distance from the post to the guide rail. Using heavier,
stiffened elements will make a new system stronger. Also, switching to a roller
system will provide less opportunity for the cover to bind.
D. Recommendations.
1. Redesign the guides to provide a more robust system. Material cost will be only
slightly higher by using heavier parts. Labor to install a new system will be
approximately the same as replacing the existing system in -kind.
5011610.1 6-23
2. The procedure will be to completely remove the existing W6 posts and grind the
thickened cover plates smooth. A proposed heavier post with stiffeners will be less
subject to twisting. Using a full penetration weld of the outside post flange to the
cover will be much stronger to resist failure. The post and roller support will be
shorter to minimize twisting forces. Changing from stationary slides to roller wheels
will be one less point of friction and binding. See attached sketches.
E. Probable Construction Costs.
1. Demolition and preparation work at existing guide locations .........$10,000
2. Installation of new roller guides and supports ................................ $30,000
5011610.1 6-24
1
• _4_.l�l
46616/:\ 7.1
A summary of the areas investigated, conclusions, and recommendations included in this report
is presented below.
7.1 DISINFECTION OF TREATED EFFLUENT
Disinfection of the IAW WTP effluent is provided by adding sodium hypochlorite solution to the
treated plant effluent at the location of the new phosphorus removal system. The effluent is
required to be dechlorinated prior to discharging into Cayuga Lake. Sulfur dioxide gas is
solubilized and injected into the effluent at a remote location in the outfall pipe.
In an effort to reduce chemical cost, usage, and storage of hazardous chemicals, it is desired by
IAWWTP to evaluate alternatives for UV disinfection. Two alternatives were investigated.
Alternative 1 included upgrading the existing system with new dechlorination equipment and a
relocated sulfur dioxide injection point to achieve adequate mixing and detention time for
chlorination. Alternative 2 included replacing the chlorination/dechlorination system with
ultraviolet disinfection.
The estimated construction cost for upgrading the existing disinfection system is $1,200,000.
However, due to the environmental and safety benefits associated with using UV disinfection in
lieu of chemical disinfection, it is recommended that a UV system be constructed. The estimated
construction cost for a UV disinfection system is $1,700,000.
7.2 SEPTAGE RECEIVING STATION
The existing septage receiving station at the IAWWTP utilizes a separate building that houses
two septage unloading stations — one is used for grease -containing loads, and one is for non -
grease deliveries. Each of these stations includes a bar screen and is connected to its own
underground rectangular storage tank. The receiving station for the grease -containing material is
currently equipped with a Lakeside Rotomat grit system for the removal of solids present in the
grease -containing shipments. The system is frequently jammed by large rocks that are pumped
5011610.1 7-1
out of septage tanks, either as contaminants or as debris from tank deterioration. In addition, the
grit that is inherent to septage has caused extensive damage to pipes and fittings due to erosion.
Options for additional storage, improved unloading, and odor control were investigated. To gain
additional septage storage capacity, it is recommended that a third storage tank be added. A new
structure should be built around new unloading pads and grit removal equipment. The new
septage facility will have a datalogger to monitor and record septage deliveries. The structure
should be ventilated and have an odor control system.
The estimated construction cost for a new septage receiving area and holding tank along with
odor control is $1,900,000.
7.3 LEACHATE RECEIVING OPERATIONS
The leachate receiving operations at the IAWWTP currently take place at the headworks of the
facility (Influent Building). Tanker trucks which transport leachate from the various landfill
sources discharge leachate directly into the influent stream. This mode of operation can create a
shock load to the facility if a high -strength leachate is delivered. The current required location of
the tanker does not provide spill containment during leachate unloading operations.
Alternatives to avoid possible process upsets from these high -strength loads and provide spill
containment have been investigated. The "Pho-Strip" tanks located at the rear of the facility
which were part of the original phosphorus removal process and are no longer used could
provide storage capacity.
The recommended leachate handling improvements include adding an unloading pad at the plant
influent. The proposed system will have a datalogger to monitor and record leachate deliveries.
Storage of leachate was determined not to be required at this time.
The estimated construction cost for a new leachate unloading facility is $120,000.
5011610.1 7-2
7.4 MISCELLANEOUS STRUCTURAUARCIUTECTURAL IMPROVEMENTS
Several technical memoranda have been prepared that evaluated existing structural/architectural
issues through the IAWWTP. These memos provide the background of each issue, evaluation of
alternatives, cost analysis, and recommendations for repair. The content of the technical memos j
i
is included in this report. Following is a summary of each memo.
A. Roof Leaks at Skylights and Other Locations. To address the several roof leaks
throughout the plant, a complete roof replacement is recommended. The estimated cost of
complete roof replacement is $400,000.
B. Digester Brick Repairs. Areas of the brick face on the digester are cracked, spalling, and
out of plumb from the tank wall. Some sections of brick have been removed. Four alternatives to
address the brick face failure at the digesters have been investigated and evaluated. Each is a
viable alternative and, depending on the desired end product and appearance, any alternative can
be recommended.
Alternative A is entire brick removal and replacement with an exterior insulated stucco -like
finish. Estimated project cost is $260,000.
Alternative B is removal of brick face, including insulation, and reconstruction with a new brick
veneer with more expansion joints, closer spaced veneer ties, additional weeps, and a soft joint at
the top of the wall. Estimated project cost is $340,000.
Alternative C is manipulation of the existing brick back into proper alignment, installation of
new and closer spaced anchors into the tank wall, saw cut expansion joints, addition of weeps
and saw cutting of a soft joint at the top of the wall. Estimated project cost is $190,000.
Alternative D is removal of brick face, not including insulation, and installing prefmished ribbed
aluminum panels on the tank exterior. Estimated project cost is $130,000.
C. Concrete Deterioration - Alkali -Silica Reaction (ASR). In order to mitigate ASR and
prevent concrete damage, it is recommended that the walls be treated with lithium nitrate. The
estimated project cost to treat approximately 40,000 square feet of concrete surface is about
$152,000.
5011610.1 7-3
D. Concrete Deterioration - Cracks and Leaks. There are several cracks which resulted
from cold joints, drying shrinkage cracks, or poor consolidation. Some cracks have sealed and
others continue to leak. It is recommended that the cracks be repaired from the tank exterior.
Following repairs, walls can be rubbed to remove stains and calcium deposits. The estimated cost
to repair approximately 2,000 linear feet of exterior cracks is $240,000.
E. Miscellaneous Structural Repairs. Areas requiring structural repair include Entrance
Structure No. 2 and areas of damaged or spalled concrete throughout the plant. After evaluation
alternatives to repair Entrance Structure No. 2, it is recommended the structure be anchored back
to the main structure. The estimated cost for this alternative is $22,000. The estimated cost to
repair 100 square feet of damaged or spalled concrete is $13,000.
F. Administration Building Space Needs. Additional space in the Administration Building
for required laboratory activities, meetings, briefing of tours/visitors, GIS workstation, and
records storage. To create additional space, a building addition is required. It is recommended
that a two-story, 24-foot by 61-foot addition be added to the Control Building. Estimated total
project cost for a building addition is $1,200,000. Figures 6-1 and 6-2 show the proposed
Administration Building addition first and second floor plans.
G. Concrete Deck Waterproofing. The existing waterproof coating on walkways and gallery
roofs has reached the end of its life and is no longer functional. To limit water penetration into
the galleries and provide a non -slip walking surface, a new coating is required to be installed. It
is recommended that the surfaces be prepared and applied with a non -slip coating. The estimated
cost to install the waterproof non -slip coating is $6 per square foot. Total estimate for
approximately 20,000 square feet is $120,000.
H. Digester Cover Guide Rail. The floating digester cover has experienced binding and
braking of the guides used to keep the cover plumb during travel. It is recommended that the
guide rails be redesigned and reconstructed with thicker, more robust materials. The guide slide
blocks should be replaced with rollers to minimize friction and binding. The estimated cost to
install roller guides and supports is $40,000.
5011610.1 7-4
A
-T
7.5 IMPLEMENTATION
Table 7-1 summarizes the cost for all improvements. Each improvement has been prioritized and
distributed for completion over the next five years. Table 7-2 shows the project distribution by
implementation year and the total cost for each year.
TABLE 7-1
COST SUMMARY TABLE
UV disinfection
$1,700,000
Septage handling facility
1,900,000
Leachate unloading
120,000
Roof leaks at skylights and other locations
400,000
Digester brick repair
260,000
Concrete deterioration (ASR)
160,000
Concrete deterioration - cracks and leaks
240,000
Miscellaneous structural repairs
35,000
Administration Building space
1,200,000
Concrete deck waterproofing
120,000
Digester cover guide rail
40,000
TOTAL
Use
$6,175,000
$6,200,000
TABLE 7-2
MISCELLANEOUS PLANT IMPROVEMENTS
5011610.1 7-5
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Ithaca WWTP—Miscellaneous Improvements Project
Update to SJC - September 10, 2007
Proiect History
2005/2007 - Stearns & Wheler was hired by the SJC to develop a list of projects and cost
estimates which could be implemented over a 5 year period. The results of the study were
presented in a March 2007 Report to the SJC, which included construction cost estimates and
engineering cost estimates. Page 7-5 of the report is attached, and summarizes the construction
cost estimates and implementation schedule that represented current thinking in March 2007.
Steams & Wheler fees for the report phase effort were approximately $81,000.
2008 — We prepared bid documents for the projects to be completed in year 1 of the 5-year cycle.
The construction contract was awarded to Hubbard Construction, and work is in progress. The
construction contract total is approximately $1,000,000. Engineering fees for design and
construction phase services are approximately $51,000.
Future Work — Year 2 — Construction in 2009
Table 7-2 shows that upgrades to the Septage Receiving Area is the next planned project.
Figures 1-1, 4-1, and 4-2 are attached, and show the location of the proposed work, and the
current and proposed layout of the Septage Receiving Area. Steams & Wheler is not under
contract for this design work, but has submitted a proposal to the SJC for $135,500 to perform
design and construction phase services.
Future Work — Years 3-5
The SJC will need to continue to consider the remaining projects and prioritize the work.
A
Stearns & Wheler
Companies
7.5 IMPLEMENTATION
Table 7-1 summarizes the cost for all improvements. Each improvement has been prioritized and
distributed for completion over the next five years. Table 7-2 shows the project distribution by
implementation year and the total cost for each year.
TABLE 7-1
COST SUMMARY TABLE
.gym
$1,700,000
UV disinfection
Septage handling facility
1,900,000
Leachate unloading
120,000
Roof leaks at skylights and other locations
400,000
Digester brick repair
260,000
Concrete deterioration. (ASR)
160,000
Concrete deterioration - cracks and leaks
240,000
Miscellaneous structural repairs
35,000
Administration Building space
1,200,000
Concrete deck waterproofing
120,000
Digester cover guide rail
40,000
TOTAL
Use
$6,175,000
$6,200,000
TABLE 7-2
MISCELLANEOUS PLANT IMPROVEMENTS
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EXISTING SEPTAGE RECEIVING STATION - PLAN
SCALE: 1 /4"-1'-0"
UNLOADING PAD
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1/4•=i'-D•
SEPTAGE UNLOADING PAD
SEPTAGE RECEMNG STATION
10 TREATMENT
PLANT
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IJ TREATMENT
PLANT r
TANK N0, 2 IL
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PLANT
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SECTION 1
SEPTAGE RECEMNG STATION SCALE: 3/32"=T'—O"
SEPTAGE RECEIVING STATION - PLAN
SCALE: 3/32"at'—O"
i�
4 0 4 8 12 16 20 24 28
Stearns & Wheler, LLC 1T1i4CA AREA WASTEWATER
TREATMENT PLANT
FIGURE 4-2
DATE: 01/07 JOB NO.: 50116 PROPOSED SEPTAGE RECEMNG STATION
2
Stearns & Wheler, �C
Environmental Engineers and Scientists
September 7, 2005
Mr. Daniel Cogan
Ithaca Area WWTP — SJC Owners
525 Third Street
Ithaca, NY 14850
Re: Professional Services Agreement
Ithaca Area Wastewater Treatment Plant
Miscellaneous Plant Improvements
Dear Mr. Cogan:
one Remington Pack Drive
tel. (375) 655-5161
(ax, (315) 655-4180
web. wwwsreamswhelerxom
:1RIGIP Al_ CONTRACT
Joe M_126 IISp_ _
FEE TYPE __
COPY MADE
This letter and attached Standard Conditions will serve as an Agceement between the City of
Ithaca, the Town of Ithaca, and the Town of Dryden {OWNERS) and Steams & Wheler, LLC
(ENGINEER) for professional services on the referenced project.
SCOPE OF SERVICES
A. Study Phase Services. ENGINEER's Scope of Services for the Study Phase is based
on the following.
Study Phase.
a. Evaluate alternatives to provide ultraviolet (UV) disinfection of the treated
effluent. Prepare cost estimates (capital and operation and maintenance) of
selected UV alternatives. Prepare a cost/benefit summary of selected UV
alternatives compared to continued use of chlorination/dechlorination.
b. Evaluate alternatives and develop recommendations for the leaks in
concrete walls in galleries. Evaluate method to repair concrete damage
caused by alkaline -silica reaction. Develop estimated cost for selected
method of repairs.
C. Develop recommendations to repair deck waterproofing on concrete decks
above galleries. Estimate cost of repairs.
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September 7, 2005
Mr. Daniel Cogan page 2
Ithaca Area W WTP — SJC Owners
d. Develop recommendations to repair leaks at skylights, vents, expansion/
construction joints, channels, and distribution boxes. Estimate cost of
repairs.
e. Conduct an evaluation of building space needs for the treatment plant,
including administrative and operator offices, meeting and training needs,
storage for equipment and parts, record keeping, and laboratory.
f. Evaluate alternatives to repair Secondary Digester floating cover to
improve cover travel without binding- Develop cost of recommended
alternative.
g. Evaluate method to repair brick on Secondary Digester- Estimate cost of
repair.
h. Evaluate alternatives and develop recommendations for improvements to
the septage receiving station including:
• Expansion of the facility
• Gait removal for septage unloading
Odor control.
Estimate cost of proposed improvements.
i. Evaluate alternatives to provide a leachate receiving facility for the
treatment plant. Facility should have provisions for accepting both dilute
leachate (storage and controlled feed into plant) and higher strength
leachate (possible pretreatment or controlled feed into plant). Alternatives
shall include feasibility of using existing PhoStrip tanks -
ENGINEER shall complete the Study Phase within eight (8) weeks of
authorization to proceed, at which time five (5) copies of the draft report will be
submitted for review and comment.
Optional Task:
Develop conceptual design and estimate costs to add a third story to Administration
Building.
Page 2 of Pages
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366
September 7, 2005
Mr. Daniel Cogan Page 3
Ithaca Area WWTP T SIC Owners
B. Design Phase Services. ENGINEER shall prepare Contract Documents (plans and
specifications) suitable for municipal bidding for the following project components.
1. UV disinfection system consisting of open channel design using the existing
(newly constructed) effluent pump station for periods when the combination of
high flows and high lake levels require the effluent to be pumped.
2. Concrete repairs to gallery and tank walls.
3. Repair to leaks at skylights, vents, joints, channels, and distribution boxes.
4. Deck waterproofing.
5. Repairs to Secondary Digester cover.
6. Repairs to brick work at Secondary Digester_
Improvements and expansion of septage receiving facility.
Basic Services to be provided by ENGINEER during the design phase of the project
shall include the following-
1. Attend a design kickoff meeting and two design progress meetings with
OWNERS' representatives. ENGINEER shall prepare and distribute meeting
agendas and meeting minutes in preparation for and in follow-up to each meeting.
Design progress meetings will be conducted at approximately 50 percent and 95
percent completion of design.
2. Prepare drawings and specifications to show the general scope, extent and
character of the work to be furnished and performed by contractors.
3. Prepare contract agreement forms, general and supplementary conditions, bid
forms, invitations to bid, and instructions to bidders for review and approval by
OWNERS.
4. Based on the final design drawings and specifications, prepare a revised opinion
of probable Total Project Costs_
Page 3 of 4 Pages
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Mr. Daniel Cogan September 1, 2005
Page 4
Ithaca Area W WTP — SJC Owners
Assist OWNERS is obtaining regulatory approvals needed to proceed to the
bidding and construction phase from the New York State Department of
Environmental Conservation (NYSDEC) and the New York State Environmental
Facilities Corporation (NYSEFC) (if required).
C. Bidding Phase Services. Basic Services to be provided by ENGINEER during the
Bidding Phase of the project shall include the following.
1. Assist OWNERS in advertising for and obtaining bids for construction Based on
the bidding of three (3) construction contracts, ENGINEER shall provide thirty-
five (35) sets of reduced -size Contract Drawings and ten (10) sets of full-size
Contract Drawings for use by OWNERS during bidding- In addition, ENGINEER
shall receive and process deposits for Bid Documents, maintain a record of
prospective bidders to whom Bid Documents have been issued, and attend a pre -
bid conference with prospective bidders.
2. Issue addenda as appropriate to interpret, clarify, or expand the Bidding
Documents.
3. Attend a pre -bid meeting to be held at the Ithaca Area Wastewater Treatment
Plant for the purpose of discussing the project with potential bidders.
Attend the bid opening, tabulate bids received, and assist OWNERS in evaluating
bids and in assembling and awarding contracts.
D. Construction Phase Services. Basic Services to be provided by ENGINEER during
the Construction Phase of the project shall include the following.
General Administration of Construction Contracts. ENGINEER shall consult
with and advise OWNERS and act as OWNERS' representative as provided in
the Standard General Conditions of the Construction Contract, which are attached
to this Agreement. The extent and limitations of the duties, responsibilities and
authority of ENGINEER as assigned in said Standard General Conditions shall
not be modified except as ENGINEER may otherwise agree in writing. All of
OWNERS' instructions to Contractor(s) will be issued through ENGINEER who
will have authority to act on behalf of OWNERS to the extent provided in said
Standard General Conditions.
Page 4 of 4 Pages
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Mr. Daniel Cogan September 7, 2005
Page 5
Ithaca Area WWTP—SJC Owners
2. Site Visits and Observation of Construction. ENGINEER shall make visits to
the site at appropriate intervals as ENGINEER deems necessary in order to
observe as an experienced and qualified design professional the progress and
quality of the various aspects of Contractor(s)' work, and to determine in general
if the work is proceeding in accordance with the Contract Documents.
In addition, ENGINEER shall provide the services of a Project Representative to
assist ENGINEER and provide more continuous observation of such work. The
services of the Project Representative are based on a level of effort of 800 labor
hours over a 12-month construction duration.
The Project Representative will be an employee of ENGINEER under
ENGINEER's supervision. The duties and responsibilities of the Project
Representative are set forth in Exhibit A, "Duties, Responsibilities and Limitation
of Authority of Project Representative" which will be made a part of the
Construction Contract Documents. Exhibit A is hereby incorporated into and
made a part of this Agreement.
The purpose of ENGINEER's visits to and representation by the Project
Representative at the site will be to enable ENGINEER to better carry out the
duties and responsibilities assigned to ENGINEER during the Construction
Phase, and, in addition, by exercise of ENGINEER's efforts as an experienced
and qualified design professional, to provide for OWNERS a greater degree of
confidence that the completed work of Contractor(s) will conform generally to
the Contract Documents and that the integrity of the design concept has been
implemented and preserved by Contractor(s). ENGINEER shall not, during such
visits or as a result of such observations of Contractor(s)' work in progress,
supervise, direct or have control over Contractor(s)' work nor shall ENGINEER
have authority over or responsibility for the means, methods, techniques,
sequences or procedures of construction selected by Contractor(s), for safety
precautions and programs incident to the work of Contractor(s) or for any failure
of Contractor(s) to comply with laws, rules, regulations, ordinances, codes or
orders applicable to Contractor(s) furnishing and performing their work.
Accordingly, ENGINEER can neither guarantee the performance of the
construction contracts by Contractors) nor assume responsibility for
Contractor(s)' failure to furnish and perform their work in accordance with the
Contract Documents.
Page 5 of Pages
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Mr. Daniel Cogan September 7, 2005
Ithaca Area WWTP - SJC Owners Page 6
3. Defective Work. ENGINEER maynotify OWNERS to reject Contractor(s)' work
while it is in progress if ENGINEER believes that such work will not produce a
completed Project that conforms generally to the Contract Documents or that it
will prejudice the integrity of the design concept of the Project as reflected in the
Contract Documents.
4. Clarifications, Interpretations, and Field Orders. ENGINEER shall issue
necessary clarifications and interpretations of the Contract Documents as
appropriate to the orderly completion of the work. Such clarifications and
interpretations shall be consistent with the intent of, and reasonably inferable
from, the Contract Documents.
5. Change Orders and Work Change Directives. Consistent with Article 10 of
the Standard General Conditions of the Construction Contract, ENGINEER shall
recommend Change Orders and Work Change Directives to OWNERS as
appropriate and shall prepare Change Orders and Work Change Directives as
required.
6. Shop Drawings and Other Submittals. ENGINEER shall review and approve
(or take other appropriate action regarding) Shop Drawings, samples and other
data and information which Contractor(s) are required to submit, but only for
conformance with the design concept of the project and compliance with the
information given in the Contract Documents. Such reviews and approvals or
other action shall not extend to means, methods, techniques, sequences or
procedures of construction or to safety precautions and programs incident thereto.
7. Substitutes. ENGINEER shall evaluate and determine the acceptability of
substitute and "or equal" materials and equipment proposed by Contractor(s) in
accordance with the provisions of the Contract Documents.
8. Concrete and Soil Testing. ENGINEER shall provide concrete and soil testing
services, including appropriate professional interpretations of test results, to aid
ENGINEER in evaluating whether work performed by Contractor(s) conforms to
the Contract Documents.
Page 6 of 4 Pages
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Mr. Daniel Cogan
Ithaca Area W WTP — SJC Owners
September 7, 2005
Page 7
9. Claims. Consistent with Article 10 of the Standard General Conditions of the
Construction Contract, ENGINEER shall act as initial interpreter of the
requirements of the Contract Documents and judge of the acceptability of the
work there under and make decisions on all claims of OWNERS and
Contractor(s) relating to the acceptability of the work or the interpretation of the
requirements of the Contract Documents. ENGINEER shall not be liable for the
results of any such interpretations or decisions rendered in good faith.
10, Applications for Payment. ENGINEER shall determine the amounts owmg to
Contractor(s) and recommend payments. Such recommendations will constitute a
representation to OWNERS that the work has progressed to the point indicated,
and that, to the best of ENGINEER's knowledge, information and belief the
quality of such work is generally in accordance with the Contract Documents. By
recommending payment, ENGINEER will not represent that exhaustive,
continuous or detailed reviews or examinations have been made by ENGINEER
to check the quality or quantity of Contractor(s) work. ENGINEER's review of
Contractor(s)'work for the purposes of recommending payments will not impose
responsibility on ENGINEER to make any examination to ascertain how or for
what purposes any Contractor has used the moneys paid on account of the
Contract Price, or to determine that title to any of the work, materials or
equipment has passed to OWNERS free and clear of any lien, claims, security
interests or encumbrances.
PAYMENTS TO ENGINEER
For the Basic Services outlined in the above Scope of Services, or Additional Services,
OWNERS shall pay ENGINEER an hourly rate equal to ENGINEER's Salary Cost times a
factor of 2.37 for all services rendered by principals and employees engaged directly on the
Project, plus reimbursable expenses at cost.
The total cost for the Basic Services described above shall not exceed $373,690 without prior
written authorization of OWNERS. Written authorization for each task shall be in the form
of an executed Authorization signed by the Chairperson of the Ithaca Area WWTP-SJC
Owners (see Exhibit B attached).
TASK
EFL.
DURAMN
A. Study Phase
1. UV Disinfection
$16,530
8 weeks
2_ Miscellaneous Improvements/Repairs
8 'weeks
Page 7 of 4 Pages
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Mr. Daniel Cogan
Ithaca Area WWTP— SIC Owners
September 7, 2005
Page 8
TASK
111yE
DD!&a PIU1Y
a. Concrete Repairs — Walls
$5,600
b. Deck Waterproofing
$1,260
c. Leaks at Skylights, etc.
$3,600
d. Digester Cover Repairs
$1,180
e. Digester Brick Repairs
$1,040
3. Administration Building Space Analysis
$2,430
8 weeks
4. Septage Facility
$16,800
8 weeks
5. Leacblate Facility
$23,800
8 weeks
Subtotal Study Phase
S72,240
B. Design Phase
1. UV Disinfection
$83,840
4 months
2. Miscellaneous Improvements/Repairs
2 months
a. Concrete Repairs — Walls
$7,050
b. Deck Waterproofing
$2,800
c. Leaks at Skylights, etc.
$5,100
d. Digester Cover Repairs
e. Digester Brick Repairs
$3,3003.
Septage Facility
;;S3,660
03,000
6 months
Subtotal Design Phase
08,750
C. Bidding Phase
1. UV Disinfection
$5,600
6 weeks
2. Miscellaneous improvements/Repairs
$2,200
6 weeks
3. Septage Facility
$4,800
6 weeks
Subtotal Bidding Phase
$12,600
D. Construction Phase
1. UV Disinfection t>> $17,100 9 months
2. Miscellaneous Improvements/Repairs t1� I $6,200 I 4 months
.Page 8 of 4 Pages
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Mr. Daniel Cogan
Ithaca Area WWTP — SIC Owners
September 7, 2005
Page 9
Too'PEE
T)rl[tA1TOIt9
3. Septage Facility trl
$33,400
6 months
4. Resident Representative (800 hours collectively)
$21,600
12 months
Subtotal Construction Phase
$78,300
TOTAL ALL PHASES
I $371,890
Does not include Resident Representative.
tz> Optional Task: Analysis of 3' Story Addition: S4,240, if authorized in writing.
PERIOD OF SERVICE
The Study Phase will commence upon receipt of written authorization of OWNERS and will
be completed as a draft report within eight (8) weeks.
The Design Phase will commence upon acceptance by OWNERS of ENGINEER's report
and upon written authorization to proceed by OWNERS and will be submitted for 95 percent
review within four (4) months.
The Bidding Phase will commence upon acceptance by OWNERS of ENGINEER's
drawings, specifications, and other Final Design Phase documentations, including the most
recent opinion of probable construction cost, and upon written authorization to proceed by
OWNERS. The Bidding Phase will terminate and the services to be performed or furnished
there under will be considered complete upon commencement of the Construction Phase, or
upon cessation of negotiations with prospective Contractor(s).
The Construction Phase will commence with the execution of construction contracts for the
project, or any part thereof and upon written authorization to proceed by OWNERS, and will
terminate upon written recommendation by ENGINEER of final payment to Contractor.
ENGINEER's level of effort for performing the Basic Services described for the
Construction Phase is scoped for a twelve-month (12) duration for all construction contracts.
FURTHER SERVICES AND PAYMENTS
This Agreement maybe amended to provide authorization and payment for further phases or
Additional Services. ENGINEER may proceed with such services based upon receipt of a
mailed or faxed authorization from OWNERS which, until a formal amendment is executed,
shall constitute a Contract Amendment, with payment for such services on the Basis of
ENGINEER's Salary Cost times a factor of 2.37.
Page 9 of 4 Pages
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Mr. Daniel Cogan September 7, 2005
Ithaca Area WWTP — SIC Owners Page 10
STANDARD CONDITIONS
Attached hereto are the Standard Conditions to this Agreement consisting of four (4) pages
which the OWNER has reviewed and acknowledges to be a part of this Agreement.
AUTHORIZATION
The return of one (1) signed copy of this Letter Agreement together with a copy of a formal
resolution of approval constitutes acceptance of this Agreement. Written authorization for
ENGINEER to proceed with the individual tasks outlined in the Scope of Services shall be
by return of one (1) signed copy of the authorization of services included as Exhibit B.
Very truly yours,
STE y4c WHELER, LLC
By:
�o
Gerald C. Hook, P.E.
Title: President/CEO
ACCEPTED AND AUTHOKIZ.ED
CITY OF ITHACA, NEW YORK
BY:
Carol C. Peterson
Title: Mayor
Date: 9' 19 " C S'
TOWN O�F7ITHACA, NEW YORK TOWN OF
D`RYDEN, NEW YORK
By: (�dJCli� ca vi l/•cL�A� �i�, By: iifi�7il //G`�
Catherine 'Valentino Steven Trumbull
Title: Supervisor
Date: /
Page 10 of 4 Pages
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Title: Supervisor
Date:
r—r
STANDARD CONDITIONS
TO ACCOMPANY
LETTER FORM OF AGREEMENT BETWEEN
OWNERS AND ENGINEER
FOR
PROFESSIONAL SERVICES
OWNERS; CITY OF TTHACA TOWN OF ITHACA TOWN OF DRYDEN-SIC OWNERS
ENGINEER: STEARNS & WHELER, LLC ONE REMINGTON PARK DRf 1E CAZENOVIA, NY I
ASSIGNMENT :ITHACA AREA WWTP FINAL MISCELLANEOUS PLANT IMPROVEMENTS
OWNERS and ENGINEER agree on professional engineering services by ENGINEER and the payment for those services by
OWNERS as set forth below
BASIC SERVICES OF ENGWEER Provide all criteria and full information as to OWNERS'
requirements for the Project and furnish copies of all design
General and construction standards which OWNERS will require to
be included in the Drawings and Specifications.
ENGINEER shall provide professional services in all phases
of the Project to which this Agreement applies pursuant to
the Scope of Services in the Letter Agreement to which
the Standard Conditions are attached.
Design Phase
ENGINEER shall:
On the basis of the accepted documents and the opinion of
probable costs, prepare final drawings and specifications to
show the general scope, extent and character of the work to
be furnished and performed by Contractor(s).
Furnish to OWNERS a revised opinion of probable Total
Project Costs.
Prepare for review and approval by OWNERS, its legal
counsel and other advisors contract agreement forms,
general conditions and supplementary conditions, and bid
forms, invitations to bid and instructions to bidders.
Flemish five (5) copies of the above documents and of the
Drawings and Specifications.
OWNER'S RESPONSIBILITIES
OWNERS shall designate and advise ENGINEER of a
person to act as OWNERS' Representative who has
complete authority with respect to the ENGINEER'S services
for the Project. OWNERS shall do the following in a timely
manner so as not to delay the services of ENGINEER:
Page 1 of Pages
W\WoaD?X0C"W A9MV0MkM" KIC rIMI Inpmvcmeu #2 Ex
Assist ENGINEER by placing at ENGINEER's disposal all
available information pertinent to the Project including
previous reports.
Furnish to ENGINEER, as required for performance of
ENGINEER's services, the following:
data prepared by or services of others, including
borings, probings and subsurface explorations;
enynonmental assessment and impact statements;
m
property, boundary, easeent, right-of-way and
topographic surveys;
property descriptions;
zoning, deed and other land use restriction;
all of which ENGINEER may use and rely upon in perform-
ing services under this Agreement.
Arrange for access to and make all provisions for
ENGINEER to enter upon public and private property as
required for ENGINEER to perform services under this
Agreement.
Examine all studies, reports, sketches, Drawings,
Specifications, proposals and other documents presented by
ENGINEER, obtain advice of an attomey, insurance
counselor and other consultants as OWNERS deems
appropriate.
Furnish approvals and permits from all governmental
authorities having jurisdiction over the Project.
Provide accounting, independent cost estimating and insur-
ance counseling services required for the Project, such legal
services as OWNERS may require or ENGINEER may
reasonably request with regard to legal issues.
Give prompt written notice to ENGINEER whenever
OWNERS observes or otherwise becomes aware of any
development that affects the scope or timing of
ENGINEMs services, or any defect or nonconformance in
the work of any Contractor.
PERIODS OF SERVICE
Compensation for ENGINEER's services has been agreed to
in anticipation of the orderly and continuous progress of the
Project. If specific periods of time for rendering services are
set forth or specific dates by which services are to be com-
pleted are provided and if such dates are exceeded through
no fault of ENGINEER, all rates, measures and amounts of
compensation shall be subject to equitable adjustment.
If OWNERS bavc requested significant modifications in the
general scope, extent or character of the Project, the time of
performance of ENGINEER's services shall be adjusted
equitably.
PAYMENTS TO ENGINEER
Methods of Payment for Services and Expenses of
ENGINEER
OWNERS shall pay ENGINEER for services rendered as
provided in the Letter Agreement.
Times of Payments
ENGINEER shall submit monthly statements for services
and Reimbursable Expenses. The statements will be based
upon the hours and rates of personnel who have provided
services. OWNERS shall make prompt payments in
response to ENGINEER's monthly statements.
Other Provisions Concerning Payments
In the event of termination by OWNERS, ENGINEER will
be paid for services rendered on the basis of ENGINEER's
Salary Costs times a factor of 2.37 for services rendered to
date of termination. ENGINEER also will be reimbursed for
the charges of independent professional associates and
consultants employed by ENGINEER and paid for all
unpaid Additional Services and unpaid Reimbursable
Expenses, plus all termination expenses.
Page 2 of 4 Pages
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Definitions
The Salary Costs used as a basis for payment mean salaries
and wages (basic and incentive) paid to all ENGINEER'S
personnel engaged directly on the Project, plus the cost of
customary and statutory benefits including, but not limited
to, social security contributions, unemployment, excise and
payroll taxes, workers' compensation, health and retirement
benefits, sick leave, vacation and holiday pay and other
group benefits.
The amount of customary and statutory benefits of all other
pasonnel of ENGINEER will be considered equal to 38.5%
of salaries and wages, subject to equitable adjustment to
reflect changes in ENGINEER's overall compensation
procedures and practices.
Reimbursable Expenses mean the actual expenses incurred
by ENGINEER, directly or indirectly in connection with the
Project, such as expenses for transportation and subsistence,
toll telephone calls; reproduction of reports, Drawings,
Specifications, Bidding Documents, and similar Project -
related items; and, if authorized in advance by OWNERS,
overtime work requiring higher than regular rates.
OPINIONS OF COST
Since ENGINEER has no control over the cost of labor,
materials, equipment or services furnished by others, or over
the Contractor(s)' metbods of determining prices, or over
competitive bidding or market conditions, ENGINEER's
opinions of probable Total Project Costs and Construction
Cost provided for herein are to be trade on the basis of
ENGINEER's best judgment as an experienced and qualified
professional engineer. ENGINEER cannot and does not
guarantee that proposals, bids or actual Total Project or
Construction Costs will not vary from opinions of probable
cost prepared by ENGINEER. If OWNERS wish greater
assurance as to Total Project or Construction Costs,
OWNERS shall employ an independent cost estimator.
GENERAL CONSIDERATIONS
Termination
The obligation to provide further services under this
Agreement may be terminated by either party upon thirty
days' written notice in the event of substantial failure by the
other party to perform in accordance with the terms hereof
through no fault of the terminating party.
Reuse of Documents
All documents including Drawings and Specifications
prepared or furnished by ENGINEER are instruments of
service in respect of the Project and ENGINEER shall retain
an ownership and property interest therein whether or not
the project is completed. Any reuse without written
verification or adaptation by ENGINEER for the specific
purpose intended will be at OWNERS' sole risk and without
liability or legal exposure to ENGINEER, and OWNERS
shall indemnify and hold harmless ENGINEER from all
claims, damages, losses and expenses including attorneys'
fees arising out of or resulting therefrom
Standard d of Care
In accepting this Agreement for professional services by
ENGINEER, OWNERS acknowledge that ENGMEWs
services often require decisions which are based upon
judgmental considerations. In performumg ENGINEER'S
professional services, ENGINEER will use that degree of
care and skill ordinarily exercised under similar
circumctamcesbymembersoftheprofsssion. The standard
of care shall exclusively be judged as of the time the
services are rendered and not according to later standards.
Insurance
ENGINEER shall procure and maintain insuranee for
protection from claims under workers' compensation acts,
claims for damages because of bodily injury including
personal injury, sickness or disease or death of any and all
employees or of any person other than such employees, and
from claims or damages because of injury to or destruction
of property including loss of use resulting therefrom.
Controlling Law
This Agreement is to be governed by the law of the principal
place of business of ENGINEER.
Successors and Assigns
OWNERS and ENGINEER each is hereby bound and the
partners, successors, executors, administrators and legal
representatives of OWNERS and ENGINEER are hereby
bound to the other party to this Agreement and to the
partners, successors, executors, adminismamrs and legal
representatives of such other parry.
Page 3 of Pages
W;\Wo'DMoCUW"g QoovW Mi.lW,Inpprs,ma 92
Neither OWNERS nor ENGINEER shall assign, sublet or
transfer any rights under or interest in this Agreement
without the written consent ofthe other. Nothing contained
in this paragraph shall prevent ENGINEER fromernployuig
such independentprofessional associates and consultants as
ENGINEER nay deem appropriate to assist in the
performance of services hereunder.
Nothing under this Agreement shall be construed to give any
rights or benefits in this Agreement to anyone other than
OWNERS and ENGINEER, and all duties and
responsibilities undertaken pursuant to this Agreement will
be for the sole and exclusive benefit of OWNERS and
ENGINEER and not for the benefit of any other party.
Arbitration
All claims, counterclaims, disputes and other matters in
questiouberwmn the parties hereto arising out of or relating
to this Agreement or the breach thereof will be decided by
arbitration in accordance with the Construction Industry
Arbitration Rules of the American Arbitration Association
Notice of demand for arbitration must be made w1thill 11
reasonable time after the claim, dispute or other matter in
question has arisen. jr on event may the demand for arbitra-
tion be made after the date when institution of legal or
equitable proceedings based on such claim, dispute or other
matter in question would be barred by the applicable statute
of limitations.
No arbitration arising out of, or relating to, this Agreement
may include, by consolidation, joinder or in any other
manner, any person or entity who is not a party to this
Agreement.
The award rendered by the arbitrators will be final,
judgment may be entered upon it in any court having
jurisdiction thereof, and will not be subject to modification
or appeal except to the extent permitted by the Federal
Arbitration Act.
Waste Materials
Waste materials (including soil and water samples, drilling
cuttings, oil samples, water, and other rnatmisls) produced
during the performance of these services are the property of
OWNERS. ENGINEER shall retain soil and water Sample
for no longer than forty-five (45) days after sampling, unless
other arrangements are agreed upon in writing. It is
OWNERS' responsibility to select and arrange for lawful
transportation, treatment, and disposal of the samples with
appropriate licensed parties.
Disclosure
OWNERS may be required by federal, state or local
regulation or statute to report the results of services
performed by ENGINEER under this Agreement or
information uncovered by ENGINEER under this
AgreernenL It is agreed that OWNERS shall be responsible
for all such reporting. ENGINEER shall, however,
immediately disclose to OWNERS any document or
information which ENCiMER has reason to believe to be
subject to a reporting obligation.
Page 4 of Pages .:m�
W,wOaDpV,O Saw Ar_=5%W% MYc p" Inp�w
Confidentiality
ENGINEER agrees to keep confidential and not discos to
any person or entity, other than ENIGINEER's employees
and subcontractors, without the prior written convent of
OWNERS, which consent shall trot be unreasonably
withhold, delayed, or conditioned, all data and information
not previously known to and generated by ENGINEER, or
furnished to ENGNEER and marked "CONFIDENTIAL"
by OWNERS in the course of ENGINEER's performance of
the services contemplated hereunder, provided, however,
that this provision shall not apply to data or information
which is in the public domain or which was previously
known to ENGNEER, or which was acquired by
ENGINEER independently from thud Pares not under any
obligation to OWNERS to keep such data and information
confidential. These provisions shall not be interpreted to
restrict ENGINEER from complying with any applicable
law, Wile, regulation, ordinance, code, standard, or court
order.
L L V
EXHIBIT B
AUTHORIZATION FOR SERVICES
UNDER
AGREEMENT FOR GENERAL ENGINEERING SERVICES
DATED
BETWEEN
CITY OF ITHACA, TOWN OF ITHACA, AND TOWN OF DRYDEN, NEW YORK (OWNERS)
AND
AUTHORIZATION NO.:
DATE:
DESCRIPTION:
STEARNS & WHELER, LLC (ENGINEER)
September 6, 2005
JOB NO.
Ithaca Area Wastewater Treatment Plant: Miscellaneous Plant Improvements
SCOPE OF SERVICES:
Complete Study Phase.
COMPLETION TIME: Eight (8) weeks
BUDGET AUTHORIZATION: $72,240
ACCEPTED:
STEARNS�&.jWHEL�EIR V
Gerald C. Hook, P.E.
Title: President/CEO
Page I of 3 Pages
W:\waN ,saw Au UWNN WWR MW YW Ii,pvvm.m.Am
N41AS
AUTHORIZED:
CITY OF ITHACA, NEW YORK
By:—al!C.
Title: M4qoy--
-I- +3 -cS
I
AUTHORIZED:
AUTHORUA.TION NO. I
CITY OF ITHACA, TOWN OF rFRAC)r4OWN OF DRYDEN, NEW YORK
ro AcV v%
TOWN OF ITHACA, NEW YORK
Title:
Date: / U
GCHlIb
STATE OF NEW YORK )
) SS.
COUNTY OF TOMPKINS )
AUTHORIZED:
TOWN OF DRYDEN, NEW YORK
Title: St, 0 vba✓
Date: (o f f y-�e)5
On this 131i— day of 52005, before me, the subscriber, personally
appeared Cie / K Ps me known and known tome to be the ( of the
City of Ithaca, New York, the OWNER described herein, and who, being duly authorized, executed the
same on behalf of the OWNER following formal resolution of the X., 0dated
a copy of which is attached hereto.
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
INS
��tary Public TORDEL
Notary Public, Slate of New YOr
No.4974956
Qualified in ToNov.ins26un "0
Commission Expires
On this ! yt'x day of 06,703C'ye- 2005, before me, the subscriber, personally
appeared S7'EVC N %iuwF,[.t-J, to me known and known to me to be the d4Pat N,W of the
Town oR
�pp��kgea,,.,�dr
'New York, the OWNER described herein, and who, being duly authorized, executed the
same on behalf of the OWNER following formal resolution of the , Toan't &A ✓d dated
1p !3 16 S , a copy of which is attached hereto. n
Notary I'ljtblic
MMLI44 Ric
Page 2 of 3 Pages No45632
NOTARY PUBLIC,
60f New York
w%waames&w µoiumnihou wwt? min Pbm Irrf nu d,c Qualified in Tompkins Coyrry
am.os Commfssrcn Expires W /
=11
STATE OF NEW YORK
u AU MORIZATION NO- I
CITY OF ITHACA, TOWN OF ITFIACA, TO WN OF DRYDEN, N> (PAGER 3
COUNTY OF TOMPKINS
)
SS;
On this I day of��" t�� , 2005, before me, the subscriber, personally
appeared Kew
lW hooto me known and known to me to be the &Lli:� of the
Town ofa,f
York, the OWNER described herein, and who, being duly authon ed, executed
the same on behalf of be OWNER following formal resolution of the
GL7r dated _
CtUi/y � (i�' , a copy of which is attached hereto.
Notary Public
CARRIE Stele of New York
NOteryNo.01VVH6052877
STATE OF NEW YORK ) TiogDecember 266W
) SS: cornrnlsslon Expires
COUNTY OF MADISON )
On this .th day of 2005, before me, the subscriber, personally
appeared Gerald C. Hook, P-E., to me known and known to me to be the President/CEO of the film of
Stearns & Wheler, LLC, the ENGINEER described herein, and who executed the same for the act and
deed of said firm.
nh kw
Notary Public
JOANNE L. BARTELL
Notary Public, State of New York
No.0jRA6oa2o52
Qualified In Madison County
ConvWaaion Expires July 30, 20-
9
Page 3 of 3 Pages
W;1W0WWS&W AYA'=Mh, WWiP M„c Pluu yryvo nu.dM
W 145
s-i
1 J 2 DPW IAWWTP Approval of Engineering Services Contract for
1111:..-- 1mnr^vamanfc }n IAVJVJTP - Resolution
By Alderperson Berry.- Seconded by Alderperson Korherr
WHEREAS, the capital projects approved by the City and Special Joint Sewer
Committee (SJC) for 2004 and 2005 totaling $1,085,000 for concrete and miscellaneous
structural repairs, ultraviolet disinfection, and septagetleachate disposal at the
Wastewater Treatment Plant have been delayed by expanded staff duties related to the
project management of the enhanced phosphorus removal project, and
WHEREAS, the SJC has requested that a more detailed cost analysis study be
performed for the approved Wastewater Treatment Plant projects that make up the five
year Project Plan, and
WHEREAS, the cost to do said study has been estimated at $74,040 which includes
reports on digester floating cover problems, administrative space, additives. UV
disinfection, concrete plant repairs, septage and leachate facility improvements, deck
waterproofing and skylight leak repairs; now, therefore, be it
RESOLVED, That the Common Council hereby approves a cost analysis study report of
said projects, with scope as outlined in proposal from Stearns & Wheler, environmental
consultants, for a cost -not -to -exceed $74,040, and be it further
RESOLVED, That said contract approval is contingent on approval by the Sewer Joint
Subcommittee, and be further
RESOLVED, That Funds for said contract shall be derived from existing budget and
capital project funds.
Carried Unanimously
STATE OF NEW YORK
COUNTY OF TOMPKINS SS:
CITY OF ITHACA
I, Julie Conley Holcomb, City Clerk of the City of Ithaca, do hereby certify that the
foregoing resolution is a true and exact copy of a resolution duly adopted by the
Common Council of said City of Ithaca at a regular meeting held on the 6th day of July,
2005, and that the same is a complete copy of the whole of such resolution.
IN WITNESS WHEREOF, I have hereunto set my hand and the Corporate Seal of the
City of Ithaca, this 14`h day of Septemb 2005.
u e Conley Holcomb, CMC
City Clerk
City of Ithaca, New York
RESOLUTION NO. /5C (2005)
WHEREAS, the Special Joint Sewer Committee (SJC) has requested that a detailed cost
analysis study be performed for the previously approved Wastewater Treatment Plant projects that
constitute the five-year Project Plan, and
WHEREAS, Steams & Wheler, environmental consultants, have submitted a proposal to
prepare a cost analysis study report of said projects, including reports on digester floating cover
problems, administrative space, additives, UV disinfection, concrete repairs,
repairs, septage and
leachate facility improvements, deck water proofing and skylight
WHEREAS, the cost to complete said study has been estimated at $72,240, now, therefore,
be it,
RESOLVED, that the Town Board hereby approves a cost analysis study report of said
projects, the scope of which is outlined in the proposal from Steams & Wheler, environmental
consultants, for a cost not to exceed $72,240, and be it further
RESOLVED, that the Town Supervisor is authorized to sign the letter agreement with
Stearns & Wheler dated September 7, 2005, and be it further
RESOLVED, that this approval is contingent upon approval of the letter agreement by the
other owners of the Ithaca Area Wastewater Treatment Plant, and be it further
RESOLVED, that the Town's share of such cost shall not exceed the Town's percentage
ownership interest in the IAWWTP.
STATE OF NEW YORK }
COUNTY OF TOMPKINS ISS.:
TOWN OF DRYDEN }
I, Kristin M. Strickland, duly appointed Deputy Town Clerk of the Town of Dryden,
Tompkins County, New York, DO HEREBY CERTIFY;
That I have compared the foregoing resolution with the original resolution adopted by the
Town Board of the Town of Dryden at a regular meeting of said Town held on the 130 day of
October, 2005, and that it is a true and exact copy of said original and of the whole thereof.
IN WITNESS WHEREOF, 1 have hereunto set my hand and the seal of the Town of Dryden
this 14� day of October, 2005.
Kristin M. Strickland, Deputy Town Clerk
Regular Meeting of the Ithaca Town Board
Monday, October 17, 2005
TB RESOLUTION NO 2005:149 - Consider Authorization to Sign Letter of
Agreement with Stearns & Wheler
WHEREAS, the Special Joint Sewer Committee (SJC) has requested that
a detailed cost analysis study be performed for the previously approved
Wastewater Treatment Plant projects that constitute the five-year Project Plan,
and
WHEREAS, Stearns & Wheler, environmental consultants, have submitted
a proposal to prepare a cost analysis study report of said projects, including
reports on digester floating cover problems, administrative space, additives, UV
disinfection, concrete plant repairs, septage and leachate facility improvements,
deck water proofing and skylight leak repairs, and
WHEREAS, the cost to complete said study has been estimated at
$72,240, now, therefore, be it,
RESOLVED, that the Town Board hereby approves a cost analysis study
report of said projects, the scope of which is outlined in the proposal from
Stearns & Wheler, environmental consultants, for a cost not to exceed $72,240,
and be it further
RESOLVED, that the Town Supervisor is authorized to sign the letter of
agreement with Stearns & Wheler dated September 7, 2005, and be it further
RESOLVED, that this approval is contingent upon approval of the letter of
agreement by the other owners of the Ithaca Area Wastewater Treatment Plant,
and be it further
RESOLVED, that the Town's share of such cost shall not exceed the
Town's percentage ownership interest in the Ithaca Area Wastewater Treatment
Plant.
MOVED: Supervisor Valentino
SECONDED: Councilman Stein
VOTE Superiisor Valentino, aye; Councilwoman Grigorov, aye; Councilman
Lesser, aye; Councilman Burbank, absent; Councilwoman Gittelman, aye;
Councilman Engman, aye; Councilman Stein, aye.
I HEREBY CERTIFY THAT THE FOREGOING IS A
TRUE COPY OF A RESOLUTION ADOPTED BY THE
TOWN BOARD OF THE TOWN OF ITHACA. "1
TOMPKDAY OFINSryG,4U1�{TY. NEVy'YORK, ON 11 l�
1 E _ Es
Dale Town ClerWDepup- Town Clerk
ri
4, STEARNS & WHELER�
Environmental Engineers & Scientists
December 31, 2007
Mr. Erik Whitney, P.E.
Assistant Superintendent of Public Works
City of Ithaca DPW
510 First Street
Ithaca, NY 14850
Re: Amendment #2 to General Services Agreement
S&W No. 50116.0
Dear Mr. Whitney:
Four copies of Amendment #2 to our general services agreement are attached. This amendment
covers the $7,000 increase in our fee approved in the December 2007 resolution.
Please circulate the copies for the appropriate signatures and return one copy to us, along with a
copy of the December 2007 resolution.
Please call me with any questions at 315-655-8161.
Sincerely,
STEARNS& L
WHELER LLC
4�oy1
P. Carpenter, P.E.
Senior Project Manager
Enclosures (4)
cc: G. C. Hook, P.E., Stearns & Wheler (w/o enclosure)
J:V000MUil AWord P.Mxit.t a Whitney-TPC03.dor/.W One Remington Park Drive
Cazenovia, NY 13035
t. 315.655.8161
f. 315.655.4180
W w W.Stearnswheleroom
Cnnnanlirnd . MaMand . Maoannheaeas. New Ynrk . Nnrth Carmins . Viminia
[ j STEARNS & WHELER- AMENDMENT NO.2
Environmental Engineers & Scientists
TO AGREEMENT BETWEEN
ITHACA AREA W WTP — SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Steams & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, one of the improvements included repair to the brick on the secondary digester; and
WHEREAS, OWNER desires to consider various options for the repair of the digester walls; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
ENGINEER shall provide the following services in completion of this project.
1. Continued coordination of the project through 2006 and 2007, without being able to begin design.
2. Preparation of a cost estimate for adding a brick knee wall to the digester repair options.
PROJECT COSTS
OWNER shall pay ENGINEER for the above Scope of Services for a Lump Sum Fee of $7,000.
HUMAN RIGHTS COMPLIANCE
ENGINEER shall not discriminate against any employee, applicant for employment, subcontractor,
supplier of materials or services, or program participant because of actual or perceived age, creed, color,
disability, ethnicity, familial status, gender, height, immigration or citizenship status, marital status,
nation origin, race, religion, sexual orientation, socio-economic status, or weight.
WAWordPmo S&W Anxi)A PN1hwe WWO Moo Inmv Am.M 8250116.doc
AMENDMENT NO.2
ITHACA AREA W WTP — SJS OWNERS
AUTHORIZATION
The return of one (1) signed copy of this Amendment No. 2, together with a copy of a formal resolution
of approval, constitutes acceptance of this Amendment and shall be written authorization for
ENGINEER to proceed with the Scope of Services outline above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 2 as of the
last date entered below.
PC 10 0 M
STEARNS & LER,LLC
By: �
ald C. Ho P.E.
Title: President/CEO
Date: I b>4J
TOWN OF ITHACA, NEW YORK
Title: Supervisor
L
Date:y/ o F
GCH/jlb/mvt
OWNER:
CITY OF ITHACA, NEW YORK
By:
arolyn K. Peterson
Title: Mayor
Date: 1I Z qI tj
TOWNZOFRYDEN, NEW YORK
RV. xz
,Mary Ann Stunner
Title: Supervisor
Date: Z —/5 O
W1W.,&.)S&W Amnx1 QOWth. WWI? M6c Inn A.VMI16.d.
AMENDMENT NO.2
rMACA AREA W WTP — SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this day of 2003, before me, the subscriber, personally appeared
Carolyn K. Peterson, o me known and known to me to be the Mayor of the City of Ithaca, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
PATRICIA DUNN
Notary Public, State of New York
No. 4948393
Qualified in Tompkins County
Commission Expires March 20, 20�
STATE OF NEW YORK
a rCc �
Notary Public
) SS:
COUNTY OF TOMPKINS )
On this -day of i 2 10q�before me, the subscriber, personally appeared herb
Engman, to me known and known to me to be the Supervisor of the Town of Ithaca, New York, the
OWNER described herein, and who, being duly authorized, executed the same on behalf of the
Notary Public
KAREN M. BILLINGS
Notary Public, State of New York
No. 01 BI6179590
Qualified in Tompkins Coun
Commission Expires December 2 , 2011
W:\WwdPrx\S&WA n&200791huq WWTP Mk1nVrov A"nd N2 W[16.dn
AMENDMENT NO. 2
ITHACA AREA W W TP — SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this day of 200;r before me, the subscriber, personally appeared Mary
Ann Sumner, to me known and known to me to be the Supervisor of the Town of Dryden, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Notary Public
BAMBIL.HOLLENBECK
NOTARY PUBLIC, State of New Yak
No.4634073
Qualified in TomPklns Cr xy
My Canedssbo E*MJUW i0. 201 U
STATE OF NEW YORK )
) SS:
COUNTY OF MADISON )
a-oa,19
On this ,T—a day �2$47, before me, the subscriber, personally appeared
41
Gerald C. Hook, P.E., to me known and known to me to be the President/CEO of the firm of Stearns &
Wheler, LLC, the ENGINEER described herein, and who executed the same for the act and deed of said
firm.
tz Notary Public
JUDITH F. SUTHERLAND
Notary Public, State of New York
No.OISU4770407
Qualified in Madison County
Commission Expires March 30, 20 2D
WAWoWmc%S&W AmnQQMVN a WWrP Ma Impmv Amrnd 1250116Aoc
I & STEARNS & WHELER
Environmental Engineers & Scientists
April 14, 2008
Mr. Erik Whitney, P.E.
Assistant Superintendent of Public Works
City of Ithaca DPW
510 First Street
Ithaca, NY 14850
Re: Amendment #3 for Design Phase Services & Bidding Phase Services
S&W No. 50116.0
Dear Mr. Whitney:
A revised version of Amendment #3 to our contract is attached for your review and then for signature by
the various signatory entities. This version of Amendment #3 varies from the old version only in that we
have added the design fee for the metal cladding on both digesters. Please obtain the signatures and send
an executed copy back to my attention.
As you requested, I have reviewed the construction cost estimates for the work proposed for this summer.
The following table shows the original March 2007 estimates, along with an April 2008 update. The
April 2008 update shows an across-the-board increase of 10% on construction costs, and reflects the
metal cladding option instead of brick repair. As you are aware, pricing in the construction market is
changing quickly, and these estimated costs can only be used as a guideline.
Item
March 2007 Estimate
Aril 2008 Estimate
Crack Repair
$240,000
$264,000
Roof Replacement
$400,000
$440,000
Entrance Structure Anchors
$35,000
$38,500
Walkway Resurfacing
$46"w 1-10 k
44 0 r321,
ASR Treatment
$160,000
$176,000
Digester Cladding
$340,000
$200,000
Total
$1,335,000
$1,294 500
Please review and contact me with any questions.
Sincerely,
SSTTEARNS & WHELER LLC
Tim P. Carpenter, P.E.
Senior Project Manager
Enclosures
1:voo4msoi i4\wwd eay.mmu:dx wnimry-Trcwda.a« One Remington Park Drive
Cazenovia, NY 13035
t. 315.655.8161
f.315.655.4180
www.slearnswheler.com
Connecticut - Maryland • Massachusetts • New York • North Carolina • Virginia
36 STEARNS & WHELER
Environmental Engineers & Scientists
AMENDMENT NO.3
TO AGREEMENT BETWEEN
ITHACA AREA WWTP—SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Stearns & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
A. Design Phase Services. ENGINEER shall prepare bid documents for the items listed below.
Roof replacement over the thickener area, Solids Handling Building, and Digester Building.
2. Alkali -silica reaction concrete wall maintenance using a lithium -based product.
3. Concrete wall crack repair.
4. Concrete deck surface repair, including spall repair and new walking surface coating.
5. Structural repair to Entrance Structure Number 2.
6. Digester brick repair using metal panels.
ENGINEER shall prepare draft bid documents and review with the SJC prior to the final printing of bid
documents.
B. Bidding Phase Services. Upon approval of the bid documents by the SJC, ENGINEER shall
supply fifteen (15) copies of the bid documents to the SJC for use in executing the project.
ENGINEER shall also assist OWNER during the Bidding Phase by attending SJC meetings, as
needed, responding to inquiries from contractors, and making recommendations on contract award.
PAYMENTS TO ENGINEER
ENGINEER shall perform the above scope of services for the lump sum fee of $35,500.
W_\Wordhwo &W Awn&2006Ut a WWP Mac Invrov Amc Nl M116.d
AMENDMENT N
ITHACA AREA W WTP - SJS OWNERS
(PAGE 2)
Project Schedule. ENGINEER shall begin work on the bid documents immediately upon receipt of an
executed copy of this amendment, and will supply draft documents for SJC review approximately 4
weeks after receiving written authorization to proceed.
HUMAN RIGHTS COMPLIANCE
ENGINEER shall not discriminate against any employee, applicant for employment, subcontractor,
supplier of materials or services, or program participant because of actual or perceived age, creed, color,
disability, ethnicity, familial status, gender, height, immigration or citizenship status, marital status,
nation origin, race, religion, sexual orientation, socio-economic status, or weight.
AUTHORIZATION
The return of one (1) signed copy of this Amendment No. 3, together with a copy of a formal resolution
of approval, constitutes acceptance of this Amendment and shall be written authorization for
ENGINEER to proceed with the Scope of Services outline above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 3 as of the
last date entered below.
ENGINEER:
STEARNSnWHELER� C} 1
Gerald . Hook, P.E.
Title: President/CEO
Date: Y !Y D
TOWN OF ITHACA, NEW YORK
Title: Supervisor
Date:—
GCH/TPC/jlb/mvl
OWNER:
CITY OF ITHACA, NEW YORK
By: a4mv, /C. --
Carolyn K. Peterson
Title: Mayor
Date: b - 1. 06
TOWN OF DRYDEN, NEW YORK
' ✓ate._ ����
Title: Supervisor
Date:—/
W Mor6PmdS&W Amnd MM11h.a WWTP Mis, Improv Amnd NJ 50116.6DC
AMENDMENT NO] 3
ITHACA AREA W WTP — SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this ( `day of 0 2008, before me, the subscriber, personally appeared
Carolyn K. Peterson, to me known and known to me to be the Mayor of the City of Ithaca, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
v
Notary "Mmrq Public, State of New York
No. 02H05027243
Qualified in Tompkins County
Commission Ext.... ; R,ay 2 j aq 10
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this b r4ay of k4 LC K-A - 2008, before me, the subscriber, personally appeared Herb
Engman, to me known and known to me to be the Supervisor of the Town of Ithaca, New York, the
OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
i� e
Notary Public 61
KAREN M. BILLINGS
Notary Public, State of New York
No. 01816179590
Qualified In Tompkins Counttyy
Commission Expires December 2d, 2011
W\Wor&roCL&W AmeMrWVIM1 ZWWTP Muc Jn vAm #350116d
AMENDMENT NO.3
ITHACA AREA W WTP - SJS OWNERS
(PAGE 4)
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this � day of :JG� 2008, before me, the subscriber, personally appeared Mary
Ann Sumner, to me known and known to me to be the Supervisor of the Town of Dryden, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Notary Public
BAMBI L HOLLENSECK
NOTARY PUBLIC, State of Nei:�'foh
No.4634073
Owlifled in Tompkins Cr ...y
My Cowasion Ezpkes JI„x V, 20 1 L)
STATE OF NEW YORK )
SS:
COUNTY OF MADISON )
On this%� day of 2008, before me, the subscriber, personally appeared
Gerald C. Hook, P.E., to me known and known to me to be the President/CEO of the firm of Stearns &
Wheler, LLC, the ENGINEER described herein, and who executed the same for the act and deed of said
firm.
JUDITH F. SUTHERIAND
Notary NI1440� Yod
o 0SU7707
CIsallon Expires March 30 20
W iWor&P %S&W A,nd,20aBU WWTP M&c 1mmv Amend I330116.d
STEARNS & WHELER- AMENDMENT NO. 4
Environmental Engineers & Scientists
TO AGREEMENT BETWEEN
ITHACA AREA WWTP — SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Stearns & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
A. Construction Phase Services. ENGINEER shall provide the following services during the
construction phase of the Miscellaneous Plant Improvements Project:
1) Shop drawing review and approval.
2) Negotiations with OWNER and Vendors concerning change orders and value
engineering.
3) Periodic observations of the work.
4) Attendance at SJC meetings when requested.
PAYMENTS TO ENGINEER
ENGINEER shall perform the above scope of services on an hourly fee plus reimbursable expenses
basis, and estimates that the total fee will not exceed $14,000. ENGINEER will notify OWNER in
writing when effort reaches 80% of the expected maximum fee, or $11,200.
PROJECT SCHEDULE
ENGINEER shall begin work immediately upon receipt of an executed copy of this amendment.
HUMAN RIGHTS COMPLIANCE
ENGINEER shall not discriminate against any employee, applicant for employment, subcontractor,
supplier of materials or services, or program participant because of actual or perceived age, creed, color,
disability, ethnicity, familial status, gender, height, immigration or citizenship status, marital status,
nation origin, race, religion, sexual orientation, socio-economic status, or weight.
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AMENDMENT NO.4
ITHACA AREA W WTP - SJS OWNERS
AUTHORIZATION
The return of one (1) signed copy of this Amendment No. 4, together with a copy of a formal resolution
of approval, constitutes acceptance of this Amendment and shall be written authorization for
ENGINEER to proceed with the Scope of Services outline above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 4 as of the
last date entered below.
ENGINEER:
STEARNS & WHELER, LLC
By: - e
Gerald t Hook, P.E.
Title: President/CEO
Date:
TOWN OF ITHACA, NEW YORK
By:
I0 Engn
Title: Supervisor
Date: /e7) S�
GCH/TPC/mvl
Chi./�� ► .
CITY OF ITHACA, NEW YORK
I: I_.,t yrl;uv. A��-
CUxolyn K. Peterson
Title: Mayor
Date: Ct - f i iV
TOWN OF DRYDEN, NEW YORK
By
Mary Ann Sumner
Title: Supervisor
Date: / D —2 ID
401,
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AMENDMENT NO. 4
ITHACA AREA WWTP — SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this ) 5` ' day of _SC¢)W� , 2008, before me, the subscriber, personally appeared
Carolyn K. Peterson, to me known and known to me to be the Mayor of the City of Ithaca, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Aandi'ki It P M _ 60)LOn i
Notary Public
KHANDIKILE P.M. SOKONI
Notary Public, State of New York
No.02SO6020493
Qualified in Tompkins County
Commission Expires March 01, 20 It
STATE OF NEW YORK
) SS:
COUNTY OF TOMPKIN//S�� )
On this I) day of (J(� ilCiy% �✓ 2008, before me, the subscriber, personally appeared Herb
Engman, to me known and known to me to be the Supervisor of the Town of Ithaca, New York, the
OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Notary Public
CARRIE WHITMORE
Notary Public, State of New York
No. T019 877
County
Commission Expires December 26, Uf
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au. ►11u1 ► ►a
ITHACA AREA W WTP — SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this -,I±— day of (� r l , 2008, before me, the subscriber, personally appeared Mary
Ann Sumner, to me known and known to me to be the Supervisor of the Town of Dryden, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Notary Public
aAMBI L. HOLLENBECK
NOTARY PUBLIC, State of New YA
Na 46M73
QpMetl in Tonpkkn Cc,nry
WCpnNW Ea @aJum30,20.E
STATE OF NEW YORK )
) SS:
COUNTY OF MADISON )
On thisy ' ' day of 2008, before me, the subscriber, personally appeared
Gerald C. Hook, P.E., to me known and known to me to be the President/CEO of the firm of Steams &
Wheler, LLC, the ENGINEER described herein, and who executed the same for the act and deed of said
firm.
04 J
Notary Public
JOANNE L. BARTELL
Notary Public, State of New York
No. 01 BA6062052
Qualified In Madison County
Commission Expires July 30, 20
W\WordPro &W AmrnMWVt WWTP Mk 1n ,M H50116,d
STEARNS & WHELER"
Environmental Engineers & Scientists
AMENDMENT NO.5
TO AGREEMENT BETWEEN
ITHACA AREA W WTP — SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Steams & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
A. Design New Septage Unloading Facility. ENGINEER shall provide the following services during
the design and construction phases of the Septage Unloading Facility:
1) Meet with owner to determine amount and characteristics of septage to be received.
2) Prepare preliminary design documents for OWNER review at approximately 30% completion
of design phase.
3) Design documents shall include civil, mechanical, and electrical components of the septage
receiving station.
4) Prepare a cost estimate of the work for OWNER review after the 30% design phase.
5) Incorporate OWNER comments from 30% design review and prepare final bid documents for
OWNER review.
6) Meet with OWNER to review 90% complete bid documents, and incorporate any required
changes into the final bid documents.
7) Prepare up to 30 sets of bid documents and assist OWNER with distribution of documents to
plan rooms.
8) Schedule and attend a pre -bid meeting at the OWNER's facility.
9) Respond to contractor questions, and issue addenda as required.
10) Review bids and make a written recommendation to OWNER about award of contract.
11) Review Shop Drawings from contractors.
12) Attend a pre -construction conference with contractors.
13) Monitor project progress by visiting the project site and periodically observing the work, for a
maximum of 6 observations.
14) Attend progress meetings at the Ithaca Wastewater Treatment Plant as required during the
duration of the project.
15) Prepare record drawings of the work based on consultation with contractors.
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ITHACA AREA W WTP - SJS OWNERS
PAYMENTS TO ENGINEER
ENGINEER shall perform the above scope of services for a lump sum fee of $135,500.
PROJECT SCHEDULE
ENGINEER shall begin work immediately upon receipt of an executed copy of this amendment, and
anticipates delivery of the final bid documents five (5) calendar months after receipt of an executed copy
of this amendment.
HUMAN RIGHTS COMPLIANCE
ENGINEER shall not discriminate against any employee, applicant for employment, subcontractor,
supplier of materials or services, or program participant because of actual or perceived age, creed, color,
disability, ethnicity, familial status, gender, height, immigration or citizenship status, marital status,
nation origin, race, religion, sexual orientation, socio-economic status, or weight.
AUTHORIZATION
The return of one (1) signed copy of this Amendment No. 5, together with a copy of a formal resolution
of approval, constitutes acceptance of this Amendment and shall be written authorization for
ENGINEER to proceed with the Scope of Services outline above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 5 as of the
last date entered below.
ENGINEER:
STEARNS & WH{ELER, LLC
By: rL
WVyne E. McFarland, P.E.
Title: Vice President
Date: `7'' I a
.1MUNK).il
CITY OF ITHACA, NEW YORK
By: " 11- O&��
arolyn K. Peterson
Title: Mayor
Date: 3 /L 5-10 9
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AMENDMENT NO.5
ITHACA AREA W WTP — SJS OWNERS
TOWN OF rIHACA, NEW YORK TOWN OF DRYDEN, NEW YORK
ByA'kyrb
By'
En gt ary Ann Sumner
Title: Supervisor Title: Supervisor
Date: /��� Date: �j — Z `�
GCH/TPC/mvl
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
�}
On this 7-5 day of Y" 1 �Cr20A, before me, the subscriber, personally appeared
Carolyn K. Peterson, to me known and known to me to be the Mayor of the City of Ithaca, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Yolk
Notary
in Nassau County
Ynires March 22.2111
STATE OF NEW YORK
Notary Public
) SS:
COUNTY, /OF TOMPKINS )
On this 0"7`day of 204 before me, the subscriber, personally appeared Herb
Engman, to me known and known to me to be the Supervisor of the Town of Ithaca, New York, the
OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
KAREN M. BILLINGS
Notary Public, State ofNew York
No. �l
Qualified in Tompkins Countyy
commission Expires December 24. 2011 Notary Public
WAWwdPm%&w Ams�oObUd WWIP Mic 1mwv Amend M5 MI 16.d%
AMENDMENT NO.5
ITHACA AREA W WTP — SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this � 46 day of,--M&lc k.— , 2008, before me, the subscriber, personally appeared Mary
Ann Sumner, to me known and known to me to be the Supervisor of the Town of Dryden, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
OWNER.
Notary Public
6AMBI L. HOLLENBECK
NOTARY PUBLIC, State of New York
No, 46MO73
Quatl6ed In Tompkins Cn „ty
My commission Eaplow Jum 30, 20J
STATE OF NEW YORK )
) SS:
COUNTY OF MADISON )
On this - 9 day of 1C Q79- I 2008, before me, the subscriber, personally appeared
Wayne E. McFarland, P.E., to me known and known to me to be the Vice President of the firm of
Stearns & Wheler, LLC, the ENGINEER described herein, and who executed the same for the act and
deed of said firm.
(2AA-e—
Notary Public
JOANNE L. BARTELL
Notary Public, State of New York
No. 01 BA6062052
Qualified in Madison County
Commission Expires July 30, 20
W9WordPmcA &W AmenMOOBWhs WWTP Misc Improv Amcnd 4550116 doc
.,
L STEARNS & WHELER"
Environmental Engineers & Scientists
AMENDMENT NO. 6
TO AGREEMENT BETWEEN
ITHACA AREA W WTP — SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Stearns & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
A. Digester Gas System Study — ENGINEER shall provide the following services:
1) Meet with OWNER to review the scope of work and gather digester gas production and usage
information.
2) Evaluate the maintenance and performance records of the existing engine generators.
3) Evaluate the performance of the existing heat transfer system, including pumps and heat
exchangers.
4) Evaluate the condition of the existing boilers.
5) Propose new options for utilization of the digester gas produced, including:
a) Refurbishment of existing engine equipment to maximize the use of digester gas.
b) Refurbishment or replacement of boilers.
c) Replacement of existing engines with new engines.
d) Replacement of existing engines with new microturbines.
e) Replacement of existing engines with direct drive motors for the main influent pumps.
f) Replacement of existing engines with new sterling engines.
6) Make recommendations on the amount of digester gas cleaning for each proposed option.
7) Prepare preliminary cost estimates of each option identified, along with an estimate of what
percentage of digester gas could be consumed with the option.
8) Prepare 20 paper copies of a preliminary report with the information developed, and meet with
OWNER in Ithaca to review the report.
9) Incorporate any comments from the review into a final report and prepare 20 copies of the final
report for OWNER's use.
WiWOramc S&W �W$48 aca WWPP Misc lWrov A=M M 50116.d
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AMENDMENT NO.6
ITHACA AREA W WTP — SJS OWNERS
PAYMENTS TO ENGINEER
ENGINEER shall perform the above scope of services for a lump sum fee of $34,800.
PROJECT SCHEDULE
ENGINEER shall begin work immediately upon receipt of an executed copy of this amendment, and
anticipates delivery of the preliminary report three (3) months after receipt of an executed copy of this
amendment.
HUMAN RIGHTS COMPLIANCE
ENGINEER shall not discriminate against any employee, applicant for employment, subcontractor,
supplier of materials or services, or program participant because of actual or perceived age, creed, color,
disability, ethnicity, familial status, gender, height, immigration or citizenship status, marital status,
nation origin, race, religion, sexual orientation, socio-economic status, or weight.
AUTHORIZATION
The return of one (1) signed copy of this Amendment No. 6, together with a copy of a formal resolution
of approval, constitutes acceptance of this Amendment and shall be written authorization for
ENGINEER to proceed with the Scope of Services outline above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 6 as of the
last date entered below.
ENGINEER:
STEARNS & WHELER, LLC
By: LL�Z u
a e E. McFar an P.E.
Title: Vice President
Date: I a ('`a
TOWN OF ITHACA, NEW YORK
Herb Engman
Title: Supervisor
Date:
OWNER:
CITY OF ITHACA, NEW YORK
Carolyn K. Peterson
Title: Mayor
Date:
TOWN OF DRYDEN, NEW YORK
Mary Ann Sumner
Title: Supervisor
W.\Woa Prmc &W Amro�W"Ihxca W WIP Mac 1r rov A d #6 50116.d c
7
AMENDMENT NO.6
ITHACA AREA W WTP - SJS OWNERS
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this day of , 2008, before me, the subscriber, personally appeared
Carolyn K. Peterson, to me known and known to me to be the Mayor of the City of Ithaca, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
30 '
Notary Public
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this day of , 2008, before me, the subscriber, personally appeared Herb
Engman, to me known and known to me to be the Supervisor of the Town of Ithaca, New York, the
OWNER described herein, and who, being duly authorized, executed the same on behalf of the
e
Notary Public
WAWorew'S&WA &2008\1d nW F Mk 1"rm Arrmd M 50116.dm
J,
STATE OF NEW YORK )
) SS:
COUNTY OF TOMPKINS )
On this day of
AMENDMENT NO.6
ITHACA AREA WWTP — SJS OWNERS
2008, before me, the subscriber, personally appeared Mary
Ann Sumner, to me known and known to me to be the Supervisor of the Town of Dryden, New York,
the OWNER described herein, and who, being duly authorized, executed the same on behalf of the
161E+0"".
Notary Public
STATE OF NEW YORK )
) SS:
COUNTY OF MADISON )
On this J—M day of 4, 2008, before me, the subscriber, personally appeared
Wayne E. McFarland, P.E., to me known and known to me to be the Vice President of the firm of
Stearns & Wheler, LLC, the ENGINEER described herein, and who executed the same for the act and
deed of said firm.
Notary Public
JOANNE L. BARTELL
Notary Public, State of New York
No.01BA6062052
Ouallfled In Madison County
�q
Commission Expires July 30. 20-
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STEARNS & WHELER U�' U AMENDMENT NO.7
Environmental Engineers & Scientists
TO AGREEMENT BETWEEN
ITHACA AREA WASTEWATER TREATMENT PLANT SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Steams & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
Crane -Hogan Lawsuit Assistance
ENGINEER understands that Crane -Hogan has filed a lawsuit concerning the Tertiary Phosphorus
Removal System installation constructed in 2004 and 2005. ENGINEER's involvement in this lawsuit
may include the following effort:
1. Investigation of project records to find correspondence, shop drawings, test results, or other
information;
2. Travel to and participation in meetings at the Ithaca Area Wastewater Treatment Plant or other
locations;
3. Participation in teleconferences; and
4. Preparation of notes, memorandums, and letters detailing project history
PAYMENTS TO ENGINEER
ENGINEER shall perform the Scope of Services described above on an hourly labor plus reimbursable
expenses basis at the direction of the Superintendent of Public Works or the Assistant Superintendent of
Public Works, and will charge our actual salary rates with a multiplier of 2.37. The actual cost of travel
and other expenses will be marked up 5 percent and shown on the invoices. Monthly invoices will be
submitted detailing ENGINEER's effort and expenses. The total amount of effort authorized under this
amendment will not exceed $10,000. If effort in excess of the $10,000 limit is required, ENGINEER
shall submit a separate amendment to the contract.
N WS.Cvamvs\S WoAd M"iniMveG pV W MieiWS]MO W Md'dioml Service Am 7050116"W51A
AMENDMENT NO. 7
ITHACA SJC
it (PAGE 2)
PROJECT SCHEDULE
ENGINEER shall begin work when authorized by OWNER and continue to work on authorized items
until OWNER informs ENGINEER to cease work.
AUTHORIZATION
The return of one signed copy of this Amendment No. 7, together with a copy of a formal resolution of
approval, constitutes acceptance of this Amendment and shall be written authorization for ENGINEER
to proceed with the Scope of Service outlined above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 7 as of the
last date entered below.
ENGINEER:
STEARNS & WHELER, LLC
By:— u( C
Gerald C. hook, P.E.
Title: President
Date:�y�l o0
TOWN OF ITHACA, NEW YORK
La
Herb Engman
Title: Supervisor
Date:
GCH/TPC/jlb
OWNER:
CITY OF ITHACA, NEW YORK
M
Carolyn K. Peterson
Title: Mayor
Date:
TOWN OF DRYDEN, NEW YORK
Mary Ann Sumner
Title: Su�rvisor
Date:
N.WSTaunovWS WoA"pu mw.u'Ao'y wAme OlWth SIC Mditi*e Swim Am 74MI I6MMS I
AMENDMENT NO. 7
ITHACA SJC
(PAGE 3)
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this day of in the year 2010, before me, the
undersigned, personally appeared Herb Engman, personally known to me or proved to me on the basis
of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
STATE OF NEW YORK )
) ss:
COUNTY OF MADISON )
On this day of in the year 2010, before me, the
undersigned, personally appeared Gerald C. Hook, P.E., personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N\U C.al5& WO'k mP Eminim Gr-I\SRW MaM20MW .SIC Addl S .A 005011se MSId
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A
AMENDMENT NO. 7
(PAGE 4)
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this
day of
in the year 2010, before me, the
undersigned, personally appeared Carolyn K. Peterson, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this
day of
Notary Public
in the year 2010, before me, the
undersigned, personally appeared Mary Ann Sumner, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N\USA no .\M@ Wortgt au dminim.lrveO p�WAm GINW SIC MdnmWSe mAmmo9M501Ib8614051.
IlkST�EAR�NS9ers &e�OWHEBER" py AMENDMENTNO.8
Envi
TO AGREEMENT BETWEEN
ITHACA AREA WASTEWATER TREATMENT PLANT SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Steams & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
Miscellaneous Engineering Assistance
There are a number of items at the plant requiring engineering assistance prior to repair. In particular,
concrete cracks and displacement, possibly due to differential settling of slabs and walls, have caused
visible leaks and cracks that need repair to prolong the life of the plant. After discussion with the Chief
Operator, ENGINEER proposes to provide the following services to assist OWNER with the repair and
ongoing maintenance of the plant.
1. Leaking Concrete Conduit between Final Settling Tanks and Tertiary System. This elevated
concrete conduit is leaking at the concrete joint and needs to be repaired. We will determine what
options are available to reduce or eliminate the leak, considering: spray on liners or slip -lining the
interior of the channel. We will develop a product recommendation and application specification
keeping in mind that a cleaning and lining product which can be applied to the wet concrete would
greatly aid in installation.
2. High Flow Bypass Weir. The tertiary treatment system has a high flow capacity of 30.0 mgd.
Flows above that rate should be diverted to the plant effluent channel. An appropriate location
exists for such a bypass, and could be fit with a bypass weir to divert flows above a determined
rate. ENGINEER proposes to design an adjustable weir to fit in the existing channel. The design
will include a drawing and specification for the required weir.
3. Blocking of the Original Plant Effluent Elbow. Prior to the addition of the tertiary treatment
system, the plant effluent flowed though a rectangular channel before leaving the plant in a 48-
inch diameter steel pipe. With the addition of the tertiary treatment system, the concrete channel
and one portion of the 48-inch effluent pipe were taken out of service and are normally empty and
dry.
NWSICven RW MMWMtVa P"MiuiM GMPp &W Amv [W1 SIC AMhia SmicuA WM M30I WU14051d
oe-nm
AMENDMENT NO.8
SJ
ITHACA SJC
(PAGE 2)
Plant effluent water used for various purposes at the plant was historically withdrawn from the
effluent stream at the junction of the concrete channel and 48-inch steel pipe. The historical plant
effluent withdrawal point is currently dry, so plant effluent water for use around the plant is
currently withdrawn from a location downstream of the tertiary treatment process, which has
caused some problems when sand and iron containing byproducts are introduced to the plant
effluent water system. The original plant effluent water withdrawal point can be restored to service
by blocking the 48-inch steel piping segment and allowing the rectangular effluent channel to be
normally flooded. The use of a 48-inch diameter pipe plug will be investigated, as well as other
methods. ENGINEER proposes to provide a drawing and specification to seal the 48-inch pipe
segment in a manner which would allow the segment to be placed back into service in the future, if
needed.
4. Aeration Trough Leak Repairs. The effluent trough which serves the aeration basins has a large
crack constantly leaks. ENGINEER proposes to prepare a repair drawing and specification to
reduce or eliminate this leak.
5. Thickener Leak Repair. The two sludge thickeners have begun to leak at several places
(approximately 3 to 6 locations). At the time of ENGINEER's site visit, one thickener was empty
and clean, allowing visual inspection of the interior of the concrete ring. ENGINEER proposes to
study repair methods and make a recommendation on how to repair the leaking joints. ENGINEER
shall prepare a drawing and written specification for this item.
6. D-Boa Leak Repairs. The D-Box is located next to the main influent splitter box and currently
leaks into the gallery below. The location of the leaks does not allow for the "drill and inject"
method of leak repair used around the plant within the last year. ENGINEER proposes to prepare a
drawing and specification to dewater, bypass pump, clean, and line the interior concrete surface of
the D-Box to reduce or eliminate the leak.
7. Differential Movement Study. Differential settling of plant components is causing cracks in
concrete walls and slabs, along with leaks. In order to determine the rate of change of settling
between structures, ENGINEER proposes to outline a differential movement study to quantify the
amount of movement between different points around the plant. ENGINEER shall identify a
number of measurement locations (approximately 50 to 100 locations) where the distance between
two opposing walls can be measured using an instrument with accuracy of approximately 1.0
millimeter. ENGINEER's proposed plan is to include a recommendation on how often the
measurements should be taken by plant operators (biweekly or monthly readings are envisioned),
how the readings should be stored, and what type of measurement instrument should be used. The
plan will include a recommendation on the need for the addition of metal or laminate measurement
plates to be attached to the concrete walls in question. A section on instrument calibration will also
be included in the study. The intent of the study will be to compile records of the movements at the
plant in order to make timely decisions about future repairs.
N1UStGunoda6&MWm"ppWminiAmjwGoup\T WA,n OI Wt SIC Additions Sw Am 6I501165614051E
AMENDMENT NO. S
[THACA SfC
(PAGE 3)
PAYMENTS TO ENGINEER
ENGINEER shall perform the Scope of Services described above on a Lump Sum basis as itemized
below.
Item
• �
„< C�ta; ' _ ?'_ :'
Te—a—king Concrete Conduit Repair Design
$5,500
High Flow Bypass Weir Design*
$0
Design to Block the Original Plant Effluent Elbow
$5,500
Aeration Trough Leak Repair Design
$5,500
Thickener Leak Repair Design
$5,500
D-Box Leak Repair Design
$7,500
Differential Movement Study Outline
$4,000
Total**
$33,500
* No charge for this item as previously agreed to by ENGINEER.
** These items may be authorized individually or for a total of $33,500.
PROJECT SCHEDULE
ENGINEER will begin work immediately and complete the proposed work within six (6) months of
authorization to proceed.
AUTHORIZATION
The return of one signed copy of this Amendment No. 8, together with a copy of a formal resolution of
approval, constitutes acceptance of this Amendment and shall be written authorization for ENGINEER
to proceed with the Scope of Service outlined above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 8 as of the
last date entered below.
ENGINEER:
STEARNS & WHELER, LLC
US
Gerald C. Hook, P.E.
Title: President
OWNER:
CITY OF ITHACA, NEW YORK
Carolyn K. Peterson
Title: Mayor
Date:
N\US�Cvenovi�lS*W1WmkgrwpWmieitndve 6rouplS*W MrN1I01Wduu SIC Mdkt Savicu MiWi Y501W8614051.d
w
TOWN OF ITHACA, NEW YORK
Herb Engman
Title: Supervisor
GCH/TPC/jlb
AMENDMENT NO.
tTHACA SJC SJC
(PAGE J)
TOWN OF DRYDEN, NEW YORK
0
Mary Ann Sumner
Title: Supervisor
N SU�mu i&l W\WoftmpsWminiomiw&wpl W Amcn 3010WWr S/CMditb Swni �30011&8614051.d
AMENDMENT NO. 8
ITHACA SJC
(PAGE 5)
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this day of in the year 2010, before me, the
undersigned, personally appeared Herb Engman, personally known to me or proved to me on the basis
of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
STATE OF NEW YORK )
) ss:
COUNTY OF MADISON )
On this day of
Notary Public
in the year 2010, before me, the
undersigned, personally appeared Gerald C. Hook, P.E., personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N:1US`C�oviASd:W\Wahgwp�Wimni�uve Oeo00 WAmeiW2010Vd SIC Addnioul Smim A 89501WMId051.d
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this day of
AMENDMENT NO. 8
ITHACA SJC
(PAGE 6)
in the year 2010, before me, the
undersigned, personally appeared Carolyn K. Peterson, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this day of
Notary Public
in the year 2010, before me, the
undersigned, personally appeared Mary Ann Sumner, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N:NJMMnoM&S&NWm VwpMdmininrglnGoupVSRW SJC Additional Srn A=Q8 M50116-8614051.d
TPLI
STEARNS & WHELER- �O �' 11 AMENDMENT NO.7
Environmental Engineers & Scientists
TO AGREEMENT BETWEEN
ITHACA AREA WASTEWATER TREATMENT PLANT SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Steams & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
Crane -Hogan Lawsuit Assistance
ENGINEER understands that Crane -Hogan has filed a lawsuit concerning the Tertiary Phosphorus
Removal System installation constructed in 2004 and 2005. ENGINEER's involvement in this lawsuit
may include the following effort:
1. Investigation of project records to find correspondence, shop drawings, test results, or other
information;
Travel to and participation in meetings at the Ithaca Area Wastewater Treatment Plant or other
locations;
Participation in teleconferences; and
4. Preparation of notes, memorandums, and letters detailing project history.
PAYMENTS TO ENGINEER
ENGINEER shall perform the Scope of Services described above on an hourly labor plus reimbursable
expenses basis at the direction of the Superintendent of Public Works or the Assistant Superintendent of
Public Works, and will charge our actual salary rates with a multiplier of 2.37. The actual cost of travel
and other expenses will be marked up 5 percent and shown on the invoices. Monthly invoices will be
submitted detailing ENGINEER's effort and expenses. The total amount of effort authorized under this
amendment will not exceed $10,000. If effort in excess of the $10,000 limit is required, ENGINEER
shall submit a separate amendment to the contract.
H W31CvewN�45hW1Wohgraq,�AdmieimwrepauplSBW �010 SIC Add'kiWSery A 7 0501 1"61WSI d
FA
AMENDMENT NO. 7
ITHACA SJC
(PAGE 2)
PROJECT SCHEDULE
ENGINEER shall begin work when authorized by OWNER and continue to work on authorized items
until OWNER informs ENGINEER to cease work.
AUTHORIZATION
The return of one signed copy of this Amendment No. 7, together with a copy of a formal resolution of
approval, constitutes acceptance of this Amendment and shall be written authorization for ENGINEER
to proceed with the Scope of Service outlined above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 7 as of the
last date entered below.
ENGINEER:
STEARNS & WHELER, LLC
By: w .
Gerald C. Nook, P.E.
Title: President
Date:
TOWN OF ITHACA, NEW YORK
0
Herb Engman
Title: Supervisor
GCH/TPC/jlb
OWNER:
CITY OF ITHACA, NEW YORK
Carolyn K. Peterson
Title: Mayor
TOWN OF DRYDEN. NEW YORK
LN
Mary Ann Sumner
Title: Supervisor
N:%UlC wvia%B Wo&VmWWdminimdw Group�W Am OINK SIC Addkr nY Service Amend ]#501 I&MI<Odl.d
AMENDMENT NO.7
ITHACA SIC
(PAGE 3)
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this day of in the year 2010, before me, the
undersigned, personally appeared Herb Engman, personally known to me or proved to me on the basis
of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
STATE OF NEW YORK )
) ss:
COUNTY OF MADISON )
On this day of
Notary Public
in the year 2010, before me, the
undersigned, personally appeared Gerald C. Hook, P.E., personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N\UMuer4Ne�Wmk�P-Wminiw ve&MPl WAme 1010 S)C AUitia ServicesA 713011SUW51d
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this
day of
AMENDMENT NO. 7
ITHACA SJC
(PAGE 4)
in the year 2010, before me, the
undersigned, personally appeared Carolyn K. Peterson, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this
day of
Notary Public
in the year 2010, before me, the
undersigned, personally appeared Mary Ann Sumner, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N. W W=mvio\58 Workp pMdminin Live G p�W Ameod30INV SIC Mdnimn Service Mend l Y501168614051 doc
.it
L66 STEARNS & WHELER� AMENDMENT NO.8
Environmental Engineers &Scientists Li 11
TO AGREEMENT BETWEEN
ITHACA AREA WASTEWATER TREATMENT PLANT SJC OWNERS
AND
STEARNS & WHELER, LLC
WHEREAS, Steams & Wheler, LLC (ENGINEER) and the Ithaca Area WWTP — SJC Owners
(OWNER) entered into an Agreement dated September 7, 2005, to evaluate Miscellaneous Plant
Improvements; and
WHEREAS, except as expressly amended herein, all other provisions of the original contract dated
September 7, 2005, remain in full force and effect.
NOW, THEREFORE, ENGINEER and OWNER agree to amend the Agreement as follows.
SCOPE OF SERVICES
Miscellaneous Engineering Assistance
There are a number of items at the plant requiring engineering assistance prior to repair. In particular,
concrete cracks and displacement, possibly due to differential settling of slabs and walls, have caused
visible leaks and cracks that need repair to prolong the life of the plant. After discussion with the Chief
Operator, ENGINEER proposes to provide the following services to assist OWNER with the repair and
ongoing maintenance of the plant.
Leaking Concrete Conduit between Final Settling Tanks and Tertiary System. This elevated
concrete conduit is leaking at the concrete joint and needs to be repaired. We will determine what
options are available to reduce or eliminate the leak, considering: spray on liners or slip -lining the
interior of the channel. We will develop a product recommendation and application specification
keeping in mind that a cleaning and lining product which can be applied to the wet concrete would
greatly aid in installation.
2. High Flow Bypass Weir. The tertiary treatment system has a high flow capacity of 30.0 mgd.
Flows above that rate should be diverted to the plant effluent channel. An appropriate location
exists for such a bypass, and could be fit with a bypass weir to divert flows above a determined
rate. ENGINEER proposes to design an adjustable weir to fit in the existing channel. The design
will include a drawing and specification for the required weir.
3. Blocking of the Original Plant Effluent Elbow. Prior to the addition of the tertiary treatment
system, the plant effluent flowed though a rectangular channel before leaving the plant in a 48-
inch diameter steel pipe. With the addition of the tertiary treatment system, the concrete channel
and one portion of the 48-inch effluent pipe were taken out of service and are normally empty and
dry.
M'US`C=mA&IMW\WowkpwWMU nip6w Gaup�&W Ame ]WW SICMkiwJ Se A ms mmI t&mm51 Aw
oe-u w
AMENDMENT NO.8
SJ
ITHACA SJC
(PAGE 2)
Plant effluent water used for various purposes at the plant was historically withdrawn from the
effluent stream at the junction of the concrete channel and 48-inch steel pipe. The historical plant
effluent withdrawal point is currently dry, so plant effluent water for use around the plant is
currently withdrawn from a location downstream of the tertiary treatment process, which has
caused some problems when sand and iron containing byproducts are introduced to the plant
effluent water system. The original plant effluent water withdrawal point can be restored to service
by blocking the 48-inch steel piping segment and allowing the rectangular effluent channel to be
normally flooded. The use of a 48-inch diameter pipe plug will be investigated, as well as other
methods. ENGINEER proposes to provide a drawing and specification to seal the 48-inch pipe
segment in a manner which would allow the segment to be placed back into service in the future, if
needed.
4. Aeration Trough Leak Repairs. The effluent trough which serves the aeration basins has a large
crack constantly leaks. ENGINEER proposes to prepare a repair drawing and specification to
reduce or eliminate this leak.
5. Thickener Leak Repair. The two sludge thickeners have begun to leak at several places
(approximately 3 to 6 locations). At the time of ENGINEER's site visit, one thickener was empty
and clean, allowing visual inspection of the interior of the concrete ring. ENGINEER proposes to
study repair methods and make a recommendation on how to repair the leaking joints. ENGINEER
shall prepare a drawing and written specification for this item.
6. D-Boa Leak Repairs. The D-Box is located next to the main influent splitter box and currently
leaks into the gallery below. The location of the leaks does not allow for the "drill and inject"
method of leak repair used around the plant within the last year. ENGINEER proposes to prepare a
drawing and specification to dewater, bypass pump, clean, and line the interior concrete surface of
the D-Box to reduce or eliminate the leak.
7. Differential Movement Study. Differential settling of plant components is causing cracks in
concrete walls and slabs, along with leaks. In order to determine the rate of change of settling
between structures, ENGINEER proposes to outline a differential movement study to quantify the
amount of movement between different points around the plant. ENGINEER shall identify a
number of measurement locations (approximately 50 to 100 locations) where the distance between
two opposing walls can be measured using an instrument with accuracy of approximately 1.0
millimeter. ENGINEER's proposed plan is to include a recommendation on how often the
measurements should be taken by plant operators (biweekly or monthly readings are envisioned),
how the readings should be stored, and what type of measurement instrument should be used. The
plan will include a recommendation on the need for the addition of metal or laminate measurement
plates to be attached to the concrete walls in question. A section on instrument calibration will also
be included in the study. The intent of the study will be to compile records of the movements at the
plant in order to make timely decisions about future repairs.
N 1USC�wAa1 & 1Wo,kpWWMminiantive U oupl W Amm OI WI SIC AddUmI Serv'vte Am 105011&M14051 E
10
AMENDMENT NO.B
tTHACA SJC
it (PAGE 3)
PAYMENTS TO ENGINEER
ENGINEER shall perform the Scope of Services described above on a Lump Sum basis as itemized
below.
Itentt 4 por
Leaking Concrete Conduit Repair Design
$5,500
High Flow Bypass Weir Design*
$0
Design to Block the Original Plant Effluent Elbow
$5,500
Aeration Trough Leak Repair Design
$5,500
Thickener Leak Repair Design
$5,500
D-Box Leak Repair Design
$7,500
Differential Movement Study Outline
$4,000
Total**
$33,500
* No charge for this item as previously agreed to by ENGINEER.
** These items may be authorized individually or for a total of $33,500.
PROJECT SCHEDULE
ENGINEER will begin work immediately and complete the proposed work within six (6) months of
authorization to proceed.
AUTHORIZATION
The return of one signed copy of this Amendment No. 8, together with a copy of a formal resolution of
approval, constitutes acceptance of this Amendment and shall be written authorization for ENGINEER
to proceed with the Scope of Service outlined above.
IN WITNESS WHEREOF, the parties hereto have made and executed this Amendment No. 8 as of the
last date entered below.
ENGINEER:
STEARNS & WHELER, LLC
Gerald C. Hook, P.E.
Title: President
OWNER:
CITY OF ITHACA, NEW YORK
0
Carolyn K. Peterson
Title: Mayor
N:1UWvnwWSAMWoekpavp,Udm iNmtiveO PNS&W AmeNV010U VC AddWn Service 105011&8614051.d
TOWN OF ITHACA, NEW YORK
Herb Engman
Title: Supervisor
GCI /TPC/jlb
AMENDMENT NO. 8
ITHACA SJC
(PAGE 4)
TOWN OF DRYDEN, NEW YORK
M
Mary Ann Sumner
Title: Supervisor
Date:
N\USLvemvi.�6&Nnwatgdwwmi.iaini.. Gauy�S6:W �016VO SIC A66i,fonlS .A 8 N561148611651,d
AMENDMENT NO. 8
ITHACA SJC
At (PAGE 5)
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this day of in the year 2010, before me, the
undersigned, personally appeared Herb Engman, personally known to me or proved to me on the basis
of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
STATE OF NEW YORK )
) ss:
COUNTY OF MADISON )
On this day of in the year 2010, before me, the
undersigned, personally appeared Gerald C. Hook, P.E., personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
N'\USTb i.lS&WWorkWm*Mmnictt OrmPV WAmeoC IWO SIC AddhicmiS cmA 6M]I&M 14051d
AMENDMENT NO.8
ITHACA SIC
I&A (PAGE 6)
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this
day of
in the year 2010, before me, the
undersigned, personally appeared Carolyn K. Peterson, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
STATE OF NEW YORK )
) ss:
COUNTY OF TOMPKINS )
On this
day of
Notary Public
in the year 2010, before me, the
undersigned, personally appeared Mary Ann Sumner, personally known to me or proved to me on the
basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that by his/her signature on
the instrument, the individual or the person upon behalf of which the individual acted, executed the
instrument.
Notary Public
NGt,u &W Ame DlWta. SIC AMIti..15 .A.M 8#50116-8614051.d
PON STEARNS & WHELER
L'i1 CLIENTOEOPLEIPERFORMANCE
CHANGE ORDER NO. 1
Date: April 10, 2009
Owner:
Ithaca SJC
Contractor:
Hubbard Construction
Project:
Miscellaneous Improvements
Engineer's
50116.23.1
File No.:
Contract No.:
8-01 — General
Government
-
I
I Project No.:
The contractor is hereby authorized and directed to make the changes described below, and agrees to furnish all labor,
materials, and equipment to accomplish the changes in accordance with the applicable portions of the Contract Documents
for this project.
Description of Change (Including Location and Reasons Therefore):
See attached "Description of Change Summary."
Enclosures and References:
See attached "List of Attachments."
In executing this change order, it is mutually agreed that the amounts provided for herein will be accepted by the contractor
as full compensation for all known costs associated in the work, including all direct and indirect costs, and any and all known
costs associated with delays or additional time, if any, which may be required as a result of said changes.
CONTRACT
AMOt1NT
TIME
Original Contract Price
$960,910.00
Substantial Completion Date Prior to Change Order
07/31/09
Contract Price Prior to Change Order
$960,910.00
Final Payment Date Prior To Change Order
08/31/09
Net Amount This Change Order
$5,910.00
Net Time This Change Order
0 days
Revised Contract Price
$966,820.00
Revised Substantial Completion Date
07/31/09
Revised Final Payment Date
08/31/09
ENGINEER
OWNER
CONTRACT R
Steams & Wheler, LLC
Approved:
Approved:
Recommended:
Title:
itle:
s0
Date:
1
Date:
f d
Date:
_
Telephone:
(315)655-8161
Telephone:
607-272-1717
Telephone:
315-685-3791
Remarks:
l . The parry initiating the change order request is Engineer.
2. Does this change order:
a. Affect the work of other contractors? No
b. Require additional work by other contractors? No
C. Constitute entire cost of the change? Yes
1666 0116\Word PraTF sm hmSe Orden\UIdm
CHANGE ORDER NO. 1
PAGE
Description of Change Summary:
Supply and install five skylights not shown on the contract documents.
List of Attachments:
March 25, 2009 letter to Steams & Wheler from Hubbard Construction.
1.\500W\50116\Wwd PmcTP Zhmr OrmWIdw
M. IIUBBARD CONSTRUCTION, INC.
GENERAL CONTRACTORS
4225 Railroad Street, Mottville, New York 13119. (315) 685.3791
March 25, 2009
Stearns & Wheler Engineers
One Remington Park Drive
Cazenovia, NY 13035
Attention: Mr. Tim Carpenter
Re: Ithaca Area Wastewater Treatment Plant - Misc. Improvements
Dear Tim,
With respect to your request for a price to install five additional skylight units we
offer the following:
Furnish all labor, materials and equipment to remove existing skylights and
install new skylights in accordance with the Project Plans and Specifications for
the lump sum price of $ 5,910.00.
If you have any questions or require any additional information, please do not
hesitate to contact us.
Respectfully,
M. Rghbard
dCConst.
Rick Carr