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HomeMy WebLinkAbout98-203 Resolution No. 98-203 RESOLUTION AUTHORIZING EXECUTION OF AN ENGINEERING SERVICES AGREEMENT AMENDMENT NO. 1 WITH BAXTER & WOODMAN, INC. (Otter Creek Pumping Station Force Main) BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF ELGIN, ILLINOIS, that Joyce A. Parker, City Manager, and Dolonna Mecum, City Clerk, be and are hereby authorized and directed to execute an Engineering Services Agreement Amendment No. 1 on behalf of the City of Elgin with Baxter & Woodman, Inc. for the Otter Creek Pumping Station force main, a copy of which is attached hereto and made a part hereof by reference. s/ Kevin Kelly Kevin Kelly, Mayor Presented: August 26, 1998 Adopted: August 26, 1998 Omnibus Vote: Yeas 7 Nays 0 Attest: s/ Dolonna Mecum Dolonna Mecum, City Clerk CITY OF ELGIN, ILLINOIS OTTER CREEK PUMPING STATION, FORCE MAIN INFLUENT SEWER AND BOWES ROAD INTERCEPTOR SEWER - UPSTREAM ENGINEERING SERVICES AGREEMENT AMENDMENT NO. 1 THIS AMENDMENT NO. 1 entered into this 3/ day of A U G , 1998, by and between the CITY OF ELGIN, an Illinois Municipal Corporation (hereinafter referred to as "CITY"), and Baxter & Woodman, Inc., an Illinois Business Corporation (hereinafter referred to as "ENGINEER"), shall modify that Agreement dated 14 September 1995, whereby the ENGINEER was engaged by CITY to perform certain professional services in connection with the preparation of plans, specifications, estimates of cost, bidding and preconstruction award services, and construction related engineering services for the Otter Creek Pumping Station, Force Main, Influent Sewer and Bowes Road Interceptor Sewer- Upstream (hereinafter referred to as "PROJECT"). WHEREAS, the services did not include additional design services to re-design the pumping station site to accommodate an increase in the 100-year flood elevation, and to re-design the pumping station building to provide the architectural treatment required by the Kane County Forest Preserve District, AND WHEREAS, the CITY desires the ENGINEER to provide final design services for said site and architectural revisions, AND WHEREAS, the CITY desires to include the payments to the ENGINEER under the Agreement in connection with the design of the site and architectural revisions. In response to these additional services, certain revisions must be made to the Agreement. In compliance, therefore, the terms and conditions of he Agreement are - 1 - B A X T E R WOODMAN ConsullingEngineers modified as specifically set out below. All other parts of the Agreement remain unchanged. SECTION I of the AGREEMENT is hereby amended to replace Paragraphs A, B, C, D and E with the following Paragraphs A, B, C, D, E, and F: SCOPE OF SERVICES A. All work hereunder shall be performed under the direction of the Director of Public Works of the CITY, hereinafter referred to as the "DIRECTOR". B. The professional services to be provided by the ENGINEER under this Agreement have been divided into two phases as follows: 1. Paragraphs C.1 through C.5 are funded under the lump sum fee identified in Paragraph IV.A. 2. Paragraph D which is not funded under the lump sum fee, but will be funded by an amendment to this Agreement as noted in Paragraph IV. C. In general, the initial professional services to be performed under this Agreement will consist of the following. 1. Preparation of the Final Design Documents of the Otter Creek Pumping Station. The pumping station shall be as described in the Otter Creek Pumping Station- Preliminary Design Report, prepared by the ENGINEER for the CITY and dated October 1993, ENGINEER's Project No. 930630. 2. Preparation of revisions to the Final Design Documents of the Otter Creek Pumping Station to accommodate an increase in the 100-year flood elevation, ENGINEER's Project No. 930630. 3. Preparation of revisions to the Final Design Documents of the Otter Creek Pumping Station to provide the architectural - 2- B A X T E R WOODMAN Consulting Engineers treatment required by the Kane County Forest Preserve District, ENGINEER's Project No. 930630. 4. Preparation of the Final Design Documents of the Otter Creek Force Main. The force main shall extend from the Otter Creek Pumping Station to the Bowes Road Interceptor Sewer terminus manhole located at Randall Road approximately 1,250 feet south of Bowes Road, ENGINEER's Project No. 930849. 5. Preparation of the Final Design Documents of the Otter Creek Pumping Station Influent Sewer. The influent sewer extends approximately 1,400 feet from the Pumping Station site to the confluence of Otter Creek and Fitchie Creek, ENGINEER's Project No. 950510. 6. Preparation of the preliminary line and grade of the Bowes Road Interceptor Sewer - Upstream. The interceptor sewer extends from the Otter Creek Pumping Station Influent Sewer approximately 17,500 feet along Otter Creek and Randall Road to Sandy Creek located about 2,500 feet north of U.S. Route 20, ENGINEER's Project No. 930850. 7. Performance of bidding and preconstruction award services for the Otter Creek Pumping Station, Force Main and Influent Sewer, consisting of the following: a. Bid Document Printing b. Bid Document Distribution c. Pre-Bid Meetings d. Bid Evaluations e. Recommendation for Award D. All field construction phase services, including General Construction Administration and Resident Project Representative, for the Otter Creek Pumping Station, Force Main, Influent Sewer, and selected start-up and operational services will be performed after an amendment is authorized to this Agreement. - 3 - WOODMAN Consulting Engineers E. A detailed Scope of Services for the design, bidding and preconstruction award services described in Paragraphs C.1, C.4, C.5 and C.7 above is attached to the Agreement as Attachment A. F. A detailed Scope of Services for the additional design services described in Paragraphs C.2 and C.3 above is attached hereto as Attachment A-1. SECTION IV of the AGREEMENT is hereby amended to replace Paragraphs A, B, C, D, E and F with the following Paragraphs A, B, C, D, E, F, and G: IV. PAYMENTS TO THE ENGINEER A. The CITY shall reimburse the ENGINEER for professional services described in Paragraphs I.C.1 through I.C.7, a lump sum of two hundred eight thousand four hundred and ninety-two dollars ($208,492), regardless of actual costs incurred by the ENGINEER unless substantial modifications to the PROJECT are authorized in writing by the CITY. B. The CITY shall make periodic payments to the ENGINEER based upon actual progress within thirty (30) days after receipt and approval of invoice. The total value of said periodic payments to the ENGINEER shall not exceed the amounts shown in the following schedule, and the final payments for each task shall not be made until the task is completed and accepted by the DIRECTOR. Final Design Documents Otter Creek Pumping Station $100,000 Force Main 20,000 Influent Sewer 25,000 Bowes Road Interceptor - Upstream 15.000 Subtotal $160,000 Additional Final Design Services Re-design Pumping Station Site $ 10,392 Re-design Pumping Station Building $ 26.100 Subtotal $ 36,492 -4- BAXTER i WOODMAN ConsullingEngineers Assistance During Bidding Otter Creek Pumping Station $ 6,500 Force Main 3,000 Influent Sewer 2.500 Subtotal $12,000 Total $208,492 C. The ENGINEER shall make necessary arrangements and employ qualified subconsultants for all geotechnical services, subject to approval of the DIRECTOR, for the following work: 1. Geotechnical and soils investigations. 2. Wetlands delineation. 3. Plats of property and easement acquisition. 4. MFT project implementation. The CITY shall reimburse the ENGINEER for the direct cost of the above professional subconsultant services, an amount not to exceed Forty-Five Thousand Dollars ($45,000) without a modification to this agreement by a change order or amendment. D. The total payments by the CITY under this agreement under paragraphs IV.A and IV.0 shall not exceed Two Hundred Fifty Three Thousand Four Hundred and Ninety-Two Dollars ($253,492) unless this agreement is modified by a change order or amendment. E. For those services identified under the Scope of Services as Field Construction Phase Services (Section I.D), the fee shall be negotiated between the ENGINEER and the CITY, and this Agreement modified by a change order or amendment, at such time prior to the commencement of the work after a funding appropriation for the project construction has been enacted by the CITY. - 5 - B A X T E R WOODMAN Consulting Enginurs F. A detailed fee breakdown for the design, bidding and preconstruction award services described in Paragraphs I.C.1, I.C.4, and I.C.5 and I.C.7 is attached to the Agreement as Attachment C. G. A detailed fee breakdown for the additional design services described in Paragraphs I.C.2 and I.C.3 is attached hereto as Attachment C-1. SECTION XXVII of the AGREEMENT is hereby amended to replace Paragraph A with the following: A. As to CITY: David L. Lawry Director of Public Works City of Elgin 150 Dexter Court Elgin, Illinois 60120-5555 All other provisions of the AGREEMENT shall remain in full force and effect. B A X T E R E R WOODMAN Consulting Engineers IN WITNESS WHEREOF, the undersigned have placed their hands and seals upon and executed this Agreement in triplicate as though each copy hereof was an original and that there are no other oral agreements that have not been reduced to writing in this statement. For the CITY: ATTEST: THE CITY OF ELGIN, ILLINOIS By . dff ., /- City Clerk ity Manager (SEAL) For the ENGINEER: Dated this day of , A.D., 1998. ATTEST: BAXTER & WOODMAN, INC. BY B , Deputy Secretary President/CE (SEAL) 980153\REV.rwb:rp -7- B A X T E R • WOODMAN Consulting Engineers CITY OF ELGIN, ILLINOIS OTTER CREEK PUMPING STATION, FORCE MAIN, INFLUENT SEWER AND BOWES ROAD INTERCEPTOR SEWER - UPSTREAM ENGINEERING SERVICES AGREEMENT BETWEEN THE CITY OF ELGIN, ILLINOIS AND BAXTER & WOODMAN, INC. AMENDMENT NO. 1 ATTACHMENT A-1 SCOPE OF SERVICES ADDITIONAL FINAL DESIGN SERVICES 1. Revise Site Work Designs to Accommodate Increased Flood Elevation Subsequent to the completion of the pumping station design in March of 1996, the Flood Insurance Rate Map (FIRM) for Kane County was revised on June 4, 1996. The revised FIRM reflects a 2.$ foot increase in the 100-year flood elevation along the west and south fringes of the pumping station site. To accommodate the increased flood elevation, we re-designed the site grading plan, yard piping layout, access road and storm conveyance structures. We moved the pumping station 50 feet east, re-locating the facilities outside of the floodplain. The impacts of these design changes on the general civil drawings are summarized as follows: Structural Buoyancy We re-conducted the buoyancy analysis for the pumping station structure based on the increased 100-year flood elevation. These structural engineering calculations are required by the Illinois Environmental Protection Agency (IEPA) as a condition of their permit to construct, own and operate the pump station. Drawing G1 - Grading Plan Prior to the increase in the flood elevation, the proposed grading plan did not involve filling within the floodplain. The higher floodplain encroaches upon the footprint of the earlier design. As a result, this drawing was re-designed and re-drafted. We moved the building and parking lot east, outside of the floodplain. However, the access road must now cross the floodplain. To facilitate emergency access to the pump station, filling of the floodplain is required. We re-designed the road so that vehicle access to the station during flood conditions is possible. B A X T E R WOODMAN Consulting Engineers Attachment A-1 2. Because the new access road design involves filling within the floodplain, we re- designed the remainder of the site grading plan to provide adequate compensatory storage, as required by the Kane County Development Department, to offset the filling operation. We re-designed the grading of the fenced-in paved area surrounding the building to contain the additional paved and roof area runoff, as required by the Kane County Development Department. To control the release rate of the paved and roof area runoff to the maximum allowed by the County, we re-designed the storm water catch and release structures. We re-designed these structures to work in conjunction with the revised grading of the fenced-in paved area surrounding the building. We also re-designed the storm water culvert beneath the access road, to work in conjunction with the new road design. We developed a specialized precast culvert structure design, necessitated by the limitations imposed between the existing grade and the 100-year flood elevation. The movement of the building to the east encroached on the area which had previously been used to locate a propane gas tank for heating of the pump station dry well. We deleted the propane tank and changed the heating design for the space to an electric heat design. We also incorporated comments received from the Kane County Development Department, including: • Top of foundation elevations were indicated for the pumping station and the transformer pad. ▪ A note regarding drain tile encountered during construction was included. • Drainage directional arrows and overflow routes were added to the plan. • Invert elevations at the box culvert under the access road were called out. • The stage/storage table for the proposed detention area was added to the site plan. • A stockpile area was indicated on the site plan. B A X T E R WOODMAN ConsuhingEngineers Attachment A-1 3, Drawing G2 - Piping Plan We re-designed and re-drafted this drawing to accommodate the relocation of the facilities to the east. The 48-inch influent sewer and 20-inch discharge force main were adjusted to the east. The water well was also moved east, out of the floodplain. We relocated the electric utility power transformer from the north side of the building to the southwest corner of the fenced-in paved area of the site. The buried electrical conduit runs were re-designed to reflect the new transformer location and the modified access road design. Drawing G4- Miscellaneous Details We developed the retaining wall detail shown on this drawing, to compliment the revised grading of the fenced-in paved area surrounding the building. A concrete modular retaining wall specification was developed for inclusion in the Project Manual. In addition, we revised the metering manhole detail shown on this drawing to accommodate installation of a magnetic flow meter, in lieu of a Doppler effect meter, as suggested by the Fox River Water Reclamation District (FRWRD). The Specifications were modified accordingly. Drawing G5- Miscellaneous Details We developed the details for the storm water catch and release structures, which control the runoff release rate from the newly paved and roofed areas, to work in conjunction with the revised grading of the fenced-in paved area surrounding the building. In addition, the specialized precast culvert structure detail, necessitated by the limitations imposed between the existing grade and the 100-year flood elevation, was developed. 2. Revise Superstructure Roof Design and Architectural Treatment The pumping station superstructure was designed in March of 1996 with a precast concrete flat parapet roof. All heating, ventilating and cooling (HVAC) equipment was located on the roof. A screen wall was designed to enclose the equipment and hide it from view. BAXTER WOODMAN ConsuftrngEngrneers Attachment A-1 4. The pump station site is located on property belonging to the Kane County Forest Preserve District. An agreement was reached in the fall of 1997 between the City of Elgin and the Kane County Forest Preserve District for the transfer of local government property (50 ILCS 6/5-10.01 et seq.). A special condition of the agreement states that "The CITY and the DISTRICT agree that the CITY shall have the sanitary sewer pump station designed and constructed in general conformance with the building elevation attached as Exhibit 4." Exhibit 4 illustrates a more residential appearing wood truss roof design, without any HVAC equipment mounted on the roof. We re-designed the building to provide the architectural treatment requested by the Forest Preserve District. The change in the roof design necessitated extensive mechanical, architectural, structural and electrical design changes. We designed a wood truss and truss bracing system for the roof. We developed new details for the soffit and end wall, attic access door and vent roof penetrations. The roof design impacts the structural integrity of the remainder of the structure. We re-designed the walls and pilasters for the side and end walls to reflect the reduced stiffness provided by the roof system. We also re-conducted the masonry wall lateral stability analysis. We re-designed the engine generator silencer support and trolley beam supports to reflect the reduced weight supporting capacity of the roof system. The previous design located all of the HVAC equipment on the roof. We re-designed the system to locate the equipment either inside the building or to be wall mounted on the building exterior. There is not adequate space inside the building to fit all of the HVAC equipment as previously designed. We modified the ventilation designs for the wet well and dry well areas from two-speed systems to single speed designs. In this manner, we were able to reduce the number of large fans so that the equipment would fit in the building. We were also able to reduce the size of the larger fans by including a wall between the wet well and the associated stairwell, which reduced the volume of the space requiring high rate ventilation. To accommodate the addition of this partition wall, we re- designed the equipment access well so that equipment can be lowered in and raised out of the wet well from the outdoors, rather than through the stairwell area. All of the HVAC ductwork had to be rerouted to reflect the new equipment locations. This impacted the structural design because of the modified locations of duct penetrations through the structural floor and wall slabs. Equipment concrete bases were also designed for the now floor mounted equipment. BAXTER WOODMAN Consulting Engineers Attachment A-1 5. The electrical design was also significantly impacted by the modified roof designed. All of the conduit and wiring runs for the HVAC system had to be re-designed and re- drafted. The electrical load lists were also affected, which required re-designed of the control center and circuit sizing. In summary, the re-design of the HVAC system, necessitated by the roof design changes, required changes to nearly every drawing. The impacts of these design changes on the mechanical, structural and electrical drawings are summarized as follows: Drawing MI -Lower Plan The concrete wall between the wet well and the stairwell was added. The electric unit heaters for the pump room were sized and shown. The HVAC ductwork was re-sized and rerouted. The equipment well was incorporated into the wet well substructure design. Drawing M2 - Intermediate Plan The concrete wall between the wet well and the stairwell was added. The electric unit heaters for the pump room were sized and shown. The HVAC ductwork was re-sized and rerouted. The equipment well was incorporated into the wet well substructure design. Drawing M3 - Upper Plan All of the HVAC ductwork was re-designed and rerouted. The wet well ventilation equipment was relocated from the roof into the Chemical Room. The dry well ventilation equipment was relocated from the roof into the Control Room. The Control Room and Generator Room exhaust fans were relocated from the roof to the exterior walls. A utility vent fan was added for ventilation of the wet well stairwell. The chemical feed carrier pipe was rerouted through the wet well to eliminate the chemical manhole previously located east of the building due to the site constraints imposed by the new building location. Drawing M4- Section The roofing system was re-designed and re-drafted. The generator silencer support was revised to accommodate the wood truss roof system. B A X T E R WOODMAN Con.stiffing Engineers Attachment A-1 6. The HVAC ductwork was re-designed and re-drafted. Drawing M5 - Sections The roofing system was re-designed and re-drafted. The generator silencer support was revised to accommodate the wood truss roof system. The HVAC ductwork was re-designed and re-drafted. The chemical feed carrier pipe was rerouted through the wet well to eliminate the chemical manhole previously located east of the building due to the site constraints imposed by the new building location. Drawing M6- Section The roofing system was re-designed and re-drafted. The HVAC ductwork was re-designed and re-drafted. Drawing M7- Sections The roofing system was re-designed and re-drafted. The HVAC ductwork was re-designed and re-drafted. The section through the equipment access well was designed and drafted. Drawing M8- Section "G"and Schematics The roofing system was re-designed and re-drafted. The HVAC ductwork was re-designed and re-drafted. Drawing M9 - Roof Plan The roof plan was completely re-designed and re-drafted. Drawing M12 - Miscellaneous Details B A X Tit; WOODMAN Consulting Engineers Attachment A-1 7. All of the details shown on this drawing were designed and drafted as a result of the roofmg system design change, including: • Vent Stack Detail • Fuel Tank Vent Flashing Detail • End Wall Detail • Soffit Detail • Attic Access Door Detail • Gravity Air Exhaust Vent Curb Detail • Silencer Support Detail Drawing M13 - Exterior Elevations This drawing was completely re-designed and re-drafted to change the roofing system design and architectural treatment of the building. Drawing S1 - Lower Plan - Structural Details The equipment access well was structurally designed and drafted. The concrete wall between the wet well and the stairwell was structurally designed and drafted. Drawing S2 - Intermediate Plan Structural Details The equipment access well was structurally designed and drafted. The concrete wall between the wet well and the stairwell was structurally designed and drafted. Drawing S3 - Intermediate Plan - Structural Details The equipment access well was structurally designed and drafted. The concrete wall between the wet well and the stairwell was structurally designed and drafted. Drawing S4- Upper Plan - Structural Details The equipment access well was structurally designed and drafted. B A X T E R WOODMAN Consulting Engineers Attachment A-1 8. The masonry wall between the wet well stairwell and the Chemical Room was re- designed and re-drafted to accommodate the equipment access well. The wall penetrations for the re-designed HVAC ductwork were located, designed and drafted. The equipment bases for the relocated HVAC equipment were designed and drafted. Drawing S5- Sections - Structural Details The concrete wall between the wet well and the stairwell was structurally designed and drafted. Drawing S9 - Structural Details The Wood Truss Bracing Plan was designed and drafted. The Trolley Beam/Masonry Wall Connection details were re-designed. Drawing El -Lower Plan -Electrical Details The electrical power circuits for the electric unit heaters in the Pump Room were designed and drafted. Drawing E2 - Intermediate Plan - Electrical Details The electrical power circuits for the electric unit heaters in the Motor Room were designed and drafted. Drawing E3 - Upper Plan - Electrical Details The electrical power circuits for the relocated and re-sized HVAC equipment were designed and drafted. Drawing E4 - Motor Control Center The single line power wiring diagram was re-designed to include the electric unit heaters for the Pump Room and the Motor Room, and to re-size the circuits for the re- sized HVAC equipment. BAXTER WOODMAN Consulting Engineers CITY OF ELGIN,ILLINOIS OTTER CREEK PUMPING STATION,INFLUENT SEWER,FORCE MAIN AND BOWES ROAD INTERCEPTOR SEWER-UPSTREAM ENGINEERING SERVICES AGREEMENT BETWEEN THE CITY OF ELGIN,ILLINOIS AND BAXTER&WOODMAN,INC. AMENDMENT NO.I ESTIMATES OF TIME AND COST FOR ADDITIONAL FINAL DESIGN SERVICES ATTACHMENT C-1 DESCRIPTION ESTIMATED HOURS Project Project Structural Electrical Cadd Manager Engineer Engineer Engineer Technician Secretarial 4 580/& 0 S58/hr Cep SB2mc altar i)S72/hr 01.61Thr Total Cost I. REVISE SITE WORK FOR INCREASED FLOOD ELEVATION A. Reconduct Structural Bouyancy Calculations 2 0 8 0 0 0 5820 B. Redesign Access Road 4 8 0 0 0 0 5792 C. Design Compensatory Storage 4 8 0 0 0 0 $792 D. Design Detention Area&Control Structures 4 16 0 0 0 0 51,256 D. Design Special Culvert Structure 2 16 4 0 0 0 $1,420 E. Revise Drawing Gl-Grading Plan 2 B 0 8 8 0 51,908 F. Revise Drawing G2-Piping Plan 2 8 0 0 4 0 5916 G. Revise Drawing G4-Miscellaneous Details 2 8 4 0 4 0 51,244 H. Revise Drawing GS-Miscellaneous Details 2 1 4 Q 4 4 5L244 SUBTOTAL 24 80 20 8 20 0 110,392 2. REVISE ROOF DESIGN AND ARCHITECTURE A. Design Wood Truss Roof System 2 0 16 0 0 0 31,476 B. Re-design HVAC System 2 24 0 0 0 0 S1,556 C. Re-design Walls and Pilasters 2 0 16 0 0 0 51,476 D. Re-conduct Masonry Wall Lateral Stability Analysis 2 0 1 0 0 0 5820 E. Revise Drawing MI-Lower Plan 2 4 0 0 4 0 $684 F. Revise Drawing MI-Lower Plan 2 4 0 0 4 0 5684 G. Revise Drawing M2-Intermediate Plan 2 4 0 0 4 0 $684 H.Revise Drawing M3-Upper Plan 2 4 0 0 4 0 5684 I. Revise Drawing M4-Section 2 4 4 0 4 0 51,012 I. Revise Drawing MS-Sections 2 4 4 0 4 0 $1,012 K. Revise Drawing M6-Section 2 4 0 0 4 0 $684 L. Revise Drawing M7-Sections 2 4 0 0 4 0 $684 M. Revise Drawing M8-Schematics 2 4 0 0 4 0 5684 N. Revise Drawing M9-Roof Plan 2 4 0 0 4 0 $684 O. Revise Drawing M12-Miscellaneous Details 2 4 0 0 2 0 $540 P. Revise Drawing M13-Exterior Elevations 2 4 0 0 8 0 5972 Q. Revise Drawing Sl-Lower Plan-Structural Details 2 0 4 0 4 0 $780 R Revise Drawing S2-Intermediate Plan-Structural Details 2 0 4 0 4 0 5780 S. Revise Drawing S3-Intermediate Plan-Structural Details 2 0 4 0 4 0 $780 T. Revise Drawing S4-Upper Plan-Structural Details 2 0 4 0 4 0 $780 U. Revise Drawing S5-Sections-Structural Details 2 0 4 0 4 0 $780 V. Revise Drawing S9-Structural Details 2 0 4 0 4 0 $780 W. Revise Drawing El-Lower Plan-Electrical Details 2 0 0 4 4 0 5804 X. Revise Drawing E2-Intermediate Plan-Electrical Details 2 0 0 4 4 0 $804 Y. Revise Drawing E3-Upper Plan-Electrical Details 2 0 0 4 4 0 5804 1 Revise Drawing E4-Motor Control Center 2 0 0 4 4 0 $804 AA. Revise Project Manual II 1Q 1 4 Q 24 53.5¢$ SUBTOTAL S8 88 80 20 90 24 S26,100 B A X T E R FrAggiL14 1 WOODMAN Consulting Engineers OF Etc, City of Elgin Agenda Item No. nor August 6, 1998 TO: Mayor and Members of the City Council FROM: Joyce A. Parker, City Manager SUBJECT: Otter Creek Lift Station Amendment No. 1 to the Agreement with Baxter & Woodman PURPOSE The purpose of this memorandum is to provide the Mayor and members of the City Council with information to consider Amendment No. 1 to an agreement with Baxter & Woodman for the design of the Otter Creek Lift Station in the amount of $36, 492 . BACKGROUND In September of 1995 the City Council authorized an agreement in the amount of $207, 000 with Baxter & Woodman (B&W) to prepare plans and specifications and provide bidding assis- tance for the subject project . Subsequent to the completion of the pumping station design in March of 1996, the Flood Insurance Rate Map (FIRM) was revised in June of 1996 . The revised FIRM increased the 100-year flood elevation along the west and south edges of the pumping station site by 2 . 5 feet . This increase in the flood elevation necessitated a redesign of the site grading plan and also required that the pumping station be relocated farther east on the site so that the facility would be outside the floodplain. The pump station site is located on property that belonged to the Kane County Forest Preserve District . An agreement was reached in the fall of 1997 between the City and the Kane County Forest Preserve District for the transfer of the property to the City. A special condition of this agreement required that the building have a residential appearance . This necessitated a redesign of the buildings roof from a flat concrete design to a wood truss design resulting in extensive mechanical, architectural, structural and electrical design changes. A copy of Amendment No. 1 is attached as Exhibit A. , . Otter Creek Lift Station/Amendment No. 1 July 24, 1998 Page 2 row COMMUNITY GROUPS/INTERESTED PERSONS CONTACTED None . 29/2 _,FINANCIAL IMPACT The amount of Amendment No. 1 will total $36, 492 . This will bring the total amount of the agreement with Baxter & Woodman to $243 , 492 . Monies for the Otter Creek Lift Station project are located in the sewer portion of the 1996 Bond Fund ($2 . 95 million) . Sufficient funds are available in account number 396-4200-795 . 92-32, project number 339505, to pay for this Amendment No. 1 . ajI LEGAL IMPACT None . ALTERNATIVES None . RECOMMENDATION It is recommended that City Council approve Amendment No. 1 to the agreement with Baxter & Woodman in the amount of $36, 492 and authorize staff to execute the necessary documents . Respectfully submi ed, 42 , a/EL- J#ce P . Parker City Manager SP/do Attachments