Addendum No 1 7-29-2026-Parker Terrace - Final.pdf.crdownload

ADDENDUM No. 1 July 29, 2026

THE TOWN OF GLASTONBURY

PARKER TERRACE WASTWATER PUMPING STATION UPGRADES

ADDENDUM NO. 1

July 29, 2026

The attention of bidders submitting proposals for the above-referenced project is called to the following Addendum to the specifications. The items set forth herein, whether of omission, addition, substitution or other change, are all to be included in and form a part of the proposed Contract Documents for the work. Bidders shall acknowledge this Addendum in the Bid Proposal by initialing and dating Addendum number on the Form of General Bid.

GENERAL:

Bidder note that the Bid due date has been revised to 11:00 am on August 11, 2026

Questions are due by COB July 30, 2026. Questions will not be answered if received after said date and time.

SPECIFICATIONS

Form of General Bid: Delete Section 00410 and Replace with revised Section 00410

DRAWINGS

None

QUESTIONS AND ANSWERS

1. I was looking over the provided specs on this pump station upgrade project in Glastonbury.

Looks like the pumps specified are the Sulzer (or Flygt) with the key feature being they have an integral closed loop cooling system that circulates the glycol mixture internally. This is opposed to non-clog pumps that may have a cooling jacket that circulates the pumped media to provide the dry run cooling capabilities, or the standard submersible oil-filled versions, which rely on submersion for their cooling.

With these pumps being in a wet well, normally submerged, I would like to propose an as equal Homa pump, details attached. This Homa pump utilizes a cooling jacket that circulates the pumped media, which allows for continuous operation in a non-submerged environment. This is the closest match to the requested pump construction details that I can offer. Please let me know if this as equal will be considered, keeping in mind the difference in requested cooling method. I appreciate the consideration.

Answer: Only Sulzner and Flygt pumps will be acceptable.

2. We are reaching out for a clarification on the specifications for the Parker Terrace Pump Station upgrades bid. On line 22 of the instructions to bidders, it lists that all bidders shall self-perform a minimum of 50% of the contract value. Based on our understanding of the project, we do not believe the varying scopes of work would even set a contractor up to be able to self-perform 50% of this work, is this still in place for this bid?

Answer: No, Delete Section 00200 Article 22 in its entirety.

3. On the bid table, item 4, allowance for uniformed officers/traffic control is written out as ten thousand but numerically written $5,000. Which amount is correct?

Answer: Allowance For Uniform Officers/Traffic Control shall be $10,000.00

4. On the bid submission requirements, it lists to include the certificate of compliance with CGS 31- 57B as per section 22 of the information for bidders, but there is no certificate in the spec book, nor does section 22 discuss this.

Answer: Completion of a Certificate of compliance per CGS Section 31-57B is REQUIRED as part of this bid response. This form can be found attached to this Addendum #1.

5. Bi-pass pumping: what amps are available for bypass pumping? Can we utilize electric pumps for primary and diesel pumps for secondary? – need 70am 480v from the service of the new building.

Answer: The existing building is served by a single electrical service rated 400A at 277/480V. Yes, electric pumps for primary and diesel pumps for secondary is acceptable.

Submit PE stamped plan per specifications for review and approval. Proposed electrical service is 400-amp 480v 3 phase.

6. Are the existing force main valves just outside of the pump station workable?

Answer: Assumed in operatable, only Town personnel shall operate all valves.

7. How long are the existing 12” and 16” force mains from the building to next upstream SMH or sewer treatment plant? We need to clarify how much sewerage is in those pipes.

Answer: Length of force main from pumping station to discharge manhole is approximately 2,000 lf.

8. Confirming the existing wet-well adjacent to the existing building will not need to be removed?

Answer: Correct, wet well adjacent to the existing building to remain.

9. Please confirm which specific wet wells, valve vaults, and below grade structures are to remain and which are to be demolished, abandoned, and/or filled. Please specify what we are filling them with.

Answer: Refer to the contract drawings and technical specifications. For example, Sheet M202 shows items to be demolished. Both existing wet wells to remain in service. Existing dry well/pumping chamber shall have all equipment removed and filled with sand per the Contract drawings and specifications.

10. It looks as if the existing pump chambers will be filled, with a slab poured on top. What are we filling them with?

Answer: Sand (See Sheet M202)

11. Are building permit fees waived?

Answer: Yes, see section 00890 Permits

12. Are education permit fees waived?

Answer: Refer to section 00890

13. Will the town accept the grit/sludge from the bottom of the existing wet well at one of their locations in town or will we need to dispose of that?

Answer: No, Contractor to dispose of materials

14. Are the old fillets that will need to be removed in the existing wet well? The drawing is unclear.

Answer: Yes, see Section A on sheet M202. Existing fillets shall be modified to meet pump manufacturer’s recommended clearances and extend 1V:1H to perimeter walls. Assume demolition of existing and re pouring of fillets is required.

15. Where exactly are the existing pumps located?

Answer: See section A on sheet M202. Existing pumps are located on bottom floor of the Drywell/pumping chamber, pump motors are located on level above the pumps.

16. Are existing condition drawings available?

Answer: See sheets M201 and M202. Record drawings will be provided to the selected contractor.

17. Can a line item for unsuitable soil be added?

Answer: No.

18. Can a line item for rock excavation be added?

Answer: No. See Geotechnical Report added to this Addendum.

19. Is a Geotech report available?

a. What is the anticipated groundwater elevation

Answer: See Geotechnical Report added to this Addendum.

20. Is temp fencing expected for the duration of the project?

Answer: Yes

21. Please identify any owner-furnished equipment and define storage, unloading, inspection, and warranty responsibilities.

Answer: There is No Owner Furnished equipment

22. Please identify if any training will be required for the owner.

Answer: Required training shall be as required per contract specifications. As a minimum the following Manufacturer training shall be provided:

Pumps Generator and ATS Pump Motor VFDs Control Panel

23. Can the grass field next door to the pump station be utilized for a laydown area?

Answer: The Town will work with selected Contractor for laydown area on town property.

24. Can the road be shut down for crane operations?

Answer: Yes, coordination with Town and Police Department will be required.

25. Can the contractor utilize potable water from the existing facility during construction at no cost?

Answer: Yes, Contractor shall ensure that water usage is metered.

26. Can the contractor utilize the existing restroom facilities during the first phase of construction?

Answer: No. Contractor shall provide temporary facilities.

27. Are there existing survey control points available for use?

Answer: Benchmarks with vertical information are shown on sheet C100.

24. Will the Engineer be providing horizontal and vertical control and working points for field layout?

Answer: Control points and or AutoCAD file will be provided to the awarded contractor.

Contractor responsible for field layout.

25. Will there be a formal Pre-Bid site visit?

Answer: No formal Prebid site visit. Contractor may request site visit. Coordinate schedule with Jeff Lemay.

26. Section 00410 (Bid Form) Please provide Certificate of Compliance with CGS 31-57B, that is to be provided with our proposal.

Answer: See response to question 4 above.

27. Section 024116 1.03 D, refers to an existing adjacent sidewalk, fire hydrant and fence to be documented / protected. Confirm these items are applicable to the project.

Answer: Delete Paragraph 02 41 16 1.03.D.

28. Section 310000 1.05 refers to Appendix A for subsurface conditions. Please provide.

Answer: See Geotechnical Report added to this Addendum.

29. Cummins the specified generator manufacturer said that they do not manufacture a naturel gas 180 HP generator as shown on drawing E101. They do make a 175 HP or a 200 Hp generator.

Which generator should be used for this bid?

Answer: Provide a 200 KW Generator

30. What is the driveway pavement requirements for the project? Specification section 32 12 00 -1 subsection 1.02 D states: HMA S1.0 3” thick base and HMA S0.5 3 2” thick top coat. But drawing C904 indicates 2” or 3” thick HMA S0.375 pavement for driveway and 3.5” for street.

Answer: Refer to Section 32 12 00 1.02: Type 3: Heavy Duty Permanent Pavement with 12-inch process aggregate subbase installed in 2 lifts.

31. Is there a form for CGS 31-57B Certificate of Compliance? Or are we to create one with the information provided in the Information for bidders? Lists on the bid form as per Section 22 of the Information for bidders, which is incorrect. Should be #21?

“Provided certification for Compliance with Town Ordinance Prohibiting Natural Gas Waste & Oil Waste from Natural Gas Extraction Activities or Oil Extraction Activities as per Section 23 of the Information for Bidders” – is this the same requirement as the above question? Please note the numbering is incorrect on the bid form #23 lists Engineer.

Answer: See revised Bid Form.

32. Generator: a 180KW is not available. A 175KW is available, but we need approval. Otherwise, we will have to step up to a 200 KW. Please clarify what is required/acceptable.

Answer: Provide a 200 KW Generator

33. Is the self-performance requirement of 50% applicable for this pump station? How will the engineer be verifying this.

Answer: No, Delete Section 00200 Article 22 in its entirety.

ATTACHMENTS

A. Revised Bid Form - Section 00410 B. Certificate of Compliance with Connecticut General Statute Section 31-57b C. Geotechnical Report D. Record Drawings: “Wells Street Sewer Replacement, February 2024” 7 drawings

NOTE: This Addendum consists of 25 pages including above text.

TOWN OF GLASTONBURY

WESTON & SAMPSON ENGINEERS, INC.

END OF ADDENDUM NO. 1

00410- 1

SECTION 00410

FORM OF GENERAL BID

TOWN OF GLASTONBURY

BID / PROPOSAL GL-2027-09

STATE PROJECT NO.

DATE ADVERTISED 7/8/2026 DATE / TIME DUE 8/11/2026 at

11:00 A.M.

NAME OF PROJECT Parker Terrace Wastewater Pumping Station Upgrades

It is the responsibility of the Bidder to clearly mark the outside of the bid envelope with the Bid Number, Date and Time of Bid Opening, and it also THE RESPONSIBILITY OF THE BIDDER

TO CHECK THE TOWN’S WEBSITE BEFORE SUBMITTING BID FOR ADDENDA

POSTED PRIOR TO BID OPENING.

The Bidder acknowledges receipt of the following Addenda:

Addendum #1 ________________ (Initial & Date) Addendum #2 ________________ (Initial & Date) Addendum #3 ________________ (Initial & Date)

OTHER ITEMS REQUIRED WITH SUBMISSION OF BID PROPOSAL:

The following bid checklist describes items required for inclusion with the above-referenced bid proposal package. It is provided for the convenience of the Bidders and, therefore, should not be assumed to be a complete list.

_____ 1. Included a copy of the Bid Bond as per Section 10 of the Information for Bidders. Original Bond to be mailed as specified herein.

_____ 2. Included Disclosure of Past and Pending Mediation, Arbitration, and Litigation cases against the Bidder or its Principals as per Section 17 of the Information for Bidders.

_____ 3. Included Qualifications Statement as per Section 20 of the Information for Bidders.

_____ 4. Included Certificate of Compliance with CGS 31-57B, attached.

_____ 5. Contractor shall comply with Town Ordinance Prohibiting Natural Gas Waste & Oil Waste From Natural Gas Extraction Activities or Oil Extraction Activities as per Section 21 of the Information for Bidders

_____ 6. Checked Town web site for Addenda and acknowledged Addenda on page BP-1.

_____ 7. Acknowledged Code of Ethics on page 00410-4.

_____ 8. Prepared ONE consolidated pdf file for on-line bid submission.

BIDDER NAME:

00410- 2

Item No.

Brief Description, Unit or Lump Sum Price

(In Both Words and Figures)

Parker Terrace Wastewater Pumping Station Upgrades

Est.

Quantity(1) Unit Total in Figures

Parker Terrace Pumping Station-Complete

1 LS

Unit Price, Dollars and Cents (words)

Unit Price in Figures

By-Pass Pumping - Complete

1 LS

Unit Price, Dollars and Cents (words)

Unit Price in Figures

Allowance for Abatement of Contaminated Materials

Twenty Thousand 1 Allow.

Unit Price, Dollars and Cents (words)

$20,000.00

Unit Price in Figures

Allowance for Uniformed Officers / Traffic Control

Ten Thousand 1 Allow.

Unit Price, Dollars and Cents (words)

$10,000.00

Unit Price in Figures

Allowance for Utility Company Work

Thirty Thousand 1 Allow.

Unit Price, Dollars and Cents (words)

$30,000.00

Unit Price in Figures

00410- 3

Item No.

Brief Description, Unit or Lump Sum Price

(In Both Words and Figures)

Parker Terrace Wastewater Pumping Station Upgrades

Est.

Quantity(1) Unit Total in Figures

Mobilization, Bonds and Insurance (not more than 5% of the total of Items 1 through 5), Lump Sum

1 LS

Unit Price, Dollars and Cents (words)

Unit Price in Figures

Total Bid in Figures

Contract price for the Project Bid (Items 1 through 6) is:

Total Bid, Dollars and Cents (words)

TOTAL BID AMOUNT: $

(Numeric)

WRITTEN TOTAL BID AMOUNT:

00410-4

CODE OF ETHICS:

I/We have reviewed a copy of the Town of Glastonbury’s Code of Ethics and agree to submit a Consultant Acknowledgement Form if I/We are selected. Yes No *

*Bidder is advised that effective August 1, 2003, the Town of Glastonbury cannot consider any bid or proposal where the Bidder has not agreed to the above statement.

NON-COLLUSION AFFIDAVIT:

By submission of this bid, the Bidder certifies, and in the case of a joint bid each party thereto certifies as to their own organization that this bid has been arrived at independently without consultation, communication, or agreement as to any matter relating to this bid with any other Bidder or with any competitor.

Respectfully submitted:

Type or Print Name of Individual Doing Business as (Trade Name)

Signature of Individual Street Address

Title City, State, Zip Code

Date Telephone Number/Fax Number

E-Mail Address SS# or TIN#

(Seal – If bid is by a Corporation)

Attest

WELTI GEOTECHNICAL, P.C.

227 Williams Street P.O. Box 397 Glastonbury, CT 06033-0397

(860) 633-4623 / FAX (860) 657-2514

March 14, 2025

Mr. Robert G. Tedeschi, P. E.

Senior Team Leader Weston & Sampson 712 Brook Street Rocky Hill, CT 06067

Re: Town of Glastonbury Sewage Treatment Plant, Parker Terrace. Glastonbury, CT Proposed Improvements, Including A New 25 feet x 30 feet Building to house piping, electrical equipment and generator

Dear Bob:

1.0 Regarding the soil profile in the area of proposed construction, the existing data from 1983 and the 1965 borings provide an adequate soils cross section for evaluating foundation requirements.

The boring and sampling was conducted by Clarence Welti Associates solely to obtain indications of subsurface conditions as part of a geotechnical exploration program. No services were performed to evaluate subsurface environmental conditions.

2.0 The Subject Project, based on the scope of services cited in the agreement with the Town of Glastonbury will include two new precast concrete buildings to house mechanical and electrical equipment. The buildings would be founded on spread footings atop a prepared pad. Other work apart from the above would include demolition of an existing building over the pump chamber and the equipment within the chamber and filling with flowable fill. The abutting well would be filled with sand. A concrete slab for H-20 loading would be placed over the sand filled well.

3.0 The Soils Cross Section from the old borings included up to 14 feet of loose fill overlying the deep varved clay and silt stratum. It is assumed that much of the loose fill with traces of organics was removed during the construction of the existing wet well and pump chamber. The soils cross section beneath the proposed building is assumed to be a mix of compacted fill over localized uncompacted fill.

4.0 The Criteria for Foundation Type and Loading are as follows:

1. The maximum total settlement should not exceed 1" and the maximum differential settlement should not exceed 2 the maximum settlement over a length of 40 feet.

2. The Slab at Grade floor should not settle differentially more than ½" in excess of the structure subsidence.

The above criteria have been assumed by the writer in developing the recommendations included herein. More stringent criteria than the above may require supplemental geotechnical input.

5.0 Based on the possible irregularities in the soil profile, the building should be on a mat foundation. The preparation beneath mat would include initial proof rolling of the subgrade and placement of a minimum 24ʺ of controlled/structural fill conforming to the gradation in section

6.0 below. The proof rolling should include at least six passes of vibratory compactor with a dynamic force of at least 6 Tons. The controlled fill should be placed on a geotextile (Mirafi RS580i or equivalent).

5.1 The Allowable Bearing Pressure for footings on the controlled fill or on the natural soils with the above preparation can be 2,000 psf. The maximum toe pressure on the retaining wall footing should be limited to 3,000 psf. The allowable loading can be increased by 1/3 for seismic or wind loading.

5.2 The Frost Protection Depth is 3.5 feet below finish grades in areas, which are exposed to weather. Where foundations are placed at less than the required frost protection depth, the frost protection should be addressed in accordance with ASCE 32.

5.3 Summary of Foundation Design Parameters:

Parameter Value

Allowable Bearing Pressure for mat on the crushed stone atop the controlled fill 2,000 psf

Soil Unit Weight (Backfill) * 120 pcf

Subgrade modulus for mat design 150 pci

At-Rest Pressure Coefficient, KO 0.45

Active Pressure Coefficient, KA (level backfill) 0.28 Ultimate Sliding Coefficient, concrete on crushed stone over soil 0.60

Seismic Site Soil Profile Classification D Mapped MCE Spectral Response Acceleration for one second period, S1 0.055

Mapped MCE Spectral Response Acceleration for short period, SS 0.200

Frost Protection Depth 3.5 feet

* Backfill material conforming to section 6.0 below

6.0 Regarding Controlled Fill, Backfill for Retaining Walls and Excavations at Columns and Walls, plus Slab at Grade Underlayment (to 8" below the slab bottom) the materials should conform to the following or be 3/8" crushed stone:

Percent Passing Sieve Size

100 3.5"

50 – 100 3/4"

25 – 75 No.4

The fraction, passing the No.4 sieve should have less than 15%, passing the No. 200 sieve.

Based on the available borings, the natural soils will not conform to the above gradation.

All backfill and fill must be compacted to at least 95% of modified optimum density.

7.0 Regarding Earthwork, excavations will be in the existing fills or natural soil which will fall in OSHA Class C. This will require sloping excavations, which are un-shored and exceed 5 feet in height, to be cut back to slopes less than 34 from the horizontal (1.5H:1V).

8.0 This report has been prepared for specific application to the subject project in accordance with generally accepted soil and foundation engineering practices. No other warranty, express or implied, is made. In the event that any changes in the nature, design and location of structures are planned, the conclusions and recommendations contained in this report should not be considered valid unless the changes are reviewed and conclusions of this report modified or verified in writing.

The analyses and recommendations submitted in this report are based in part upon data obtained from referenced explorations. The extent of variations between explorations may not become evident until construction. If variations then appear evident, it will be necessary to re-evaluate the recommendations of this report.

Welti Geotechnical, P.C., should perform a general review of the final design and specifications in order that geotechnical design recommendations may be properly interpreted and implemented as they were intended.

If you have any questions, please call our office.

Very truly yours, Max Welti, P.E. Clarence Welti Ph.D., P. E.

President, Welti Geotechnical, P.C. Vice President

APPENDIX

BORING LOCATION PLAN

TEST BORING LOGS

TedeschiR Cloudy

TedeschiR Cloudy

TedeschiR Cloudy

TedeschiR Rectangle

4-117-123-D5-WE20 Welles St Sewer Replacement Plan 2004.pdf