Bismark Construction Company 100 Bridgeport Ave. | Milford, CT | 06460 Office: 203.876.8331

ADDENDUM NO. 3 PHASE 1

Date: 6 July 2026

Project: Trumbull Hillcrest Middle School

530 Daniels Farm Road Trumbull, Connecticut State Project No: 144-0108N

Architect: TSKP STUDIO

Construction Manager: Bismark Construction Company

Please be advised that Addendum No. 3 has been issued for this project. The Addendum includes the following attached documents:

RFI responses (RFIs #1-#66) Requested Supplemental CAD Files Supplemental Spec Sections Supplemental Plan Sheets

Hillcrest Middle School - Phase I Prebid RFI

RFI # Description Reference Trade (Dropdown List)

Initiated By (Dropdown List)

Date Initiated Date Required

Action By (Dropdown List)

Answered By (Dropdown List) Date Answered Approved By

(Dropdown List) RFI Status Directive / Resolution

RFI 1 Is a CAD file available for the site drawings? Sitework Tim Tarini 06/17/26 06/24/26 TSKP (A/E) TSKP (A/E) 06/22/26 TSKP (A/E) CLOSED Yes, Langan will package up the CAD files with a disclaimer message which is their release form, so I will send once received. See attached CAD Files in building connected link for Addendum 003.

RFI 2 Will town-owned property at the Indian Ledge area be available for the staging of earth and rock material and disposal of excess?

Sitework Tim Tarini 07/06/26 07/13/26 ARCADIS (Owner Rep)

BISMARK (CM) 06/29/26 BISMARK (CM) CLOSED There is no option to stage site materials at Indian Ledge Park

RFI 3 With the release of Addendum 1 and upcoming addenda to address RFI's we request a two-week bid extension to properly formulate an accurate bid.

Sitework Tim Tarini 06/22/26 06/29/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED The Bid Date will be extended 1 week. Bids will be due July 9, 2026, 2:00pm

RFI 4 Based on the Soil Management Plan provided it appears the vast majority of the soils on site are classified as “Clean Fill” and do not require any regulated off side disposal. If polluted or contaminated materials are encountered that require off site disposal how will this work be paid for?

Sitework Tim Tarini 06/24/26 07/01/26 TSKP (A/E) LANGAN (Site/Civil/Envir on.)

07/01/26 TSKP (A/E) CLOSED Langan completed a Phase II Environmental Site Assessment in August 2025 and we also prepared a Soil Management Plan dated April 2026. No releases were identified associated with any of the AOCs, with the exception of pesticides in limited areas related to historical agricultural use of the site. Under the new Connecticut Release Based Cleanup Regulations, pesticides are exempt from CTDEEP reporting and remediation requirements and reuse of these soils on the same parcel from which they were excavated is not restricted, regardless of the concentration of pesticides. We recommend that topsoil be reused to the extent practicable as any soil proposed to be exported will need to be classified at a minimum frequency of 1 sample per 500 cubic yards and according to the requirements of the receiving facility. Per the new state Release-Based Cleanup Regulations (RBCRs) effective 3/1/26, sampling always has a potential to trigger CTDEEP reporting and may require additional sampling if non-naturally occurring compounds are detected.

RFI 5 With regards to scope item 4.1 A, please provide a quantity of portable toilets and required temporary services to the CM Trailers.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED The sitework contractor shall include all temporary toilets for the duration of the project.

The sitework contractor shall include 12 toilets for a duration of 20 months cleaned twice weekly and 6 toilets for 10 months cleaned twice weekly. The Sitework Contactor shall include a separate line item in their schedule of values for this scope of work.

6 RFI 6 With regards to scope item 4.1 D, please provide a specification.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED This scope item is deleted from this bid package.

RFI 7 With regards to scope item 4.8 A, please provide the size of temporary electrical service and number of conduits.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED Temporary electric service shall be 400 amp in weathertight enclosure mounted on a temporary power backboard located adjacent to the new building. Include 1000 lf of trench excavation, bedding, 4" conduit, wire, and backfill.

RFI 8 With regards to scope item 4.8 M, please clarify the scope of work required.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED Disregard any work with this item. The gas service to the existing school will be shut off/terminated by the demolition contractor. See spec section 329100 Planting Soils attached.

9 RFI 9 With regards to scope item 4.13 E, there is no specification 329100.

Sitework Tim Tarini 06/24/26 07/01/26 TSKP (A/E) LANGAN (Site/Civil/Envir

06/30/26 TSKP (A/E) CLOSED Spec section 329100 was provided in the Phase 2 spec package. The section will be re-distributed. See attached specification.

RFI 10 With regards to scope item 9 A, please clarify scope of work required.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED Sitework contractor shall include 8 poles with 400 watt equivalent LED low cutoff light fixtures to illuminate access drives. Include 1,500 lf of trench excavation, bedding, conduits, wire and backfill. Power to come from existing light pole and/or existing temporary service. The exact locations of these fixtures will be determined by the Construction Manager. The Sitework Contactor shall include a separate line item in their schedule of values for this scope of work.

RFI 11 With regards to scope item 11 B, are the utility companies aware of project requirement in order for us to contact them and get fees? Also, is the town waiving the sewer connection fee?

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED The utility companies are aware of the project. The Town will not be waiving the sewer connection fee.

RFI 12 With regards to scope item 24 C, is the rock allowance to pay for any rock encountered or only design changes that create added rock removal?

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED This allowance shall be utilized to pay for any rock encountered.

RFI 13 Due to the scope of the work involved, the amount of subcontractors required, and material pricing required we are requesting that the bid date be extended of we will not have the time necessary to submit a bid.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/24/26 BISMARK (CM) CLOSED See response to RFI # 3

14 RFI 14 Please see the attached logistics plan with questions and notes.

Sitework Tim Tarini 06/24/26 07/01/26 BISMARK (CM) BISMARK (CM) 06/29/26 BISMARK (CM) CLOSED See Attached Site Logistics Plan.

RFI 15 There are allowances mentioned in the scope narrative (e.g., police hours, flagger hours, crew for 10 Saturdays) that are not stated on the allowance schedule. How should these be handled for bidding purposes?

Sitework Tim Tarini 06/25/26 07/02/26 BISMARK (CM) BISMARK (CM) 06/26/26 BISMARK (CM) CLOSED Allowances to be carried in the base bid of the overall project that are mentioned in the scope narrative.

RFI 16 Can you please clarify the extent and depth of over-excavation and refill the sitework contractor is to include in the new building footprint in the base bid?

Both the excavation spec and Geotech report refer to a removal and replacement program.

Sitework Tim Tarini 06/25/26 07/02/26 TSKP (A/E) LANGAN (Site/Civil/Envir on.)

07/01/26 TSKP (A/E) CLOSED Fill was encountered throughout the site beneath the proposed bottom of footing elevations. The elevation of the fill is documented in the geotechnical report. The fill should be removed and replace with structural fill within the foundation zone of influence. If the fill material meets the specification for structural fill, it can be re-used in compacted lifts. See geotechnical report for additional information.

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Reference Trade (Dropdown List)

Initiated By (Dropdown List)

Date Initiated Date Required

Action By (Dropdown List)

Answered By (Dropdown List) Date Answered Approved By

(Dropdown List) RFI Status Directive / Resolution

RFI 17 Given that the foundation work is scheduled to be performed through the Winter of 2026-2027, can you please clarify the responsibilities for winter conditions and frost protection?

Sitework Tim Tarini 06/25/26 07/02/26 BISMARK (CM) BISMARK (CM) 06/26/26 BISMARK (CM) CLOSED Concrete Bid Package will be responsible for their own winter conditions regarding frost protection.

RFI 18 At what elevation(s) will the demo contractor leave the existing building footprint at? Is the plan of the existing building foundation available to utilize to estimate the fill requirements?

Sitework Tim Tarini 06/25/26 07/02/26 TSKP (A/E) LANGAN (Site/Civil/Envir on.)

07/06/26 TSKP (A/E) CLOSED The demo contractor shall be responsible for determining the extent of building and foundation removal. The temporarily restoring grades as necessary to achieve the final grades as shown in the contract documents by the sitework contractor.

RFI 19 Bid package 1.32A, Section 25(h) Alternates, ADD/Alternate #8: Precast seating at the courtyard off the library. We are unable to determine the location of the courtyard referenced. Please provide manufacturer’s information, quantity, and location for the precast seating referenced.

Sitework Tim Tarini 06/26/26 07/03/26 BISMARK (CM) BISMARK (CM) 06/26/26 BISMARK (CM) CLOSED CS 102 . Then Detail drawing CS503 Detail 5.

RFI 20 Drawing CS101 shows a Digital Site Sign and refers to the Architectural Plan for additional information. We are not in receipt of the architectural plans. Please provide the architectural plans and specifications for the Digital Site Sign. Will this digital site sign be included in Bid Package 1.32A Site Work?

Sitework Tim Tarini 06/26/26 07/03/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED 24 E in Allowance Section the Site work Bid package section

RFI 21 Bid package 1.32A, Section 4.12(l) Site Furnishings and Improvements note to furnish and install trash en closure. We do not see that a trash enclosure is shown on the civil plans. Additionally, there is no detail for the trash enclosure. Please advise.

Sitework Tim Tarini 06/26/26 07/03/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Please delete 4.12 i, trash enclosure is not in scope.

RFI 22 Bid package 1.32A, Section 4.12(k) Site Furnishings and Improvements note to furnish and install trash exterior trash receptacles. The trash receptables are not shown on the civil plans or details. Please provide the manufacturer name, model number, quantity and locations for the trash receptacles.

Sitework Tim Tarini 06/26/26 07/03/26 TSKP (A/E) LANGAN (Site/Civil/Envir on.)

07/06/26 TSKP (A/E) CLOSED The site shall have 5 combination trash and recycling receptacles or 10 individual units.

Acceptable receptables include the Landscapeforms Generation 50 litter receptable with side opening or Landscapeforms Select Recycling System with 2 units. Contractor to submit product data and physical samples to project landscape architect prior to installation to determine final color and materials. See attached document with proposed locations. See attached drawing sheet CS100 marked up to show locations of trash receptacles.

RFI 23 Bid Package 1.32A states to furnish and install stone walls at the Harvest Hill entrance as shown on the plans. We have been unable to locate these walls or any associated details within the bid documents.

Please provide the applicable drawings or clarify this scope.

Sitework Tim Tarini 06/29/26 07/06/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Site Contractor to re-build the ends of the existing walls in order to accommodate the wider opening. Match construction of existing wall.

24 RFI 24 Please provide any available as-built drawings or existing slab elevations for the existing building.

Sitework Tim Tarini 06/29/26 07/06/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Please refer to drawing VB 101 for slab and sill elevations.

RFI 25 Sheet S1.01C references Sheet S2.11; however, Sheet S2.11 was not included in the bid documents.

Additionally, the P5 plumbing sheets appear to be missing. Please provide the missing drawings

Sitework Tim Tarini 06/29/26 07/06/26 TSKP (A/E) TSKP (A/E) CLOSED See attached drawing sheet S2.11 & PCR Plumbing Sheets.

RFI 26 Scope Item: 6.4D Please confirm over excavation and replacement with structural fill is required below building foundations located in the "DEEP" fill areas

Sitework Tim Tarini 06/29/26 07/06/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Correct. Over excavation of unsuitable material is required regardless of the depth of structural fill being placed on top of it.

RFI 27 Scope Item: 4.8F,H,N Please provide location of footing drains, foundation drainage system and information on radon system

Sitework Tim Tarini 06/29/26 07/06/26 TSKP (A/E) CLOSED Footing Drain drawings please S3.0

28 RFI 28 Scope Item: 4.12I Please provide information on trash enclosure

Sitework Tim Tarini 06/29/26 07/06/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Please refer to RFI 21 answer

29 RFI 29 Scope Item: 19 Please provide information on building insulation

Sitework Tim Tarini 06/29/26 07/06/26 TSKP (A/E) TSKP (A/E) TSKP (A/E) CLOSED see attached spec section 072100.

30 RFI 30 Scope Item: 16 Please provide information for foundation waterproofing/drainage board

Sitework Tim Tarini 06/29/26 07/06/26 TSKP (A/E) TSKP (A/E) TSKP (A/E) CLOSED see attached spec section 033000 & spec section 071416.

31 RFI 31 With regards to scope item 4.1 J, What size area will need to be protected for each heat area storage area?

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Please make each area 12'x16'

RFI 32 With regards to scope item 4.2 F, Please verify that the demolition contractor will be removing all foundations within the building area and verify what grade they will be leaving the existing building area at.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Demolition Contractor to remove all building foundations. Assume a frost wall and footing with an average depth of 4' below slab/sill elevations. These excavations will be sloped back in accordance with OSHA Standards for safety. At the pool area assume an area of 47 ft x77 ft . The pool is 3'-6" deep on the East Side and gradually slopes to the West and is 10' deep. The pool holds roughly 186,000 gallons of water. The pool will need to filled by the sitework contractor.

RFI 33 With regards to scope item 4.3 G, Please clarify the intent of this scope item. This location will be used once for temp water run off.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED The permanent detention basin will be utilized as a temporary detentions basing. The Site Contractor will be required to remove all sediment and construct to final size/elevation per the contract documents.

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Trade (Dropdown List)

Initiated By (Dropdown List)

Date Initiated Date Required

Action By (Dropdown List)

Answered By (Dropdown List) Date Answered Approved By

(Dropdown List) RFI Status Directive / Resolution

RFI 34 With regards to scope item 4.6 G, Please clarify if the base contract is to include the removal and replacement of unsuitable soils or just removal as there is an allowance (24.A) for additional structural fill.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Base contract includes removal of unsuitable soils and replacement per the geotechnical report. The allowance will be utilized should additional unsuitable soils be encountered beyond what is indicated in the geotechnical report

RFI 35 With regards to scope item 4.9 C, Please clarify as this scope item refers to pipes being deeper than the 4’ minimum “due to the elevations of the initial prepared surfaces for the field installation relative to the proposed grades” but then grading plans do not show any proposed grading in the Geothermal Well area.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Field to be replaced as is with minimal adjustments to final grade from existing grade.

Site Contractor shall install geothermal piping/wells 4' below the existing grade.

RFI 36 With regard to scope item 7 B, Please clarify if the installation of a wheel was system is requiring the installation of a temporary in the ground wheel was system, such as the Stanton STB 30, or would a portable pressure washer operated by the required full time laborer suffice.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED A full time laborer with a pressure washer will be sufficient. Site Contractor shall maintain all erosion control to prevent run-off and remove sediment as required.

RFI 37 With regards to scope item 7 E, Please clarify what drawing is being referred to as DWG 101, the location of the 15” RCP, and if the new lower level spillway is the detention pond on the south side of sheet CE102

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Reference drawing CS101. 15" RCP at Northeast of existing building ties into existing spillway at southwest of existing school with invert of 374.09

RFI 38 With regards to scope item 9 N, Please clarify if the

400 LF of 10’ wide staging referred to is to be temporary scaffold staging with overhead protection.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Correct

RFI 39 With regards to scope item 14 A, this item references clay and stone dust materials at the JV Baseball Field but we cannot find these details on the drawings.

Please advise.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Field to be replaced in kind.

RFI 40 With regards to scope item 16, this item lists waterproofing as part of the site package. However no specification has been provided and none of the drawings show the waterproofing. The Structural Drawings (detail 10 on S3.00) provided in Addendum 1 refer to waterproofing on the Architectural Drawings.

Please advise.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) TSKP (A/E) TSKP (A/E) CLOSED see response to RFI 30

41 RFI 41 With regards to Alternate # 7, Please clarify the extent of the work to be included.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) TSKP (A/E) CLOSED see attached plan sheet CS102, CS503, CS505.

42 RFI 42 With regards to Alternate # 8, Please clarify the location, quantity, and detail for the precast seating.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) TSKP (A/E) CLOSED see plan sheet CS102 & CS503.

RFI 43 It is unclear as to whom furnishes and installs the conduit for electrical and site lighting. Please advise as to who’s scope this may be. Only coduit in you Package is the si

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED The Electrical Contractor is responsible for the conduits for electrical and site electric.

RFI 44 In discussion with our Electrician with regards to the Temporary Electrical and Site Lighting, this will require 4 or more conduits along with heavy gauge wire and possibly a transformer due to the length of the run. In addition the location of the tie in on Daniels Farm Rd.

does not seem feasible as there will need to be poles added, as well as it appears the power requirements will not be able to be met as the existing wires do not seem to be able to support 400 Amp Service. It does appear that this would be feasible from Strobel Rd.

Please advise.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) CLOSED Tempoary Electrical power will be removed from the SIte bid package. The site bid package is responsible for the trenching of the temp power from dainels farm rd.

RFI 45 With regards to the permanent power, it appears the electrical is shown tying into the communications cabinet. Please advise if this is correct.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) BISMARK (CM) CLOSED Carry Linear footage for UG electrical to assumed new pole location at edge of Daniels Farm Road. Final location to be determined at a later date by UI.

RFI 46 There is no detail for the communication conduits or duct banks. Please advise as to if these are concrete encased as well.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) BISMARK (CM) CLOSED For the conduits and duct bank for the transformer and the power connections see attached Sheet E6.03 showing typical ductbank details. Communications conduits not required to be concrete encased.

RFI 47 The details for the light pole bases on the civil plans and electrical plans differ. Please advise as to which is correct. Also, the detail on the electrical plan shows Galvanized sweeps. Please advise as to if this correct as well.

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) CMTA (MEP) 07/06/26 TSKP (A/E) CLOSED Please refer to civil plans for light pole base details. Galvanized sweeps are correct per United Illuminating (UI) guidelines.

RFI 48 Does the site contractor own the supply and installation of all temporary electrical conduit and wiring related to the temporary electrical work or only the work called out in RFI 10?

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED The Site Contractor shall include all conduit and wiring for all temp electric.

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Trade (Dropdown List)

Initiated By (Dropdown List)

Date Initiated Date Required

Action By (Dropdown List)

Answered By (Dropdown List) Date Answered Approved By

(Dropdown List) RFI Status Directive / Resolution

49 RFI 49 What is the pad size for the temporary heat fuel storage locations?

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Pad size shall be12'x16' at each location. Bismark reserves the right to adjust pad size if locations are added or reduced.

RFI 50 How is the rock removal allowance being calculated?

Will it be based on the unit price #3 "Trench Rock Removal"?

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Rock removal allowance will be based on the trench rock unit price as measured in the field. Quantities to be mutually agreed to by Construction Manager and Site Contractor.

If rock is mass and not trench we reserve the right to adjust the unit pricing.

51 RFI 51 Can the bid date be extended by an additional week? Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Bid date will not be extended.

RFI 52 No MEP drawings are provided on BuildingConnected for us to price the interior E&B for underslab plumbing/electrical. Will these be provided in the next addendum or will you provide a quantity to be assumed?

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED MEP and Structural drawings are included in addendum # 1.

RFI 53 No architectural drawings are provided on Buildingconnected for us to price the vertical rigid insulation, waterproofing, etc. Will these be provided in the next addendum or will you provide a quantity to be assumed?

Sitework Tim Tarini 06/30/26 07/07/26 TSKP (A/E) TSKP (A/E) 07/06/26 TSKP (A/E) CLOSED see responses to RFI 29,30

RFI 54 Please clarify that all utility disconnects, capping and protection of existing school utilities within zones 7 - 12 are by phase 2 subcontractor.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED There is only one site contractor onsite the phase1/phase 2 is for bidding phases only.

Please 4.2 F.

RFI 55 Please clarify that all erosion control, site prep, sitework improvements, drainage and utilities within zones 7 - 12 are by phase 2 subcontractor.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED All erosion control is by the Site Contractor.

RFI 56 Please provide break line for all new utilities and drainage for what is by phase 1 subcontractor and by phase 2 subcontractor.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED All utilities are owned by the site contractor. Site contractor owns all sitework except for site concrete, fencing, and landscaping.

57 RFI 57 Please elaborate on what is to be accounted for within the 10' wide sidewalk staging scope item.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED As per the Bid Package: Temporary asphalt walk, staging/scaffold with overhead protection.

58 RFI 58 Please confirm alternate B#2 for Additional Athletic Field is just base prep only

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Alternate B2 additional athletic field includes grading, base materials, utilities, and spreading of topsoil.

59 RFI 59 Please confirm alternate C#3 for Pickleball Court is just base prep only

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Alternate C3 is for base prep only. Concrete, embeds, posts, nets, court surfacing is by the Site Concrete contractor. Fencing is by the Site Permanent Fence contractor.

RFI 60 Portion of Zone 6 bus loop is within the footprint of existing school, please advise if phase 1 subcontractor will need to re-mob following demolition of school to complete or will this portion be handled by phase 2 subcontractor.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED All of this work is by the Site Contractor. Site contractor owns all sitework except for site concrete, fencing, and landscaping.

RFI 61 Geothermal "10 Additional well and 1 additional supply/return circuit" is written as both an allowance and an alternate. Please advise which to carry as.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED This item should be treated as an alternate.

RFI 62 Scope Section 2 5.F - Phase 1 subcontractor is not on site during the set-up of the demolition for the existing school, should this item be moved to phase 2 subcontractor scope of work for establishment of demo and abatement contractor temporary access road?

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED This item is by the Site Contractor. Site contractor owns all sitework except for site concrete, fencing, and landscaping.

RFI 63 Scope item 4.12 D states all fields are by 2.32C landscape package. Scope item 14 A states all New Athletic Field Improvements as shown, including the JV baseball field including the clay infield materials and stone dust in dugouts is part of this contract. Alternate B is also an add alternate for the field. Alternate C is also an add alternate for the Pickleball Courts. Please clarify what the scope of the field work is for this package.

Sitework Tim Tarini 06/30/26 07/07/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED See responses to RFI # 39, 58, & 59.

RFI 64 There are multiple items in both the general scope (item #8 and #9) specific scope item (#4.8 A and #9) that seem to overlap. Please confirm the only electrical scope to be included is what what clarified in Addendum No.1 RFI#7 and #9.

Sitework Tim Tarini 07/01/26 07/08/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Please see answer to RFI # 44.

65 RFI 65 Scope Item: 4.9 H and P. Is this work to be included? Sitework Tim Tarini 07/01/26 07/08/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Yes this work is to be included.

66 RFI 66 Scope Item: 14 A. Please provide additional information

Sitework Tim Tarini 07/01/26 07/08/26 BISMARK (CM) BISMARK (CM) BISMARK (CM) CLOSED Please refer to RFI # 39.

67 RFI 67

68 RFI 68

69 RFI 69

70 RFI 70

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TRUMBULL HILLCREST MIDDLE SCHOOL

CAST-IN-PLACE CONCRETE

State Project No. 144-0108 N

033000 - 1

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 CT HPB documentation:

A. For all installed products and materials of the Section, submit the following information:

1. Cost breakdowns for the materials included in the Contractor or subcontractor's work. Cost breakdowns shall include total installed cost and material-only cost.

2. The percentages (by weight) of post-consumer and/or pre-consumer recycled content in the supplied product(s).

3. Indication of location (city, state) of the manufacturing location of the supplied product(s) and the distance from the project site.

4. Indication of location (city, state) of the extraction, harvest or recovery location of the raw materials used to manufacture the supplied product(s) and the distance from the project site.

B. For all field-applied adhesives, sealants, paints and coatings relating to work of this Sec-tion, indicate the Volatile Organic Compound (VOC) content in grams/liter and whether the product meets the requirements of the California Department of Health Services

(CDHS) Standard Practice for the Testing of Volatile Organic Emissions from Various

Sources Using Small Scale Environmental Chambers, including 2004 Addenda.

C. Provided cut sheets with the Contractor's or subcontractor's stamp, confirming that the submitted products are the products installed in the Project.

1.3 SUMMARY

A. Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes, for the following:

1. Footings.

2. Foundation walls.

3. Slabs-on-grade.

4. Suspended slabs.

5. Concrete toppings.

B. Related Sections:

1. Division 03 Section "Architectural Concrete" for general building applications of specially finished formed concrete.

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2. Division 31 Section "Earth Moving" for drainage fill under slabs-on-grade.

3. Division 32 Section "Concrete Paving" for concrete pavement and walks.

1.4 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements.

1.5 SUBMITTALS

B. Product Data: For each type of product indicated.

C. Shop Drawings

1. Submit shop drawings of all members to be furnished. Detail drawings of the members and their connections shall follow standard practice as set forth in the AISC "Manual of Struc-tural Steel Detailing" (Second Edition). In particular, welding shall be shown, using stand-ard AWS welding symbols. Show on detail drawings the paint to be used.

2. Shop drawings will not be accepted for review by the Engineer unless there is substantial evidence that the General Contractor or Construction Manager on the project has reviewed the submittal for compliance with the contract documents and has addressed questions to be responded to by the Contractor. All coordination items with other trades and submittals are to be performed and the submittal marked accordingly before submission. Failure to pro-vide the above will result in the submittal being returned and not reviewed.

3. Contractor shall perform review and schedule shop drawing submittals to permit a mini-mum of 15 calendar days for review by the Engineer. Shop Drawings will be returned to the Architect for their required review and processing.

4. Shop drawings will not be reviewed unless accompanied by erection drawings which lo-cates and identifies the members. Copies or reproductions of contract drawings will not be accepted or reviewed as shop drawings.

5. Shop drawings shall be submitted in the form of an electronic file (PDF).

6. The following is the definitions for the Shop Drawing stamp disposition:

No Exceptions Taken - Re-submission is not required unless document is revised.

Make Corrections Noted - If checked, fabrication may be undertaken. Contractor is re-sponsible for making noted corrections. Re-submission of record copies are required.

Revise and Resubmit - If checked, fabrication may not be undertaken. Resubmit corrected copies for final review, with all changes clouded.

Rejected - Resubmit for review.

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Reviewed – Reviewed for general compliance with the structural Contract Documents.

Proprietary items or items designed by Others are reviewed only and shall not be approved by MHAI. Resubmission is not required.

Corrections or comments made on shop drawings during this review do not relieve the

Contractor from compliance with the requirements of the project drawings and specifica-tions. This check is only for the review of general conformance with the information given in the Contract Documents. The Contractor is responsible for confirming and correlating all quantities and dimensions, selecting fabrication processes, techniques and sequence of construction, coordinating his work with that of other trades, and performing his work in accordance with OSHA requirements and other sections of the Project Specifications.

D. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

E. Steel Reinforcement Shop Drawings: Placing drawings that detail fabrication, bending, and placement. Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and supports for concrete reinforcement.

F. Construction Joint Layout: Indicate proposed construction joints required to construct the structure.

1. Location of construction joints is subject to approval of the Architect.

G. Material Certificates: For each of the following, signed by manufacturers:

1. Cementitious materials.

2. Admixtures.

3. Steel reinforcement and accessories.

4. Fiber reinforcement.

5. Waterstops.

6. Curing compounds.

7. Floor and slab treatments.

8. Bonding agents.

9. Adhesives.

10. Vapor retarders.

11. Semi-rigid joint filler.

12. Repair materials.

H. Material Test Reports: For the following, from a qualified testing agency, indicating compliance with requirements:

1. Aggregates.

I. Floor surface flatness and levelness measurements indicating compliance with specified tolerances.

J. Field quality-control reports.

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K. Minutes of pre-installation conference.

L. CT HPB documentation:

1. For all installed products and materials of the Section, submit the following information:

a. Cost breakdowns for the materials included in the Contractor or subcontractor's work. Cost breakdowns shall include total installed cost and material-only cost.

b. The percentages (by weight) of post-consumer and/or pre-consumer recycled con-tent in the supplied product(s).

c. Indication of location (city, state) of the manufacturing location of the supplied product(s) and the distance from the project site.

d. Indication of location (city, state) of the extraction, harvest or recovery location of the raw materials used to manufacture the supplied product(s) and the distance from the project site.

2. For all field-applied adhesives, sealants, paints and coatings relating to work of this Sec-tion, indicate the Volatile Organic Compound (VOC) content in grams/liter and whether the product meets the requirements of the California Department of Health Services

(CDHS) Standard Practice for the Testing of Volatile Organic Emissions from Various

Sources Using Small Scale Environmental Chambers, including 2004 Addenda.

3. Provided cut sheets with the Contractor's or subcontractor's stamp, confirming that the submitted products are the products installed in the Project.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: A qualified installer who employs on Project personnel qualified as

ACI-certified Flatwork Technician and Finisher and a supervisor who is an ACI-certified

Concrete Flatwork Technician.

B. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94/C 94M requirements for production facilities and equipment.

1. Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete

Production Facilities."

C. Testing Agency Qualifications: An independent agency, acceptable to authorities having jurisdiction, qualified according to ASTM C 1077 and ASTM E 329 for testing indicated.

1. Personnel conducting field tests shall be qualified as ACI Concrete Field Testing

Technician, Grade 1, according to ACI CP-1 or an equivalent certification program.

2. Personnel performing laboratory tests shall be ACI-certified Concrete Strength Testing

Technician and Concrete Laboratory Testing Technician - Grade I. Testing Agency laboratory supervisor shall be an ACI-certified Concrete Laboratory Testing Technician -

Grade II.

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D. Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from single source, and obtain admixtures from single source from single manufacturer.

E. ACI Publications: Comply with the following unless modified by requirements in the Contract

Documents:

1. ACI 301, "Specifications for Structural Concrete. Sections 1 through 5 and Section 7, "Lightweight Concrete."

2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

F. Concrete Testing Service: Owner will engage a qualified independent testing agency to perform material evaluation tests and to design concrete mixtures.

G. Preinstallation Conference: Conduct conference at Project site.

1. Before submitting design mixtures, review concrete design mixture and examine procedures for ensuring quality of concrete materials. Require representatives of each entity directly concerned with cast-in-place concrete to attend, including the following:

a. Contractor's superintendent.

b. Independent testing agency responsible for concrete design mixtures.

c. Ready-mix concrete manufacturer.

d. Concrete subcontractor.

e. Special concrete finish subcontractor.

2. Review special inspection and testing and inspecting agency procedures for field quality control, concrete finishes and finishing, cold- and hot-weather concreting procedures, curing procedures, construction contraction and isolation joints, and joint-filler strips, semi-rigid joint fillers, forms and form removal limitations, vapor-retarder installation, anchor rod and anchorage device installation tolerances, steel reinforcement installation, floor and slab flatness and levelness measurement, concrete repair procedures, and concrete protection.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Steel Reinforcement: Deliver, store, and handle steel reinforcement to prevent bending and damage.

B. Waterstops: Store waterstops under cover to protect from moisture, sunlight, dirt, oil, and other contaminants.

PART 2 - PRODUCTS

2.1 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true, and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints.

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1. Plywood, metal, or other approved panel materials.

2. Exterior-grade plywood panels, suitable for concrete forms, complying with DOC PS 1, and as follows:

a. High-density overlay, Class 1 or better.

b. Medium-density overlay, Class 1 or better; mill-release agent treated and edge sealed.

c. Structural 1, B-B or better; mill oiled and edge sealed.

d. B-B (Concrete Form), Class 1 or better; mill oiled and edge sealed.

B. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material.

Provide lumber dressed on at least two edges and one side for tight fit.

C. Chamfer Strips: Wood, metal, PVC, or rubber strips, 3/4 by 3/4 inch (19 by 19 mm), minimum.

D. Form-Release Agent: Commercially formulated form-release agent that will not bond with, stain, or adversely affect concrete surfaces and will not impair subsequent treatments of concrete surfaces.

1. Formulate form-release agent with rust inhibitor for steel form-facing materials.

E. Form Ties: Factory-fabricated, removable or snap-off metal or glass-fiber-reinforced plastic form ties designed to resist lateral pressure of fresh concrete on forms and to prevent spalling of concrete on removal.

1. Furnish units that will leave no corrodible metal closer than 1 inch (25 mm) to the plane of exposed concrete surface.

2. Furnish ties that, when removed, will leave holes no larger than 1 inch (25 mm) in diameter in concrete surface.

3. Furnish ties with integral water-barrier plates to walls indicated to receive dampproofing or waterproofing.

2.2 STEEL REINFORCEMENT

A. Recycled Content of Steel Products: Provide products with an average recycled content of steel products so postconsumer recycled content plus one-half of preconsumer recycled content is not less than 25 percent.

B. Reinforcing Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), deformed.

C. Steel Bar Mats: ASTM A 184/A 184M, fabricated from ASTM A 615/A 615M, Grade 60, deformed bars, assembled with clips.

D. Deformed-Steel Wire: ASTM A 496/A 496M.

E. Plain-Steel Welded Wire Reinforcement: ASTM A 185/A 185M, plain, fabricated from as-drawn steel wire into flat sheets.

F. Epoxy-Coated Welded Wire Reinforcement: ASTM A 884/A 884M, Class A coated, Type 1, plain steel.

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2.3 REINFORCEMENT ACCESSORIES

A. Joint Dowel Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), plain-steel bars, cut true to length with ends square and free of burrs.

B. Epoxy-Coated Joint Dowel Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), plain-steel bars, ASTM A 775/A 775M epoxy coated.

C. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from steel wire, plastic, or precast concrete according to CRSI's "Manual of Standard Practice," of greater compressive strength than concrete and as follows:

1. For concrete surfaces exposed to view where legs of wire bar supports contact forms, use

CRSI Class 1 plastic-protected steel wire or CRSI Class 2 stainless-steel bar supports.

2. For epoxy-coated reinforcement, use epoxy-coated or other dielectric-polymer-coated wire bar supports.

3. For zinc-coated reinforcement, use galvanized wire or dielectric-polymer-coated wire bar supports.

2.4 CONCRETE MATERIALS

A. Cementitious Material: Use the following cementitious materials, of the same type, brand, and source, throughout Project:

1. Portland Cement: ASTM C 150 Type I/II, gray

B. Normal-Weight Aggregates: ASTM C 33, Class 3S coarse aggregate or better, graded. Provide aggregates from a single source[ with documented service record data of at least 10 years' satisfactory service in similar applications and service conditions using similar aggregates and cementitious materials].

1. Maximum Coarse-Aggregate Size: 3/4 inch nominal.

2. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Lightweight Aggregate: ASTM C 330, 3/4-inch at typical slabs and 3/8-inch at stair pan slabs nominal maximum aggregate size.

D. Water: ASTM C 94/C 94M and potable.

2.5 ADMIXTURES

A. Air-Entraining Admixture: ASTM C 260.

B. Chemical Admixtures: Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete. Do not use calcium chloride or admixtures containing calcium chloride.

1. Water-Reducing Admixture: ASTM C 494/C 494M, Type A.

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2. Retarding Admixture: ASTM C 494/C 494M, Type B.

3. Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type D.

4. High-Range, Water-Reducing Admixture: ASTM C 494/C 494M, Type F.

5. High-Range, Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type G.

6. Plasticizing and Retarding Admixture: ASTM C 1017/C 1017M, Type II.

2.6 WATERSTOPS

A. Self-Expanding Butyl Strip Waterstops: Manufactured rectangular or trapezoidal strip, butyl rubber with sodium bentonite or other hydrophilic polymers, for adhesive bonding to concrete, 3/4 by 1 inch (19 by 25 mm).

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. Carlisle Coatings & Waterproofing, Inc.; MiraSTOP.

b. CETCO; Volclay Waterstop-RX.

c. Concrete Sealants Inc.; Conseal CS-231.

d. Greenstreak; Swellstop.

e. Henry Company, Sealants Division; Hydro-Flex.

f. JP Specialties, Inc.; Earth Shield Type 20.

2.7 VAPOR RETARDERS

A. Sheet Vapor Retarder: ASTM E 1745, Class A. Include manufacturer's recommended adhesive or pressure-sensitive tape.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. Carlisle Coatings & Waterproofing, Inc.; Blackline 400.

b. Fortifiber Building Systems Group; Moistop Ultra 15.

c. Grace Construction Products, W. R. Grace & Co.; Florprufe 120.

d. Raven Industries Inc.; Vapor Block 15.

e. Stego Industries, LLC; Stego Wrap 15 mil Class A.

2.8 LIQUID FLOOR TREATMENTS

A. Penetrating Liquid Floor Treatment: Clear, chemically reactive, waterborne solution of inor-ganic silicate or siliconate materials and proprietary components; odorless; that penetrates, hardens, and densifies concrete surfaces.

B. Products: Subject to compliance with requirements, provide one of the following:

1. Euco Chemical Co.; Euco Diamond Hard

2. Dayton Superior Corporation; Day-Chem Sure Hard.

3. BASF Chemical Company; Kure-N-Harden.

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2.9 CURING MATERIALS

A. Absorptive Cover: AASHTO M 182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. (305 g/sq. m) when dry.

B. Moisture-Retaining Cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet.

C. Water: Potable.

2.10 RELATED MATERIALS

A. Expansion- and Isolation-Joint-Filler Strips: ASTM D 1751, asphalt-saturated cellulosic fiber.

B. Bonding Agent: ASTM C 1059/C 1059M, Type II, non-redispersible, acrylic emulsion or styrene butadiene.

C. Reglets: Fabricate reglets of not less than 0.022-inch- (0.55-mm-) thick, galvanized-steel sheet.

Temporarily fill or cover face opening of reglet to prevent intrusion of concrete or debris.

D. Dovetail Anchor Slots: Hot-dip galvanized-steel sheet, not less than 0.034 inch (0.85 mm) thick, with bent tab anchors. Temporarily fill or cover face opening of slots to prevent intrusion of concrete or debris.

2.11 REPAIR MATERIALS

A. Repair Underlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/8 inch (3.2 mm) and that can be feathered at edges to match adjacent floor elevations.

1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219.

2. Primer: Product of underlayment manufacturer recommended for substrate, conditions, and application.

3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch (3.2 to 6 mm) or coarse sand as recommended by underlayment manufacturer.

4. Compressive Strength: Not less than 4100 psi at 28 days when tested according to

ASTM C 109/C 109M.

B. Repair Overlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/4 inch (6.4 mm) and that can be filled in over a scarified surface to match adjacent floor elevations.

1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219.

2. Primer: Product of topping manufacturer recommended for substrate, conditions, and application.

3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch (3.2 to 6 mm) or coarse sand as recommended by topping manufacturer.

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4. Compressive Strength: Not less than 5000 psi at 28 days when tested according to

ASTM C 109/C 109M.

2.12 CONCRETE MIXTURES, GENERAL

A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, according to ACI 301.

1. Use a qualified independent testing agency for preparing and reporting proposed mixture designs based on laboratory trial mixtures.

B. Cementitious Materials: Use fly ash, pozzolan, ground granulated blast-furnace slag, and silica fume as needed to reduce the total amount of portland cement, which would otherwise be used, by not less than 40 percent.

C. Limit water-soluble, chloride-ion content in hardened concrete to 0.06 percent by weight of cement.

D. Admixtures: Use admixtures according to manufacturer's written instructions.

1. Use high-range water-reducing or plasticizing admixture in concrete, as required, for placement and workability.

2. Use water reducing and retarding admixture when required by high temperatures, low humidity, or other adverse placement conditions.

3. Use water-reducing admixture in pumped concrete, and concrete with a water-cementitious materials ratio below 0.50.

4. Use corrosion-inhibiting admixture in concrete mixtures where indicated.

2.13 CONCRETE MIXTURES FOR BUILDING ELEMENTS

A. Footings and foundation walls: Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 4500 psi at 28 days.

2. Maximum Water-Cementitious Materials Ratio: 0.45.

3. Slump Limit: 4 inches for concrete with verified slump of 2 to 4 inches before adding high-range water-reducing admixture or plasticizing admixture, plus or minus 1 inch.

4. Air Content: 6 percent, plus or minus 1.5 percent at point of delivery for 3/4-inch nominal maximum aggregate size.

B. Slabs-on-Grade: Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 3500 psi at 28 days.

2. Water/ Cement ratio not to exceed 0.50.

3. Slump Limit: 4 inches, plus or minus 1 inch.

4. Air Content: Do not allow air content of…