In accordance with documents prepared by: Garofalo Design Associates, Inc.

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1 MA12-13, 15 Webster Square Towers West and East Addendum No. 1 DATE: August 22, 2017 Project: MA12-13, 15 Webster Square Towers West and East In accordance with documents prepared by: Garofalo Design Associates, Inc. TO: ALL PLANHOLDERS--BIDDERS--PROPOSERS--CONTRACTORS This Addendum No. 1 forms part of and modifies the Construction Documents dated July Acknowledge receipt of this Addendum in the space provided on the FORM FOR GENERAL BID. Failure to do so may subject the bidder to disqualification. The attention of bidders submitting bids for the above subject project is called to the following addendum to the specifications and drawings. The items set forth herein, whether of omission, addition, substitution, or clarifications are all to be included in and form a part of the bid submitted. This Addendum consists of ITEMS 1 through 13 which are hereby incorporated into the Bidding Documents: REVISION TO SPECIFICATIONS: ITEM NO. 1: Invitation For Bids; paragraph 1: DELETE: The work is estimated to cost $35,000. The work is estimated to cost $41,000. ITEM NO. 2: DELETE: Minimum Prevailing Wage General Decision Number MA Dated 07/28/2017 MA18. General Decision Number MA Dated 08/18/2017 MA18 attached as Attachment A. ITEM NO. 3: Section , General Duty Valves for Plumbing Piping; 1.2 SUMMARY, paragraph A. Section Includes: 3. Bronze Ball Valves. ITEM NO. 4: Section , GENERAL DUTY VALVES FOR PLUMBING PIPING; PART 2 - PRODUCTS Section 2.4 BRONZE BALL VALVES A. One-Piece, Reduced-Port, Bronze Ball Valves with Bronze Trim: 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following available manufacturers offering ADDENDUM NO. 1 Page 1 of 3

2 MA12-13, 15 Webster Square Towers West and East products that may be incorporated into the Work include, but are not limited to, the following: a. American Valve, Inc. b. Conbraco Industries, Inc.; Apollo Valves. c. NIBCO INC. 2. Description: a. Standard: MSS SP-110. b. CWP Rating: 400 psig. c. Body Design: One piece. d. Body Material: Bronze. e. Ends: Threaded. f. Seats: PTFE or TFE. g. Stem: Bronze. h. Ball: Chrome-plated brass. i. Port: Reduced. ITEM NO. 5: ITEM NO. 6: ITEM NO. 7: Section , GENERAL DUTY VALVES FOR PLUMBING PIPING; PART 3 EXECUTION; 3.3 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS, paragraph C 3. NPS 2 and Smaller: Threaded ends. Section , GENERAL DUTY VALVES FOR PLUMBING PIPING; PART 3 EXECUTION; 3.4 DOMESTIC, HOT-AND COLD-WATER VALVE SCHEDULE B. Pipe NPS 2 and Smaller: 1. Bronze Valves. 2. Ball Valves: One piece, full port, bronze with bronze trim. Section , DOMESTIC WATER PIPING; PART 3 EXECUTION; 3.11 PIPING SCHEDULE F. Aboveground domestic water piping NPS 2 and smaller shall be one of the following: 1. Hard copper tube, ASTM B 88, Type L; copper pressure-seal-joint fittings, and pressure sealed joints. ITEM NO. 8: Section , DOMESTIC WATER PIPING SPECIALTIES; Part 2- PRODUCTS; 2.2 BACKFLOW PREVENTERS, paragraph A. Reduced- Pressure-Principle Backflow Preventers DELETE: 4. Size: 4 and Size: and 6. ADDENDUM NO. 1 Page 2 of 3

3 MA12-13, 15 Webster Square Towers West and East ITEM NO. 9: Section , DOMESTIC WATER PIPING SPECIALTIES; Part 2- PRODUCTS; 2.2 BACKFLOW PREVENTERS; paragraph A. Reduced- Pressure-Principle Backflow Preventers, item no. 8. Accessories c. Valves NPS 2 and smaller: ball type with threaded ends on inlet and outlet. ITEM NO. 10: Section , DOMESTIC WATER PIPING SPECIALTIES; Part 2- PRODUCTS; 2.3 STRAINERS FOR DOMESTIC WATER PIPING, paragraph A. Y-Pattern Strainers DELETE: Item No. 2 in its entirety. 2. Body: Bronze for NPS 2 and smaller; cast iron with interior lining that complies with AWWA C550 or that is FDA approved for NPS 2-½ and larger. ITEM NO. 11: Section , DOMESTIC WATER PIPING SPECIALTIES; Part 2- PRODUCTS; 2.3 STRAINERS FOR DOMESTIC WATER PIPING, paragraph A. Y-Pattern Strainers DELETE: Item No. 3 in its entirety. 3. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger. ITEM NO. 12: Section , DOMESTIC WATER PIPING SPECIALTIES; Part 2- PRODUCTS; 2.3 STRAINERS FOR DOMESTIC WATER PIPING, paragraph A. Y-Pattern Strainers; Item No. 5 c. Strainers NPS 2 and smaller: inch. REVISION TO DRAWINGS: ITEM NO. 13: Sheet P-1.0 DELETE: Sheet P-1.0 in its entirety. Sheet P-1.0 with Revision No. 1 dated 8/22/17 attached as Attachment B. The date of the general bid remains unchanged. All other terms and conditions of these contract documents remain unchanged. Attachments: A. General Decision Number Dated 08/18/2017 MA18 (7 pages). B. Sheet P 1.0 with Revision No. 1 dated 8/22/17 (1 page). FAILURE TO ACKNOWLEDGE THIS ADDENDUM ON YOUR BID FORMS MAY BE CAUSE FOR BID REJECTION. ADDENDUM NO. 1 Page 3 of 3

4 Minimum Wage General Decision Number: MA /18/2017 MA18 Superseded General Decision Number: MA State: Massachusetts Construction Type: Building County: Worcester County in Massachusetts. BUILDING CONSTRUCTION PROJECTS (does not include single family homes or apartments up to and including 4 stories). Note: Under Executive Order (EO) 13658, an hourly minimum wage of $10.20 for calendar year 2017 applies to all contracts subject to the Davis-Bacon Act for which the contract is awarded (and any solicitation was issued) on or after January 1, If this contract is covered by the EO, the contractor must pay all workers in any classification listed on this wage determination at least $10.20 (or the applicable wage rate listed on this wage determination, if it is higher) for all hours spent performing on the contract in calendar year The EO minimum wage rate will be adjusted annually. Additional information on contractor requirements and worker protections under the EO is available at Modification Number Publication Date 0 01/06/ /03/ /03/ /10/ /17/ /07/ /14/ /05/ /12/ /09/ /16/ /28/ /04/ /18/2017 ASBE /01/2016 Page 1 of 7

5 ASBESTOS WORKER/HEAT & FROST INSULATOR (Duct, Pipe, & Mechanical System Insulation)...$ BRMA /01/2017 TILE FINISHER...$ TILE SETTER...$ BRMA /01/2017 BRICKLAYER (Includes Pointing, Caulking, Cleaning, and Waterproofing)...$ CARP /01/2016 CARPENTER (Includes Acoustical Ceiling installation, Batt Insulation, Drywall Hanging, Form Work, Metal Building-Metal Siding/Wall Panels, Metal Stud Installation, Scaffold Building, Fireproofer, Window and Curtain Wall Installation)...$ ELEC /01/2017 ELECTRICIAN Includes HVAC/Temperature Controls Installation...$ % Low Voltage Wiring...$ ELEV /01/2017 Page 2 of 7

6 ELEVATOR MECHANIC...$ a+b FOOTNOTE: a.vacation: 6%/under 5 years based on regular hourly rate for all hours worked. 8%/over 5 years based on regular hourly rate for all hours worked. b. PAID HOLIDAYS: New Year's Day; Memorial Day; Independence Day; Labor Day; Veterans' Day; Thanksgiving Day; the Friday after Thanksgiving Day; and Christmas Day. ENGI /01/2017 POWER EQUIPMENT OPERATOR GROUP 1: Backhoe/Excavator/Trackhoe, Loader...$ A GROUP 2: Bulldozer...$ A FOOTNOTE: A. Paid Holidays: New Year's Day, Washington's Birthday, Memorial Day, Independence Day, Patriot's Day, Columbus Day, Labor Day, Vetersns Day; Thanksgiving Day and Christmas Day. IRON /16/2017 IRONWORKER (Ornamental, Reinforcing, and Structural)...$ LABR /01/2016 LABORER (Mason Tender-Brick)...$ * PAIN /01/2017 PAINTER (Brush/Roller, Page 3 of 7

7 Including Drywall Finisher/Taper)...$ PLUM /01/2017 PLUMBER/PIPEFITTER (Includes HVAC Pipe and Unit Installation)...$ ROOF /01/2017 ROOFER...$ SHEE /01/2016 SHEET METAL WORKER (Includes HVAC Duct and Unit Installation)...$ SUMA /04/2016 LABORER: Common or General...$ WELDERS - Receive rate prescribed for craft performing operation to which welding is incidental. ================================================================ Note: Executive Order (EO) 13706, Establishing Paid Sick Leave for Federal Contractors applies to all contracts subject to the Davis-Bacon Act for which the contract is awarded (and any solicitation was issued) on or after January 1, If this contract is covered by the EO, the contractor must provide employees with 1 hour of paid sick leave for every 30 hours they work, up to 56 hours of paid sick leave each year. Employees must be permitted to use paid sick leave for their own illness, injury or other health-related needs, including preventive care; to assist a family member (or person who is like family to the employee) who is ill, injured, or has other Page 4 of 7

8 health-related needs, including preventive care; or for reasons resulting from, or to assist a family member (or person who is like family to the employee) who is a victim of, domestic violence, sexual assault, or stalking. Additional information on contractor requirements and worker protections under the EO is available at Unlisted classifications needed for work not included within the scope of the classifications listed may be added after award only as provided in the labor standards contract clauses (29CFR 5.5 (a) (1) (ii)). The body of each wage determination lists the classification and wage rates that have been found to be prevailing for the cited type(s) of construction in the area covered by the wage determination. The classifications are listed in alphabetical order of "identifiers" that indicate whether the particular rate is a union rate (current union negotiated rate for local), a survey rate (weighted average rate) or a union average rate (weighted union average rate). Union Rate Identifiers A four letter classification abbreviation identifier enclosed in dotted lines beginning with characters other than "SU" or "UAVG" denotes that the union classification and rate were prevailing for that classification in the survey. Example: PLUM /01/2014. PLUM is an abbreviation identifier of the union which prevailed in the survey for this classification, which in this example would be Plumbers indicates the local union number or district council number where applicable, i.e., Plumbers Local The next number, 005 in the example, is an internal number used in processing the wage determination. 07/01/2014 is the effective date of the most current negotiated rate, which in this example is July 1, Union prevailing wage rates are updated to reflect all rate changes in the collective bargaining agreement (CBA) governing this classification and rate. Survey Rate Identifiers Classifications listed under the "SU" identifier indicate that Page 5 of 7

9 no one rate prevailed for this classification in the survey and the published rate is derived by computing a weighted average rate based on all the rates reported in the survey for that classification. As this weighted average rate includes all rates reported in the survey, it may include both union and non-union rates. Example: SULA /13/2014. SU indicates the rates are survey rates based on a weighted average calculation of rates and are not majority rates. LA indicates the State of Louisiana is the year of survey on which these classifications and rates are based. The next number, 007 in the example, is an internal number used in producing the wage determination. 5/13/2014 indicates the survey completion date for the classifications and rates under that identifier. Survey wage rates are not updated and remain in effect until a new survey is conducted. Union Average Rate Identifiers Classification(s) listed under the UAVG identifier indicate that no single majority rate prevailed for those classifications; however, 100% of the data reported for the classifications was union data. EXAMPLE: UAVG-OH /29/2014. UAVG indicates that the rate is a weighted union average rate. OH indicates the state. The next number, 0010 in the example, is an internal number used in producing the wage determination. 08/29/2014 indicates the survey completion date for the classifications and rates under that identifier. A UAVG rate will be updated once a year, usually in January of each year, to reflect a weighted average of the current negotiated/cba rate of the union locals from which the rate is based. WAGE DETERMINATION APPEALS PROCESS 1.) Has there been an initial decision in the matter? This can be: * an existing published wage determination * a survey underlying a wage determination * a Wage and Hour Division letter setting forth a position on a wage determination matter * a conformance (additional classification and rate) ruling On survey related matters, initial contact, including requests Page 6 of 7

10 for summaries of surveys, should be with the Wage and Hour Regional Office for the area in which the survey was conducted because those Regional Offices have responsibility for the Davis-Bacon survey program. If the response from this initial contact is not satisfactory, then the process described in 2.) and 3.) should be followed. With regard to any other matter not yet ripe for the formal process described here, initial contact should be with the Branch of Construction Wage Determinations. Write to: Branch of Construction Wage Determinations Wage and Hour Division U.S. Department of Labor 200 Constitution Avenue, N.W. Washington, DC ) If the answer to the question in 1.) is yes, then an interested party (those affected by the action) can request review and reconsideration from the Wage and Hour Administrator (See 29 CFR Part 1.8 and 29 CFR Part 7). Write to: Wage and Hour Administrator U.S. Department of Labor 200 Constitution Avenue, N.W. Washington, DC The request should be accompanied by a full statement of the interested party's position and by any information (wage payment data, project description, area practice material, etc.) that the requestor considers relevant to the issue. 3.) If the decision of the Administrator is not favorable, an interested party may appeal directly to the Administrative Review Board (formerly the Wage Appeals Board). Write to: Administrative Review Board U.S. Department of Labor 200 Constitution Avenue, N.W. Washington, DC ) All decisions by the Administrative Review Board are final. ================================================================ END OF GENERAL DECISION END OF DOCUMENT Page 7 of 7

11 GENERAL PLUMBING NOTES P I P E L I N E T Y P E S A B B R E V I A T I O N S NO. 1 DATE: 08/22/2017 DESCRIPTION: ADDENDUM 1 NO. DATE DESCRIPTION NO. DATE DESCRIPTION NO. DATE DESCRIPTION NO. DATE DESCRIPTION REVISIONS S Y M B O L S 5 DOMESTIC WATER SYSTEM 1050 MAIN ST. WEBSTER SQUARE EAST BACKFLOW PREVENTER SCALE: N.T.S. 6 DOMESTIC WATER SYSTEM 1060 MAIN ST. WEBSTER SQUARE WEST BACKFLOW PREVENTER SCALE: N.T.S. ENGINEER'S STAMP BACKFLOW PREVENTER INSTALLATION AT MA 12-13, 15 WEBSTER SQUARE TOWERS WEST AND EAST PROJECT TITLE PLUMBING PLAN DRAWING TITLE SCALE: 1/4"=1'-0" DRAWN BY: JS CHECKED BY: DATE: 06/20/2017 FILENAME: WHA TASK ORDER 2 PROJECT NO: CLEVIS / ROD PIPE HANGER DETAIL SCALE: NONE ATTACHMENT B P-1.0 SHEET NUMBER