RFB #8373 Addendum #01 09/11/2020 RFB #8373 Chiller …

RFB #8373 Addendum #01 09/11/2020

RFB #8373 Chiller Base Demolition and Rehabilitation Project Addendum #01 Contents Item Content 1.01 Q&A 1.02 09-12-2018 Chiller exteriors lead test results (positive) 1.03 02-19-2020 Chiller pads lead test results (positive) 1.04 09-10-2020 Pipe insulation boiler room asbestos test results (negative) 1.05 Spec section 40 42 00 Process Piping and Equipment Insulation

RFB #8373 Addendum #01 09/11/2020

Addendum #01 Item 1.01: Q&A 1. Is the coating of the existing equipment concrete pads lead based?

a. Yes, the paint on Chiller pads #1 and #2 are positive for lead. You will find lead testing results of the chiller pads, dated September 19, 2020 following the Q&A.

2. Is the paint on the chiller support legs lead based? a. There may be lead present on the legs. They were not specifically tested, only the chiller pads and

exterior of the chillers. You will find lead testing results of the exterior of chillers 1 & 2, reading positive for lead dated September 12, 2018 following the Q&A. It would be most conservative to assume that the exterior of the chiller and the legs were coated simultaneously during production. This would mean the legs/supports fall under the same test results as the entire exterior of the tank, (positive).

3. What paint system shall be used for touch up painting, if needed, on the chiller support legs after the removal of temporary shoring/support?

a. Carboguard 890 as primer (if bare metal is present), otherwise Sherwin Williams Procryl primer. Shercryl HPA B66-300 (ANSI Gray) as top coat. Proper ventilation required when applying solvent based coatings within the plant tunnel system.

4. If equipment piping insulation needs to be repaired/replaced, what type/specification shall be used? a. Refer to spec 40 42 00 for insulation to be used for this project.

5. Does electrical lines running across the existing equipment pads need to be removed/relocated (typical on both chillers)? (See photo attached)

a. Electrical lines running across the chiller pads do not need to be removed and relocated but will need to be supported after the concrete pads are removed.

6. Is it acceptable to weld temporary support steel to the chiller support legs?

a. Welding temporary supporting steel to the chiller support legs will be acceptable. Any welds done for support shall be properly removed when they are no longer needed and shall be coated with the coating listed above in the answer for question 3.

7. Will Regional San be providing be providing restrooms and break area for our workers, or will we need to provide?

a. Regional San has restrooms and a breakroom adjacent to the project area, that can be used by the contractor.

8. Will demolished materials be able to be disposed of onsite? a. All demolished materials are to be disposed of offsite by the contractor. Please refer to spec section 02

83 19.15 for disposal specifics.

September 12, 2018

Deborah CelestreRegional San - Safety8521 Laguna Station RoadElk Grove, CA 95758

Work Order No :RE:Project ID:

Dear Deborah Celestre:

SRWTP Lead Paint Testing69463

Enclosed are the analytical results for sample(s) received by the laboratory on Friday,September 07, 2018. Results reported herein conform to the most current ELAP standards,where applicable, unless otherwise noted in the body of the report.

Results are reported in mg/kg (dry weight) as received.

If you have any questions concerning this report, please feel free to contact me.

Sincerely,

Justin Nordin

[email protected] Coordinator

Srividhya RamamoorthyQA Officer Lab Manager

cc: Scott Danhouser, Regional San

Amy Saylor

Sacramento Regional County Sanitation District

8521 Laguna Station RoadElk Grove, CA 95758

Phone: (916) 875-9000 Fax: (916) 875-9069

Regional San Environmental Laboratory

REPORT OF LABORATORY ANALYSISThis report shall not be reproduced, except in full, without the written consent of Sacramento Regional County Sanitation District. ELAP Certification #1100

Print Date: 09/12/2018 Page 1 of 6

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RFB 8373 Addendum 1 Item 1.02 09/11/2020

SAMPLE SUMMARY

Work Order No:

Project ID:

69463

SRWTP Lead Paint Testing

Lab ID Sample ID Matrix Date Collected Date Received

1809070037 MP Sludge Gas Pipe Solid 09/06/2018 13:47 09/07/2018 09:37

1809070038 Exterior Chiller #1 Solid 09/06/2018 13:42 09/07/2018 09:37

1809070039 Exterior Chiller #2 Solid 09/06/2018 13:38 09/07/2018 09:37



Phone: (916) 875-9000 Fax: (916) 875-9069




ANALYTICAL RESULTS

Work Order No:

Project ID:

69463


1809070037

MP Sludge Gas Pipe

Matrix: SolidDate Collected:

Date Received:

9/6/2018 13:47

9/7/2018 09:37

Parameter Results RLUnits

Lab ID:

Sample ID:

AnalyzedMDL ByMethod DF

METALS

09/11/2018100mg/kg640Lead,Total Recoverable 1 100 NCHEPA 6020

1809070038

Exterior Chiller #1


Date Received:

9/6/2018 13:42

9/7/2018 09:37


Lab ID:

Sample ID:


METALS

09/11/2018100mg/kg7,700Lead,Total Recoverable 1 100 NCHEPA 6020

1809070039

Exterior Chiller #2


Date Received:

9/6/2018 13:38

9/7/2018 09:37


Lab ID:

Sample ID:


METALS

09/11/2018100mg/kg12,000Lead,Total Recoverable 1 100 NCHEPA 6020



Phone: (916) 875-9000 Fax: (916) 875-9069




ANALYTICAL RESULTS QUALIFIERS

Work Order No:

Project ID:

69463


PARAMETER QUALIFIERS

J - The analytical result is below RL but above MDL.

MDL - Method Detection Limit defined in 40 CFR, Sect. 136, Appendix B.

ND - Non Detect - Analyte not detected above the MDL or, in the absence of a MDL, above the RL.

RL - Reporting limit is the quantitation limit at which the laboratory is able to detect an analyte with a certaindegree of confidence. Generally, this represents the parameter's lowest calibration point. This can also definethe customer's requirement.

(S) - Surrogates

DF - Dilution Factor

NA - Not Applicable

VS and VSS results reported as percentages of TS and TSS.

MBAS, calculated as LAS, mol wt 340

Total Alkalinity is titrated to pH 4.5 per the method. This may not correspond to an inflection point where theslope changes rapidly.



Phone: (916) 875-9000 Fax: (916) 875-9069




QUALITY CONTROL DATA

Work Order No:

Project ID:

69463


QC Batch:

QC Batch Method:

METP/5792

EPA 6020

Analysis Method:

Analysis Description:

EPA 6020

Total Recoverable Metals Prep for Solids

Associated Lab Samples: 1808310029 1808310030 1808310031 1808310032 1809070037 18090700381809070039Associated Lab Samples:

METHOD BLANK: 298288

Associated Lab Samples: 1809070038 1809070039 1809070037

Parameter UnitsResultBlank

LimitReporting

QualifierMDL

Lead,Total Recoverable ND mg/kg0.0010 0.00026

LABORATORY CONTROL SAMPLE & LCSD:

Parameter

LCS-298289 LCSD-298290

% RecLCS LCSD

% Rec% RecLimit RPD RPD

Max

Lead,Total Recoverable 113 80-120112 0.59 20

MATRIX SPIKE & MATRIX SPIKE DUPLICATE:

Parameter

MS-298291 MSD-298292

% RecMS MSD

% Rec% RecLimits RPD RPD

MaxAssociated Lab Sample: 1809070039

Qualifier

Lead,Total Recoverable 219 75-125169 3.7 [1]25



Phone: (916) 875-9000 Fax: (916) 875-9069




QUALITY CONTROL DATA QUALIFIERS

Work Order No:

Project ID:

69463


QUALITY CONTROL PARAMETER QUALIFIERS

Result Qualifiers:These descriptors are used to help identify the specific QC samples and clarify the report.

MB - Method Blank

LCS - Laboratory Control Standard

DUP - Duplicate of Original Sample Matrix

MS/MSD - Matrix Spike/Matrix Spike Duplicate

RPD -Relative Percent Difference

% Rec - Spike Recovery stated as a percentage

QC - Total QC applies to total recoverable

The spike recovery was outside of control limits due to the high analyte concentration in the sample. Thebatch was accepted based on LCS/LCSD recoveries.

[1]



Phone: (916) 875-9000 Fax: (916) 875-9069




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February 19, 2020

Deborah CelestreRegional San8521 Laguna Station Rd.Elk Grove, CA 95758

Work Order No:RE:Project ID: SRWTP Lead Paint Testing

73921

Dear Deborah Celestre:

Enclosed are the analytical results for sample(s) received by the laboratory on Tuesday, February 11, 2020. Results reported herein conform to the most current ELAP standards, where applicable, unless otherwise noted in the body of the report.

Results are reported in mg/kg (dry weight) as received.This report is late. We apologize for any inconvenience this may have caused.If you have any questions concerning this report, please feel free to contact me.

Sincerely,

James Noss

[email protected] Coordinator

Srividhya RamamoorthyQA Officer Lab Manager

cc: Scott Danhouser

Justin Nordin



Phone: (916) 875-9000 Fax: (916) 875-9069




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SAMPLE SUMMARY

Work Order No:

Project ID:

73921


Lab ID Sample ID Matrix Date Collected Date Received

2002110093 Chiller #1 PAD Solid 02/11/2020 12:38 02/11/2020 14:06

2002110094 Chiller #2 PAD Solid 02/11/2020 12:35 02/11/2020 14:06



Phone: (916) 875-9000 Fax: (916) 875-9069




ANALYTICAL RESULTS

Work Order No:

Project ID:

73921


2002110093

Chiller #1 PAD


Date Received:

2/11/2020 12:38

2/11/2020 14:06


Lab ID:

Sample ID:


METALS


2002110094

Chiller #2 PAD


Date Received:

2/11/2020 12:35

2/11/2020 14:06


Lab ID:

Sample ID:


METALS




Phone: (916) 875-9000 Fax: (916) 875-9069




ANALYTICAL RESULTS QUALIFIERS

Work Order No:

Project ID:

73921


PARAMETER QUALIFIERS

J - The analytical result is below RL but above MDL.

MDL - Method Detection Limit defined in 40 CFR, Sect. 136, Appendix B.

ND - Non Detect - Analyte not detected above the MDL or, in the absence of a MDL, above the RL

RL - Reporting limit is the quantitation limit at which the laboratory is able to detect an analyte with a certaindegree of confidence. Generally, this represents the parameter's lowest calibration point. This can also definethe customer's requirement.

(S) - Surrogates.

DF - Dilution Factor.

NA - Not Applicable.

VS and VSS results reported as percentages of TS and TSS.

MBAS, calculated as LAS, mol wt 340.

Total Alkalinity is titrated to pH 4.5 per the method. This may not correspond to an inflection point where theslope changes rapidly.



Phone: (916) 875-9000 Fax: (916) 875-9069




QUALITY CONTROL DATA

Work Order No:

Project ID:

73921


QC Batch:

QC Batch Method:

METP/6108

EPA 6020

Analysis Method:

Analysis Description:

EPA 6020

Total Recoverable Metals Prep for Solids

Associated Lab Samples: 2002110077 2002110078 2002110079 2002110080 2002110093 2002110094

METHOD BLANK: 333791

Associated Lab Samples: 2002110094 2002110093

Parameter UnitsResultBlank

LimitReporting

QualifierMDL

Lead,Total Recoverable ND mg/kg0.0010 0.00067

LABORATORY CONTROL SAMPLE & LCSD:

Parameter

LCS-333792 LCSD-333793

% RecLCS LCSD

% Rec% RecLimit RPD RPD

Max


MATRIX SPIKE & MATRIX SPIKE DUPLICATE:

Parameter

MS-333794 MSD-333795

% RecMS MSD

% Rec% RecLimits RPD RPD

MaxAssociated Lab Sample: 2002110077

Qualifier




Phone: (916) 875-9000 Fax: (916) 875-9069




QUALITY CONTROL DATA QUALIFIERS

Work Order No:

Project ID:

73921


QUALITY CONTROL PARAMETER QUALIFIERS

Result Qualifiers:These descriptors are used to help identify the specific QC samples and clarify the report.

MB - Method Blank.

LCS - Laboratory Control Standard.

DUP - Duplicate of Original Sample Matrix.

MS/MSD - Matrix Spike/Matrix Spike Duplicate.

RPD -Relative Percent Difference.

% Rec - Spike Recovery stated as a percentage.

QC - Total QC applies to total recoverable.



Phone: (916) 875-9000 Fax: (916) 875-9069




ASBESTECH 6825 Fair Oaks Blvd., Suite 103 Carmichael, California 95608 Tel.(916) 481-8902 [email protected] ______________________________________________________________________________

THE ANALYSIS USES POLARIZED LIGHT MICROSCOPY AND DISPERSION STAINING FOLLOWING E.P.A. METHOD 600/R-93/116. NON-FRIABLE MATERIALS WERE ANALYZED APPLYING THE SAME METHOD. THE LOWER DETECTION LIMIT IS <1 % WITH THE PROVISO THAT PLM MAY NOT DETECT FIBERS <0.25 MICRONS IN DIAMETER THAT MAY BE PRESENT IN SAMPLES SUCH AS FLOOR TILES. IN ACCORDANCE WITH TITLE 22, CCR, SECTION 66261.24(a)(2)(A),THE MCL IS 1 %. SAMPLES WERE NOT COLLECTED BY ASBESTECH. THIS REPORT MUST NOT BE REPRODUCED EXCEPT IN FULL WITHOUT THE APPROVAL OF ASBESTECH. THIS REPORT RELATES ONLY TO THE ITEMS TESTED. THIS REPORT MUST NOT BE USED TO CLAIM PRODUCT ENDORSEMENT BY N.V.L.A.P. OR ANY AGENCY OF THE U.S. GOVERNMENT. ASBESTECH ACCEPTS TECHNICAL RESPONSIBILITY FOR THIS REPORT AND DATE OF ISSUE.

NVLAP LABORATORY DIRECTOR: TOM CONLON ANALYST:TOM CONLON

Client: Job: County of Sacramento, Architectural Services Div./ Jim Eubanks SRWTP Influent/Effluent Bldg. 9660 Ecology Lane Boiler Room Sacramento, CA 95827 0983

BULK ASBESTOS ANALYSIS REPORT LAB JOB # 67851 NVLAP # 101442 Date/Time Collected: 9/10/20 CDPH # 1153 Date Received: 9/10/20 Date Analyzed: 9/10/20 Sample No. Color/Description % Type Asbestos Other Materials B001-0983- 91020 Red chiller insulation Influent/Effluent NONE DETECTED Opaques chiller Boiler room White-yellow insulation NONE DETECTED Fibrous Glass Cellulose B002-0983- 91020 Gray concrete pad Chiller Influent/ NONE DETECTED Granular Mins. Effluent Boiler room Opaques

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09/11/20 Last modified by RFB #8373 addendum #01

Chiller Base Demolition and Rehab 40 42 00 - 1

SECTION 40 42 00

PROCESS PIPING AND EQUIPMENT INSULATION

PART 1 -- GENERAL

1.01 GENERAL REQUIREMENTS

A. SCOPE:

1. This section specifies insulation for exposed piping, equipment, and appurtenances.

1.02 REFERENCES

A. REFERENCE STANDARDS: The publications referred to hereinafter form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only. The latest edition of referenced publications in effect at the time of the bid shall govern. In case of conflict between the requirements of this section and the listed standards, the requirements of this section shall prevail.

Reference Title

ASTM B209 Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

ASTM C533 Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation

ASTM C534/C534M

Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form

ASTM C547 Standard Specification for Mineral Fiber Pipe Insulation ASTM E84 Rev B Standard Test Method for Surface Burning Characteristics of

Building Materials ASTM E96/E96M Standard Test Methods for Water Vapor Transmission of

Materials

B. DEFINITIONS: (Not Used)

1.03 SUBMITTALS

A. The following information shall be submitted for review in accordance with SUBMITTAL PROCEDURES Section (01 33 00):

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1. A copy of this specification, with addenda updates, with each paragraph check marked to show specification compliance or marked to show deviations.

2. Manufacturer's information and catalog data showing compliance with this specification and a full description of the product.

1.04 OPERATION AND MAINTENANCE INSTRUCTIONS (NOT USED)

PART 2 -- PRODUCTS

2.01 GENERAL (NOT USED)

2.02 PIPING INSULATION

A. PIPING INSULATION SCHEDULE: (NOT USED)

B. ELASTOMERIC TYPE:

1. ACCEPTABLE PRODUCTS: Aeroflex USA series Aerocel-SSPT; or equal, modified as required to meet the specifications.

2. MATERIAL:

a. EPDM closed-cell foam insulation shall conform to the requirements of ASTM C534/C534M, Type I. Temperature range: -40°F to +220°F. Insulation shall be UV-rated for installation outdoors without a jacket or coating.

b. Insulation seam tape shall be pre-installed in both the seam and overlap.

c. Include low VOC contact adhesive for end seams and custom seams.

d. Include seam tape for sealing all end seams and custom seams.

e. Include high-density foam thermal pipe hanger shields designed specifically for the elastomeric foam pipe insulation.



C. FIBERGLASS TYPE:

1. ACCEPTABLE PRODUCTS: Johns Manville Micro-Lok HP; CertainTeed Snap*On with ASJ; CertaBlue Bond SSL; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. Fiberglass type insulation with all service jacket and self-sealing lap shall conform to the requirements of ASTM C547. Temperature range: -20°F to 850°F.

D. EXPANDED POLYSTYRENE TYPE:

1. ACCEPTABLE PRODUCTS: Dow Plastics model STYROFOAM; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. Expanded polystyrene rigid closed-cell foam insulation. Temperature range: -297°F to +165°F.

E. POLYISOCYANURATE TYPE:

1. ACCEPTABLE PRODUCTS: Dow Plastics model TRYMER; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. Polyisocyanurate closed-cell foam insulation. Temperature range: -297°F to +300°F.

F. CALCIUM SILICATE TYPE:

1. ACCEPTABLE PRODUCTS: Johns Manville Thermo-12/Gold; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. Calcium silicate type insulation shall conform to the requirements of ASTM C533, Type I. Temperature range: +100°F to +1200°F.

2.03 EQUIPMENT INSULATION

A. EQUIPMENT INSULATION SCHEDULE: (NOT USED)

B. ELASTOMERIC TYPE:



1. ACCEPTABLE PRODUCTS: Aeroflex USA series Aerocel sheet and roll insulation; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. EPDM closed-cell foam insulation shall conform to the requirements of ASTM C534/C534M, Type II. Temperature range: -40°F to +220°F. Insulation shall be UV-rated for installation outdoors without a jacket or coating.

b. Include low VOC contact adhesive for all seams and joints.

c. Include seam tape for sealing all seams and joints.

C. FIBERGLASS TYPE:

1. ACCEPTABLE PRODUCTS: Johns Manville 800 Series Spin-Glas; CertainTeed IB Board; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. Fiberglass board type insulation with FSK facing shall conform to the requirements of ASTM E84 Rev B (25/50). Temperature range: -20°F to 450°F. Density shall be as required for particular application.

2.04 INSULATION JACKETS

A. ALUMINUM JACKETS:

1. MATERIALS:

a. Aluminum jackets shall be constructed of smooth finish aluminum sheet conforming to ASTM B209, alloy 5005, temper H16, with integral vapor barrier. Jackets shall be 0.016 inch thick.

b. Sheet metal screws shall be aluminum or stainless steel.

c. Jackets shall be secured with 0.020 by 3/4 inch type 304 stainless steel expansion bands.

B. POLYVINYLCHLORIDE (PVC) JACKETS:

1. ACCEPTABLE PRODUCTS: Johns Manville Zeston® 300 Series PVC; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. PVC jackets shall be UV-resistant polyvinylchloride, 20 mil thickness, rated flame spread = 5 in accordance with ASTM E84.



2.05 INSULATION FITTING COVERS

A. POLYVINYLCHLORIDE (PVC) FITTING COVERS:

1. ACCEPTABLE PRODUCTS: John Manville Zeston® 300 Series PVC; or equal, modified as required to meet the specifications.

2. MATERIALS:

a. PVC fitting covers shall be one piece, pre-molded UV-resistant polyvinylchloride, 20 mil thickness, rated flame spread = 5 in accordance with ASTM E84 Rev B.

B. ALUMINUM FITTING COVERS:

1. MATERIALS:

a. Aluminum covers shall be constructed of smooth finish aluminum sheet conforming to ASTM B209, Alloy 5005, temper H16, with integral vapor barrier. Covers shall be 0.016 inch thick.

2.06 REUSABLE FITTING BLANKETS

A. MATERIALS:

1. Reusable fitting blankets shall be designed for access to valves, flanges, etc. The reusable blanket shall be custom sewn, with TFE-coated fiberglass cloth jacket and liner, fiberglass insulation and stainless steel lacing anchors.

2.07 SHIELDS (NOT USED)

2.08 ANTI-CONDENSATION COATING

A. ACCEPTABLE PRODUCTS: Chemicoat Inc. model Aquaban; or equal, modified as required to meet the specifications.

B. MATERIALS:

1. Water-based coating for direct application to galvanized steel, mild steel, bonderite steel, PVC, masonite, concrete, wood, and aluminum. Coating shall be non-toxic and fire resistant. Coating shall prevent condensation from forming on the coated surface.



PART 3 -- EXECUTION

3.01 GENERAL (NOT USED)

3.02 INSTALLATION

A. PIPING:

1. Install insulation in accordance with the drawings and the manufacturer’s recommendations. Seal off ends of fiberglass insulation with vapor barrier coating.

2. Install jacketing and fitting covers in accordance with the drawings and the manufacturer’s recommendations. Locate seams on underside of piping. Form aluminum caps to fit over the adjacent jacketing and to completely cover coated insulation ends. Secure caps in place with a jacket strap.

3. Install reusable fitting blankets on valves and on flanges where access is required. Seal ends of pipe insulation.

B. PUMPS:

1. Do not insulate pumps.

2. Coat chilled water pumps with anti-condensation coating in accordance with the manufacturer’s recommendations. Surface preparation shall be in accordance with the manufacturer’s recommendations.

C. MECHANICAL EQUIPMENT:

1. Install insulation in accordance with the drawings and the manufacturer’s recommendations.

2. Install jacketing and fitting covers in accordance with the drawings and the manufacturer’s recommendations. Locate seams on underside of piping. Form aluminum caps to fit over the adjacent jacketing and to completely cover coated insulation ends. Secure caps in place with a jacket strap.

3. Install reusable fitting blankets on piping connections to equipment where access is required. Seal ends of pipe insulation.

3.03 TESTING (NOT USED)

3.04 TRAINING (NOT USED)

**END OF SECTION**

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