23-17_Addendum_3.pdf

(Addn. No. 3, Pg. 1)

ADDENDUM NO. 3

PROJECT TITLE: ABANDONED PIPES AND CONDUITS REMOVAL

LOCATION: SACRAMENTO RIVER

SPECIFICATION NO.: 23-17

CONTRACT NO.: C51654

ISSUED BY: STATE OF CALIFORNIA

DEPARTMENT OF WATER RESOURCES

DATE ISSUED: MARCH 26, 2024

The following changes are hereby made by this addendum:

1. New and revised specification page numbers: 00010-3, 00300-2, 00410-1, 00410-2, 01110-3, 01330-14, 02220-1, 02220-2, 02220-3, 02300-1, 02300-2, 02300-7, 02300-7a, 02300-10, 02925-1, 02925-2, 02925-4, 02925-11, 02925-13, 13280-1, 13280-2, 13280-3, 13280-4, 13280-5, 13280-6

BIDDER'S SIGNATURE

This addendum shall be signed below in the same manner as the bid is signed.

Bidder: ________________________________________________________

By (Authorized Officer): ___________________________________________

Business Address: _______________________________________________

Dated: ________________________, 20__.

THIS ADDENDUM COMPRISES 26 PAGES.

THIS COVER PAGE MUST BE SIGNED AND RETURNED WITH THE BID.

EXECUTION OF THIS ADDENDUM CONSTITUTES ACKNOWLEDGEMENT

OF THE PREVIOUS ADDENDUM.

Table of Contents

00010-3 G-22 (Addn. No. 3, Pg. 2)

DIVISION 2 – SITE CONSTRUCTION

02205 Mobilization and Demobilization 02206 Temporary Fencing 02220 Selective Demolition 02300 Earthwork 02371 Rockfill, Soil-Filled Rockfill, and Agricultural Soil for Soil-Filled

Rockfill 02650 Geotextile Fabric 02720 Aggregate Base Resurfacing 02925 Seeding 02935 Erosion Control Fabric

DIVISION 3 THROUGH 12 – NOT USED

DIVISION 13 – SPECIAL CONSTRUCTION

13280 Hazardous Substance Recovery and Disposal

DIVISION 14 THROUGH 16 – NOT USED

APPENDICES

APPENDIX I PRE-WORK SAFETY PLAN

APPENDIX II DEPARTMENT OF INDUSTRIAL RELATIONS (DIR)

REGISTRATION CERTIFICATION LIST

END OF DOCUMENT

Information Available

00300-2 G-22 (Addn. No. 3, Pg. 3)

(https://www.spk.usace.army.mil/Portals/12/documents/regulato ry/nwp/2021-nwps/NWP-Info-Sheets/2021-NWP-03.pdf). U.S.

Army Corps of Engineers.

e) River`s and Harbors Act, Section 10. Authorization issued by the Department of the Army (U.S. Army Corps of Engineers).

February 24, 2023. SPK-2022-00178.

f) Clean Water Act Section 401. Water Quality Certification issued by the Central Valley Regional Water Quality Control Board. July 28, 2022. WDID No. 5A34CR00848.

g) California Fish and Game Code Section 1602. Streambed Alteration Agreement issued by the California Department of Fish and Wildlife. April 28, 2023. No. EPIMS-SAC-28481-R3.

h) California Fish and Game Code Section 1602. Streambed Alteration Agreement issued by the California Department of Fish and Wildlife, Amendment 1. January 08, 2024. No.

EPIMS-SAC-28481-R3.

3) Past Geophysical Investigations Results.

4) Historical Documents:

a) Reclamation Board Permit Application No. 9635-A&B (1974), issued by the Central Valley Flood Protection Board.

4) Hood Abandoned Pipes and Conduits Removal Project Phase I Environmental Site Assessment, September 29, 2022.

5) Hood Abandoned Pipes and Conduits Removal Project Phase II Environmental Site Assessment, California Department of Water Resources Project Geology Report No. 94-00-95, May 5, 2023.

https://www.spk.usace.army.mil/Portals/12/documents/regulatory/nwp/2021-nwps/NWP-Info-Sheets/2021-NWP-03.pdf https://www.spk.usace.army.mil/Portals/12/documents/regulatory/nwp/2021-nwps/NWP-Info-Sheets/2021-NWP-03.pdf

Bid Schedule

*Section where contract item is defined 00410-1 G-22

(Addn. No. 3, Pg. 4)

DOCUMENT 00410

BID SCHEDULE

CONTRACT TITLE: Abandoned Pipes and Conduits Removal - Sacramento River

DWR SPECIFICATION NO.: 23-17

DWR CONTRACT NO.: C51654

BIDDER’S NAME:

(Name style as recorded on CA Contractor’s License)

Item No. Section* Item Estimated

Quantity Unit Unit Price (In Figures)

Total (In Figures)

1 01560 Temporary Traffic Controls 1 JOB LUMP SUM

2 01720 Construction Surveys 1 JOB LUMP SUM

3 02205 Mobilization and Demobilization 1 JOB LUMP SUM

4 02206 Temporary Fencing 175 LF

5 02220 Catwalk and Piles Demolition and Disposal 1 JOB LUMP SUM

6 02220 Concrete and Misc. Steel Demolition and Disposal 287 TON

7 02220 Pipe Demolition and Disposal 755 LF

8 02300 Excavation 2001 CY

9 02300 Levee Fill 2030 CY

10 02300 Agricultural Soil 25 TON

11 02371 Rockfill 84 TON

12 02371 Agricultural Soil for Soil- Filled Rockfill 12 TON

13 02650 Geotextile Fabric 98 SY

14 02720 Aggregate Base Resurfacing 167 TON

15 02925 Seeding 97 SY

Bid Schedule

*Section where contract item is defined 00410-2 G-22

(Addn. No. 3, Pg. 5)

Item No. Section* Item Estimated

Quantity Unit Unit Price (In Figures)

Total (In Figures)

16 02935 Erosion Control Fabric 98 SY

17 **** **** **** ****

TOTAL:

Summary of Work

01110-3 G-22 (Addn. No. 3, Pg. 6)

1.04 TIME OF COMPLETION

A. Pursuant to Document 00705 – Prosecution of Work, Paragraph 1.A, the Contractor shall begin work within

7 DAYS

from date of receipt of notice to begin work.

B. The Contractor shall complete all near-water and in-water work before the expiration of

October 31, 2024.

C. The Contractor shall complete the balance of work before the expiration of

December 31, 2024.

D. The above completion date is based on the Contractor receiving the notice to begin work within 40 days from the date of the bid opening.

The Department will extend the completion date by the number of days after the 40 days specified above that the Contractor receives the notice to begin work, except to the extent that the delay in issuance of the notice to begin work results from the failure of the Contractor to perform obligations specified in Document 00200 – Instructions to Bidders. Notwithstanding the provisions of Document 00705 – Prosecution of Work, Paragraph 6, the Contractor shall not be entitled to adjustment in compensation for such extension of the completion date.

1.05 LIQUIDATED DAMAGES

A. Pursuant to Document 00705 – Prosecution of Work, Paragraph 2:

1. Liquidated damages for failure to complete the work specified in Paragraph 1.04 C within the time period specified will be $3,000 per day.

1.06 PROSECUTION OF WORK

A. Pursuant to Document 00705 – Prosecution of Work, Paragraph 3.B, the time of completion specified in Paragraph 1.05 is considered insufficient to complete the project working a normal number of hours per day or week on a single-shift basis. It is expected that overtime operations and/or additional shifts will be necessary to achieve completion of work within the time specified. The contract prices shall

Submittals

(1) Number of days from receipt of Notice to Begin Work or time scheduled by Contractor in 01330, 1.04 C, Submittal Schedule.

01330-14 G-22 (Addn. No. 3, Pg. 7)

SUBMITTAL REGISTER

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01330, 1.04 C, No. of days(1), or as specified

02 02371 – ROCKFILL, SOIL-FILLED ROCKFILL, AND AGRICULTURAL SOIL FOR SOIL-FILLED ROCKFILL

02371 1.04 A.1 Supplier’s certification X Tests conducted within 6 months prior to the bid date

1.04 A.2 Source Information X 15

1.04 A.3 Gradation X 15

1.04 A.4 Specific Gravity X 15

1.04 A.5 Operational Capacity X 15

1.04 A.6 Borrow Source Agricultural Soil Test Results X 15

1.04 A.7 Transport, stockpile, and placement plan X 15

02650 – GEOTEXTILE FABRIC

02650 1.03 A.1 Geotextile Manufacture’s Data and Sample X X 15

1.03 A.2 Equipment X 5

02720 – AGGREGATE BASE RESURFACING

02720 1.04 A.1 Supplier’s Certification X 7

1.04 A.2 Source and Gradation X 7

1.04 A.3 Quarry’s Capacity and Dedication Certification X 7

1.04 A.4 Aggregate specific gravity X 7

1.04 A.5 Aggregate Quality Characteristics X 7

1.04 A.6 Aggregate Abrasion Characteristics X 7

02925 – SEEDING

02925 1.04 A.1 **** **** ****

1.04 A.2 Implementation Schedule and Placement Plan X

1.04 A.3 Equipment List X

1.04 A.4 Seeding Materials X X

1.04 A.5 Monthly Maintenance Log X 1st of every month

02935 – EROSION CONTROL FABRIC

02935 1.03 A.1 Erosion Control Fabric Manufacturer’s Data and Samples X X X 15

13 13280 – HAZARDOUS SUBSTANCE RECOVERY AND DISPOSAL

13280 1.04 A Hazardous Substance and Hazardous Waste Disposal Plan

X X 20

1.04 B Lab Results, Manifests, Certifications, and Other

Documentation

X X 30

Selective Demolition

02220-1 G-22 (Addn. No. 3, Pg. 8)

SECTION 02220

SELECTIVE DEMOLITION

PART 1 GENERAL

1.01 DESCRIPTION

A. This section covers the contract items Catwalk and Piles Demolition and Disposal, Concrete and Misc. Steel Demolition and Disposal, and Pipe Demolition and Disposal.

1. The contract item Catwalk and Piles Demolition and Disposal includes the removal and disposal of the catwalk, piles, attached above ground piping, utilities, and any tree trimming.

2. The contract item Concrete and Misc. Steel Demolition and Disposal includes removal and disposal of buried concrete, septic tank, and miscellaneous steel within the limits of work.

3. The contract item Pipe Demolition and Disposal includes the removal and disposal of buried piping **** within the limits work as identified on the Drawings.

1.02 RELATED SECTIONS

A. Supplementary General Conditions, General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract:

1. Section 01720 – Construction Layout (Surveys)

2. Section 02300 – Earthwork.

3. Section 13280 – Hazardous Substances Recovery and Disposal.

1.03 SUBMITTALS

A. The Contractor shall submit the following:

1. Cutting and Containment Plan:

a. Plans, methods, and equipment to be used for cutting and demolition operations.

b. Measures to control dust and noise.

02220-2 G-22 (Addn. No. 3, Pg. 9)

c. Measures to contain and dispose of hazardous and non-hazardous debris, respectively.

d. Locations intended for disposal of the demolition materials.

e. Approved copy of a Sacramento County Environmental Management Department septic tank destruction permit.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

3.01 GENERAL DEMOLITION

A. Demolished materials shall be managed in accordance with the Contractor’s Cutting and Containment Plan as defined in Paragraph

1.04 A.

B. Substances identified as hazardous shall be managed in accordance with the Contractor’s Hazardous Substances Disposal Plan as defined in Section 13280 – Hazardous Substance Recovery and Disposal.

C. Notify the Engineer at least 2 working days prior to the start of demolition operations.

D. Cutting:

1. Make cuts normal to exposed surface unless otherwise shown.

2. Make cut edges clean and sharp.

E. Removal:

1. Remove to the limits shown and directed.

2. Remove loose materials from surfaces.

3. Blasting will not be allowed.

3.02 CATWALK AND PILES DEMOLITION

A. Broken piles at or near the existing substrate that cannot be removed by other methods, shall be cut at least 1 foot below the surface/mudline at a minimum. Cutting shall be at the lowest practical tide condition and at slack water.

B. Location of all broken and cut piles shall be documented in the post-construction survey; see Section 01720 – Construction Layout (Surveys) for requirements.

02220-3 G-22 (Addn. No. 3, Pg. 10)

C. ****

D. Contractor shall coordinate with the Department for pruning of tree canopies required to complete construction activities. Pruning shall be done under the direction of a Certified Arborist

3.03 CONCRETE AND MISC. STEEL DEMOLITION

A. All buried concrete foundations, structures, and associated steel found during excavation are to be removed.

B. Septic tank inspection, demolition, removal and disposal shall follow Sacramento County Environmental Management Department procedures, notifications, permitting and fees. Contractor shall furnish the Department with copies of any required or necessary certificates, permits, and/or fee receipts for septic waste handling procedures.

3.04 PIPE DEMOLITION

A. All buried pipes shown in the drawings found during excavation are to be removed. ****

3.05 DISPOSAL

A. Materials, not directed to be salvaged, shall be removed from the site as the Contractor’s property.

PART 4 MEASUREMENT AND PAYMENT

4.01 MEASUREMENT

A. Measurement for payment for contract item Concrete and Misc. Steel Demolition and Disposal will be by the ton and will be the number of tons removed from within the limits of work.

B. Measurement for payment for contract item Pipe Demolition and Disposal will be by the linear foot and will be the number of linear feet removed from within the limits of work.

4.02 PAYMENT

A. The contract prices will be paid for CATWALK AND PILES

DEMOLITION AND DISPOSAL; CONCRETE AND MISC. STEEL

DEMOLITION AND DISPOSAL; and PIPE DEMOLITION AND DISPOSAL; which prices shall include full compensation for all costs incurred under this section.

END OF SECTION

Earthwork

02300-1 G-22 (Addn. No. 3, Pg. 11)

SECTION 02300

EARTHWORK

PART 3 GENERAL

3.04 DESCRIPTION

A. This section covers the contract items Excavation, Levee Fill, and Agricultural Soil.

1. The contract item Excavation includes:

a. Excavating the site to the lines and grades as shown on the Drawings, within the limits of work, excluding the limits of leach field.

b. Leveling, scarifying, and compacting excavation subgrades prior to placing initial lifts of Levee Fill.

c. Loading, transporting and disposing of excavated substances off site in accordance with applicable federal, State, and local requirements.

2. The contract item Levee Fill includes:

a. Importing suitable Levee Fill materials from Contractor-selected off-site borrow areas to the site.

b. Transporting, stockpiling, handling, placing, moisture conditioning, and compacting imported Levee Fill to the lines and grades shown on the Drawings.

3. The contract item Agricultural Soil includes:

a. Importing Agricultural Soil materials from Contractor-selected off-site borrow areas to the work site. Borrow/materials must be from permitted (or commercial) sources.

b. Transporting, stockpiling, handling, and placing Agricultural Soil (excluding Agricultural Soil for Soil-Filled Rockfill) to the lines and grades shown on the Drawings. Note that Agricultural Soil for Soil-Filled Rockfill is addressed in Section 02371 – Rockfill, Soil-Filled Rockfill, and Agricultural Soil for Soil-Filled Rockfill.

02300-2 G-22 (Addn. No. 3, Pg. 12)

3.05 RELATED SECTIONS

A. Supplementary General Conditions, General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract:

1. Section 02371 – Rockfill, Soil-Filled Rockfill, and Agricultural Soil for Soil-Filled Rockfill.

2. Section 02650 – Geotextile Fabric.

3. Section 13280 – Hazardous Substance Recovery and Disposal.

3.06 REFERENCES

A. The following publications form a part of this specification to the extent referenced. Application of these publications shall conform to Document 00702 – Interpretation of the Contract, Paragraph 2:

1. American Society for Testing and Materials (ASTM):

a. ASTM D 698 – Standard Test Method for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 feet-pound force per cubic feet).

b. ASTM D 1140 – Standard Test Method for Determining the Amount of Material Finer than Number 200 Sieve in Soils by Washing.

c. ASTM D 1556 – Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method.

d. ASTM D 1557 – Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort.

e. ASTM D 2216 – Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock. (Oven Drying Method).

f. ASTM D 2487 – Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System – USCS).

02300-7 G-22 (Addn. No. 3, Pg. 13)

g. Soil Boron Concentration (AB-DTPA Extractable): Less than 1 milligram per kilogram.

h. Soil Calcium-Magnesium Ratio: 0.35 to 11.0.

PART 3 EXECUTION

3.01 EXCAVATION

A. The Contractor shall provide dewatering for all excavations using ditching and sumping or other suitable means to provide an excavated surface suitable for the placement and compaction of overlying Levee Fill. Groundwater shall be maintained a minimum of 3 feet below the bottom of the excavation until the excavation is backfilled the surrounding grade. Management and release of water from dewatering shall be in accordance with environmental permits.

B. All excavated soil material shall comply with protective requirements specified in Section 13280 – Hazardous Substance Recovery and Disposal.

C. Dust mitigation measures, such as wetting, shall be utilized at least 24 hours before and during soil disturbance activities.

D. Workers shall be fitted with Level D personal protective equipment while soil disturbance activities are taking place.

E. All excavated material shall be immediately placed on plastic sheeting and stockpiled in lifts up to a 3-foot maximum height and no more than 250 cubic yards in size for testing required by disposal facilities. The stockpiles shall be stored in such a manner to prevent any dust from migrating from the site.

F. After test results are obtained, Contractor will allow opportunity for observation and cultural monitoring of excavated materials prior to placing additional lifts. Contractor shall allow Native American representative access to inspect all excavated materials.

G. All excavated material shall be legally disposed of offsite.

H. Subsurface concrete structures and foundation removal shall comply with requirements specified in Section 02220 – Selective Demolition.

02300-7a G-22 (Addn. No. 3, Pg. 14)

I. Excavating Beyond Established Lines: Necessary precautions shall be taken to preserve, in an undisturbed condition, material beyond the excavated limits shown on the plans, except for unsuitable material ordered to be removed. Material loosened beyond the excavation limits as a result of either natural processes or excavation operations shall be removed to expose firm unyielding soil as determined by the Engineer.

J. Areas of excavated area shall be tested to demonstrate that all debris has been adequately removed to background levels.

1. Confirmation sampling should be conducted by a licensed professional after the debris has been removed. Confirmation soil sampling results can be compared to the background cleanup goals using 5-point aliquots per 1,000 square feet for each sample. All confirmation samples should be collected from a depth of 0-3 inches using a dedicated 4-ounce plastic scoop and be placed in 8-ounce jars. Samples should be taken to an approved laboratory for analysis of Title 22 Metals.

3.02 PREPARATION

A. Foundation Preparation: Excavated surfaces equal to or flatter than 3H to 1V over or against which Levee Fill is to be placed shall be scarified to a depth of 6 inches, moisture conditioned, and compacted to not less than 95 percent compaction determined from ASTM D 698. Where a zone of unsuitable material is encountered that cannot be compacted to

02300-10 G-22 (Addn. No. 3, Pg. 15)

3.07 DISPOSAL OF EXCAVATED MATERIALS

A. Unless otherwise approved by the Engineer, all excavated material, including materials beyond the excavation limits or any imported material that is not compliant with the requirements of Paragraph 2.01, shall not be reused. Such material shall become the property of the Contractor and shall be removed from the site and legally disposed of in accordance with Section 13280 – Hazardous Substance Recovery and Disposal.

B. Excavated non-earth materials will be disposed of in accordance with Section 13280 – Hazardous Substance Recovery and Disposal.

C. The use of temporary stockpiles of soils shall not become sources of dust or soil run-off generation. Wind and water erosion measures shall be implemented when weather conditions may result in significant run-off.

PART 4 MEASUREMENT AND PAYMENT

4.01 MEASUREMENT

A. Measurement for payment for the contract item Excavation will be by the cubic yard measured in place before excavation regardless of the type and classification of the material and will be the number of cubic yards excavated for the work as confirmed by the post-excavation survey.

B. Measurement for payment for the contract item Levee Fill will be by the cubic yard and will be the number of cubic yards of suitable material measured in place after compaction as confirmed by survey of the completed work.

C. Measurement for payment for the contract item Agricultural Soil will be by the ton and will be the number of tons placed in the work.

4.02 PAYMENT

A. The contract prices will be paid for EXCAVATION; LEVEE FILL; and AGRICULTURAL SOIL; which prices shall include full compensation for all costs incurred under this section.

Seeding

02925-1 G-22 (Addn. No. 3, Pg. 16)

SECTION 02925

SEEDING

A. This section covers the contract item Seeding.

1. The contract item Seeding includes:

a. All labor, materials, water, tools and equipment necessary to seed, maintain, and monitor the seeded plants to prescribed establishment levels.

1.02 RELATED SECTIONS

A. Supplementary General Conditions, General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract:

1. Section 02935 – Erosion Control Fabric.

1.03 REFERENCES

A. The following publications form a part of this specification to the extent referenced. Application of these publications shall conform to Document 00702 – Interpretation of the contract, Paragraph 2:

1. Agricultural Marketing Service: AMS-01 (Amended through:

August 1988) Federal Seed Act Regulations (Part 201-202).

2. Association of Official Seed Analysts Seed Sampler’s References https://www.analyzeseeds.com/seed-samplers-references.

B. All plant names shall be true to botanical and common name and variety as indicated in the following:

1. Calflora online database, accessible at www.calflora.org.

1.04 SUBMITTALS

A. Landscaper’s Qualifications:

1. ****

02925-2 G-22 (Addn. No. 3, Pg. 17)

2. Implementation Schedule and Placement Plan:

a. Submit Implementation schedule and placement plan including sequence of material placement.

1) Include any areas impacted by construction that the Engineer determines require repair and re-seeding.

3. Equipment List:

a. Contractor shall provide a list of equipment that will be used under each task. A list of proposed site preparation, seeding, relocation, construction, and mulching equipment to be used in performance of seeding operation, including descriptive data and calibration tests.

4. Seeding Materials:

a. Submit seeding Materials: The Contractor shall submit a list of the materials proposed for seeding, including, but not limited to:

1) Inspection, inventory and receiving records of the condition of the seed at time of delivery.

02925-4 G-22 (Addn. No. 3, Pg. 18)

1.06 TIMES AND CONDITIONS

A. Seeding Times:

1. Seeding shall be performed beginning within 48 hours of scarifying the site. No variance to the start date will be allowed unless given in writing by the Engineer.

B. Seeding Conditions:

1. Seeding operations shall be performed only during periods when beneficial results can be obtained. When excessive moisture, winds, or other unsatisfactory conditions prevail, the work shall be stopped as directed by the Engineer.

a. If the seeding schedule requires seeding on days the temperature is expected to reach or exceed 90 degrees Fahrenheit, the Contractor shall schedule seeding in the morning hours.

2. When special conditions warrant a variance to the seeding operations, a proposed seeding schedule shall be submitted in writing to, and approved by, the Engineer. The Contractor shall be prepared to seed at the first available opportunity when all conditions (weather, moisture, temperature, etc.) are acceptable.

C. Construction Impacted Area Treatment:

1. Compacted areas in need of repair, as determined by the Engineer, shall be scarified, dressed and leveled with agricultural soil, to design slope and seeded only after they are no longer in use for construction or staging purposes and all construction equipment has left the zone of repair.

1.07 ****

02925-11 G-22 (Addn. No. 3, Pg. 19) degrees Fahrenheit, the remaining erosion control applications shall be applied within 3 hours of the endomycorrhizal inoculum application. The Contractor shall apply the endomycorrhizal inoculum as per the requirements for the method used.

2. The endomycorrhizal inoculum shall be applied at the rate of 60 pounds per acre (3,600,000 propagules per acre), based on the supplier’s certification or an analysis returned by an independent laboratory, in the same application as the seeds. In no case shall the endomycorrhizal inoculum be applied after the seeds.

3.04 EROSION CONTROL FABRIC

A. Where indicated on the Drawings, seeded areas shall have erosion control fabric installed within 48 hours after seeding operations. Steps 3 and 4 of the hydroseeding process (straw and tackifier) shall be omitted in areas where erosion control fabric is to be installed.

B. Erosion control fabric shall be applied to seeded areas upon completion and upon approval of the seeding application by the Engineer.

Application of erosion control fabric shall conform to Section 02935 – Erosion Control Fabric.

3.05 ****

3.06 CLEANUP

A. Excess and waste material from the seeded and staging areas shall be removed and disposed of off the site as Contractor’s property. The Contractor shall obtain permits required for such disposal.

02925-13 G-22 (Addn. No. 3, Pg. 20)

f. Seeding operation shall be inspected during equipment calibration, material loading and seed application.

3. ****

4. ****

5. ****

6. The Engineer may inspect work without notification at any time.

During an inspection, the Engineer reserves the right to take and analyze samples of any and all materials for conformity to the specifications. Seed samples shall be drawn in accordance with procedures outlined in the Association of Official Seed Analysts Seed Sampler’s References (https://www.analyzeseeds.com/seed-samplers-references/).

7. Rejected Materials: The Contractor is responsible for the removal of all materials rejected by the Engineer. The Contractor shall immediately remove rejected material from the site as the Contractor’s property and replace with material that meets specification.

Hazardous Substance Recovery and Disposal

13280-1 G-22 (Addn. No. 3, Pg. 21)

SECTION 13280

HAZARDOUS SUBSTANCE RECOVERY AND DISPOSAL

A. This section covers the contract items Contaminated Soil Recovery and Disposal and Contaminated Pipes Recovery and Disposal.

1. The contract item Contaminated Pipes Recovery and Disposal includes:

a. Removal of subsurface piping located within the limits of leach field.

b. Disposal of potentially hazardous material in accordance with applicable federal, state, and local requirements.

1.02 RELATED SECTIONS

A. Supplementary General Conditions, General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract:

1. Section 02220 – Selective Demolition.

1.03 REFERENCES

A. The following publications form a part of this specification to the extent referenced. Application of these publications shall conform to Document 00702 – Interpretation of the Contract, Paragraph 2:

1. California Code of Regulations:

a. Title 8, Section 1532.1 – Construction Safety Orders, Lead.

b. Title 22, Division 4.5 – Environmental Health Standards for the Management of Hazardous Waste.

2. California Hazardous Waste Control Act, Health and Safety Code, Division 20, Chapter 6.5.

3. Porter-Cologne Water Quality Control Act, California Water Code, Division 7.

4. DWR Phase I Environmental Site Assessment Report, September 29, 2022.

5. DWR Phase II Environmental Site Assessment Report, May 5, 2023.

13280-2 G-22 (Addn. No. 3, Pg. 22)

1.04 SUBMITTALS

A. Hazardous Substance and Hazardous Waste Disposal Plan:

1. A work plan detailing hazardous waste and hazardous substance removal activities, recovery and disposal operations, and measures to be undertaken to prevent the release of any hazardous substances during work. The work plan shall be prepared by a Certified Industrial Hygienist (CIH). The work plan shall identify materials, equipment, and methods to be used and include working drawings of the containment system(s) to be utilized. The Contractor shall verify the presence of lead and other hazardous substances. If the presence of such substances is confirmed, the Contractor shall develop abatement/removal and disposal plans accordingly. The plan shall comply with any requirements in the DWR Phase II report.

2. The plan should include dermal and respiratory protection until the Contractor demonstrates that the engineering controls are to the satisfaction of the CIH.

3. Name, telephone number and EPA Identification Number of the permitted treatment/storage/disposal facility and name and telephone number of a representative authorized to accept the hazardous substances and hazardous waste to be removed from the site.

4. A Hazardous Waste/Hazardous Substances Transportation Plan.

This plan shall include the following:

a. Name, telephone number, California Hazardous Waste

Transporter registration number, and EPA Identification Number of the licensed hazardous waste transporter and name and telephone number of a representative of the transporting agent(s) that will transport the hazardous substances and hazardous waste to the permitted disposal facility.

b. A list and description of the vehicles to be used, with current inspection/certification information.

c. A detailed procedure for loading/unloading of hazardous waste transport vehicles, including security for overnight transport and transport routes from work site to the disposal facility.

d. A Community Health and Safety Plan. This plan provides details as to how the transporter will respond to an emergency and protect the health and safety of the residential neighborhoods that the hazardous waste transport vehicle travels through.

e. Work Site Health and Safety Plan. This plan provides a procedure for personnel and visitor safety, protection and

13280-3 G-22 (Addn. No. 3, Pg. 23)

f. monitoring, including procedures to be followed in the event of exposure to hazardous substances.

g. Copies of the above program and plans shall be maintained at the site throughout the demolition work period.

B. Lab Results, Manifests, Certifications, and Other Documentation:

1. Copies of all hazardous waste manifests, nonhazardous waste manifests, laboratory analytical results, Chain of Custody forms, bills of lading, and other documents associated with the assessment, analysis, agency notification, abatement, transportation, and disposal of hazardous substances. Copies of current training and certification documents of personnel performing hazardous substance abatement/removal and oversight.

PART 2 PRODUCTS

2.01 SERVICES

A. During recovery operations and disposal from the site, the Contractor shall employ the services of a Certified Industrial Hygienist (CIH).

B. The CIH shall be experienced in the comprehensive practice of industrial hygiene with specialized experience in removal and recovery of the hazardous substances identified and shall be certified by the American Board of Industrial Hygiene Incorporated.

C. The CIH shall have direct supervision for hazardous material removal and recovery operations.

D. The Contractor shall implement approved practices and procedures, and general requirements for lead abatement or removal, according to applicable laws, rules and regulations of federal, State and local governmental agencies, including but not limited to the following:

1. Abatement Procedure Plans.

2. Emergency Precautions and Procedures.

3. Worker Protection Procedures.

4. Work Area Preparation and Coordination.

5. Inspection and Coordination.

6. Work Requiring Containment.

7. Work Not Requiring Containment.

13280-4 G-22 (Addn. No. 3, Pg. 24)

8. Sampling, Monitoring and Clearance.

9. Transportation and Disposal.

PART 3 EXECUTION

3.01 GENERAL

A. Demolition and demolished materials shall be managed in accordance with the Contractor’s Cutting and Containment Plan as defined in Section 02220 – Selective Demolition.

B. Waste identified as hazardous shall be managed in accordance with the DWR Phase II report and the Contractor’s Hazardous Waste Disposal Plan as defined in Paragraph 1.04 A.1.

C. Waste identified as nonhazardous shall be managed in accordance with the Contractor’s Construction Waste Management Plan.

3.02 WORK SITE PREPARATION

A. The Contractor shall make necessary containment and provide a safe working environment during the work.

B. Dust mitigation measures, such as wetting, shall be utilized at least 24 hours before and during soil disturbance activities.

C. Workers shall be fitted with Level D personal protective equipment while soil disturbance activities are taking place.

3.03 REMOVAL AND DISPOSAL OF HAZARDOUS WASTE AND HAZARDOUS

SUBSTANCES

A. Disposal shall be performed in accordance with all applicable federal, State, and local hazardous waste and hazardous substances laws and regulations. Laws and regulations which govern this work include, but are not limited to:

1. California Health and Safety Code, Division 29, Chapter 6.5 (California Hazardous Waste Control Act).

2. Title 22; California Code of Regulations, Division 4.5 (Environmental Health Standards for the Management of Hazardous Waste).

3. Title 8, California Code of Regulations, Section 1532.1 of the Construction Safety Orders.

4. Title 8, California Code of Regulations, Section 1529 of the Construction Safety Orders.

5. California Waster Code, Division 7 (Porter-Cologne Act).

B. Hazardous materials shall be disposed of under CIH supervision in conformance with Paragraph 2.01, Services. These materials shall be

13280-5 G-22 (Addn. No. 3, Pg. 25) disposed of by the Contractor at an approved and appropriately permitted disposal facility in accordance with the requirements of the site operator. All hazardous substances and wastes should be recycled to the greatest extent practical, with nonrecyclable hazardous waste disposed of at a Class I facility. Nonhazardous wastes shall be disposed of at an appropriately permitted Class II or Class III facility. A hazardous waste transporter currently registered with the California Department of Toxic Substances Control, using correct manifesting procedures and vehicles displaying current certification of compliance, shall haul surface preparation debris and other generated wastes determined to be hazardous wastes; nonhazardous wastes shall be transported pursuant to all federal, State, and local requirements applicable to the waste stream. The Contractor shall make all arrangements with the operator of the disposal facility and perform any testing of the surface preparation debris, and other wastes, required by the operator.

3.04 DISPOSAL OF HAZARDOUS SUBSTANCES

A. Hazardous materials in the site shall be recovered and disposed of in accordance with the Contractor’s Hazardous Waste Disposal Plan as defined in Paragraph 1.04 A.1.

B. Excavated soil shall be immediately placed on plastic sheeting and piled into stockpiles of 250 cubic yards each, for the purpose of waste profiling. Waste disposal facilities require four-point composite samples to be collected from each stockpile before waste acceptance. Specific analytical testing requirements vary by waste facility and shall be confirmed by the Contractor prior to testing. The stockpiles shall be stored in such a manner to prevent any dust from migrating from the site.

C. Prior to disposal, all potentially hazardous substances shall be characterized. Only wastes determined to meet the criteria of a hazardous waste per Title 22 California Code of Regulations Chapter 11 shall be recycled or disposed of at a permitted Class I facility. The testing shall be conducted by analytical laboratories accredited by the California Department of Public Health. All wastes not meeting the criteria for hazardous waste shall be recycled or disposed of at an appropriately permitted Class II or Class III facility.

3.05 PUBLIC SAFETY

A. The Contractor shall provide temporary removable barricades or other temporary measures to prevent unauthorized public access to the work site.

13280-6 G-22 (Addn. No. 3, Pg. 26)

B. Adequate barriers shall be established to prevent pedestrians entering an active construction area. Warning signs shall be posted at sufficient distances from the work area to alert pedestrians and vehicles.

C. The site shall be kept secure from the public during construction activities.

PART 4 ****