11B0023-SPECS-AM20.PDF

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment your desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION

NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended, is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO.

IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

W912BU

Channel Modification, Lower Reach, Little Mill Creek Flood Risk Management Project, New Castle County, DE

THIS AMENDMENT DOES NOT EXTEND THE 24 SEPTEMBER 2013 BID OPENING DATE AT 11:00 A.M.

E5CTCSGF

US ARMY ENGINEER DISTRICT, PHILADELPHIA

WANAMAKER BUILDING, 100 PENN SQUARE EAST

PHILADELPHIA, PENNSYLVANIA 19107-3390

US ARMY ENGINEER DISTRICT, PHILADELPHIA

POC: SANDI FLETCHER

WANAMAKER BUILDING, 100 PENN SQUARE EAST

PHILADELPHIA, PENNSYLVANIA 19107-3390

W912BU-11-B-0023

09/19/2013

09/27/2011

This page was intentionally left blank for duplex printing.

Amendment No. 0020

IFB W912BU-11-B-0023

14. DESCRIPTION OF AMENDMENT (continued)

a. TECHNICAL SPECIFICATIONS:

(1) Section 00 10 00 – BIDDING SCHEDULE: Please delete page 00 10 00-3 in its entirety and substitute revised page 00 10 00-3, annotated Amendment No.

0020, attached hereto.

(2) Section 02 61 13 – HANDLING OF CONTAMINATED MATERIAL: Please delete section 02 61 13 in its entirety and substitute revised section 02 61 13, annotated Amendment No. 0020, attached hereto.

b. Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment No. 0020. Failure to acknowledge all amendments may be cause for rejection of the bid.

00 10 00-3

BIDDING SCHEDULE

(To be attached to SF 1442)

Item Estimated Unit Estimated No. Description Quantity Unit Price Amount

1. Soil Erosion and Sediment Control 1 JOB LS $

2. Water Diversion and Dewatering 1 JOB LS $

3. Material Disposal

a. Soils 1 30,446 CY $ $

b. Soils 2 724 CY $ $

c. Soils 3 200 CY $ $

d. Water 1 JOB LS $

e. Solids 1 1,200 CY $ $

f. Solids 2 900 CY $ $

g. Solids 3 400 CY $ $

h. Solids 4 200 CY $ $

4. Clearing and Grubbing 5.1 AC $ $

5. Structures Monitoring 1 JOB LS $

6. Excavation 31,400 CY $ $

7. Backfilling 1,200 CY $ $

8. Riprap 9,117 TON $ $

9. Imported Topsoil 140 CY $ $

10. Seed and Mulch 1 JOB LS $

11. Deleted

12. Erosion Control Mat 11,100 SY $ $

13. Tree and Shrub Plantings 1 JOB LS $

14. Disposal Haul Road 1 JOB LS $

15. Bioretention Basin Relocation 1 JOB LS $

16. Sanitary Sewer 1 JOB LS $

17. Storm Sewer 1 JOB LS $

18. Fencing 1 JOB LS $

TOTAL ESTIMATED BID AMOUNT $_________

NOTE: Bidders must bid on all items.

SECTION 02 61 13

HANDLING OF CONTAMINATED MATERIAL

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D4397 (2010) Standard Specification for Polyethylene Sheeting for Construction, Industrial, and Agricultural Applications

ASTM D5434 (2012) Field Logging of Subsurface Explorations of Soil and Rock

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2008; Errata 1-2010; Changes 1-3 2010;

Changes 4-6 2011; Change 7 2012) Safety and Health Requirements Manual

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA 530/F-93/004 (1993; Rev O; Updates I, II, IIA, IIB, and III) Test Methods for Evaluating Solid Waste (Vol IA, IB, IC, and II) (SW-846)

EPA 560/5-86-017 (1986) Field Manual for Grid Sampling of PCB Spill Sites to Verify Cleanup

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1926 Safety and Health Regulations for Construction

40 CFR 302 Designation, Reportable Quantities, and Notification

29 CFR 1910.1000 Air Contaminants

29 CFR 1910.120 Hazardous Waste Operations and Emergency Response

29 CFR 1910.145 Accident Prevention Signs and Tags

40 CFR 761 Polychlorinated Biphenyls (PCBs) Manufacturing, Processing, Distribution in Commerce, and Use Prohibitions

40 CFR 761.75 Chemical Waste Landfills

Section 02 61 13 Page 1

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA 530/F-93/004 (1993; Rev O; Updates I, II, IIA, IIB, and III) Test Methods for Evaluating Solid Waste (Vol IA, IB, IC, and II) (SW-846)

EPA 560/5-86-017 (1986) Field Manual for Grid Sampling of PCB Spill Sites to Verify Cleanup

DELAWARE DEPARTMENT NATURAL RESOURCES AND ENVIRONMENTAL COUNCIL

(DNREC)

Administrative Code Title 7 (Current) Delaware Solid and Hazardous Waste Regulations

Administrative Code Title 1 (Current) Delaware Solid and Hazardous Waste Regulations

1.2 DESCRIPTION OF WORK

The work consists of excavation and temporary storage of approximately 924 cubic yards of polyaromatic hydrocarbons (PAHs) and/or polychlorinated Biphenyls (PCBs) potentially contaminated material. Approximate locations of contaminated material are shown on the drawings. Characterization data on the nature and extent of the contaminated material is attached herein.

Boring logs obtained within the project limits area attached herein. .

Submit a Work Plan as specified below. Notify the Contracting Officer within 24 hours, and before excavation, if contaminated material is discovered that has not been previously identified or if other discrepancies between data provided and actual field conditions are discovered. Required sampling and chemical analysis shall be conducted in accordance with the applicable state and federal regulations governing handling and disposal of PAHs and PCBs contaminated material

Perform work in accordance with 40 CFR 761, 29 CFR 1910.120, and the requirements specified herein. Excavate to the horizontal and vertical limits of the identified channel section as indicated. Following excavation of the channel section, if through best management practices, any visually identified suspect soils are identified as potentially being contaminated, the Contractor shall immediately contact the CO. The Contractor shall sample the suspect soils using the Immuno Assay kits.

Provide the results of the tests to the CO for review. The CO shall direct the Contractor to remove and stockpile suspect soils for further characterization or to continue construction activities.

1.2.1 Existing Conditions

PCB sediment contaminant levels range from "not detected" to 18 ppm.

1.2.2 Scheduling

Notify the Contracting Officer 14 calendar days prior to the start of excavation of contaminated material. The Contracting Officer will be responsible for contacting regulatory agencies in accordance with the applicable reporting requirements.

Section 02 61 13 Page 2

1.2.3 Work Plan

Submit a Work Plan within 30calendar days after notice to proceed. No work at the site, with the exception of site inspections and surveys, shall be performed until the Work Plan is approved. Allow 14 calendar days in the schedule for the Government's review. No adjustment for time or money will be made if resubmittals of the Work Plan are required due to deficiencies in the plan. At a minimum, the Work Plan shall include:

a. Schedule of activities.

b. Method of excavation and equipment to be used.

c. Shoring or side-wall slopes proposed.

d. Dewatering plan.

e. Storage methods and locations for liquid and solid contaminated material.

f. Borrow sources and haul routes.

g. Decontamination procedures.

h. Spill contingency plan.

1.2.4 Other Submittal Requirements

Submit separate cross-sections of each area before and after excavation and after backfilling, test results, and 6 copies of the Closure Report within 14 calendar days of work completion at the site.

QUALITY ASSURANCE

1.3 Training

Instruct employees on the dangers of PCB exposure, on respirator use, decontamination, and applicable OSHA and EPA regulations.

1.4 Certified Industrial Hygienist (CIH)

Obtain the services of an industrial hygienist certified by the American Board of Industrial Hygiene to certify training, and review and approve the PCB removal plan, including determination of the need for personnel protective equipment (PPE) in performing PCB removal work.

1.5 Regulation Documents

Maintain at the job site one readily available copy each of 29 CFR 1910.1000, 40 CFR 761, and all contractor prepared plans required under "Submittals" paragraphs.

1.6 Protection Plan

Prepare and submit a protection plan, prepared by the CIH, covering protection of workers and the environment from PCB hazards. Specific protection requirements shall be determined by the CIH and, as a minimum, as specified herein.

Section 02 61 13 Page 3

1.7 PCB Contaminated Soil Removal Plan

Prepare and submit, 15 calendar days prior to initiating work, plan describing methods, techniques, and phases of dealing with the contaminated soil/sediment, including: a schedule to be employed in the excavation, a sequence of operations, the method of excavation, hauling, and handling of the contaminated materials, and the proposed equipment. If necessary to complete contract work, define the source for fill and method for importing the fill material. Ensure that work operations or processes involving PCB-contaminated materials are conducted in accordance with 40 CFR 761 and the applicable requirements of this section, including but not limited to:

a. Obtaining advance approval of PCB storage sites.

b. Notifying Contracting Officer prior to commencing the operation.

c. Notifying Contracting Officer when results of soil testing indicate greater than 50 ppm.

d. Reporting leaks and spills to the Contracting Officer.

e. Cleaning up spills.

f. Maintaining an access log of employees working in a PCB control area and providing a copy to the Contracting Officer upon completion of the operation.

g. Inspecting PCB and PCB-contaminated items, roll-offs, dump trucks and waste containers for leaks and forwarding copies of inspection reports to the Contracting Officer.

h. Maintaining a spill kit.

i. Maintaining inspection, inventory, and spill records.

1.8 PCB Contaminated Water Handling Plan

Prepare and submit plan detailing methods and techniques for collection and treatment of PCB contaminated water. For treatment system, include size and location of equipment, catalog data on all components of system, size and arrangement of filters, type and quantity of filtering material, and method of containment.

1.9 Sampling and Testing Plan

Prepare and submit sampling and testing plan. Include the names of ELAP certified testing laboratories to be used to accomplish analysis of contaminated soil/sediments and water. Describe field and laboratory sampling procedures, testing methods, and quality control procedures. For sample reports, show sample identification for location, date, time, sample method, contamination level, name of individual sampler, identification of laboratory, and quality control procedures. Perform polyaromatic hydrocarbon (PAH) and PCB sampling within 24 hours of placement of excavated material in roll-offs.

1.10 Training Certification

Submit certificates signed and dated by the CIH and by each employee stating that the employee has received OSHA mandated training training and

Section 02 61 13 Page 4 training in the us of the Immuno Assay kits.

1.11 CIH Qualifications

Submit the name, address, and telephone number of the industrial hygienist selected to perform the duties in paragraph entitled "Certified Industrial Hygienist." Submit proper documentation that the industrial hygienist is certified, including certification number and date of certification and recertification.

1.12 PCB Disposal Plan

Submit a PCB soil/sediment Disposal Plan within 45 calendar days after award of contract for Contracting Officer's approval. Comply with applicable requirements of Federal, DNREC Administrative Code Title 7 and Administrative Code Title 1, and local PCB waste regulations and address:

a. Identification of PCB wastes associated with the work.

b. Estimated quantities of wastes to be generated and disposed of to each disposal location.

c. Names and qualifications of each Contractor that will be transporting, storing, treating, and disposing of the wastes. Include the facility location and a 24-hour points of contact. Furnish two copies of EPA and, State PCB waste permits and EPA identification numbers.

d. Names and qualifications (experience and training) of personnel who will be working on-site with PCB wastes.

e. List of waste handling equipment to be used in performing the work, to include cleaning, volume reduction, and transport equipment.

f. Spill prevention, containment, and cleanup contingency measures to be implemented.

g. Work plan and schedule for PCB waste containment, removal, and disposal. Clean up and containerize wastes daily.

1.13 Closeout Report

Prepare closeout report containing following items: test results including readings and locations, a diagram of the limits of the excavated area with sample locations indicated (indicate reference benchmark used), chain of custody forms, certificates of disposal, truck manifests, and description of the work completed.

1.14 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Surveys; G, DO

Section 02 61 13 Page 5

SD-03 Product Data

Work Plan; G, DO Closure Report; G, DO Field Screening Test

SD-06 Test Reports

Surveys; G, DO Confirmation Sampling and Analysis; G, DO Sampling of Stored Material; G, DO Sampling Liquid; G, DO Protection Plan; G, DO PCB Contaminated Soil Removal Plan; G, DO PCB Contaminated Water Handling Plan; G, DO Sampling and Testing Plan; G, DO Confirmatory Grid Sampling Plan; G, DO Training certification CIH qualifications; G, DO PCB Disposal Plan; G, DO Shipping documentation Vehicle decontamination verification Borrow site testing Certificate of Disposal

SD-11 Closeout Submittals

Closeout Report; G, DO

1.15 REGULATORY REQUIREMENTS

1.15.1 Permits and Licenses

Obtain required federal, state, and local permits for excavation and storage of contaminated material. Permits shall be obtained at no additional cost to the Government.

1.15.2 Air Emissions

Air emissions shall be monitored and controlled in accordance with Section

01 57 20 ENVIRONMENTAL PROTECTION.

1.16 CHEMICAL DATA CONTROL

Field screening of waste soil/sediment shall be performed for PAHs and PCBs using Immuno Assay Kits. See Table 1. Waste Stream Characterization for frequency and action levels, attached herein.

Process liquid samples shall be collected pre- and post-carbon vessel wastewater treatment and submitted to a laboratory for total PCB analysis method to determine the effectiveness of the wastewater treatment. See Waste Stream Characterization Table for frequency of sampling. Provide proper sample method to measure PCBs with detection levels of 1 ppm total PCB or less.

Prepare a fifty-foot sample grid at the staging area located on parcel 400 Meco Lane. Obtain samples at the grid stations for full range PCBs and PAHS at a six inch depth (grab samples). Sampling will occur prior to and after material handling activities.

Section 02 61 13 Page 6

Document waste characterization sampling and shipping manifests for all material disposed off-site. See Waste Stream Characterization Table for frequency of sampling.

1.16.1 Granular Activated Carbon

Design and Provide a filter system using granular activated carbon to treat water drained and collected from the excavated soil/sediment and truck washing operations. The system shall be designed to reduce PCBs in the water to less than 1 ppb. Contractor shall assume that water from the sediments/soil will have a high particulate concentration and some settling/pre-filtering will be required prior to the granular activated carbon liquid filtering vessel. If less than 1 ppb cannot be obtained, water shall shall be shipped and disposed as waste.

PART 2 PRODUCTS

2.1 SPILL RESPONSE MATERIALS

Provide appropriate spill response materials including, but not limited to the following: containers, adsorbents, shovels, and personal protective equipment. Spill response materials shall be available at all times when contaminated materials/wastes are being handled or transported. Spill response materials shall be compatible with the type of materials and contaminants being handled.

2.2 FIELD SCREENING TEST

Immuno Assay PAHs and PCBs field test kits capable of detecting PAHs and PCBs to at least 1 ppm, with less than 5 percent false negatives, and providing on site results within 2 hours of taking sample. Provide catalog information on field test kit to be used. Include training in the proper use of the kit during the training session required Paragraph "Training Certification".

PART 3 EXECUTION

3.1 PROTECTION OF WORKERS AND THE ENVIRONMENT

Protect workers and the environment from PCB hazards in accordance with the PCB protection plan and, as a minimum, as specified herein.

3.2 Worker Safety

Provide portable decontamination and shower rooms. Workers shall wear and use PPE, as recommended by the industrial hygienist, upon entering a PCB control area. If PPE is not required by the CIH, specify in the PCB removal work plan. Keep work footwear inside work area until completion of the job. Have available one set of PPE required for use by Contracting Officer for inspection of work. Do not carry out PCB handling operations in confined spaces. Do not delay aid to a seriously injured worker for reasons of decontamination.

3.3 PCB Control Area

Establish a PCB control area to prevent unauthorized entry of personnel.

Rope off area and provide 29 CFR 1910.145 signs at approaches and around perimeter. Locate signs at such a distance that personnel may read the

Section 02 61 13 Page 7 sign and take the necessary precautions before entering the area. Allow only personnel briefed on the elements and trained as specified herein into the area. Do not permit food, drink, or smoking materials in the control area. Smoking is not permitted within 50 feet of the PCB control area.

Provide "Smoking Area" signs in one designated smoking area outside of the PCB control area as shown..

3.4 Air Quality

Include provisions to ensure that airborne PCB concentrations below the PEL of air defined herein are not exceeded outside of the PCB control area or by workers inside the PCB control area. Provide air monitoring, personnel monitoring, and sampling as necessary to ensure workers safety as determined by the CIH and as specified herein. As a minimum, sample the air daily at the following locations: at locations being disturbed, within the breathing zone of workers, and at the downwind border of the control area. Measure using instrument capable of detecting airborne PCBs at concentrations below OSHA PEL, or use a direct reading total particulate meter correlated to a worst case amount of PCBs attached to the particulate. When airborne concentrations exceed PEL at the breathing zone of workers, provide respirators and additional worker protection as dictated in the Site Health and Safety Plan. If airborne concentration exceeds PEL at boundary of control area, immediately stop work and notify the Contracting Officer. The analysis shall be done by an American Industrial Hygiene Assoc (AIHA) Certified Laboratory.

3.5 Dust Control

Maintain strict dust control at all times to prevent dust particles with PCB attached from becoming airborne. Sprinkle or treat the soil/sediments at the site and other areas disturbed by operations with dust suppressants or water.

3.6 SURVEYS

Surveys shall be performed immediately prior to and after excavation of contaminated material to determine the volume of contaminated material removed. Surveys shall also be performed immediately after backfill of each excavation. Provide cross-sections on 25 foot intervals and at break points for all excavated areas.

3.7 EXISTING STRUCTURES AND UTILITIES

No excavation shall be performed until site utilities have been field located. Take the necessary precautions to ensure no damage occurs to existing structures and utilities. Damage to existing structures and utilities resulting from the Contractor's operations shall be repaired at no additional cost to the Government. Utilities encountered that were not previously shown or otherwise located shall not be disturbed without approval from the Contracting Officer.

3.8 CLEARING

Clearing shall be performed to the limits shown on the drawings in accordance with Section 31 11 00 CLEARING AND GRUBBING.

Section 02 61 13 Page 8

3.9 CONTAMINATED MATERIAL REMOVAL

3.9.1 Excavation

Notify the Contracting Officer at least 48 hours prior to the start of excavation of contaminated soils/sediments. Use methods and equipment that result in minimal disturbance to remaining soil/sediments beyond the excavation limits. Remove and dispose of any material that becomes contaminated as a result of the Contractor's operation at no additional cost to the Government. Stage operations to minimize the time the contaminated soil is exposed to the weather. Provide protection measures around the area of contaminated soils/sediments to divert runoff of water from within the excavation boundaries.

Areas of contamination shall be excavated to the depth and extent shown on the drawings and not more than 0.2 ft beyond the depth and extent shown on the drawings unless directed by the Contracting Officer. Excavation shall be performed in a manner that will limit spills and the potential for contaminated material to be mixed with uncontaminated material. An excavation log describing visible signs of contamination encountered shall be maintained for each area of excavation. Excavation logs shall be prepared in accordance with ASTM D5434.

3.9.2 Washdown of Solid Material

Remove asphalt pavement, concrete slabs, structures and other non-soil/vegetation materials encountered above or below the ground surface within the excavation limits. Brush to remove soil/sediments materials.

If necessary and debris is visually saturated with oily substance, clean to limit defined herein for PCB surface contaminated solids by double rinsing, and place in the adjacent rubble pile. Collect and dispose of washdown water as contaminated water. Sample each type of solid material using either wipe samples or destructive samples at locations as directed by the Contracting Officer. Analyze samples for PCBs in accordance with EPA 530/F-93/004, Method 8080. Collect and test field blanks and replicates in accordance with EPA protocol. Repeat cleaning process and testing until PCBs are below the limits specified herein.

3.9.3 Shoring

If workers must enter the excavation, it shall be evaluated, shored, sloped or braced as required by EM 385-1-1 and 29 CFR 1926 section 650.

3.9.4 Dewatering

Surface water shall be diverted to prevent entry into the excavation.

Dewatering shall be limited to that necessary to assure adequate access, a safe excavation, prevent the spread of contamination, and to ensure that compaction requirements can be met.

3.10 CONTAMINATED MATERIAL STORAGE

Material shall be placed in temporary storage immediately after excavation while awaiting test results. The following paragraphs describe acceptable methods of material storage. Storage units shall be in good condition and constructed of materials that are compatible with the material or liquid to be stored. If multiple storage units are required, each unit shall be clearly labeled with an identification number and a written log shall be kept to track the source of contaminated material in each temporary storage

Section 02 61 13 Page 9 unit.

3.10.1 Stockpiles

Stockpiles shall be constructed to isolate stored contaminated material from the environment. The maximum stockpile size shall be 1000 cubic yards.

Stockpiles shall be constructed to include:

a. A chemically resistant geomembrane liner, or approved alternative, free of holes and other damage. Non-reinforced geomembrane liners shall have a minimum thickness of 20 mils. Scrim reinforced geomembrane liners shall have a minimum weight of 40 lbs/1000 square feet. The ground surface on which the geomembrane is to be placed shall be free of rocks greater than 0.5 inches in diameter and any other object which could damage the membrane.

b. Geomembrane cover free of holes or other damage to prevent precipitation from entering the stockpile. Non-reinforced geomembrane covers shall have a minimum thickness of 10 mils. Scrim reinforced geomembrane covers shall have a minimum weight of 26 lbs/1000 square feet. The cover material shall be extended over the berms and anchored or ballasted to prevent it from being removed or damaged by wind.

c. Berms surrounding the stockpile, a minimum of 12 inches in height.

Vehicle access points shall also be bermed.

d. The liner system shall be sloped to allow collection of leachate.

Storage and removal of liquid which collects in the stockpile, in accordance with paragraph Liquid Storage.

3.10.2 Roll-Off Units

Roll-off units used to temporarily store contaminated material shall be water tight. A cover shall be placed over the units to prevent precipitation from contacting the stored material. The units shall be located in the staging area located on Parcel 400 Meco Lane. Liquid which collects inside the units shall be removed and stored in accordance with paragraph Liquid Storage. If a lined roll-off unit is to be used, liner shall be in accordance with ASTM D4397 with a minimum roll-off liner thickness of 6 mil.

3.10.3 Liquid Storage

Liquid collected from excavations and stockpiles shall stored and treated prior to discharging into Little Mill Creek. Liquid storage containers shall be water-tight.

3.11 TRANSPORTATION AND DISPOSAL

Furnish labor, materials, and equipment necessary to store, transport, and dispose of PCB contaminated material in accordance with Federal, DNREC Administrative Code Title 7 and Administrative Code Title 1, and local requirements. Prepare and maintain waste shipment records and manifests required by the Resource Conservation and Recovery Act (RCRA), U.S. Federal Department of Transportation (DOT), and State transportation department.

All construction materials, waste, or debris associated with this activity shall be properly disposed of and contained at all times to prevent its entry into waters or wetlands. Construction materials shall not be

Section 02 61 13 Page 10 stockpiled in subaqueous lands or wetlands. All material excavated from the channel bottom and streams shall be transported in watertight trucks.

3.11.1 Shipping Documentation

40 CFR 761. Before transporting the PCB waste, sign and date the manifest acknowledging acceptance of the PCB waste from the Government. Return a signed copy to the Government before leaving the job site. Ensure that the manifest accompanies the PCB waste at all times. Submit transporter certification of notification to EPA of their PCB waste activities and EPA identification numbers. Within 35 days from shipment date, the transporter shall provide a copy of the manifest signed and dated by the disposer.

3.11.2 Payment Upon Furnishing Certificate of Disposal of PCBs

Payment will not be made until the certificate of disposal has been furnished to the Contracting Officer.

3.11.3 Disposal

If 500 ppm TSCA threshold is exceeded, dispose of PCB contaminated soils in accordance with 40 CFR 761 at a TSCA regulated landfill meeting the requirements of 40 CFR 761.75. The disposer shall forward a copy of the manifests to the Contracting Officer within 30 days of receipt of PCBs.

3.11.3.1 Certificate of Disposal

Submit certificates of disposal to the Government within 30 calendar days of the date that the disposal of the PCB waste identified on the manifest was completed. Include:

a. The identity of the disposal facility, by name, address, and EPA identification number.

b. The identity of the PCB waste affected by the Certificate of Disposal including reference to the manifest number for the shipment.

c. A statement certifying the fact of disposal of the identified PCB waste, including the date(s) of disposal, and identifying the disposal process used.

d. A certification as defined in 40 CFR 761, Section 3.

3.12 SAMPLING

3.12.1 Sampling of Stored Material

Immuno Assay field samples of potentially clean stored material shall be collected at a frequency of one 15 point composite per 500 cubic yards.

Samples of potentially contaminated stored material shall be collected at a frequency of one 10 point composite per 200 cubic yards.

Samples shall be tested for the following:

Section 02 61 13 Page 11

Chemical Parameter Action Level

Total PAHs Total PCBs

45ppm 1ppm

Stored material with contaminant levels that exceed the action levels shall be disposed off at an approved waste disposal facility. Analyses for contaminated material to be taken to an offsite treatment facility shall conform to local, state, and federal criteria as well as to the requirements of the treatment facility. Documentation of all analyses performed shall be furnished to the Contracting Officer. Additional sampling and analyses to the extent required by the approved offsite treatment, storage or disposal (TSD) facility shall be the responsibility of the Contractor and shall be performed at no additional cost to the Government

3.12.2 Sampling Liquid

Liquid collected from excavations and storage areas shall be sampled at a frequency of once for every 500 gal of liquid collected. Samples shall be tested for the following:

Chemical Parameter Action Level

Total PCBs 1ppb

Liquid with contaminant levels that exceed action levels shall be disposed of offsite. Analyses for contaminated liquid to be taken to an offsite treatment facility shall conform to local, state, and federal criteria as well as to the requirements of the treatment facility. Documentation of all analyses performed shall be furnished to the Contracting Officer.

Additional sampling and analysis to the extent required by the approved offsite treatment, storage or disposal (TSD) facility receiving the material shall be the responsibility of the Contractor and shall be performed at no additional cost to the Government

3.12.3 Sampling Beneath Storage Units

Samples from beneath each storage unit shall be collected prior to construction of and after removal of the storage unitsin accordance with EPA 560/5-86-017. Samples shall be collected at a 25 foot grid spacing from a depth interval of 0 to 0.5 feet and shall be tested for the following:

Chemical Parameter Action Level

PAHs and PCBs Above baseline results, post construction samples.

Based on test results, soil which has become contaminated above action levels shall be removed at no additional cost to the Government.

Contaminated material which is removed from beneath the storage unit shall be handled in accordance with paragraph Sampling of Stored Material. As directed by the Contracting Officer and at no additional cost to the Government, additional sampling and testing shall be performed to verify areas of contamination found beneath stockpiles have been cleaned up to

Section 02 61 13 Page 12 below action levels.

3.13 COLLECTION, TREATMENT, AND DISCHARGE OF PCB-CONTAMINATED WATER

Furnish labor, materials, and equipment necessary for collecting, treating, and discharging of PCB-contaminated surface and subsurface water in excavations at the site. Conduct excavation and backfilling operations at the site in a manner that minimizes the amount of surface and subsurface water which may collect in the open excavation. Collect standing surface water in contact with PCB contaminated material.

3.13.1 Treatment System Requirements

The Contractor shall be responsible for all aspects of verifying design parameters designing, providing, installing, operating, maintaining, and removing collection, storage, and treatment facilities as required to discharge treated waters within the treatment limits required. The treatment system shall:

a. Be capable of removing PCB contaminants to below the limit defined herein for contaminated water.

b. Include effluent holding tanks designed to allow on-site testing of water quality prior to discharge.

c. Include recycle capability for retreatment of effluent not meeting the discharge requirements of this specification, as determined by on-site testing.

d. Include granular activated carbon vessels suitable for quantity of water generated during construction activities.

3.13.2 Treatment System Operations

Monitor, test, and adjust the treatment system in accordance with the work plan and Sampling and Analysis Plan, or as otherwise modified by special regulatory requirements. If there is a conflict between requirements, the more stringent requirement shall prevail. Test water in accordance with EPA Method 608.

3.13.3 Discharge of Treated Water

Do not discharge any water until tests results showing water is below PCB contaminated water limits as specified herein. Provide erosion control at outlet of piping to minimize erosion. Discharge for treated water shall be to the Little Mill Creek.

3.13.4 Cleanup and Removal of Treatment System

Upon completion of work, close and remove from the site the surface water and groundwater treatment system. Restore the site to its original condition. Decontaminate equipment in accordance with the Contractor's Site Health and Safety Plan. Containerize, sample, test, and dispose of carbon, residues, cleaning aids, decontamination liquids, and waste as specified for the contaminated soils.

]3.14 SPILLS

In the event of a spill or release of a hazardous substance (as designated

Section 02 61 13 Page 13 in 40 CFR 302), pollutant, contaminant, or oil (as governed by the Oil Pollution Act (OPA), 33 U.S.C. 2701 et seq.), notify the Contracting Officer immediately. If the spill exceeds the reporting threshold, follow the pre-established procedures as described in the RCRA Contingency Plan for immediate reporting and containment. Immediate containment actions shall be taken to minimize the effect of any spill or leak. Cleanup shall be in accordance with applicable federal, state, and local regulations. As directed by the Contracting Officer, additional sampling and testing shall be performed to verify spills have been cleaned up. Spill cleanup and testing shall be done at no additional cost to the Government.

3.15 DISPOSAL REQUIREMENTS

Offsite disposal of contaminated material shall be in accordance with state and federal regulations.

3.16 CLOSURE REPORT

6 copies of a Closure Report shall be prepared and submitted within 14 calendar days of completing work at the site. The report shall be labeled with the contract number, project name, location, date, name of general Contractor, and the Corps of Engineers District contracting for the work.

The Closure Report shall include the following information as a minimum:

a. A cover letter signed by a responsible company official certifying that all services involved have been performed in accordance with the terms and conditions of the contract documents and regulatory requirements.

b. A narrative report including, but not limited to, the following:

(1) site conditions, ground water elevation, and cleanup criteria;

(2) excavation logs;

(3) field screening readings;

(4) quantity of materials removed from each area of contamination;

(5) quantity of water/product removed during dewatering;

(6) sampling locations and sampling methods;

(7) sample collection data such as time of collection and method of preservation;

(8) sample chain-of-custody forms; and

(9) source of backfill.

c. Copies of all chemical and physical test results.

d. Copies of all manifests and land disposal restriction notifications.

e. Copies of all certifications of final disposal signed by the responsible disposal facility official.

f. Waste profile sheets.

g. Scale drawings showing limits of each excavation, limits of

Section 02 61 13 Page 14 contamination, known underground utilities within 50 feet of excavation, sample locations, and sample identification numbers.

On-site stockpile, storage, treatment, loading, and disposal areas shall also be shown on the drawings.

h. Progress Photographs. Color photographs shall be used to document progress of the work. A minimum of four views of the site showing the location of the area of contamination, entrance/exit road, and any other notable site conditions shall be taken before work begins. After work has been started, activities at each work location shall be photographically recorded daily. Photographs shall be a minimum of 3 by 5 inches and shall include:

(1) Soil removal and sampling.

(2) Dewatering operations.

(3) Unanticipated events such as spills and the discovery of additional contaminated material.

(4) Contaminated material/water storage, handling, treatment, and transport.

(5) Site or task-specific employee respiratory and personal protection.

(6) Fill placement and grading.

(7) Post-construction photographs. After completion of work at each site, take a minimum of four views of each excavation site.

A digital version of all photos shown in the report shall be included with the Closure Report. Photographs shall be a minimum of 3 inches by 5 inches and shall be mounted back-to-back in double face plastic sleeves punched to fit standard three ring binders. Each print shall have an information box attached. The box shall be typewritten and arranged as follows:

Project Name: Direction of View:

Location: Date/Time:

Photograph No.: Description of View:

BACKFILLING, GRADING, TOPSOILING, AND SEEDING

Commence backfilling of the excavation within 10 calendar days after receiving confirmatory test results that indicate no further PCB contamination is present. Soils brought in from off site for use as backfill shall contain less than one part per million (ppm) PCBs. Provide borrow site testing for PCBs from composite sample of material from borrow site, with at least one test from each borrow site. Material shall not be brought on site until tests have been approved by the Contracting Officer.

Provide backfill, compaction, grading, and seeding in accordance with Section 31 00 00 EARTHWORK.

-- End of Section --

Section 02 61 13 Page 15

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R eg ul at io ns o

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