W912BU-15-B-0009_Specs_AM2.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

Dredging and Rock Removal, Delaware River Main Channel Deepening, PA, NJ, and DE

THIS AMENDMENT DOES NOT EXTEND THE 25 AUGUST 2015 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-15-B-0009

08/13/2015

07/22/2015

This page was intentionally left blank for duplex printing.

Amendment No. 0002

IFB W912BU-15-B-0009

14. DESCRIPTION OF AMENDMENT (continued)

a. SECTION 35 30 00 – UNDERWATER DRILLING AND BLASTING: Please delete pages 13 and 19 of this section and substitute revised pages 13 and 19, annotated Amendment No. 0002, attached hereto.

b. Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment No. 0002. Failure to acknowledge all amendments may be cause for rejection of the bid.

d. Monitor the blast area to prevent any boat or vessels from inadvertently entering the blasting area during the lightning hazard.

e. Remove the lightning detector from the drill barge with the last evacuation vessel and continuously monitor the potential hazard until the danger has passed.

f. After sounding the All Clear Signal, notify the Coast guard and the Contracting Officer, or his representative, that the potential hazard has passed.

g. Resume operations only after all potential of hazard has passed the Contractor shall obtain approval from the Contracting Officer to resume operations.

1.6.4 Navigation Control during Drilling, Loading, and Blasting Operations

Develop a Navigation Control Plan, which is incorporated into the Operational Blast Plan that shall provide the procedures required to maintain safe passage of all vessels within the Delaware Main Channel, during the project. The Contractor shall maintain a 1/2 channel to a depth of -40 MLLW for all marine traffic along the Delaware during the project.

The 1/2 channel shall be maintained at all times, except during blasting events.

The Contractor shall buoy the area with warning signs. The warning signs shall be legible from a distance of 200 feet and shall contain the message

"DANGER - EXPLOSIVES IN USE" visible on either side of the sign.

Operate two or more patrol boats during blasting operations equipped with a visible yellow flashing light, audible horn, and radio with a hailer, whose sole function shall be to monitor and maintain security in the blast area.

A patrol boat shall be stationed at the drill barge and remain in the blasting area during all blasting operations. Land oriented access control and visual observation locations should be determined and approved by the Contracting Officer. Inspect and insure there is no boat traffic within the buoyed work area prior to the firing of the blasting caps and until such time as the "All Clear Signal" has sounded. Establish and maintain a warning system as required by the Corps of Engineers Safety Manual. Equip and maintain floating plant with radio equipment capable of communications with the Coast Guard. After each blast, upon inspecting the area, immediately notify the Coast Guard and the Contracting Officer if all clear or misfire is noted.

Maintain the work areas that are not completed and accepted by the Corps to a depth of -40 MLLW. In addition, for work located along the channel centerline, remove immediately obstructions that have impacted the main channel above a depth of -40 MLLW, prior to the all clear signal, for marine traffic to resume.

The Corps of Engineers will provide clearance surveys, following rock blasting activities along the centerline of the main channel. The clearance surveys will be conducted immediately following a blast, to ensure that no rock material has fallen into the 1/2 channel used for marine traffic.

Section 35 30 00 Page 13

1.6.5 Coordination with the U.S. Coast Guard

Notify the Coast Guard 24 hours prior to a scheduled shot and 2 hours prior to the actual shot. The channel must be kept open to vessel traffic at all times except as permitted by the Coast Guard and the Contracting Officer.

Specific requirements for notifying the Coast Guard shall be included in the Navigation Control Plan. Contact should be made with:

Commander (VTS) Coast Guard Delaware Bay Sector 1 Washington Avenue Philadelphia, PA 19147 Telephone: 215-271-4800

1.6.6 Contingency Plan in Case of Misfire, Inadvertent Initiator

1.6.6.1 Extraction, or Accidental Loss of Down Lines

Submit a contingency plan to the Coast Guard and Contracting Officer prior to initiation of any blasting and shall notify both parties in the event of a misfire, inadvertent initiator extraction, or accidental loss of down lines. All undetonated explosives due to misfire, inadvertent initiator extraction, or accidental loss of down lines must be detonated. Immediately notify the Coast Guard upon giving the "All Clear Signal" after correcting the misfire, inadvertent initiator extraction, or accidental loss of down lines.

Notify the public at least 24 hours prior to any scheduled blast, and at least 2 hours prior to an actual blast. As a minimum the following shall be notified:

a. Chester Township Police/Fire - 610-447-7931/7765

b. Eddystone Borough Police/Fire - 610-874-9325/5800

c. Trainer Borough Police/Fire - 610-494-7399/485-4393

d. Marcus Hook Borough Police/Fire - 610-485-1611/485-4393

1.7 PROJECT/SITE CONDITIONS

See Section 00 73 41 GEOTECHNICAL DATA, and Section 35 20 23 DREDGING, Subpart "Material to be Dredged", for a description of material to be removed as part of this contract.

PART 2 PRODUCTS

2.1 GENERAL

Follow the appropriate regulations for the transportation, storage and handling of all explosives that shall be used for the project. Whenever explosives are used, they shall be of such types and quantities that are permitted by the State and local regulations. Provide to the Contracting Officer product specification sheets, for all explosives, primers, boosters, initiation systems, and delays.

2.2 BLASTING PRODUCT SPECIFICATIONS

Blasting products to be utilized for this project shall be appropriate for

Section 35 30 00 Page 14 underwater blasting, and shall be economical to use. Characteristics to evaluate the explosive that concern environmental factors include, sensitiveness, water resistance, fumes, flammability and temperature resistance.

2.2.1 Explosives

The following shall be required when bulk explosives are used:

a. Explosives delivered to the work area shall be inventoried or weighed by a certified weigh master at the transfer location nearest the work area to determine the actual quantity of explosives delivered each day.

b. Explosives are known to deteriorate with age. All explosives used on the project are required to be one year or less of age. Date codes on cartridge explosives shall be used to determine age of product. No blasting product will be brought on the project if the date codes are missing.

c. Bulk explosives such as ammonium nitrate and fuel oil may, due to evaporation or improper mixing, not contain the proper amount of diesel oil. Other explosives such as emulsions and watergel explosives may not be properly mixed and produce a low energy release. Product that does not meet the manufacturer's specifications shall not be used on the project.

d. Storage of all explosives, blasting agents or detonators, shall comply with all Federal, State and local regulations governing explosive storage. The Contractor shall include storage plans along with the type of magazine or explosive storage facility to be used for the project. The Contractor shall be required conform to record keeping, placarding, safe distances, and all other requirements concerning storage.

e. Each drill frame shall measure the quantity of explosives loaded in all holes with weigh scales or flow metering devices to within 0.5% of the design quantity for each hole. The total of all loaded holes shall be checked with the total quantity delivered prior to subsequent bulk deliveries. Should the bulk quantity delivered vary from the recorded quantity loaded and detonated, all measuring devices and or meters shall be recalibrated to within the specified accuracy.

2.2.2 Primers

Primers are explosive units that contain an initiator, and are used to detonate the borehole charge. Each hole loaded with emulsions or slurry shall be initiated with two separate downlines and two primers. At least one primer shall be secured in the hole with a mechanical lock-in system or spider to prevent extraction of the priming charge.

2.2.3 Boosters

Boosters are explosive units that are placed in the borehole along with the borehole charge to add additional energy into blast.

2.2.4 Delays

The Contractor shall incorporate the use of delays, greater than or equal

Section 35 30 00 Page 15 to 25 milliseconds, into the blast pattern design to reduce the peak particle velocities generated during blasting.

Delay elements in blasting caps are known to deteriorate with age. All blasting caps used on the project are required to be one year or less of age. In addition, to ensure the accuracy of firing times of blasting caps, it is required that each cap period come from one lot number. Mixing of lot numbers for any one cap period is prohibited.

2.2.5 2.2.5 Initiation Systems

The initiation system transfers the detonation signal to the blast pattern at a precise time. Employ a non-electric initiating system for use during blasting activities. Electric or electronic initiating systems and detonating cord shall not be allowed at any time.

2.2.6 Stemming

Use appropriate size stemming material and appropriate stemming distance, to maximize the blast design. The stemming material shall consist of clean, crushed stone of gravel size.

PART 3 EXECUTION

3.1 BLASTING METHODS AND PROCEDURES

Text

3.1.1 General

The blasting program and methods shall be those developed by the test blasting program and procedure to accomplish the excavation shown on the contract drawings in accordance with the procedures specified herein. The Contractor shall also take appropriate measures for controlling blast damage which shall include but are not limited to:

a. Choosing a suitable ignition pattern with millisecond delay detonators to minimize the instantaneous impulse.

b. Using appropriate charges in each delay to control vibrations and manage breakage.

c. Taking precautions to avoid flashover, which shall include the following measure unless otherwise allowed by the Contracting Officer:

Optimizing the depth at the top of hole left uncharged to prevent against flashover yet obtain necessary breakage.

d. One person shall be charged with overall development of pattern design, loading and connecting the explosives and may supervise subordinates, who also shall have blasting credentials to accomplish the same duties.

e. Proper lighting plant shall fully illuminate the drilling and loading barge(s) when work is being conducted without full daylight.

Drilling shall be vertical with a hole diameter of 6-inches or smaller. Blast holes shall be accurately positioned using a Differential Global Positioning System (DGPS) and recorded with electronic drill monitoring.

Section 35 30 00 Page 16

f. Determine a safe means to drill, load and connect the firing lines to the submerged borings. The vertical loading casing shall be seated into rock and accurately positioned by modern survey procedures.

3.1.2 Blasting

Blasting shall be confined to daylight hours during the period from 2 hours after sunrise to 1 hour before sunset, but shall not be conducted before 9:00 A.M. or after 6:00 P.M. on the day of blasting. Blasting shall not be conducted when temperature inversions or heavy, low-level cloud cover exists.

3.1.3 Vibration Control

Where blasting is necessary, employ a specialist qualified in vibration control methods capable of analyzing results obtained from seismograph readings. A minimum of 30 days prior to commencement of blasting operations, the Contractor shall provide the Contracting Officer with credentials of the seismic specialist to include, but not limited to, past experience, training, and education, and have working a knowledge of State and local laws and regulations which pertain to blasting. The acceptability of the specialist is subject to the approval of the Contracting Officer. The Contractor's seismic specialist shall place vibration monitors, consisting of three component seismographs, on all historic structures, identified during the Pre-Blast Survey, and shall determine the placement of at least 8 additional vibration monitoring machines per blast area (minimum 4 per shore), unless greater than 1,500 feet from blast area, with approval of the Contracting Officer and shall be retained for loss control should contract blasting operations result in claims or complaints. The vibration monitoring plan shall identify the type of anchoring devices to be employed at various monitoring sites.

Structures that should have monitoring machines include, at least, bulkheads, hazardous materials storage areas and buried utilities. In addition, vibration monitoring shall be required in the vicinity of the underground storage caverns, located on the Marcus Hook Refinery property.

Blasting is prohibited within 500 ft of these underground storage caverns.

Coordinates for the approximate locations of the caverns are:

Cavern Northing Easting Cavern Northing Easting Cavern Northing Easting

#1 358,351 230,733 #3 360,639 233,720 #5 359,125 233,446

358,351 230,602 361,097 233,470 359,432 233,275

358,568 230,913 361,196 233,650 359,553 233,553

358,378 230,043 360,739 233,901 359,275 233,722

Section 35 30 00 Page 17

Cavern Northing Easting Cavern Northing Easting Cavern Northing Easting

#2 360,319 233,673 #4 358,422 232,552

360,640 232,864 358,630 232,437

360,815 233,210 358,718 232,598

360,490 233,388 358,510 232,711

At least one vibration monitoring machine must be placed between the blast and the nearest structure on a natural ground surface. This may require utilizing underwater locations. The other machines must be secured in the ground near identified maximum vibration level at any vessel or structure which is vulnerable to damage should not exceed the peak particle velocity of the appropriate municipality and geographical jurisdictions, or be subject to an unacceptable vibration frequency.

Both written and telephone report on vibration intensity shall be submitted within 24 hours when specifically requested by the Contracting Officer or, without request, when such intensity exceeds a peak particle velocity of

2.0 inches per second for any one of the 3 perpendicular planes of motion.

Blasts shall be designed and conducted to achieve either a minimum scaled distance of 90 or meet the maximum allowable peak particle velocity indicated by Figure 1 of Pa Code Chapter 211.151(c) and not exceed the noise levels specified in Table 1 of Pa Code Chapter 211.151(c) at the closest building not owned or leased by the permittee or its customer. The Contractor will perform test blasts, which will determine a safe peak particle velocity (PPV) for all structures within the blast areas. The Contractor shall follow the following vibration limits for the structures listed below:

Historic Structures PPV <0.5 in/sec

Residential Structures in PA, NJ & DE PPV <2.0 in/sec

Other Structures PPV <2.0 in/sec

The Contractor shall submit a copy of the record in tabular form for each blast to the Contracting Officer no later than 24 hours after each blast, with a written report on velocity and vibration effects. This should also include location of blast, size, spacing, number, top and bottom elevations of holes, type of explosives, amount of explosives and stemming per hole and delay, type of delays, sequence and pattern, distance from the blast to the vibration monitoring machine, and any other pertinent information.

3.2 MEASUREMENT AND PAYMENT

3.2.1 Mobilization and Demobilization

All costs connected with the mobilization and demobilization of all of the Contractor's drilling and blasting plant and equipment will be paid for at the contract lump sum price for this item. Sixty percent of the lump sum price will be paid to the Contractor upon completion of his mobilization at the first work area. The remaining forty percent will be included in the final payment for work under this contract.

Section 35 30 00 Page 18

3.2.1.1 Cost Data

In the event the Contracting Officer considers that the amount in this item (60 percent) which represents mobilization, does not bear a reasonable relation to the cost of the work in this contract, the Contracting Officer may require the Contractor to produce cost data to justify this portion of the bid. Failure to justify such price to the satisfaction of the Contracting Officer, will result in payment of actual mobilization costs, as determined by the Contracting Officer at the completion of mobilization, and payment of the remainder of this item in the final payment under this contract. The determination of the Contracting Officer is not subject to appeal.

3.2.1.2 Mobilization and Demobilization Costs

All costs connected with the mobilization and demobilization of the Contractor's drilling and blasting plant and equipment as defined below shall be included in the contract lump sum price for Bid Item No. 1, "Mobilization and Demobilization", as listed in the Bidding Schedule.

a. Mobilization shall include all costs for operations accomplished prior to commencement of actual drilling and blasting operations; i.e., transfer of drilling and blasting plant, and equipment to site; and other incidentals in advance of the actual drilling and blasting operations.

b. Demobilization shall include general preparation for transfer of plant to its home or standby base.

3.2.2 Drilling and Underwater Blasting

The work specified in this section for drilling and blasting operations will not be measured for payment and all costs in connection therewith shall be included in the contract unit price for the Bid Item titled "Areas Required to be Dredged to -47 MLLW".

-- End of Section --

Section 35 30 00 Page 19