pd2_W912EP-16-R-0033-0008s.pdf

W32CS560544225

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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.

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

WETLAND RESERVE PROGRAM, DEVILS GARDEN SLOUGH WETLANDS RESTORATION PLAN HENDRY COUNTY, FLORIDA W912EP-16-R-0033 is hereby amended. (See the SF30 continuation page for Amendment details)

The proposal receipt date has changed to 05/09/2017 by 1500.

All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 24-Apr-2017

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912EP-16-R-0033

X 9B. DATED (SEE ITEM 11)

30-Jan-2017

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

Offer 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 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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 you 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.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

24-Apr-2017

CODE

USA ENGINEER DISTRICT, JACKSONVILLE

CONTRACTING DIVISION

701 SAN MARCO BLVD

JACKSONVILLE FL 32207-8175

W912EP 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

SF 30 CONTINUATION SHEET

WETLAND RESERVE PROGRAM DEVILS GARDEN SLOUGH WETLANDS RESTORATION PLAN

HENDRY COUNTY, FLORIDA

W912EP-16-R-0033

SUMMARY OF CHANGES

1. SPECIFICATIONS:

A. In some Volume 1 sections, asterisks may appear before and after the line or lines where revisions have been made to the text, and pertain only to changes made by this amendment. In some cases, replacement clauses are attached to this amendment.

B. In Volume 2 sections, the text changes have been updated with additions noted by underlined text and deletions noted by strike-outs, and pertain only to changes made by this amendment. The entire section or specific pages may be replaced if there is any change. The Project Table of Contents and Submittal Register are replaced without underlines and strike-outs if there are changes to these documents.

Changes to Specifications:

Volume 1 of 2 – Contract Documents:

N/A

Volume 2 of 2 – Technical Specifications:

DELETE Section 261 and REPLACE with the attached revised Section 261.

2. DRAWINGS:

N/A

(End of Summary of Changes)

AMD 0008

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Project Specifications – Devil’s Garden Slough Wetlands Restoration Project

Construction Specification 261—Well Decommission

1. Scope The work shall consist of furnishing and installing materials to decommission a water supply well. Well locations and details are provided in Appendix 261A at the end of this section.

2. Temporary abandonment When any well is temporarily removed from service, the top of the well shall be sealed with a tamper resistant, water tight cap or seal. If a well is in the process of being drilled and is temporarily abandoned, the well shall be sealed with a tamper resistant, water tight cap or seal and a surface seal. The well may be temporarily abandoned during construction for a maximum of 90 days. After the 90 day period, the temporarily abandoned well shall be completed as a well that meets the standards of construction specification 261 or permanently abandoned in accordance with the following requirements, and an official well abandonment report (abandonment log) must be submitted to the regulating office.

3. Permanent abandonment The rules of this section apply to the abandonment of wells including private water wells, public supply wells, monitor wells, cathodic protection wells, and heating or cooling exchange wells. A licensed driller shall notify the regulating agency prior to commencing abandonment work and submit a complete and accurate abandonment log following abandonment work in accordance with regulating agency rules. Prior to commencing abandonment work, the driller shall obtain a copy of the well log of the well proposed to be abandoned from the well owner, or the state engineer or other applicable agency, if available, in order to determine the proper abandonment procedure. Any well that is to be permanently abandoned shall be completely filled in a manner to prevent vertical movement of water within the borehole as well as preventing the annular space surrounding the well casing from becoming a conduit for possible contamination of the groundwater supply. A well driller who wishes to abandon a well in a manner that does not comply with the provisions set forth in this section must request approval from the Contracting Officer’s Representative (COR).

4. License required Well abandonment shall be accomplished under the direct supervision of a currently licensed water well driller who shall be responsible for verification of the procedures and materials used.

5. Disinfection Before sealing, the entire column of well water shall be brought to an available chlorine concentration of 50 ppm or greater, or other solution specified by local or state requirements. After being agitated in the well water, the chemical solution shall be left for no less than 24 hours to assure complete disinfection.

6. Acceptable materials Neat cement grout, sand cement grout, unhydrated bentonite, or bentonite grout shall be used to abandon wells and boreholes. Other sealing materials or additives, such as fly ash, may be used in the preparation of grout upon approval of the state Contracting Officer’s Representative (COR). Drilling mud or drill cuttings shall not be used as any part of a sealing materials for well abandonment. The liquid phase of the abandonment fluid shall be water from a potable municipal system or disinfected.

7. Placement of materials

7.1 Neat cement and sand cement grout shall be introduced at the bottom of the well or required sealing interval and placed progressively upward to the top of the well. The sealing material shall be placed by the use of a grout pipe, tremie line, dump bailer or equivalent in order to avoid freefall, bridging, or dilution of the sealing materials or separation of aggregates from sealants. Sealing material shall not be installed by freefall (gravity) unless the interval to be sealed is dry and no deeper than 30 feet below ground surface. No wells to be abandoned per this contract are expected to be artesian. Notify the Contracting Officer if a well is discovered to be artesian. If the well to be abandoned is determined to be a flowing artesian well, the well may be pressure grouted from the surface. The well should be capped immediately after placement of seal materials to allow the seal material to set up and not flow out of the well.

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7.2 Bentonite based abandonment products shall be mixed and placed according to manufacturer's recommended procedures and result in a seal free of voids or bridges. Granular or powered bentonite shall not be placed under water. When placing unhydrated bentonite, a sounding or tamping tool shall be run in the sealing interval during pouring to measure fill up rate, verify a continuous seal placement, and to break up possible bridges or cake formation.

7.3 The uppermost ten (10) feet of the abandoned well casing or borehole shall consist of neat cement grout or sand cement grout.

7.4 Abandonment materials placed opposite any non-water bearing intervals or zones shall be at least as impervious as the formation or strata prior to penetration during the drilling process.

7.5 Prior to well or borehole abandonment, all pump equipment, piping, and other debris shall be removed to the extent possible. The well shall also be sounded immediately before it is plugged to make sure that no obstructions exist that will interfere with the filling and sealing. If the well contains lubricating oil that has leaked from a turbine shaft pump, it shall be removed from the well prior to abandonment and disposed of in accordance with applicable local, state and federal regulations.

7.6 Verification shall be made that the volume of sealing and fill material placed in a well during abandonment operations equals or exceeds the volume of the well or borehole to be filled and sealed.

8. Removal of casing Well casing is not required to be removed during well abandonment. shall be removed during well abandonment, and when doing so, the abandonment materials shall be placed from the bottom of the well or borehole progressively upward as the casing is removed. If some or all of the casing resists removal by pulling or over drilling, it must be ripped, perforated, or cut off below the ground surface. For the cut-off depth, use the greater of two feet or the depth of any other near-surface soil fracturing process (such as desiccation). The well shall be sealed with sand cement grout, neat cement grout, bentonite abandonment products, or bentonite grout. In the case of gravel packed wells, the entire gravel section shall be pressure grouted. The uppermost ten feet of the well shall be abandoned as required in Subsection 7.3.

9. Termination of casing if unable to remove The casings of wells to be abandoned shall be severed a minimum of three (3) feet below either the natural ground surface adjacent to the well or at the collar of the hole, whichever is the lower elevation. A minimum of two (2) feet of compacted native material shall be placed above the abandoned well upon completion.

10. Surface seal The interval between the ground surface and the top of cut off casing shall be sealed with sealing materials that conform to ASTM D5299, part 6.3. These materials may be an extension of the sealing materials used below this depth.

The interval between the ground surface and the top of the cut off casing shall be filled with soil material that achieves an in place hydraulic conductivity equivalent to or less than the surface soil surrounding the well. The ground surface at the sealed well site shall be mounded and graded in a manner that prevents ponding of surface runoff.

11. Abandonment of artesian wells A neat cement grout, sand cement grout, or concrete plug shall be placed in the confining stratum overlying the artesian zone so as to prevent subsurface leakage from the artesian zone. The remainder of the well shall be filled with sand cement grout, neat cement grout, bentonite abandonment products, or bentonite grout. The uppermost ten

(10) feet of the well shall be abandoned as required in subsection 7.3.

12. Abandonment of drilled and jetted wells A neat cement grout or sand cement grout plug shall be placed opposite all perforations, screens or openings in the well casing. The remainder of the well shall be filled with cement grout, neat cement, bentonite abandonment products, concrete, or bentonite slurry. The uppermost ten feet of the well shall be abandoned as required in Subsection 7.3, and the casing shall be terminated as specified in Subsection 89.

13. Abandonment of gravel packed wells All gravel packed wells shall be pressure grouted throughout the perforated or screened section of the well. The

261–3 remainder of the well shall be filled with sand cement grout, neat cement grout, bentonite abandonment products, or bentonite grout. The uppermost ten feet of the well shall be abandoned as required in Subsection 7.3

14. Replacement wells Wells which are to be removed from operation and replaced by the drilling of a new well under an approved replacement application, shall be abandoned in a manner consistent with the provisions of this section before the rig is removed from the site of the newly constructed replacement well, unless written authorization to remove the rig without abandonment is provided by the regulating agency

15. Abandonment of cathodic protection wells. (Not applicable to this contract)

16. Items of work and construction details for this project

a. Well abandonment This item shall consist of permanently decommissioning wells within the easement boundary. The Contractor shall follow all the requirements of this specification, Hendry County Health Department, and the State of Florida for the decommissioning of the aforementioned wells.

The following Special Conditions (SC) apply:

SC.261 WELL ABANDONMENT

SC.261.1 THE REQUIREMENT

Furnish all labor, materials, equipment, and all other facilities and incidentals required to plug former production wells ranging from 4 in to 12 in diameters. Wells may require old motors and pumps to be removed from the well prior to grouting activities. The tremie method of plugging shall be used on all wells designated for abandonment using neat cement grout or bentonite. All well abandonments shall be in accordance with Rule Chapter 40E 3, F.A.C.

and these specifications. Well abandonment must be conducted by a licensed water well contractor.

This Special Condition is intended to give a general description of what is required, but does not cover all variations that may occur during well plugging. This Section is intended to cover successful well plugging as herein specified, whether every detail is specifically mentioned or not.

SC.261.2 REFERENCE STANDARDS

American Water Works Association (AWWA) A 100 06.

American Society for Testing and Materials (ASTM) D 5299 99 Standard Guide for Decommissioning of Groundwater Wells, Vadose Zone Monitoring Devices, Boreholes, and Other Devices for Environmental Activities.

American Petroleum Institute (API).

The latest revisions of the F.A.C., Florida Department of Environmental Protection, Chapters 62 531, F.A.C. and 62 532, F.A.C. shall apply as referenced herein.

The latest revisions of Water Management Rules, Chapter 40E 3, Regulation of Wells, South Florida Water Management District (SFWMD), shall apply as referenced herein.

FDEP Monitoring Well Design and Construction Guidance Manual dated 2008.

Where reference is made to one of the above standards, the revisions in effect at the time of the bid opening shall apply.

SC.261.3 REVIEW

The Contracting Officer’s Representative (COR) shall review with reasonable promptness the proposed plugging plan, samples, backfill materials, and other required submittals; but the Contracting Officer’s Representative (COR)’s review shall be only for conformance with the design concept of the project and with the information given in the

261–4 contract documents. The Contracting Officer’s Representative (COR)’s review shall not relieve the Contractor from responsibility for any deviations from the Contract Documents unless the Contractor has, in writing, called the Contracting Officer’s Representative (COR)’s attention to such deviation at the time of submission and the Contracting Officer’s Representative (COR) has given written concurrence to the specific deviation.

SC.261.4 SUBMITTALS

SC.261.4.1 Contractor shall submit to the Contracting Officer’s Representative (COR) a list of materials and the name of the manufactures of the materials to be used to establish compliance with the Special Condition. The list of materials shall include, but is not limited to grout, bentonite, drilling mud, fluid additives, and lost circulation material. Information shall be submitted to the Contracting Officer’s Representative (COR) at least 15 days before the execution of the work.

SC.261.4.2 Contractor shall submit to the Contracting Officer’s Representative (COR) the source of the potable water supply, written authorization of the supplier, and the method of transporting and containing the water at the site. The method for the disposal of drilling fluids shall also be submitted by the Contractor. Information shall be submitted to the Contracting Officer’s Representative (COR) at least 15 days before the execution of the work.

SC.261.4.3 During the plugging of the well, two sets of cement grout samples shall be collected and preserved, in a manner approved by the Contracting Officer’s Representative (COR). Samples shall be clearly and indelibly labeled with the following information: location of the well; name or number of the well; depth interval represented by the sample; date take; and time taken.

SC.261.4.4 During the plugging of the well, a daily detailed driller’s report shall be maintained and submitted as requested by the Contracting Officer’s Representative (COR). The log shall setting forth the reference point for all depth measurements (using an NAVD88 datum); the depth at which material is set; and the depth at which whole diameters change. Additionally, the Contractor shall record the depth or location of any lost fluids, drilling materials, or tools; the amount of cement grout (number of sacks) used for the plugging; the depth interval of cement grout; and any other pertinent data. The log shall give a complete description of amount of cement grout installed, numbered of feet plugged, number of hours on the job, and shutdown due to breakdown and other pertinent data requested by the Contracting Officer’s Representative (COR). Video logs will be required for any blockages encountered in the well or at the Contracting Officer’s Representative (COR)’s request for trouble shooting well abandonment.

SC.261.4.5 Upon completion of the well plugging, submit to the Contracting Officer’s Representative (COR) a report to include the depth or locations of any lost fluids, drilling materials, or tools; the amount of cement grout (number of sacks) used for the plugging; the depth interval of cement grout; and other pertinent data requested by the Contracting Officer’s Representative (COR). Preliminary copies of the well completion report shall be submitted to Contracting Officer’s Representative (COR) within 24 hours and the final copies within 7 days of completion of the well plugging. Well completion reports must be submitted by the Contractor to the SFWMD within 1 month of the date of the completion of plugging.

SC.261.5 QUALITY ASSURANCE

SC.261.5.1 The Contractor responsible for plugging the wells shall be licensed by the FDEP (Chapter 62 531, F.A.C.)

as a water well Contractor employing only competent personnel for the execution of this work and all such work shall be performed under the direct supervision of an experienced well driller satisfactory to the Contracting Officer’s Representative (COR).

SC.261.5.2 The well driller shall be capable of identifying geologic formations, maintaining complete and current well logs and daily notes for the well plugging and completion report.

SC.261.5.3 The Contracting Officer’s Representative (COR) may make any other investigations deemed necessary to determine the ability of the Contractor to perform the work and the Contractor shall furnish to the Contracting Officer’s Representative (COR) all such information and data for this purpose as the Contracting Officer’s Representative (COR) may request.

SC.261.5.4 Furnish satisfactory evidence upon request, that all materials to be furnished in performing the specified work are new and all equipment to be used is in good working order.

SC.3.5.5 Complete the work described in this Section in accordance with applicable portions of the Rules of the FDEP Chapter 62 532 F.A.C., and modifications to those Rules granted by SFWMD.

SC.261.6 NOTIFICATION

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Five days prior to the commencement of Work, the Contractor shall supply to the Contracting Officer’s Representative (COR) in writing, with the proposed work schedule including the starting date and the completion date of the well plugging program.

Five days prior to the commencement of Work, the Contractor shall notify the Contracting Officer’s Representative (COR) in writing, as to the number of well plugging rigs and personnel to be used on the project. Any change in the number of rigs and personnel shall require written notification to the Contracting Officer’s Representative (COR), 48 hours prior to the change.

Forty eight hours prior to the start of any plugging activities, the Contracting Officer’s Representative (COR) and the Owner shall be contacted by the Contractor. The Contractor shall similarly notify SFWMD and other regulatory agencies as required.

No work shall be performed by the Contractor without completing these notification requirements.

SC.261.7 PERMITS

Within 10 working days of receipt of notice to proceed, apply for well plugging permits from SFWMD. The wells shall be plugged in accordance with the Rules of FDEP Chapter 62 532, F.A.C. and rules by the SFWMD Chapter 40E 3 for this project. The permits shall be available for inspection at the site, during the plugging procedures. The Contractor shall be responsible for obtaining permit time extensions in accordance with the rule specified above, if well work extends beyond the permit validity date.

The Contractor shall be responsible for obtaining any Federal, State, or local permits required for plugging the well, discharging water from the site, or clearing the site for work or access.

The Contractor shall not perform any work on the well until these permits are obtained.

The Contractor shall furnish separate copies of all permits to the Owner and Contracting Officer’s Representative (COR) as the permits are received. Copies of all permits shall be furnished to the Contracting Officer’s Representative (COR) prior to mobilization.

SC.261.8 UNDERGROUND AND OVERHEAD UTILITIES

The Contractor should be responsible to coordinate with the Owner to locate any underground and overhead utilities at the site, prior to the start of well plugging. Damage to underground and overhead utilities resulting from the actions of the Contractor are the sole responsibility of the Contractor.

SC.261.9 WARRANTY

Well plugging to include backfilling, plugging, capping, and sealing shall be warranted for a period of 2 years. If any portion of the well abandonment fails during the warranted period, replace or restore that portion of the abandonment at no expense to the Owner.

SC.261.10 PRODUCTS

SC.261.10.1 GROUT

The Grout used to fill the borehole and casing from the bottom of the well casing to the ground surface shall be Type I/II (ASTM C150), neat Portland cement. The amount of water added to cement shall be no greater than specified by the manufacturer unless approved by the Contracting Officer’s Representative (COR). Up to 4% Bentonite (manufactured by Bariod or approved equal) can be added to the neat cement to decrease the amount of shrinkage.

Slurry grout density shall be no less than 14.6 lbs/gal and no more than 15.2 lbs/gal with respective slurry yields of

1.37 ft3/sack to 1.25 ft3/sack.

SC.261.10.2 DRILLING FLUIDS

All drilling mud shall be Quick Gel as manufactured by N. L. Baroid Inc. or approved equal. The use of drilling mud, fluid additives, or lost circulation material must have the prior approval of the Contracting Officer’s Representative (COR). All water used for plugging of the wells shall be potable water as defined by FDEP.

SC.261.11 EXECUTION

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The Contractor shall initially remove the existing motors, pumps, flanges, plumbing and fittings. The Contractor shall verify the total depth of each well. The Contractor shall then install grout from the bottom of the well via tremie pipe and grout to within two feet of the land surface. The Contractor shall cut the casing to three feet below ground level and backfill the whole with soils and level it to existing grade.

SC.261.11.1 GROUT INSTALLATION

The Contractor shall install neat cement grout from within 5 feet from the bottom of the well. All grout shall be pumped using a tremie pipe using a minimum of 1.5 inch diameter tremie pipe. The tremie shall initially be placed a minimum of within 5 feet above bottom of the well. The grouting shall be done continuously and in such a manner that will assure the filling of the borehole and casing in continuous lifts. No work on the well will be permitted until at least 24 hrs. after grouting the well. Notification to the SFWMD or other local officials is responsibility of the Contractor. The Contractor shall take full responsibility for grouting operations, including volumes to be used and insuring the tremie pipe is not cemented. No payment will be made for loss of tremie pipe.

SC.261.11.1 FAULT WELL PLUGGING

If the Contractor fails to meet the Well Plugging Acceptance Criteria in SC.3.1 above, the Contractor shall remove improperly placed material from the well and plug the well as specified, at no additional cost to the Owner.

SC.261.11.2 PROTECTION AND SITE CLEAN UP

At all times during the progress of the work, use all reasonable precautions to prevent either tampering with the wells or the entrance of foreign material. Immediately upon completion of a well, the Contractor shall remove all of the equipment, materials, and supplies from the site of work, remove all surplus materials and debris including above ground piping, valves and concrete pad, and fill in all holes or excavations, and grade the site to elevations of the surface levels which existed before the work started, and sod to match existing. The site shall be thoroughly cleaned by the Contractor and approved by the Contracting Officer’s Representative (COR). If the Contractor fails to comply with these requirements, the Owner has the option to retain another contractor to complete the cleanup, grading, etc. The cost of this work shall be deducted from money due to the Contractor or to become due for plugging of the wells.