A22_Amendment_2.pdf

W81C8X83485832

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

Reference above numbered Solicitation to reflect the follow ing amendments:

See the follow ing pages.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 41

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

16C. DATE SIGNED

BY 09-Apr-2019

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 W912P919R0023

X 9B. DATED (SEE ITEM 11)

06-Mar-2019

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 1 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

09-Apr-2019

CODE

CONTRACTING DIVISION

US ARMY ENGR DIST ST LOUIS

1222 SPRUCE STREET, RM 4.207

ST LOUIS MO 63103-2833

W912P9 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P919R0023

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

AMENDMENT 2

HARLEM BADEN, PACKAGE 8

NOTE TO CONTRACTORS – THERE ARE CURRENTLY 2 AMENDMENTS FOR THIS SOLICITATION: AMENDMENT 1 & AMENDMENT 2. BOTH AMENDMENTS WILL HAVE THE OFFICIAL SF30 FORM ATTACHED, FOR WHICH THE CONTRACTOR SUBMITTING A PROPOSAL MUST SIGN, DATE, AND RETURN WITH THEIR PROPOSAL. THE FBO

ANNOUNCEMENT FOR SOLICITATION W912P919R0023 ERRONEOUSLY SHOWS AMENDMENT 1 AND

AMENDMENT 2 (AND WILL NOW SHOW AMENDMENT 3 WITH THIS UPLOAD). PLEASE REMEMBER, THE SF30

FORM IS THE OFFICIAL AMENDMENT.

THIS AMENDMENT CONSTITUTES THE FINAL CUT-OFF FOR SUBMISSION OF QUESTIONS. THE BID DUE DATE IS 24

APRIL 2019 AT 1:00 P.M.

Contractor Questions/Government Answers

1. The Project is an Indefinite Quantity (Two-Year IDIQ with multiple task orders) Contract.

Question: How will the project be funded? Do you expect work stoppages while additional funding is obtained?

Please provide as much information as possible regarding funding, possible work stoppages, and schedule. This will impact the schedule that is required to be submitted as part of Subfactor C.

RESPONSE: Bid as specified for a 2 year period of performance with potential for up to 2 temporary closures and re-openings to occur at most efficient breakpoint in work and be adjusted through contract modification.

2. What are the Bid Bond requirements? Is a special form needed? What amount is needed?

RESPONSE: A Bid Bond should be submitted with the RFP. Please use the Standard Form 24 for Bid Bonds. The percentage amount required is 20% of the bid price, but not to exceed $3 Million.

3. The “Clean and Prepare Sewer” bid item quantity of 700 LF does not match the total linear footage of the project. Please clarify or revise to reflect the footage for the entire project.

RESPONSE: should be 7000 LF. See revised bid schedule per amendment.

4. Please provide detailed plans that include profiles of the sewers listed in table 1 (West of Hamilton Ave.)

RESPONSE: See drawing “Attachment A” and Table 1 of the specifications. No additional drawings or profiles are available.

5. Should manholes be buried or inaccessible, please confirm who will be responsible for raising the MH to grade and/or making the modifications needed to safely access the MH/pipe.

RESPONSE: Contractor is responsible as specified in Section J, 3 C 1.

6. Is the PPQ (including 3 page adjective rating evaluation) excluded from the Past Performance page limitation (10 pages, stated on page 12 of solicitation)?

RESPONSE: Yes, the PPQ (including the 3 page adjective rating evaluation) is excluded from the Past Performance page limitation.

7. Are PPQs required for personnel, company and product experiences (technical, similar, previous)?

RESPONSE: Past Performance Questionnaires are required for evaluation purposes for same/similar size, scope, complexity, and dollar magnitude of work performed as the requirement. The work may be current projects or projects performed within the timeframe stated in the Evaluation Criteria listed in Part II of the Solicitation under Past Performance.

8. Question regarding geopolymer experience (Waiting for return call from Corps contact).

RESPONSE: All questions should be submitted in writing. Pages 13-15 of the technical project specifications list the requirements for experience.

9. Section 00 70 00 – Conditions of the Contract, LOCAL CLAUSES, (a)(2) states: The small business size standard is $36.5M.

Question: How does this apply to this Project?

RESPONSE: The size standards are for the most part expressed in either millions of dollars (those preceded by “$”) or number of employees (those without the “$”). A size standard is the largest that a concern can be and still qualify as a small business for Federal Government programs.

10. Section 00 70 00 – Conditions of the Contract, LOCAL CLAUSES, (c)(1)(C)(iv) states: Women-Owned Business (Other Than Small Business) … Question: How does this apply to this project? Is there a requirement or goal for the use of WBE or MBE business entities?

RESPONSE: This clause indicates that if you are a Woman-Owned Small Business, and the solicitation is for utility services where rates are set by law/regulation, the Clause under 52.204-5 Women-Owned Business (Other than Small Business) is applicable to your company. When a contractor completes the Representation & Certifications in the System for Award Management (SAM), they should make sure to check the appropriate information listed in the clause. This solicitation is issued as Unrestricted, Full and Open Competition, therefore it is not set-aside for any socio-economic group.

11. Section 52.232-16 PROGRESS PAYMENTS Because this is a unit price contract this section does not appear to apply to this contract.

Question: Is that correct? Please verify that progress payments will be based on the bid units and a schedule of values. Also clarify the retainage percentage.

RESPONSE: Clause deleted. There is no set amount of retainage.

12. Section 00 08 00 SPECIAL CONTRACT REQUIREMENTS, 1.22 ORDER AND COORDINATION OF WORK, Q.

DEMOBILIZATON AND REMOBILIZATION

No additional payment shall be made for demobilization or remobilization required as a result of changing sewer levels or rain events.

Question: is there historical flow data available for this system?

RESPONSE: provided in amendment 0001.

13. Part 1 of the General Conditions, 8. Demobilization and Remobilization (c.) states: “For the purpose of Bidding and the construction Contract, it is estimated that there will be two (2) temporary closures and two (2) reopenings during the Contract period. Actual number of temporary closures and reopening will be adjusted through a Contract modification.”

Question: Should the Bid Quantity be 2 instead of 1?

RESPONSE: No. Payment will be made for a single mob/demob, but the contractor should make the assumption to include 2 closures and reopenings.

14. Part 7 – TRENCHLESS SEWER CONSTRUCTION, Section 4. Preparation of Surfaces, Subsection f. reads:

In the sewer to be rehabilitated and in existing laterals for a distance of 2 feet into the lateral, the surface of calcite deposits shall be roughened by sand-blasting or grinding to produce a surface to which the liner can bond. Calcite ridges shall be removed to a level such that the minimum liner thickness or reinforcement cover can be obtained.

Question: Since calcite deposits normally protrude into the sewer ordinarily these deposits need to be removed to the wall of the sewer to create a uniform surface prior to applying the geopolymer at the design thickness. Please clarify that calcite deposits that protrude away from the wall of the sewer will need to be removed.

RESPONSE: yes, calcite deposits should be removed. Revised Subsection f is changed to read:

Part 7 Trenchless Sewer Rehabilitation; Section P, Spray Applied Liner; 4. Preparation of Surfaces; Delete paragraph f. on page 19 and replace with the following:

f. In the sewer to be rehabilitated and in existing laterals for a distance of 2 feet into the lateral, the surface of calcite deposits shall be removed to the wall of the sewer to create a uniform surface prior to applying the geopolymer at the minimum design thickness.

15. Technical Project Specifications - Page 7 and 8 of Part 7 – Trenchless Sewer Construction, discusses VR, LC, SC and CR repairs. It is indicated that CR repairs are not foreseen.

Question: Should a CR (Corroded Rebar) repair be determined necessary, will additional funding be provided, or how should this risk be addressed by the bidders? This comes up again on Page 30, Item 8.

RESPONSE: CR repairs deleted per amendment.

16. Technical Project Specifications - Page 8 discusses Reinforced Concrete Invert paid by cubic yard.

Question: Given that CR (Corroded Rebar) type repairs are not foreseen, can bidders conclude that invert repair work will not include the addition of new reinforcement? If reinforcement is anticipated, can more details be provided to indicate the extent of rebar that will be required?

RESPONSE: Assume reinforcement in the invert. See attached Sheet 10722-S2 for informational purposes. Sheet addresses typical rebar sizes and spacing for typical sewers. Disregard specific pipe dimensions and other details that do not apply to this project.

17. What is the intent of XRF Testing? We recommend language precluding the manipulation of the material from the form in which it will be installed that would alter and possibly over inflate the pozzolanic materials by releasing compounds from the aggregate through grinding or other means. If the intent is to ensure a geopolymer as opposed to a cementitious product which will cure through hydration, additional testing to at minimum include XRD is recommended. XRF alone does not provide sufficient information to ensure a cementitious product is not being provided. Discussed again on Page 44.

RESPONSE: XRD testing added per amendment. See added specification:

Part 7 Trenchless Sewer Rehabilitation; Section P, Spray Applied Liner; 2. Spray-on Geopolymer Lining system; c. Submittal Required; Add Item 8.) on page 12 as follows:

8.) The X-Ray Diffraction (XRD) analysis report for a proposed geopolymer material and the new liner.

18. Technical Project Specifications - Page 17 testing, we request/recommend 9 samples per set with 3 to be tested at each of 7 Days, 28 Days and 56 Days (or otherwise directed). Three samples will clearly indicate if an outlier is present as can be the case any time samples are being made in field conditions.

RESPONSE: bid as specified

19. Technical Project Specifications - Page 18, Item 3 Certification Procedure, discusses preparation of test panels. This is not typically conducted for geopolymer application as would be the case with a shotcrete application. Applicators are trained, licensed and approved by the manufacturer to represent their capabilities to apply the material proposed. We request/recommend that this requirement be removed.

Question: Is it the intention that additional finishing be conducted as described (Technical Project Specifications – page 22)? Wood float followed by a sponge rubber float is not standard practice with a Geopolymer liner.

RESPONSE: See revised specification:

Part 7 Trenchless Sewer Rehabilitation; Section P, Spray Applied Liner; 7. Finishing;

Delete 1.) on page 22 and replace with the following:

1.) Place geopolymer liner to the thickness and surface planes established by troweling, spraying, centrifugal casting, or other means approved by the geopolymer manufacturer. Provide a smooth uniform surface with improved hydraulic flow properties.

20. Technical Project Specifications - Page 23 Item 5 indicates that tests shall be per 150 cubic yards of material as well as per 5,000 square feet of surface area for walls and ceilings.

Question: Section P - Page 23 Item 5; Which governs testing frequency for spray applied liners: once per day, 150 cubic yards of material or 5,000 square feet of walls and ceilings?

It should also be pointed out that we do not recommend the Liner operator prepare the samples, this is typically a hands off independent process with samples being prepared by the testing lab so as to establish chain of custody.

RESPONSE: Testing frequency to be determined by application rate per day as specified. See revised specification:

Part 7 Trenchless Sewer Rehabilitation; Section P, Spray Applied Liner; 9. Construction Testing; Delete 4.), 5.) and 6.) on page 23 and replace with the following:

4.) The frequency specified for each test is approximate. If additional tests are necessary, at the option of the District, such tests shall be performed by a third party independent laboratory at the Contractor’s expense.

5.) Tests for Spray Applied Liner shall be performed not less than once a day, nor less than once for each 150 cubic yards of Spray Applied Liner, nor less than once for each 5,000 square feet of surface area for walls and ceilings.

6.) If delamination is suspected, a core sample shall be taken from that location. If delamination is confirmed by the core sample, that core sample shall not be counted as one of the in-situ core samples required. It shall be the Contractor’s responsibility to determine the extent of the delamination to the satisfaction of the District and to remove and replace the rejected section.

21. Question: If MH’s are lined at same time as pipe, will additional testing frequency be required or can same samples be representative of both installations given the same material will be used in both pipe and MH?

RESPONSE: Testing frequency to be determined by application rate per day as specified.

22. Item 6 discusses delamination testing with a small hammer. This is not typically done.

Question: At what point in the curing process will this testing be conducted? What size, weight and material hammer will be used for this testing? How hard will the liner be struck? We recommend that this requirement be deleted.

RESPONSE: specification changed. See replacement paragraph in response to question 20, above.

23. Question: Can an alternative to the materials discussed in the specification be to allow alternative products as approved by the manufacturer for use in a complete system with the specific liner material?

RESPONSE: Awarded contractor can submit VE proposals for consideration. Bid as specified.

24. External chemical grouting – Type “ECG” (SECTION Q, page 28) does not appear on the Bid Schedule.

Question: How is it intended that this work be paid if needed?

RESPONSE: ECG repairs shall be deleted per amendment.

25. Technical Project Specifications - SECTION Q, Page 29, Item 7 discusses SC repairs and goes into extensive details on reinforcement. Please provide additional information such as bar sizes, spacing, anticipated quantity, etc RESPONSE: Replacement of reinforcing steel is not anticipated with the SC or Spalled Concrete repair. Any exposed rebar shall be cleaned and the repair area shall be repaired in accordance with the Technical Specification, Part 7, 7. Spalled Concrete & Exposed Rebar Repair-Type “SC”.

26. SECTION R SEWER CLEANING AND INSPECTION

Section 1. Cleaning and Preparation of the Sewer, b. describes cleaning as:

Interior surfaces of sewer pipes shall be cleaned by up to 3 passes of high-pressure water jetting (minimum 2,000 psi) or sawing to remove and flush out loose bricks, deposits of debris, roots, and sediment. The Contractor shall remove all debris including rocks, roots, gravel and similar coarse debris from the sewer, and all debris shall be properly disposed of at a permitted landfill. Debris shall not be flushed downstream into other sewers. All costs involved with disposal of debris will be the responsibility of the Contractor and will not be paid for separately.

e. describes “Heavy Cleaning as:

If the above described sewer cleaning efforts do not result in all debris being removed from the pipe, “Heavy Cleaning” may be required to remove remaining debris. Proposed “Heavy Cleaning” must be documented with photographs and estimates of quantities and time submitted by the Contractor and shall be approved by the District prior to performing this work. If the District agrees that the specified cleaning method was not effective in cleaning the sewer and that additional time and effort is required to clean the sewer, it shall be paid for at the unit bid price for “Heavy Cleaning”.

These two sections contradict section 16 of Trenchless Sewer Construction that reads:

(d) If the District agrees that the specified cleaning method was not effective in cleaning the sewer and additional time and effort is required to clean the sewer, the contractor will be paid for “Heavy Cleaning” at the unit bid price.

Which contradicts Section 4. Preparation of Surfaces, Subsection e. that reads:

The removal of grease, slime, chemical grouting residue, etc. may be accomplished by hydroblasting at a minimum pressure of 5,000 psi or sand blasting. Surfaces that are submerged by wastewater before repairs can be completed shall be recleaned. The Contractor shall make provisions to collect the bulk of the sediment and debris from cleansing operations, and shall remove it from the sewer together with existing debris, and dispose of it at a landfill suitable for disposal of the materials from the sewer. Removal of existing debris shall be accomplished without vibratory or high impact equipment. Rotary type tools will be allowed to loosen existing debris. The cost for removal and disposal of debris will be paid for under the pay item “Clean and Prepare Sewer” as applicable.

Please clarify which sewer cleaning specification is to be used. We do not recommend anything over 3,500 psi for water blasting.

RESPONSE: Page 8, subsection 16. d. is deleted per this amendment. Psi requirements deleted per updated specifications as shown below:

Part 7 Trenchless; Section P Spray Applied Liner, 4. Preparation of Surfaces; Item e, on page 19, delete and replace with the following:

e. The removal of grease, slime, chemical grouting residue, etc. may be accomplished by hydroblasting or sand blasting. Surfaces that are submerged by wastewater before repairs can be completed shall be recleaned. The Contractor shall make provisions to collect the bulk of the sediment and debris from cleansing operations, and shall remove it from the sewer together with existing debris, and dispose of it at a landfill suitable for disposal of the materials from the sewer. Removal of existing debris shall be accomplished without vibratory or high impact equipment. Rotary type tools will be allowed to loosen existing debris. The cost for removal and disposal of debris will be paid for under the pay item “Clean and Prepare Sewer” as applicable.

Part 7 Trenchless; Section R Sewer Cleaning and Inspection, 1. Cleaning and Preparation of Sewer, item b, on page 31, delete and replace with the following:

b. Interior surfaces of sewer pipes shall be cleaned by up to 3 passes of high-pressure water jetting or sawing to remove and flush out loose bricks, deposits of debris, roots, and sediment. The Contractor shall remove all debris including rocks, roots, gravel and similar coarse debris from the sewer, and all debris shall be properly disposed of at a permitted landfill. Debris shall not be flushed downstream into other sewers. All costs involved with disposal of debris will be the responsibility of the Contractor and will not be paid for separately.

Part 9 Miscellaneous; Section J Manhole Rehabilitation, h. Interior Manhole Rehabilitation , 1.) Manhole Cleaning and Preparation, Item b.), on page 46, delete and replace with the following:

b.) High-pressure water blasting shall be used to clean free all foreign material within the manhole.

Part 7 Trenchless; Section Q Miscellaneous Sewer Repairs, 7. Spalled Concrete & Exposed Rebar Repair – Type “SC”, b. Procedure, Item (4), on pages 30 and 31, delete and replace with the following:

(4.) The perimeter of the repair area will be chipped or sawcut to a minimum 1/2" depth being careful not to cut or damage any reinforcing steel. The entire repair area should be chipped until there are no offsets in the cavity, which would cause an abrupt change in the thickness of the repair material. Remove all deteriorated concrete, dirt, oil, grease and all bond inhibiting agents from the area by hydroblasting to obtain an aggregate-fractured surface and corrosion free reinforcing steel.

Part 7 Trenchless; Section Q Miscellaneous Sewer Repairs, 4. Void Repair – Type “VR”, b. Procedure, item (3.), on page 28, delete and replace with the following:

(3.) All void cavities must be cleaned to remove dirt, debris and contaminants by hydroblasting, sand blasting or other appropriate mechanical means to obtain an aggregate fractured surface.

27. Technical Project Specifications - Page 40, Item 6 discusses property owner notification Question: Will an electronic list of property owners and their addresses be provided by the utility to accommodate the letter notification process, or is this up to the Contractor to pull together?

RESPONSE: MSD to provide list of property owners to awarded contractor.

28. Technical Project Specifications - Page 41, Item 3 discusses MH work. We would recommend removal of steps, not replacement. Given the often corrosive environment and degradation that follows, steps pose a liability and are typically not replaced as alternative means should always be used when accessing a MH or structure.

Questions: Are we required to remove and reset cones as part of this work, or would the repair of the MH seal, grade adjustment, cone/wall joint, etc. only be triggered if cones are removed? We assume cone removal would also trigger pavement work, if cones aren’t to be removed, then is there a need to provide Superintendents paving experience? Is lining of the MH invert/bench intended as part of the work? If so, we would recommend this get paid as a separate line item than the per VF lining of the MH itself.

RESPONSE: Cones are not being replaced unless damaged beyond repair in which case replacement would be paid for under the “Changes” clause. Payment for bench and invert lining will be part of the manhole lining bid item. Also, see updated specification regarding steps below:

Part 9 Miscellaneous; Section J Manhole Rehabilitation; 3. Geopolymer Manhole Liner;

c. General; Item 1.), on page 41, delete and replace with the following:

1.) Installation of Geopolymer Liner shall consist of cleaning the entire manhole interior surface, and removal of existing steps; preparation (plugging/patching) of the manhole interior surface for lining including repair of frame seal, grade adjustment cone/wall joint, pipe seals and bench and invert as required to prepare the manhole for lining. The Contractor shall line the entire manhole interior surface with an approved geopolymer lining product.

29. Please confirm the Management Plan required is for a 30 month period.

RESPONSE: 30 month should be 24 month

30. The solicitation asks for 5 years of geopolymer experience in the rehabilitation of main trunk sewers for the Site Superintendent, Contract Quality Control System Manager, and the Installer. The use of geopolymer systems and methods for the rehabilitation of trunk sewers is relatively new. One of the two products specified and the one we intend to use, Quadex Geokrete, has only been used for this purpose for just over three years. We request that this experience requirement be reduced to 3 years for this reason.

RESPONSE: see revised specification:

Part 7 Trenchless Sewer Rehabilitation; Section P, Spray Applied Liner; 2. Spray-on Geopolymer Lining System; f. Installation of Liner; 1.) Requirements; d. Qualifications;

subparagraph 1. on pages 13 and 14 and subparagraph 4. on page 15 delete and replace with the following:

1. Documentation and verifiable references that the Installer has successfully installed the proposed geopolymer liner system in a minimum of 1,000 linear feet of large diameter (>36 inch) horizontal pipe and manholes in the United States and Canada and has been continually engaged in this type of work for a minimum of three (3) years. The information submitted shall include pipe dimensions, length of installation, size/type of flow control required to perform the Work, description of the actual work performed including installation method, name and telephone number of the pipe owner and date of installation. The stated experience requirements for licensed Contractor or Installer have to be projects which used approved liner manufacturers. All reference experience shall be for the projects completed within the United States and Canada and shall have used the same installation method, and geopolymer lining system proposed for the project.

The required experience shall include the following:

a. Contractor performing the lining of the sewer shall be licensed by the approved geopolymer lining manufacturers.

b. The licensed Contractor, or Installer, shall have experience in geopolymer lining of sewers including the following: circular and box shaped sewers and similar sizes as this project.

4. Submit documentation and verifiable references that the proposed geopolymer liner system has been successfully installed in a minimum of 10,000 linear feet of large diameter (>36 inch) horizontal pipe and manholes in the United States and Canada and that the proposed geopolymer liner system had been in place for a minimum of three (3) years. Contractor shall submit manufacturer experience information within one (1) week following award.

31. Please advise should it be acceptable to prepare composite designs for the box structures on the subject project? We have found that composite design, especially in the case of box structures, allows for the most economical use of the existing structure. Should composite design not be allowed, fully structural designs will require an increase in thickness significantly above the minimum thicknesses discussed in the specification, which may adversely affect system hydraulics.

RESPONSE: bid as specified. Awarded contractor may submit VE proposals for consideration.

32. Please advise what loadings need to be accounted for in designs? For example:

a) Geotechnical information on the soil such as soil density or soil elastic modulus (NOTE: the elastic modulus is not the same as the soil reaction modulus E’ found in ASTM F1216 which is typically used in association with the enhancement factor K which usually is assigned a value of 7).

b) Max water table (examples half way between top of pipe and ground, ground, provided 100-yr flood elevation, etc.)

c) AASHTO vehicular load rating (example HS-25) RESPONSE: Designer to consider loads and assumptions needed to provide a structurally sound liner for the fully deteriorated condition.

33. Please advise what failure methods need to be accounted for in the design? Will design need to account for the three common modes of underground failure, namely:

a) Buckling failure,

b) deflection/deformation and

c) flexure induced by the differential between horizontal and vertical forces.

RESPONSE: Designer to consider loads and assumptions needed to provide a structurally sound liner for the fully deteriorated condition.

34. Please advise if it is acceptable for calculations used in determination of the liner thickness to allow for cracking in the installed liner? We do not recommend this, but have observed it in other designs.

RESPONSE: No, not acceptable.

35. Under Section 01 15 00, “Temporary Construction Facilities”, Part 2.1 mentions furnishing a temporary field office trailer. Will a temporary field office trailer be required for this project?

RESPONSE: If it is specified, it is required

36. Under Section 01 15 00, “Temporary Construction Facilities”, Part 2.2 mentions furnish and installing temporary project and safety signs. Will these signs be required for this project?

RESPONSE: If it is specified, it is required

37. Under Section 01 15 00, “Temporary Construction Facilities”, Part 2.3 mentions furnish and installing temporary project safety fencing. Will the fence be required for this project?

RESPONSE: If it is specified, it is required per EM 385-1-1

38. Under the solicitation package, “Clauses incorporated by reference”, I see that FAR 52.219-8 (Utilization of Small Business Concerns) and FAR 52.219-9 (Small Business Subcontracting Plan) is noted.

What is the percentage requirements for the small business concerns?

RESPONSE: No percentages required. Follow requirements of these clauses readily found online.

39. Can you increase the maximum page requirements for the safety plan to 25 pages?

RESPONSE: The maximum page requirements for the safety plan has been increased to 20 pages.

40. Can you increase the maximum page requirement for the management plan to 25 pages?

RESPONSE: The maximum page requirement for the management plan has been increased to 25 pages.

41. The profile plan sheets notes “ECG” Repairs. The specifications details Type ECG Repairs.

However, the bid schedule sheet does not have Type ECG repairs noted. Which line item on the bid schedule shall the cost for ECG repairs be included?

RESPONSE: ECG repairs deleted per amendment.

42. The project description and the technical proposal mentions pavement repairs. I do not see on the plans and on the bid schedule as to where these pavement repairs are to be performed. Can you provide additional details/quantities and type of pavement repair (i.e. concrete, asphalt, or composite pavement)?

RESPONSE: No pavement repairs are anticipated, but may be required if the contractor damages manholes for access purposes for which repairs would be at the contractor’s expense.

43. With regard to past performance, will USACE St. Louis accept state and local municipality government projects or is it preferred to only submit federal past performance?

RESPONSE: Except that an RFP specifically states, “federal past performance accepted only”, (and this RFP does NOT state that), you may submit state and local municipality government projects as long as they show performance and magnitude of the project same or similar to the RFP requirement.

44. Due to the detailed information required and the complexity of the project we respectfully request that the page count increase from 60-pages to 150-pages.

RESPONSE: The page count increase has been set to 100 pages as shown below:

Subfactor a – Key Personnel Qualifications 10 (increase to 20) Subfactor b – Prime Contractor Similar Experience 15 (increase to 25) Subfactor c – Management Plan 15 (increase to 25) Subfactor d - Safety 10 (increase to 20) Past Performance 10 (no change)

45. Are there designated dump locations/facilities that have been predetermined for this project and if so where are these locations?

RESPONSE: No

46. What are the specific testing requirements for USACE as it pertains to the use of geopolymer liner?

RESPONSE: Testing requirements as specified in the Technical Project Specifications.

47. Will water be available for lining operations and if so are there specific hydrants that we will have access to? Where are these hydrants located?

RESPONSE: Contractor responsible for obtaining and supplying water necessary for the project.

48. Are there specific dates that the contractor will not be permitted to work?

RESPONSE: Proposed work outside of normal business hours, during weekends and/or during holidays shall be approved by the Contracting Officer.

49. What are the restrictions to day or nighttime operations? Will weekend hours be permitted? Please provide the hours of operation that we will be allowed to work.

RESPONSE: Proposed work outside of normal business hours, during weekends and/or during holidays shall be approved by the Contracting Officer.

50. Regarding the property between Barrett Brothers Park and Keinlen Ave – Junk Yard, will we have access to the sewer line in this area if it is necessary to conduct and open cut operation? Will the access be restricted in any way?

RESPONSE: The sewer is in an easement with working room. Contractor shall coordinate access with property owners.

51. Will USACE provide the flow data for dry and peak weather flows for the combined sewer to be rehabilitated?

RESPONSE: provided in amendment 0001

52. Is there historical and current CCTV video available of the sewer lines in question and will this be made available to the bidders for review prior to submission of Technical and Price proposals?

RESPONSE: provided in amendment 0001

53. Will USACE please provide a detail for lateral abandonment (Type LA Repair)?

RESPONSE: MSD does not have a detail for the LA repair. The Technical Speicifications outline how to plug the lateral to be abandoned. https://www.stlmsd.com/msd-work/construction/standard-construction-specs and https://www.stlmsd.com/msd-work/construction/standard-construction-specs/standard-detail-sheets

54. Will USACE please confirm the geopolymer thickness for manhole rehabilitation? The bid schedule references “01”.

RESPONSE: 1 inch; see amended bid schedule and revised specification below:

Part 9 – Miscellaneous; Section J Manhole Rehabilitation; 3. Geopolymer Manhole Liner; l. Measurement and Payment; 1.) on page 50, delete and replace with the following:

1.) Unit bid price for Pay Item “Manhole Rehabilitation” using a geopolymer lining 1 inch thick shall include total costs for furnishing all labor, materials, equipment, and all necessary incidentals needed to complete the work. The cost shall include any cleaning and preparation of the manhole for lining, the removal of steps, any patching and plugging necessary, lining the entire manhole interior surface with an approved geopolymer lining system, and all required testing. Measurement for payment shall be made per square foot of lining as measured from the lowest invert to the top of the geopolymer liner. Bypass pumping, as required, shall be included in the unit price for “Bypass Pumping”.

55. Will USACE permit a field office trailer onsite?

RESPONSE: See 01 15 00. Location as approved by the Contracting Officer.

56. Will USACE make the Excel “Rehabilitation Table” and “Manhole Rehabilitation Table” available to bidding contractors?

RESPONSE: provided per amendment

57. Will pre or post CCTV be allowed via hand held camera? There are certain sections of pipe within this project that can be difficult to evaluate via typical CCTV equipment.

RESPONSE: yes

58. Is a “reach” defined as a segment of pipe from manhole to manhole?

RESPONSE: Reach is generally defined from access point to access point.

59. Will post CCTV of a manhole to manhole section constitute a final CCTV inspection as the contractor moves from one segment to another?

RESPONSE: yes, for CCTV

60. We respectfully request due to the number of RFI questions for clarification and to produce a compliant technical and price proposal a 14-day time extension to the proposal date. Will USACE extend the response date to Thursday, April 25?

RESPONSE: see extended proposal due date provided in amendment

61) Attached are PDF documents for the submission of approval of an equal material – as the document “Approved Equal Material Substitution Proposal” explains RESPONSE: bid as specified. Awarded contractor may submit VE proposals for consideration.

62) What is the minimum amount of work to be let for each mobilization?

RESPONSE: See Part 1, paragraph 8 on page 4 of the Technical Project Specifications.

63) What is the anticipated minimum release in footage?

RESPONSE: Not applicable

64) What is the anticipated time frame to start working on the release?

RESPONSE: at NTP after award of contract.

65) How many separate mobilizations do you anticipate releasing throughout the contract?

RESPONSE: See Part 1, paragraph 8 on page 4 of the Technical Project Specifications.

66) If the engineer design for the geopolymer lining thicknesses vary from the 3 bid tab items (1 ½ , 2, 2 ½ inch) how will the pay amounts be determined?

RESPONSE: See Part 7, Section O, paragraph 15 a (1, page 6 of the Technical Project Specifications.

67) How was the 700’ of clean and prepare sewer footage arrived at?

RESPONSE: should be 7000 LF. See amended bid schedule.

68. Will the Owner be providing access to all manholes on the project?

69. Can the City provide as-builts for manholes to be rehabilitated?

RESPONSE: MSD does not have “as-builts” for the manholes. The sewers were built by the various sewer districts that existed prior to MSD’s creation in the 1950’s. Typical manhole construction would be similar to what is found in the standard detail sheets. https://www.stlmsd.com/msd-work/construction/standard-construction-specs/standard-detail-sheets

70. Can the City provide any flow data for the sewers?

RESPONSE: provided in amendment 0001

71. Can the City please provide CCTV and reports?

RESPONSE: provided in amendment 0001

72. Will a project trailer be required?

RESPONSE: See section 01 15 00 for trailer requirements

73. Currently the pay items are broken down into min thickness. Would the City Concider breaking down the pay items into diameter? This will help clarify how each diameter is to be paid.

RESPONSE: Bid as specified.

74. If the city does not breakdown the pay items by diameter, will it please clarify what diameters falls under each thickness?

RESPONSE: See Technical Project Specifications Part 7, Section O, paragraph 15, for lining payment.

OTHER CHANGES PER THIS AMENDMENT 2

-Delete the original bid schedule and use the attached Revised Bid Schedule.

-Rehab Tables Excel Sheet is incorporated via Amendment 2.

-FAR Clause 52.232-16 PROGRESS PAYMENTS is deleted per Amendment 2.

-FAR Clause 52.211-10 Alt I is revised to remove the 10 April 19 date. Notice to Proceed will be issued per request of the Construction Branch with concurrence and approval of the Contracting Officer.

-The following Drawings are incorporated via Amendment 2:

Drawing 10722-S2 -There are no videos or pictures available for this solicitation.

SECTION 00 10 00 - SOLICITATION

The following have been modified:

PARTS I & II

PART I - PROPOSAL SUBMISSION INSTRUCTIONS, CONDITIONS, NOTICE TO OFFERORS

SECTION 00100 INSTRUCTIONS, CONDITIONS, AND NOTICES TO OFFERORS

FULL AND OPEN LOWEST PRICED TECHNICALLY

ACCEPTABLE (LPTA)

1. GENERAL INFORMATION

This solicitation is for a lowest price technically acceptable, firm-fixed price contract for construction of Harlem Baden Package 8 located in the City of St. Louis and the Village of Hillsdale, Missouri. The magnitude of construction for this project is between $5M and $10M.

Work consists of rehabilitation of approximately 6,800 lineal feet of combined sewers, varying in size from 48” x 48” to 122” x 144”, utilizing trenchless methods, and the rehabilitation of approximately 500 lineal feet of manhole utilizing geopolymer liner methods in an area south of Natural Bridge Avenue between Kienlen and Clara Avenues within the City of St. Louis and the Village of Hillsdale. The work consists of furnishing all material, labor, tools, equipment and supervision necessary for the rehabilitation of combined sewers and related appurtenances utilizing trenchless methods; the rehabilitation of main trunk sewers, manholes, and service connections utilizing geopolymer liner methods; the cleaning and lining of pipe sewers and point repairs; and the removal and replacement of pavements and roadways.

Coordination with the Metropolitan St. Louis Sewer District may be required throughout the duration of construction, with approval of the St. Louis District.

2. REQUIRED REGISTRATIONS

Offerors must have and must maintain an active registration in the following databases:

System for Award Management (SAM): Offerors must have and must maintain an active registration in the SAM database at https://www.sam.gov/portal/public/SAM/ to be eligible for a Government contract award. If the offeror is a Joint Venture (JV), the JV entity must have valid SAM registration in the SAM database representing the JV as one business/firm/entity. If at the time of award an offeror is not actively and successfully registered in the SAM data base, the Government reserves the right to award to the next prospective offeror.

On-Line Representations and Certifications. Prospective Contractors shall complete electronic representations and certifications at https://www.sam.gov/portal/public/SAM/ in conjunction with required registration in the SAM.

3. DEFINITIONS

When the word ‘offeror’ is encountered throughout this Section 00100, it is intended to mean a company, teaming arrangement, or Joint Venture seeking to do business with the Government that submits a proposal in response to this solicitation.

A ‘proposal’ is documentation prepared by the offeror and submitted to the Government for evaluation purposes in response to this solicitation.

When the word ‘Government’ is encountered throughout this Section 00100, it is intended to mean the U.S.

Army Corps of Engineers St. Louis District (MVS).

4. SUBMISSION OF INQUIRIES:

Proposals for this solicitation will be accepted until the date and time indicated on Standard Form 1442.

Prospective offerors should submit inquiries related to this solicitation only by e-mail to:

E-MAIL ADDRESS: lisa.white@usace.army.mil

Include the solicitation number, and project title with any questions/clarifications. Written questions must be received by this office not later than 7 calendar days after the site visit. TELEPHONE INQUIRIES WILL

NOT BE ACCEPTED.

5. DIRECTIONS FOR SUBMITTING PROPOSALS

Offers must be placed in envelopes/packages, sealed and marked and addressed as follows:

MARK PACKAGES:

Solicitation Number: W912P919R0023 Offer Closing Date: 4/024/2019 Offer Closing Time: 1:00 pm Local St. Louis time

ADDRESS PACKAGES TO:

U.S. Army Corps of Engineers (USACE) St. Louis District, CEMVS-CT-X

Lisa White 1222 Spruce St – Room 4.207 St. Louis, MO 63103-2833

Additional Instructions Pertaining to Hand Carried Offers: Hand-carried offers must be delivered to 1222 Spruce St., Room 4.207, St. Louis, MO 63103-2833. Proposals must be properly marked package(s) and given to a member of the Contracting Division no later than the time specified above.

PROPOSALS SUBMITTED AFTER THE DATE AND TIME ESTABLISHED FOR SUBMISSION OF

PROPOSALS WILL NOT BE EVALUATED.

6. SITE VISIT

There is a site visit scheduled for 10:00 a.m. local time on March 21, 2019 at the Barrett Brothers Park ballfield parking lot near the intersection of St. Louis Avenue and Hamilton Avenue.

7. ELECTRONIC OFFERS

Electronic proposals, and their applicable modifications or cancellations, will not be accepted. However, proposals may be withdrawn in writing by letter or e-mail. Any written notice to withdraw an offer sent to this office must be received in the office designated in the Request for Proposal (RFP) for receipt of offers not later than the exact date and time set for receipt of proposals.

8. PROPOSALS SHALL BE SUBMITTED IN THE FOLLOWING FORMAT:

VOLUME 1 – Technical Proposal Submission Proposal Package Original Copies CD

1 4 1

FACTOR 1– Technical Approach:

Subfactor (a) – Key Personnel Qualifications Subfactor (b) – Prime Contractor Similar Experience Subfactor (c) – Management Plan Subfactor (d) – Safety

FACTOR 2 – Past Performance

Volume 1 shall also include the following:

• Letters of Commitment from Sub-Contractors (if applicable)

• Teaming Arrangements (if applicable)

• Joint Venture Agreements (if applicable)

VOLUME 2 – Price Proposal and Administrative Submission

Volume 2 shall also include the following:

Original Copies CD

1 0 1

• Signed Standard Form 1442 and all Amendments, signed and dated

• Section 00010 Bid Schedule

• SAM Representations and Certification

• Offeror’s e-mail address and cell phone number

• Name, Address, DUNS, CAGE Code, and TAX Identification Numbers of the

Contractor submitting the proposal

9. PROPOSAL SUBMISSION REQUIREMENTS AND INSTRUCTIONS

a. REQUIREMENT FOR SEPARATE T ECHNICAL AND PRICE PROPOSALS.

DO NOT MIX CONTENTS OF VOLUME 1 (Technical) AND VOLUME 2 (Price) IN THE SAME

BINDER.

(1) Each Offeror must submit a Technical Proposal and a Price Proposal. The Technical Proposal and the Price Proposal must be submitted as separate volumes. Both the Technical and Price Proposal shall be paginated (contain consecutive page numbers on each page).

(2) The outside cover of each separate volume (Vol 1 – Technical; Vol 2 – Price) must be clearly marked to indicate its contents and the identity of the Offeror. Additionally, identify the “original” Technical proposal and the “original” cost/price proposal on the outside cover.

(3) Both the Technical Proposal and the Price Proposal must be received by the closing date and time set for receipt of proposals.

(4) Pricing Schedule, Vol 2, shall be completed in full.

(5) Do not include any dollar amounts in the Technical Proposal that are taken from the Price Proposal.

(6) All information intended to be evaluated as part of the Technical Proposal MUST BE submitted within the Technical Proposal. Do not cross-reference material in the Price Proposal, or vice versa. Also, do not include links to websites in your proposal. Technical Proposals will not be provided to the price team and Price Proposals will not be provided to the technical team. Therefore, information submitted in the wrong volume could lead to the proposal being determined “unacceptable” if materially incomplete in any aspect.

(7) Do not attempt to modify the terms and conditions of the solicitation in either the technical or price proposal or add conditions or qualifications to your offer. Should the offeror include terms and conditions that conflict with the terms and conditions of the Solicitation, the offer may be determined "unacceptable" and thus ineligible for award. ANY QUESTIONS RELATED TO SPECIFIC TERMS AND CONDITIONS

CONTAINED WITHIN THE SOLICITATION SHOULD BE RESOLVED PRIOR TO SUBMISSION OF

THE OFFER. Notwithstanding the above, the offeror must clearly describe on the Proposal Cover Sheet submitted with the Price Proposal any modifications to the contractual and/or technical terms and conditions of the solicitation contained in the Offer.

(8) FAILURE to submit required documents or FAILURE to properly complete documents may result in rejection of the offer without further evaluation. Therefore, offerors are urged to follow instructions carefully and to speak with the Contracting Officer if the offeror does not understand any part of the Solicitation.

b. DISCUSSIONS.

The Government intends to evaluate proposals and award a contract without discussions with offerors.

Therefore, the offeror’s initial proposal should contain the offeror’s best terms from a cost or price and technical standpoint. The Government reserves the right to conduct discussions if the Contracting Officer later determines them to be necessary

c. GENERAL INSTRUCTIONS.

(1) Submit only the documents specifically required in this section. Do not submit excess information; do not include audio-visual materials, electronic media, etc.

(2) Use only 8 ½ by 11 inch paper or A4 paper for hard copy submissions, unless another paper size is specifically authorized elsewhere in this section for a particular submission. Do not use fold-outs (e.g., 11” x 14” or 11” x 17” sheets). Do not use a font size smaller than 10, an unusual font style such as script, or condensed print for any submission. All page margins must be at least one inch wide, but may include headers and footers. All pages must be numbered.

(3) The preferred method for assembling your proposal is to use three-ring binders; however, the use of pressboard or other report covers with compression or other type fasteners is acceptable. Do not use spring clamps or exceed the recommended capacity of the fastener or binder.