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Home My WebLink AboutCO 02CHANGE ORDER # 2 . AIRPORT: Renton Municipal Airport DATE: 8 702 -13 LOCATION: Renton, Washington GRANT #: 3- 53- 0055 -024 CONTRACTOR: ICON Materials This change order was prepared In accordance with FAA Program Guidance Letter 12 -03. A price analysis was prepared and It Is recommended that the FAA accept the analysis as evidence of cost reasonableness. You are requested to perform the following described work upon receipt of an approved copy of this document or as directed by the Engineer: Item Description Cost reduction for Bituminous Base Course. Adjust unit price for bid items 2 -49, 3 -37, 4-49, 1 and 5-44. Subtotal State Sales Tax (9.5 %) This Change Order Total Previous Change Order Amount Original Contract Amount Revised Contract Total Recommended by., Approved by Accepted by Accepted by Unit Unit Price Quantity Amount Ton ($- 3.34) 10,542 ($- 35,210.00) er, Reid ton, Inc. i�, Ity nton or, ICON rials Aviation Administration ($- 35,210.00) ($- 3,344.95) . ($- 38,554.95) ($- 20,325.94) $5,460,424.21 $5,401,543.32 Date: 5-ate: Date: Date: ; 3 HIM'I23ApO01007 Renton N✓ B & SignageVSouth Taxiway Construction \Change Orders \CO 2.docx CHANGE ORDER # 2 AIP PROJECT NO. 3 -53- 0055 -024 AIRPORT Renton Municipal Airport LOCATION Renton, WA JUSTIFICATION FOR CHANGE This justification for change was prepared in accordance with FAA Program Guidance. Letter 12 -03 1. Brief description of the proposed contract change(s) and locations(s). This change order consists of the following: 1. Bituminous Base Course of P -401 as part of the taxiway pavement section is revised from PG 70 -22 grade asphalt binder to PG 64 -22 grade asphalt binder. 2. Reason(s) for the change(g) (Continue on reverse if necessary). On June 13, 2013, ICON submitted a Value Engineering Proposal (VEP) to utilize PG 64 -22 grade asphalt binder for the 8 -inch lift of P -401 Bituminous Base Course pavement (3 -inch lift on shoulders) in lieu of PG 70 -22 binder. Replacing•the PG 70- 22 binder with the PG 64 -22 on the lower base lifts will provide an equivalent strength bituminous base course for the taxiway pavement section at a lower cost. The VEP by ICON for this proposal results in a total savings of $70,419.00. Based on the allowable 50% split of the cost savings, this portion of the VEP results is a credit to the Owner of $35,210.00. 3. Justifications for unit prices or total cost: Justification was prepared.in accordance with FAA program guidance letter 12 -03. 4. The sponsor's share of this cost is available from: Port Funds 5. If this is a supplemental agreement involving more than $2,000, is the cost estimate based on the latest wage rate decision? Yes No NA X 6. Has consent of surety been obtained? Yes Not Necessary X 7. Will this change affect the insurance coverage? Yes No X 8. If yes, will the policies be extended? Yes No X 9. Has this Change Order been discussed with FAA Officials? Yes X No When 06/25/13. With Whom Peter Doyle N.:1D0CQ3AFaMW07 Renton 7W B & Signagel'south Taxiway Construction \Change Orders \CO 2.docx DESIGN DIRECTIVE DD Numbers 4 Owner:: Renton Municipal: Au Dort . Contract No. 3 -53- 0055.24 Contractor: ICON Materials Engineer: Itetd. Ivlidd leton,. inc. Engineer s File No.: 2320,10, 07.00 Project. Taxiway 'R Systopt'Aoltebilitaiion - -South.Portien Recnnst„mtint, S.pet>ificat on Section:: P -40.1 Para;: 2,1 Drawing Ref: C2.1 -C2.4 Detail: The exisdttg Contract i oeuments specifies use of PG 70 -22 grade asphalt binder,for both'.P -401 base course and surface courses of pavetnent A value engineering proposal: was submitted by -ICON: for the use of PG 64 -22 grad e..asphalt biadcr for P =401 base course pavement In lieu of PG 70.22. The value engineerng proposal identifies still utilising the PG 7042, asphalt binder an the P401. surface course. lifts. The value engineering. proposal savings to the Airport is identified as 535,2:10 (�3 ;34/ton): The aft of P_G 6442' on P401 base courses, while maintaining the use of PG 70.22 on P-401 surface courses, been Outdated,. and determined to meet the original design intent and is .acceptable: Please proceed with this portion of the value engineering proposal. A change order will'be processed to execute tho;proposetsavings. As ICON has identified and `submitted, the P064 -22 P -401 mix being utilized for the. South. project base lifts will be the same mix that:hae beers utilized for "the.previous North Taxiway B project. Based on the last mix placed on the North Taxiway. B ' prolect;(1„ot'*6 on 712/1:3), meeting test re,quirements and being within action limits, a new test strip for use of this sate tntx on the South Taxiway B Pm }ect will not be required. As-you have been, please continue to monitor the mix.and.4ust as necessary to keep test parameters within action limits. •A new-test strip for the PG 70 -22 P401: mix design is still required per specification P- 401 -3.4. Foraceeptannco sampling: and testing, separate lots :will be established for PG 64.22 base courses and PG 70.22 surface courses, Tfie lot sizes as. 66med'in 40.1.5..•1 shalt apply separately for base courses and surface courses. PG 64 -22 base courses and.PG 7642ssurface'eoursesmaterials shall not be combined within a single lot. The value e'. engineering; proposal further identified an additional savings proposal for the use of 15 %RAP within. the .mix. The use of RAP is NOT approved for use,. Date: No Cost Change Order _ X Change' Order with Cost Adjustment Anticipated. - $3.34 / ton cost reduction for use of PG 64 -22 for Bituminous Base Course (bid quantity = 10,530 tons). Approx. total cost, reduction, to the Owner = $35;210. Response• fro ._ David dent Date Returned:. 6 P.lpa hi docl fotttteleonstruction \izonelrequest -for interpretation.doc ec: Owner Reed alddleton Renton Municipal AirpdTP— City of Renton Taxiway B System Rehabilitation -South Portion Reconstruction ' Project No. 011 -20131 AIP # 3-53- 0055 -024 Value Engineering Proposal O: Reid Middleton / City of Renton CON Materials (ICON) pro poses to utilize PG 64 -22 grade asphalt binder for the 8 inch P-401 base course pavement (3 ches on shoulders) in lieu of PG 70.22 as currently designed. In ICON's experience, even at more heavily loaded/ more active taxiways, the FAA Mountain Region default binder grade has been PG 64 -22. We understand that there is concern with surface deformation on this project due to show, turning B -737 wheel loads and agree that it is prudent that the final ving lift(s) (surface course) incorporate PG 70 -22, but there is an opportunity to replace the binder in the lower base course ifts with a non - polymerized binder grade with no measurable impact on the final quality of the pavement structure. AA Mountain Region standards also recognize that the use of recycled asphalt pavement (RAP) is of equal qua lity when used in base lift applications. ICON,proposes to, use up to I S% RAP (1/2 of the FAA maximum of 30 °fo RAP) in the base arse paving as an added alternate value engineering cost savings. BY: David Gent P.E. DATE:6113/2013 ' ARCHITECT /ENGINEER: Reid- Mlddleton – Technical Representative -- O: Kurt Add icott, PE – Director of Aviation Services We propose to credit the project for the above change in a lump sum amount of (detailed attached): ` for P-401 Base Course lifts with PG64 -22 replacing PG70 -22 We have attached hereto Cost Estimate Detail Sheets Nos. – ICON Cost Savings Estimate Spreadsheet (attached)_. This VE Proposal amount covers all direct and indirect costs related to this change and to the effect of the change on the project. All P-401 specifications remain in effect other than a binder grade change (and alternate RAP usage) on the P-401 Base Course lifts as shown in the Typical project Section detail (Plan Sheets C1.5 and C2.1- 2.4). BY: David Gent DATE: 6!13/2013 — Oriqinal Contract Sum: $5,4601424.21 Previous Total whax : $0.00 Original Sum Sales Tax: $518,740.30 This Change (Add): $ Total Ori inai Sum Pius Tax: $5.'979,164.51 This Change Sales Tax 9.5% Previous Additions whax : $0.00 Total This Change Plus Tax; Previous Deductions (w /tax) $0.00 New Total w/taz BY: DATE: City of Renton Technical .-Representative hereby accepts the foregoing proposal and authorizes the performance of the changes specified. This Instrument constitutes a Change Order to the Contract oniv when authorizing signature is affixed. AUTHORIZED BY: FE Reid Middleton Date: Project Representative For -City of ton Date: Owner's Representative ICON Value Engineering Proposal Worksheet City of Renton/ Renton Municipal Airport Taxiway B System Rehab. - South Portion Reconstruction City Project No. 001 -2013 / AIP No. 3 -53 -0055 -024 Proposal: Change binder for P -401 Base Course paving from PG 70 -22 to PG 64 -22. Additionally, allow up to 15% RAP in the.P -401 Base Course paving . ogsy rrvovsai - ru 9% -cc cxcnanse P-401 Base Course Paving -Total Bid Tons = 10,530 tons Binder rate currently used for P -401= 5.35% Tons of binder needed for P -401 Base Course = 563 tons Binder cost delta, PG -70 -22 vs. PG 64 -22 = $125.00 per ton Total savings replacing PG 70 -22 with PG 64 -22 = $70,419 Value Engineering Saving at SO% R Value Engineering Saving/ Ton at 50% v A P-401-Base Course Paving t P-401 a Course Paving- Total Bid Tons = 10,530 to Binder rate c ently used for P -401= Tons of binder nee d for P -401 Base Course = 563 tons Binder Replaced at 15% use. 15% 66 tons *(RAP AC Content at 4.2% average) Binder value - PG 64 -22 at current ra ** _ $515 per ton ** confidential ICON binder rate thro J 2013 Total Binder Savings at 15% RAP $34,165 Less RAP Tonnage value $12.00 per ton $34,954 Total VE sav�at RAP 1 5,211 Value veering Saving at SO%,a V . e Engineering Saving/ Ton at 5096 UT P -304 to P -301 with Recycle 1 of 1 6/13/2013