Department of Aviation Airport Office Building

8500 Peňa Boulevard Denver, Colorado

(303) 342-2200 www.flydenver.com

May 19, 2017

2017 Manhole Rehabilitation

CONTRACT NO. 201733451

ADDENDUM NUMBER ONE This Addendum Number One supersedes and/or supplements all portions of the Contract Documents with which it conflicts. Bidders must acknowledge receipt of this addendum on Page 28 of the Revised Bid Forms. __________________________________ Irene Chhor Project Manager

D E N V E R I N T E R N A T I O N A L A I R P O R T

2017 MANHOLE REHABILITATION

CONTRACT NO. 201733451

ADDENDUM NUMBER ONE

Scope of this Addendum Addendum Number One includes modifications to the following Contract Documents issued May 10, 2017. These modifications are deemed necessary by the City and County of Denver. PART TWO, VOL. 3 - DRAWINGS The drawings outlined herein are being re-issued for bidding purposes as noted below. Sheet No. CP-1 Is re-issued in its entirety, see attached Sheet No. CP-2 Is re-issued in its entirety, see attached Sheet No. SP-1 Is re-issued in its entirety, see attached Sheet No. SP-2 Is re-issued in its entirety, see attached Sheet No. SP-3 Is re-issued in its entirety, see attached Sheet No. SP-4 Is re-issued in its entirety, see attached The total number of pages (including cover sheet) contained in this Addendum Number One is eight (8).

* * * * * * *

End of Addendum Number One.

NO PARKING

B33

37-8-9

A319-320 37-7 E70-75W

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PP-01

2NTS

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TAXIWAY M9

TAXIWAY EC

TA

XIW

AY L

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RIV

ER S

TR

EE

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REHABILITATED

SAG MH TO BE

SEE NOTE 4

TRENCH DRAIN

OUTER DIW

MARKING

SAFETY PROFILE

AIRCRAFT PARKING

GREEN TAXILANE

B-33AFUEL PIT

B-33BFUEL PIT

TYPICAL AIRCRAFT GATE WORK TYPICAL TAXIWAY OR TAXILANE WORK

TABLE 1 - TAXIWAY SAFETY AREA AND OBJECT FREE AREA

TYPICAL TAXIWAY OR TAXILANE WORK DETAIL NOTES

TYPICAL AIRCRAFT GATE WORK DETAIL NOTES

34

129.5' 129.5'

85.5' 85.5'

107'

160'

107'

160'

107'

160'

107'

160'

AD

G I

V O

FA (259 F

T)

AD

G I

V O

FA (259 F

T)

ADG V OFA (320 FT) ADG V OFA (320 FT)

ADG V OFA (320 FT)ADG V OFA (320 FT)

ADG V SA (214 FT)

ADG V SA (214 FT)

AD

G I

V S

A (171 F

T)

AD

G I

V S

A (171F

T)

ADG V SA (214 FT)

ADG V SA (214 FT)

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PAVEMENTS TO AIRCRAFT OPERATIONS.

ACTIVITY IMMEDIATELY, UPON NOTIFICATION BY DEN, IN ORDER TO RE-OPEN AIRFIELD

THOSE CITED ABOVE. THE CONTRACTOR SHALL BE PREPARED TO DE-MOBILIZE ALL CONSTRUCTION

AND OVERSEE THAT THE WORK TAKES PLACE IN COMPLIANCE WITH DEN AOA STANDARDS AND

DEN MAY PROVIDE, AT THEIR DISCRETION, AN ESCORT TO PROVIDE ACCESS TO THESE AREAS5.

CONSIDER THIS WORK AS INCIDENTAL TO THE SAG MANHOLE REHABILITATION ITEM.

EDGE-LIGHT COVERS, BLANK SIGN FACES, ETC.), AS DIRECTED BY THE DEN PM, AND SHALL

ALL REQUIRED CLOSURE ELEMENTS (LOW-PROFILE BARRICADES, PAVEMENT MARKINGS,

REQUIRE CLOSURE OF THE AFFECTED TAXIWAY/TAXILANE. THE CONTRACTOR SHALL INSTALL

THE DEN PM, IN ADVANCE OF COMMENCING WITH CONSTRUCTION ACTIVITIES, AND WILL

WORK WHICH IS REQUIRED TO TAKE PLACE WITHIN THE OFA SHALL BE COORDINATED WITH4.

AIRFIELD PAVEMENT, PRIOR TO COMMENCING WITH WORK ADJACENT TO THESE PAVEMENTS.

COORDINATE WITH THE DEN PM TO IDENTIFY THE SPECIFIC SA AND OFA BOUNDARIES FOR ALL

TYPICAL AND FOR THE CONTRACTOR'S REFERENCE ONLY. THE CONTRACTOR SHALL

AREA WIDTHS (SAW) AND OBJECT FREE AREA WIDTHS SHOW IN TABLE 1 OF THIS SHEET ARE

THE AOA FOR THE VARIOUS AFFECTED TAXIWAYS, TAXILANES, AND AIRCRAFT APRONS. SAFETY

SAFETY AREA (SA) AND OBJECT FREE AREA (OFA) CLEARANCE WIDTHS VARY THROUGHOUT3.

OPERATIONS.

TAXIWAY/TAXILANE OBJECT FREE AREA (OFA), WHILE THE PAVEMENT IS OPEN TO AIRCRAFT

TO AIRFIELD PAVEMENTS. NO CONSTRUCTION ACTIVITY MAY TAKE PLACE WITHIN THE

CIRCULAR (AC) 150/5370-2 (CURRENT EDITION) FOR WORK WHICH IS TO TAKE PLACE ADJACENT

THE CONTRACTOR SHALL COMPLY WITH ALL REQUIREMENTS OUTLINED IN FAA ADVISORY2.

FOR WORK WHICH IS TO TAKE PLACE WITHIN THE DEN AOA.

THE CONTRACTOR SHALL COMPLY WITH ALL GENERAL NOTES AND SAFETY NOTES (SHEET G-2)1.

STRUCTURE LIDS, UPON COMPLETION OF EACH WORK SHIFT.

CONTRACTOR SHALL COVER ALL EXCAVATIONS, TRENCHES, OPEN PITS, AND REPLACE ALL5.

SQUARE, IN ACCORDANCE WITH SHEET CP-3 DETAIL 2.

CONSTRUCTION DELINEATOR CONES AROUND THE WORK IMPACT AREA, NOT TO EXCEED 10-FOOT

CONTRACTOR SHALL INSTALL A SECURE PERIMETER OF LOW-PROFILE BARRICADES AND4.

THAT THE DEN PM CAN COORDINATE WITH THE APPROPRIATE AIRLINE TO SCHEDULE THE WORK.

PERFORMANCE OF THE WORK ADJACENT TO AIRCRAFT GATES ON AIRCRAFT RAMPS, IN ORDER

DICTATED BY THE DEN PM. CONTRACTOR SHALL COORDINATE WITH THE DEN PM IN ADVANCE OF

REQUIRE CLOSURE OF THE AIRCRAFT GATE. NIGHT WORK MAY BE REQUIRED FOR THIS WORK, AS

WORK INSIDE OF, OR WITHIN 20-FEET OF, THE AIRCRAFT PARKING SAFETY PROFILE MARKING WILL3.

LIMITS.

TYPICAL TAXILANE CLOSURE DETAILS FOR PERTINENT REQUIREMENTS FOR WORK WITHIN THE A

AREA (OFA), WHILE THE PAVEMENT IS OPEN TO AIRCRAFT OPERATIONS. SEE SHEET CP-1 FOR THE

PAVEMENTS. NO CONSTRUCTION ACTIVITY MAY TAKE PLACE WITHIN THE TAXILANE OBJECT FREE

(AC) 150/5370-2 (CURRENT EDITION) FOR WORK WHICH IS TO TAKE PLACE ON AIRFIELD RAMP

THE CONTRACTOR SHALL COMPLY WITH ALL REQUIREMENTS OUTLINED IN FAA ADVISORY CIRCULAR2.

FOR WORK WHICH IS TO TAKE PLACE WITHIN THE DEN AOA.

THE CONTRACTOR SHALL COMPLY WITH ALL GENERAL NOTES AND SAFETY NOTES (SHEET G-2)1.

SAG-05669

AS SHOWN

CP-2

SM05-D-CP002.dgn

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M MONAHAN

TAXIWAY WC

SEE NOTE 3

TYPICAL INFIELD AREA WORK NOTES

35

160'

160'

SEE TABLE 1 ON SHEET CP-1 FOR THE APPLICABLE TAXIWAY SAFETY AREA AND OBJECT FREE AREA LIMITS.5.

IN ACCORDANCE WITH FAA AC 150/5370-2F, SECTION 221.C(4).

OPEN TRENCHES OR EXCAVATIONS ARE NOT PERMITTED WITHIN THE SAFETY AREA OF ADJACENT AIRFIELD PAVEMENTS. REMEDIATION SHALL TAKE PLACE

CONTRACTOR SHALL COVER ALL EXCAVATIONS, TRENCHES, OPEN PITS, AND REPLACE ALL STRUCTURE LIDS, UPON COMPLETION OF EACH WORK SHIFT.4.

NOT TO EXCEED 10-FOOT SQUARE, INCLUDING LIGHTED CONSTRUCTION DELINEATOR CONES FOR NIGHTTIME VISIBILITY.

CONTRACTOR SHALL INSTALL A SECURE PERIMETER OF CONSTRUCTION DELINEATOR CONE PER DETAIL 5 ON SHEET CP-3 AROUND THE WORK IMPACT AREA,3.

REQUIREMENTS FOR WORK WITHIN THE OFA LIMITS.

(OFA), WHILE THE PAVEMENT IS OPEN TO AIRCRAFT OPERATIONS. SEE SHEET CP-1 FOR THE TYPICAL TAXIWAY OR TAXILANE CLOSURE DETAIL FOR PERTINENT

IS TO TAKE PLACE ADJACENT TO AIRFIELD PAVEMENTS. NO CONSTRUCTION ACTIVITY MAY TAKE PLACE WITHIN THE TAXIWAY/TAXILANE OBJECT FREE AREA

THE CONTRACTOR SHALL COMPLY WITH ALL REQUIREMENTS OUTLINED IN FAA ADVISORY CIRCULAR (AC) 150/5370-2 (CURRENT EDITION) FOR WORK WHICH2.

THE CONTRACTOR SHALL COMPLY WITH ALL GENERAL NOTES AND SAFETY NOTES (SHEET G-2) FOR WORK WHICH IS TO TAKE PLACE WITHIN THE DEN AOA.1.

 

ADG V OFA (320 FT)

ADG V SA (214 FT)

ADG V OFA (320 FT)

ADG V SA (214 FT)

DENVER

INTERNATIONAL

AIRPORT

CITY & COUNTY

of DENVER

ISSUE RECORD

NO. BY PURPOSE DATE CKD

SCALE

DATE

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DESIGN CONTRACT NO.

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1NTS

---

TYPICAL INFIELD AREA WORK

107'

107'

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SUMMARY 1

MANHOLE

SURFACE RESTORATION, SEE

FOR OBJECT FREE AREA - CONCRETE COLLAR UNIMPROVED6.

SPECIFICATION.

SURFACE. CONCRETE REPLACED AIRSIDE IS PER AIRFIELD

A CONCRETE SURFACE, BUT NOT AIRFIELD CONCRETE PANEL

EXISTING SURFACE CONDITION "CONCRETE" LOCATED AIRSIDE IS5.

FOR COMPLETE MANHOLE REHABILITATION.

SEALS ARE NOT REQUIRED WHEN THE MANHOLE IS IDENTIFIED

DRILLING AND GROUTING PRECAST JOINTS. INTERIOR FRAME

OF THE CHIMNEY, CORBEL, WALL, BENCH, AND TROUGH, AND

COMPLETE MANHOLE REHABILITATION INCLUDES REHABILITATION4.

ARE APPROXIMATE.

QUANTITIES WERE CALCULATED BASED ON THE FIELD DATA AND3.

ADJUSTMENT TO THE UNIT PRICING IS DUE TO THE CONTRACTOR.

CAN BE DELETED OR ALTERED AT DEN’S DISCRETION AND NOCOMPLETION UNDER SEPARATE CONTRACT AND THE QUANTITIES

THE MANHOLES IDENTIFIED AS “GARDI” ARE SUBJECT TO2.

THE MANHOLE INSPECTION SHEET SHALL TAKE PRECEDENCE.

SHEET AND THE INDIVIDUAL MANHOLE INSPECTION SHEETS,

DISCREPANCY ON THE WORK BETWEEN THE MANHOLE SUMMARY

TO BE PERFORMED AT EACH MANHOLE. IN THE EVENT OF A

ONLY AND PROVIDE ADDITIONAL INFORMATION ON THE WORK

MANHOLE SUMMARY SHEETS ARE PROVIDED FOR REFERENCE1.

NOTES:

2

DT-7

29

DENVER

INTERNATIONAL

AIRPORT

CITY & COUNTY

of DENVER

ISSUE RECORD

NO. BY PURPOSE DATE CKD

SCALE

DATE

DRAWN BY:

CHECKED BY:

FAA AIP NO:

WORK BREAKDOWN NO.

DESIGN CONTRACT NO.

CONST. CONTRACT NO.

VOLUME NO.

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SUMMARY 2

MANHOLE

SM05-D-SP002_2017.dgn

2

DT-7

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DENVER

INTERNATIONAL

AIRPORT

CITY & COUNTY

of DENVER

ISSUE RECORD

NO. BY PURPOSE DATE CKD

SCALE

DATE

DRAWN BY:

CHECKED BY:

FAA AIP NO:

WORK BREAKDOWN NO.

DESIGN CONTRACT NO.

CONST. CONTRACT NO.

VOLUME NO.

SHEET TITLE

SHEET NO.

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SURFACE RESTORATION, SEE

FOR OBJECT FREE AREA - CONCRETE COLLAR UNIMPROVED6.

SPECIFICATION.

SURFACE. CONCRETE REPLACED AIRSIDE IS PER AIRFIELD

A CONCRETE SURFACE, BUT NOT AIRFIELD CONCRETE PANEL

EXISTING SURFACE CONDITION "CONCRETE" LOCATED AIRSIDE IS5.

FOR COMPLETE MANHOLE REHABILITATION.

SEALS ARE NOT REQUIRED WHEN THE MANHOLE IS IDENTIFIED

DRILLING AND GROUTING PRECAST JOINTS. INTERIOR FRAME

OF THE CHIMNEY, CORBEL, WALL, BENCH, AND TROUGH, AND

COMPLETE MANHOLE REHABILITATION INCLUDES REHABILITATION4.

ARE APPROXIMATE.

QUANTITIES WERE CALCULATED BASED ON THE FIELD DATA AND3.

ADJUSTMENT TO THE UNIT PRICING IS DUE TO THE CONTRACTOR.

CAN BE DELETED OR ALTERED AT DEN’S DISCRETION AND NOCOMPLETION UNDER SEPARATE CONTRACT AND THE QUANTITIES

THE MANHOLES IDENTIFIED AS “GARDI” ARE SUBJECT TO2.

THE MANHOLE INSPECTION SHEET SHALL TAKE PRECEDENCE.

SHEET AND THE INDIVIDUAL MANHOLE INSPECTION SHEETS,

DISCREPANCY ON THE WORK BETWEEN THE MANHOLE SUMMARY

TO BE PERFORMED AT EACH MANHOLE. IN THE EVENT OF A

ONLY AND PROVIDE ADDITIONAL INFORMATION ON THE WORK

MANHOLE SUMMARY SHEETS ARE PROVIDED FOR REFERENCE1.

NOTES:

M MONAHAN

SP-3

L HAUGEN

272

SUMMARY 3

MANHOLE

SM05-D-SP003_2017.dgn

31

DENVER

INTERNATIONAL

AIRPORT

CITY & COUNTY

of DENVER

ISSUE RECORD

NO. BY PURPOSE DATE CKD

SCALE

DATE

DRAWN BY:

CHECKED BY:

FAA AIP NO:

WORK BREAKDOWN NO.

DESIGN CONTRACT NO.

CONST. CONTRACT NO.

VOLUME NO.

SHEET TITLE

SHEET NO.

CADD FILE NO.

LASE

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201415658-TO12

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SURFACE RESTORATION, SEE

FOR OBJECT FREE AREA - CONCRETE COLLAR UNIMPROVED6.

SPECIFICATION.

SURFACE. CONCRETE REPLACED AIRSIDE IS PER AIRFIELD

A CONCRETE SURFACE, BUT NOT AIRFIELD CONCRETE PANEL

EXISTING SURFACE CONDITION "CONCRETE" LOCATED AIRSIDE IS5.

FOR COMPLETE MANHOLE REHABILITATION.

SEALS ARE NOT REQUIRED WHEN THE MANHOLE IS IDENTIFIED

DRILLING AND GROUTING PRECAST JOINTS. INTERIOR FRAME

OF THE CHIMNEY, CORBEL, WALL, BENCH, AND TROUGH, AND

COMPLETE MANHOLE REHABILITATION INCLUDES REHABILITATION4.

ARE APPROXIMATE.

QUANTITIES WERE CALCULATED BASED ON THE FIELD DATA AND3.

ADJUSTMENT TO THE UNIT PRICING IS DUE TO THE CONTRACTOR.

CAN BE DELETED OR ALTERED AT DEN’S DISCRETION AND NOCOMPLETION UNDER SEPARATE CONTRACT AND THE QUANTITIES

THE MANHOLES IDENTIFIED AS “GARDI” ARE SUBJECT TO2.

THE MANHOLE INSPECTION SHEET SHALL TAKE PRECEDENCE.

SHEET AND THE INDIVIDUAL MANHOLE INSPECTION SHEETS,

DISCREPANCY ON THE WORK BETWEEN THE MANHOLE SUMMARY

TO BE PERFORMED AT EACH MANHOLE. IN THE EVENT OF A

ONLY AND PROVIDE ADDITIONAL INFORMATION ON THE WORK

MANHOLE SUMMARY SHEETS ARE PROVIDED FOR REFERENCE1.

NOTES:

2

DT-7

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SUMMARY 4

MANHOLE

SM05-D-SP004_2017.dgn

SURFACE RESTORATION, SEE

FOR OBJECT FREE AREA - CONCRETE COLLAR UNIMPROVED6.

SPECIFICATION.

SURFACE. CONCRETE REPLACED AIRSIDE IS PER AIRFIELD

A CONCRETE SURFACE, BUT NOT AIRFIELD CONCRETE PANEL

EXISTING SURFACE CONDITION "CONCRETE" LOCATED AIRSIDE IS5.

FOR COMPLETE MANHOLE REHABILITATION.

SEALS ARE NOT REQUIRED WHEN THE MANHOLE IS IDENTIFIED

DRILLING AND GROUTING PRECAST JOINTS. INTERIOR FRAME

OF THE CHIMNEY, CORBEL, WALL, BENCH, AND TROUGH, AND

COMPLETE MANHOLE REHABILITATION INCLUDES REHABILITATION4.

ARE APPROXIMATE.

QUANTITIES WERE CALCULATED BASED ON THE FIELD DATA AND3.

ADJUSTMENT TO THE UNIT PRICING IS DUE TO THE CONTRACTOR.

CAN BE DELETED OR ALTERED AT DEN’S DISCRETION AND NOCOMPLETION UNDER SEPARATE CONTRACT AND THE QUANTITIES

THE MANHOLES IDENTIFIED AS “GARDI” ARE SUBJECT TO2.

THE MANHOLE INSPECTION SHEET SHALL TAKE PRECEDENCE.

SHEET AND THE INDIVIDUAL MANHOLE INSPECTION SHEETS,

DISCREPANCY ON THE WORK BETWEEN THE MANHOLE SUMMARY

TO BE PERFORMED AT EACH MANHOLE. IN THE EVENT OF A

ONLY AND PROVIDE ADDITIONAL INFORMATION ON THE WORK

MANHOLE SUMMARY SHEETS ARE PROVIDED FOR REFERENCE1.

NOTES:

2

DT-7

32

DENVER

INTERNATIONAL

AIRPORT

CITY & COUNTY

of DENVER

ISSUE RECORD

NO. BY PURPOSE DATE CKD

SCALE

DATE

DRAWN BY:

CHECKED BY:

FAA AIP NO:

WORK BREAKDOWN NO.

DESIGN CONTRACT NO.

CONST. CONTRACT NO.

VOLUME NO.

SHEET TITLE

SHEET NO.

CADD FILE NO.

LASE

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