A.07.24_-_W912DW18R0017_Amendment_No._0003_YTC_Fire_Station.pdf

PN55199

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

Request for Proposal (RFP) W912DW18R0017, Yakima Training Center Fire Station, Yakima, Washington Amendment No. 0003

Please see continuation page for the Amendment details

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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

16C. DATE SIGNED

BY 08-Aug-2018

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 W912DW18R0017

X 9B. DATED (SEE ITEM 11)

11-Jul-2018

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 is extended, X 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

08-Aug-2018

CODE

USA ENGINEER DISTRICT, SEATTLE

ATTN: CENWS-CT

4735 EAST MARGINAL WAY SOUTH, BLDG. 1202

SEATTLE WA 98134-2388

W912DW 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DW18R0017

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 NO. 0003

1. This Amendment No. 0003 provides for the following:

a. Revised Sections 00 73 00-A, 31 00 00, and 32 11 23.

b. Revised Drawings IN101, IN102, IN103, and I703.

2. The proposal submittal time and date of 1:00:00 PM LOCAL TIME (Pacific Time), 13 August 2018 remains the same.

3. The attached revised sections are to be replaced in their entirety. Specifications changes are generally identified, for convenience, either by strikeout for deletions, and double underlining of text for additions or a single dark line in the margin. All portions of the revised sections shall apply whether or not changes have been indicated.

4. NOTICE TO OFFERORS: Offerors must acknowledge receipt of all amendments including this amendment by number and date on SF1442.

5. All other terms and conditions remain unchanged.

Encl:

Section 00 73 00-A (Revised) Section 31 00 00 (Revised) Section 32 11 23 (Revised) Drawing IN101 (Revised) Drawing IN102 (Revised) Drawing IN103 (Revised) Drawing IN703 (Revised)

(End of Summary of Changes)

FY17 YTC Fire Station 17008

Yakima Training Center, Yakima, WA W912DW18R0017

00 73 00-A - 1 R0003

ATTACHMENT 00 73 00-A

INDEX OF DRAWINGS

DRAWING RECORD FILE NO. 24s/730-10-01, DATED: 04 JUNE 2018

PAGE# SHEET# SHEET TITLE REVISION DATE

GENERAL

1 G-001 TITLE, LOCATION AND VICINITY MAPS

2 G-002 DRAWING INDEX

GEOTECHNICAL

3 B-101 LOCATIONS OF EXPLORATION

4 B-102 EXCAVATION PLAN

5 B-301 EXPLORATION LOGS

6 B-302 TEST PITS

CIVIL

7 C-001 LEGEND, ABBREVIATIONS & GENERAL NOTES

8 C-002 ACCESS AND HAUL ROUTE

9 CX101 EXISTING SITE PLAN

10 CD101 DEMOLITION PLAN 1

11 CD102 DEMOLITION PLAN 2

12 CD103 BUILDING 346 DEMOLITION PLAN 1 – BID OPTION

13 CD104 BUILDING 346 DEMOLITION PLAN 2 – BID OPTION

14 CS101 GENERAL SITE PLAN

15 CS102 SITE PLAN 1

16 CS103 SITE PLAN 2

17 CP101 JOINT LAYOUT OVERALL PLAN

18 CP102 JOINT LAYOUT PLAN 1 - NORTH DRIVEWAY

19 CP103 JOINT LAYOUT PLAN 2 - SOUTH DRIVEWAY

20 CP104 JOINT LAYOUT PLAN 3 - SOUTH DRIVEWAY 2

21 CP105 JOINT ELEVATION PLAN 1 - NORTH DRIVEWAY

22 CP106 JOINT ELEVATION PLAN 2 - SOUTH DRIVEWAY

23 CP107 JOINT ELEVATION PLAN 3 - SOUTH DRIVEWAY 2

24 CG101 GRADING PLAN 1

25 CG102 GRADING PLAN 2

26 CU101 UTILITY PLAN 1

27 CU102 UTILITY PLAN 2

28 CU103 STORM WATER PLAN 1

29 CU104 STORM WATER PLAN 2

30 C-301 SITE SECTION VIEWS

31 C-302 SANITARY SEWER PROFILE - LINE SS-1

32 C-303 SANITARY SEWER PROFILE - LINE SS-2

33 C-304 STORMWATER PROFILE - LINE STRM-1 - STA 0+00 TO 2+20

34 C-305 STORMWATER PROFILE - LINE STRM-1 - STA 2+20 TO 4+40

35 C-306 STORMWATER PROFILE - LINE STRM-1 - STA 4+40 TO 6+94

36 C-307 STORMWATER PROFILE - LINE STRM-2 - STA 0+00 TO 1+40

00 73 00-A - 2 R0003

PAGE# SHEET# SHEET TITLE REVISION DATE

37 C-308 STORMWATER PROFILE - LINE STRM-2 - STA 1+40 TO 2+65

38 C-501 DETAILS 1 - SECTIONS

39 C-502 DETAILS 2 - SIDEWALK SECTIONS AND JOINT DETAILS

40 C-503 DETAILS 3 - PAVEMENT JOINT DETAILS

42 C-505 DETAILS 5 - PAVEMENT AND SLAB REINFORCEMENT

DETAILS

43 C-506 DETAILS 6 - UTILITY 1

44 C-507 DETAILS 7 - UTILITY 2

45 C-508 DETAILS 8 - UTILITY 3

46 C-509 DETAILS 9 - UTILITY 4

47 C-510 DETAILS 10 - UTILITY 5

48 C-511 DETAILS 11 - SINAGE DETAILS

49 C-512 DETAILS 12 - MISCELLANEOUS DETAILS 1

LANDSCAPE

50 L-001 LANDSCAPE LEGEND, ABBREVIATIONS AND GENERAL

NOTES

51 LS101 LANDSCAPE PLAN 1

52 LS102 LANDSCAPE PLAN 2

53 L-501 LANDSCAPE DETAILS 1

STRUCTURAL

54 S-001 GENERAL STRUCTURAL NOTES

55 S-002 GENERAL STRUCTURAL NOTES II

56 S-101 PARTIAL FOUNDATION PLAN - ZONE A

57 S-102 PARTIAL FOUNDATION PLAN - ZONE B

58 S-103 PARTIAL FOUNDATION PLAN - ZONE C

59 S-111 PARTIAL ROOF FRAMING PLAN - ZONE A

60 S-112 PARTIAL ROOF FRAMING PLAN - ZONE B

61 S-113 PARTIAL ROOF FRAMING PLAN - ZONE C

62 S-121 DUMPSTER ENCLOSURE - FOUNDATION PLAN

63 S-201 EXT ELEVATIONS – CONTROL JTS

64 S-301 FOUNDATION SECTIONS

65 S-302 ADMIN/DORM - ROOF FRAMING SECTIONS

66 S-303 APPARATUS BAY WALL SECTIONS 1

67 S-304 APPARATUS BAY WALL SECTIONS 2

68 S-305 ENTRANCE AND MISC FRAMING SECTIONS

69 S-401 ENLARGED FOUNDATION PLANS

70 S-501 TYPICAL FOUNDATION DETAILS

71 S-502 TYPICAL CMU DETAILS

72 S-503 TYPICAL STEEL DETAILS

73 S-701 WIND LOAD DIAGRAM

ARCHITECTURAL

74 A-001 ABBREVIATIONS, SYMBOLS, AND GENERAL NOTES

75 A-002 LIFE SAFETY SUMMARY

76 A-003 OVERALL LIFE SAFETY PLAN

00 73 00-A - 3 R0003

PAGE# SHEET# SHEET TITLE REVISION DATE

77 A-004 ENLARGED LIFE SAFETY PLAN - ZONE A

78 A-005 ENLARGED LIFE SAFETY PLAN - ZONE B

79 A-006 ENLARGED LIFE SAFETY PLAN - ZONE C

80 A-007 AIR BARRIER FIRST FLOOR PLAN

81 A-008 AIR BARRIER BUILDING SECTIONS

82 A-009 AIR BARRIER OPENING DETAILS

83 A-101 OVERALL FIRST FLOOR PLAN

84 A-102 PARTIAL FIRST FLOOR PLAN - ZONE A

85 A-103 PARTIAL FIRST FLOOR PLAN - ZONE B

86 A-104 PARTIAL FIRST FLOOR PLAN - ZONE C

87 A-111 OVERALL REFLECTED CEILING PLAN

88 A-112 PARTIAL RCP - ZONE A

89 A-113 PARTIAL RCP - ZONE B

90 A-114 PARTIAL RCP - ZONE C

91 A-121 OVERALL ROOF PLAN

92 A-160 DUMPSTER ENCLOSURE - PLANS, ELEVATIONS AND

SECTIONS

93 A-201 OVERALL BUILDING ELEVATIONS

94 A-202 ENLARGED BUILDING ELEVATIONS

95 A-203 ENLARGED BUILDING ELEVATIONS

96 A-204 APPARATUS BAY BUILDING ELEVATIONS 1

97 A-205 APPARATUS BAY BUILDING ELEVATIONS 2

98 A-301 BUILDING CROSS SECTION I

99 A-302 BUILDING CROSS SECTION II

100 A-310 WALL SECTIONS I

101 A-311 WALL SECTIONS II

102 A-312 WALL SECTIONS III

103 A-313 WALL SECTIONS IV

104 A-401 ENLARGED PLANS I

105 A-402 ENLARGED PLANS II

106 A-403 ENLARGED PLANS III

107 A-404 ENLARGED PLANS IV

108 A-405 ENLARGED PLANS V

109 A-501 EXTERIOR DETAILS I

110 A-502 EXTERIOR DETAILS II

111 A-503 EXTERIOR DETAILS III

112 A-504 EXTERIOR DETAILS IV

113 A-505 ROOF DETAILS I

114 A-506 ROOF DETAILS II

115 A-507 CURTAINWALL DETAILS

116 A-508 INTERIOR DETAILS I

117 A-509 INTERIOR DETAILS II

118 A-510 EXTERIOR DOOR DETAILS

119 A-511 INTERIOR DOOR DETAILS

00 73 00-A - 4 R0003

PAGE# SHEET# SHEET TITLE REVISION DATE

120 A-512 WINDOW DETAILS

121 A-513 LOUVER DETAILS

122 A-515 CEILING DETAILS I

123 A-601 EXTERIOR WALL AND ROOF TYPES

124 A-602 INTERIOR WALL TYPES

125 A-603 DOOR SCHEDULE

126 A-604 WINDOW, LOUVER, AND EXTERIOR FINISH SCHEDULE

127 A-901 EXTERIOR PERSPECTIVE VIEWS

128 A-902 EXTERIOR PERSPECTIVE VIEWS

129 A-960 DUMPSTER ENCLOSURE - ISOMETRIC VIEWS

INTERIORS

130 IF101 OVERALL FIRST FLOOR FURNITURE AND EQUIPMENT PLAN

131 IF102 FIRST FLOOR FURNITURE AND EQUIPMENT PLAN - ZONE A

132 IF103 FIRST FLOOR FURNITURE AND EQUIPMENT PLAN - ZONE B

133 IF104 FIRST FLOOR FURNITURE AND EQUIPMENT PLAN - ZONE C

134 IN101 FIRST FLOOR ELEMENTS FLOOR PLAN - ZONE A R0003 08 AUG 2018

135 IN102 FIRST FLOOR ELEMENTS FLOOR PLAN - ZONE B R0003 08 AUG 2018

136 IN103 FIRST FLOOR ELEMENTS FLOOR PLAN - ZONE C R0003 08 AUG 2018

137 IN201 INTERIOR ELEVATIONS

138 IN202 INTERIOR ELEVATIONS

139 IN203 INTERIOR ELEVATIONS

140 IN204 INTERIOR ELEVATIONS

141 IN401 ENLARGED RESTROOM PLANS

142 IN402 ENLARGED RESTROOM PLANS

143 IN501 RESTROOM DETAILS

144 IN502 CASEWORK DETAILS

145 IN503 BATHROOM DETAILS

146 IN504 INTERIOR DETAILS

147 IN601 FINISH SCHEDULE AND LEGEND

148 IN701 FIRST FLOOR FINISH PLAN - ZONE A

149 IN702 FIRST FLOOR FINISH PLAN - ZONE B

150 IN703 FIRST FLOOR FINISH PLAN - ZONE C R0003 08 AUG 2018

151 IN801 FIRST FLOOR SIGNAGE PLAN - ZONE A

152 IN802 FIRST FLOOR SIGNAGE PLAN - ZONE B

153 IN803 FIRST FLOOR SIGNAGE PLAN - ZONE C

154 IN810 SIGNAGE DETAILS

155 IN811 SIGNAGE DETAILS

FIRE PROTECTION

156 F-001 FIRE PROTECTION LEGEND AND ABBREVIATIONS

157 FA001 FIRE ALARM LEGEND AND ABBREVIATIONS

158 FA101 FIRE ALARM PLAN - ZONE A

159 FA102 FIRE ALARM PLAN - ZONE B

160 FA103 FIRE ALARM PLAN - ZONE C

161 FA501 FIRE ALARM DETAILS I

00 73 00-A - 5 R0003

PAGE# SHEET# SHEET TITLE REVISION DATE

162 FA502 FIRE ALARM DETAILS II

163 FA503 FIRE ALARM DETAILS III

164 FA601 FIRE ALARM MATRIX

165 FX101 FIRE PROTECTION PLAN - ZONE A

166 FX102 FIRE PROTECTION PLAN - ZONE B

167 FX103 FIRE PROTECTION PLAN - ZONE C

168 FX301 FIRE PROTECTION SECTIONS

169 FX501 FIRE PROTECTION DETAILS

PLUMBING

170 P-001 PLUMBING LEGEND & ABBREVIATIONS

171 P-101 OVERALL SANITARY PLUMBING FLOOR PLAN

172 P-102 SANITARY PLUMBING PLAN - ZONE A

173 P-103 SANITARY PLUMBING PLAN - ZONE B

174 P-104 SANITARY PLUMBING PLAN - ZONE C

175 P-111 OVERALL DOMESTIC PLUMBING PLAN

176 P-112 DOMESTIC PLUMBING PLAN - ZONE A

177 P-113 DOMESTIC PLUMBING PLAN - ZONE B

178 P-114 DOMESTIC PLUMBING PLAN -ZONE C

179 P-122 NATURAL GAS & COMPRESSED AIR PLAN - ZONE A

180 P-401 PLUMBING ENLARGED PLANS

181 P-402 ENLARGED PLUMBING PLANS

182 P-501 PLUMBING DETAILS

183 P-502 PLUMBING DETAILS

184 P-503 PLUMBING DETAILS

185 P-601 PLUMBING SCHEDULES

186 P-901 PLUMBING DWV ISOMETRIC DIAGRAM

187 P-902 PLUMBING DOM WATER ISOMETRIC DIAGRAM

MECHANICAL

188 M-001 HVAC LEGEND & ABBREVIATIONS

189 M-101 OVERALL HVAC FLOOR PLAN

190 M-102 HVAC FLOOR PLAN - ZONE A

191 M-103 HVAC FLOOR PLAN - ZONE B

192 M-104 HVAC FLOOR PLAN - ZONE C

193 M-113 HVAC PIPING FLOOR PLAN - ZONE B

194 M-114 HVAC PIPING FLOOR PLAN - ZONE C

195 M-123 HVAC ROOF PLAN - ZONE B

196 M-124 HVAC ROOF PLAN - ZONE C

197 M-501 HVAC DETAILS I

198 M-502 HVAC DETAILS II

199 M-503 HVAC DETAILS III

200 M-504 HVAC DETAILS IV

201 M-505 HVAC DETAILS V

202 M-601 HVAC SCHEDULES

203 M-602 HVAC SCHEDULES

00 73 00-A - 6 R0003

PAGE# SHEET# SHEET TITLE REVISION DATE

204 M-603 HVAC SCHEDULES

205 M-610 HVAC CONTROLS LEGEND

206 M-611 HVAC CONTROLS I

207 M-612 HVAC CONTROLS II

208 M-613 HVAC CONTROLS III

209 M-614 VRF SCHEMATIC

ELECTRICAL

210 E-001 ELECTRICAL LEGEND AND ABBREVIATIONS

211 ED101 DEMOLITION PLAN 1

212 ED102 DEMOLITION PLAN – BID OPTION

213 ES100 OVERALL SITE PLAN

214 ES101 SITE PLAN 1

215 ES102 SITE PLAN 2

216 E-101 OVERALL ELECTRICAL KEYPLAN

217 E-102 LIGHTING PLAN - ZONE A

218 E-103 LIGHTING PLAN - ZONE B1

219 E-104 LIGHTING PLAN - ZONE B2

220 E-105 LIGHTING PLAN - ZONE C1

221 E-106 LIGHTING PLAN - ZONE C2

222 E-121 POWER PLAN - ZONE A

223 E-122 POWER PLAN - ZONE B1

224 E-123 POWER PLAN - ZONE B2

225 E-124 POWER PLAN - ZONE C1

226 E-125 POWER PLAN - ZONE C2

227 E-141 MECHANICAL POWER PLAN - ZONE A

228 E-142 MECHANICAL POWER PLAN - ZONE B1

229 E-143 MECHANICAL POWER PLAN - ZONE B2

230 E-144 MECHANICAL POWER PLAN - ZONE C1

231 E-145 MECHANICAL POWER PLAN - ZONE C2

232 E-146 ROOF POWER PLAN - ROOF ZONE A

233 E-147 ROOF POWER PLAN - ROOF ZONE B & C

234 E-161 LIGHTNING PROTECTION PLAN 1

235 E-162 LIGHTNING PROTECTION PLAN 2

236 E-401 ENLARGED FLOOR PLANS

237 E-402 FOUR-FOLD DOOR CONTROLS FLOOR PLAN

238 E-501 LIGHT FIXTURE SCHEDULE AND DETAILS

239 E-502 LIGHTING FIXTURE DETAILS 2

240 E-503 CONTROL DETAILS

241 E-504 ELECTRICAL SYSTEM GROUNDING DETAILS

242 E-505 EXTERIOR DETAILS

243 E-506 GENERATOR DETAILS

244 E-507 LIGHT POLE DETAILS

245 E-508 POWER RISER DETAILS

246 E-509 VAULT AND TRANSFORMER DETAILS

00 73 00-A - 7 R0003

PAGE# SHEET# SHEET TITLE REVISION DATE

247 E-511 LIGHTNING PROTECTION DETAILS

248 E-601 POWER RISER DIAGRAM

249 E-602 PANEL SCHEDULES 1

250 E-603 PANEL SCHEDULES 2

251 E-604 PANEL SCHEDULES 3

252 E-605 PANEL SCHEDULES 4

253 E-606 PANEL SCHEDULES 5

254 E-607 PANEL SCHEDULES 6

255 E-608 PANEL SCHEDULES 7

256 E-610 FOUR-FOLD DOOR CONTROLS

257 E-611 FOUR-FOLD DOOR CONTROLS 2

TELECOMMUNICATIONS

258 T-001 TELECOMMUNICATIONS LEGEND AND ABBREVIATIONS

259 TD100 OVERALL DEMOLITION PLAN

260 TD501 EXISTING BUTTERFLY DIAGRAM

261 TD502 BUTTERFLY DIAGRAM

262 TS100 OVERALL SITE PLAN

263 TS101 SITE PLAN 1

264 TS102 SITE PLAN 2

265 TS103 SITE PLAN 3

266 T-101 TELECOMMUNICATIONS KEYPLAN

267 T-102 TELECOMMUNICATIONS FLOOR PLAN - ZONE A

268 T-103 TELECOMMUNICATIONS FLOOR PLAN - ZONE B1

269 T-104 TELECOMMUNICATIONS FLOOR PLAN - ZONE B2

270 T-105 TELECOMMUNICATIONS FLOOR PLAN - AREA C1

271 T-106 TELECOMMUNICATIONS FLOOR PLAN - ZONE C2

272 T-121 TELECOMMUNICATIONS - CABLE TRAY FLOOR PLAN - ZONE

A

273 T-122 TELECOMMUNICATIONS - CABLE TRAY FLOOR PLAN- ZONE

B1

274 T-123 TELECOMMUNICATIONS - CABLE TRAY FLOOR PLAN- ZONE

B2

275 T-124 TELECOMMUNICATIONS - CABLE TRAY FLOOR PLAN - ZONE

C1

276 T-125 TELECOMMUNICATIONS - CABLE TRAY FLOOR PLAN - ZONE

C2

277 T-401 TELECOMMUNICATIONS - ENLARGED

TELCOMMUNICATIONS ROOM

278 T-402 TELECOMMUNICATIONS - ENLARGED CATV ROOM

279 T-501 TELECOMMUNICATIONS - DETAILS 1

280 T-502 TELECOMMUNICATIONS - DETAILS 2

281 T-503 TELECOMMUNICATIONS - DETAILS 3

282 T-504 TELECOMMUNICATIONS - DETAILS 4

283 T-601 TELECOMMUNICATIONS DIAGRAM-1

284 T-602 TELECOMMUNICATIONS DIAGRAM-2

FY18 YTC Fire Station 17008 Yakima Training Center, WA W912DW18R0017

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 00 00

EARTHWORK

08/08

PART 1 GENERAL

1.1 CRITERIA FOR BIDDING

1.2 REFERENCES

1.3 DEFINITIONS

1.3.1 Satisfactory Materials

1.3.2 Unsatisfactory Materials

1.3.3 Cohesionless and Cohesive Materials

1.3.4 Degree of Compaction

1.3.5 Topsoil

1.3.6 Hard/Unyielding Materials

1.3.7 Rock

1.3.8 Unstable Material

1.3.9 Select Granular Material

1.3.9.1 General Requirements

1.3.10 Initial Backfill Material

1.4 SYSTEM DESCRIPTION

1.4.1 Classification of Excavation

1.4.2 Dewatering Work Plan

1.5 SUBMITTALS

PART 2 PRODUCTS

2.1 REQUIREMENTS FOR OFFSITE SOILS

2.2 BURIED WARNING AND IDENTIFICATION TAPE

2.2.1 Warning Tape for Metallic Piping

2.2.2 Detectable Warning Tape for Non-Metallic Piping

2.3 DETECTION WIRE FOR NON-METALLIC PIPING

2.4 MATERIAL FOR RIP-RAP

2.4.1 Bedding Material

2.4.2 Rock

2.5 CAPILLARY WATER BARRIER

PART 3 EXECUTION

3.1 STRIPPING OF TOPSOIL

3.2 GENERAL EXCAVATION

3.2.1 Ditches, Gutters, and Channel Changes

3.2.2 Drainage Structures

3.2.3 Drainage

3.2.4 Dewatering

3.2.5 Trench Excavation Requirements

3.2.5.1 Bottom Preparation

3.2.5.2 Removal of Unyielding Material

3.2.5.3 Removal of Unstable Material

3.2.5.4 Excavation for Appurtenances

SECTION 31 00 00 Page 1 R0003

3.2.5.5 Jacking, Boring, and Tunneling

3.2.6 Underground Utilities

3.2.7 Excavation for Structures

3.2.8 Excavation for Pavements

3.3 SELECTION OF BORROW MATERIAL

3.4 OPENING AND DRAINAGE OF EXCAVATION AND BORROW PITS

3.5 SHORING

3.5.1 General Requirements

3.6 GEOTECHNICAL ENGINEER

3.7 GRADING AREAS

3.8 FINAL GRADE OF SURFACES TO SUPPORT CONCRETE

3.9 GROUND SURFACE PREPARATION

3.9.1 General Requirements

3.9.2 Pavement Subgrade

3.10 UTILIZATION OF EXCAVATED MATERIALS

3.11 BURIED TAPE AND DETECTION WIRE

3.11.1 Buried Warning and Identification Tape

3.11.2 Buried Detection Wire

3.12 BACKFILLING AND COMPACTION

3.12.1 General Requirements

3.12.2 Structure Backfill

3.12.3 Pavement Subgrade Backfill

3.12.4 Backfill Adjacent to Structures

3.12.5 Trench Backfill

3.12.5.1 Replacement of Unyielding Material

3.12.5.2 Replacement of Unstable Material

3.12.5.3 Bedding and Initial Backfill

3.12.5.4 Final Backfill

3.12.6 Backfill for Appurtenances

3.13 SPECIAL REQUIREMENTS

3.13.1 Gas Distribution

3.13.2 Water Lines

3.13.3 Heat Distribution System

3.13.4 Electrical Distribution System

3.13.5 Rip-Rap Construction

3.13.5.1 Bedding Placement

3.13.5.2 Stone Placement

3.14 PAVEMENT AND FOUNDATION SUBGRADE PREPARATION

3.14.1 Proof Rolling

3.14.2 Construction

3.14.3 Compaction

3.14.3.1 Subgrade for Pavements and Structures

3.14.3.2 Subgrade for Shoulders

3.15 SHOULDER CONSTRUCTION

3.16 FINISHING

3.16.1 Subgrade and Embankments

3.16.2 Capillary Water Barrier

3.16.3 Grading Around Structures

3.17 PLACING TOPSOIL

3.18 TESTING

3.18.1 Fill and Backfill Material Gradation

3.18.2 In-Place Densities

3.18.3 Check Tests on In-Place Densities

3.18.4 Optimum Moisture and Laboratory Maximum Density

3.18.5 Tolerance Tests for Subgrades

3.18.6 Displacement of Sewers

3.19 DISPOSITION OF SURPLUS MATERIAL

-- End of Section Table of Contents --

SECTION 31 00 00 Page 2

SECTION 31 00 00 Page 3

SECTION 31 00 00

EARTHWORK

08/08

PART 1 GENERAL

1.1 CRITERIA FOR BIDDING

Base bids on the following criteria:

a. Surface elevations are as indicated.

b. Pipes or other artificial obstructions, except those indicated, will not be encountered.

c. Ground water elevations indicated by the boring and test pit logs were those existing at the time subsurface investigations were made and do not necessarily represent ground water elevation at the time of construction.

d. Material character is indicated by the boring and test pit logs.

e. Hard/Unyielding materials consisting of cobbles and boulders will be encountered at various depth as indicated on the boring and test pit logs. Heavier equipment such as hydraulic excavators with ripper teeth may be required when encountering cemented layers including caliche.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C600 (2010) Installation of Ductile-Iron Water Mains and Their Appurtenances

ASTM INTERNATIONAL (ASTM)

ASTM C117 (2013) Standard Test Method for Materials Finer than 75-um (No. 200) Sieve in Mineral Aggregates by Washing

ASTM C136/C136M (2014) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM D1140 (2000; R 2006) Amount of Material in Soils Finer than the No. 200 (75-micrometer) Sieve

ASTM D1556 (2007) Density and Unit Weight of Soil in Place by the Sand-Cone Method

ASTM D1557 (2012; E 2015) Standard Test Methods for

SECTION 31 00 00 Page 4

Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3) (2700 kN-m/m3)

ASTM D2167 (2015) Standard Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method

ASTM D2487 (2011) Soils for Engineering Purposes (Unified Soil Classification System)

ASTM D422 (1963; R 2007; E 2014; E 2014) Standard Test Method for Particle-Size Analysis of Soils

ASTM D4318 (2017) Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

ASTM D6938 (2017) Standard Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)

ASTM D698 (2012; E 2014; E 2015) Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/cu. ft. (600 kN-m/cu. m.))

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA 600/4-79/020 (1983) Methods for Chemical Analysis of Water and Wastes

EPA SW-846.3-3 (1999, Third Edition, Update III-A) Test Methods for Evaluating Solid Waste:

Physical/Chemical Methods

1.3 DEFINITIONS

1.3.1 Satisfactory Materials

Satisfactory materials comprise any materials classified by ASTM D2487 as GW, GP, GM, GP-GM, GW-GM, GC, GP-GC, GM-GC, SW, SP, SW-SM, and SP-SM.

Satisfactory materials for grading and backfill under footings comprise stones less than 3 inches, and for fill material for pavements which comprise stones less than 2 inches in any dimension.

1.3.2 Unsatisfactory Materials

Materials which do not comply with the requirements for satisfactory materials are unsatisfactory. Unsatisfactory materials also include man-made fills; trash; refuse; backfills from previous construction; and material classified as satisfactory which contains root and other organic matter or frozen material. Notify the Contracting Officer when encountering any contaminated materials.

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1.3.3 Cohesionless and Cohesive Materials

Cohesionless materials include materials classified in ASTM D2487 as GW, GP, SW, and SP. Cohesive materials include materials classified as GC, SC, ML, CL, MH, and CH. Materials classified as GM and SM will be identified as cohesionless only when the fines are nonplastic. Perform testing, required for classifying materials, in accordance with ASTM D4318, ASTM C136 ASTM C136/C136M, ASTM D422, and ASTM D1140.

1.3.4 Degree of Compaction

Degree of compaction required is expressed as a percentage of the maximum density obtained by the test procedure presented in ASTM D1557 abbreviated as a percent of laboratory maximum density. If more than 30 percent by weight is retained on and above the 3/4 inch sieve, notify the Contracting Officer of the need for a test section to determine the number of compaction coverages and equipment type.

1.3.5 Topsoil

Material suitable for topsoils is defined as: Natural, friable soil representative of productive, well-drained soils in the area, free of subsoil, stumps, rocks larger than one inch diameter, brush, weeds, toxic substances, and other material detrimental to plant growth. Amend topsoil pH range to obtain a pH of 5.5 to 7.

1.3.6 Hard/Unyielding Materials

Hard/Unyielding materials comprise weathered rock, dense consolidated deposits, caliche, or conglomerate materials which are not included in the definition of "rock" with stones greater than 2 inch in any dimension, whichever is smaller. These materials usually require the use of heavy excavation equipment, ripper teeth, or jack hammers for removal.

1.3.7 Rock

Solid homogeneous interlocking crystalline material with firmly cemented, laminated, or foliated masses or conglomerate deposits, neither of which can be removed without systematic drilling and blasting, drilling and the use of expansion jacks or feather wedges, or the use of backhoe-mounted pneumatic hole punchers or rock breakers; also large boulders, buried masonry, or concrete other than pavement exceeding 1/2 cubic yard in volume. Removal of hard material will not be considered rock excavation because of intermittent drilling and blasting that is performed merely to increase production.

1.3.8 Unstable Material

Unstable materials are too wet to properly support the utility pipe, conduit, or appurtenant structure.

1.3.9 Select Granular Material

1.3.9.1 General Requirements

Select granular material consist of materials classified as GW,GP,SW,or SP by ASTM D2487 where indicated. The liquid limit of such material must not exceed 35 percent when tested in accordance with ASTM D4318. The plasticity index must not be greater than 12 percent when tested in

SECTION 31 00 00 Page 6 accordance with ASTM D4318, and not more than 35 percent by weight may be finer than No. 200 sieve when tested in accordance with ASTM D1140.

1.3.10 Initial Backfill Material

Initial backfill consists of select granular material or satisfactory materials free from rocks 2 inches or larger in any dimension or free from rocks of such size as recommended by the pipe manufacturer, whichever is smaller. When the pipe is coated or wrapped for corrosion protection, free the initial backfill material of stones larger than 1 inch in any dimension or as recommended by the pipe manufacturer, whichever is smaller.

1.4 SYSTEM DESCRIPTION

1.4.1 Classification of Excavation

No consideration will be given to the nature of the materials, and all excavation will be designated as unclassified excavation.

1.4.2 Dewatering Work Plan

Submit procedures for accomplishing dewatering work.

1.5 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Shoring; G Dewatering Work Plan; G,DO

SD-03 Product Data

Utilization of Excavated Materials; G,DO

Opening of any Excavation or Borrow Pit

SD-06 Test Reports

Testing

Borrow Site Testing

SD-07 Certificates

Testing

PART 2 PRODUCTS

2.1 REQUIREMENTS FOR OFFSITE SOILS

Test offsite soils brought in for use as backfill for Total Petroleum Hydrocarbons (TPH), Benzene, Toluene, Ethyl Benzene, and Xylene (BTEX) and full Toxicity Characteristic Leaching Procedure (TCLP) including

SECTION 31 00 00 Page 7 ignitability, corrosivity and reactivity. Backfill shall contain a maximum of 100 parts per million (ppm) of total petroleum hydrocarbons (TPH) and a maximum of 10 ppm of the sum of Benzene, Toluene, Ethyl Benzene, and Xylene (BTEX) and shall pass the TCPL test. Determine TPH concentrations by using EPA 600/4-79/020 Method 418.1. Determine BTEX concentrations by using EPA SW-846.3-3 Method 5030/8020. Perform TCLP in accordance with EPA SW-846.3-3 Method 1311. Provide Borrow Site Testing for TPH, BTEX and TCLP from a composite sample of material from the borrow site, with at least one test from each borrow site. Do not bring material onsite until tests have been approved by the Contracting Officer.

2.2 BURIED WARNING AND IDENTIFICATION TAPE

Provide polyethylene plasticmetallic core or metallic-faced, acid- and alkali-resistant, polyethylene plastic warning tape manufactured specifically for warning and identification of buried utility lines.

Provide tape on rolls, 3 inches minimum width, color coded as specified below for the intended utility with warning and identification imprinted in bold black letters continuously over the entire tape length. Warning and identification to read, "CAUTION, BURIED (intended service) LINE BELOW" or similar wording. Provide permanent color and printing, unaffected by moisture or soil. Before burying the lines and identification tape, the Contracting Officer's Representative or the USACE Quality Assurance Representative must verify.

Warning Tape Color Codes

Red: Electric Yellow: Gas, Oil; Dangerous Materials Orange: Telephone and Other Communications Blue: Water Systems Green: Sewer Systems

2.2.1 Warning Tape for Metallic Piping

Provide acid and alkali-resistant polyethylene plastic tape conforming to the width, color, and printing requirements specified above, with a minimum thickness of 0.003 inch and a minimum strength of 1500 psi lengthwise, and 1250 psi crosswise, with a maximum 350 percent elongation. Before burying the lines and identification tape, the Contracting Officer's Representative or the USACE Quality Assurance Representative must verify.

2.2.2 Detectable Warning Tape for Non-Metallic Piping

Provide polyethylene plastic tape conforming to the width, color, and printing requirements specified above, with a minimum thickness of 0.004 inch, and a minimum strength of 1500 psi lengthwise and 1250 psi crosswise. Manufacture tape with integral wires, foil backing, or other means of enabling detection by a metal detector when tape is buried up to 3 feet deep. Encase metallic element of the tape in a protective jacket or provide with other means of corrosion protection. Before burying the lines and identification tape, the Contracting Officer's Representative or the USACE Quality Assurance Representative must verify.

2.3 DETECTION WIRE FOR NON-METALLIC PIPING

Insulate a single strand, solid copper detection wire with a minimum of 12

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AWG.

2.4 MATERIAL FOR RIP-RAP

Provide Bedding material and rock conforming to these requirements for construction indicated.

2.4.1 Bedding Material

Provide bedding material consisting of sand, gravel, or crushed rock, well graded, or poorly graded with a maximum particle size of 2 inches. Compose material of tough, durable particles. Allow fines passing the No. 200 standard sieve with a plasticity index less than six.

2.4.2 Rock

Provide rock fragments sufficiently durable to ensure permanence in the structure and the environment in which it is to be used. Use rock fragments free from cracks, seams, and other defects that would increase the risk of deterioration from natural causes. Provide fragments sized so that no individual fragment exceeds a weight of 150 pounds and that no more than 10 percent of the mixture, by weight, consists of fragments weighing 2 pounds or less each. Provide rock with a minimum specific gravity of

2.50. Do not permit the inclusion of more than trace 1 percent quantities of dirt, sand, clay, and rock fines.

2.5 CAPILLARY WATER BARRIER

Provide a capillary water barrier consisting of of clean crushed rock, crushed gravel , or uncrushed gravel conforming with ASTM C33/C33M size 57 conforming to the gradation specified in Table 1 when tested in accordance with ASTM C136/C136M and ASTM C117. The capillary water barrier shall be placed beneath athe building slab with or without a vapor barrier where shown on the drawings to cut off the capillary flow of pore water to the area immediately below. Provide fine aggregate conforming to ASTM C33/C33M for fine aggregate grading with a maximum of 3 percent by weight passing ASTM D1140, No. 200 sieve.

Table 1 - Gradation of Capillary Water Barrier

Sieve Size, inch Percent Passing by Weight

1-1/2 100

1 95-100

1/2 25-60

No. 4 0-10

No. 8 0-5

No. 200 0-3

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PART 3 EXECUTION

3.1 STRIPPING OF TOPSOIL

Where indicated or directed, strip topsoil to a depth of 6 inches. Spread topsoil on areas already graded and prepared for topsoil, or transported and deposited in stockpiles convenient to areas that are to receive application of the topsoil later, or at locations indicated or specified.

Keep topsoil separate from other excavated materials, brush, litter, objectionable weeds, roots, stones larger than 2 inches in diameter, and other materials that would interfere with planting and maintenance operations. Remove from the site any surplus of topsoil from excavations and gradings.

3.2 GENERAL EXCAVATION

Perform excavation of every type of material encountered within the limits of the project to the lines, grades, and elevations indicated and as specified. Perform the grading in accordance with the typical sections shown and the tolerances specified in paragraph FINISHING. Transport satisfactory excavated materials and place in fill or embankment within the limits of the work. Excavate unsatisfactory materials encountered within the limits of the work below grade and replace with satisfactory materials as directed. Include such excavated material and the satisfactory material ordered as replacement in excavation. Dispose surplus satisfactory excavated material not required for fill or embankment in areas approved for surplus material storage or designated waste areas. Dispose unsatisfactory excavated material in designated waste or spoil areas.

During construction, perform excavation and fill in a manner and sequence that will provide proper drainage at all times. Excavate material required for fill or embankment in excess of that produced by excavation within the grading limits from other approved areas selected by the Contractor as specified.

3.2.1 Ditches, Gutters, and Channel Changes

Finish excavation of ditches, gutters, and channel changes by cutting accurately to the cross sections, grades, and elevations shown on Drawings.

Do not excavate ditches and gutters below grades shown. Backfill the excessive open ditch or gutter excavation with satisfactory, thoroughly compacted, material or with suitable stone or cobble to grades shown.

Dispose excavated material as shown or as directed, except in no case allow material be deposited a maximum 4 feet from edge of a ditch. Maintain excavations free from detrimental quantities of leaves, brush, sticks, trash, and other debris until final acceptance of the work.

3.2.2 Drainage Structures

Make excavations to the lines, grades, and elevations shown, or as directed. Provide trenches and foundation pits of sufficient size to permit the placement and removal of forms for the full length and width of structure footings and foundations as shown. Clean rock or other hard foundation material of loose debris and cut to a firm, level, stepped, or serrated surface. Remove loose disintegrated rock and thin strata. Do not disturb the bottom of the excavation when concrete or masonry is to be placed in an excavated area. Do not excavate to the final grade level until just before the concrete or masonry is to be placed.

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3.2.3 Drainage

Provide for the collection and disposal of surface and subsurface water encountered during construction. Completely drain construction site during periods of construction to keep soil materials sufficiently dry. Construct storm drainage features (ponds/basins) at the earliest stages of site development, and throughout construction grade the construction area to provide positive surface water runoff away from the construction activity and provide temporary ditches, swales, and other drainage features and equipment as required to maintain dry soils. When unsuitable working platforms for equipment operation and unsuitable soil support for subsequent construction features develop, remove unsuitable material and provide new soil material as specified herein. It is the responsibility of the Contractor to assess the soil and ground water conditions presented by the plans and specifications and to employ necessary measures to permit construction to proceed.

3.2.4 Dewatering

Control groundwater flowing toward or into excavations to prevent sloughing of excavation slopes and walls, boils, uplift and heave in the excavation and to eliminate interference with orderly progress of construction. Do not permit French drains, sumps, ditches or trenches within 3 feet of the foundation of any structure, except with specific written approval, and after specific contractual provisions for restoration of the foundation area have been made. Take control measures by the time the excavation reaches the water level in order to maintain the integrity of the in situ material. While the excavation is open, maintain the water level continuously, at least 2 feet below the working level. Operate dewatering system continuously until construction work below existing water levels is complete. Submit performance records weekly.

3.2.5 Trench Excavation Requirements

Excavate the trench as recommended by the manufacturer of the pipe to be installed. Slope trench walls below the top of the pipe, or make vertical, and of such width as recommended in the manufacturer's printed installation manual. Provide vertical trench walls where no manufacturer's printed installation manual is available. Shore trench walls more than 4 feet high, cut back to a stable slope, or provide with equivalent means of protection for employees who may be exposed to moving ground or cave in.

Excavate trench walls which are cut back to at least the angle of repose of the soil. Give special attention to slopes which may be adversely affected by weather or moisture content. Do not exceed the trench width below the pipe top of 24 inches plus pipe outside diameter (O.D.) for pipes of less than 24 inches inside diameter, and do not exceed 36 inches plus pipe outside diameter for sizes larger than 24 inches inside diameter. Where recommended trench widths are exceeded, provide redesign, stronger pipe, or special installation procedures by the Contractor. The Contractor is responsible for the cost of redesign, stronger pipe, or special installation procedures without any additional cost to the Government.

3.2.5.1 Bottom Preparation

Grade the bottoms of trenches accurately to provide uniform bearing and support for the bottom quadrant of each section of the pipe. Excavate bell holes to the necessary size at each joint or coupling to eliminate point bearing. Remove stones of 2 inches or greater in any dimension, or as recommended by the pipe manufacturer, whichever is smaller, to avoid point

SECTION 31 00 00 Page 11 bearing.

3.2.5.2 Removal of Unyielding Material

Where unyielding material is encountered in the bottom of the trench, remove such material 4 inches below the required grade and replaced with suitable materials as provided in paragraph BACKFILLING AND COMPACTION.

3.2.5.3 Removal of Unstable Material

Where unstable material is encountered in the bottom of the trench, remove such material to the depth directed and replace it to the proper grade with select granular material as provided in paragraph BACKFILLING AND COMPACTION. When removal of unstable material is required due to the Contractor's fault or neglect in performing the work, the Contractor is responsible for excavating the resulting material and replacing it without additional cost to the Government.

3.2.5.4 Excavation for Appurtenances

Provide excavation for manholes, catch-basins, inlets, or similar structures of sufficient size to permit the placement and removal of forms for the full length and width of structure footings and foundations as shown. Clean rock or loose debris and cut to a firm surface either level, stepped, or serrated, as shown or as directed. Remove loose disintegrated rock and thin strata. Specify removal of unstable material. When concrete or masonry is to be placed in an excavated area, take special care not to disturb the bottom of the excavation. Do not excavate to the final grade level until just before the concrete or masonry is to be placed.

3.2.5.5 Jacking, Boring, and Tunneling

Unless otherwise indicated, provide excavation by open cut except that sections of a trench may be jacked, bored, or tunneled if, in the opinion of the Contracting Officer, the pipe, cable, or duct can be safely and properly installed and backfill can be properly compacted in such sections.

3.2.6 Underground Utilities

The Contractor is responsible for movement of construction machinery and equipment over pipes and utilities during construction. Perform work adjacent to non-Government utilities as indicated in accordance with procedures outlined by utility company. Excavation made with power-driven equipment is not permitted within 2 feet of known Government-owned utility or subsurface construction. For work immediately adjacent to or for excavations exposing a utility or other buried obstruction, excavate by hand. Start hand excavation on each side of the indicated obstruction and continue until the obstruction is uncovered or until clearance for the new grade is assured. Support uncovered lines or other existing work affected by the contract excavation until approval for backfill is granted by the Contracting Officer. Report damage to utility lines or subsurface construction immediately to the Contracting Officer.

3.2.7 Excavation for Structures

Excavate and remove all existing fill a minimum of 1 foot beyond all sides of the footing and projecting downward at 45 degrees to the bottom of fill.

Additionaly excavate and remove native soils under all footings to a depth of 2 feet below bottom of footing or to the top of hard, very dense, or

SECTION 31 00 00 Page 12 cemented native soils, whichever is shallower. Backfill to the footing bearing elevation with compacted satisfactory material placed in controlled lifts as specified below. Ensure that footing subgrades have been inspected and approved by the Geotechnical Engineer prior to backfill and prior to concrete placement.

3.2.8 Excavation for Pavements

Excavate and remove existing fill (as identified in the exploration logs included in the Drawings) under all pavements. In cut areas, excavate to the "compacted subgrade" depths shown on the Drawings, and backfill with compacted satisfactory materials in controlled lifts as specified below.

3.3 SELECTION OF BORROW MATERIAL

Select borrow material to meet the requirements and conditions of the particular fill or embankment for which it is to be used. Obtain borrow material from approved sources. Unless otherwise provided in the contract, the Contractor is responsible for obtaining the right to procure material, pay royalties and other charges involved, and bear the expense of developing the sources, including rights-of-way for hauling from the owners. Borrow material from approved sources on Government-controlled land may be obtained without payment of royalties. Unless specifically provided, do not obtain borrow within the limits of the project site without prior written approval. Consider necessary clearing, grubbing, and satisfactory drainage of borrow pits and the disposal of debris thereon related operations to the borrow excavation.

3.4 OPENING AND DRAINAGE OF EXCAVATION AND BORROW PITS

Notify the Contracting Officer sufficiently in advance of the opening of any excavation or borrow pit or borrow areas to permit elevations and measurements of the undisturbed ground surface to be taken. Except as otherwise permitted, excavate borrow pits and other excavation areas providing adequate drainage. Transport overburden and other spoil material to designated spoil areas or otherwise dispose of as directed. Provide neatly trimmed and drained borrow pits after the excavation is completed.

Ensure that excavation of any area, operation of borrow pits, or dumping of spoil material results in minimum detrimental effects on natural environmental conditions.

3.5 SHORING

3.5.1 General Requirements

Submit a Shoring and Sheeting plan for approval 30 days prior to starting work. Submit drawings and calculations, certified by a registered professional engineer, describing the methods for shoring and sheeting of excavations. Finish shoring, including sheet piling, and install as necessary to protect work, workers, banks, adjacent paving, structures, and utilities. Remove shoring, bracing, and sheeting as excavations are backfilled, in a manner to prevent caving.

3.6 GEOTECHNICAL ENGINEER

Hire a Professional Geotechnical Engineer with a minimum of 5 years of experience in foundation preparation to provide inspection of excavations and soil/groundwater conditions throughout construction. The Geotechnical Engineer is responsible for identifying existing fill and native soils, SECTION 31 00 00 Page 13 identifying foundation over-excavation limits, and performing pre-construction and periodic site visits throughout construction to assess site conditions. The Geotechnical Engineer is responsible for updating the excavation, shoring, and dewatering plans as applicable as construction progresses to reflect changing conditions and submit an updated plan if necessary. The Geotechnical Engineer shall submit a monthly written report, informing the Contractor and Contracting Officer of the status of the plan and an accounting of the Contractor's adherence to the plan addressing any present or potential problems. The Geotechnical Engineer shall attend meetings requested by the Contracting Officer at any time throughout the contract duration.

3.7 GRADING AREAS

Where indicated, divide work into grading areas within which satisfactory excavated material will be placed in embankments, fills, and required backfills. Do not haul satisfactory material excavated in one grading area to another grading area except when so directed in writing. Place and grade stockpiles of satisfactory and unsatisfactory and wasted materials as specified. Keep stockpiles in a neat and well drained condition, giving due consideration to drainage at all times. Clear, grub, and seal by rubber-tired equipment, the ground surface at stockpile locations;

separately stockpile excavated satisfactory and unsatisfactory materials.

Protect stockpiles of satisfactory materials from contamination which may destroy the quality and fitness of the stockpiled material. If the Contractor fails to protect the stockpiles, and any material becomes unsatisfactory, remove and replace such material with satisfactory material from approved sources.

3.8 FINAL GRADE OF SURFACES TO SUPPORT CONCRETE

Do not excavate to final grade until just before concrete is to be placed.

Ensure the material for the final grade does not sit exposed to weather and other construction activities. Ensure the soil below the foundation support area is within plus-or-minus 2 percent of optimum moisture content.

3.9 GROUND SURFACE PREPARATION

3.9.1 General Requirements

Remove and replace unsatisfactory material with satisfactory materials, as directed by the Contracting Officer, in surfaces to receive fill or in excavated areas. Scarify the surface to a depth of 6 inches before the fill is started. Plow, step, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so that the fill material will bond with the existing material. When subgrades are less than the specified density, break up the ground surface to a minimum depth of 6 inches, pulverizing, and compacting to the specified density. When the subgrade is part fill and part excavation or natural ground, scarify the excavated or natural ground portion to a depth of 12 inches and compact it as specified for the adjacent fill.

Do not place material on surfaces that are muddy, frozen, or contain frost. Moisture-condition material as necessary to within plus or minus 2 percent of optimum moisture. Finish compaction by sheepsfoot rollers, pneumatic-tired rollers, steel-wheeled rollers, or other approved equipment well suited to the soil being compacted.

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3.9.2 Pavement Subgrade

Pavement subgrade shall be proof-rolled prior to placing pavement materials. Soft spots shall be over-excavated and backfilled with compacted satisfactory materials.

3.10 UTILIZATION OF EXCAVATED MATERIALS

Dispose unsatisfactory materials removed from excavations into designated waste disposal or spoil areas. Use satisfactory material removed from excavations, insofar as practicable, in the construction of fills, embankments, subgrades, shoulders, bedding (as backfill), and for similar purposes. Excavated fill and native soils meeting the requirements of satisfactory materials may be used as backfill under structures and pavements.

Submit procedure and location for disposal of unused satisfactory material. Do not waste any satisfactory excavated material without specific written authorization. Dispose of satisfactory material, authorized to be wasted, in designated areas approved for surplus material storage or designated waste areas as directed. Clear and grub newly designated waste areas on Government-controlled land before disposal of waste material thereon. Stockpile and use coarse rock from excavations for constructing slopes or embankments adjacent to streams, or sides and bottoms of channels and for protecting against erosion. Do not dispose excavated material to obstruct the flow of any stream, endanger a partly finished structure, impair the efficiency or appearance of any structure, or be detrimental to the completed work in any way.

3.11 BURIED TAPE AND DETECTION WIRE

3.11.1 Buried Warning and Identification Tape

Provide buried utility lines with utility identification tape. Bury tape 12 inches below finished grade; under pavements and slabs, bury tape 6 inches below top of subgrade.

3.11.2 Buried Detection Wire

Bury detection wire directly above non-metallic piping at a distance not to exceed 12 inches above the top of pipe. Extend the wire continuously and unbroken, from manhole to manhole. Terminate the ends of the wire inside the manholes at each end of the pipe, with a minimum of 3 feet of wire, coiled, remaining accessible in each manhole. Furnish insulated wire over it's entire length. Install wires at manholes between the top of the corbel and the frame, and extend up through the chimney seal between the frame and the chimney seal. For force mains, terminate the wire in the valve pit at the pump station end of the pipe. Before the Detection Wire is buried, Contracting Officer's Representative or USACE Quality Assurance Representative shall verify.

3.12 BACKFILLING AND COMPACTION

3.12.1 General Requirements

Prepare ground surface on which backfill is to be placed in conformance with the applicable portions of paragraph GROUND SURFACE PREPARATION.

Finish compaction by sheepsfoot rollers, pneumatic-tired rollers, steel-wheeled…