26500017 IFB Addendum 1 College Street, Drainage Improvements Phase II

COLLEGE STREET
DRAINAGE IMPROVEMENTS
PHASE 2
TOWN OF CHRISTIANSBURG, VIRGINIA
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Project Site
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NOTE:
THIS PROJECT IS TO BE CONSTRUCTED IN ACCORDANCE WITH THE 2020 VDOT
ROAD AND BRIDGE SPECIFICATIONS, 2016 ROAD AND BRIDGE STANDARDS, 2023
MUTCD, 2026 VIRGINIA SUPPLEMENT TO THE MUTCD VERSION 11.0, 2026 WORK
AREA PROTECTION MANUAL VERSION 11.0, AND IN ACCORDANCE WITH THE COVER SHEET
TOWN OF CHRISTIANSBURG STANDARDS AND SPECIFICATIONS INCLUDING THE
MISS UTILITY
MINIMUM STANDARDS AND SPECIFICATIONS FOR THE WATERLINE DESIGN AND
CONSTRUCTION DATED 8/14/2014 AND CHAPTER II OF THE LOCAL STANDARDS
AND REVIEW PROGRAM FOR WATER AND SEWER LINE EXTENSIONS DATED
C1.0
FEBRUARY 1995, AND AS AMENDED BY CONTRACT PROVISIONS AND THE
COMPLETE ELECTRONIC PDF VERSION OF THE PLAN ASSEMBLY.
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A. MORTON THOMAS AND ASSOCIATES, INC.
CONSULTING ENGINEERS
105 ARBOR DRIVE, SUITE 101
CHRISTIANSBURG, VA 24073
PHONE (540) 251-5134
EMAIL: AMT1@AMTENGINEERING.COM
5/20/2026
COLLEGE STREET
DRAINAGE
IMPROVEMENTS
PHASE 2
TOWN OF CHRISTIANSBURG, VA
SHEET INDEX
Sheet Set Number Sheet Number Sheet Title
MARK DATE DESCRIPTION
100% DESIGN SUBMISSION
PROJECT NO: 22-0196.001
SCALE:
DESIGNED BY:
DRAWN BY:
CHECKED BY:
SHEET TITLE
SHEET OF

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GENERAL NOTES AND
SEQUENCE OF
CONSTRUCTION
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GENERAL NOTES: C. MATERIALS AND INSTALLED WORK MAY REQUIRE TESTING AND RETESTING AT ANY TIME DURING
24. PROJECT ACCESS WILL BE DICTATED BY TOWN OF CHRISTIANSBURG AND DISCUSSED IN THE PRE-BID MEETING. 3. INSTALLATION OF TAPS ON EXISTING WATER MAINS, WATER METERS, AND WATER METER BOXES SHALL PROGRESS OF WORK. RETESTING OF REJECTED MATERIALS FOR INSTALLED WORK, SHALL BE DONE
BE PERFORMED BY TOWN PERSONNEL, UNLESS OTHERWISE AND SPECIFICALLY APPROVED BY THE AT CONTRACTOR'S EXPENSE.
1. ALL PROPOSED WORK SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE VIRGINIA DEPARTMENT OF
TRANSPORTATION LATEST EDITION OF ROAD AND BRIDGE SPECIFICATIONS UNLESS OTHERWISE NOTED. 25. THE CONTRACTOR SHALL PERFORM TEST PITS AT LOCATIONS WHERE PROPOSED IMPROVEMENTS CROSS EXISTING DIRECTOR OF ENGINEERING AND THE WATER SYSTEM OPERATOR. THE LOCATION AND INSTALLATION D. THE PRE-CONSTRUCTION CONFERENCE AT PROJECT SITE SHOULD INCLUDE A REVIEW OF
UTILITY SERVICES AND WHERE NEW FACILITIES CONNECT TO EXISTING FACILITIES TO OBTAIN THE LOCATION AND OF EACH ITEM SHALL BE COORDINATED BY THE CONTRACTOR. PROCEDURES FOR SATISFACTORY CONCRETE OPERATIONS. REVIEW REQUIREMENTS FOR
2. CARE SHALL BE TAKEN TO PROTECT FROM DAMAGES ALL EXISTING SURFACES, STRUCTURES, AND ELEVATION OF THE EXISTING UTILITY PRIOR TO INSTALLATION OF STORM DRAIN SYSTEM. CONTRACTOR SHALL SUBMITTALS, STATUS OF COORDINATING WORK, AND AVAILABILITY OF MATERIALS. ESTABLISH
IMPROVEMENTS ADJACENT TO THE WORK. ANY DAMAGE TO SUCH ITEMS, AS A RESULT OF THE WORK, PROVIDE THIS INFORMATION TO THE TOWN OF CHRISTIANSBURG SO THE ENGINEER CAN MAKE ADJUSTMENTS TO 4. WATER METER AND BOX LOCATIONS SHALL BE AT THE PROPERTY LINE OR EASEMENT LINE UNLESS PRELIMINARY WORK PROGRESS SCHEDULE AND PROCEDURES FOR MATERIALS INSPECTION,
SHALL BE RESTORED TO THEIR ORIGINAL CONDITION AT NO ADDITIONAL COST TO THE TOWN OF THE PLANS, IF NECESSARY. OTHERWISE APPROVED BY TOWN OF CHRISTIANSBURG PERSONNEL. TESTING, AND CERTIFICATIONS A. MORTON THOMAS AND ASSOCIATES, INC.
CHRISTIANSBURG. E. WHEN PROPRIETARY ITEMS ARE USED, FOLLOW THE MANUFACTURER'S RECOMMENDATIONS. CONSULTING ENGINEERS
26. THE BIDDER IS RESPONSIBLE FOR COORDINATING WITH THE UTILITY PROVIDERS PRIOR TO SUBMITTING A BID. ALL 5. ALL MATERIALS USED SHALL BE IN CONFORMANCE WITH THE MOST RECENT STANDARDS SET FORTH BY
F. THE CONTRACTOR SHALL NOTIFY THE OWNER'S REPRESENTATIVE 48 HOURS BEFORE PLACING 105 ARBOR DRIVE, SUITE 101
COSTS ASSOCIATED WITH PROVIDING THE REQUIRED MEASURES FOR PROTECTION OF THE EXISTING UTILITY SERVICES THE AWWA AND THE SAFE DRINKING WATER ACT.
3. THE CONTRACTOR SHALL PERFORM ALL WORK IN A MANNER THAT WILL ENSURE THE LEAST CONCRETE IN ORDER TO GIVE THE OWNER'S REPRESENTATIVE AN OPPORTUNITY TO INSPECT THE CHRISTIANSBURG, VA 24073
DURING CONSTRUCTION WILL NOT BE PAID FOR SEPARATELY BUT ARE TO BE INCLUDED IN OTHER ITEMS OF WORK.
PRACTICABLE OBSTRUCTION TO TRAFFIC AND IS CONSISTENT WITH ESTABLISHED SAFETY PROCEDURES. FORMWORK, REINFORCING, AND RELATED ITEMS PRIOR TO PLACEMENT OF THE CONCRETE. PHONE (540) 251-5134
6. ALL PIPE USED FOR POTABLE WATER DISTRIBUTION SHALL BE APPROVED BY THE NATIONAL SANITATION
THE CONTRACTOR WILL BE RESPONSIBLE FOR THE MAINTENANCE OF TRAFFIC THROUGHOUT THE EMAIL: AMT1@AMTENGINEERING.COM
EROSION CONTROL NARRATIVE FOUNDATION FOR WATER DISTRIBUTION PIPING.
CONSTRUCTION DURATION.
3. CONCRETE MATERIALS
1. PROJECT DESCRIPTION: 7. COPPER PIPE SHALL BE USED FOR ALL WATER LINES WITH A NOMINAL DIAMETER OF LESS THAN 3
4. THE CONTRACTOR SHALL MAINTAIN ACCESS TO ALL PRIVATE DRIVEWAYS AT ALL TIMES.
INCHES. COPPER PIPE SHALL BE SEAMLESS, TYPE "K" COPPER, MEETING THE REQUIREMENTS OF ASTM A. CONCRETE SHALL BE VDOT A4 4000 PSI MIX WITH 4.5-7.5% AIR CONTENT AND SLUMP OF 3-5
* THIS PROJECT INCLUDES THE INSTALLATION OF A NEW STORM DRAIN SYSTEM ALONG THE EXISTING DRAINAGE B88. INCHES.
5. REMOVE AND STORE ALL SALVAGEABLE ITEMS FROM WITHIN WORK AREA. ANY MATERIALS THAT ARE
DITCH BEHIND HOMES ON COLLEGE ST. THE NEW STORM DRAIN WILL BE INSTALLED BELOW GROUND ALONG A
BROKEN SHALL BE REPLACED. ALL SURFACE FEATURES INCLUDING CURB/GUTTER, SIDEWALK, ETC. SHALL B. WATER: ASTM C94 AND POTABLE.
SIMILAR ALIGNMENT WITH MINOR GRADING TO ENSURE THE SURFACE CONTINUES TO DRAIN. THE PROJECT WILL SANITARY SEWER NOTES
BE RESTORED IN KIND. C. EPOXY JOINT FILLER SHALL BE A 100% SOLID SEMI-RIGID EPOXY COMPOUND WITH A MINIMUM
ALSO INCLUDE THE CONSTRUCTION OF A RETENTION BASIN NEAR THE INTERSECTION OF COLLEGE ST AND DEPOT
SHORE D HARDNESS OF FIFTY (50).
ST. 1. ALL SANITARY SEWER SERVICE LINES, APPURTENANCES, ETC. ARE UNDER THE OWNERSHIP OF THE TOWN
6. IN THE EVENT THAT THE CONTRACTOR ENCOUNTERS EXISTING UTILITIES AND/OR STRUCTURES NOT D. PREFORMED JOINT FILLER SHALL BE PRE-FORMED JOINT FILLER CONFORMING TO ASTM D1751.
OF CHRISTIANSBURG AND SHALL BE CONSTRUCTED, INSPECTED, AND TESTED IN ACCORDANCE WITH THE
SHOWN ON THE PLANS, THE CONTRACTOR SHALL NOTIFY THE TOWN INSPECTOR FOR DIRECTIONS PRIOR
2. EXISTING SITE CONDITIONS: REGULATIONS, STANDARDS AND SPECIFICATIONS SET FORTH BY THE COMMONWEALTH OF VIRGINIA
TO PROCEEDING WITH THE WORK AFFECTING SAID UTILITY AND/OR STRUCTURE.
AND THE TOWN OF CHRISTIANSBURG. 4. REINFORCEMENT
* THE EXISTING SITE CURRENTLY IS A RESIDENTIAL AREA UPSTREAM OF THE COMMERCIAL DOWNTOWN AREA.
7. THE CONTRACTOR SHALL NOTIFY THE TOWN INSPECTOR IMMEDIATELY UPON ENCOUNTERING ANY
THERE ARE NUMEROUS BURIED UTILITIES ALONG THE PLANNED ALIGNMENT THAT MUST BE MITIGATED 2. ALL SANITARY SEWER LINES SHALL BE CONSTRUCTED, INSPECTED, AND TESTED IN ACCORDANCE WITH A. STEEL BAR REINFORCEMENT SHALL CONFORM TO ASTM A615, GRADE 60 FOR ALL BARS.
HAZARDOUS OR REGULATED MATERIALS DURING THE COURSE OF WORK.
THROUGH COORDINATION WITH EACH RESPECTIVE UTILITY PROVIDER, THE TOWN, AND THE INDIVIDUAL THE COMMONWEALTH OF VIRGINIA'S SEWAGE COLLECTION AND TREATMENT REGULATIONS, THE
B. REINFORCEMENT SHALL BE FABRICATED ACCORDING TO PROVISIONS OF ACI 315 "MANUAL OF
PROPERTY OWNERS. MOST OF SITE CONSIST OF LIGHT RESIDENTIAL DEVELOPMENT. THE SITE IS SLOPED WITH REGULATIONS, STANDARDS, AND SPECIFICATIONS SET FORTH BY THE COMMONWEALTH OF VIRGINIA,
8. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO IMMEDIATELY REMOVE, TRANSPORT OFF-SITE, STANDARDS AND PRACTICES FOR DETAILING REINFORCED CONCRETE STRUCTURES."
ELEVATIONS AROUND 2100-2142. SOME EXISTING HARDSCAPE AND LANDSCAPING IS EXPECTED TO BE AND THE WVWA LOCAL STANDARDS & REVIEW PROGRAM FOR WATER & SEWER LINE EXTENSIONS,
AND LEGALLY DISPOSE OF ANY AND ALL EXCAVATED/DELETERIOUS MATERIALS. C. ALL REINFORCEMENT STEEL SHALL BE FREE FROM MUD, OIL , OR NON-METALLIC COATINGS AT TIME
DISTURBED DURING THE PROJECT AND SHALL BE RESTORED PRIOR TO COMPLETION OF PROJECT. NO ROCK LATEST EDITIONS.
OF CONCRETING.
EXCAVATION IS EXPECTED DURING EXCAVATION FOR THE NEW STORM DRAIN AND THE CONTRACTOR SHALL
9. THE CONTRACTOR SHALL OBTAIN A GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM D. EMBEDMENT OF LAP SPLICE LENGTHS FOR ALL REINFORCING STEEL BARS SHALL BE 48 BARS
PLAN WORK ACCORDINGLY. NO BLASTING IS PERMITTED. 3. CONNECTIONS TO EXISTING SANITARY SEWERS SHALL BE PERFORMED BY THE CONTRACTOR, IN
CONSTRUCTION ACTIVITIES AND FOLLOW ALL CONDITIONS OF THE PERMIT. DIAMETERS.
ACCORDANCE WITH NOTE #1, AND UNDER THE DIRECT SUPERVISION OF TOWN OF CHRISTIANSBURG
3. ADJACENT AREAS: PERSONNEL. E. FABRICATED BARS NOT CONFORMING TO DIMENSIONS AND DETAILS SHALL BE REJECTED.
10. EXISTING PAVEMENT SHALL BE SAW CUT IN THE GENERAL LOCATIONS SHOWN ON THE PLANS PRIOR TO
F. WELDING OF CROSSING BARS FOR ASSEMBLY OF REINFORCEMENT IS NOT PERMITTED. THE
INSTALLATION OF STORM DRAIN SYSTEM AND UTILITIES.
* AREAS ADJACENT TO THE SITE INCLUDE RESIDENCES, PRIVATE DRIVEWAYS, AND PARKING LOTS. WORK TIMES ARE 4. THE CONTRACTOR SHALL INSTALL ALL PROPOSED SERVICE LINES. FOLLOWING MINIMUM COVER WILL BE PROVIDED FOR REINFORCING BARS:
ESTABLISHED TO MINIMIZE IMPACTS ON ADJACENT AREAS (NOISE POLLUTION, DUST, TRAFFIC INTERRUPTIONS, CAST AGAINST & PERMANENTLY EXPOSED TO EARTH MIN COVER
11. THE CONTRACTOR SHALL ENSURE THE FINAL GRADES PROVIDE POSITIVE DRAINAGE.
ETC.) ASSOCIATED WITH THE PROJECT. SEE SHEET C8.0 FOR WORK TIME RESTRICTIONS. 5. ALL SANITARY SEWER GRAVITY MAIN LINES TO BE ACCEPTED, OWNED, OPERATED, AND/OR MAINTAINED
EXPOSED TO EARTH OR WEATHER: 3"
BY THE TOWN OF CHRISTIANSBURG SHALL BE A MINIMUM 8 INCH DIAMETER SDR 35 PVC, EXCEPT
12. THE CONTRACTOR SHALL VERIFY EXISTING CONDITIONS OF ALL EXISTING DRAINAGE STRUCTURES TO #6 BARS AND LARGER 2"
4. OFF-SITE AREAS: WHERE REQUIRED IN ACCORDANCE WITH NOTE #1
REMAIN IN PLACE WHICH CONNECT TO THE NEW STORM DRAIN SYSTEM. #5 BARS AND SMALLER 1 1/2"
* ANY OFF-SITE LAND DISTURBANCE ACTIVITIES ASSOCIATED WITH THIS PROJECT SHALL REQUIRE A SEPARATE LAND 6. ALL SANITARY SEWER GRAVITY LATERAL SERVICE LINES TO BE ACCEPTED, OWNED, OPERATED, AND/OR
13. THE LOCATIONS OF SUBSURFACE UTILITIES SHOWN ON THE PLANS ARE APPROXIMATE AND FOR
DISTURBANCE PERMIT BY THE CONTRACTOR. MAINTAINED BY THE WVWA SHALL BE A MINIMUM 6 INCH DIAMETER SDR 35 PVC, FROM THE MAIN LINE 5. CONCRETE MIXING
INFORMATION AND GUIDANCE ONLY. PORTIONS OF THESE UTILITIES ARE BASED UPON MISS UTILITY
TO THE PROPERTY LINE, TERMINATED BY A CLEAN OUT AT THE CONNECTION TO PRIVATELY MAINTAINED
MARKINGS OR RECORD DRAWINGS AND THEREFORE THERE IS NO GUARANTEE TO THE ACCURACY OF
5. SOILS: SEWER PIPE. A. PROVIDE BATCH TICKET FOR EACH BATCH DISCHARGED AND USED IN WORK, INDICATING PROJECT
LOCATIONS, AS SHOWN ON THE PLANS. IT IS THE CONTRACTOR'S RESPONSIBILITY TO FIELD LOCATE ALL
IDENTIFICATION NAME AND NUMBER, DATE, MIX TYPE, MIX TIME, QUANTITY, AND AMOUNT OF
UTILITIES PRIOR TO ANY CONSTRUCTION.
* THE MAJORITY OF THE SOILS ON THE PROJECT ARE CLASSIFIED BY NRCS AS GROSECLOSE-URBAN LAND COMPLEX, 2 7. A TRAFFIC BEARING CLEANOUT COVER SHALL BE INSTALLED OVER ALL CLEANOUTS THAT WILL BE WATER INTRODUCED.
TO 15 PERCENT SLOPES. THESE SOILS HAVE A DRAINAGE CLASS RATING OF WELL DRAINED. ACCEPTED, OWNED, OPERATED, AND/OR MAINTAINED BY THE TOWN OF CHRISTIANSBURG.
14. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO PROTECT ANY AND ALL EXISTING UTILITIES B. READY-MIX CONCRETE: COMPLY WITH REQUIREMENTS OF ASTM C94, AND AS SPECIFIED.
FROM DAMAGE. CONTRACTOR SHALL BE RESPONSIBLE FOR THE REPAIR AND RE-ESTABLISHMENT OF WHEN AIR TEMPERATURE IS BETWEEN 85 DEG F. (30 DEG C.) AND 90 DEG F. (32 DEG C.), REDUCE
6. CRITICAL EROSION AREAS: 8. ABANDONED SEWER LINES SHALL BE PLUGGED AFTER NEW LINES HAVE BEEN INSTALLED, INSPECTED,
ANY AND ALL UTILITIES DISRUPTED DURING THE EXCAVATION/CONSTRUCTION. MIXING AND DELIVERY TIME FROM 1-1/2 HOURS TO 75 MINUTES, AND WHEN AIR TEMPERATURE IS 5/20/2026
TESTED, ACCEPTED, AND IN USE.
* THERE ARE NO CRITICAL EROSION AREAS ON THIS PROJECT. ABOVE 90 DEG. F (32 DEG. C), REDUCE MIXING AND DELIVERY TIME TO 60 MINUTES.
15. THE CONTRACTOR SHALL, AT A MINIMUM, REMOVE OR RELOCATE ANY UTILITY THAT INTERFERES WITH
CONCRETE FOR DRAINAGE STRUCTURES
THE CONSTRUCTION SHOWN ON THESE PLANS. THE CONTRACTOR SHALL NOTIFY THE TOWN INSPECTOR
7. EROSION AND SEDIMENT CONTROL MEASURES: (FOR OTHER CONCRETE SEE PROJECT MANUAL) 6. TESTING REQUIREMENTS
OF ANY UTILITY THAT NEEDS TO BE RELOCATED, PRIOR TO CONSTRUCTION, SO THAT EXISTING
CONDITIONS CAN BE IDENTIFIED. THE CONTRACTOR SHALL COORDINATE ALL UTILITY REMOVALS OR
* THE FOLLOWING VESCH CONTROLS ARE TO BE USED INCLUDE:
1. SUBMITTALS A. ONE SET OF COMPRESSION TEST CYLINDERS IS REQUIRED FOR EACH DAY'S POUR AND FOR EACH 50
RELOCATIONS WITH THE APPROPRIATE UTILITY OWNER.
CY OF EACH CONCRETE MIX.
** SILT FENCE PER STD. 3.05
16. UTILITY SERVICE INTERRUPTION SHALL REQUIRE 14 DAYS ADVANCED NOTIFICATION TO THE TOWN OF A. PRODUCT DATA FOR PROPRIETARY MATERIALS AND ITEMS, INCLUDING REINFORCEMENT AND B. ONE SET OF FIVE COMPRESSION CYLINDERS SHALL BE CAST FROM THE SAME TRUCKLOAD OF
** STORM DRAIN INLET PROTECTION PER STD. 3.07
CHRISTIANSBURG, THE AFFECTED UTILITY OWNER, AND THOSE AFFECTED BY THE INTERRUPTION IN FORMING ACCESSORIES, ADMIXTURES, PATCHING COMPOUNDS, WATERSTOPS, JOINT SYSTEMS, CONCRETE. ONE CYLINDER SHALL BE BROKEN AT 7 DAYS AND THREE CYLINDERS SHALL BE BROKEN
** DEWATERING STRUCTURE PER STD. 3.26
SERVICE. CURING COMPOUNDS, FLY ASH, AND OTHERS AS REQUESTED BY ENGINEER. AT 28 DAYS. THE FIFTH CYLINDER SHALL BE HELD FOR RE-TESTING, OR FOR A 56 DAY STRENGTH
** DUST CONTROL PER STD. 3.39
B. SUBMIT LABORATORY TEST REPORTS FOR CONCRETE MATERIALS AND MIX DESIGN TESTS. TEST, SHOULD THE 28 DAY TEST FAIL TO MEET THE REQUIREMENTS. TESTS SHALL BE MADE BY AN
17. ALL STORM PIPES AND DROP INLETS SHALL BE CLEANED OF DEBRIS AND ERODED MATERIALS AT ALL STAGES OF INDEPENDENT LABORATORY RETAINED BY CONTRACTOR.
8. PERMANENT STABILIZATION: C. MATERIALS CERTIFICATES IN LIEU OF MATERIALS LABORATORY REPORTS WHEN PERMITTED BY
CONSTRUCTION AND PRIOR TO FINAL ACCEPTANCE. ENGINEER. MATERIAL CERTIFICATES SHALL BE SIGNED BY MANUFACTURER AND CONTRACTOR, C. SLUMP TEST SHALL BE MADE WHENEVER CYLINDERS ARE MADE.
* ALL DISTURBED AREAS ARE EXPECTED TO BE CONFINED TO THE TRENCH EXCAVATION NECESSARY FOR CERTIFYING THAT EACH MATERIAL ITEM COMPLIES WITH OR EXCEEDS SPECIFIED REQUIREMENTS. D. AIR TEST SHALL BE MADE WHENEVER CYLINDER ARE MADE.
18. THE CONTRACTOR SHALL CONSTRUCT AND MAINTAIN, THROUGHOUT THE PROJECT, ALL EROSION AND SEDIMENT COLLEGE STREET
CONSTRUCTION OF THE NEW STORM DRAIN. THE EXCESS EXCAVATED MATERIAL SHALL BE HAULED AWAY TO AN PROVIDE CERTIFICATION FROM ADMIXTURE MANUFACTURERS THAT CHLORIDE CONTENT COMPLIES E. CYLINDERS SHALL BE PLACED IN A FIELD STORAGE BOX CONTAINING A MIN/MAX THERMOMETER.
CONTROL MEASURES, AS SHOWN ON THE CONTRACT DRAWINGS. ALL CONTROL METHODS AND DETAILS SHOWN
APPROVED OFF-SITE LOCATION. ANY STORM WATER THAT ACCUMULATES IN THE TRENCH DURING WITH SPECIFICATION REQUIREMENTS. THE TEMPERATURE IN THE BOX SHALL BE KEPT BETWEEN 70 degreesF TO 75 degreesF WHEN POSSIBLE. IN NO
COMPLY WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK LATEST EDITION, AND VDOT ROAD AND DRAINAGE
CONSTRUCTION SHALL BE PUMPED OUT TO A SEDIMENT BAG. NEARBY STORM INLETS SHALL BE EQUIPPED WITH EVENT SHALL THE STORAGE BOX TEMPERATURE BE ALLOWED TO FALL BELOW 40 degreesF OR RISE ABOVE
BRIDGE STANDARDS LATEST EDITION.
SUITABLE INLET PROTECTION. 2. QUALITY ASSURANCE 90 degreesF.
IMPROVEMENTS
19. TEMPORARY TRAFFIC CONTROL SHALL BE IN ACCORDANCE WITH THE MUTCD, THE WORK AREA PROTECTION
9. STORMWATER RUN-OFF CONSIDERATIONS:
MANUAL AND THE VIRGINIA SUPPLEMENT. A. CODES AND STANDARD: COMPLY WITH PROVISIONS OF FOLLOWING CODES, SPECIFICATIONS, AND 7. NOTES TO CONCRETE PLACEMENT SCHEDULE: PHASE 2
STANDARDS, EXCEPT WHERE MORE STRINGENT REQUIREMENTS ARE SHOWN OR SPECIFIED:
* THIS PROJECT WILL NOT RESULT IN AN INCREASE IN THE SITE'S PEAK RUNOFF RATE.
20. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION SHALL COMPLY WITH OSHA STANDARDS FOR THE ACI 318, "BUILDING CODE REQUIREMENTS FOR REINFORCED CONCRETE." A. AIR-ENTRAINED CONCRETE MIX THAT DOES NOT MEET THE MINIMUM OR EXCEEDS THE MAXIMUM
TOWN OF CHRISTIANSBURG, VA
CONSTRUCTION INDUSTRY (29 CFR PART 1926). CONCRETE REINFORCING STEEL INSTITUTE (CRSI), "MANUAL OF STANDARD PRACTICE." AIR-CONTENT REQUIREMENTS SHALL BE REJECTED.
POTABLE WATER NOTES ACI 301, "SPECIFICATION FOR STRUCTURAL CONCRETE FOR BUILDINGS." B. CONCRETE DISPATCHED MORE THAN 90 MINUTES BEFORE PLACEMENT SHALL BE REJECTED.
21. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL ON-SITE SAFETY.
ACI 306, ACI 309, ACI 305, ACI 304, ACI 315, ACI 308 C. CONCRETE MORE THAN 5" SLUMP SHALL BE REJECTED UNLESS A SUPER-PLASTIZER ADMIXTURE IS
1. ALL WATER SERVICE LINES, APPURTENANCES, ETC. ARE UNDER THE OWNERSHIP OF THE TOWN OF USED, THEN THE SLUMP SHOULD NOT EXCEED 8"
B. CONCRETE TESTING SERVICE: A TESTING LABORATORY ACCEPTABLE TO ENGINEER RETAINED BY
22. CONSTRUCTION STAKEOUT AND SURVEYING FOR ALL CONSTRUCTION ON THIS PROJECT SHALL BE PERFORMED BY
CHRISTIANSBURG.
OWNER TO PERFORM MATERIAL EVALUATION TESTS AND TO DESIGN CONCRETE MIXES AS
THE CONTRACTOR.
SPECIFIED.
2. WATER SERVICE LINES SHALL BE IN ACCORDANCE WITH THE AWWA STANDARD C600, THE UNIFORM
23. CONTRACTOR SHALL COMPLY WITH S59.1-406, ET SEW. OF THE CODE OF VIRGINIA (OVERHEAD HIGH VOLTAGE LINES STATEWIDE BUILDING CODE, AND TOWN OF CHRISTIANSBURG MINIMUM STANDARDS AND
SAFETY ACT). SPECIFICATIONS FOR WATERLINE DESIGN AND CONSTRUCTION, LATEST EDITIONS.
SEQUENCE OF CONSTRUCTION NOTES SEQUENCE OF CONSTR. FOR STJB-1 JUNCTION BOX
14. ANY OFF-SITE LAND DISTURBANCE ACTIVITIES WILL REQUIRE A SEPARATE LAND DISTURBING PERMIT BY THE CONTRACTOR OR AN
1. THE CONTRACTOR IS RESPONSIBLE FOR OBTAINING AND MAINTAINING ANY PERMITS FOR THEIR FACILITIES INCLUDING DISPOSAL AND CONNECTED CULVERTS & STRUCTURES MARK DATE DESCRIPTION
AMENDMENT TO THE SWPPP.
AREAS, LAY-DOWN YARDS, ETC.
1. RELOCATE ALL UTILITIES AND OBSTRUCTIONS IN THE WORK AREA AS SHOWN ON THE PLANS.
15. THE PROJECT CONSISTS OF SIX DISTINCT TASKS AS FOLLOWS:
2. THE CONTRACTOR SHALL INSTALL INLET PROTECTION AND CULVERT INLET PROTECTION ON EXISTING INLETS AND CULVERTS WHILE
A. INSTALLATION OF JUNCTION BOX (STJB-1) AT DEPOT STREET WITH GRADING TO ELIMINATE THE EXISTING DEPRESSION. 2. WORK SHALL BEGIN WITH THE EXCAVATION AND CONSTRUCTION OF THE NEW PIPES LEADING TO THE JUNCTION BOX AT DEPOT
PERFORMING UTILITY RELOCATIONS.
B.STORM PIPE AND STRUCTURES INSTALLATION FROM THE STJB-1 JUNCTION BOX ALONG THE EXISTING DRAINAGE SWALE UP TO STREET AND PROCEEDING UPSTREAM.
CONNECT WITH THE INSTALLED PHASE 1 SYSTEM.
3. THE CONTRACTOR SHALL INSTALL SILT FENCE IN AREAS DOWN GRADIENT OF AREAS PLANNED FOR DISTURBANCE.
C.STORM PIPE AND STRUCTURES TO COLLECT STORM RUNOFF FROM MAIN STREET INTO THE COLLEGE STREET PIPE SYSTEM. 3. EXISTING DRAINAGE CULVERTS AND DROP INLET STRUCTURES SHALL REMAIN IN SERVICE UNTIL FLOW CAN BE REDIRECTED INTO THE
D. PRESERVE POTABLE WATER SUPPLY TO RESIDENCES, EXISTING SANITARY LATERALS, SEWER MAIN, AND STRUCTURES AND NEW PIPE SYSTEM.
4. THE CONTRACTOR SHALL PERFORM NECESSARY DEMOLITION AND CLEARING IN AREAS PLANNED FOR DISTURBANCE.
REPLACEMENT OF PIPE SECTIONS THAT ARE DAMAGED
E. CONNECT PHASE 2 STORM SYSTEM TO PHASE 1 SYSTEM WITHIN THE OVERLAP SECTION. 4. WATER SUPPLY AND SEWER LATERALS SHALL BE PROTECTED AND REMAIN IN SERVICE. IF TEMPORARY SERVICE OUTAGES ARE
5. THE CONTRACTOR SHALL STRIP AND STOCKPILE TOPSOIL FOR PLACEMENT DURING FINAL GRADING.
F. CONSTRUCT THE STORM BASIN ON THE EAST SIDE OF DEP0T ST IMMEDIATELY DOWNSTREAM. REQUIRED, THE CONTRACTOR MUST PROVIDE 24 HOUR NOTICE TO THE TOWN, ENGINEER, AND AFFECTED PROPERTY OWNERS, AND
MAKE PROVISIONS TO PROVIDE ALTERNATE SERVICE UNTIL NORMAL SERVICE MAY BE RECONNECTED.
6. THE CONTRACTOR SHALL INSTALL NEW STORM DRAIN AND ASSOCIATED APPURTENANCES WHILE MAINTAINING EXISTING EROSION
AND SEDIMENT CONTROL (ESC) MEASURES AND CONCURRENTLY INSTALLING INLET PROTECTION AS WORK PROGRESSES TO PREVENT 16. BEGIN CONSTRUCTION FOR EACH AREA AT THE DOWNSTREAM MOST POINT WORKING UPSTREAM.
5. ONCE STORM FLOW MAY BE REDIRECTED IN TO THE NEW SYSTEM, THE EXISTING PIPE AT THE APARTMENTS AND DUPLEX MAY BE
SEDIMENT LADEN WATER FROM ENTERING THE PIPE SYSTEM.
17. FOR YARDS WITH ENCLOSED FENCING THE FENCE SHALL BE RELOCATED TO EDGE OF THE TEMPORARY CONSTRUCTION EASEMENT REMOVED OR GROUTED AS SHOWN ON THE PLANS AND FINAL CONSTRUCTION OF THE JUNCTION BOX AT DEPOT STREET MAY BE 100% DESIGN SUBMISSION
COMPLETED.
7. THE CONTRACTOR SHALL MAINTAIN ESC MEASURES THROUGHOUT CONSTRUCTION WORK. AND RESTORED TO ITS ORIGINAL LOCATION AND CHARACTER UPON COMPLETION OF WORK. IF NEEDED, TEMPORARY FENCING MAY
PROJECT NO: 22-0196.001
BE INSTALLED FOR PETS.
6. REPLACE THE CULVERT FROM COLLEGE STREET TO THE JUNCTION BOX AT THE LODGE. SCALE:
8. ALL ESC MEASURES WILL BE CHECKED REGULARLY FOR SEDIMENT BUILD UP THAT WILL PREVENT PROPER DRAINAGE. REMOVED
SEDIMENT SHALL BE DISPOSED IN ACCORDANCE WITH PERMIT CONDITIONS. 18. CONTRACTOR SHALL INSTALL TEMPORARY SAFETY FENCING ALONG THE TEMPORARY CONSTRUCTION EASEMENT BETWEEN ANY DESIGNED BY:
7. CULVERT PIPES SHALL BE INSTALLED AND IMMEDIATELY BACKFILLED AT THE COMPLETION OF EACH SEGMENT. GRADE THE
PARCEL RESIDENT AND THE WORK AREA. ONCE FINAL STABILIZATION IS ACHIEVED (OR AT THE REQUEST OF THE OWNER), AT ANY
DRAWN BY:
SURROUNDING AREA TO DRAIN TOWARD THE DROP INLETS AT EACH STRUCTURE ALONG WITH HAVING POSITIVE DRAINAGE
9. ADDITIONAL ESC MEASURES SHALL BE INSTALLED AS REQUIRED BY OWNER. ALL DEQ PERMIT CONDITIONS SHALL BE MET AND GIVEN PARCEL, THE SAFETY FENCE SHALL BE REMOVED.
CHECKED BY:
DOWNSTREAM. INSTALL INLET PROTECTION WITH EACH NEW INLET STRUCTURE AND MAINTAIN UNTIL THE UPLAND AREA IS
MAINTAINED THROUGHOUT THE DURATION OF THE PROJECT.
STABILIZED. SHEET TITLE
19. CONTRACTOR SHALL REMOVE ANY OBSTRUCTIONS THAT LIE WITHIN THE TEMPORARY CONSTRUCTION EASEMENT AND SHALL
10. CONTRACTOR SHALL PERFORM MAINTENANCE OF TRAFFIC (MOT) FOR LANE CLOSURES WITH CERTIFIED FLAGGERS WHEN REPLACE THEM AT PROJECT COMPLETION IN ACCORDANCE WITH EASEMENT AGREEMENTS.
8. CONTINUE INSTALLING CULVERTS AND DROP INLET STRUCTURES UP TO THE EXISTING STMH-2 AS SHOWN ON THE PLANS.
PERFORMING WORK ADJACENT TO OR WITHIN THE PUBLIC ROADWAY IN ACCORDANCE WITH THE VDOT MUTCD AND THE LATEST
REVISION OF THE VIRGINIA WORK AREA PROTECTION MANUAL. 20. THE CONTRACTOR SHALL UTILIZE AREAS AS AVAILABLE WITHIN THE LIMITS OF THE TEMPORARY EASEMENTS UNTIL WORK IS
9. REMOVE SANITARY PUMP STATION AND RECONNECT RESIDENCE SEWER LATERAL TO THE SANITARY MAIN. DELIVER THE PUMP
COMPLETED AT CONTRACTORS EXPENSE. CONTRACTOR IS RESPONSIBLE FOR OBTAINING ANY PERMITS AND APPROVAL REQUIRED
STATION TO THE TOWN OF CHRISTIANSBURG.
11. AS THE STORM DRAIN INSTALLATION PROGRESSES THE CONTRACTOR SHALL GRADE AREAS TO FINISHED GRADE, APPLY TOPSOIL, AND FOR ANY NEEDED OFFSITE AREAS.
PERMANENTLY STABILIZE.
10. INSTALL CULVERTS AND DROP INLET STRUCTURES FOR STORM DRAINAGE BRANCH UP TO AND ACROSS MAIN STREET.
21. THE CONTRACTOR MAY NEGOTIATE STAGING AND LAY DOWN AREAS FOR CONSTRUCTION ACTIVITIES WITH THE ADJACENT
12. UPON STABILIZATION THE CONTRACTOR SHALL SCHEDULE A FINAL INSPECTION. NEIGHBORS OR MAKE OTHER ARRANGEMENTS FOR OFFSITE LOCATIONS.
11. INSTALL FINAL PAVEMENT ON ALL DISTURBED ROADWAY, DRIVEWAY AND PARKING LOT SECTIONS.
13. REMAINING ESC MEASURES SHALL NOT BE REMOVED UNTIL THE LAST STAGE OF CONSTRUCTION.
12. PERMANENTLY SEED AND MULCH DENUDED AREA.
SHEET OF