PL03_G-03.pdf

DRAWING NUMBER PLATE

SCALE: DATE: SHEET:

WASHINGTON AQUEDUCT

WASHINGTON, DC

MAINTENANCE AND IMPROVEMENTS

MARCH 2022

SECOND HIGH RESERVOIR

Nova Consulting

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

STEVEN S. EAGLE, PE

NO SCALE

80.2-2.7-03 03

G-03

GENERAL

GENERAL NOTES

GENERAL NOTES

1. REFER TO CIVIL, STRUCTURAL, MECHANICAL, AND ELECTRICAL DRAWINGS FOR

ADDITIONAL GENERAL NOTES, ABBREVIATION AND SYMBOLS.

2. MATERIALS AND SYSTEMS NOTES ARE TYPICAL IN NATURE AND APPLY TO

MULTIPLE DRAWINGS. NOTES ON ANY DRAWING ARE TO BE APPLIED TO ALL

SIMILAR MATERIALS AND SYSTEMS UNLESS NOTED OTHERWISE.

3. ACTUAL SITE CONDITIONS MAY DIFFER FROM THOSE SHOWN ON THE DRAWINGS.

CONTACT THE GOVERNMENT IF A DISCREPANCY IS FOUND.

4. EXISTING UTILITY LOCATIONS AND PROPOSED EASEMENT AND RIGHT-OF-WAY

BOUNDARIES ARE APPROXIMATE ONLY AND ARE BASED ON BEST AVAILABLE

DATA. CONTRACTOR SHALL FIELD VERIFY THESE LOCATIONS AND ELEVATIONS,

AND IDENTIFY ANY UTILITIES NOT SHOWN IN THE DRAWINGS BEFORE

COMMENCING THE WORK. CONTACT MISS UTILITY AT 1-800-257-7777 AND

WASHINGTON AQUEDUCT FOR FIELD LOCATION OF EXISTING UTILITIES. THE

CONTRACTOR SHALL NOTIFY THE OWNER PRIOR TO THE BEGINNING OF ANY

CONSTRUCTION.

5. ALL DIMENSIONS AND ELEVATIONS SHOWN AND ALL EXISTING CONDITIONS ARE

APPROXIMATE AND SHALL BE VERIFIED BY THE CONTRACTOR PRIOR TO

STARTING WORK. THE CONTRACTOR SHALL VISIT THE SITE AND FAMILIARIZE

HIMSELF WITH ALL EXISTING CONDITIONS PRIOR TO BIDDING WORK.

6. IN CASE OF DISCREPANCIES BETWEEN DIMENSIONS AND SCALE, DIMENSIONS

GOVERN. DO NOT SCALE DRAWINGS.

7. THE CONTRACTOR SHALL PROTECT EXISTING TREES AS NECESSARY AND ONLY

REMOVE MARKED TREES OR AS DIRECTED BY THE GOVERNMENT. CONTRACTOR

SHALL NOT REMOVE ANY TREES UNTIL SPECIFIC APPROVAL FROM THE

GOVERNMENT HAS BEEN RECEIVED. CONTRACTOR SHALL BE RESPONSIBLE FOR

APPLYING AND OBTAINING ANY REQUIRED PERMIT.

8. WORK SHALL BE PERFORMED IN AN EXPEDITED MANNER SO AS TO MINIMIZE THE

TIME THE RESERVOIR IS OUT OF SERVICE.THE CONTRACTOR SHALL PLAN ALL

WORK TO BE COMPLETED DURING RESERVOIR OUTAGE, INCLUDING BUT NOT

LIMITED TO WORK ASSOCIATED WITH SAMPLE BUILDING, DRAINING, INSPECTIONS,

REPAIRS, OPERATIONAL TESTING UNDER WET CONDITIONS AND PUNCH LIST

ITEMS TO BE COMPLETED IN THE LOW DEMAND PERIOD (BETWEEN NOVEMBER

1ST TO MARCH 31ST, BOTH INCLUSIVE) SO THAT THE RESERVOIR IS OUT OF

SERVICE FOR NO MORE THAN NINETY (90) CALENDAR DAYS. THERE CAN ONLY BE

ONE RESERVOIR OUTAGE AND THE CONTRACTOR SHALL ENSURE THAT ALL WORK

INSIDE THE RESERVOIR INCLUDING PREFINAL AND FINAL INSPECTION BY THE

GOVERNMENT IS PERFORMED DURING THIS SINGLE OUTAGE

9. CONTRACTOR SHALL REQUEST CONTRACTING OFFICER REPRESENTATIVE TO

CONTACT DC WATER AT LEAST THIRTY (30) CALENDAR DAYS IN ADVANCE IN

ORDER TO REMOVE ANTENNA PRIOR TO THE DEMOLITION OF THE SAMPLE

BUILDING.

10. PRIOR TO COMMENCING WORK TO DEMOLISH THE SAMPLE BUILDING, THE

CONTRACTOR SHALL PROVIDE THE GOVERNMENT SIXTY (60) CALENDAR DAYS

NOTICE.

11. CONTRACTOR SHALL PAY ALL COSTS INCURRED IN CONNECTING, CONVERTING,

AND TRANSFERRING THE UTILITIES TO THE WORK, INCLUDING BUT NOT LIMITED

TO PROVIDING BACKFLOW-PREVENTING DEVICES ON CONNECTIONS TO

DOMESTIC WATER LINES; PROVIDING METERS; AND PROVIDING TRANSFORMERS;

AND MAKING DISCONNECTIONS. CONTRACTOR SHALL NOT TAP TO CITY FIRE

HYDRANTS FOR OBTAINING DOMESTIC WATER AND IS RESPONSIBLE FOR HIS OWN

WATER SUPPLY IF NEEDED. THE CONTRACTOR IS RESPONSIBLE PROCURING DC

WATER HYDRANT USE AND TRAFFIC USE PERMITS TO RUN HOSES TO THE

NEAREST HYDRANT.

12. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING WATER DISCHARGE

PERMIT FOR CONSTRUCTION WASH WATER FROM DCWATER. IN CASE RESERVOIR

DRAIN WATER HAS TO BE DISCHARGED INTO THE STORM SEWER, CONTRACTOR

SHALL ENSURE THAT IT MEETS THE WA GENERAL NPDES REQUIREMENTS.

CONTRACTOR IS RESPONSIBLE FOR SAMPLING AND TESTING REQUIREMENTS AS

DESCRIBED IN SPECIFICATION 01 57 19.

13. CONTRACTOR SHALL COORDINATE THE DRAINING AND THE SUPPLY OF FINISHED

WATER NECESSARY FOR FILLING, TESTING AND START-UP OF THE RESERVOIR

WITH THE WASHINGTON AQUEDUCT, AT LEAST THIRTY (30) CALENDAR DAYS IN

ADVANCE.

14. CONTRACTOR SHALL PROVIDE PERIMETER SITE SECURITY THROUGHOUT

CONSTRUCTION. AT A MINIMUM, CONTRACTOR SHALL INSTALL TEMPORARY

FENCING AND SIGNS ALONG LIMITS OF DISTURBANCE, WHERE EXISTING FENCE

HAS BEEN REMOVED FOR CONSTRUCTION ACTIVITIES OR AS DIRECTED BY THE

GOVERNMENT. TEMPORARY FENCING SHALL BE A SPECIFIC COMPONENT OF THE

CONTRACTOR'S WORK PLAN SUBMITTAL.

15. THE PROPOSED STAGING AREA AS SHOWN ON SHEET C-01 HAS TREES THAT

SHALL BE PROTECTED AT ALL TIMES. IF ADDITIONAL AREA IS REQUIRED, THE

CONTRACTOR MAY UTILIZE AREAS WITHIN THE PROPERTY LIMITS WITH PRIOR

APPROVAL FROM THE WASHINGTON AQUEDUCT. IF OFF-SITE STAGING AREA IS

REQUIRED FOR THE CONTRACTOR’S STAGING NEEDS, THEN THE CONTRACTOR

SHALL MAKE ALL NECESSARY ARRANGEMENTS AT NO ADDITIONAL COST TO THE

WASHINGTON AQUEDUCT.

16. CONTRACTOR SHALL CONFIRM THE BOUNDARY OF PROPERTY OWNERSHIP BY

THE WASHINGTON AQUEDUCT AND MAINTAIN ALL CONSTRUCTION ACTIVITIES

WITHIN THAT BOUNDARY.

17. IF EXISTING FACILITIES OR ANY PRIVATE OR GOVERNMENT PROPERTY IS

DAMAGED DURING THE COURSE OF THE WORK, THE CONTRACTOR SHALL REPAIR

TO THE SATISFACTION OF THE OWNER AT NO EXTRA COST TO THE GOVERNMENT.

18. ALL WORK SHALL CONFORM TO ALL APPLICABLE CODES, STANDARDS, AND

GOVERNING AUTHORITIES.

19. ALL CONCRETE REPAIR MATERIALS AND OTHER PRODUCTS USED FOR WORK

WITHIN THE RESERVOIR SHALL CONFORM TO NSF/ANSI 61 FOR CONTACT WITH

POTABLE WATER SUPPLIES.

20. THE ARCHITECT'S SELECTION OF FENCE MATERIALS AND DETAILS DOES NOT

RELIEVE THE CONTRACTOR FROM VERIFYING WITH THE FENCE MATERIAL

SUPPLIERS THAT THE PROPOSED FENCE MATERIALS ARE CORRECT AND PROPER

FOR THE INTENDED APPLICATION AND USE. PRIOR COORDINATION SHALL BE

MADE WITH THE WASHINGTON AQUEDUCT CHIEF OF SECURITY AND LAW

ENFORCEMENT ABOUT THE LATEST REQUIREMENTS FOR FENCE, CAMERA

SYSTEM AND RELATED WORK.

21. PROVIDE ACCESS PANELS REQUIRED FOR MECHANICAL, ELECTRICAL, PLUMBING,

AND FIRE PROTECTION EQUIPMENT.

22. CONTRACTOR SHALL KEEP THE ROADWAYS CLEAR AND CLEAN OF

CONSTRUCTION DEBRIS AND EQUIPMENT.

23. CONTRACTOR SHALL NOT STORE UNNECESSARY MATERIALS OR EQUIPMENT ON

THE JOB SITE AND SHALL TAKE CARE TO PREVENT ANY STRUCTURE FROM BEING

LOADED WITH A WEIGHT WHICH WILL ENDANGER ITS SECURITY OR THE SAFETY

OF PERSONS.

24. THE CONTRACTOR WORK SHALL COMPLY WITH LIMITS SPECIFIED IN THE DC NOISE

ORDINANCE.

25. UPON COMPLETION OF THE WORK, THE CONTRACTOR IS RESPONSIBLE FOR

REMOVING ALL MATERIAL, EQUIPMENT AND DEBRIS, AND RESTORING THE SITE TO

ITS ORIGINAL CONDITION.

26. THE CONTRACTOR SHALL PLAN FOR LEAKAGE THROUGH VALVES, JOINT LEAKS IN

MAINS, ROOF AND WALLS, AND SHALL HAVE THE NECESSARY PUMPS AND LINES

AVAILABLE SO AS NOT TO ALLOW ANY LEAKAGE TO IMPEDE PROJECT PROGRESS.

27. IT HAS BEEN DETERMINED THAT THE RESERVOIR HAS INFILTRATION WHEN IT IS

EMPTY. THE CONTRACTOR SHALL ASSUME WET WORKING CONDITIONS INSIDE

THE RESERVOIR.

28. THE CONTRACTOR SHALL PROCURE ALL NECESSARY PERMITS FOR STREET

OPENINGS, TRAFFIC CONTROL, AND SEDIMENT AND EROSION CONTROL RELATED

TO PERFORMING EXCAVATION IN THE VICINITY OF THE RESERVOIR FOR WORK

UNDER THIS CONTRACT. THE CONTRACTOR SHALL COMPLY WITH THE

PROVISIONS OF THESE PERMITS.

29. THE ACQUISITION OF A DDOT/URBAN FORESTRY DIVISION SPECIAL TREE

REMOVAL PERMIT MAY BE REQUIRED FOR ANY TREE REMOVAL. THE REMOVAL OF

TREES GREATER OR EQUAL TO 100 INCHES IN CIRCUMFERENCE IS PROHIBITED.

30. ALL EROSION CONTROL MEASURES SHALL BE INSPECTED IMMEDIATELY

FOLLOWING INITIAL INSTALLATION, WEEKLY THEREAFTER, AND WITHIN 24 HOURS

AFTER A RAINFALL EVENT PRODUCING 1/2 INCH OR GREATER OF RAIN. MEASURES

SHALL BE REPAIRED OR REPLACED AS NECESSARY.

PROJECT DESCRIPTION

THE PROJECT INVOLVES MAINTENANCE AND IMPROVEMENTS WORK TO THE SECOND

HIGH RESERVOIR. THE CONTRACTOR SHALL PROCURE ALL NECESSARY PERMITS FOR

STREET OPENINGS, TRAFFIC CONTROL, EROSION AND SEDIMENT CONTROL AND ANY

OTHER WORK RELATED TO PERFORMING WORK UNDER THIS CONTRACT. THE

CONTRACTOR SHALL COMPLY WITH THE PROVISIONS OF THESE PERMITS AT ALL

TIMES. THE CONTRACTOR SHALL ALSO BE RESPONSIBLE FOR INSTALLING

TEMPORARY CONSTRUCTION ENTRANCE, TREE PROTECTION FENCE, ALL PERIMETER

SOIL EROSION AND SEDIMENT CONTROL DEVICES, AND SILT FENCE AS SHOWN ON

PLAN PRIOR TO ANY SITE DISTURBANCE OR CONSTRUCTION. THE MAJOR FEATURES

OF THIS PROJECT INCLUDE THE FOLLOWING:

1. SITE WORK INCLUDING BUT NOT LIMITED TO INSTALLATION OF SUB-DRAINAGE

SYSTEM ON TOP OF THE ROOF WITH DRAIN INTO AIR-GAP CHAMBER,

CONNECTION OF SUBDRAIN SYSTEM TO 8-INCH PVC DRAIN AND ELECTRICAL SITE

WORK.

2. DEMOLITION OF EXISTING AND INSTALLATION OF NEW 24-INCH TERRA COTTA

DRAIN LINE, VALVE, STEM AND ACTUATOR AND ADDITION OF A REDUNDANT

DRAIN VALVE ON NEW 24-INCH DRAIN LINE OUTSIDE RESERVOIR.

3. DEMOLITION OF EXISTING AND CONSTRUCTION OF NEW SAMPLE BUILDING

CONSISTING OF TWO COMPARTMENTS. ONE COMPARTMENT SHALL BE

MECHANICALLY VENTILATED AND DESIGNED TO BE FREE OF CHLORINE FUMES

AND HOUSE THE SCADA, ELECTRICAL AND SECURITY EQUIPMENT, AND THE

OTHER COMPARTMENT SHALL CONTAIN THE ACCESS HATCHES AND HOUSE

SAMPLING EQUIPMENT. THE NEW SAMPLE BUILDING SHALL HAVE NO

ATTACHMENTS AND ALL PENETRATIONS SHALL BE SUBSURFACE.

4. REPAIR WORK ASSOCIATED WITH EXISTING AREA ON THE WEST SIDE OF THE

RESERVOIR INCLUDING BUT NOT LIMITED TO FILLING WITH SUITABLE MATERIAL

TO MATCH PROPOSED GRADE AND PLACING SOD.

5. JOINT STRUCTURAL INSPECTION OF THE INTERIOR OF THE RESERVOIR WITH THE

WASHINGTON AQUEDUCT AND THEIR A/E FIRM.CONTRACTOR SHALL BE

RESPONSIBLE FOR ALL SECURITY AND SAFETY PROTOCOLS FOR WORK WITHIN A

CONFINED SPACE. ENTRY SPACE INCLUDING BUT NOT LIMITED TO AIR

MONITORING, CSE, BLOWERS, ETC, NEEDED TO PERFORM THIS INSPECTION. THIS

INSPECTION SHALL BE COORDINATED WITH THE GOVERNMENT AT LEAST FIFTEEN

(15) CALENDAR DAYS IN ADVANCE AND SHALL TAKE PLACE AS SOON AS THE

RESERVOIR IS TAKEN OUT OF SERVICE. THE OBJECTIVE OF THIS INSPECTION IS

TO VERIFY AND CONFIRM TYPES AND QUANTITIES OF CONCRETE REPAIRS

NEEDED.

6. CONTRACTOR WILL BE RESPONSIBLE FOR DRAINING THE RESERVOIR IN

COORDINATION WITH THE WASHINGTON AQUEDUCT. CONTRACTOR SHALL

SUBMIT A RESERVOIR DRAINING AND DECHLORINATION PLAN DESCRIBING

DECHLORINATION, DRAINAGE AND DISCHARGE PROTOCOLS NO LATER THAN

FIFTEEN (15) CALENDAR DAYS AFTER NTP AND OBTAIN APPROVAL FROM THE

WASHINGTON AQUEDUCT PRIOR TO RESERVOIR OUTAGE COORDINATION.

DECHLORINATION AND DISCHARGE ACTIVITIES SHALL BE IN COMPLIANCE WITH

NPDES PERMITTING REQUIREMENTS, (REFER TO SPECIFICATION 01 57 19 FOR

PERMITTING REQUIREMENTS).

7. CONCRETE REPAIRS ALONG CEILING, FLOOR, WALLS, COLUMNS AND JOINTS

INSIDE THE RESERVOIR INCLUDING TAPING OF FLOOR JOINTS. THIS WORK

INCLUDES HANDLING AND DISPOSAL OF CONSTRUCTION JOINT MATERIAL THAT

HAS BEEN DETERMINED TO CONTAIN ASBESTOS.

8. MECHANICAL UPGRADES INSIDE THE RESERVOIR, INCLUDING BUT NOT LIMITED

TO, INSTALLATION AND TESTING OF NEW BUTTERFLY VALVE, MIXERS,

SUBMERSIBLE LEVEL TRANSDUCERS AND PIPES.

9. DISINFECTING AND REFILLING OF THE RESERVOIR IN ACCORDANCE WITH AWWA

C652-11, SEC 4.3. THE CONTRACTOR SHALL OBTAIN PRIOR APPROVAL FROM

WASHINGTON AQUEDUCT NO LATER THAN FIFTEEN (15) CALENDAR DAYS FROM

NTP FOR THE METHOD TO BE APPLIED. THE CONTRACTOR SHALL ENSURE THAT

ALL AREAS OF THE RESERVOIR WHERE WORK WAS CONDUCTED AND WHERE

POSSIBLY WERE CONTAMINATED BY THE WORK INSIDE THE RESERVOIR ARE

DISINFECTED, INCLUDING BUT NOT LIMITED TO CONTROL VALVES, WALL PIPES,

DRAIN LINES, AND INFLUENT AND EFFLUENT MAINS, AS APPLICABLE.

10. CLEANING OF THE FLOOR INSIDE THE RESERVOIR AND ANY OTHER AREAS THAT

ARE AFFECTED BY CONTRACTOR'S ACTIVITIES USING POTABLE WATER IN

ACCORDANCE WITH AWWA C-652-11, SEC 4.1. THE CONTRACTOR SHALL

PRESSURE WASH WITH PRESSURE NOT EXCEEDING 2,500 PSI AND SHALL

DECREASE THE PRESSURE AS NEEDED SO AS NOT TO CAUSE DAMAGE TO THE

RESERVOIR. WASH WATER DISPOSAL SHALL FOLLOW SPECIFICATION 01 57 19

AND SHALL BE IN ACCORDANCE WITH NPDES PERMIT REQUIREMENTS.

11. DECHLORINATION AND MAINTAINING COMPLIANCE WITH NPDES (PERMIT NUMBER

DC0000019), INCLUDING SAMPLING AND TESTING PRIOR TO DISCHARGE DURING

DRAINING OF THE RESERVOIR.

12. INSTALLATION OF A NEW BUG/RODENT SCREEN ON THE DIP DISCHARGE LINE

INSIDE THE AIR-GAP CHAMBER.

13. WATERPROOFING MEMBRANE REPAIRS TO AREAS BENEATH THE NEW SAMPLE

BUILDING.

14. INSTALLATION OF A 4-INCH DISCHARGE LINE FROM SAMPLE WATER DISCHARGE

TO AN EXISTING SANITARY SEWER MANHOLE LOCATED AT WARREN STREET NW.

15. INSTALLATION OF UTILITY POLE AND YAGI POLE TYPE ANTENNA.

16. DEMOLITION OF THE EXISTING CHAIN LINK FENCE AND GATES AND INSTALLATION

OF THE NEW 8-FOOT HIGH PICKET FENCE AND GATES IN A MANNER SO THAT

SECOND HIGH RESERVOIR IS NEVER WITHOUT A SECURE FENCE, AND THAT THE

SECURITY CAMERA SYSTEM (LOCATED ON INDEPENDENT POLES JUST INSIDE

THE EXISTING FENCE LINE) ARE NOT DISTURBED, IMPACTED OR DAMAGED.

CONTRACTOR SHALL ENSURE THAT NO GAP IN FENCING SHALL BE LEFT

UNATTENDED AT ANY TIME AND THE CONTRACTOR SHALL VERIFY AT THE END OF

EACH WORK DAY THAT NO GAP EXISTS THAT COMPROMISES THE SECURITY OF

THE RESERVOIR. TEMPORARY FENCING SHALL BE INSTALLED, REPAIRED AND

UTILIZED AS REQUIRED AT NO ADDITIONAL COST TO THE OWNER.

17. SALVAGED SECURITY EQUIPMENT MUST BE REINSTALLED BY THE

GOVERNMENT'S SECURITY CONTRACTOR AND SHALL BE COMPLETED AND

TESTED PRIOR TO THE END OF THE WORK ON THIS CONTRACT. THE

CONTRACTOR SHALL ENSURE THAT THERE IS NO LAPSE IN SITE SECURITY

COVERAGE AT ANY TIME DURING THIS CONTRACT. THE CONTRACTOR SHALL

COORDINATE THE REQUIRED REINSTALLATION AND RETESTING WITH A MINIMUM

OF THIRTY (30) CALENDAR DAYS NOTICE AND PRIOR TO COMPLETION OF THE

WORK IN THIS CONTRACT.

18. RESTORATION OF DISTURBED AREAS TO ORIGINAL OR BETTER CONDITIONS,

INCLUDING BUT NOT LIMITED TO SODDING, SIDEWALK AND PAVEMENT REPAIRS,

PEDESTRIAN WALKWAYS, ETC.

19. CLOSE-OUT ACTIVITIES INCLUDING BUT NOT LIMITED TO REMOVAL OF EROSION

AND SEDIMENT CONTROL, TESTING AND COMMISSIONING TO THE SATISFACTION

OF THE GOVERNMENT, PRE-FINAL INSPECTION, CORRECTIVE WORK IF

APPLICABLE BASED ON GOVERNMENT INSPECTION, AS-BUILT SUBMITTAL,

PREPARATION OF PUNCH LIST, SUBMISSION OF INSTALLED EQUIPMENT AND

DEMOBILIZATION.

20. ANY INCIDENTAL WORK ASSOCIATED WITH THE PROJECT DESCRIPTION

DESCRIBED ABOVE.

CONSTRUCTION SEQUENCE

THE FOLLOWING CONSTRUCTION SEQUENCE IS SUGGESTED FOR THIS PROJECT.

THIS IS NOT ALL-INCLUSIVE AS MAY NOT INCLUDE ALL CONSTRUCTION ACTIVITIES

ASSOCIATED WITH THIS PROJECT. THE CONTRACTOR IS RESPONSIBLE FOR

DEVELOPING A CONSTRUCTION SEQUENCING AND SCHEDULE BASED ON EXISTING

CONDITIONS ENCOUNTERED.

PHASE I – MOBILIZATION

1. INSTALL TEMPORARY CONSTRUCTION ENTRANCE, TREE PROTECTION FENCE, ALL

PERIMETER SOIL EROSION AND SEDIMENT CONTROL DEVICES, AND SILT FENCE AS

SHOWN ON PLAN, PRIOR TO ANY SITE DISTURBANCE OR CONSTRUCTION.

2. ALL EROSION CONTROL MEASURES SHALL BE INSPECTED IMMEDIATELY

FOLLOWING INITIAL INSTALLATION, WEEKLY THEREAFTER, AND WITHIN 24 HOURS

AFTER EACH RAINFALL EVENT PRODUCING 1/2 INCH OR GREATER OF RAIN.

MEASURES SHALL BE REPAIRED OR REPLACED AS NECESSARY.

3. CONTRACTOR TO ENSURE THAT THE EXISTING SAMPLE BUILDING, CONTROL

SYSTEM AND RELATED DEVICES, SECURITY SYSTEM AND RELATED DEVICES,

ACCESS CONTROLS AND ALL SITE UTILITIES REMAIN IN SERVICE AT ALL TIMES THAT

THE SECOND HIGH RESERVOIR IS IN SERVICE. THIS IS AN ABSOLUTE REQUIREMENT

AND SUPERSEDES ANY OTHER PROVISION OF THESE CONTRACT DOCUMENTS

RELATED TO ALLOWABLE OUTAGES. COORDINATION WITH THE GOVERNMENT

SHALL BE PERFORMED TO SUFFICIENTLY PLAN FOR REQUIRED OUTAGES AND TO

ENSURE THAT THE ASSOCIATED WORK IS COMPLETED WHILE THE SECOND HIGH

RESERVOIR IS OUT OF SERVICE.

PHASE II – WORK PRIOR TO RESERVOIR OUTAGE

1. ONCE PERIMETER AND INLET PROTECTION MEASURES HAVE BEEN INSTALLED,

CONTRACTOR SHALL BEGIN SUBDRAINAGE TRENCH EXCAVATION

2. THE CONTRACTOR SHALL PERFORM SITE WORK PRIOR TO TAKING THE RESERVOIR

OUT OF SERVICE, INCLUDING BUT NOT LIMITED TO, INSTALLATION OF

SUB-DRAINAGE SYSTEM WITH DRAIN INTO AIR-GAP CHAMBER, CONNECTION OF

SUBDRAIN SYSTEM TO 8-INCH PVC DRAIN, AND ELECTRICAL SITE WORK.

3. PLUGGING EXISTING DRAIN, AIRGAP SHEETING/SHORING, CONSTRUCTION OF NEW

AIRGAP STRUCTURE AND INSTALLATION OF NEW 24-INCH DIP, 24-INCH HDPE

OVERFLOW PIPE, PVC PIPING AND 24-INCH BUTTERFLY VALVE.

4. CONTRACTOR SHALL PERFORM REPAIR WORK ASSOCIATED WITH APPROXIMATELY

70 SY OF EXISTING AREA ON THE WEST SIDE OF THE RESERVOIR INCLUDING BUT

NOT LIMITED TO FILLING WITH SUITABLE MATERIAL TO MATCH PROPOSED GRADE

AND PLACING SOD.

5. SURPLUS SOIL FROM SUB-DRAIN INSTALLATION SHALL BE HAULED AWAY AS

NECESSARY.

6. THE CONTRACTOR SHALL INFORM THE GOVERNMENT AT LEAST SIXTY (60)

CALENDAR DAYS IN ADVANCE AND OBTAIN PRIOR APPROVAL FROM THE

GOVERNMENT, PRIOR TO COMMENCING WORK INSIDE THE RESERVOIR.

7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DECHLORINATION AND

MAINTAINING COMPLIANCE WITH NPDES (PERMIT NUMBER DC0000019), INCLUDING

SAMPLING AND TESTING PRIOR TO DISCHARGE DURING DRAINING OF THE

RESERVOIR.

PHASE III – WORK INSIDE THE RESERVOIR DURING OUTAGE (TO BE PERFORMED

BETWEEN NOVEMBER 1 AND MARCH 31 WHILE NOT EXCEEDING A TOTAL OF 90

CALENDAR DAYS)

1. CONTRACTOR SHALL BE RESPONSIBLE FOR DRAINING OF THE RESERVOIR IN

COORDINATION WITH THE WASHINGTON AQUEDUCT, AT LEAST THIRTY (30)

CALENDAR DAYS IN ADVANCE.

2. THE CONTRACTOR SHALL FACILITATE A JOINT STRUCTURAL INSPECTION WITH THE

WASHINGTON AQUEDUCT AND THEIR A/E FIRM. CONTRACTOR WILL BE

RESPONSIBLE FOR ALL SECURITY AND SAFETY PROTOCOLS (I.E., AIR MONITORING,

CSE, BLOWERS, ETC) NEEDED TO UNDERTAKE THIS INSPECTION. STRUCTURAL

INSPECTION WILL TAKE PLACE AS SOON AS THE RESERVOIR IS TAKEN OUT OF

SERVICE AND IS AIMED AT VERIFYING ACTUAL TYPES AND QUANTITIES OF REPAIRS

NEEDED.

3. THE CONTRACTOR SHALL PERFORM CONCRETE REPAIRS ALONG CEILING, FLOOR,

WALLS, COLUMNS AND JOINTS INSIDE THE RESERVOIR.

4. THE CONTRACTOR SHALL PERFORM MECHANICAL UPGRADES INSIDE THE

RESERVOIR, INCLUDING BUT NOT LIMITED TO, INSTALLATION AND TESTING OF NEW

BUTTERFLY VALVE, MIXERS AND PIPES.

5. THE CONTRACTOR SHALL ALSO BE RESPONSIBLE FOR CLEANING THE FLOOR

INSIDE THE RESERVOIR AND ANY OTHER AREAS THAT ARE AFFECTED BY THEIR

ACTIVITIES USING POTABLE WATER IN ACCORDANCE WITH AWWA C-652-11, SEC 4.1.

THE CONTRACTOR SHALL PRESSURE WASH WITH PRESSURE NOT EXCEEDING 2,500

PSI AT ANY TIME AND SHALL DECREASE THE PRESSURE AS NEEDED SO AS NOT TO

CAUSE DAMAGE TO THE RESERVOIR. THE WATER USED FOR CLEANING NEEDS TO

BE REMOVED FROM THE RESERVOIR IN ACCORDANCE WITH SECTION 01 57 19

TEMPORARY ENVIRONMENTAL CONTROLS, AND ANY OTHER APPLICABLE PERMIT

CONDITIONS.

6. THE CONTRACTOR IS RESPONSIBLE FOR DISINFECTING AND REFILLING OF THE

RESERVOIR IN ACCORDANCE WITH C-652-11, SEC 4.3. THE CONTRACTOR SHALL

ADHERE TO METHOD 1 AND ANY DEVIATION FROM THIS SHALL BE SUBMITTED BY

THE CONTRACTOR AS A REQUEST FOR APPROVAL BY THE GOVERNMENT. THE

CONTRACTOR SHALL OBTAIN PRIOR APPROVAL FROM WASHINGTON AQUEDUCT NO

LATER THAN FIFTEEN (15) CALENDAR DAYS FROM NTP FOR THE METHOD TO BE

APPLIED. THE CONTRACTOR SHALL ENSURE THAT ALL COMPONENTS OF THE

RESERVOIR POSSIBLY CONTAMINATED BY THE WORK INSIDE THE RESERVOIR NEED

TO BE DISINFECTED, INCLUDING BUT NOT LIMITED TO CONTROL VALVES, WALL

PIPES, DRAIN LINES, AND INFLUENT AND EFFLUENT MAINS, AS APPLICABLE.

7. THE CONTRACTOR SHALL COMPLETE WORK ASSOCIATED WITH NEW SAMPLE

BUILDING, INCLUDING BUT NOT LIMITED TO BRICKWORK, ELECTRICAL, HVAC AND

PAINTING.

8. CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLATION OF UTILITY POLE AND

YAGI POLE TYPE ANTENNA.

9. REMOVE EXISTING SIDEWALK AND REPLACE IT WITH A NEW SIDEWALK

CONNECTING TO THE EXISTING SAMPLE BUILDING AND STAIRS.

10. CONTRACTOR SHALL REPAIR THE WATERPROOFING MEMBRANE BENEATH THE

NEW SAMPLE BUILDING AS SHOWN IN THE DRAWINGS.IN THE EVENT OF ANY OTHER

DAMAGE TO THE WATERPROOFING MEMBRANE AS A RESULT OF CONSTRUCTION

ACTIVITIES, THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING THE

REPAIRS AT NO ADDITIONAL COST TO THE GOVERNMENT.

11. THE CONTRACTOR SHALL PLAN ALL WORK INSIDE THE RESERVOIR INCLUDING

DRAINING, INSPECTIONS, REPAIRS, OPERATIONAL TESTING UNDER WET

CONDITIONS, POTENTIAL CORRECTIVE WORK AFTER PRELIMINARY WALKTHROUGH,

FINAL WALKTHROUGH, PUNCH LIST ITEMS FILLING OF RESERVOIR, CHLORINATION

AND DEMOBILIZATION TO BE COMPLETED IN THE LOW DEMAND PERIOD (BETWEEN

NOVEMBER 1ST TO MARCH 31ST, BOTH INCLUSIVE) SO THAT THE RESERVOIR IS

OUT OF SERVICE FOR NO MORE THAN NINETY (90) CALENDAR DAYS. THE

CONTRACTOR MAY BE REQUIRED TO CONDUCT 16-HOUR DAYS, EITHER THROUGH

DOUBLE SHIFTS OR THROUGH MULTIPLE CREWS, AS APPLICABLE AND APPROVED

BY WASHINGTON AQUEDUCT WHILE BEING COMPLIANT WITH LOADING LIMITS ON

THE RESERVOIR. THE CONTRACTOR SHALL INFORM AND OBTAIN PRIOR APPROVAL

FROM WASHINGTON AQUEDUCT AND THEIR A/E AT LEAST SIXTY (60) CALENDAR

DAYS IN ADVANCE BEFORE SCHEDULING WORK INSIDE THE RESERVOIR.

12. CONTRACTOR SHALL BE RESPONSIBLE FOR COORDINATING THE SUPPLY OF

FINISHED WATER NECESSARY FOR FILLING, TESTING AND START-UP OF THE

RESERVOIR WITH THE WASHINGTON AQUEDUCT, AT LEAST THIRTY (30) CALENDAR

DAYS IN ADVANCE.

31. CONTRACTOR TO ENSURE THAT THE EXISTING SAMPLE BUILDING, CONTROL

SYSTEM AND RELATED DEVICES, SECURITY SYSTEM AND RELATED DEVICES,

ACCESS CONTROLS AND ALL SITE UTILITIES REMAIN IN SERVICE AT ALL TIMES

THAT THE SECOND HIGH RESERVOIR IS IN SERVICE. THIS IS AN ABSOLUTE

REQUIREMENT AND SUPERSEDES ANY OTHER PROVISION OF THESE CONTRACT

DOCUMENTS RELATED TO ALLOWABLE OUTAGES. COORDINATION WITH THE

GOVERNMENT SHALL BE PERFORMED TO SUFFICIENTLY PLAN FOR REQUIRED

OUTAGES AND TO ENSURE THAT THE ASSOCIATED WORK IS COMPLETED WHILE

THE SECOND HIGH RESERVOIR IS OUT OF SERVICE.

32. CONTRACTOR SHALL RESTORE DISTURBED AREAS TO ORIGINAL OR BETTER

CONDITION .

33. SANDBLASTING CANNOT BE PERFORMED INSIDE THE RESERVOIR UNDER ANY

CIRCUMSTANCES.

34. NO WORK TO BE PERFORMED DURING FEDERAL HOLIDAYS AS ESTABLISHED BY

THE FEDERAL LAW (5 U.S.C. 6103). THE LIST OF FEDERAL HOLIDAYS CAN BE

ACCESSED FROM THE U.S. OFFICE OF PERSONNEL MANAGEMENT (OPM)

WEBSITE THROUGH THE FOLLOWING LINK -

(https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/). THE

CONTRACTOR SHALL NOTIFY WASHINGTON AQUEDUCT AT LEAST 15 CALENDAR

DAYS PRIOR TO THE HOLIDAY AND RECEIVE APPROVAL IF THEY NEED TO

PERFORM WORK ON THE FEDERAL HOLIDAYS

35. THE OWNER SHALL HAVE THE AUTHORITY TO ORDER WORK STOPPED OR

PROHIBITED THAT WOULD IN HIS OPINION, UNREASONABLY RESULT IN

INTERRUPTING THE NECESSARY FUNCTIONS OF THE PLANT OPERATIONS.

36. PARKING FOR PERSONAL VEHICLES OF CONSTRUCTION PERSONNEL SHALL NOT

BE ALLOWED ALONG VAN NESS ST NW. THE GENERAL CONTRACTOR SHALL BE

RESPONSIBLE FOR PROVIDING ACCESS TO AND FOR PREPARING AND

MAINTAINING/APPROVED PARKING AREAS.

SAFETY REQUIREMENTS

1. ALL WORK IN THE INTERIOR OF THE RESERVOIR IS CONSIDERED WORK WITHIN

PERMIT REQUIRED CONFINED SPACE AND THE CONTRACTOR SHALL BE

RESPONSIBLE FOR ALL PERMIT ACQUISITION, COMPLIANCE AND SAFETY

REQUIREMENTS, AS WELL AS ARRANGING SUITABLE LIGHTING, VENTILATION,

MOISTURE CONTROL, ETC, TO COMPLETE THE WORK. REFER TO USACE'S EM

385-1-1, SECTION 34 (AND OSHA GENERAL INDUSTRY 1910.146) FOR SPECIFIC

DETAILS.

2. WHEN PREPARING FOR CONFINED SPACE WORK, CONTRACTOR SHALL TEST FOR

SIGNIFICANTLY HIGH LEVELS OF CHLORINE AS PART OF THE REQUIRED

MULTI-GAS METER TESTING.

3. AS PART OF EM 385-1-1, CONTRACTOR SHALL COMPLETE AND SUBMIT FORM A-02

ACCIDENT PREVENTION PLAN CHECKLIST AT OR BEFORE THE

PRE-CONSTRUCTION MEETING.

SECURITY INSTRUCTION NOTES

1. THE WASHINGTON AQUEDUCT AND ASSOCIATED PROPERTIES ARE CONSIDERED

SECURE SITES. THE CONTRACTOR SHALL PROVIDE PERSONNEL INFORMATION,

COMPLY WITH SECURITY POLICIES, AND MAINTAIN SECURE ACCESS TO THE SITE

AT ALL TIMES.

2. THE CONTRACTOR SHALL ACCESS THE SITE THROUGH THE CARD READER

SLIDING GATE AND KEEP THE GATE LOCKED, IF NOT IN USE, AT ALL TIMES.

3. ALL CONTRACTORS AND SUBCONTRACTORS ARE REQUIRED TO BE US CITIZENS

OR LEGAL US RESIDENTS. THE AT/OPSEC REQUIREMENTS IN THE SOLICITATION

ALSO APPLY, INCLUDING THE E-VERIFY PROGRAM. FOREMAN IS REQUIRED TO

COMPLETE FORM DA 1999 WITH IDENTITY OF ALL INDIVIDUALS ENTERING AND

EXITING THE SITE. THESE FORMS ARE TO BE SUBMITTED TO WASHINGTON

AQUEDUCT'S CHIEF OF SECURITY AND LAW ENFORCEMENT ON A WEEKLY BASIS.

4. THE CONTRACTOR SHALL COORDINATE THE DEMOLITION AND REPLACEMENT OF

THE EXISTING FENCE AND GATES IN A MATTER THAT AT NO TIME THE SECOND

HIGH RESERVOIR IS WITHOUT A SECURE FENCE. NO GAP SHALL BE LEFT

UNATTENDED AT ANY TIME AND THE CONTRACTOR SHALL VERIFY AT THE END OF

THE WORK DAY THAT NO GAP EXISTS THAT COMPROMISES THE SECURITY OF

THE RESERVOIR. TEMPORARY FENCING SHALL BE INSTALLED AND UTILIZED AS

REQUIRED AT NO ADDITIONAL COSTS TO THE GOVERNMENT.

TEMPORARY POWER

1. CONTRACTOR TO COORDINATE AND REQUEST APPROVAL FROM WASHINGTON

AQUEDUCT AT LEAST FIFTEEN (15) CALENDAR DAYS IN ADVANCE BEFORE

DISCONNECTING POWER, NETWORK AND PHONE SERVICES TO THE SAMPLE

BUILDING.

2. IF TEMPORARY POWER WILL BE REQUIRED ON THE PROJECT SITE, PROVIDE A

TEMPORARY POWER PLAN AND SKETCH REQUIREMENT FOR GOVERNMENT

REVIEW AND ACCEPTANCE AT LEAST THIRTY (30) CALENDAR DAYS IN ADVANCE.

SEALANT NOTES

1. SEAL EXTERIOR JOINTS AROUND DOORS, WINDOWS AND LOUVER FRAMES AND

PENETRATIONS OF MECHANICAL, ELECTRICAL, AND PLUMBING ELEMENTS TO

PREVENT AIR INFILTRATION AND WATER LEAKAGE.

2. ALL SEALANT JOINTS SHALL BE SIZED AS RECOMMENDED BY MANUFACTURER IN

THEIR INSTALLED POSITION.

3. ALL SEALANT JOINTS SHALL MAINTAIN CONTACT WITH THE ADJOINING PARTS

WITHIN ALLOWABLE DIMENSIONED CHANGES IN THE JOINT SIZE. ALL SEALANT

JOINTS SHALL MAINTAIN DURABILITY AND INTEGRITY UNDER ALL SPECIFIED

CONDITIONS AND CONDITIONS OF THE LOCALITY WHERE THE PROJECT IS

LOCATED.

4. ALL SEALANTS SHALL BE INSTALLED WITH APPROPRIATE JOINT FILLER.

5. PROVIDE CUSTOM COLORS FOR SEALANTS EXPOSED TO VIEW, AS SELECTED BY

THE OWNER'S REPRESENTATIVE.

6. ALL EXPOSED JOINTS SUBJECT TO MOVEMENT ARE TO HAVE CONCEALED

BACKUP WITH CAPTIVE SEALANT AND JOINT FILLER OR BOND BREAKER TAPE IN

ACCORDANCE WITH SEALANT MANUFACTURER'S MINIMUM PUBLISHED

REQUIREMENTS.

7. ALL JOINTS TO BE BACKED UP BY PROPERLY SIZED CLOSED CELL BACKER ROD.

8. AREAS OF JOINT WORK SHALL BE COMPLETELY DRY PRIOR TO ADDING AND/OR

REPLACING THE JOINT FILLER.

PHASE IV – CLOSEOUT

1. DEMOLITION OF THE EXISTING CHAIN LINK FENCE AND GATES AND INSTALLATION

OF THE NEW 8-FOOT HIGH PICKET FENCE AND GATES IN A MANNER SO THAT

SECOND HIGH RESERVOIR IS NEVER WITHOUT A SECURE FENCE, AND THAT THE

SECURITY CAMERA SYSTEM (LOCATED ON INDEPENDENT POLES JUST INSIDE THE

EXISTING FENCE LINE) ARE NOT DISTURBED, IMPACTED OR DAMAGED.

CONTRACTOR SHALL ENSURE THAT NO GAP IN FENCING SHALL BE LEFT

UNATTENDED AT ANY TIME AND THE CONTRACTOR SHALL VERIFY AT THE END OF

EACH WORK DAY THAT NO GAP EXISTS THAT COMPROMISES THE SECURITY OF THE

RESERVOIR. TEMPORARY FENCING SHALL BE INSTALLED, REPAIRED AND UTILIZED

AS REQUIRED AT NO ADDITIONAL COST TO THE GOVERNMENT.

2. SALVAGED SECURITY EQUIPMENT MUST BE REINSTALLED BY THE GOVERNMENT'S

SECURITY CONTRACTOR AND SHALL BE COMPLETED AND TESTED PRIOR TO THE

END OF THE WORK ON THIS CONTRACT. THE CONTRACTOR SHALL ENSURE THAT

THERE IS NO LAPSE IN SITE SECURITY COVERAGE AT ANY TIME DURING THIS

CONTRACT. THE CONTRACTOR SHALL COORDINATE THE REQUIRED

REINSTALLATION AND RETESTING WITH A MINIMUM OF THIRTY (30) CALENDAR DAYS

NOTICE AND PRIOR TO COMPLETION OF THE WORK IN THIS CONTRACT.

3. UPON COMPLETION OF CONSTRUCTION, CONTRACTOR TO RESTORE SITE TO

ORIGINAL OR BETTER CONDITIONS AND PROVIDE SODDING AND/OR SEEDING AT

ALL AREAS DISTURBED AS PART OF THE ACTIVITIES INCLUDED IN THE PROJECT

DESCRIPTION, AS APPLICABLE.

4. CONTRACTOR TO PERFORM CLOSE-OUT ACTIVITIES INCLUDING BUT NOT LIMITED

TO REMOVAL OF EROSION AND SEDIMENT CONTROL, TESTING AND

COMMISSIONING, PRE-FINAL INSPECTION, CORRECTIVE WORK IF APPLICABLE

BASED ON GOVERNMENT INSPECTION, AS-BUILT SUBMITTAL, PREPARATION OF

PUNCH LIST, SUBMISSION OF INSTALLED EQUIPMENT AND DEMOBILIZATION TO THE

SATISFACTION OF THE GOVERNMENT.

1 5/2022 AMENDMENT 0002 SSE

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REV

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DATE

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DESCRIPTION

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BY

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A/E PRINCIPAL

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SEAL:

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APPROVED: