Plans.pdf

PDF 7 MB Posted Oct 9, 2026

Attached to: Penn Manor Large Valve Vault Replacement
Solicitation number: 120583
Issued by: Prince George's County, Maryland

About this file

Written by GovTribe AI · Oct 19, 2026

This file comprises detailed engineering plans and construction specifications prepared by Johnson, Mirmiran & Thompson for the Washington Suburban Sanitary Commission (WSSC) in Maryland for the Penn Manor Large Valve Vault Replacement project located on Penn Manor Lane in Bowie, Prince George's County. The project involves replacing a 24-inch large valve vault and approximately 161 feet of 24-inch water main, relocating approximately 51 feet of 24-inch water main, and relocating approximately 54 feet of water house connections. The contract number is BT7171B21, and sealed responses are due November 16, 2026, by 2:00 pm via WSSC's eProcurement Portal. Construction is limited to Monday through Friday from 9:00 am to 3:00 pm, with a requirement that no construction work begin until the school year concludes at Pointer Ridge Elementary School on June 8, 2026. The project involves three construction phases: Phase One includes test pitting existing 24-inch prestressed concrete cylinder pipe (PCCP) and replacing sections during a single 8-hour shutdown; Phase Two involves installing new 24-inch ductile iron pipe (DIP) with a precast vault without disrupting existing mains; and Phase Three includes removing the existing vault structure and connecting remaining pipe sections during a final 8-hour shutdown.

The construction specifications require ductile iron pipe with zinc coating (Class 54 minimum), V-BIO enhanced polyethylene encasement, and fusion-bonded epoxy-coated fittings, with all water mains installed at minimum 42 inches cover for same-trench replacement and 48 inches for offset/relocated mains. Contractors must perform compaction testing at a minimum rate of one test per 100 feet of fill and verify all connection points to existing PCCP mains via test pits. All new water lines must be disinfected per AWWA Standard C651 with bacteriological tests submitted to the Maryland Department of Environment for approval prior to placing the main into service. Sediment and erosion control measures must be approved by WSSC before work commences, with contractor responsibilities including maintaining 1-foot minimum clearance at utility and storm drain crossings, providing tree trunk protection within 15 feet of work areas, relocating water meter boxes to minimize tree impact, obtaining staging areas at no cost to WSSC, and restoring all disturbed areas to pre-construction condition. The WSSC will be responsible for final mill and overlay and pavement striping after project completion, while the contractor bears all costs for restoration, repairs to damaged house connections and water mains, and replacement of pavement markings. Key coordination contacts include the WSSC Environmental Group, Systems Control Manager Karen Wright, Construction Manager Jason Flory, and Pipeline Construction Division Inspector, with mandatory 48-hour advance notification to MISS Utility and 60-day advance notice for PCCP shutdown coordination.

View the file

Other files

File	Type	Posted
Penn_Manor_Large_Valve_Vault_Replacement.pdf	PDF	Oct 15, 2026
Solicitation_Information.pdf	PDF	Oct 13, 2026
As-Built_Package.pdf	PDF	Oct 9, 2026
Prevailing_Wage.pdf	PDF	Oct 9, 2026
Attachments.pdf	PDF	Oct 9, 2026
Standard_Specifications.pdf	PDF	Oct 9, 2026
Special_Provisions.pdf	PDF	Oct 9, 2026
Mid-Atlantic_Purchasing_Team_Intergovernmental_&_Cooperative_Purchasing_Clause.pdf	PDF	Oct 7, 2026

On GovTribe

Work with this file

Download the original file
Contacts named in this file
Similar government files
Ask GovTribe AI about this file

Try for free Login

Text version

The file's text, extracted by GovTribe without its formatting.

ENGINEER:THESE DOCUMENTS CONTAIN

PRIVILEGED AND CONFIDENTIAL

INFORMATION WHICH SHALL NOT

BE REDISTRIBUTED WITHOUT

PRIOR WSSC APPROVAL

NAME: JOHNSON, MIRMIRAN & THOMPSON

ADDRESS: 40 WIGHT AVENUE, COCKEYSVILLE, MD 21030

PHONE: (410) 329-3100

CONTACT : STEVEN PICKEL, PE

202NE14

PROFESSIONAL CERTIFICATION

I HEREBY CERTIFY THAT THESE DOCUMENTS

WERE PREPARED OR APPROVED BY ME,

AND THAT I AM A DULY LICENSED

PROFESSIONAL ENGINEER UNDER

THE LAWS OF THE STATE OF MARYLAND.

NAME: STEVEN PICKEL, P.E.

LICENSE NO.: 50329

EXP. DATE: 12/18/2026

- B

O N

C H

O N

O R

O T

O N

C H

O N

T H

T, A

C C

O R

HHG: 355

LHG: 281

PRESSURE ZONE= 317A

XX/XX/XX - PLOT DATE

WESTERN BRANCH MINI DRAINAGE BASIN NO. 130

WASHINGTON SUBURBAN SANITARY COMMISSION

WSSC

DELIVERING THE ESSENTIAL

WSSC Erosion and Sediment Control Approval Note This plan has been approved per requirements in the:

Standard Procedures of the WSSC Regulations for Utility Erosion and Sediment Control, Section V, Paragraph A.

Reviewed by:_________________________________________

Date:__________________ Plan No.______________________

WASHINGTON SUBURBAN SANITARY COMMISSION

14501 SWEITZER LANE, LAUREL MARYLAND

PENN MANOR LANE LARGE

VALVE VAULT REPLACEMENT

PRINCE GEORGE'S COUNTY, MD

CONTRACT NO. BT7171B21

LOCATION MAP

1'=800"

PRINCE GEORGE'S CO.

200'S OF

P.G.CO.D.P.W.&T.

SED. CONTROL

STATE HGWY. ADM.

STATE BD. HEALTH

M.N.C.P.&P.C.

WETLANDS / WATERWAYS

TREE

PAGE GRID

SCALE 1":2000'

Prince George's Co. 5533 D6

CONTRACT NO. BT7171B21

REQUIRED

NOT REQUIRED

DJC

SSP

M.D. D.O.E. - WMA

NOT REQUIRED

REQUIRED

QUEEN ANNE ELECTION DISTRICT NO. 7

PENN MANOR LANE LARGE VALVE VAULT REPLACEMENT

PENN MANOR LANE

BOWIE, PRINCE GEORGE'S COUNTY, MD 20716

MDE CONSTRUCTION REQUIRED

CITY OF BOWIE

NOT REQUIRED

T C

U R

T as o f:

\\j m t.c or p.

lo ca l\j m td fs

5_ W oo dy ar d_

R oa d_ La rg e_

D \C

\P en n M an or

\C O

.d w g

ADEQUATE SURVEY

DATE

DATE STARTED

DATE FINALED

Drawing No.

FINALED BY

DATE COMPLETED

TYPE MANHOLES

TYPE PIPE W.

S.C.1.

1. thru 6.

Sediment Control Notes & Details Plans/Profiles/Details

Description

CONTRACT MANAGER

INSPECTOR

CONTRACTOR

L & G

AS BUILT DATA

TOWN NOTIFICATION

PERMIT REQUIREMENTS

DATE REVISIONS

VICINITY MAP

ON PROP. R/W REQ'D

OFF PROP. R/W REQ'D

FOR LOCATION OF UTILITIES CALL 8-1-1 OR 1-800-257-7777

OR LOG ON TO www.call811.com or www.missutility.net 48

HOURS IN ADVANCE OF ANY WORK IN THIS VICINITY

OTHER UTILITIES

*TO BE ACQUIRED BY APPLICANT

DRAWING INDEX

DRAWN

CHECK

PIPELINE DESIGN DIVISION

DATE DIVISION MANAGER

SECTION MANAGER

WATER INFRASTRUCTURE SECTION

1. ALL WATER MAINS TO BE DUCTILE IRON PIPE WITH ZINC COATING CLASS 54 MIN.

2. ALL DUCTILE IRON PIPE TO BE V-BIO ENHANCED POLYETHYLENE ENCASEMENT IN ACCORDANCE WITH AWWA

C105, METHOD A.

3. ALL DUCTILE IRON FITTINGS TO BE FUSION BONDED EPOXY COATED.

4. LICENSED GEOTECHNICAL ENGINEER T0 PERFORM COMPACTION TESTING FOLLOWING ASTM D1556, ASTM D6938 OR ASTM D2937 AT A MINIMUM RATE OF 1 TEST FOR EVERY 100 FEET OF FILL ALONG MAIN TRENCH AND

AT EVERY LATERAL TRENCH, STRUCTURE AND VALVE BOX IN RESTORATION OF TYPE I AREAS.

5. CONTRACTOR SHALL TEST PIT EXISTING WATER MAIN CONNECTION LOCATIONS. THERE IS THE POSSIBILITY OF ENCOUNTERING POURED LEAD JOINTS. IF POURED JOINT PIPE IS FOUND, REPLACE WITH MECHANICAL JOINT PIPE AND FITTINGS. REMOVAL OF THE JOINT IS INCIDENTAL TO THE CONTRACT. SEE SPECIAL CONSTRUCTION

REQUIREMENTS FOR WORK PERFORMED IN VICINITY OF EXISTING PCCP MAINS ON SHEET 2.

6. CONTRACTOR SHALL TEST PIT ALL UTILITY AND STORM DRAIN CROSSINGS A MINIMUM OF 2 WEEKS IN ADVANCE OF WORK, AND MAKE ANY ADJUSTMENTS AS NECESSARY WITH PRIOR APPROVAL OF WSSC AND AT NO COST TO WSSC. ONE FOOT MINIMUM CLEARANCE SHALL BE PROVIDED AT ALL UTILITY AND STORM DRAIN CROSSINGS

UNLESS OTHERWISE NOTED ON THE PLANS.

7. CONTRACTOR SHALL VERIFY THE TYPE, SIZE, AND LOCATION OF EXISTING FITTINGS ON THE WATER MAIN TO BE

REPLACED.

8. FOR SAME TRENCH REPLACEMENT, ALL EXISTING VALVES, VALVE BOXES, COPPER, BRASS, FITTINGS AND PIPE MUST BE REMOVED FOR SALVAGE AND RETURNED TO WSSC TEMPLE HILL WAREHOUSE, AT NO COST TO WSSC.

9. REPLACEMENT OF SINGLE WHC'S ARE TO BE 1" DIAMETER MINIMUM.

10. REPLACE EXISTING WHC'S WITH COPPER, TYPE K, TO THE PROPERTY LINE INCLUDING THE OUTSIDE METER

SETTINGS AND CURB STOPS, SEE STD. DETAIL W/5.6.

11. REPLACE/RECONNECT EXISTING WHC'S TO THE REPLACEMENT WATER MAIN AS NOTED IN THE EXISTING WATER

HOUSE CONNECTION INFORMATION TABLES.

12. LOCATE REPLACEMENT OUTSIDE METER SETTINGS AT THE SAME LOCATION AS EXISTING UNLESS OTHERWISE

SHOWN ON THE PLANS. SEE THE EXISTING WATER HOUSE CONNECTION INFORMATION TABLES.

13. INSTALL ALL WATER MAINS AND TEMPORARY CAPS/PLUGS ON BOTH THE REPLACEMENT AND EXISTING MAINS

AND TEST AS SHOWN ON THESE DRAWINGS.

14. CONTRACTOR SHALL NOTIFY MISS UTILITY AT LEAST 48 HOURS IN ADVANCE OF ANY WORK IN THIS AREA, SO APPROPRIATE MARKING OF EXISTING UTILITIES CAN BE MADE. CALL 811 OR 1-800-257-7777 OR LOG ON TO

WWW.CALL811.COM OR HTTP://WWW.MISSUTILITY.NET

15. 1"=10' SCALE DRAWINGS ARE BASED ON TOPOGRAPHIC SURVEY DATA COLLECTED BY JOHNSON, MIRMIRAN & THOMPSON IN FEBRUARY 2022. HORIZONTAL DATUM = NAD 83 AND VERTICAL DATUM = NGVD 29.

16. CONTRACTOR SHALL NOT STOCKPILE MATERIALS OR EQUIPMENT WITHIN THE DRIP-LINE OF ANY TREES.

17. PROVIDE TREE TRUNK PROTECTION FOR ALL TREES WITHIN 15 FEET OF ANY WORK. SEE STANDARD DETAIL

SC/19.0, EXCEPT NOMINAL 2"X10" OR 2"X12" PINE BOARDS MAY BE USED.

18. CONTRACTOR SHALL LOCATE ALL WHC'S IN THE FIELD. THE CONTRACTOR, AT NO COST TO WSSC, SHALL

REPAIR ANY DAMAGE TO HOUSE CONNECTIONS AND WATER MAINS THEY MAY CAUSE.

19. RELOCATED AND/OR REPLACED WHC'S SHALL BE PLACED IN LOCATIONS THAT MINIMIZE IMPACT TO TREES.

CONTRACTOR SHALL LOCATE WATER METER BOXES AND CURB STOPS AND ADJUST TO EXISTING GRADE.

20. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING STAGING AREA(S) AND FOR MOBILIZATION TO AND

FROM SUCH AREA(S) AT NO ADDITIONAL COST TO THE WSSC.

21. WHERE PAVEMENT MARKINGS WILL BE AFFECTED BY THE UTILITY WORK, THE PAVEMENT MARKINGS MUST BE IDENTIFIED SPECIFICALLY ON THE PLAN AND REPLACED IN KIND. THE CONTRACTOR SHALL SURVEY THE EXISTING MARKINGS, AS NEEDED, IN ORDER TO ENSURE THE NEW MARKINGS ARE RE-INSTALLED IN THE PROPER LOCATION. THE CONTRACTOR IS FULLY RESPONSIBLE FOR THE CORRECT REPLACEMENT OF ALL

IMPACTED PAVEMENT MARKINGS.

22. MAINTAIN 1' VERTICAL AND 5' HORIZONTAL CLEARANCE FROM OUTSIDE OF PIPE TO OUTSIDE OF PIPE FOR ANY OTHER APPURTENANCES. MAINTAIN A MINIMUM OF 2' CLEARANCE FROM CURB AND GUTTER UNLESS

OTHERWISE NOTED.

23. ALL ABANDONED IN PLACE EXISTING MAINS 8” AND LARGER AND APPURTENANCES SHALL BE FILLED ENTIRELY

WITH FLOWABLE FILL.

24. TEMPORARY WATER SERVICE PIPING SHALL BE LOCATED OUTSIDE OF THE PAVEMENT.

25. ALL ROADWAYS IMPACTED BY CONSTRUCTION SHALL BE OPENED TO TRAFFIC AT THE END OF EACH WORKING

DAY.

26. SAME TRENCH REPLACMENT DOES NOT PRECLUDE THE CONTRACTOR FROM MEETING ALL MINIMUM CLEARANCES SHOWN HEREIN. THE CONTRACTOR IS TO ADHERE TO LOCATION REQUIREMENTS SHOWN HEREIN FOR ALL PROPOSED/REPLACEMENT MAIN INCLUDING GRAPHICS, DIMENSIONS, AND STAKEOUT TABLES.

27. WATER METERS ARE TO BE LOCATED AT THE RIGHT-OF-WAY/FRONT PROPERTY LINE IN THE GRASSED AREA

WHENEVER POSSIBLE.

28. CONTRACTOR SHALL PROVIDE A SAFE, CLEAR, AND DETECTABLE PATH FOR PEDESTRIANS AT ALL TIMES

DURING CONSTRUCTION.

29. FOR ASPHALT INTERSECTIONS, EXTEND MILL AND OVERLAY TO PC/PT OF FILLETS.

30. VALVE STEM EXTENSIONS SHALL BE INSTALLED PER WSSC STANDARD DETAIL W/2.2 ON ALL OPERATING NUTS

WITH MORE THAN 4' OF COVER.

31. TO DETERMINE THE INVERT ELEVATION OF THE REPLACEMENT WATER MAINS FOR HYDROSTATIC PRESSURE

TESTING, USE THE AS-BUILT DRAWINGS.

32. CONTRACTOR SHALL PROVIDE STAKEOUT FOR THE PROPOSED RELOCATIONS.

33. PROVIDE TEMPORARY WATER SERVICE DURING CONSTRUCTION FOR WATER SERVICES AFFECTED BY THE WATER MAIN REPLACEMENTS. TEMPORARY WATER SERVICE CONNECTIONS SHALL BE AS PER STANDARD DETAILS W/5.16 AND W/5.16A. ALL SHUTDOWNS SHALL BE LIMITED TO NO LONGER THAN 8 HOURS, AND ALL CUSTOMERS AFFECTED BY THE SHUTDOWNS SHALL BE NOTIFIED AT LEAST 7 DAYS PRIOR TO THE SHUTDOWN.

GENERAL NOTES

SCALE: 1"= 2,000'

1,000' 1,000'0' 2,000'

INDEX OF SHEETS

FIELD REVIEWED BY DATE

SHEET NO. DESCRIPTION

1 TITLE SHEET

2 GENERAL NOTES

3 PLAN VIEW

4 PROFILE VIEW

5 DETAILS

6 TRAFFIC CONTROL

SCALE: 1"= 800'

400' 400'0' 800'

PROJECT

AREA

PROJECT

AREA

GENERAL NOTES (CONTINUED)

EXISTING WATER MAINS TO BE REPLACED

STREET EXISTING WATER MAIN SIZE REPLACEMENT SIZE LENGTH SHEET

PENN MANOR LANE 24" 24" 161 3

TOTAL 161

RESTORATION SCHEDULE

(ALL SHEETS)

LOCATION GRADING TYPE RESTORATION TYPE

ALL AREAS I "A" OR PAVING

COVER 1

34. NO VALVES ARE TO BE OPERATED WITHOUT A WSSC INSPECTOR ON SITE.

35. INSTALL SAME TRENCH REPLACEMENT WATER MAINS WITH A MINIMUM OF 42" COVER, AND OFFSET/ RELOCATED WATER MAINS

WITH MINIMUM OF 48" COVER UNLESS OTHERWISE NOTED ON THE DRAWING.

36. WSSC SHALL BE RESPONSIBLE FOR FINAL 2” MILL AND OVERLAY AND FINAL PAVEMENT STRIPPING. THE FINAL MILL AND OVERLAY AND PAVEMENT STRIPING SHALL BE PERFORMED AFTER COMPLETION OF EACH PHASE. THE CONTRACTOR SHALL NOT STORE CONSTRUCTION MATERIALS AND OPERATE/STORE EQUIPMENT ON THE NEWLY RESURFACED ROADWAYS.

37. ANY YARD WITH ZOYSIA GRASS THAT IS DISTURBED MUST BE REPLACED WITH ZOYSIA GRASS. FOLLOW RECOMMENDED TIME

FOR PLANTING ZOYSIA GRASS.

38. CONTRACTOR MUST CONTACT THE FOLLOWING PERSONS/AGENCIES AT LEAST SEVEN (7) DAYS PRIOR TO START OF ANY WORK UNDER THIS CONTRACT. BEFORE CONSTRUCTION, SCHEDULE OF 24" SHUTDOWN AND CONSTRUCTION SCHEDULE

MUST BE APPROVED THROUGH SYSTEMS CONTROL GROUP:

A. WSSC ENVIRONMENTAL GROUP, AT 301-206-8075.

B. KAREN WRIGHT, SYSTEMS CONTROL MANAGER, WSSC SYSTEMS CONTROL DIVISION, AT 301-206-8416.

C. JASON FLORY, CONSTRUCTION MANAGER, PIPELINE CONSTRUCTION DIVISION OF WSSC, ANACOSTIA DEPOT, AT

301-256-6851.

39. WATER MAINS SHALL BE LAID AT LEAST 10 FEET HORIZONTALLY FROM ANY EXISTING OR PROPOSED GRAVITY SANITARY OR STORM SEWER, SEPTIC TANK, OR SUBSOIL TREATMENT SYSTEM. THE DISTANCE SHALL BE MEASURED EDGE TO EDGE. WATER MAINS CROSSING SEWERS SHALL BE LAID TO PROVIDE A MINIMUM VERTICAL DISTANCE OF 18 INCHES. THIS SHALL BE THE CASE WHERE THE WATER MAIN IS EITHER ABOVE OR BELOW THE SEWER WITH PREFERENCE TO THE WATER MAIN LOCATED

ABOVE THE SEWER

40. ALL AREAS DISTURBED FROM THE CONTRACTOR'S CONSTRUCTION ACTIVITIES SHALL BE RESTORED TO A CONDITION AT LEAST EQUAL TO THAT WHICH EXISTED PRIOR TO START OF CONSTRUCTION. ROADSIDE DRAINAGE DITCHES, CULVERTS, UNDERDRAINS AND WATER AND SEWER HOUSE SERVICES WHICH ARE DAMAGED OR DESTROYED BY CONSTRUCTION, SHALL BE RESTORED TO A CONDITION AT LEAST EQUAL TO THAT WHICH EXISTED PRIOR TO THE START OF CONSTRUCTION. THE

COST OF ANY RESTORATION SHALL BE BORNE BY THE CONTRACTOR.

GENERAL NOTES (CONTINUED)

SC-1 SEDIMENT CONTROL DETAILS FOR UTILITY CONSTRUCTION

S . PN IE CV K

E E

T L

N 9o 2. 350

Docusign Envelope ID: B7C40696-C70F-49BC-81DD-AF032F73758F

Nov 25, 2025 | 10:07 AM PST

Nov 25, 2025 | 2:54 PM EST

Dec 1, 2025 | 9:24 AM EST

BT7171B21Dec 2, 2025 | 10:03 AM EST

Dec 2, 2025 | 10:36 AM EST

Dec 2, 2025 | 3:50 PM EST

CONSTRUCTION SHALL TAKE PLACE MONDAY - FRIDAY 9:00 AM - 3:00 PM. NO CONSTRUCTION WORK TO BEGIN

UNTIL SCHOOL YEAR HAS CONCLUDED AT POINTER RIDGE ELEMENTARY SCHOOL.

06/08/2026 REVISED GENERAL NOTE

Docusign Envelope ID: C4AD4B2A-87D4-8930-8148-201594D0CBA4

200'S

CONTRACT NO. BT7171B21

202NE14

ENGINEER:THESE DOCUMENTS CONTAIN

PRIVILEGED AND CONFIDENTIAL

INFORMATION WHICH SHALL NOT

BE REDISTRIBUTED WITHOUT

PRIOR WSSC APPROVAL

NAME: JOHNSON, MIRMIRAN & THOMPSON

ADDRESS: 40 WIGHT AVENUE, COCKEYSVILLE, MD 21030

PHONE: (410) 329-3100

CONTACT : STEVEN PICKEL, PE

QUEEN ANNE ELECTION DISTRICT NO. 7

PENN MANOR LANE LARGE VALVE VAULT REPLACEMENT

BOWIE, PRINCE GEORGE'S COUNTY, MD 20716

- B

O N

C H

O N

O R

O T

O N

C H

O N

T H

T, A

C C

O R

HHG: 355

LHG: 281

PRESSURE ZONE= 317A

WESTERN BRANCH MINI DRAINAGE BASIN NO. 130

WASHINGTON SUBURBAN SANITARY COMMISSION

WSSC

DELIVERING THE ESSENTIAL

XX/XX/XX - PLOT DATE

PROFESSIONAL CERTIFICATION

I HEREBY CERTIFY THAT THESE DOCUMENTS

WERE PREPARED OR APPROVED BY ME,

AND THAT I AM A DULY LICENSED

PROFESSIONAL ENGINEER UNDER

THE LAWS OF THE STATE OF MARYLAND.

NAME: STEVEN PICKEL, P.E.

LICENSE NO.: 50329

EXP. DATE: 12/18/2026

PENN MANOR LANE

T C

U R

T as o f:

\\j m t.c or p.

lo ca l\j m td fs

5_ W oo dy ar d_

R oa d_ La rg e_

D \C

\P en n M an or

N O

dw g

OF 6

WSSC Erosion and Sediment Control Approval Note This plan has been approved per requirements in the:

Standard Procedures of the WSSC Regulations for Utility Erosion and Sediment Control, Section V, Paragraph A.

Reviewed by:_________________________________________

Date:__________________ Plan No.______________________

DATE REVISIONS

DATE PROJECT MANAGER

WATER INFRASTRUCTURE SECTION

SPECIAL CONSTRUCTION REQUIREMENTS FOR WORK PERFORMED IN THE VICINITY

OF EXISTING PCCP WATER MAINS

MDE NOTES

BLOCKING NOTES

1. IN ACCORDANCE WITH TEN STATE STANDARDS, A MINIMUM OF TEN (10) FOOT HORIZONTAL AND EIGHTEEN (18) INCH VERTICAL SEPARATION MUST BE MAINTAINED BETWEEN WATER MAINS AND SANITARY SEWER. WHEN IT IS IMPOSSIBLE TO OBTAIN THE MINIMAL HORIZONTAL 10 FOOT HORIZONTAL SEPARATION AND/OR 18 INCH VERTICAL SEPARATION BETWEEN WATER MAINS AND SANITARY SEWER, MDE MUST SPECIFICALLY APPROVE ANY VARIANCE SUPPORTED BY DATA FROM THE DESIGN

ENGINEER.

2. IN ACCORDANCE WITH CODE OF MARYLAND REGULATIONS (COMAR) 26.04.01.33, DIRECT AND INDIRECT ADDITIVES, SUPPLIERS OF WATER SHALL ONLY USE PRODUCTS (AND MATERIALS THAT COME IN CONTACT WITH WATER INTENDED FOR USE IN PUBLIC WATER SUPPLY) THAT MEET THE APPLICABLE AMERICAN NATIONAL STANDARDS INSTITUTE / NSF INTERNATIONAL (ANSI/NSF) STANDARDS FOR DIRECT OR INDIRECT DRINKING WATER ADDITIVES. THE PRODUCTS CAN ALSO BE CERTIFIED BY AN ORGANIZATION ACCREDITED BY THE ANSI FOR SUCH TESTING (I.E., INTERNATIONAL ASSOCIATION OF PLUMBING AND MECHANICAL OFFICIALS RESEARCH AND TESTING, ONTARIO CA, UNDERWRITERS LABORATORY, NORTHBROOK IL, AND WATER

QUALITY ASSOCIATION, LISLE IL).

3. IN COMPLIANCE WITH COMAR 09.20.01.03 AND THE SAFE DRINKING WATER ACT (SECTION 1417(A)(4)(8)), MATERIALS THAT COME IN CONTACT WITH WATER INTENDED FOR USE IN PUBLIC WATER SUPPLY SHALL COMPLY WITH THE REDUCTION OF LEAD IN

DRINKING WATER ACT, WHICH WENT INTO EFFECT IN MARYLAND IN JANUARY 2012.

4. ALL WATER LINES SHALL BE DISINFECTED ACCORDING TO AWWA STANDARD C651. BACTERIOLOGICAL TESTS SHALL BE SUBMITTED TO MDE WATER SUPPLY PROGRAM FOR APPROVAL PRIOR TO PLACING THE MAIN INTO SERVICE.

1. RESTRAIN ALL PIPE JOINTS AND FITTINGS, SEE SPECIFICATION 02510.

2. INSTALL PRE-POURED THRUST BLOCKS, SEE DETAILS ON THESE SHEET 5.

GENERAL NOTES 2

1. ALL SEDIMENT AND EROSION CONTROL MEASURES SHALL BE INSPECTED AND APPROVED BY WSSC BEFORE ANY WORK CAN

COMMENCE.

2. CONTACT WSSC ENVIRONMENTAL PROGRAM SECTION 48 HOURS PRIOR TO UTILITY CONSTRUCTION AT 301-206-8077. THE

UTILITY SEDIMENT CONTROL PERMIT WILL BE ISSUED AT THE PRECONSTRUCTION MEETING.

3. ANY GROUND OR SURFACE WATER THAT IS PUMPED DURING THIS PROJECT SHALL BE DISCHARGED THROUGH A DEWATERING DEVICE APPROVED BY WSSC PRIOR TO BEING DISCHARGED OFFSITE, SEE STANDARD DETAIL SC/15.0 AND SC/15.1.

4. STREETS SHALL BE KEPT IN BROOM SWEPT CONDITION AT ALL TIMES.

5. INSTALL CURB INLET PROTECTION AS NEEDED, SEE STANDARD DETAIL SC/16.0 AND SC/16.1.

6. PLACE SILT FENCE PER STANDARD DETAIL SC/1.0 ALONG LOW SIDE OF EXCAVATED AREA WHEN WORKING IN NON-PAVED AREAS OR AS SHOWN ON PLANS, OR AS DIRECTED BY WSSC ENVIRONMENTAL STAFF IN THE FIELD. CONTRACTOR SHALL

PROVIDE DAILY TEMPORARY STABILIZATION FOR ALL DISTURBED NON-PAVED AREAS.

7. ANY EXCAVATED OR STOCKPILED MATERIAL LEFT OVERNIGHT SHALL BE COVERED WITH AN IMPERMEABLE MATERIAL.

PROVIDE SEDIMENT CONTROL FOR OFFSITE STAGING/STOCKPILES AREAS.

8. SLURRY GENERATED BY PAVEMENT SAW CUTTING SHALL BE CONTAINED BY THE CONTRACTOR. PREVENT SLURRY FROM ENTERING THE STORM DRAIN SYSTEM AND RECEIVING WATERWAY USING APPROVED METHODS, DEVICES OR AS DIRECTED BY WSSC ENVIRONMENTAL STAFF. CONTRACTOR SHALL REMOVE AND DISPOSE OF CONTAINED SLURRY PROPERLY AT THE

END OF EACH WORK DAY.

9. FOR AREAS WITHIN THE LIMIT OF DISTURBANCE WHICH DO NOT DRAIN TO AN APPROVED EROSION AND SEDIMENT CONTROL MEASURE AND/OR WHERE THE INSTALLATION OF CONTROLS IS NOT FEASIBLE (ROADWAY, SIDEWALK, ETC.) CONTRACTOR SHALL ONLY DISTURB AREA WHICH CAN BE COMPLETED AND STABILIZED BY THE END OF EACH WORKING DAY. STABILIZATION

SHALL BE AS FOLLOWS:

A. FOR AREAS TO BE PAVED: STONE BASE SHALL BE APPLIED

B. FOR AREAS TO BE VEGETATIVELY STABILIZED:

i. PERMANENT SEED AND SOIL STABILIZATION MATTING FOR SOD, FOR ALL STEEP SLOPES, CHANNELS, OR SWALES.

ii. PERMANENT SEED AND MULCH FOR ALL OTHER AREAS. ANY AREAS WHICH CAN NOT BE STABILIZED BY THE END

OF EACH WORKING DAY MUST HAVE SILT FENCE SC/1.0 INSTALLED ON THE DOWN SLOPE SIDE.

SEDIMENT CONTROL NOTES

1. CONSTRUCTION VEHICLES GENERATING LIVE LOADS GREATER THAN AASHTO HS20 (APPROX. 40,000 LBS OR GREATER), AND ANY VIBRATORY ROLLER COMPACTION EQUIPMENT, SHALL NOT BE PERMITTED WITHIN 10 FEET CLEAR OF THE OUTER EDGE

OF EX. PCCP WATER MAIN UNLESS APPROVED BY WSSC.

2. THE CONTRACTOR SHALL SUBMIT CONSTRUCTION VEHICLE SPECIFICATIONS FOR ALL VEHICLES PROPOSED FOR USE CLOSER THAN 10 FEET CLEAR, OR IF PROPOSED TO CROSS EX. PCCP WATER MAINS, TO THE WSSC PROJECT MANAGER/CONTACT PERSON FOR APPROVAL PRIOR TO COMMENCING WORK. ANY VEHICLE NOT PREVIOUSLY IDENTIFIED DURING THE DESIGN

REVIEW OF THESE PLANS WILL REQUIRE AN ADDITIONAL LOADING ANALYSIS REVIEW.

3. IF NECESSARY, HARDWOOD TIMBER MATS OF APPROPRIATE SIZE AND THICKNESS (SUFFICIENT TO FIT THE LARGEST CONSTRUCTION VEHICLE PROPOSED AND 1-FOOT THICK) SHALL BE PLACED OVER THE EXISTING PCCP MAIN TO ALLOW WSSC APPROVED CONSTRUCTION VEHICLE TRAFFIC TO CROSS OVER THE PIPELINE AND SAFELY DISTRIBUTE LIVE LOADS.

4. STOCKPILING OF SOIL OR OTHER MATERIAL IS NOT PERMITTED WITHIN 10 FEET CLEAR OF THE EDGE OF THE ROW OF THE EX.

MAINS, TO PREVENT ROW ENCROACHMENT.

5. THE CONTRACTOR SHALL LOCATE AND STAKEOUT THE EX. PCCP WATER MAINS AND EDGE OF THE ROW AND MAINTAIN THE MARKERS DURING CONSTRUCTION. UNLESS OTHERWISE APPROVED BY WSSC PROJECT MANAGER/ CONTACT PERSON, CONSTRUCTION VEHICLES ARE NOT PERMITTED WITHIN 10 FEET CLEAR OF EX. PCCP WATER MAIN AT ANY TIME, WHEN LESS THAN 6 FEET OF COVER EXISTS OVER THE MAIN. THE CONTRACTOR IS RESPONSIBLE FOR IDENTIFYING AREAS WHERE LESS THAN 6 FEET OF COVER EXISTS OVER THE MAINS DURING CONSTRUCTION VIA VACUUM TEST PITTING.

6. ALL BACKFILL AND COMPACTION OVER THE EX. PCCP MAINS, AT ANY DEPTH OF COVER, SHALL BE PERFORMED MANUALLY AND/OR WITH VEHICLES POSITIONED A MINIMUM OF 10 FEET CLEAR OF THE OUTER EDGE OF THE MAIN.

7. ALL ROCKS, BROKEN PAVEMENT, CURBING AND OTHER DEBRIS HAVING ANY DIMENSION GREATER THAN 3 INCHES SHALL BE REMOVED FROM ABOVE AND AROUND THE MAIN(S) PRIOR TO PLACING AND COMPACTING FILL, SUB GRADE MATERIAL OR

PAVING OVER THE MAIN (INCLUDING PIPE BEDDING).

8. THE CONTRACTOR SHALL NOTIFY THE APPROPRIATE PIPELINE CONSTRUCTION DIVISION INSPECTOR ASSIGNED TO THE PROJECT AT LEAST 72 HOURS IN ADVANCE OF ANY GRADING OR PAVING IN THE VICINITY OF THE EX. PCCP MAINS. ALL GRADING AND PAVING OVER THE MAINS SHALL BE COORDINATED AND PERFORMED UNDER THE SUPERVISION OF A WSSC

INSPECTOR.

9. THE CONTRACTOR SHALL USE SPECIAL CARE WHILE PERFORMING WORK IN THE VICINITY OF THE EX. PCCP WATER MAINS AND SHALL STRICTLY ADHERE TO THESE SPECIAL CONSTRUCTION REQUIREMENTS. THE CONTRACTOR IS RESPONSIBLE FOR ANY DAMAGE AND/OR REPLACEMENT REQUIRED AS A RESULT OF HIS WORK OVER THE MAINS AT NO ADDITIONAL COST TO WSSC.

10. IF SHUTDOWN AND DE-WATERING OF THE EX. PCCP WATER MAIN IS REQUIRED, COORDINATION WITH SYSTEMS CONTROL DIVISION (SCD) IS MANDATORY. A MINIMUM OF 60 DAYS ADVANCE NOTICE TO SCD IS REQUIRED TO COORDINATE WATER MAIN SHUTDOWN, DE-PRESSURIZATION, AND DE-WATERING OF EX. PCCP WATER MAINS AND REMOVAL OF THE ACOUSTIC FIBER OPTIC (AFO) MONITORING CABLE. SCD SHALL PERFORM THE SHUTDOWN SCHEDULING AND THE UTILITY SERVICES

DEPARTMENT SHALL EXECUTE THE SHUTDOWN, DE-PRESSURIZATION AND DE-WATERING.

11. TEST PITS TO VERIFY THE HORIZONTAL AND VERTICAL ALIGNMENT OF THE PCCP MAINS SHALL BE VIA VACUUM TEST PITTING RATHER THAN OPEN-CUT TRENCHING ON LIVE PCCP MAINS. VACUUM TEST PITTING IS PERFORMED ONLY TO THE CROWN OF THE EXISTING PCCP WATER MAINS. BACKFILL THE VACUUM TEST PIT IMMEDIATELY AFTER THE PERTINENT INFORMATION IS GATHERED. ANY DAMAGE TO THE EX. WATER MAIN COATING RESULTING FROM THE CONTRACTOR'S OPERATIONS SHALL BE REPAIRED AT THE CONTRACTOR'S EXPENSE. DAMAGE AND REPAIRS SHALL BE INSPECTED BY WSSC ENGINEERS AND/OR THE PIPE MANUFACTURER'S TECHNICAL FIELD REPRESENTATIVE, AND BE REPAIRED ACCORDINGLY PRIOR TO BACKFILLING.

12. DURING BACKFILLING, COMPACTED CR-6 OR #57 STONE SHALL BE USED TO 12 INCHES ABOVE THE CROWN OF THE PCCP MAIN.

THE REMAINING EXCAVATION SHALL BE BACKFILLED AND COMPACTED WITH SUITABLE MATERIAL IN ACCORDANCE WITH

STANDARD SPECIFICATION 02315.

NOTES:

· COORDINATE WITH ALL ONGOING CONSTRUCTION IN THE PROJECT AREA (IF ANY) TO RESOLVE ANY ISSUES

THAT WOULD BE IN CONFLICT WITH OTHER PROJECTS AND TRAFFIC CONTROLS.

· PEDESTRIAN ACCESS SHALL BE SAFELY MAINTAINED AT ALL TIMES.

· VERIFY LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTING WATER MAINS.

· TEST PIT CONNECTION LOCATIONS OF EXISTING WATER MAINS AND EXISTING UTILITY CROSSINGS.

· SHUTDOWNS SHOULD BE LIMITED TO 8 HOURS UNLESS OTHERWISE DIRECTED BY WSSC.

SITE B

1. PERFORM TEST PITS (VIA OPEN EXCAVATION) ON EX. 24" PCCP W TO LOCATE EXISTING PCCP JOINTS AT CONNECTION

LOCATIONS PRIOR TO ORDERING MATERIALS OR LAYING PIPE.

2. DURING A SINGLE 8 HOUR SHUTDOWN, PERFORM THE FOLLOWING WORK:

a. CLOSE THE FOLLOWING VALVES:

· V073 - NEAR PINECROFT LN AND PENN MANOR LN (200 FT SHEET 202NE14)

· V099 - NEAR PLACID CT AND PENN MANOR LN (200 FT SHEET 202NE14)

· V097 - NEAR POINTER RIDGE DR AND PENN MANOR LN (200 FT SHEET 202NE14)

· V096 - NEAR HALL RD AND POINTER RIDGE DR (200 FT SHEET 202NE14)

· V074 - NEAR PARKINGTON LN AND PENN MANOR LN (200 FT SHEET 202NE14)

· V075 - NEAR PENNYPACKER LN AND PENN MANOR LN (200 FT SHEET 202NE14)

· V077 - NEAR PACKTON LN AND PENN MANOR LN (200 FT SHEET 202NE14)

· V076 - NEAR PORT ECHO LN AND PENN MANOR LN (200 FT SHEET 202NE14)

· V078 - NEAR PENNINGTON LN AND PORT ECHO LN (200 FT SHEET 202NE14)

· V050 - NEAR 1206 PORT ECHO LN (200 FT SHEET 202NE14)

· V049 - NEAR 1206 PORT ECHO LN (200 FT SHEET 202NE14)

b. REPLACE EX. 24” W ON PENN MANOR LANE FROM STA. 0+10 TO STA. 0+58 AND FROM STA. 1+29 TO STA. 1+61 INCLUDING THRUST RINGS, REMOVE A MINIMUM OF TWO SECTIONS OF EXISTING PCCP PIPE AND CONNECT TO EXISTING JOINTS PER STD. DET. B/3.1b.

c. DISINFECT NEW 24" WATER MAIN.

d. OPEN VALVES CLOSED UNDER STEP 2a.

e. CONSTRUCT THRUST BLOCKS ON THRUST RINGS AND ALLOW TO CURE COMPLETELY.

3. WITHOUT DISRUPTING EXISTING WATER MAINS OR REQUIRING SHUTDOWNS, INSTALL 24” W FROM STA. 0+73 TO 1+02, INCLUDING CAST-IN-PLACE VAULT AND ALL APPURTENANCES. INSTALL TEMPORARY END CAPS AT STA. 0+73 AND STA 1+02.

4. ONCE CONCRETE HAS CURED TO DESIGN STRENGTH, DISINFECT AND TEST NEWLY INSTALLED PIPE.

5. DURING A SINGLE 8 HOUR SHUTDOWN, PERFORM THE FOLLOWING WORK:

a. CLOSE THE FOLLOWING VALVES:

· V073 - NEAR PINECROFT LN AND PENN MANREGEOR LN (200 FT SHEET 202NE14)