PEPCO_Approved_One_Line.pdf

PDF 2 MB Posted May 29, 2026

Attached to: Anacostia II WWPS Electrical Updates
Solicitation number: 107592
Issued by: Prince George's County, Maryland

About this file

Written by GovTribe AI · Jun 25, 2026

Summary

This document comprises engineering drawings and PEPCO approval correspondence for the Anacostia II Wastewater Pumping Station (WWPS) Electrical Upgrades project, a Washington Suburban Sanitary Commission (WSSC) initiative in Capitol Heights, Maryland. The primary deliverables include one-line electrical diagrams (E-101 and E-102) detailing the installation of new 13.8kV metal-clad switchgear with microprocessor-based SEL relays, outdoor pre-engineered electrical (PEE) weatherproof enclosures, dual bus configurations (1200A, 750 MVA capacity each), automatic source transfer controller systems with uninterruptible power supply (UPS) backup, PEPCO revenue metering infrastructure, and associated protection and control systems. The design incorporates connections to PEPCO feeders #15099R and #14102 from Blandensburg and Tuxedo substations respectively, with provisions for future feeder expansion. The sealed bid submission deadline is 2:00 p.m. on Wednesday, July 22, 2026, via the WSSC eProcurement Portal at https://procurement.opengov.com/portal/wsscwater. The project scope encompasses transformer replacement, dual switchgear line upgrades, SCADA system integration, backup battery systems, underground feeders and cables, new electrical structures and foundations, HVAC provisions, stormwater control measures, and temporary power provisions.

PEPCO Substation Engineering approved both one-line diagrams on April 3, 2026, contingent upon noted modifications, including specifications that three current-limiting fuses (rather than two) be furnished by PEPCO and installed by the contractor in the metering cubicle. The approval letter, dated April 22, 2026, from Roslyn Sturdivant (PEPCO Substation Engineering) to Brian Worthington (WSSC Facility Construction Manager), establishes that manufacturer drawings must be submitted for PEPCO review and approval prior to production, and that a Coordination Study and Check List (Appendix B) must be submitted for PEPCO protection review. The drawings reference PEPCO's General Specification for Customer-Owned Metal-Clad Switchgear for Customer Substations (S-MS-019, Revision 0.2) and incorporate coordination with PEPCO for installation and connections of current transformers, voltage transformers, metering cabinets, fuses, and required cables. All electrical symbols, abbreviations, general notes, construction sequence details, elevation specifications, and cable/conduit schedules are cross-referenced to additional engineering drawings (G-005 through G-021 and E-301 through E-613).

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Exhibit_A_-_Company_Experience_Statement.docx	DOCX document	May 29, 2026
Exhibit_B_-_References_-_CP6901A20.docx	DOCX document	May 29, 2026
Exhibit_C_-_Key_Personnel_Experience_Statement.docx	DOCX document	May 29, 2026
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52 52

N.C.

1200A

52 52

7A4A

14.4kV

120V

SPARE

FROM BLANDENSBURG SUBSTATION

(PEPCO FEEDER #15099R, 3PH, 3W SERVICE)

52-PT12

13.8kV, 1200A, 750 MVA SERVICE ENTRANCE SWITCHGEAR

(3)

N.O.

1200A 52-P7

13.8kV OUTDOOR PEE ENCLOSURE

EMH-P1

PEPCO

EMH-P2

PEPCO

EMH-P3

PEPCO

EMH-P4

PEPCO

EMH-P5

PEPCO

EMH-P6

PEPCO

FROM TUXEDO SUBSTATION

(PEPCO FEEDER 14102, 3PH, 4W SERVICE)

EMH-P7

PEPCO

EMH-P8

PEPCO

EMH-P9

PEPCO

EMH-6

14.4kV 120V

(3)

PEPCO

METERING

CABINET

45kVA

CPT-1

150A

(3)

1A 120V

LINE VT-1

14.4kV

(3) (3)

(3) 10B

120V

LINE VT-2

14.4kV

(3)(3)

51N51

27 59

(3)

600/5 MR

86P1 86P2

TRIP AND LOCKOUT

FOR ALL FUNCTIONS

EXCEPT 27, 59

TRIP AND LOCKOUT

FOR ALL FUNCTIONS

EXCEPT 27, 59

TRIP

FUNCTIONS

27, 59

TRIP

FUNCTIONS

27, 59

(3)

TS TS TSTS

5150 51N

86P5

(3) 1200/5

(3) (3)

(3) 1200/5

1200/51200/5

1200/5 1200/5

(3) (3)

(3)

PEPCO

CUBICLE

14.4kV

5150 51N

86P6

51 51N

86P7

PEPCO

METERING

CABINET

(3)600/5 MR

(3)600/5

CHH-1

600/5

(TYP.)

BUS 1 - 1200A, 750MVA,

3Ø, 3W, 13.8kV

208/120V

MMMM

MM MM

6 6

PB1

1A 6B

BUS 2 - 1200A, 750MVA,

3Ø, 3W, 13.8kV

PB2

PANEL

AC-CPT-P12

C E-103

TS TS

D E-103

PARTITION

PULLBOX PB-1

ARMS ARMS

45kVA

CPT-2

150A (3)K2

ARMS

(3) 1200/56

SPARE

ATS-CPT-P12

208V, 150A, 3P

C O

N U

N , S

E -1

N.O.

1200A

52-PT23

10A

1200/5

(3)

5 1200/5

(3)

SEL 487B

14.4kV/120V VT

(3)(3) 14.4kV/120V VT

(2) (2)

8 P-RTAC

PEPCO

CUBICLE

SEL 751 SEL 751

SEL 851 SEL 851 SEL 851

SEL 487B

(L-G)

6D5D

(L-G)

2A 3A

TRANSITION

83 8383

UPS

K5 9

9 9

50N50

51N51

27 59

50N50

TS TS

52-P1 1200A, N.O.

14.4kV 208/120V

52-P2 1200A N.C.

52-P5 1200A

N.O.

52-P6 1200A

N.C.

TO S-RTAC IN 4.16kV OUTDOOR PEE

ENCLOSURE, SEE DWGS E-103 AND EC-101

P002 P058

P051 P052

P001

TO HMI IN P-RBCC

P004

TO HMI IN P-RBCC

10 P005

P008

(3)600/5

ARMS

(3) 600/5 MR

CT-P1

BUS

VT-1

BUS

VT-2

CT-P2

27X 59X 27X59X

11 11

P117

86/P6 86/T5

L N1 N2

C010

C009

11A

(2)

(3)

SPLICE EX 13.8kV PEPCO FEEDERS WITH NEW FEEDERS TO ENERGIZE NEW SWGR FROM 13.8 kV

FEEDERS #15099R AND #14102 IN MANHOLES

EMH-P5 AND EMH-P6 RESPECTIVELY.

PROVIDE OUTDOOR PRE-ENGINEERED

ELECTRICAL (PEE) WEATHERPROOF ENCLOSURE

WITH SINGLE AISLE WALK-IN TYPE 13.8kV

METAL-CLAD SWITCHGEAR IN TWO HIGH

ARRANGEMENT AND MICROPROCESSOR BASED

SEL RELAYS.

PROVIDE 15kV STATION CLASS POLYMER

LIGHTNING ARRESTERS.

PROVIDE DETECT GLOW TUBE TYPE "RS", 1 PER

PHASE.

DRAWING NOTES:

CONTRACT:

DATE REVISIONS

- 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

:\U se rs \A lk a\

Sh ah a nd a ss oc ia te s\

S Pr oj ec ts

D oc um en ts \W

_A N

#6 -J

\D R

G S\

E-

dw g

DRAWN:

CHECKED:

DESIGN:

OF 148

WASHINGTON SUBURBAN SANITARY COMMISSION

THESE DOCUMENTS CONTAIN PRIVILEGED

AND CONFIDENTIAL INFORMATION WHICH

SHALL NOT BE REDISTRIBUTED WITHOUT

PRIOR WSSC APPROVAL

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.

LICENSE NO.: 36677

EXPIRATION DATE: 01-02-2028

April 3, 2026 - PLOT DATE

CP6901A20

BID READY DESIGN SUBMISSION

WSSC

DELIVERING THE ESSENTIAL

ANACOSTIA II WWPS

ELECTRICAL UPGRADES

416 NORTH FREDERICK AVENUE, GAITHERSBURG, MARYLAND 20877 (301) 926-2797

SHAH & ASSOCIATES

POWERING INNOVATIVE SOLUTIONS

02/09/2026

HFM 12/31/2025

DMG 12/31/2025

VGS 12/31/2025

MAIN SUBSTATION

PRIMARY 13.8kV SWITCHGEAR

ONE-LINE DIAGRAM I

E-101

SCALE: NOT TO SCALE

FOR ELECTRICAL SYMBOLS AND

ABBREVIATIONS, SEE DWGS G-005 AND G-006.

FOR ELECTRICAL GENERAL NOTES, SEE DWG

E-001.

FOR SEQUENCE OF CONSTRUCTION, SEE

DWGS G-008 THRU G-021.

FOR 13.8kV SWITCHGEAR ELEVATIONS, SEE

DWGS E-301 AND E-302.

FOR CABLE AND CONDUIT SCHEDULE, SEE

DWGS E-607 THRU E-613.

NOTES:

MAIN SUBSTATION PRIMARY 13.8kV SWITCHGEAR ONE-LINE DIAGRAM I

ELECTRICALLY OPERATED INTERLOCK SHALL PREVENT

PARALLELING OF UTILITY FEEDERS.

EACH CT SHALL BE WIRED INDIVIDUALLY TO 87 RELAY.

PARALLEL CONNECTIONS ARE NOT PERMITTED.

PROVIDE AUTOMATIC SOURCE TRANSFER CONTROLLER

SYSTEM WITH UPS CONTROL POWER BACKUP TO OPERATE

THE PRIMARY 13.8kV SWITCHGEAR MAIN AND TIE BREAKERS.

PROVIDE ATS AND ASSOCIATED AC PANEL IN THE PRIMARY

13.8kV SWITCHGEAR PEE ENCLOSURE AS SHOWN.

PROVIDE KIRK KEY INTERLOCK AS SHOWN. SEE DWG E-105

FOR DETAILS.

DRAWING NOTES (CONTINUED):

PEPCO REVENUE METERING. PEPCO IS RESPONSIBLE FOR

SUPPLYING VTS, CTS AND METERING CABINET. CONTRACTOR IS

RESPONSIBLE FOR COORDINATING WITH PEPCO FOR

INSTALLATION AND CONNECTIONS OF THE CTS AND VTS AND

METERING CABINET INCLUDING FUSES AND CABLES REQUIRED

FOR CONNECTIONS TO THE PEPCO METERING CABINET.

CONFIGURATION OF VTS AS PER PEPCO STANDARDS:

ON 3-PHASE, 3-WIRE, 60HZ SYSTEM, PEPCO WILL FURNISH TWO

GE-TYPE JMV VOLTAGE TRANSFORMERS OR EQUIVALENT RATED

14,400/120V, 60HZ WITHOUT FUSES. ON 3-PHASE, 4-WIRE, 60HZ

SYSTEM, PEPCO WILL FURNISH THREE GE-TYPE JMV VOLTAGE

TRANSFORMERS OR EQUIVALENT RATED 14,400/120VOLTS, 60HZ

WITHOUT FUSES.

DRAWING NOTES (CONTINUED):

ARMS FUNCTIONALITY IS DESIGNED BASED ON NORMAL SYSTEM

CONFIGURATION.

ARMS IN MAIN BREAKERS ACTIVATED BY DOWNSTREAM.

PROVIDE 10KV STATION CLASS POLYMER LIGHTING ARRESTERS.

DRAWING NOTES (CONTINUED):

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EMH-5 CHH-2

C O

N U

N , S

E -1

N.C.

1200A

16B

14A

16A

14.4kV 120V

SPARE

52-P3

52-PT34

13.8kV, 1200A, 750 MVA SERVICE ENTRANCE SWITCHGEAR

(3)

BUS 4 - 750 MVA,

3Ø, 3W, 13.8kV

BUS 3 - 750 MVA,

3Ø, 3W, 13.8kV

13.8kV OUTDOOR PEE ENCLOSURE

FROM BLADENSBURG SUBSTATION (PEPCO

FEEDER #15098R, 3PH, 3W SERVICE)

FUTURE PEPCO

FEEDER, 3PH, 3W SERVICE

U U

M V

C U

G R

O U

N D

N G

G R

O U

N D

N G

(L O

21A20A

20B

19A

15A

SPARE

225A (3)

19A 120V

LINE VT-4

14.4kV

(3) (3)

(3)14B 120V

LINE

VT-3

14.4kV

(3) (3)

(3)

600/5 MR

86P486P3

TRIP AND

LOCKOUT FOR

ALL FUNCTIONS

EXCEPT 27, 59

TRIP AND

LOCKOUT FOR

ALL FUNCTIONS

EXCEPT 27, 59

TRIP

FUNCTIONS

27, 59

TRIP

FUNCTIONS

27, 59

TSTS

TS TS

51N 51

51 5051N

86P9

(3)1200/5

(3) 1200/5

1200/51200/5

86P10

PEPCO

METERING

CABINET

600/5

EMH-P1

PEPCO

EMH-P2

PEPCO

EMH-P3

PEPCO

EMH-P4

PEPCO

EMH-P5

PEPCO

(TYP.)

45kVA CPT-4 14.4kV

208/120V

MM MM1200A

N.O.

51 5051N

600/5

PB3

15B

PB4

B E-103

A E-103

PARTITION

PULLBOX PB-2

ARMSARMS

(3)K4

K4225A (3)

45kVA CPT-3 14.4kV

208/120V

(3)K3

ATS-CPT-P34

208V, 150A, 3P6

PANEL

AC-CPT-P346

SEL 751

SEL 851 SEL 851

14.4kV/120V VT

(3)(2)

12A

PEPCO

CUBICLE

14.4kV/120V VT

(3) (2)

18A

PEPCO

CUBICLE

SEL 487B SEL 487B

(3)(3)

(3)

19B

15D

13B

17A

TRANSITION

11B

14.4kV 120V

(3)

1200/5

51 51N50

86P8

600/5

10B

ARMS

SEL 851

(3)

83 83

8 8

50N 50

51N 51

50N 50

TS TS

52-P4 1200A, N.C.

52-P8 1200A N.O.

52-P9 1200A

N.C.

52-P10 1200A

N.O.

TS TS

TO HMI IN P-RBCCTO HMI IN P-RBCC

P053 P054

P003

P057

P006

50N

50N 50N

P009

P007

(3) 600/5

P118

CT-P3

BUS

VT-3 BUS

VT-4

CT-P4 L-G

PEPCO

METERING

CABINET

(FUTURE FDR)

27X 59X 27X 59X

ARMS

1200/5

(3) 5

1200/5 (3)

86/P9 86/T8

L N2N1

(2)(2)

SPLICE EX 13.8kV PEPCO FEEDERS WITH NEW

FEEDERS TO ENERGIZE NEW SWGR FROM

13.8kV FEEDERS #15098R IN MANHOLE EMH-P5.

PROVIDE 15kV STATION CLASS POLYMER

LIGHTNING ARRESTERS.

PROVIDE DETECT GLOW TUBE TYPE "RS", 1 PER

PHASE.

ELECTRICALLY OPERATED INTERLOCK SHALL

PREVENT PARALLELING OF UTILITY FEEDERS.

EACH CT SHALL BE WIRED INDIVIDUALLY TO 87

RELAY. PARALLEL CONNECTIONS ARE NOT

PERMITTED.

PROVIDE ATS AND ASSOCIATED AC PANEL IN

THE PRIMARY 13.8kV PEE ENCLOSURE AS

SHOWN.

MOUNTING PROVISIONS FOR UTILITY CTs AND

FIXED MOUNTED VT.

DRAWING NOTES:

HFM 12/31/2025

DMG 12/31/2025

VGS 12/31/2025

MAIN SUBSTATION

PRIMARY 13.8kV SWITCHGEAR

ONE-LINE DIAGRAM II

E-102

1. FOR ELECTRICAL SYMBOLS AND ABBREVIATIONS,

SEE DWGS G-005 AND G-006.

2. FOR ELECTRICAL GENERAL NOTES, SEE DWG

E-001.

3. FOR SEQUENCE OF CONSTRUCTION, SEE DWGS

G-008 THRU G-021.

4. FOR 13.8kV SWITCHGEAR ELEVATION, SEE DWGS

E-301 AND E-302.

5. FOR CABLE AND CONDUIT SCHEDULE, SEE DWGS

E-607 THRU E-613.

NOTES:

CONTRACT:

DATE REVISIONS

- 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

:\U se rs \A lk a\

Sh ah a nd a ss oc ia te s\

S Pr oj ec ts

D oc um en ts \W

_A N

#6 -J

\D R

G S\

E-

dw g

DRAWN:

CHECKED:

DESIGN:

OF 148

WASHINGTON SUBURBAN SANITARY COMMISSION

THESE DOCUMENTS CONTAIN PRIVILEGED

AND CONFIDENTIAL INFORMATION WHICH

SHALL NOT BE REDISTRIBUTED WITHOUT

PRIOR WSSC APPROVAL

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.

LICENSE NO.: 36677

EXPIRATION DATE: 01-02-2028

April 3, 2026 - PLOT DATE

CP6901A20

BID READY DESIGN SUBMISSION

WSSC

DELIVERING THE ESSENTIAL

ANACOSTIA II WWPS

ELECTRICAL UPGRADES

416 NORTH FREDERICK AVENUE, GAITHERSBURG, MARYLAND 20877 (301) 926-2797

SHAH & ASSOCIATES

POWERING INNOVATIVE SOLUTIONS

02/09/2026

SCALE: NOT TO SCALE

MAIN SUBSTATION PRIMARY 13.8kV SWITCHGEAR ONE-LINE DIAGRAM II

PROVIDE KIRK KEY INTERLOCK AS SHOWN. SEE DWG E-104 FOR

DETAILS.

PROVIDE OUTDOOR PRE-ENGINEERED ELECTRICAL PEE

WEATHERPROOF ENCLOSURE WITH SINGLE AISLE WALK-IN

TYPE 13.8kV METAL-CLAD SWITCHGEAR IN TWO HIGH

ARRANGEMENT AND MICROPROCESSOR BASED SEL RELAYS.

DRAWING NOTES (CONTINUED):

PEPCO REVENUE METERING. PEPCO IS RESPONSIBLE FOR SUPPLYING VTS, CTS AND

METERING CABINET. CONTRACTOR IS RESPONSIBLE FOR COORDINATING WITH PEPCO

FOR INSTALLATION AND CONNECTIONS OF THE CTS AND VTS AND METERING CABINET

INCLUDING FUSES AND CABLES REQUIRED FOR CONNECTIONS TO THE PEPCO

METERING CABINET. CONFIGURATION OF VTS AS PER PEPCO STANDARDS:

ON 3-PHASE, 3-WIRE, 60HZ SYSTEM, PEPCO WILL FURNISH TWO GE-TYPE JMV VOLTAGE

TRANSFORMERS OR EQUIVALENT RATED 14,400/120V, 60HZ WITHOUT FUSES. ON

3-PHASE, 4-WIRE, 60HZ SYSTEM, PEPCO WILL FURNISH THREE GE-TYPE JMV VOLTAGE

TRANSFORMERS OR EQUIVALENT RATED 14,400/120VOLTS, 60HZ WITHOUT FUSES.

DRAWING NOTES (CONTINUED):

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Apil 22, 2026

BRIAN WORTHINGTON

Facility Construction Manager

Facility Design and Construction Division

Subject: CVC-620 - WSSC Anacostia II Wastewater Pumping Station (WWPS)

2100 Kenilworth Avenue, Capitol Heights, MD 20743

Substation Engineering has reviewed the electrical drawings submitted for new switchgear installation. The drawings were submitted to us for our review and approval. Reference where appropriate is made to Pepco’s General Specification for Customer-Owned Metal-Clad Switchgear for Customer Substations", S-MS-019, Revision 0.2. Substation Engineering offers the following comments.

Drawing MAIN SUBSTATION PRIMARY 13.8kV SWITCHGEAR ONE-LINE DIAGRAM I

1. In the metering cubicle, three (not two) current limiting fuses shall be furnished by Pepco and installed by the

Customer.

Drawing MAIN SUBSTATION PRIMARY 13.8kV SWITCHGEAR ONE-LINE DIAGRAM II

2. No comments.

General Note to Reference:

These comments are based on all preliminary information available at this submittal. Further comments may be warranted when additional details are provided.

3. Manufacturer drawings shall be submitted for Pepco review and approval. It is recommended that the Customer waits until they have approved manufacturer drawings from Pepco before proceeding with production.

4. Coordination Study and Check List (Appendix B) shall be submitted for Pepco Protection review and approval.

The following drawings are stamped “Approved – Except as Noted”:

Drawing MAIN SUBSTATION PRIMARY 13.8kV SWITCHGEAR ONE-LINE DIAGRAM I Drawing MAIN SUBSTATION PRIMARY 13.8kV SWITCHGEAR ONE-LINE DIAGRAM II

If you need further assistance or have any questions. Please feel free to contact me. I am happy to assist.

Thank you, Roslyn Sturdivant

3400 Benning Rd NE | Washington, DC 20019

O: 202-428-1233 rsturdivant@pepco.com | www.pepco.com

Roslyn Sturdivant

ANACOSTIA II WWPS ELECTRICAL UPGRADES _ ONE-LINE DIAGRAMS 04.03.26.

CVC-620 - WSSC Anacostia II Wastewater Pumping Station One-Line Memo Approved

File details come from the government source that posted it. Updated Jun 25, 2026.