BD7580A23_Brighton_Drawings.pdf
PDF 10 MB Posted
- Attached to
- Piezometer Automation at WSSC Water Dams
- Solicitation number
- 1239
- Issued by
- Prince George's County, Maryland
About this file
This document is a set of engineering drawings prepared by AECOM Technical Services Inc. for the Washington Suburban Sanitary Commission (WSSC) detailing the design specifications for an Automated Data Acquisition System (ADAS) of piezometers at Brighton Dam in Montgomery and Howard Counties, Maryland. The project involves installing automated piezometer sensors at six existing monitoring wells (B-1 through B-6) to continuously measure groundwater pressure levels. The work includes installing Keller Acculevel pressure sensors (0-50 PSI range with 4-20mA output) within existing piezometer risers, running Schedule 80 PVC conduit approximately 320 feet along the concrete catwalk to connect sensors to a central PLC/data logger enclosure in the powerhouse, installing Stahlin J-series wall-mounted enclosures at each buttress-mounted location, and splicing sensor cables with appropriate fittings and hardware. The design incorporates heat tracing for the B-6 piezometer location to prevent freezing, concrete-encased below-grade enclosures with free-draining gravel bases, and stainless steel mounting hardware. The conduit and wiring schedule specifies total cable lengths ranging from 117.3 feet for B-1 to 391.4 feet for B-6, with junction boxes and 90-degree PVC turns as indicated.
The drawings were prepared by licensed professional engineer Bob Pinciotti (License No. 21984, expiration 05/24/2026) and digitally signed on June 3, 2025. Construction is contingent upon contractor verification of all existing field conditions prior to work commencement, with specific responsibility to notify WSSC if discrepancies exist. WSSC will provide and install the PLC controller enclosure, instrumentation power, and barometer; the contractor must verify sensor accuracy under direction of WSSC's process engineer and pull cables through conduit leaving three feet of slack inside the PLC enclosure for WSSC connection. All conduit penetrations into the PLC enclosure must occur at the lowest point possible on the side or through the bottom, with no top penetrations allowed. As-built surveys documenting location, bottom elevation, top elevation, and calculated sensor elevation are required, with benchmark information provided in the wiring schedule table.
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ENGINEER:
MONTGOMERY CO.
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
DATE
DATE STARTED
DATE FINALED
Drawing No.
FINALED BY
DATE COMPLETED
TYPE MANHOLES
TYPE PIPE W.
1. thru Plans/Profiles/Details
Description
P.G.CO.D.P.W.&T.
SED. CONTROL
CONTRACT MANAGER
INSPECTOR
CONTRACTOR
L & G
AS BUILT DATA
TOWN NOTIFICATION
STATE HGWY. ADM.
STATE BD. HEALTH
PERMIT REQUIREMENTS
FEDERAL AID
M.N.C.P.&P.C.
WETLANDS / WATERWAYS
TREE
DATE REVISIONS
PAGECo. GRID
VICINITY MAP
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
S.
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL
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
MONTGOMERY/
HOWARD PAGE# GRID#
DRAWING INDEX
TYPE OF PIPE TYPE OF PIPE
TYPE OF MANHOLES
DRAWN
CHECK
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
SECTION MANAGER
CIVIL SUPPORT SERVICES SECTION
DRAWN
CHECK
DATE DIVISION MANAGER
VE
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WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL
LOCATION MAP
WASHINGTON SUBURBAN SANITARY COMMISSION
14501 SWEITZER LANE, LAUREL MARYLAND 20707
AUTOMATED DATA ACQUISITION SYSTEM OF PIEZOMETERS
AT BRIGHTON DAM
BASIN: PATUXENT NORTH
MONTGOMERY / HOWARD COUNTIES, MARYLAND
SCALE: 1" = 2,000'
BRIGHTON DAM LOCATION
SCALE: 1" = 8 MILES
PROJECT LOCATION
SHEET NUMBER
SHEET INDEX
SHEET TITLE
COVER SHEET
INSTRUMENTATION PLAN PIEZOMETERS AND CONDUIT RUNS
PIEZOMETER INSTALLATION DETAILS B-1 THROUGH B-5
PIEZOMETER INSTALLATION DETAILS B-6
CONTROL ROOM CONDUIT
ADAS SYSTEM ARCHITECTURE
CONDUIT AND WIRING SCHEDULE
PIEZOMETER DETAILS WITH WYE FITTING AND BALL VALVE
REQUIRED - N
NOT APPLICABLE
REQUIRED - N
REQUIRED - N
REQUIRED - N
REQUIRED - N
REQUIRED - N
REQUIRED - N
REQUIRED - N
REQUIRED - N
BD7580A23
228NE01
ELECTION DISTRICT: 7
COVER SHEET
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
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NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:08:02 -04'00'
Pinciotti, Bob
Docusign Envelope ID: 130DF43D-970C-4358-BBE3-2FBE9BF6B3C4
Jun 11, 2025 | 9:26 AM EDT
Jun 11, 2025 | 10:48 AM EDT
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
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IN
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ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
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IN
C
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ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL
NOTES:
1. At each riser pipe location, conduit brings piezometer sensor cable from existing PVC riser to a new concrete buttress-mounted enclosure. See Piezometer Installation Details, Drawing 03.
2. PVC conduit runs from B-6 along the catwalk railing to the PLC in the utility room.
At each piezometer location after B-6, the PVC conduit runs to each buttress-mounted enclosure to pick up signal cable.
3. Existing B-1 through B-5 riser tops are at approximately elevation 321.3 feet.
4. PLC/Data Logger and enclosure to be provided and installed by the WSSC.
5. Buttress are 20-feet center to center.
Legend
New Piezometer Sensor
Conduit Run
INSTRUMENTATION PLAN PIEZOMETERS
AND CONDUIT RUNS
New PLC/Datalogger located near existing PLC
Existing PLC location
Powerhouse
Catwalk
B-1 B-2 B-3 B-4 B-5
B-6
Catwalk
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
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NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
Downstream
Upstream
SUGGESTED CONSTRUCTION SEQUENCE:
1. At Piezometer B-6 location:
a. Remove the plastic bucket and adjust the height of the existing well casing to accommodate the below ground enclosure.
b. Install the below grade enclosures at piezometer location routing conduit into enclosure.
c. Trench PVC conduit for the power supply cable from the existing location on Buttress 25 (upstream of the concrete catwalk) to the below ground enclosure.
d. Trench PVC conduit for the piezometer cable between the below ground enclosure and the Buttress 25 wall downstream of the concrete catwalk.
e. Extend the PVC conduit of the piezometer cable up the Buttress 25 wall to approximately 2.5 feet above the concrete catwalk.
f. Extend the PVC conduit of the piezometer cable to the location of piezometer B-5
2. At Piezometer B-1 through B-5 location:
a. Install Stahlin J series enclosures on the buttress at each piezometer location.
b. Install PVC conduit along downstream handrails of the concrete catwalk between enclosure locations.
3. Extend conduit from piezometer B-1 enclosure to the new PLC enclosure installed by WSSC in the powerhouse.
4. Install cable between the piezometer locations by pulling cable through the conduit.
5. Install Keller piezometer transducers by measuring cable and marking depth of sensor from top of riser. Set cap with cable grip at the mark and lower transducer into well riser.
6. Splice the sensor cable to the cable that runs back to the datalogger/PLC in the powerhouse.
7. Contractor shall verify the accuracy of all sensors at the direction of WSSC's process engineer.
320± foot conduit (actual length to be verified in the field)
20' between buttress center-lines (typ.)
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:08:48 -04'00'
Pinciotti, Bob
Docusign Envelope ID: 130DF43D-970C-4358-BBE3-2FBE9BF6B3C4
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
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IN
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IF
N O
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IN
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S H
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T, A D
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A C
C O
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IN
G
LY
ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
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D R
AW
IF
N O
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IN
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IN
G
LY
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL 8
3" to 1.5" diameter reducer fitting
Existing 3" diameter PVC riser
NOT TO SCALE
¼” cable grip
¼” cable grip
Sensor cable
Concrete buttress
½” liquid-tight conduit to protect cable.
No fitting required on conduit ends.
Stainless steel tie-wrap
Stainless steel clamps with concrete anchors
Stainless steel tie-wrap
Stainless steel clamps
Buttress Concrete Catwalk
Sensor cable
Stahlin J series enclosure, NEMA 1/3R/4X/6P/12, 10 x 8 x 4in (HxWxD), wall mount, fiberglass reinforced polyester, white, single-door,
(2) quick-release latches, padlock hasp
Latches on top, door drops down.
PVC conduit with sensor cable from Stahlin enclosure to main conduit on catwalk.
Concrete anchor
Concrete anchor
Concrete anchor
Note:
1. This design assumes the existing riser pipe is threaded at the top.
2. Existing risers B1, B-2, B-3, and B-5 are to be equipped with a 6-inch diameter PVC Schedule 80 conduit, 4-inches tall filled with concrete, similar construction to the WSSC constructed concrete ring at the base of piezometer B-4.
See note 2
PIEZOMETER INSTALLATION DETAILS
B-1 THROUGH B-5
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
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NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:09:13 -04'00'
Pinciotti, ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
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IF
N O
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IN
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H
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S H
EE
T, A D
JU
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A C
C O
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IN
G
LY
ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
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IF
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T, A D
JU
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AL
ES
A C
C O
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IN
G
LY
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL 8
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
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Piezometer Flush Mount Detail
B-6 (Not to Scale)
Set sensor bottom at 6" from PVC standpipe open bottom
Splice sensor cable with epoxy kit Below grade enclosure
Hubbell/Pencell PE1015 HDPE box and cover 15"L x 10"W x 12"D
Run sensor cable along Buttress 25 below the concrete walkway, then up to the height of handrail, and then toward piezometer B-5
Sch 80 PVC conduit. Diameter is based on number of sensor cables. See Conduit Table on Drawing 04.
90 degree PVC conduit sweep elbow with minimum radius 1 foot
Pressure sensor (Keller Acculevel with 4-20mA Output)
Existing 2.5" OD solid PVC standpipe
Insulated casing with Thermon Powerblanket or heat trace equivalent to prevent freezing
Sch 80 PVC conduit for #12 -3 THHN or equivalent.
To be connected to electric service on the inside of Buttress 25. Circuit to be connected to the existing service through a manual switch with an indicator light when the heat trace is on.
Seal end of conduits with duct seal or sealing foam to prevent water intrusion.
Note:
1. The riser pipe will need to be cut down below grade and pipe threads added to the top section.
2. Encase enclosure in fiber-reinforced bag-mixed concrete.
3. Granular Material Base shall be free draining crushed rock or gravel meeting the gradation of ASTM C-33 Coarse Aggregate No. 57, or as approved by WSSC.
PIEZOMETER INSTALLATION DETAILS
B-6
120AC power cable for heat trace
Sensor cable installed through PVC conduit
Conduit trench 3" wide 12" to 18" depth
Concrete encasement, See Note 2
"6" thick compacted Granular Material Base, See Note 3
NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
15"
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:09:30 -04'00'
Pinciotti, ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
AW
IF
N O
T O
N E
IN
C
H O
N T
H
IS
S H
EE
T, A D
JU
ST
S C
AL
ES
A C
C O
R D
IN
G
LY
ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
AW
IF
N O
T O
N E
IN
C
H O
N T
H
IS
S H
EE
T, A D
JU
ST
S C
AL
ES
A C
C O
R D
IN
G
LY
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL 8
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
Z:
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E:
1" diameter PVC conduit mounted through doorway to walkway railing.
PLC and PLC enclosure provided by WSSC
1" diameter PVC conduit mounted through doorway to walkway
PLC and PLC enclosure provided by WSSC
Wall mount bracket
LR 90° condulet
LL 90° condulet
LB 90° condulets
PLC
PLC
NOTES:
1. EXISTING CONDITIONS/ FACILITY SHOWN ON PLAN VIEW HEREON ARE BASED ON AVAILABLE DESIGN RECORDS AND MAY NOT REFLECT CURRENT EXISTING CONDITIONS. CONTRACTOR IS RESPONSIBLE FOR VERIFYING ALL EXISTING CONDITIONS PRIOR TO ANY CONSTRUCTION WORK. CONTRACTOR TO NOTIFY THE ENGINEER AND WSSC PROJECT MANAGER IF ANY DISCREPANCIES OR CONFLICTS EXIST.
2. DRAWING SHOWS THE GENERAL ALIGNMENT OF THE CONDUIT FROM THE WALKWAY TO THE PLC ENCLOSURE. THE EXACT ROUTE SHALL BE DETERMINED IN THE FIELD BY THE CONTRACTOR AND
MUST BE APPROVED BY WSSC.
CONTROL ROOM CONDUIT
NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
Wall mount brackets to be field located by Contractor. Spacing shall comply with the National Electrical Code.
6'
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:09:47 -04'00'
Pinciotti, ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
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IG
IN
AL
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IF
N O
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IN
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H
IS
S H
EE
T, A D
JU
ST
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AL
ES
A C
C O
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IN
G
LY
ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
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IF
N O
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IN
C
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H
IS
S H
EE
T, A D
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ES
A C
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IN
G
LY
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL 8
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
Z:
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PLC Controller Enclosure
Terminal Enclosure
Terminal Enclosure
Terminal Enclosure
Terminal Enclosure
Terminal Enclosure
B-1 B-2 B-3 B-4 B-5 B-6
Brighton Dam
ADAS SYSTEM ARCHITECTURE
NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
NOTES:
1. Keller Acculevel sensors have 4-20mA output and a 0-50PSI level sensing range.
(Item number: 0507.00203.051305.13)
2. The PLC Control Enclosure, PLC, instrumentation power, and barometer will be provided and installed by the WSSC.
3. Contractor shall verify the accuracy of all sensors at the direction of WSSC's process engineer.
4. Contractor shall connect the PVC conduit(s) to the PLC Control Enclosure and pull the sensor cables into the enclosure and leave three feet of sensor cable inside the enclosure for connection of the sensor cables to the PLC by the WSSC.
5. All sensor cables pulled into the PLC Control Enclosure shall be clearly and permanently marked with the appropriate piezometer number.
6. Conduit shall enter the PLC enclosure through a penetration at the lowest point possible on the side of the enclosure and if it is possible penetrate through the bottom of the enclosure. No top penetration of any conduit through enclosure shall be allowed. Locations of penetrations must be approved by WSSC.
2-wire current loop
(NTS)
2-wire current loop
(NTS)
Barometer
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:10:07 -04'00'
Pinciotti, ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
AW
IF
N O
T O
N E
IN
C
H O
N T
H
IS
S H
EE
T, A D
JU
ST
S C
AL
ES
A C
C O
R D
IN
G
LY
ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
AW
IF
N O
T O
N E
IN
C
H O
N T
H
IS
S H
EE
T, A D
JU
ST
S C
AL
ES
A C
C O
R D
IN
G
LY
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL 8
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
Z:
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E:
NAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
NOTES:
1. At each riser pipe location, conduit brings piezometer sensor cable from existing PVC riser to a new concrete buttress mounted enclosure. See Piezometer Installation Details on Drawing 03.
2. PVC conduit runs from B-6 along the catwalk railing to the PLC in the powerhouse. At each piezometer location after B-6, the PVC conduit runs to beach buttress mounted enclosure to pick up the signal cable.
3. All PVC shall be Schedule 80.
4. Expansion fittings shall be included on PVC conduit runs in accordance with NEMA PRP 4-2009 (R2016) guidance and Section 347-9 of the National Electric Code.
5. Piezometer sensor shall be set 6-inches above the bottom of the existing piezometer.
6. Contractor shall survey as-built location, bottom elevation, top elevation of completed installation, and calculate the elevation of the piezometer pressure sensor. Survey benchmarks are shown in the table below.
7. Drawing shows the general alignment and approximate length of the conduit from each piezometer to the PLC enclosure. The exact routes and cable lengths shall be determined in the field by the Contractor and must be approved by WSSC.
Brighton Dam Wiring Schedule
Well ID:
Top Elevation (ft) Bottom Elevation (ft)
Cable length in standpipe (ft)
Total cable length (ft)
Cable length: standpipe to new PLC enclosure (ft)
B-1 321.3 280.5
40.8
117.3
76.5
B-2 321.3 280.5
40.8
157.3
116.5
B-3 321.3 280.5
40.8
197.3
156.5
B-4 321.3 280.5
40.8
237.3
196.5
B-5 321.3 280.5
40.8
277.3
236.5
B-6 327.7 273.3
54.4
391.4
337.0
Sch80 PVC Section
B-6 to B-5
3/4" Diameter
160.0 40.0
40.0
280.0 120.0
Brighton Dam Conduit Schedule
1" Diameter 90 Deg Turns Junction Box Note
B-5 to B-4 B-4 to B-3 B-3 to B-2 B-2 to B-1 B-1 to PLC
Total conduit length (ft)
40.0
40.0 80.0
80ft for sensor and 80ft for heat trace, 2 each 90 Turns
CONDUIT AND WIRING SCHEDULE
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:10:28 -04'00'
Pinciotti, ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
AW
IF
N O
T O
N E
IN
C
H O
N T
H
IS
S H
EE
T, A D
JU
ST
S C
AL
ES
A C
C O
R D
IN
G
LY
ENGINEER:
DATE REVISIONS
ADEQUATE SURVEY
NO
200'S OF
CONTRACT
ON PROP. R/W REQ'D
OFF PROP. R/W REQ'D
OTHER UTILITIES
DRAWN
CHECK
THESE DOCUMENTS CONTAIN PRIVILEGED
AND CONFIDENTIAL INFORMATION WHICH
SHALL NOT BE REDISTRIBUTED WITHOUT
PRIOR WSSC APPROVAL VE
R
IF
Y
SC
AL
E
- B
AR
IS
O
N E
IN
C
H O
N O
R
IG
IN
AL
D R
AW
IF
N O
T O
N E
IN
C
H O
N T
H
IS
S H
EE
T, A D
JU
ST
S C
AL
ES
A C
C O
R D
IN
G
LY
ENGINEERING & ENVIRONMENTAL
SERVICES DIVISION
WASHINGTON SUBURBAN SANITARY COMMISSION
WSSC
DELIVERING THE ESSENTIAL 8
BD7580A23
228NE01
AUTOMATED DATA ACQUISITION SYSTEMS OF PIEZOMETERS AT
BRIGHTON DAM
BASIN: PATUXENT NORTH, MONGOMERY AND HOWARD COUNTIES, MARYLAND
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.: 21984 EXPIRATION DATE: 05/24/2026
Z:
\G
ER
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AN
TO
W N
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SG
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2\ D
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PR
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C
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\W
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VA
LV
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E:
NOT TO SCALE
1.5” Brass Wye
1.5” x 0.25" Male to Female brass Hex reducing bushing
IP 68 cable gland 0.25" thread
Sensor cable routed to junction box
Pipe fitted to existing riser pipe
1.5” Brass nipple 3" long
1.5” Bronze ball valve with stainless steel ball
PIEZOMETER DETAILS WITH WYE FITTING
AND BALL VALVENAME: AECOM TECHNICAL SERVICES INC.
ADDRESS: 12420 MILESTONE CENTER DRIVE, SUITE 150
GERMANTOWN, MD 20876
PHONE: 301-944-2545
CONTACT: BOB PINCIOTTI, P.E.
As-Built top elevation
06/03/25 - PLOT DATE
Digitally signed by Pinciotti, Bob DN: cn=Pinciotti, Bob, ou=USGRM2, email=bob.pinciotti@aecom.com Date: 2025.06.03 15:10:43 -04'00'
Pinciotti,
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