ARFQ DEP2500000018-Attachment 3A - Revised Final O&M Manual (3).pdf

PDF 16 MB Posted Aug 21, 2024

Attached to: OER - VIENNA PCE SUPERFUND SITE
Solicitation number: ARFQ-0313-DEP2500000018-1
Issued by: Upshur County, West Virginia

About this file

Written by GovTribe AI · Sep 6, 2024

This document is the Revised Final Operations & Maintenance (O&M) Manual for Request for Quotation (ARFQ) DEP2500000018 issued by the West Virginia Department of Environmental Protection (WVDEP). The O&M Manual provides detailed requirements and specifications for the operation and maintenance of the Canaan Valley Acid Mine Drainage Treatment Plant located in Tucker County, West Virginia. The manual covers all aspects of the treatment plant's operations, including influent and effluent water quality monitoring, sludge management, mechanical and electrical equipment maintenance, and emergency response protocols.

The contract term is one year with four optional one-year renewal periods. No specific quantities are provided, as this is an on-going operations and maintenance contract. The document does not contain any information about pricing, set-asides, incumbents, funding, or other salient commercial terms.

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EVISED FIN

AL O

PERATIO

S AN

D M

AIN

TEN

(O M ) M

UAL G

U N

ATER TREATM

T SYSTEM

(TU

1, TU

D TU

Vienna PCE Superfund Site Vienna, W est Virginia O ctober 2015

Response Action Contract for Remedial Planning and Oversight Activities in

EPA Region III

Revised Final Operations and Maintenance (O&M) Manual Groundwater Treatment Systems

(TU1, TU2 and TU3)

Vienna PCE Superfund Site Vienna, West Virginia

October 2015

Response	Action	Contract
for	Remedial	Planning	and	Oversight	Activities

in EPA Region III

U.S. EPA Contract No. EP‐S3‐07‐06

Revised	Final	Operations	and	Maintenance
(O&M)	Manual	Groundwater	Treatment	Systems

(TU1,	TU2	and	TU3)
Vienna	PCE	Superfund	Site
Vienna,	West	Virginia

Work	Assignment	No.:	016‐LRLR‐03AT
Document	Control	No.:	3330‐016‐OM‐REPT‐02940

October 2015

Prepared for:

U.S.	Environmental	Protection	Agency
Region	III

1650	Arch	Street
Philadelphia,	Pennsylvania	19103

Prepared by:

3201	Jermantown	Road,	Suite	400
Fairfax,	Virginia	22030

Table of Contents

Section 1 Introduction ....................................................................................................... 1‐1

1.1	Document	Organization	.........................................................................................................................................	1‐1
1.2	O&M	Staffing	Plan	.....................................................................................................................................................	1‐2
1.3	Project	Directory	.......................................................................................................................................................	1‐3

Section 2 Background Information and Overview .............................................................. 2‐1

2.1	Site	Description	.........................................................................................................................................................	2‐1
2.2	Remedial	Action	Objectives	..................................................................................................................................	2‐2
2.3	Treatment	Unit	Design	Summary	......................................................................................................................	2‐2
2.4	O&M	Requirements..................................................................................................................................................	2‐6

2.4.1	Operations	......................................................................................................................................................	2‐6
2.4.2	Sampling	and	Monitoring	........................................................................................................................	2‐8

2.4.2.1 Performance Monitoring of Operational Conditions ..................................................... 2‐9

Section 3 Control Systems Description ............................................................................... 3‐1

3.1	Control	Panels	............................................................................................................................................................	3‐1
3.2	Control	Logic	Overview	..........................................................................................................................................	3‐1
3.3	Control	System	Functionality	Overview	.........................................................................................................	3‐2
3.4	Human‐Machine	Interface	(HMI)	.......................................................................................................................	3‐3

3.4.1	MAIN	Screen	..................................................................................................................................................	3‐4
3.4.2	MOTORS	Screen	...........................................................................................................................................	3‐6
3.4.3	VALVES	Screen	.............................................................................................................................................	3‐9
3.4.4	ALARMS	Screen	..........................................................................................................................................	3‐10
3.4.5	TREND	Screens	..........................................................................................................................................	3‐11
3.4.6	Data	Logs	......................................................................................................................................................	3‐13
3.4.7	Alarm	Logs	...................................................................................................................................................	3‐14

3.5	Remote	Alarm	Notification	.................................................................................................................................	3‐14
3.6	Remote	Access	.........................................................................................................................................................	3‐15

Section 4 Initial Set‐Up Procedures .................................................................................... 4‐1

4.1	Control	Panels	............................................................................................................................................................	4‐1
4.2	Bag	Filters	(TU3	only)	.............................................................................................................................................	4‐1
4.3	Transfer	Pumps	.........................................................................................................................................................	4‐2
4.4	Compressors	...............................................................................................................................................................	4‐3
4.5	Extraction	Well	Pump	(TU3	only)	.....................................................................................................................	4‐3
4.6	SVE	Systems	................................................................................................................................................................	4‐4
4.7	Off‐Gas	Treatment	Systems	..................................................................................................................................	4‐5
4.8	Miscellaneous	Equipment	.....................................................................................................................................	4‐5

Section 5 Systems Operating Procedures ........................................................................... 5‐1

5.1	Preliminary	Checks	Prior	to	System	Start‐Up	..............................................................................................	5‐1
5.2	Full	Automatic	Start‐Up	and	Operation	..........................................................................................................	5‐1
5.3	Automatic	Startup	and	Operation	of	Select	Equipment	...........................................................................	5‐3
5.4	Manual	Speed	Control	for	Submersible	Well	Pump	(TU3	only)	...........................................................	5‐3
5.5	Routine	Operations	..................................................................................................................................................	5‐4

Table of Continents (Continued) ii

5.6	Operator	Shutdown	..................................................................................................................................................	5‐4
5.7	Automatic	Shutdown	on	Alarm	Condition	.....................................................................................................	5‐5
5.8	Emergency	Shutdown	.............................................................................................................................................	5‐5

Section 6 Maintenance Procedures ................................................................................... 6‐1

6.1	Preventative	Maintenance	and	Lubrication	Schedules	.............................................................................	6‐1
6.2	Replacement	of	Consumable	Items	...................................................................................................................	6‐1

6.2.1	Bag	Filters	.......................................................................................................................................................	6‐1
6.2.2	Off‐Gas	Treatment	Media	.........................................................................................................................	6‐2
6.2.3	Liquid	Phase	Treatment	Media	.............................................................................................................	6‐2

6.3	Extraction	Well	Maintenance	...............................................................................................................................	6‐3
6.4	Shut	down	for	Maintenance,	Repair,	or	Replacement	...............................................................................	6‐4

6.4.1	Bag	Filters	.......................................................................................................................................................	6‐4
6.4.2	Compressors	..................................................................................................................................................	6‐4
6.4.3	Submersible	Well	Pump	...........................................................................................................................	6‐4
6.4.4	SVE	System	.....................................................................................................................................................	6‐4
6.4.5	Off‐Gas	Treatment	System	.......................................................................................................................	6‐4
6.4.6	Liquid	Phase	Treatment	System	...........................................................................................................	6‐4

6.5 Spare Parts List .......................................................................................................................................................... 6‐5

Section 7 Inspection and Monitoring Procedures ............................................................... 7‐1

7.1	Extraction	Wells	and	Pumps	................................................................................................................................	7‐1
7.2	Conveyance	Piping	...................................................................................................................................................	7‐1
7.3	Treatment	Plants	.......................................................................................................................................................	7‐2

Section 8 Troubleshooting Guidelines ................................................................................ 7‐1

Section 9 Health and Safety Guidelines ............................................................................. 7‐1

Section 10 Recordkeeping and Reporting .......................................................................... 7‐1

10.1	Operations	Records	...............................................................................................................................................	7‐1
10.2	Maintenance	Records	...........................................................................................................................................	7‐1
10.3	Quarterly	Operations	Summary	Report	.......................................................................................................	7‐2

Section 11 References ....................................................................................................... 7‐1

Table of Contents (Continued) iii

List of Figures

Figure	3‐1	MAIN	Screen,	TU1
Figure	3‐2	MAIN	Screen,	TU2
Figure	3‐3	MAIN	Screen,	TU3
Figure	3‐4	MOTORS	Screen,	TU1
Figure	3‐5	MOTORS	Screen,	TU3
Figure	3‐6	VALVES	Screen,	TU1
Figure	3‐7	ALARMS	Screen,	TU3
Figure	3‐8	Real‐Time	TREND	Screen,	TU3
Figure	3‐9	Historical	TREND	Screen,	TU3

List of Tables

Table	1‐1	Project	O&M	Directory
Table	2‐1	Storm	Sewer	/	Air	Discharge	Criteria
Table	2‐2	TU1	Equipment	List
Table	2‐3	TU2	Equipment	List
Table	2‐4	TU3	Equipment	List
Table	3‐1	TU1	Control	System	Interlocks
Table	3‐2	TU2	Control	System	Interlocks
Table	3‐3	TU3	Control	System	Interlocks
Table	3‐4	TU1	Control	Tag	Database
Table	3‐5	TU2	Control	Tag	Database
Table	3‐6	TU3	Control	Tag	Database
Table	5‐1	Routine	Operating	Parameters
Table	6‐1	Routine	and	Preventative	Maintenance	Schedule
Table	6‐2	Spare	Parts	List
Table	7‐1	Routine	Inspection,	Monitoring,	and	Maintenance	Schedule
Table	8‐1	General	Troubleshooting	Guidelines

List of Drawings

Drawing	2‐1	Treatment	Unit	#1	Site	Plan
Drawing	2‐2	Treatment	Unit	#1	Mechanical	Layout
Drawing	2‐3	Air	Sparge	and	SVE	Manifold	Details
Drawing	2‐4	Treatment	Unit	#2	Site	Plan
Drawing	2‐5	Treatment	Unit	#2	Mechanical	Layout
Drawing	2‐6	Treatment	Unit	#3	Site	Plan
Drawing	2‐7	Treatment	Unit	#3	Mechanical	Layout
Drawing	2‐10	Treatment	Unit	#1	Process	and	Instrumentation	Diagram
Drawing	2‐11	Treatment	Unit	#2	Process	and	Instrumentation	Diagram
Drawing	2‐12	Treatment	Unit	#3	Process	and	Instrumentation	Diagram

Drawing 2‐14 Treatment Unit #3 Groundwater Extraction Wellhead Detail

Table of Continents (Continued) iv

Appendices

Appendix	A	Vapor	Phase	Carbon	Units	with	GAC
Appendix	B	Vapor/Liquid	Separator
Appendix	C	Liquid	Bag	Filter	Vessels
Appendix	D	Liquid	Phase	Carbon	Units	with	GAC
Appendix	E	Induction	Motors
Appendix	F	Submersible	Pump
Appendix	G	Custom	Liquid	Level	Switch
Appendix	H	Transfer	Pumps
Appendix	I	Rotary	Lobe	Blowers
Appendix	J	Electromagnetic	Flow	Meter
Appendix	K	Pressure	Transmitters
Appendix	L	In‐Line	Pneumatic	Flow	Meter
Appendix	M	Temperature	Transmitters
Appendix	N	Pole	Guided	and	Venturi	Flow	Meters
Appendix	O	Groundwater	Extraction	Pump,	Motor,	Transducer,	and	Controller
Appendix	P	Supervisory	Controls	and	Data	Acquisition
Appendix	Q	Air	Compressors
Appendix	R	Miscellaneous	Electrical	Equipment
Appendix	S	Example	Forms	and	Logs	for	O&M	Recordkeeping
Appendix	T	Treatment	Media	Modeling	Data

Table of Contents (Continued) v

Abbreviations and Acronyms

amsl	above	mean	sea	level
CV	controlled	variable
EPA	U.S.	Environmental	Protection	Agency
EW	extraction	well
GAC	granular	activated	carbon
gpm	gallons	per	minute
HDPE	High	Density	Polyethylene
HMI	Human‐Machine	Interface
HP	horse	power
I/O	inputs	&	outputs	(PLC	I/O)
KVA	kilovolt‐ampere
lbs	pounds
LGAC	liquid	granular	activated	carbon
LTRA	Long	Term	Remedial	Action
MCL	maximum	concentration	limits
O&M	operations	and	maintenance
OIT	Operator	Interface	Terminal
P&ID	Process	and	instrumentation	diagram
PCE	tetrachloroethene
PID	proportional‐integral‐derivative
PLC	programmable	logic	controller
ppmv	parts	per	million	by	volume
psig	pounds	per	square	inch	gage
PVC	Polyvinyl	Chloride
RA	Remedial	Action
RAC	Response	Action	Contract
RCRA	Resource	Conservation	and	Recovery	Act
SMP	Site	Management	Plan
scfm	cubic	feet	per	minute	at	standard	conditions
SDR	standard	dimension	ratio
SVE	soil	vapor	extraction
TCLP	toxicity	characteristic	leaching	procedure
TDH	total	discharge	head
TU	Treatment	Unit
µg/L	micrograms	per	liter
VAC	volts	AC
VDC	volts	DC
VFD	variable	frequency	drive
VGAC	vapor	granular	activated	carbon
wc	water	column

1‐1

Section 1 Introduction

CDM

Federal

Programs

Corporation

(CDM

Smith)

has

prepared

this

Revised

Final

Operations

and

Maintenance

(O&M)

Manual,

Groundwater

Treatment

Unit

(TU)

TU2,

and

TU3

the

Vienna

Tetrachloroethene

(PCE)

Superfund

Site

(the

Site)

Vienna,

West

Virginia.

This

manual

update

the

Final

O&M

Manual,

Groundwater

Treatment

Unit

(TU)

#1,

TU#2,

TU#3,

and

TU#4,

Revision

dated

June

2006

and

prepared

for

CDM

Smith

Arrowhead

Contracting,

Inc.

under

Subcontract

No.

3232‐042‐004‐SI.

CDM

Smith

has

prepared

this

Updated

O&M

Manual

under

the

U.S.

Environmental

Protection

Agency

(EPA)

Region

Response

Action

Contract

(RAC)

No.

EP‐S3‐

07‐06,

Work

Assignment

(WA)

No.

016‐LRAR‐03AT

response

recent

updates

the

Site

treatment

systems

and

the

relocation

the

TU4

air

sparge/soil

vapor

extraction

(AS/SVE)

system

the

Ravenswood

PCE

Superfund

Site

May

2009.

The

scope

groundwater

and

air

sampling

associated

with

system

performance

monitoring

presented

separately

bound

document

and

not

discussed

this

document.

1.1 Document Organization

The O&M manual includes the following sections and appendices:

Section

1.0

–

Introduction

–

addition

presenting

the

outline

for

this

O&M

Manual,

this

section

presents

list

relevant

supporting

documents,

description

O&M

responsibilities,

and

project

directory

the

primary

vendors,

suppliers,

and

manufacturers

the

process

equipment

and

instrumentation.

2‐1

Section 2 Background Information and Overview

This

section

presents

general

background

information

about

the

Site

and

project,

including

the

objectives,

summary

the

design

each

TU,

and

the

requirements

for

O&M.

2.1 Site Description

The

Vienna

PCE

Site

located

the

City

Vienna

the

Ohio

River

Valley

West

Virginia.

The

contaminated

area

urbanized

residential

and

commercial

area

surrounding

the

City

Vienna

Municipal

Building

(City

Hall)

and

the

Vienna

and

Busy

Bee

Cleaners.

The

City

Vienna

located

Wood

County,

West

Virginia.

The

county

located

the

Allegheny

Plateau

section

the

Appalachian

Plateaus

Geomorphic

Province.

The

topography

the

area

that

maturely

dissected

plateau,

characterized

narrow,

winding

ridges,

steep

sided

stream

valleys,

and

dendritic

drainage

pattern.

The

Site

situated

broad,

relatively

flat

floodplain

the

Ohio

River.

PCE,

dry

cleaning

solvent,

has

been

detected

the

City

municipal

drinking

water

wells.

Twelve

municipal

water

supply

wells,

located

throughout

the

City,

are

the

affected

area.

Within

the

area

being

evaluated,

two

facilities

have

been

identified

being

probable

sources

groundwater

contamination

and

are

considered

potential

responsible

parties

(PRPs).

These

facilities

are

Vienna

Cleaners

and

Busy

Bee

Cleaners.

PCE

contamination

was

first

detected

February

1992

Municipal

Wells

through

located

City

Hall.

The

highest

concentrations

PCE

were

detected

samples

collected

from

these

wells

1992;

170,

390,

and

micrograms

per

liter

(µg/L)

were

detected

Wells

through

respectively.

The

City

discontinued

use

these

wells

June

1992.

Groundwater

samples

collected

from

Municipal

Wells

and

West

Virginia

Department

Environmental

Protection

(WVDEP)

September

and

24,

1992

had

PCE

concentrations

ug/L

and

0.5

ug/L,

respectively.

Municipal

Wells

and

are

hydraulically

downgradient,

and

there

concern

about

future

contamination

result

being

downgradient

Municipal

Wells

and

Municipal

Wells

and

were

removed

from

service

1991,

due

PCE

contamination

and

benzene

contamination

which

originated

from

UST.

With

production

six

the

twelve

wells

discontinued,

the

City

faced

potential

water

shortage

emergency.

Consequently,

two

additional

municipal

wells

(13

and

14)

were

installed

1995,

hydraulically

upgradient

from

the

contaminated

areas,

serve

backup

water

supply

the

event

such

emergency.

The

two

wells

were

brought

online

March

10,

1997

meet

existing

demands.

May

1993

and

1994,

REAC

personnel

also

found

PCE

the

Site.

PCE

plume

was

detected

soil

gas

and

groundwater

extending

from

just

north

the

Vienna

Cleaners

the

south

far

the

intersection

Grand

Central

Avenue

and

27th

Street.

The

highest

PCE

concentrations

were

found,

both

soil

and

groundwater,

the

vicinity

the

Vienna

Cleaners

and

the

Busy

Bee

Cleaners.

The

highest

groundwater

concentrations

were

present

ERT‐3

and

ERT‐4

(4,763

µg/L

and

787

µg/L,

respectively);

these

wells

are

the

Vienna

and

Busy

Bee

Cleaners.

Section 2 Background Information and Overview

2‐2

result,

the

contamination

assumed

have

originated

from

these

facilities.

Remedial

Investigation

(RI)

conducted

2001

has

further

delineated

the

plumes.

Construction

the

groundwater

treatment

units

(TU1,

TU2,

TU3

and

TU4)

was

completed

August

2005

Arrowhead

Contracting

under

subcontract

CDM

Smith.

The

TU4

AS/SVE

system

was

relocated

the

Ravenswood

PCE

Superfund

Site

May

2009.

2.2 Remedial Action Objectives

The

remedial

objective

this

project,

described

the

2002

Record

Decision

(ROD),

reduce

the

groundwater

PCE

concentration

risk

based

drinking

water

level

10‐5

cumulative

excess

cancer

risk

and

Hazard

Index

1.0).

Successfully

achieving

the

cumulative

excess

cancer

risk

goal

will

require

reduction

the

concentrations

PCE

least

the

Maximum

Contaminant

Level

(MCL)

µg/L.

meet

the

remedial

objective,

air

sparging

with

soil

vapor

extraction

(SVE)

systems

were

installed

the

following

three

areas:

Vienna Cleaners Source Area (TU1)

Central Plume Area (TU3)

Busy Bee Source Area (TU4)

Additionally,

air

sparging

system

without

SVE

was

installed

the

Vienna

Well

Protection

Area

(TU2),

downgradient

the

leading

edge

the

plume,

protect

the

active

municipal

supply

wells

(Wells

and

from

becoming

contaminated.

One

groundwater

extraction

well

was

installed

TU3

the

Central

Plume

Area

hydraulically

control

the

plume

and

impede

migration

PCE

towards

nearby

active

municipal

supply

wells.

Extracted

groundwater

treated

onsite

and

discharged

the

City’s

storm

sewer

system.

Table

2‐1

lists

the

storm

sewer

and

air

discharge

criteria.

2.3 Treatment Unit Design Summary

The

following

summary

the

treatment

system

design

for

each

the

remaining

three

units

currently

installed

the

Site.

TU1

Operations

TU1

includes

air

sparging

combined

with

SVE,

consistent

with

the

objectives

discussed

Section

2.2.

The

site

layout

for

TU1,

including

the

air

sparge

and

SVE

wellhead

locations,

the

underground

air

sparge

and

SVE

pipe

routes,

and

the

location

the

treatment

building

depicted

Drawing

2‐1.

The

design

basis

for

the

flow

rate

the

air

sparge

system

was

231standard

cubic

feet

per

minute

(scfm)

minimum

pressure

the

wellheads

pounds

per

square

inch

gage

(psig).

The

design

basis

for

the

flow

rate

the

SVE

system

was

217

scfm

2.8

inches

mercury

(Hg)

the

inlet

the

moisture

separator.

There

are

total

air

sparge

wells

and

SVE

wells.

These

wells

were

constructed

Prosonic,

however

Arrowhead

was

responsible

for

the

wellhead

hookups.

The

designed

maximum

and

average

PCE

influent

the

granular

activated

carbon

(GAC)

TU1

are

2,096

parts

per

million

volume

(ppmv)

and

1,048

ppmv,

respectively.

2‐3

The overall system design for TU1 incorporates the following pieces of equipment:

Two

horse

power

(HP)

rotary

screw

air

compressors

with

1.5HP

refrigerated

air

dryer,

moisture

separator

(note

that

the

condensate

from

the

moisture

separator

routed

the

sanitary

sewer

system),

SVE

skid

including

gallon

moisture

separator,

3/4HP

transfer

pump,

inlet

silencer,

5HP

blower,

and

discharge

silencer,

Off‐gas

treatment

system,

consisting

two

vapor

phase

GAC

vessels

with

5,000

pounds

(lbs)

GAC

per

vessel

(refer

Appendix

for

off‐gas

treatment

modeling

data

and

media

usage

estimates),

Appurtenances, including flow control valves, solenoid valves, and sample ports,

Instrumentation,	including	temperature	gauges,	temperature	switches,	pressure	gauges,
pressure	switches,	flow	meters,	flow	transmitters,	and	level	switches,	and

Control panel.

Drawing

2‐2

depicts

the

equipment

arrangement

for

TU1.

This

building

subdivided

into

process

room

and

office.

The

office

houses

the

control

panels,

electrical

service

panels,

and

transformers.

The

off‐gas

treatment

vessels

are

mounted

concrete

pad

located

outside

and

adjacent

the

treatment

building.

Pressurized

air

from

compressor

fed

the

air

sparge

wells

via

individual

continuous

1/2–

inch

diameter

standard

dimension

ratio

(SDR)

High

Density

Polyethylene

(HDPE)

lines.

The

routing

this

piping

depicted

Drawing

2‐1.

Each

air

sparge

wellhead

comprised

flow

control

valve

and

100

psig

pressure

gauge

housed

12‐inch

diameter

well

vault.

The

air

sparge

piping

either

directly

buried

run

through

Polyvinyl

Chloride

(PVC)

conduit.

Pull

boxes

are

also

situated

along

the

piping

routes

(refer

Drawing

2‐1).

The

minimum

burial

depth

the

HDPE

pipe

inches.

Soil

vapor

extracted

from

the

SVE

wells

conveyed

the

SVE

skid

via

2‐inch

schedule

PVC

pipe.

The

routing

this

piping

depicted

Drawing

2‐1.

Each

SVE

wellhead

comprised

flow

control

valve,

vacuum

gauge,

and

sample

port

housed

18‐inch

diameter

man‐way.

The

minimum

burial

depth

the

PVC

pipe

also

inches;

however,

the

pipes

are

sloped

drain

towards

wellheads

sumps

positioned

along

the

piping

routes.

Construction

details

for

the

wellheads

and

the

sumps

are

shown

Drawing

2‐3.

Water

that

accumulates

the

sumps

periodically

extracted

with

the

use

hand‐operated

pump.

Contaminated

vapors

from

the

SVE

wells

are

routed

through

the

off‐gas

treatment

system,

consisting

vapor

phase

GAC.

The

treated

air

stream

discharged

the

atmosphere

through

20‐foot

high

stack

mounted

the

side

the

treatment

building.

anticipated

that

the

system

will

operated

cycled

basis.

The

cycle

operation

for

each

well

(air

sparge

and

SVE)

controlled

with

solenoid

valves.

description

the

system

controls

presented

Section

3.0.

comprehensive

equipment

list

for

TU1

provided

Table

2‐2.

2‐4

TU2

Operations

TU2

include

air

sparging

only,

consistent

with

the

objectives

discussed

Section

2.2.

The

site

layout

for

TU2,

including

the

wellhead

locations,

the

underground

pipe

routes,

and

the

location

the

treatment

building

depicted

Drawing

2‐4.

The

design

basis

for

the

flow

rate

the

air

sparge

system

was

115

scfm

minimum

pressure

the

wellheads

psig.

There

are

total

air

sparge

wells.

The overall system design for TU2 incorporates the following pieces of equipment:

One

rotary

screw

air

compressor

with

1.5

refrigerated

air

dryer,

moisture

separator,

and

gallon

holding

tank

store

water

from

the

moisture

separator,

Appurtenances, including flow control valves, solenoid valves, and sample ports,

Instrumentation,	including	temperature	gauges,	temperature	switches,	pressure	gauges,
pressure	switches,	flow	meters,	flow	transmitters,	and	level	switches,	and

Control panel.

Drawing

2‐5

depicts

the

equipment

arrangement

for

TU2.

This

building

subdivided

into

process

room

and

office.

The

office

houses

the

control

panel,

electrical

service

panels,

and

transformer.

Pressurized

air

from

compressor

fed

the

air

sparge

wells

via

individual

continuous

1/2–

inch

diameter

SDR

HDPE

lines.

The

routing

this

piping

depicted

Drawing

2‐4.

Each

air

sparge

wellhead

comprised

flow

control

valve

and

100

psig

pressure

gauge

housed

12‐

inch

diameter

well

vault.

The

air

sparge

piping

either

direct

buried

run

through

PVC

conduit.

One

pull

box

also

situated

along

the

piping

route

(refer

Drawing

2‐4).

The

minimum

burial

depth

the

HDPE

pipe

inches.

anticipated

that

the

system

will

operated

cycled

basis.

The

cycle

operation

for

each

well

controlled

with

solenoid

valves.

description

the

system

controls

presented

Section

3.0.

comprehensive

equipment

list

for

TU2

provided

Table

2‐3.

TU3

Operations

TU3

include

air

sparging

combined

with

SVE

and

groundwater

extraction,

consistent

with

the

objectives

discussed

Section

2.2.

The

site

layout

for

TU3,

including

the

air

sparge,

SVE

and

groundwater

extraction

wellhead

locations,

the

underground

piping

routes,

and

the

location

the

treatment

building

depicted

Drawing

2‐6.

The

design

basis

for

the

flow

rate

the

air

sparge

system

was

372

scfm

with

minimum

pressure

the

wellheads

psig.

The

design

basis

for

the

flow

rate

the

SVE

system

was

408

scfm

3.2

inches

the

inlet

the

moisture

separator.

The

design

basis

for

the

groundwater

extraction

rate

was

gallons

per

minute

(gpm)

total

head

feet.

There

are

total

air

sparge

wells,

SVE

wells,

and

one

groundwater

extraction

well.

2‐5

The

designed

maximum

and

average

PCE

vapor

influent

the

vapor‐phase

GAC

system

TU3

are

414

ppmv

and

207

ppmv,

respectively.

The

designed

PCE

groundwater

influent

concentration

the

liquid‐phase

GAC

system

1,103

ug/L.

The overall system design for TU3 incorporates the following pieces of equipment:

Two

rotary

screw

air

compressors

with

1.5

refrigerated

air

dryer,

moisture

separator

(note

that

the

condensate

from

the

moisture

separator

routed

the

sanitary

sewer

system),

SVE

skid

including

gallon

moisture

separator,

3/4HP

transfer

pump,

inlet

silencer,

blower,

and

discharge

silencer,

Off‐gas

treatment

system,

consisting

two

vapor

phase

GAC

vessels

with

3,000

lbs

GAC

per

vessel

(refer

Appendix

for

off‐gas

treatment

modeling

data

and

media

usage

estimates),

Grundfos®	Redi‐Flo4	25E15‐8	P.E	electric	submersible	well	pump	and	Franklin	1.5	HP
submersible	motor,

Two liquid bag filters,

Liquid

phase

treatment,

consisting

two

GAC

vessels

with

1,000

GAC

per

vessel

(refer

Appendix

for

treatment

modeling

data

and

media

usage

estimates),

sump

pump

for

the

secondary

containment

(on

stand‐by

the

event

water

accumulates

inside

the

secondary

containment),

which

routes

water

back

though

the

bag

filters

and

liquid

phase

GAC

vessels,

Appurtenances, including flow control valves, solenoid valves, and sample ports,

Instrumentation,	including	temperature	gauges,	temperature	switches,	pressure	gauges,
pressure	switches,	flow	meters,	flow	transmitters,	and	level	switches,	and

Control panel.

Drawing

2‐7

depicts

the

equipment

arrangement

for

TU3.

This

building

subdivided

into

process

equipment

room,

office,

utility

sink,

and

toilet.

The

office

houses

the

control

panels,

electrical

service

panels,

and

transformers.

The

off‐gas

treatment

vessels

and

liquid

phase

treatment

vessels

are

located

within

the

building.

The

bag

filters

and

liquid

phase

GAC

vessels

are

located

within

secondary

containment

structure

capture

potential

water

leaks/spills.

Pressurized

air

from

compressor

fed

the

air

sparge

wells

via

individual

continuous

1/2–

inch

diameter

SDR

HDPE

lines.

The

routing

this

piping

depicted

Drawing

2‐6.

Each

air

sparge

wellhead

comprised

flow

control

valve

and

100

psig

pressure

gauge

housed

12‐

inch

diameter

well

vault.

The

air

sparge

piping

either

direct

buried

run

through

PVC

conduit.

Pull

boxes

are

also

situated

along

the

piping

routes

(refer

Drawing

2‐6).

The

minimum

burial

depth

the

HDPE

pipe

inches.

2‐6

Soil

vapors

extracted

from

the

SVE

wells

are

conveyed

the

SVE

skid

via

2‐inch

schedule

PVC

pipe.

The

routing

this

piping

depicted

Drawing

2‐6.

Each

SVE

wellhead

comprised

flow

control

valve,

vacuum

gauge,

and

sample

port

housed

18‐inch

diameter

well

vault.

The

minimum

burial

depth

the

PVC

pipe

also18

inches,

however,

the

pipes

are

sloped

drain

towards

wellheads

sumps

positioned

along

the

piping

routes.

Construction

details

for

the

sumps

are

shown

Drawing

2‐3.

Water

that

accumulates

the

sumps

periodically

extracted

with

the

use

small

vacuum

pump.

Contaminated

groundwater

extracted

from

the

extraction

well

(EW‐1)

conveyed

the

bag

filters

via

2‐inch

schedule

PVC

pipe.

The

groundwater

then

routed

the

liquid

phase

GAC,

with

treated

water

discharged

the

storm

sewer.

The

location

the

effluent

outfall

shown

Drawing

2‐6.

The

routing

this

piping

depicted

Drawing

2‐6.

Construction

details

the

well

vault

are

shown

Drawing

2‐3.

The

minimum

burial

depth

the

influent

and

effluent

pipe

inches.

Contaminated

vapors

from

the

SVE

wells

are

routed

through

the

off‐gas

treatment

system,

consisting

vapor

phase

GAC.

The

treated

air

stream

discharged

the

atmosphere

through

stack

mounted

the

side

the

treatment

building.

The

air

sparge

and

SVE

system

operated

cycled

basis.

The

cycle

operation

for

each

well

controlled

with

solenoid

valves.

The

groundwater

extraction

well

will

run

continuous

basis.

description

the

system

controls

presented

Section

3.0.

comprehensive

equipment

list

for

TU3

provided

Table

2‐4.

Control Systems

The

control

systems

are

based

480‐volt

(VAC)

control

panel

containing

Operator

Interface

Terminal

(OIT),

programmable

logic

controller

(PLC),

Allen‐Bradley

PowerFlex®

variable

frequency

drive

(VFD)

(TU3

only),

and

associated

24‐volt

(VDC)

power

supplies

for

input/output

(I/O)

circuits.

The

facility

receives

incoming

power

480VAC,

3Ø

from

MonPower

Company

pole‐mounted

transformers.

The

electrical

drop

connects

power

meter

mounted

the

poles.

Power

brought

into

each

building

where

split

between

two

service

panels

and

the

control

panel.

Details

are

provided

the

electrical

schematics

(E‐series

drawings)

from

the

set

as‐built

drawings.

Section

3.0

provides

further

information

regarding

the

control

panel

hardware

and

software.

The

overall

control

logic

scheme

depicted

graphically

process

and

instrumentation

diagrams

(P&IDs),

Drawings

2‐10

through

2‐12.

2.4 O&M Requirements

This	subsection	summarizes	the	specified	requirements	for	operations,	maintenance,	sampling
and	monitoring	to	be	implemented	by	the	O&M	contractor.

2.4.1 Operations

The following are the operational requirements applicable to each TU:

Operate	all	equipment,	systems,	processes,	and	appurtenances	in	accordance	with	the
equipment	manufacturer’s	specifications	and	O&M	instructions,	and	the	approved	O&M

Manual, 2‐7

Extract

groundwater

continuous

basis

achieve

hydraulic

control

the

groundwater

TU3,

Operate air sparge and SVE systems on cycled basis to achieve groundwater cleanup level, Discharge treated vapor to the atmosphere in accordance with air discharge requirements, Discharge treated groundwater at TU3 to the storm sewer in accordance with discharge limits,

Containerize,	characterize,	transport,	and	dispose	of	all	process	and	sampling	waste
residuals	at	an	approved	waste	disposal	facility,

Procure	all	equipment,	spare	parts,	supplies,	and	services	required	for	operation,
maintenance,	monitoring,	and	management	of	the	treatment	systems,

Manage

and

maintain

inventory

equipment,

spare

parts,

supplies,

and

tools

required

for

continuous

operation

with

minimal

downtime,

Monitor	treatment	system	performance,	compliance,	and	remedial	progress	by	collecting
specified	samples	and	field	measurements	(refer	to	Section	10.0),

Prepare

operational

records

and

maintain

project

files

(refer

Section

10.0).

Prepare

and

submit

progress

reports,

Abide by all operational requirements and report any non‐compliant conditions to EPA, Optimize the use of process equipment to minimize operational costs,

Notify

CDM

Smith

Project

Manager

immediately

any

system

downtime

greater

than

hours

any

non‐compliance

with

discharge

requirements,

Provide	routine,	preventative,	and	corrective	maintenance,	including	all	processes,
equipment,	controls,	facilities,	and	appurtenances,

Perform	routine,	preventative,	and	corrective	maintenance	in	accordance	with	the
equipment	manufacturer’s	specifications	and	this	O&M	Manual,

Store

all

tools,

spare

parts,

equipment,

and

supplies

appropriate

storage

area.

Manage

the

inventory

and

maintenance

such

items

minimize

downtime

for

maintenance,

Maintain

good

housekeeping

practices.

Facilities

shall

kept

neat,

organized,

and

litter‐

free.

Clean

and

remove

accidental

spills,

Routinely	inspect	and	maintain	the	physical	condition	of	exterior	facilities,	equipment,	and
grounds	as	follows:

Fencing and locks shall be maintained, and repaired or replaced when necessary, 2‐8

Vegetation

shall

maintained

manner

that

consistent

with

the

surrounding

properties

and

cut

when

necessary,

Touch‐up	painting	shall	be	performed	as	necessary	to	prevent	corrosion	or	other
damage	associated	with	environmental	exposure,

Well

vaults

shall

inspected

for

surface

leaks;

access

hatch

seals

and

grading

shall

replaced/corrected

when

needed,

SVE

sumps

shall

emptied

needed

prevent

water

from

hindering

vapor

flow

from

the

wells,

Structural	support	systems,	such	as	concrete	flooring,	structural	anchoring,	and	guy
wires,	shall	be	periodically	checked	for	structural	integrity	and	adjusted/repaired	if

necessary,

Building	openings	and	access	ways,	including	doors,	louvers,	fans,	and	air	conditioners
shall	be	periodically	checked	for	leakage	and	structural	integrity;	adjust/tighten
hardware,	apply	caulk,	and	replace	weather	stripping	when	needed.

2.4.2 Sampling and Monitoring

part

the

overall

O&M

each

system,

sampling

and

monitoring

activities

will

conducted

evaluate

the

following:

Treatment system compliance to confirm that permitted discharge requirements are being met,

Treatment

system

performance

confirm

that

hydraulic

control

being

maintained

and

that

treatment

systems

are

operating

properly.

Monitor

influent

flow

and

water

quality

from

the

extraction

well,

drawdown

and

hydraulic

control

groundwater,

and

unit

process

performance.

Information

shall

used

support

decisions

regarding

adjustments

the

pumping

rate

and

unit

process

operation,

Remedial

progress

monitoring

changes

source‐area

and

site‐wide

groundwater

quality,

levels,

and

flow

over

time.

This

shall

include

the

areas

subjected

air

sparging,

and

groundwater

extraction.

Information

shall

compared

against

design

assumptions

and

predictions

regarding

remedy

performance,

and

shall

used

refine

such

assumptions

and

predictions

and

the

environmental

monitoring

program

information

gathered.

The long‐term O&M phase of the RA includes two primary sampling programs:

Performance and compliance sampling (groundwater and vapor)

Site‐wide groundwater sampling

The specific requirements for the sampling programs is discussed in a separately bound document.

2‐9

2.4.2.1 Performance Monitoring of Operational Conditions

Performance

monitoring

operational

conditions

will

conducted

prescribed

basis

for

purposes

documentation

and

assess

whether

adjustments

maintenance

required.

The

following

operational

parameters

shall

recorded

prescribed

basis

from

process

instruments,

meters,

and

gauges:

Extraction well water level

Extraction well pump flow rate and totalized flow

Bag filter differential pressure

Liquid granular activated carbon (LGAC) #1 differential pressure

LGAC #2 differential pressure

Air sparge flow rates

Air sparge wellhead pressure

Air sparge manifold pressure

Compressor outlet pressure

SVE wellhead vacuum

SVE manifold vacuum for each well

SVE flow rate from each well

SVE blower flow (extraction) rate

SVE blower inlet vacuum

SVE blower inlet temperature

SVE blower discharge temperature

SVE blower discharge pressure

Vapor granular activated carbon (VGAC) #1 outlet pressure

VGAC #1 differential pressure

VGAC #2 outlet pressure

VGAC #2 differential pressure

Groundwater level measurements in monitoring wells

Other routine operating parameters

3‐1

Section 3 Control Systems Description

The

Treatment

Units

are

equipped

with

programmable

control

systems

which

control

all

automatic

processes

and

facilitate

remote

access

and

remote

alarm

notifications.

Each

Treatment

Unit

functions

stand‐alone

system

with

its

own

control

panel

containing

programmable

logic

controller

(PLC),

Operator

Interface

Terminal

(OIT),

and

associated

control

equipment.

Each

control

panel

powered

uninterruptible

power

supply

which

maintains

power

the

PLC,

OIT,

and

all

input

output

circuits

for

minutes

following

power

outage.

Control

system

components,

remote

access

features

and

operational

instructions

are

described

the

Sections

that

follow.

The

description

the

control

systems

based

the

components

and

features

common

the

three

systems

currently

installed

Site

with

exceptions

noted

throughout.

3.1 Control Panels

Each

control

panel

equipped

with

Allen‐Bradley

VersaView

1500P

15‐inch

touch‐screen

OIT

from

which

the

on‐site

operator

and

remote

users

control

and

monitor

all

automated

processes

the

system

(refer

Appendix

P).

The

VersaView

OIT

industrial

computer

with

Windows

Pro

32‐bit

operating

system,

CD‐RW

drive,

3‐1/2

inch

floppy

drive,

keyboard,

mouse,

and

several

serial

and

USB

ports

for

peripheral

devices.

The

OIT

connected

Allen‐

Bradley

SLC

5/05

programmable

controller

located

the

panel

behind

the

OIT.

Two

24VDC

power

supplies

are

provided

the

control

panel

TU3

–

one

for

analog

I/O

and

the

other

for

the

discrete

24VDC

circuits

shown

the

electrical

schematics.

TU1

contains

one

24VDC

power

supply

for

analog

I/O.

TU2

does

not

contain

24VDC

power

supply

there

are

not

any

analog

other

24VDC

circuits.

The

TU3

control

panel

also

includes

Allen‐Bradley

PowerFlex®

VFD

used

control

the

speed

(pumping

rate)

the

well

pump

extraction

well

EW‐1.

3.2 Control Logic Overview

The

control

systems

for

each

Treatment

Unit

are

programmed

with

ladder

logic

implement

interlocks,

control

system

processes,

cycle

process

equipment,

initiate

local

and

remote

alarms,

and

safely

start

and

shut

down

each

system.

The

control

interlocks

are

listed

Tables

3‐1

through

3‐3

for

TU1,

TU2

and

TU3,

respectively.

AUTO

mode

must

selected

for

each

motor

solenoid

valve

order

for

the

interlocks

function

designed.

Any

piece

equipment

placed

MAN(ual)

mode

will

have

its

control

interlocks

bypassed.

The

control

interlocks

begin

function

automatically

upon

start

up.

Clicking

the

System

START

button

the

MAIN

screen

first

removes

any

previously

existing

stop

commands,

places

all

process

equipment

AUTO

mode,

and

then

sequentially

starts

the

following

order:

TU1

SVE blower, B‐1

SVE solenoid valves (order determined by well cycle schedule and time of day at startup)

Section 3 Control Systems Description

3‐2

Transfer pump, P‐1

Air compressor, AC‐1 (depending on compressor cycle schedule and time of day at startup)

Air compressor, AC‐2 (depending on compressor cycle schedule and time of day at startup)

Sparge solenoid valves (order determined by well cycle schedule and time of day at startup)

TU2

Air compressor, AC‐1

Sparge solenoid valves (order determined by well cycle schedule and time of day at startup)

TU3

SVE blower, B‐1

SVE solenoid valves (order determined by well cycle schedule and time of day at startup)

Transfer pump, P‐1

Air compressor, AC‐1 (depending on compressor cycle schedule and time of day at startup)

Air compressor, AC‐2 (depending on compressor cycle schedule and time of day at startup)

Sparge solenoid valves (order determined by well cycle schedule and time of day at startup)

Extraction well pump

The systems can also be started by the START pushbutton on the front of the control panel.

The

START

sequence

tests

for

all

applicable

control

interlocks

and

possible

alarm

conditions

and

prevents

any

component

the

entire

system

from

starting

depending

these

conditions,

outlined

Tables

3‐1

through

3‐3.

TU3

this

includes

well

water

level

controls

which

prevent

the

pump

from

running

dry

with

low

level

shutdown

interlock

measured

with

submersible

water

level

transmitter

installed

the

well,

high

water

level

condition

detected

the

catch

basin

outfall.

The

air

compressors

typically

are

allowed

run

long

the

SVE

blower

maintaining

sufficient

vacuum

and

there

are

internal

alarm

conditions

within

these

units,

i.e.,

internal

fault

condition.

The

SVE

blowers

typically

are

allowed

run

long

water

levels

the

moisture

separators

are

kept

below

the

high‐high

level

alarm

condition.

3.3 Control System Functionality Overview

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated Sep 6, 2024.

Intimately	familiar	with	all	permit	regulations	and	enforcement	requirements.	Maintains
accurate	and	orderly	managed	O&M	records.

A	supervisory	position	directing	the	overall	operation,	maintenance,	monitoring,	and
management	of	air	sparging,	soil	vapor	extraction	(SVE),	and	groundwater	treatment

In	charge	of	the	day‐to‐day	operation,	maintenance,	monitoring,	and	management	of
treatment	systems,	extraction	well	systems	and	associated	facilities,	attainment	of	effluent