TC - Item 6A - Installation of Red Curb At 3 Locations - Access To EPA Mandated Groundwater Extraction WellsGIr
ROSEMEAD TRAFFIC COMMISSION
STAFF REPORT
TO: TRAFFIC COMMISSION
FROM: CHRIS MARCARELLO, PUBLIC WORKS DIRECTOR
DATE: JULY 12, 2012
SUBJECT: INSTALLATION OF RED CURB AT 3 LOCATIONS —ACCESS TO EPA
MANDATED GROU NDWATER EXTRACTION WELLS
SUMMARY
The El Monte Operable Unit (EMOU) is a portion of the U.S. Environmental Protection
Agency (EPA) San Gabriel Valley Superfund Project — a legally mandated groundwater
cleanup effort in several locations throughout the San Gabriel Valley. Such cleanup
activities are being conducted as a result of years of illegal dumping of toxic materials into
nearby waterways, which ultimately contributed to the contamination of both shallow and
deep groundwater supplies. As part of these court- mandated activities, former polluters are
being required to fund efforts to install cleanup extraction wells that are designed to remove
contaminated ground water. The City is not a participant in the cleanup activities.
However, due to the location of the contaminated groundwater, it is necessary to permit the
installation of cleanup wells within the City in order to effectively remove the contamination.
Based on these cleanup efforts, the EPA/EMOU will install 3 groundwater cleanup
extraction wells in the City. Once installed, these wells will be located in public right -of -way
areas (sidewalk or parkway areas) and will require regular access from maintenance
vehicles and personnel. Due to these access requirements, red curbing is being required
to allow maintenance vehicles uninterrupted availability to each well site.
Staff Recommendation
It is recommended that the Traffic Commission recommend to the City Council that red
curbing be installed at 3 locations — adjacent to 3787 Brookline Avenue, 9326 Ralph Street,
and 9448 Guess Street — upon installation of groundwater cleanup wells.
ANALYSIS
The El Monte Operable Unit (EMOU) is a portion of the U.S. Environmental Protection
Agency (EPA) San Gabriel Valley Superfund Project — a legally mandated groundwater
cleanup effort in several locations throughout the San Gabriel Valley. For years, efforts
have been made to clean up groundwater supplies that resulted from years of dumping
toxic materials into nearby waterways. Such dumping ultimately contributed to the
contamination of groundwater supplies. It is important to remember that the City is not a
participant in the cleanup activities. However, due to the location of the contaminated
groundwater, it is necessary to permit the installation of cleanup wells within the City in
order to effectively remove any contamination.
Traffic Commission Meeting
July 10, 2012
Page 2 of 2
The EMOU is located in eastern portions of the City — south of Valley Boulevard, north of
the Interstate 10 freeway, and east of Rosemead Boulevard. Using modeling software,
geotechnical engineers have been able to identify specific well locations that will be used to
extract contaminated water. Once extracted, this water would be pumped via pipelines to a
water treatment facility, cleaned, and then be made available for reuse. In total, there are 3
extraction wells locations in Rosemead adjacent to the following properties — 3787
Brookline Avenue, 9326 Ralph Street, and 9448 Guess Street. Each location has been
studied and identified as an optimum location to remove contaminated groundwater
supplies.
Over the last year, representatives from the EPA/EMOU have taken steps to inform the
public regarding the contaminated groundwater and mandated cleanup activities. These
steps have included the preparation of a California Environmental Quality Act (CEQA) Initial
Study, individual meetings with residents, several publicly noticed meetings, and a
community workshop. Meeting notices were mailed to residents in a 300 foot radius in
advance of each public meeting and workshop. As a result of this public involvement, input
was received from residents and according to the EPA/EMOU representatives, has resulted
in changes to some of the well locations.
As planned, the 3 extraction wells will be located in the public right -of -way adjacent to
residential properties (see Attachment 1). The construction of the wells will be a 24 -hour
per day process for a number of weeks. After construction, at -grade utility boxes will be
installed that will maintenance personnel access to the wells for operational checks or
repairs. The wells will be monitored daily, requiring a need for parking restrictions in order
to maintain clear access to each well site. It is anticipated that the well construction will be
completed in 3 phases starting this fall and lasting nearly 1 year. Red curbing is to be
installed at each location following the completion of construction.
Notices have been distributed to properties within a 300 foot radius of each proposed
extraction well location.
Submitted by:
V
Chris Marcarello
Public Works Director
Attachments
1: Location Map and Proposed Red Curb
2: Construction Notice
3: Outreach Mailing Locations
Well Equipping and Operations
and Maintenance
• Well Equipping includes:
Well head enclosure
• Electrical vault
Electrical vault vent enclosure
Extraction vault
Air release valve and vent enclosure
Sampling port enclosure
Telemetry pole
Red curb for maintenance parking
Well Equipping Installation per well location (5
weeks):
• Installelectricalservice —t week
• Install Automationrrelemetry service -2
weeks
• Well head completion, vault installation,
vaNehent enclosure construction —2 weeks
• Operations and Maintenance:
Following construction activities, the City of
El Monte will be maintaining and operating
production wells
Frequent visits daily during first 6 months of
system start -up
Vis'ns reduced to oft per day thereafter
unless maintenance is required
Rod curb is dedicated for maintenance
vehicle parking
DRAFT
NOTICE OF CONSTRUCTION ACTIVITY
The purpose of this notice is to inform you that
construction activities associated with the El Monte
Operable Unit portion of the U.S. Environmental
Protection Agency (EPA) San Gabriel Valley Superfund
Sites will be occurring in the vicinity of your residence.
The East Side Performing Settling Defendants
(ESPSDs), under agreementwith the EPA, are preparing
to install three groundwater production wells and
associated pipelines in the City of Rosemead. Thewells
and pipelines will be installed as part of a project to clean
up groundwater within this area. Geosyntec Consultants
( Geosyntec) and their subcontractors will be performing
this work on behalf of the ESPSDs.
Construction activity will occur in three phases; well
installation, pipeline construction, and production well
equipping. Construction activities will result in the partial
closure of roads during portions of the project. Work will
be performed on weekdays between the hours of 7 AM to
5 PM using a truck - vaunted drill rig and backhoe. The
construction activities do not expose anyone in the area
to any chemicals that may be present in the groundwater.
Production Well Installation
During well drilling, soil and water removed from the
borehole will be contained and then removed from the
site when the project is completed. The street and
sidewalk will be cleaned after the drill rig is removed and
repaired as necessary. Sound reducing enclosures will
be constructed around the drilling operation to minimize
noise impacts on surrounding residents. Well testing will
occur after installation and will be completed during the
day using a smaller truck and generator. The EPA has
granted permission to discharge well testing water from a
hose to the nearest storm drain catch basin at each well
location.
The groundwater production wells will be located at 3787
Brookline Avenue, 9326 Ralph Street, and 9448 Guess
Street. Groundwater production well installations and
well testing are expected to begin in early August, 2012.
The following schedule is currently anticipated:
Well DEW -1 (3787 Brookline Avenue)
August and September 2012
Well DEW -2 (9326 Ralph Street)
September and October 2012
Well DEW -3 Installation (9448 Guess Street)
October and November 2012
Pipeline Construction
The pipelines connecting the three wells will be
constructed along Ralph Street, Rio Hondo Avenue,
Guess Street, and Strang Avenue and will tie into an
existing pipeline located near the corner of Strang
Avenue and Valley Boulevard (see map below). During
pipeline construction, minimal volumes of soil that are
displaced during trenching activities will be contained and
then removed from the site as pipeline sections are
completed. Repairs to the street will be done at the
completion of each pipeline section. Pipeline installation
activities are anticipated to occur between February and
June 2013.
Well Equipping
Well equipping includes below ground vaults and above
ground vent enclosures, well head enclosures, and
telemetry poles in the immediate vicinity of the production
wells. During well equipping, minimal volumes of soil that
are displaced during excavation activities will be
contained and removed from the site. Repairs to the
street, sidewalk, and parkway will be done after well
equipping. Well equipping is anticipated to occur
between April and June, 2013.
Community Outreach
A community information meeting will be held in the
Savannah School Cafeteria between 6PM and 8PM on
June_XX, 2012. Residents are welcome to stop by
anytime during the meeting to learn about the project and
discuss any questions or concerns with the project staff.
Refreshments will also be served.
A translated version of this notice can be found on the
website referenced below. (Spanish)
A translated version of this notice can be found on the
website referenced below. (Mandarin)
A translated version of this notice can be found on the
website referenced below. (Vietnamese)
htto: //w . eoa .gov /region09 /SanGabrielE(Monte
Savannah School is located at 3720 Rio Hondo Avenue
in Rosemead, California.
Groundwater Clean -Up Project
Consists of hydraulic control of impacted groundwater
by extraction, treatment of extracted groundwater, and
re- injection of treated water
Scope
- 1 treatment facility
- 5 extraction wells
- 3re- injection wells
- 11 piezometers
- 1.6 miles of conveyance piping
Southern Deep Zone Remedy
Consists of hydraulic control of impacted groundwater
by extraction, treatment of extracted water to exceed
drinking water standards, and deliver to the City of El
Monte municipal water distribution system
I treatment facility
3 water production wells
3 piezometers
1.3 miles of subsurface pipelines
Construction Schedule
Well Drilling & Installation
• Early August 2012 —March 2013
• Traffic control setup
• Drilling and well installation of 25 wells
• Well development and aquifertesting
Pipeline Installation & Construction
• Early August 2012 —April 2013
• Traffic control setup
• Excavation of pipeline trenches up to 4 -6 ft. below
grade using a backhoe excavator
• Pipeline installation at 4 ft. below grade
• Trenches will be backfiIled and street surfaces
restored
Groundwater Treatment Plant Construction
• October 2012 -April 2013
• Shallow and deep zone treatment units will be
located at the same treatment facility
• Placement of treatment equipment will provide
adequate ingress and egress for vehicles and
personnel required for operations and
maintenance activities.
Well Equipping Installation
• March 2013 —May 2013
• Shallow extraction and re- injection wells will be
constructed in subsurface traffic rated vaults
• Equipment for Deep Zone production wells will
be constructed in both subsurface vaults and
above ground enclosures within the utility
easements in public rights -of -way.
Eastern Shallow Zone Remedy
Pipeline Construction Timeline
in Public Rights -of -Way
Shallow Pipeline (El Monte)
A. Pipeline De Garmo Ave.1 Railroad Ave to Eastern side
of Gibson Park — July & August 2013
Deep Pipeline (Rosemead & El Monte)
B. Pipeline Shirley AveJ Rose AveJ Gibson St. -
December 2012 &January 2013
C. Pipeline Strang AveJ Guess St. & Brookline Ave —
February 2013
Pipeline Construction Activities
Traffic Control.
Prior to construction,
traffic control plans
will be developed to
minim¢¢ traffic
impacts and provide
a sate construction
site
Signs, lighting, and
barricades will be
used temporarily
during construction
to safely divert traffic
Access to residences
and emergency
services will be
maintained at all
times during
construction
Open Trench Excavation.
Trench will range from
46 ff. deep
Trench walls will be
supported or shored as
needed
Pipeline trenches will be
excavated using a
backhoe
Soil will be stored on
site or hauled off -site
Installation and Backfill
Pipelines will be installed generally at 4
feet below grade
Prior to backfilling appurtenant
structures will be installed as required
Once pipeline installed the trench will be
backfilled and compacted
Street surfaces will be restored along
with traffic lane stripping
D. Pipeline Guess St. to Rio Hondo Ave. to Ralph St. —
March and April 2013
Well Drilling & Testing Timeline
Shallow Zone Wells:
5 extraction wells, 3 injection wells, ll piezometers
Installation —2 to 4 weeks per well site
Aquifer Testing — Intermittently over 60 day period
Deep Zone Wells:
3 production wells, 3 piezometers
Installation — 5 weeks per well site
• Aquaer Testing— Intermittently over 6 week period
• Access to residences and emergency services will be
maintained at all times during construction
Well Drilling & Aquifer Testing
Activities
traffic Control
• Prior to drilling, traffic control plans will be developed to
minimize traffic impacts and provide a safe construction
site
Signs, lighting, and barricades will be used temporarily
during construction to safety dive" nrl c
Drilling & Well Installation
Construction activities do not expose anyone in the area
to any chemicals that may be present in the groundwater
Sound curtain enclosures will be constructed around
drilling sites located in public right f -way
Work will be performed on weekdays between T AM and 5
PM for approximately 2£ weeks per well site
Drill cuttings and drilling fluid will be containerized on.
site and transported for oDiite disposal
Drilling locations in public dgh[sof -way will be staffed
with security for nights and weekends
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Well Development & Aquifer Testing
• Well Development is the process of removing
sediment and drilling fluid from the well
following installation.
Well Development utilizes specialized tools and
pumps to enhance water quality and the
efficiency of the well
Aquifer testing is the process of pumping a
well at different Dow rates and durations to test
the performance of the well and to evaluate the
properties of the aquifer
Water produced during development and
aquifer testing activities will be discharged to
storm drains and where required, will be
treated prior to discharging
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