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SP-TDY_2018_Annual_SMP_rev_1_clean
Arcadis U.S., Inc.
2300 Clayton Road
Suite 400
Concord
California 94520
Tel 925 274 1100
Fax 925 726 0121
www.arcadis.com
Page: 1/4
Roger Papler Engineering Geologist San Francisco Bay Regional Water Quality Control Board 1515 Clay Street, Suite 1400 Oakland, California, 94612
Subject:
Revision No. 1 to Proposed Groundwater Self-Monitoring Plan (SMP) for the 2018 Annual Monitoring Event for the Spectra-Physics Teledyne Semiconductor Superfund Site (the Site) comprised of the Former Teledyne Semiconductor and Former Spectra-Physics Lasers, Inc., Sites Located in Mountain View, California
Dear Mr. Papler:
Please find below the proposed Groundwater Self-Monitoring Plan for the 2018 Annual Monitoring Event (Annual SMP) for the above referenced Site. Arcadis U.S., Inc. (Arcadis) prepared this proposal on behalf of TDY Industries, LLC, regarding the former Teledyne Semiconductor Property located at 1300 Terra Bella Avenue, Mountain View, California, and Newport Corporation, successor to Spectra-Physics Lasers, Inc. and Thermo Fisher Scientific, Inc., as indemnitor to Newport regarding the former Spectra-Physics Lasers, Inc. (Spectra-Physics) Property located at 1250 West Middlefield Road, Mountain View, California. This plan consists of a groundwater well sampling program to be conducted in the Study Area (Figure 1).
Background
Groundwater monitoring activities in the Study Area commenced in 1982. The SMP has historically been revised, as needed, to evaluate performance of continuing groundwater remediation. Ongoing monitoring has been conducted in accordance with the revised SMP submitted on February 9, 1994. Revisions to the SMP were approved on April 2, 1996, September 2003, and most recently in March of 2007 as part of the Monitored Natural Attenuation (MNA) study (LFR 2007). The Regional Water Quality Control Board (RWQCB) is currently in the process of updating the Board order for the Site, which will include a revised SMP. Arcadis, on behalf of TDY Industries, LLC, Newport Corporation and
ENVIRONMENT Date:
December 6, 2018 Contact:
Ryan Mattson Phone:
925-296-7835 Email: [email protected]
Our ref:
EM001727.0096
arcadis.com SP-TDY_2018_Annual_SMP_rev_1_clean
Mr. Roger Papler December 6, 2018
Page: 2/4
Thermo Fisher Scientific, submitted a proposed SMP for inclusion the updated Board Order. The Annual SMP (detailed below) reflects this proposed SMP.
Summary of 2018 Annual SMP and Rationale
The proposed SMP was developed to accomplish the following primary objectives: 1) establish plume stability; and 2) monitor long-term volatile organic compound [VOC] concentration trends in both plume core and distal areas. Per the proposed SMP, Arcadis proposes to sample the following wells for the 2018 annual event:
1. Thirteen (13) wells located along the central axis of the VOC plume will be used to monitor VOC concentration trends in the plume core.
2. Twelve (12) wells, including one well (PZ-5S) that also serves as a plume core monitoring well, will be used to monitor source areas at the former Spectra-Physics Property and former Teledyne Semiconductor Property. These wells will be sampled for VOCs as well as additional monitored natural attenuation (MNA) parameters, including dissolved gases (methane, ethane, and ethene) and field-measured pH, dissolved oxygen, and oxidation-reduction potential (ORP). These data will be used to evaluate anaerobic biodegradation as a potential ongoing mechanism for natural attenuation in these areas. Three of the 12 wells are located at the former Teledyne Semiconductor property and will be sampled for enhanced reductive dechlorination (ERD) treatment performance by Fishbeck, Thompson, Carr & Huber (FTCH).
3. Seventeen (17) wells will be used to monitor VOC concentration trends in distal portions of the plume. One of these wells (NB-18I) is also part of the MNA study following shutdown of extraction well E-13.
4. Twenty-five (25) wells, located at the plume boundaries, will be used to assess plume stability. One of these wells (27I) is also part of the MNA study following shutdown of extraction well E-13.
In addition, the following wells will be sampled as part of shorter-term monitoring programs that are ongoing at the Site:
1. Eight additional wells will be sampled for VOCs to support the MNA trial evaluation at the former Spectra-Physics Property. Two of the eight wells will also be sampled for additional MNA parameters.
2. In addition to the three wells included in the proposed SMP, three additional wells will be sampled by FTCH for ERD performance monitoring at the former Teledyne Semiconductor Property.
Lastly, at the request of the RWQCB, three surface water samples will be collected from historical sampling locations along Permanente Creek (near Amphitheater Parkway, Charleston Road, and West Middlefield Road) and will be analyzed for VOCs. The purpose for the one-time sampling at these locations is to current concentrations with historic results.
Table 1 contains a list of all wells proposed for the 2018 Annual SMP. The impacted groundwater is divided into three discrete “Groundwater Zones”: Shallow, Upper-Intermediate, and Lower-Intermediate. The zone in which the well is screened is indicated as “Designated Groundwater Zone”. A regionally extensive, deeper artesian aquifer is not sampled as part of the SMP.
arcadis.com SP-TDY_2018_Annual_SMP_rev_1_clean
Mr. Roger Papler December 6, 2018
Page: 4/4
Enclosures:
Tables
1. Proposed List of Wells for Performance and Natural Attenuation Monitoring 2. Summary of Proposed Analytical Methods for 2018 Annual Monitoring Event
Figures
1. Site Vicinity Map and Property Locations 2. Groundwater Monitoring Network, Shallow Zone Wells - 2018 Annual Monitoring Event 3. Groundwater Monitoring Network, Upper-Intermediate Zone Wells – 2018 Annual Monitoring Event 4. Groundwater Monitoring Network, Lower-Intermediate Zone Wells – 2018 Annual Monitoring Event
Table 1Proposed List of Wells for Performance and Natural Attenuation Monitoring
WellIdentification
Designated Groundwater
Zone1
Analytical
Parameters2 Comment
S-2 S VOC Plume delineation
S-3 S VOC Distal monitoring
S-7 S VOC Plume delineation
S-11 S VOC Plume delineation
S-13 UI VOC Plume delineation
S-15I UI VOC Plume delineation
S-18 S VOC Plume delineation
S-19 S VOC Core monitoring
T-6S S VOC, MNA Source area monitoring
T-11 UI VOC Plume delineation
T-14 S VOC Core monitoring
T-15 S VOC Plume delineation
T-34S S VOC Plume delineation
PZ-2S S VOC, MNA Source area monitoring
PZ-5S S VOC, MNA Source area monitoring; core monitoring
PZ-7S S VOC Plume delineation
PZI-1 UI VOC, MNA Source area monitoring
IW-1B S VOC, MNA MNA monitoring for former Spectra-Physics Property
IW-3C S VOC MNA monitoring for former Spectra-Physics Property
IW-3D S VOC, MNA Source area monitoring; MNA monitoring for former Spectra-Physics Property
IW-5B S VOC MNA monitoring for former Spectra-Physics Property
IW-6A S VOC MNA monitoring for former Spectra-Physics Property
IW-7B S VOC MNA monitoring for former Spectra-Physics Property
PMW-2S S VOC, MNA Source area monitoring; MNA monitoring for former Spectra-Physics Property
PMW-4S S VOC MNA monitoring for former Spectra-Physics Property
PMW-5S S VOC, MNA MNA monitoring for former Spectra-Physics Property
GMW-4S S VOC Supplemental MNA monitoring for former Spectra-Physics Property
MW-12UI UI VOC, MNA Source area monitoring
MW-14LI LI VOC, MNA Source area monitoring
MW-15LI LI VOC, MNA Source area monitoring
A-8S S VOC, MNA, ERD ERD performance monitoring, to be sampled by FTC&H
MW-17LI LI VOC, MNA, ERD ERD performance monitoring, to be sampled by FTC&H
MW-18UI UI VOC, MNA, ERD ERD performance monitoring, to be sampled by FTC&H
MW-19S S VOC, MNA, ERD ERD performance monitoring, to be sampled by FTC&H
MW-20LI LI VOC, MNA, ERD ERD performance monitoring, to be sampled by FTC&H
MW-23US S VOC, MNA, ERD ERD performance monitoring, to be sampled by FTC&H
NC-1S S VOC Plume delineation
NC-2I UI VOC Plume delineation
W-1 UI VOC Distal monitoring
W-2 S VOC Distal monitoring
W-2A UI VOC Plume delineation
W-3 S VOC Distal monitoring
W-4 S VOC Plume delineation
W-4A UI VOC Plume delineation
Teledyne Semiconductor / Spectra-Physics Wells
North Bayshore Area Wells
Table_1 dft_revised (2) Page 1 of 2
Table 1Proposed List of Wells for Performance and Natural Attenuation Monitoring
WellIdentification
Designated Groundwater
Zone1
Analytical
Parameters2 Comment
W-6 S VOC Plume delineation
W-6A UI VOC Plume delineation
Well 23 S VOC Distal monitoring
27I UI VOC Plume delineation; MNA monitoring downgradient of E-13
28S S VOC Plume delineation
GMW-1S S VOC Distal monitoring
GMW-1I UI VOC Core monitoring
GMW-3S S VOC Distal monitoring
NB-1I UI VOC Distal monitoring
NB-18I UI VOC Distal monitoring; MNA monitoring downgradient of E-13
NB-25 S VOC Plume delineation
NB-26I UI VOC Distal monitoring
E-1 S VOC Core monitoring
E-4 S VOC Core monitoring
E-6 S VOC Distal monitoring
E-7 S VOC Distal monitoring
E-9 S VOC Core monitoring
E-10 UI VOC Core monitoring
E-12 UI VOC Core monitoring
E-13 UI VOC Distal monitoring
E-14 UI VOC Core monitoring
E-15 UI VOC Plume delineation
E-18 S VOC Core monitoring
E-19 UI VOC Distal monitoring
ES1S S VOC Distal monitoring
ES3I LI VOC Core monitoring
ES4I UI VOC Core monitoring
ES5S S VOC Core monitoring
PS3I UI VOC Distal monitoring
MS-1S S VOC Plume delineation
MS-2I UI VOC Plume delineation
MS-6I LI VOC Plume delineation
MS-9S S VOC Plume delineation
MS-10S S VOC Distal monitoring
Permanente Creek at Landfill not applicable VOC Surface water monitoring
Permanente Creek at Charleston not applicable VOC Surface water monitoring
Permanente Creek at Middlefield not applicable VOC Surface water monitoringNotes:
1 S = Shallow Zone; UI = Upper-Intermediate Zone; LI = Lower-Intermediate Zone
2 VOC = volatile organic compounds; MNA = additional monitored natural attenuation parameters; see Table 2
ERD = enhanced reductive dechlorination
FTC&H = Fishbeck, Thompson, Carr, and Huber, Inc.
MNA = monitored natural attenuation
SMP = Self-Monitoring Plan
Bold indicates wells that were added to the revised SMP list.
Italicized indicates wells to be sampled by FTC&H*.
* FTC&H will: 1) collect field measurements of dissolved oxygen, temperature, turbidity, specific conductivity, pH, and redox potential; and
2) send samples for laboratory analysis of chlorinated VOCs, total organic carbon, nitrate+nitrite, sulfate, and dissolved ethane,
ethene, and methane. The extra measurements and analytes are needed to assess the performance of remedial ERD activities, but are
also useful for characterizing MNA.
Spring Street Area Wells
Surface Water Samples
Table_1 dft_revised (2) Page 2 of 2
Table 2Summary of Proposed Analytical Methodsfor 2018 Annual Monitoring Event
Analyte Lab Test Method -Procedure
SampleContainer Data Use
dissolved oxygen (DO)field meter with DO probe or field test kit using the
Winkler titration techniqueNA
Oxygen is consumed to create an anaerobic environment. Concentrations less than 1 mg/l generally indicate anaerobic conditions. Reductive conditions are more favorable for natural attenuation.
pH, conductivity, temperature, and turbidity
field meter with appropriate probes
100 mlplastic
Monitors stabilization of parameters for sampling formation water.
oxidation-reduction potential (ORP)
field meter with ORP probe NA
Influenced by the nature of biological degradation of contaminants. Depressed ORP indicates a reductive environment.
Volatile Organic Compounds (VOCs) Analysis
VOCsEPA Method 8260 for 8010 list compounds (GC/MS)
40 ml VOA Primary analysis for assessing plume migration or changes.
Additional MNA Analyses
ethene and ethane Microseeps Method AM20Gax 40 ml VOA By-product of dehalogenation.
methane Microseeps Method AM20Gax 40 ml VOA By-product of anaerobic activity. Presence indicates
anaerobic/methanogenic environment.
Notes:EPA = United States Environmental Protection AgencyGC/MS = gas chromatograph/mass spectrometrymg/l = milligrams per literml = milliliterNA = not applicableVOA = volatile organic analysis
Field Testing Methods
Laboratory Analytical Methods
Table_2 dft.xlsx Page 1 of 1
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EXTRACTION WELL (North Bayshore)
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2018 ANNUAL MONITORING EVENT
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MONITORING WELL (Spectra-Physics)
MONITORING WELL (Semiconductor)
EXTRACTION WELL (Spring Street)
MONITORING WELL (Spring Street)
MONITORING WELL (North Bayshore)
EXTRACTION WELL (North Bayshore)
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2018 ANNUAL MONITORING EVENT
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