B08_ATCH_1_SOW.pdf

Statement of Work for

Passive Flux Meters and Lab Analysis Services

1.0 SCOPE

The U.S. Geological Survey (USGS) Washington Water Science Center (WAWSC) has a project requirement for determining contaminant flux and groundwater flow in groundwater wells. The project requires acquisition and delivery of commercially available Passive Flux Meters (PFMs) and lab inspection services. The project also requires a staggered delivery schedule for the PFMs.

The equipment shall be delivered to the USGS, Tacoma, WAWSC office. It is the Government’s intent that a single contractor be awarded this contract and be responsible for the accomplishment of all work detailed by this SOW.

1.1 Background. The USGS Tacoma office is currently working on a study to gain better understanding of the transport of per- and polyfluoroalkyl substances (PFAS) in groundwater at the U.S. Army’s Yakima Training Center (YTC) in the Yakima River Basin. PFAS are known hazardous, man-made chemicals, that have been linked to adverse health effects in humans, including cancer. Preliminary results from an ongoing USGS indicate that unlined irrigation canals on YTC are contributing considerable recharge during the irrigation season, which may affect groundwater flow and PFAS transport. The objective of this study is to directly quantify PFAS flux and groundwater-flow rates at YTC before and after piping the irrigation canals using PFMs.

Completion of the proposed work will provide foundational information to the U.S. Army that will inform and direct current and future subsurface-remediation efforts near the YTC. The efficient remediation of subsurface contaminants helps to ensure that on- and off-base drinking-water supplies remain potable for all water users. The information provided will allow them to make informed decisions on aquifer resource management that protect human health and secure military preparedness.

2.0 APPLICABLE DOCUMENTS

Not applicable.

3.0 GENERAL REQUIREMENTS/SPECIFICATIONS

The Contractor shall (1) construct/manufacture, and deliver a total 72 PFMs, in 6 different size and sampling configurations, to the Tacoma USGS Office, (2) provide lab analysis services, and (3) provide an Excel data report(s), in accordance with the salient characteristics and requirements described below.

USGS shall be responsible for (1) installation, retrieval, and sampling of the PFMs, and

(2) shipment of samples to the vendors’ specified location for analysis.

3.1 Salient Characteristics for PFM’s:

1. Shall consist of self-contained devices, that are inserted into a well or boring, for measuring water and contaminant fluxes in porous media.

2. Shall be capable of determining contaminant mass flux of (PFAS EPA method 1633 list of 40 analytes by Isotope Dilution) and groundwater flow (Darcy) velocity.

3. Shall be capable of simultaneous evaluation of both water and contaminant fluxes under natural gradient conditions.

4. Shall be capable of cumulative measurement of the contaminant flux, making the results increasingly less sensitive to daily fluctuations in groundwater flow or contaminant concentrations.

5. Shall be capable of providing a vertical profile of horizontal fluxes.

6. Shall require no electrical power or pumping to operate.

7. Shall employ the use of EPA approved technology.

8. PFM’s shall consist of the following configurations:

- 2 ea. x 5 ft. long PFM’s with 2-inch diameters and 3 sampling intervals per

PFM. Shall include 6 total samples analyzed for Darcy velocity and PFAS (1633 list of 40 by Isotope Dilution) fluxes.

- 2 ea. x 5 ft. long PFM’s with 4-inch diameters and 3 sampling intervals per

PFM. Shall include 6 total samples analyzed for Darcy velocity and PFAS

- 27 ea. x 5 ft. long PFM’s with 2-inch diameters and 3 sampling intervals per

PFM. Shall include 81 total samples analyzed for Darcy velocity and PFAS

- 7 ea. x 5 ft. long PFM’s with 4-inch diameters and 3 sampling intervals per

PFM. Shall include 21 total samples analyzed for Darcy velocity and PFAS

- 27 ea. x 5 ft. long PFM’s with 2-inch diameters and 2 sampling intervals per

PFM. Shall include 54 total samples analyzed for Darcy velocity and PFAS

- 7 ea. x 5 ft. long PFM’s with 4-inch diameters and 2 sampling intervals per

PFM. Shall include 14 total samples analyzed for Darcy velocity and PFAS

3.2 Lab Analysis. The vendor shall provide lab analysis of all samples as listed above (a total of 182 samples). Samples shall be analyzed to determine the concentration of contaminants absorbed into the PFM and the amount of resident tracers leached from the PFM (used to quantify Darcy flux).

USGS shall be responsible for sending samples for analysis to the vendors’ specified location.

3.3 Lab Analysis Data Report. The vendor shall provide a detailed data report (Excel) indicating Darcy velocity and PFAS mass flux results for all the sampling intervals in which the PFM’s were deployed. The lab reports should also provide the analytical limits (for example, detection limits and reporting limits) for all laboratory analytes.

4.0 DELIVERY AND PERFORMANCE.

4.1 Delivery Period for Equipment/Report(s). The PFM’s and Data Report(s) shall be delivered in accordance with the schedule listed below.

4.2 Delivery Schedule of PFM’s. PFM’s shall be delivered in accordance with the schedule listed below:

60 days after receipt of order – for pilot study

- 2 ea. x 5 ft. long x 2" diameter PFAS/Darcy PFM’s

- 2 ea. x 5 ft. long x 4" diameter PFAS/Darcy PFM’s

150 days after receipt of order – for full deployment

- 27 ea. x 5 ft. long x 2" diameter PFAS/Darcy PFM’s

- 7 ea. x 5 ft. long x 4" diameter PFAS/Darcy PFM’s

510 days after receipt of order – for full deployment

- 27 ea. x 5 ft. long x 2" diameter PFAS/Darcy PFM’s

- 7 ea. x 5 ft. long x 4" diameter PFAS/Darcy PFM’s

4.3 Delivery Schedule of Lab Analysis Data Report(s). Lab analysis reports shall be provided to Jackson Mitchell via email (jnmitchell@usgs.gov) and delivered within 90 days after receipt of the samples by the vendor.

4.4 Packaging/Packing. Preservation, packaging, and packing of the PFM’s shall be in accordance with standard commercial practice, adequate to ensure acceptance by carrier and safe arrival at destination.

4.5 Delivery Point. Delivery of all items shall be made F.O.B. Destination, within consignee’s premises to the address set forth below:

U.S. Geological Survey Washington WSC 934 Broadway Ave.

Suite 300 Tacoma, WA 98402 Attn: Jackson Mitchell