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Colder Associates Inc. CONSULTING ENGINEERS SDMS DocID 000230857 REMEDIAL DESIGN CONCEPTUAL GROUNDWATER REMEDIATION \ SYSTEM REPORT INDUSTRI-PLEX SITE WOBURN, MASSACHUSETTS Prepared for: Industri-Plex Site Remedial Trust 800 North Linbergh Boulevard St. Louis, Missouri 63167 DISTRIBUTION: 7 Copies - Industri-Plex Site Remedial Trust 2 Copies - U.S. Environmental Protection Agency 1 Copy - Massachusetts Dept. of Environmental Protection 1 Copy - NUS Corporation 1 Copy - STV/Sanders and Thomas 2 Copies - Golder Associates Inc. August 1990 Project No.: 893-6260 GOLDER ASSOCIATES INC. 20000 HORIZON WAY, SUITE 500, MT. LAUREL, NEWJERSEY 08054 TELEPHONE (609) 273 1110 FACSIMILE (609) 273-0778 OFFICES IN UNITED STATES CANADA UNITED KINGDOM SWEDEN ITALY AUSTRAL IA

Colder Associates Inc. · 2019-11-09 · Colder Associates Inc. CONSULTING ENGINEERS August 31, 1990 Project No. 893-6260 United States Environmental Protection Agency, Region I J.F.K

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Colder Associates Inc.CONSULTING ENGINEERS

SDMS DocID 000230857REMEDIAL DESIGN

CONCEPTUAL GROUNDWATER REMEDIATION\ SYSTEM REPORT

INDUSTRI-PLEX SITEWOBURN, MASSACHUSETTS

Prepared for:

Industri-Plex Site Remedial Trust800 North Linbergh BoulevardSt. Louis, Missouri 63167

DISTRIBUTION:

7 Copies - Industri-Plex Site Remedial Trust2 Copies - U.S. Environmental Protection Agency1 Copy - Massachusetts Dept. of Environmental Protection1 Copy - NUS Corporation1 Copy - STV/Sanders and Thomas2 Copies - Golder Associates Inc.

August 1990 Project No.: 893-6260

GOLDER ASSOCIATES INC. • 20000 HORIZON WAY, SUITE 500, MT. LAUREL, NEW JERSEY 08054 • TELEPHONE (609) 273 1110 • FACSIMILE (609) 273-0778

OFFICES IN UNITED STATES • CANADA • UNITED KINGDOM • SWEDEN • ITALY • AUSTRAL IA

Colder Associates Inc.CONSULTING ENGINEERS

August 31, 1990 Project No. 893-6260

United States Environmental Protection Agency, Region IJ.F.K. Federal Building, HRS-CAN-3Boston, Massachusetts 02203-2211

Attn: Marilyn M. Wade, P.E.Remedial Project Manager

RE: INDUSTRI-PLEX SITE REMEDIAL DESIGNCONCEPTUAL GROUNDWATER REMEDIATION SYSTEM REPORT

Dear Ms. Wade:

On behalf of the Industri-Plex Site Remedial Trust, we aresubmitting this Conceptual Groundwater Remediation SystemReport for the Industri-Plex Site in Woburn, Massachusetts.This report is being submitted in accordance with theRemedial Design Work Plan (RDWP) reporting requirements(RDWP Section 4.2.2.10, p. 37).

The conceptual groundwater remediation system for the siteis shown in the attached flow system diagrams and pipingand instrumentation control diagrams prepared by STV/Sanders and Thomas. Groundwater from extraction wells willbe transported to a collection tank for temporary storage,and then transferred to the treatment system at a fixedrate. The extraction well design and anticipatedgroundwater flow rate will not be available untilcompletion of the aquifer testing program being conductedunder Pre Design Investigation (PDI) Task GW-2 . However,the groundwater extraction system will consist of severalproduction wells oriented perpendicular and/or parallel tothe axis of the groundwater plume.

The groundwater treatment system will be sized toaccomodate the flow rate determined from the PDI Task GW-2investigation. The system will be designed to treatgroundwater containing arsenic, cadmium, lead, and zinc,odiferous constituents (H2S and methyl mercaptan) andvolatile organic compounds (e.g., toluene and benzene).After treatment, the concentrations of these subtances inthe discharge water will meet the levels required by theApplicable or Relevant and Appropriate Requirements (ARARs)being developed as part of the remedial design work. TheARARs will be proposed in the 30% design stage submittal.

GOLDER ASSOCIATES INC. • 20000 HORIZON WAY, SUITE 500, MT. LAUREL, NEW JERSEY 08054 • TELEPHONE (609) 273-1110 • FACSIMILE (609) 273-0778

OFFICES IN UNITED STATES • CANADA • UNITED KINGDOM • SWEDEN • ITALY • AUSTRALIA

August 1990__________________-2-_________________893-6260

As shown in the attached figures, the conceptualgroundwater treatment system consists of the followingelements:

1. Water Collection System to collect groundwaterfrom the extraction wells into an equilizationtank;

2. Oxidation System to remove odors;3. Filtration System to remove any precipitates

present after the oxidation process;4. Air Stripping System with carbon absorber beds to

remove volatile organic compounds, such astoluene and benzene in the off-gas;

5. Carbon Adsorption filtering to remove organiccompounds in the water after air stripping;

6. Reagent System to provide reagents at suitableconcentrations in other parts of the plant;

7. Ion Exchange System, if required, to remove heavymetal ions in the groundwater;

8. Backwash Treatment System to regenerate the ionexchange beds and concentrate the metals;

9. Clean Water Disposal System to deliver water tothe recharge basin (subsurface leaching pit) ,and, if necessary because of the effluent flowrate, to a POTW or stream.

The groundwater treatment system will also incorporateelectrical and instrumentation systems, that will bedeveloped as the design proceeds.

The conceptual groundwater remediation system for the sitewill be refined as additional data are obtained from thePDI tasks for Plume Delineation (Task GW-1, Phase 2),Hydrogeologic Characterization for Extraction/RechargeSystem (Task GW-2), and Groundwater Treatability (Task GW-3). If you have any questions, please contact us.

Very truly yours,

COLDER ASSOCIATES INC.

Kenneth R. MoserAssociate

C:62600831cc: J. Naparstek, MDEP

A. Ostrofsky, NUSD. L. Baumgartner, ISRTW. L. Smull, ISRTJ. Marmo, STV/Sanders and Thomas

Colder Associates

PROCESS FLOW SHEETS

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