The Final (100%) Remedial Design document was submitted to USEPA and PADEP on April 11, 2008 and was approved by USEPA/PADEP on May 8, 2008.  The Final Design presents Gould’s proposal on how the Final Remedy will take place, what will be done, and what the Site will look like after the remedy is implemented.  It addresses USEPA and PADEP comments on the Pre-Final (90%) Design, Throop Borough comments on the Preliminary Land Development Plan and initial comments of the PADEP and Lackawanna County Conservation District on the NPDES permit application. Additional comments on the NPDES permit application received after April 11, 2008, were incorporated into the final 100% Design construction document.

This web page provides an overview of the remedial activities as proposed in the Final Design (Click Here for the Overview), information on proposed construction phasing (Click here for Construction Phasing), and a summary of permitting for implementation of the Final Remedy (Click here for Permitting).

NOTE: The 100% Remedial Design document fills two 3” binders and as such is too large a document to put on this web site. The 100% Design document, however, is available for review at the Marjol Community Relations Office at 502 George Street in Throop (please call 570-383-9313 or e-mail Lisa Ayers at layers@advancedgeoservices.com for an appointment) or at the Marjol Battery Site Repository located at the Throop Municipal Building, 436 Sanderson Street in Throop, PA.

OVERVIEW OF REMEDIAL ACTIVITIES AS PROPOSED IN THE PRE-FINAL DESIGN
Implementation of the Final Remedy for the Marjol Battery Site generally includes the following activities:

• Site Preparation;
• Containment Area Construction;
• Waste Excavation and Handling;
• Containment Area Capping;
• Restoration and Water Management;
• Off-Site Verification Sampling; and
• Post-Remediation Maintenance and Monitoring.

Note: Items updated (changed from the 90% Design) in the 100% Design are highlighted in green below.  The 100% Design also contains a revised Community Relations Plan for the Site.  (For information on the revised Community Relations Plan, click here.)

• Establishment of the Support Zone (a “clean” area for office and equipment trailers, etc.), Decontamination Area, and Access Roads - The existing infrastructure will be used as much as possible, but alternate or additional items will be added as needed. Additional office and equipment trailers will be mobilized by the Contractor. An office trailer may also be mobilized by Throop Borough. These trailers will be staged at the existing support zone at the start of work. There will, however, be a point during construction when all trailers will be moved to a second support zone (at the northeast corner of the facility) to allow for excavations at the existing trailer location. The main entrance at Delaware Street will be used, except when excavation and restoration are occurring at the entrance. During the time period when the Delaware Street entrance is being excavated and restored, the existing Woodlawn Street entrance south of the existing trailer area will be used for personal vehicles. Delivery vehicles and trucks will not enter the Site during the time period when the Delaware Street entrance is closed. Deliveries will be sequenced to occur prior to the entrance being closed so that adequate materials are present for work activities to continue. Traffic on Borough roads will be minimized to the extent possible but there will be traffic going into and leaving the Site especially during mobilization, cap construction, and demobilization. The details of road protection will be determined based on Throop Borough requirements.
• Road Protection and Traffic Control - Due to the anticipated traffic required for construction activities, the sewer line at Delaware Street will be protected with steel plates as required by local officials. Coordination with local officials has occurred to plan traffic routes for transport of materials to and from the Site during remedy implementation.
• Security - Gould will provide a 24-hour-per-day site security guard during active construction and demobilization.  In addition, the Contractor will establish procedures to prevent unauthorized entry into the Site and to document all visitors. 
• Installation of Dust Control Measures and Erosion Control Measures - Dust control will be provided by water spray and covering stockpiles at the end of each work day. Air monitoring for dust and lead will be conducted during all phases of soil disturbance to ensure that the surrounding community is protected. (Click here for more information on air monitoring during construction.) Erosion and sediment control measures, consisting primarily of silt fencing, hay bales, silt socks, construction entrances, check dams, gabion mattresses, and temporary diversion channels and berms, will be installed to control sediment in runoff from impacting non-contaminated areas and to control surface water from impacting construction operations.
• Clearing and Grubbing - In select areas of the North Woods where excavation is less than or equal to 12 inches in depth, clearing of vegetation, brush and trees less than 12 inches in diameter will occur to prepare areas for excavations and consolidation. In these select areas, trees 12 inches or greater in diameter will be protected. In all other excavation areas, all vegetation, brush and trees will be cleared. The chipped material from the clearing of these trees is considered clean and will not be placed in the Containment Area. Grubbed materials from within the areas of contamination are assumed to be contaminated and will be disposed of in the Containment Area.
• Fence and Road Removal - Existing fencing and access roads will be removed as needed to construct the Containment Area and to excavate/consolidate contaminated materials.  Road demolition debris from outside the Containment Area footprint will be placed in the Containment Area.  Alternate fencing will be installed as needed during construction to maintain site security. Permanent replacement fencing will be installed at the completion of construction and as needed for long-term site security.
• Well Abandonment and Modification - Some of the monitoring wells that are in the proposed cap area or that will no longer be needed will be filled (abandoned) and some of the existing wells will be made higher so they can be used for long-term monitoring. One new well is being installed to replace an existing well that requires too much extension to be practical.
• Utility Location and Abandonment - Any existing utilities including electric, water, sanitary, storm, telephone and gas which are present in excavation areas or the Containment Area will be located, disconnected and abandoned, or relocated prior to excavation or Containment Area construction.
  Electric, communications, water and sewer service to the existing trailer location will be maintained as long as possible, and terminated immediately prior to excavation in those areas. Electric and communications service will be provided at an alternate trailer location when this happens. Water service will be maintained to the Site as needed for dust control at all times.
• Construction of a new Stormwater Basin - Construction of a new stormwater basin will occur because the old stormwater basin is located in the area of the cap footprint. Once the new basin is constructed, stormwater flow will be diverted to the new basin and the old basin will be removed from service. The following drawing shows the proposed location of the new stormwater basin.  The new basin will discharge into Sulphur Creek just as the current basin does.  During construction, only water running over clean areas will be directed into the new stormwater basin.  Water running over contaminated areas will be directed onto the cap area.  During construction, a skimmer will be used to take water out of the basin and leave sediment behind in the basin. This protects Sulphur Creek and the Lackawanna River while construction is going on. The basin also will have a baffle in it that also helps keep sediment in the basin. Once construction is complete and grass is growing on all disturbed areas, the skimmer and the baffle will be removed.
• Demolition of On-Site Structures - The Drum Storage Area, trailer, and existing stormwater diversion structures will be demolished, and demolition debris will be placed in the Containment Area. The curbing/barriers at the Low-Haz and High-Haz Stockpile perimeters will be demolished concurrently with stockpile removal and placed in the Containment Area or alternatively, they may be decontaminated and reused as necessary.

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Additional Soil Sampling and Excavation Areas

Sediment samples will be collected for total lead analysis from the Lackawanna River quarterly during construction (and after a significant storm event or if there would appear to be a release from a contaminated area) and the first year of post-construction to make sure there are no releases of lead due to soil disturbances during construction activities.  Monitoring of the existing storm water management basin will not be conducted during construction as the basin will be removed from service.