**Upper ½ Mile Reach Removal Action**

**Pittsfield, Massachusetts**

**Post-Removal Monitoring Activities Summary**

**Table 1**

+-------+--------+--------+---------+------------+--------------------+
| **    | **M    | **Work | **Freq  | **P        | **Requirements**   |
| Categ | edia** | Plan   | uency** | arameter** |                    |
| ory** |        | §**    |         |            |                    |
+-------+--------+--------+---------+------------+--------------------+
| Water | Water  | Sec.   | 3x/year | PCBs,      | Compare to         |
| c     |        | 11.2   | for 5   | Total      | baseline data.     |
| olumn |        |        | years\* | suspended  |                    |
|       |        | (see   |         | solids,    |                    |
|       |        | Note   |         |            |                    |
|       |        | 1)     |         | turbidity, |                    |
|       |        |        |         | te         |                    |
|       |        |        |         | mperature, |                    |
|       |        |        |         | water      |                    |
|       |        |        |         | flow,      |                    |
|       |        |        |         | water      |                    |
|       |        |        |         | depth      |                    |
+-------+--------+--------+---------+------------+--------------------+
| Biota | Caged  | Sec.   | 1 Event | PCBs, %    | Compare to         |
|       | m      | 11.3   |         | Lipids     | baseline data.     |
|       | ussels |        |         |            |                    |
+-------+--------+--------+---------+------------+--------------------+
| Isol  | Se     | Sec.   | 1 and 5 | PCBs,      | Compare to Work    |
| ation | diment | 11.5.1 | years   | Total      | Plan predictions   |
| Layer |        |        | after   | organic    | re PCB migration   |
|       |        |        | place   | carbon     | through isolation  |
|       |        |        | ment.\* |            | layer. If          |
|       |        |        |         |            | migration \>than   |
|       |        |        |         |            | predicted,         |
|       |        |        |         |            | potentially        |
|       |        |        |         |            | perform corrective |
|       |        |        |         |            | action             |
+-------+--------+--------+---------+------------+--------------------+
| Armor | Rip    | Sec.   | 1x/year | Armor      | Repair significant |
| Stone | rap    | 11.5.2 | for 5   | stone      | movement or        |
| Layer | stone  |        | years\* | thickness  | reduction in armor |
|       |        |        |         |            | stone thickness    |
+-------+--------+--------+---------+------------+--------------------+
| Ha    | Bo     | Sec.   | 1x/year | Stability  | Address unstable   |
| bitat | ulders | 11.5.3 | for 5   |            | conditions         |
| E     |        |        | years   |            |                    |
| nhanc |        |        |         |            |                    |
| ement |        |        |         |            |                    |
| Struc |        |        |         |            |                    |
| tures |        |        |         |            |                    |
+-------+--------+--------+---------+------------+--------------------+
|       |        |        |         | Effects on | Document           |
|       |        |        |         | aquatic    | observations in    |
|       |        |        |         | habitat    | report.            |
+-------+--------+--------+---------+------------+--------------------+
|       |        |        |         | Potential  | Repair increased   |
|       |        |        |         | for        | bank erosion, if   |
|       |        |        |         | bank-side  | any.               |
|       |        |        |         | erosion    |                    |
+-------+--------+--------+---------+------------+--------------------+
| Sedi  | Se     | Sec.   | 3       | PCBs       | If PCBs found,     |
| ments | diment | 11.5.4 | rounds  |            | evaluate data to   |
| on    |        |        | (5, 10, |            | determine source.  |
| armor |        |        | and 15  |            | Potentially        |
| stone |        |        | years   |            | perform source     |
|       |        |        | after   |            | control corrective |
|       |        |        | compl   |            | actions.           |
|       |        |        | etion). |            |                    |
+-------+--------+--------+---------+------------+--------------------+
| Res   | Soil   | Sec.   | 2x/year | Erosion    | Repair significant |
| tored |        | 11.6.1 | for     |            | erosion of bank    |
| Bank  |        |        | first   |            | soils. If          |
| Soil  |        |        | year    |            | practical, remove  |
|       |        |        |         |            | eroded material    |
|       |        |        | 1x/year |            | (if contaminated)  |
|       |        |        | for     |            | from the river.    |
|       |        |        | years 2 |            |                    |
|       |        |        | -5\*    |            |                    |
+-------+--------+--------+---------+------------+--------------------+
| Res   | Pl     | Sec.   | 2x/year | Planting   | Survival of \>80%  |
| tored | anting | 11.6.2 | for     | quantity   | of planting        |
| Bank  | inv    |        | years   |            | quantity           |
| Veget | entory |        | 1 - 3   |            |                    |
| ation |        |        |         |            |                    |
|       |        |        | 1x/year |            |                    |
|       |        |        | for     |            |                    |
|       |        |        | years 5 |            |                    |
|       |        |        | and 7   |            |                    |
|       |        |        | (see    |            |                    |
|       |        |        | note 2) |            |                    |
+-------+--------+--------+---------+------------+--------------------+
|       | In     |        |         | Invasive   | Presence of \<5%   |
|       | vasive |        |         | type       | of surface area    |
|       | s      |        |         |            |                    |
|       | pecies |        |         |            |                    |
+-------+--------+--------+---------+------------+--------------------+
|       | Herb   |        |         | \%         | Presence of 100%   |
|       | aceous |        |         | g          | in area outside    |
|       | groun  |        |         | roundcover | foliar area        |
|       | dcover |        |         |            |                    |
+-------+--------+--------+---------+------------+--------------------+
| S     | Groun  | Tec    | Weekly, | NAPL       | In areas of        |
| ource | dwater | hnical | M       | thickness  | barrier, no        |
| Co    |        | Atta   | onthly, |            | discharge of NAPL  |
| ntrol |        | chment | or      | (see Note  | to surface water   |
| Shee  |        | H to   | Qu      | 4)         | or sediments and   |
| tpile |        | the    | arterly |            | no LNAPL migration |
| Ba    |        | Scope  | (see    |            | around barriers.   |
| rrier |        | of     | Note 3) |            | In other areas     |
| Walls |        | Work   |         |            | near surface       |
|       |        | for    |         |            | water, elimination |
|       |        | R      |         |            | of measurable NAPL |
|       |        | emoval |         |            | in wells near bank |
|       |        | A      |         |            | that could         |
|       |        | ctions |         |            | discharge NAPL to  |
|       |        | O      |         |            | surface water.     |
|       |        | utside |         |            |                    |
|       |        | the    |         |            |                    |
|       |        | River  |         |            |                    |
+-------+--------+--------+---------+------------+--------------------+

This monitoring activities summary chart is designed for informing
citizens generally of the Upper ½ Mile Reach monitoring requirements,
and is not intended to alter any term or obligation of the Consent
Decree, or the Upper ½ Mile Reach Removal Action Work Plan. For the
precise Consent Decree requirements, please consult the Consent Decree
(www.epa.gov/ne/ge).

Notes

> \*After five years, GE will propose to EPA, for approval, a long-term
> monitoring program. For the water column sampling, the data will be
> evaluated and, if appropriate, the monitoring program will modified or
> eliminated subject to EPA approval.
>
> 1\. Information presented in table obtained from Upper ½ Mile Reach
> Removal Action Work Plan (Blasland, Bouck and Lee, August 1999).
>
> 2\. Bank vegetation inspection activities to be performed in phases
> dependent upon actual planting date for specific planting area.
>
> 3\. Monitoring frequencies for different source control barrier walls
> will be performed (e.g., weekly, monthly, quarterly) in accordance
> with the Plant Site 1 Groundwater Management Area (GMA 1) baseline
> monitoring plan.
>
> 4\. Monitoring is also required to ensure that dissolved contaminants
> in groundwater are not adversely affecting surface water in accordance
> with the GMA 1 baseline monitoring plan.