vvEPA
          Groundwater Pump and Treat Systems: Summary of
          Selected Cost and Performance Information at
protection  Superfund-flnanced Sites Fact Sheet and Order Information
       Agency
Introduction

Hazardous waste sites with groundwater contamination
and pump and treat (P&T) systems exist throughout the
nation. At a number of these sites the U.S. EPA and the
associated States fund the operation and maintenance
(O&M) of the P&T systems because financially-viable
responsible parties have not been identified. In a recent
effort to better understand current and future O&M costs
and to launch an effort to optimize these P&T systems,
EPA has prepared a report entitled: Groundwater Pump
and Treat Systems: Summary of Selected Cost and
Performance Information at Superfund-financed
Sites. In the report U.S. EPA

    identifies the 88 "Fund-lead" planned or operating
    pump and treat systems nationwide,

•   presents cost estimates and performance information
    on each system,

•   prioritizes the systems in terms of potential life-
    cycle savings resulting from optimization, and

    selects 20 to receive optimization evaluations.

Categories of Collected Data

The following categories of information were collected
for each of the 88 identified P&T systems, and the
results are summarized in the report:

    Site name, location, and CERCLIS number

    Contact information for the EPA and State site
    managers, and the lead site contractor

•   System status (e.g., design, installed, operational,
    etc.)

   The date the Record of Decision (ROD) and any
    amendments were signed

   Dates when construction of each system was
    completed and when each system became
    operational and functional, and estimated dates for
    transition of the site to the associated State and
   achievement of restoration goals

•   System goal (e.g., containment, restoration, etc.)

   Primary contaminants of concern and the presence
   of non-aqueous phase liquids (NAPL)
                                        Estimated annual O&M costs

                                        Estimated annual costs associated with groundwater
                                        monitoring as well as the number of monitoring
                                        wells sampled and the sampling frequency

                                        Approximate pumping rate and the number of
                                        groundwater extraction wells

                                        Types of treatment processes utilized

                                    •   Control of plume migration and estimated progress
                                        toward groundwater restoration

                                    Selected Findings

                                    The collected information reveals that 67 of the 88
                                    Fund-lead P&T systems are operational and 21 are pre-
                                    operational (i.e., P&T is specified in the ROD but the
                                    system is in the design stage, being installed,  or installed
                                    but not yet operational).

                                    Based on the systems that provided O&M cost
                                    estimates, the total annual  O&M cost for the Fund-lead
                                    P&T systems in 2002 is estimated to be approximately
                                    $38 million, with EPA incurring approximately $32.5
                                    million of the total annual  cost and the States incurring
                                    the remaining $5.5 million. However, over time, these
                                    P&T systems will be transferred to the States, and these
                                    cost estimates suggest that by 2015, the EPA  costs will
                                    fall below $1 million and the State costs will
                                    .collectively rise above $30 million.

                                          Trend of Estimated Annual O&M Costs
                                                of Fund-lead P&T Systems
                                         $40,000,000
                                           5,000,000
                                           3,000,000
                                         $25,000,000
                                         $20,000,000
                                         $15,000,000
                                         $10,000,000
                                          $5,000,000
— * — O&M cost paid by EPA
— • — O&M cost paid by States
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