GROUND WATSB WORK PLAN

FOR THE

ROGERS ROAD MUNICIPAL LANDFILL

SUPERFUND SITE

SUBMITTED BY:

THE CITY OF JACKSONVILLE, ARKANSAS

NOVEMBER 14, 1994

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TABLE OF CONTENTS

INTRODUCTION

1 . 0 Monitoring Wells and Ground Water Analysis

1 . 1 Ground Water Sampling and Analysis

1 . 2 Monitoring Wells

1 . 3 Well Development.

1 . 4 Ground Water Testing

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2 . 1 Site Fencing

2 . 2 Site Access

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This Ground Water Work Plan for the Rogers Road Municipal Landfill Super-fund Site will be executed after the EPA has finished excavation and transportation of contaminated material from the eite. The

purpose of this plan Is to meet the requirements of the statements of

work for the site and provide for operations and maintenance <O&M) of

tha site after remedial action objectives are completed.

The City of Jacksonville will drill three new monitoring wells,

provide site maintenance and security. The Arkansas Department of

Pollution Control and Ecology will perform water well sampling and

analysis and report the results to the EPA. The EPA may modify the

ground water nonltoring phase of this plan depending on the results of

the water analysis.

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The city will Install three new ground water about 500 feet down

gradient of the drum disposal area. The wells will be located at

angles of about 22.5 degrees apart, center around the most probable

direction of ground water flow which ie east'southeast (122. 5

degrees). The wells will be approximately 25 feet deep with screened

Intervals from 15 to 25 feet. Figure l-l shows the proposed location

of the wells which are numbered MWR-Oa, MWR-09 and MWR-10. The new

welle will be installed upon approval of the 5PA, Due to poor drainage

of the site and surrounding area, It may not be possible 10 drill the

wells from December through May. Any significant change to the propoeed drilling site will be coordinated with the EPA. Monitoring

wells will be drilled utilizing hollow stem augers, air rotary with

casing driver, or similar methods designed to prevent the introduction

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of fluids to the drilling process. Monitor well screens will be

installed a minimum of 10 feet below the ground water table.

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The monitoring wells will be cased with 4-inch stainless steel.

A 0.010 Inch screen slot opening will be used. A clean silica eand

pack will extend from total depth to two feet (2ft. ) above the well

screen. A minimum of a two food (2ft. ) bentonite plug will be placed

above the sand pack. A cement/bentonite piup will be place above the

sand pack. A cement/bentonite mixture will be utilized to complete

the remainder of the well. At all well Locations, above ground protective steel casings with locking caps will be installed. The locking

caps shall be inscribed with well identification information. The

protective steel casing shall extend a minimum of two (2 ) feet above

ground surface. Actual hydrogeologlcal conditions encountered will

dictate specific well construction details. Field adjustments made

during well installation will be recorded in the field log book.

Typical monitoring well construction diagram is shown in Figure 1. 2

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Ground water removed during development and pre-saapling purging

will be contained on site until a laboratory analysis is performed.

If test results indicate that the water is below discharge limits

(Maximum Containment Levels or MCLs) , the contained water may be

discharged on the ground surface of the eite. Should laboratory

analysis show that the water is contaminated above MCLs, the water

will be treated to a concentration below MCLs prior to discharge.

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Existing monitoring wells MWR-OI, and MWR-05, and new monitoring

wells MWR-08, MWR-09 and MWR-io will be sampled a ininiaium of once per

year. Although the EPA's Record of Decision calls for 30 years of

ground water aonitoring. The EPA may modify the water testing requirinente based on the results of the first round of testing. If the EPA

determines the site is no longer a potential threat to the ground

water they may terminate ground monitor ing.

If the EPA determines, (based on ground water testing results}

that the ground water poses a potential contamination threat, the City

of Jacksonville will notify adjacent landowners/homeowners.

The Ground Water Sampling and Analysis Plan is found in Appendix

A . The Arkansas Department of Pollution Control and Ecology (ADPC&E)

will conduct ground water sampling and analysis in accordance with the

procedures in the Appendix. ADPC&E will notify EPA and the City of

Jacksonville at least two weeks prior to sampling so the EPA can

collect split samples if desired. ADPC&E will report the results of

the ground water testing to BPA and the City of Jacksonville within 60

days of receiving the final analytical data.

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The site fencing will be inspected at least four times a year by

the city engineer to deterttine the integrity of the fencing. Breaks In

the fencing will be repaired as soon as practical.

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All gates into the site will be locked when personnel are not in

the site. The City of Jacksonville Engineering Department will keep a

set of keys to the site and personnel requiring entrance into the site

must contact the Engineering Department. A log will be maintained by

the Engineering Department of personnel who req-uest entry. The City of

Jacksonville will be the agency responsible for coordinating access to

the site with the property owner.

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The City Engineer will Inspect the site annually to determine if

there is a need to regrade the site. to eliminate any low spots or

depressions that hold water. Essential drainage ditches will be maintained to provide positive drainage off the site. If necessary, clean

fill dirt will be hauled in to fill low spots. Mulch from the city

tub grinder may be used to cover freshly graded areas to help control

erosion,

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