Ref: EPR-ER

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

REGION 8 ,

999 18TM STREET - SUITE 500

DENVER, co 80202-2466 SDMS Document ID

http://www.epa.gov/region08 IIIHIHIIIIIIHIIIIWIIIIIIHIIIIIIIII

2038094

FINAL POLLUTION REPORT

Midvale Slag NPL Site (OU1)[Drums]

Midvale, Salt Lake County, Utah

HEADING

Date:

From:

Agency:

Unit:

To:

POLREP No.

Site:

October 23, 2001

Tien Nguyen

EPA

Region VIII - Emergency Response Program

999 18th Street, Suite 300

Denver Colorado 80202

(303)312-6820

Patty Kalla, EPA Headquarters

#2 and Final

Midvale Slag (OU1) [Drums] Site

BACKGROUND

Site Number:

Party Conducting the Action:

Response Authority:

NPL Status:

Action Memorandum Status:

Date Action Started:

Completion Date:

0871

EPA

CERCLA

yes

Approved- 10/01/01

10/02/01

10/19/01

SITE INFORMATION

A. Incident Category

Time-Critical, Fund-Lead, NPL

B. Site Description

1. Site description

The Site is located in Midvale, Utah, approximately 12 miles south of Salt Lake City. See

POLREP #1 For Additional Information.

The Site was divided into two Operable Units (OU). The OU1 consists of the northern portion of

the Site - north of the slag piles and including a mobile home park. The OU2 consists of the slag

piles and smelter complex area. The drums, which are discussed in this POLREP, are located in

the southern portion of OU1.

Printed on Recycled Paper
2. Site evaluation

The Utah Department of Environmental Quality (UDEQ) completed work at OU1 several years

ago and a Remedial Action Report has been signed. Currently remedial investigations and

feasibility studies are occurring at OU2 under the direction of Region VIII EPA Superfund

Remedial (EPR-SR) RPM. As a part of the data completion for the work at OU2, additional

sampling wells were completed on OU1 to update information regarding the ground water plume.

While sampling the wells, EPR-SR found approximately 90 deteriorated drums of well cuttings

and PPE, and three decon pads/pits containing plastic containers and plastic liners. It is

believed that the drums and wastes were adversely left at the Site since July 1991 as a result of

Site Remedial Investigation and Feasibility Study (RI/FS) performed by URS Consultants. The

soil sample results at OU1 indicated that the native soil contaminated with lead (500 ppm),

arsenic (70 ppm) and cadmium (12 ppm). Many of these drums were badly deteriorated.

Since UDEQ did not have the capability or funds to clean up this contamination, EPR-SR

requested assistance from the Region 8 Emergency Response Unit (EPR-ER) in conducting this

cleanup.

3. Description of threat

Lead, arsenic, and cadmium have been identified at the Site as the contaminants of concern.

These are hazardous substances, as defined by Section 104(14) of CERCLA. The direct threat

from deterioration of the drums which contained drill cuttings and PPE is contaminants may be

migrating via surface water and air. Contaminated wind-blown soil could be transported from the

Site into nearby down-gradient yards and homes and into surface water. The Site is located near

a residential area (Winchester Estates) to the north, and the population within a mile of the Site is

estimated at over 22,381. The Site where the drums located is along the banks of the Jordan

River.

IV. RESPONSE INFORMATION

A. Situation

1. Removal actions

See POLREP #1 For Removal Actions To Date (10/5/01).

• On October 9, 2001, ERRS's subcontractor personnel haz-catted the contents of

the unknown oily drum; results indicated that it contained flammable liquid mixed

with solvents and water.

• Sample results from the drums with well cuttings were in line with the levels of

lead, arsenic and cadmium in native soil as previously reported.

• Manifests for waste profiles were prepared by PSC, ERRS sub-contractor. On

October 17, PSC received approval from disposal facilities for disposition of

waste. On October 18, four roll-offs containing well cuttings and PPE/liners were

transported to ECDC Environmental facility in East Carbon, UT; the oily liquid

drum was shipped to Burlington Environmental facility in Kent, Washington for

disposal.

2. Enforcement

Enforcement procedures for the total Midvale Slag NPL Site resulted in negotiated settlements,

and monies from these settlements were placed in a site-specific account (Midvale Slag Special

Account). Details are contained in the Administrative Record File at the Superfund Records

Center for Region VIII EPA, 999 18th Street, Denver, Colorado 80202.
3. State and Local Role

UDEQ was involved in the initial evaluation of the Midvale Slag site and recommended that the

Site be included on the NPL. The State of Utah and local authorities have provided background

data, support, and community assistance throughout previous activities on the Site, and UDEQ

has recently conducted remediation activities at the Site (OU1) under the direction of EPR-SR.

B. Future Plans

A total of four roll-offs are covered and secured with tarps, and the oily drums are staged onsite

awaiting analytical results, waste profiles, and disposal approval at an appropriate disposal

facility.

C. Key Issues

None at this time.

V. COST INFORMATION

Cost to complete this Removal Action will be taken from the Midvale Slag Special Account established with the

monies from negotiated settlements with Responsible Parties at the Midvale Slag NPL Site. Total costs have not

been received at this time but appear ro be less than the budget ceiling of $50,000 which was established in the

Action Memorandum.

VI. DISPOSITION OF WASTE

Well cuttings and PPE/liners were disposed of at ECDC Environmental facility in East Carbon, UT. The

oily liquid drum was incinerated at Burlington Environmental facility in Kent, Washington.