U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Sierra Zinc Mine & Mill - Removal Polrep

EPA Emergency Response

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region X
Subject: POLREP #7
Seasonal Work Shutdown
Sierra Zinc Mine & Mill
WAN001002396
Northport, WA
Latitude: 48.7745000 Longitude: -117.6684000

To:
From: David Rees, On-Scene Coordinator
Date: 12/8/2014
Reporting Period: 11/17/14 - 11/24/14

1. Introduction
  1.1 Background
   
Site Number: 10MC    Contract Number:  
D.O. Number:      Action Memo Date: 8/28/2014
Response Authority: CERCLA    Response Type: Time-Critical
Response Lead: EPA    Incident Category: Removal Action
NPL Status: Non NPL    Operable Unit:
Mobilization Date: 10/13/2014    Start Date: 10/13/2014
Demob Date:      Completion Date:  
CERCLIS ID: WAN001002396    RCRIS ID:
ERNS No.:    State Notification:
FPN#:    Reimbursable Account #:

2. Current Activities
  2.1 Operations Section
   

2.1.1 Narrative

General Activities:

SWPPP controls and BMPs were inspected onsite prior to work each day. Goldfield Mine Road was inspected using an XRF for contamination daily. Goldfield Mine Road tested clean on all days. Approximately 4,500 cubic yards (cyds) of contaminated material north of Harrier Creek Road was removed and placed on the impoundment. Approximately 2,000 cyds of contaminated material south of Harrier Creek Road was removed and placed on the impoundment. Prior to backfill of the Assay Office in the Mill area, five composite XRF samples were collected using a 40 foot grid and one composite sample was sent for laboratory analysis. Approximately 175 cyds of backfill material was placed at the Assay Office. One composite sample was collected of the backfill material and sent for laboratory analysis. Harrier Creek Road was inspected using an XRF daily. On November 20th, a 50-foot portion of Harrier Creek Road tested positive for low level contamination and was capped with clean borrow material to prevent the spread of contaminated material. Situation to be dealt with before site closure. Additional SWPPP controls and BMP were added on-Site in preparation of the completion of the 2014 construction season. Construction equipment was decontaminated prior to transportation off-Site on November 21st. A seasonal end of work shutdown site walk was conducted by EPA, START, RMC, and their contractors on November 24.

Sampling:

Air samples were collected from three locations on November 17th, and November 18th.

Soil conformation samples were collected in at the Assay Office in November 18th and November 20th.

Air and soil conformation samples were sent for lab analysis.
  2.2 Planning Section
    2.2.1 Anticipated Activities

Final site assessment.

Completion of the 2014 construction season.


2.2.1.1 Planned Response Activities

2.2.1.2 Next Steps

Coordinate Site construction recommencing in late spring/early summer 2015.

2.2.2 Issues
  2.3 Logistics Section
    No information available at this time.
  2.4 Finance Section
    No information available at this time.
  2.5 Other Command Staff
    No information available at this time.
3. Participating Entities
  No information available at this time.
4. Personnel On Site
 

On Site Personnel for week ending 11/21/14:

ACI Northwest: 5 employees [2 employees on November 21st]

REMC: 1 employee

EPA: none

START: none

On Site Personnel for week ending 11/19/14

ACI Northwest: 2 employees 

REMC: 1 employee

EPA: 1 OSC

START: 1 

Visitors/Agency Personnel

Patrick Freeman with The Goldfield Corporation arrived on site on November 19th.
5. Definition of Terms
  No information available at this time.
6. Additional sources of information
  No information available at this time.
7. Situational Reference Materials
  No information available at this time.