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GW-

WORK PLANS

— fret* Pi"//

CLOSURE PLAN FOR THE COLLECTION SYSTEMS

AT THE DOWELL SCHLUMBERGER INCORPORATED

FACILITY FARMINGTON, NEW MEXICO

March 28, 1994

Submitted To:

New Mexico Oil Conservation District P.O. Box 2088

Santa Fe, New Mexico 87504

Submitted By:

Dowell Schlumberger Incorporated 300 Schlumberger Drive Sugarland, Texas 77478

701 Antler Drive Suite 233 Casper, WY 82601

Prepared By:

TCb] estern

er onsultants.ine.

611 Skyline Road Laramie, Wyoming 82070

1949 Sugarland Drive Suite 134 Sheridan, WY 82801

1901 Energy Court Suite 270 Gillette, WY 82716

esjtern Consultants, inc.

TABLE OF CONTENTS

Page

1.0 PURPOSE 1

2.0 SITE DESCRIPTION 2

3.0 COLLECTION SYSTEMS 4 3.1 Truck Wash Bays and Separator System 4 3.2 Loading Dock and Collection Sump 4

4.0 PROPOSED CLOSURE ACnTVrriES 7 4.1 Wastewater and Sludge 7 4.2 Separators, Collection Sumps, and Loading Dock 9 4.3 Surrounding and Subsoil Excavation 9 4.4 Reclamation 11

LIST OF FIGURES

Figure Page

2- 1 Site Plan 3 3- 1 Truck Washbay and Oil/Water Separator 5 3- 2 Loading Dock and Collection Sump 6

LIST OF TABLES

Tables Page

4- 1 Separator and Sump In-place Analysis, Dowell Schlumberger Incorporated, Farmington, New Mexico 8

TABLE OF CONTENTS (cont.)

LIST OF APPENDICES

Appendix A Laboratory Data Reports

r

1.0 PURPOSE

TArest estern Consultants, inc.

1.0 PURPOSE

This closure plan is for the removal of two oil/water separator tanks, two truck wash

bays with associated collection sumps, and a loading dock and collection sump at the Dowell

Schlumberger Incorporated (Dowell) facility in Farmington, New Mexico.

1

2.0 SITE DESCRIPTION

^Consultants,

2.0 SITE DESCRIPTION

The Dowell facility is located at 3106 Bloomington Highway in Farmington, New

Mexico. A site plan of the facility is shown on Figure 2-1.

The Dowell facility provides services for oil and gas production wells. Services include

well cementing, acidizing/stimulating and formation fracturing.

2

EXPLANATION

FNM-1 MONITORING WELL LOCATION AND IDENTIFICATION

FNM-4 ABANDONED MONITORING WELL (8 /26 /92 )

100 Ft.

SCAL£

FIGURE 2-1 SITE PLAN

DOWELL SCHLUMBERGER FACILITY FARMINGTON, NEW MEXICO

estern ater bnsultants,inc.

3

3.0 COLLECTION SYSTEMS

TArest estern Consultants, m

3.0 COLLECTION SYSTEMS

The following sections detail the collection systems at the Dowell, Farmington facility

which will be closed under this plan.

3.1 Truck Wash Bavs and Separator System

The truck wash bays and oil/water separator system are located in the central portion of

the facility (Figure 3-1). The system is comprised of two former truck wash bays, one inside

the maintenance building and the other just north of the building. Neither bay is in use. The

interior and exterior wash bay collection sumps are still intact and are connected to the separator

tanks by a six-inch drain line (Figure 3-1). The line from the separator to the sanitary sewer

line has been capped.

3.2 Loading Dock and Collection Sumo

The loading dock and collection sump are located in the north central portion of the

facility (Figure 3-2). The collection sump formerly received stormwater and incidental spills

from the former acid plant. The collection sump is surrounded by a concrete pad (Figure 3-2).

The entire acid plant has been out of service since May 1993.

4

-X- -X- -X- -X- -X- -X- •X-

CAPPED UNE

to

OIL/WATER -> SEPARATOR \

r

J MAINTENANCE

INTERIOR TRUCK BUILDING WASH BAY

COLLECTION SUMPS

EXTERIOR TRUCK WASH BAY

ASPHALT PAVEMENT

X

0 L

50 FT. I

-X-SCALE

-X

-FENCE

-X- -X- -X- - X

EXPLANATION - S SANITARY SEWER

X

FIGURE 3-1 TRUCK WASH BAY

AND OIL/WATER SEPARATOR 30WELL SCHLUMBERGER INCORPORATED FACILITY

FARMINGTON. NEW MEXICO

estern ater 'onsultants,inc.

5

° X - X - X - X •X - X -X-

-CAPPED UNE

BARREL-^ STORAGE \ PAD

FORMER-ACID PLANT

O O

LOADING DOCK AND COLLECTION SUMP

WARM ROOM

BULK CEMENT PLANT

WAREHOUSE

0 L

50 FT.

- X

SCALE

X— - X

-FENCE

X X - X

EXPLANATION - S SANITARY SEWER

-X- - X X - - X

_ J l d

< 2

CO < < CL

f BULK SAND

STORAGE SILOS

o o •

o

SC

ALE

o

o

FIGURE 3-2 LOADING DOCK

AND COLLECTION SUMP

30WELL SCHLUMBERGER INCORPORATED FACILITY FARMINGTON, NEW MEXICO

"e stern Ster 'onsultants.me.

6

4.0 PROPOSED CLOSURE ACTIVITIES

^ estern

Consultants, in

4.0 PROPOSED CLOSURE ACTIVITIES

Closure of the two systems will be in accordance with Discharge Plan GW-100 which

was approved by the New Mexico Oil Conservation Division (NMOCD) August 1992. Both the

truck wash bays and separator system as well as the loading dock collection sump will be subject

to the following proposed closure activities.

4.1 Wastewater and Shidge

Composite samples of the wastewater and sludge remaining in the wash bay sumps and

separator tanks system were collected by Western Water Consultants, Inc. (WWC) of Laramie,

Wyoming on September 29,1993. The samples were designated 924-sep-west and 924-sep-east.

Samples were sent to Cenref Laboratories of Brighton, Colorado for analysis by Toxicity

Characteristic Leaching Procedure (TCLP) for volatile organics and metals. Total petroleum

hydrocarbons (TPH), representing the diesel range, were also part of the analysis in anticipation

of disposal requirements. Results of the analysis are illustrated on Table 4-1. The laboratory

reports are contained in Appendix A. All analytical work confirmed that the sump and separator

contents are non-hazardous. The loading dock collection sump is silted in, thus no samples were

collected.

Wastewater in the collection sumps and separator at the time of closure will be evacuated

and disposed at the Southwest Inc. Disposal facility of Blanco, New Mexico. Sludge in the

collection sumps and separator will be evacuated and placed on plastic sheeting within a

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temporary revetment constructed in the northern portion of the facility. This material will be

incorporated with material described in Section 4.3 and characterized for disposal.

4.2 Separators. Collection Sumps, and Loading Dock

Once the wastewater and sludge are removed from the interior wash bay collection sump

the integrity of the sump will be inspected. If no cracks or defects are noted, the sump will be

filled with concrete and considered a "clean closure". If defects are noted, the interior wash

bay sump will be removed and the area excavated similar to the closure activities described

below for the other structures.

Excavation and removal from the ground of the separator and collection sumps will occur

following the removal of the wastewater and sludge. The concrete pads of the exterior truck

wash bay and loading dock will be lifted from the ground surface. The separator and concrete

pieces will be cleaned onsite to remove debris adhering to them. Removed debris will be placed

in the plastic lined temporary revetment. This material, also will be characterized for disposal

by laboratory analysis as stated in the following section. Once clean, the separator tanks will

be demolished. The tank and concrete pieces will be transported and disposed in the local

landfill.

4.3 Surrounding and Subsoil Excavation

After removal of the separator, sumps, and slabs from the ground, the soils underlying

and surrounding the excavations will be field-screened by headspace analysis with an

9

Environmental Instruments 580D Photoionization Detector to detect possible contaminants in the

soil.

If no contaminants are detected in the soil headspace from the samples immediately

beneath and surrounding the excavations, removal of the separator, collection sumps, and slabs

will be considered "clean closure". The excavations will be backfilled with clean fill, imported

from off-site.

If contaminants are detected in the soil headspace from the samples immediately beneath

and/or surrounding the former separator and/or sumps, such soils will be removed. Removal

activities will attempt to remove all contaminated soil but must be limited due to the presence

of nearby structures. Removal activities will be limited to 5 feet surrounding the initial

excavation of the tanks and sumps where possible and no greater than 5 feet below the tanks and

sump bottoms. Less material will be removed if justified by field screening.

Excavated soils will be placed in the plastic lined temporary revetment. One composite

sample will be collected from the soils pile for laboratory analysis to determine appropriate

disposal. The soil sample will be composited from five samples collected from random locations

within the interior of the pile. The composite sample will be analyzed by TCLP for volatile

organic compounds and metals; TPH by modified method 8015 (diesel range).

Effectiveness of the excavations will be confirmed by laboratory analysis of composite

soil samples from each of the excavations. The samples from each excavation will be collected

from a minimum of five separate in-place locations in the excavations. The soil samples will

be analyzed by TCLP for volatile organic compounds and metals; TPH by modified method

10

8015 (diesel range). If no contaminants are detected, the excavations will be considered "clean

closures".

4.4 Reclamation

The excavations will be filled to the surrounding surface by importing clean fill. The fill

will be emplaced in 6-inch lifts and compacted. An asphalt pad will be placed over the area of

the former exterior wash bay and interior wash bay if needed. The loading dock and collection

sump may be replaced as part of the construction of a new acid plant at the facility which will

occur under a separate project. All plans and specifications for a new facility will be submitted

to NMOCD for approval prior to beginning construction.

11

APPENDIX A

LABORATORY DATA REPORTS

w e s t estern Consultants, in

695 North Seventh Street Brighton, Colorado 80601-1559 Telephone 303 659-0497

CenrefLabs Analytical Chemistry Laboratories

November 15, 1993

BEFOKIXNG: INVOICING:

Western Water Consultants 611 Skyline Road Laramie, WY 82070

Western Water Consultants 611 Skyline Road Laramie, WY 82070

Attention: Scott Gustin Attention: Scott Gustin

CENREF PROJECT NUMBER: PR932228A

DATE COMPLETED: November 15, 1993 DATE RECEIVED: October 27, 1993

PROJECT DESCRIPTICN:

2 water samples & 2 sludge samples for Western Water Consultants taken 9/29/93. Project #924.

Enclosed is the laboratory report for the project described above. If you have any questions or if we can be of further assistance, please feel free to contact us. We appreciate your business and look forward to serving you again soon.

Respectfully,

Tracie A. Nance Project Manager

COMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: PR932228A

SAMPLE IDENTTFICAnON

CROSS KKFKKENCE SHEET

CENREF SAMPLE NUMBER rr.TWT SAMPLE IDENriFlCATION SAMPLE DATE

10731A #924-sep-West 9/29/93 10732A #924-sep-East 9/29/93 10733A #924-sep-East-Sludge 9/29/93 10734A #924-sep-West-Sludge 9/29/93

CenrefLabs

FINAL RESULTS

Client : Western Water Consultants Project: PR932228A

COMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: PR932228A CENREF SAMPLE NUMBER: 10731A SAMPLE IDENITFICATION: #924-sep-West DATE SAMPLED: 9/29/93 DATE/TIME ANALYZED: 10/13/93 § 11:36

METHDT) EPA 8240

ANALYSIS CAS NO. SDL RESULT (ug/D

Benzene 71-43-2 10 BDL Carbon Tetrachloride 56-23-5 10 BDL Chlorobenzene 108-90-7 10 BDL Chloroform 67-66-3 10 BDL 1,4-Dichlorobenzene 106-46-7 10 BDL

1,2-Dichloroethane 107-06-2 10 BDL 1,1-Dichloroethene 75-35-4 10 BDL 2-Butanone 78-93-3 50 BDL Tetrachloroethene 127-18-4 10 BDL Trichloroethene 79-01-6 10 BDL

Vinyl Chloride 75-01-4 50 BDL

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS: Sample vpg Hilirtvarf due to a high hydrocarbon content. No TCLP extraction performed because solid content was <0-5*. Analyti*; was reported as total concentration.

CenrefLobs

COMPANY NAME:

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENTIFICATION: DATE SAMPLED: DATE EXTRACTED: DATE/TIME ANALYZED:

Western Water Consultants

FR932228A 10731A #924-sep-West 9/29/93 10/28/93 11/2/93 § 05:55

METflDD Mod. 8015

ANALYSIS SDL RESULT (mg/l) (mg/l)

Total Extractable Hydrocarbons 1 86

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS:

CenrefLob

COMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENTIFICATION: DATE SAMPLED:

PR932228A 10731A #924-sep-West 9/29/93

ANALYSIS EXTRACTED DATE/TIME ANAT.VTFTi METHOD UNITS SDL RESULT

Arsenic 10-06/17:30 10-15/08:36 6010 mg/l 0.2 0.4 Barium 10-06/17:30 10-15/13:47 6010 mg/l 0.020 0.501 Cadmium 10-06/17:30 10-15/10:30 6010 mg/l 0.005 0.086 Chit Milium 10-06/17:30 10-15/02:32 6010 mg/l 0.010 0.358

Lead 10-06/17:30 10-15/01:25 6010 mg/l 0.08 0.21 Mercury 10-11/12:15 10-11/16:00 7470 mg/l 0.0005 BDL Selenium 10-06/17:30 10-15/06:24 6010 mg/l 0.09 BDL S i lver 10-06/17:30 10-15/12:35 6010 mg/l 0.007 BDL

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS: No TCLP extraction performed because solid content was <0.5%. Analysic; was reported as total concentration.

CemefLzcs

COMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: PR932228A CENREF SAMPLE NUMBER: 10732A SAMPLE IDENTIFICATION: #924-sep-East DATE SAMPLED: 9/29/93 DATE/TTME ANALYZED: 10/11/93 @ 17:51

METBDD EPA 8240

ANALYSIS CAS NO. SDL RESULT (ug/l) (ug/l)

Benzene 71-43-2 100 BDL Carbon Tetrachloride 56-23-5 100 BDL Chlorobenzene 108-90-7 100 BDL Chloroform 67-66-3 100 BDL 1,4-Dichlorobenzene 106-46-7 100 BDL

1,2-Dichloroethane 107-06-2 100 BDL 1,1-Dichloroethene 75-35-4 100 BDL 2-Eutanone 78-93-3 500 BDL Tetrachloroethene 127-18-4 100 BDL Trichloroethene 79-01-6 100 BDL

Vinyl Chloride 75-01-4 500 BDL

BDL - Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS: Sample was diluted due to high hydrocarbon content. No TTTP pvt-raction per?™™** hpcause solid content was <0.5%. Analysis was reported as total coricentration.

Cenreflx:

CCMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: PR932228A CENREF SAMPLE NUMBER: 10732A SAMPLE IDENTIFICATION: #924-sep-East DATE SAMPLED: 9/29/93 DATE EXTRACTED: 10/28/93 DATE/TIME ANALYZED: 11/2/93 § 0 9 : 1 5

METHOD Mod. 8015

SDL RESULT (ng/1) (mg/l)

1 84

ANALYSIS

Tota l Extractable Hydrocarbons

BDL = Below Sample Detection l i m i t SDL = Sample Detection L i m i t

COMMENTS:

CemefLobs

COMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENTIFICATION: DATE SAMPLED:

PR932228A 10732A #924-sep-East 9/29/93

ANALYSIS DATE/TIME EXTRACTED

DATE/TIME ANALYZED METHOD UNITS SDL RESULT

Arsenic 10-06/17:30 10-15/08:36 6010 mg/l 0.2 0.5 Barium 10-06/17:30 10-15/13:47 6010 mg/l 0.020 0.682 Cadmium 10-06/17:30 10-15/10:30 6010 mg/l 0.005 0.135 Chromium 10-06/17:30 10-15/02:32 6010 mg/l 0.010 0.623

Lead 10-06/17:30 10-15/01:25 6010 mg/l 0.08 0.23 Mercury 10-11/12:15 10-11/16:00 7470 mg/l 0.0005 BDL Selenium 10-06/17:30 10-15/06:24 6010 mg/l 0.09 BDL S i lver 10-06/17:30 10-15/12:35 6010 mg/l 0.007 BDL

BDL - Below Sample Detection Limit SDL - Sample Detection Limit

COMMENTS: No TCLP extraction performed because solid content was <0.5%. Anaiyg-i<=; was reported as total concentration.

COMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: PR932228A CENREF SAMPLE NUMBER: 10733A SAMPLE IDENTIFICATION: #924-sep-East-Sludge DATE SAMPLED: 9/29/93 DATE/TIME ANALYZED: 11/10/93 § 15:27

ZEE EXTRACTION METHOD EPA 8240

ANALYSIS CAS NO. SDL RESULT (ug/l) (ug/l)

Benzene 71-43-2 10 20 Carbon Tetrachloride 56-23-5 10 BDL Chlorobenzene 108-90-7 10 BDL Chloroform 67-66-3 10 BDL 1,4-Dichlorobenzene 106-46-7 10 BDL

1,2-Dichloroethane 107-06-2 10 BDL 1,1-Dichloroethene 75-35-4 10 BDL 2-Butanone 78-93-3 50 BDL Tetrachloroethene 127-18-4 10 BDL Trichloroethene 79-01-6 10 BDL

Vinyl Chloride 75-01-4 50 BDL

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS:

1 CenrefLzt:

COMPANY NAME:

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENITFTCATION: DATE SAMPLED: DATE EXTRACTED: DATE/TIME ANALYZED:

Western Water Consultants

PR932228A 10733A #924-sep-East-Sludge 9/29/93 10/5/93

10/8/93 § 18:34

METHOD Mod. 8015

ANALYSIS SDL RESULT (rog/1) (mg/l)

Total Extractable Hydrocarbons 1000 45000

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS:

f 'Cenrsfl__ibo

CCMPANY NAME: Western Water consultants

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENTIFICATION: DATE SAMPLED:

PR932228A 10733A #924-sep-East-Sludge 9/29/93

ANALYSIS DATE/TIME EXTRACTED

DATE/TIME ANALYZED METHOD UNITS SDL RESULT

TCLP Extraction Arsenic Barium Cadmium Chromium

10-29/15:15 10-29/15:15 10-29/15:15 10-29/15:15

11-11/17:47 11-11/17:18 11-10/20:49 11-11/16:42

1311 6010 6010 6010 6010

mg/l mg/l mg/l mg/l

0.2 0.020 0.005 0.010

0.2 0.92 0.023 BDL

Lead Mercury Selenium Silver

10- 29/15:15 11- 02/10:15 10-29/15:15 10-29/15:15

11-10/22:52 11-02/13:30 11-11/19:47 11-10/21:38

6010 7470 6010 6010

mg/l mg/l mg/l

0.08 0.0005 0.09 0.007

0.09 BDL BDL BDL

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS:

CenrefLxs

CCMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: PR932228A CENREF SAMPLE NUMBER: 10734A SAMPLE IDENTIFICATION: #924-sep-West-Sludge DATE SAMPLED: 9/29/93 DATE/TIME ANALYZED: 11/10/93 @ 16:08

ZEE ESnQVCTIOM METHOO EPA 8240

ANALYSIS CAS NO. SDL RESULT (ug/l) (ug/l)

Benzene 71-43-2 10 19 Carbon Tetrachloride 56-23-5 10 BDL Chlorobenzene 108-90-7 10 BDL Chloroform 67-66-3 10 BDL 1,4-Dichlorobenzene 106-46-7 10 BDL

1,2-Dichloroethane 107-06-2 10 BDL 1,1-Dichloroethene 75-35-4 10 BDL 2-Butanone 78-93-3 50 BDL Tetrachloroethene 127-18-4 10 BDL Trichloroethene 79-01-6 10 BDL

Vinyl Chloride 75-01-4 50 BDL

BDL = Below Sample Detection Limit SDL - Sample Detection Limit

COMMENTS:

1 CenrefLx:

CCMPANY NAME:

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENTIFICATION: DATE SAMPLED: DATE EXTRACTED: DATE/TIME ANALYZED:

Western Water Consultants

PR93222SA 10734A #924-sep-West-Sludge 9/29/93 10/29/93 11/3/93 § 04:50

METHOD Mod. 8015

ANALYSIS SDL RESULT (mg/l) (mg/l)

Total Extractable Hydrocarbons 1000 25000

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS:

CenrefLxs

CCMPANY NAME: Western Water Consultants

CENREF PROJECT NUMBER: CENREF SAMPLE NUMBER: SAMPLE IDENTIFICATION: DATE SAMPLED:

PR932228A 10734A #924-sep-West-Sludge 9/29/93

DATE/TIME DATE/TIME ANALYSIS EXTRACTED ANALYZED METHOD UNITS SDL RESULT

TCLP Extraction 1311 Arsenic 10-29/15:15 11-11/17:47 6010 mg/l 0.2 BDL Barium 10-29/15:15 11-11/17:18 6010 mg/l 0.020 1.12 Cadmium 10-29/15:15 11-10/20:49 6010 mg/l 0.005 0.019 Chromium 10-29/15:15 11-11/16:42 6010 mg/l 0.010 BDL

Lead 10-29/15:15 11-10/22:52 6010 mg/l 0.08 BDL Mercury 11-02/10:15 11-02/13:30 7470 mg/l 0.0005 BDL Selenium 10-29/15:15 11-11/19:47 6010 mg/l 0.09 BDL S i lver 10-29/15:15 11-10/21:38 6010 mg/l 0.007 BDL

pH 150.1 PH 7

BDL = Below Sample Detection Limit SDL = Sample Detection Limit

COMMENTS:

CenrefLots

CENREF QC DATA PACKAGE

Client : Western Water Consultants Project: PR932228A

Cenref Labs Tota l Extractable Hydrocarbon Spike Recovery Form

P r o j e c t / : PR932228 Matrix: SOIL Sample ID: LAB SPIKES

Compound Amount Added (mg/KG)

Sample Cone.

Spike Cone.

%

Rec. Spike Dup Cone.

%

Rec. RPD

TEH 1000 0 900 90 900 90 0

Comments:

CENREF LABS Method Blank Summary

Pro jec t #:PR932228

Blank # Frac t ion Matrix Compound Name Cone. Found

Units Det. Lim.

PBLK-1 TEH SOIL NO COMPOUNDS DETECTED MG/KG

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CENREF LABS

INORGANIC QUALITY CONTROL DATA SUMMARY

PREPARATION BLANK

PROJECT NO.: PR932228

ANALYTE METHOD NUMBER

CONCENTRATION SDL UNITS MATRIX M

Selenium 6010 BDL 0.09 mg/L TCLP P

kraenic 6010 BDL 0.2 mg/L TCLP P

Cadmium 6010 0.005 0.005 mg/L TCLP P

Chromium 6010 BDL 0.010 mg/L TCLP P

Sil v e r 6010 BDL 0.007 mg/L TCLP P

Barium 6010 BDL 0.020 mg/L TCLP P

Lead 6010 BDL 0.08 mg/L TCLP P

(iercury 7470 BDL 0.0005 mg/L TCLP CV

SDL - Sample Detection Limit

M qualifiers: P - ICP C - Manual Spectrophotometries A - Flame AA T - Titrimetric F - Furnace AA O - Other CV- Cold Vapor

Comments: •

INOC/3

CENREF LABS

INORGANIC QUALITY CONTROL DATA SUMMARY

DUPLICATES / CHECK SAMPLES

PROJECT NO.: PR932228 MATRIX: TCLP

ANALYTE METHOD NUMBER

SAMPLE NUMBER

SAMPLE CONC.

DUPLICATE CONC.

UNITS RPD LCS

% REC. 80-120%

Q

pH 150.1 11004 7.53 7046 units 1

Q qualifiers: * - Duplicate analysis not within control limits. (0-20%)

Comments:

INQC#2

CENREF LABS

INORGANIC QUALITY CONTROL DATA SUMMARY

MATRIX SPIKES / LCS SAMPLES

MATRIX; TCLP PROJECT NO.: PR932228

UNITS: mg/L

ANALYTE METHOD NUMBER

SAMPLE NUMBER

SAMPLE CONC.

SPIKE CONC. ADDED

MS CONC.

MS % REC.

MSD CONC.

MSD % RSC.

RPD LCS

% REC. 80-120

E Q

Selenium 6010 10732 BDL 5.50 4.96 90 4.75 86 4 102

Arsenic 6010 10732 0.5 7.0 8.2 110 7.7 103 6 113

Cadmium 6010 10732 0.135 0.500 0.635 100 0.591 91 7 110

Chromium 6010 10732 0.623 2.00 2.60 99 2.40 89 8 106

S i l v e r 6010 10732 BDL 2.00 1.88 94 1.76 88 6 106

Barium 6010 10732 0.682 5.00 5.49 96 5.22 91 5 108

Lead 6010 10732 0.23 2.00 2.30 104 2.04 90 12 104

Stercury 7470 10731 BDL 0.0010 0.0005 50 0.0005 50 0 100 N

Q q u a l i f i e r s : N - Spiked sample recovery not within control l i m i t s . (75-125%) * - RPD not within control l i m i t s . (0-20%) D - Matrix spikes were diluted out.

Note: For the following a LCS/LCSD are routinely analyzed due to the v a r i a b i l i t y of these i n samples; Water - Ca, Mg, K, Na; Soil - Ca, Mg, K, Na, Al, Fe.

Comments: There appears to be a matrix interference present for mercury which is

i l l u s t r a t e d by the poor but reproducible spike recoveries. INQC/1

CENREF LABS

INORGANIC QUALITY CONTROL DATA SUMMARY

PREPARATION BLANK

PROJECT NO.: PR932228A

ANALYTE METHOD NUMBER

CONCENTRATION SDL UNITS MATRIX M

fVRSENIC 6010 BDL 0.2 mg/L TCLP P

BARIUM 6010 BDL 0.020 mg/L TCLP P

CADMIUM 6010 BDL O.OOS mg/L TCLP P

CHROMIUM 6010 BDL 0.010 mg/L TCLP P

LEAD 6010 BDL 0.08 mg/L TCLP P

MERCURY 7470 BDL 0.0005 mg/L TCLP CV

SELENIUM 6010 BDL 0.09 mg/L TCLP P

SILVER 6010 BDL 0.007 mg/L TCLP P

SDL 3 Sample Detection Limit

M qualifiers: P - ICP C - Manual Spectrophotometry A - Flame AA T - Titrimetric F - Furnace AA O - Other CV- Cold Vapor

Comments: '

INQC#3

CENREF LABS

INORGANIC QUALITY CONTROL DATA SUMMARY

MATRIX SPIKES / LCS SAMPLES

MATRIX: TCLP PROJECT NO.: PR932228A

UNITS: mg/l

ANALYTE METHOD NUMBER

SAMPLE NUMBER

SAMPLE CONC.

SPIKE CONC. ADDED

MS CONC.

MS % REC.

MSD CONC.

MSD % REC.

RPD LCS

% REC. 80-120

E Q

FVRSENIC 6010 11584 BDL 7.0 8.8 126 8.7 124 1 104 N

BARIUM 6010 11584 0.04 5.00 5.80 115 5.96 118 3 107

CADMIUM 6010 11584 BDL 0.500 0.535 107 0.544 109 2 106

CHROMIUM 6010 11584 BDL 2.00 2.09 104 2.05 102 2 104

LEAD 6010 11584 BDL 2.00 1.98 99 1.99 100 1 96

MERCURY 7470 11584 BDL 0.0010 0.0007 70 0.0008 80 13 90 N

SELENIUM 6010 11584 BDL 5.50 5.82 106 5.99 109 3 111

SILVER 6010 11584 0.009 2.00 1.80 90 1.81 90 0 92

Q qualifiers: N - Spiked sample recovery not within control limits. (75-125%) * - RPD not within control limits. (0-20%) D - Matrix spikes were diluted out.

Note: For the following a LCS/LCSD are routinely analyzed due to the variability of these in samples; Water - Ca, Mg, K, Na; Soil - Ca, Mg, K, Na, Al, Fe.

Comments:

INQC#1

• ^ A M O C O

TANK

AMOCO DEHYDRATOR

F N M - 1

BULK CEMENT PLANT

HYDROCHLORIC ACID

WARM ROOM

AMOCO GAS WELL

BULK SANC STORAGE

SILOS

ASPHALT PAVEMENT

F N M - 5 ^ • 4

WAREHOUSE

F N M - 4

FORMER UNDERGROUND

STORAGE TANKS"

FNM-7

FNM-2

V - X X X * .

1

n n j H

Hi f SHOP

i — WASH BAYS

WATER WELL ASPHALT PAVEMENT

FENCE

EXPLANATION

FNM-1 MONITORING WELL LOCATION AND IDENTIFICATION

FNM-4 ABANDONED MONITORING WELL ( 8 / 2 6 / 9 2 )

100 Ft.

SCA-E

FIGURE 2-1 SITE PLAN

DOWELL SCHLUMBERGER FACILITY FARMINGTON. NEW MEXICO

western Yvater

Consultants,in,. j+£\>

7