Grp_5_QA.pdf

F-35 Fuel Cell Maintenance Facility Renovation – Amendment II & Group II Questions

1) The specification section 01 78 00 referenced in response to Group II question #59 states to “Leave premises broom clean.” This approach will not leave the hangar free of lead dust upon project completion. Is this the intent? Or, is it the intent that the contractor clean all exposed surfaces in the hangar & adjacent spaces in an effort to remove lead dust from the building?

ANSWER: The intent is to have the Contractor clean all exposed surfaces in the hangar and adjacent spaces to remove lead dust from the building.

2) Based on the specification section 02 61 13, soils within areas of land use control measures

(LUC) are to be 100% stockpiled. From the map provided in amendment 2, there is a source area and 200’ buffer for SO504 around Building 1344. The legend specifically calls out a LUC for Site ST019 but not for Site SO504. Is the source area for SO504 the LUC? Is the buffer area around the source area for SO504 the LUC? or does a LUC exist at the site?

ANSWER: The buffer area around S0504 is the LUC. The source has not been delineated;

that is why there is a 200-ft buffer drawn around S0504.

3) There are some conflicts between the Programmatic UFP QAPP and the issued specification section 02 61 13. The specification section mandates use of the UFP QAPP as modified for the project but the project specific modifications are typically not made to Worksheet 14, 15, or

17. For example:

a. For sampling in excavations the specifications State:

After all suspected contaminated material is removed, confirmation samples shall be collected and analyzed for the following contaminants: DRO, GRO, RRO, VOCs, PAHs, RCRA metals (plus antimony,vanadium, zinc, and selenium), pesticides, PCBs, sVOCs, and EDB.[not consistent with UFP QAPP]

For Excavations WS#17 states:

In 100% stockpile areas, samples will be analyzed for contaminants identified in the given area, as indicated by government-provided data. [Not consistent with specification] In areas of potential contamination based on field screening, samples will be analyzed for the full suite of contaminants included in Table 15-1 of this Programmatic Work Plan [Not consistent with specification]

ANSWER: Strike the first sub-paragraph out of specification Section 02 61 13, paragraph 1.2.1 which states the UFP QAPP is to be modified for this project.

Prepare a Work Plan/SAP in accordance with the most current ADEC CSP Field Sampling Guidance as stated in paragraph 1.2 Description of Work.

b. 02 61 13 in Amendment 2 states: All stockpiled soil will need to be sampled, transported offsite, and disposed of in accordance with applicable regulations.”

The UFP QAPP states the following regarding PFOS/PFOA soils (WS#14) Stockpiled and containerized soils will be sampled using ISM, in accordance with ITRC Guidance (2012), as described in Worksheet #17. Characterization of stockpiled and containerized soils delineated as likely to contain RCRA/CERCLA contaminants

(regardless of any other known or potential contaminants) or only POL contaminants will be conducted by the construction contractor, while characterization of stockpiles delineated as likely containing PFOA/PFOS or PFOA/PFOS and POL will be characterized under a separate contract. [not consistent with specification requiring contractor disposal] The contractor conducting the sampling will propose DU(s) from each stockpile for ADEC and EPA concurrence.

ANSWER: Strike the first sub-paragraph out of specification Section 02 61 13, paragraph 1.2.1 which states the UFP QAPP is to be modified for this project.

Prepare a Work Plan/SAP in accordance with the most current ADEC CSP Field Sampling Guidance as stated in paragraph 1.2 Description of Work.

The requirement for this project is for the Contractor to sample and dispose of the contaminated soil in accordance with applicable regulations.

c. Specifications for sampling frequency state: Samples shall be collected in accordance with the most current ADEC CSP Field Sampling Guidance. WS#17 has a significantly different sampling frequency for excavations (UFP QAPP Pages 71 & 72) and stockpiles (73, 74, & 75) and from beneath storage units (75 & 76) than the referenced document provides in Tables 2A and 2B.

ANSWER: Strike the first sub-paragraph out of specification Section 02 61 13, paragraph 1.2.1 which states the UFP QAPP is to be modified for this project.

Prepare a Work Plan/SAP in accordance with the most current ADEC CSP Field Sampling Guidance as stated in paragraph 1.2 Description of Work.

F-35 FUEL CELL MAINTENANCE FACILITY RENOVATION FINAL

FTQW 18-0205

SECTION 02 61 13

EXCAVATION AND HANDLING OF CONTAMINATED MATERIAL

02/10

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D5434 (2012) Field Logging of Subsurface Explorations of Soil and Rock

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1926 Safety and Health Regulations for Construction

40 CFR 302 Designation, Reportable Quantities, and Notification

1.2 DESCRIPTION OF WORK

The work consists of excavation and temporary storage of approximately 60 cubic yards of contaminated material. Approximate locations of contaminated material are shown on the drawings in the Appendices. Site ST020 contains PFOS/PFOA, benzene, toluene, ethylbenzene and xylenes. Site SO504 contains PFOS/PFOA, ethylene chloride, arsenic, cobalt, iron, manganese and molybdenum. Submit a Work Plan (Sampling and Analysis Plan (SAP)) as specified below. Notify the Contracting Officer within 24 hours, and before excavation, if contaminated material is discovered that has not been previously identified or if other discrepancies between data provided and actual field conditions are discovered. Backfill material is available onsite. Ground water elevationsare shown in as-built drawings in the Appendices. Required sampling and chemical analysis shall be conducted in accordance with the most current Alaska Department of Environmental Conservation (ADEC) Division of Spill Prevention and Response Contaminated Sites Program (CSP) Field Sampling Guidance.

1.2.1 Work Plan(SAP)

A programmatic Uniform Federal Policy for Quality Assurance Project Plan (UFP-QAPP) has been developed for the F-35 Beddown program. The Contractor shall amend the programmatic UFP-QAPP as necessary and it shall be used as a SAP for this project. However, the Contractor will be responsible for sampling and disposal of all contaminated soils including soils contaminated with PFOS/PFOA. The F-35 Programmatic QAPP Work Plan is

SECTION 02 61 13 Page 1

1393165118E Cross-Out A programmatic Uniform Federal Policy for Quality Assurance Project Plan (UFP-QAPP) has been developed for the F-35 Beddown program. The Contractor shall amend the programmatic UFP-QAPP as necessary and it shall be used as a SAP for this project. However, the Contractor will be responsible for sampling and disposal of all contaminated soils including soils contaminated with PFOS/PFOA. The F-35 Programmatic QAPP Work Plan is attached to this specification.

Submit a SAP to the Contracting Officer within 60 calendar days prior to delivery of materials or start of work to allow time for Installation Restoration Program Office (AFCEC/CZOP), ADEC CSP and EPA review and approval. No work at the site, with the exception of site inspections and surveys, shall be performed until the SAP is approved by all agencies.

AFCEC/CZOP will review the SAP and will provide comments to the Contracting Officer. The Contractor shall revise the SAP to address the comments and resubmit it for re-review. Upon approval of the SAP AFCEC/CZOP will submit the SAP to ADEC CSP and the U.S. Environmental Protection Agency (EPA) for review. Review comments shall be addressed by the Contractor and the SAP shall be resubmitted to the Contracting Officer for resubmittal to ADEC CSP and the EPA through AFCEC/CZOP. Allow 60 calendar days in the schedule for the Government's review. No adjustment for time or money will be made if resubmittals of the Work Plan are required due to deficiencies in the plan. The SAP shall include the elements listed in the most current ADEC CSP Site Characterization Work Plan and Reporting Guidance for Investigation of Contaminated Sites document. The most current ADEC CSP Field Sampling Guidance document shall be used for developing sampling methodology.

1.2.2 Site Characterization Report (Field Report)

Submit an electronic copy of the Field Report to the Contracting Officer 30 calendar days prior to facility acceptance/work completion. The Field Report shall include the elements listed in the most current ADEC CSP Site Characterization Work Plan and Reporting Guidance for Investigation of Contaminated Sites. The Field Report shall be reviewed and approved by AFCEC/CZOP, ADEC CSP and EPA. The review process will follow the process for review and approval of the SAP.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation.

Submittals not having a "G" designation are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-03 Product Data

SAP; G

Field Report; G

SD-06 Test Reports

Backfill Surveys Confirmation Sampling and Analysis Sampling of Stored Material; G Sampling Liquid; G Compaction

SD-07 Certificates

Waste Manifests; G

ADEC Approved Disposal Facility Weight And/Or Acceptance Ticket For Contaminated Soil; G

SECTION 02 61 13 Page 2

1393165118E Cross-Out attached to this specification

ADEC Approved Disposal Facility Certificate Of Thermal Incineration Or Disposal Of Contaminated Soil; G

ADEC Transport, Treatment, & Disposal Approval Form For Contaminated Media (ATT); G

1.4 REGULATORY REQUIREMENTS

1.4.1 Permits and Licenses

Obtain required federal, state, and local permits for excavation and storage of contaminated material. Permits shall be obtained at no additional cost to the Government. Reference Section 01 57 19 SUPPLEMENTAL TEMPORARY ENVIRONMENTAL CONTROLS for Eielson AFB permit requirements.

1.4.2 Air Emissions

Air emissions shall be monitored and controlled in accordance with Section

01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS.

PART 2 PRODUCTS

2.1 SPILL RESPONSE MATERIALS

Provide appropriate spill response materials including, but not limited to the following: containers, adsorbents, shovels, and personal protective equipment. Spill response materials shall be available at all times when contaminated materials/wastes are being handled or transported. Spill response materials shall be compatible with the type of materials and contaminants being handled. Reference Section 01 57 19 SUPPLEMENTAL TEMPORARY ENVIRONMENTAL CONTROLS for Eielson AFB spill reporting requirements.

2.2 BACKFILL

Backfill shall be placed in accordance with other sections of these specifications, as appropriate. Excavated materials conforming to specification requirements for materials to be used for fills, backfilling, grading or topsoiling, may be utilized provided there are no indications of contamination as defined herein.

Do not use material for backfill until borrow source chemical and physical test results have been submitted and approved.

PART 3 EXECUTION

3.1 SURVEYS

Perform surveys immediately prior to and after excavation of contaminated material to determine the volume of contaminated material removed, and to include in the Site Characterization Report. Include the follwing information:

Date, time, and location (GIS coordinates as listed below) of tests;

Universal Transverse Mercator (UTM) Projection: Transverse Mercator Zone: 6 North Horizontal Datum: WGS

SECTION 02 61 13 Page 3

1984 Spheroid: WGS 1984 False Easting: 500000.000000 False Northing: 0.000000 Central Meridian: 147° West Longitude Latitude of Origin: 0° Latitude Scale Factor: 0.999600 Vertical Datum: NAVD 1988 Linear Unit: 1 Meter

Locations of test points

3.2 EXISTING STRUCTURES AND UTILITIES

No excavation shall be performed until site utilities have been field located. Take the necessary precautions to ensure no damage occurs to existing structures and utilities. Damage to existing structures and utilities resulting from the Contractor's operations shall be repaired at no additional cost to the Government. Utilities encountered that were not previously shown or otherwise located shall not be disturbed without approval from the Contracting Officer.

3.3 CLEARING

Clearing shall be performed to the limits shown on the drawings.

3.4 CONTAMINATED MATERIAL REMOVAL

3.4.1 Excavation

Excavation shall be performed in a manner that will limit spills and the potential for contaminated material to be mixed with uncontaminated material. An excavation log describing visible signs of contamination encountered shall be maintained for each area of excavation. Excavation logs shall be prepared in accordance with ASTM D5434.

Per ADEC guidance, 100% of the soils from areas of known or discovered contamination including land-use control (LUC) boundaries of Installation Restoration Program (IRP) contaminated sites (even with PID screening levels below 20 ppm) must be stockpiled on liners and analytical samples must be collected to determine disposition of soils. Stockpiles should be separated by three screening levels: less than 20 parts per million (ppm) are presumed clean; 100< and >20 ppm are potentially contaminated; and >100 ppm are considered contaminated. Analytes included for testing shall be limited to chemicals of concern (COC) for the site. All stockpiled soil will need to be sampled, transported offsite, and disposed of in accordance with applicable regulations.

3.4.2 Shoring

If workers must enter the excavation, it shall be evaluated, shored, sloped or braced as required by EM 385-1-1 and 29 CFR 1926 section 650.

3.4.3 Dewatering

Surface water shall be diverted to prevent entry into the excavation.

Dewatering shall be limited to that necessary to assure adequate access, a safe excavation, prevent the spread of contamination, and to ensure that compaction requirements can be met. No dewatering shall be performed without prior approval of the Contracting Officer. Dewatering operations

SECTION 02 61 13 Page 4 at sites with known contamination are explicitly prohibited without coordination with the Installation Environmental Office CES/CEI, AFCEC/CZOP and written consent from the EPA Region 10, and ADEC. No exceptions.

Reference Section 01 57 19.01 20 SUPPLEMENTAL TEMPORARY ENVIRONMENTAL

CONTROLS.

3.5 CONFIRMATION SAMPLING AND ANALYSIS

The Contracting Officer or government appointed inspector shall be present to inspect the removal of contaminated material from each site. After all material suspected of being contaminated has been removed, the excavation shall be examined for evidence of contamination. If the excavation appears to be free of contamination, field analysis shall be used to determine the presence of petroleum contamination using Photo Ionization Detector (PID).

Excavation of additional material shall be as directed by the Contracting Officer. After all suspected contaminated material is removed, confirmation samples shall be collected and analyzed for the following contaminants: DRO, GRO, RRO, VOCs, PAHs, RCRA metals (plus antimony, vanadium, zinc, and selenium), pesticides, PCBs, sVOCs, and EDB.

Samples shall be collected at a frequency that conforms with the most current ADEC CSP Field Sampling Guidance document. A minimum of one sample shall be collected from the bottom and each side wall of the excavation.

Based on test results, propose any additional excavation which may be required to remove material which is contaminated above action levels.

Additional excavation shall be subject to approval by the Contracting Officer. Locations of samples shall be marked in the field and documented on the as-built drawings.

3.6 CONTAMINATED AND POTENTIALLY CONTAMINATED MATERIAL STORAGE

Material shall be placed in temporary storage immediately after excavation.

The following paragraphs describe acceptable methods of material storage.

Storage units shall be in good condition and constructed of materials that are compatible with the material or liquid to be stored. If multiple storage units are required, each unit shall be clearly labeled with an identification number and a written log shall be kept to track the source of contaminated material in each temporary storage unit.

3.6.1 Stockpiles

Stockpiles shall be constructed to isolate stored contaminated material from the environment. Stockpiles shall be constructed to include:

a. A chemically resistant geomembrane liner free of holes and other damage. Non-reinforced geomembrane liners shall have a minimum thickness of 20 mils. Scrim reinforced geomembrane liners shall have a minimum weight of 40 lbs/1000 square feet. The ground surface on which the geomembrane is to be placed shall be free of rocks greater than 0.5 inches in diameter and any other object which could damage the membrane.

b. Geomembrane cover free of holes or other damage to prevent precipitation from entering the stockpile. Non-reinforced geomembrane covers shall have a minimum thickness of 10 mils. Scrim reinforced geomembrane covers shall have a minimum weight of 26 lbs/1000 square feet. The cover material shall be extended over the berms and anchored or ballasted to prevent it from being removed or damaged by wind.

c. Berms surrounding the stockpile, a minimum of 12 inches in height.

SECTION 02 61 13 Page 5

Vehicle access points shall also be bermed.

d. The liner system shall be sloped to allow collection of leachate.

Storage and removal of liquid which collects in the stockpile, in accordance with paragraph Liquid Storage.

3.6.2 Roll-Off Units

Roll-off units used to temporarily store contaminated material shall be water tight. A cover shall be placed over the units to prevent precipitation from contacting the stored material. The units shall be located as directed by the Contracting Officer. Liquid which collects inside the units shall be removed and stored in accordance with paragraph Liquid Storage.

3.6.3 Liquid Storage

Liquid collected from excavations and stockpiles shall be temporarily stored in 55 gallon barrels or 250 gallon tanks with secondary containment.

Liquid storage containers shall be water-tight and shall be located as directed by the Contracting Officer.

3.7 SAMPLING

3.7.1 Sampling of Excavated and Stored Material

Samples of excavated and stored material shall be collected in accordance with the most current ADEC CSP Field Sampling Guidance.

3.7.2 Sampling Liquid

Liquid collected from excavations and or storage areas shall be sampled in accordance with the most current ADEC CSP Field Sampling Guidance.

3.7.3 Sampling Beneath Storage Units

Samples from beneath each storage unit shall be collected prior to construction of and after removal of the storage unit. Samples shall be collected in accordance with the most current ADEC CSP Field Sampling Guidance.

Based on test results, soil which has become contaminated above action levels shall be removed at no additional cost to the Government.

Contaminated material which is removed from beneath the storage unit shall be handled in accordance with paragraph Sampling of Excavated and Stored Material. As directed by the Contracting Officer and at no additional cost to the Government, additional sampling and testing shall be performed to verify areas of contamination found beneath stockpiles have been cleaned up to below action levels.

3.8 SPILLS

In the event of a spill or release of a hazardous substance (as designated in 40 CFR 302 ), pollutant, contaminant, or oil (as governed by the Oil Pollution Act (OPA), 33 U.S.C. 2701 et seq.), notify the Contracting Officer immediately and by calling 911 and asking for Eielson Air Force Base Fire Department and to the 354 CES/CEIEC at (907) 377-SPIL. All spills shall be reported and handled in accordance with Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS. Immediate containment actions shall be

SECTION 02 61 13 Page 6 taken to minimize the effect of any spill or leak. Cleanup shall be in accordance with applicable federal, state, and local regulations. As directed by the Contracting Officer, additional sampling and testing shall be performed to verify spills have been cleaned up. Spill cleanup and testing shall be done at no additional cost to the Government.

3.9 BACKFILLING

3.9.1 Confirmation Test Results

Excavations shall be backfilled immediately after all contaminated materials have been removed and confirmation test results have been approved. Backfill shall be placed and compacted to the lines and grades shown on the drawings.

3.10 DISPOSAL REQUIREMENTS

Offsite disposal of contaminated material shall be in accordance with Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS.

-- End of Section --

SECTION 02 61 13 Page 7

Date: June 2018

SHEET 9 - INFORMATION

This atlas shows only an approximate representation of restoration sampling and site locations at this Air Force base. Exact locations should be verified before any digging, drilling or excavation.

Well types include: monitoring, bioventing, piezometer, and injection. Entire Contents Copyright © 2018, United States Air Force .

No portion of this atlas may be photocopied, electronically stored, or reproduced in any manner without the written permission from the United States Air Force.

Institutional Controls

Soil and Groundwater Use Restrictions

Sites CG527, LF003, LF043, PL001, SO503, SO504, SS067, ST019, ST020, ST027

• Development of a site map showing the areas currently and potentially impacted by groundwater contaminants to determine where the controls are to be implemented

• A prohibition on the installation or use of drinking water wells

• A requirement that all monitoring wells are secured with locks to prevent unauthorized access to groundwater

• Any activity that may result in access to contaminated groundwater or affect the movement of contaminated groundwater requires approval by Environmental Flight (CEIE)

• Any activity that may result in the disturbance of any remedial action requires approval by

CEIE

• Any activity that may result in exposure to or removal of contaminated soil requires approval by CEIE. In the event that contaminated soil or groundwater is removed from the source area, it will be disposed of or treated in accordance with applicable state and federal regulations

• A requirement of notice to and approval by ADEC and EPA of any proposal to add to or alter land use controls

• A requirement to notify ADEC and EPA of any proposal to change the existing land use

• Groundwater monitoring is conduced under the SWMP to maintain an accurate definition of the area of contamination

Decision Document Controls

General Document Controls

Sites CG527, PL001, SO503, ST019, SO504

• The installation or use of drinking water wells is restricted

• Secure all monitoring wells with locks to prevent unauthorized access to groundwater

• Any activity that may result in access to contaminated groundwater or affect the movement of contaminated groundwater requires approval by Installation Management (CEIE)

• In the event that contaminated soil or groundwater is removed from the source area, it will be disposed of or treated in accordance with applicable state and federal regulations

• There is a 200 foot buffer boundary on the site until better delineation is defined

In Addition to the General Document Controls

Site LF003

• Place fencing or signage around a landfill to maintain the integrity of the cap and prevent unauthorized access to prevent human intrusion into landfills and drum disposal areas; prevent contact with possible groundwater and soil contamination; and prevent additional dumping

• Prevent human exposure to possible water and soil contamination

Sites ST049, ST027, SS062, LF003, ST020

• Any activity that may result in the disturbance of any remedial action requires approval by the Installation Management (CEIE)

Sites SS062, SS067, ST020

• Surface water use requires approval of Installation Management (CEIE)

Site SS067

• Fishing restrictions are limited to catch and release only

Site ST020

• Notify the regulatory agencies of proposed dewatering activities, and evaluate their potential for impacting areas of groundwater contamination

• Implement ICs to prevent exposure to contaminated groundwater. In the event of base closure, any remaining contaminated source areas will be addressed in accordance with CERCLA Section 120

Base Administrative Controls

General Base Administrative Controls

Sites CG527, LF003. LF043, PL001, SO503, ST027, SO504

• Any activity that may result in the disturbance of soil requires approval by Installation Management (CEIE). Complete Base Civil

Engineering Work Clearance (Form 103) and obtain approval prior to any work at the site.

In Addition to the General Document Controls

Site ST019

• In accordance with the 2008 Land Use Controls Management Plan, monitoring wells need to be secured with locks to prevent unauthorized access to groundwater

Site ST020

• In the event of base closure, any remaining contaminated source areas will be addressed in accordance with CERCLA Section 120

Site SS067

• A base fishing license and briefing are required to fish on Eielson AFB. Residents applying for permits to fish on base are advised not to consume any fish caught and are informed of the PCB contamination

• Signs are installed along the banks of Garrison Slough indicating potential contamination and the requirement to contact Eielson

Natural Resources regarding fishing restrictions

*Plume boundaries are approximated based upon the most current groundwater monitoring results. Plume boundaries shown on the map represent the point at which contaminant concentrations in the groundwater equal their respective cleanup levels. Where multiple contaminant concentrations are present, boundaries represent the furthest areal extent of contamination above cleanup levels. See Table 1a for more information about specific plumes.

**Labels on buildings indicate Building Numbers on the top line and Facility ID on the bottom line.

Legend

Non-Program Monitoring Well Location

Program Monitoring Well Location

Railroad

Fence

Groundwater Control Area

Groundwater Plume - Fuels & Solvents*

Groundwater Plume - Fuels*

Groundwater Plume - Solvents*

3 - Party Historic Source Area

2 - Party Historic Source Area

@A

Groundwater Contour (AMSL feet)

Closed Site

Open Site

LF003

LF003

Above Mean Sea Level

Land Use Control

AMSL

LUC

Building**

7 7

++++ Soil Control Area

Installation Boundary

2 - Party Source Area 200' Buffer

3 - Party Source Area 200' Buffer

Airfield

Demolished Structure

No Applicable Building Number or Facility ID is identified for this structure

N/A

Road

MMRP Source Area

MMRP Source Area 200' Buffer

Military Munitions Response ProgramMMRP

P:

\A

K_ Ei el so n_ A

FB

\G

IS

\M

X D

\1 8E

I_

PB

R \2

8W el lA tla s\

P

BR

_2

8_ Ei el so nW el lA tla s.

m xd t ar na sa

N/A

LOOP ACCESS ROAD

CA

R

G

AI

N R

O

AD

MULL

IN

S

PITS ROAD

NA

1306628

HANG-MW01

UNKNOWN-04

19PS29

19PS27

20M20B

HANG-MW02

PL001MW02

20M19

20PS58

19PS23

B-13

20PS58

WB-1

19PS11

19PS30

19PS13

20MW39

20MW26B

19PS4

19PS33

20MW38

27-1

19PS21

19PS25

20MW29

20MW42

20MW30 20MW43A20MW20

20MW40

19PS12

20PS58C

20MW41

19PS31B

19MW08

19PS5

20M15B

19PS15

19PS2

19PS20

19PS8

20PP58B

19PS26

03M09

20MW31

SS067

SS067

ST019

ST027

ST020(E-8)

ST020(E-7)

ST020(E-9)

LF003

LF043

MULLINS

PIT

ST020(E-9)

Groundwater

ST020(E-8)

Groundwater

LF003

Groundwater

LF003

Soil

ST020(E-9)

Soil

SO503

CG527

SO504

PL001

0 500 1,000 1,500 Feet

Legend

Continued on Sheet 15

Continued on Sheet 6

C on tin ue d on

S he et

C on tin ue d on

S he et

WGS 1984 UTM Zone 6N

Sheet 9 of 37

³ 3 4 5 6

7 8 9 10 11 12

13 14 15 16 17 18 19 20 21

22 23 24 25 26 27 28 29 30 31 32 33

SOURCE AREA LOCATION