anaconda smelter npl site area operable...

ANACONDA SMELTER NPL SITE

OLD WORKS/EAST ANACONDA DEVELOPMENT

AREA OPERABLE UNIT

Final

Old Works – Industrial Area (IA) Remedial Action Work

Plan/Final Design Report (RAWP/FDR), Volume IV,

Addendum D, Report III

Individual Site Work Plan (ISWP)

Mike’s Sales Parcel

(Lot No. 1 of 6 Lot Minor Subdivision; Plat No.179-A)

Atlantic Richfield Company

September 4, 2015

DS

UNITED STATES ENVIRONMENTAL PROTECTION AGENCYREGION 8, MONTANA OFFICE

FEDERAL BUILDING, 1OW• 5th STREET, SUITE 3200HELENA, MONTANA 59626

Ref: 8M0

August 5, 2015

Mr. Shannon DunlapAtlantic Richfield Company317 Anaconda RoadButte, Montana 59701

Dear Shannon:

EPA, in consultation with DEQ, approves Atlantic Richfield’s Draft Final Old Works —

Industrial Area (IA) Individual Site Work Plan (ISWP)J,r Mike’s Sales Parcel (Lot No. I of 6Minor Subdivision; P/at No. 179-A), dated July 29, 2015. Please provide EPA and DEQ withcopies of the final signed work plan. Please notify EPA oversight personnel prior to initiatingconstruction activities at the site. If you have any questions, please give me a call.

Sincerely,

(cF( :<‘Charles ColemanAnaconda Project Manager

cc: Andy Lensink, ENF-LKatherine Haque-Hausrath, DEQJoel Chavez, DEQGunnar Emilsson, CDMKen Brockman, BORConnie Ternes-Daniels, ADL

AR; Cord Harris, ARJill Kelley, ARJohn Davis, PRRLDuane Logan, PTSKevin Bethke, TREC

Printed on Recycled Paper

ANACONDA SMELTER NPL SITE

OLD WORKS/EAST ANACONDA DEVELOPMENT

AREA OPERABLE UNIT

Final

Old Works – Industrial Area (IA) Remedial Action Work

Plan/Final Design Report (RAWP/FDR), Volume IV,

Addendum D, Report III

Individual Site Work Plan (ISWP)

Mike’s Sales Parcel

(Lot No. 1 of 6 Lot Minor Subdivision; Plat No.179-A)

Prepared for:

Atlantic Richfield Company

317 Anaconda Road

Butte, Montana 59701

Prepared by:

Pioneer Technical Services, Inc.

P.O. Box 3445


September 4, 2015

Old Works IA RAWP/FDR, Volume IV, Addendum D, Report III Page i of ii

Final Mike’s Sales Parcel ISWP

TABLE OF CONTENTS

Page

1.0 INTRODUCTION ...............................................................................................................1 1.1 Purpose and Scope .................................................................................................. 1

2.0 REMEDIAL ACTION OBJECTIVES AND REQUIREMENTS .......................................2

3.0 SITE CHARACTERIZATION ............................................................................................3 3.1 Previous OW/EADA OU Investigations ................................................................ 3

3.1.1 OW/EADA Industrial Area......................................................................... 3 3.1.2 Mike’s Sales Parcel ..................................................................................... 3

3.1.2.1 Soil Sampling Data .................................................................... 4 3.1.2.2 Groundwater Sampling Data ...................................................... 4

4.0 SELECTED REMEDIAL ACTION ....................................................................................5 4.1 Site Grading ............................................................................................................ 5

4.2 Engineered Cover.................................................................................................... 6 4.3 Groundwater ........................................................................................................... 6

5.0 REMEDIAL ACTION IMPLEMENTATION ....................................................................7 5.1 Construction ............................................................................................................ 7

5.1.1 Air Monitoring ............................................................................................ 7

5.1.2 Dust Control ................................................................................................ 8

5.1.3 Reporting and Record Keeping ................................................................... 8 5.1.4 Schedule ...................................................................................................... 8

6.0 POST-REMEDIAL ACTION ..............................................................................................8

6.1 Property Maintenance ............................................................................................. 9 6.2 Property Development ............................................................................................ 9

7.0 REFERENCES ..................................................................................................................11

Old Works IA RAWP/FDR, Volume IV, Addendum D, Report III Page ii of ii


LIST OF FIGURES

Figure 1 Mike’s Sales Parcel Site Plan

LIST OF TABLES

Page

Table 1 Soil Sampling Data ..................................................................................................4

Table 2 Groundwater Sampling Data................................................................................... 5

LIST OF APPENDICES

Appendix A Construction Drawings

Appendix B Technical Specifications

REVISION SUMMARY

Revision

No.

Author Version Description Date

Rev 0 Duane Logan Draft Issued for Atlantic Richfield

Review 8/4/2008

Rev 1 Duane Logan Draft

Final Issued for Agency Approval 8/29/2008

Rev 1 Charlie

Coleman

Draft

Final Issued Agency Approval 3/22/2010

Rev 2 Nicole

Hockaday

Draft

Final Issued for Agency Approval 7/29/2015

Rev 3 Nicole

Hockaday Final Issued as Final 9/4/2015

Old Works IA RAWP/FDR, Volume IV, Addendum D, Report III Page 1 of 12


1.0 INTRODUCTION

1.1 Purpose and Scope

This Individual Site Work Plan (ISWP) for the Old Works/East Anaconda Development Area

(OW/EADA) Operable Unit (OU) Industrial Area (IA) evaluates current and future

commercial/industrial properties within the OW/EADA OU. The following tasks were

completed on non-characterized commercial/industrial areas:

Existing data were evaluated;

Visual observations were completed for the site;

Additional data collected; and

Developed and discussed the work plan with affected landowners or received written

documentation from the U.S. Environmental Protection Agency (EPA) that the landowner’s

property is below the level of concern for the specified land use.

This ISWP describes the procedures to be used to assure that the remedy meets the performance

standards during construction and is in compliance with the OW/EADA OU Unilateral

Administrative Order (UAO) EPA Docket No. Comprehensive Environmental Response,

Compensation, and Liability Act (CERCLA) VIII-94-08 (EPA, 1994a). This ISWP also

summarizes the Remedial Action Objectives (RAOs), reviews current and previous

investigations, and summarizes results of the above tasks for the Mike’s Sales Parcel. Analyses

of surrounding media such as groundwater and surface water are not included in this ISWP and

will be addressed under the Anaconda Regional Water, Waste and Soils Operable Unit

(ARWW&S OU).

Several current and future (some properties are not developed) commercial and open space

properties exist within the OW/EADA OU. This ISWP is limited to the Mike’s Sales Parcel

currently under Janet Kittleson’s ownership, and is within the boundaries of the OW/EADA OU

IA (Figure 1). The final design for the IA, as described in the Final Old Works –Industrial Area

Remedial Action Work Plan/Final Design Report (RAWP/FDR) Volume IV Addendum D, Report

I – Industrial Area (Atlantic Richfield Company, 2002), has been provided to and approved by

the EPA in consultation with the Montana Department of Environmental Quality (DEQ). This

ISWP is based upon the design approved in the Final Old Works –Industrial Area Remedial

Action Work Plan/Final Design Report (IA RAWP/FDR) Volume IV, Addendum D, Report I –

Industrial Area (Atlantic Richfield Company, 2002).

All RA construction activities within the OW/EADA OU will be performed in accordance with

the applicable historic preservation, the Site-Specific Health and Safety Plan (SSHSP), and

environmental monitoring requirements.



2.0 REMEDIAL ACTION OBJECTIVES AND REQUIREMENTS

The objectives of the OW/EADA remedy, as outlined in the Old Works/East Anaconda

Development Area Operable Unit (OW/EADA) Record of Decision (OW/EADA ROD) (EPA,

1994b), specifically for the OW/EADA IA, are to achieve the following:

“Reduction of risk to human health through:

- Reduction of surface soil arsenic concentrations to acceptable levels, and

- Prevention of direct human contact with waste materials exceeding unacceptable levels.

Reduction of risk to the environment through:

- Minimization of infiltration and deep percolation of metal-laden pore water to ground

water, and

- Minimization of erosion and metal loading via transport of waste and contaminated soil

to Warm Springs Creek.

Preservation, to the extent practical, of historic features at the site.”

Major components of the IA remedy include the following requirements as outlined in the

OW/EADA ROD (EPA, 1994b):

“Construct engineered covers over waste materials in recreational and potential

commercial/industrial areas exceeding arsenic levels of 1,000 parts per million (ppm);

Cover or treat soils exceeding arsenic levels of 500 ppm in current commercial/industrial

areas;

Provide for future remediation of potential residential or commercial/industrial areas, at the

time of development, to the appropriate arsenic action levels through the Anaconda-Deer

Lodge County (ADL) Development Permit System (DPS);

Construct surface controls to manage surface water runoff from Stuckey Ridge, Smelter Hill,

and throughout the site to minimize discharge into Warm Springs Creek;

Implement institutional controls to protect the above engineering controls and manage future

land and water use;

Implement long-term monitoring; and

Preserve, to the extent practicable, historic features in the Old Works Historic District.”



3.0 SITE CHARACTERIZATION

3.1 Previous OW/EADA OU Investigations

Several investigations have been completed at the OW/EADA OU. Previous investigations

include the Old Works Engineering Evaluation/Cost Analysis (EE/CA) (PTI, 1989); the

OW/EADA Remedial Investigation/Feasibility Study (RI/FS) (ARCO, 1993); the OW/EADA

Remedial Design/Remedial Action (RD/RA) Data Summary Report (DSR) (ARCO, 1995); and

the OW/EADA Draft Final Industrial Area – Subarea 3 Data Summary Report Addendum #3

(AERL, 2001). In addition, several field visits, additional data collection, and observation of the

extent of waste material to the proximity of commercial/industrial properties have also been

completed in this area. Additional field reconnaissance and survey were completed in 2014 to

better map the parcel topography. This ISWP will only discuss the investigation results within

the area specified on Figure 1.

3.1.1 OW/EADA Industrial Area

The OW/EADA Remedial Investigation/Feasibility Study (RI/FS) (ARCO, 1993) generally

indicates that soils within the OW/EADA IA contain elevated levels of arsenic and other metals

and that the elevated levels of arsenic and other metals are primarily contained within the top 2

inches of the surface. Subsurface soils (2 to 24 inches) show a significant decrease of all metals

as compared to surface soils. The geometric mean for arsenic in the surface soils ranges from

678 parts per million (ppm) to 82 ppm, with the lower values coming from areas previously

reclaimed in Subarea 5 (East Anaconda Yards).

Additional investigations were conducted within the OW/EADA IA in 1994 through 2001 under

the OW/EADA Remedial Design (RD)/RA to verify the extent of waste materials and to

delineate areas exceeding the current land use action levels. Results of these investigations were

provided in the OW/EADA Remedial Design/Remedial Action (RD/RA) Data Summary Report

(DSR) (ARCO, 1995) and the OW/EADA Draft Final Industrial Area – Subarea 3 Data

Summary Report Addendum #3 (AERL, 2001).

3.1.2 Mike’s Sales Parcel

The Mike’s Sales Parcel (Lot No. 1 of 6 Lot Minor Subdivision; Plat No.179-A) is located east

of the Town Pump Road as shown on Figure 1. The property encompasses approximately 1.0

acre and is currently used as a U-Haul Rental Car and retail business. One building is located on

the north half of the site. The site is serviced by a groundwater well, an underground sewer line,

an overhead power supply line, and a telephone line. Sampling investigations have been

performed on the site in order to characterize the presence and extent of waste materials. These

investigations are described in the following subsections and sampling locations are shown on

Figure 1.



3.1.2.1 Soil Sampling Data

During the 1998 and 2000 OW/EADA OU sampling events, a total of 5 test pits were excavated

to characterize the presence and extent of waste materials within the parcel. Soil samples were

collected from the test pits for analysis of arsenic. One soil sample was collected from the 0 to

2-inch interval and the 4 remaining test pits were sampled for the 0 to 2-inch interval, 2 to 10-

inch interval, and 10 to 18-inch interval. Sampling results indicate that arsenic concentrations

exceeding the commercial/industrial land use action level of 500 milligrams per kilogram

(mg/kg) or parts per million (ppm) exist to a depth of 18 inches on the northwest corner of the

parcel. Figure 1 shows the Mike’s Sales Parcel sampling locations and Table 1 shows the results

of sampling.

TABLE 1: SOIL SAMPLING DATA

SAMPLE ID DEPTH ARSENIC (ppm)

A-02 0-2” 291.0

OWIA0003023-001 0-2” 1,120.0

OWIA0003023-002 2-10” 119.0

OWIA0003023-003 10-18” 48.0

OWIA0003024-001 0-2” 227.0

OWIA0003024-002 2-10” 507.0

OWIA0003024-003 10-18” 254.0

OWIA0003025-001 0-2” 1,010.0

OWIA0003025-002 2-10” 301.0

OWIA0003025-003 10-18” 52.2

OWIA0003026-001 0-2” 1,220.0

OWIA0003026-002 2-10” 1,250.0

OWIA0003026-003 10-18” 1,230.0

OWIA0003026-004* 0-2” 1,250.0 (ppm)-parts per million * = Duplicate Sample

3.1.2.2 Groundwater Sampling Data

One well currently exists on the Mike’s Sales Parcel and groundwater extracted from the well

has been sampled by the Atlantic Richfield Company (Atlantic Richfield) and the Montana

Bureau of Mines and Geology (MBMG). All samples were analyzed for arsenic, cadmium,

copper, lead, and zinc. The well sample results (Table 2) met Federal and State Drinking Water

Standards as outlined in the Anaconda Regional Water Waste & Soils (ARWW&S) Record of

Decision (ARWW&S ROD) (EPA, 1998) and subsequent Anaconda Regional Water Waste &

Soils (ARWW&S) ROD Amendment (ARWW&S ROD Amendment) (EPA, 2011).



TABLE 2: GROUNDWATER SAMPLING DATA

Sample ID Arsenic

(µg/L)

Cadmium

(µg/L)

Copper

(µg/L)

Lead

(µg/L)

Zinc

(µg/L)

Sampled By

DW-ANA-04 2.2B 0.1U 1.3U 1.0U 5.3U Atlantic Richfield

DW-ANA-04 2.7B 0.1U 7.6B 1.0U 15.3B Atlantic Richfield

DW-ANA-04 2.4B 0.4U 7.7B NA 7.0U Atlantic Richfield



204054 2.29 <0.250 U 2.470 J <0.150 U <0.130 U MBMG

207362 2.24 <0.100 U 2.53 <0.060 U 3.88 MBMG

204053 2.05 <0.100 U 2.84 <0.060 U 0.790 J MBMG

200263 2.16 <0.500 U 4.78 0.060 J <1.000 U MBMG

200264 2.22 <2.000 U 30.72 1.140 J 17.81 MBMG

2010Q0041 1.8 <0.08 6.18 <0.27 <1.16 MBMG (µg/L) – micrograms/Liter

Atlantic Richfield Data:

B - Value below the Instrument Detection Limit U – Results between the Instrument Detection Limit and Contract Required Detection Limit

MBMG Data:

J – Detected above Method Detection Limit but less than Method Reporting Limit U – Analyzed for but not detected above Method Detection Limit

4.0 SELECTED REMEDIAL ACTION

The area of the Mike’s Sales Parcel that requires RA under this ISWP is shown on Figure 1. All

future actions will be implemented through the Anaconda-Deer Lodge County (ADLC)

Development Permit System (DPS) (ADLC, 1992). Based on review of the data and the

ARWW&S OU ROD (EPA, 1998), this property is situated on a source of waste material and is

located within the Old Works Waste Management Area (WMA). Atlantic Richfield and the EPA

reviewed and evaluated several RA alternatives for this property as described in the Final Old

Works –Industrial Area Remedial Action Work Plan/Final Design Report (RAWP/FDR) Volume

IV, Addendum D, Report I – Industrial Area (Atlantic Richfield Company, 2002). These RA

alternatives are outlined in the following subsections.

The preferred design for waste materials within a WMA is an Engineered Cover. The remedial

requirements of the Engineered Cover design for this property include: 1) providing an effective

barrier to human contact; 2) minimizing erosion; 3) minimizing infiltration; and 4) being

compatible/durable for the anticipated land uses.

4.1 Site Grading

Site grading will be completed prior to installing Engineered Cover to minimize surface water

ponding and promote surface water drainage away from the parcel. The southern half of the

parcel will be graded to promote surface water drainage in a southeastern direction towards the

existing Montana Highway 1 right-of-way ditch, and the northwest portion of the parcel will be

graded to promote drainage into the existing ditch that runs parallel to the Town Pump Road.



The remaining northeast portion will be graded to drain into the proposed eastern swale located

along the eastern boundary of the McDowell Parcel, which eventually flows into the existing

KANA Discharge Pipeline storm water system. Any remaining low spots that will create areas

of ponding water (infiltration) during a storm event will be filled and/or graded to promote

drainage prior to installing the Engineered Cover.

4.2 Engineered Cover

In order to meet the RA requirements, a 6-inch Type B1 gravel cover will be placed over the

existing subgrade of the entire Mike’s Sales Parcel. The Type B1 gravel cover will consist of a

1-inch minus road mix material and will be compacted to provide a durable working surface for

the anticipated future land use. The 6-inch gravel cover has been designed to provide a

permanent commercial/industrial cover over the property and will: 1) prevent direct human

contact with waste materials exceeding unacceptable arsenic concentrations; 2) minimize infiltration

to underlying waste materials; and 3) provide a durable working surface for the anticipated land use.

The effectiveness of the compacted Type B1 gravel cover to reduce infiltration is largely

dependent on the property’s ability to drain storm water.

The northeast portion of the lot will consist of a 6-inch removal and backfill of 6 inches of gravel

cover in the sandbox area, and a 6-inch removal and backfill with Type A Material and sod. The

sandbox is located at the northeast corner of the lot and will be removed prior to RA activities.

This area will be over excavated and 6 inches of gravel cover will be installed prior to replacing

the sandbox. An area in the northeast portion of the lot adjacent to the existing building will be

excavated in anticipation of a building addition. The remaining northeast portion of the lot will

be over excavated, and 6 inches of Type A Material followed by sod will be installed. These

areas will be graded to promote surface water drainage away from the existing building.

The existing asphalt pad located along the southern portion of the existing building will be

removed and replaced over the regraded surface. The existing fence located on the northern

property line of the Mike’s Sales parcel will be removed and replaced with an 8-foot chain link

privacy fence. Lastly, during site grading activities, earthen ramps will be built near the garage

area located in the northern portion of the existing building to allow garage access. Lot details

described above are provided on the Construction Drawings (Appendix A).

4.3 Groundwater

A well is currently in place on the Mike’s Sales Parcel and water samples have been collected by

Atlantic Richfield and the MBMG. All samples were analyzed for arsenic, cadmium, copper,

lead, and zinc and meet federal drinking water standards. The well sample results (Table 2) are

also below the drinking water standards as outlined in the ARWW&S ROD (EPA, 1998) and

subsequent ARWW&S ROD Amendment (EPA, 2011).

The existing Mike’s Sales Parcel well was previously monitored under the Anaconda Regional

Water Waste & Soils (ARWW&S) Short-Term Ground Water Monitoring Sampling and Analysis

Plan (AERL, 2000) and the modified ARWW&S OU Short-Term Groundwater Monitoring

Sampling and Analysis Plan (SAP) Addendum No. 1 (Atlantic Richfield Company, 2009). The

existing well will now be consistently monitored with the current Anaconda Regional Water



Waste & Soils (ARWW&S) Draft Final Domestic Well Monitoring Program Quality Assurance

Project Plan (QAPP) (Atlantic Richfield Company, 2015), as appropriate. In the event that

water quality standard exceedances are detected and verified from the existing well, the

Domestic Well Reverse-Osmosis (RO) Installation Program will be implemented as detailed in

Section 3.1.1 of the Draft Final Domestic Well Monitoring Program Quality Assurance Project

Plan (QAPP) (Atlantic Richfield Company, 2015). This QAPP was developed in 2015 to follow

ARWW&S domestic well monitoring activities outlined in the Draft Anaconda Smelter NPL Site

Domestic Well Monitoring Plan (CDM, 2015).

Because the Mike’s Sales Parcel well is located within a WMA and is in close proximity to a

municipal water supply, a contingent remedy for the Mike’s Sales Parcel will include connecting

the user to the municipal water supply for potable water purposes and using deed restrictions

limiting the existing well usage to commercial/industrial purposes only.

5.0 REMEDIAL ACTION IMPLEMENTATION

Implementing the RA involves the initial construction of the Type B1 gravel cover,

corresponding site grading, and landowner maintenance of the Type B1 gravel cover. The details

and responsibilities associated with each of these tasks are outlined in the following subsections.

5.1 Construction

Construction of the Type B1 gravel cover and corresponding site grading work will be the

responsibility of Atlantic Richfield and its contractors. Work will be performed in accordance

with the Final Old Works –Industrial Area Remedial Action Work Plan/Final Design Report

(RAWP/FDR) Volume IV, Addendum D, Report I – Industrial Area (Atlantic Richfield Company,

2002) Technical Specifications provided in Appendix B. Prior to construction, the property

owner will be responsible for moving all equipment, materials, or movable structures in order to

facilitate construction of the Type B1 gravel cover. Approximately 600 cubic yards (cy) of Type

B1 gravel material will be hauled to the property to construct the Type B1 gravel cover. An

additional 30 cy of Type B1 material will be hauled to the property and stockpiled for future

maintenance of the cover, which is discussed in Section 6.1. Excess spoils material, if any, as a

result of grading operations, will be transported to the Smelter Hill Repository Complex by

Atlantic Richfield and its contractors. The asphalt will be disposed of at an approved location.

5.1.1 Air Monitoring

Based on local experience and data collected at other sites in the area, as well as within the

OW/EADA OU site boundary, exposure levels to Constituents of Concern (COCs) during

construction will be significantly below any health-based action levels. Personnel air monitoring

is the responsibility of individual Atlantic Richfield contractors. Site and perimeter air

monitoring may be periodically conducted during construction by Atlantic Richfield, using Mini

Ram to confirm the adequacy of dust control measures.



5.1.2 Dust Control

Fugitive dust emissions will be controlled during RA construction activities. If the air emissions

from the RA construction exceed performance standards, operations will cease or be modified

until dust control measures are implemented that achieve compliance with these limits. Dust

control measures will consist of applying water, or water with a wetting agent additive during

RA.

5.1.3 Reporting and Record Keeping

In accordance with the OW/EADA Remedial Action Work Plan/Final Design Report

(RAWP/FDR) Volume I (ARCO, 1994), the contractor will record the following information on a

daily basis:

1. Accidents;

2. Product delivery and usage;

3. Quality Assurance/Quality Control (QA/QC) on required products; and

4. Laboratory analytical tests performed and results.

The QA/QC Oversight Engineer will record the following information on a daily basis:

1. Field observations; and

2. Geotechnical and geochemical test frequencies and results.

Atlantic Richfield will submit a monthly report of construction activities during performance of

the RA.

At completion of all OW/EADA RA activities, a Remedial Action Completion Report (RACR)

will be submitted to the Agencies and the landowner as outlined in the UAO (EPA, 1994a).

5.1.4 Schedule

Remedial action activities associated with the performance of this ISWP may commence in late

summer of 2015, pending Agency and landowner agreement with this ISWP.

6.0 POST-REMEDIAL ACTION

Post-RA involves the maintenance of the cover. A summary of the post-RA tasks and

responsibilities associated with each is outlined in the following subsections. It is anticipated that

post-RA maintenance is consistent with and will be conducted in accordance with the Anaconda

Smelter National Priorities List (NPL) Site Final Engineered Controls Inspection and

Maintenance (I&M) Plan Revision 1 (Atlantic Richfield Company, 2013), and will be attached to

the forthcoming ARWW&S OU Site-Wide Monitoring and Maintenance (M&M) Plan.



6.1 Property Maintenance

Upon completion of RA construction activities by Atlantic Richfield and its contractors, it is the

responsibility of Atlantic Richfield to ensure that maintenance activities are implemented in

accordance with approved plans. Through a Landowner Agreement between Atlantic Richfield

and the landowner, the landowner will be responsible for maintaining the Type B1 gravel cover

in accordance with the approved maintenance plan, so as to minimize erosion or degradation of

the cover.

The Type B1 gravel cover must be inspected semi-annually and any damage or noticeably thin

areas will be repaired by the landowner. Covered areas disturbed by excavation to install

utilities, etc., must have a minimum of 6 inches of compacted gravel reinstalled. Atlantic

Richfield is responsible for providing materials for maintaining the Type B1 gravel cover. The

Type B1 gravel material used in construction and maintenance of the Type B1 gravel cover was

processed specifically for the OW/EADA IA RA. The material is designed to bind in a tight

matrix to minimize infiltration. This material is different than standard road mix or base course

material, which is designed to allow water to drain through the material. To help facilitate future

cap maintenance, 30 cy of gravel material will be available to the landowner and stockpiled at an

on-site location following construction. This amount of material makes up 5% of the total Type

B1 gravel cover volume and has been considered to be an adequate amount for general

maintenance purposes. Atlantic Richfield is responsible for providing additional Type B1 gravel

material in the future, if necessary. This material will be used by the landowners to repair

damages to the Type B1 gravel cover where: 1) the cover wears to a depth less than 6 inches; 2)

the cover has become loose or unsealed on the surface; or 3) depressions have developed in the

cover creating areas of ponded water. Any thin patches made in the Type B1 gravel cover

should be sufficiently compacted under normal vehicle traffic. Waste material encountered

during maintenance activities will be disposed of by the landowner and/or developer in the

ADLC Waste Repository (B2.12 Sub-Cell/Opportunity Ponds).

6.2 Property Development

Future development of the property must comply with the Anaconda-Deer Lodge County (ADLC)

Development Permit System (DPS) (ADLC, 1992) and other applicable federal, state, and local

laws and is the responsibility of the landowner/developer and/or subsequent landowners, as well

as ADLC, in implementing and enforcing the Anaconda-Deer Lodge County (ADLC)

Development Permit System (DPS) (ADLC, 1992). The developer/landowner of WMA properties

is or will be required to: (a) maintain or develop the property consistent with the approved land

use; (b) develop the property in a protective manner; (c) maintain the property and structures

intended for development; and (d) not interfere with Superfund structures associated with the

remedy and associated maintenance. Some of these properties have the potential for

redevelopment, which developments will be required to be consistent with certain restrictions,

such as that the cover remain protective (or wastes removed) for the new land use. The

developer/landowner, prior to development, must apply for a building permit in accordance with

the Anaconda-Deer Lodge County (ADLC) Development Permit System (DPS) (ADLC, 1992) and

allow for property inspection by the ADLC building inspector. The EPA-approved landowner



agreements or private party agreements with the developer/landowner will be used to implement

final remediation, restrictive covenants, access, and maintenance of the remedy development.

This will ensure that the development occurs in a manner that is protective of human health and

the environment. The RA has been designed to meet objectives for industrial or commercial land

use; therefore, the land use is expected to continue as such. Anaconda-Deer Lodge County has

implemented the Anaconda-Deer Lodge County (ADLC) Development Permit System (DPS)

(ADLC, 1992) that sets forth certain requirements for developing property throughout the

County and multiple development districts including the Superfund Planning District (SPD).

The Mike’s Sales Parcel is within the SPD, and should the current use of the property change

from industrial or future development occur, the landowner is responsible for complying with the

provisions of any local, state, or federal requirements. This includes the requirement to sample,

properly handle, and address any soils that exceed certain levels. Waste materials encountered

during any future construction will be disposed of by the landowner and/or developer in the

ADLC Waste Repository (B2.12 Subcell/Opportunity Ponds).



7.0 REFERENCES

ADLC, 1992. Anaconda-Deer Lodge County Development Permit System. Anaconda, Montana.

Adopted September 02, 1992.

AERL, 2001. Anaconda Smelter NPL Site, Old Works/East Anaconda Development Area

Operable Unit. Draft Final Industrial Area Remedial Design Unit. Industrial Area –

Subarea 3 Data Summary Report. Addendum #3. September 2001.

AERL, 2000. Anaconda Smelter NPL Site, Anaconda Regional Water, Waste and Soils

Operable Unit, Short-Term Ground Water Monitoring Sampling and Analysis Plan.

ARCO, 1995. Anaconda Smelter NPL Site Old Works/East Anaconda Development Area

Operable Unit. Data Summary Report. ARCO, Anaconda, Montana.


Operable Unit. Remedial Action Work Plan/Final Design Report, Volume I. August

1994.


Operable Unit. Remedial Investigation/Feasibility Study. ARCO, Anaconda, Montana.

Atlantic Richfield Company, 2015. Anaconda Smelter NPL Site Draft Final Domestic Well

Monitoring Program Quality Assurance Project Plan (QAPP). May 2015.

Atlantic Richfield Company, 2013. Anaconda Smelter NPL Site, Final Engineered Controls

Inspection and Maintenance (I&M) Plan. January 2013.

Atlantic Richfield Company, 2009. Anaconda Smelter NPL Site, Anaconda Regional Water,

Waste and Soils Operable Unit, Short-Term Groundwater Monitoring Sampling and

Analysis Plan (SAP) Addendum No. 1.

Atlantic Richfield Company, 2002. Anaconda Smelter NPL Site Old Works/East Anaconda

Development Area Operable Unit. Industrial Area Remedial Action Work Plan/Final

Design Report, Volume IV, Addendum D, Report I – Industrial Area. August 2002.

CDM, 2015. Draft Anaconda Smelter NPL Site, Domestic Well Monitoring Plan.

EPA, 2011. Record of Decision Amendment, Anaconda Smelter NPL Site, Anaconda Regional

Water, Waste and Soils Operable Unit, Anaconda, Montana. September 2011.

EPA, 1998. Record of Decision, Anaconda Smelter NPL Site, Anaconda Regional Water, Waste

and Soils Operable Unit, Anaconda, Montana. September 1998.



EPA, 1994a. Anaconda Smelter NPL Site, Old Works/East Anaconda Development Area

Operable Unit. Unilateral Administrative Order (UAO) EPA Docket No. Comprehensive

Environmental Response, Compensation, and Liability Act (CERCLA) VIII-94-08.

EPA, 1994b. Record of Decision, Anaconda Smelter NPL Site, Old Works/East Anaconda

Development Area Operable Unit. Anaconda, Montana.

PTI, 1989. Accelerated Removals Engineering Evaluation/Cost Analysis Remedial Action Work

Plan. Anaconda Smelter Site. PTI Environmental Services, Bellevue, Washington.

FIGURES

UTILITY LEGEND

FENCE LINEOVERHEAD POWER LINETELEPHONE LINESANITARY SEWER LINE

TOW

N P

UM

P RO

AD

EXISTING CONTOURS

EXISTING BUILDING

MIKE'S SALES PROPERTY BOUNDARY

MT HWY 1

\\192.168.252.15\PROJECT$\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-PLN-005-15.DWG

DATE:

FIGUREDATUM:

UNITS:

DISPLAYED AS:

COORD SYS/ZONE:

SOURCE:

7/9/2015 10:18:33 AM

1 MIKE'S SALES PARCELLOT# 1, PLAT# 179-A

SITE PLAN

7/2/2015

MSP

NAD 83

FEET

PIONEER

ANACONDA, MONTANA 59711307 E. PARK AVE., SUITE 421

(406) 563-9371

CONCRETE

ASPHALT

TRAILERS, VEHICLES AND CAR PORTS TO BE MOVED PRIOR TO RA

TEST PIT LOCATIONS

APPENDIX A

CONSTRUCTION DRAWINGS

AUGUST 2015

PREPARED BY

PIONEER TECHNICAL SERVICES, INC.

SITE VICINITY MAP

OLD WORKS/EAST ANACONDA INDUSTRIAL AREA

ATLANTIC RICHFIELD COMPANY

PREPARED FOR

LOCATIONPROJECT

MISSOULA

GREATFALLS

HELENA

BUTTE

BOZEMAN

ANACONDA

BILLINGS

MILESCITY

90

15

15

90

90

94

OPERABLE UNIT ANACONDA LOCAL DEVELOPMENT

ANACONDA - DEER LODGE COUNTY, MONTANA

SOURCE: 2009 NAIP PHOTO

PROJECT LOCATION

CITY OF ANACONDA

SCALE - 1"=3000'

MIKE'S SALES PARCEL (LOT NO. 1 OF 6 LOT MINOR SUBDIVISION, PLAT NO. 179-A)

FINAL

GENERAL NOTES:

1. CONTRACTOR IS RESPONSIBLE FOR ALL UTILITIES. UTILITY LOCATIONS SHOWN ON DRAWINGS ARE APPROXIMATE. NOT ALL UTILITIES ARE NECESSARILY SHOWN. ONE CALL SHALL BE NOTIFIED 48 HOURS PRIOR TO THE START OF CONSTRUCTION. ONE CALL 1-800-424-5555.

2. CONTRACTOR SHALL CONTACT UTILITY OWNER 48 HOURS PRIOR TO TRENCHING WITHIN 15 FEET OF ALL OVERHEAD POLES TO ALLOW FOR THE UTILITY COMPANY TO SECURE POLES.

3. THE CONTRACTOR SHALL NOTIFY AN ATLANTIC RICHFIELD REPRESENTATIVE OF ALL UTILITIES ENCOUNTERED DURING CONSTRUCTION, AND SHALL NOT BACKFILL UNTIL AN ATLANTIC RICHFIELD REPRESENTATIVE HAS MADE A RECORD OF ITS TYPE, SIZE, AND LOCATION.

4. CONTRACTOR IS RESPONSIBLE FOR CONTROLLING DUST DURING ALL CONSTRUCTION ACTIVITIES. DUST CONTROL TRIGGER IS VISIBLE DUST.

5. CONTRACTOR IS RESPONSIBLE FOR ALL TRAFFIC CONTROL REQUIREMENTS DURING CONSTRUCTION. CONTRACTOR SHALL SUBMIT A TRAFFIC CONTROL PLAN TO ATLANTIC RICHFIELD FOR APPROVAL.

6. THE CONTRACTOR IS RESPONSIBLE FOR DESIGNING AND CONSTRUCTING STABLE, TEMPORARY EXCAVATIONS AS REQUIRED TO MAINTAIN STABILITY OF BOTH THE EXCAVATION SIDES AND BOTTOM. ALL EXCAVATIONS SHALL COMPLY WITH APPLICABLE LOCAL, STATE, AND FEDERAL REGULATIONS INCLUDING THE CURRENT OSHA EXCAVATION AND TRENCHING SAFETY STANDARDS.

7. LEGAL LOAD LIMIT REQUIREMENTS SHALL BE ENFORCED ON ALL STATE AND FEDERAL HIGHWAYS, CITY STREETS, AND COUNTY ROADS.

8. ANY DISTURBED PROPERTY OR SECTION CORNERS SHALL BE RESET BY A PROFESSIONAL LAND SURVEYOR LICENSED IN THE STATE OF MONTANA, AT THE CONTRACTORS EXPENSE.

9. CONTRACTOR SHALL PROVIDE THEIR OWN WATER FOR DUST CONTROL AND COMPACTION.

10. ALL PERMITS REQUIRED TO PERFORM WORK SHALL BE ACQUIRED BY THE CONTRACTOR.

SHEET NO.

SHEET INDEX

DESCRIPTION1 COVER SHEET2 INDEX, LEGEND, AND GENERAL NOTES3 SITE & UTILITY PLOT PLAN4 COVER PLAN5 GRADING CROSS-SECTIONS STA: 0+00 TO 2+506 GRADING CROSS-SECTIONS STA: 2+627 HAUL ROUTED1 COVER DETAILSD2 CHAIN LINK FENCE DETAILS

EX. FENCE LINEEX. GAS LINEEX. OVERHEAD POWEREX. UNDERGROUND POWEREX. UNDERGROUND PHONEEX. SANITARY SEWER LINEEX. UNDERGROUND WATER LINE

LEGEND

EXISTING-PLAN VIEW LEGEND

ON MORE THAN ONE DRAWING. DETAIL/SECTION IS REFERENCED LOWER HALF OF BUBBLE INDICATESAT DETAIL/SECTIONS: "--" SYMBOL (NO DRAWING NUMBER) IN GENERAL REFERENCE TO NOTED DRAWING NUMBER.ON PLANS: "--" SYMBOL IN UPPER HALF OF BUBBLE INDICATES

AT SECTION

ON PLAN

SECTION INDICATOR

SECTIONSHEET NUMBER ON WHICHDETAIL IS REFERENCED.

DETAIL NUMBER

DETAIL

AT DETAIL

NOTES:

DETAIL INDICATOR

SHEET NUMBER ONWHICH DETAIL APPEARS

DETAIL NUMBER

ON PLAN

1

1

SHEET NUMBER ON WHICHSECTION IS REFERENCED.

SECTION DESIGNATION

SHEET NUMBER ONWHICH SECTION APPEARS

SECTION DESIGNATION

PROFILE ELEVATIONS

60

62

.360

61.0

0

1+00EXISTING GROUND ELEVATION(AS SPECIFIED ON PROFILE) FINISHED GROUND ELEVATION

(AS SPECIFIED ON PROFILE)

\\192.168.252.15\PROJECT$\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-ILN-001-15.DWG7/8/2015 7:34:08 AM

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:

DATE: BY: DESC:REVISION:

\\192.168.252.15\PROJECT$\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-ILN-001-15.DWG7/8/2015 7:34:08 AM

(406

) 563

-937

1

307

EAST

PAR

K AV

E., S

UITE

421

ANAC

ON

DA,

MO

NTA

NA

5971

1

AJW

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JKE

PIONEER

5/26/2015

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OM

PAN

Y

GE

NE

RA

L N

OT

ES

LE

GE

ND

, AN

D

IND

EX

,

PROPOSED PLAN VIEW LEGEND

MANHOLE

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


\\192.168.252.15\PROJECT$\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-PLN-001-15.DWG7/21/2015 8:10:35 AM

MIK

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SA

LE

S PA

RC

EL

LO

T #

1, P

LA

T #

179

-ASI

TE

AN

D U

TIL

ITY

PLO

T P

LA

N

AT

LA

NT

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ICH

FIE

LD

CO

MPA

NY

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ME

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A I

ND

UST

RIA

L A

RE

A

5/26/2015

MSP

NAD 83

FEET

PIONEER

JKE

NLH

AJW

ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

UTILITY LEGEND

FENCE LINEOVERHEAD POWER LINETELEPHONE LINESANITARY SEWER LINESTORM WATER FLOW DIRECTION

CONCRETE

EXISTING ASPHALT REMOVAL

NEW ASPHALT PAD

TRAILERS AND VEHICLESTO BE MOVED PRIOR TO RA

SANDBOX

TYPE A MATERIAL AND SOD

TOW

N P

UM

P RO

AD

FINAL CONTOURS

EXISTING CONTOURS

EXISTING BUILDING


MT HWY 1

REMOVE AND DISPOSE EXISTINGASPHALT AND PLACE NEW ASPHALTOVER REGRADED SURFACE

OVER EXCAVATE 6" THEN INSTALL6" OF TYPE A MATERIAL AND SOD

EXCAVATE FOOTING AREA FORFUTURE BUILDING ADDITION

REMOVE SANDBOX THEN OVER EXCAVATE 6" ANDINSTALL 6" OF GRAVEL COVER AND REPLACE SANDBOX

INSTALL EARTHEN RAMPSTO GARAGE ACCESS

REMOVE EXISTING FENCE AND REPLACE WITH8' CHAIN LINK PRIVACY FENCE, SEE SHEET D2

6"

TYPE B1 COVER COMPACTED TO 95% OF RELATIVEDENSITY PER TECHNICAL SPECIFICATIONS.

EXISTING SUBGRADE COMPACTED TO 95% OF RELATIVEDENSITY PER TECHNICAL SPECIFICATIONS.

LEGEND:

ENGINEERED COVER (MIN 6") TYPE B1 MATERIAL 2.0 ACRES

TRAILERS AND VEHICLES TO BEMOVED PRIOR TO RA

TYPE A MATERIAL AND SOD

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


\\192.168.252.15\PROJECT$\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-PLN-003-15.DWG7/21/2015 8:11:18 AM

MIK

E'S

SA

LE

S PA

RC

EL

LO

T #

1, P

LA

T #

179

-AC

OV

ER

PL

AN

AT

LA

NT

IC R

ICH

FIE

LD

CO

MPA

NY

RE

ME

DIA

TIO

NO

W/E

AD

A I

ND

UST

RIA

L A

RE

A

5/26/2015

MSP

NAD 83

FEET

PIONEER

JKE

NLH

AJW

ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

UTILITY LEGEND

FENCE LINEOVERHEAD POWER LINETELEPHONE LINESANITARY SEWER LINE

FINAL CONTOURS

EXISTING CONTOURS

EXISTING BUILDING


TOW

N P

UM

P RO

AD

MT HWY 1

EXISTING SHED

INSTALL NEW ASPHALT PAD, SEE SHEET D1

CONCRETE

EXISTING ASPHALT REMOVAL

NEW ASPHALT PAD

SANDBOX

REMOVE AND DISPOSE EXISTINGASPHALT AND PLACE NEW ASPHALTOVER REGRADED SURFACE

SEE SHEETS 5 AND 6 FORGRADING CROSS-SECTIONS

OVER EXCAVATE 6" THEN INSTALL6" OF TYPE A MATERIAL AND SOD

EXCAVATE FOOTING AREA FORFUTURE BUILDING ADDITION

REMOVE SANDBOX THEN OVER EXCAVATE 6" ANDINSTALL 6" OF GRAVEL COVER AND REPLACE SANDBOX

INSTALL EARTHEN RAMPSTO GARAGE ACCESS

REMOVE EXISTING FENCE AND REPLACE WITH8' CHAIN LINK PRIVACY FENCE, SEE SHEET D2

STA 0+00

5190

5195

5190

5195

0 10 20 30 40 50 60 70 80 90 1000-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

STA 0+50

5190

5195

5190

51950 10 20 30 40 50 60 70 80 90 10

00-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

STA 1+00

5190

5195

5190

5195

0 10 20 30 40 50 60 70 80 90 1000-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

STA 1+50

5190

5195

5190

5195

0 10 20 30 40 50 60 70 80 90 100

1100-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

STA 2+00

5190

5195

5190

5195

0 10 20 30 40 50 60 70 80 90 100

1100-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

STA 2+37

5190

5195

5190

5195

0 10 20 30 40 50 60 70 80 90 100

1100-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


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MIK

E'S

SA

LE

S PA

RC

EL

LO

T #

1, P

LA

T #

179-

AG

RA

DIN

GC

RO

SS-S

EC

TIO

NS

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LA

NT

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ICH

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LD

CO

MPA

NY

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ME

DIA

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NO

W/E

AD

A I

ND

UST

RIA

L A

RE

A

5/26/2015

MSP

NAD 83

FEET

PIONEER

JKE

NLH

AJW

ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

BUILDING DONOT DISTURB

LEGEND:

CUT

FILL

TYPE B1 GRAVEL

FILL LOW PONDING AREA AND INSTALLEARTHEN RAMPS TO GARAGE DOORS.

VERTICAL SCALE: 1" = 10'

BUILDING DONOT DISTURB

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


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MIK

E'S

SA

LE

S PA

RC

EL

LO

T #

1, P

LA

T #

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AG

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DIN

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RIA

L A

RE

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5/26/2015

MSP

NAD 83

FEET

PIONEER

JKE

NLH

AJW

ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

LEGEND:

CUT

FILL

TYPE B1 GRAVEL

VERTICAL SCALE: 1" = 10'

NOTE:

QUANTITIES ARE BASED ON NEAT LINE CALCULATIONS AND DO NOT INCLUDE A SWELL FACTOR.

WASTECONSOLIDATIONAREA

PROJECT AREA

LIME QUARRY

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


P:\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-PLN-004-15.DWG8/13/2015 1:19:40 PM

HA

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NAD83

FEET

2005 HORIZON AERIAL

JKE

NLH

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ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

LEGEND

LIME QUARRY = 7.7 MILES

WASTE CONSOLIDATION AREA = 4 MILES

CSOU HAUL ROUTE = 10.6 MILES

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


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MIK

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SA

LE

S PA

RC

EL

LO

T #

1, P

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T #

179-

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ER

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LA

NT

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RIA

L A

RE

A

5/26/2015

NA

NA

FEET

PIONEER

JKE

NLH

AJW

ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

CONTRACTOR SHALL PLACE AND COMPACTMATERIALS FROM THE LIME QUARRY

PIT TO OBTAIN 6" OF B-1 COVER

EXISTING OR GRADED SUBGRADEMATERIALS COMPACTED TO 95%

OF RELATIVE DENSITY,+/- 3% PERTECHNICAL SPECIFICATIONS

TYPE B-1 COVER DETAIL

6"

ASPHALT DETAIL

TYPE BI COVER

INSTALLED 4" NEW ASPHALT TOSEAMLESSLY MATCH EXISTING

ASPHALT ELEVATIONS.

INSTALLED 6" THICK SECTION OF COMPACTED BASECOURSE IN EXCAVATED CROSSING FOOTPRINT ANDCOMPACTED TO 95% ±3% PER TECHNICAL SPECIFICATIONS.

6" TYPE B1 GRAVEL

12" STRUCTURAL FILLCOMPACT TO 95% RELATIVE

DENSITY +/- 3% OPTIMUM MOISTURE

IF UNSUITABLE SUBGRADE MATERIALS AREFOUND, OVER EXCAVATE BY 12" AND INSTALLSTRUCTURAL FILL PRIOR TO TYPE B1 GRAVEL.

STRUCTURAL FILL DETAIL

PROVIDE 48" DEPTH OF CONCRETE FOR GATE POSTS AT ALL DOUBLE SWING GATES.

SEE TABLE

IN CONCRETE (MIN.)DEPTH OF POST

32"36"

SECTION10" ROUND

DOUBLE PANEL

1"-2"8'

ABOVE GROUNDWIRE FABRIC

OF FABRICHEIGHT

PULL POST AND CORNER POST BRACING

CORNERSECTION FOR12" ROUND

SECTION10" ROUND

NOTES:

1. SEE THE SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS.

2. INSTALL DOUBLE PANELS AT 300' MAXIMUM SPACING AND AT ALL FENCE CORNERSWITH DEFLECTION ANGLES GREATER THAN 10°.

3. PULL POST BRACING IS THE SAME AS CORNER BRACING.

4. ALL CONCRETE IS M-3000 CLASS "C" OR BETTER.

CONCRETEDEPTH OF

SEE TABLE

LINE POST

OR PULL POSTGATE, END, CORNER

BRACE

12" ROUND SECTION

TRUSS ROD

10'-0"

BRACE

POSTCORNER

TOP RAIL

10" ROUND SECTION

BARBED SELVAGETWISTED AND

10'-0"

TENSION WIRE

8'-0" ASSPECIFIED

LINE POST

TWISTED AND BARBED SELVAGE

10'-0"

10'-0"

CHAIN LINK FENCE

TRUSS ROD

TOP RAIL

CHAIN LINK FABRIC

DEPTH TABLE

DRAWN BY:

DESIGNED BY:

CHECKED BY:

APPROVED BY:

PROJECT NO:

DATE:

DISPLAYED AS:

COORD SYS/ZONE:

DATUM:

UNITS:

SOURCE:


\\192.168.252.15\PROJECT$\ANADATA\ARCO\OLD WORKS\2013\MIKE SALES\DWGS\MIKE SALES-CO-DET-003-15.DWG7/9/2015 8:19:23 AM

CH

AIN

LIN

KF

EN

CE

DE

TA

ILS

AT

LA

NT

IC R

ICH

FIE

LD

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MPA

NY

RE

ME

DIA

TIO

NO

W/E

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A I

ND

UST

RIA

L A

RE

A

5/26/2015

NA

NA

FEET

PIONEER

JKE

NLH

AJW

ANAC

ON

DA,

MO

NTA

NA

5971

130

7 E.

PAR

K AV

E., S

UITE

421

(406

) 563

-937

1

APPENDIX B

TECHNICAL SPECIFICATIONS

FINAL

TECHNICAL SPECIFICATIONS

For Old Works/East Anaconda Development Area Operable Unit

Mike’s Sales Parcel (Lot No. 1 of 6 Lot Minor Subdivision; Plat No. 179-A) Individual Site Work Plan

Industrial Area

Prepared for:

Atlantic Richfield Company 317 Anaconda Road


Prepared by:

Pioneer Technical Services, Inc. 307 East Park Street, Suite 421

Anaconda, Montana 59711

August 2015

TABLE OF CONTENTS DIVISION 1 – GENERAL REQUIREMNTS GENERAL PROCEDURES .............................................................................. 01000-1 to 01000-4 DIVISION 2 – SITEWORK MOBILIZATION………………. ..................................................................... 02010-1 to 02010-1 CLEARING AND GRUBBING ........................................................................ 02110-1 to 02110-3 FILL MATERIALS AND PLACEMENT ........................................................ 02205-1 to 02205-6 SITE GRADING ………….. ............................................................................. 02211-1 to 02211-2 EXCAVATING…………. ........................................ …………………………02222-1 to 02222-2 BACKFILLING……... ...................................................................................... 02223-1 to 02223-2 BASE COURSE……... ...................................................................................... 02515-1 to 02515-6 BITUMINOUS MATERIALS ........................................................................... 02521-1 to 02521-4 ASPHALT PAVEMENT. ................................................................................ 02525-1 to 02525-13

01000-1 Old Works/East Anaconda Development Area Mike’s Sales Parcel ISWP Technical Specifications

SECTION 01000 GENERAL PROCEDURES

A. TEMPORARY FACILITIES AND SITE CONTROL

1. Contractor shall implement the Atlantic Richfield Company Control of Work Defined Practice for all phase of the work.

2. Contractor shall implement an appropriate program to protect the work in

progress and Atlantic Richfield Company's operations from theft, vandalism, and unauthorized entry.

3. Contractor shall provide temporary parking areas for project personnel. 4. Contractor shall use only those haul roads outside of the Operable Unit

boundaries as approved by Atlantic Richfield Company prior to hauling. Contractor shall maintain all haul roads in good condition. Contractor shall provide dust control to ensure that dust levels are minimized, and to comply with current standards.

5. Contractor shall notify and coordinate with all appropriate utility companies and

Atlantic Richfield Company before conducting work proximate to overhead and buried utilities.

6. Contractor shall only cross the existing railroad at existing crossings or newly

installed crossings as approved by the railroad Owner and Atlantic Richfield Company. The railroad Owner has the right to limit the crossings where loaded haul trucks will be allowed to cross.

7. Contractor shall contact the utility owner to determine cover or clearance

requirements of the existing utilities. The Contractor shall be responsible for improving existing roads or installing new roads so that they will satisfy these requirements.

B. SURVEYING

1. Construction staking services for control points, reference grid, initial location of site structures, initial setting of centerlines, and surveys to determine pay quantities will be provided by Atlantic Richfield Company. Contractor shall be responsible for providing all other surveying and staking requirements necessary to conduct the Work.

2. Original Survey Control monuments will be furnished by Atlantic Richfield

Company, and are shown on the Construction Drawings. Maintenance of the original staking is the obligation of the Contractor. Any additional staking is at


the Contractor’s expense. 3. A licensed land surveyor shall reset any property corner or monument, including

MDT Right of Way markers; that are damaged or buried by Contractor due to Construction, at the expense of the Contractor. Contractor shall reset all survey monuments disturbed or buried during the RA. A licensed surveyor shall complete all Work.

C. SUBMITTALS

1. The Contractor shall provide to Atlantic Richfield Company complete product information and shop drawings, where required, for all materials and equipment proposed for incorporation into the project. Information shall include manufacturer, model or catalog designation, reference standards, complete installation instructions, and shop drawings that show dimensions and locations of all parts. Information shall be submitted prior to ordering, and in a timely manner to provide Atlantic Richfield Company time for review and approval.

2. In connection with all of the activities described in these Technical Specifications,

the Contractor shall be responsible and shall notify Atlantic Richfield Company and Atlantic Richfield Company's representatives of any governmental laws or regulations, in addition to those identified in these specifications and the Individual Site Work Plan (ISWP), including those relating to environmental protection and zoning, that would regulate, prohibit or control the Contractor’s performance under these Technical Specifications.

D. TRAFFIC CONTROL AND SITE SAFETY

Traffic control and dust control site safety shall be the sole responsibility of the Contractor. Adequate signs, barricades, cones, drums, barriers, lighting, persons or flaggers, security guards, and other methods or devices shall be utilized. Contractor is responsible for coordinating site access work hours, safety barriers, etc. with the affected property owner(s).

E. EROSION AND SEDIMENT CONTROL

The Contractor shall plan and execute work to control and minimize surface runoff from cuts, fills, and other disturbed areas. The Contractor shall prevent sediment and/or sediment-laden water from entering nearby waterways.

F. CONSTRUCTION SEQUENCING AND OTHER CONTRACTORS

1. The Contractor shall coordinate his construction activities with those of any and all other contractors that may be working on the site. The Contractor's work shall be conducted in a manner that will not impede the progress of other concurrent construction activities, or landowner activities.


2. Debris disposal or equipment removal/relocation is the sole responsibility of the

landowner. The Contractor shall coordinate his construction activities in a manner which allows the landowner a reasonable amount of time to remove debris from the site.

G. EXISTING STRUCTURES

1. The contractor shall be responsible for protecting existing structures within and external to the construction area. Damage to existing structures shall be corrected by the Contractor at no additional cost to Atlantic Richfield Company.

H. COMMUNICATIONS

All notices, demands, requests, instructions, approvals, proposals, and claims by the Contractor must be in writing. All correspondence is required to be delivered to Atlantic Richfield Company, unless otherwise specified in writing to the Contractor.

I. PROGRESS MEETINGS

Project coordination will be facilitated through job site meetings held weekly. At a minimum, the Contractor's on-site Project Manager, Health and Safety Manager, and appropriate field personnel shall be present at the progress meetings. The Contractor shall develop the agenda, and record and distribute meeting minutes for the progress meetings. The topics shall include but not be limited to the following:

1. Health and safety issues; 2. Status of work items initiated to date; 2. Scheduled items for the following week; 3. Quality Control and Quality Assurance; 5. Problems encountered and proposed solutions; 6. Other items identified by Atlantic Richfield Company or Contractor; and 7. Coordination of work activities with property owner(s). A landowner site walk is required with Atlantic Richfield Company and/or their representative(s), agency personnel and other as required prior to commencement of work. Meeting minutes will be incorporated into the project records.


J. RECORD KEEPING REQUIREMENTS

The contractor shall maintain on-site, at all times, a complete set of all Contract Documents, addenda, change orders, and other modifications to the Work.

The Contractor shall be responsible for furnishing detailed Project Record Documents (Record Drawings). Record Drawings may be submitted on grid paper drawn at the proper scale. Record Drawings must be updated on a weekly basis; and an updated Project Record Document must be attached with final Application for Payment (unless waived by Atlantic Richfield Company).

K. STANDARD SPECIFICATIONS

The Technical Specifications for the ISWP are supplemented by the Montana Public Works Standard Specifications, Latest Edition (Standard Specifications). In performance of the Work, these Technical Specifications shall take precedence over the Standard Specifications. If, during the performance of the Work, the Contractor finds a conflict, error or discrepancy between the Technical Specifications and the Standard Specifications, the conflict, error or discrepancy shall be reported to Atlantic Richfield Company at once, before proceeding with the affected Work. The Contractor may proceed with the work only after receiving a written interpretation or clarification from Atlantic Richfield Company.

END OF SECTION 01000


SECTION 02010 MOBILIZATION PART 1 GENERAL A. WORK INCLUDED

This work item constitutes all preparatory work and operations performed by the Contractor, including, but not limited to, those actions necessary for the transportation and movement of personnel, equipment, supplies and incidentals to the project site; and for the establishment of all offices and other facilities necessary to work on the project. Mobilization for subcontractors and subcontracted work will be considered to be included.

Mobilization shall include the preparation of staging area(s). Drainage and erosion protection for staging areas shall be provided during construction as approved by Atlantic Richfield Company. Oil, grease, and other solid or liquid wastes shall not be disposed of in the staging area or on the project site. All solid or liquid wastes shall be disposed of off-site at a properly licensed facility. Immediately following completion of construction, the staging area(s) shall be thoroughly cleaned of all trash and debris, scarified, and revegetated.

PART 2 PRODUCTS

(Not Used) PART 3 EXECUTION A. REQUIREMENTS

Provide all labor, tools, equipment, materials, staging area(s), offices, facilities, and incidentals necessary to complete the work as specified.

B. Adequate notification (not less than 48 hours) to the property owner(s) of Contractor

mobilization requirements shall be completed prior to commencement of any work, including, but not limited to, utility locates.



SECTION 02110 CLEARING AND GRUBBING PART 1 GENERAL A. CONDITIONS

1. Attention is directed to the General Procedures (Section 01000), which are herewith made a part of this section.

2. Review Plans and all sections of the Specifications for provisions therein

affecting the work of this section.

3. The work covered by this section consists of furnishing all materials, labor and equipment for the clearing and grubbing of the Work as specified and as shown on the Drawings, including the removal and satisfactory disposal of all trees, downed timber, brush, projecting roots, stumps, rubbish and all other objectionable material within the clearing lines approved by Atlantic Richfield Company, subject to the terms and conditions of the Contract. During clearing, grubbing and debris removal, topsoil shall be protected at all times.

B. SECTION INCLUDES

1. Removal of surface debris, equipment, mobile structures, etc. (Landowner Responsibility).

2. Clearing and grubbing of trees, shrubs, and other plant life and grass in the area

directly affected by the construction activities associated with this Contract.

3. Preservation of trees and shrubs designated to remain.

4. Topsoil excavation. C. RELATED SECTIONS

Section 01000 – General Procedures Section 02211 - Site Grading

PART 2 PRODUCTS

(Not Used)


PART 3 EXECUTION A. PREPARATION

1. Verify that existing plant life designated to remain is flagged or otherwise identified.

2. Prior to clearing, the Contractor shall ascertain the limits of the work area and any

structures so as not to remove any vegetation that does not require removal. This responsibility shall rest solely with the Contractor, and any damage caused by the Contractor as a result of such negligence shall be at the Contractor's own risk. The Contractor must confine the operation of equipment to within excavation limits, easements and approved haul roads except as otherwise approved in writing by Atlantic Richfield Company. Any damage occurring outside these areas shall be repaired at the Contractor's expense.

B. PROTECTION

1. Locate, identify, and protect from damage, existing utilities, monitoring wells, fences or other items identified on the Drawings which will remain in service during and/or after construction. Any monitoring wells, control points, other unique structures not shown on the Drawings or specified as being removed, shall be preserved, unless otherwise directed by Atlantic Richfield Company.

2. Protect survey monuments and existing structures from damage or displacement.

C. CLEARING

1. Clear areas as required for access to the site and for execution of the Work as approved by Atlantic Richfield Company.

2. Remove identified trees, shrubs, stumps, roots, brush, rubbish, and other

objectionable materials within areas to be regraded or occupied by permanent construction, and the surfaces of all borrow areas and stockpile sites.

3. At any time during construction, Atlantic Richfield Company may designate certain

trees or grassed areas to be removed or retained. 4. Borrow areas shall be cleared as required under these specifications and as directed

by Atlantic Richfield Company.


D. REMOVAL

1. Disposal of all trees, branches, snags, brush, stumps, debris, etc. resulting from clearing and grubbing shall be the responsibility of the Contractor and shall be disposed of within an Atlantic Richfield Company-designated disposal area at the Contractor's expense.


Old Works/East Anaconda Development Area Mike’s Sales Parcel ISWP Technical Specifications

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SECTION 02205 FILL MATERIALS AND PLACEMENT PART 1 GENERAL A. SECTION INCLUDES

This section specifies fill materials, identifies sources of fill materials, and specifies fill placement requirements.

B. RELATED SECTIONS

Section 02110 – Clearing and Grubbing Section 02211 – Site Grading Section 02221 – Trenching, Backfilling and Compacting Section 02223 – Backfilling

C. DEFINITIONS

1. Engineered Covers: Fill placed on existing soils or cleared subgrade, as indicated on the Plans. Engineered covers include but are not limited to:

a. Type I Cover: place 18-inches of cover soil over a 2-inch layer of

limestone gravel that is placed directly over visual waste. Depths of limestone gravel and cover soils noted above shall be minimums for final material thickness. Type B1 Cover: place a nominal 6-inches of B1 gravel, compacted with smooth-drum vibratory roller. Final compacted cap thickness shall be a minimum of 6 inches (as measured after compaction and initial settlement).

Structural Fill: place and compact as required in areas required to

with-stand traffic or other loading. Material shall not be classified as Sand or Loamy sand.

2. Equipment to be moved: Equipment, debris and other material that are

designated to be moved from the construction area by the landowner. 3. Sub-grade: Existing surface material or surface graded to provide positive

drainage from the site. D. REFERENCES

1. Sampling and Preparation

a. ASTM D75 - Standard Practice for Sampling Aggregates.


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b. ASTM D420 - Recommended Practice for Investigating and

Sampling Soil and Rock.

2. Classification

a. ASTM D421 - Standard Practice for Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants.

b. ASTM D422 - Standard Method for Particle-Size Analysis of

Soils.

c. ASTM D2487 - Classification of Soils for Engineering Purposes.

d. ASTM D2488 - Standard Practice for Description and Identification of Soils (Visual-Manual Procedure).

e. ASTM D4318 - Standard Test Method for Liquid Limit, Plastic

Limit and Plasticity Index of Soils.

3. Density and Moisture Content: Field

a. ASTM D1556 - Test Method for Density of Soil in Place by the Sand-Cone Method.

b. ASTM D2922 - Test Methods for Density of Soil and Soil-

Aggregate in Place by Nuclear Methods (Shallow Depth).

c. ASTM D3017 - Test Methods for Moisture Content of Soil and Soil-Aggregate Mixtures.

4. Density and Moisture Content: Laboratory

a. ASTM D698 or AASHTO T99 - Test Methods for

Moisture-Density Relations of Soils and Soil-Aggregate Mixtures, Using 5.5 lb (2.49 Kg) Rammer and 12 inch (304.8 mm) Drop.

b. ASTM D2216 - Laboratory Determination of Water (Moisture)

Content of Soil, Rock, and Soil Aggregate Mixtures. c. ASTM D4643 - Determination of Water (Moisture) Content of

Soil, Microwave Oven Method.

d. ASTM D4718 - Standard Practice for Correction of Unit Weight and Water Content for Soils Containing Oversize Particles.


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E. SUBMITTALS

1. Materials source: Submit name of imported materials suppliers. All suppliers must be approved by Atlantic Richfield Company.

2. Laboratory Test Results: Submit data sheets and test results for

compliance testing to Atlantic Richfield Company for review. PART 2 PRODUCTS A. SOIL MATERIALS

1. Type B1 Gravel: Limestone rock derived from the Lime Quarry located west of Anaconda.

Sieve Designation Percent by Weight Passing

1-inch 100¾-inch 97-100

3/8-inch 50-85 #4 35-71 #10 25-30 #40 12-30 #200 8-16#200 < 2/3 of #40

Liquid Limit 35 Max. Plastic Index 4-12LA Abrasion < 50

Highway Engineering Specifications for Type C Soil Aggregate Material U.S. Department of Transportation-Standard specifications for Construction of Roads and Bridges on Federal Projects

2. Type A Soil: Material from Atlantic Richfield Company designated borrow sources, free of debris, deleterious or objectionable materials, and rock larger than 6-inches, and classified as anything but a Sand or Loamy sand. Type A soil also contains less than 45 percent rock (material larger than #10 sieve) content on a volume-to-volume basis.

3. General Fill Material: Soil material from Atlantic Richfield Company

designated borrow sources not meeting Type A Soil or Type B Soil requirements above.

4. Structural Fill: 12-inch minimum thickness of Atlantic Richfield approved

structural fill meeting the following gradation requirements:


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Size (inches) Percent Passing 6 100 3 60 to 95 1 ½ 40 to 75 ¾ 25 to 60 No. 4 10 to 40 No. 200 0 to 10 5. Sub-grade Material: Any existing material present on the surface of the

landowner’s property. B. SOURCE QUALITY CONTROL

1. Tests and analysis of soil materials will be performed in accordance with applicable ASTM test methods, as listed under Part 1D of this section.

2. If tests indicate materials do not meet specified requirements, remove and

replace material and retest at no cost to Atlantic Richfield Company.

3. Frequency and need for testing will be at Atlantic Richfield Company's direction.

PART 3 EXECUTION

A. PREPARATION FOR PLACEMENT

1. Structural Fill

a. Compact sub-grade or existing underlying fill to meet density requirements specified in Part 3C of this section to a minimum depth of 12 inches. If soft areas of sub-grade or existing underlying fill cannot be compacted in accordance with Part 3C, over-excavate (cut out the underlying fill) and backfill with the material type specified for subsequent fill. Compact to minimum density requirements for subsequent fill material as specified in Part 3C.

2. Engineered Covers a. Gravel cover shall be placed in all areas designated on the

Construction Drawings and shall be placed such that a nominal 6-inch lift is achieved after settlement and compaction.

b. Ensure that areas to receive Engineered Covers are cleared as

specified in Section 02110, and that the surface is graded to lines and grades as specified on the Plans and in Section 02211.


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c. Ensure that areas to receive Engineered Covers are graded to provide drainage as shown in the Construction Drawings. Surfaces to receive Type B1 cover shall be compacted. The Contractor shall receive approval of the surface elevation and surface preparation from Atlantic Richfield Company prior to placement of Engineered Covers (see also Part 3C, No. 3b below).

d. Tailings materials shall be used as fill material only in areas with

existing tailings in place. Tailings materials shall not be placed in areas with clean fill or contaminated soils only present.

B. PLACEMENT

1. General (Structural and Non-Structural Fill):

a. Maintain positive surface drainage to minimize ponding of water on fill.

b. Material shall not be frozen when placed. Material shall not be

placed on ice. Material shall not be placed on frozen sub-grade unless directed by Atlantic Richfield Company. Frozen sub-grade shall be scarified, disked or otherwise made suitable to receive subsequent fill and provide an acceptable bond between lifts, as approved by Atlantic Richfield Company.

2. Structural Fill:

a. All surfaces upon or against which Structural Fill will be placed,

including previously placed and compacted layers, shall be free of all objectionable materials (as determined by Atlantic Richfield Company in accordance with Section 02110), shall be moist but free of standing or ponded water, and shall be scarified as necessary so as to provide a suitable bond between the existing and newly placed material.

b. Place fill in lifts not to exceed 12 inches in loose thickness.

c. Finish grade to within plus or minus 0.1 foot of line and grade

shown on the Construction Drawings.

3. Engineered Covers

a. Areas requiring placement of Engineered Covers are designated on the Plans.

b. Thicknesses of material layers in Engineered Covers shown on the

Plans are minimum thicknesses after compaction. To verify soil layer thicknesses, Atlantic Richfield Company, at its discretion, will perform a random sub-grade survey, followed by a random


02205-6

survey of the same points at final grade. The Contractor shall schedule his work to allow Atlantic Richfield Company performance of sub-grade survey prior to placing Engineered Covers.

C. COMPACTION

1. Structural Fill and Gravel Cover:

a. Moisture Content: Moisture content, as determined by ASTM D2216, shall be within 2 percent of the optimum moisture content as determined by ASTM D698. The moisture content shall be uniform throughout the lift. Placed materials not meeting this requirement, as determined by testing by Atlantic Richfield Company, shall be wetted or dried as necessary to meet this requirement, and mixed to a uniform water content. There is no moisture requirement for the gravel cap.

b. Density:

i) Materials containing less than 5 percent by dry weight of

particles passing a U.S. Standard No. 200 sieve, shall be compacted to a minimum of 90 percent of the maximum index density as determined by ASTM D4253.

ii) Materials containing greater than 5 percent by dry weight

of particles passing a U.S. Standard No. 200 sieve shall be compacted to a minimum of 95 percent of the maximum dry density as determined by ASTM D698.

2. Non-Structural Fill: Compaction of Non-Structural Fill is not required.



SECTION 02211 SITE GRADING PART 1 GENERAL A. SECTION INCLUDES

Excavating, placing and compacting fill, and contouring the site to lines and grades shown on the Plans.

B. RELATED SECTIONS

Section 01000 – General Procedures Section 02110 – Clearing and Grubbing Section 02205 - Fill Materials and Placement Section 02222 - Excavating Section 02223 - Backfilling

C. REFERENCES

As listed in Section 02205, Part 1D. PART 2 PRODUCTS A. MATERIALS

Structural Fill and Non-structural Fill are defined in Section 02205, Part 1C. PART 3 EXECUTION A. PREPARATION

1. Identify required lines, levels, contours, and datum.

2. Stake and flag locations of known utilities.

3. Locate, identify, and protect from damage above and below grade utilities that will remain in use during and/or after construction.

4. Notify the appropriate utility companies if utilities are to be affected by the work.

5. Protect existing survey monuments and structures from grading equipment and

vehicular traffic.

6. Develop a plot plan showing all known utilities and monuments within the work area.


B. EXCAVATION AND FILLING

1. If fill is needed in excess of that available from required excavations, such fill shall be obtained from Atlantic Richfield Company approved borrow sources, as specified in Section 02205, Part 3A. With prior Atlantic Richfield Company approval, non-waste excess cut material from subgrade preparation may be used as subgrade fill.

2. Place fill materials on continuous layers in lifts not exceeding 12 inches in

thickness prior to compaction.

4. Finished surfaces shall be graded to reestablish the pre-remediation drainage patterns.

5. Portions of the site may consist of abrasive and/or extremely acidic soils. The

wear factor on excavation equipment may be higher than expected in these areas. Atlantic Richfield Company will not compensate the Contractor for any damage to equipment used on this project.

C. TOLERANCES

Grading shall be within ±0.1 foot of elevations and ±0.1 percent of slopes shown on the Plans. Grading shall not be consistently high or low within the specified tolerance range, but shall be as close as practicable to the grades shown on the Plans.

D. FIELD QUALITY CONTROL

1. Testing for compaction compliance shall be conducted by Atlantic Richfield Company. Backfill not meeting the requirements of these specifications shall be corrected at the Contractor's expense.

2. The Contractor shall determine grade compliance necessary for all stages of

construction. Sub-grade and Final Grade compliance with elevations and grades shown on the Plans will be verified by Atlantic Richfield Company’s surveyors at the direction of Atlantic Richfield Company. Contours and elevations not meeting the requirements of these specifications shall be corrected at the Contractor's expense.



SECTION 02222 EXCAVATING PART 1 GENERAL A. SECTION INCLUDES

Excavation as indicated on the Drawings. B. RELATED SECTIONS

Section 01000 – General Procedures Section 02110 – Clearing and Grubbing Section 02205 – Fill Materials and Placement Section 02211 – Site Grading Section 02223 – Backfilling

C. REGULATORY REQUIREMENTS

Conform to OSHA Construction Standards for Excavations, and all Atlantic Richfield Company safety requirements for excavations.

D. FIELD MEASUREMENTS

Verify that survey control monuments are as indicated. PART 2 PRODUCTS

Not used. PART 3 EXECUTION A. PREPARATION

1. Identify required lines, levels, contours, and datum. 2. Locate and identify existing utilities within the work area that will remain in

service during and/or after construction. B. EXCAVATION

1. Protect adjacent structures which may be damaged by excavation work.

2. Protect survey monuments and other existing structures from excavation equipment and vehicular traffic.

3. Stockpiling Excavated Materials: Stockpile excavated materials away from the

excavation at a safe distance in accordance with Occupational Safety and Health Regulations, and other applicable codes and governing authorities. Remove


waste to the Anaconda Smelter Development Repository (B2.12 Subcell/Opportunity Ponds) or a location designated by Atlantic Richfield Company, excavated materials not suitable or required for backfilling.

4. Grade top perimeter of excavation to prevent surface water from draining into

excavation.

5. Trim excavation. Remove loose matter, lumped subsoil, boulders, and rock.

6. Compact over-excavated areas in accordance with Section 02205.

7. Protect from damage or restore to their original condition all surface improvements encountered during trenching. Improvements shall include but not be limited to surfacing, pavement, utilities, signs, and fencing.

C. EXCESS EXCAVATED MATERIAL

Contaminated Materials: Materials deemed by Atlantic Richfield Company to be contaminated shall be handled as designated on the plans or by Atlantic Richfield Company.

D. TOLERANCES

Uniformly excavate areas to within ± 0.1 feet of elevations and ± 0.1 percent of grades (slopes) shown on the Plans, or as directed by Atlantic Richfield Company. Excavated lines and grades shall not be consistently high or low within the specified tolerance range, but shall be as close as practicable to the elevations shown on the Plans.

E. FIELD QUALITY CONTROL

Provide for visual observation and inspection of bearing surfaces. END OF SECTION 02222


SECTION 02223 BACKFILLING PART 1 GENERAL A. SECTION INCLUDES

Backfilling as indicated on the Plans. B. RELATED SECTIONS

Section 01000 – General Procedures Section 02205 – Fill Materials and Placement. Section 02222 – Excavating

C. QUALITY CONTROL

Reference Standards: As listed in Section 02205. PART 2 PRODUCTS A. FILL MATERIALS

Soil Materials as specified in Section 02205. PART 3 EXECUTION A. PREPARATION

Prepare surfaces to receive fill in accordance with Section 02205. B. PLACEMENT

1. Place and compact backfill materials in accordance with Section 02205.

2. Compacted backfill shall conform to contours and elevations shown on the Drawings.

3. Do not backfill against unsupported structures.

4. Make gradual grade changes. Gradually blend slopes into level areas.


C. TOLERANCES

1. Finish-grade all work to within ± 0.1 feet of elevations and ± 0.1 percent of grades (slopes) shown on the Plans, unless specified otherwise in Section 02205. Top of finished grade shall not be consistently high or low within the specified tolerance range, but shall be as close as practicable to the elevations shown on the Plans.

2. All finished surfaces shall be graded to maintain positive drainage.

D. FIELD QUALITY CONTROL

Atlantic Richfield Company will perform compaction testing in accordance with applicable methods specified in Section 02205. If tests indicate the work does not meet specified requirements, the work shall be removed, replaced, and retested at Contractor's expense.

E. PROTECTION OF FINISHED WORK

1. Protect finished work from damage.

2. Reshape and re-compact fills subjected to vehicular traffic. END OF SECTION 02223


SECTION 02515 BASE COURSE

PART 1 - GENERAL A. WORK INCLUDED

The work covered under this section consists of furnishing all materials, crushing if necessary, loading, hauling, spreading, shaping, watering, compacting, labor, tools, equipment and incidentals for the construction of base course to the lines, grades, and dimensions shown on the Drawings and placed in accordance with the specifications.

B. RELATED WORK

1. Section 02521 – Bituminous Materials 2. Section 02525 – Asphalt Pavement

C. DEFINITIONS

Base course is defined as an untreated crushed or screened natural gravel aggregate material from an approved borrow source that is placed on a prepared subgrade.

D. REFERENCES

ASTM D 75 Standard Practice for Sampling Aggregates. ASTM D 420 Recommended Practice for Investigating and Sampling Soil and

Rock. ASTM D 421 Standard Practice for Dry Preparation of Soil Samples for Particle-

Size Analyses and Determination of Soil Constants. ASTM D 422 Standard Method for Particle Size Analysis of Soils. ASTM D 698 Moisture-Density Relations of Soils and Soil-Aggregate Mixtures

Using a 5-lb Rammer and 12-inch Drop. ASTM D 2216 Laboratory Determination of Water (Moisture) Content of Soil,

Rock, and Soil Aggregate Mixtures. ASTM D 2487 Classification of Soils for Engineering Purposes. ASTM D 2922 Test Methods for Density of Soil and Soil-Aggregate in Place by

Nuclear Methods (Shallow Depth).


ASTM D 3017 Moisture Content of Soil and Soil-Aggregate In-Place by Nuclear Methods (Shallow Depth).

ASTM D 4318 Standard Test Method for Liquid Limit, Plastic Limit, and

Plasticity Index of Soils. ASTM D 4718 Standard Practice for Correction of Unit Weight and Water

Content for Soils Containing Oversize Particles. ASTM C 136 Sieve Analysis of Fine and Coarse Aggregate. MT-209 Percentage of Wear by Los Angeles Abrasion

E. SUBMITTALS

1. Test Reports: The Contractor shall test materials and submit one copy of the following results to the Engineer:

a. All field density test reports and laboratory compaction curves completed

by the Contractor. b. All sieve analyses (gradation) and Atterberg limits analyses performed by

the Contractor. c. A complete set of aggregate quality tests as required by the Specifications.

F. PRODUCT HANDLING

1. A sufficient number of haul vehicles shall be utilized to assure a continuous operation with consideration given to distance of haul, traffic conditions, and production rates at the project site.

2. Delivery shall be made with the least possible impedance to normal flow of traffic

and, when necessary, the Contractor shall supply flagmen and/or traffic control devices consistent with state law and the Manual on Uniform Traffic Control Devices (MUTCD), latest edition and the requirements of these specifications.

PART 2 - PRODUCTS A. GENERAL

Aggregate shall be crushed stone consisting of hard, durable particles or fragments of stone, free of flat, elongated, soft, or disintegrating pieces, dirt, or other deleterious matter, and having a percentage of wear not exceeding 50 at 500 revolutions, when tested under AASHTO T-96


(Los Angeles Abrasion Test). In addition, the aggregate shall be free of vegetable matter, clay balls, frozen lumps, or other extraneous or deleterious matter and shall conform to the gradation specification presented below. The liquid limit for the aggregate passing the No. 40 screen must be non-plastic when tested in accordance with ASTM Test Method D-4318.

Aggregate material shall be furnished by Atlantic Richfield as described in Section 02207 Aggregates.

PART 3 - EXECUTION A. SURFACE PREPARATION

No surface material shall be placed upon a frozen, muddy, yielding, or rutted subgrade or gravel surface. Material shall be deposited in a uniform manner approved by Atlantic Richfield Company or the Engineer to ensure the required plan thickness of the base course following spreading and compaction.

Before placing the base course, blade smooth and shape the surface of the underlying subgrade to the cross section shown on the Drawings prior to placing the base course. Check compaction of the subgrade as required in these specifications.

B. PLACEMENT AND SPREADING

1. Mix and place the material in uniform lifts with a maximum 7-inch loose thickness unless otherwise approved. Deposit and spread the material on the prepared subgrade, or on a completed subgrade and progress continuously without interruption. Discontinue operating haul units over the subgrade if the haul units damage the subgrade. Deposit and spread the material in a uniform layer, without segregation, to the loose depth that when compacted, the layer has the specified thickness of 6-inches. Spread the material to distribute the material in a uniform layer. The material may be deposited in windrows mixed and spread as described below. Construct each layer meeting these requirements. Blade smooth and thoroughly compact each layer as specified before placing the succeeding layer.

2. If segregation, moisture or compaction problems exist, or if the material was placed on

the road in windrows, thoroughly blade-mix the material to each layers full depth by alternately blading the layer to the center and back to the edges of the street.

3. Add water before and during the mixing operations when required in the quantity

necessary to prevent segregation of fine and course materials. Use a sprinkler or other water spreading device that provides a uniform water distribution without causing a washing effect of the base material. Obtain Atlantic Richfield approval before use.


C. COMPACTION

1. Subgrade shall be scarified and compacted to a depth of 12-inches prior to placement of base course. The subgrade and the base course shall be compacted to 95% of a standard proctor (ASTM D 698) at plus or minus 2 percent of optimum moisture content.

2. Compact the material the full width by rolling with suitable tamping equipment or

smooth drum power rollers. Correct all irregularities or depressions that develop during rolling by loosening the material in these places and adding or removing material as required.

3. Perform blading and compacting alternately as required or directed, to maintain a

smooth, even, uniformly compacted surface until the final inspection. At all places not accessible to the roller, compact the base course with suitable mechanical tampers or hand tampers to reach compaction requirements.

4. Provide the watering and rolling required to obtain a minimum field density of 95

percent of the maximum dry unit weight as obtained by ASTM Test Method D 698. No separate compensation will be made for rolling and watering the base course.

D. RESTRICTIONS

In addition to the restrictions imposed by Federal, State, County, and City law on hauling vehicles, the Contractor shall restrict the speed of the hauling units and the weight of loads as he deems necessary to prevent damage to the subgrade, base, and surface courses of public thoroughfares used.

E. SURFACE SMOOTHNESS

1. Owner or the Engineer will provide field surveys for the contractor to grade to. Blue-top staking will be provided, and finished grades cannot deviate more than 0.1 feet at any point from the staked elevation.

2. If patching of the base course is necessary to meet the tolerances, perform

patching using methods and aggregates approved by OWNER or the Engineer. No compensation for patching will be provided.

F. QUALITY CONTROL/QUALITY ASSURANCE

The Contractor shall provide quality control soil testing and inspection service during construction to assure compliance with the Drawings and Specifications. All such quality control shall be at the expense of, and under the direction of, the Contractor. The Contractor shall be responsible for scheduling all such testing and for repair and retesting


of all deficient areas. Quality Assurance testing shall be performed by Atlantic Richfield Company or the Engineer.

Quality Assurance testing will be provided by Atlantic Richfield Company or the Engineer at a frequency to be determined by Atlantic Richfield Company or the Engineer. If quality assurance testing discovers material placements which do not satisfy the requirements of the Drawings and Specifications, all costs and expenses associated with said testing will be charged to the Contractor and the repair of all deficiencies shall be at the expense of the Contractor.

1. Contractor Quality Control Testing and Inspection

a. Subgrade and Base Course Compaction Control.

Contractor shall perform quality control field density tests in accordance with ASTM D 2922 and ASTM D 3017 for the subgrade and base course at a minimum frequency of two compaction tests for the each 50 cubic yards of base course. Contractor shall perform laboratory "Proctor" tests for the base course aggregate for each change in gradation within the specified envelope.

If, in the opinion of the Atlantic Richfield representative, or based upon

testing service reports and inspection, subgrade or base course aggregate has been placed below the specified density, the Contractor shall repair or replace the deficient materials, provide additional compaction, and retest the soil compaction at no additional cost to Atlantic Richfield Company.

b. Gradation Control

The Contractor shall verify that the base course gradation satisfies the gradation requirements of the Specifications. Gradation tests shall be conducted at the discretion of the Atlantic Richfield representative. Materials which do not satisfy the gradation requirements of the Specifications shall be removed and replaced with acceptable materials.

c. Aggregate Quality

Base course aggregate shall be from an approved existing gravel pit or a new gravel pit if it can be demonstrated by submission of applicable test results that the aggregate satisfies the quality requirements set forth in the Specifications. Previous test results from existing gravel pits will be acceptable, provided they are applicable to the portion of the pit that will be used to produce the aggregate. If the pit is new, or if a new area of the gravel pit will be opened to produce the aggregate, a complete set of aggregate suitability tests will be required prior to use on the site.


G. PROTECTION

Hauling equipment may be routed over completed portions of the base course, provided no damage occurs and provided that such equipment is routed over the full width of the base course to avoid rutting or uneven compaction. If the Contractor is negligent in monitoring hauling operations and creates yielding, rutting or uneven compaction, the Atlantic Richfield Company or the Engineer may stop all hauling over completed or partially completed base course when, in his opinion, such hauling is causing damage. Any damage resulting to subgrade or base course courses from equipment shall be repaired by the Contractor at his own expense.

H. MAINTENANCE

The Contractor shall perform all maintenance work necessary to keep the base course in a condition satisfactory for placement of subsequent lifts. The surface shall be kept clean and free from foreign material. The base course shall be properly drained at all times. If cleaning is necessary, or if the graded surface becomes disturbed, any work or restoration necessary shall be performed at the expense of the Contractor.



SECTION 02521 BITUMINOUS MATERIALS

PART 1 - GENERAL A. WORK INCLUDED

The work covered by this section consists of supplying all necessary materials, labor, tools, equipment, and incidentals for the application of bituminous materials needed for tacking the asphalt pavement and supplying the penetration grade asphalt for the asphalt cement as specified herein and indicated on the drawings.

B. RELATED WORK

1. Section 02515 – Base Course 2. Section 02525 - Asphalt Pavement

C. QUALITY CONTROL

Testing and Inspection Service: The Contractor will engage testing and inspection services for quality control testing during construction in order to assure compliance with the Specifications. Retesting of failed tests shall be the responsibility of the Contractor. Any materials that fail quality control or quality assurance testing shall be removed from the project. No compensation for such materials will be provided.

D. SUBMITTALS Certificates of Compliance will be submitted to Engineer prior to application of any

Bituminous Materials. Tests required include a penetration or viscosity test for every load supplied, with a complete test series for every five loads furnished. Each test report must include a temperature viscosity curve. At least one complete series of tests will be required for every type of asphalt furnished. One copy of each test report shall be furnished to the Engineer.

E. PRODUCT HANDLING

The bituminous materials shall be delivered to the area to be surfaced in such manner that the temperature at the time of application will not be less than that specified.

Sufficient trucks shall be utilized to assure a continuous operation with consideration given to haul distance and traffic conditions.

Delivery shall be made with the least possible impedance to normal flow of traffic and, when necessary, the Contractor will supply flagmen and/or traffic control devices consistent with state law and the Manual on Uniform Traffic Control Devices (MUTCD),


latest edition. PART 2 - PRODUCTS A. MATERIALS

1. Bituminous Materials: The bituminous materials to be used for this project shall comply with the specifications listed on Table 02521-1:

TABLE 02521-1 BITUMINOUS MATERIALS SPECIFICATIONS

TYPE AND

GRADE

SPECIFICATION USE

Asphalt Cement Penetration Grade 85-100

AASHTO M-20 TABLE 1

Hot Plant Mix Bituminous Pavement

Emulsified Asphalt, SS-1, CSS-1. SS-1h or CSS-1h

(Anionic) AASHTO M-140 Modification (Cationic) AASHTO M-208 Modification

Tack Coat

PART 3 - EXECUTION A. QUANTITIES OF MATERIALS

The approximate amount of materials per square yard and the application temperatures for the bituminous surface treatment shall be as shown on Table 02521-2. The exact amounts to be used shall be determined by Atlantic Richfield Company or the Engineer.

TABLE 02521-2 MATERIAL QUANTITIES AND APPLICATION TEMPERATURES

MATERIALS

QUANTITY APPLICATION

TEMPERATURES A.C. Grade 85-100

To be determined by Contractor's job-mix formula

To be determined by Contractor's job-mix formula.

Tack Coat - Emulsified Asphalt - SS-1, CSS-1, SS-1h, or CSS-1h

0.25 lbs. / Sq. Yd. 75 - 130 F.


B. WEATHER LIMITATIONS:

1. Aggregate shall be clean and dry for AC, MC, SS-1 and CSS-1 applications. The pavement shall be free of surface moisture during the Contractor’s operating periods.

2. The application of any bituminous material will not be permitted when the

atmospheric temperature is less than 50F and Atlantic Richfield Company or the Engineer may require the Contractor to delay the application of bituminous material until the atmospheric and pavement surface conditions are satisfactory. No bituminous material shall be placed which cannot be cared for during daylight hours. Do not place on a wet surface, or on an unstable roadbed.

C. EQUIPMENT AND ORGANIZATION:

1. Each unit required in the execution of these specifications shall be under the continuous supervision of a competent superintendent thoroughly experienced in this type of work. Experienced operators will be required on all equipment used in hauling and applying bituminous material and aggregates.

2. All equipment necessary to perform this work properly shall be on the project site

and proved capable of satisfactory operation by placing test strips whenever requested by Atlantic Richfield Company or the Engineer.

3. The following equipment will be the minimum required for this type of

construction, and additional machinery shall be secured if it is necessary to fulfill the conditions of these specifications or to complete the item within the time specified. One pressure distributor for bituminous material with a minimum 1000 gallon capacity insulated tank, internally heated, with a sprayer bar at least 9 feet long, capable of 1-foot incremental length adjustments up to 16 feet, having a vertical nozzle adjustment capable of maintaining a preset height above the road surface or equivalent equipment. Use spray bars and flat slotted nozzles designed to not clog during intermittent operation and provide positive cutoff of the bituminous material. Use positive acting flow control valves to produce a uniform, unbroken spread of bituminous material. Remove or repair distributors not uniformly distributing the bituminous material. Assure the distributor has devices and charts to provide for accurate, rapid determination and quality control of the bituminous material application. The distributor must have a pressure pump, pressure gauge, thermometer well and thermometer, and a calibrated fluid content gauge.

4. The distributor shall have pneumatic tires of such width and number that the load

produced on the pavement surface shall not exceed 650 pounds per inch of tire width and it shall be designed and operated so that bituminous material at even heat may be applied uniformly on variable widths of surface at readily controlled rates from 0.05 to 2.0 gallons per square yard. The bituminous material shall be


applied within a pressure range of 25 to 75 pounds per square inch and with an allowable variation from any specified rate not to exceed 5%.

D. APPLICATION OF BITUMINOUS MATERIAL:

1. Bituminous material shall be applied upon the properly prepared surface at the rate and temperature specified using the pressure distributor to obtain uniform distribution at all points. Apply the bituminous material with a maximum allowable variation of 0.02 gallons per square yard from the specified application rate.

2. Do not work when rain, wind, or temperatures would prevent obtaining the

specified results. Uniformly apply the bituminous material at the specified rates and temperatures and provide uniform surface cover and true lines. Longitudinal joints may be from 6 to 10 inches wide but not overlap at the application ends. Prevent lapping at transverse joints by inserting a drip pan under the nozzles if necessary. Before continuing the application, spread protective sheets over the treated surface on the cover aggregate to provide bituminous coverage at the joint.

3. Re-apply bituminous material at joints where the uncovered bituminous material

has set and will not bond the aggregate at Contractor’s expense. END OF SECTION 02521


SECTION 02525 ASPHALT PAVEMENT

PART 1 - GENERAL A. SECTION INCLUDES

This section covers preparation and overlaying of areas or portions of areas with asphalt pavement as shown on the plans or as directed by the Atlantic Richfield Company or the Engineer.

B. RELATED WORK

1. Section 02515 – Base Course 2. Section 02521 - Bituminous Materials

C. REFERENCES

ASTM D-75 Standard Practice for Sampling Aggregates ASTM D-420 Recommended Practice for Investigating and Sampling Soil and Rock ASTM D-421 Standard Practice for Dry Preparation of Soil Samples for Particle

Size Analyses and Determination of Soil Constants

ASTM D-2726 Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Saturated Surface Dry Specimens

ASTM D-3666 Evaluating and Qualifying Agencies Testing and Inspecting

Bituminous Paving Mixtures

ASTM D-4318 Standard Test Method for Liquid Limit, Plastic Limit, and Plasticity Index of Soils.

ASTM C-136 Sieve Analysis of Fine and Coarse Aggregate

AASHTO T11 Amount of Material Finer than No. 200 Sieve in Aggregate AASHTO T165 Effect of Water on Cohesion of Compacted Bituminous Mixtures AASHTO T176 Sand Equivalent Value of Soils and Fine Aggregate

AASHTO T245 Resistance to Plastic Flow of Bituminous Mixtures using Marshall Apparatus


MT-309 Determining the Percent of Adhesion of Bituminous Materials to

Aggregate D. SUBMITTALS

1. Certificates: Submit certificates of compliance with specifications for all asphalt material and aggregates signed by both the material producer and the Contractor.

E. PRODUCT HANDLING

1. Delivery and Asphalt Mixture: The mixture shall be delivered to the area to be paved in such a manner that the temperature at the time of dumping into the spreader will not be less than that hereinafter specified.

Each truck shall be capable of being equipped with a cover of canvas or other suitable material of such size as to prevent unnecessary heat loss and to protect the mixture from the weather as necessary. Any loads that are wet due to rain will be rejected. Trucks shall have tight, clean, smooth metal beds, coated with an Atlantic Richfield Company or the Engineer approved material to prevent adhesion of the mix to the truck bed. Deliveries shall be made so that spreading and rolling of all the mixture prepared for a day's work can be completed during daylight hours, unless adequate (approved) artificial light is provided. Delivery shall be made with the least possible impedance to the normal flow of traffic and, when necessary, the Contractor shall supply flagmen and/or traffic control devices consistent with state law and the Manual on Uniform Traffic Control Devices (MUTCD), latest edition.

F. SCHEDULING OF WORK

The Contractor shall work with the Atlantic Richfield Company or the Engineer to schedule the work covered in this section to minimize inconvenience to the Owner's operation on the site. The Contractor's schedule shall be approved by the Atlantic Richfield Company or the Engineer.

PART 2 - PRODUCTS A. MATERIALS

1. Hot Plant Mix Bituminous Pavement:

a. Aggregate: The aggregate shall be supplied by the Contractor. The aggregate shall consist of crushed stone, crushed gravel, or sharp-edged


natural sand with or without other inert finely divided particles, free from clay balls, organic matter, and other deleterious substances. The aggregates shall not contain more than 8 percent, by weight, of flat or elongated pieces. The crushed aggregate shall have a percentage of wear of not more than 50 for 500 revolutions, and a sulfate soundness loss of not more than 12 percent. In addition the aggregate shall be non-plastic.

All reference to coarse aggregate is that portion retained on the No. 4 sieve. The crushing of the aggregate shall result in a product in which the coarse aggregate shall have at least 70 percent by weight of particles with one or more mechanically fractured faces.

The fine aggregate, including any blended filler, shall have a liquid limit and a plasticity index of not more than 25 and 6, respectively, when tested in accordance with ASTM D-4318.

Assure that composite aggregate is free from adherent films of clay or other matter that prevents thorough coating with asphalt material. Assure the aggregate will retain a thorough coating of the asphalt material to be used in the work when in contact with water. If the aggregate cannot meet this requirement, treat the aggregate or the asphalt material with an additive approved by Atlantic Richfield Company or the Engineer that will insure asphalt film retention in the presence of water. The fine or coarse aggregate, or a composite mixture, shall not show detrimental stripping when tested under Montana Test Method MT-309. If more than 5% stripping occurs, the aggregate will be rejected. Addition of an anti-strip agent to the asphalt at the refinery to reduce the percentage of stripping to less than 5% will require the approval of Atlantic Richfield Company or the Engineer. There will be no additional compensation for the addition of the anti-stripping agent. In addition, the conditions of paragraph 2.01-A-4 shall apply to anti-stripping agents.

b. Filler: If filler, in addition to that naturally present in the aggregate, is

necessary, it shall consist of stone dust, loess, Portland cement, or other approved mineral matter. The filler shall meet the requirements of AASHTO M17.

c. Bituminous material: The type, grade, controlling specification, and

mixing temperature for the bituminous material is identified in Section 02521 of these Specifications (Bituminous Materials).

d. Composition of mixtures: The bituminous plant mix shall be composed of

a mixture of aggregate, filler if required, and bituminous material. The several aggregate fractions shall be sized, uniformly graded, and combined in such proportions that the resulting mixture meets the grading requirements of the job-mix formula. The mix shall be designed by the


Marshall Method in accordance with the most current edition of the Asphalt Institute MS-2 Manual and shall meet the requirements listed on Table 02525-1.

TABLE 02525-1 PLANT MIX SPECIFICATIONS

ASTM D 1559

Number of blows each side of specimen 75 Stability (min) 1,500 (min.) Flow (hundredths of an inch) 8 - 16 Asphalt Content 4 - 8 Percent voids (Marshall) 3 to 5 Percent voids (in place) 3 to 7 Percent void in mineral aggregate See Note

Below

Note: For 1-inch nominal particle size: Minimum VMA is 12% For ¾-inch nominal particle size: Minimum VMA is 13% For ½-inch nominal particle size: Minimum VMA is 14%

If the index of retained strength of the specimens of composite mixture, as determined by ASTM D 1075, is less than 75, or the dry stability is less than 200 psi, the aggregates shall be rejected or the asphalt shall be treated with an approved anti-stripping agent. The amount of anti-stripping agent added to the asphalt shall be sufficient to produce an index of retained strength of not less than 75 with a minimum dry stability of 200 psi. If an anti-stripping agent is required, it shall be provided by the Contractor at no additional cost.

e. Job mix formula: At least ten (10) days prior to the time the Contractor

expects to begin paving operations, he shall submit for Atlantic Richfield Company or the Engineer approval, a job-mix formula for each mixture to be supplied for the project. The job mix formula with the allowable tolerances shall be within the master range specified. The job-mix formula for each mixture shall be in effect until modified by Atlantic Richfield Company or the Engineer. The job-mix formula for each mixture shall establish a single percentage aggregate passing each required


sieve size and a single mixing temperature. The percentage of bituminous material to be added will also be designated by the job-mix design.

The gradations listed in Table 02525-2 represent the limits that shall determine suitability of aggregate for use from the sources of supply. The job mix gradation shall be within the limits designated in the Table, shall be well graded from coarse to fine, and shall not vary from the low limit on one sieve to the high limit on the adjacent sieves, or vice versa.

The bituminous content of the mixture shall be calculated on the percentage basis by weight of the total mix. The gradation of the aggregate for the Hot Plant Mix Bituminous Pavement shall be as specified in Table 02525-2.

TABLE 02525-2 HOT PLANT MIX BITUMINOUS PAVEMENT

SIEVE SIZES (SQUARE OPENINGS)

3/4-INCH MAXIMUM CUMULATIVE

PERCENT PASSING (BY WEIGHT)

¾" 100

½" 80-100

No. 4 45-65

No. 10 32-45

No. 40 12-25

No. 200 4-10

After the job mix formula is established, all mixtures furnished for the project shall conform with the following tolerances:

Passing 3/4" Sieve + 0% Passing 1/2" to No. 4 Sieves + 7% Passing #10 Sieve + 6% Passing #40 Sieve + 4% Passing No. 200 + 1.5% Asphalt Content + 0.4%* Mixing Temperatures + 20F


* This tolerance will be permitted only if the job mix parameter curves indicated that the corresponding Marshall design limits are not exceeded.

Should changes in sources of materials be necessary, a new job formula shall be established before the new material is used. When unsatisfactory results or other conditions make it necessary, Atlantic Richfield Company or the Engineer may require that a new job mix formula be submitted at the Contractor’s expense.

The combined mineral aggregate for the asphalt pavement shall be of such size that the percentage composition by weight, as determined by laboratory sieves, will conform to one of the gradations of Table 02525-2, when tested in accordance with ASTM C 136, ASTM C 117 and ASTM D 2172. The percent of weight for the bituminous material shall be within the limits specified.

B. BITUMINOUS MIXING PLANT

Mixing plants shall be of sufficient capacity and coordinated to adequately handle the proposed bituminous construction but not less than capable of producing 100 tons per hour.

1. Equipment for preparation of bituminous material: Tanks for the storage of

bituminous material shall be equipped to heat and hold the material at the required temperatures. Heating shall be accomplished by approved means so that flames will not contact the tank. The circulating system for the bituminous material shall be designed to assure proper and continuous circulation during the operating period. Provisions shall be made for measuring quantities and for sampling the material in the storage tanks.

2. Feeder for drier: The plant shall be provided with accurate mechanical means for

uniformly feeding the aggregate into the drier to obtain uniform production and temperature.

3. Drier: The plant shall include a drier(s) that continuously agitates the aggregates

during the heating and drying process. The moisture content of the bituminous mixture at the discharge from the mixer shall not exceed 0.5 percent.

4. Screens: Plant screens, capable of screening all aggregates to the specified sizes

and proportions, and having normal capacities in excess of the full capacity of the mixer, shall be provided.

5. Bins: The plant shall include storage bins of sufficient capacity to supply a mixer

operating at full capacity. Bins shall be arranged to assure separate and adequate storage of appropriate fractions of the mineral aggregates. When used, separate


dry storage shall be provided for filler or hydrated lime, and the plant shall be equipped to feed such material into the mixer. Each bin shall be provided with overflow pipes of such size and at such location to prevent backup of material into other compartments or bins. Each compartment shall be provided with its individual outlet gate to prevent leakage. The gates shall cut off quickly and completely. Bins shall be constructed so that samples can be readily obtained. Bins shall be equipped with adequate tell-tale devices that indicate the position of the aggregates in the bins at the lower quarter points.

6. Thermometric equipment: An armored thermometer of adequate range shall be

placed in the bituminous feed line at a suitable location near the charging valve of the mixer unit. The plant shall also be equipped with an approved thermometric instrument placed at the discharge chute of the drier to indicate that temperature of the heated aggregates. Atlantic Richfield Company or the Engineer may require replacement of any thermometer by an approved temperature-recording apparatus for better regulation of the temperature of aggregates.

7. Dust collector: The plant shall be equipped with a dust collector to waste or

return uniformly to the hot elevator all or any part of the material collected. 8. Safety requirements: Adequate and safe stairways to the mixer platform and

sampling points shall be provided, and guarded ladders to other plant units shall be placed at all points where accessibility to plant operations is required. Accessibility to the top of truck bodies shall be provided by a suitable device to enable Atlantic Richfield Company or the Engineer to obtain samples and mixture temperature data. Means shall be provided to raise and lower scale calibration equipment, sampling equipment, and other similar equipment between the ground and the mixer platform. All gears, pulleys, chains, sprockets and other dangerous moving parts shall be thoroughly guarded. Ample and unobstructed passage shall be maintained at all times in and around the truck loading area. This area shall be kept free of drippings from the mixing platform. The Contractor shall comply with OSHA and other applicable local, state, and federal regulations and requirements.

The Atlantic Richfield Company or their authorized Engineer shall have access, at all times, to all parts of the paving plant for checking adequacy of equipment; inspecting operation of the plant; verifying weights, proportions and character of materials; and checking the temperatures maintained in the preparation of the mixtures.

C. EQUIPMENT

The equipment used by the Contractor shall include a self-powered pressure bituminous material distributor, equipment for heating bituminous material, a bituminous paver and rolling equipment.


1. Distributor: The distributor shall have pneumatic tires of such width and number that the load produced on the surface shall not exceed 650 pounds per inch of tire width and shall be designed, equipped, and operated so that bituminous material at even heat can be applied uniformly on variable widths of surface at readily controlled rates from 0.05 to 2.0 gallons per square yard. The material shall be applied within a pressure range from 25 to 75 pounds per square inch and with an allowable variation from any specified rate not to exceed 5 percent. Distributor equipment shall include a thermometer for reading temperatures of tank contents.

2. Pavement Removal: In areas where installation of new asphalt paving will match

to existing pavement, Contractor shall cut in a straight line parallel to the edge of the planned asphalt installation. Cutting of existing asphalt paving maybe completed by the use of a spadebit air hammer, concrete saw, asphalt mill, or similar equipment to obtain a straight square cut.

3. Bituminous Pavers: Bituminous pavers shall be self-contained, power-propelled

units with an activated screed or strike-off assembly, heated as necessary. It shall be capable of spreading and finishing courses of bituminous plant mix material that will meet the specified thickness, smoothness and grade.

The paver shall have a receiving hopper of sufficient capacity to permit a uniform spreading operation. The hopper shall be equipped with a distribution system to place the mixture uniformly in front of the screed. The screed or strike-off assembly shall effectively produce a finished surface of the required evenness and texture without tearing, shoving, or gouging the mixture.

a. Automatic grade and crown control: Machines shall be equipped with an

electronically controlled, motor-operated screed that is capable of automatically controlling longitudinal grade and transverse slope of the leveling course during placing. The longitudinal control shall operate on both string line grade control and on the surface of previously placed paving lanes. The controls shall be so arranged that independent longitudinal grade controls can be operated simultaneously on both sides of the machine or single on either side. The electronic controls shall be arranged so that the machine can be operated with fully automatic, semi-automatic, partial-automatic and all manual control.

The automatic equipment shall be capable of controlling the grade to not less than plus or minus 1/8 inch and the transverse slope to not less than plus or minus 0.1 percent from the controlling grade.

When required by Atlantic Richfield Company or the Engineer, the machine shall be equipped with a leveling ski not less than 30 feet in length to be operated in connection with the automatic grade control.


b. Slope indicator: The machine shall be equipped with a spirit level or other type of slope indicator which will continuously indicate the average transverse slope of the screed. Curvature of spirit level tubes shall be as required to produce a bubble of movement of not less than 1/8 inch for each 0.1 percent change in transverse slope.

4. Rollers: Rollers shall be in good condition, capable of reversing without

backlash, and operating at low speeds to avoid displacement of the bituminous mixture. The number, type, and weight of rollers shall be sufficient to compact the mixture to the required density while the mixture is still in a workable condition. The use of equipment which results in excessive crushing of the aggregate will not be permitted. Rollers shall be equipped with scrapers and water spray bars to keep plant mix material from sticking to rollers. Only water or an Atlantic Richfield Company or the Engineer approved agent will be allowed on any drum to prevent adhesion. Petroleum based products will not be permitted for use.

Vibratory rollers shall be equipped with a variable amplitude and frequency system. The roller shall have vibratory drum with a minimum diameter of 48-inches and a minimum width of 66-inches. The unit static force on the drum shall be 325 pounds per inch and the vibrations of the drum shall be a minimum of 2000 vibrations per minute. The maximum rate of travel shall be 3 miles per hour.

PART 3 - EXECUTION A. SUBGRADE AND LEVELING

1. General: Prior to performing any work specified in this section, the Contractor shall verify the nature and extent of areas designated on the plans to be surfaced. The Contractor shall use a stringline or other approved method to provide suitable controls for the paver.

a. Subgrade surface shall be scarified to a depth of 12-inches and re-

compacted to a minimum of 95% of maximum standard proctor density at a moisture content of plus or minus two percent (+/- 2%) of optimum (ASTM D698).

b. All pavement overlay areas shall have all the cracks filled with a sand

asphalt mixture or other suitable filler, as approved by the Owner or Engineer, prior to installing asphalt overlay.

c. Assure that the area to be paved is true to line and grade and has a dry and

properly prepared surface, and has been approved by Atlantic Richfield Company or the Engineer before starting paving operations. Assure the


surface is free from all loose screenings and other loose or foreign material.

d. Before paving, proof roll the base with equipment having at least one 18

kip single axle load or equivalent. Excavate and replace areas that yield or crack under these wheel loads as directed. This does not replace or relax the base course or subgrade compaction requirements.

e. Paint the vertical surfaces of all surfaces in direct contact with the asphalt

to form a water-tight joint.

2. Tack Coat: Areas to be overlaid shall be tack coated prior to placing asphalt pavement.

a. Weather limitations: The tack coat shall be applied only when the existing

surface is dry, when the atmospheric temperature is 50F and rising or at least 60F when temperature is decreasing and when the weather is not foggy or rainy. The temperature requirements may be waived, but only when so directed by Owner or the Engineer.

b. Application: Immediately before applying the tack coat, the full width of

surface to be treated shall be swept with a power broom and otherwise cleaned as necessary to remove all loose dirt and other objectionable material.

The application of bituminous material shall be made by means of a pressure distributor in the amount of 0.1 gallons per square yard (maximum) of diluted material as directed by Atlantic Richfield Company or the Engineer.

Following the application, the surface shall be allowed to cure without being disturbed for such period of time as may be necessary to develop a tacky consistency. This period shall be determined by Atlantic Richfield Company or the Engineer. The area to which the tack coat is applied shall be no larger than can be paved during that day's work. The surface shall then be maintained by the Contractor until the next course has been placed. Suitable precautions shall be taken by the Contractor to protect the surface against damage during this interval, including any sand necessary to blot up excess bituminous material. All fixtures in the areas to be overlaid shall be protected during paving operations.

B. HOT PLANT BITUMINOUS PAVEMENT The asphalt pavement shall be placed to the grades as shown on the drawings.


1. Weather limitations: Place the asphalt concrete only when the tack coat has cured, when the weather is not rainy and when the atmospheric temperature is 50F and rising or based on Engineer approval. No pavement shall be placed on frozen base course.

2. Application:

a. Before laying the asphalt pavement, the underlying course shall be cleaned

of all loose dirt, clay, or other objectionable material and the prime coat, or the tack coat is applied.

b. The mechanical spreader shall be adjusted and regulated so that the

surface of the course will be smooth and of such depth that, when compacted, it will conform to the cross-section, grade, and contour shown on the drawings.

c. Asphalt mixture that has a temperature of less than 200F shall not be

dumped into the mechanical spreader.

d. Unless otherwise directed, the placing shall begin along the low edge of areas to be paved.

e. The mixture shall be placed to minimize longitudinal joints.

f. Placing of the mixture shall be as nearly continuous as possible.

g. Shovelers and rakers shall follow the spreading machine, adding hot

mixture and raking the mixtures as required to produce a course that, when completed, will conform to all requirements specified herein.

h. Contact surfaces or previously constructed curbs, and similar structures

shall be painted with a thin coat of hot bituminous liquid prior to placing the bituminous mixture.

i. Each day's production shall be squared off for the entire width of the area

being paved in order to eliminate as many cool or cold longitudinal joints as possible unless otherwise specified by Atlantic Richfield Company or the Engineer.

j. The maximum lift thickness shall be 2 inches. A tack coat shall be applied

between lifts. The tack coat between lifts may be waived, at the discretion of Atlantic Richfield Company or the Engineer, if the overlying lift is applied on the same day as the initial lift and the initial lift has been kept clear of vehicular traffic, dust, soil, water, or other material which may affect the bond between asphalts lifts.


3. Compaction: After spreading, the mixture shall be thoroughly and uniformly compacted with power rollers. Rolling of the mixture shall begin as soon as the material will bear the roller without undue displacement or hair checking. Rolling shall commence on low side and continue to the higher side of ribbon.

Furnish the number of rollers necessary to provide the specified pavement density. During rolling, keep the roller wheels moist to avoid picking up the material. Cold longitudinal joints shall be kept to a minimum. These shall be tacked and heated prior to installing adjacent materials.

Initial rolling shall be done longitudinally. The roller shall overlap on successive trips. Alternate trips of the roller shall be of slightly different lengths.

The speed of the roller shall, at all times, be slow enough to avoid displacement of the hot mixture. Any displacement occurring as a result of reversing the direction of the roller, or from any other cause, shall be corrected at once by rakes and fresh mixture.

Rolling shall continue until all roller marks are eliminated, the surface is of uniform texture and true to grade and cross section, and a density of at least 95 percent of the maximum laboratory density specified in the job mix formula is obtained. Compaction shall be obtained prior to initial heat loss, and completed before the temperature of mat drops below 180F.

To prevent adhesion of the mixture to the roller, the wheels shall be kept properly moistened, but excessive water will not be permitted.

In areas not accessible to the roller, the mixture shall be thoroughly compacted with hot hand tampers.

Any mixture that becomes loose and broken, mixed with dirt, or in any way defective shall be removed and replaced with fresh hot mixture and immediately compacted to conform to the surrounding area. This work shall be completed at the Contractor’s expense.

4. Joints:

a. General: The mixture at the joints shall comply with the surface

requirements and present the same uniformity of texture, density, smoothness, etc., as other sections of the course. In the formation of all joints, provision shall be made for proper bond with the adjacent course for the specified depth of the course. Joints shall be formed by cutting back on the previous day's run to expose the full depth of the course; the exposed edge shall be given a light coat of asphalt. The fresh mixture shall be raked against the joint and thoroughly tamped and rolled.


b. Transverse: The placing of the course shall be as continuous as possible. The roller shall pass over the unprotected end of the freshly laid mixture only when discontinuing the laying of the course.

c. Longitudinal: The placing of the course shall be as specified in such a

manner that the joint is exposed for the shortest period possible.

5. Smoothness test: Irregularities which retain water on the surface shall be corrected by removing the defective work and replacing with new material as directed and without additional cost.

C. FIELD QUALITY CONTROL

Quality Control Testing and sampling shall be performed by the Contractor, and all charges shall be paid for by the Contractor. If re-testing is necessary due to test failures, they shall be paid for by the Contractor. Quality Assurance testing will be conducted by Atlantic Richfield Company or the Engineer. Quality control testing shall be at the minimum rate listed below:

In-Place Density and depth check with cores per ASTM D 2726, ASTM D 1188, ASTM D 3203, ASTM D 3665, and ASTM D 979 One core per 250 tons The field density and thickness of the pavement is determined by measuring the cores tested. The actual thickness must be within 1/4-inch of the specified thickness. When the measurement of any core is less than the plan thickness by more than the allowable deviation, the actual thickness of the pavement in this area may be determined by taking additional cores at intervals parallel to the centerline in each direction from the affected location until, in each direction, a core is found which is not deficient by more than the allowable deviation. Areas found to be deficient in thickness by more than the allowable deviation will be evaluated by Atlantic Richfield Company or the Engineer. If Atlantic Richfield Company or the Engineer determines the deficient areas warrant removal, remove and replace the areas with asphalt concrete of the thickness shown on the plans. Additional coring is considered as retesting of failing areas.

D. PROTECTION OF PAVEMENT

After final rolling, no vehicular traffic of any kind shall be permitted on the pavement until it has cooled and hardened and in no case less than six hours time.
