Exhibit_D_Appendix_D-17_Earth_Moving_and_Seeding_Specifications.pdf

INFORMATION ONLY

~ B los 'Alamos N3B Transition Instruction

Title: Blue-Sheet Process Instruction No: T-0005 I Revision: I I Effective Date: 03/08/2018 I Page I of I

Attachment 1 - N3B Blue-Sheet Form

A. Document Number:

ADEM-SPEC-C-31-2000

Revision:

B. Document Title (List name of manual, document, procedure series, or specific procedure):

Environmental Management Specification for Earth Moving

C. Owner/User Group (Check One):

D C.2.1 1 Quality Assurance

D C.2.14. 1 Security

D C.2.12 Records Management D C.2.13 Infrastructure

D C.2.16 Engineering D C.2. 17 ES&H

~ C.2.18 Environmental Remediation

D Other (Describe):

D C.2.19 Water Programs D C.2.20 Waste Program (CH-TRU)

D. Check applicable box(es):

1. ~~cument(s) is accepted "as is" with minor revisions.

2. D Attachment 3 has been initiated for procedure intent change (for future PCR).

3. D Document is not needed for N3B work and will not be accepted.

4. D Document to be placed On-Hold and further evaluated post-transition.

E. Comments:

See N3B Blue-sheeting Terminology Replacement Guide

All Utility Mapping and Locating activities identified in ADEM-SPEC-C-31-2000 will be performed by LANS as discussed in Los Alamos National Security, LLC Service Agreement/Work Authorization (SA WA) - Utility, Road, Transportation, and Planning Services (SAW A# M&O-005).

A rovals:

Blue Sheet Reviewer

Responsible Functional Area Mana er

Name Signature Date

!;;-Uf-/8

RFP-0000297

Environmental Management

Specification for Earth Moving

ADEM-SPEC-C-31-2000, Rev. 4

4 1/29/18 Pc s.

3 12/11/14 BT

2 1/28/14 RB-UC

1 11/27/12 RB-

UC

0 10/2/12 --

Rev Date ADC

ADEM-SPEC-C-31-2000

Rev.4

Added definitions for LANL PE, GV technical representative and Engineer

0,,V of Record. Changed vacuum potholing restriction within PRS.

Revised granular berm fill gradation requirement. Modified subsection on Soil Comoaction and Testina.

Changed gradation of pipe bedding, RER added crushed stone material requirements, added RAP to base course, corrected cross references.

Added granular berm fill material, RER changed berm fill placement and compaction requirements revised cold weather material placement, new tracer wire requirements, added more control over pipe bedding fill material requirements and clarified STR/PIC roles.

Revised material types and berm RER compaction Original Issue BJF

Description Orig.

CL GF

U- _tjjJ

WJF AM

WJF AM

BJF AM

RER AM

Rvw. App.

EARTH MOVING

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Potholing.

B. Grading: Clear, excavate topsoil, grade and dispose of materials at site.

C. Excavation: Excavate, place, and compact earth at site.

D. Trenching: Excavate trenches for utilities and install tracer wire/identification tape.

E. Backfilling.

F. Soil compaction and testing.

1.2 LANL PERFORMED WORK

A. Obtain excavation/soil disturbance permit for Subcontractor.

B. Mark location of known underground utilities and issue the excavation/soil disturbance permit.

C. Document new and existing utility locations. LANL's Mapping and Locating Group will survey locations of new and existing exterior utilities and infrastructure. Refer to Part 3.10.

D. Locate utility shut-off points prior to potholing.

E. Perform an electrical continuity test for each run of tracer wire.

1.3 RELATED SECTIONS

A. ADEM-SPEC-C-32-9219, Seeding

1.4 DEFINITIONS

A. Mechanical Excavation: Use of backhoes, jackhammers, trenchers, and similar powered digging machines; excludes vacuum excavators that are equivalent to hand digging.

B. Utility and Pipe: Any active or inactive buried pipe, duct, conduit, or cable in a primary or secondary utility system. A utility excludes drainage culverts and storm water conveyances.

C. Compaction: The densification of soil, with percent compaction being the ratio (in percent) of the soil measured in-place dry density to the same soil's maximum dry density.

D. Excavation Slope: An inclined surface formed by removing material from below existing grade.

E. Embankment Slope: An inclined surface formed by placement of material above surrounding grade.

F. Granular Berm Fill: Material primarily used to construct storm water berms

ADEM-SPEC-C-31-2000

Rev.4 Page 2 where hydraulic conductivity of the placed material is of lesser concern.

G. Subgrade: The undisturbed earth or the compacted soil layer immediately below areas where some type of excavation, fill material, backfill material, bottom of road pavement sections, foundations or slabs are to be constructed, as shown on the Project Drawings.

H. Structural Fill: Material meeting the requirements of Sectio_n 2.1.D of this specification which is placed primarily under or around structures and supports their loads. Base course material is the preferred material for use as structural fill.

I. Site Grading Fill and Backfill: Soils used primarily in site areas other than under structures or roadways to achieve finish grade.

J. Crushed Stone: Material meeting the requirements of Section 2.1.F of this specification which is primarily used as to protect underlying materials from storm water impacts.

K. Base Course: Material primarily used under roadways as part of the pavement structural section.

L. Berm Fill: Materials specified herein which are primarily used to construct storm water berms where relatively low hydraulic conductivity material properties are desirable.

M. Unsuitable Material: Materials which do not meet the requirements of structural fill or common fill and/or cannot meet compaction requirements.

N. RAP: Recycled asphalt pavement obtained from the excavation area, when properly screened for gradation, may be used below new asphalt road repairs as base course material per Section 2.1.D of this specification.

0. Person in Charge (PIC): For LANL performed work where an STR is not assigned, the PIC is the responsible person directing field services.

P. Project Engineer (PE): For LANL performed work where an STR is not assigned, the PE is the responsible person representing the technical conformance of the work.

Q. LANL technical representative: LANL representative observing material placement, performing sampling, compaction testing in field or laboratory.

R. Engineer-of-record (EOR): The responsible person for the overall design of the work.

1.5 ACTION SUBMITTALS

A. Submit the following:

1. Certifications from an independent testing laboratory that pipe bedding materials meet the specification.

2. Certifications from an independent testing laboratory that base course materials, crushed stone or crushed or screened gravel meet the specification.

3. Certifications from an independent testing laboratory that berm fill material obtained from off-site meet the specification.

4. Certification from an independent testing laboratory that granular berm fill material obtained from off-site meet the specification.

ADEM-SPEC-C-31-2000

Rev.4 Page 3

5. Test reports of field-testing of material compaction.

6. Test reports of field-testing of tracing wire continuity.

7. Catalog data on identification tape, tracing wire test station, and tracing wire.

1.6 QUALITY ASSURANCE

A. When work or portions of work of this Section requires testing, notify LANL Subcontractor Technical Representative (STR) or if no STR is on the project, the PIG 48 hrs. in advance of testing.

B. Ensure compacted fills or backfills are tested in accordance with Part 3.12 and in compliance before proceeding with placement of next lift.

C. Do not begin any groundbreaking, excavation, fill, or soil disturbance and transfer until known utilities have been marked, and an excavation/soil disturbance permit (EX-ID) has been issued to Subcontractor.

D. Comply with OSHA 29 CFR 1926, Subpart P for excavation and trenching operation.

E. Maintain a copy of EX-ID permit package, potholing plan, competent person excavation logs, and test reports on site.

F. Perform pre-job briefing including EX-ID Permit and associated safety and hazard documentation with workers performing the work. Verify LANL personnel associated with earth work activities are current in Excavation/Fill/Soil Disturbance self-study. Subcontractor performed earth moving verify training required in Subcontractor Exhibits.

G. Ensure that engineering controls and required Personnel Protective Equipment (PPE) are used by workers during work activities to maintain safety, especially during jack hammering. Breaking surface blacktop, curbs, gutters, and sidewalks with a jackhammer does not require dielectric PPE, provided locates have been performed and the LANL STR or PIG (if no STR is on the project) is confident no other unexposed utilities are present in the surface concrete, blacktop, curb, gutter or sidewalk to be removed.

H. Review and maintain the work within the established boundaries of the EX-ID permit.

I. References: This section contains references to standards and codes. These are a part of this section as specified and modified. In case of conflict between the requirements of this section and the listed documents, the requirements of this section shall prevail.

Reference

ASTM D422

ASTM D698

ASTM D1556

ASTM D1557

ADEM-SPEC-C-31-2000

Rev. 4

Title

Test Method for Particle-Size Analysis of Soils

Test Method for Laboratory Compaction Characteristics of Soil Using Standard Effort

Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method

Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort

ASTM D2216

ASTM D2167

ASTM D6938

ASTM D4318

1. 7 SITE CONDITIONS

Test Method for Moisture Content of Soils

Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method

Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)

Test Method for Liquid Limit, Plastic Limit and Plasticity Index of Soils

A. Areas to be backfilled are free of debris, snow, ice, and water, and surfaces are not frozen. Backfill material shall be in a thawed state before being placed, mixed, or compacted. Compensatory measures can be used and should be described in a cold weather protection plan and approved by the STR or PIC (if no STR is on the project) and the LANL PE.

PART 2 PRODUCTS

2.1 MATERIALS

A. General: Perform appropriate and specified laboratory tests as necessary to ensure that fill and backfill materials proposed for use on this project meet all requirements specified herein.

1. "Or approved equal" is always implied after a brand name, patented process or catalog number. The Subcontractor may substitute any brand or process approved as an equal by the LANL PE through the submittal process. The only exception is where "no substitution" is specified. See General Provision "Material and Workmanship".

2. All borrow and fill material shall be provided by the Subcontractor. The LANL STR or PIC (if no STR is on the project) in consultation with LANL FOO Utilities & Infrastructure (U&I) may approve a borrow/spoils area provided the submittals for qualification of material type are in conformance with this Part 2 of this specification, and have been reviewed and approved by the LANL PE.

3. Granular non-plastic to low plasticity materials may contain minor (less than 2 percent) deleterious materials such as clay balls, unless otherwise restricted by an applicable ASTM Standard.

B. Topsoil

Excavated soil material, usually the upper few inches at LANL, containing silts, clays and organics which contain less than 10 percent by volume of roots/rocks larger than 2 inches, subsoils, and debris.

C. Site Grading Fill and Backfill

1. General: Excavated material may be used for site grading fill and/or backfill including under sidewalks. Site materials which have the required properties may be used. If sufficient materials are not available at the site or if the site materials do not have the specified properties, use materials from off-site

ADEM-SPEC-C-31-2000

Rev. 4 Page 5 borrow areas. Off-site materials may be mixed with on-site materials in the proportions necessary to meet the requirements of this section. Arrangements necessary for the use of borrow areas are the responsibility of the Subcontractor.

2. Site grading fill shall be clean material, having less than 2 percent of vegetation, debris and other deleterious materials and shall meet the following requirements as determined by ASTM D422 except as otherwise approved by the LANL STR or PE (if no STR is on the project).

Sieve Size

2.0 inch ¼ inch No.200

Percent Passing

40-100 25-45

Fill shall have a Plasticity Index (Pl) of not more than 10. Testing shall be in conformance with ASTM D4318, unless waived by the LANL STR or PE (if no STR is on the project).

D. Base Course

1. Provide base course and aggregate composed of materials consisting of crushed stone, crushed or screened gravel, sand, RAP, or a combination of such materials. Provide base course and aggregate free from vegetable matter and other deleterious materials, including silt and clay balls. Ensure that at least 50 percent of the materials on or above the No.4 sieve have at least two fractured faces. Maximum LL of 25 and maximum Pl of 6, per ASTM D 4318. When using RAP the sieve size may be increased to 1.5 inches passing 100% and in accordance with ASTM D 4718 in conjunction with

ASTM D 1557.

2. Base course aggregate shall conform to the following gradation:

Sieve Size

1.0 inch ¾ inch No.4 No. 10 No. 200

E. Embankment Fill

Percent Passing

80-100 30-60 20-45 3-10

1. Excavated on-site or imported material from other LANL properties usually consisting of, but not limited to, crushed luff. Blending to meet material requirements is acceptable. Material shall have a Pl greater than 7 and shall contain less than 2 percent organic matter, rocks or other deleterious matter which might impede compaction or cause zones of high permeability.

F. Berm Fill

1. Excavated material" obtained from on site may be used for berm fill. If sufficient materials are not available on site or if on-site materials do not have the specified properties, materials from an off-site borrow area may be used. Off-site materials may be mixed with on-site materials in the proportions necessary to meet the requirements of this section.

2. Berm fill shall consist of any on-site or imported clean material, containing less than 2 percent organic material, debris and other deleterious materials and

ADEM-SPEC-C-31-2000

Rev.4 Page 6 shall meet the following gradation requirements as determined by ASTM D422 except as otherwise approved by the LANL STR or LANL PE.

Sieve Size

2.0 inch ¼ inch No. 10 No. 200

Percent Passing

75 -100 60-85 30-45

The fraction passing the No. 200 sieve shall not be greater than 0.667 of the fraction passing the No. 40 sieve.

Berm fill shall have a Pl between 10 and 20. Testing shall be in conformance with ASTM D4318.

3. For material manufactured through mixing or blending, perform conformance testing on a minimum of every 200 tons, or when the parent material has changed, whichever occurs first.

G. Granular Berm Fill

1. Granular berm fill shall be produced from mixing base course aggregate (see 2.1.D) with clay, containing less than 2 percent organic material, debris and other deleterious materials.

2. Granular berm fill shall meet the following gradation requirements as determined by ASTM D422 except as otherwise approved by the LANL STR or PE to obtain the required gradation. Material may be mixed on or off-site:

Sieve Size

2.0 inch

1.0 inch ¼ inch No. 10 No.200

Percent Passing

98-100 65-80 45-70 21 -35

The fraction passing the No. 200 sieve shall not be greater than 0.667 of the fraction passing the No. 40 sieve.

3. For material manufactured through mixing or blending, conformance testing must be performed a minimum of every 1000 tons, or when the parent material has changed, whichever occurs first.

H. Crushed Stone

1. Provide crushed stone and /or crushed or screened gravel free of any organic or deleterious substance and having 100 percent passing 1 inch sieve and O percent passing the 3/8 inch sieve.

2.2 UTILITY TRENCH BED AND FILL MATERIALS

A. Provide clean sand for pipe bedding material free of any organic or deleterious materials and having 100 percent passing 3/8 inch sieve and 0-10 percent passing No. 100 sieve.

B. Provide fill and backfill material consisting of non-plastic granular soils having less than 2 percent organic or other deleterious materials having a maximum particle size of 2 inches.

C. Warning Tape

ADEM-SPEC-C-31-2000

Rev.4 Page 7

1. Use non-detectable plastic warning tape consisting of high visibility, color coded, continuously printed, inert fiber reinforced polyethylene for direct burial service.

2. Provide tape to the following criteria:

a. Minimum overall thickness: 4.0 mils

b. Minimum tensile strength: 1500 psi

C. Width: 6 inches

3. Refer to trench detail on Drawing for warning tape color.

4. Manufacturer: Bradley, Seton Name Plate Co., etc.

D. Tracer Wire: #12 AWG copper clad steel, insulation of HOPE minimum 30 mil thickness rated for direct burial. Insulation color shall meet the AWPA color code for buried utilities.

1. Manufacturer: Copperhead Industries, Pro-Line Safety Products.

E. Tracer Wire Test Station

1. Manufacturer: C.P. Test Services, Model-Glenn Test Station

2. Test Station: Plastic pipe, cast iron cover, 2-point terminal box.

PART 3 EXECUTION

3.1 INSPECTION

A. Verify stockpiled fill to be reused is approved by LANL STR or PE (if no STR on project).

B. Verify areas to be backfilled are free of debris, snow, ice, or water and surfaces are not frozen.

3.2 PROTECTION

A. Preserve staking, marking, or other designation until the designation is no longer needed for permitted work. If marking is removed or no longer visible, notify LANL STR or PIC {if no STR on project). The LANL STR or PIC (if no STR on project) will contact LANL's Mapping and Locating Group to revalidate the excavation/soil disturbance permit by localing and marking the utility again.

B. Protect existing structures from equipment and vehicular traffic.

C. Maintain excavation free of standing water.

D. Notify LANL STR or PIC (if no STR on project) of unexpected subsurface conditions and discontinue affected work in area until notified to resume work.

E. Protect bottom of excavations and soil adjacent to and beneath foundations from frost.

F. Where possible, grade top perimeter of excavation to prevent surface water run-off from entering the excavation.

G. In areas of high foot or vehicular traffic, barricades shall be erected around the excavation area before beginning work activities to prevent accidental entry into the area.

H. Protect disturbed soils, drainage ways and watercourses against soil erosion

ADEM-SPEC-C-31-2000

Rev. 4 Page 8 and sedimentation by employing Best Management Practices (BMPs) as identified in EX-ID comments, shown on the drawings or identified in the Storm Water Pollution Prevention (SWPP) Plan and approved by LANL STR or PE (if no STR on project). Remove any temporary BMPs at the close of the project.

I. Approved BMPs shall be in place per SWPP plan before soil-disturbing work begins.

J. Stabilize all disturbed areas.

3.3 PREPARATION

A. Identify required contours and data.

B. Notify LANL STR or PIC at least 15 working days prior to startup of construction to have LANL's Mapping and Locating Group identify known underground utilities and stake and flag locations. If a conflict exists between location of such obstacles and proposed work, promptly notify LANL STR or PIC (if no STR on project) and arrange for relocations. Proceed in same manner if a rock layer or any other unforeseen conditions encountered underground make changes advisable.

C. When necessary, compact subgrade surfaces to the same density requirements used for the overlying material being placed as fill or backfill.

Remove unsuitable and unstable subgrade material.

D. In rock cuts or fill areas, the top of the rock cut elevation shall be considered to be the same as top of subgrade. Fill or backfill material, including base course but excluding berm or embankment fill may be placed directly on top of competent rock without further processing of the rock (i.e. scarify and compaction) provided that pockets in the rock are graded to drain before fill, backfill, or base course is placed. Any fill placed on top of competent rock needed to bring the top of subgrade to required elevation shall be compacted in accordance with subgrade requirements.

E. Exposed rock subgrade under berm or embankment fill areas shall be scarified prior to placement of the initial berm or embankment fill lift in order to bond the two materials together. Compaction testing on this bond layer shall be waived.

3.4 WORKING WITHIN 5 FEET OF UTILITIES

A. Stop work and notify the LANL STR or PIC (if no STR on project) when an unmarked utility is encountered. The LANL STR or PIC (if no STR on project) shall contact LANL's Mapping and Locating Group so the site can be re examined by Utility Locators.

B. If an underground utility is damaged or severed during excavation, immediately notify LANL STR or PIC. LANL STR or PIC (if no STR on project) will take immediate action to secure the area, notify the agency responsible for the utility so that the damaged section can be isolated, repairs initiated and other notifications made as required.

C. Whenever practical, utilities shall be de-energized, isolated, and tagged-out.

The decision not to de-energize shall be made by LANL STR or PIC (if no STR on project) and Facility Operations Manager as appropriate.

D. Do not use mechanical excavating equipment within 5 feet of a marked, non potholed utility. Mechanical excavation may commence within 5 feet of the underground utility only after the utility has been potholed, exposed, and well-

ADEM-SPEC-C-31-2000

Rev.4 Page 9 marked and the Subcontractor is confident that there are no unexposed utilities in the excavation area.

1. Exception: Mechanical excavating equipment may be used where known utility line depths and/or site conditions exceed limitations of hand or vacuum excavation. For purposes of this exception, excavate pothole perpendicular to surface locate markings for 2 feet on each side of marking to a predetermined depth. Mechanical excavation may proceed to within 18 inches of bottom of potholes under this exception. When deemed necessary, Subcontractor will ask LANL STR or PIC (if no STR on project) to contact LANL's Mapping and Locating Group for consultation, checking of existing locate marks and remarking.

E. Accomplish mechanical excavation at a distance no closer than 18 inches vertically and horizontally to potholed non-fully-exposed utility lines.

F. Fully-exposed underground utilities shall be protected, supported, or removed and reinstalled as necessary to protect employees and the utility.

1. If approved by LANL STR or PIC (if no STR on project), powered excavation equipment may be used closer than 18 inches to any fully-exposed utilities provided that these are marked/indicated with a prominent, tall flag-on-pole, plank, or other highly visible object so the equipment operator can clearly see their locations and avoid contact. Prior to such excavating, mark and obtain approval using Attachment 1, Utility Protection Plan Form. Subcontractor shall complete the Utility Protection Plan and clearly indicate the limits of excavation/locates, utilities located, each pothole location, and description of installed marking/flagging measures. More than one form may be required for clarity.

G. Exercise care while hand excavating adjacent to utility line since hand tools such as shovels, picks, and digging bars can damage the utility line.

H. During machine excavation, have a spotter in place to actively monitor the positioning of the equipment.

I. Hand-excavate obstructions (i.e., guy wires, anchors, bollards, fence posts, etc.) to be removed to determine their relationship to existing marked utilities prior to removal.

3.5 POTHOLING

A. Prior to potholing the LANL STR or PIC (if no STR on project) will notify LAN L's U&I Group to locate utility shut-off points. U&I Group will ensure the shut-off points are field verified and determined operable.

B. Pothole where existing buried utility lines are inside, or within 5 feet outside of excavation permit boundary limit.

C. Accomplish potholing by hand excavation or through use of vacuum potholing equipment. The use of vacuum potholing equipment is only permitted within the boundary of a Potential Release Site (PRS) with prior approval using the EX-ID process.

D. Pothole at vertical and horizontal utility angle points, at excavation boundary limit, and as needed. Provide additional pothole where utility depths are unknown or are in sloped work areas where utility depths may vary.

E. When unknown utility lines are marked and hand or vacuum excavation has

ADEM-SPEC-C-31-2000

Rev. 4 Page 10 gone 1 foot deeper than required and 3 feet to the left and right of a locate mark without finding the utility, stop excavating and contact the LANL STR or PIC (if no STR on project) for consultation and remarking.

F. Manholes or valve boxes may be used as a pothole to verify depths and locations of utilities.

G. Parallel Utilities: Pothole at 50 foot intervals where existing utilities parallel excavation and existing lines are located up to 6 feet outside excavation boundary. Hand or vacuum excavate non-conductive direct burial lines within 2 feet of excavation boundary along their entire length adjacent to excavation boundary, or pothole at 5 foot intervals.

H. Backfill potholes to original or better than condition. Refer to Paragraph 2.2.B.

3.6 GRADING

A. Excavate topsoil from areas to be further excavated or regraded, and stockpile topsoil on site in area designated by LANL STR or PIC (if no STR on project).

Topsoil may be used on areas to receive landscaping and seeding.

B. Remove vegetation, debris, unsatisfactory soil materials, and obstructions from ground surface prior to grading. Properly dispose of material in accordance with LANL requirements.

C. Uniformly grade areas within limits of grading under this Section, including adjacent transition areas.

D. Match final grade in seeded and unpaved areas to match Drawing finish contours.

E. Construct berms and berm features such as spillways to the tolerances shown on the drawings.

F. Construct the subgrade surface elevation to a tolerance of plus or minus 0.1 foot from the specified grade and plus or minus 0.05 foot of the typical cross section, except unlined drainage ditch flow lines shown on Drawing are allowed plus or minus 0.2 foot.

G. Construct the base course to the design depth required and the final surface to a tolerance of plus or minus 0.04 foot within 10 feet.

H. Make changes in grade gradual. Blend slopes into level areas. Prepare finish grade to accept seeding by hand raking or as designated on the sketch, drawing, or-specified by the STR or PIC (if no STR on project).

I. Remove surplus excavated materials from the site. Movement and proper disposal of materials from the site shall be in accordance with LANL requirements.

J. Finished surfaces shall be smooth, compacted, and free from irregularities. In areas where seeding will occur, the finished surface will then be prepared in accordance with ADEM-SPEC-32-9219.

K. Finished grade shall be as specified by the contours ± 0.10 foot unless otherwise shown on a sketch or drawing, except where a local change in elevation is required to match sidewalks, curbs, manholes and catch basins, or to ensure proper drainage. Allowance for topsoil and grass cover, and subbase and pavement thickness shall be made so that the specified thickness of topsoil can be applied to attain the finished grade.

ADEM-SPEC-C-31-2000

Rev. 4 Page 11

L. When the work is at an intermediate stage of completion, the lines and grades shall be as specified ± 0.5 foot to provide adequate drainage.

M. If the soil is to be cultivated or straw is to be incorporated into the surface, rocks larger than 2-1/2 inches in maximum dimension, roots and other debris on the surface of the slope shall be removed and disposed of prior to cultivation or placement of straw.

3.7 EXCAVATING AND TRENCHING

A. Excavate and trench subsoil as required for Work.

B. Cut trenches sufficiently wide to enable installation of utilities to allow inspection. Trenches shall be benched, sloped, or shored to meet OSHA 29 CFR 1926 Subpart P, in particular Appendix A for Soil Classification and Appendix B for Sloping and Benching requirements. Refer to trench detail on LANL Standard Drawings for minimum trench widths.

C. Do not interfere with normal 45 degree bearing splay of a structure foundation during excavation work. When excavating near or under a foundation a New Mexico Licensed Professional Engineer shall approve a support system to stabilize the structure or determine that excavation work will not pose a hazard.

D. Hand trim excavation and leave free of loose matter.

E. Remove lumped subsoil, boulders, and rock.

F. Correct errors in excavation.

G. Take proper precaution, such as shoring, sloping, or using a trench box when working in a trench or excavation. Provide a person who is trained and knowledgeable of soil conditions and safety requirements to make safety determinations.

H. Evaluate excavations 4 feet or deeper (or other excavation where employee exposure can be reasonably anticipated) daily and document by a designated competent person before employees are permitted to enter the excavation.

Document inspections on an excavation condition log.

I. When an oxygen deficiency or hazardous atmosphere could be reasonably expected in trenches over 4 feet in depth, such as excavating near roadways, lift stations, sewer/gas lines, etc., the excavation shall be tested with a calibrated intrinsically safe monitoring device before employees are allowed to enter the excavation. If the atmosphere tests hazardous, then do not enter the excavation or if chemical hazards exist or are created within the excavation, stop work immediately and contact the LANL STR or PIG (if no STR on project).

J. Excavation boundaries shall be adequately marked and barriers installed to avoid inadvertent entry. Excavations that present a possibility of a worker falling to a lower level shall be evaluated by a designated Fall Protection Competent Person for necessary fall protection requirements.

3.8 OVEREXCAVATION

A. Do not excavate below depths indicated on the Project Drawings or below such depths as specified by the LANL PE.

B. Excavation below depths indicated on the Project Drawings that occur shall be restored to the indicated or required depths with suitable compacted structural

ADEM-SPEC-C-31-2000

Rev.4 Page 12 fill material. The type of material used for structural fill for excavation below subgrade will be as approved by the LANL PE.

C. Where the undisturbed condition of natural soils is inadequate for support of the planned construction, the PE may direct over excavation. The excavated space shall be filled to the specified elevation with structural fill.

3.9 CONTROL OF WATER

A. Excavations shall be kept reasonably free from water during construction. The static water level shall be drawn down a minimum of 1 foot below the bottom of excavations to maintain the undisturbed state of natural soils and allow the placement of any fill to the specified density. Disposal of water shall not damage property or create a public nuisance. Hand pumping equipment and machinery in good working condition for emergencies shall be on hand and resources available for its operation. Dewatering systems shall operate continuously until backfill has been completed to 1 foot above the normal static groundwater level.

B. Groundwater shall be controlled to prevent softening of the bottom of excavations, or formation of "quick" conditions. Dewatering systems shall not remove natural soils. Do not excavate below depths indicated on the Project Drawings or below such depths as specified by the LANL PE. Surface runoff shall be controlled to prevent entry or collection of water in excavations.

C. Release of groundwater to its static level shall be controlled to prevent disturbance of the natural foundation soils or compacted fill and to prevent flotation or movement of structures or pipelines.

3.10 DOCUMENTING UTILITY LOCATION

A. Do not cover new or exposed existing utilities until LANL's Mapping and Locating Group has verified that utility locations have been documented by the use of GPS in compliance with LANL standard reference system.

B. Subcontractor Responsibility: Notify LANL STR 5 working days in advance that new and exposed utilities will be ready for location verification.

C. LANL STR Responsibility: Notify LAN L's Mapping and Locating at 665-1051 immediately after being notified by Subcontractor.

3.11 BACKFILLING EXCAVATIONS/TRENCHES

A. Backfill and fill areas to contour lines and elevations shown on the Drawings.

B. Backfill and fill systematically.

C. Place backfill and fill materials in continuous layers not exceeding 8-inches in loose depth.

D. Do not place backfill or fill material over frozen, wet, or spongy subgrade surfaces, including surfaces containing frost or ice. Backfill material shall be in a thawed state before being placed, mixed, or compacted.

E. Recondition, reshape and recompact areas that are damaged by freezing.

F. Avoid placement practices which result in segregation of material particles.

G. Before compacting, moisten or aerate each layer as necessary to provide the required moisture content.

ADEM-SPEC-C-31-2000

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H. Compact each layer to required percentage of maximum density for the area.

I. Compact layers uniformly before a succeeding layer is placed.

J. Do not disturb or damage adjacent structures during compaction.

K. Backfill against structures as follows:

1. Do not place backfill against structure walls prior to verifying the concrete has been properly cured and is of required strength to resist stresses due to backfill.

2. Take care to prevent wedging action of backfill against structures by carrying the material uniformly around the structures to approximately the same elevation in each lift.

3. When unbalanced pressures are likely to develop on walls:

a. Continuously monitor for displacements,

b. Erect shoring to counteract imbalance, if required, and

c. Leave shoring in place until LANL STR or PIC (if no STR on project) approves its removal.

L. Utility Trenches

1. Support pipe and conduit during placement of concrete or fill.

2. Install tracer wire (no splices) directly above buried non-metallic pipes and conduits, ductile iron, and cast iron pipes and terminate at grade within a test station or valve box. If the tracer wire can be continuous, do not cut the wire in a test station or valve box but leave as a slack, uncut loop. Tracer wire shall not contact underground piping.

3. Visually inspect tracer wire prior to backfilling to ensure wire has not been nicked or cut, and that continuous unspliced wire runs between test station terminals.

4. Prior to utility tie-ins, perform an electrical continuity test for each run of tracer wire after backfill is complete. The LANL STR or PIC (if no STR on project) will notify LAN L's Mapping and Locating Group to verify tracer wire continuity and GPS new and existing utility lines.

5. Install non-detectable plastic warning tape 12 inches below finish grade and directly above buried utility pipe or conduit. Visually inspect warning tape prior to backfilling to ensure tape is continuous and not cut.

3.12 SOIL COMPACTION AND TESTING

A. General

1. Control soil compaction during construction to provide the minimum percentage of density specified for each area as determined according to the appropriate method within ASTM D1557, as noted in Section 3.12.B.

2. Where subgrade or layer of soil material must be moisture-conditioned before compacting, uniformly apply water to surface of subgrade or layer material to prevent free water appearing on surface during or subsequent to compacting ope,ations.

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Rev. 4 Page 14

3. Remove and replace, or scarify and air dry, soil material that is too wet to permit compacting to the specified density.

4. The allowable percent variation from optimum moisture is plus or minus 2 percent.

5. When placing fill or backfill in discrete lifts, prior to placing the next lift of soil, scarify the upper surface of the previous lift on which fill is to be placed in order to preclude zones of weakness.

6. Report all failing in-place density tests to the PIC before proceeding with rework or recompaction of fill materials. Failing tests must be rectified to the satisfaction of the LANL PE before placement of additional fill material will be allowed.

B. The paragraphs below identify location and compaction required as a percentage of maximum density and optimum moisture measured using ASTM D1557.

1. Structural Fill, Trench Fill and Backfill (utility or non-utility): Compact fill in lifts not to exceed 8 inch loose thickness to 90 percent of the maximum dry density. When within 2 feet of aggregate base under asphalt or concrete increase compaction to 95 percent.

2. Site Grading Fill and Backfill: Compact site grading fill in lifts not to exceed 8 inch loose thickness to 90 percent of the maximum dry density.

3. Base Course (utility or non-utility): Compact base course placed beneath concrete or asphalt structures, or as a roadway surface, in lifts not to exceed 6 inch loose thickness to 95 percent of the maximum dry density.

4. Pipe Bedding material: Compact to 90 percent of maximum dry density.

5. Crushed Stone: Compact crushed stone by tamping with two passes of hand held impact or vibratory equipment in lifts not exceeding 8 inch loose thickness. Control of moisture content is unnecessary. In place density testing is unnecessary.

6. Embankment Fill, Berm Fill and Granular Berm Fill: Material shall be spread across the fill area in thin lifts and continuously tracked to obtain compaction.

If using compaction equipment such as a sheepsfoot or vibratory roller, lifts should not exceed 8 inches in loose thickness and be compacted with a minimum of 2 passes with compaction equipment. Compact embankment fill and berm fill to 95 percent of the maximum dry density.

C. Subcontractor shall employ an AMRL-accredited independent testing agency to perform field testing of installed products to include compaction and test samples that shall verify quality control requirements and is responsible for the following requirements.

1. Verify fill material to be placed is within the stated specifications, and laboratory testing is complete.

2. Verify that moisture-density relationship, ASTM D1557, for each soil type to be placed is completed.

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3. Determine field density of in-place material in accordance with any of the following methods:

a. Nuclear Method, ASTM D6938.

b. Rubber-Balloon Method, ASTM D2167.

c. Sand-Cone Method, ASTM D1556.

4. Determine field moisture content in accordance with either of the following methods:

a. Nuclear Method, ASTM D6938, or

b. Laboratory Determination, ASTM D2216.

5. Frequency of Tests

a. Visual inspection: Periodic visual inspection of material placement and compaction by the LANL technical representative.

b. Structural Fill, Base Course: A minimum of one test per 2,000 square feet for each lift of compacted fill material or fraction thereof, but not less than 3 tests per 8 inches maximum for each lift.

c. Site Grading Fill and Backfill: A minimum of one test per 20,000 square feet for each lift of compacted fill material.

d. Graoular Berm, Berm or Embankment Fill: For berms higher than 2 feet complete a minimum of one test per 50 lineal feet of berm obtained on fill compacted in the lower half of the embankment height. For the upper half of berm construction, visual inspection of compaction is required by the LANL PE or technical representative. In addition, the compaction test frequency for the entire berm shall be no less than one test for each 200 cubic yards of material placed. For berms less than 2 foot in height, visual inspection of material placement and compaction is required by LANL PE or technical representative.

e. Pipe Bedding Material: For utility trenches, conduct a minimum of one test per 50 lineal feet of trench per 8 inches maximum per lift. For non-utility pipes, such as storm water culverts, conduct a minimum of one test per 400 lineal feet per lift below the bottom of the pipe.

f. Trench Fill and Backfill: For utility trenches, conduct a minimum of one test per 50 linear feet of trench per lift. For non-utility pipes, such as storm water culverts, conduct a minimum of one test per 50 lineal feet per 4 feet of fill under roadways and one test per 400 lineal feet per 4 feet of fill elsewhere.

END OF SECTION

FOR LANL USE ONLY

This project specification is based on LANL Master Specification 31 2000 Rev. 10, dated May 13,2015.

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ATTACHMENT 1

Utility Protection Plan

Complete and receive approval from LANL STR or PIC (if no STR on project) before mechanically excavating within 18" of a fully-exposed underground utility line in accordance with this Specification.

Description of Utility:

Description of Installed Marking/Flagging Measures (e.g:, tall flag-on-pole, plank, etc.):

Sketch:

Submitted by: _________________ (Subcontractor Name/Date)

Witnessed/Approved by:

ADEM-SPEC-C-31-2000

Rev.4

____________ (LANL STR or PIC/Date)

MB Los 'Alamos N3B Transition Instruction

Title: Blue-Sheet Process Instruction No: T-0005 I Revision: 1 I Effective Date: 03/08/2018 I Page 1 of 1

Attachment 1 - N3B Blue-Sheet Form

A. Document Number:

ADEM-SPEC-C-32-9219

Revision:

B. Document Title (list name of manual, document. procedure series, or specific procedure) :

Environmental Management Specification for Seeding

C. Owner/User Group (Check One):

D C.2. 11 Quality Assurance

D C.2. 14.1 Security

D C.2. 12 Records Management

D C.2. 16 Engineering

D C.2. 13 Infrastructure

0 C.2. 17 ES&H

181 C.2. 18 Environmental Remediation

0 Other (Describe):

D C.2. 19 Water Programs 0 C.2.20 Waste Program (CH-TRU)

D. Check applicable box(es):

1. IZI Document(s) is accepted "as is" with minor revisions.

2. D Attachment 3 has been initiated for procedure intent change (for future PCR).

3. • Document is not needed for N3B work and will not be accepted.

4. D Document to be placed On-Hold and further evaluated post-transition.

E. Comments:

See N3B Blue-sheeting Terminology Replacement Guide

A rovals:

Blue Sheet Reviewer

Responsible Functional Area Mana er

Name Signature Date

1 1/29/18

0 7/31/12

Rev Date

Environmental Management

Specification for Seeding

ADEM-SPEC-C-32-9219, Rev. 1

~ Edited seed mix. Revised wood mulch to GV allow percentage of objectionable G.V u material. Defined rock mulch. Removed - restriction on seedina dates.

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ADC Description Orig.

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SEEDING

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Preparation of seedbed.

B. Seeding.

C. Mulching and erosion control blankets.

D. Watering and maintenance.

1.2 RELATED SECTIONS

A. ADEP-SPEC-C-31 2000, Earth Moving

1.3 ACTION SUBMITTALS

A. Submit the following in accordance with project submittal procedures:

1. Catalog data, including sources of supply for amendments, mulch, tackifier, fertilizer and erosion control blankets.

2. Certification substantiating that material complies with specified requirements. Submit certified seed bag tags and copies of seed invoices identified by project name.

3. Installation instructions, including proposed seeding schedule. Coordinate with specified maintenance periods to provide maintenance from date of final acceptance. Once schedule is accepted, revise dates only with LANL Subcontractor Technical Representative (STR) or Person-in-Charge (PIC) approval after documentation of delays.

1.4 QUALITY ASSURANCE

A. Subcontractor Qualifications:

1. Perform work by a single firm experienced with the type and scale of work required and having equipment and personnel adequate to perform the work satisfactorily.

B. Material Quality Control:

1. Provide seed mixture in containers sealed and labeled by seed dealer.

Container label shall show origin of seed and pure live seed (PLS) content, species and percentages in seed mix; lot number; test information including, purity, germination, percentage seed crop, percentage inert, percentage noxious/restricted weeds; net weight; test date; date of packaging; and location of packaging. The seed dealer may premix the seed, documentation shall be provided the same as if the seeds were sold or bagged separately. Seed analysis shall be no older than five months for seed shipped interstate, and no older than nine months for seed shipped intrastate.

2. Furnish seed labeled in accordance with the requirements offederal seed laws and New Mexico Department of Agriculture seed labeling laws. Such resulting requirements include but are not necessarily limited to: Federal Seed Act and Amendments, rules and regulations established by the United States Department of Agriculture; the New Mexico Seed Law; and all

ADEM-SPEC-C-32-9219

Rev. 1 Page2 resulting regulations or restrictions established by New Mexico State University or other authorized entity.

3. In addition, ensure seed mix and its application comply with the requirements of all other federal and New 'Mexico statutes and regulations governing seeds, plants, and weeds. These requirements include but are not necessarily limited to: the Noxious Weed Control Act and all rules, regulations, or control measures by a noxious weed control district embracing Los Alamos County, New Mexico; and the Harmful Plant Act.

1.5 DELIVERY, STORAGE AND HANDLING

A. Deliver packaged materials in original sealed and labeled containers from seed dealer. Protect materials from deterioration during delivery and while stored at site. Opened or wet seed shall be rejected and returned to the responsible party.

B. Temperature of the seed in storage shall not exceed the supplier's recommended maximum temperature.

C. Store seed off the ground in a dry, covered location that prevents the seed bag from direct contact with water

PART 2 PRODUCTS

2.1 PRODUCT OPTIONS AND SUBSTITUTIONS

Provide all products as shown on design drawings.

"Or approved equal" is always implied after a brand name, patented process or catalog number. The Subcontractor may substitute any brand or process approved as an equal by the specifying Architect/Engineer through the submittal process. The only exception is where "no substitution" is specified. See General Provision "Material and Workmanship".

2.2 SEED

A. Obtain native grass seed. Plant sources from New Mexico or surrounding states are preferred.

B. Obtain shrub and wildflower seed from sources whose origin would ensure site adaptability at LANL. Plant sources from New Mexico or surrounding states are preferred.

C. Develop seed mixture from the following guidelines. Choose a minimum of 5 grass species from the list, with Blue Grama utilized as 1 of the minimum 5 grass species. Should wildflowers be included in the mix, use a ratio of 80 - 90 percent grasses and 10- 20 percent wildflowers. Choose 3 -5 species from the forb and wildflowers list and 1-3 species from the shrubs list. These species are applicable for both undeveloped and urban-interface areas. All seeding operations must include fertilizer.

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NATIVE PERENNIAL MIX

Common Name Scientific Name %of Mix

Grasses

Blue grama* Bouteloua graci/is 30 -40%

Arizona fescuet Festuca arizonica 10 - 15%

Prairie junegrasst Koeleria macrantha 5-10%

Bottlebrush squirreltail* Elymus e/ymoides 15 - 20%

Little bluestemt Schizachyrium scoparium 10 - 15%

Indian ricegrass* Oryzopsis hymenoides 10 - 15%

Mountain bromet Bormus marginatus 10 - 15%

Sand dropseed* Sporobo/us cryptandrus 1 -8%

Slender wheatgrasst Elymus trachycaulus 10 - 15%

Western wheatgrasst Pascopyrum smithii 10 - 15%

Needle and Thread grass* Stipa coma/a 5-10%

New Mexico needlegrass* Stipa neomexicana 10 - 15%

Forbs/Wildflowers

Firewheel Gaillard/a pulchella 2%

Evening primrose Oenothera caespitosa 1%

Gooseberry leaf globemallow Sphaeralcea grossulariafolia 1.5%

Scarlet gilia lpomopsis aggregata 1%

Plains aster Aster biglovii 1%

Western yarrow Achillea millifolium 0.5%

_Fringed sage Artemis/a frigida 1%

Blue flax Unum perenne /ewisii 4%

Scarlet bulgier Penstemon barbatus 2%

Palmer penstemon Penstemon palmerii 2%

Prairie coneflower Ratibida columnifera 1%

Showy golden-eye Heliomerus mu/tif/ora 1%

Purple geranium Geranium caespitosum 5%

Shrubs Any native species <5% *Species particularly suited for especially dry sites tspecies particularly suited for higher elevations (above 7000 ft.)

The seed dealer may premix the seed.

1. Pre-mixed Sources:

a. Plants of the Southwest, "Dryland Blend"

b. Curtis & Curtis Inc, "LANL Stormwater Mix (see table below)

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CURTIS & CURTIS INC LANL STORMWATER MIX

Common Name Scientific Name % of Mix Blue Grama, Hachita Bouteloua nracilis 30% Galleta P/euranhis iamesii 5% Indian Ricearass, Paloma Achnatherum hvmenoides 5% Sand Drooseed Sporobolus crvptandrus 5% Western Wheatarass Pasconvrum smithii 20% Buffaloarass Buch/oe dactvloides 10% Chamisa Chrvsothamnus nauseous 2.5% Four-wina Saltbush Atriolex canescens 2.5% Aoache Plume Fal/uaia paradoxa 5% Llano Estacado Mix 15%

2.3 WOOD MULCH

A. Wood mulch or green-waste mulch shall be free from noxious weeds, or mold;

and less than 0.1 percent by volume of other objectionable material as determined by STR. Size distribution should range in length from 1-inch to 2 inches with <25% exceeding 2-inches in size and <30% being less than 0.25-inches in size. A coarse/shredded material is preferable over a chipped material

2.4 ROCK MULCH

A. Rock mulch shall be angular material 3/8 to 1 inch diameter, exhibit at least one fractured face, and be free of organic material. Apply to a depth of 1 to 3 inches with no bare earth showing.

2.5 HYDRAULIC MULCH/TACKIFIER

A. Provide mulch material consisting of 100 percent virgin wood fibers manufactured expressly from whole wood chips, such as Eco-Fibre, Conwed, etc. Process chips in such a manner as to contain no growth or germination inhibiting factors. Do not produce fiber from recycled material such as sawdust, paper, cardboard, or residue from pulp and paper plants.