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A PORTION OF THE NW 1/4, SECTION 12, T 28 N, R 4 E, WM
<br /> I.SITE PREPARATION AND CLEARING AND GRUBBING b. Excavated material that the Engineer or representative determines to be unsuitable FILL NOTE:
<br /> General Notes >
<br /> shall be stockpiled or disposed of by the Contractor in a manner and location acceptable _
<br /> SUMMARY to the Engineer or Owner representative. FILL WILL CONFORM TO THE DEPARTMENT OF ECOLOGY'S J
<br /> A. This section describes general requirements for site preparation and clearing and grubbing. 1. All earthwork and grading on Lots 1,2,and 3,including construction of the working pad,on Lots 1,2, GUIDELINES FOR UNRESTRICTED LAND USE AND FOR INERT
<br /> B. Verify all lines,limits and grades prior to beginning clearing and grubbing. B. Geotextile Reinforcement–Geotextile reinforcement layer shall consist of TenCate CR330.The WASTE,AND THE STANDARDS CONTAINED IN THE
<br /> and 3,shall be In accordance with the project plans and the Geotechnicalthe project report for t titled Q 1
<br /> geotextile is to be manufactured at the plant in 75-foot by 300-foot panels.All field joints shallSNOHOMISH HEALTH DISTRICT SOLID WASTE FACILITY I— W
<br /> I
<br /> DEFINITIONS be field seamed In accordance with the TenCate specifications for field seaming.A geotextile "Geotechnical Engineering Services,Mountain View Business Centre,Division 9,Lot 3,Everett,
<br /> PERMIT(5)ISSUED TO CEMEX. W LLJ
<br /> A. Gearing:removing and disposing of all unwanted material from the surface,such as trees, panel layout plan shall be submitted by the Contractor prior to construction.Anchor trenches Washington; N
<br /> dated April 7,2017. 0 L.l..,
<br /> brush,down timber,or other natural material. 2. Fill Materials: 0
<br /> are to be Installed per the details shown on the construction plans along the perimeter of the >
<br /> B. Grubbing:removing and disposing of all unwanted vegetative matter from underground,such as geotextile layer to secure the geotextile,and in accordance with TenCate's requirements. a. Cap Soils:Fill placed within the upper 2 feet of final grade on Lot 3 shall consist of on-site or Z
<br /> sod,stumps,roots,buried logs,or other debris. C. Lot 3 Working Pad Fill-Material for the Working Pad(counter-weight)layer(first 3 feet)to be imported soil free of debris and rubble,and capable of being compacted to at least 90 percent of Q Z Z
<br /> placed over the high strength geotextile shall consist of on-site soils as approvedW
<br /> g g[ g by the the maximum dry density(MOD)per ASTM D 1557.The fill shall be placed in 12-inch maximum Z < Z
<br /> SEQUENCING AND SCHEDULING Engineer.Working pad fill shall consist of 4-inch minus soil,which is free of deleterious loose lifts and compacted with a vibratory steel drum roller or other heavy compaction 0
<br /> A. The Contractor shall only clear and grub areas that are to be immediately worked on. material,pond sediment,rubble,and organics. equipment.Clayey soils,remediated soil(burned dirt),and mud press cake shall not be used in H U o
<br /> B. Before excavation or fill placement can begin within a planned area of work,the area must be D. Working Pad material shall be moisture conditioned,and compacted by track-walking with at the upper 2 feet of site grades. (—
<br /> either cleared or cleared and grubbed.Site Preparation and/or Clearing and/or Clearing and least 4 passes of the dozer. Q Z //� Lu
<br /> either
<br /> Grubbingshall be as follows: b. Working Pad:Working pad fill on Lot 3 shall consist of drier soils excavated from Lot 1 or �//
<br /> E. The initial lift over the geotextile shall be 1 to 2 feet thick and completely track-walked prior to (� D I^ IX
<br /> a. All ponded water shall be pumped from the sedimentpond surface and removed from the and track-walkedated soil(burned dirt),provided that the soils can be placed in 12-inch maximum loose lifts LI J
<br /> P P placing subsequent lifts. W
<br /> site. F. All subsequent lifts shall be a maximum of 1-foot thick and track-walked with the dozer, and to achieve compaction with at least 4 passes.Relatively dry import soils or 0 '1 1 Lj
<br /> b. All vegetation shall be cleared and grubbed from areas to receive structural fill on Lots 1 and G. Lot 3 Fill Over Working Pad.All fill placed over the working pad shall be on-site materials suitable soils excavated from elsewhere on CEMEX's property may also be used if approved by U W W
<br /> 2. GeoEn sneers.
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<br /> approved by the Owner and engineer. B a.
<br /> c.All vegetation shall be cut to within 1-inch of the ground surface over the sediment surface H. Fill placed within 10 feet of slope surfaces the top surface of Lot 1 shall be clean fill. c. Mass Filling:Fill placed between the cap fill and the working pad fill on Lot 3 shall consist of any of fn `^
<br /> and in all areas where the geotextile will be installed.No grubbing shall occur on the sediment I. Fill placed within 15 feet of the slopes shall be compacted to at least 90 percent of the the following materials provided it conforms to the(1)Department of Ecology's guidelines for V J
<br /> surface under the geotextile. maximum dry density per ASTM D 1557. unrestricted land use and for inert waste,and(2)standards outlined in the Snohomish County
<br /> d.All cleared vegetation shall be removed,stockpiled,and chipped for later reuse on slopes. 1. Fill placed within 3 feet of final top grade shall be compacted to at least 90 percent of the Health District solid waste permit(s)issued to CEMEX for the Glenwood Facility.
<br /> COmaximum dry density per ASTM D 1557. • Fill material generated from the mud press,which consists of moist to wet silt soils(cake fill).
<br /> PROTECTION K. All remaining fill placed over the working pad(except as described herein)shall be track-walked • Miscellaneous imported reclamation fill materials,which may include inert construction
<br /> A. All streets,roads,grading,structures,utilities,monitoring wells,and other improvements not in 1-foot maximum loose lifts using the dozers or other tracked equipment. debris.
<br /> specifically designated to be cleared,removed,stripped or altered as a part of the work shall be L Lots l and 2 Structural Fill–All fill placed on Lots l and 2 shall consist of structural fill.Material • Remediated soil generated from the soil remediation facility consisting of miscellaneous drier
<br /> protected from damage throughout the construction period.Any damage caused by the for Structural Fill shall consist of on-site soil as approved by the Engineer,and shall be
<br /> Contractor,his employees,agents,or any lower tiered subcontractors shall be immediately compacted to at least 92 soil(burn dirt).
<br /> p percent of the maximum dry density per ASTM D 1557,except that the \�
<br /> repaired to the original condition and to the satisfaction of the Engineer or representative at the top 2 feet shall be compacted to at least 95 percent. • On-site material generated from cuts elsewhere on CEMEX's property adjacent to Lot 3.This
<br /> contractors cost.Completed work(e.g.earthwork and foundations)shall be protected from M.Settlement Monitoring Plates.The contractor shall supply and install up to 15 settlement material is expected to consist of till fill soil composed primarily of silty sand with variable
<br /> wetting,drying and freezing by providing temporary drainage features and blankets or monitoring plates across the pond surface at locations identified by the Engineer.The gravel content,although cuts in previously imported materials containing some rubble and -x,):•
<br /> protective cover soil layers as necessary. settlement plates shall be placed after the geotextile is installed,but prior to placing working debris may also be used.
<br /> B. Existing 14-Inch diameter HDPE pipe located along berm adjacent to Sievers Duecy Boulevard pad fill.
<br /> shall be protected and the pipe shall remain in service throughout all earthwork and Mass fill shall be placed and spread In 12-inch maximum loose lifts and track-walked with the
<br /> construction activities. Required Sequence of Fill Placement: dozer with at least 3 passes.Concrete pipes or other materials containing voids shall be broken
<br /> up prior to being buried under subsequent lifts of fill.Rubble and large debris shall not be nested
<br /> II.WORKING PAD(Counter-Weight)AND FILL CONSTRUCTION 1. The working pad shall be placed sequentially around the pond perimeter starting from the and shall be spread out such that fill soils can be placed around the larger debris without voids "'fly
<br /> southwest corner,and then moving east along the existing dyke,and northwest along Lot 1.The and track-walked.
<br /> SUMMARY initial working pad layer is to be approximately 150 feet wide and 3 feet thick,prior to placing
<br /> This section describes general requirements for earthwork including installing the geotextile 3. Lot 3 Sled within
<br /> eq 8 8 8 adjacent working pad fill. Fill placed wi15 feet of all Lot 3 slopes steeper than 4H:1V shall consist of sod free of construction
<br /> reinforcement,working pad(counter-weight),and placement of fill and structural fill.Work includes 2. No fill can be placed above the working pad layer until the geotextile is completely covered by debris or mudpress cake,and shall be capable of beingcompacted to at least 90
<br /> excavation,fill,backfill,compaction,grading,processing,stockpiling,disposal of unsuitable materials, the working pad fill,and as approved by the engineer. p P percent of the MDD
<br /> aggregates,slope construction,sub-grade preparation and over-excavation and replacement. 3. During initial fill placement to construct the working pad,the contractor shall work with the per ASTM 0 1557.Remediated soil shall not be used within 2 feet of the slope face. O
<br /> OI engineer to place fill on high pots or mounded areas(mud waves)located across the sediment 4. Slope Reconstruction: _ _
<br /> sSb across the pond surface along high spots,as directed by engineer. Materials used for slope reconstruction on Lots 1 and 3 shall consist of soils free of debris and CO
<br /> SUBMITTALS 4. All fill placed for Lot 1,Lot 2,and for the Working Pad,shall be cut from Lot 1,unless approved organics,such as suitable excavated soils generated from the slope cuts or till fill excavated from Lot Z W y m w
<br /> U A. Proposed method to deploy high strength geotextile,Including geotextile panel layout plan by the Engineer and owner. 2.The fill shall be moisture conditioned to within 3 percent of the optimum moisture content such <
<br /> i (using factory seamed panels that are about 300 feet by 75 feet),anchor trench construction that it can be compacted to at least 90 percent of the maximum dry density(MDD)per ASTM D 1557. >Q tO
<br /> methods,field seaming of panels,and protection from earthwork equipment. Wet Weather Handling and Placement of On-site Soil: Remediated soil(burned dirt)may be used for slope reconstruction,except within 2 feet of the slope W V t
<br /> g B. Name and contact information for TenCate representative(e.g.Mark Sikkema,TenCate),who is 1. Due to high fines content,the on-site soils will be moisture sensitive and verydifficult to > a
<br /> B face where clean mineral soil shall be used.Mud press cake shall not be used within 15 feet the slope Q
<br /> cS required to be on-site for first week of geotextile deployment,and periodically thereafter,until 0
<br /> impossible to compact during wet weather or when Its moisture content increases to more than face.All reconstructed fill slopes shall be keyed in at the toe at least 3 feet and shall be benched into �3
<br /> geotextile is covered with initial 3 feet of fill.
<br /> about 2 percent over optimum. the temporary cut slope.The slopes shall be overbuilt by 2 to 3 feet during fill placement and 4 c t
<br /> w C. Name and contact information for suppliers'representative,who is required to be on site during 2. The Contractor is required to protect the on-site soil and adjust the moisture content such that
<br /> deployment and field seamingactivities(e.g.Pat Gowan,ACF West subsequently cut back to expose well compacted fill along the face of the slope. Q•
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<br /> geotextile )• it can be placed and compacted as specified herein.The contractor should be prepared to O Q
<br /> jD. Proposed soil processing,placement,compaction,and moisture control equipment. handle the soils such that they are aerated and dried as needed to meet the specified 5. Lot 3 Unpaved Access Road Subgrade Preparation: Z N
<br /> E. Proposed work schedule. Q< ro
<br /> compaction criteria. The access roads on Lot 3 shall be evaluated by GeoEngmeers within the upper 2 feet.Prior to placing
<br /> F. Proposed working pad(counter-weight)fill placement sequence.The sequence shall begin in periodsmay suspendplacementnew fill alongthe access road,the exposed
<br /> 3. Isolated or extended of wet weather force the Contractor to by proof-rolling using a piece
<br /> the southwest area of the sediment surface and proceed to the north along west boundary,anda load dump Afterbe evaluated
<br /> and compaction of on-site soils.It will be the Contractor's responsibility to complete the of heavy tire-mounted equipment or a loaded dump truck. proof-rolling,the sutrgatle area should
<br /> east along the dike,with the initial cover fill being not more than 3 feet thick or extending into specified work in the specified schedule. beorou th
<br /> pond more than 150 feet. ghy compacted to a firm condition.If the subgrade cannot be compacted to a firm condition,
<br /> G. Proposed method of protecting existing 14-inch HDPE pipe during grading and embankment it Is likely that the soils remain wet at depth.If this is the case,the material should be allowed to dry
<br /> construction. sufficiently to be properly compacted,or removed where needed based on field evaluation.Where new REVISIONS: APPD.
<br /> EXECUTION fill isplaced to achieve road sub
<br /> H. Proposed excavation,stockpiling,re-grading and staging plan describing handling and transport GENERAL grade,the fill shall be placed in 12-inch maximum loose lifts and
<br /> o of on-site and off-site materials,including sediment and unsuitable soil haul. compacted with a vibratory steel drum roller or other suitable compaction equipment to at least 95
<br /> til I. Proposedproof rollingmethod for Lots 1 and 2,and A. Equipment: percent of the MDD
<br /> po equipment. a. All equipment and tools used in the performance of this work are subject to the per ASTM D 1557.
<br /> w 1. Submit name of imported materials suppliers. of 6. Erosion and Sediment Control: _
<br /> K. Submit certificate of conformance with specifications from supplier for all imported material. approval la the Engineer, predi representative tion egwpm int ro.
<br /> b. Provide placement,spreading,and compaction equipment appropriate for the material Erosion and sedimentation control measures shall be implemented
<br /> L Submit geotextile certificates and manufacturing information. pleall b efi as shown on the project drawings.
<br /> M.Submit erosion controlproduct information for erosion control blanket,and h droseed types to obtain the densities specified. All disturbed areas,especially slopes
<br /> 3 y c. Operate and maintain compaction equipment in accordance with the manufacturer's Pec y steeper than 4H:1V,shall be finish graded and seeded as soon as
<br /> materials. instructions and recommendations.If inadequate densities are obtained,provide larger practicable to reduce the risk of erosion.An erosion control blanket shall be placed on ntrol slopes
<br /> and/or different type equipment,or modify soil drying techniques at no additional cost per the manufacture's requirements.The slopes shall be hydroseeded after the erosion control blanket
<br /> SEQUENCING AND SCHEDULING
<br /> to the Owner. is installed,as directed by the Engineer.For all slopes,a dozer shall be used to track-walk the slope
<br /> A. Submit source quality control samples to the Engineer at least 7 working days before potential d. Provide equipment for applying water of a type and quality adequate for the Work,free face"up and down'prior to placing mulch,erosion control blankets,and hydroseed.This action will
<br /> use In work. of leaks and equipped leave track marks perpendicular to the slope that will help control rurwff/riliing and provide catchment
<br /> q pped with a distributor bar or other approved device to ensure uniformDATE: 2017
<br /> B. Notiythe Engineer prior to commencement ofproof-rotting(24 hours). application. for hytrack mAPPoL
<br /> C. Give at. notice(21 hours)to the Engineer when ready for compaction testing and e. Provide equipment for mixing and drying out material,such as blades,discs,or other DESIGN:
<br /> inspection,and when ready for subgrade testing and Inspection. 7. Storm Water Co. ntrol: DRAIIN: G1,K
<br /> approved equipment.
<br /> 8 D. Give advance notice to the Engineer for surveys for bid quantities for payment and allow for The contractor shall intercept surface water and divert it away from the top of the slopes to prevent CHECKED: ,RI$
<br /> time required for surveys to be performed. B. Equipment for Operating Above Geotextile: scouring(Ailing)on the slope faces by using temporary storm water collection ditches. REVISION
<br /> E. Notify engineer(3 working days)when geotextile subgrade on sediment pond surface is ready a. Track-mounted equipment with low ground pressure treads,no larger than a Caterpillar 8. Monitoring and Testing: NUMBER:
<br /> to be inspected prior to geotextile Installation. Model D3 LOP or approved equivalent having a ground pressure of 4 psi or less,shall be The Owner shall employ GeoEngineers to monitor earthwork activities and to test structural fill placed
<br /> o: F. Give advance notice(5 working days)when geotextile is scheduled to be installed. used for spreading Working Pad fill over the geotextile.In no case shall tracked SCALE:
<br /> G. Notify engineer(24 hours)when geotextile anchor trenches are prepared and ready to be equipmentbeallowed to operate on less than 12 inches of fill over the geotextile. to reconstruct slopes,fill placed testing
<br /> ngbyG2 feet of the access road sub, proof-rolling and final cap
<br /> p Inspected prior to geotextile installation. b. Equipment other than the above-described track-mounted equipment may be operated fill.The contractor shall facilitate testing by GeoEngineers,as needed,including potholing to test fill.
<br /> PROJECT NUMBER:
<br /> above the geotextile on temporary haul roads at least 5 feet thick,and only at locations
<br /> obi PR
<br /> PRODUCTS
<br /> and with equipment approved by the Engineer. Hydro Seed Mix Specifications(Lot 3) CEMX00000005
<br /> Mc. Compaction equipment including vibratory steel drum compactors may be used to
<br /> obtain compaction for structural fill placed in Lots 1 and 2,and for structural fill placed 1. Hydroseeding Materials shall generally conform to WSDOT Standard Specifications section 9.14.2. DRAWING FILE:
<br /> A. General on Lot 3 for slope construction and for the top2 feet.
<br /> Seed mixture shall be modified for Lowgrow(Orchard)Seed Mix as follows: EC-009-NS-CEMX0005 Div9.dwg
<br /> $m a. The Engineer or representative,prior to use or delivery to the site,must approve all
<br /> materials and material sources. 50%ELF(or comparable)Perennial Ryegrass
<br /> SHEET NO.
<br /> 30%Creeping Red Fescue
<br /> 44 10%Hard Fescue ^J 9
<br /> 5%Lupine
<br /> J �J,1
<br /> o m 5%Dutch White Clover OF 9
<br /> am
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