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Home My WebLink AboutDRC-2025-00014501" of Waste M2na92:• '"'· 1t and Radiation Control JAN O 9 2025 a a ;:::::::- ENERGYSOLUTIONS CLASS A WEST EMBANKMENT CLIVE UTAH PHASE 6 FINAL COVER CONSTRUCTION REPORT & AS-BUILT DRAWINGS December 16, 2024 DUPLICATE COPY TABLE OF CONTENTS 1.0 INTRODUCTION .................................................................................................. 1 1.1 Background ............................................................................................................ 1 1.2 Key Project Staff .................................................................................................... 1 1.3 Project Documentation .......................................................................................... 2 1.3.1 1.3.2 1.3.3 1.3.4 Daily Construction/Activity Reports ....................................................... 2 Construction Quality Assurance/Quality Control Testing & Monitoring .................................................................................................. 2 Project Photographs ................................................................................ 3 Non-Conformance Reports ....................................................................... 3 1.4 Construction Activities .......................................................................................... 3 2.0 RADON BARRIER PLACEMENT ..................................................................... 3 2.1 Construction Activities ......................................................................................... 3 2.1.1 2.1.2 2.1.3 2.1.4 2.1.5 2.1.6 2.1.7 2.1.8 General ........................................................................................................ 3 Clay Borrow .............................................................................................. 4 Clay Stockpiles and Processing ................................................................ 4 Radon Barrier Placement and Compaction ........................................... 4 Radon Barrier Permeability ..................................................................... 5 Lift Bonding ............................................................................................... 5 Radon Barrier Key-In to Construction .................................................... 5 Final Grading ............................................................................................. 6 2.2 Quality Control Support Summary ................................................................... 6 2.3 Corrective Actions ................................................................................................. 6 2.4 Field Changes ......................................................................................................... 6 3.0 COVER ROCK PREPARATION ......................................................................... 7 3.1 Construction Activities .......................................................................................... 7 3.1.1 3.1.2 3.1.3 General ........................................................................................................ 7 Petrographic Examination of Aggregate ................................................. 7 Rock Quality Testing and Gradations ..................................................... 7 3.2 Quality Control Support Summary ..................................................................... 8 3.3 Material Gradation and Permeability Testing .................................................... 8 3.4 Corrective Actions ................................................................................................. 9 3.5 Field Changes ......................................................................................................... 9 4.0 COVER ROCK PLACEMENT ............................................................................. 9 4.1 Construction Activities .......................................................................................... 9 4.1.1 4.1.2 4.1.3 CAW Phase 6 Cover Construction Report General ........................................................................................................ 9 Filter Zone and Sacrificial Soil Placement ............................................ 10 Type A and B Riprap Placement ............................................................ 10 DUPLICATE COPY Date: December I 6, 2024 Revision: 0 4.2 Quality Control Support Summary .................................................................. .11 4.3 Corrective Actions ............................................................................................... 11 4.4 Field Changes ....................................................................................................... 11 5.0 COVER TERMINATION FOR FUTURE TIE IN ............................................ 11 5.1 General .................................................................................................................. 11 5.2 Construction Activities ........................................................................................ 11 6.0 DRAIINAGE DITCH BACKFILL AND GRADING ......................................... 12 6.1 Construction Activities ........................................................................................ 12 6.1.1 General ...................................................................................................... 12 6.1.2 Clay Borrow ............................................................................................. 12 6.1.3 Ditch Backfill Placement and Compaction ............................................ 12 6.1.4 Final Grading ........................................................................................... 13 6.2 Quality Control Support Summary ................................................................... 13 6.3 Corrective Actions ............................................................................................... 13 6.4 Field Changes ....................................................................................................... 13 7.0 INSPECTION ROAD ............................................................................................. 14 7.1 Construction Activities ........................................................................................ 14 7.1.1 General ...................................................................................................... 14 7.1.2 Roadbase Material ................................................................................... 14 7.1.3 Subsurface Preparation ........................................................................... 14 7.1.4 Road Base Placement and Compaction ................................................. 14 7.2 Quality Control Support Summary ................................................................... 14 7.3 Corrective Actions ............................................................................................... 14 7.4 Field Changes ....................................................................................................... 14 8.0 SETTLEMENT MONUMENT INSTALLATION ............................................. 15 8.1 General .................................................................................................................. 15 8.2 Construction Activities ........................................................................................ 15 9.0 AS-BUILT DRAWINGS .................................................................................... 15 APPENDICES APPENDIX A ........................................................................ Select Project Photographs APPENDIX B ....................................................................................... As-Built Drawings CAW Phase 6 Cover Consnuction Report DUPLIC~'TE COPY Date: December 16, 2024 Revision: 0 1.0 INTRODUCTION EnergySolutions has prepared the following Construction Report and As-Built Drawings for the Class A West (CAW) Phase 6 Cover Construction work. The report was prepared by the Project Engineer and was reviewed by the Project Manager, the Quality Control (QC) Supervisor and Construction Quality Assurance. This report includes a description of construction activities, photographs, and As-Built Drawings for all construction activities. 1.1 Background All construction was performed in compliance with the CAW cover project construction contract agreement, plans, specifications, and the LLRW and 11 e.(2) Construction Quality Assurance/Quality Control (CQA/QC) Manual, Revision 28c, Dated February 12, 2020 (CQA/QC Manual) as approved by the Utah Division of Waste Management and Radiation Control (UDWMRC). Construction of the Class A West Phase 6 Cover Construction project was initiated with the beginning of the excavation, preparation and stockpiling of radon barrier and screening of rock erosion materials in 2023 ( during Phase V) and 2024 by Broken Arrow, Inc. Cell construction of the Phase 6 CAW cover (radon barrier placement) began on August 20, 2024. The CAW cover consisted of completing the cover construction north and adjacent to the Phase 3 and 4 Cover projects as shown on the project drawings and in the project photographs. The CQA/QC Manual required final cover settlement monuments located on the CAW top slopes be installed during construction atop the completed radon barrier and then carefully buried within the subsequent rock layers. Broken Arrow performed gross excavation activities required for clay mining, preparation, and stockpiling of radon barrier during 2023 and 2024 and reconditioned that material, as needed, for the Phase 6 work. Broken Arrow performed all subsequent radon barrier and rock construction activities using the cover materials produced in 2023 and in 2024 as noted above. Wiss, Janney, Elstner Associates, Inc. (WJE) and Montgomery Watson Harza (MHW) performed the Petrographic Studies of Aggregates for the rock cover sources. EnergySolutions, with limited support from RB&G Engineering, performed quality control inspections and quality assurance testing of the Type A and B Filter Zones, Sacrificial Soil, Type A and B Ripraps, Radon Barrier, Ditch Fill, and Inspection Road. All quality control activities were conducted in accordance with the CQA/QC Manual and construction drawings. 1.2 Key Project Staff The following personnel held key positions during the construction of the CAW cover project. CAW Phase 6 Cover Construction Report December 16, 2024 Revision: 0 EnergySolutions of Utah, LLC. Project Manager: Project Engineer: Quality Control Supervisor: Quality Assurance Manager: Quality Assurance Specialist: Quality Control Technicians: Todd Stewart Garrett Q. Dutson, PE James Cason Curtis Kirk Shauna Watkins Marissa Sotello, Sherlie Gonzales, John Kenison, and Stewart Ekins EnergySolutions of Utah, LLC (Temporary Cover) Manager, Waste Disposal Operations: Brennon Dick Roger Ekins Project Superintendent: Broken Arrow (General Construction Contractor) Project Manager: Project Superintendent: WJE (Petrographic Studies of Aggregates) Associate Principal: Dave Cummings Shane Martin L Brad Shotwell RB&G Engineering, Inc. (Geotechnical Laboratory and Field support) Quality Control: Jacob Boone and BrieAnna Osborne State of Utah Department of Waste Management and Radiation Control Primary Inspector: Carlo Romano 1.3 Project Documentation 1.3.1 Daily Construction/Activity Reports Daily Construction Reports, providing specific daily construction activities and QC inspections, testing and observations were prepared by the EnergySolutions QC Technicians. The project QC documentation is located on file at EnergySolutions' Clive Site. 1.3.2 Construction Quality Assurance/Quality Control Testing & Monitoring Construction quality assurance/quality control (CQA/QC) activities were performed in accordance with the CQNQC Manual and monitored by the QA. All CQNQC testing results and monitoring documentation were provided to QA and were made available to the UDWMRC for inspection and will be maintained as required. CAW Phase 6 Cover Construction Report DUPLI C,~TI: COPY December 16, 2024 Revision: 0 1.3.3 Project Photographs Project photographs representing the project were taken during construction. Several representative photographs of the different stages of construction are provided at Appendix A. 1.3.4 Non-Conformance Reports No non-conformance reports were issued nor required for this work element. 1.4 Construction Activities The Class A West Phase 6 Cover construction consisted of six (6) basic construction elements: I . Radon Barrier Placement: Excavation, preparation, stockpiling, verification testing, placement, and testing of radon barrier material. Previously approved test pad plans (TP-2019-2 and TP-2021-1) were utilized in this phase of construction. 2. Cover Rock Preparation: Screening, stockpiling, and verification testing of the cover erosion materials. 3. Cover Rock Placement: Sacrificial Soil & Type A and B Filter Zones: and Type A and B Riprap placement and inspection and verification testing. 4. Cover Termination Protection: Installation and inspection of geotextile and sandbags. 5. Drainage Ditch Backfill & Grading: Ditch fill placement, inspection, and verification testing. Ditch grading, inspection, and survey verification. 6. Inspection Road : placement, inspection and verification testing and surveying of the Phase 6 haul road. 7. Settlement Monument Installation: placement, inspection, and survey. 2.0 RADON BARRIER PLACEMENT 2.1 Construction Activities 2. 1.1 General In general, all radon barrier construction and radon barrier clay material stockpiling activities were observed by EnergySolutions' Quality Control and documented on daily reports. All required sampling and testing were performed in accordance with the CQA/QC Manual. Construction activities were also observed by various EnergySolutions personnel (Project Manager, Project Engineer, QC Supervisor, QC Technicians, and QA Specialist) and the UDWMRC. Class A West Phase 6 Cover radon barrier construction included placement, testing, and approval of all CAW Phase 6 Cover Construction Report DUPLl 0A31E COPY December 16, 2024 Revision: 0 radon barrier lifts as discussed below. Successful final surveys and joint inspections were held as required. 2.1.2 Clay Borrow Broken Arrow was approved to excavate clay from an approved location on EnergySolutions property in Section 5. The approved clay borrow site was cleared and grubbed as required. Broken Arrow used haul trucks and a track hoe to excavate clay and deliver to the stockpile processing area. The clay material used for the CAW cover project met the required soil Classification, Liquid Limit, Plasticity Index, and Gradation as required by the specifications and the CQA/QC Manual. In addition, the clay material did not contain debris, vegetation, or any other deleterious material. 2.1.3 Clay Stockpiles and Processing It was determined during stockpile construction, from experience and from the test pads, that Broken Arrow would prepare clay material stockpiles prior to placement of the clay material in the cells. Approximately 20,684 cubic yards of lxI0-6 cm/sec and 16,574 cubic yards of 5x I o-8 cm/sec radon barrier materials were prepared and stockpiled in Section 5 ( during 2023 and 2024) for cover construction according to a Broken Arrow survey. Approved Test Pad TP-2019-2 was followed by Broken Arrow for the lxI0-6 cm/sec radon barrier clay material preparation. Approved non-deflocculant 2021 Test Pad TP-2021-1 was followed by Broken Arrow for the 5x 10-8 cm/sec radon barrier clay material preparation. Broken Arrow used a Soil Recubic yardscler/Stabilizer to evenly mix the 5xI0-8 cm/sec clay as required by the TP- 2021-01 test plan to ensure that the dry clod size of the material was less than one . inch. The total placed radon barrier volume for Phase 6 was approximately 27 ,944 cubic yards; therefore, a minimum often (10) Proctors at a 3,000 cubic yard lot rate, and six (6) laboratory classification tests were required at a 5,000 cubic yard lot rate. Fifteen ( 15) proctors and fifteen (15) classification soil analyses were performed for the radon barrier clay material pertinent to this Phase. For the CAW cover project, all proctors and classification testing reports that were completed for use with the radon barrier density testing were found to conform to the specifications and the CQA/QC Manual. 2.1.4 Radon Barrier Placement and Compaction The two test pads, TP-2019-2 and TP-2021-1 were used for the Phase 6 radon barrier placement. TP-2019-2 is for the placement of lxI0-6 cm/sec clay, and TP- 2021-1 is for the placement of 5x 1 o-s cm/sec clay. Copies of approved test pads are on file. CAW Phase 6 Cover Construction Report DUPLI C,~f1E COPY December 16, 2024 Revision: 0 Several test pad TP-2019-2 and TP-2021-1 equipment equivalencies were prepared during the Phase 6 project and certified by EnergySolutions' engineering for equipment that Broken Arrow selected to use on the project and all analyses were provided to and approval concurrence given by the UDWMRC. In addition, a Variance to verify the lift thickness using GPS Equipment was prepared by EnergySolutions and approved by the UDWMRC for CQA/QC Specifications 148 and 184 for Radon Barrier and Ditch ( clay) lift thickness placement during the Phase 6 Cover project. Copies of these approvals are on file and copies of the QC documentation showing the lift placement verifications are also on file. Quality control moisture density tests were required to be performed at a rate of one test per compacted 500 cubic yards of radon barrier. The radon barrier volume placed for Phase 6 was approximately 27,944 cubic yards; therefore, a minimum of fifty-six (56) moisture density tests were required. Seventy-one (71) passing moisture density tests were performed on compacted radon barrier lifts. All radon barrier lifts were placed, compacted, tested, and approved in accordance with the approved test pads and the CQA/QC Manual requirements. Several test lots initially failed moisture specified requirements and were reworked as needed and retested until satisfactory results were achieved. 2.1.5 Radon Barrier Permeability Permeability tests were conducted in-situ on the compacted radon barrier using the Sealed Single Ring Infiltrometer (SSRI). Permeability tests were required to be performed at a rate of one test per compacted 2,000 cubic yards of compacted radon barrier. The radon barrier placed volume was approximated 27,944 cubic yards; therefore, a minimum of fourteen (14) permeability tests were required. Sixteen ( 16) passing permeability tests were performed on the compacted radon barrier. All 1 x 1 o-6 cm/sec and 5x 1 o-8 cm/sec tests passed. 2.1.6 Lift Bonding The sheep's foot compactor provided a roughened surface for lift bonding of subsequent lifts of radon barrier clay. Water was applied to the clay surface and along the edges as necessary with a water truck prior to placement of the following lift of radon barrier to help with the clay bonding process and to maintain the moisture content. Quality Control observed and verified that Broken Arrow provided a roughened surface of the previously compacted radon barrier lifts as required. 2.1.7 Radon Barrier Key-In to Construction Keying-in was required along the western perimeter of the Phase 3 project and northern perimeter of the Phase 4 project. The previously placed Phase 3 and 4 radon barriers were cleared of non-specification material and debris, cut into vertical steps where possible (at the most 9 inches in height and at least 18 inches in width), moisture conditioned and inspected, prior to placement and compaction CAW Phase 6 Cover Construction Report DUPLI C,¢.ff1E COPY December 16, 2024 Revision: 0 of new lifts. QC inspections were documented on construction lift approval forms, which are on file. 2.1.8 Final Grading The final radon barrier surface was graded to a tolerance of grade to 0.2 feet above grade and surveyed on a 50-foot grid and at key points as required by the CQA/QC Manual. The final surface was also rolled with a smooth drum roller. Final survey measurements for the cells were reviewed and approved as required. The required 48-hour notice was given to the UDWMRC per the CQA/QC Manual requirements. The completed radon barrier was then inspected by the EnergySolutions' representative(s) and a UDWMRC representative. The radon barrier surface was found to be regular (less than one-inch vertical drop over any area), free ofrocks or other hard objects on the surface that are greater than ½ inch, free of soft spots and loose soil areas, and free from desiccation cracks that might diminish the integrity of the radon barrier. 2.2 Quality Control Support Summary In general, Quality Control performed the following Quality Control activities during the construction of the radon barrier: • Verification of the lift thickness prior to radon barrier placement using GPS or grade stake approved methodologies. • Verification of proper lift thickness by survey. • Verification of the removal of any grade stakes, rocks, debris, etc. • Inspection and sampling of the borrow material placed as radon barrier and perfonnance of Proctors and soil analysis. • Observation and documentation of the tilling of the 5x 1 o-8 cm/sec radon barrier clay stockpiles. • Observation and inspection of radon barrier placement, compaction, and performance of in-place moisture/density and permeability tests. • Verification of survey points. • Verification that equipment had proper calibrations. • Verification ofradon barrier drying prevention method (as required per the latest revision of the CQA/QC Manual. 2.3 Corrective Actions No corrective actions were required for this work element. 2.4 Field Changes No field changes to this work element were required. CAW Phase 6 Cover Construction Report DUPLl ~~Tf:: COPY December I 6, 2024 Revision: 0 3.0 COVERROCKPREPARATION 3.1 Construction Activities 3.1.1 General Some of the excess erosion control cover materials, including the Type A Riprap and some of the Type B Riprap and Type B Filter, were screened and stockpiled by Broken Arrow during the Phase 5 Cover work in 2023 as reported in the Phase 5 Cover as built report. Through Spring and Summer 2024, Broken Arrow performed further screening and crushing operations to produce all remaining required Phase 6 Cover rock products including Type B Riprap, Type A and B Filters, and Sacrificial Soil, and some excess products now remain following the completion of the Phase 6 Cover project for future cover phases. As reported in previous cover project phases, the source for the rock materials of this project are the Graybacks South gravel pit (the former eastern raw material stockpile on Section 5; now completely processed) and the Graybacks Community Pit 24 (the now completely processed western raw material stockpile on Section 5). Incidentally, in early 2024 Broken Arrow mined and delivered approximately 80,000 cubic yards of raw Graybacks Community Pit 24 material stockpiled now on the northern western portion of Section 5 for future cover materials. EnergySolutions' Quality Control performed all rock sampling of the various raw material and screened stockpiles. EnergySolutions and RB&G performed laboratory testing in accordance with the CQNQC Manual. Construction activities were also observed by representatives of QA and various EnergySolutions personnel (Project Manager, Project Engineer, QC Supervisor and QC Technicians). 3.1.2 Petrographic Examination of Aggregate As reported with previous construction phases, the Graybacks South gravel pit samples were sent to Wiss, Janney, Elstner Associates, Inc. (WJE) in Ohio for performance of the Petrographic Study of the gravel pit rock source that was used on the Class A West Phase 6 Cover project. The Graybacks rock source was determined to be "composed of primarily of acidic to intermediate volcanic rocks that exhibit only minor internal alteration due to weathering". The Graybacks Community Pit 24 gravel pit was previously evaluated by Montgomery Watson Harza (MHA) and determined to be composed of the same lithologies as the South Pit, with generally the same sorting and rounding as that in the South pit, but with about 80 percent limestone and 20 percent igneous extrusives. Copies of the Petrographic Examination reports for both gravel pits areas on file. 3.1.3 Rock Quality Testing and Gradations Quality Control sampled the screened stockpiles in accordance with the CQNQC Manual. Quality Control then performed the Aggregate Gradation analysis of the samples for calculation of the required ratios discussed below. As reported in CAW Phase 6 Cover Construction Report DUPLI CA7TE COPY December 16, 2024 Revision: 0 previous Cover phase reports, RB&G performed sixteen (16) Rock Quality Tests: Specific Gravity, Absorption, Sodium Soundness, and L.A. Abrasion from which each of the Rock Products was scored. Sixteen samples were obtained from the Community Pit 24 , bank run stockpile. RB&G performed Rock Quality Tests (Specific Gravity, Absorption, Sodium Soundness, and L.A. Abrasion) for these samples. All rock products and bank run materials were calculated to have a Rock Quality score of at least 50 . In like manner and incidentally, RB&G performed eight (8) Rock Quality tests for the new 80,000 cubic yards stockpile and all scored at least 50 . All gradation and rock quality test results are on file. 3.2 Quality Control Support Summary In general, the following Quality Control activities were performed during Rock Quality testing: • Observation of rock processing operations. • Inspection and sampling of the stockpile material for the Rock Quality testing and analysis. • Performance of the various Rock Quality Tests and calculation of the Rock Quality scores. 3.3 Material Gradation and Permeability Testing The Riprap, Filter Zones and Sacrificial Soil materials were sampled, tested, and determined to meet the requirements of the CQA/QC Manual. Filter Zone and Sacrificial Soil gradation testing and ratio calculations were performed by EnergySolutions' Quality Control group. Quality control gradation tests were required to be performed at a rate of one test per 10,000 cubic yards of Type A Filter, Type B Filter, Type A Riprap, Type B Riprap, and Sacrificial Soil (stockpiled). Permeability testing of the Type B Filter Zone material was required to be performed at a rate of at least one test per 10,000 cubic yards. Unless otherwise noted, all the following sampling and testing was performed in 2024 and in 2023 as previously reported in the Phase 5 As-Built Report. The total Type B Filter volume processed and stockpiled in 2023 and in 2024 was approximately 13 ,530 cubic yards and the amount required for placement on the Phase 6 Cover project was 8,795 cubic yards and therefore, a minimum of one (1) gradation and permeability test was required for the project. One (1) passing gradation and permeability test was performed in 2024 in addition to the passing 2023 gradation and permeability tests previously performed. The gradation and permeability tests were performed by RB&G. The Type B Filter Zone permeability, and the various material gradations and ratios met the CQA/QC Manual requirements. The Sacrificial Soil volume processed and stockpiled in 2024 was approximately 15,361 cubic yards and the amount required for placement on the Phase 6 Cover CAW Phase 6 Cover Construction Report DUPLI C~TE COPY December 16, 2024 Revision: 0 project was 12,118 cubic yards. A minimum of two (2) gradation tests was required and two (2) passing gradation tests were performed in 2024. Ratio calculations between the Type B Filter and Sacrificial Soil materials processed in 2024 were performed by comparing the Type B Filter gradation test results with the Sacrificial Soil gradation test result to calculate the specified required CQA/QC ratios and two (2) such comparisons were made in 2024 with each test (lot) combination producing favorable results. The Type A Filter volume processed and stockpiled in 2024 by Broken Arrow totaled approximately 7,997 cubic yards and the amount required for placement on the Phase 6 Cover project was 6,378 cubic yards. A minimum of one (1) gradation test was required and one (1) passing test was performed in 2024. The Type A Riprap volume was processed and stockpiled in 2023 by Broken Arrow and a total of 14,183 cubic yards was available for use. A total of 6,735 cubic yards was required for Phase 6 Cover placement and therefore, a minimum of one (1) gradation test was required. One (1) passing gradation test was performed in 2024. The Type B Riprap volume was processed and stockpiled in 2023 and 2024 by Broken Arrow totaling approximately 30,547 cubic yards and the amount required for placement on the Phase 6 Cover project was 18,858 cubic yards. A minimum of two (2) gradation tests were required and two (2) passing gradation tests were performed in 2024 in addition to previous passing gradation tests performed in 2023. Copies of the supporting testing documentation and calibration certificates for the Quality Control equipment are on file. 3.4 Corrective Actions No corrective actions were required for this work element. 3.5 Field Changes No modifications to the plans, specifications or the CQA/QC Manual were performed for this work element. 4.0 COVER ROCK PLACEMENT 4.1 Construction Activities 4.1.1 General In general, all Cover Rock Materials construction activities were observed by Quality Control and documented in daily reports in accordance with the drawings and the CQA/QC Manual. Construction activities were also observed by representatives of QA and various EnergySolutions personnel (Project Manager, Project Engineer, QC Supervisor and QC Technicians) as well as the UDWMRC. CAW Phase 6 Cover Construction Report DUPLI CA1"E COPY December 16, 2024 Revision: 0 4.1.2 Filter Zone and Sacrificial Soil Placement The Type A & B Filter Zones and Sacrificial Soil layers were placed by Broken Arrow in accordance with the CQA/QC Manual and the construction drawings. Copies of the support documentation are on file, photographs of material placement in Appendix A, and the As-Built Drawings in Appendix B. Type B Filter Zone was placed over the constructed radon barrier at 6 inches thick on the top slopes and 18 inches thick on the side slopes using Haul Trucks and a Dozer. Quality Control observed the placement using grade stakes as required. Care was taken to protect the underlying radon barrier surfaces and the Type B Filter Zone material was handled in such a manner as to prevent contamination from waste material and segregation of finer materials. Quality Control observed placement of the Type B Filter Zone material to ensure that soil fines were not concentrated in localized areas. There were no instances of concentrated fines in the Type B Filter Zone placement process. Sacrificial Soil was placed over the Type B Filter Zone at 12 inches thick using Haul Trucks and a Dozer. Quality Control observed the placement using grade stakes as required. The Sacrificial Soil was handled in such a manner as to prevent contamination from waste material and segregation of finer materials. Quality Control observed placement of the Sacrificial Soil to ensure that soil fines were not concentrated in localized areas and no concerns were noted. Finally, Type A Filter Zone was placed over the constructed Sacrificial Soil in a 6- inch thickness, including over and up the outside ditch slope, using Haul Trucks and a Dozer. Quality Control observed the placement using grade stakes as required. Care was taken to protect the underlying surfaces and the Type A Filter Zone material was handled in such a manner as to prevent contamination from waste material and segregation of finer materials. Quality Control observed placement of the Type A Filter Zone to ensure that soil fines were not concentrated in localized areas. 4.1.3 Type A and B Riprap Placement The Type A & B Riprap layers were placed by Broken Arrow in accordance with the CQA/QC Manual and the construction drawings. Copies of the support documentation are on file, Photographs of material placement in Appendix A, and the As-Built Drawings in Appendix B. Type B Riprap was first placed over the Type A Filter Zone on the top slope at a 24-inch thickness using Haul trucks and a dozer. Quality Control observed the placement using grade stakes as required. Care was taken to protect the underlying surfaces and the Type B Riprap material was handled in such a manner as to prevent contamination from waste material and segregation of finer materials. Quality Control observed placement of the Type B Riprap material to ensure that soil fines were not concentrated in localized areas. CAW Phase 6 Cover Construction Report DUPLI C~TE COPY December 16, 2024 Revision: 0 Type A Riprap was then placed over the Type A Filter Zone on the side slope in a 24-inch thickness and 18 inches thick up and on the outside ditch slope using Haul trucks and a dozer. Quality Control observed the placement using grade stakes as required. Care was taken to protect the underlying surfaces and the Type A Riprap material was handled in such a manner as to prevent contamination from waste material and segregation of finer materials. Quality Control observed placement of the Type A Riprap material to ensure that soil fines were not concentrated in localized areas. 4.2 Quality Control Support Summary In general, Quality Control performed the following Quality Control activities during the processing and placement of the rock cover materials: • Verification of the lift thickness by grade stake. • Observation and inspection of material placement. • Verification that calibrations were performed as required. 4.3 Corrective Actions No corrective actions were required. 4.4 Field Changes No modifications to the plans, specifications or the CQA/QC Manual were performed for this work element. 5.0 COVER TERMINATION FOR FUTURE TIE-IN 5.1 General Temporary protection along the northern edge of the project was needed to protect the exposed radon barrier for future cover tie-in. The Cover termination also helps to simplify tie-in construction to future Class A West Cover phases. The Cover termination was detailed in the Construction Drawings but was not required by the CQA/QC Manual. 5.2 Construction Activities Following Phase 6 cover construction, the new Phase 6 Tie-In geotextile cover was placed along the northern edge of the project where the subsequent phase (i.e. Phase 7) will not be constructed for several years. The Phase 6 Tie-In cover was constructed, with 8 oz. nonwoven geotextile laid directly over the exposed Sx 1 o-s cm/sec radon ban-ier, a portion of the l xl o-6 cm/sec radon barrier (where the future tie-in will occur), and Type B Filter Rock to keep a clean surface. This geotextile was anchored in place using sandbags with a 5-year rating. No Quality Control testing was required but this construction activity was observed by Quality Control and by the Project Engineer and Project Manager. No corrective actions were required. The as-built conditions are shown in the As-Built Drawings in Appendix B. CAW Phase 6 Cover Construction Repo11 DUPLI OAT E COPY December I 6, 2024 Revision: 0 6.0 DRAINAGE DITCH BACKFILL AND GRADING 6.1 Construction Activities 6.1.1 General In general, all backfill activities of the previously excavated areas around the embankment (ditch backfill) were performed in accordance with the CQA/QC Manual. Construction activities were also observed by various EnergySolutions personnel (Project Manager, Project Engineer, QC Supervisor, QC Technicians, and QA Specialist). Ditch backfill construction included placement, testing, and approval of all clay lifts as discussed below. Successful final surveys were performed as required. 6.1.2 Clay Borrow Clay was excavated from an approved location on EnergySolutions' property in Section 5. The approved clay borrow site was cleared and grubbed as required. The clay material used for the CAW cover project met the required soil classification as required by the CQA/QC Manual. In addition, the clay material did not contain debris, vegetation, or any other deleterious material. Roughly 5,247 cubic yards of clay material was placed. Quality control classification tests were required to be performed at a rate of one test per 5,000 cubic yards: therefore, at least two (2) classification tests were required, and three (3) passing tests were performed. Proctors were required at one (1) test per 100,000 square feet and a total of three (3) proctor tests were performed. 6.1.3 Ditch Backfill Placement and Compaction All lifts had a loose lift thickness of less than or equal to 9 inches. Quality Control verified the thickness of each lift ofradon barrier at all key control points by GPS inspection in accordance with the Variance approved and discussed above in Section 2.1.4. All lifts were compacted to at least 95 .0 percent of a Standard Proctor. Quality control density tests were required to be performed at a rate of one test per every I 0,000 square feet compacted of a single lift of a specified material type. The ditch backfill area lift square footage for Phase 6 averaged about 6,000 square feet per lift for 26 lifts and so the required density tests averaged one (1) test per lift. EnergySolutions assumed a more conservative testing rate than one test per every 10,000 square feet per lift and performed thirty-four (34) passing density tests on compacted ditch backfill lifts. All ditch material backfill was placed, compacted, tested, and approved in accordance with the CQA/QC Manual requirements, and all density testing results met or exceeded the requirements of the CQA/QC Manual. CAW Phase 6 Cover Construction Report DUPLI C~TE COPY December 16, 2024 Revision: 0 6.1.4 Final Grading The ditch was graded to a tolerance of grade to 0.1 feet above grade and surveyed on a 50-foot grid as required by the CQA/QC Manual. During final surveying it was found that the final Type A Rip Rap and Type A Filter rock layers of the Phase 4 project extended over the Phase 4 ditch tie point and so a measurement at this ditch grade point location was not available. The next northernmost point of this tie in point on the 50-foot grid was surveyed and recorded as shown in the Drawing 24001-C02(1). Moreover, to avoid this issue with a future phase to the north of Phase 6 (i.e. Phase 7) the 50-foot grid was extended north of the design drawing's ditch point located at the Type A Rip Rap overlap of the ditch centerline to a location south of the new Phase 6 haul road ramp and north of the rock layer tie ins for future survey availability. The slope of the Phase 6 ditch was found to be ~0.11 % as per the design and the overall slope from the northern side of the Phase 6 ditch to the Class A West southwestern corner (i.e. Phase 4) was found to be ~0.11 % overall showing that the Phase 6 (and 4) ditch will drain as designed. The final surface was also rolled with a smooth drum roller. Final survey measurements for the cells were reviewed and approved by the Project Manager, Project Engineer, Quality Control Supervisor, and QA Specialist. The ditch surface was found to be regular and free flowing. 6.2 Quality Control Support Summary In general, Quality Control performed the following Quality Control activities during the construction of the radon barrier: • Verification of the grade using GPS to determine lift thickness placement. • Verification of proper lift thickness by survey. • Inspection and sampling of the borrow material placed and performance of Proctors and soil analysis. • Observation and inspection of backfill placement, compaction, and performance of in-place density tests. • Verification of survey points. • Verification that equipment has proper calibrations. 6.3 Corrective Actions No corrective actions were required. 6.4 Field Changes No field changes were required for Phase 6 construction. CAW Phase 6 Cover Construction Report DUPLI C,XTE: COPY December 16, 2024 Revision: 0 7.0 INSPECTION ROAD 7.1 Construction Activities 7 .1.1 General The Phase 6 road along the western side of the Class A West embankment was completed. 7.1.2 Road Base Material Road base material was provided by Broken Arrow and the required laboratory testing by CMT Technical Services. Approximately 312 cubic yards of road base was used for the Phase 6 road. Quality control gradation tests and Proctors were required to be performed at a rate of one test per 3,000 cubic yards: therefore, at least one (1) gradation test and one (1) Proctor were required. One (1) passing gradation test and one ( 1) Proctor were performed. 7.1.3 Subsurface Preparation The road subsurface was the top of the ditch backfill. Therefore, the subsurface did not require scarification and compaction per the CQNQC Manual specifications since it was already compacted to at least 95% of a Standard Proctor. Moreover, a geocomposite (geogrid/nonwoven geotextile, CombiGrid® ) was placed on the surface prior to the road base. 7.1.4 Road Base Placement and Compaction The road base material was spread and compacted (to at least 95% of a Standard Proctor or at least 92% of a Modified Proctor) to within the CQA required final thickness of 12 inches plus or minus 0.2 feet. Density testing was required at a rate of one test per every 200 cubic yards compacted. The volume placed was approximately 312 cubic yards and a total of two (2) passing density tests were required and successfully performed. 7.2 Quality Control Support Summary In general, Quality Control performed the following Quality Control activities during the construction of the radon barrier: • Verified that the road base produced met gradation, placement, and compaction specifications. 7 .3 Corrective Actions No corrective actions were required . 7.4 Field Changes No field changes were required. CAW Phase 6 Cover Construction Report DUPLI C~TE COPY December 16, 2024 Revision: 0 8.0 SETTLEMENT MONUMENT INSTALLATION 8.1 General Settlement monuments are placed on top of the final approved radon barrier and are then secured by the rock cover layers as they are built. Each monument was permanently labeled, flagged, and documented on a reference drawing as directed by the CQA/QC Manual. The monuments were surveyed on November 8, 2024. 8.2 Construction Activities Following approval of the final radon barrier surface the new Phase 6 settlement monuments, constructed per the CQA/QC Manual, were installed at their specified locations along the top slope of the Phase 6 area, flagged, initially surveyed, and documented as required. Survey results are on file. 9.0 AS-BUILT DRAWINGS As-built Drawings have been prepared from the project red-lined drawings and construction documentation. The attached phase specific As-built Drawings are found in Appendix B and contain the as-built information for the Class A West Phase 6 Cover Construction project. PREPARED BY: GARRETT Q. DUTSON, PE CLIVE FACILITY ENGINEER ENERGY SOLUTIONS CAW Phase 6 Cover Construction Repo11 DUPLI C,A5f E COPY December l 6, 2024 Revision: 0 APPENDIX A PROJECT PHOTOGRAPHS DUPLICATE COPY - Class A West Phase VI Cover Representative Photographs 08/26/24 -1 x 10·6 cm/sec Radon Barrier Placement. 08/29/24-1 x 10-5 cm/sec Radon Barrier Placement/Compaction. 1 DUPLICATE COPY t 09/11/24 -Radon Barrier 5 X 10-8 Placement. ~~~Ff!!'~w~; :--~-=.~.' '!:i-<_i ._,. ... ~ ;';,. ~-. .. . .. .... ':: --~~ ' ~,..; ,., 09/11/24 -Radon Barrier 5 X 10-8 Placement/Compaction. 2 DUPLICATE COPY 10/07 /24-Completed Radon Barrier and ongoing Ditch work. 10/07 /24-Completed Radon Barrier 5 X 10-8 surface. 3 DUPLICATE COPY 10/08/24 -Ditch material Placement. 10/08/24 -Type B Filter Placement. 4 DUPLICATE COPY 10/14/24-Sacrificial Soil Placement. 10/15/24-Type B Filter and Sacrificial Soil Placement. 5 DUPLICATE COPY 10/15/24-Type A Filter (Ditch line) and Sacrificial Soil Placement. 10/22/24-Sacrificial Soil and Type A Filter Placement on top slope. 6 DUPLICATE COPY 10/23/24-Type A Filter, Sacrificial Soil, and Type B Filter on side slope. 10/24/24 -Type B Rip Rap placement on top slope 7 DUPLICATE COPY 10/31/24-Top slope Rock Cover layers 11/4/24-Type A Rip Rap Placement on side slope. 8 DUPLICATE COPY 11/04/24 -Side slope Rock Cover layers. 11/05/24-Inspection Road placement with CombiGrid and Road Base. 9 DUPLICATE COPY 11/06/24 -Completed Tie In on side slope. 11/07 /24-Completed Tie In on top slope . 10 DUPLICATE COPY 11/08/24 -Completed Phase 6 Cover top slope including tie in. 11/08/24 -Completed Phase 6 Cover side slope including tie in. 11 DUPLICATE COPY APPENDIXB AS-BUILT DRAWINGS DUPLICATE COPY I .I{ E D C IB ---7 ---------------------------------1 I -=+ ::----L .. 7 .----~ ' i ' I i ' i ~~-----~ ,--------, ~------71" I I ' /I ' / I ' / cu.s's A WEST I y I I I ' I/ ,I .JL--------~ =-:--l= VITRO I ' / I I y I ~w I I I I A I )L ~ _: ~ ~ r __ _J i I I I I I I I ~ I ' I L ______________________________________ J CLASS A WEST FINAL COVER -PHASE 6 CLASS A WEST EMBANKMENT DRAWING NO. 24001-G01 24001-G02 24001-L01 24001 -L02 24001 -C01 24001 -CO2 24001 -C03 24001 -C04 24001 -C05 24001 -C06 24001 -C07 COVER PROJECT AREA LEGEND 800 ROAD PROPERTY LINE RAILROAD SECTION LINE PERMITED EMBANKMENTS ENERGYSOLUTIDNS PROPERTY 0 800 1600 ■--' DUPLICATE COPY DESCRIPTION TITLE SHEET CONSTRUCTION NOTES & SPECIFICATIONS PROJECT SITE MAP PHASE INFORMATION MAP PHASE 6 PROJECT PLAN, 1 OF 2 PHASE 6 PROJECT PLAN, 2 OF 2 SECTIONS AND DETAIL S, 1 OF 3 SECTION S AND DETAILS, 2 OF 3 DETAILS -TIE-IN BETWEEN PHASES DITCH CONSTRUCTION SEQUENCE DETAILS SECTIONS & DETAILS, 3 OF 3 ENERGYSOLUTIONS CLIVE F ACIUTY 1-80 EXIT •s UTAH VICINITY MAP C 0TH I ~ ~ (.) ~ t; t:, I :::, ~ ~ ~ co ~ ~ .., u"' i a: ~ CL e ~ ~ ~ «) ~s§~ ~ Q. "-I ...___' L Q,: I ~a~B~ ~,. u:x::::> ~ (/)...J(/) -z<ww ~ g ~ E~ ::::i I-_J " ...JI-(.) 0 (/) S I:'.?~ ~ < w z (/) w s (.) UTSON AS NOTED 24001 G01 E OC) I- C IB I- ~ I T -z- CONSTRUCTION NOTES & SPECIFICATIONS GENERAL: 1. THE CONTRACTOR WILL PERFORM ALL RELEVANT WORK ELEMENTS TO THE SPECIFICATIONS CONTAINED IN THE "APPROVED LLRW/11a(2) COA/OC MANUAL". T A COPY OF THE RELEVANT SECTIONS OF THE MANUAL WILL BE PROVIDED TO THE CONTRACTOR. 2. THE OWNER WILL PROVIDE ALL QUALITY CONTROL TESTING, UNLESS OTHERWISE SPECIFIED IN THE CONTRACT SCOPE OF WORK. 3. THE CONTRACTOR SHALL BE RESPONSIBLE FOR EXAMINING THE PROJECT AREA AND SITE CONDITIONS AND SHALL NOTIFY THE OWNER'S REPRESENTATIVE OF CONDITIONS DETRIMENTAL TO THE PROPER AND TIMELY COMPLETION OF THE WORK. 4. THE CONTRACTOR SHALL IDENTIFY ALL REQUIRED LINES, LEVELS AND DATUM PRIOR TO CONSTRUCTION. 5. THE CONTRACTOR SHALL PROVIDE ALL SURVEY SUPPORT REQUIRED, AS DESCRIBED IN THE CONTRACT SCOPE OF WORK. THE OWNER WILL VERIFY AND APPROVE WORK AS DESCRIBED IN THE "APPROVED LLRW/11e(2) COA/OC MANUAL". 6. THE OWNER WILL PREPARE AND PROVIDE AUTOCAD CONSTRUCTION SURFACES TO THE CONTRACTOR. THE CONTRACTOR SHALL COORDINATE WITH THE OWNER TO FIELD VERIFY THE SURFACE DESIGNS. 7. THE CONTRACTOR SHALL PROTECT EXISTING MONITORING WELLS, LYSIMETER MANHOLES, PROJECT BOUNDARY FENCES AND OTHER STRUCTURES AS IDENTIFIED BY THE OWNER. ANY DAMAGE CAUSED BY THE CONTRACTOR SHALL BE IMMEDIATELY REPORTED TO THE OWNER'S REPRESENTATIVE. CULVERTS llfHEN SPECIFIED}; & 8. CULVERTS SHALL BE CORRUGATED HOPE N-12, SMOOTH INSIDE WALL, WATER TIGHT PIPE, UNLESS OTHERWISE APPROVED BY THE OWNER. 9. CULVERTS SHALL BE BEDDED IN GRAVEL, UNLESS OTHERWISE APPROVED BY THE OWNER. 10. BACKFILL SHALL BE SELECT MATERIAL PLACED IN 9" MAXlt.lUM LOOSE LIFTS AND COMPACTED TO A MINIMUM OF 95¾ OF THE STANDARD PROCTOR. 11 . A MINIMUM OF 3 FT OF COMPACTED FILL (INCLUDING ANY ROAD BASE) SHALL BE PLACED OVER CULVERTS PASSING BENEATH ROADS, UNLESS OTHERWISE APPROVED BY THE OWNER. HAUL RAMPS: 12. ACCESS HAUL RAMPS SHALL BE CONSTRUCTED USING APPROVED 1x10-a RADON BARRIER MATERIAL. 13. RAMPS SHALL BE FIELD DETERMINED DEPENDING ON SITE CONDITIONS. 14. RAMPS SHALL MATCH OR EXCEED THE HEIGHT OF ADJACENT RUNOFF CONTROL BERMS. 15. PLACE AND COMPACT FILL MATERIAL TO t,UNlt.llZE RUTTING AND PROTECT ANY UNDERLYING EMBANKMENT LINER, RADON BARRIER OR OTHER COVER LAYERS. 16. PLACE SUFFICIENT ROCK COBBLE AT BASE OF RAMP TO CREATE A CONSTRUCTION ENTRANCE (TO MINIMIZE TRACKING MATERl,t.L ONTO THE EMBANKMENT). OWNER WILL PROVIDE BUT NOT DELIVER THE ROCK COBBLE. 17. REMOVED RAMP MATERIAL MAY BE REUSED FOR NEW RAMPS OR FOR CONSTRUCTION OF 1><10-6 RADON BARRIER, BUT ONLY WITH PRIOR APPROVAL FROM THE OWNER'S REPRESENTATIVE. 18. IF REMOVED RAMP MATERIAL CANNOT BE REUSED, STOCKPILE IT WITHIN THE CONTROLLED AREA AT A LOCATION PROVIDED BY THE OWNER'S REPRESENTATIVE. DRAINAGE DITCH Fill· & 19. DRAINAGE DITCH FILL MATERIAL SHALL BE NATIVE CLAY BORROW FROM AN APPROVED SOURCE. 20. FILL MATERIAL SHALL BE PLACED IN 9" MAXIMUM LOOSE LIFTS AND COMPACTED TO A t.llNIMUM OF 95" OF THE STANDARD PROCTOR. 21. THE OWNER WILL PROVIDE THE CONTRACTOR UPON REQUEST, CURRENT TOPOGRAPHICAL SURVEY INFORMATION OF THE SURFACE SURROUNDING THE EMBANKMENT FOR USE IN VERIFYING FILL QUANTITIES. 1 I 2 I ~ T 4 PROVISIONAL DITCHES; 22. FINAL DITCH AREAS THAT CANNOT BE COMPLETED BETWEEN PHASES SHALL BE FILLED WITH COMPACTED CLAY MATERIALS AND GRADED TO COLLECT ANO MOVE RUN Off WITHOUT EXCESSIVE PONDING. 23. FILL MATERIAL, THAT WILL NOT BE REMOVED FOR SUBSEQUENT CONSTRUCTION, SHALL BE PLACED IN 9" t.lAXIMUM LOOSE LIFTS AND COMPACTED TO A MINIMUM OF 95¾ OF THE STANDARD PROCTOR. 24. ANY FILL MATERIAL PLACED DIRECTLY ON TOP OF COMPLETED RADON BARRIER SHALL BE APPROVED RADON BARRIER MATERIAL, EITHER h 10-a OR 5x10-a DEPENDING ON THE UNDERLYING MATERIAL. 25. THE CONTRACTOR MAY USE WOVEN OR NON-WOVEN GEOTEXTILE AS A SEPARATION BARRIER BETWEEN COMPLETED COVER LAYERS ANO TEMPORARY FILL TO FACILITATE FUTURE REMOVAL OF TEMPORARY FILL MATERIALS. 26. FILL AND GRADING SHALL BE FIELD DETERMINED, DEPENDING ON FIELD CONDITIONS AND EXTENTS OF COMPLETED COVER LAYERS. INSPECTION/HAUL ROAD (EXCLUDING ON CELL HAUL ROADS\; 27. HAUL ROADS SHAIJ. BE CONSTRUCTED WITH OWNER APPROVED ROAD BASE MATERIAL. 28. HAUL ROADS SHAIJ. HAVE A MINIMUM WIDTH OF 15 FT. 29. TURNOUTS SHALL BE SIZED, CONSTRUCTED AND LOCATED TO ALLOW THE SAFE PASSING OF ALL CONSTRUCTION EQUIPMENT USED BY THE CONTRACTOR. 30. THE CONTRACTOR MAY, lf!TH PRIOR OWNER APPROVAL, "OVER CONSTRUCT" THE HAUL ROADS AND TURNOUTS AT THE CONTRACTOR'S EXPENSE. 31. THE CONTRACTOR SHALL PERFORM SURFACE GRADING (CUT & FILL) AND COMPACTION TO CONSTRUCT A FIRM SUBGRADE. SUBGRADE COMPACTION SHALL BE TO A MINIMUM OF 95,; OF THE STANDARD PROCTOR. 32. ROAD BASE SHALL BE PLACED IN 12" MAXIMUM LOOSE LIFTS AND COMPACTED TO A MINIMUM OF 95::C: OF THE STANDARD PROCTOR OR EQUIVALENT MODIFIED PROCTOR. 33. THE HAUL ROAD SHALL BE CROWNED WITH A MINIMUM 2::C: CROSS SLOPE. 34. THE CONTRACTOR SHALL BE RESPONSIBLE TO OPERATE ON THE ROAD SUCH TO MINIMIZE DAMAGE AND SHALL MAINTAIN AND REPAIR THE HAUL ROAD AS NEEDED. 35. THE CONTRACTOR SHALL BE RESPONSIBLE TO PROVIDE DUST CONTROL AND MAY APPLY WETTING AGENTS OR SURFACE TREATMENTS lf!TH PRIOR OWNER APPROVAL. RUNOFF CONTROL BERM, REMOVAL fBY OlfNER}: 36. THE OWNER lf!LL EXCAVATE, HAUL AND DISPOSE OF EXCESS MATERIAL AT THE TOE OF THE EMBANKMENT AND THE RUNOFF CONTROL BERMS IN TWO STAGES AS DEPICTED ON SHEET COB. 37. THE FIRST PHASE OF REMOVAL WILL BE COMPLETED PRIOR TO THE CONTRACTOR PLACING RADON BARRIER MATERIAL ON THE SIDE SLOPES. 38. THE SECOND PHASE OF REMOVAL WILL BE COMPLETED AFTER THE FIRST LIFT OF lXto-• RADON BARRIER MATERIAL IS PLACED OVER THE ENTIRE PROJECT AREA. TIE-IN PROTECTION ('WHERE APPLICABLE}; 39. GEOSYNTHETIC MATERIALS SHALL BE EITHER 30 MIL LI.PDE GEOMEMBRANE OR 8 OZ WOVEN GEOTEXTILE, UNLESS OTHERlfISE APPROVED BY THE OWNER. 40. SANDBAGS SHALL BE RED DURABAG8 OR OWNER APPROVED EQUIVALENT. 41. TIE-IN PROTECTION WILL ONLY BE INSTALLED ALONG THE NORTHERN BOUNDARY OF THE PHASE 6 PROJECT. & 42. SANDBAG SPACING IS ASSUMED TO BE 3 FT BETWEEN BAGS ALONG THE GEOSYNTHETIC MATERIAL EDGES AND EVERY 5 FT OR AS NEEDED AT GRADE CHANGES. AN ALTERNATIVE ANCHORING PLAN OR SANDBAG PLACEMENT PLAN MAY BE IMPLEMENTED WITH THE OWNER'S APPROVAL. 43. TIE-INS ALONG THE WEST BOUNDARIES OF THE PHASES DO NOT REQUIRE PROTECTION. ~ oup LI CATE <;OPY T 5 T I fl I tf . ~oiFESSJO,V~ ~ ie 11/lb)_'I ~, No. 189706 11 7-3 ---i'ffd' 6 E - D Cl t - B - ! ~ >-~ ~ ~ ..., z u -0 ii! u t; "-I Q: :, 0 U> 0 J!: Z < I.. (I) 0 ,0 z z Ii: ..,,, Q 8 &: ~ ~ a: ~ CL a: e ~ lfilgl§llii ... ~1· ...... ....................... LI.I ~~ti~ N ... N ~ n..., ~ ~ U) S~~~ VI z 0 ~ Cl. "-' I ~~ ~ ; U 0 r.A:n ~ ~~~ ! GI~ 0:: <( w Z VI w s u ~ u i.:: u w Bi :c old~ => VI w . 13w z~ ..J zO 0 5 :::, 0:: Iii z 0 u ~UTSON 5'.'"liooTH ---G. DUTSON AS NOTED 1'5'2/19/24r~ 24001 G02 E D C B 1 ' I --__J t.4AIN SITE ACCESS ROAD COUNTY ROAD 2 NORTH WATER TOWER SECURITY OFFICE (ADt.4IN BUILDING) 3 VITRO 4 □ SOUTH ACCESS GATE STOCKPILE AREAS TO Et.4BANKt.4ENT ROUTE (~2.7 t.4ILES RT) "--7---- ..., 1 PHASE 1 -If) -,( VI / I i ___ _/_ I '-. V PHASE 2 / >---< 1---------1- / CLASS/ A WEST ', / ,;,:,,, I / ~"'<, ---7- / ~~',' " I / / ~i~ PHASE 4 )'.-------~,~+ -~ CONTRACTOR FIELD OFFICE AREA -_MIXED --;7( _ WASTE-< I -----~ ------ LARW / I ----< -~ "'' ~-------;{ " / I " 11e(2) / I I '--/ I ~--4. ---- ~ -+ CLAY HAUL ROUTE (~2.4 t.41LES RT) CLAY BORROW SOURCE 10 Ill, .~)~';:;r ~~~K;I~~ ROCK PROJECT AREA COUNTY ROAD ' JP.~- SOUTHWEST SITE __/ • LJ S:U;HWEST P:N: ---- ACCESS GATE WATER TOWER 500 0 500 1000 --··-------- DUPLICATE COPY C ~ 5 "" ::, " ~ ~ z i ~ ~ 0 (.) ::, u 5 "-'f ct:: ::::> a ~e;~ :~u~ 1/)"' u z ~ er !:l a. a::: e o ~ ~ ~: S-~ ~ ::c: ~ 0.. "-I ' ~ ~ ~5~:x: ~pg~g r~ !1i -;;j_ ,-u..i "!"'~~Q~U> t-~ w-::, -, _J " ....1 1-~U ~ ~~o.. QC < L,J Z VI L,J s ~u 24001 101 E D C B PHASE SPECIFIC ACCESS RAMP 1 LICENSED WASTE FOOTPRINT 2 I I ~DESIGN W ~ (TYPICAL) '5TE BREAKS 1 x10-5 RADON BARRIER PLACEMENT LIMITS (TYPICAL 1/ 1/ /1/ 1/ / / / I A 4 " " " -----.------ ' -l : I I ); I I I I I I I I PHASE 5 I I i COMPLETED (2023) / I / I I I I I I I I I : I I I I I I I I I I I I I \ I r /; i , ' I 11 1 \f I // : : : ', I I! I I I / : I I " I I I I / I I " I / / / i / " PHASE 1 / / / PHASE 4 / I PHASE 3 PHASE 2 I '--(COMPLETED 2018) / I / I / / I COMPLETED (2022) / : (COMPLETED 2021) (COMPLETED 2019) : '--I , , , , I / I I " I I I I I / I I " I I 11 I / : : " I I I I I I / I I " I I I / : : " I I I I I / ' ' ' I '\ !:1 ;~----------~------------,-------------L ----------~~,,: \ / I I I '( I I // : I : "" I I I / I I I " I I I I I II / I I I " ii ~ I I I '-- [~----------------' ___ -------' ---=-=r----' __ -----------=-GJ ~ ------------7----------~ --------------.,:;-:VER7 ---------~ ----------....._ ----------- INSPECTION/HAUL ROAD DRAINAGE DITCH 100 0 100 200 -··------ DUPLICATE COPY .K Cl fi "' (.) i ~ ~ u ::::, ~ L£. cp g 0 (/)"' z < t; 0 <O ~ ~ "'0"' i 0: ~ n. ~ ~ ~ ~ ~i S _, I ~ ll. ll. ..._ I ;i . ....._, w Cl:'. z ::r: ~ ~ ~ ~~ ~.Pu:i~ ~ Ul-'°". Z < 0 W ~ 2E!z2::: 5 -...J " _,1-wU Sl ~ ~ >-~I ~ ffi<ll. z 1/) w ~ ~u 24001 L02 E C l 1x10-1 CM/SEC RADON BARRIER N 13,276.5 E 10,348.0 NEW ROAD TURNOUT FIELD DETERMINE SIZE & LOCATION (TYPICAL) RUNOFF CONTROL BERM REMOVED BY OWNER, (SEE ) 1111 1 I lfiljJ CONSTRUCTION NOTES) / I OWNER EXCAVATED AREA (HATCHED AREA, SEE NOTE 1) 'dJI± j H\IIIH-=---tJ.l>I MONITORING WELL GW-100 (RETAINED & PROTECTED) NEW PHASE 6 ISOLATION RUNOFF ~---'--' CONTROL BERM AND HAUL ROAD RAMP (SEE NOTE 2) PHASE 6 PROJECT BOUNDARY (FENCE OR ROPE, SEE NOTE 3) 20¾ SLOPE j ,1111111 i 1 x10-CM/SEC RADON BARRIER N 12,873.5 10,341 .2 JI ~, it ...J 0 VJ _, VJ Lu I~~ I I I PHASE 4 ISOLATION RUNOFF CONTROL BERM 1----' REMOVED AS PLANNED FOR THE CONSTRUCTION or PHASE 6 & 50 0 ........... ., 4 4X SLOPE 50 100 I 1 x 1 o-• RADON BARRIER LIMITS NOTES_;_ & 1. OWNER EXCAVATED, LOADED, HAULED AND DISPOSED OF EXISTING RUNOff CONTROL BERM AND SOILS IN THE DITCH AREA. REFER TO SECTION D, SHEET COG FOR SEQUENCING DETAILS AND NOTES 36-38 ON SHEET G02. 2. RUNOFF CONTROL BERMS WERE CONSTRUCTED BY THE OWNER. REFER TO DETAILS 5 AND 6, SHEET C07 roR ADDITIONAL INFORMATION. CONTRACTOR RETAINED AND PROTECTED THE PHASE 6 BERMS THROUGHOUT PHASE 5. 3. THE PROJECT (PHASE) BOUNDARY FENCING AND/OR ROPE WERE INSTALLED BY THE OWNER. 4. TOPOGRAPHY WAS DEVELOPED FROM A SURVEY PERFORMED ON OCTOBER 2, 2024. DUPLICATE COPY J{ & ~ ~ s ~ ~ ~ ~ w <> .... z i = 0 u :::, F .._ 'f g 0 Ill Ir Z < Iii Q "'~ !!; w u "' i ~ ~ a. e ~ "' ~ bl ;! 1 5i a.. "--I L ~ > w ::J > (.) 0 • u VJ ...J z < 0 Z .:= G: :::::, _, 1--- 0 ~ ~ ?: f5 < z VJ w ~ (.) "' "--0 ~~ ~~ a. w 1---~ u__J w (.) ~ a. 24001 COl E C B 1 NEW HAUL ROAD RAMP (SEE DETAIL 4, SHEET C07 FOR DETAILS) NEW ROAD TURNOUT FIELD DETERMINE SIZE c!c LOCATION (TYPICAL) DITCH INVERT CENTERLINE NEW I I INSPECTION/HAUL -----------ROAD r: (RETAINED c!c PROTECTED)~ I MONITORING WELL GW-100 I 1 & I 1 I I I I I I I I I ... 0.. 0 .J ti) ::c u I-0 ~ 0 l ! 1 X 10-• CM/SEC RADON BARRIER N 13,276.6 E 10,348.0 ·-·-·-·-·-·-· -_:_ ~ ----=== CJ? --20" SLOPE 1XH,1 CM/SEC RADON BARRIER N 12,873.5 E 10,341.2 ... I ... 0.. 0.. Oo .J .J ti) ti) w 0.. !:!o ti) I- 3 ... ti) < "":c Oc.. ..... ... z"" -::, I ,-!:!! ::> ......... 4 PHASE 6 PROJECT BOUNDARY (FENCE OR ROPE) -·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·- _ __:... --t . -----------=--=----=__:..--=-_ __:..-=--=.. ______ _ CJ? --4¾ SLOPE PREVIOUSLY CJ? • -, COMPLETED TIE-IN DURING PHASE 4 & -..._,,,,---.......__ JECT BOUNDARY NCE OR ROPE) ED BY OWNER ·-·-·-·-·-·-·-·-·-· ----==-=----=-== ------- .3 50 0 50 ,.__,,..,1.-... 100 I 1x10-1 CM/SEC RADON BARRIER N 12,860.2 E 10,993.3 ,. DUPLICATE COPY "o. "v.~~ ,<),j:l ~-<"~<".t,,, '"G' ., ov. ,<)-$: Qe. ~)- '1.r<" '-',i, .,J 0 J{ & C! ~ ~ .... z I = 0 (.) :::, ,= ... 'l' g 0 "' a: z < t=i Q CD ~ ~ ... u a: i ~ ~ n. e ~ <D ~ 1 Cl. I N ..... a:: 0 w :r: N,ct . 1--~: ..... ~ u .J ~ r ~ 24001 CO2 'A, C I TYPE A RIPRAP PERMANENT COVER SYSTEM 1' THICK TEMPORARY COVER 1' THICK (MIN) LINER PROTECTIVE COVER 2' THICK CLAY LINER SACRlflCIAL SOIL 5x10-s RADON BARRIER 1x10-6 RADON BARRIER WASTE LINER PROTECTIVE COVER CLAY LINER WASTE LIMIT (TOE or WASTE) /[& DITCH TRANSITION ZONE (DISTANCE VARIES) -+-----'<~ ....,L!..lm• • ·m· • ·rrr • 'ITT' • ·rrr • 'ITT' • 'ITT~1 1 SCALE: 1 "=8' -o• WASTE LIMIT DITCH CENTERLINE (INVERT) 4 INSPECTION ROAD CENTERLINE 20.3' MIN---+--------39.6' MIN------~ -----.......... -/ / DITCH TRANSITION ZONE ~20' MIN I I TCH INVERT i---+------4.7' MIN 1---25' MIN-----< DITCH Eta? COVER DETAIL C04 DITCH & ROAD DETAIL TYP. DITCH INVERT (ELEVATION VARIES) TYPE A FILTER MATERIAL VARY THICKNESS AS NEEDED IN DITCH TRANSITION ZONE (6" MIN) COMPACTED BORROW MATERIAL (DRAINAGE DITCH FILL) SCALE: 1"=16'-0" OWNER TO REMOVE OR REWORK & LINER PROTECTIVE COVER FOR RADON BARRIER CONSTRUCTION, FOLLOW LIFT BONDING SPEClflCATIONS FOR INTERFACE BETWEEN EXISTING AND NEW LAYERS DUPLICATE COPY INSPECTION ROAD 12" THICK +/-0.2' ROAD BASE COMPACTED TO 95% STANDARD PROCTOR OR TO 92% MODIFIED PROCTOR. A GEOCOMPOSITE WAS PLACED OVER THE DITCH FILL AND UNDER THE ROAD BASE. GROUND ELEVATION ~AX ( ) .r~"~UF.;31F VARIES _ ;111=111-" '-NATURAL SOIL ORROW MATERIAL (DRAINAGE DITCH FILL) COMPACTED TO 95% STANDARD PROCTOR upoT APPROVED ROAD BASE MATERIAL SPEClflCAIION· SIEVE SJZE 1-1/2 INCH i INCH I INCH ,. #16 #200 NOTES: PERCENT PASSING 100 75-95 62-82 35-58 16-36 0-18 1. REFER TO SHEET COS FOR CONSTRUCTION SEQUENCE AND DETAILS. C ~ ~ s ~ ~ ~ ~ z 0 ~ ::, <> ~ 1 ~ ~ ~ u al O t; ~ I o: ::, VI O 0: Z < ... t;; 0 U) z ~ ~ uJ Q u a:: ~ ~ 2s ~ ---. 0 <D w ~ ~11') :! ::c ~ 0.. ~ u.. I . wl'.k: ~p: > w :::; i5 <~ Pu w :::> ~ ;,! 0 • ozow ;:: G: ~ ~ 3 t;; (/) 0 Ow Z ~ ~ Q 1f < t; w w z (/) (/) w 5 u 24001 C03 E C 1 6" THICK A FILTER 18" THICK TYPE B FILTER ----- ZONE 12" THICK TEMPORARY COVER (CLAY) 24" THICK TYPE A RIP RAP 12" THICK ~ SACRIFICIAL SOIL 12" OF 5x10-8 CM/SEC RADON BARRIER 12" OF 1x10-6 CM/SEC RADON BARRIER DETAIL-SIDE SLOPE HTS TYPICAL SIDE SLOPE COVER DETAIL 18" THICK TYPE A RIP RAP TYPE A FILTER ZONE, THICKNESS VARIES, 6" MIN NATURAL GROUND OR IMPORTED DRAINAGE DITCH & BORROW MATERIAL DETAIL-DITCH OUTER SLOPE NTS TYPICAL PERIMETER DITCH COVER DETAIL 6" THICK A FILTER 6" THICK TYPE 4 TYPE 12" THICK SACRIFICIAL SOIL B FILTER ZONE ~-~ 12" OF 5x10-8 CM/SEC RADON BARRIER 12" THICK TEMPORARY COVER (CLAY) 24" THICK TYPE B RIP RAP 6" THICK TYPE A FILTER ZONE 6" THICK TYPE B flLTER ZONE 12" THICK TEMPORARY COVER (CLAY) TOP OF WASTE EL 4302.6' ~t.:t/,~-~•.;~~~~t:f~(.::.f~{i~~·~,.-f[~~-;i~}~;\~!~~r~~~:;rri._~~ DETAIL-TOP SLOPE HTS TYPICAL TOP SLOPE COVER DETAIL -----~7.2' -----; 12" OF 1x10-6 CM/SEC RADON BARRIER TOP OF COVER EL ~4309.3' 24" THICK TYPE A RIP RAP 12" THICK SACRIFICIAL SOIL ._,,_ 18" THICK TYPE B FILTER ZONE •• ,_.,, •• "J.:~,~~:'.,:·:;.':.,;•,,;.·;.,;:-:.;:~ ...... ,, .. , 24" OF RADON BARRIER ~ DETAIL-SHOULDER 1•=•· DUPLICATE COPY COVER MATERIAL GRADATIONS (ASTM C-136) TYPE A RIP RAP D 100<= 16 INCH Dgo <= 12 INCH D50 >= 4-1/2 INCH D10 >= 2 INCH D 5 >= NO. 200 SIEVE TYPE B RIP RAP D 1 oo<= 4-1 /2 INCH D50 >= 1-1/4 INCH D 1D >= 3/4 INCH D 5 >= NO. 200 SIEVE TYPE A FILTER ZONE D 100<= 6 INCH D70 <= 3 INCH D 50 <= 1.57 INCH {40 mm) D 15 <= .85 INCH (22 mm) D 10 >= NO. 10 SIEVE (2mm) D 5 >= NO. 200 SIEVE TYPE B FILTER 6: SACRIFICIAL SOIL & TYPE B FILTER &c SACRIFICIAL SOIL MATERIAL GRADATIONS ARE DETERMINED BY THE FOLLOWING SPECIFICATION: D15 FILTER D85 SOIL MUST BE < 5 050 FILTER 050 SOIL MUST BE <= 25 D15 FILTER 015 SOIL MUST BE >= 4 TYPE B FILTER MIN PERMEABILITY = 3.5 cm/sec SACRIFICIAL SOIL MIN MOISTURE O 15 otm = 3.5¾ C ~ t; "' :, <> ,_ ~ z I :=oou ~~g~ cnoo::z < ... t;; Q :~8i '!I II) 0 x ~ "' ~ a.ixeo ~ ~ ., S~ §~n u a. .... < 0 ~IN ~ ...,a::.I ~ ~ ~ ~< u O < I-' u t;:; ::> ~~ ~ ~ :~ I-.... ~ ::::i I C.,l~~u ffi < g z V) V) ..., s u 24001 C04 ~ E C iB 0:: w > 0 0 ...J 1-...J -:::, ::r ... :::; I ai z 0 l-o -< :! 0:: . ...J 4 ai z 0 l-o -< :! 0:: . ...J ------~7' ------+---~4' ---+----~6' -----------~7.5' -------------------------~21' --------------------1 1--~3' ~17'--------- :1t:: ~1·~ 0:: a, i _,' •-1 I '--:--:-.!....!....!.m..!....!...!.rn..!..!..!m•' 'TTl~fTT..:...:..:ITT.!...!....!.fTi..:....!...!.111..:....!....!-.-----.-----.'. ,-·-, 11 ~45' LLD PE OR NON-WOVEN GEOTEXTILE STRIP ( 16' WIDE) TO PROTECT LINER FOR FUTURE COVER TIE-IN SANDBAG (TYPICAL) ~15' HAUL ROAD -IN 1-IJH' '.°"t.lJH,l"IJIUNI ·••-111-.;~ .. IIIIIH'I-Kl'T- COVER CONSTRUCTION COVER CONSTRUCTION TIE-IN FOR FUTURE __ PHASE REIAOVE LLDPE LINER c!c SANDBAGS (SALVAGE FOR REUSE) ai REPAIR AND/OR RECONDITION, AND RE-TEST PREVIOUS PHASE IAATERIAL (SEE NOTE 2) REMOVE PREVIOUS PHASE MATERIAL (SEE NOTE 1) 9" MAX REPAIR AND/OR RECONDITION, AND RE-TEST PREVIOUS PHASE MATERIAL (SEE NOTE 2) 'I 1-1' ,_, I •-1' ,_,,, • '---:.-l..!...!.m!.Llml..!...!.;-;--;-1 I ,-1 I,_.. • • ,_,' '':'""';,!....!...!.m.t...L!:111..!....!...!.;-;-;.! 1 i~•, ,_ -·' ,_,' ·==m=rn.!..!...!.rn~TTT' ''ffi'' 'rn-, I,-,',_.'. TIE-IN PREPARATION ai ai ,-.-----.-.!....!.....!.l!I.!..' 'i-jT..!...!..'TTT.:..:..:.m..:...:..:rn~TTT.! ... .!...!.TTT.:...:....!.11'..:....!....!--,-----.-----;'' ,-------,------.-!...!...!.m.:...:...:.m~,--.------.·' ,-, ,----,' ·--.-----.------.:...:....!.1 ·11.!.....!..:.111~,' ,.! ''•. COMPLETED TIE-IN BETWEEN PHASES EP SECTION TIE-IN BETWEEN PHASES NTS DUPLICATE COPY TYPICAL STEPPED KEY-IN DETAIL FOR BOTH LAYERS or RADON BARRIER (SEE NOTE 1) STEPPED KEY-IN NOTES: 1. CONSTRUCTED KEY-INS BETWEEN PREVIOUSLY COMPLETED RADON BARRIER AND SUBSEQUENT RADON BARRIER (BETWEEN CONSTRUCTION PHASES) IN ACCORDANCE WITH THE COA/OC MANUAL & 2. REPAIR AND/OR RECONDITION RADON BARRIER MATERIAL AND AND TEST (PER LIFT SPECIFICATIONS). 3. THE TYPICAL STEPPED KEY SHOWN IS GENERIC. FIELD CONDITIONS MAY REQUIRE MULTIPLE STEPS. 4. "RADON B. LIMITS" DEPICTS THE FULL EXTENT or RADON BARRIER CONSTRUCTED AND TESTED PER CONSTRUCTION PHASE. 5. "RADON B. BUYOFF" INDICATES THE LIMITS or COMPLETED RADON BARRIER THAT HAVE BEEN OFFICIALLY APPROVED PER EACH CONSTRUCTION PHASE. 6. THE GEOSYNTHETIC COVER c!c SANDBAGS ARE ONLY INSTALLED ON THE NORTHERN EDGE or & THE PHASES. 7. PHASE 1 USED 30 MIL LLDPE ON THE TOP SLOPE AND B OZ GEOTEXTILE ON THE SIDE SLOPE. B. SEE SHEET G02 FOR SPECIFICATIONS. ~ ~ CII s __ z I ..JO u 5 ~ .... OlUO I ::, Ill 0:: Z < t;; 0 co ~ !\: u 0:: 25 ~ ... 0 U) Vl w ~ c.. z WI w< ~ I-CD ::::l Zw 2: ~ ;:: (.) I Vl < :! < Vl t;:; ~ 0 0 E C w 0 .... ,.... w (/) ........ ~ ~ ~-=- I w 0 .... ,.... w (/) t; t:: ..::! ~-=-I w ~ w<ii' ........ ~j ~-=-I LINER PROTECTIVE COVER 1x10-6 CM/SEC RADON BARRIER (FIRST LIFT) SACRIFICIAL SOIL 2 TYPE B FILTER CLAY LINER (RETAIN & PROTECT) OWNER TO REMOVE OR REWORK LINER PROTECTIVE COVER FOR RADON BARRIER CONSTRUCTION, FOLLOW LIFT BONDING SPECIFICATIONS FOR INTERFACE BETWEEN EXISTING AND NEW LAYERS & CLAY LINER (RETAIN & PROTECT) FIRST CUT (BY OWNER) EXISTING . (PRE-CONSTRUCTION) SURFACE, VARIES OWNER TO REMOVE OR REWORK LINER PROTECTIVE COVER FOR RADON BARRIER CONSTRUCTION, FOLLOW LIFT BONDING SPECIFICATIONS FOR INTERFACE BETWEEN EXISTING AND NEW LAYERS & 0:: :CW ~~~ _w_ or~ TYPE A RIRPAP TYPE A FILTER :::e.., "'z ~:J ..-.. ... 0:: (/) i.....w~ 01--0:: zz < ::,w > o::u~ I 4 EXISTING (PRE-CONSTRUCTION) SURFACE, VARIES EXISTING RUN Off MATERIAL ..... ri-----ITT...,ITT.,.TiTT""I. I CONTROL BERM & FILL ELEVATION VARIES .,,.L.r1"1==111==111==111==11 I .,..-,--11 ---~1'f 111==1 11-1 I I-', G) ...-n-11=-7:"r/7,.77,-r/7-T/'7'7 ..,..,,-/2-7 == == I 1-COVER/DITCH :::e .... "'z ~:J i...o::: vi" ...... w O>--iii: ZZ..: ::,w> o::u~ I /, /, ~ L r -111 -11 1_ , PREPARATION--FIRST 11 111 11 I 111-"NATIVE" SOIL -1 I 1==111=-' • SECOND CUT (BY OWNER) EL~ATION VARIES _____ ..,..(]-::ITT ITT.,.TiT,...... .... r1 ~11f -<"1 -11 1ffl-l I 1_111 I ll l LI' 111-11 ~-II I 111 -11 i-(2) . _ .1==11 1 / 1,11• RADON BARRIER & I l nE ru 111 111 -, CUT /EXCAVATION _ ==I I l==I I 1==1 , ,--==I I 1==1 1 1=--1' "NATIVE" SOIL DRAINAGE DITCH BORROW (FILL) MATERIAL COMPACTED TO 95% STANDARD PROCTOR (9" MAX LOOSE LIFTS) ~ INSPECTION ROAD 1 u.~ A'~tl.-~~- CUT 2ND _111 Ill ~ I 1-·. • 1 I ,lll . 11 1==11 DITCH FILL. COMPLETE 1° COVER & INSPECTION . . . Sl--'.. ROAD CONSTRUCT! -,11 Ii 1---------- I I 1-1 1 I "---"NATIVE" SOIL -,,,~,-_ .. _.-_-, ,-EXISTING 111-11 1-{PRE-CONSTRUCTION) SURFACE, VARIES DITCH CONSTRUCTION DETAIL SCALE: 1 "=8' -o• DUPLICATE COPY C ~ ~ <O (/) ~ /!:: ~ ~ §-<ti ::;! J: C u a. < w "-I u ' ~ ...__' ~ [5 ::, I ~ ::J1)8~ ~Puv,:::, ~ Vl..JZ , z<ow ~~Et;~ ::, ::, ...J t., ..J ,-. a::U 0 Vl 1--Ul w (/) >-~ z e ffi < 8 z (/) :r ~-H DUTSON BOOTH C06 .E ID C 1 2 4 PROJECT BOUNDARY _______ -J fENCE OR ROPE I ( I I ----------L--+---'--~--+-----1 x,o-s RADON BARRIER PLACEMENT EXTENTS -·~7 --i===:Jt:=;==r==i~~-~-sx,o-a RADON BARRIER PLACEMENT EXTENTS I I TYPE B FILTER PLACEMENT EXTENTS SAC SOIL PLACEMENT I :_1--+----EXTENTS I I _ _;~----TYPE A f lLTER ZONE BERM WAS REMOVED AS PLANNED fOR THE CONSTRUCTION Of PHASE 6 FINAL COVER I I I I I I L . I . PLACEMENT EXTENTS -4 - EX ISTING RUNOff CONTROL BERM REMAINED NORTH Of PHASE 6 ISOLATION BERM u APPROXIMATE TOE Of A,1 RUNOff CONTROL BERM RUNOFF BERM DE TAI L SCALE: 1 "=20'-0" APPROXIMATE TOE 1 Of ISOLATION BERM I I I / / \ PHASE 6 PROJECT BOUNDARY ! ---jJ_ _QNJE OR /07 / I & RUNOfF CONTROL BERM EDGE Of NEW HAUL/INSPECTION ROAD (SUBSEQUENT CONSTRUCTION PHASE) PHASE 6 ISOLATION BERM NORTHERN EDGE, THE HAUL ROAD RAMP HAS All BEEN BUILT I ----......._ ---------- TYPE A RIP RAP PLACEMENT EXTENTS HAUL ROAD RAMP (RADON BARRIER MATERIAL) DITCH INVERT END POINT & ~ / I t DITCH "" MATERO>C ~2 , FIELD DETERMINED EXTENT AND GRADING ;1---------OUTER EDGE Of DITCH (RIPRAP & fllTER MATERIAL) EXISTING SURFACE (PRE -CONSTRUCTION) CONTOUR LIN ES (TYPICAL) EDGE OF NEW HAUL/INSPECTION ROAD (INITIAL CONSTRUCTION PHASE) ----o--------a-Q:= BERM. BERM ELEVATION ~4274.2 PRMCT 9-0u,om / fENCE OR ROPE HAUL ROAD RAMP TYPICAL DETAIL ROCK RUNOff AREA {FIELD DETERMINED AREA & THICKNESS) PHASE 6 1X10-1 CM/SEC RADON / ~ BARRIER LIMITS ~ L'-V( .-d N 13,276.6 E 10,348.0 > EXISTING SURFACE CONTOUR LINES ISOLATION RUNOFF BERM DETAIL EXISTING SURFAC --,,--;-CONTOUR LINES & & SCALE: 1 "= 20' NOTES: & 1. RUNOff CONTROL BERMS CONSTRUCTED AND MAINTAINED BY THE OWNER. FIELD ADJUSTED THE BERMS, AS NEEDED WITH ENGINEERING APPROVAL. BERMS WILL DIVERT RUNOFF fROM ADJACENT AREAS fROM FLOWING ONTO RADON BARRIER AND/OR INTO THE COVER DRAINAGE DITCH. 2. RUNOff CONTROL BERMS CONSTRUCTED TO THE COA/OC MANUAL SPEClflCATIONS AND ARE AT LEAST 4 FT WIDE AT THE TOP. FIELD ADJUSTED THE CENTERLINE AND TOE AS NEEDED. 3. PROJECT BOUNDARY fENCE/ROPE INSTALLED AND t.4AINTAINED ARE ROPE, WITH APPROPRIATE RADIATION POSTINGS. 4. REfER TO CONSTRUCTION NOTES ON SHEET G02 fOR HAUL ROAD RAt.4P CONSTRUCTION AND MATERIAL SPECIFICATIONS. DUPLICATE COPY ~ ~ .., ::, <) ~ I ~ ~ l5 0 =, u i= I.&. <II Uo I c,:::, v, 0 C< z -( I.&. ti; Q :~8i '!) II) u :t ~ g; !!l 0.. a:: .... 0 6- S~ ~~.,, :! I (j a. "-tE. 0 I ' .,, ~ u,O::: ~ 2:u,VlI _.>-'<t (j O < I-• (.) t;:; ::, ~ v,_.a ~ § ~ ~~ ~ "-< :::i c,-'tijVl(.) ~ ~ ~ § E5 < ~ z V, V) ~ ~~ 24001 C07 b:.