ATTACHMENT_5_-_DRAWINGS.pdf

ATTACHMENT 5:

REFERENCE DESIGN

DRAWINGS

DECEMBER 2010 REVISED AUGUST 2012

CLOSURE AND POST CLOSURE CARE PLAN

FORT GORDON

SOLID WASTE PERMIT NUMBER: 121-010D(SL)

17TH STREET LANDFILL AND C&D ANNEX

RICHMOND COUNTY, GEORGIA

(REVISED JUNE 2013)

(REVISED APRIL 2016)

Channel

Pipe Outlet to Well-defined

9"

Section AA

A

Plan

A

No Well-defined Channel

Pipe Outlet to Flat Area-

A

13 ft

Plan

A

Section AA

9"

13 FT

Figure 6-24.3 - RIPRAP Outlet Protection (Modified From VA SWCC)

Filter non-woven geotextile

(Mirafi 180N or equal)

Filter non-woven geotextile

(Mirafi 180N or equal)

NOTES:

1. FULL FLOW CHARACTERISTICS:

FLOW RATE (Q) = 11.61 CFS

VELOCITY (V) = 11.97 FPS

TAILWATER (Tw) = <0.5 DIA.

2. APRON DIMENSIONS:

LENGTH (La) = 11 FT

HEADWALL WIDTH (W1) = 6 FT

DOWNSTREAM WIDTH (W2) = 13 FT

AVERAGE STONE DIA. (d50) = 6 INCHES

STONE DEPTH (D) = 9 INCHES

Channel

Pipe Outlet to Well-defined

9"

Section AA

A

Plan

A

No Well-defined Channel

Pipe Outlet to Flat Area-

A

13 ft

Plan

A

Section AA

9"

13 ft

Filter non-woven geotextile

(Mirafi 180N or equal)

Filter non-woven geotextile

(Mirafi 180N or equal)

NOTES:

1. FULL FLOW CHARACTERISTICS:

FLOW RATE (Q) = 3.99 CFS

VELOCITY (V) = 8.39 FPS

TAILWATER (Tw) = >0.5 DIA.

2. APRON DIMENSIONS:

LENGTH (La) = 11 FT

HEADWALL WIDTH (W1) = 6 FT

DOWNSTREAM WIDTH (W2) = 13 FT

AVERAGE STONE DIA. (d50) = 6 INCHES

STONE DEPTH (D) = 9 INCHES

Diversion diversion pipe outlet corrugated

Stabilized stakes dike

3:1

Diversion

Hold-down

Level section

4' min

Plastic

Min. 10' spacing

Top of

Inlet Detail

Outlet Pipe

1.5' min

3:1

0.5' min fill (island) hand-compacted

Top of

4' min

1' min channel ground

Natural

Channel

Pipe Outlet to Well-defined

9"

Section AA

A

Plan

A

No Well-defined Channel

Pipe Outlet to Flat Area-

A

13 ft

Plan

A

24"

6 ft

Section AA

9"

13 ft

Filter non-woven geotextile

(Mirafi 180N or equal)

Filter non-woven geotextile

(Mirafi 180N or equal)

NOTES:

1. FULL FLOW CHARACTERISTICS:

FLOW RATE (Q) = 13.34 CFS

VELOCITY (V) = 10.7 FPS

TAILWATER (Tw) = >0.5 DIA.

2. APRON DIMENSIONS:

LENGTH (La) = 11 FT

HEADWALL WIDTH (W1) = 6 FT

DOWNSTREAM WIDTH (W2) = 13 FT

AVERAGE STONE DIA. (d50) =6 INCHES

STONE DEPTH (D) = 9 INCHES

24"

6 ft

24"

6 ft

TABLE #1

NOTES:

- AREAS WITHOUT FINAL COVER THAT WILL BE EXPOSED FOR MORE THAN 3 MONTHS WILL BE PLANTED WITH

TEMPORARY GRASS

- SEEDING RATES ARE BASED ON 100% PURE LIVE SEED SCHEDULES FROM THE MANUAL FOR EROSION AND

SEDIMENT CONTROL IN GEORGIA

- A TEMPORARY COVER SHOULD BE USED WHEN PLANTING UNHULLED BERMUDA GRASS AND PENSACOLA

BAHIAGRASS

ANNUAL RYEGRASS

TEMPORARY SEEDING

FESCUE

BERMUDA GRASS-UNHULLED

BERMUDA GRASS-HULLED

PERMANENT SEEDING

PLANTINGCOVER (INCHES)PER ACRESEEDING

PENSACOLA BAHIAGRASS

BROWNTOP MILLET

VEGETATION PLAN

DATE OFDEPTH OFPOUNDS

0.25 - 0.5

0.25 - 0.5

0.25 - 0.5

0.25 - 0.5

0.25 - 0.5

0.25 - 0.5

YEAR ROUND

3/1 - 7/1

10/1 - 3/1

8/15 - 11/1

4/1 - 7/15

8/1 - 4/15

FERTILIZER REQUIREMENTS

SPECIES

BERMUDA GRASS-HULLED

SECOND

MAINTENANCE

NOTES:

A SPLIT THE APPLICATION WHEN HIGH RATES ARE USED

B APPLY WHEN PLANT GROW TO HEIGHT OF 2 TO 4 INCHES

C APPLY IN THE SPRING AFTER SEEDING

N-P-K = NITROGEN-PHOSPHORUS-POTASH

TABLE #2

RATERATEN-P-KYEAR

TOP-DRESSINGEQUIVALENT

NITROGEN ANALYSIS OR

10-10-10

6-12-12

FIRST

6-12-12

50-100

1.500 50-100

A

MAINTENANCE

SECOND

BERMUDA GRASS-UNHULLED FIRST

6-12-12

10-10-10

6-12-12

400 30

50-100

1.500 50-100

A,C

MAINTENANCE

SECOND

PENSACOLA BAHIAGRASS FIRST

6-12-12

10-10-10

6-12-12

400 30

50-100

1.500 50-100

B

MAINTENANCE

SECOND

FESCUE FIRST

6-12-12

10-10-10

6-12-12

400 30

50-100

1.500 50-100

A

CLOSURE/POST CLOSURE PLAN

ANNUAL POST-CLOSURE CARE COST ESTIMATE

(PRE-ESTABLISHED VEGETATION)

1.

2.

3.

4.

NOTES:

MOBILIZATION LS 1 $36,000 $36,000

EARTHWORK CY 60,000 $8 $480,000

TOPSOIL CY 16,000 $16 $256,000

MATTING AND SEEDING SF 525,000 $0.26 $136,500

NOTES:

CLOSURE COST ESTIMATE

ASSUME TWO (2) FOOT MATERIAL WILL BE OBTAINED WITHIN A FIVE MILE RADIUS

ALL UNIT PRICES INCLUDE INSURANCE COSTS

ALL COSTS ARE IN 2016 DOLLARS

CLOSURE COSTS WILL BE ADJUSTED FOR INFLATION EVERY YEAR.

1.

2.

3.

ASSUMES THE DISTURBANCE OF A CUMULATIVE AREA OF 0.25 ACRES/YEAR.

ASSUMES A MOBILIZATION FEE OF $250.

ASSUMES SEMI-ANNUAL SAMPLING OF SIX SURFACE MONITORING LOCATIONS AND 16

GROUNDWATER MONITORING WELLS.

ASSUMES QUARTERLY METHANE MONITORING AT NINETEEN LOCATIONS.

ROUTINE INSPECTIONS/REPAIRS: ASSUME THE REPLACEMENT OF 0.25 ACRES OF TOPSOIL AND

CLAY MATERIAL ONCE A YEAR.

CUTTING VEGETATION AT LEAST 2 TIMES PER YEAR.

ALL COSTS ARE IN 2016 DOLLARS.

4.

6.

BMPs LS 1 $80,000

$80,000

METHANE MONITORING PROBES EA 17 $34,000

METHANE VENTS LVF 630

$120

$75,600

ENGINEERING AND CLOSURE CERT (10%) LS 1

$113,930

$113,930

SUB-TOTAL $1,255,230

SUB-TOTAL X 15% CONTINGENCY = TOTAL $188,285

TOTAL $1,443,515

7.

$2,000

GROUNDWATER MONITORING WELLS EA 9

$4,800

$43,200

ITEM UNITS QUANTITY UNIT PRICE TOTAL

REPAIR 5 ACRES OF SOIL COVER YEARLY YR 5 $20,000 $100,000

ROUTINE EROSION CONTROL YR $5,000 $150,000

MOWING 2 TIMES / YEAR YR $2,000 $60,000

SURFACE WATER MONITORING $25,000 $75,000

WATER QUALITY REPORTS

$5,000

$150,000

METHANE MONITORING $240,000

TOTAL $2,085,000

AVERAGE YEARLY COST $69,500

$8,000

ITEM UNITS QUANTITY UNIT PRICE TOTAL

MAINTENANCE

FINAL COVER REPAIR YRS 1-5

REPAIR 1 ACRE OF SOIL COVER YEARLY YR 25 $5,000 $125,000

FINAL COVER REPAIR YRS 6-30

SED POND CLEANOUT EVERY YEAR LS 30 $4,500 $135,000

SURFACE WATER MANAGEMENT

GROUNDWATER MONITORING $35,000 $1,050,000

MONITORING

YR

YR

YR

YR

5.

NSA FACILITY

5'-0"

MIN. 3'-0"

Plan Included

Page # Y/N

CE203 Y 1. The applicable Erosion, Sedimentation and Pollution Control Plan Checklist established by the Commission as of January 1 of the year in which the land-disturbing activity was permitted.

(The completed Checklist must be submitted with the ES&PC Plan or the Plan will not be reviewed)

ALL Y 2. Level II certification number issued by the Commission, signature and seal of the certified design professional.

(Signature, seal and Level I I number must be on each sheet pertaining to ES&PC plan or the

Plan will not be reviewed)

ALL Y 3. The name and phone number of the 24-hour local contact responsible for erosion, sedimentation and pollution controls.

CE201 Y 4. Provide the name, address and phone number of primary permittee.

CE201 Y 5. Note total and disturbed acreage of the project or phase under construction.

N/A N 6. Provide land lot and district numbers for site location. Describe critical areas and any additional measures that will be utilized for these areas. (Army Installation does not apply)

C001 Y 7. Provide vicinity map showing site’s relation to surrounding areas. Include designation of specific phase, if necessary.

ALL Y 8. Graphic scale and north arrow.

CS101 OR CG101 Y 9. Existing and proposed contour lines with contour lines drawn at an interval in accordance with the following:

N/A N 10. Boundary line survey.

CE202 Y 11. Delineation and acreage of contributing drainage basins on the project site.

N/A N 12. Delineation of on-site wetlands and all state waters located on and within 200 feet of the project site. (NONE)

N/A N 13. Delineation of the applicable 25-foot or 50-foot undisturbed buffers adjacent to state waters and any additional buffers required by the Local Issuing Authority . Clearly note and delineate all areas of impact.

CE202 Y 14. Delineate all sampling locations, perennial and intermittent streams and other water bodies into which storm water is discharged.

N/A N 15. Storm-drain pipe and weir velocities with appropriate outlet protection to accommodate discharges without erosion.

Identify/Delineate all storm water discharge points.

CE100's Y 16. Soil series for the project site and their delineation.

CE201 Y 17. Identify the project receiving waters and describe all adjacent areas including streams, lakes, residential areas, wetlands, etc. which may be affected.

N/A N 18. Any construction activity which discharges storm water into an Impaired Stream Segment, or within 1 linear mile upstream of and within the same watershed as, any portion of an Biota Impaired Stream Segment must comply with Part III. C. of the

Permit. Include the completed Appendix 1 listing all the BMPs that will be used for those areas of the site which discharge to the Impaired Stream Segment.

N/A N 19. If a TMDL Implementation Plan for sediment has been finalized for the Impaired Stream Segment (identified in item 18 above) at least six months prior to submittal of NOI, the ES&PC Plan must address any site-specific conditions or requirements included in the TMDL Implementation Plan.

REPORT Y 20. Provide hydrology study and maps of drainage basins for both the pre- and post-developed conditions.

ALL Y 21. Initial date of the Plan and the dates of any revisions made to the Plan including the entity who requested the revisions.

CS101 Y 22. The limits of disturbance for each phase of construction.

N/A N 23. Limit of disturbance shall be no greater than 50 acres at any one time without prior written authorization from the EPD

District Office. If EPD approves the request to disturb 50 acres or more at any one time, the plan must include at least 4 of the BMPs listed in Appendix 1 of this checklist.

(A copy of the written approval by EPD must be attached to the plan for the plan to be reviewed.)

CE300's Y 24. Provide a minimum of 67 cubic yards of sediment storage per acre drained using a temporary sediment basin, retrofitted detention pond, and/or excavated inlet sediment traps for each common drainage location. Sediment storage volume must be in place prior to and during all land disturbance activities until final stabilization of the site has been achieved. A written rationale explaining the decision to use equivalent controls when a sediment basin is not attainable must be included in the plan for each common drainage location in which a sediment basin is not provided. Worksheets from the Manual must be included for structural BMPs and all calculations used by the design professional to obtain the required sediment storage when using equivalent controls.

N/A N 25. Use of alternative BMPs whose performance has been documented to be equivalent to or superior to conventional BMPs as certified by a Design Professional (unless disapproved by EPD or the Georgia Soil and Water Conservation

Commission). Please refer to the Alternative BMP Guidance Document found at www.gaswcc.org.

CE301 N 26. Best Management Practices to minimize off-site vehicle tracking of sediments and the generation of dust.

N/A N 27. BMPs for concrete washdown of tools, concrete mixer chutes, hoppers and the rear of the vehicles. Washout of the drum at the construction site is prohibited.

CE202 Y 28. Provide BMPs for the remediation of all petroleum spills and leaks.

CE100's Y 29. Location of Best Management Practices that are consistent with and no less stringent than the Manual for Erosion and

Sediment Control in Georgia. Use uniform coding symbols from the Manual, Chapter 6, with legend.

CE201 Y 30. Description of the nature of construction activ ity .

CE100's Y 31. A description of appropriate controls and measures that will be implemented at the construction site including: (1) initial sediment storage requirements and perimeter control BMPs, (2) intermediate grading and drainage BMPs, and (3) final

BMPs.

CE203 Y 32. Description and chart or timeline of the intended sequence of major activ ities which disturb soils for the major portions of the site (i.e., initial perimeter and sediment storage BMPs, clearing and grubbing activ ities, excavation activities, utility activities, temporary and final stabilization).

REPORT Y 33. Description of the practices that will be used to reduce the pollutants in storm water discharges.

N/A N 34. Description of the measures that will be installed during the construction process to control pollutants in storm water that will occur after construction operations have been completed.

CE201 Y 35. Design professional's certification statement and signature that the site was visited prior to development of the ES&PC

Plan as stated on page 14 of the permit.

CE201 Y 36. Design professional's certification statement and signature that the permittee’s ES&PC Plan provides for an appropriate and comprehensive system of BMPs and sampling to meet permit requirements as stated on page 14 of the permit.

CE201 Y 37. Certification statement and signature of the permittee or the duly authorized representative as stated in section V.G.2.d. of the state general permit.

CE201 Y 38. An estimate of the runoff coefficient or peak discharge flow of the site prior to and after construction activities are completed.

CE202 Y 39. Indication that non-exempt activ ities shall not be conducted within the 25 or 50-foot undisturbed stream buffers as measured from the point of wrested vegetation without first acquiring the necessary variances and permits.

CE201 Y 40. Indication that the design professional who prepared the ES&PC Plan is to inspect the installation of the initial sediment storage requirements and perimeter control BMPs within 7 days after installation.

CE202 Y 41. Indication that amendments/rev isions to the ES&PC Plan which have a significant effect on BMPs with a hydraulic component must be certified by the design professional.

CE202 Y 42. Indication that waste materials shall not be discharged to waters of the State, except as authorized by a Section 404 permit.

CE202 Y 43. Documentation that the ES&PC Plan is in compliance with waste disposal, sanitary sewer, or septic tank regulations during and after construction activ ities have been completed.

CE203 Y 44. Provide complete requirements of inspections and record keeping by the primary permittee.

CE202 Y 45. Provide complete requirements of sampling frequency and reporting of sampling results.

CE203 Y 46. Provide complete details for retention of records as per Part IV.F. of the permit.

CE202 Y 47. Description of analy tical methods to be used to collect and analyze the samples from each location.

CE201 Y 48. Appendix B rationale for outfall sampling points where applicable.

CE201 Y 49. Cleary note statement in bold letters- "The escape of sediment from the site shall be prevented by the installation of erosion and sediment control measures and practices prior to, or concurrent with, land disturbing activities."

CE201 Y 50. Cleary note maintenance statement in bold letters - "Erosion control measures will be maintained at all times. I f full implementation of the approved plan does not provide for effective erosion control, additional erosion and sediment control measures shall be implemented to control or treat the sediment source."

CE201 Y 51. Clearly note the statement in bold letters - "Any disturbed area left exposed for a period greater than 14 days shall be stabilized with mulch or temporary seeding."

CE300's Y 52. Provide detailed drawings for all structural practices. Specifications must, at a minimum, meet the guidelines set forth in the Manual for Erosion and Sediment Control in Georgia.

CE301 Y 53. Provide vegetative plan, noting all temporary and permanent vegetative practices. Include species, planting dates and seeding, fertilizer, lime and mulching rates. Vegetative plan shall be site specific for appropriate time of year that seeding will take place and for the appropriate geographic region of Georgia.

Effective October 1, 2010

Map Scale Ground Slope Contour Intervals, ft.

1 inch = 100ft or larger scale

Flat 0 - 2% 0.5 or 1

Rolling 2 - 8% 1 or 2

Steep 8% + 2,5 or 10

City/County:Augusta/ Richmond Date on Plans:March 1, 2011

TO BE SHOWN ON ES&PC PLAN

EROSION, SEDIMENTATION & POLLUTION CONTROL PLAN CHECKLIST

STAND ALONE CONSTRUCTION PROJECTS

SWCD:_________________________________________________________

Project Name:Fort Gordon Landfills Address:Fort Gordon, GA 30905