Buffalo_422_Pumping_Maintenance_-_Plans_updated.pdf

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DATE

SHEET___OF___

PROJECT NO.TITLE

LOCATION

DESCRIPTION

BUFFALO 422 PUMPING MAINTENANCE

TITLE SHEET

ALLEGANY COUNTY, MARYLAND

02/13/25

Maryland Department of the Environment Land And Materials Administration

Abandoned Mine Land Division

BUFFALO 422 PUMPING MAINTENANCE

LOCATION MAP

LONACONING QUAD

VICINITY MAP

SCALE 1" = 2000'

Maryland Department of the Environment

Land And Materials Administration

Abandoned Mine Land Division

AMLD PROJECT NO.

DESIGN BY

DRAWN BY

SURVEYED BY

DATE

APPROVAL

REGULATORY & COMPLIANCE ENG

MDE LMA AMLD

ALLEGANY WASHINGTON

FREDERICK

CARROLL

BALTIMORE

BALTI-

MORE

CITYHOWARD

MONTGOMERY ANNE

ARUNDEL

PRINCE

GEORGE'S

CHARLES

TALBOT

QUEEN

ANNE'S

KENT

HARFORD

CECIL

CAROLINE

DORCHESTER

ST. MARY'S

SOMERSET

WICOMICO

WORCESTER

CALVERT

PROJECT LOCATION

GARRETT

SITE

SCHEDULE OF DRAWINGS

DESCRIPTIONSHEET NO.

1. TITLE SHEET AS NOTED

2. DISPOSAL SITE PLAN 1" = 30'

3. SITE PLAN 1" = 30'

4. DETAILS AS SHOWN

5. DETAILS AS SHOWN

6. E&S NOTES N/A

SCALE

BOARD OF PUBLIC WORKS

WES MOORE, GOVERNOR

BROOKE LIERMAN, COMPTROLLER

DERECK DAVIS, TREASURER

CAH

CAH

CAH

SOUTH OF THE TOWN OF LONACONING 2/13/2025

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SITE ACCESS FROM

CHARLESTOWN ROAD SW

PROPOSED ACCESS GATE

(REPLACE EXISTING)

ACCESS ROAD TO

DISPOSAL AREA

SLUDGE DISPOSAL AREA

EXISTING DRYING BED TO BE CLEANED

EXISTING DOSER

LEGEND

EXISTING CONTOUR

EXISTING ACCESS ROADS

LIMITS OF DISTURBANCE LOD

DATE

SHEET___OF___

PROJECT NO.TITLE

LOCATION

DESCRIPTION

SITE PLAN

02/13/25

Maryland Department of the Environment

Land And Materials Administration

Abandoned Mine Land Division

SCALE: 1" = 100'

BUFFALO 422 PUMPING MAINTENANCE

ALLEGANY COUNTY, MARYLAND

SOUTH OF THE TOWN OF LONACONING

EXISTING 6" SCH 80 PVC LINE

PIPE TEE WITH 2 - 6" VALVES AND

VALVE BOX(SEE PIPE LAYOUT

DETAIL ON SHEET 3)

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LOD

LOD

LOD

LOD

EXISTING WATER BAR TO BE

UPGRADED PER DETAIL ON

SHEET 5

DOSER OUTFLOW FLUME

CONCRETE TO BE RAISED 6"

AT SHOWN CORNER

(SEE DOSER DETAIL SHEET 4)PROPOSED PIPE AND TRENCH

(SEE TRENCH DETAIL SHEET 4)

DOSER INFLOW FLUME TO BE

CLEANED OUT AND EXISTING WEIR

TO BE REPLACED

(SEE DOSER DETAIL SHEET 4)

EXISTING POND

CLEANOUT TOBE INSTALLED ALONG

BURIED PIPE(SEE CLEANOUT DETAIL

SHEET 4)

B B'

A

A'

EXISTING ACCESS FROM CHARLESTOWN ROAD SW

REMOVE DIRT BERM FOR ACCESS

AND REPLACE UPON COMPLETION

GRAVEL BERM

(DO NOT DISTURB)

EXISTING SLUDGE PUMPING PIPES

EXISTING PUMPING BED TO BE CLEANED (SEE DETAIL SHEET 3)

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EXISTING BUILDING ACCESS ROAD

DOSER BYPASS

CAUSTIC DRIP TO

TREAT BYPASS

EXISTING PUMPING BUILDING

LOCATION

EXISTING ACCESS ROAD TO SLUDGE POND

PROPOSED PUMPING BUILDING

LOCATION (SEE DETAIL SHEET 3)

CONSTRUCTION NOTES:

1. DURING THE WORK ON THE DOSER INFLOW AND OUTFLOW FLUME

PORTIONS OF THE PROJECT, THE BYPASS FLOW VALVE AND

CAUSTIC DRIP SHALL BE USED TO TREAT ALL WATER UNTIL THE

DOSER PORTION OF THE PROJECT IS COMPLETED.

2. ANY USEABLE EXISTING 6" SCH 80 PVC PIPE SHALL BE USED AT

THE PROPOSED LOCATION BUT SHALL BE APPROVED BY AMLD

BEFORE USE.

3. THE EXISTING ACCESS ROADS SHALL BE UPGRADED AS NEEDED.

4. ALL SLUDGE FROM THE POND SHALL BE DISPOSED OF ON SITE AT

THE DESIGNATED LOCATION.

5. THE EXISTING SLUDGE POND BERM SHALL BE REPLACED TO

EXISTING HEIGHT ONCE SLUDGE IS REMOVED.

LEGEND

EXISTING CONTOUR

ACCESS ROAD

PROPOSED 6" SCH 80 PVC PIPE

EXISTING 6" SCH 80 PVC PIPE

PROPOSED CLEANOUT

LIMITS OF DISTURBANCE

SILT FENCE

LOD

SF SF

PROPOSED VALVES

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SF

0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90

SCALE

HOR: 1" = 10'

VERT: 1" = 5'

SECTION A - A'

SLUDGE DRYING AREA

EXISTING GRAVEL

BERM

EXISTING GROUND SURFACE

APPROX. 210 CY OF SLUDGE TO

BE EXCAVATED

0+00 0+10 0+20 0+30 0+40 0+50

SECTION B - B'

SLUDGE DRYING AREA

EXISTING ACCESS RAMP

EARTH BERM TO BE REPLACED

UPON SLUDGE REMOVAL

SLUDGE MATERIAL TO BE

REMOVED

SCALE

HOR: 1" = 10'

VERT: 1" = 5'

DATE

SHEET___OF___

PROJECT NO.TITLE

LOCATION

DESCRIPTION

SITE PLAN

02/13/25

Maryland Department of the Environment

Land And Materials Administration

Abandoned Mine Land Division

DISPOSAL SITE PLAN VIEW

BUFFALO 422 PUMPING MAINTENANCE

ALLEGANY COUNTY, MARYLAND

SOUTH OF THE TOWN OF LONACONING

SCALE: 1" = 30'

SCALE: 1" = 20'

REMOVE SEDIMENT FROM INLET

FLUME

REPLACE EXISTING WOODEN

WEIR

DOSER SILO

CONCRETE TO TIE INTO

EXISTING

DOSER DETAIL

PLACE CONRETE TO RAISE

BERM 6" BETWEEN OUTFLOW

PIPES

D

D'

DOSER BYPASS (USE DURING

DOSER PORTION OF WORK)

EXISTING CAUSTIC DRIP TREATMENT

NOT TO SCALE

TRENCH DETAIL

12"

MIN.

12"

18" MIN.#57 STONE BEDDING

AND PIPE COVER

2"

BACKFILL REMAINDER OF TRENCH

WITH ROCK FREE EXCAVATED

MATERIAL AND COMPACT

6" SCH 80 PVC PIPE

NOT TO SCALE

EXISTING GRADE

0+00 0+10

D O

SE

R

P

AD

SILO

0+02 0+04 0+06 0+08

DOSER OUTFLOW FLUME DETAIL

NOT TO SCALE

CLEANOUT

CLEANOUT TYPE "A" DETAIL

NOT TO SCALE

WYE FITTING

TOP OF BERM

SLUDGE

POND

TREATMENT

POND

LOWEST PIPE ELEVATION

FOR DEWATERING

NOT TO SCALE

PIPE LAYOUT

6" PVC BALL VALVE

(SEE BALL VALVE

DETAIL)

6" SCH 80 PVC

SLUDGE

TRANSFER PIPE

6" BALL VALVE W/TEE

HANDLE

GRAVEL BEDDING

PIPE BOX TO ALLOW

ACCESS TO VALVES

BALL VALVE DETAIL

NOT TO SCALE

DATE

SHEET___OF___

PROJECT NO.TITLE

LOCATION

DESCRIPTION

DETAILS

02/13/25

Maryland Department of the Environment

Land And Materials Administration

Abandoned Mine Land Division 400

REPAIR CONCRETE TO

COVER OUTFLOW PIPE

CONCRETE TO TIE INTO

EXISTING

EXISTING OUTFLOW

PIPES

BUFFALO 422 PUMPING MAINTENANCE

CROSS SECTION

30°

B

A

WATER BARS ARE NARROW

STRUCTURES THAT MAY BE

SHALLOW OR DEEP. DEEP

WATER BARS ARE USUALLY

USED ON ROADS THAT WILL

BE CLOSED FOR EXTENDED

PERIODS OF TIME.

SHALLOW WATER BAR

A = 6 INCHES

B = 8 FEET

SURFACE FLOW DOWNGRADE

ISOMETRIC VIEW

Notes:

1. CONTRACTOR TO INSTALL A WATER BAR ON THE

ACCESS ROAD NEAR THE DOSER IN AREA SHOWN ON

SITE PLAN.

2. ALL WATER BARS SHALL BEGIN AT THE INTERSECTION

OF THE ROADBED AND CUT SLOPE AND RUN ACROSS

THE ENTIRE WIDTH OF THE ROADBED.

3. ALL WATER BARS SHALL HAVE FREE FLOWING

OUTLETS.

WATER BAR DETAIL

NOT TO SCALE

EXISTING GROUND

TWO EXISTING PUMPING HOOKUP PIPE

PROPOSED

SHED

RELOCATION

EXISTING SHED

LOCATION

NOTES:

THE EXISTING PUMPING SHED SHALL BE MOVED TO THE PROPOSED LOCATION.

THE EXISTING HOOKUPS SHOULD BE MOVED INSIDE THE NEW BUILDINGS LOCATION.

SHED MOVING DETAIL

NOT TO SCALE

6"X6" P.T. POST

EXISTING GRADE

TAMP BACKFILL

TO SECURELY

SET POSTS

6"X6" P.T. POST

APPROVED

HARDENED STEEL

CHAIN WITH LOCK.

1 34 " MIN. DIAMETER TUBULAR STEEL BAR

GATE WITH TUBE BRACES, FACTORY PAINTED

6" GATE

WHEEL WITH

SPRING

SUSPENSION

GATE DETAIL

NOT TO SCALE

1'-0" x 34" DIA THREADED GATE

HINGE BOLT, 2" DIA HINGE CLAMP,

BUTS, AND WASHERS (TYP. OF 3

SETS). A NUT AND WASHER SHALL

BE INSTALLED ON EACH SIDE OF

THE GATE SUPPORT POST AT EACH

GATE HINGE BOLT. ONE HINGE

BOLT TO BE TURNED IN OPPOSITE

DIRECTION.

DATE

SHEET___OF___

PROJECT NO.TITLE

LOCATION

DESCRIPTION

DETAILS

02/13/25

Maryland Department of the Environment

Land And Materials Administration

Abandoned Mine Land Division 500

BUFFALO 422 PUMPING MAINTENANCE

B-4 STANDARDS AND SPECIFICATIONS

FOR

VEGETATIVE STABILIZATION

Definition

Using vegetation as cover to protect exposed soil from erosion.

Purpose

To promote the establishment of vegetation on exposed soil.

Conditions Where Practice Applies

On all disturbed areas not stabilized by other methods. This specification is divided into sections on incremental stabilization; soil preparation, soil amendments and topsoiling; seeding and mulching; temporary stabilization; and permanent stabilization.

Sediment control practices must remain in place during grading, seedbed preparation, seeding, mulching, and vegetative establishment.

Adequate Vegetative Establishment

Inspect seeded areas for vegetative establishment and make necessary repairs, replacements, and reseedings within the planting season.

1. Adequate vegetative stabilization requires 95 percent groundcover.

2. If an area has less than 40 percent groundcover, restabilize following the original recommendations for lime, fertilizer, seedbed preparation, and seeding.

3. If an area has between 40 and 94 percent groundcover, over-seed and fertilize using half of the rates originally specified.

4. Maintenance fertilizer rates for permanent seeding are shown in Table B.6.

B-4-2 STANDARDS AND SPECIFICATIONS

FOR

SOIL PREPARATION, TOPSOILING, AND SOIL AMENDMENTS

Definition

The process of preparing the soils to sustain adequate vegetative stabilization.

Purpose

To provide a suitable soil medium for vegetative growth.

Conditions Where Practice Applies

Where vegetative stabilization is to be established.

Criteria

A. Soil Preparation

1. Temporary Stabilization

a. Seedbed preparation consists of loosening soil to a depth of 3 to 5 inches by means of suitable agricultural or construction equipment, such as disc harrows or chisel plows or rippers mounted on construction equipment. After the soil is loosened, it must not be rolled or dragged smooth but left in the roughened condition.

Slopes 3:1 or flatter are to be tracked with ridges running parallel to the contour of the slope.

b. Apply fertilizer and lime as prescribed on the plans.

c. Incorporate lime and fertilizer into the top 3 to 5 inches of soil by disking or other suitable means.

2. Permanent Stabilization

a. Application of amendments or topsoil is required.

b. Graded areas must be maintained in a true and even grade as specified on the approved plan, then scarified or otherwise loosened to a depth of 3 to 5 inches.

c. Apply soil amendments as specified on the approved plan.

d. Mix soil amendments into the top 3 to 5 inches of soil by disking or other suitable means. Rake lawn areas to smooth the surface, remove large objects like stones and branches, and ready the area for seed application. Loosen surface soil by dragging with a heavy chain or other equipment to roughen the surface where site conditions will not permit normal seedbed preparation. Track slopes 3:1 or flatter with tracked equipment leaving the soil in an irregular condition with ridges running parallel to the contour of the slope. Leave the top 1 to 3 inches of soil loose and friable.

Seedbed loosening may be unnecessary on newly disturbed areas.

B. Soil Amendments (Fertilizer and Lime Specifications)

1. Fertilizers must be uniform in composition, free flowing and suitable for accurate application by appropriate equipment. Manure may be substituted for fertilizer with prior approval from the appropriate approval authority. Fertilizers must all be delivered to the site fully labeled according to the applicable laws and must bear the name, trade name or trademark and warranty of the producer. Fertilizer Rates and Type shown on Seed Mix Summary table.

2. Lime materials must be ground limestone (hydrated or burnt lime may be substituted except when hydroseeding) which contains at least 50 percent total oxides (calcium oxide plus magnesium oxide). Limestone must be ground to such fineness that at least 50 percent will pass through a #100 mesh sieve and 98 to 100 percent will pass through a #20 mesh sieve. Apply lime at the rate shown in the Seed Mix Summary table.

3. Lime and fertilizer are to be evenly distributed and incorporated into the top 3 to 5 inches of soil by disking or other suitable means.

4. Where the subsoil is either highly acidic or composed of heavy clays, spread ground limestone at the rate of 4 to 8 tons/acre (200-400 pounds per 1,000 square feet) prior to the placement of topsoil.

B-4-3 STANDARDS AND SPECIFICATIONS

FOR

SEEDING AND MULCHING

Definition

The application of seed and mulch to establish vegetative cover.

Purpose

To protect disturbed soils from erosion during and at the end of construction.

Conditions Where Practice Applies

To the surface of all perimeter controls, slopes, and any disturbed area not under active grading.

Criteria

A. Seeding

1. Specifications

a. All seed must meet the requirements of the Maryland State Seed Law. All seed must be subject to re-testing by a recognized seed laboratory. All seed used must have been tested within the 6 months immediately preceding the date of sowing such material on any project. Seed tags must be available upon request to the inspector to verify type of seed and seeding rate.

b. Mulch alone may be applied between the fall and spring seeding dates only if the ground is frozen. The appropriate seeding mixture must be applied when the ground thaws.

c. Inoculants: The inoculant for treating legume seed in the seed mixtures must be a pure culture of nitrogen fixing bacteria prepared specifically for the species. Inoculants must not be used later than the date indicated on the container. Add fresh inoculants as directed on the package. Use four times the recommended rate when hydroseeding. Note: It is very important to keep inoculant as cool as possible until used. Temperatures above 75 to 80 degrees Fahrenheit can weaken bacteria and make the inoculant less effective.

d. Sod or seed must not be placed on soil which has been treated with soil sterilants or chemicals used for weed control until sufficient time has elapsed (14 days min.) to permit dissipation of phyto-toxic materials.

2. Application

a. Dry Seeding: This includes use of conventional drop or broadcast spreaders.

i. Incorporate seed into the subsoil at the rates prescribed on Temporary Seeding Table B.1, Permanent Seeding Table B.3, or site-specific seeding summaries.

ii. Apply seed in two directions, perpendicular to each other.

Apply half the seeding rate in each direction. Roll the seeded area with a weighted roller to provide good seed to soil contact.

b. Drill or Cultipacker Seeding: Mechanized seeders that apply and cover seed with soil.

i. Cultipacking seeders are required to bury the seed in such a fashion as to provide at least 1/4 inch of soil covering.

Seedbed must be firm after planting.

ii. Apply seed in two directions, perpendicular to each other.

Apply half the seeding rate in each direction.

c. Hydroseeding: Apply seed uniformly with hydroseeder (slurry includes seed and fertilizer).

i. If fertilizer is being applied at the time of seeding, the application rates should not exceed the following: nitrogen, 100 pounds per acre total of soluble nitrogen; P2O5 (phosphorous), 200 pounds per acre; K2O (potassium), 200 pounds per acre.

ii. Lime: Use only ground agricultural limestone (up to 3 tons per acre may be applied by hydroseeding). Normally, not more than 2 tons are applied by hydroseeding at any one time. Do not use burnt or hydrated lime when hydroseeding.

iii. Mix seed and fertilizer on site and seed immediately and without interruption.

iv. When hydroseeding do not incorporate seed into the soil.

B. Mulching

1. Mulch Materials (in order of preference)

a. Straw consisting of thoroughly threshed wheat, rye, oat, or barley and reasonably bright in color. Straw is to be free of noxious weed seeds as specified in the Maryland Seed Law and not musty, moldy, caked, decayed, or excessively dusty. Note: Use only sterile straw mulch in areas where one species of grass is desired.

2. Application

a. Apply mulch to all seeded areas immediately after seeding.

b. When straw mulch is used, spread it over all seeded areas at the rate of 3 tons per acre to a uniform loose depth of 1 to 2 inches.

Apply mulch to achieve a uniform distribution and depth so that the soil surface is not exposed. When using a mulch anchoring tool, increase the application rate to 3.5 tons per acre.

3. Anchoring

a. Perform mulch anchoring immediately following application of mulch to minimize loss by wind or water. This may be done by one of the following methods (listed by preference), depending upon the size of the area and erosion hazard:

i. A mulch anchoring tool is a tractor drawn implement designed to punch and anchor mulch into the soil surface a minimum of 2 inches. This practice is most effective on large areas, but is limited to flatter slopes where equipment can operate safely.

If used on sloping land, this practice should follow the contour.

ii. Wood cellulose fiber may be used for anchoring straw. Apply the fiber binder at a net dry weight of 750 pounds per acre.

Mix the wood cellulose fiber with water at a maximum of 50 pounds of wood cellulose fiber per 100 gallons of water.

iii. Synthetic binders such as Acrylic DLR (Agro-Tack), DCA-70, Petroset, Terra Tax II, Terra Tack AR or other approved equal may be used. Follow application rates as specified by the manufacturer. Application of liquid binders needs to be heavier at the edges where wind catches mulch, such as in valleys and on crests of banks. Use of asphalt binders is strictly prohibited.

iv. Lightweight plastic netting may be stapled over the mulch according to manufacturer recommendations. Netting is usually available in rolls 4 to 15 feet wide and 300 to 3,000 feet long.

1.

CAREFULLY.

structure(s).

mandatory.

2.

of SSA.

3.

4.

5.

6.

18.

19.

20.

21.

STANDARD SEDIMENT CONTROL NOTES

22.

23.

24.

E. Prior to removal of all sediment control devices.

F. Prior to final acceptance.

The contractor shall construct all erosion and sediment control measures per the approved plan and construction sequence and, shall have them inspected and approved by the agency inspector prior to beginning any other land disturbances. Minor sediment control device location adjustments may be made in the field with the approval of the MDE Inspector. The Contractor shall ensure that all runoff from disturbed areas is directed to the sediment control devices, and shall not remove any erosion or sediment control measure without prior permission from MDE Inspector and agency inspector. The contractor must obtain prior agency and MDE aproval for changes to the Sediment Control Plan and/or Sequence of Construction.

The contractor shall protect all points of construction ingress and egress to prevent the deposition of materials onto public roads. All materials deposited onto public roads shall be removed immediately.

The contractor shall inspect daily and maintain continuously in an effective operating condition all erosion and sediment control measures until such times as they are removed with prior permission from MDE Inspector and agency inspector.

All sediment basins, trap embankments and slopes, perimeter dikes, swales and all disturbed slopes steeper or equal to 3:1 shall be stabilized with sod or seed and anchored straw mulch, or other approved stabilization measures, as soon as possible but no later than seven (7) calendar days after establishment. All areas disturbed outside of the perimeter sediment control system must be minimized. Maintenance must be performed as necessary to ensure continued stabilization. (Requirement for

The contractor shall notify the Administration (MDE) at (301) 689-1454 seven (7) days before commencing any land disturbing activity and, unless waived by the Administration, shall be required to hold a pre-construction meeting between project representatives and a representative

The contractor must notify MDE by telephone at the following points:

A. The required pre-construction meeting.

B. Following installation of sediment control measures.

C. During the installation of sediment basins (to be converted into permenant stormwater management structures) at the required inspection points (see Inspection Checklist on plan).

Notification prior to commencing construction of each step is

D. Prior to removal or modification of any sediment control

NOTE TO CONTRACTOR: THESE NOTES ARE ALL REQUIRED BY MDE

HOWEVER, ALL MAY NOT APPLY TO THIS CONTRACT. PLEASE READ

8.

7.

project.

9.

10.

11.

12.

13.

14.

in sump areas.

25.

26.

No permanent cut or fill slope with a gradient steeper than 3:1 will be permitted in lawn maintenance areas. A slope gradient of up to 2:1 will be permitted in non-maintenance areas provided that those areas are indicated on the erosion and sediment control plan with a low-maintenance ground cover specified for permanent stabilization. Slope gradient steeper than 2:1 will not be permitted with vegetative stabilization.

For finished grading, the contractor shall provided adequate gradients so as to: prevent water from standing on the surface more than twenty four

(24) hours after the end of a rainfall except in designated drainage courses and swale flow areas which may drain as long as forty-eight (48)

Prior to removal of sediment control measures, the contractor shall stabilize and have established permanent stabilization for all contributory disturbed areas using sod or an approved permanent seed mixture with required soil amendments and an approved anchored mulch.

Wood fiber mulch may only be used in seeding season where the slope does not exceed 10% and grading has been done to promote sheet flow drainage.

Areas brought to finished grade during the seeding season shall be permanently stabilized as soon as possible, but no later than fourteen

(14) calendar days after establishment. When property is brought to finished grade during the months of November through February, and permanent stabilization is found to be impractical, temporary seed and anchored straw mulch shall be applied to disturbed areas. The final permanent stabilization of such property shall be applied by March 15 or earlier if ground and weather conditions allow.

The site's approval letter, approved Erosion and Sediment Control Plans, daily log books and test reports shall be available at the site for inspection by duly authorized officials of MDE and agency responsible for

Surface drainage flows over unstabilized cut and fill slopes shall be controlled by either preventing drainage flows from traversing the slopes or by installing protective devices to lower the water downslope without causing erosion. Dikes shall be installed and maintained at the top of cut or fill slopes until the slope and drainage area to it are fully stabilized, at which time they must be removed and final grading done to promote sheet flow drainage. Protective methods must be provided at points of concentrated flow where erosion is likely to occur.

Permanent swales or other points of concentrated water flow shall be stabilized with sod or seed with an approved erosion control matting, riprap or by other approved stabilization measures.

Temporary sediment control devices may be removed, with permission of MDE Inspector and agency inspectors, within thirty (30) calendar days following establishment of permanent stabilization in all contributory drainage areas. Stormwater management structures used temporarily for sediment control shall be converted to the permanent configuration within this time period as well.

The contractor shall apply sod or seed and anchored straw mulch, or other approved stabilization measures to all disturbed areas and stockpiles within fourteen (14) calendar days after stripping and grading activities have ceased in the area. Maintenance shall be performed as necessary to ensure continued stabilization. (Requirement may be reduced to seven (7) days for sensitive areas.)

stabilization may be reduced to three (3) days for sensitive areas.)

points.

15.

16.

17.

shall not be required to meet this requirement.

Sediment traps or basins are not permitted within 20 feet of a foundation which is existing or under construction. No structure may be constructed within 20 feet of an active sediment trap or basin.

The MDE inspector has the option of requiring additional safety or sediment control measures, if deemed necessary.

All trap depth dimensions are relative to the outlet elevation. All traps must have a stable outfall. All traps and basins shall have stable inflow hours after the end of a rainfall, areas designed to have standing water

OWNER'S/DEVELOPER'S CERTIFICATION

DESIGN CERTIFICATION

STANDARD STABILIZATION NOTE:

Printed Name

Date Designer's Signature

Department of the Environment Stormwater Management Regulations.

Erosion and Sediment Control or current revisions thereof, and the accordance with the 2011 Standards and Specifications for Soil "I hereby certify that this plan has been designed in other disturbed or graded areas on the project site" horizontal to 1 vertical (3:1); and fourteen days (14) as to all swales, ditches, perimeter slopes, and all slopes greater than 3 calendar days as to the surface of all perimeter controls, dikes, permanent or temporary stabilization shall be completed within (7) "Following initial soil disturbance or redisturbance, requirements. Where safety fence is deemed appropriate and local sediment basin and the system is to be used for temporarily conveying sediment laden water, all storm drain inlets in non-sump areas shall have temporary asphalt berms constructed at the time of base paving to direct gutter flow into the inlets to avoid surcharging and overflow of inlets

Card No. Printed Name and Title of Agent

Date Agent for MDE LMA MINING PROGRAM

Maryland, Department of the Environment, Compliance Inspectors".

right of entry for periodic on-site evaluation by State of and erosion before beginning the project. I hereby authorize the Environment approved training program for the control of sediment have a certificate of attendance at a Maryland Department of the responsible personnel involved in the construction project will and or development will be done pursuant to this plan and that any "I / We hereby certify that all clearing, grading, construction ordinances do not specify fencing sizes and types, the following shall be used as a minimum standard: The safety fence must be made of welded wire and at least 42 inches high, have posts spaced no farther apart than 8 feet, have mesh openings no greater than 2 inches in width and 4 inches in height with a minimum of 14 gauge wire. Safety fence must be main-tained and in good condition at all times.

Sediment control for utility construction for areas outside of designed controls or as directed by engineer or MDE Inspector:

A. Call "Miss Utility" at 1-800-257-7777 48 hours prior to the

B. Excavated trench material shall be placed on the high side of

C. Trences for utility installation shall be backfilled, compacted and stabilized at the end of each working day. No more trench shall be opened than can be completed the same

D. Temporary silt fence shall be placed immediately downstream of any disturbed area intended to remain disturbed for more than

Off-site spoil or borrow areas on State or Federal property must have prior approval by MDE, otherwise, approval must be granted by the local authorities. All waste and borrow areas off-site must be protected by sediment control measures and stabilized.

Sites where infiltration devices are used for the control of stormwater, extreme care must be taken to prevent runoff from unstabilized areas from entering the structure during construction. Sediment control devices placed in infiltration areas must have bottom elevations at least two (2) feet higher than the finish grade bottom elevation of the infiltration practice. When converting a sediment trap to an infiltration device, all accumulated sediment must be removed and disposed of prior to final

All points of construction ingress and egress in unpaved areas shall be stabilized and protected to prevent tracking of mud onto public ways.

When a storm drain system outfall is directed to a sedment trap or start of work.

the trench.

day, unless;

one day.

grading of infiltration device.

Vegetative stabilization shall be performed in accordance with the Standards and Specifications for Soil Erosion and Sediment Control. Refer to appropriate specifications for temporary seeding, permanent seeding, mulching, sodding and ground covers.

Temporary sediment trap(s) shall be cleaned out and restored to the original dimensions when sediment has accumulated to a point one half (1/2) the depth between the outlet crest and the bottom of the trap.

Sediment basins shall be cleaned out and restored to the original dimensions when sediment has accumulated to one half (1/2) the depth between the dewatering elevation and the bottom of the basin.

Sediment removed from traps (and basins) shall be placed and stabilized in approved areas, but not within a floodplain, wetland or tree-save area. When pumping sediment laden water, the discharge must be directed to a sediment trapping device prior to release from the site.

Where deemed appropriate by the engineer or inspector, sediment basins and traps may need to be surrounded with an approved safety fence. The fence must conform to local ordinances and regulations. The developer or owner shall check with local building officials on applicable safety

Total Fill +/- 0 cubic yards

27.

Total Area of Site 5.46 acres Area Disturbed <0.5 acres Area to be roofed or paved none acres Total Cut +/- 210 cubic yards

Site Information:

Offsite Waste / Borrow Area none location

B-4-4 STANDARDS AND SPECIFICATIONS

FOR

TEMPORARY STABILIZATION

Definition

To stabilize disturbed soils with vegetation for up to 6 months.

Purpose

To use fast growing vegetation that provides cover on disturbed soils which will not be permanently stabilized within 3 days.

Conditions Where Practice Applies

Exposed soils where ground cover is needed for a period of 6 months or less. For longer duration of time, permanent stabilization practices are required.

Abandoned Mine Land - Temporary Seeding Mix Summary

Wheat (Triticum aestivum)

3/1 to 9/15

Annual Ryegrass 40

1/4 to 1/2 436 lb/ac (10 lb / 1000 sf)

2 tons / ac (90 lb / 1000 sf)

Note: For additional information and seeding tables, refer to section B-4-4 on pages B.18 through B.20 of the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control.

B-4-5 STANDARDS AND SPECIFICATIONS

FOR

PERMANENT STABILIZATION

Definition

To stabilize disturbed soils with permanent vegetation.

Purpose

To use long-lived perennial grasses and legumes to establish permanent ground cover on disturbed soils.

Conditions Where Practice Applies

Exposed soils where ground cover is needed for 6 months or more.

Criteria

A. Seed Mixtures

1. General Use

a. Additional planting specifications for exceptional sites such as shorelines, stream banks, mine reclamation sites, or dunes or for special purposes such as wildlife or aesthetic treatment may be found in USDA-NRCS Technical Field Office Guide, Section 342 - Critical Area Planting or as stated in Contract Documents.

b. For sites having disturbed area over 5 acres, use and show the rates recommended by the Mining Program.

c. For areas receiving low maintenance, apply urea form fertilizer (46-0-0) at 3 ½ pounds per 1000 square feet (150 pounds per acre) at the time of seeding in addition to the soil amendments shown in the Permanent Seeding Summary .

Permanent Seeding Mix Summary

B. Sod: To provide quick cover on disturbed areas (2:1 grade or flatter).

1. General Specifications

a. Class of turfgrass sod must be Maryland State Certified. Sod labels must be made available to the job foreman and inspector.

b. Sod must be machine cut at a uniform soil thickness of ¾ inch, plus or minus ¼ inch, at the time of cutting. Measurement for thickness must exclude top growth and thatch. Broken pads and torn or uneven ends will not be acceptable.

c. Standard size sections of sod must be strong enough to support their own weight and retain their size and shape when suspended vertically with a firm grasp on the upper 10 percent of the section.

d. Sod must not be harvested or transplanted when moisture content (excessively dry or wet) may adversely affect its survival.

e. Sod must be harvested, delivered, and installed within a period of 36 hours. Sod not transplanted within this period must be approved by an agronomist or soil scientist prior to its installation.

2. Sod Installation

a. During periods of excessively high temperature or in areas having dry subsoil, lightly irrigate the subsoil immediately prior to laying the sod.

b. Lay the first row of sod in a straight line with subsequent rows placed parallel to it and tightly wedged against each other. Stagger lateral joints to promote more uniform growth and strength. Ensure that sod is not stretched or overlapped and that all joints are butted tight in order to prevent voids which would cause air drying of the roots.

c. Wherever possible, lay sod with the long edges parallel to the contour and with staggering joints. Roll and tamp, peg or otherwise secure the sod to prevent slippage on slopes. Ensure solid contact exists between sod roots and the underlying soil surface.

d. Water the sod immediately following rolling and tamping until the underside of the new sod pad and soil surface below the sod are thoroughly wet. Complete the operations of laying, tamping and irrigating for any piece of sod within eight hours.

3. Sod Maintenance

a. In the absence of adequate rainfall, water daily during the first week or as often and sufficiently as necessary to maintain moist soil to a depth of 4 inches. Water sod during the heat of the day to prevent wilting.

b. After the first week, sod watering is required as necessary to maintain adequate moisture content.

c. Do not mow until the sod is firmly rooted. No more than ⅓ of the grass leaf must be removed by the initial cutting or subsequent cuttings. Maintain a grass height of at least 3 inches unless otherwise specified.

Barley

Oats

(Hordeum vulgare)

(Avena sativa)

Hardiness Zone: 6a Seed Mixture: Choose 1

No. Species Application Rate (lb/ac)

Seeding Dates

Seeding Depths (in)

Lime Rate

Fertilizer Type (20 - 20 - 20)

Fertilizer Rate

Orchard

3/1 to 9/15

Application

Timothy 10

Hardiness Zone: 6a Seed Mixture: 1 (Grassland)

No. Rate (lb/ac) Species Dates Seeding Seeding

4 tons/ac

Depths (in)

Lime Rate

400 lb/ac (184 lb/ (9.5 lb /

1000 sf)

Birdsfoot

1000 sf)

Grass

10Trefoil

1/4 to 1/25

Red Top

Red Clover

Perrinial

Fertilizer Type

Rye

(20 - 20 - 20)

Fertilizer Rate

Construction Sequence

1. Notify MDE Compliance (301-689-1481) and MDE Abandoned Mine Land Division (301-689-1440), 5 days prior to construction.

2. Upgrade any access roads on site necessary to complete the project including access to the sludge disposal area as shown on the plans.

3. Install all sediment and erosions control measure on site.

4. Prepare sludge disposal area(s) and construct any temporary access roads as needed.

5. Remove sludge from the drying bed and dispose of in designated sludge disposal area.

6. Separate the existing pumping pipe from couplings and valves along the length of the pipe that shall be buried.

7. Trench and install a 6" SCH 80 pumping pipe at the desingated locataion at a 1' depth as shown on the plans.

8. Move the existing pumping building to the designated location shown on the plans, ensuring that the existing pumping hookups are available inside the building.

9. Clean out the Doser inlet flume (including weir repair), and place concrete on the outflow of the existing doser using the bypass and caustic drip treatment during the doser repairs.

10. Seed, lime, fertilize, and mulch all disturbed areas.

10/1/2024

RCP028949 Christian Hutzell

10/1/2024

Christian Hutzell

DATE

SHEET___OF___

PROJECT NO.TITLE

LOCATION

DESCRIPTION

E&S NOTES

02/13/25

Maryland Department of the Environment

Land And Materials Administration

Abandoned Mine Land Division 600

BUFFALO 422 PUMPING MAINTENANCE