B08_24-SF-0145_APPROVED_PLANS_0002.pdf

PROJECT

SITE

ST

ATE OF MARYLAND

T IM

OTHY J. HOGAN

PROF ES S I ONA L ENG I NEERREG I ST ERED

NO . 4 0 9 4 1

07/19/2024

REVIEWED AND APPROVED FOR SEDIMENT

CONTROL AND STORMWATER MANAGEMENT

UNDER SECTIONS 4-106 AND 4-205

BY: COLLIN HILTNER

DATE:

MAYLAND DEPARTMENT OF THE ENVIRONMENT

SEDIMENT & STORMWATER PLAN REVIEW DIVISION

AUGUST 8, 2024

ST

ATE OF MARYLAND

T IM

OTHY J. HOGAN

PROF ESS I ONA L ENG I NEERREG I ST ERED

NO . 4 0 9 4 1

07/19/2024

GENERAL NOTES

1. PRIOR TO BEGINNING CONSTRUCTION, THE CONTRACTOR SHALL BE

RESPONSIBLE FOR ENSURING THAT ALL REQUIRED PERMITS AND APPROVALS

HAVE BEEN OBTAINED. NO CONSTRUCTION OR FABRICATION SHALL BEGIN UNTIL

THE CONTRACTOR HAS RECEIVED AND THOROUGHLY REVIEWED ALL PLANS AND

OTHER DOCUMENTS APPROVED BY ALL PERMITTING AUTHORITIES.

2. NO GRADING, STRIPPING, EXCAVATION, FILLING OR OTHER DISTURBANCE OF THE

NATURAL GROUND COVER SHALL TAKE PLACE UNTIL PROPOSED SOIL EROSION

CONTROL PLAN HAS BEEN APPROVED AND IN PLACE.

3. IN THE CASE OF CONFLICT BETWEEN THIS DRAWING AND ANY OTHER DRAWING

AND/OR SPECIFICATIONS, THE CONTRACTING OFFICER (CO) SHALL BE

IMMEDIATELY NOTIFIED FOR CLARIFICATION.

4. THE CONTRACTOR SHALL BID AND PERFORM THE WORK IN ACCORDANCE WITH

ALL LOCAL, STATE AND NATIONAL CODES AND THE REQUIREMENTS OF LOCAL

UTILITY COMPANIES.

5. IN ACCORDANCE WITH GENERALLY ACCEPTED CONSTRUCTION PRACTICES, THE

CONTRACTOR WILL BE SOLELY AND COMPLETELY RESPONSIBLE FOR

CONDITIONS OF THE JOB SITE, INCLUDING SAFETY OF ALL PERSONS AND

PROPERTY DURING PERFORMANCE OF THE WORK. THIS REQUIREMENT WILL

APPLY CONTINUOUSLY AND WILL NOT BE LIMITED TO NORMAL WORKING HOURS.

THE CONTRACTOR WILL BE RESPONSIBLE FOR PROVIDING AND MAINTAINING ALL

BARRICADES, WARNING SIGNS, FLASHING LIGHTS AND THE TRAFFIC CONTROL

DEVICES DURING CONSTRUCTION. CONTRACTOR SHALL COMPLY WITH OSHA

REGULATIONS AND SAFETY REQUIREMENTS. CONTRACTOR SHALL PROVIDE A

SAFETY PLAN TO CONTRACTING OFFICE FOR REVIEW AND APPROVAL.

6. THE CONTRACTOR IS RESPONSIBLE FOR THE SAFETY OF ALL VEHICLE TRAFFIC IN

AND AROUND THE CONSTRUCTION AREA.

CONSTRUCTION NOTES

1. CONTRACTOR SHALL FLAG ALL TREES TO BE REMOVED FOR CO APPROVAL PRIOR

TO BEGINNING CONSTRUCTION.

2. SEE DEMOLITION AND EROSION & SEDIMENT CONTROL PLAN FOR TREES TO BE

CUT FLUSH WITH GROUND SURFACE AND TREATED WITH APPROVED HERBICIDE

PER SPECIFICATIONS. DO NOT DISTURB ROOTS EXCEPT AS NEEDED TO

CONSTRUCT THE PROPOSED STRUCTURE.

3. ANY MODIFICATION TO THE STAGING AREA SHOWN IN THE CONTRACT

DOCUMENTS IS TO BE APPROVED BY THE MARYLAND DEPARTMENT OF THE

ENVIRONMENT AND THE CONTRACT OFFICER PRIOR TO CONSTRUCTION.

4. CONSTRUCTION STAKEOUT OF LOD, LOW, AND STAIR TOWER FOUNDATIONS

SHALL BE PERFORMED BY THE CONTRACTOR PRIOR TO THE SITE BEING

DISTURBED.

GRADING AND DRAINAGE NOTES

1. CONTRACTOR SHALL NOTIFY ALL UTILITY COMPANIES HAVING UNDERGROUND

UTILITIES ON SITE OR IN RIGHT-OF-WAY PRIOR TO EXCAVATION. CONTRACTOR

SHALL NOTIFY MD-811 AND PRIVATE UTILITY LOCATOR 48 HOURS PRIOR TO

EXCAVATION.

2. SITE GRADING SHALL NOT PROCEED UNTIL EROSION CONTROL MEASURES HAVE

BEEN INSTALLED AND APPROVED BY CONTRACT OFFICER.

3. DURING ALL GRADING AND DRAINAGE OPERATIONS, CONTRACTOR SHALL ABIDE

BY ALL OSHA REGULATIONS FOR SLOPING AND BENCHING.

4. SITE GRADES AROUND PAVEMENT SHALL BE GRADED DURING CONSTRUCTION

TO PREVENT PONDING. ANY SURFACE WATER ACCUMULATION IN THE PROJECT

AREAS SHALL BE DRAINED IMMEDIATELY TO AVOID SATURATION OF THE

SUBGRADE SOILS.

5. ALL EXCAVATIONS SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE LATEST

OSHA GUIDELINES AS MANDATED IN CURRENT FEDERAL, STATE AND LOCAL

REGULATIONS. THE CONTRACTOR SHALL BE SOLELY RESPONSIBLE IN PROVIDING

SAFE WORKING CONDITIONS IN CONNECTION WITH ANY EXCAVATION WORK.

6. SUITABLE FILL MATERIAL SHALL BE PLACED AND COMPACTED TO A DENSITY AS

SPECIFIED.

7. STONE BASES SHOULD BE COMPACTED TO A DENSITY AS SPECIFIED.

8. GRADE LINES SHOWN ARE FINISHED GRADE. CONTRACTOR SHOULD SEE DETAIL

SHEETS FOR APPROPRIATE MATERIAL TYPE TO DETERMINE SUB-GRADE

ELEVATIONS FOR VARIOUS PAVEMENT TYPES.

9. ALL CONSTRUCTED PEDESTRIAN SURFACES SHALL MEET THE ARCHITECTURAL

BARRIERS ACT (ACCESSIBILITY) STANDARDS FOR SLOPE AND CROSS-SLOPE

REQUIREMENTS OR REWORK WILL BE PROVIDED BY THE CONTRACTOR TO

CORRECT NON-COMPLIANCE AT THE CONTRACTOR'S EXPENSE.

CULTURAL RESOURCE NOTES

1. CONTRACTOR SHALL PROTECT STONE WALLS, EXISTING CANAL LOCK WALLS,

CSX BRIDGE & ABUTMENTS AND ALL ASSOCIATED FEATURES FROM DAMAGE

DURING ALL PORTIONS OF CONSTRUCTION.

2. AT ALL ARCHEOLOGICALLY SENSITIVE AREAS, AN NPS PROVIDED

ARCHEOLOGICAL MONITOR MAY OBSERVE ALL GROUND-DISTURBING SITE WORK,

INCLUDING CONSTRUCTION OF TEMPORARY FACILITIES, FROM A SAFE LOCATION

MUTUALLY AGREED ON BY CONTRACTOR AND MONITOR. AS NEW GROUND IS

BROKEN, MONITOR MAY EXAMINE EXCAVATED MATERIALS USING CONSTRUCTION

LAYOUT CENTERLINE AND PERIMETER STAKING AS A REFERENCE POINT TO

RECORD LOCATIONS OF FINDING. CONTRACTOR SHALL PROVIDE A MINIMUM OF

ONE WEEK NOTICE IN ADVANCE OF EXCAVATION ACTIVITIES.

3. IF THE CONTRACTOR OR THE ARCHEOLOGICAL MONITOR DISCOVERS

UNDOCUMENTED RESOURCES, ALL WORK WITHIN 100 FEET SHALL STOP

IMMEDIATELY AND BE RELOCATED TO A NON-SENSITIVE AREAS. CONTRACTOR

MAY BE REQUIRED TO ALLOW MONITOR TO TAKE SOIL SAMPLES AND RECORD

RESOURCES. WHILE ARCHEOLOGICAL MONITOR IS DOCUMENTING RESOURCES IN

SENSITIVE AREAS, CONTRACTOR SHALL RELOCATE WORK TO NON-SENSITIVE

AREAS WHERE MONITORING IS NOT NORMALLY REQUIRED.

4. IF RESOURCES ARE DISCOVERED WHILE ARCHEOLOGICAL MONITOR IS ABSENT,

STOP WORK IMMEDIATELY AND REPORT THE DISCOVERY TO THE CONTRACTING

OFFICER.

5. THE CONTRACTOR SHALL PLAN, SCHEDULE AND EXECUTE THE WORK TO

PREVENT STOPPAGES AT ONE AREA FROM STOPPING ALL WORK AT THE

CONSTRUCTION SITE.

HISTORIC PRESERVATION REQUIREMENTS

1. WORK SHALL BE COMPLETED IN A MANNER CONSISTENT WITH THE SECRETARY

OF INTERIOR'S STANDARD FOR TREATMENT OF HISTORIC PROPERTIES.

CONSTRUCTION SEQUENCE

THE CONTRACTOR IS REQUIRED TO CONSTRUCT THE PROJECT IN NUMERICAL ORDER

NOTED WITHIN THE FOLLOWING SEQUENCE OF CONSTRUCTION.

THE CONTRACTOR SHALL BE RESPONSIBLE FOR STABILIZING THE SITE AT THE END

OF EACH DAY IN ACCORDANCE WITH MDE STANDARDS AND SPECIFICATIONS OF SOIL

EROSION AND SEDIMENT CONTROL.

1. CONTACT MDE AND NPS CONTRACTING OFFICER 48 HOURS PRIOR TO THE START

OF CONSTRUCTION, A PRE-CONSTRUCTION MEETING WILL BE REQUIRED PRIOR

TO THE START OF ANY CONSTRUCTION. CONTRACTOR SHALL DETERMINE THE

USE OR NOT OF THE OPTIONAL LOD WILL BE USED. IF OPTIONAL LOD IS USED,

THEN ALL APPROVED SEDIMENT CONTROLS MUST BE INSTALLED PRIOR TO

COMMENCING WORK.

2. THE CONTRACTOR SHALL INSTALL SPECIFIED PERIMETER CONTROLS PRIOR TO

COMMENCING CONSTRUCTION ACTIVITIES CAUSING EARTH DISTURBANCE.

CONTRACTOR SHALL COMPLETELY STABILIZE THE CONTRIBUTING DRAINAGE

AREA PRIOR TO OPENING THE CLEAR WATER DIVERSION SYSTEM IF USING

OPTIONAL LOD.

3. CONSTRUCT STAGING AREA 2 AS SHOWN ON PLANS, INCLUDING ALL EROSION

AND SEDIMENT CONTROLS.

4. CLEAR AND GRUB SITE, REMOVING TREES AS INDICATED ON PLANS.

5. COMPLETE ALL STAIR TOWER CONSTRUCTION AND STABILIZATION.

6. COMPLETE ALL BACKFILL AND EARTHWORK ASSOCIATED WITH STAIR TOWER.

7. INSTALL TOWPATH SURFACING AS INDICATED ON THE SITE AND GRADING PLANS.

CONTRACTOR SHALL REPAIR AND RESTORE ALL DAMAGED AREAS OF THE

TOWPATH TO PRE EXISTING CONDITIONS AS REQUIRED DUE TO CONSTRUCTION

OPERATIONS.

8. THE CONTRACTOR SHALL CONTACT THE MDE INSPECTOR AT THE END OF THE

PROJECT PRIOR TO REMOVING SEDIMENT CONTROLS AND CLOSING THE SITE.

CONTRACTOR SHALL REMOVE ALL EROSION CONTROLS AT THE END OF THE

PROJECT AFTER THE REMOVAL OF ALL TEMPORARY FACILITIES & RESEEDING.

ALL DISTURBED AREAS MUST BE PERMANENTLY STABILIZED AT THIS TIME.

9. FOLLOWING INITIAL SOIL DISTURBANCE OR RE-DISTURBANCE, PERMANENT OR

TEMPORARY STABILIZATION SHALL BE COMPLETED BASED ON BELOW

REQUIREMENT:

· NO DISTURBED AREA SHALL BE LEFT UNSTABILIZED OVERNIGHT UNLESS THE RUNOFF WILL

BE DIRECTED TO AN MDE APPROVED SEDIMENT CONTROL DEVICE.

· THE CONTRACTOR SHALL REQUEST THAT THE INSPECTION AGENCY APPROVE THE WORK

COMPLETED AT THE STAGES OF CONSTRUCTION SPECIFIED BELOW IN ACCORDANCE WITH

THE APPROVED EROSION AND SEDIMENT CONTROL PLAN, GRADING OR BUILDING PERMIT,

AND THIS SECTION OF THE GUIDELINES.

10. A REVISED SEQUENCE OF CONSTRUCTION MAY BE SUBMITTED BY THE

CONTRACTOR. THE REVISED SEQUENCE MUST BE APPROVED BY MDE AND CO.

CSXT CONSTRUCTION REQUIREMENTS

1. THE CONTRACTOR MUST PLAN AND PERFORM THE WORK IN A MANNER SUCH

THAT THE CSXT TRACKS AT THE PROJECT LOCATION REMAIN FULLY CAPABLE OF

CARRYING RAIL TRAFFIC THROUGHOUT THE WORK PERIOD AND RAIL TRAFFIC IS

NOT DELAYED OR OTHERWISE IMPACTED DUE TO THE WORK BEING PERFORMED.

2. THE CONTRACTOR SHALL NOT BE PERMITTED TO USE THE CSXT RIGHT-OF-WAY

FOR STORAGE OF MATERIALS OR EQUIPMENT DURING CONSTRUCTION. THE

CSXT RIGHT-OF-WAY MUST REMAIN CLEAR AT ALL TIMES.

3. NO EQUIPMENT WILL BE PERMITTED TO BE STAGED WITHIN 15 FEET OF TRACK

CENTERLINE AT ANY TIME DURING THE PERFORMANCE OF THE PROJECT WORK.

4. THE CONTRACTOR SHALL BE REQUIRED TO FULLY COMPLY WITH ALL FEDERAL,

STATE, AND LOCAL ENVIRONMENTAL LAWS, REGULATIONS, STATUTES AND

ORDINANCES AT ALL TIMES.

5. CSXT FACILITIES ARE NOT SUBJECT TO "MISS UTILITY" PROGRAMS SUCH AS

MARYLAND 811. CONTRACTOR SHALL COORDINATE WITH CSXT TO HAVE ITS

FACILITIES MARKED IN THE FIELD PRIOR TO PERFORMING WORK WITH THE

POTENTIAL TO IMPACT BELOW-GRADE FACILITIES. CSXT WILL MARK OUT

EXISTING CSXT FACILITIES AT PROJECT EXPENSE.

6. A CSXT FLAGMAN MAY BE REQUIRED FOR ANY WORK WHICH REQUIRES ENTRY

ONTO THE CSXT RIGHT-OF-WAY, ANY WORK THAT HAS POTENTIAL TO FOUL CSXT

TRACK, AND ANY WORK TO BE PERFORMED WITHIN 50 FEET OF THE CENTERLINE

OF TRACK. CSXT SHALL HAVE SOLE AUTHORITY TO DETERMINE THE NEED FOR

FLAGGING REQUIRED TO PROTECT ITS OPERATIONS AND PROPERTY.

7. THE CONTRACTOR MUST ADHERE TO THE PROVISIONS OF THE CSXT INSURANCE

REQUIREMENTS, CSXT SPECIAL PROVISIONS, CSXT CONSTRUCTION SUBMISSION

CRITERIA, CSXT SOIL AND WATER MANAGEMENT POLICY, AND PROJECT-SPECIFIC

CONSTRUCTION REQUIREMENTS. IN THE EVENT THERE IS ANY DISCREPANCY OR

PERCEIVED VARIANCE BETWEEN THE PROVISIONS WITHIN THE CSXT DOCUMENTS

AND THOSE OF THE NATIONAL PARK SERVICE AS RELATED TO THIS PROJECT,

THEN THE PROVISIONS OF THE CSXT DOCUMENTS SHALL GOVERN.

8. CSXT DOES NOT PERMIT ANY REDUCTION TO THE EXISTING HORIZONTAL OR

VERTICAL CLEARANCES AT ANY TIME DURING CONSTRUCTION, OR IN THE FINAL

CONDITION. ANY PROPOSED TEMPORARY REDUCTION OF THE EXISTING

HORIZONTAL OR VERTICAL CLEARANCE MUST BE REVIEWED BY CSXT WITH NO

GUARANTEE OF APPROVAL.

9. THE USE OF ACETYLENE GAS IS PROHIBITED. TORCH CUTTING SHALL BE

PERFORMED UTILIZING OTHER MATERIALS SUCH AS PROPANE.

10. CSXT INSURANCE REQUIREMENTS, CSXT SPECIAL PROVISIONS, CSXT

CONSTRUCTION SUBMISSION CRITERIA, AND CSXT SOIL AND WATER

MANAGEMENT POLICY SHALL BE INCORPORATED INTO THE PROJECT

DOCUMENTS. THE CONTRACTOR MUST ADHERE TO THE PROVISIONS OF THESE

DOCUMENTS. IN THE EVENT THERE IS ANY DISCREPANCY OR PERCEIVED

VARIANCE BETWEEN THE PROVISIONS WITHIN THESE DOCUMENTS AND THOSE

OF NATIONAL PARK SERVICES AS RELATED TO THIS PROJECT, THE PROVISIONS

OF THE ATTACHED DOCUMENTS SHALL GOVERN.

11. MORTAR REPOINTING MATERIAL

· MORTAR FOR TUCKPOINTING SHALL BE COMPOSED OF 4 PARTS PORTLAND CEMENT, FROM 1

TO 2 PARTS HYDRATED LIME AND CLEAN WELL-GRADED SAND IN THE PROPORTION OF 3

TIMES THE SUM OF THE CEMENTITIOUS MATERIAL (CEMENT PLUS LIME). MIX IN A BATCH

MIXER FOR NOT LESS THAN FIVE MINUTES AND LONG ENOUGH FOR THOROUGH MIXING OF

ALL INGREDIENTS. AFTER WHICH CLEAN POTABLE WATER SHALL BE ADDED IN SUCH

QUANTITY AS TO FORM A STIFF PLASTIC MASS. MORTAR SHALL BE USED WITHIN 45 MINUTES

AFTER MIXING. RETEMPERING OF MORTAR SHALL NOT BE PERMITTED.

12. MORTAR REPOINTING EXECUTION

· LOOSE MATERIAL IN THE JOINTS SHALL BE COMPLETELY REMOVED TO SOUND MATERIAL TO A

MINIMUM DEPTH AS SPECIFIED ON THE PROJECT PLANS AND BY THOROUGHLY WETTING

WITH CLEAN WATER.

· TUCKPOINTING SHALL NOT BE DONE WHEN THE SURFACE TEMPERATURE OF THE MASONRY IS

BELOW 40° F OR AMBIENT TEMPERATURES BELOW 32° ARE PREDICTED WITHIN 24 HOURS OF

COMPLETION OF WORK.

· AFTER RAKING AND WETTING, THE JOINTS SHALL BE FILLED WITH MORTAR. THE MORTAR

SHALL BE WELL DRIVEN AND COMPACTED INTO THE JOINTS AND FINISHED WITH A POINTING

TOOL. MORTAR SHOULD BE ADDED IN LIFTS NO GREATER THAN ¼ INCH OR 3/8 INCH, WHICH

ALLOWS FOR THE MORTAR TO BOND TO THE SURROUNDING MASONRY AND MINIMIZES

SHRINKAGE. ONCE THE MORTAR HAS REACHED THUMBPRINT HARDNESS, A SECOND LIFT

CAN BE ADDED. THE PORTION OF THE ABUTMENT OR PIER SHALL BE KEPT WET FOR A

PERIOD OF AT LEAST 3 DAYS AFTER COMPACTION.

· ONCE THE POINTING IS COMPLETED AND THE MORTAR SET, THE MASONRY ELEMENTS SHALL

BE THOROUGHLY CLEANED AND LEFT IN A NEAT AND WORKMANLIKE CONDITION.

· MATERIAL, TEXTURE AND COLOR SHALL MATCH EXISTING ADJACENT ABUTMENT

ABBREVIATIONS:

A AREA

ABAAS ARCHITECTURAL BARRIERS ACT ACCESSIBILITY

STANDARDS

ASTM AMERICAN SOCIETY FOR TESTING & MATERIALS

B/C BOTTOM OF CURB

BIT BITUMINOUS PAVEMENT

BM BENCH MARK

BS BOTTOM OF STEP

C/C CENTER TO CENTER

CB CATCH BASIN

CO CONTRACTING OFFICER

CONC CONCRETE

CWD CLEAR WATER DIVERSION

DGA DENSE GRADED AGGREGATE

DIA DIAMETER

(E) EAST

EL. ELEV ELEVATION

EQ EQUIVALENT

FH FIRE HYDRANT

GND, GRD GROUND

HD HEAVY DUTY

HT HEIGHT

LBS POUNDS

LD LIGHT DUTY

LF LINEAR FEET

LOD LIMITS OF DISTURBANCE

MANUF MANUFACTURE

MAT'L MATERIAL

MAX MAXIMUM

MDE MARYLAND DEPARTMENT OF ENVIRONMENT

MIN MINIMUM

MG MATCH EXISTING GRADE

MH MANHOLE

(N) NORTH

NPS NATIONAL PARK SERVICE

OSHA OCCUPATIONAL SAFETY & HEALTH ADMINISTRATON

PE POLYETHYLENE

PSI POUNDS PER SQUARE INCH

PVC POLYVINYL CHLORIDE

PVMT PAVEMENT

R RADIUS

REQ'D REQUIRED

ROW RIGHT-OF-WAY

RW RETAINING WALL

(N) SOUTH

SB SOIL BORING

SF, SQFT SQUARE FEET

SPCL SPECIAL

SR LAID-BACK STONE REVETMENT

STRUC STRUCTURE

SW STONE WALL

TC TOP OF CURB

TEL TELEPHONE

TP TOP OF PAVEMENT

TS TOP OF SLAB

TW TOP OF WALL

TYP TYPICAL

UC UTILITY CROSSING

W WIRE

(W) WEST

W/ WITH

WTR WATER

WLL WORK LIMIT LINE

WOUS WATERS OF THE US

T IM

OTHY J. HOGAN

PROF ESS I ONA L ENG I NEERREG I ST ERED

NO . 4 0 9 4 1

07/19/2024

STANDARD EROSION AND SEDIMENT CONTROL NOTES

MDE REQUIRES THAT THESE NOTES, IN THEIR ENTIRETY, BE INCLUDED ON THE EROSION AND SEDIMENT CONTROL PLAN. IT IS RECOGNIZED THAT NOT EVERY NOTE MAY APPLY TO ALL PROJECTS. THE REQUIREMENT OF ANY INDIVIDUAL NOTE NOT APPLICABLE TO THE SUBJECT PROJECT IS NOT BINDING

UPON THE APPLICANT OR THE APPLICANT'S CONTRACTOR.

1. THE CONTRACTOR SHALL NOTIFY THE MARYLAND DEPARTMENT OF THE ENVIRONMENT (MDE) AT (410) 537-3510 SEVEN (7) DAYS BEFORE COMMENCING ANY LAND DISTURBING ACTIVITY AND, UNLESS WAIVED BY MDE, SHALL BE REQUIRED TO HOLD A PRE-CONSTRUCTION MEETING BETWEEN PROJECT

REPRESENTATIVES AND A REPRESENTATIVE OF MDE.

2. THE CONTRACTOR SHALL NOTIFY MDE IN WRITING AND BY TELEPHONE AT THE FOLLOWING POINTS:

A. THE REQUIRED PRE-CONSTRUCTION MEETING.

B. FOLLOWING INSTALLATION OF SEDIMENT CONTROL MEASURES.

C. PRIOR TO REMOVAL OR MODIFICATION OF ANY SEDIMENT CONTROL STRUCTURE(S).

D. PRIOR TO REMOVAL OF ALL SEDIMENT CONTROL DEVICES.

E. PRIOR TO FINAL ACCEPTANCE.

3. THE PLAN APPROVAL LETTER, APPROVED EROSION AND SEDIMENT CONTROL PLANS, DAILY LOG BOOKS, AND TEST REPORTS SHALL BE AVAILABLE FOR INSPECTION BY DULY AUTHORIZED OFFICIALS

OF MDE AND THE AGENCY RESPONSIBLE FOR THE PROJECT.

4. 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 MDE 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. THE

CONTRACTOR MUST OBTAIN PRIOR AGENCY AND MDE APPROVAL FOR MODIFICATIONS TO THE

SEDIMENT CONTROL PLAN AND/OR SEQUENCE OF CONSTRUCTION.

5. THE MDE INSPECTOR HAS THE OPTION OF REQUIRING ADDITIONAL SAFETY OR SEDIMENT CONTROL

MEASURES, IF DEEMED NECESSARY.

6. 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.

7. THE CONTRACTOR SHALL INSPECT DAILY AND MAINTAIN CONTINUOUSLY IN AN EFFECTIVE OPERATING

CONDITION ALL EROSION AND SEDIMENT CONTROL MEASURES UNTIL SUCH TIME AS THEY ARE

REMOVED WITH PRIOR PERMISSION FROM THE MDE INSPECTOR.

8. EROSION AND SEDIMENT CONTROL FOR UTILITY CONSTRUCTION SHALL BE PROVIDED IN

ACCORDANCE WITH APPROVED PLANS. UTILITY CONSTRUCTION SHALL ONLY BE FOR AREAS WITHIN THE DELINEATED LIMIT OF DISTURBANCE. CALL "MISS UTILITY" AT 1-800-257-7777 48 HOURS PRIOR TO

THE START OF WORK.

WHEN SAME DAY STABILIZATION IS APPROVED:

A. EXCAVATED TRENCH MATERIAL SHALL BE PLACED ON THE HIGH SIDE OF THE TRENCH.

B. TRENCHES 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 DAY.

9. ALL WATER REMOVED FROM EXCAVATED AREAS SHALL BE PASSED THROUGH AN MDE APPROVED DEWATERING PRACTICE OR PUMPED TO A SEDIMENT TRAP OR BASIN PRIOR TO DISCHARGE TO A

FUNCTIONAL STORM DRAIN SYSTEM OR TO STABLE GROUND SURFACE.

10. CONCRETE WASHOUT STRUCTURES SHALL BE USED WHEN CONCRETE TRUCKS, DRUMS, PUMPS, CHUTES, OR OTHER EQUIPMENT IS RINSED OR CLEANED ON-SITE.

11. CONSTRUCTION ACTIVITIES PRODUCING DUST SHALL IMPLEMENT CONTROL MEASURES TO AVOID THE SUSPENSION OF DUST PARTICLES AND/OR PREVENT DUST FROM BLOWING OFF-SITE OR TO AREAS

WITHOUT TREATMENT.

12. FOLLOWING INITIAL SOIL DISTURBANCE OR RE-DISTURBANCE, PERMANENT OR TEMPORARY

STABILIZATION SHALL BE COMPLETED WITHIN:

A. THREE (3) CALENDAR DAYS AS TO THE SURFACE OF ALL PERIMETER CONTROLS, DIKES, SWALES, DITCHES, PERIMETER SLOPES, AND ALL SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL

(3:1); AND

B. SEVEN (7) CALENDAR DAYS AS TO ALL OTHER DISTURBED OR GRADED AREAS ON THE PROJECT

SITE NOT UNDER ACTIVE GRADING.

13. VEGETATIVE STABILIZATION SHALL BE PERFORMED IN ACCORDANCE WITH THE 2011 MARYLAND

STANDARDS AND SPECIFICATIONS FOR SOIL EROSION AND SEDIMENT CONTROL. REFER TO

APPROPRIATE SPECIFICATIONS FOR TEMPORARY SEEDING, PERMANENT SEEDING, MULCHING,

SODDING, AND GROUND COVERS.

14. WHEN SEEDING, ALL DISTURBED AREAS WITH SLOPES FLATTER THAN 2:1 SHALL BE STABILIZED WITH 4 INCHES OF TOPSOIL, SEED, AND MULCH. ALL DISTURBED AREAS WITH SLOPES 2:1 OR STEEPER SHALL

BE STABILIZED WITH MATTING OVER 2 INCHES OF TOPSOIL AND SEED.

15. ALL SEDIMENT BASINS, TRAP EMBANKMENTS AND SLOPES, PERIMETER DIKES, SWALES AND ALL DISTURBED SLOPES STEEPER OR EQUAL TO 3:1 SHALL BE STABILIZED WITH SEED AND ANCHORED STRAW MULCH, SOD, OR OTHER APPROVED STABILIZATION MEASURES, AS SOON AS POSSIBLE BUT NO LATER THAN THREE (3) CALENDAR DAYS AFTER ESTABLISHMENT. ALL AREAS DISTURBED OUTSIDE

OF THE PERIMETER SEDIMENT CONTROL SYSTEM MUST BE MINIMIZED. MAINTENANCE SHALL BE

PERFORMED AS NECESSARY TO ENSURE CONTINUED STABILIZATION.

16. PERMANENT SWALES OR OTHER POINTS OF CONCENTRATED WATER FLOW SHALL BE STABILIZED WITH SEED AND AN APPROVED EROSION CONTROL MATTING, SOD, RIP-RAP, OR OTHER APPROVED

STABILIZATION MEASURES.

17. FOR STOCKPILE SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3:1), THE CONTRACTOR SHALL APPLY SEED AND ANCHORED STRAW MULCH, SOD, OR OTHER APPROVED STABILIZATION MEASURES TO THE FACE OF THE STOCKPILE WITHIN THREE (3) CALENDAR DAYS OF ACTIVITY HAVING CEASED ON THE RESPECTIVE FACE. FOR SLOPES 3:1 OR FLATTER, THE CONTRACTOR SHALL APPLY STABILIZATION MEASURES TO THE FACE OF THE STOCKPILE WITHIN SEVEN (7) CALENDAR DAYS OF ACTIVITY HAVING

CEASED ON THE RESPECTIVE FACE. MAINTENANCE SHALL BE PERFORMED AS NECESSARY TO

ENSURE CONTINUED STABILIZATION.

18. FOR FINISHED GRADING, THE CONTRACTOR SHALL PROVIDE ADEQUATE GRADIENTS TO PREVENT WATER FROM PONDING FOR MORE THAN TWENTY-FOUR (24) HOURS AFTER THE END OF A RAINFALL EVENT. DRAINAGE COURSES AND SWALE FLOW AREAS MAY TAKE AS LONG AS FORTY-EIGHT (48) HOURS AFTER THE END OF A RAINFALL EVENT TO DRAIN. AREAS DESIGNATED TO HAVE STANDING

WATER SHALL NOT BE REQUIRED TO MEET THIS REQUIREMENT.

19. 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 REQUIREMENTS. WHERE SAFETY FENCE IS DEEMED

APPROPRIATE AND LOCAL ORDINANCES DO NOT SPECIFY FENCING SIZES AND TYPES, THE

FOLLOWING SHALL BE USED AS A MINIMUM STANDARD: THE SAFETY FENCE SHALL 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 SHALL BE MAINTAINED AND IN GOOD CONDITION AT ALL

TIMES.

20. ALL SEDIMENT TRAP DEPTH DIMENSIONS ARE RELATIVE TO THE OUTLET ELEVATION. ALL TRAPS SHALL HAVE A STABLE OUTFALL. ALL TRAPS AND BASINS SHALL HAVE STABLE INFLOW POINTS.

21. SEDIMENT SHALL BE REMOVED AND THE TRAP OR BASIN RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE QUARTER OF THE TOTAL DEPTH OF THE TRAP OR BASIN. TOTAL DEPTH SHALL BE MEASURED FROM THE TRAP OR BASIN BOTTOM TO THE CREST OF THE

OUTLET.

22. 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 SHALL BE DIRECTED TO AN MDE APPROVED SEDIMENT TRAPPING

DEVICE PRIOR TO RELEASE FROM THE SITE. A SUMP PIT MAY BE USED IF SEDIMENT TRAPS

THEMSELVES ARE BEING PUMPED OUT.

23. 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 NOT LATER THAN THREE (3) CALENDAR DAYS AFTER ESTABLISHMENT FOR SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3:1) AND SEVEN

(7) CALENDAR DAYS FOR FLATTER SLOPES. 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.

24. TEMPORARY SEDIMENT CONTROL DEVICES SHALL BE REMOVED WITH PERMISSION OF THE MDE

INSPECTOR WITHIN THIRTY (30) CALENDAR DAYS FOLLOWING ESTABLISHMENT OF PERMANENT

STABILIZATION IN ALL CONTRIBUTORY DRAINAGE AREAS. UPON REMOVAL OF SEDIMENT CONTROL DEVICES, THE AREA DISTURBED BY REMOVAL SHALL BE STABILIZED WITH TOPSOIL, SEED, AND MULCH, OR AS SPECIFIED, WITHIN 24 HOURS OF SAID REMOVAL. STORMWATER MANAGEMENT STRUCTURES

USED TEMPORARILY FOR SEDIMENT CONTROL SHALL BE CONVERTED TO THE PERMANENT

CONFIGURATION WITHIN THIS TIME PERIOD AS WELL.

25. OFF-SITE SPOIL OR BORROW AREAS ON STATE OR FEDERAL PROPERTY SHALL HAVE PRIOR

APPROVAL BY MDE AND OTHER APPLICABLE STATE, FEDERAL, AND LOCAL AGENCIES; OTHERWISE

APPROVAL SHALL BE GRANTED BY THE LOCAL AUTHORITIES. ALL WASTE AND BORROW AREAS

OFF-SITE SHALL BE PROTECTED BY SEDIMENT CONTROL MEASURES AND STABILIZED.

26. SITE INFORMATION

A. LOD 1 AREA DISTURBED ACRES

B. LOD 2 AREA DISTURBED ACRES

C. TOTAL AREA DISTURBED ACRES

D. TOTAL CUT CUBIC YARDS

E. TOTAL FILL CUBIC YARDS

F. OFF-SITE WASTE / BORROW AREA LOCATION

BEST MANAGEMENT PRACTICES FOR WORKING IN NONTIDAL WETLANDS, WETLAND

BUFFERS, WATERWAYS, AND 100-YEAR FLOODPLAINS

1. NO EXCESS FILL, CONSTRUCTION MATERIAL, OR DEBRIS SHALL BE STOCKPILED OR STORED IN NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, WATERWAYS, OR THE 100-YEAR FLOODPLAIN.

2. PLACE MATERIALS IN A LOCATION AND MANNER WHICH DOES NOT ADVERSELY IMPACT SURFACE OR SUBSURFACE WATER FLOW INTO OR OUT OF NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, WATERWAYS, OR THE 100-YEAR FLOODPLAIN.

3. DO NOT USE THE EXCAVATED MATERIAL AS BACKFILL IF IT CONTAINS WASTE METAL PRODUCTS, UNSIGHTLY DEBRIS, TOXIC MATERIAL, OR ANY OTHER DELETERIOUS SUBSTANCE. IF ADDITIONAL

BACKFILL IS REQUIRED, USE CLEAN MATERIAL FREE OF WASTE METAL PRODUCTS, UNSIGHTLY

DEBRIS, TOXIC MATERIAL, OR ANY OTHER DELETERIOUS SUBSTANCE.

4. PLACE HEAVY EQUIPMENT ON MATS OR SUITABLY OPERATE THE EQUIPMENT TO PREVENT DAMAGE

TO NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, WATERWAYS, OR THE 100-YEAR

FLOODPLAIN.

5. REPAIR AND MAINTAIN ANY SERVICEABLE STRUCTURE OF FILL SO THERE IS NO PERMANENT LOSS OF NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, OR WATERWAYS, OR 100-YEAR FLOODPLAIN IN

EXCESS OF THAT LOST UNDER THE ORIGINALLY AUTHORIZED STRUCTURE OF FILL.

6. RECTIFY ANY NONTIDAL WETLANDS, WETLAND BUFFERS, WATERWAYS, OR 100-YEAR FLOODPLAIN

TEMPORARILY IMPACTED BY ANY CONSTRUCTION.

7. ALL STABILIZATION IN THE NONTIDAL WETLAND AND NONTIDAL WETLAND BUFFER SHALL CONSIST OF THE FOLLOWING SPECIES: ANNUAL RYEGRASS (Lolium multiflorum), MILLET (Setaria italica), BARLEY (Hordeum sp.), OATS (Uniola sp.), AND/OR RYE (Secale cereale). THESE SPECIES WILL ALLOW FOR THE

STABILIZATION OF THE SITE WHILE ALSO ALLOWING FOR THE VOLUNTARY REVEGETATION OF

NATURAL WETLAND SPECIES. OTHER NON-PERSISTENT VEGETATION MAY BE ACCEPTABLE, BUT MUST BE APPROVED BY THE NONTIDAL WETLANDS AND WATERWAYS DIVISION. KENTUCKY 31 FESCUE SHALL NOT BE UTILIZED IN WETLAND OR BUFFER AREAS. THE AREA SHOULD BE SEEDED AN MULCHED TO

REDUCE EROSION AFTER CONSTRUCTION ACTIVITIES HAVE BEEN COMPLETED.

8. AFTER INSTALLATION HAS BEEN COMPLETED, MAKE POST-CONSTRUCTION GRADES AND ELEVATIONS

THE SAME AS THE ORIGINAL GRADES AND ELEVATIONS IN TEMPORARILY IMPACTED AREAS.

9. TO PROTECT AQUATIC SPECIES, IN-STREAM WORK IS PROHIBITED AS DETERMINED BY THE

CLASSIFICATION OF THE STREAM:

USE I WATERS: IN-STREAM WORK SHALL NOT BE CONDUCTED DURING THE PERIOD MARCH 1

THROUGH JUNE 15, INCLUSIVE, DURING ANY YEAR.

USE III WATERS: IN-STREAM WORK SHALL NOT BE CONDUCTED DURING THE PERIOD

OCTOBER 1 THROUGH APRIL 30, INCLUSIVE, DURING ANY YEAR.

USE IV WATERS: IN-STREAM WORK SHALL NOT BE CONDUCTED DURING THE PERIOD MARCH 1

THROUGH MAY 31, INCLUSIVE, DURING ANY YEAR.

10. STORMWATER RUNOFF FROM IMPERVIOUS SURFACES SHALL BE CONTROLLED TO PREVENT THE

WASHING OF DEBRIS INTO THE WATERWAY.

11. CULVERTS SHALL BE CONSTRUCTED AN ANY RIPRAP PLACED SO AS NOT TO OBSTRUCT THE

MOVEMENT OF AQUATIC SPECIES, UNLESS THE PURPOSE OF THE ACTIVITY IS TO IMPOUND WATER.

ADDITIONAL EROSION AND SEDIMENT CONTROL NOTES

1. ALL EQUIPMENT & VEHICLES MUST BE EQUIPPED TO CONTROL ANY SPILLS OF OILS, FLUIDS, RUNOFF, AND LEAKAGE FROM ANY MATERIAL BEING HAULED TO OR FROM THE WORK SITE.

2. VEGETATION STABILIZATION NOTES AND SEEDING SUMMARY TABLES ARE SHOWN ON SHEETS 4, 5, AND 6.

13.75

- CONTRACTOR TO SUBMIT.

7.47

0.23 0.37

0.60

APPROVED

BY: COLLIN HILTNER

MD DEPT ENVIRONMENT

SEDIMENT & STORMWATER

PLAN REVIEW DIVISION

T IM

OTHY J. HOGAN

PROF ESS I ONA L ENG I NEERREG I ST ERED

NO . 4 0 9 4 1

07/19/2024

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.

EFFECTS ON WATER QUALITY AND QUANTITY

STABILIZATION PRACTICES ARE USED TO PROMOTE THE ESTABLISHMENT OF VEGETATION ON EXPOSED SOIL. WHEN SOIL IS STABILIZED WITH VEGETATION, THE SOIL IS LESS LIKELY TO ERODE AND MORE LIKELY

TO ALLOW INFILTRATION OF RAINFALL, THEREBY REDUCING SEDIMENT LOADS AND RUNOFF TO

DOWNSTREAM AREAS.

PLANTING VEGETATION IN DISTURBED AREAS WILL HAVE AN EFFECT ON THE WATER BUDGET, ESPECIALLY ON VOLUMES AND RATES OF RUNOFF, INFILTRATION, EVAPORATION, TRANSPIRATION, PERCOLATION, AND

GROUNDWATER RECHARGE. OVER TIME, VEGETATION WILL

INCREASE ORGANIC MATTER CONTENT AND IMPROVE THE WATER HOLDING CAPACITY OF THE SOIL AND

SUBSEQUENT PLANT GROWTH.

VEGETATION WILL HELP REDUCE THE MOVEMENT OF SEDIMENT, NUTRIENTS, AND OTHER CHEMICALS

CARRIED BY RUNOFF TO RECEIVING WATERS. PLANTS WILL ALSO HELP PROTECT GROUNDWATER

SUPPLIES BY ASSIMILATING THOSE SUBSTANCES PRESENT WITHIN THE ROOT ZONE.

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-4-1 STANDARDS AND SPECIFICATIONS FOR INCREMENTAL STABILIZATION

DEFINITION

ESTABLISHMENT OF VEGETATIVE COVER ON CUT AND FILL SLOPES.

PURPOSE

TO PROVIDE TIMELY VEGETATIVE COVER ON CUT AND FILL SLOPES AS WORK PROGRESSES.

CONDITIONS WHERE PRACTICE APPLIES

ANY CUT OR FILL SLOPE GREATER THAN 15 FEET IN HEIGHT. THIS PRACTICE ALSO APPLIES TO

STOCKPILES.

CRITERIA

A. INCREMENTAL STABILIZATION - CUT SLOPES

1. EXCAVATE AND STABILIZE CUT SLOPES IN INCREMENTS NOT TO EXCEED 15 FEET IN HEIGHT.

PREPARE SEEDBED AND APPLY SEED AND MULCH ON ALL CUT SLOPES AS THE WORK

PROGRESSES.

2. CONSTRUCTION SEQUENCE EXAMPLE (REFER TO FIGURE B.1):

a. CONSTRUCT AND STABILIZE ALL TEMPORARY SWALES OR DIKES THAT WILL BE USED TO

CONVEY RUNOFF AROUND THE EXCAVATION.

b. PERFORM PHASE 1 EXCAVATION, PREPARE SEEDBED, AND STABILIZE.

c. PERFORM PHASE 2 EXCAVATION, PREPARE SEEDBED, AND STABILIZE. OVERSEED PHASE 1

AREAS AS NECESSARY.

d. PERFORM FINAL PHASE EXCAVATION, PREPARE SEEDBED, AND STABILIZE. OVERSEED

PREVIOUSLY SEEDED AREAS AS NECESSARY.

NOTE: ONCE EXCAVATION HAS BEGUN THE OPERATION SHOULD BE CONTINUOUS FROM GRUBBING

THROUGH THE COMPLETION OF GRADING AND PLACEMENT OF TOPSOIL (IF REQUIRED) AND

PERMANENT SEED AND MULCH. ANY INTERRUPTIONS IN THE OPERATION OR COMPLETING THE

OPERATION OUT OF THE SEEDING SEASON WILL NECESSITATE THE APPLICATION OF TEMPORARY

STABILIZATION.

FIGURE B.1: INCREMENTAL STABILIZATION – CUT

B. INCREMENTAL STABILIZATION - FILL SLOPES

1. CONSTRUCT AND STABILIZE FILL SLOPES IN INCREMENTS NOT TO EXCEED 15 FEET IN HEIGHT.

PREPARE SEEDBED AND APPLY SEED AND MULCH ON ALL SLOPES AS THE WORK PROGRESSES.

2. STABILIZE SLOPES IMMEDIATELY WHEN THE VERTICAL HEIGHT OF A LIFT REACHES 15 FEET, OR

WHEN THE GRADING OPERATION CEASES AS PRESCRIBED IN THE PLANS.

3. AT THE END OF EACH DAY, INSTALL TEMPORARY WATER CONVEYANCE PRACTICE(S), AS

NECESSARY, TO INTERCEPT SURFACE RUNOFF AND CONVEY IT DOWN THE SLOPE IN A

NON-EROSIVE MANNER.

4. CONSTRUCTION SEQUENCE EXAMPLE (REFER TO FIGURE B.2):

a. CONSTRUCT AND STABILIZE ALL TEMPORARY SWALES OR DIKES THAT WILL BE USED TO DIVERT

RUNOFF AROUND THE FILL. CONSTRUCT SILT FENCE ON LOW SIDE OF FILL UNLESS OTHER

METHODS SHOWN ON THE PLANS ADDRESS THIS AREA.

b. AT THE END OF EACH DAY, INSTALL TEMPORARY WATER CONVEYANCE PRACTICE(S), AS

NECESSARY, TO INTERCEPT SURFACE RUNOFF AND CONVEY IT DOWN THE SLOPE IN A

NON-EROSIVE MANNER.

c. PLACE PHASE 1 FILL, PREPARE SEEDBED, AND STABILIZE.

d. PLACE PHASE 2 FILL, PREPARE SEEDBED, AND STABILIZE.

e. PLACE FINAL PHASE FILL, PREPARE SEEDBED, AND STABILIZE. OVERSEED PREVIOUSLY SEEDED

AREAS AS NECESSARY.

NOTE: ONCE THE PLACEMENT OF FILL HAS BEGUN THE OPERATION SHOULD BE CONTINUOUS FROM GRUBBING THROUGH THE COMPLETION OF GRADING AND PLACEMENT OF TOPSOIL (IF REQUIRED) AND

PERMANENT SEED AND MULCH. ANY INTERRUPTIONS IN THE OPERATION OR COMPLETING THE

OPERATION OUT OF THE SEEDING SEASON WILL NECESSITATE THE APPLICATION OF TEMPORARY

STABILIZATION.

FIGURE B.2: INCREMENTAL STABILIZATION – FILL

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. A SOIL TEST IS REQUIRED FOR ANY EARTH DISTURBANCE OF 5 ACRES OR MORE. THE MINIMUM

SOIL CONDITIONS REQUIRED FOR PERMANENT VEGETATIVE ESTABLISHMENT ARE:

i. SOIL PH BETWEEN 6.0 AND 7.0.

ii. SOLUBLE SALTS LESS THAN 500 PARTS PER MILLION (PPM).

iii. SOIL CONTAINS LESS THAN 40 PERCENT CLAY BUT ENOUGH FINE GRAINED MATERIAL (GREATER

THAN 30 PERCENT SILT PLUS CLAY) TO PROVIDE THE CAPACITY TO HOLD A MODERATE AMOUNT

OF MOISTURE. AN EXCEPTION: IF LOVEGRASS WILL BE PLANTED, THEN A SANDY SOIL (LESS

THAN 30 PERCENT SILT PLUS CLAY) WOULD BE ACCEPTABLE.

iv. SOIL CONTAINS 1.5 PERCENT MINIMUM ORGANIC MATTER BY WEIGHT.

v. SOIL CONTAINS SUFFICIENT PORE SPACE TO PERMIT ADEQUATE ROOT PENETRATION.

b. APPLICATION OF AMENDMENTS OR TOPSOIL IS REQUIRED IF ON-SITE SOILS DO NOT MEET THE

ABOVE CONDITIONS.

c. 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.

d. APPLY SOIL AMENDMENTS AS SPECIFIED ON THE APPROVED PLAN OR AS INDICATED BY THE

RESULTS OF A SOIL TEST.

e. 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. TOPSOILING

1. TOPSOIL IS PLACED OVER PREPARED SUBSOIL PRIOR TO ESTABLISHMENT OF PERMANENT

VEGETATION. THE PURPOSE IS TO PROVIDE A SUITABLE SOIL MEDIUM FOR VEGETATIVE GROWTH.

SOILS OF CONCERN HAVE LOW MOISTURE CONTENT, LOW NUTRIENT LEVELS, LOW PH, MATERIALS

TOXIC TO PLANTS, AND/OR UNACCEPTABLE SOIL GRADATION.

2. TOPSOIL SALVAGED FROM AN EXISTING SITE MAY BE USED PROVIDED IT MEETS THE STANDARDS AS SET FORTH IN THESE SPECIFICATIONS. TYPICALLY, THE DEPTH OF TOPSOIL TO BE SALVAGED FOR A GIVEN SOIL TYPE CAN BE FOUND IN THE REPRESENTATIVE SOIL PROFILE SECTION IN THE

SOIL SURVEY PUBLISHED BY USDA-NRCS.

3. TOPSOILING IS LIMITED TO AREAS HAVING 2:1 OR FLATTER SLOPES WHERE:

a. THE TEXTURE OF THE EXPOSED SUBSOIL/PARENT MATERIAL IS NOT ADEQUATE TO PRODUCE

VEGETATIVE GROWTH.

b. THE SOIL MATERIAL IS SO SHALLOW THAT THE ROOTING ZONE IS NOT DEEP ENOUGH TO

SUPPORT PLANTS OR FURNISH CONTINUING SUPPLIES OF MOISTURE AND PLANT NUTRIENTS.

c. THE ORIGINAL SOIL TO BE VEGETATED CONTAINS MATERIAL TOXIC TO PLANT GROWTH.

d. THE SOIL IS SO ACIDIC THAT TREATMENT WITH LIMESTONE IS NOT FEASIBLE.

4. AREAS HAVING SLOPES STEEPER THAN 2:1 REQUIRE SPECIAL CONSIDERATION AND DESIGN.

5. TOPSOIL SPECIFICATIONS: SOIL TO BE USED AS TOPSOIL MUST MEET THE FOLLOWING CRITERIA:

a. TOPSOIL MUST BE A LOAM, SANDY LOAM, CLAY LOAM, SILT LOAM, SANDY CLAY LOAM, OR LOAMY

SAND. OTHER SOILS MAY BE USED IF RECOMMENDED BY AN AGRONOMIST OR SOIL SCIENTIST

AND APPROVED BY THE APPROPRIATE APPROVAL AUTHORITY. TOPSOIL MUST NOT BE A

MIXTURE OF CONTRASTING TEXTURED SUBSOILS AND MUST CONTAIN LESS THAN 5 PERCENT BY

VOLUME OF CINDERS, STONES, SLAG, COARSE FRAGMENTS, GRAVEL, STICKS, ROOTS, TRASH,

OR OTHER MATERIALS LARGER THAN 1½ INCHES IN DIAMETER.

b. TOPSOIL MUST BE FREE OF NOXIOUS PLANTS OR PLANT PARTS SUCH AS BERMUDA GRASS, QUACK GRASS, JOHNSON GRASS, NUT SEDGE, POISON IVY, THISTLE, OR OTHERS AS SPECIFIED.

c. TOPSOIL SUBSTITUTES OR AMENDMENTS, AS RECOMMENDED BY A QUALIFIED AGRONOMIST OR SOIL SCIENTIST AND APPROVED BY THE APPROPRIATE APPROVAL AUTHORITY, MAY BE USED IN

LIEU OF NATURAL TOPSOIL.

6. TOPSOIL APPLICATION

a. EROSION AND SEDIMENT CONTROL PRACTICES MUST BE MAINTAINED WHEN APPLYING TOPSOIL.

b. UNIFORMLY DISTRIBUTE TOPSOIL IN A 5 TO 8 INCH LAYER AND LIGHTLY COMPACT TO A MINIMUM

THICKNESS OF 4 INCHES. SPREADING IS TO BE PERFORMED IN SUCH A MANNER THAT SODDING OR SEEDING CAN PROCEED WITH A MINIMUM OF ADDITIONAL SOIL PREPARATION AND TILLAGE.

ANY IRREGULARITIES IN THE SURFACE RESULTING FROM TOPSOILING OR OTHER OPERATIONS

MUST BE CORRECTED IN ORDER TO PREVENT THE FORMATION OF DEPRESSIONS OR WATER

POCKETS.

c. TOPSOIL MUST NOT BE PLACED IF THE TOPSOIL OR SUBSOIL IS IN A FROZEN OR MUDDY

CONDITION, WHEN THE SUBSOIL IS EXCESSIVELY WET OR IN A CONDITION THAT MAY

OTHERWISE BE DETRIMENTAL TO PROPER GRADING AND SEEDBED PREPARATION.

C. SOIL AMENDMENTS (FERTILIZER AND LIME SPECIFICATIONS)

1. SOIL TESTS MUST BE PERFORMED TO DETERMINE THE EXACT RATIOS AND APPLICATION RATES FOR BOTH LIME AND FERTILIZER ON SITES HAVING DISTURBED AREAS OF 5 ACRES OR MORE. SOIL

ANALYSIS MAY BE PERFORMED BY A RECOGNIZED PRIVATE OR COMMERCIAL LABORATORY. SOIL

SAMPLES TAKEN FOR ENGINEERING PURPOSES MAY ALSO BE USED FOR CHEMICAL ANALYSES.

2. 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.

3. 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 MAGNESIUMOXIDE). 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.

4. 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.

5. 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.

(SPECIFICATIONS CONTINUE ON SHEET G4)

APPROVED

BY: COLLIN HILTNER

MD DEPT ENVIRONMENT

SEDIMENT & STORMWATER

T IM

OTHY J. HOGAN

PROF ESS I ONA L ENG I NEERREG I ST ERED

NO . 4 0 9 4 1

07/19/2024

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. REFER TO TABLE B.4 REGARDING THE QUALITY OF SEED.

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 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.

b. WOOD CELLULOSE FIBER MULCH (WCFM) CONSISTING OF SPECIALLY PREPARED WOOD

CELLULOSE PROCESSED INTO A UNIFORM FIBROUS PHYSICAL STATE.

i. WCFM IS TO BE DYED GREEN OR CONTAIN A GREEN DYE IN THE PACKAGE THAT WILL PROVIDE

AN APPROPRIATE COLOR TO FACILITATE VISUAL INSPECTION OF THE UNIFORMLY SPREAD

SLURRY.

ii. WCFM, INCLUDING DYE, MUST CONTAIN NO GERMINATION OR GROWTH INHIBITING FACTORS.

iii. WCFM MATERIALS ARE TO BE MANUFACTURED AND PROCESSED IN SUCH A MANNER THAT THE

WOOD CELLULOSE FIBER MULCH WILL REMAIN IN UNIFORM SUSPENSION IN WATER UNDER

AGITATION AND WILL BLEND WITH SEED, FERTILIZER AND OTHER ADDITIVES TO FORM A

HOMOGENEOUS SLURRY. THE MULCH MATERIAL MUST FORM A BLOTTER-LIKE GROUND COVER,

ON APPLICATION, HAVING MOISTURE ABSORPTION AND PERCOLATION PROPERTIES AND MUST

COVER AND HOLD GRASS SEED IN CONTACT WITH THE SOIL WITHOUT INHIBITING THE GROWTH

OF THE GRASS SEEDLINGS.

iv. WCFM MATERIAL MUST NOT CONTAIN ELEMENTS OR COMPOUNDS AT CONCENTRATION LEVELS

THAT WILL BE PHYTO-TOXIC.

v. WCFM MUST CONFORM TO THE FOLLOWING PHYSICAL REQUIREMENTS: FIBER LENGTH OF APPROXIMATELY 10 MILLIMETERS, DIAMETER APPROXIMATELY 1 MILLIMETER, PH RANGE OF 4.0

TO 8.5, ASH CONTENT OF 1.6 PERCENT MAXIMUM AND WATER HOLDING CAPACITY OF 90

PERCENT MINIMUM.

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 2 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 2.5 TONS PER ACRE.

c. WOOD CELLULOSE FIBER USED AS MULCH MUST BE APPLIED AT A NET DRY WEIGHT OF 1500

POUNDS PER MIX THE WOOD CELLULOSE FIBER WITH WATER TO ATTAIN A MIXTURE WITH A

MAXIMUM OF 50 POUNDS OF WOOD CELLULOSE FIBER PER 100 GALLONS OF WATER.

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.

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.

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.

CRITERIA

1. SELECT ONE OR MORE OF THE SPECIES OR SEED MIXTURES LISTED IN TABLE B.1 FOR THE

APPROPRIATE PLANT HARDINESS ZONE (FROM FIGURE B.3), AND ENTER THEM IN THE TEMPORARY

SEEDING SUMMARY BELOW ALONG WITH APPLICATION RATES, SEEDING DATES AND SEEDING

DEPTHS. IF THIS SUMMARY IS NOT PUT ON THE PLAN AND COMPLETED, THEN TABLE B.1 PLUS

FERTILIZER AND LIME RATES MUST BE PUT ON THE PLAN.

2. FOR SITES HAVING SOIL TESTS PERFORMED, USE AND SHOW THE RECOMMENDED RATES BY THE

TESTING AGENCY. SOIL TESTS ARE NOT REQUIRED FOR TEMPORARY SEEDING.

3. WHEN STABILIZATION IS REQUIRED OUTSIDE OF A SEEDING SEASON, APPLY SEED AND MULCH OR STRAW MULCH ALONE AS PRESCRIBED IN SECTION B-4-3.A.1.B AND MAINTAIN UNTIL THE NEXT

SEEDING SEASON

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. SELECT ONE OR MORE OF THE SPECIES OR MIXTURES LISTED IN TABLE B.3 FOR THE APPROPRIATE PLANT HARDINESS ZONE (FROM FIGURE B.3) AND BASED ON THE SITE CONDITION

OR PURPOSE FOUND ON TABLE B.2. ENTER SELECTED MIXTURE(S), APPLICATION RATES, AND

SEEDING DATES IN THE PERMANENT SEEDING SUMMARY. THE SUMMARY IS TO BE PLACED ON

THE PLAN.

b. ADDITIONAL PLANTING SPECIFICATIONS FOR EXCEPTIONAL SITES SUCH AS SHORELINES, STREAM BANKS, 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.

c. FOR SITES HAVING DISTURBED AREA OVER 5 ACRES, USE AND SHOW THE RATES

RECOMMENDED BY THE SOIL TESTING AGENCY.

d. 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 .

(SPECIFICATIONS CONTINUE ON SHEET G5)

APPROVED

BY: COLLIN HILTNER

MD DEPT ENVIRONMENT

SEDIMENT & STORMWATER

T IM

OTHY J. HOGAN

PROF ESS I ONA L ENG I NEERREG I ST ERED

NO . 4 0 9 4 1

07/19/2024

B-4-5 STANDARDS AND SPECIFICATIONS FOR PERMANENT STABILIZATION (CONT.)

2. TURFGRASS MIXTURES

a. AREAS WHERE TURFGRASS MAY BE DESIRED INCLUDE LAWNS, PARKS, PLAYGROUNDS, AND

COMMERCIAL SITES WHICH WILL RECEIVE A MEDIUM TO HIGH LEVEL OF MAINTENANCE.

b. SELECT ONE OR MORE OF THE SPECIES OR MIXTURES LISTED BELOW BASED ON THE SITE

CONDITIONS OR PURPOSE. ENTER SELECTED MIXTURE(S), APPLICATION RATES, AND SEEDING

DATES IN THE PERMANENT SEEDING SUMMARY. THE SUMMARY IS TO BE PLACED ON THE PLAN.

i. KENTUCKY BLUEGRASS: FULL SUN MIXTURE: FOR USE IN AREAS THAT RECEIVE INTENSIVE

MANAGEMENT. IRRIGATION REQUIRED IN THE AREAS OF CENTRAL MARYLAND AND EASTERN

SHORE. RECOMMENDED CERTIFIED KENTUCKY BLUEGRASS CULTIVARS SEEDING RATE: 1.5 TO

2.0 POUNDS PER 1000 SQUARE FEET. CHOOSE A MINIMUM OF THREE KENTUCKY BLUEGRASS

CULTIVARS WITH EACH RANGING FROM 10 TO 35 PERCENT OF THE TOTAL MIXTURE BY WEIGHT.

ii. KENTUCKY BLUEGRASS/PERENNIAL RYE: FULL SUN MIXTURE: FOR USE IN FULL SUN AREAS

WHERE RAPID ESTABLISHMENT IS NECESSARY AND WHEN TURF WILL RECEIVE MEDIUM TO

INTENSIVE MANAGEMENT. CERTIFIED PERENNIAL RYEGRASS CULTIVARS/CERTIFIED KENTUCKY

BLUEGRASS SEEDING RATE: 2 POUNDS MIXTURE PER 1000 SQUARE FEET. CHOOSE A MINIMUM

OF THREE KENTUCKY BLUEGRASS CULTIVARS WITH EACH RANGING FROM 10 TO 35 PERCENT OF

THE TOTAL MIXTURE BY WEIGHT.

iii. TALL FESCUE/KENTUCKY BLUEGRASS: FULL SUN MIXTURE: FOR USE IN DROUGHT PRONE AREAS

AND/OR FOR AREAS RECEIVING LOW TO MEDIUM MANAGEMENT IN FULL SUN TO MEDIUM SHADE.

RECOMMENDED MIXTURE INCLUDES; CERTIFIED TALL FESCUE CULTIVARS 95 TO 100 PERCENT,

CERTIFIED KENTUCKY BLUEGRASS CULTIVARS 0 TO 5 PERCENT. SEEDING RATE: 5 TO 8 POUNDS

PER 1000 SQUARE FEET. ONE OR MORE CULTIVARS MAY BE BLENDED.

iv. KENTUCKY BLUEGRASS/FINE FESCUE: SHADE MIXTURE: FOR USE IN AREAS…