Page 69 - planning-committee-packet

ML SUBMERGED GRAVEL WETLAND CONSTRUCTION AND PLANS ISSUED FOR:
INSTALLATION GUIDELINES: Review
REVISIONS:
1. ALL ON-SITE DISTURBED AREAS SHOULD BE STABILIZED PRIOR TO
NW N NE ALLOWING RUNOFF TO ENTER THE NEWLY CONSTRUCTED WETLAND. No. Revision/Issue: Date
W Ma r y l a n d S t a t e Gr i d NAD 8 3 E 2. THE PROPOSED LOCATION OF A SUBMERGED GRAVEL WETLAND
SHALL BE PROTECTED DURING CONSTRUCTION. SURFACE RUNOFF
SW SE
N/F STANLEY J. SMUCK S SHALL BE DIVERTED AWAY FROM THE PRACTICE DURING GRADING
TAX MAP 301, PARCEL 682 OPERATIONS. FLOW SPLITTERS AND OTHER CONVEYANCE
ML DEED: RHO 1613/ 394 INFRASTRUCTURE SHALL BE BLOCKED.
3. WETLAND CONSTRUCTION SHALL BE PERFORMED WITH
LIGHTWEIGHT, WIDE-TRACKED EQUIPMENT TO MINIMIZE
DISTURBANCE AND COMPACTION. EXCAVATED MATERIALS SHALL BE
PLACED IN A CONTAINED AREA. ANY PUMPING OPERATIONS SHALL
DISCHARGE FILTERED WATER TO A STABLE OUTLET.
TYPICAL PALUSTRINE FORESTED WETLANDS 4. THE AGGREGATE SHALL BE COMPOSED OF AN 18 TO 48 INCH LAYER
DITCH OF CLEAN WASHED, UNIFORMLY GRADED MATERIAL WITH A
CENTERLINE
TYPICAL DITCH TIE-LINE BOUNDARY RUNS POROSITY OR 40%. ROUNDED BANK RUN GRAVEL IS RECOMMENDED.
FOR COMPUTATIONAL BY AND WITH THE
PURPOSES ONLY
DITCH CENTERLINE MAINTENANCE AND INSPECTION:
1. REGULAR INSPECTIONS SHALL BE MADE DURING THE FOLLOWING
STAGES OF CONSTRUCTION:
- DURING EXCAVATION TO SUBGRADE.
DB. 7468 PG. 125
ITEM ONE - DURING PLACEMENT OF BACKFILL OF PERFORATED INLET PIPE AND
OBSERVATION WELLS.
- DURING PLACEMENT OF GEOTEXTILES AND ALL FILTER MEDIA.
- DURING CONSTRUCTION OF ANY APPURTENANT CONVEYANCE
N/F NEEV PROPERTIES, LLC SYSTEMS SUCH AS DIVERSION STRUCTURES, INLETS, OUTLETS, AND
TAX MAP 301, PARCEL 683 FLOW DISTRIBUTION STRUCTURES.
LOT A 25' WETLAND OFFSET
DEED: SRB 7468/ 125 - UPON COMPLETION OF FINAL GRADING AND ESTABLISHMENT OF
PLAT: SVH 230/ 5 & PERMANENT STABILIZATION, AND BEFORE ALLOWING RUNOFF TO
SVH 231/ 47 & 48, FWH 56/ 1
ENTER THE WETLAND.
2. PRIVATELY OWNED PRACTICES SHALL HAVE A MAINTENANCE PLAN SOUTH MOON UNDER TOWN OF BERLIN WORCESTER COUNTY, MARYLAND
AND SHALL BE PROTECTED BY EASEMENT, DEED RESTRICTION,
ORDINANCE, OR OTHER LEGAL MEASURES PREVENTING ITS NEGLECT,
DB. 7468 PG. 125
ITEM THREE ADVERSE ALTERATION, AND REMOVAL.
SEQUENCE OF CONSTRUCTION: SGW2
3. DURING THE FIRST YEAR OF OPERATION, INSPECTIONS SHOULD BE
CONDUCTED AFTER EVERY MAJOR STORM AND POORLY ESTABLISHED
Step 1: Stabilize the Drainage Area. Dewater facility during the transition from TSB-2 to SGW2 using approved skimmering device
AREAS REVEGETATED.
or geotextile bag. Regrade to design dimensions.
Step 2: Assemble Construction Materials on-site, make sure they meet design specifications, and prepare any staging areas. Ensure 3.1. INSPECT TO BE CERTAIN SYSTEM DRAINS WITHIN 24-72 HRS
that appropriate compaction and dewatering equipment is available. Locate the project benchmark and if necessary transfer (WITHIN THE DESIGN PERIOD, BUT ALSO NOT SO QUICKLY AS TO
25' WETLAND OFFSET
MINIMIZE STORMWATER TREATMENT)).
PROPOSED SUBMERGED SGW-1 OUTFALL ROP-II INV. OUT: 21.50 OUTFALL N/F NEEV PROPERTIES, LLC Step 3: a benchmark nearer to the Submerged Gravel Wetland location for use during construction. 3.2. WATERING PLANTS AS NECESSARY DURING THE FIRST GROWING
150 ft. MDSHA R.O.W. (U.S. 113)
18" HDPE
TAX MAP 301, PARCEL 683
Install Erosion and Sediment Controls prior to construction, including temporary de-watering devices and stormwater
GRAVEL WETLANDS
L: 49.93'
30' WIDE ACCESS EASEMENT DB. ODC 42 PG. 450 10' MAINTENANCE ROP-I BH-4 SGW1 BH-5 BH-6 D-14 STORMWATER Step 5: Install Outfall Structure, Pipe, and riprap. 4. 3.5. QUARTERLY INSPECTION OF SOIL AND REPAIRING ERODED
DEED: SRB 7468/ 125
diversion practices. All areas surrounding the Wet Pond that are graded or denuded during construction must be planted
S: 0.34%
SEE DETAIL D-10
SEASON
ITEM TWO
SHEET C-501
PLAT: FWH 56/ 1
with turf grass, native plantings, or other approved methods of soil stabilization. See sheet C-501 for details.
3.3. RE-VEGETATING POORLY ESTABLISHED AREAS AS NECESSARY
ODC 42/ 452
Clear and Strip the embankment area to the desired sub-grade.
Step 4:
RIP RAP
3.4. TREATING DISEASED VEGETATION AS NECESSARY
EASEMENT
EXISTING
Step 6:
Excavate/Grade until the appropriate elevation and desired contours are achieved for the bottom and side slopes of SGW1.
AREAS, ESPECIALLY ON SLOPES
Install base stone per cross section D-15/C-501.
MANAGEMENT
C-501
3.6. CHECKING INLETS, OUTLETS, AND OVERFLOW SPILLWAY FOR
POND
Step 7:
Stabilize Exposed Soils with the approved seed mixtures appropriate for the perimeter area of SGW1. All areas above the
BLOCKAGE, STRUCTURAL INTEGRITY, ANDEVIDENCE OF EROSION.
permanent pool elevation should be permanently stabilized in accordance with the vegetative stabilization specifications on
INSPECTION FREQUENCY SHOULD BE AT LEAST EVERY 6 MONTHS
the approved Sediment and Stormwater Management Plan. See sheet C-501 for details.
U.S. ROUTE 113 150' ROW N/F NEEV PROPERTIES, LLC 2' WIDE SWALE GRASS SWALE OFFICE INSPECTION FREQUENCY CAN BE REDUCED TO ANNUAL FOLLOWING an scape Arc itects
THEREAFTER, OR AS THE LOCAL JURISDICTION DEEMS NECESSARY.
Plant the Submerged Gravel Wetland per sheet C-108. See wetland seed mix this sheet.
Step 8:
2 YEARS OF MONITORING THAT INDICATES THE RATE OF SEDIMENT
ACCUMULATION IS LESS THAN THE CLEANING CRITERIA LISTED
BELOW. INSPECTIONS SHOULD FOCUS ON:
TAX MAP 301, PARCEL 684
N/F NICOLE S. MOORE
(ITEM FRANKLIN AVENUE)
MAT ESTABLISHMENT ACROSS THE WETLAND SURFACE.
DEED: SRB 6511/ 290
DEED: SRB 7468/ 125 BOTTOM -1.00% 6" PVC BUILDING N/F MALLORY F. TAX MAP 301, PARCEL 737 4.1. CHECKING THE FILTER SURFACE FOR DENSE, COMPLETE, ROOT i il n ineers an lanners ur e ors
PLAT: FWH 56/ 1 DECK N/F RODNEY N/F MARGARET ECKMAN, et vir. THOROUGH REVEGETATION WITH GRASSES, FORBS, AND
ODC 42/ 452 CONCRETE WALK K. BAILEY NEWTON, et al. TAX MAP 301, SHRUBS IS NECESSARY. UNLIKE BIORETENTION, WHERE MULCH
CONCRETE WALK N/F RODNEY K. BAILEY N/F CRYSTAL LOCKWOOD TAX MAP 301, TAX MAP 301, PARCEL 738
GRASS SWALE WOOD N/F SILVESTER N/F BEATRICE COLLICK, et al. TAX MAP 301, TAX MAP 301, PARCEL 741 PARCEL 740 PARCEL 739 DEED: SVH 5806/ 317 IS COMMONLY USED, COMPLETE SURFACE COVERAGE WITH
DEED: SVH
SMITH, et ux.
SEE DETAIL D-11 & 12 RAMP TAX MAP 301, TAX MAP 301, PARCEL 743 PARCEL 742 DEED: SVH 4428/ 547 2151/ 432 DEED: 69/ 364 VEGETATION IS NEEDED.
SHEET C-501 6" PVC ~ DEED: RHO 1682/ 568 DEED: SVH 5685/ 191 PLAT: PAGE 435
PARCEL 744
INV. OUT: 22.52 PROPOSED S DEED: SRB 6041/ 237 4.2. CHECKING THE GRAVEL WETLAND SURFACE FOR STANDING
SUBMERGED WATER OR OTHER EVIDENCE OF RISER CLOGGING, SUCH AS
GRAVEL WETLANDS FUTURE COMMERCIAL DEVELOPMENT WM 8" PVC DISCOLORED OR ACCUMULATED SEDIMENTS.
PAD SITE OFFICE
BUILDING 4.3. CHECKING THE SEDIMENTATION CHAMBER OR FOREBAY FOR
ROP-II SEDIMENT ACCUMULATION, TRASH, AND DEBRIS. Atlantic Group 10044 Old Ocean City Boulevard Berlin, Maryland 21811 Ph: (410) 629-1160 Fax: (410) 629-1710 www.the-atlanticgrp.com
DEED BOOK ODC 42 PAGE 450
3+44.05 10' WIDE ACCESS EASEMENT TO 4.4. INSPECT TO BE CERTAIN THE SEDIMENTATION FOREBAY DRAINS
10' MAINTENANCE ~
3+00
SGW2 & ACCESS CYRUS WARREN LANDS, NOW WITHIN 24 TO 72 HRS.
EASEMENT BELIEVED EXTINGUISHED. SEQUENCE OF CONSTRUCTION: SGW1
D-15 4.5. CHECKING INLETS, OUTLETS, AND OVERFLOW SPILLWAY FOR & Associates, Inc.
C-501 40' ACCESS BLOCKAGE, STRUCTURAL INTEGRITY, AND EVIDENCE OF
-2.83% EASEMENT Step 1: Stabilize the Drainage Area. Dewater facility during the transition from TSB-1 to SGW1 using approved skimmering device EROSION.
or geotextile bag. Regrade to design dimensions.
Step 2: Assemble Construction Materials on-site, make sure they meet design specifications, and prepare any staging areas. Ensure 4.6. REMOVAL OF DECAYING VEGETATION, LITTER, AND DEBRIS.
2+00 PLAYGROUND 5. SEDIMENT ACCUMULATION IN THE PRETREATMENT AREAS SHOULD
that appropriate compaction and dewatering equipment is available. Locate the project benchmark and if necessary transfer
a benchmark nearer to the Submerged Gravel Wetland location for use during construction. 6. BE REMOVED AS NECESSARY.
0+00
SIGNS OF UNEVEN FLOW DISTRIBUTION WITHIN THE WETLAND MAY
Install Erosion and Sediment Controls prior to construction, including temporary de-watering devices and stormwater
Step 3:
with turf grass, native plantings, or other approved methods of soil stabilization. See sheet C-501 for details.
AND/OR UNDERDRAIN MAY NEED TO BE REMOVED, CLEANED, AND
ROP-I PROPOSED ENTRANCE DRIVE -0.25% BH-2 BH-3 APPARENT PRIVACY FENCE Step 4: diversion practices. All areas surrounding the Wet Pond that are graded or denuded during construction must be planted MEAN THAT THE GRAVEL OR UNDERDRAIN IS CLOGGED. THE GRAVEL
Clear and Strip the embankment area to the desired sub-grade.
REPLACED.
INV. OUT: 23.91
OCCUPATION
22.5' BH-1 AS ILLUSTRATED OFFICE BUILDING Step 5: Install Outfall Structure, Pipe, and riprap. 7. A DENSE STAND OF WETLAND VEGETATION SHOULD BE MAINTAINED
Step 6:
PLAT: 2412 F.595
Excavate/Grade until the appropriate elevation and desired contours are achieved for the bottom and side slopes of SGW1.
OFFICE THROUGH THE LIFE OF THE FACILITY WITH PLANTINGS REPLACED AS
SD-01 Install base stone per cross section D-14/C-501. NEEDED.
1+00
18" HDPE BUILDING Step 7: Stabilize Exposed Soils with the approved seed mixtures appropriate for the perimeter area of SGW1. All areas above the
L: 40.29' 8. INLETS AND OUTLETS TO EACH SUBMERGED GRAVEL WETLAND CELL
S: 0.16% permanent pool elevation should be permanently stabilized in accordance with the vegetative stabilization specifications on SHOULD BE FREE FROM DEBRIS TO PREVENT CLOGGING.
the approved Sediment and Stormwater Management Plan. See sheet C-501 for details.
INV. IN: 23.97 Step 8: Plant the Submerged Gravel Wetland per sheet C-108. See wetland seed mix this sheet. 9. EROSION AT INFLOW POINTS SHOULD BE REPAIRED. FLOW SPLITTERS
D=33° 08' 23" N/F PATRICK H. SCANLON SHOULD BE FUNCTIONAL TO PREVENT BYPASSING OF THE FACILITY.
R=250.00' LOT 1 P/O 686
L=144.60' TAX MAP 301, PARCEL 685
N40°00'02"W DEED: RHO 2412/ 591
C=142.59' PLAT: PG. 595
N/F PATRICK H. SCANLON
TAX MAP 301, PARCEL 685
DEED: RHO 2412/ 591
PLAT: PG. 595
WAREHOUSE
EXISTING OFFICE COMPLEX ROW VARIES FRANKLIN MACHINE WAREHOUSE WETLAND SEED MIX
SHOP
29' PERCENT OF MIX SCIENTIFIC NAME COMMON NAME WETLAND INDICATOR STATUS STORMWATER
AVENUE
RAILROAD AVENUE MANAGEMENT
29' ROW N/F HISTORIC RAILROADS, INC. PLAN
30' WIDE PERPETUAL ROW TAX MAP 301, PARCEL 683
30' ITEM No. 2 DEED: FWH 441/ 014
ITEM No. 4 60'
PLAT: WCL 85/ 027
DISTURBED PROJECT: No. DATE: 12/2/2019
CMF FORMER B & E RR ROW
60'
DRAWN BY: CDD SCALE: 1" = 50'
DISTURBED 8.13.25 PC Meeting Packet_pg. 60 of 78
CMF SHEET:
N/F ST. PAUL UMC C-107
TAX MAP 301, PARCEL 735
DEED: 26/ 87 Notes: Seed mix at rate of 20lbs/acre mixed with 10lbs/acre annual ryegrass (Lolium multiflorum) seeded as a companion to Wetland seed mix.
TYPICAL 2' WIDE
N/F DENA D.