HomeMy WebLinkAboutDredge plan 9.11.2025ae
SURVEY NOTES:
RECORD RECORDED IN THE BARNSTABLE COUNTY
REGISTRY OF DEEDS.
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APPLICANTS:MHW MEAN HIGH WATER
FRIENDS OF KNOBB HILL SHORES easy|a MEAN LOW WATER
4NOASSESSORSMAPORPARCEL
|NO DEED REFERENCE MEAN LOW WATER (7
|
i PROPERTY LINES DEPICTED HEREON ARE BASED ON ——2—__ELEVATION CONTOUR
\A FIELD SURVEY BY DOWN CAPE ENGINEERING IN
DECEMBER OF 2023 AND COMPILED FROM PLANS ON PROPERTY LINE
.
Mm meme CODREDGE AREA
WORK AREA APPEARS TO LIE WITHIN FLOOD ZONE AE Ht
(EL.9’NAVD 88)PER FIRM PANEL #583J OF 875,Knob |_Hi CO)
COMMUNITY MAP NUMBER 25001C0583J EFFECTIVE
DATE JULY 16,2014 AS SHOWN ON THE FEMA
ON-LINE DATA BASE.g
DATUM FOR ALL ELEVATIONS =NAVD 88
MEAN HIGH WATER =1.9’NAVD 88
MEAN LOW WATER =—0.3’NAVD 88
AND IS THEREFORE NOT SUBJET TO MESA REVEW LOCUS MAP
SCALE 1”=2000'+
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<ee a 95)CHANNEL fag 7Seaan—_7-s$-—=22 A
—?|4 PROPOSED DREDGE AREA/CHANNEL ——o DREDist.AREA =6,3242 SF.
DREDGE DEPTH =—2.9’NAVD88 (—2.6 MLW)
\DREDGE VOLUME =99+CU.YDS,po
10.0.00 \|x A
0.Pence eee eee e cab pe eee re qi ARNEL EEE tet SE EERE nee eee e nee e este eee eens neue reese eee eee mms nH ysreg gee eee eee eer eneeneenes .0O0 CONSTRUCTION NOTES:
]!—2.9"NAVD 88 (—2.6'M re ELEVATIONS REFER TO NAVD88.CONTACT SHOREFRONT CONSULTING FOR ADDITIONAL ELEVATION INFORMATION AS
NEEDED.
~10.10.00 2.SCOPE OF WORK CONSISTS OF DREDGING AN EXISTING NAVIGATION CHANNEL INTO AND OUT OF DINAH’S POND.NO PART OF THIS DRAWING MAY BE USED BY
0+00.00 1+00.00 1+50.00 APPROXIMATELY 99+CUBIC YARDS OF MATERIAL SHALL BE DREDGED FROM THE CHANNEL IN THE LOCATIONS SHOWN.ANY PARTY WITHOUT THE EXPRESS WRITTEN
-DREDGE SPOILS SHALL BE OFFLOADED AT AN APPROVED LOCATION AND TRANSPORTED TO AN APPROVED DISPOSAL CONSENT OF SHOREFRONT CONSULTING ANDAREAUNDERCURVE=8 SQ.FT.
LENGTH OF DREDGE AREA B =127 FT.2 ae ee a een eee DOWN CAPE ENGINEERING,INC.
VOLUME OF DREDGE AREA B =384 CU.YDS.3.CONSTRUCTION ACCESS SHALL BE FROM A WORKING BARGE.EQUIPMENT SHALL BE STORED ON THE WORKING BARGE
DREDGE DEPTH =—2.9’NAVD88 (—2.6’MLW)WHEN NOT IN USE.WORKING BARGE TO BE ANCHORED TO AVOID BOTTOMING OUT DURING PERIODS OF LOW TIDE.
-0 0 4.THE WORK ACTIVITY SHALL OCCUPY A MINIMUM AREA TO ACCOMPLISH neoeegee ie LIMIT OF WORK IS WITHIN
_THE DREDGE AREA ONLY,AND SHALL NOT EXTEND WEST BEYOND THE ENTRANCE CHANNEL.EQUIPMENT ANDSECTIONA-A ELEVATION DE TAIL (EX!STING AND PROP OSED)ae MATERIALS HANDLING SHALL BE IN ACCORDANCE WITH THE WORK PROTOCOL SUBMITTED WITH THE NOTICE OF INTENT,
THE RESULTING ORDER OF CONDITIONS AND AS DIRECTED BY THE YARMOUTH CONSERVATION AUTHORITIES.
5.ALL WORK SHALL BE ACCOMPLISHED FROM THE WORKING BARGE.AT NO TIME SHALL THE WORKING BARGE COME IN
CONTACT WITH THE BOTTOM.
—=-SALT i 25’FROM SALT MARSH oe 6.ALL AREAS DISTURBED DURING CONSTRUCTION SHALL BE RETURNED TO THEIR PRE—CONSTRUCTION CONDITION.ALL=T WORK SHALL BE INSPECTED BY SHOREFRONT CONSULTING AND RECEIVE APPROVAL BEFORE REMOVING EQUIPMENT0.00 FROM THE SITE.
25’FROM SALT MARSH S
7.THE ACCESS POINT FOR THE WORKING BARGE SHALL BE CLEANED AND RESTORED TO RESEMBLE THE
PRE—CONSTRUCTION CONDITIONS.
0 25 CHANNEL =.00 8.THE CONTRACTOR SHALL OBTAIN A COPY OF THE ORDER OF CONDITIONS ISSUED FOR THE PROJECT BY THEeeeeeeeeeeeeeeeeeeaeeeeeeeeeeeeeeeeeeneeeeeeeeSeeeeeee.YARMOUTH CONSERVATION COMMISSION PRIOR TO THE START OF ANY WORK.
—2.9’NAVD 88 (—2.6’M 9.A SILT CURTAIN SHALL BE USED DURING ALL DREDGING OPERATIONS TO ENCIRCLE THE AREA BEING DREDGED.THE
SILT CURTAIN SHALL BE RE—ADJUSTED AS THE DREDGING PROCEEDS ALONG THE CHANNEL.
caine 10.ALL SHELLFISH WITHIN THE DREDGE FOOTPRINT SHALL BE RELOCATED TO OUTSIDE OF THE DREDGING FOOTPRINT APEENGINEERING
auhee PRIOR TO ANY DREDGING OR AS DIRECTED FROM THE YARMOUTH NATURAL RESOURCES DEPARTMENT.Pbone Wa oce7=—10.
0+00.00 AREA UNDER CURVE =12.9 SQ.FT.1+
LENGTH OF DREDGE AREA B =127 FT.
VOLUME OF DREDGE AREA B =61+CU.YDS.
11.DREDGING SHALL START NO CLOSER THAN 28 FEET FROM THE SALT MARSH.PERFORM A VERTICAL CUT DOWN TO
DREDGE DEPTH =—2.9°NAVD88 (—2.6’MLW)
ELEVATION —2.9’NAVD88,ALLOWING THE SIDE SLOPES TO SLOUGH IN NATURALLY.DREDGING SHALL CONTINUE UNTIL
THE CUT “DAYLIGHTS”IN THE WATERWAY AT ELEVATION —2.9’(NAVD88)OR —2.6’MLW DATUM.ONT CONSULTING
12.UP TO 99 CUBIC YARDS OF MATERIAL CAN BE DREDGED AND REMOVED.SUBSEQUENT MAINTENANCE DREDGING CAN nae ea itesSECTIONB-B ELEVATION DETAIL (EXISTING AND PROPOSED)es alge BE PERFORMED AS LONG AS THE TOTAL DREDGE VOLUME DOES NOT EXCEED 99 CUBIC YARDS.:eaeegue
1°=10"DCE #23-275 Lo WWW.SHOREFRONTCONSULTING.COM