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HomeMy WebLinkAboutBreezy Shores Community, Inc Jill M.Doherty,President O��QF SO�j Town Hall Annex Bob Ghosio,Jr.,Vice-President lQ 54375 Main Road James F.King J P.O.Box 1179 Southold,New York 11971-0959 Dave Bergen G Q John Bredemeyer Telephone(631) 765-1892 IiY10ou Fax(631) 765-6641 BOARD OF TOWN TRUSTEES TOWN OF SOUTHOLD June 30, 2011 Mr. Robert E. Herrmann En-Consultants, Inc. 1319 North Sea Road Southampton, NY 11968. . RE: BREEZY SHORES COMMUNITY, INC. 65490 ROUTE 25, GREENPORT SCTM# 53-5-12.6 Dear Mr. Herrmann: ' The Southold Town Board.-of Trustees reviewed the project plan prepared by Sag Harbor Engineering, last dated May 13, 2011, and received on June 24, 2011, and determined that the proposed installation of a drainage system of drywells to mitigate rainstorm induced flood events that affect most severely the area of the property situated generally between units "C-2" and T-7", is out of the Wetland jurisdiction under Chapter 275 of the Town Wetland Code and Chapter 111 of the Town Code. Therefore, in accordance with the current Wetlands Code (Chapter 275) and the Coastal Erosion Hazard Area (Chapter 111) no permit is required. Please be advised, however, that no construction, sedimentation, or disturbance of any kind-may take place seaward of the tidal and/or freshwater wetlands jurisdictional boundary or seaward of the coastal erosion hazard area as indicated above, or within 100' landward from the top of the bluff, without further authorization from the Southold Town Board of Trustees pursuant to Chapter 275 and/or Chapter 111 of the Town Code. It is your responsibility to ensure that all necessary precautions are taken to prevent any sedimentation or other alteration or disturbance to the ground surface or vegetation within Tidal Wetlands , jurisdiction and Coastal Erosion Hazard Area, which may result from your project. Such precautions may include maintaining adequate work area between the tidal wetland jurisdictional boundary and the coastal erosion hazard area and your projector erecting a temporary fence, barrier, or hay bale berm. This determination is not a determination from any other agency. If you have any further questions, please do not hesitate to call. Sincerely, i I M. Doherty, Pre ent Board of Trustees JMD:eac cc: Jamie Richter Jill M.Doherty,President h���OgVFFQ��.COG Town Hall,53095 Main Rd. Bob Ghosio,Jr.,Vice-President P.O. Box 1179 James F.King Southold NY 11971 Dave Bergen w Telephone(631)765-1892 John Bredemeyer � 'F Fax(631)765-6641 BOARD OF TOWN TRUSTEES TOWN OF SOUTHOLD DATE OF INSPECTION: �Ch. 275 Ch. 111 INSPECTION SCHEDULE Pre-construction, hay bale line/silt boom/silt curtain 1 st day of construction % constructed Project complete, compliance inspection. INSPECTED BY: ' �YC'L��/��y �✓ COMMENTS: o'c 1 /s/1/ CERTIFICATE OF COMPLIANCE: 1319 North Sea Road Southampton, New York 11968 631-283-6360 Fax:Ax. EN-CONSULTANTS, INC. www.enconsultants.com 3-6136 ENVIRONMENTAL CONSULTING � C VE } U 2 4 2011 June 22, 2011 !� Jill Doherty, Chairwoman Board of Trustees Southhold Town Town of Southold Board of Trustees P.O. Box 1179 Southold,NY 11971 Re: Breezy Shores Community,Inc., 65490 Route 25, Greenvort, SCTM No. 1000-53-5-12.6 Dear Mrs. Doherty: We represent Breezy Shores Community, Inc., who wishes to install a drainage system of drywells to mitigate rainstorm induced flood events that affect most severely the area of the property situated generally between units "C-2" and "C-7." As this area is located between tidal wetlands associated with Shelter Island Sound (to the west and south) and freshwater wetlands to the north, whose boundary was delineated by the New York State Department of Environmental Conservation on 6 December 2010, the proposed project area has been carefully designed to remain more than 100 feet from both wetlands boundaries, all as depicted on the site plan prepared by Sag Harbor Engineering, dated May 13, 2011. A copy of this plan is enclosed along with a current land survey of the property and agent authorization letter. As depicted on the plan, a project-limiting fence and staked haybales would be emplaced a minimum of 100 feet from all wetlands setbacks prior to construction to ensure that all construction activities would in fact remain more than 100 feet from all wetlands. As all proposed work and related construction activities will therefore occur beyond the jurisdiction of the Board of Trustees pursuant to §275-3(C)(5) of the Southold Town Code, would you kindly prepare a non- jurisdiction letter for the project. Although no Building Permit or other Town approvals are required for this project, I have discussed it with Jamie Richter and will be providing him with a copy of the proposed site plan for his information. Should you have any questions or require any additional information to process this request,please do not hesitate to contact me at your earliest convenience. Respectfully yours, Robert E. Herrmann Coastal Management Specialist Enclosures 1319 North Sea Road Southampton, New York 11968 3-6136 A 631-283-6360 N-CONSULTA TSg I C Fax:www.enconsultants.com ® www.enconsultants.com ENVIRONMENTAL CONSULTANTS E C JUN 2 4 2071 Boa°dhhold Town Of Trustees TO WHOM IT MAY CONCERN: This letter will authorize En-Consultants, Inc. to represent me and act on my behalf with regard to environmental matters and/or permits. Signature Print / /+ Signature Print Dated: SAG HARBOR ENGINEERING Frederick S. Keith, PE 381 Town Line Road, PO Box 1991,Sag Harbor,NY 11963 Telephone and Fax 631-725-0868 Cell 631-278-3166 E.Mail r kpisiWaF... .._m Specializing in Residential Structural Design 117 To: Jamie Richter, Town Engineer Town of Southold,NY 1 ,l 2011 I PROPOSED DRAINAGE PROJECT ' JUN Soutlr;iotd BREEZY SHORES COMMUNITY Board of r, Own es June 15,2011 Attached is a 1 inch equals 60 feet partial plan of the Breezy Shores Community showing the proposed project to install dry wells to mitigate frequent local flooding. The bold line outlines a nominal drainage area within which storm water will drain to three clusters of 3 10 foot diameter, 3 feet deep dry wells. The volume of storm water storage in these units is as follows: 9 dry wells x 3 feet x 68.4 cubic feet per foot= 1847 cubic feet The area within the outlined nominal service area equals 91,400 square feet To fully comply with the Town of Southold Section 161-28 requirements for storm drainage, the dry well storage for this area would be as follows: 91,400 sq. ft. x 0.3 runoff coefficient x 0.167 ft. of rainfall (2 inches) =4579 cu. ft. Therefore,the nine proposed dry wells will accommodate:., 1847 cu. ft. divided by 4579 cu. ft. =40.3%of the volume required by the Town which equals a rainfall volume within the nominal area equal to .403 x 2 inches=0.806 inches. Note: The proposed dry wells will not store and hold the volume of a two inch rainfall. However, by providing a vertical drainage path beneath each of the three dry well clusters the project will allow more rapid release of the stored water to the groundwater than would otherwise occur through nine feet of the existing impervious subsoils. This will shorten the duration of flooding which results from storm runoff in excess of the storage volume. Frederick S. Keith, P.E. Investigations-Reports-Design-Construction-Dispute Resolution OT elo yew-- \ / � mob• � Silt barrier(see detail) 6?7\ _ Grade'lo direct storm Z,fc Grade to direct storm 5� to to•inlet 4� water to inlet � i 4 4 414 � �B d to to direct storm 9 �� ^:93 _ to inlet * Tf/ Silt barrier(s4e d ail)'- —— .�, /�Dry well cluster• J 493 '�-1 p �yp goo � 42 V / 1 e : pO� Cz— / v n. 19TORY u Silt barrier(see detail) SOLPSE SO 4.12 I Fly- ROCK SEA41ALL o� N&400Q'04")„l moo. 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SOUND IsLfiND SNELtER a . e COUNTY OF SUFFOLK CC) c tons SOUTHOLD SECTION NO _ —_ -- NOTICE Izn — ,—_ m —_ -- "` s Y w1 WKF,LL @.n wE W Cp Real Property Tax Service Agency 057 E d, —�— 6ues. . O —_ as,aau,v!a un wn,ox o<nc > F Canty Center. FUZheae,N T 11901 O O e.•nm. _---- a -- -- — ou town m urr a vrmmlm v r w rtE,A ,.r�o,• 6beoa m,.s r .� .,m.., row w m«w u. . e..ram.a+o. n, •� rrn. ro E r. o•mo. —_-- eerw,..,•. __.—_ .�o.*..u. .,w �w :�wwn.w„wrcemso+m,�c ° .� n . A osaab 1000 x.�rye. ��-•=^ ,rsr w.•o� _ urnrrtn P PROPERTY MPP' 6'. �..ay.ue.Hs.�.r:,rra`anw�uruau,.».ey....:ur, .,� .:..+a- _' _ '? 4 L ,..j.-✓..... A UN UTHORIZF➢ALTERATION ITI T liil Y INSTITUTION HEREON.AN T THE I I INSTITUTION. l1FICATI NS AR`NOT TRAM IT INSTITUTIONS R 85 T NN W() OR ADDITION 0 S SURVEY IS A MOUTON OF SECTION 7209 OF THE NEW PORK STALE EDUCATION LAW.(2)DISTANCES SHOWN HEREON FROM PROPERTY LINES TO EXISTING STRUCTURES ARE FOR A SPEGFlG PURPOSE AND ARE NOT TO BE USED 70 ESTABLISH PROPERTY LINES OR FOR ERECTION Of FENCES.(3)COPIES OF THIS SURVEY MAP NOT BEARING THE LAND SURVEYOR'S INKED SEAL OR EMBOSSED SEAL SHALL NOT BE CONSIDERED TO BE A VAUO TRUE COPY.(4)CERTIFICATION INDICATED HEREON SHALL RUN ONLY lb THE PERSON FOR WHOM THE SURVEY IS PREPARED AND ON HIS BEHALF TO THE TITLE COMPANY,GOVERNMENTAL AGENCY AND LENDING I SRN ON LISTED E EON. D 0 E ASSIGNEES OF THE LENDINGCERTIFICATIONS c SFERABLE TO ADDITIONAL0 SU EOVEN 0 ERS. (5)THE LOCATION OF WELLS(),SEPTIC TANKS(ST)@CESSPOOLS(OP)SHOWN HEREON ARE FROM FIELD OBSERVATIONS AND OR DATA OBTAINED FROM OTHERS 400 Ostrander Avenue, Riverhead, New York I1a01 tel. 631.727.2303 fax. 631.•127.0144 admin@youngeng ineering.Gom Howard W. Young, Land Surveyor Thomas C. Wolpert, Professional Engineer Douglas E. Adams, Professional Engineer Robert C. Tast, Architect 51 TE DATA WIf TOTAL AREA = 82.6363 ACRE5 PENI N5ULA = 1.5661 ACRES DUG BA51 N = 11.5415 AGRE5 0 VERTICAL DATUM = N.G.Y. DATUM (M.5.L. 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V�I � � �� / 1 S ,\\�, in►n � 576°46'2 /,'_.: �sv,m f, @ o / /Yb 4 \p �plpj6 �j3k,yJ N7g S6 W / 1 D� -N i e� ,/ 0 I,wTCRMP c�'10 z / J, �'�ra• N / ry P RK o n0 4 ;: �+ z of s ,t 9 g ` \3\�0$3 TNEER NMP O-4D, T 458g3 ``;c�>ti..`'t ,. �%c✓ ' �d 9 ( HOWARD W. YOUNG, N.Y.S. L.S. NO.02.0 _p) .�" N6/°2j O \\\ \� z I 66'43�6„ \\ 574°10'5q' N� �0�2 PLONK 72.31' \•2p g46� TIELINE ?37-�0, ��NSU 6 98\ SURVEY FOR PPQROX. yIpTER N6g°0`�Op W 141, 2' 112.00 511E o.�l��lx � EEZY S Oi�'ES GOMMU�11 TY .' .' N73°51'08"yy 167.77',/ ,/ N7104 78.38' e � ��\ at Orconport, Toyvn of Southold /' /' N77 030g"w 6o�26„W Suffolk Count , New York y 0 TOP06RAPH I GALL SURVEY OIIllSLA County Tax Map District 1000 Section 55 Block 05 Lot 12.6 a SDl�A� 0 0 a MAP PREPARED DEC. 50, 2010 Record of Revisions REVI51ON5 DATE GENERAL AMENDMENT5 JAN. 25. 2011 N N O J C 0 100 O 50 100 200 500 m Scale: I" = 100' JOB NO. 2010-0205 DWG. 2010-0203-topo I OF 2 a E = MONUMENT SET ■= MONUMENT FOUND = STAKE SET A= STAKE FOUND F WHOM THE Y 15 PREPARED AND ON HIS BEHALF TO THE TITLE COMPANY GOVERNMENTAL AGENCY AND LENDING INSTITUTION LISTED HEREON.AND TO THE ASSIGNEES OF THE LENDING INSTITUTION.CERTIFICATIONS ARE NOT TRANSFERABLE TO ADDITIONAL INSTITUTIONS OR SUBSEQUENT OWNERS 5 )HE LOCATION OF WELLS W,SEPTIC TANKS 5T h CESSPOOLS CP SHOWN HEREON ARE FROM FIELD OBSERVATIONS AND OR DATA OBTAINED FROM R (I)UNAUTHORIZED ALTERATION OR ADDITION TO TIilS SURVEY IS A VIOLATION OF SECTION 7209 OF THE NEW YORK STATE EDUCATION LAW.(2)DISTANCES SHOWN HEREON FROM PROPERTY ONES TO EXISTING STRUCTURES ARE FOR A SPECIFIC PURPOSE AND ARE NOT TO BE USED TO ESTABLISH PROPERTY ONES OR FOR ERECTION OF FENCES.(3)COPIES OF THIS SURVEY MAP NOT BEARING THE LAND SURVEYOR'S INKED SEAL OR EMBOSSED SEAL SMALL NOT BE CONSIDERED TO BE A VALID TRUE COPY.(4)CERTIFICATION INDICATED HEREON SHALL RUN ONLY TO THE PERSONFOR 0 E SURVEY () () ( ) ( ) OBT ED ON OTHERS 400 Ostrander Avenue, Riverhead, New York IIQOI tel. 63I.-72'1.2303 fax. 631-12-7.0144 \ / X q o / �_ ;` \ / / • / \ admin@youngengineering.com Howard W. Young, Land Surveyor Thomas G. Wolpert, Professional Engineer \ 4 0// Douglas E. Adams, Profes5ional Engineer / \ Robert G. Tast, Architect 51TE DATA \ Y 77' \ / TOTAL ARi=P. = 82.6363 ,4GRE5 l 9/p • \ ___- � �� � � •� - / ,�, PENINSULA = 1.5661 ACRES I E DUG BASIN = 11.5415 AGRE5 8 8'82 •� � 1\ � ' R�SIrA I V1 4 �T7= VERTICAL DATUM = N.G.V. DATUM (M.S.L. IQ2ci) C LEGEND CONCRETE COVER OO = WATER METER VALVE \ `Z` O I Ve �j•� O / _ HYDRANT FIX = FIXED DOCK FLO = FLOATING DOCK W5 = WOOD 5TORA6E GE = CELLAR ENTRY IN - = ROOF OVER / \ 05 - OUTDOOR 5HOWER\ I C-25 - FRAME COTTAGE 4: NUMBER 5.01 - (5URVEY) ELEVATION X 6.5 = (RECORD) ELEVATION WETLANDS FLAG B NUMBER I11M. , � — Ile ♦ \ \ \ V�o 0 II \ 90 >Y� Vi \ \ \ 1 ° IX FIX \ o� 6 ?�. ` , _ X -1.0 � F I ° 2 s 4 \ Aj �• \ Y 5 ��G�L�L�ND \ � X -�.o � yeTL Y 4 6��\ �O Lyy15 Oe /10 l i �LIN��`T�D NG• � s� $•8s �Y• _ I I �SuLT�`�TSI /1O I �N-G0 O�A 10/2 I DLO \ d �•a IPA' A / IINFW - \ USA I I 4.72 U mo LI�� N N rp 3"O' �� d u) Yn 001. 1 v D: Lr) !qe* /3.7'/ 5- .4 J/4.3r /0.3' I � Aftft/ \ l'VOpD �lJLK 0 0 u.l' ` n •�T' O - - /4 / m 1.2.a, _ �, .� "� ( � © �•Oq S ( 26 X OS IT;/.z.-7'v �8/ 6.0` � ' Q?k/� 8.52 Oro �_ o I4' " �4•// /4'6 / 4 S/�r� CO Awl", r, S Z1.7 ?4./ 9�, `* Q0 �" ," `*U� n �cS \ \ �O /' /4,5/ , © 6'2 ClQ LD 26 /0 3 30.6' ® \ 6 n le � 1 ui o I •9g " _ COIry /3.5, 9 0 O 4()� 4.6, n, (f� s .il / 7'$O C5 165 \� 1 .. / ,° m S 49' ? 73/ " w (f) \ z co /�• , o � o " � SURVEYORS CERTIFICATION a ( , U b �9 10 ? 0o \ N VFW ram . p CO o v, .3, "' C CDs 6 ro v 3 / Nl N 78- o L/�/-/�d 7� \ V EY +/� U 2p.8'm $(Ql_ � \ to ti•`' C"?' ' ti 1 3 t o � � �8S / 4 9 /�� ••` \ HOWARD W. YOUNG, N.Y.S. L.S. NO. 458,515 4•q2 5URV EY FOR 4 •8 5REE MMUN 1 T1'ZY S�IOfi�ES GO at Groonport, Town of Southold 5uffo Ik County, New York CO 0 TOP06RAPH I GALL 5URVEY M County Tax Map District 1000 Section 55 Block 05 Lot 12.6 Q 0 CD MAP PREPARED DEC. 30, 2010 a Record of Revisions REV1510N5 DATE GENERAL AMENDMENT5 AN. 25, 2011 0 J 0 40 O 20 40 50 120 0 Scale: 1" = 40' JOB NO. 2010-0205 a DWG. 2010_0203_topo 2- OF 2 0 = MONUMENT 5ET ®= MONUMENT FOUND 0= 5TAKE 5ET A= 5TAKE FOUND 9 4 i — �•' Y" .� , J O67 ro 1\� �`-� ca a i r e5 5? \ k.1 Silt barrier(see detail) ``- 0 a Q) yv \ `�.,�J\`` �.� �-, .-f'%� Grade'to direct storm W Grade to direct storm, t \ bA water to inlet 4.50 water to inlet 44 6.40 rs � 5er 4', p, 626 by7 7' TEST HOLE LOG """ r a o tS 82 Grade to direct storm r,w- .. sr *� �, •r \�\� r+-�pi� 11 \ water to inlet , �'� '` � --• -- _ O 0 -1 Dark brown clayey loam (OL) "C Silt barrier(s�e detail)' �-- --�• --- -~ "Dr well cluster ' `�• '~ "`-•,.,..... -'.�. Q�t 1'-3' Brown clay(CL) pa- O .�\4 \NG o- f (typical) -- ----�@ --- - -- ------------tea-" "'�.'-- 3'-3'6" Brown clayey sand with � ( • �; 10/o gravel (SC) �', ,, �4 72 O -= �.. .. 3'6"-12' Water in brown clayey L / �� ✓ ! © '� �' e>r sand with 5%to 10'%,gravel (SC) 00 ° ,+'y v l �Tolz='t' — Silt barrier see detail � '0 ` ( ) 12'-23' Water in pale brown fine to y Medium sand (SP) K HOUSE ,a ° ` ,, P ,i �. Comments Water encountered 3'6"-below surface 412 won . oo 4.a6 •4�2 0 teoGK ��w�L.A. , Test hole by McDonald Geoscience, 4/10/08 ' Q 4� � ! }p CA' fit. r ., N6 4°OC'CJ4"N O � C� 1- ��'� � All disturbed areas shall receive do1 \ - �hF� p,1. F-1_7 p P '�- FLOW �' two inches of to soil, starter fertilizer, 0 YX grass seed and straw mulch �`'--- •\ r �j`� ` „�� "���72TA �• '�.- v --1" VERTICAL FACE ,� - i i ✓ � A f 8EQD2NG OCTASL L� LANDSOUND ' \ ANGLE FIRST STAKE TOWARD 01 r, Y s \ 0 -�"r PREVIOUSLY LAID BALE PLAN .: F LOW Scale P=50 ` r ►w+ _ v►vw . BOUND'SALES PLACED ON CONTOUR 2 RE-BARS, STEEL PICKETS NOTES OR .2'x2' STAKES 1 1/2' TO 2' IN GROUND, DRIVE STAKES The Breezy Shores Commumity occupies a low lying bay side peninsula of bong Island's ANCHORING D E T a S 4 f LUSH WITH BALES. I North Fork. One group off cottages,from unit C-2 to unit C7,occupy a stretch of bulk NOT TO SCALE I headed waterfront having;ground surface elevations less than 6 feet above mean sea level. A Rain events of more than 11 to 2 inches result in surface flooding,-limiting the use of these properties until the standing water drains away or evaporates. This condition is Ca► • 6ca►si.-�, C.t r�r++�e Details - Silt Barrier. aggravated by the impervious nature of the clayey subsoil which prevents surface water from draining to the groundwater table. _ etr 4,$,/b Sp l �•-- �Ir11/�A�'54�l� �'c�rrcrfrR ZG�B •� srsi The proposed project consists of three clusters,each having'three 10 foot diameter,3 foot pr{�reann4 ,o /;�l"��"'�''� ~'` eC' Ilze deep dry wells interconnecoted with 6 inch pipes. They are three feet deep because that is a� swr-fgce M iaffre '�'o the depth available above lground water for the storage of runoff. Equally important to ofh�►�9hf the function in relieving pirolonged periods of flooding are the replacement of existing /qef Ahab impervious soils with coluimns of rapid draining granular soil which penetrate the 12 foot P P g g P thick layer of clay material and connect with natural sand strata identified at elevation 4\minus 7. The project has been identified as one to mitigate not prevent flooding. These dry wells will not have sufficient storage to avoid short term surface flooding during higher levels BREEZY SHORES COMMUNITY of rainfall,such as those abbove 2 inches,but the improvements sho'lIA allow drainage to ,�� fp'a<cr.»e%r' �rer7�4,,n07 Sernq" d+ a' `h Town of Southold,New York take place so that the flooding occasions are much shorter in duration. To better direct surface water to the inlet grates at each dry well cluster,very limited �prdf SQ'"d rea�ac� tx�s/ing Sor/ ¢,, " PROPOSED DRY WELLS AND VERTICAL DRAINS grading is generally shown on the plan. In every case the depth of this disturbance s�'�'�' w� Coarser ,4a rrrea'rur» '� /d r I TO MITIGATE FREQUENT FLOODING should be less than 6 inches. 4sc��d In accordance with currentt environmental practices,a silt barrier of straw bales will be established generally enerally following the 100 foot setback line from surface Waters,and tidal or _ .�'�S� � SAG HARBOR ENGINEERING g Section A-A �J o�as �'��� PO Box-1991, Sag Harbor,NY freshwater wetlands. Q� ,. rl `^ May 13,2011 Section--Dry Well CylinderCo , _ Plan Typical Drywell Cluster 't ; -19959 h�$TAIt Plan is based on a property survey prepared.by Young and Young,Riverhead,NY dated January 25,2011 Vertical Datum is NGVD (MSL 1929) -9� '•.� 'gyp \ � •.. � �� ��'Q won I ..ry� /' `y; y} 7�� ti. 1 .r.. r• '•✓• /rrJ/ ` \ bar.. i, I +, q F �1 ""r�[� �r pQ `?O — `a\��•, 0 j` `�..t tt.}' 7 � ��` V� ,••�y Qj� �"�` �-----1-_.__-£n'•rt" Of?r11 t(?t?S R_ 1 \ ..� •' � O ��; � �� �� Silt barrier(see-detail) -- � �\,' r ,,$, s. ~-- s sue\ .�.•� --Grade'to direct storm* Grade to direct storm`` ` „� 7 .�4 . ,,, ►,' ••� water to inlet .5U water to inlet 144 6 4 .4 gg '�d••2a 6.2(� ��� 7'� TEST HOLE LOG �• � ��' r5` � `\ �� � �.8�� Grade to direct storm �'"� `' ® ----- "' �' '~- � � + , �.. ~��a �, \�\� j� t -•.......... . .....--. water to inlet + �,.,`�• 1 -- ._..., © O 0 -1 Dark brown clayey loam (OL) Silt barrier(s a detail)' ---- / ••- --- P'"-- ✓ 1rtA,t, - 4.93 '•' -..,,,, -- —' \ 1'-3' Brown clay (CL) �y Dry well'cluster r 6?+iZA Q cS 1 ..- --•=---�---. 1 (typical) Q --•�-*....._.. ,� U \ �Z�+�t1%0 �r' �� b.�l .�, .�- -�-- -. ., ,� �,,,„., ...�,r^ @ •�s--------�----- -- �e 3 -3 6 Brown clayey sand with �� tS; .__. .---- ---." .\,. `83' ia C� '....." 10% gravel (SC) 7-19 .5 V Y691-127 Water in'brown clayey 0 © sand with 5%to 10% gravel (SC) VA • E)l0° f� Medium sand (SP Silt barrier(see detail) 1 \ o�'J ny ,a` \ 12'-23' A fine to ++Our , ° 4 4.712 Comments Water encountered 3'6"-below surface Ap �F,4b Test hole by McDonald Geoscience, 4/10/08 1 11 �&\A All disturbed areas shall receive �, y� '�O�- two inches of topsoil, starter fertilizer, '°; - grass seed and straw mulch w FLOW I) �_FACEERTICAL .111 IS0MTAXL. � ` ` 0 � ,P0 ANGLE FIRST STAKE TOWARD 01 ++!' } ��• ��� PREYIDUSLY LAID BALE ° -r PLAN ; FLOW _ Scale 1"=50 �.� BOUNl0'BALES PLACED ON CONTOUR _ = 2 RE-BARS, STEEL PICKETS NOTES OR .2448 STAKES 1 1/2' TO 2' ANCHORING oe:TAIL, IN GRROITD. DRIVE ES.STAKES The Breezy Shores Commiunity occupies a low lying bay side peninsula of Bong Island's North Fork. One group of'cottages,from unit C-2 to unit C7,occupy a stretch of bulk NOT TO SCALE f I headed waterfront having ground surface elevations less than 6 feet above mean sea level. A Ravin events of more than I to 2 inches result in surface flooding,-limiting the use of these - properties until the standing water drains away or evaporates. This condition is Cal` 6ws�.-� Ct'rCza.+sa Details — Silt Barrier aggravated by the impervious nature of the clayey subsoil which prevents surface water crrs d 1 � , 74IR&M, ��rr�/` U1�SCP� - •�/t�racafri<'-ZGL,B r �s�roi from draining to the groundwater table. The proposed project consists of three clusters,each havin `three 10 foot diameter,3 foot �w r lac�rrnerri� "'- 74 /11. "-r P P P j g �i"cann�� � � deep dry wells interconnected with 6 inch pipes. They are three feet deep because that is ,! ,g-Uj-fgce � the depth available above ground water for the storage of runoff. Equally important to Ll of ��� hp�ghf (II "� — p /c7y Arlq� _ c the function in relieving prolonged periods of flooding are the replacement of existing w�./I �" j'Pe' impervious soils with coluimns of rapid draining granular soil which penetrate the 12 foot t crciy�c� •sand d• ,, P P g g P thick layer of clay materiall and connect with natural sand strata identified at elevation SI minus 7. The project has been identiified as one to mitigate not prevent floodin :!'These dry wells . _ `�. ` �' /��� O will not have sufficient storage to avoid short term surface flooding during higher levels BREEZY SHORES COMMUNITY of rainfall,such as those above 2 inches,but the improvements should allow drainage to ,-'� � �, � ��u'n�•� .Senc�?� 'q' Town of Southold,New York take place so that the flooding occasions are much shorter in duration. w�nddw i�� • ? To better direct surface water to the inlet grates at each dry well cluster,very limited r717Y " 5c�rra� �ew�q�CC �x�s'fing Sol/ �. a s�f� ��� GoOrsG � rrrco'�ar� PROPOSED DRY WELLS AND VERTICAL DRAINS grading is generally shown on the plan. In every case the depth of this disturbance �" ��u TO MITIGATE FREQUENT FLOODING should be less than 6 inches. 4 In accordance with current environmental practices,a silt barrier of straw bales will be ' SAG HARBOR ENGINEERING established generally following the 100 foot setback line from surface waters,and tidal or ectiOnl A-A PO Box-1 991, Sag Harbor,NY freshwater wetlands. _ �S�ptt�FESl/ a���F May 13, 2011 Section—Dry Well Cylinder o�RIC K s Plan Typical Drywell Cluster �4 �4.41 N a., Der\ 39559 icy,• Plan is based on a property survey prepared by STA111L Young and Young, Riverhead,NY dated January 25, 2011 Vertical Datum is NGVD(M:SL 1929)