HomeMy WebLinkAboutGoldsmith Inlet Studies
SCOTT A. RUSSELL Town Hall, 53095 Route 25
SUPERVISOR P.O. Box 1179
t Southold, New fork 12971-0959
ty,. Fax (631) 765-J.823
Telephone (631) 765-1889
Ie' o_~
OFFICE OF SUPERVISOR
THE TOWN OF SOUTHOLD
March 10, 2014
Mr. Lric Rothstein
cDesinn Dynamics. LLC
338 Ny7cst 391` Street, 10"' Floor
New York, NY 10018
Be: 'fown of Southold Professional Services Contract BathOr elric. Study, Sediment Modeling and
Sediment 11,tnagement Plan in aecordanec with the Management Plan h)rGoldsmith's Inlet dated
June 19.2012
Dear Mr. Rothstein,
`I'he'Iown Board has determined that the several tasks outlined in the professional services contract
between the Town of Southotd and your firm, have not been fully completed. The incomplete tasks are
noted below as they relate to the FIN.AI, R13PORd : RECOMMPNDA't IONS AND AC'T'ION I'LA''vrS
GOLDSMI III INLET' SAND ACCRETION AND WR'I'ER QUALI'TY STUDY. I have also included
comments tcceived by the following:
1, Chris Lubicich, principal public Health F_ngiacei ofthe Suffolk G"aunty Department off lealth
provided comments via email dated January 2, 2014 that are included as Appendix A.
2. Jamie Richter, I own of Southold Office of the Engincer Con+nienls were sent to your firm
on December 2, 2013, however, there are additional engineering commeths that still need to
be addressed. 'I'bey are inemded as Appendix B.
Proposed solutions to complete each task are provided to facilitate a quick product. Lastly, please add
page numbers to the report.
`x II7tt l'elb
. 41 Rusw I
Supervisor
cc; Members ofthe Town Board
Martin Finneran, TFown Attorney
Mark'ferry, Principal Planner
Jamie Richter, Engineering Inspector
Comments on FINAL RFPOR"I': RFCO1.IIe1FNDATI{INS AND ACTION PLANS
GOLDSMI Fli INLET SAND ACCRFTION AND WATER QUALITY STUDY.
1. Grant Task 4: Bathycnetry and Sediment Monitoring
Consultant will per forrrt a series of hathynteo is studies of the Inlet channel, identtfvin,
l2 fixed channel sections to he ine(Fured and recorded et our separate times between
.Scaring and,all 2012. 1 hose measurements o ill describe the actual changes their take
place uith7n the chutarzeF, corresponding a-ith secrsonat and cdimutic changes. Consultant
plans to take one set of measurements ornnv diately after a high a nergv storm event to
document the short-term changes in the channel that result. These (Iota still be
sunthesi_ed to provide an understanding nt"the processes and events that lead to
geometric changes to the channel under current conditions.
This task is complete. 'I he Bathymcttic Study and Sediment Ilonhoring Report was
delivered on Jrtne 4. 2013.
Grant'Fask 5: Sediment Management Plan
Ilie work its this 7ask involves identification of the likely extent of sediment contributions
fisnn marine sours es.
This task is incomplete. 'The final report discusses climatic events as being the source of
sedimentation but does not discuss the link to inlet configuration and control features in
detail.
Solution: Reorganize the Sources of Sedimentation (Pages 17 and 18) section into sub-
headings that shell out further in the task the influences of tides; stotrms.. wind, jetties;
dredging, beachside construction, beach restoration, etc. Further elaboration on the
influences and how to mitigate these influences should also be included.
3. Grant Task 5: Sediment Management Plan (continued)
lids effort wul be paired with the work pcrlormed bt, Cornell in Grant lls k l and the
Tidal Prism/Fhyslong Rate Analysis. Cornell will be placing >vater level lo,gers in LIS
and rvithin the Inlet to perferm a volumetric unalYsis of marine outer contributions to the
flushing o/ the Inlet as then varv with tide, season and climatic events, l'or the entire
period of observation (and relevant su1petiods like daily tidal e cles during neap onies,
aSn7v tidal cycles during Storm- tales, ec Consultant ,tilt correlate nertoas of net
marine sediment ioadiqg,--~vith marow lushing. Consultant e4 fl determine the net
nuo'ement ofsedirrnent into and out of the Inlet vis-a-vis the totes at tfte nrtouth Of the Intel,
and id n46) Inch net .secanivnt l{ adN 112th ch'Asatic t soiet and tidal conditions,
This task is incomplete -The correlation Of periods of marine sediment loading with
marine flushing was not adequately discussed,
Proposed solution: The report references flushing rate and flushing volume however,
there are no definitions describing the terns. Please add definitions.
In addition, the report links Hushing to channel bathynnetry and tidal regimes and does
not quantify the vohnnre of marine waters entering and exiting the pond based on channel
geometry. Please calculate marine water volume entering and exiting the pond
calibrated to the tidal prism data discussed on pages 12 and 13.
The report is inconclusive if the marine water bushing volume is not modeled before and
after to support the proposed recommendations. Add a model that correlates the
volmctric analysis of marine hater contributions to the inlet to support the proposed
recommendations.
This deficiency is furthered in Mr. Lubieich's continent which states; "'there is an
assumption made that increased dashing will improve water quality, There is no
assessment o f tlow patterns within the pond. There is no information as to whether there
is any stral[Ccation of the water in the pond and how that will affect mixing of the water.
There, is no discussion of the effect ofincreased hushing on the salinity ofthcs pond,"
The report states on page 18 that "eDD does riot believe that the Spit plays a role in
regulating f7ushut within the Pond, with the exception of tire possible risk associated
with stores relocating inland the large reservoir of sand that sits parser at the mouth of
the Channel." It would be expected that with a narrow, more shallow channel created by
the formation of a Shit, that the volume of water capable of entering and exirahig the
pond during a tidal cycle would be reduced due to channel geometry. Could you clarify
this statement?
d. Consultant tied/ reviewand consider the existing literature along with the histart of
iradcyl ceadons and local experience at Goldsmith Inlet. Consultant unit/ nicnofe historicOl
photos air( aerial photos to determine the extent a/ the .sedonentation problem within the
Inlet, along with changes to the morphology of the coastal dune, and channel. Existing
r7ocutuunts fazchtdr;: "~l n 2ssessment cifJetty Shortentn; glfernatire,c, Gutdsmltb.IrnTet,
13u}t, raxt H~~lfai°~~rtt.Sharetirae, Selrternfier ;'tills; Frutttution <af l)orvrrdrift.5'trare
Erosion, Alatdtuck Inlet, ' zlpril 2tr06; "Geomorphic Analysis of Mattituck Inlet and
Goldsrndh Inlet, ".13dv2005: "Historical Shoreline C°en{Ye.4nrly is: ITestern In we
Line to ilornef Point, " Aslorrnher /Age, cuad `Physical f1roeesses Sos!V o/ Gulrlmdth
Inlet, °.'007. Consultant willsummarize the.lindings ufpust research, and utilize thc
flndins~s in preparing the suit e,pn nt recommendations.
Complete
5. Weak= wll locate high gtud&Y local climate data, spechi alts vvind data, to I:retform
an anahad of mum ener -y and direction as it correlates ~~ktdh yef-i le storms and
mnditi ms. IN, ware analysis wilt provide insight into the inve m that govern the
movement ol'cou tul sedirnnrrts and their disposition (it and around the Inlet.
C"otnple(e
(c Constdtunt will, In, means of a number cif reasonable aeounptions, idenztfy and rank the
I?#~irrtf?a!,~es c .xstlittrerrtrrtr`arrt.,4rthirr fhe Inlet in an e'ffilrl,irr clr trrr !fixh t3, rrt a c +rr rs;
Krr rss .terrors, vjSt_tl"t9e rirttrt`Qs, he~cdc'1 ith ecpz tt,t,t,iritta 1v~crelr r ,l, {rcatz<iar c°fa.'.,
nravolm"t bbq~ Ft?3£a t(e if f4'SCt 7not* eal d?(!Kt W0Ca,`"cS and St t k to i tynW keir
relative contributaon tea-the, .t(rllr fv), r heads seen at the Inler Consultant W VI retinae the
hydr ahe srudks ahmma}- performcclfnr the Inlet, and considerA" creel pa.eslbte channel
neatru.trie s to model W pruendal of such channel r;eonudr% to re Bean stable while
promoting imlrroved Inlet fhashirig.
This task is incomplete. A ranking, of the primary causes ofsedivnentation was not
included in the Final Report.
As discussed above, the sources of sedimentation were discussed on pales 17-19 and
idennitied as nor easter and ":storms", however, the tanking of pr inrary sources have not
been incindcd within the report, The Board is requesting that a table is added or existing
table is amended identifying and ranking the primary sources ofsedimenudion.
7. Based on tlrese.jindings, eDD nas to lrrepare a set of recommendations that consider
relative fis'luence, cost and prnbability of regulatory cgleroval and tecrhrocal success.
This task is incomplete: Although recommendations were provided and presented in
the report and included within a Table 1 Options Matrix in the appendices, some oftla;
reccrnmveadations proved not lbadble (e.g. agitation dreriong and solidify (grant) jetty)
and therefore weakened the recommendations.
Solution: The Board is requesting that recon aiendations that are not feasible tic
removed firer the Table 3. Options Matrix and all references to such methods also be
removed from the report.
8. C, rant Task u: Final Recommendations and Action plans
Consultant will collaborate with Cornell reaearchers and the Town to prepare a
conaprehenslve report focusing on the results of the findings from Tasks I through 7 ref
the (halal and th wrote describer) an this rlnc aunety, and a411,enervate a list of srtlf=
consistent rcconariie ndation for,future intervention at Goldsmith Inlet. The Report ellall
lt.ytrihe, for a loyperson's use the processes and consequences occurring n atarrdlf and
as a result ofhunaan intens,ntion. To the event that it i, socatifrcallyixrssrlikz,
~tct .r7t_J:orr l,stltT
C'iuvrelloni xtill eltrfrra,rls tlr,t.rerlarctrrtr,_it tolr trr_fr,rrln tilt, Sound Mr iti
rnein_iit,<=v and chonneI gcom<=iries,
this task is incomplete. 'I he report does not quantify the reduction o f scdinie.nt loading
li-am the Sotmd for different proposed measures and channel geometries. Table 3.
Options, Matrix; references reduction in sedimentation in areas ill general terms.
Solution: Amend Table 3. Options Matrix quantifying tong and short terra slralegics that
would achieve the must efficient reduction of sediment loading (in cubic yards) l> om
identified sources.
9. ,1Ithough this scope does ant include a quantitative ancrlvsis or identification of upland
contaminant sources, Consul'tc.rat uut t3rcpc re a rau efrttat,7t- u7iscussro2 n rotenitul
„sou rcc artnt ral alialsllves grin {lesc:rllre' n& l o-3srhtd 'r rt trr, ult<th,controlh7nu 1huie•
sources wars contiitsrY[ Jft atit4q,hstalltl= drttl>rrrt'~'irtc~lgti via the linter. Consultant will
elaborate on the set of recotnesenstations developed in lash 5 gfthe Grant and develop a
,'decision-malting matrix , o'sit oill hiciade Some cursoev rest estialateS Qf these options
for driterverah"era, decree elf dtffictaltt for reguZirtary' approval, and all rssessnlent o0 he
probability of technical tuccess.
This task is incomplete. Upland contamination sources were not addressed within the
report.
10. Finally, Constrltaritstill identifie a single "recornrnetuled courte ofaction" that will
include indlestone fgoati, action itenve Crest estimates, and tnmelrorses for arnplernentation
gf'the design and construction of the preferred inters=ention strategy at Goldsith Inuit
Complete
t I . Consultant and Cosmell will present the Dra'8 Recommendations and Action Man to thcr
l'own at o public: rneetfng, and shall respond to questions regarding the interventions
proposed. Nn, Consultant will alsa prcuare the Final Recommendcnet(irts andA tioe,
Plan which Shall respond to cotnrnent on fire 1); qft. Con'sunant n1411 present the Final
Recoynnrendations and Action Plan and related materials during a second coriference
Call and at a secrond public meeting.
This task is incoaxmplete. A Powerpoint presentation was made to the `Down Board can
August 13, 2011 On August 24, 2013 a community meeting was held with cDD, The
final report was delivered November 11, 2013 and has been posted ibr public comment,
Inadequacies anal comments from the public on the final report still need to be addressed.
Appendix
Terry, Mark
From: Lubicich, Chris <Chris.Lubicich«suffolkcountyny:gov>
Sent: Thursday, January 02, 2014 2:25 PM
To: Terry, Mark
Subject: RE: Final GS Report 1202 2013_Wi I H EDITS.docx
mail,
Ih,Te are spine issues with the final report.
4 1nr cv,nk (m the Foy to fettiir;s t^.<rs diwulism .l out A hand "About any hn% range r rsst corup,ufruhns,
® Sti11h the p4n, option &I the table% i•, the studs a.h,mllv awyn ing Out Ih", NO knig Umn sooLi n is.
6 1 Iwa, is an issulortion made drat u7, rcased Clnd ng c4 01 haprovc uabq clualitti. C here is no
,khesnihmf m floc, patterns within the pond. 'f'horc is mi imorm,ithm as to rvhv0sr thee, is miv
stratiN atmtnol the rater in the pond an.l how that will aftect mixing of the water. 'f here is rw
discuv"Vell A the (0 0 of in, reasrcl flushing car the saluuh of the pant .
G l 1w inc nosed nuthou~ will hlwvr the leVet of ill(' water in the pond at loci tick,, lVilk there tlmi7 he a
sigin i ant ink ieasr iii the area A pond bottom that will he exposed al too I=.de and w, hat Wilk be the
, fwd on tho benthh~ coinniumIx is there a potential to c mate an , alcir nuisdrit v.
0 f low will high tide in the porxclhe mhvLod'
8 Sy old riso is nu•rdfoned but than not ,~onsnlcrcd in hie Erna! nTonanwridnihms.
® 1 have he=ard an, cdotal information that at some point the entne NO was ,.fife; out aml aw e=nd result of
thait unis an on leaso in the size of the Hood shoal. lh„cr is this clfher & front the ns canny iuhh on In
this n1virt.
f lAsio}aheir d. l urhicich, T3,110:.
Piro,ghd KdAi I Icalda t rittntcer
(}ftirV l I okgyY
160 Vaphank Ave
Yaphank, NY 1124)
611 S52 5815
c_lirrs Iabicikl.resulfclk(ountrny_n I
Confidentiality Is3otice: This electronic mail trarsrr,ss fn is intended Only for the use of the Individual or entity to which r,
is addressed and may contain corfidential infon i belonging to the sender which is protected by attorney-client
privilege. If you are not the inmrided iecipwrit, you are hereby notified that any disclosure, copying distribution, Of the
taking of any action in reliance On the contents of this in`oirtiation is strictly prohihteM it you have received this
transmission in error, please notify the sender ~rurno.diate,y by e-mail and delete the original message,
From: Terry, Mark [m,ailto:mark.terryCmtown.southokd.rnr.us]
Sent: Monday, December 30, 2013 11:54 AM
To: Lubicich, Chris
Subject: Final GS Report 1202 2013 WITH EDITS.docx
Chris.
1
The ['own has received the final (draft) of the FINAL PORT: RECOMMENDATIONS AND ACTION PLANS
GOLDSMITH INLET SAND ACCRETION AND WATER QUALITY STUDY and the Engineer's office is currently
reviewing the document. I are sending you the latest version for your file.
1 will forward the final version upon receipt.
Happy Holidays
Mark'Ferry
Principal Planner
I,WRP Coordinator
Town of Soathold
54375 State Route 25
P.O. Box 1179
Southold, New York, 11971
(631) 765-1938
2
Appendix
338 West 39"' street, to1h Floor
New York, NY 10018
Office:+1 646.688.3113
Fa#c+1646.688.3664
www.eDesignDynamics.com
FINAL REPORT: RECOMMENDATIONS AND ACTION PLANS
GOLDSMITH INLET
SAND ACCRETION AND WATER QUALITY STUDY
Prepared For:
Town of Southold
Planning Department
54375 Main Road
P.O. Box 1179
Southold, NY 11971
This document was prepared for the New York State Department of State with funds provided
under NYS DOS EPF Contract 0007079 -Goldsmith Inlet and for the County of Suffolk under the
Agreement for Improvements to Goldsmith Inlet (CP8207)
Prepared By:
eDeslgn Dynamics, LLC
338 West 39'" Street, 10's Floor
New York, NY 10018
Novemberll, 2013
Final Recommendations and Action Plans
Goldsmith Inlet
Town of Southold
Planning Department
53093 Route Main Road
P.C. Box 1175
Southold. NY 11931
Attn: Mark Terry, Principal Planner; LWRP Coordinator
Re: Goldsmith Inlet
Final Recommendations and Action Plans
Dear Mr, Terry,
Presented herein is the firm submission from eDesign Dynamics summarizing the efforts, conclusions
and recommendations performed in fulfillment of our contract with the Town of Southold for the above
referenced project. If you have any questions or require further assistance, please feel free to contact
us.
Sincerely,
Eric Rothstein
Managing Partner
eDeeign Dynamics
Final Recomrreadations and Action Plans
Goldsmith Irlet loss
The Td.tin of eouthold own) and res dents have been concerned for some decades that conditions
within Gddsmi Inlet have treen detencratinng, resulting in reduced water quality, cam promised
habitat, and instability m the Channel Tonrection between the Pond and Long Island Sound. The
problems IdenHfled include; 1) Onstaale inlet r itn and Channel; 2) Reduced flushing due to the
accretion of sand in the Inlet and susoended sed-ments in the Pond, and; 3}Degraded water quality and
marine and -,term habitat
In order to sustain the Inlet cony ior. the Town has diligently removed sand that accumulates near
the mou-h at the Channel and distributed it on tie beaches to the east. This annual dredging operation
is costly, acd is perceived to simply sustain the connection on a temporary basis, Many residents fear
that the Channel is at eonstent risk of closure, and the reduced tidal flows. between the. :Sound . and the
Inlet contribute to poor water quality. to cooperation with the Town, dervish Dynamics {EDD} proposed
a scope-of--.cork that included a series of field measurements designed to establish a greater
understanding of physical changes to the €or.nect'ng Channel that occur. over time and in conjunction
with extreme weather events. The purposoof the study was to quantity the Channel dimensions in such
a manner as to assess the degree to which sedimentation within the Inlet system affects tidal flushing,
and haw to best establ d- a prctoco, ma. monaace regime or an intervention that will best improve
water quality through :increased excilange'with Long Island Sound (Sound).
EDD crate ad !nto a contract with the Tovm in iuly 2612 to perform yeastA tasks related to study of the
Inlet. The project is funded under an Intel UuArmal Agreement between Southold and the County of
Saffic k for ".mproverne it to Godson th IWet." Aso under this Agreement, Cornell Cooperative
Extension of Suffolk C--um`,, under the direction o` Come Brousseau, was contracted by the Town to
Simultaneously pet -crm a set of tasks to measurcthe tidal prism at several points within the Inlet and
the Some, one to aralyze for a number of water quality parameters. Throughout this process EDD and
Cornell have co lacerated in these e-forts :in order to assure that each team receives adequate data and
with minimal overlap. ""[)D's contract rcluded the performance of three tasks, corresponding with
Tasks 4, 5 ants 4 as described n the TObvn's Agreement with the County. Task sT Bathymetry and
Sediment Mcritor:ng covered the field measurements performed and delivery of the Bathymetric Study
Fina. Recommendations and Action Plans
Goldsmith Inlet
and Sediment Monitoring Report (tune 1, 2013j. Task 5 Sediment Management Plan involved the
identification of the likely extent of sediment con'nbutions from marine sources and delivery ofthe
Sediment Management Plan (August 1. 2013).
With this submission, EDDtu'His the obi gmTon,s of Task 8, Final Recommendations and Aaron Plans and
t'te remainder of the contract. The Recommendations and Action Pear Final Reporti elaborates the
findFngs presented to Tasks 4 and 5, syntnasizes th, imaniv.Tion and expertise of both research teams,
and provides a succinct eummarv of management options for the Town's use.
tDD has beer, seeking to characterize and understand the processes governing Goldsmith inlet based on
a period article measurements, existing studies, and expert observation. included in EDD's services
have been the et+orts of Dr R chard 4lreggel of Drexel University, a nationally recognized expert in the
f,eld of coastal sediment transport anti erosion, who is ramiFar with the phvdcal processes that govern
similar inlets and the engincering efforts that have been employeetc stabilize them. Dc Weggcl has
served as Senior Adaisorto the project, e-viewing and advising EDD's efforts in the field and ip the
office. As part of his scope, Dr. Weggel reviewed a selection of the research previously performed at the
stet; and spent one day in the field o6-serving EDD"s re!hymerric surveg- Dr. Weggeiwas also
instrun-.ental in establishlo, the field protocols and meademeet goals of Task 4. configuring anc
interpreting the model ng of Charnel behavior using the US Army Corps of Engineers' DYNEET model,
and cant,ibotmg irput finta the conclusions and recommendations to- managin, the inlet in the future
Z4a4-:u+.+-titt-suk=+=urx.+-44isR,~po3t carvsE+4,, ,.x,.+w>:+: r,s, r,-nj,, vw~jm,.+,g-ui--'Ni-€4
wru3~I-r>aw~«is.,ayes+~a:o«,+pv>t»a+3#n<.t,{;k f~e4}-„F.~v~,s+Rs>-winn+-alvc 44„rc4iu,+oss-ywsent r+.!-,dr,~
fl`, W,rutel i1.0 or,4ort=r-t.1A:s..w tfsraa94144rr#ats+.=..S.ar~<a+r-,k..Itlass~i..4tx,t, Sri kkv. wife, t,44X;,-,411
tlct(,"nts,tral m,,6.1. c3+.r+t..u:E r{itstrr-y-soHwns:-+~,I L>tib-i,girs,
f*{ J~Strk{ qd i. {h.y eix, 4-4-,-i3f Rk4fK+f.f4rilia zi}t
EDD researchers also reviewed the. literature. and led the efforts m coordinate field activities with
Gomel'.,. Extension. EDD devised the plan to estabbsh a mi tin7r!ni of twelve "permanent transact
locations for measuring Channel geometry. Tech-Bques are standard field practices to measure depth to
charnel ben from a known elevation, atoizing a taught transect lire tied to markers at both. banks, and a
Firal Recommendations and Action Plans
Godsmith Inlet 141
surveying transit to read the depth at each measurement point. Iwe held personnel are needed for this
p"oce6s, one co operate and read the transit and One to place the. surveyor's rod within the rhannel at
ten foot increments Each transact marker svaslocated and elevation determined with respect to xa
permanent marker placed in the adjacent parking lot.
After the second visit to the site, the tearrdecAed to also include measurements of the Channel's
thalweg, or :he deepest point within the Channel section. Elevationsof the thalweg were measured at
ten-foot increments by similar technique, utilizing assistance from Cornell Extension. Two researchers
stood in the Channel, each carry'mg a rod and connected by a ten-foot length of cord. the advance
researcher would pull the cord taught and Locate the next point within tire tbalweg while the trailing
researcher herd the rod to be read by the surveyor. In this manner, the team took add recorded
measurements along We entire length of the Channel,
In total, F ID's team visited the site on four separate occaslcros in performance of the bathymetric study.
Curing these v sits, rDD a,so asslstec Co,nell Extension with surveying their monitoring. points, and
spo'se at ecgth with:vrs rocs and residents who expressedcuricaity about the research activities. The
final site vis1t occurred on March 2"vv. 2013 EDD also attended and presented findings to the Town
during a Soothold Towr, Board tleetng on August 13 and a Goldsmith Inlet Public Meeting on August
24; 2013, EDD Managing Partner Eric Rothstein and Project Engineer Alex Renner described the efforts
and conclusions of tie study and responded to comments from the Board, employees and residents.
END v'sited the site on four cccas!e-rs in fu fi'l,Iment of Task 4. The first visit began on October 7, 2012,
and consisted of two fu I days :n the told as the initial transect markers and benchmark were : .
estaolished A-, -he time of this visit. an extensive sand: spit had developed at the mouth of the Channel,
extending from near the ba-,e of the jetty and parallel with the shoreline toward the east. The Spit
caused the Channel to m-n eastward. and created a large and deep pool in the area adjacent. In an
effort to track the accretion or erosion of the Spit, EDD located some of the transact markers: such that
the Snit would be included in the CFanrel measurements. Because of the and shape, several extra
transect lines could be dravan bet.r.eer the markers, further characterizing that area.
Final Recommerd-it on and Aetna, Flans
Golo_mith met
v j "5 S
The transect markers consisted of four-foot rebar spikes driven into the sandy embankment. A length of
fiber reinforced caution tape was se_urpd a, the bottom of the spike before it was driven, and several
feet of tape were left Tying on the coed sure ce it, order to more easily locate the markers on. subsequent
visits. The tape was also labeled with the marker ID and, in most cases, marked with a "Please do not
disturb" message for carious passers-by, The nlet is a popular destination for residents and visitors.
-DD urvo stood that there existed a risk -that the markers could be pulled or moved; which would
interfere with the cngdmg research. EDD was also aware that accretion and erosion could either bury or
wash away the markers or at least make them difficult to locate. To further assist in their location, the
tops cf rue sp'_cs were panted safe-..y-oeange and photographs taken to help identify them. A total of
4 marxere were installed, ranging from the Sou id-side et the Channel to south of the Channel proper
and across the flood shoal.
On the second day, EDD measured io transect lines crossing the Channel (some markers were used
more than orce), and curveted the locations. of each of the markers. A representative from Cornell
Extension vso arrived so that we could assist them with surveying Vm locations of their water level
Inggers. These procedures consumed, the entire day. There was not sufficient time to survey Logger41
located at tie south and, of the Inlet,
Oil October 29, 2012, hurricane Sandy made landfall in the. area around southern New York State
ircirt The Si Fork of Lone Island. with several days to anticipate the storm and its potential
effects on the Inlet, the Town decided 'o perform an emergency dredge of the sand spit that had
accreted near the jetty. ^JD was informed that on October 24 " the Spit wasxenoved and the stand
relocated to the east, al owing the Channel to flow more-or-less straight between the Sound arid the
Inlet it aco), cmrc, e, tit -I LC drc:Ci,vt s C'-rmiU k, t ec to tilt, l own.
ytkte-Orii #eae-catcci r at the time was that the imminent storm could push the, Spit up the Channel and ea m,ttrd: fl8jhligh&
cause significant blockage that would later become difficult to remove. Ihis process has been discussed
as the "formal effect," whereby high energy events with w nds coming from the castor northeast would
drive a large volume of sediment into the mount of the Channel with the jetty acting as a furnish
Residents aka described, that, prior to the tC1124 dredge, the course of hit: Channel. had been moved for
enough eastward 'to. use cro,icn of the dune.
Final Recommendations and Adion Plans
Go,dsmith Inlet
Q
On. d styAito . ni ~f i I „ccl .,,le11u, It tri iniul f n te, ! POrnraHad: Font cglor Blue
t I rt t h r h, r OV- I I I tI , ny cic? h( u u s I li r aI It u I i Form rttech Font color Blue
Ft i 3 ri I III I d I e X1 3 ti UI# Ih ',td3iijfl[Ir IOI,IIjt I, §tr 111 i~ C Q}e:..
~r.,rir;:.. Farm3ttea Font color Blul
r I_t r r-'a ,IS.rU Al
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;
.n .-.c°r( ,.r^d S`o' i~ vt el>. I Furmatteri Font,olnr she
VVII:DD arrived far the second site visit on November 9, 1012, the Spit had not yet began it) reform
and the Channel continued to run mostly straight to the Sound. Beyond this change, EDD did not notice
any other slgiificant erosion or deposition that appear etdto be due to the Four m. Four of the northern
mast markers, however El W 1, W'2 and is 3), could not be located, lr ,ehaf c theywere Far+ew:.. +
or ootI3G revo is f 1te.(4r Ufa, 3b Because of the new conditions at the north end of the Channel, it was
(I decided that not all of the markers needed to he replaced. EDD cradled one new marker, W3*,nearthe
approximate location of W3. On this visit, eleven Channel transects were surveyed and recorded.
Dr. btreggel accompanied the FDD team for the third site visit on December 21, 2012. Dr'. Weggel had
been reviewing the data c elected thus far and had become Increasingly interested in acquiring greater
understar(,ng of the behavior of the thaiweg within the Channel- Dr. Weggel's assertion has been that
the point within the Channel most cntc.a. to regulating fiowrates land thus flushing of the Inlet} was the
area tenoccthe "Sill;" or the stretch of Channel thalweo :hats ,,s highest above fire average Channel
elevation. The Sill location could be approximated from the Channel transects, but would be caster to
Identify, if the thalsveg dse f were surveyed arc in smaller increments. It a simple protocol could be
established for dentifymg the Sill, then recommendatons for periodic dredging could be based oohs
location. A total of 59 points along the thaiweg were surveyed in ten-foot increments. However,
unusually heavy a9nds and rains throughout the previous night and into the morning altered the normal
water level expected airing low tide and shortened the low water window during which measurements
could be made. With concerns for_+frty, the team deu tied to rorego measurement of the transacts
during this visit. Dr. Weggel used this time to hear testimonies from some area residents and view
historic photos of the Inlet. Additionaily, transect, marker W'2 was found, having been uncovered since
the previous site visit.
The fourth and final EDD field visit occurred on MFIc.n 20, 2013, By [this time the Town had performed
construction of r,prap armoring alingthe west bank of the Channel where it is nearest to the roadwey.
Two transact markers, vV3* and Wa were lost in this process. ED" was also unable to Incite E2, E3 and
frial Recornnieirld lom and Action Plans
Golcori later
w2 due to movement of sand and charging topography Light IIansect surveys were perfoi mad using
tie remaining markers, arc arterial of 11 points along [tie thalwegfrom Sound to shoal. Cornell
Extension arrived to assist n to. surveying their water level loggers I riggers 1, 2 and3were surveyed,
but the logger m the Sound was not because of low *.emperatm P5 aril rough surf.
1 he geometries of the Chan re, connecting Goldsmith Pond and the Long Isla no Sound are perpetually
changing and, in the process, influencmgthe flowrates between the two water bodies. For the purpose
of clarity, we will usethe term '1niet" to refer to tie entire system, "Pond" to tufer ece the deep water
body to the south, and "Channel" to refer to the connection between the Pond and the Sound (see
Figure 1;. The field esearch performed by EDDwas designed to document and quantify those changes,
and to correlate them with trip tidal prism study carried out by Cornell Coopetalive Extension along with
climate data reported during the study. period. The concern behind this effort is the appearance of
der Wished water qualny,onditlons vitnin you seats overtime, and the persistent concerti that, without
interventua , rFe Channel will become ovvrLt, men ed with marl ne sediment, thus red uclrg flushi rig with
the Sound and further diminishing ware, quality. It is also a concern that this process could lead to
Channel closure, erne'the rorspjuence of gradual sediment buildup over Urns, or this Tesult bf a large
volume of sediment washed into the Channel durng a high energy storm event. For somoyears it has
beent'ne town's practice to perform a dredging operation annually near the mouth of the Channel,
removing tie sand that has accumel ated it It e.Spit and to a.point spires! mutely adjacent to Transact 4
sec Figure 2) in the Channel, relucaUng an estimated 13,000 cubic yards of sand on the beaches to the
ear Tie [own has been interested in verifying the efficacy of this practice and Identifying allerrvatives
that could be. employed at a lower-cost anc with greater longevity ( sustainabilltyThe Channel connects the inland Pond with the Long Island Sound, and is driven by the relative
elevations of each watt body; which is re„ elated by hie tides. As the tide rises, water flows into the
Ponc at a sufficient rate to _ause tha elevation in tie Pond to nearly niatch the elevation in the heard.
In a typical cycle, the Ieeel in the Pond will reach approximately 0.5 feet lower than the peak in the
Sound, wits a debay of 20-30minutes Curing this f coding period, there is no significant obstruction
limiting the flow of water into the Por d, and the Pond elevations behave es if they are entirely regulated
by the tide. As the tide recedes in the Sound, the Channel flow reverses and the flowratc out of the
Pond remains sufficient to keep tie Pond level equal with the Sound far a period of two to three hours
riral Recommendations and Action Plans land
Go''dsmtth Inlet
At this point, the level in the Pond has dropped to the peril where the physical properties ofthe
connecting Ct ar nel begin to imit the rate of flow, arm the Sound begins to drop more quickly than the.
Pond. Min mum levels in the Pond never fall as low as low tide, slice the ebb flow.txails behind the tide
due to being restricted by the geometry of the C'nannel. Approximately nine hours after ['high title, and
three hours after law, thde, the flow in the Channel reverses direction, and the Sound again begins to
flood the Pond. This ryp cal cycle is flim trated in Figure 3.
During each cycle, F. volume of water flushes out of the Pond and a slmllarvolume flushes back in. This
twice daily exchange. helps to sustain the coal ty of water in the Pond, which also receives Pews from a
series o- drainage culvei part of We L,wn_s M a sw,toni) that link the IFlletto nearby ponds and
topographic depressions. IFwater ci ty in the Pond N not to diminish over time, then the combination
of tidal flushing along vsth the Pr 5 biogeohem cal prpcessesmust flush, decompose orsoquester
(onorninants at a rate at least eq.rato the contrbuting load. Each of these processes, and others, have
considerable influence n the re ti suite of ecalog,cal conditions within Goldsmith and the Inlet's long-
term'neathtmuidsiration of upland contributions to the Pond was not part of this scope-of-reark.
EDD's derailed tr nsec study performed October S and November 9,2012, and March 20, 2013,
produced three snapshots of the Channel floor. Based on these measurements, we have generated a
summary of the ner, cepositicr and r eioo that occurred over each time interval (see Table 1). Figure
4demonstratea this same summary graphically, using colors to signify the net extents of both deposition
and scourirgwithln each e.,rtioe oft'ae Channel over the period of time specified.
Figure 4Ashaus changes to the Channel bathynryl between October S and November 9, 2012. During
this polled, several major events occ.irred which were expected to alter conditions at the Inlet. On
October 24_", the Town performed a dredge of the material that had accumulated at the east of the
jetty,a sizeable spit of sand protruding eastward and causing the Channel to also move to the east. The
dredge was performed it advance at-lurricane Sandy elneartbecause of concerns that the high
energy storm could were Vie mate,ial mired toward the Pond, nnd-toprevent degradation to the dune
m ea>, of the Inlet m~h_th, On October 25'", Sandy struck the area causing considerable storm
surge and also a terirg the Channel bathymetry. On November 7`" and Se, another storm, a Nor'easter,
dropped an inch of rain under high winds, further altering Channel conditions. The changes shown in
Fine'.. Recommencationsaid Action Flans
Goldsmith Inlet
Figure 4Aare the result Cf all three e erir as yell as smaller dui 1 changes. Flct depo=ition during this
period, measured between Transacts 6 and 111523 ft), was 11,200 ft'.
Figure 413demonstrates charges in Channel bathymetry between the survey dates of N4verrber.9, 2012,
and March 20, 2013. Several high-energy climatic ew ioccurred in this period, too, but with different
effects. Net deposition during this paned measured between Transacts 6 and 11 was 2;800 W. F'.goes
4:11descritas changes curing the entire interval from October 8, 20'2, and March 20, 2013, hiustradrg a
total net deaasrt ioh of 14,000 ft', These values translate to net daily deposition rates. per foot of
Cra:tnel given in Table 1 Toe doily calne for the second monitorli period is more than an order of
magnitude lower than the period containing Sandy and the Nor'eester. This soggesfs that those events
played a very large role r the net movement of sediment to the Inlet interior. As measurements were
not taker w th Suf` dent frequency to identify the physical effects of each ma;or storm, its unipossible
to describe rates o` deposition and scour associated with individual climatic events ui these data
alone.
In addition to the transact measure hems, EDD t vice surveyed the Channel in a manner designed to
map --he barhvrretry cf"the Cianners thalwcg. The thoweg deacr bes the oeepest cart of a channel or
valley, and genes ally oefines the parted of the channel that possesses the highest velocities and volume
flowrates The thalweg hecame included in the ba_hyntetric study due to an interest in locating the
paint n the C annel that. regulates the ebb tides from the Inlet system. The ebb of the lelet is
pird poly driven by the Pond elevation relative to the SCI within the Channel. The Sill behaves '..Ike an
;mcerwater dam or we!(, and slows the water upstream. Once the water spins over the Sill, it ceases to
De eegulated by it, and the velocity increases, Genera, ly, the Sill in a system such as Goldsruti idiot wit
define the rare 0? ebb flow, especolly toward the and of the cyce. 5y taking measurements of the
thalweg along the portion of the Channel which i5 most likely to constrict the flow, we were able to
locate tie sore where dredging w::.ll be most effective. If subsequent dredging ope•ations are able to
irate, the Sill by excavating the Channel floor in this zone, the rate and period cf discharge from the
Pond can be increased..
Cornell Cooperative Extension collected data at the Inlet between h4ay 16, 2012, and tvlw, 23, 2013.
These data include the ovate, cvels logged at three iocatlons within the Pond and one in the Social. The
FinarRecornmendations and Action Flans
Goldsrr Sb lolet
data are -Z sufficiently' nigh resolution to allow us to understand the cycling flows into and nut of the
Pond (see Figure Sand discussion below and tc provide Vs a re-card of climatic evens as they :influence
the relationship between ater'lovels in'heePond and the Sound.
Similar data, though of esver deta;l, were collected by R•iorgan & Kraus in the execution of their
"Physical Processes Study of Geld~m _h Inlet, New 1o"F.' 2907' in this paper, Morgan & Kraus assert
that the i„h goG1s "flood demmar-,` w,th higher aelnrit..as arm hlghersediment loading found entering
the Fond than when d-aming tie fond. This imbalance leads to a net sediment loading that is. most
visible in tie. accumulation of the door; Shoals at tie southern end of the Channel, since higher velocity
water is capable of greater sediment carrying capacity, fOorgan & Kraus also assert that at least two Sills
rag,date ebb flow from the Fond, one near the Pond shoals which plays the larger role in regulating eab
flow, and one nearer the Sound, which plays a lesser role. EGG s .halev eg measureme -,,s ocatec a Sill in
the area between Transects 6 and 8. Thalweg measurements father acorn Into the flood shoal were
not feasible because of tire very subJe changes in bathymetirythere where the Channel floor is nearly
flat over large ec-ions.
roorgan & Kraus also dueass tie morphology a' the beaches, jetty, and mouth of tile Channel. They
summar'.. ze that after jetty construction in 1964, as the fillet to the west of the jetty gradually formed,
card transport and bypassing patterns from west to east were altered until a new steady-state was
reached. Gunn;-g -hs time, lasting until aporoximately 1978, beach ssmsien to the east may have
accelerated as the ;-oral drift was interrupted by the new jetty, After this time, and with the formation
of the Spit it the east side of the iettr •ana attachment fillet), sand hypassing resumed and beach
conditions became more stable. Morgan & Kraus warn that removal of the Spit may reintroduce
Instabilities that could again aLerthe ittorcl -ordntchs to the east by interfenngwitn the shoreline
geometry and -educing bypassing, though they ackncrviedge :hat removirg the Spit may be necessary,
or an emergency bas;.,, to maintain an open Channel.. A corollary concern not directly addressed by
Morgan & Kraus, however, is the potential role of the Sp', (and the eastward movement of the Channel
mouth) it reducing the rate of seclimert transport from the Sound to the Channel At the same time, we
are a'so concerned that the accumulation at the mouth of the Channel could become a sediment source
during high energy storms: thus' ns. easing the volume of sand moving up true Channel and into the
'Morgan, N 1. and Kraus, R 1200) "Dhysicai Processes Study of Coldsmirh inlet; New York."
Proceeding; Coastal SCeiments'v? Conference, ASC.E Press; fa, on; 'JA 2331-2344.
Final Recommendations and Ac-ion Pans
Goldsmith Inlet
nr~
Pond. This is the condition that has been discussed as the "fun i effect. "This refers to the condition
that permits sand to ace umdlate directly to t'ne east of the Jetty and at the mouth of the Channel, a
result of the easterly predominance of littoral drift. As there is no tenses, structure to the east
protectri; this accumulation, it becomes vulnerable to storms with westerly .mods, and the
accumulation can be conveyed south into the Channel aid tie Pond. While this process has net been
quantified, assessing the actual degree to which sand poised at $e moitin of the Channel ;s conveyed by
westerly starers, it has v_en this pre3c cop-ion that has justified u-cr c removal of the Spit that
i
develop, east of the Jett}.
Exammatioi of the voter level data snows the presence a`twc daily tide cycles (semimurnal), one with
greater amplitude tray the other, deoendu'.:g on tie relative po itiois of the _sun and moon. The .nave
forms are sometimes distorted due to tire'.. nfloence of climate, particriarly v, rd speed and direction.
Naps: matabiy, were, Lv ds measured A the Space! will shift up or coa r depending on the wind, thus
mflue icing the water level response in the inot. and the degree of flushinng experienced in the cycle.
As described above, the flood period sees aciose relationship between Sound levels and Pond levek,
and flow into tie Pond does not appear limited by the geometry of the Channel. 'hater levels during
the can Ponce, however, are rot similar, as the flow cut of the Pond is restricted by Channel conditions,
and the Pond reachesa minimum elevation wel''.. above the Sound. Study of these Pond m n..ma as they
entry over time provides insight into riow the degree of tidal flushing is influenced by c',imatic conditions
If the acrd drnps to alevel that 1, higher -ban average,Yhen it can be presumed that flushing is limited
during this cycle. If these minimum levels are for nd to be increasing over time, then it is likely that the
Channel geometry is changing, either through see meat movement or. deposition, and reducing the
volume flushed. Simi;larly, if an abrupt and sustained change in the typical minimum Paid level !s seen.
',t can be presumed that a higi-enm g1Y c imatic event has occurred, and flow conditions in the Channel
have been altered.
igureSAvacks the mimmcm. elera n in the. Pore for the ens re monitoring period at Logger rR3. Spise, Formatters tilpt : .
In the graph ndicate either extreme weather event, or anomalies in tie data based on Instrument error.
Since we are interested in trackingthe changing minima; we have generated Figure 59, which ignores
the extreme events and ca Is out periods during which the changes in the minimum elevations can be
First Recommendations and Action Plans
Gad,unoh Inlet vin
interpreted as being In one direction only and at similar rates. Ten periods were isolated and fitted with
11 iear `,rend Fries filar aopcoximate the rate of change. The slopes of the trend lines, which very
between positive cr regatt ve minimum elevations, are reported in Table 2 for each period. Where the
slopes are pos ive, the "lusii ig volume is decreasing and, while slopes are negative, flushing is
ncreaslnfl°eriod vie, which lasts for 108 days, shows no net increase or decrease in Pond minima and
demonstrates relative .,tabiht,•. Per!..ods Two and -'en, which last for 58 and 43 days respectively, show
dramanc nine p•olonged changes in tie lasb.ng volume which would be associated with consistent daily
changes Iin the Channel Cathy auy due not to extreme climate events but to more subtle conditions
that are regulating deposition and scour. One anomaly in the data occurs on 2/18/13 and 2/19/13,
alien the minim om devat on n the Pond drops 0.5 feet, and then only slowly rises again to near its
previous level. This is explained by lacking at the mmimurn, levels in the Sound. as seen by the logger
there aid at several other points -10 the west During these two days, conditions drove the tidal range
down below its typical clev3t:.o9s, and the sob flow from the Pond was enhanced, thus allowing the
Pond to crain beyond the usual range Tne `act that the flood flow into the Pond did not immediately
compensate for this drop implies that there ara also regulating structures within the Channel that limit
inflow. Although. not coovlusive, the genefal trend of the ordlre study period shows that net conditions
over the long term are slowvy leading toward net sediment deposition,
r his conclusion f, consistent witb the clepositiona! rates calculated from the Channel tr^ansects, which
suggest an average depositional rate fexpresse;l as cubic feet of sediinent deposited over one foot of
C loins) nor day) of 0.57 fm/ft/day for one period between 10/8 unit 11/9/12, and 0,041 forthe period
between 11/6/3.2 anvi 3/20/13. The water level data also suggest that if an additional transact survey
had been performed at the end of Iscay 2013, the final period would have shown net scouring. Because
the transect measurement, were performed only several tunas, and because the water level minions
only describe trends it -'Iuvrmg volumes from day to (Jay, it is not possible to verify or quantify these
conclusion, with certainty. However, the data does noaCe R clear that: a) There exist alternating. periods
of net deposition, net scouring, and relative stability, and th These periods are generally separated by
high-energy climatic evsnts.
In order to elaborate this second corcla5i0n, EDIS procured detailed climate data from the National
West It er Service collected at V,at'nt;ck n;st,dha nearest dimate station available. TIhese data,
Final Recommendations and Action vans
_oldsmith Inlet 60
reported in five minute ntervak, provide record of wind speed and direction, the climatic factors that
most nfluence tidal flushing n the Hot. UnforturatelY,, a flaw in the operation of the climate station, or
an error in repcidrg, has caused some of the data provided to be incomplete. During each early
morning, for a period of approx'. marry three to four hours, no data are reported. This appears to be
true Lint 1.April 26, 2013. warn the daily records are complete. Additionally, the precipitation record
appears to se with that observed at Soat old and with other (less detailed) data sets
procured byEDD. -a compensate for this, we have usad the precipitation record from daily climate data
reported by Wundergroand.cam. Tho gap in morning w no data could not he coimpehsated for In this
analysis.
As soon in figure 5, it is reasonable TO presume that the various periods of rise or tall are distinguishable
by arge c,lmatic events or other physical changes to tie Cnanntiksuch as dredging or offer construction
1 wo r Figure 6shows a snapshot of the winds eeo, (lirection, and recirhation depth for the days Formatted Hx r, ant ,
separating each pe, od. These "wind roses" graphically demonstrate the direction of origin and shows
an accoun`.ing of the average wind speed measured n five minute intervals. Calm days appear a5 blue
and g cen. Windy days typically lean in one prhnary direction, and appear red and orange, denoting
' higher velocities. Compaucor ofd igures SAand'58demenstrates that most but not all per wds are Foraratted r i <ard
separated by large eve )is. Additieral t, scrutiny of the d mate data deinonstrates that not all high-
eneahvclimate events provoke changes m Channel conditions. Figure 7shows wind roses for a %rdectlon
of high-energy events that do not appear to have influenced Channel conditions, While wind speed and
direction are incontrov&nble components affect rig scri loading, we have identified no obvious
consistency between these specific events.
Preapitation does not alas a direct role in ihf)uenc ng Channel hath rnetry or tidal flushing, but does
play a role !n the measurements of 'water levels in the Pone The total catchment area for Goldsmith
met is approximately 644 11 (see Figure g). Under roost conditions, the vast majority of rainfall
reaching .h,s area is infiltrated by the sandy rm of the region, However, during very large events, or
events that occur •vchile the soils are or viousl'v saturated, significant volUmeS of runoff are expected to
reach the Pond and rase water levels there. Add icnally, groundwater in the area likely discharges to
the Pond at a relative yfixxed rate, but this rate wi I'nccease when thegroundwater table is high. In
these ways, precipitation does play a role b the Pond water levels, though quantifying that role is
beyond t tin siope-o,-work.
Final Recarnmendiocins and Action Plans ,
Goldsmith Inlet
Use of aerial images to assess siightchanges in lard forms is lariblamatic for several reasons. Variations
in resclutor, lighting conditions, and camera angles can each contribute to apparent inconsistencies on
tic ground that donot germ rely exist. Furthermoi e, the water level at the time of the pnot r6i Doll wil,
have a lardy Influence on ".reappearance or cove of the intertidal zones, making t difficult to treasure
beach erosior, Channel widths, etc,
Google Earth provides the cpporturity to view histai Ical aerial images in rapid sequence (see Figure 9)Al Goldsmith Inlet, the record goes back to 1994 aid shows 12 seoarate images of the site, each aligned
identically to allow for close inspection of landmarks and their surroundings. Although these
observations are not conceswe, an inspection of these images provides sonic record of visible changes
over the past 20 years
I he flood shoal present at the Pond's connection with the Channel has been ev,dent for some time. An
aerial. photo Taken in 1938 shows clearly a portion of the developing shoal, thought it appears to have a
much lesser extent than in recent vice's . Again, th photograpr does not inform us of the tide elevation
h influent ng isibiaYj,and lighorg conditions may interfere with toe abil ty to dstinguish the shoal, but
the photo coes provic.-.U with evidence that tie flood shoal has grown toward the Pond r for in tie
past 75 pears. Aerial photos Taken in 1962, 1972 and 1978 also appear to cenrl no this observation. The
Google Ea th mage treat 1994 appears to have beer taken at high tide and the shoal is not visible. The
subsequent images, ranging from 2~~l to 202, suggest that the shoal has not bee growing to any
s'''.gnificant degree.
As discus _d a'ouce, the Channel is a dynamic body thatis expected to alter course ever time and in
response us extreme events Tnis is primar!ly, evideit at the north end of the Ciarinel where its course is
alte•ed by the secreting Spic and by its periodic removal by dredging. As the spit Brews, it appeals to
force the Cheney'''. to exit further to the east. Based on Google Earth images, tie spit is shown increasing
from 1994 +.o 2004, '.vita a oramat'c reducVon sumetime between 4/1/04 and 10130/06. `he Spit again
increases until 9':/09, and is shown reduced on 9/19/10. It :s reduced a third time refore tie image
dated 3/6/12. The Channel is also shown scour:rg very close to Mill Road in 2004, but that appears to
be corrected by 2008. What ~s clear from the 1938 aeral is that the Channel has generally migrated
toward the west; eliminating-some structures built east of Is ill Road.
F o;l Recommendations and Action Plans
Goldsmith Inlet
W.
Assessing beach conditions from these aerial photos is especially difficult because of the variations in
the Ides, but it does appear that, in Image taken after the Spit his been removed, the beach to the
..ast is also d,minlsnee. This would be consistent wlih Morgan & Kraus' assertion that the fully
developed Spit aids In card bycassina from west to east, and its removal could interrupt beach accretion
ui4l some eteacy state is reached. &9organ & Kraus also assert that for 14 years after construction of
the i;tty, saed that Aou:.d have Peen deposited to the east of the Channel was instead accreting west of
the jetty t- form thefihe,. Once the western filet and the eastern (attachment) fillet reach their
maturity, the sand byoa,sing process and deposiricn on the eastel ly beaches have. reached a new steady
state. In general, it appears clear that tire width of the beach to the east has di nlnlshed since the
earliestaenal taken in I'M.
Careful inspection of the dunes over the Beach, par`Icularly it the point immediately east of the
Channel, rI ows that there has beer, -toe or no retreat of the dunes since the 2001 avocet. When
comp-a"ingthe 1994 with tie 2001 Image, however, it appears that the dune, retreated on the ardor of
20 feet, wh ri Is vgnificaot. Because Of image qual,ty and camera angle, if is difficult to compare with
the. aerials taken before 1994.
After cc rrUuction of the jetty in 1964, the accretion fillet to its, west developed, extending the beach
odorant in •hejetty bya total of approximately 300 feet. An aerial Image from 1967 shows the fillet
extending dreary hab the way up the jetty, though with TO signs of the attachment fillet to the east. By
1977, the ar r retion fillet is developed, and tie a'tachioont fillet has begun to form, and by 3.978,
rord'nlons rase iible those found today w th ,be Criminal bending far to the east before connecting with
ttie Sound.
In. order ;o corfir,m the role of the Sl In regulating flow within the Channel, EDD prepared a flow model
based on the hathymet is measureriantstaken in Task 4. The model; constructed in DYNLET (DYNamic
Behavior of Tidal flow at nLETs)', is a pacsage first developed bythe US Army Corp of Engineers. The
modeling allows us to correlate the water level data with flow in the Channel, and was configured to
confirm the role played by the presence of the Sill and to predict changes in behavior that result from
A ne:.n&tr cs, 9911 D+`a ET1 Dpnam'l,c l rncdioit Rumercal model Of One-Dimensional Tidal Flaw Through
inlets."TRCEnrii-10;US Army Engire'v sllerway5 fxperlment Station,. Vicksburg, vs.
Final Recommendarionsand Action vlans
Goldsmith Islet
dredgmgthe Channel bed to remove or relocate the Sill. DYNLEI" looks at the Channel geometry,
mate no c (to : ssess fric:lcn) and the forces driving how namely tides. soaves and wind.
DF'NLE7 was used to investigate the effect of dredging the Goldsmiti Inlet -channel;;n the region where
the nigh sill elevation controls the flow. The sill region is approximate!..y 360 feet long extending
between..survey Stations E5-\V5 and E9-IN9 (see Figure a0t, The thaiweg elevation in the sill region is
about 0.8 to 1.0 foot above the Long island grand mean tide eve'... Outflow from Goldsmith. Pond is
limited by the elevation of the slil and thus the tidal range in the pond is controlled by the sill.
The DYNLET model was run for a spring tide in the Sound with an amplitude of aicut 2.8 feet (tidal
range of 5 s teat). A rough calibration of the model was conducted by running it for several channel
,cughnesr Ford;tions characterized by the Manning coefficient. Manning coefficients of n = 0.10. 0,08
and 0.025 were run and the resulting tide levels Ii Goldsmith Pend determined. The run for n = 0,025
most closely reproduced observed water levels in the pond. Figure 11 shows the forcing tide in Lont;
Island Sound and the model output water levels in the pond. The pre-dredging condition is shown on
the figure Along with two past-dredging conditions. The first of fire '.we post-dredging conditions (Post
Dredging 41 on the fiii investigated dredging a 30-foot wide channel to art elevation 0.25 feet above
mean tide removing abort Or J feet of sediment - for a distance of 360 feet above survey Station LS
WS. This corresponds to removing about 8,000 cubic feet of sed. meat from the channel. The second
condition (Post Dredging #2 on the f grief investigated deapenmg the credged channel to the mean tide
elevation by removing about 10,000 cubic feet of sediment. The dimens ons of the Chan ten were the
same as toi pnst Dredging.#1. Figure 11 shows An.increase in the tide range 5n Goldsmith Pond -or the
two dreogme conditions with the greater increase for the lower sill elevation. In fact, the bottom of the
tide curve I? the pond is approximately at the elevation to which the chanrel sill is dredged. For the
second case the bottom of the tide curve is at about mean tide, It would be expected that further
lowering the vnannel would further increase the tide range in Goldsmith Pond.
.:<e vc,.I rY.:. t.tt
Aiarge number of climatic and geo physical conditions u'flJebce-.he rate and direction n€sediment
movement retuned out ofi the Inlet. The research presented here was able to quantify net sed;rnent
volume changes with a. portion of the Channel during some discrete periods and, with vie use of sonic
reasonable assumptions, demonstrate 'he ne',: direction of sediment loading within too part of the
F nal Recomrr endations aml Action Plans `
Goldsmith Ii
Channel where ebb flow s most restncteci, Water level data shows that peak elevations within the
Pond are nr arK, equal to cock in the Sours. Flusning ecdulnt-c Fond, therefore, rs nigher when the
minimum clovabon in the Pond drop, ow, and is dim.nished when the sure nuni Fond elevation is
elevated, Figure SA appear<to demons`rafe that minimum Ford elevations tie generally increasing
over t,me when coosldenng'he eritine some oeliod Over sIimr ei i Acrvals, however, the Fond minima
,how Cott u r reaslnis and decreasing .rerds, su c V,finr that sediment is sornvbmes reducingthe site of
tyre restricting Sill and scmet mes enhanr rep, it.. Those "daily' flu ctuatiore, are on the order of 0.0.5 ft' of
denosnio r .,tr fa,t of :'Far ne lanaf t pe day isee Table 1;. Th s is cased on the period. between
1119112 aid 3f2j,/13 itrarsact meaourement dates; and assumed I.mited "hulk" rout ributions from
storm events Transect measurernerts taken before aid after Her, cane Sandy and the subsequent
Nor'easter de nonstrate a significant "hull sediment contilbution of approximately 11,000 ftr over 32
days. if we subtract a oe "daily" race from this trend, we stiil.,ee a net increase in sediment volume
fou un with n'he set weved portion of the Channel of app,olun,afely 10,500 ft' due to the storms claim.
Tvc velum a<<-aunt,t_r 7E°%ofthetatai sed,ment ncrease measured within the Channel during the
163-day study period, far esceecirg the cu siclil i e rill efsmall daily changes. Over time, however,
forces some ce, cot?tbme to crave a ret redudit; effecr or. Channel sedimentation. Those trends are
apparent in -able 2; especially Period Ten which slowed a -drop in Fond nummum elevation of 0.36 feet
m•er 43 days without the benefit of several years' water level data, it is impossible to assess whether
tie storm-driven ilenositisn is even rally reversed It is -clear, how ver, that high-energy chiral events
can drive a large volume of sand Irites -,he Channel, and that daily cad and flow can either drive sand in or
wash it back out tor the Sounc It is also clear ties while a substantial volume of sand was dredged from c For mark Hit
the Spit at toe mouthro`tre Channel in Its days'. before Sandy, this did not. prevent the storm horn
carrying sand into the Channe I P d 1_irg ocunrc 61t r,ne I ,on onh Ilse 5 iu t" of sand had
vn u 3 -r tr,oht. `I r_--C; tm, at-. r.be hr =p=le,p r h,cast side earth Of Without
. tl„„ti_ i r r of I nine 1 #r it I (t:4ikU rhF r,gyth rt tr rr,5 ,,,r}r33 i4i} ~ rx r 3 x r fly:.
l rjy2c, Formattem Fnntmror Bl1m
Regarding the formation of the Spit at the east side of the Jetty, tDD's opinion is that sand is bound to Formatted ;aynli4n
accumulate there as a result of the easterly Recent drift nunngthis time, the sand that would.
otherwise bypass the Inlet to arrive or the easterly beacti is diverted by the desserts rotating eddies
that form to the eavfirf the Jetty. !Once the Spit is fully matured, it reaches a dynamic equilibrium and
the eddy currents dlrninish, restoring the easterly Wdimeat drift. EDD does not believe. Chat the Spit
Final Recommendations and Action Dian,
Goldsmith Inlet
plays a role in regulating flushing within the Pond, with the exceporch of the possible risk iassraci ord with
storms relocating inland the large reserver o`sand that fire poised sitting moutb of the €hartnel nr C.e
i ~t...Ifl _Ira x'dVQ-xi t,cu'isv it b Ite d Wt If '.III a t[i, I:
'A ween ~"v,P.h};h
TIs s ctoti ncu die. that f, mtomg d.t f,t, r_zri}do redIC, t1_o mm isnr r,
I 1,0j trf , II aRtYrrxl t i r 3i
Fag, FiUC of `f a s iiuherl' crc c 1 tnc or pl~cir c and over it and planting
I i.r,i,i:' x .1i.r (,••,o:. sr rr r.,Kr ?rx s;~,rt. # rtxn ]r 1..iiea} ,r,fr , I (ni,.,in, s v i~ liaxrc• It.xcT
1 t<rm~ wrr Nnr t ,.su s', usr ld th"i s vi O tger for n it sano.us akr • t ir_we 'f'd sideOr
r ,<.:v..het, r',ij ir, per an if ir)t„nt,ajet
i
In summary, ci matic conditions and heavy storms areilkely the dornlnant cause of sediment reaching
~h e Inlet sy~tem, and these storms can sign: flcantiy alter conditions in the Channel. These conditions,
once altered, will change the net behavior of the Channel in an unpredictable fashion, resulting in
periods when sediment is flushed out of the Channel and periods when it Is flushed In. It was not
possible to discern any specific connection between wind direction/speed and deposition rates.
The options formainta,ning conditions at Goldsmith Inlet and improving water quality within the pond
are numerous and the r relatvecosls, benefits and risks are complex. In addition, there exist a number
of influences and consecuences to the Inlet maintenance program that are external to the rot itself,
b=_n potentially represent a real rupact m, Preighbming residents and habitat. Furthermore, climatic
cons ions and average sea levels are predic':ed to change in the coming decades, potentially altering
tie steady state behavior and geometry of the Inlet and its influences. To assist the Town of Southold in
making dar sions about how to best spend limited resources m maintaining the Inlet, EDD has prepared
an Options F.iatrix shown n'able ? The Matrix lists ten options to proceed, several of which are not
mutually exclusive, and to the best of our ab'..lity describes the benefits and risks associated with each.
Several of these optonswere not contained within the scope-of-work for this contract, but have been
included because of strong interest tram residents. The cost ranges provided are estimates only, and
will have to be better ex.plisi as the options are pursued.
Final Recommendations and Action xlans
Goldsmrth Inlet sto-. r P
FDD'%own reco nmenda trans, based or, the resin's of our research and2he expertise of Dr. Richard
Woggel, in<,udrthe follc ing procedures andprotoco's for enhancm; flushing between the Pond and
the Souno while protectrnU the dunes, embankments and shoreline ; he recommendations presume
that no char ge> vain be made to the eczy, and do oot-ake into account any assumption of climate
charge. The following practices should be performed annually, oiarnually, or on an emergency basis
depencing on the judgment of the T: wn and its advisers.
there are two areas of focus for intervention: the Sill within the Channel tdescribedas the high point
that. regulates toe rate of flow out of the Pond) and the Spit or "attachment flet' that forms to the east
of the Jetty:
A. Dredging the Sill
EDD's dredging 1ecomm mdations to the Town include a map a'tne Cnannel showing the aerial extent
anc depth of the recommenrl dredge based on the most recent thaiwegsu vey (see figure 12). This
figure can be submitted as the Town to the NYSDEC when requesting an amendment to the existing
permit. In fn eparatior for s.,cn dradging operation, FDD recommends that the Town first perform a ~ Formatted e,pi,iunt
thalweg survey der the protocol pros de in the a-,tacl•ed Appendix. The results of this survey will help
~dentrN the ideal location for dredg rig i esulting Ir 'tie, greatest improvement in flushing rates. Because
hathy;necr c condit ions w,t, In the Channel are always chaog;ng, new thalweg s.+iveys are required in ~ Poxroatted ,.o+,nnr t.
advance of ear o dredgr Jvh tnjJ _Lrr or morn or ieco ire?
According to tou recent iha,weg severs, and supported. by the results of the DYNLL1 modeling. FDD
recommerds ureoglirg at :he S 11 for a tista length c 4C0 `set (35 mown in Figure 121 with the goal of { Formatted ulghligi
loweringthe Channel floor by 12 inches.
i•tr "I; 6 .i6 - nt : t 1. i r .I;?} tE l Lo- ~s , ' >f t s • i 'X>.-'as
...l k 1. -1, ~r1 a+v,Ei .t.a,s ,s, t,.;, , v r , i....n.,i~+ t I I,.i , d 3-Ui 5.?f, vv n.at ,itlil iihrs elo,pa
,t,°-.~ tI",i,O dttif). ,.I i'^i!?1,1 psi,
B- lounging d)e. Easterly Spit at the Mouth of the Channel
.mom
f t is EDD's assertion that the formation of the Spit or "attachment fir et" at the east sidecif the Jetty is a Fnra+attetl i olaitii+t
nataralprecess FesuIt!ng from the so ate, rly littoral drift of sands in the Sound and the vortex that forms
Fina'. Recommendat'cns and Action Plans
Goldsmith inlet
'n the area ; ,mot--acts itr bytheletty. When the Spit is removed by dredging, thesystent leaves
its dynamic equilteriurn state and a:portion of the sand aabypaasimg" t• is they is shvertedfrom its easterly
course by the clockwise floc hi; eddy clnnents and deposited ear the mouth of the Channel until the
Spit is reformed The term "dynamic eqm ibrium:" gated because, while conditions are always.
! changing, they tend to do so tvithin a small range of parameters unless interrupted by eutteme evems'.or
human intervention m it ° •1 • sJ ,i ° hc( c_,,,_•, f,!_, ~5a I~resr-,•! 5 watt:' ,!s of
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Finial Recommendations and Action Plans
Goldsmith Inlet
xixx yr=::xxx.,
x I
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rt/4hile th,5 has our hnase pa=t of nun covi at,of•w'ak, EDD believes the€ dune e+G5ion today east call ea Formatted FIK}i}Iki £1
Imbase anoidad his atrend ng the hate of the more to protect against ertcreachorret frem: t!Ia Chan net.
This intent Iaa onaIn take several forms, the sif if plexA of which may he the nate of rlprap in inisim the same
way ini kett R d h.ttheen p£etwedl the area behind the ii rapcan also he augmented wilt, plantings
that ambili?ee thea€yaearahce and habitat €ciatctiwts. iF+asc 9esigns,witl o ed :o be Iacttda' $ttidied #f?.
know their e€hcacy,...
fhr..5 t:( it3I # I( £t„?, n : J'I:U¢ti, e i lnid d iii I I901b, 1 ibt. I': Vet i i I t I'>,tut.
C, Permitting
The dredging permit Issued by NYSDEC limits the Town to a window of time tw.k winter•betwoon.
: October 1 aid l.rnusry 14 fo, dredging within approximately 250 feet of the shoreline',
While the NYSDEC pennit issued in s00;' ;012 specifies `00 feet of the existing Channel, the
drawings and images provided inthe permit cover a total ll.. dredging length of approximately 400 feet.
EDD is not clear of NYSDEC`s intent in this.
Final Recommerrdati0n9 and Action Plans
Goldsmith Inlet v
EDD's research concludes that the flt skiing rate n tre Pond is limited riming ebb flow and is regulated
by the Sill that forms in the Channel lust north of the flood shoal. From our field measurements
performed within the thalweg of the Channel, we have located the sill at a Immt beyond the dredge
limits of t'na existing pe n it =DDre+ornmervas that the results of this Report be used to appeal to the
DEC for a revision to the pemmt that allows for an extension of the dredge area. The following
assertions snould be made by the Town in requesting a permit change, demonstrating minimal
additional effect on habitat;
Sediments a o ip; :Fie Pohl e course of the Channel and extending south to the end of the
flood shoals are coarse and largely flold, and are likely not stable enough to support henthlc
habitat
it has beer found that deprs Jonal. patterns in the Channel are bush that it is neCessary to
remove sediments from further south than the permit currently allows in order to improve
f.ushing conditions between the Sound and the Food. Improved flushing is key to Improving
water quality and establishing. more robust habitat opportunities within the Pond.
3. Equipment operators wilbe able to largely avoid damage to the Channel banks and the
vegetation sustained there.
4. Dredging will be performed only when the tide is low and the Pond is emptying, thus
c:arrying any suspended sediments out to the Sound rather than in toward the Pond.
D. Addh ona.. Recorrmendations
The thalweg survey protocol (see Appendtxj is recommended for performance annually or biannually in
order to inform the suosequent drerge. However; the Inlet Is a highly dynamic system with bathymetnc
r cameos to the Channel occurring both on adalIV dreg-Pmental) basic and as a result of high energy
climatic events For this reason, in order to better understand the Inlct's behavior in the future, EDo
also recommends periodic monitoring at the Inlet performed with greater frequency. The thalweg
measurements orovide a snaosnot of the Channe' conditions atone point in time, and the subsequent
dredging operation is configured based on that snapshot. In order to confirm the efficacy of these
mtervenl it wl I be necessary to perform the thalweg survey again in the spring, and. perhaps once
more du+ ng late summer or early autumn. These monitoring practlces.should continue for a few years
untl~ it has become clear hat sediment does not simply return to the same location in a short period of
time, reversing the efforts of the previous dredge.
Final recommendations and Action Plans s
Goldsmith inlet
la addition to periodic monitoring in the Channel, EDD also recoinmeuds that the Town consider
per for inl ng some further bathymetric studies of the flood shoal to delermine its size and extent and to
assess changes overtime. The monitoring could be. conducted rinar llyor with modern techniques for
bathymetric surveys that em pIoysorrar systems that do not requne researchers to enter the water, and
can provide accurate roeasurement, m a short period of time.
Mill the following were not part of this scope-of-work, EDD reason inends that the Town aISO look
up stream to evaluate sources of nutrients and fecal colifonn that are arriving In the Pond. These
sources could be farmer or existing livestock facilities, septic systems, agnarltural Runoff, broken sewer
or illegal damping, and could be rnteringthe Fond through drainage culverts, surface runoff or
groundwater. Also, because the Inlet is partly sustained by inffowsfrorn upland sources contrlbutingto
the pond, enhancing those infIows wrllserve to increase the difference in average elevations between
the Pond and the Sound. As that cliff erence Increases, the forces driving outflow train the Pond to
thriSound also increase, thus better sustaining the connection aad in creasing discharge velocttle.s.
Finally,. FED would like to make clear that these recommendations do not. sustainably address the
c ondihons lhat lead to sediment accumulation Within the Inlet system, but are rather part of a regular
nl a inter a ace program that is Intended to restore flu5hing conditions Ora temporary basis; Iin king fine
long-term risk of water anaIity color oration and potent! aI ChanceI Closure, These pracoces do not
address the causes of sedialsol lort, rtor do they prohlbk material from entering the Inlet. El
occiannendaboas are intended as an intermediate step to determine in g canin detaiI the Rose it able
and direction of long-term sediment transport,
,In EDD's as any discussions with the Town's representatives, the Town has acknowledged that a large. (torrr,attea rirghllanr
capital ho provnme rt.(Iin aitering it addling ajramr)would regaire mare st tidy, more model mig and
performance of a fulll'Envirarrmental Impact Study, and has deemed that It would be worth investigating
this alternative maintenance-hased mange to rjcedure, as long as it can be demonstrated that the
procodure 15 effective;
t 1
f} ..f.}}{..: (t11C ti - 3 ~I 1 1 i#til, l"il eior~l-id 1..
nnal Recommendations anti Ad ion Plans
Goldstrith nlot
APPENDIX- Assessing the Location of the Sill
EGD recommends the following. protocol far assessing and crocking the area of the Sill.
A. Assessing tha l.o enee of the $11 - fhaiweg wells ~ Formatted Iahde
;I ,w. nl;i I r it.e. t+t. i . t+ .r rir .h.. ~7 zirev ; t. ~F. I it=•,.i lzln t t !r01 t r t pi£5 a r. Formatted ardent raft0.75", Nu Uullstsot
t u nto 1. e£ 3
z t
ril - €C IP di`e Pr , + F V)0;,, ,c£"t'
-
I !rzri,il?n i 7 ! : : z+ v # re., zzl, tl}?:I.:!z!,.tl+;!,., ft+tl l it r I cl#+!+t+'r' I;i
.tr
1. This resslows tedr3iea the tale of two surveying rods, one heated and tr", and three
personnel (Sraveyrar, V iaderl and %Sradwr2), This sweet, is beat performed while the tide is
loan.
2, The innerly shall be set level at a owns, viable to the entire Is r dh of the Channel.
3, TIS- a 5k! hi•k tine rserween tote fads 5e tot:it ones rea oh tell few stows.
a. waded shall Login at 'a convenient: holes in the 6haatnol approdollial y idol feet soutoof
thu fine hartwo by exteatding Sound Avenue. Shot, to entering the Channel,:? Nadel S shall:
pant a Trial k on the ter up wall protecting talk Road, marking the point ad;ac nt to where:
tie su,van, shoo If feasible, a mrare porev nano tearker shall he inscaged .
* 'ANaeerl shalt locate lie they beat of their ability; the deepest point to the Chan=eel at that
louration.. Once th:v acing is Ioeatack W adcrl shall :place the moss gray`s i od ahd signal to
Sjrv%lm to take a tepdirib 'his coca be Thalmot want l
fa, White Surveyor is taking a reading, 4±Audv2 shall pull this tirte taught and prose, it to locate
the deepest point in the Channel v+Itg ten feet to wua Lite Sough and plate heir rue. Tho,
shalt be i haiweg Pant. 2.
7, Once Surveyor has dlynarod that the reading Is complete, and ader2 has placed tits rod: at
rile next location, holderI shah walk south and place their rud:at Tradwe$ Proud, 2. Weekly
may thersroitaovetheiered and reaseed another ten feet shark. Manc ul shah signal te.
elevely r.to taken neadua&
a. Ttllsptse#~isshallhoeapeateefsxTn!ttlmlrmt?fak7f5feetl+tCr~+etti!tgst. €ffeasible.:
tnnasurerands uses sentinels for a t£atWsoTOO to@t kod reaerbol. sneasurehteros should.
cease when, al The Colonel €losr erases to have art apparent "deepest rve(At' Thy is likely
Final Recommendations and Action Plans
Go'''..dsmith Inlet
K3c +3 ly„~-rrr
to occur in the whinny of the flood shoal, oe, hf Surveyor is nu longer able to make accurate
Qlaefirfie.
NOTES: f W',V.k the dtttenea betwddn Umlwe6 Points sh lutd fita tool hot, a few' ochos mostin or shorter
14h`: Ito# atte{'t tea tathl#y tM1 t Y,'. StJtvty. Also, at Semi 904AS ih. the Civau ei esTioatahy where the
Channel, m comes very WW L. th L.!amay be two Separate thalwelis va araiLtf byn sheaf or olound, If this
is desovaced, tload Ie2 Mould 'flake an effort to mitois IhP "deeper" or "largefi= ViaoNeg,: in the spi Vey?
I d, Assessing :he t.dcatitin of #he.S=tI Arapidool,a..naly rs
L Uyne a tpo'eadsheot tad, eiil one rolumh the eleuations recorded for each of the
Thalw•ee plenty:..
(roam a:"cle lee plot". Of these data suds that the elevations appear on the "Y" ask 141
M5bQw this should happen automedcally, and the X, a"ovauld correspond with the
point Ie s:
by inn eetiou, resale the point where the skme, of thy eurve, drops most limciprtoudy. The,
maybe difficult romecerh, betrah fie rrrade welorby shorten Igor Iengtheiang the width
of dye grhf nh, Start echo cite Q gh end Of the strut, anti follow. it along until it snakes a drop,
it may he melfw to hold a straight edge tithe travel and then Eddk for the Polar where the
curve starts to dropawas, bon, tire say. This =s die aptnolo our focation of ten del'.
a, tfse an ox!sting su~veY. ?r ~rsap to ItJ„ate Fla€wLa;:FLhtt 1 ar}d #tso Iota# ou pF the Sitl. It IAA
not affect tire ahahsi3. if a some L,!Ul is i'itroootod at Off jaernt. it may Im awful to use a
drrtir.F. g compass to aiptarel ianatc. Cecil ten-foot step along the.Vnxnoel,,:
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RESOLUTION 2012-557
1ZN1! ADOPTED DOC ID: 7991
THIS IS TO CERTIFY THAT THE FOLLOWING RESOLUTION NO. 2012-557 WAS
ADOPTED AT THE REGULAR MEETING OF THE SOUTHOLD TOWN BOARD ON
JULY 3, 2012:
RESOLVED that the Town Board of the Town of Southold hereby authorizes Supervisor Scott
A. Russell to execute aprofessional services contract between the Town of Southold and
eDesi¢n Dynamics to perform all studies and services necessary to complete a Bathometric
Study. Sediment Modeling and Sediment Management Plan in accordance with the Management
Plan for Goldsmith's Inlet dated June 19, 2012 at a cost not to exceed $66,900.00 subject to the
approval of the Town Comptroller and the Town Attorney.
6?
Elizabeth A. Neville
Southold Town Clerk
RESULT: ADOPTED [UNANIMOUS]
MOVER: William Ruland, Councilman
SECONDER: Albert Krupski Jr., Councilman
AYES: Ruland, Talbot, Doherty, Krupski Jr., Evans, Russell
THIS AGREEMENT made and entered into this _ day of , 2012, by and between
Town of Southold (hereinafter referred to as "Town"), a municipal corporation organized and
existing under and by virtue of the laws of the State of New York (mailing address: c/o Elizabeth
A. Neville, Southold Town Clerk, Town Hall, P.O. Box 1179, Southold, New York 11971-
0959), party of the first part, and eDesign Dynamics, LLC (hereinafter referred to as
"Consultant'), 338 West 30 Street, 10"' Floor, New York, New York 10018, party of the
second part.
WITNESSETH:
That the Town and Consultant, for the consideration named, hereby agree as follows:
1. PURPOSE.
The Town hereby retains Consultant, on the terns and conditions set forth hereinafter, for the
purpose of analyzing sand accretion at Goldsmith Inlet and the effects on water quality
(Bathymetric Study and Sediment Monitoring Report), and providing recommendations for
actions to remedy the existing conditions (Draft and Final Sediment Plans) to further support the
ongoing efforts by the Town to understand and rectify water quality issues at the Inlet.
2. SPECIFIC SERVICES.
Consultant will commence work immediately upon the execution of this Contract. Consultant
shall perform the following tasks:
1. Field studies shall be completed by the end of Spring, 2013 (Grant Task 4);
2. Bathymetry and Sediment Monitoring Report shall be completed and delivered to the
Town on or before June 1, 2013;
3. Sediment Management Plan shall be completed and delivered to the Town on or
before July 1, 2013;
4. Draft Recommendations and Action Plan shall be completed and delivered to the
Town on or before August 1, 2013; and
5. Final Recommendations and Action Plan shall be completed and delivered to the
Town on or before September 15, 2013.
The specific scope of work and information to be included in each task is described below.
The Consultant must ensure that all materials printed, constructed, and/or produced acknowledge
the contributions of the New York Department of State herein referred to as the "Department"
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and the County of Suffolk to the project. The materials must include the following
acknowledgment:
"This (document, report, map, etc.) was prepared for the New York State Department
of State with funds provided under NYS DOS EPF Contract 0007079 - Goldsmith
Inlet and for the County of Suffolk under the Agreement for Improvements to
Goldsmith Inlet (CP8207)."
The Consultant must submit to the Town all required products, clearly labeled with the NYS
Comptroller's Contract # 0007079, and the related Task # from this Work Plan and the County
of Suffolk Agreement CP8207. The Consultant shall submit:
• Draft products: two paper copies of each product.
• Final products: two paper copies of each product. In addition, all final products
(including reports, designs, maps, drawings, and plans) must be submitted as an
electronic copy (in Adobe® Acrobat(& Portable Document Format - PDF), created using
300 dpi scanning resolution, and be submitted on a labeled CD-R type CD. The CD must
be labeled with the consultant name, contract and project title.
Grant Task 4: Bathymetry and Sediment Monitoring
The monitoring proposed will be performed in coordination with the tidal prism monitoring of
Task 1 of the Grant, to allow for more thorough integration of the scopes of work performed by
Cornell Cooperative Extension ("Cornell") and the Consultant and will result in a more
quantitative understanding of the morphological processes within the Inlet channel.
Consultant will perform a series of bathymetric studies of the Inlet channel, identifying 12 fixed
channel sections to be measured and recorded at four separate times between Summer 2012 and
Spring 2013. These measurements will describe the actual changes that take place within the
channel, corresponding with seasonal and climatic changes. Consultant plans to take one set of
measurements immediately after a high energy storm event to document the short-term changes
in the channel that result. These data will be synthesized to provide an understanding of the
processes and events that lead to geometric changes to the channel under current conditions.
Deliverable: Bathymetric Study and Sediment Monitoring Report
Grant Task 5: Sediment Management Plan
The work in this Task involves identification of the likely extent of sediment contributions from
marine sources.
This effort will be paired with the work performed by Cornell in Grant Task 1 and the Tidal
Prism/Flushing Rate Analysis. Cornell will be placing water level loggers in LIS and within the
Inlet to perform a volumetric analysis of marine water contributions to the flushing of the Inlet as
they vary with tide, season and climatic events. For the entire period of observation (and
relevant subperiods like daily tidal cycles during neap times, daily tidal cycles during spring
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tides, etc.), Consultant will correlate periods of net marine sediment loading with marine
flushing. Consultant will determine the net movement of sediment into and out of the Inlet vis-a-
vis the tides at the mouth of the Inlet, and identify high net sediment loads with climatic events
and tidal conditions.
Consultant will review and consider the existing literature along with the history of interventions
and local experience at Goldsmith Inlet. Consultant will identify historical photos and aerial
photos to determine the extent of the sedimentation problem within the Inlet, along with changes
to the morphology of the coastal dunes and channel. Existing documents include: "An
Assessment of Jetty Shortening Alternatives, Goldsmith Inlet, Bay, and Adjacent Shoreline,"
September 2005; "Evaluation of Downdrift Shore Erosion, Mattituck Inlet," April 2006;
"Geomorphic Analysis of Mattituck Inlet and Goldsmith Inlet," July 2005; "Historical Shoreline
Change Analysis: Western Town Line to Horton Point," September 1998; and "Physical
Processes Study of Goldsmith Inlet," 2007. Consultant will summarize the findings of past
research, and utilize the findings in preparing the subsequent recommendations.
Consultant will locate high quality local climate data, specifically wind data, to perform an
analysis of wave energy and direction as it correlates with specific storms and conditions. The
wave analysis will provide insight into the processes that govern the movement of coastal
sediments and their disposition at and around the Inlet.
Consultant will, by means of a number of reasonable assumptions, identify and rank the primary
causes of sedimentation within the Inlet in an effort to distinguish the influences of tides, storms,
wind, jetties, dredging, beachside construction, beach restoration, etc. Consultant will generate a
description of these processes and seek to quantify their relative contribution to the sediment
loads seen at the Inlet. Consultant will utilize the hydraulic studies already performed for the
Inlet, and consider several possible channel geometries to model the potential of such channel
geometries to remain stable while promoting improved Inlet flushing.
Based on these findings, Consultant will prepare a set of recommendations that consider relative
influence, cost, and probability of regulatory approval and technical success.
Deliverable: Draft and Final Sediment Management Plans
Grant Task 8: Final Recommendations and Action Plans
Consultant will collaborate with Cornell researchers and the Town to prepare a comprehensive
report focusing on the results of the findings from Tasks I through 7 of the Grant and the scope
described in this document, and will generate a list of self-consistent recommendations for future
intervention at Goldsmith Inlet. The Report shall describe for a layperson's use the processes and
consequences occurring naturally and as a result of human intervention. To the extent that it is
scientifically possible, Consultant will quantify the reduction of sediment from the Sound for
different proposed measures and channel geometries.
Although this scope does not include a quantitative analysis or identification of upland
contaminant sources, Consultant will prepare a qualitative discussion of potential "source
-3-
control" measures and describe the possible extent to which controlling these sources may
contribute to water quality improvements in the Inlet. Consultant will elaborate on the set of
recommendations developed in Task 5 of the Grant and develop a "decision-making matrix" that
will include some cursory cost estimates of these options for intervention, degree of difficulty for
regulatory approval, and an assessment of the probability of technical success.
Finally, Consultant will identify a single "recommended course of action" that will include
milestone goals, action items, cost estimates, and timeframes for implementation of the design
and construction of the preferred intervention strategy at Goldsmith Inlet.
Consultant and Cornell will present the Draft Recommendations and Action Plan to the Town at
a public meeting, and shall respond to questions regarding the interventions proposed. The
Consultant will also prepare the Final Recommendations and Action Plan which shall respond to
comment on the Draft. Consultant will present the Final Recommendations and Action Plan and
related materials during a second conference call and at a second public meeting.
Deliverable: Draft report for comment; conference call to discuss draft report; public meetings
to discuss interim findings of draft report; final report for comment; conference call to discuss
final report; and public meeting to discuss and recommend action plans.
3. EXTRA WORK AND CHANGE ORDERS.
If, during the term of this Contract, Consultant determines that extra work that is beyond the
scope of work described in paragraph 2 herein, which would increase the payment contemplated
in paragraph 5, a formal Change Order must be in place. A copy of the Change Order Form is
annexed hereto as Exhibit A. If the proposed Change Order results in an aggregate increase that
is less than $1,000, it may be approved solely by the Planning Director.
If the proposed Change Order results in an aggregate increase of $1,000 over the agreed-upon
consideration in paragraph 5, then the Change Order must be executed by the Planning Director
accompanied by a detailed explanation from the Consultant of why the Change Order is needed
and submitted to the Town Board for consideration and approval by resolution. The Change
Order must also be approved by the Town Comptroller and the Town Attorney. Only after this
procedure is completed may the Consultant go forward with the extra work.
4. TIME AND ATTENDANCE; COOPERATION BY THE TOWN.
Consultant shall perform the services described herein and attached hereto in as expeditious a
manner as is reasonably possible and with due consideration of the time requirements of the
Town and goals established in the New York Department of State EPF Contract 0007079 and
the County of Suffolk Agreement CP8207. A copy of these Agreements are attached hereto as
Exhibits B & C, respectively. The Town recognizes that the timing of the performance of
Consultant's services may be affected by previous commitments to other clients (including the
delivery of promised services and work product and previously scheduled meetings), and
situations normally and traditionally deemed to be matters influenced by the weather, strikes, or
power outages.
-4-
The Town agrees to cooperate with Consultant, as needed, and to provide Consultant with copies
of any records, documents and other information needed for performance of this agreement on a
timely basis. The Town further agrees to provide Consultant with access to appropriate officials
and/or employees of the Town, as may be needed in the performance of the agreement.
Moreover, both parties understand and agree that mutual accountability and responsiveness is
critical to the successful completion of the project, and therefore both shall always use their best
faith efforts to be accountable and promptly responsive to each other.
5. COMPENSATION.
In payment for the services to be performed hereunder by Consultant, the Town shall make
payments to Consultant as follows:
(a) For the services to be performed by Consultant pursuant to paragraph 2 hereof, the
Town shall pay Consultant the sum of $66,900.00 dollars. Payments shall be made monthly and
shall not exceed the amounts set forth for each Task below:
(1) Task 4: Bathymetry and Sediment Monitoring $20,700.00
(2) Task 5: Sediment Management Plan $22,600.00
(3) Task 8: Recommendations and Action Plan $17,200.00
(4) Sub-contracting services of Dr. Richard Weggel $ 6,400.00
of Drexel University
Consultant shall send the Town a signed voucher for such compensation. Such voucher shall be
due and payable within 45 days after receipt of such voucher, but such sum shall not be due and
payable by the Town until the Town Board of the Town has received such a voucher and has
audited and approved for payment the signed voucher to be submitted by Consultant in
connection therewith.
The Town Board shall process any vouchers received from Consultant as expeditiously as
possible.
In the event that the Town disputes or objects to any portion of any voucher submitted by
Consultant pursuant to this paragraph, the Town shall, within 30 days of the receipt of such
voucher, notify Consultant in writing of such dispute or objection. Consultant
acknowledges that Consultant is familiar with the requirements of section 118 of the Town Law
which, in effect, prohibit payment of any of Consultant's claims against the Town unless an
itemized voucher therefore shall have been presented to the Town Board or Town Comptroller
and shall have been audited and allowed by the Town Board or Town Comptroller.
All Vouchers shall be submitted by the Consultant to the Planning Department.
6. TERM OF AGREEMENT; TERMINATION.
This Agreement shall terminate on September 30, 2013, however, this Agreement shall
terminate immediately in the event that (a) Consultant dies; (b) Consultant incurs a disability
-5-
which makes Consultant unable to perform the services which Consultant is required to perform
hereunder; (c) Consultant files a Petition in Bankruptcy Court or a Petition is filed against
Consultant in Bankruptcy Court, or Consultant is adjudged bankrupt or makes an assignment for
the benefit of creditors; or (d) a Receiver or Liquidator is appointed for Consultant and/or
Consultant's property and is not dismissed within 20 days after such appointment or the
proceedings in connection therewith are not stayed on appeal within the said 20 days.
In the event that Consultant refuses or fails to provide the services required hereunder with
due diligence, or fails to make prompt payment to persons supplying labor for Consultant's
services hereunder, or refuses or fails to comply with applicable statutes, laws or ordinances, or
is guilty of a substantial violation of any provision of this agreement, the Town shall send
Consultant written notice that Consultant has 20 days to cure said default; and if, at the end of
said 20-day period, Consultant has not cured said default, the Town may then terminate this
agreement on 7 days' prior written notice to Consultant.
7. SKILLS OF CONSULTANT; CONFLICTS OF INTEREST.
Consultant represents that Consultant has the requisite skills and experience to perform the
services hereunder.
8. INDEPENDENT CONSULTANT STATUS OF CONSULTANT.
Consultant and the Town agree that in the performance of Consultant's services hereunder,
Consultant is an independent consultant and shall not be deemed to be an employee or agent of
the Town for any purpose whatsoever.
9. PROHIBITION AGAINST ASSIGNMENT.
Consultant is hereby prohibited from assigning, transferring, conveying, subletting or otherwise
disposing of this agreement or his right, title or interest in this agreement.
10. COMPLIANCE WITH STATUTES.
Consultant agrees that Consultant will comply with all statutes, ordinances, local laws, codes,
rules and regulations which are or may be applicable to Consultant's services, activities and
duties set forth in this agreement.
11. NOTICES.
Any and all notices and payments required hereunder shall be addressed as follows, or to such
other address as may hereafter be designated in writing by either party hereto:
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To Town: Elizabeth A. Neville, RMC, CMC
Southold Town Clerk
PO Box 1179
Southold, NY 11971-0959
To Contractor: eDesign Dynamics
338 West 39"' Street
10"' Floor
New York, NY 10018
12. WAIVER.
No waiver of any breach of any condition of the Agreement shall be binding unless in writing
and signed by the party waiving said breach. No such waiver shall in any way affect any other
term or condition of this Agreement or constitute a cause or excuse for a repetition of such or any
other breach unless the waiver shall include the same.
13. APPLICABLE LAW.
This Agreement is governed by the laws of the State of New York.
14. COMPLETE AGREEMENT: MODIFICATION.
This Agreement constitutes the complete understanding of the parties. No modification of any
provisions thereof shall be valid unless in writing and signed by both parties.
IN WITNESS WHEREOF, the Town of Southold has caused its corporate seal to be affixed
hereto and these presents to be signed by Scott A. Russell, its Supervisor, duly authorized to do
so, and to be attested to by Elizabeth A. Neville, Town Clerk, and the Consultant has caused its
corporate seal to be affixed hereto and these presents to be signed by its President, the day and
year first above written.
Town of Southold
(Seal of the Town of
Southold)
By:
Attest: By: Scott A. Russell, Supervisor
'.CQ: .aoDo~
Elizabet . Neville, Town Clerk
-7-
eDesign Dynamics, LLC
By:
Enc Rothstein, Managing Partner
STATE OF NEW YORK)
w `}V-I9) ss.:
COUNTY OF V;Agp
On this/,day of , in the year 2012, before me, the subscriber, personally appeared
Scott A. Russell who, be' by me duly sworn, deposes and says: That he is the Supervisory of
the Town of Southold (the "Town"), the municipal subdivision of the State of New York named
in and which executed the above and within Instrument; that he knows the seal of said Town and
that the seal affixed to said Instrument is the seal of the Town; that it was so affixed by the order
of the Town Board of the Town, and that he signed his name thereto by like order;
And on the same day before me personally came and appeared Elizabeth A. Neville, Clerk of the
Town of Southold, who, being by me duly sworn, deposes and says: that she is the Clerk of the
Town; that she knows the seal of said Town; that it was affixed to said Instrument is the seal of
the Town; that said Scott A. Russell is the Supervisor of the Town and that the signature on said
instrument is the signature of said Scott A. Russell, as Supervisor.
I Notary is
l MICHELLE LL LLE L. TOMAS2EWSIt?
STATE OF NEW YORK) NOTARY PUBLIC-STATE OF NEW YORK
SS.: No. 01706156671
COUNTY OF M.~6 Ouallfled In Suffolk County
My Commlabn dviHl NOWfflbN 27, 2014
On the day of 5 W- in the year 2012 before me, the undeligned, a notary public in
and for said state, personatt~ appeared t At c t- - aa*51`61 r~ , personally known to
me or proved to me on the basis of satisfactory evidence to be the individual whose name is
subscribed to the within instrument and acknowledged to me that he/she executed the same in
his/her capacity and that by his/her signature on the instrument, the individual or the person upon
whose behalf of which the individual acted, executed the instrument.
Notary Public
®aroi J. Burton
NOtr Public,5tate 01 New York
Ne. 01 Frfl6126M
-8- r iziifiecf in Kings County
Commission Expires May 16, 2013