Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
09-38W Application Sand Hill Road Reconstructio
RECEIVED DEC 16 609 TOWN OF SOUTH WINDSOR SOUTH WINDSOR PLANNING DEFT. INLAND WETLANDS,WA COURSES AND CONSERVATION APPLICATION Application# Date Received INSTRUCTIONS 1. Fifteen applications(15) with map and plans (2 copies) shall be submitted together with the fee set forth in the Inland Wetlands, Watercourses and Conservation Regulations, Town of South Windsor. (See Regulations, Section VII—X) 2. The South Windsor Inland Wetlands, Watercourses and Conservation Regulations should be reviewed with respect to the standards and criteria for application Evaluation. (See Regulations, Sections VII-X) 3. The applicant understands that this application is to be considered complete only when all information and documents rewired by the Agency have been submitted. The applicant shall also complete the state filing form. A. Applicant's Name: Mr. Jeffrey B. Doolittle, Town Engineer Address: Town of South Windsor, 1540 Sullivan Rd. , South Windsor,CT 06074 Phone: (home) (work) 860-644-25ll (fax) 860-644-7280 B. Legal owner's name: Town of South Windsor 06074 Address 1540 Sullivan Road, Engineering Dept. , 06074 Phone(home) (work) Same as above fax same as above (List additional owners,addresses, and phone numbers on back of application) C. If the applicant is not the owner of the subject property; a letter by the owner(s) authorizing the proposed regulated activity set forth in the application must accompany this form and will be part of the application. D. Project Name and Location Sand Hill Road Re,cx)nstruction Project 1. Contact Person(if further information is needed) Mr. Jeffrey Doolittle (work} 860-644-2511 (fax) 860-644-7280 E. The geographical location of the property which is to be affected by the proposed regulated activities including a description of the land in sufficient detail to allow identification of the property on the Inland Wetland and"Watercourse Map. Assessor's map# N/A Parcel# N/A Zone N/A See attached map - Figure 1 7 F. Names of all abutting property owners from records in Town Clerk's office. -(use separate sheet if necessary) See attached G. Have you notified all abutting property owners(from records_ in Town Clerk's office)by certified letter that an application is pending before the Agency? yes (you are required to supply a copy of the letter with the list of the names of the abutters)." H. Purpose and description of all proposed regulated activity(s)including amount of disturbance in square feet and types of fill and the time element involved: See attachment (A) for H-N below I. A class A-2 map of the property drawn to 1"=40',showing the area to be developed,extent of the wetlands and watercourses affected, topography, existing and proposed activities and names and locations of adjacent property owners must be submitted. J. Amount of regulated area disturbance and types of fill (including wetlands and 80 foot Upland Review Area). K. Acreage of wetlands and watercourses in regulated areas to be altered: L. Acreage of wetlands and watercourses to be created: M. Lineal feet of proposed stream alteration: N. Total land area of project and percentage,which is wetlands: O. Identify all other permits or approvals that have been issued., applied for, or required with respect to the proposed activity set forth in this application. (These may include but not be limited to, local Planning& Zoning,Zoning Board of Appeals, D.E.P., F.E.M.A., D.O.T., The Army Corps of Engineers, and any other State,Local or Federal Permits.) TBD P. The applicant (or designated representative) hereby attests that a sign will be posted at the following location(s) Sand Hill Road Re`construction Project By South Windsor Name Mr. Doolittle on or before the following date Ten days prior to meeting date 8 Signature: These signs must be displayed continuously for at least ten (10) days prior to scheduled meeting (see Regulations, Section 7.3a) - The undersigned hereby applies for the regulated activities listed in paragraph H above,for an Inland Wetlands, Watercourses and Conservation permit for the property described herein and confirms that: 1. She/he is familiar with the currently effective Inland Wetlands, Watercourses and Conservation Regulations of the Town of South Windsor. 2. She/he understands that at any time during the review period, the Agency may require the applicant to provide more information about the wetlands and/or watercourses in question and/or any proposed activity. 3. All information submitted in -the application for review shall be considered factual, or in the case-of anticipated activity,binding. A knowing failure of the applicant or any of her/his agents to provide correct information, or performance exceeding the levels of activity anticipated, 'shalt be sufficient grounds for revocation of any permit under these regulations. 4. By making this application, the applicant gives permission to the Inland Wetlands, Watercourses and Conservation Commission members and/or its representative to enter the portions of the premises which are subject of the application for the purpose of inspection and investigation and otherwise evaluating the merits of the appli bth befor final decision has been issued. Signature of O er of Property Date Sig tore of App can Date 1?r(l��U �► 9 �f� � t. ) iy��C�»�r�� '��yS� i �vs��Q'a', " ? j���3 ��' YF e s •s +�' ; � I ' y _� �j��=7.�r R`+;is.41 f '!""q�•i`",iY•3-`� •1, i _ .0 i i — - e tie -�r` -«3 t ♦ - �e5_ *r+sl•``'• I° i4,ti �B-. t$r ��A 1 ,� ��j�! �; :'1•. as 3Y. ya. S�f,•t S 0 S to r{ ,r_ `: � •'^ a .J,rr���?�� �., v��� ' '. 5•�,.X - tzrl±'•ye����. P w �,,t� +t`", � +t `+a.<t..r t i F �Z�i• i`` I,r�' �, �,} 7i"A A �� � I,sr „y,�n*n"F°^ .•_ , f {t� Tt s.{°�`�� F�` •I.t ..': 4 �.4#�{�}��l�r���a EtjhuCe�yJf� � ll xky..t �.L` a� v'rl��f`�f� ����+f %§ + } rhu ��?• 16 a ? t�Mat t'iSs fL � ' S -. t'� � �a� a��te+w. tab.,,�;° � `S•'f�'4 ±u�'.. ��. �?� �x�,�� � I �• it.� � � --. !"`- '�rr11 "'✓�'a46t'�_zt`: 4r, �� .e��'�.• r I a e r.J' � i�iL4� (sue 1's'�,f a:F, '�,•w.f� + r♦}r/t�{�by'/� '�i�4j_ � �• �, � (FtS( i 'S. .*'mat P � S r -S4 $:_a '�,. <'1rrs I;••i! r�ayx.� r ��-ysr��� �c Y rf/( t,.� (} ,�� 'gi y.. f' � s'� ' -i D. .\,_ �IQ k:'�S� 5p.i'.. f i l:'c•�• 7 �r `h£�°4 ,. '. f,.e fir, ar y �j w� _1� t ,.r � o '�;'+ �•"� . . ii4 a'-'w'. � ��• tzS' �Y,��!''`*.«v4 M1 t7*t:, T j�.�`:'*'- .:;Y_-. S `'4 ® T. ) , }a t;4 r ���3��•v.'4Fj �.E Y}t at '4i it Ulf r^ T1F'.f, j `�r ✓/� Ay�j11'"f ,sr� .r�+� �, r �.�'� pad L, t .if � \.. ->r.r. 1�1i..`,.. � ��T �.�t. � t;.��rr w � •�' r¢ +.���'+ e .'r'`� C\rSs ` P,r. e IIlA S y a L 9`,•.•, �� ��;11r ��J�i t41tI#l�7 � i '✓�H4.i7`-+a��,�r�<r�i���, •_� `��,� � F_ly' �� �l'a�j,r�1Gk����f�')i •f(�,• '' �i �''�r�hY'�;"i s1.w1�4.�� K" q fi 5 4�NT 1 1 � •1 ' ,`��.�xamn• ! � �e `� ,I 1, , I S LOCATION: SandHill Road RehabilitationProject Southa e B Realty B a DATE: Cheshire,Connecticut Io• i B t•° , December 0 I Location 1 „ I , SOURCE: 1 III ATTACHMENT A Sand Hill Road Reconstruction Project South Windsor, Connecticut MMI#2186-10-3 December 15,2009 This attachment details information required as part of the Inland Wetlands Application, Sections H through N. The Town of South Windsor has identified the entire length of Sand Hill Road(approximately 3,300 linear feet)between Sullivan Avenue(Route 194) and Ellington Road(Route 74)for complete roadway reconstruction and rehabilitation. No improvements to the intersections with Sullivan Avenue and Ellington Road are proposed. The existing pavement surface and the underlying base have deteriorated to the point where full-depth reconstruction is required to restore the roadway surface. Reconstruction will include 11-foot travel lanes with new bike lanes in both directions,new curbing, minor drainage improvements, and new driveways. Proposed improvements include replacement of a cross culvert of the Plum Gulley Brook tributary and outlet improvements upstream of Plum Gulley Brook. There are two cross culverts along Sand Hill Road. The first is a 3'x 6'concrete box culvert that conveys Plum Gulley Brook under the road,and the second culvert is a 2.5'x b' corrugated metal pipe that conveys an unnamed tributary of Plum Gulley Brook. Wetlands and watercourses along Sand Hill Road were flagged by Mr. Jeffery Folger, Certified Soil Scientist and Environmental Planner for the town. The two watercourses were flagged and are illustrated on the site plans. Regulated activities have been subdivided into Regulated Activity#1 and Regulated Activity#2. Regulated Activity#1 Regulated Activity#1 is located at an existing stormwater outfall south of road station 21+00, where there is erosion and undermining at the outlet. The proposed activity consists of the creation of a two-stage modified riprap plunge pool upgradient of Plum Gulley Brook to stabilize the outfall and stop further erosion and undermining. There are no direct wetland impacts associated with this portion of the project. The plunge pool system has been designed to dissipate stormwater velocities so that suspended solids (such as road sand) can be filtered before discharging into the brook and for future maintenance by the town Department of Public Works (DPW). All disturbed areas within the regulated area will be stabilized with seed or riprap as necessary. The construction of the plunge pool, grading, installation of sidewalk, and repaving of road disturb approximately 0.178 acres (7,769 SF) of the regulated upland review area. SAND HILL ROAD RECONSTRUCTION PROJECT-ATTACHMENT A SOUTH WINDSOR,CONNECTICUT DECEMBER 2009 PAGE 1 ���MILONE&MACBROOM` Regulated Activity#2 Regulated Activity#2 is located at the existing CMP cross culvert between road stations 31+00 and 32+00. The proposed activity includes cleaning of sediment from the existing channel,the replacement of the existing cross culvert, and the construction of a preformed scour hole. The cross culvert conveys an unnamed tributary of Plum Gulley Brook. This activity has a direct wetland impact of approximately 0.028 acres (1,202 SF) and a stream alteration of 70-' linear feet. The preformed scour hole is proposed to help dissipate velocities within the stream and allow suspended solids to be filtered before being carried further downstream. This new scour pool will also allow the town DPW to readily access this pool for maintenance. The existing trees and shrubby vegetation including the ornamental plantings are proposed to be protected during construction. The construction of the scour pool, replacement of cross culvert,relocation of catch basins, and-repaving of road disturb approximately 0.180 acres(7,833 SF)of the regulated upland review area. All disturbed areas within the regulated area will be stabilized with seed or riprap as necessary. The work will not commence prior to receipt of regulatory approvals. The culvert replacement work will be conducted during the summer months,and the duration of the project is expected to be six months. A temporary bypass channel will convey the watercourse while the new culverts are installed. A minor amount of dewatering is expected. The discharge location is depicted on the site plans. Erosion controls and temporary sediment basins will be installed in compliance with state and local guidelines. These details are included on the site plans and are described within the submitted water handling plan. Once the culvert has been installed,any disturbed areas will be stabilized with seed and/or riprap as necessary. Summary of Renlated Areas and Activities Disturbance to the regulated areas, in this case the watercourse and wetland,will be 0.028 acres (1,202 SF). Disturbance within Regulated Review Areas (Regulated Activities#1 and#2)will be 0.358 acres (15,594 SF). Area of wetlands and/or watercourses to be created will be none. Lineal feet of stream alteration will be 70 feet. Total land area of the project is 3.162 acres (137,728 SF). Percentage of total land area of the project that is wetlands and/or watercourses is 0.89%. 2186-10-3-d1409-1-rpt.doc SAND HILL ROAD RECONSTRUCTION PROJECT—ATTACHMENT A SOUTH WINDSOR,CONNECTICUT DECEMBER 2009 PAGE 2 ���MILONE&MACBpwow i • :� a � a � a a �'6 >tit f ••�•\ �y �('�r ,��s 4�' " I sir e • s i a,9 ' �,� Regulated Activity#2: Upstream side of Sand Hill Road Culvert (Sta. 31+50) Watland Area,(Sta. 31+5:0) —� Inland Water Resources Division Department of Environmental Protection 79 Elm Street,3r'Floor Hartford,CT 06106-5127 www.ct.gov/deg f z . Statewide Inland Wetlands &-Watercourses Activity Reporting Form Complete,print, sign,and mail this form in accordance with the instructions on pages 2 and 3. CART# TD 8+errtleted BarMunlc�pa :intand Wetlands Aenay7nfy . 1 DATE ACTION II�AS TAI< N(arse dre3poi>m bax) Fear MonthMEMMEM 2w ACTIQN TAKEN(use drop down boxy; h . IIVAS A P4�f 31.1G 1-lEA1311�lG DEL© seiecl ane only ❑ �'es .. Q Np ;.. : 4' NAM£OF A i l',QFFICIAL.UER1FYiNia�Ni3 CQIV#Pl 1f�1Ca Tl#1 FOR.... (pnrl# nature] PARS'll.To Be Completed Icy the M rttclpaf lnlarYd ltifetaands r4gencr The Ap{�licant 5> Tf3111/N IN V1th#IGN 1'HE}kQTIQN iS�QQI�PiRiN� Sclutla W�ndsc�r' Does fhfs profec#cross xni�nicipal:#�oundarles?(s�:lect ortrr only) � Yes � NO : 5 des;Irst tkte o#he<r tcrwn(s�irl�rhGh the�dttc>n is occurr�rg 6:' L.aOi✓ATIQN :: Q� ad lea me see erltrY>r Manok�ester uad Number(see h Yl3 Subreglonai ©ra�nage Bann Ntrrriber(see hyparinlj:.. 400a 7 NAi�ItE QF APPLICANT, /IflLATQR QR PETITIONER �leffery DoohtC(6,Town Ex>Igrr�ser � NAft�E&AaDRESSLLfl.CATIQN QF:RRQiEGT SITE Sand Hi11 Road. .�... :; ;. Brpefty deScnt)e the act}©nfproiectlactluit� [ �empora Permanent: Repave Viand HIIL Road ancF Impraue stormwat®r drainage structures and replace cutuerf within tributary of Plum GWI Brook. 9. ACTIVITY PURPi�Sf QQQE#ltse.,drop down box)..:; E �� ACTIVITY r�PF�QQ���}(�s�drop downbnx� �Q , 1� , 11: 1AlEl'LAND 111UATERCQURSE i4REi4 AIrTE.fiED.[must be;proulded in arras or Irnear feet as mdlaated) r Wetlands 0 03 acres Qpen Water i3ody acres �... Strearri � linear fleet 1' UPLAND F-E1/IEUIi AREA ALTERED[must tie provrcfed to acres 36 acres 1 AREA O1=WETLAMI3S;gN[JI QRATERCQWRSEfi RESfiQREI) ENHANCE© A CREATEt .;0 acres [must be pr©wdesiin acres Y DART Ilt To Be GQpieted:By The I�EP DATE RIrDEIVED DATE RETURNED TO.D.E.-P. ARM Ct3MPLETECT .Q YE5'- Q NO F`QRM 6QRREDTEE)1:O MPLETED DEP-IWRD-WM8-REPORT-001 Page 4 Of 4 Rev.09/22/08 mpf+ drt'a"�ri�i �►s6 ale r �� vvmm.eve*.Com MOCiOR IFEOIvJA ;DAMATO PETER J&DEBRA K ;:GIA,NGRAVE VIVIA.N B&SANTO 7 RE: 254 SAND HILL ROAD , '!RE: 269 SAND HILL ROAD : "R.E: 280 SAND k1&T ROAD 254 SANDHILL ROAD ! `j 268 SAND HILL ROAD - ' 280 SAND HILL ROAD SOUTH W114MR,CT 06074 : '.SOUTH WINDSOR,CT 06074 ; SOUTH WINI)SOR.C'166074 (JONES WILLIS G&KATHERII+IE ,�SCHUMANN JOHN K ESTATE ; ; DFSM�L CHARLE9.E RE: AND HILL ROAD RE: SAND HILL ROAD j ; RE: ELLII�IO ON ROAD 304 SAND EW L ROAD -1°292 SAND HILL ROAD 935 SIIItTT1.I3 MEAOt)" SOU M WIMSOR,CT-06074 € _ SOUTH WINDSOR,CT 06074 1;SOUTHINGTON,Q-T 06499 COLLMS CATHERINE S&HAGEDORN IMAODIg S,INC ; ADVANCE P OI'`T.R.TY 140TVA#` RE: 2A COLLINS LANE i 'E R& PARKVIEW SOUTH CONDOS RE: PLUM RIFT COOS 8 COLL114S LANE � � 635 FARM NOTON AVE 144 MAIN ST,UNIT M SOUTIi WIIriDSOR.CT 06074 _ ! HAZtIFORD,CT 06105 =�BASTJIt4RnYII4);CT 06109 CONN L10HT&POWER CO —- F P.ARRIS�I OF sT PETERS C1URC2I � CULL.CN^"a CA'1Hk.RtNE S 1_�it RE: ROM&L002 SAND HILL ROAD• RE: 99 SAND HILL ROAD '. : RE: I kD67 St jT J,I '�Izs 7?Y�►N . PO BOX 270 ; 99-109 SAND HILL RD 'j 8 COLLINS LA HAKTFORD,Cr 061410270 ;{SOUTH WINDSOR,CT 06074 i ' SOUTH WTND..M CT 00074 �WALDRON CYNTHIA C 1 !COLLINS DAVID B&DOROTHY A `7CG�bTE PR(3FtLg' 15 " RE: 1330 SULLWAN.AVEWUE RE: 78 SAND HILL ROAD RE: 2 C01JJN9 LANE 7$ SAND HILL ROAD 2 fWLL1NS LANE 1 ;=1330-50 SULLIVAN"AVE 1 'SOUTH WINDSOR,CF 05074 SOUTH WINDSOR,CT 06074 ;,SOUTH WDIDSOR,CT 06074 ij j : E i •j { +r t t I� a • i :i At3 L.YST' ! • A313A1t'•09*Wt .`.i.wlMi '091 .!�f'�;�Il� � n WVQAV aso • ��Q�iA+QiRfill. - 'a�n'M�w►RwlliR�uwt _ '. I�tsuatea..�r�.4.k e�i•�Yk€t+!3� �Ew?.4A#xk,i' DEC 2 4 2009 ASST.TOWN CLERK TOWN OF SOUTH WINDSOR INLAND WETLANDS_ AGENCY/CONSERVATION COMMISSION REGULAR MEETING WEDNESDAY, January 6, 2010 Madden Room 7:00 P.M* Please call Donna Thompson,ext.203 if you will be absent. PUBLIC PARTICIPATION: PERMIT EXTENSIONS: CORRESPONDENCE AND REPORTS: BONDS: MINUTES: 12/16/2009 CONSERVATION COMMISSION: WETLAND OFFICER'S REPORT: PUBLIC HEARING: 7:15 pm Appl.#09-38W Town of South Windsor—Sand Hill Road Reconstruction Project—IWA/Conservation Commission application for the reconstruction of Sand Hill Road including associated improvements to the drainage and storm water structures NEW BUSINESS Appl.#09-38W Town of South Windsor—Sand Hill Road Reconstruction Project—IWA/Conservation Commission application for the reconstruction of Sand Hill Road including associated improvements to the drainage and storm water structures OLD BUSINESS OTHER BUSINESS APPLICATIONS RECEIVED ADJOURNMENT APPLICATION STATUS Appl. Sub. Rec'd Name Public Min. Max. # Date Date Hearing Action Action Start Date Date* 09-38W 12/15/09 12/16/09 Town of South Windsor-Sand Hill Road 01/06/10 Reconstruction Project—IWA/Conservation Commission application for the reconstruction of Sand Hill Road including associated improvements to the drainage and storm water structures *Legal extensions to these dates have not been included. JAN072010 KOALZrtt ASST. TOWN CLERK TO BE PUBLISHED IN THE JOURNAL INQUIRER LEGAL NOTICE Saturday, January 9, 2010 SOUTH WINDSOR— INLAND WETLANDS AGENCY/CONSERVATION COMMISSION At the January 6, 2010 Regular Meeting, the Commission voted to take the following actions: Approved application #09-38W Town of South Windsor — Sand Hill Road Reconstruction Project — IWA/Conservation Commission application for the reconstruction of Sand Hill Road including associated improvements to the drainage and storm water structures, with conditions. Dated at South Windsor, CT this 6th day of January 2010 Elizabeth A. Warren, Chairperson Memorandum To: Inland Wetland Agency Conservation Commissioners From: Michele R. Lipe, AICP Assistant Director of Planning Date: December 16, 2009 Re: Added Inland Wetland Applications The following item(s)has been added to the"applications to be officially received"by the Inland Wetlands Agency/Conservation Commission for December 16, 2009. Appl.#09-38W—Town of South Windsor—Sand Hill Road Reconstruction Project— IWA/Conservation Commission application for the reconstruction of Sand Hill Road including associated improvements to the drainage and stormwater structures SAW N Sf4 ® C 't1 Tolu� V/ �� �• 1540 SULLIVAN AVENUE• SOUTH WINDSOR, CT 06074 I�Osox'c° TELEPHONE (860) 644 2511 December 15, 2009 Re: Sand Hill Road Reconstruction South Windsor, Connecticut Dear Property Owner/Resident: In accordance with Section 7.3b of the "Town of South Windsor Inland Wetlands, Watercourses, and Conservation Regulations", we are required to notify you that an application has been filed on the property abutting yours and is subject to a hearing by the Inland Wetlands Agency/Conservation Commission. The application and plans are on file with the South Windsor Planning Department. More specifically, the proposed drainage improvements for this project include the replacement of an existing corrugated metal culvert that crosses Sand Hill Road, removal of sediment from an existing channel, and construction of a rip rap sedimentation basin by the corner of Sand Hill Road and Chief Ryan Way, and the creation of a rip rap plunge pool to stabilize an undermined storm drainage out fall on the South side of Sand Hill road near Nevers Road. As an abutting property owner you are invited to the hearing to ask questions and/or give comments, however, you are not required to attend. You may also submit written comments regarding the application prior to the meeting if you so desire. For further information regarding this project and the specific date this will be heard please contact me at the above number, extension 245 or Jeff Folger, the Environmental Planner/Conservation Officer in the Planning Department at the above number, extension 253. Very truly yours, Jeffrey B. Doolittle, P.E. RECEIVED Town Engineer 5 7M ,S'OU01-w-W. EN OyyE7LINOSAGENCY CONSERVATION COMAMISSION Memorandum To: Commission Members From: Michele R. Lipe, AICP Assistant Director of Planning Date: 12/16/2009 Re: Appl 09-38W, Town of South Windsor Attached is the copy of the letter being sent to the abutters that describes the work being proposed with the associated application. The Town is requested that a public hearing be scheduled on January 6, 2010 on this application. Thank you. 1 DRAFT DRAINAGE REPORT RECONSTRUCTION OF SAND HILL ROAD SOUTH WINDSOR,CONNECTICUT December 16, 2009 MMI#2186-10 RECEIVED Prepared for: DEG 15 2009 Town of South Windsor Swath Winasar INLAND WETLANDS AGENCY Engineering Department CONSERVATION COMMISSION 1540 Sullivan Avenue South Windsor, CT 06074 Prepared by: MILONE&MmBROOM,INC. 99 Realty Drive Cheshire, CT 06410 (203) 271-1773 www.miloneandmacbroom.com Introduction The Town of South Windsor has identified the entire length of Sand Hill Road(approximately 3,300 feet)between Sullivan Avenue(Route 194)and Ellington Road(Route 74) as being in need of complete roadway reconstruction. No improvements to the intersections with Sullivan Avenue and Ellington Road are proposed. The existing pavement surface and the underlying base have deteriorated to the point where full-depth reconstruction is required to restore the roadway structure. The proposed roadway section will include an 11-foot travel lane with a new 5-foot bike lane in directions, new curbing, drainage improvements, and repaired driveways. In addition to minor drainage improvements such as replacement of catch basin tops, more significant improvements are proposed at the following areas: - Restoration of the existing 15"RCP outlet with two-stage plunge pool(Sta. 21+00) - Replacement of the existing elliptical 2.5' x 6.6' Corrugated Metal Pipe culvert(Sta. 31+50 just west of Chief Ryan Way)with a new 48"RCP culvert The proposed improvements within these areas are within delineated wetlands and/or the associated 80' Upland Review Area subject to approval by the local wetlands agency. These regulated activities are the subject of the attached Wetlands Application. See Figure 1 for existing conditions photographs of these areas. This report documents the hydrologic and hydraulic computations supporting the design of the 15"RCP outlet(Sta. 21+00) and the new 48"RCP culvert replacement (Sta. 31+50). Existing and Proposed Conditions Restoration of the Existing 15"RCP Outlet(Sta. 21+00) The existing 15"RCP outlet for the drainage system that conveys runoff from Sand Hill Road in the vicinity of the South Windsor Police Station is in poor condition. There is evidence of significant undermining at the reinforced concrete culvert end and square concrete splash pad. DRAINAGE REPORT CULVERT REPLACEMENT SAND HILL ROAD DECEMBER 2009 PAGE 1 As part of the reconstruction of Sand Hill Road this outlet will be restored and a two-stage plunge pool lined with modified riprap will be installed to reduce discharge velocities and provide some sediment removal under low flow conditions prior to discharge to Plum Gulley Brook. See the Appendix for outlet protection computations. Replacement of Existing Elliptical 2.5' x 6.0' CMP Culvert(Sta. 31+50) The existing culvert at Sand Hill Road at approximately Station 31+50 conveys an unnamed stream and consists of an 85-foot long elliptical CMP. There is-no evidence that the pipe is structurally deficient(i.e. no sagging in the roadway surface),however,the condition of the pipe based on visual field investigation can be characterized as poor. Approximately 6-12 inches of sediment build-up is evident at the inlet side and the bottom of the pipe appears to have significantly deteriorated over time. The condition of the sides and crown of the pipe show evidence of less significant wear and can be characterized as fair. The outlet side discharges into a drainage structure near the Plum Ridge Condominium complex and is in better condition with no sediment visible. Assessment of the condition of the existing culvert was limited to visual observations at the inlet and outlet ends only. The drainage area of the watershed(Sub-Watershed#1)to the culvert was estimated to be 95.0 acres(seemFigure 2) and includes runoff from Chief Ryan Way, Andreis Trail, Carriage Drive, a portion of Nevers Park, and some runoff from the southeast side of Ellington Road. The Rational Method was used to estimate flows to the culvert. This method is especially applicable to urban areas and incorporates rainfall intensity,drainage area, and runoff coefficients based on land use. Intensity-Duration-Frequency(IDF) curves are used to input the rainfall intensity. Rainfall intensity is obtained based on the time of concentration for the watershed. The Rational Method resulted in a flow of 74.1 cubic feet per section(cfs)during the 25-year storm event. Additionally, the drainage structure to which the culvert discharges to also accepts stormwater runoff from a separate storm drainage system collecting runoff(Sub-Watershed#2) from Norman Drive, Palmer Drive, Oakwood Drive, Valley View Drive, and portions of Sunnyside DRAINAGE REPORT CULVERT REPLACEMENT SAND HILL ROAD DECEMBER 2009 PAGE 2 Drive, Birch Hill Drive, and Deepwood Drive. The Rational Method resulted in a flow of 68.4 cfs during the 25-year storm event. Discharge computations are included in the Appendix. HY8, a culvert analysis program, was used to evaluate the hydraulics of the culvert crossing. This program estimates the hydraulic parameters such as water surface elevation on the upstream and downstream sides and the outlet velocities. The model input parameters consist of culvert data, roadway data, discharge data, and tailwater data. The existing conditions model assumes a 36"x 72"Elliptical CMP with a slope of 2.24%based on invert elevations obtained by field survey shots and field measurements. A slightly larger height dimension was assumed to reflect that no sediment was observed at the downstream end of the existing culvert. The proposed conditions analysis consists of evaluating the performance of a new 48"RCP and comparing the results with that of the existing culvert. The new culvert will be installed with a slope of 1.00%. To evaluate performance a tailwater elevation must be specified at the downstream end. Stormwater flows from both Sub-Watershed#1 and#2 were considered to establish a reasonable tailwater elevation under which to analyze the existing and new culvert under Sand Hill Road. The combined flows exit the existing drainage structure into an existing 48"RCP which runs adjacent to the Plum Ridge Condominium complex eventually discharging approximately 370 feet to the south. Assuming the existing 48"RCP flows under inlet control the tailwater was established at elevation 158.3 (See Appendix). Using this tailwater elevation the headwater on the inlet side of the existing and new culvert was determined. The results of the analysis are given in Table 1 below. Table 1: Results of Existing and Proposed Conditions During a 25-Year Storm Event Culvert Headwater Tallwater Control Freeboard(ft) ft ft) Elevation' Existing 36"x 72"Elliptical CMP 159.5 158.3 160.5 1.0 Proposed 48"RCP 159.3 158.3 160.5 1.2 'Elevation of berm at inlet side of culvert DRAINAGE REPORT CULVERT REPLACEMENT SAND HILL ROAD DECEMBER 2009 PAGE 3 Under the proposed condition the headwater elevation is reduced slightly by 0.2' indicating that a 48"RCP culvert performs slightly better than the existing CMP culvert. While other types of culverts were investigated, including elliptical and box culverts, a circular option is preferred for cost and ease of construction considerations. DRAINAGE REPORT CULVERT REPLACEMENT SAND HILL ROAD DECEMBER 2009 PAGE 4 APPENDIX Engineering, JOB 71ft�--10 !mowx 17r11 ea. �3. �1� ✓'. Landscape Architecture and Environmental Science SHEET NO. 1 OF VMILONE&MACBROOM° - CALCULATED BY S DATE I�Q 99 Realty Drive CHECKED BY_6Sj V— DATE Cheshire,Connecticut 06410 (203)271-1773 Fax(203)272-9733 SCALE �'. ' LG, r� D� fit:.+-.�. � P Jr�.�� �►j�c�� tip.,is).tP,00 �oZoef abg) - .Ia)fo. o )(p. I-) a. ��,,► . r� Worksheet 3: Time:of Concentration (Tc) or travel time (Tt) Project By Date 2t�6 - l0 - ► d JvrU - ►� ?�'p Location Checked Date Check one: Present ❑ Developed S,n1.- �SL�� j1l1) Check one: tATo -El through subarea Notes: Space for as many as two segments per flow type can be used for each worksheet. Include a map,schematic,or description of flow segments, `�r t r• ,`�ge��,� �Q•�y+aS,�� i t$.tT_CLF k R6�4§3S-,�,..• & ��'sr*�1 i� s ', ��4�c";�y' u... <'�#. .. y�l•- � ��#�'^z ,.,... ,. Segment ID 4-6,.439-3lt) 1. Surface description(table 3-1) ................................... WMAI LA 't 2. -Manning's roughness coefficient,n(table 3-1) .........: 3. Flow length,L(total L t 300 ft) ... ..........................ft Sao 4. Two-year24-hour rainfall, P2.................................. in 3•�- 5. Land sloe 's ...... ..........fvfi nEob�? • 6. Tt= 0.007 (nQ 0.s Compute Tt......... hr , L P2 0.5 S0.4 Segment ID B-C t510-AO) tT4v-74&) 7. Surface description(paved or.unpaved) RO�f"dd U�pavc d 8. Flow length, L ..........................................................:ft 690. qo�P 9. Watercourse slope,s ............................................ft/ft .O.DSIa'L 10. Average velocity, V(figure 3-1) .............................fUs 3;8 ?.Z 4 11. Tt= L Compute Tt...........hr 3600 V fx q ' `tag lfi�St € Segment11) D-F-041-7$) E--F'Lzts-154) 12. Cross sectional flow area,a ...............................ft2 4.11) �•Z� - 13. Wetted perimeter, pw .............................................. ft _ 1.85 7.a'1 14. Hydraulic radius,r= --a Compute r .......................... it _ i.tiD L i3 15 Channel slope, s .....Pw...........................................ft/ft n 01 0.0+131 j 16..Manning's roughness coefficient,n ............................ 0.013 ' 1 p , 17. V= .49 r 2/3 s u2 Compute V................tt/s 1,157 •17Mb 18. Ffowfength, L ..........................................................ft 4 t31p d19. Tt- L Compute Tt .............. hr d.of + .05 3600 V 20. Watershed or subarea To or Tt(add Tt in steps 6;11,.and 19) ...........:............................................ Hr (210.VI-VI Second Ed.,June IM) _F; S� '�7 D-3 Engineering JOB 7.1$fo — 10 4+44 Landscape ArchiWWre yy and Environmental Science SHEET NO. 7" OF J MILONE &MACBRooAr CALCULATED BY -IDOlk DATE Ljj 99 Realty Drive CHECKED BY DATE Cheshire,Connecticut 06410 (203)271-1773 Pax(203)272-9733 SCALE �t 14'x AM "Worksheet 3: Time of Concentration (TC) or travel time (Tt) Project By Date Location Checked Date �1,1,.�• ta. d ` Check one: %Present Developed SN\o- Check one: T4 Tc ❑Tt through subarea Notes: Space for as many as two segments per flow type can be used for each worksheet. Include a map,schematic,or description of flow segments. All i Segment ID 79-3.Ivv 1. Surface description(table 3-1) WW 2. -Manning's roughness coefficient,n(table 3-1) .......... 0.40 3. Flow length, L(total L t 300 ft) ..................... 4. Two-.year 24-hour rainfall, P2.................................. in �•2 5. Land slope,s ........................................................fVft r�.oit33 6. Tt= 0.007 (nL Compute Tt......... hr D.LA., P2 t?.5 g0.4 �;� ., d�� •-r°"-"� i s { ?�7 ;•t�.::may'' ": _ '� i Segment ID 13-G 13W-SIX) 7. Surface description(paved or unpaved) ..................... 04pwe.d 8. Flow length, L ................... .E 9. Watercourse slope,s ........................ 10. Average velocity, V(figure 3-1) .............................fVs 5.2. ' 11. -It= L Compute Tt......:.... hr , o•tl -i- D 3600 V '�:_'� "o .�3a' Ata�'.�'Gi,�'b•t; � ��... xt( 1.3 xC�' rx,ff i^ n `3 Segment ID 0-1500--262) D.;.li tA4-25z,) 12. Cross sectional flow area, a .................:..........:....ft2 13. Wetted perimeter, pvr ..............................I..........:....ft SA &-ze, 14. Hydraulic radius,r=_a Compute r ........................I it 15 Channel slope, s ......!!!..............a............................ft/ft rl a1's(r2 dnfl3 i 16. Manning's roughness coefficient, n ............................ b•�13 t7,n13- ' 2/3 1/? 17. :V= 1.49 r s Compute V................ft/s 1;.51 ?,&V 18. Row-length, L n..........................................................ft 05". p 19. Tt= L Compute Tt .............. hr Pln! -}- 3600 V 20. Watershed or subarea Tc or Tt(add Tt in steps 6, 11,and 19) ....................................................... Hr �-8 (210-VI-TIb56,Second Ed.,June 1986) D—ra ; ,Zt�" tP {V" D-3 r Worksheet 3: Time of Concentration (Tc) or travel time (Tt) Project By Date Location Checked Date 4�.. Check one: %Present ❑ Developed SIA�- W." C2 f 2) Check one: VTc ❑Tt through subarea Notes: Space for as many as two segments per flow type can be used for each worksheet.. Include a map,schematic,or description of flow segments. a Segment 1D 1. Surface description(table 3-1) ................................... 2. -Manning's roughness coefficient,n(table 3-1) .......... 3. Flow length, L(total L#300 ft) .................................ft 4. Two-year24-hourrainfall, P2................................. in 5. Land slope,s ........................................:................fvft 6. Tt= 0.007 (nQ 0.8 Compute Tt......... hr + L p2 0.5 so.a Segment ID 7. Surface description(paved or unpaved) ..................... 8. Flow length, L —.......:.....................:..........................ft 9. Watercourse slope,s ............................................ft/ft 10. Average velocity,V(figure 3-1) ............:................ft/s 11. Tt= L Compute Tt........... hr 3600 V • .icy.. - }.— i�`'.�rffi�'.l �Y K�'�-•z,�.r.��z.�:. .. _�r'��i�c-s. 7__ �r .. _._x��� s' t Segment It) E.;-F 12. Cross sectional flow area, a ..................................ft2 K.9I 3.14 13. Wetted perimeter,pw ..............................................ft 14. Hydraulic radius, r= a Compute r ......................... it f15 Channel slope,s .....�W......................:................:...ft/ft 16. Manning's roughness coefficient,n ............................ D.ol3 ov13 17. V= 1.49 r 2/3 s 1/2 Compute V.................fVs � 18. Ftonv-tength, Ln......:............................ ..- ' ..ft 935 i23� 19. Tt= L Compute Tt ............. hr 3600 V 120. Watershed or subarea To or Tt(add Tt in steps 6, 11, and 19) ............:............................................ Hr I (210-VI-T&66,Second Ed.,Jane 1086) .. D-3 F-4 Engineering, JOB £-` LandscapeArchitecdae and EnWmnmentai Sdence SHEET NO. OF MILONE&MACBROOAC CALCULATED BY DATE IZ�rI I f!1 99 Realty Drive CHECKED BY Cheshire,Connecticut 06410 DATE (203)271-1773 Fax(203)272-9733 SCALE • �, J > � ). t . Worksheet 3: Time of Concentration (Tc) or travel time (Tt) Project n rr By Date ZI,%,— 10 d _ jY t 12 i b Location Checked Date ur Check one: NPresent .0 Developed Sib- W 3 till) Check one: IXTo M Tt through subarea Notes: Space for as many as two segments per flow type can be used for each Worksheet. Include a map,schematic,or description of flow segments, r� ��a Ls b�P R 8 � aas sr.�a Segment ilk A-iS (15S-160 1. Surface description(table 3-1) ................................... •awl 6-ft4S 2. -Manning's roughness coefficient,n(table 3-1) .......... o•i5- 3. Flow length,L(total L t 300 ft).................................ft 4. Two-year 24-hour rainfall, P2.................................. .in 5. Land slope,s ........................................................fVft b.d i+fq 0 a Compute Tt......... hr ta.13 + 6. 0.13 Tt= 0,007 OD P2 0.5 S0:4 IMAJ� s sasarr¢mow sas �'� z... s Segment 1D M-e-1194- 153� 7. Surface description(paved or unpaved) ..................... POW—d 8. Flow length, L ...........................................................ft qS 9. Watercourse slope,s ............................................tt/ft _0,0105, 10. Average velocity, V(figure 3-1) .............................ft/s Z.d .i 11. I't= L Compute Tt...........hr 0,01 3600 V t. I , Segment It) C-D (INq-1442) Cross sectional flow area, a .................................ft2 1-Z� a 13. Wetted perimeter,pw ................ ..:.........................ft 14. Hydraulic radius, r=-`a Compute r ...................:....:ft Q;1 15 Channel slope,s .....P'............................................ft/ft o.v/3S F 16. Manning's roughness coefficient,n ............................ 4•nf3 17. V= 1.49 r 213 s 1/2 Compute V................ft/s 18. Flov length, L n..........................................................ft 51� Tt= L 19. Compute Tt .:............ hr t?,oZ -I- = Q,Oy 3600 V 20. Watershed or subarea Tc or Tt(add Tt in steps 6, 11,and 19) ........................................................ Hr 0.116 (210-VI-T&55,Second Ed.,June 1%6) D4q Engineering JOB Landscape Architecture and Environmental Science SHEET NO. OF " MILONE&MAcftow ' CALCULATED BY _ DATE 99 Realty Drive CHECKED BY DATE Cheshire,Connecticut 06410 (203)271-1773 Pax(203)272-9733 SCALE 16 iS z 06 a, Engineering, JOB Landscape Architecture and Environmental Science SHEET NO. OF MILONE&MACBP ooAr CALCULATED BY DATE 99 Realty Drive Cheshire,Connecticut 06410 CHECKED BY DATE (203)271-1773 Fax(203)272-9733 SCALE �z :-rw %� ► Tw -- s y gz ) L ) Hydrology 6 B-1 Appendix B Rainfall RAINFALL—DURATION—FREQUENCY RELATIONSHIPS FOR CONNECTICUT DURATION RETURN FREQUENCY(Years) 2 5 10 25 50 100 Min RAINFALL IN MM(INCHES) 5 9.1(0.36) 11.4(0.45) 13.0(0.51) 15.2(0.60) 17.2(0.67) 18.5(0.73) 15 18.3(0.72) 22.6(0.89) 25.9(1.02) 30.5(1.20) 34.0(1.34) 37.6(1.48) 60 33.0(1.3) 43.2(1.7) 50.8(2.00) 58.4(2.30) 65.3(2.57) 711(2.80) His 2 40.6(1.60) 54.6(2.15) 63.5(2.50) 72.4(2.85) 82.6(3.25) 91.4(3.60) 3 44.5(1.75) 61.0(2.40) 69.9(2.75) 82.6(3.25) 90.2(3.55) 101.6(4.00) 6 59.7(2.35) 74.9(2.95) 87.6(3.45) 101.6(4.00) 115.6(4.55) 127.0(5.00) 12 69.9(2.75) 90.2(3.55) 101.6(4.00) 123.2(4.85) 135.9(5.35) 152.4(6.00) 24 82.6(3.25) 106.7(4.20) 125.7(4.95) 146.1(5.75) 161.3(6.35) 177.8(7.00) 24 HOUR RAINFALL BY COUNTY Fairfield 83.8(3.3) 109.2(4.3) 127.0(5.0) 144.8(5.7) 162.6(6.4) 182.9(7.2) Hartford 81.3(3.2) 104.1(4.1) 119.4(4.7) 139.7(5.5) 157.5(6.2) 175.3(6.9) Litchfield 81.3(3.2) 104.1(4.1) 119.4(4.7) 139.7(5.5) 157.5(6.2) 17T8(7.0) Middlesex 83.8(3.3) 106.7(4.2) 127.0(5.0) 142.2(5.6) 160.0(6.3) 180.3(7.1) New Haven 83.8(3.3) 106.7(4.2) 127.0(5.0) 142.2(5.6) 160.0(6.3) 180.3(7.1) New London 86.4(3.4) 109.2(4.3) 127.0(5.0) 144.8(5.7) 160.0(6.3) 180.3(7.1) Tolland 81.3(3.2) 104.1(4.1) 121.9(4.8) 139.7(5.5) 157.5(6.2) 175.3(6.9) Windham 81.3(3.2) 106.7(4.2) 121.9(4.8) 139.7(5.5) 157.5(6.2) 175.3(6.9) Sources: 1. "Rainfall Frequency Atlas of the United States",Technical Paper No.40,U.S. Department of Commerce,Weather Bureau. 2. NOAA Technical Memorandum"NWS Hydro-35",June 1977,U.S.Department of Commerce,National Weather Service. Table B-1 October 2000 ConnDOT Drainage Manual Hyslroloev 6 B-9 RAINFALL INTENSITY in/hr DURATION DURATION 2 Yr 5 Yr 10 Yr 25 Yr 50 Yr 100 Yr 31 0.52 1.9 2.4 2.8 3.3 3.6 4.0 32 0.53 1.9 2.4 2.7 3.2 3.6 ` 4.0 33 0.55 1.8 2.4 2.7 3.2 3.6 3.9 34 0.57 1.8 2.3 2.7 3.2 3.5 3.9 35 0.58 1.8 2.3 2.6 3.1 3.5 3.8 36 0.60 1.8 2.3 2.6 3.1 3.4 3.8 37 0.62 1.7 2.2 2.6 3.0 3.4 3.7 38 0.63 1.7 2.2 2.5 3.0 3.4 3.7 39 - 0.65 1.7 ,2.2 2.5 3.0 3.3 3.7 40 0.67 1.7 2.1 2.5 2.9 3.3 3.6 41 0.68 1.6 2.1 2.4 2.9 3.2 3.6 42 0.70 1.6 2.1 2.4 2.8 3.2 3.5 43 0.72 1.6 2.1 2.4 2.8 3.1 3.5 44 0.73 1.6 2.0 2.3 2.8 3.1 3.4 45 0.75 1.5 ' 2.0 2.3 2.7 3.1 3.4 46 0.77 1.5 2.0 2.3 2.7 3.0 3.3 47 0.78 1.5 1.9 2.2 2.6 3.0 3.3 48 0.80 1.5 1.9 2.2 2.6 2.9 3.2 49 0.82 1.5 1.9 2.2 2.6 2.9 3.2 50 0.83 1.4 1.8 2.1 2.5 2.8 3.2 51 0.85 1.4 1.8 2.1 2.5 2.8 3.1 52 0.87 1.4 1.8 2.1 2.5 2.8 3.1 53 0.88 1.4 1.8 2.0 2.4 2.7 3.0 54 0.90 1.3 1.7 2.0 2.4 2.7 3.0 . 55 0.92 1.3 1.7 2.0 2.3 2.6 2.9 56 0.93 1.3 1.7 1.9 2.3 2.6 2.9 57 0.95 1.3 1.6 1.9 2.3 2.5 2.8 58 0.97 1.2 1.6 1.9 2.2 2.5 2.8 59 0.98 1.2 1.6 1.8 2.2 2.5 2.7 60 1.00 1.2 1.5 1.8 2.1 2.4 2.7 Rainfall Intensity/DuratiomTrequency Relationship for Connecticut(English Units) Table B-2.1 continued October 2000 ConnDOT Drainage Manual HY-8 Culvert Analysis Report (EXISTING 36" X 72" ELLIPTICAL CMP) Table 1 -Summary of Culvert Flows at Crossing: Ex. 36"X 72" Ell. CMP Headwater Elevation Ex 36"X 72"Eli. Roadway Discharge Total Discharge(cfs) Iterations (ft) CMP Discharge(cfs) (cfs) 158.30 0.00 0.00 0.00 1 158.32 10.00 10.00 0.00 1 158.39 20.00 20.00 0.00 1 158.50 30.00 30.00 0.00 1 158.66 40.00 40.00 0.00 1 158.86 50.00 50.00 0.00 1 159.11 60.00 60.00 0.00 1 159.41 70.00 70.00 0.00 1 159.54 74.10 74.10 0.00 1 160.13 90.00 90.00 0.00 1 160.53 1 100.00 99.26 0.61 16 160.50 98.68. 98.68 0.00 Overtopping Rating Curve Plot for Crossing: Ex. 36"X 72"Ell. CMP Total Rating Cinwe Crossui,!: E:x. 36"X 72" Ell. C1&P 160:5 ' ' 1 1 1 1 1 1 1 1 1 I 1 I 1 S 160.0 1 1 w-.y..w.......-•-------------------.-- 1 1 I i 1 1 1 I 1 1 1 1 1 159.0 ' ' ' 1 i 2 1 , 1 1 1 1 -1 1 158 5 1 1 1 1 , 1 1 f 1 1 1 0 20 40 60 80 100 Total Discharge (cfs) Table 2- Culvert Summary Table: Ex. 36"X 72" Ell. CMP Total Culvert Headwater lnletControl ' Outlet Flow Normal Critical Outlet Tailwater Outlet Taiiwater Discharge Discharge Elevation Depth(ft) Control Type Depth(ft) Depth(ft) Depth(ft) Depth(ft) Velocity Velocity (cfs) (afs) (ft) Depth(ft) (ft/s) (fus) 0.00 0.00 158.30 0.000 4.400 0-NF 0.000 0,000 0.000 6,600 0.000 0.000 10.00 10.00 168.32 0.855 4.422 4-FFf 0.569 0.692 1 3.000 6.600 0.726 0.000 20.00 20.00 1 158.39 1.238 4.490 1 4-FFf 0.788 0.997 3.000 6.600 1.451 0.000 30.00 30.00 1 158.50 1.558 4.603 4-FFf 0.972 1.245 3.000 6.600 2.177 0.000 40.00 40.00 1 158.66 1.897 4.761 4-FFf 1.128 1.459 3.000 6.600 2.903 0.000 50.00 50.00 1 158.86 2.225 4.964 4-FFf 1.270 1.630 3.000 6.600 3.628 0.000 60.00 60.00 1 159.11 2.515 5.213 4-FFf 1,400 1.790 3.000 6.600 4.354 0.000 70.00 70.00 159.41 2.804 5.507 4-FFf 1.527 1.936 3.000 6.600 6.080 0.000. 74.10 74.10 159.54 2.944 5.640 4-FFf 1.576 1.995 3.000 6.600 5.377 0.000 90.00 90.00 160.13 3.544 6.230 4 FFf 1.767 2.208 3.000 6.600 6.531 0.000 100.00 99.26 160.53 3.907 6.626 4-FFf 1.880 2.324 1 3.000 6.600 7.203 0.000 - N*M*Mk##RN#*#kN#N#*k##kRRRt#NN*NA#N#*NtkN#kRRRN1R*i**NA##kN***#NN Inlet Elevation(invert):153.90 ft, Outlet Elevation(invert):152.00 It Culvert Length:85.02 ft, Culvert Slope:0.0224 +FrtNRN#N*+hFk+etN**kk*R#NNN#YkNYINR###Y#N*kkkRN*NN##NRNN#NY*N#R#* Culvert Performance Curve Plot: Ex. 36"X 72" Ell. CMP C tth-cit: Ex. 36" X 'W"Ell. OUP Inlet Control Elev Outlet Control Elev 160 ' ' ' 1 I __w 1 ". 1- 158 - I 1 1 --- ' m ; I 1 1 1 I 1 1 1 157 1 ------------------------ - --------------;-- 6 1 1 1 1 1 1 I 1 1 I I 1 1 1 1 --------------- 154 -----' 1 __- _.�__..-._.__�_______________r___.___.____._y______.-_ •-__..-_________r___ 1 1 1 1 1 0 20 40 60 80 100 Total Discharge (cfs) Water Surface Profile Plot for Culvert: Ex. 36"X 72"Elf. CMP C'ro iikg - Ex. 36 X 2"Ell. t_'11iP, Desi i Discliar,e - ?4.1 cfs C' idiot- Ex. 36"X 72"Ell. CIg', C uh?eit Dis char e - 74.1 ds 1 1 1 1 1 - 160 -- ' 1 1 ------- ' --------- ----- i. 1 1 1 I I 1 ..}.1.- 1 1 1 1 1 1 1 1 1�JV 1 1 1 1 1 1 15S I 1 1 1 1 ---- ----------- -- ------•----------- 1 i 1 _• 1 1. - F 15� 1 1 --- --- '- -------- 1 _-1- h 1 1 I 1 I I L. 1 1 -:1 1 1 1 1 / 1 1 1 , , ' I .-�^-�'_1 I 1 164 1 1 1 , f , 1 1 1 1 1 1 1 1 1 - i 1 1 i - ---.1 1 1 1 1 1 1 1 I 1 1 1 1 152 1 1 , ----;-----------1------------1....--_----+----------------------- - --------'--I---�-�-- -20 0 20 40 60 80 100 Station (ft) Site Data-Ex. 36"X 72" Ell. CMP Site Data Option: Culvert Invert Data Inlet Station: 0.00 ft Inlet Elevation: 153.90 ft Outlet Station: 85.00 ft Outlet Elevation: 152.00 ft Number of Barrels: :I Culvert Data Summary- Ex.36"X 72" Ell. CMP Barrel Shape: User Defined Barrel Span: 6.00 ft Barrel Rise: 3.00 ft Barrel Material: Corrugated Metal Riveted or Welded Embedment: 0.00 in Barrel Manning's n: 0.0220(top and sides) Manning's n: 0.0220 (bottom) Inlet Type: Conventional Inlet Edge Condition: Square Edge with Headwall Inlet Depression: None Table 3-Downstream Channel Rating Curve (Crossing: Ex. 36"X 72" Ell. CMP) Flow(cfs) Water Surface Bev(ft) Depth(ft) 0.00 158.30 6.60 10.00 158.30 6.60 20.00 158.30 6.60 30.00 158.30 6.60 40.00 158.30 6.60 50.00 158.30 6.60 60.00 158.30 6.60 70.00 158.30 6.60 74.10 158.30 6.60 90.00 158.30 6.60 100.00 158.30 6.60 Tailwater Channel Data - Ex. 36"X 72"Ell. CMP Tailwater Channel Option: Enter Constant Tailwater Elevation Constant Tailwater Elevation: 158.30 ft Roadway Data for Crossing: Ex. 36"X 72" Ell. CMP Roadway Profile Shape: Constant Roadway Elevation Crest Length: 50.00 ft Crest Elevation: 160.50 ft Roadway Surface: Paved Roadway Top Width: 32.00 ft HY-8 Culvert Analysis Report (PROPOSED 48" RCP) Table 1 - Summary of Culvert Flows at Crossing: New 48" RCP Headwater Elevation New 48"RCP Roadway Discharge (8) Total Discharge{cFs) Discharge(ds) (S) Iterations 158.30 0.00 0.00 0.00 1 158.32 10.00 10.00 0.00 1 158.38 20.00 20.00 0.00 1 158.47 30.00 30.00 0.00 1 158.60 40.00 40.00 0.00 1 158.77 50.00 50.00 0.00 1 158.98 60.00 60.00 0.00 1 159.22 70.00 70.00 0.00 1 159.33 74.10 74.10 0.00 1 159.83 90.00 90.00 0.00 1 160.18 100.00. 100.00 0.00 1 160.60 108.04 108.04 0.00 Overtopping Rating Curve Plot for Crossing: New 48" RCP Total Ra thig (--',Lu-v.e C'rossnig: Now 48" RCP 160.0 ' ...i..............1.....-....--..i....------•--.y....--.......-yam....---.-. ..y... - 7♦I 1 1 1 I 1 1 1 1 1 1 1 I 1 , 1 1 1 1 1 1 1 159.0- 1 1 1 1 1 1 _ 1a8.5 1 0 20 40 60 80 160 Total Discharge (cfs) Table 2- Culvert Summary Table: New 48" RCP Total Culvert Headwater Outlet Outlet Tallwater Discharge Discharge Elevation Inlet Control Control Flow Normal Critical Outlet Taihvater Velocity Vebcity (cls) (c1s) 00 Depth(ft) Depth(ft) Type Depth(ft) Depth(ft) Depth(ft) Depth(ft) (ft/s) (ft/s) 0.00 0.00 156.30 0.000 5.400 0-NF 0.000 0.000 0.000 .6.600 0.000 0.000 10.00 10.00 158.32 1.246 6.419 4-FFf 0.680 0.905 4.000 6.800 0.796 0.000 20.00 20.00 158.38 1.801 5.475 4-FFf 0.975 1.305 4.000 6.600 1 1.592 0.000 30.00 30.00 158.47 2.288 5.570 4-FFf 1.219 1.622 4.000 6.600 2.387 0.000 40.00 40.00 158.60 _ 2.738 5.701 4-FFf 1.410 1.879 4.000 6.600 3.183 0.000 50.00 50.00 158.77 3.141 5.871 1 4-FFf 1.601 2.114 4.000 6.600 3.979 0.000 60.00 60.00 168.98 3.521 6.078 4-FFf 1.767 2.329 4.000 6.600 4.776 0.000 70.00 70.00 159.22 3.900 6.323 4-FFf 1.933 1 2.521 1 4.000 1 6.600 5.570 0.000 74.10 74,10 159.33_ 4.059 6.435 4-FFf 2,001 2.696 4.000 6.800 5.897 0.000 90.00 90.00 159.83 4.719 6.927 47S2.408 51 2.868 4.000 6.600 7.182 0.000 100.00 100.00 160.18 5.184 7.285 4-FFf 3.018 4.000 8.500 7.958 0.000 Inlet Elevation(invert):152.90 ft, Outlet Elevation(invert):152.00 ft Culvert Length:85.00 ft, Culvert Slope,0.0106 Culvert Performance Curve Plot: New 48" RCP Performance C_An-ve C' -veit: New. 48" RCP EE Inlet Control Elev Outlet Control Elev 16 , 1 1 , 1 1 -- ----------,--------------- --------------1, -+� -- -•--------------•--- i 1 1 158 -- ---------- ' ------------- ' - - - .T. ----------------- --------------1_ -r----._-- _- I 1 W '1 1 1 1 1 a� 156 ---;--------------=--------------- ----- ----------------------Ir-------------- �--- 155 ' 1 I , I , 1 1 I 1 1 1 153 --' --------------- -------- ' ----------------- I 1 1 1 1 1 1 1 1 1 1 0 20----- -----40 60 80 100 Total Discharge (efs) Water Surface Profile Plot for Culvert: New 48" RCP C.-ro-sshig - New 48" R(_'F, Des pi Discharge - 74.1 efs (Aih-eif- New 48"RC'P, C'tih•eif Dischar c "'4.1 cfs 1130 1 1 1 _ 1 ....•--------.-.Y...-....--.-.• ---------. --.---.--M -. -.-y---------.- ..-. 159 ----L---------- L ----- 11 -- ---- -------- ------J -------- I - I ; 158 - ---- , — — —I�c 1 1 I r1. 1 1 1 1 1 1 I 1 1 1 1 I 1 I 157 , 156 1 i 155 - -�- �-- 1 t 1 1 1 1 154 -. ' --- -. --------- ' --------- { ............' 153 ' 1 1 I 1 1 152 1 1 1 1 I I 1 1 1 I I 1 -20 0 20 40 50 80 100 Stab on (ft) Site Data -New 48" RCP Site Data Option: Culvert Invert Data Inlet Station: 0.00 ft Inlet Elevation: 152.90 ft Outlet Station: 85.00 ft Outlet Elevation: 152.00 ft Number of Barrels: 1 Culvert Data Summary- New 48" RCP Barrel Shape: Circular Barrel Diameter: 4.00 ft Barrel Material: Concrete Embedment: 0.00 in Barrel Manning's n: 0.0130 Inlet Type: Conventional Inlet Edge Condition: Square Edge with Headwall Inlet Depression: None Table 3- Downstream Channel Rating Curve (Crossing: New 48" RCP) Flow(ds) Water Surface Elev(ft) Depth(ft) 0.00 158.30 6.60 10.00 158.30 6.60 20.00 158.30 6.60 30.00 158.30 6.60. 40.00 158.30 6.60 50.00 158.30 660 60.00 158.30 6.60 70.00 158.30 6.60 74.10 158.30 6.60 90.00 158.30 6.60 100.00 158.30 6.60, Tailwater Channel Data - New 48" RCP Tailwater Channel Option: Enter Constant Tailwater Elevation Constant Tailwater Elevation: 158.30 ft Roadway Data for Crossing: New 48" RCP Roadway Profile Shape: Constant Roadway Elevation Crest Length: 50.00 ft Crest Elevation: 160.50 ft Roadway Surface: Paved Roadway Top Width: 32.00 ft RECONSTRUCT-ION OF SAND HILL ROAD SOUTH WINDSOR CONNECTICUT INLAND WETLANDS & WATERCOURSE PERMIT APPLICATION GENERAL NOTES I��{1 �-{ 1 I/� 1. RFORNATION REGARgNG iNE LOCATI0.ON OF E%SPNC UTILPES IL45 BEEN BASED UPON AVAILABLE INFORMATION AND MAY - DECEMBER Y S, 2W9 EHSHOULD BE CO.ANDED P WHERPoOR TO BECANNING CONSO,RUCPOND CALLO'CALLEBEFORE LYOUTDIG:�-800-ALL-9922 4455.ALLS - - UTIUTY LOCATIONS THAT 00 NOT MATTETIO VF THE OR HEER FOR CONTROL SHOWN ON THE PUNS SHALL IMMEDIATELY BE SROUGHT TO THE ATTENTION OF THE ENGINEER FOR RESCLVTION. - 2. MILONE a MACBROOM INC.ACCEPTS NO R,,MNSMW FOR PIE ACCURACY OF MAPS AND MIA WHICH HAVE BEEN u al: SUPPLIED W OTHERS. - z -I \ 3. All DIMENSIONS AND ELEVAT.ONS SHALL BE VERM IN THE FIELD PRIOR TO CONSTRUCTION. ANY DISCREPANCIES SHALL BE BPOVCHT TO THE ATTENTION Oi THE ENGINEER.. 4. SEOIYEM AND EROSION CONTROL MElSURES AS DEPICTED ON THESE PLW$AND DESCRIBED WITHIN THE SEDIMENT AND EROSION CONTROL NARRATAA:SCULL.BE IMPL.EMEHIEO MD UANTNNED UNTIL PQ2WWENT COVER AND STAOILIMTION IS `\ EROSION NCO.ALL SEDIMENT ANC EROSION CONTROL MEASURES SHALL CONFORM TO THE'GUDELWES FOR$Oa EROSION"As AND SEOMIENT CONTROL,CONNECPCUT-ROOK.AND IT/J.L CASES BEST MAINAGENEM PMCfICES SHALL PREVAIL 5. ALL CRSTURBEO AREAS SHALL RECENE A MMIMUM OF 4'TOPSOIL,AND BE STPOEO WTN GRASS OR SODDED,AS SHOWN ON THE aEANS. \ A South WTIDSOT - fi. ALL CONSTRUCTN;N NAPRIALS AHO NETNODS SHALL CONFOPM t0 1,1E TOWN OF SOUTH WNOSOR REOUNEMENT$AND TO 1HE / THE APPUCABIE SECTIONS OF THE STATE CONNECTIC0 DEPART.SNT OF TRANSPORTMKN STANDARD SPECIFICATIONS FOR ROADS.BRIDGES,AND NGDTNTAL CONSTRUCTION,FORM B16 AND ADDENUUMS ¢, 7. REMOVE FUEL,OIL,PAINT OA OTHER HAZPADOUS MATERIALS SHOULD BE STORED IN A SECONDARY CONTAINER AND REMOVED 10 A LOCKED INDOOR AREA WITH!lH WPEPWOl15 FlDGP OUTING NON-NARK HOURS. ` ] S. COMPLIANCE WITH THE PERMIT CONDITIONS M THE RMMNSIBIL,OF BOTH THE CONTRACTOR AND THE PER UTTEE d W S. TINE CONTRACTOR MIST-MAINTAIN(REPPN/ H.IS COALMETEDREPLACE WHEN NECESSARY)THE SILTATION CONTROL UNTIL ALL DEVELOPNEMT ACT AND ALL USTURBED AREAS ARE PERMANENTLY STABEIZED. R 74 CONSTRUCTION SEQUENCE LIST OF DRAWINGS.• 1. PRIOR TO COMMENCEMENT OF WORK A PRECONSTRUCPON MEETING SHALL BE HEIR WITH TOWN STAFF AND REFRESENTATMES OF THE CONTRACTOR AND OWNER. AT.HIS MEETING.ONE PERSON WILL BE PLACED IN CHARGE OF \ SHEET No. DRAWING TITLE - �EOIMENT AND EROSION CONTROL FOR THE ENTIRE SITE I \ PROJECT 2. CONTRACTOR TO-SAKE OUT UMIT OF DISTURBANCE AND VEGETATION TO BE RETAINED. NO DISTURBANCE IS TO TAKE LOCATION I - PLACE BEYOND THE UL11TS OF WORK SHOWN. j � i 4 A - (ELT 3. CONTRACTOR TO INSTALL or "EROSION CONTROLS ALONG THE PERIMETER,AND SABEUZEO CONSTRUCTION - _ _ 1 TITLE SHEET _ ENTRANCES. L.._.,.\`-. e ; 4. CLEAR AND GRUB SITE AND STOCKPILE TOPSOIL PLACE SEDIMENT FILTER FENCE AND HAYBAL.ES AROUND STOCKPILES. - - _ - 2 OVERALL PROJECT PLAN 5. IMTUtE MASS FPATHWDRK OPERATIONS TO ESTABU M SN SUBGDE AFTER BASIN•SILT FENCE ATD Ii4YBALES PRE INSTALLED. - J \.� - - - �..�.\ w� q p /� 6. SLOPES ARE TO BE ESTASLSHEO AS SOON AS PRACV. SUCRE UTILITY INSTALLATION. STABLIZE ALL SLOPES IMMEDIATELY 1 �\ a5E 3 - REGULATED ACTIVITY#1 AFTER I EIR ESTABLISHMENT- 7 T`�` J • . INSTALL DRANAGF e. PLACE,GRADE AND COMPACT ROADWAY BASE MATERIAL 196 l aF REGULATED ACTIVITY#1 - 9. INSTALL BITUNNNOUS CONCRETE AND CURBING- A CROSS-SECTION(STA.21+00) _ 10. COMPLETE STIM UZATKN OF DISWRBED AREAS. lip f j y g 4 g REGULATED ACTIVITY#2 SEDIMENT AND EROSION CONTROLS SHALL BE INSPECTED AT LEAST ONCE A WEEK AND WIN IN 24 HOVRS OF THE END OF A STORM WITH A RAINFALL AMOUNT OF 0.5 NCH OR GREATER - (}' 1 ( ~ 12. THE SEDIMENT AND EROSION CONTROL PLAN SHALL BE MODLIFE By THE CONTRACTOR AT THE DIRECTION OF THE ENGINEER - 1 -.\`_` 1 y!- ^} °a b REGULATED ACTIVITY#2 AND THE CINS DESIGNATED PEPRESENIATNE AS NECESSITATED BY CHANGING SITE CONDITIONS ` ) ,4- �Fe 4' �7 H �♦ - 13. INSPECTION OF THE SITE FOR EROSION SHALL CGNTINUE FOR A PERIOD OF,NREE MONTHS AFTER COMPLETION WHEN WATER HANDLING PLAN _ RAINFALLS OF ONE NCH OR MORE OCCUR. - - '"'J /' 14. ALL DEYTATERIHL WASTE WATERS SHALL BE DISCHARGED IN A MANNER WHICH MINIMIZES THE DISCOLDRAPDN OF THE RECENINC - 7 SEDIMENTATION$L EROSION CONTROL PLAN WATERS. /y�F�IE�T 15. THE SITE SHOULD BE KEPT CLEM OF LOOSE DEBRIS.UTTER.AND BUILDING MATERIALS SUCH THAT NONE OF THE ABOVE PROJECT SITE g E..T VICINITY MAP• STATION.12+00 TO 16+00 ENTER WATERS OR WETLANDS. PROJECT EJ1 1 1J 10. A COPY OF ALL PLANS AND REVISIONS,AND THE SEDIMENT AND EROSION CONTROL PLAN SHAD.BE MAINTAINED ON-SITE AT 0 - $ SEDIMENTATION HL EROSION CONTROL ALL TIMES DURING CONSTRUCTION - 1 ,'=,DOD' NOTES.AND DETAILS RECEIVED DEC 15 7004 MILONE &MACBROOM® SouthWildsoT Engineering, INLAND WETLANDS AGENCY Landscape Architecture CONSERVATIONCOMMISS'ON and Environmental Science 99 Rc01ty D&G CIMRhuc COnlxvticut 06410 (203)271-1773 I'tlK(203)272-9733 1 - ww.ml UlMoMm ntld oum.cuTR - Zp:gol L^a2c1 5M0'llVH3A0-HS\N0ISSMS(1S 0NVU]M ONVINI\1N38?Jf10\OMO\01-99LZ\ro6dNSOS\:O gulMoip ,tot - SL jagw—o 60OZ'any:.I.p t!44 c0 INM3H11tl14 :Aq Witold m G) a. C r -D-I m � p D i NEVERS ROAD G) c m D v � � N �I. y e cy q` +f pia r;�e RO rp O: REVISIONS ensmeerns, Lndxepe ArchJfcctvre m o OVERALL PROJECT PLAN _ end snvlronm.nte,Sc,ence _ RECONSTRUCTION OF SAND HILL ROAD 00 miLoNE&MACBPoc)mo 99 Realty Dr ve O N n ll' �. Cbe '!i Connecticut 06410 m N oD N p° (203)271-1773 Fwc(203)272-9733 N � w .miloncwdm bmom.com �, 1 Q m O , SOUTH WINDSOR, CONNECTICUT V en E o ! jf N 3 a i 9 / - 3 a APPROXIMATE FLOOD ZONE BOUNDARY(ZONE AE) f 1.�`•=j r if (FIRM FLOOD INSURANCE RATE MAP, j !; HARTFORD COUNTY.CONNECTICUT `1 o 6/1PROTECT EX.TREES s PANEL 383 OF 675) f t l4u . r FNIDEPROPOSED 4'W £ i A1L.h CONC.SIDEWALK r add 4 te�a++ o 8 m .. _. C- �.s 'w� t/ 7 op BITUMINOUS CONCRITE # - >._ b ��� s -.'��._.. , �`' LIP CURBING(TYP) '" A r f y }._ IW1 f Wf12 � D el AT&T ' One y ;, .., �" � :' SPLIT RAIL FENCE o sr WG ljj� o a a x . ^ 4 { 4P / CONCRETE DRIVEWAY/�f� l s`=> PROTECT EX.TREES HILL 4.._-�; / - ,. ,. .>.,..� '^"t=._ E:. .».-ors +?" 3 """'"'""`^-a-»a:i 32'FULL-DEPTH ROADWAY ` RECONSTRUCTION — - _ — a yN j s d O cc to :r \ + _ q f 142ry� / r " rlJ ' `w w RC�SET X.�15"g.C,CC..E. `^`� i fJ Q y� V # Y INV. 8'•0.�,�„„„_-�—k .. "` -- ._ 142 "° - ' z Tree REMOVE E ONC. Z -SPLASH PAD O I,,. I \ \ �✓ `��. ., �. j�"""„�'�, .� �?'• !-I J ��1 1 #VF� b( �+o-ti, - IFIED RIPRAP'e....w... /> �° fn 1 °'a "of a` 1//�1 ..✓,.,.'f "�^ TWO"-STAGE PLUNGE POOL �., `. �" .�. ,� /" 1" uj Q: O # . JF WFa�� Q ?� hIFl� 4 Catch � Z - t,_ ;.,. .,w»...- -....� .� /' ° ^.�"", '--"/ "-✓✓ ,~'"' 20 �% I O. F.. uJ Lu CC ca WF1 s.i> \ a- \ REGULATED ACTIVITY#1 ' J REGULATED ACTIVITIES SUMMARY TABLE O WF18 A mv` =1}a. ' a ~ JDM SMB GF i TOTAL REGULATED AREA DISTURBANCE WETLANDS I AND 80 Fr.UPLAND REVIEW AREA)=0.178 AC.(7,769 S.F.) u s=cn 1 cxc xm o APPROXIMATE - y`, - - AREA OF WETLAND AND WATERCOURSE DISTURBANCE-0 AC. x SLOPE LIMIT +� DEC. 2009 J3� 1 AREA OF WETLAND AND WATERCOURSE CREATION=0 AC• —cr o 2186_10 QD �'3 :' •=`�F° ob/ W F2.1 � 7 CONTROL(TYP.) LINEAL FEET OF PROPOSED STREAM ALTERATION=0 Ff- SEDIMENT_&EROSION c� TOTAL AREA OF PROJECT=3.162 AC.(137,728 S.F.) ■ 03 3 / ENLARGEMENT PERCENTAGE OF PROJECT THAT IS WETLANDS=0.8"a xo. SCALE:1"=10' s ecr — 90:9ni 4-An1 OMO'SNO1102sila0—HsV..N3aanO\OMO\ol-92Lz\ro8dNsas\:O:6-!--IO 9L 1°9wa»o 600z'ani:atop'M UO WM3HliVVI :AQ Pa17o1d w w w w w 4�1 -P A -P cn VON -NO? OOON -P01, 000 O L ) i O� O , I I I I I U7 I O I I I I � o I I, r m 's z m w o I I Ex. Streetline N O i ICI 4L I XI o II I � I � 0 I I I O I � N O I , I I Ex. Streetline I w i O I I Ln I O I I ) r o I rn O 0 UI � N 41 li I--� i--► I--' r r-► t-+ -Ph Lq ON 6mOo0N �P � 0000 io REVISIONS sngm°°Y1nQ, `o; REGULATED ACTIVITY #1 - CROSS SECTION (STA 21+00) a "W m and Env(ronmeniel Setclonce § RECONSTRUCTION OF SAND HILL ROAD ���MILONE m &MACBROOM® ° ® N n _ M 99 Realty Drive OD .. W Cheshire,Connecticut 06410 ro —N JOo o_ 4 (203)271-1773 Fax(203)272.9733 0 � T SOUTH WINDSOR, CONNECTICUT wuaemiloneanamaPbroom.mm o N i REGULATED ACTIVITY#2 REGULATED ACTIVITIES SUMMARY TABLE o TOTAL REGULATED AREA DISTURBANCE(INCLUDING WETLANDS / f/ AND 80 Fr.UPLAND REVIEW AREA)=0.180 AC.(7,833 S.F.) PROTECT EX.TREES q { / AREA OF WETLAND AND WATERCOURSE DISTURBANCE i , 0.028 AC.(1,202 S.F.) ! ~r= a AREA OF WETLAND AND WATERCOURSE CREATION=0 AC. Basin i 3 r LINEAL FEET OF PROPOSED STREAM ALTERATION=70 FT. Z a TOTAL AREA OF PROJECT=3.162 AC.(137,728 S.F.) # \ I !£ k ✓ s ..... . `l o PERCENTAGE OF PROJECT THAT 1S WETLANDS=0.89% MODIFIED RIPRAP r" r ,r•,, i a... r' '- �,& ;r _ef...r - .,.yfrr /" \ .:,< 1€& ,rr \'rr3a • w E 1 48 R.C.C.E. H E 1. '^., / INV.=152.9 -, ._ c I �: J v �'� z4 .'ZI•; I SEDIMENT&EROSION /j i o � " ., / CONTROL(TYP.) f� /`'r "-,. `� '� �.=I I;e �tt,ci< _-=, ;�� .. •r' I r'I � 5a,r� t. Vf l _APPROXIMA`TE N SLOPE LIMIT BITUMINOUS CON`7REtE....ti ; / o r W13II4r r,f rt' £ 1 ! co = REMOVE CB t ` r ,k ?'•-_._.,_v_ -...LIP CURBING QYP.) „-,. � �„ L i d i '�,1`"r /' PREFORMED SCOUR �� N r k �, ORME R HOLE !l � / � I j f 'f TYPE MODIFIEDP rf � 7Es/ j,` y_ 'g - TYPE.16'CB•..- __ f"•: ,l if•/ -i'`1 • ter✓ - --_ / �k if•• � 'f3#• / `,� T.f!=159 80 �� k�lV:=156.10 f ; ,'t_�-.,j/ ,,.' °i � r, .•, t� J j _. REMOVF.@X..'- /.. •.� � r=fa�•�;� -_- r tee, i l C ;1 NEW SIDEWALK�MP(TYP.) \ 75'48"CL.SP / -- 5€ 7"r t2 J "`- / 32'FULL-DEPTH ROADWAY "'} i � •: Q L�-O \ ION O / _ RECONSTRUCT / � 4 \ 33'-15"RCP,5=1.21% �� J? .� _._ J , - - r / O O £ - ti -' INV.=15z.0t\ \ +... _ �! �\ r \ Q o IY k I ; w .� - . �� T.F..'159.32 d �t •-`� INV.=155.70 J Z S 0 12'-15"RCP,S=1.67%\ - `r' '\vk / i V \ \ \ .... Lc:r LLI - \ INV.=155.50 �� `\ Lu cr 80 �UPLAN i REA -,_ fTE _.� I; Li .. £F. # .,,.. f \ JDM SMB GF 1 o t. o �. "^1"=20 . ,.3 DEC. 2009 r-tre; rno�cT. 2186-10 bash " o REMOVE CB , r ! 05 0 w,<» PROTECT EX.TREE F TEMPORARY DIVERSION BARRIERESTABLISH TEMPORARY BYPASS i ✓ , � / SEDIMENT&EROSION CONTROL(TYP.) / / »✓ ; 0 s i PUMPING INTO NEW CB \ r ✓ \ w/' _ o 11117 S `•w..ti `PoT�,�,�""^w- j� <5 ��:,mgx ^'~`• ¢ # \�� -�.. `.'nm,. ��4�„°^'w /f '�/'.d" �./ � �i � m�p C� ��• t & \ X f ` 6 SEDIMENT&EROSION CONTRO m IN FORMED 0 SC �i E y m 4ri,1.=il.iL.I t�it3t ;i () i A T� o `\� \ �\ "`•.- w / ®` �.'a':::: O / MODIFI RI P R \ 80 PbkPLANST _ EV w7PRE — —IVO / , ..F. \ --80.ET UPbAN�' ..- A -REVIEW A C� STAGE t - CONSTRUC110N STAGE 2 --CONSTRUCTION a SCALE: 1'= 30'-0" SCALE: 1"= 30'-0" Q =- 4 („REMAINDER OF MODIFIED RIPRAP ''f �L Q 0 -�..--�... _.�.�. ._.- ,.�� \ ram✓ .,�- �'`�� .�. ---� �, 3 J 2 t� INSTALL RCCECNI INSTALL.NEW ROADWAY,00 �l 71, r� wF — - __a... f J 5 O o --rNS.TQL.L 48"RCP z V \ U JJtF O Z AGED CONSTRUCTION - 48" RCP `REMOVE EXISTTI" Q O °C CMP CULVERT f W = Q 1. INSTALL SEDIMENT AND EROSION CONTROL MEASURES PER PLAN. co «io ¢ ~ 3 2. INSTALL STORM DRAINAGE AS SHOWN ON PLANS //O \\ ✓` O j 3. INSTALL TEMPORARY DIVERSION BARRIER AS SHOWN ON PLANS. rW _ 4. ESTABLISH TEMPORARY BYPASS PUMPING AS SHOWN ON PLAN. ' " ~° LU N :. ..✓^� ` tea.-"M,. v ,55.�STALL NEW PREFORMED SCOUR HOLE 6. INSTALL MODIFIED RIPRAP AS SHOWN ON PLAN. �, -^^'" """�'---...., � � JDM SMB CaF ECxEO STAGE \ / j^ oR^1"=30' 7. REMOVE EXISTING CMP CULVERT AND END SECTION. __ DEC. 2009 B. INSTALL NEW 48'RCP AND RCCE. 9. INSTALL MODIFIED RIPRAP AS SHOWN ON PLAN. h ae " 90 YI �- 2186-10 10. REMOVE TEMPORARY BYPASS PUMPING AND DIRECT FLOW INTO NEW 48"RCP. II. TOPSOIL&TURF ESTABLISHMENT. 12. REMOVE SEDIMENT AND EROSION CONTROL MEASURES. \ / 13. INSTALL NEW ROADWAY. 3 STAGE 3 - CONSTRUCTION O C SCALE: 1"= 30'-0" 31:Ol -Sl 60OZ'-1:a1oP siyl u0 WM3H11VW :AQ Pallold L0:9n1 inaAcl 0MO'NVId-HS\NOIsstvie15 ONVI13M ONVIN1\1143218nO\OMO\OI-981Z\roedNS05\:0:6ut—(] r Q 1 ,1 �� - 0 I m > , Apr" 1 "" m / O low z . .. T ! E r j s o � 1� , i �i o ; 1 Ilk �w i f saetaeeriw, SEDIMENT & EORSION CONTROL STATION 12+00 TO 16+00 REYISION8 L.ds ,.Anhie-t— end Science O m RECONSTRUCTION OF SAND HILL ROAD - ���Mu.ONE&MACBROOM� s n = 3 99 Realty(hi A ve r � Cheahirq Connecticut 06110 O Si fl P t I e SOUTH WINDSOR, CONNECTICUT (2o3)z71d773 Paz(zo3)27zA733 8w�vvmiloneandmecbroom.cnm - ESTABLISHMENT: - 1YPIOV.FENCE POST SEDIMENT do EROSION CONTROL SPECIFICATIONS TEMPORARY VEGETATIVE COVER 1.SMOOTH AND FIRM SEEDBED WITH CULTIPACKER OR OTHER SIMILAR GENERAL: EQUIPMENT PRIOR TO SEEDING(EXCEPT WHEN HYDROSEEDING). �# GENERAL: - I.TEMPORARY VEGETATIVE COVER SHALL BE ESTABLISHED ON ALL 2 SELECT ADAPTED SEED MIXTURE FOR THE SPECIFIC SITUATION. NOTE AMOCO PROPIX SILT STOP SEDIMENT RATES AND THE SEEDING DATES(SEE VEGETATIVE COVER SELECTION do CONTROL FABRIC OR APPROVED THESE GUIDELINES SHALL APPLY TO ALL WORK CONSISTING OF ANY AND ALL UNPROTECTED AREAS THAT PRODUCE SEDIMENT,AREAS WHERE FINAL MULCHING SPEC.BELOW). 36-* EQUAL(GEOTEXTI.E) TEMPORARY AND/OR PERMANENT MEASURES TO CONTROL WATER POLLUTION AND GRADING HAS BEEN COMPLETED,AND AREAS WHERE THE ESTIMATED PERIOD H SOIL EROSION.AS MAY BE REQUIRED,DURING THE CONSTRUCTION OF THE OF SHALL BE APPLIED IF AREAS E SC WILL NOT BE SURE IS LESS THAN 12 MONTHS. TEMPORARY 3,APPLY SEED UNIFORMLY ACCORDING TO PATE INDICATED,BY PROJECT. PERMANENTLY SEEDED BY SEPTEMBER 1. FLOW - (� BROADCASTING,DRILLING,OR HYDRAULIC APPLICATION. IN GENERAL ALL.CONSTRUCTION ACTIVITIES SHALL PROCEED IN SUCH A EXISTING OWE MANNER 50 AS NOT TO POLLUTE ANY WETLANDS,WATERCOURSE.WATERBDDY.AND SITE PREPARATION: 4.COVER GRASS AND LEGUME SEED WITH NOT MORE THAN 1/4 INCH OF SOIL cc CONDUIT CARRYING WATER,ETC. THE CONTRACTOR SHALL LIMIT,INSOFAR AS WITH SUITABLE EQUIPMENT(EXCEPT WHEN HYDROSEEDING). Ip POSSIBLE,THE SURFACE AREA OF EARTH MATERIALS EXPOSED BY CONSTRUCTION I.INSTALL REQUIRED SURFACE WATER CONTROL MEASURES. _ _ METHODS AND IMMEDIATELY PROVIDE PERMANENT AND TEMPORARY PC 5.MULCH IMMEDIATELY AFTER SEEDING.F REQUIRED.ACCORDING 70 12.41N. BURY ENO OF CEOTEXTHE CONTROL MEASURES TO PREVENT CONTAMINATION OF ADJACENT WETLANDS. 2.REMOVE NOOSE ROCK,5TONE,AND.CONSTRUCTION DEEMS FROM AREA. TEMPORARY MULCHNG SPECFICATIONS. (SEE VEGLTATIVE COVER ,I MIN.e'INTO SOIL WATERCOURSES,AND WATERBODI ES,AND TO PREVENT,INSOFAR AS POSSIBLE. 3.TILLAGE SHOULD ACHIEVE A REASONABLY UNIFORM LOOSE SEEDBED. WORK ON SELECTION 4X MULCHING SPECIFICATION BELOW): EROSION ON THE SITE CONTOUR IF SITE IS SLOPING. 6.USE PROPER INOCUTANT ON ALL LEGUME SEEDINGS,USE FOUR(4)TIMES_ NORMAL RATIO WHEN HYDROSEEDING. _ SEDIMENT FILTER FENCE _ -N.T.S. LAND GRADING ESTABLISHMENT: 7.USE SOD WHERE THERE IS A HEAVY CONCENTRATION OF WATER AND IN GENERAL: - 1.SELECT APPROPRIATE SPECIES FOR THE SITUATION. NOTE RATES AND CRITICAL AREAS WHERE IT IS IMPORTANT TO GET A QUICK VEGETATIVE SEEDING DATES(SEE VEGETATIVE COVER SELECTION h MULCHING COVER TO PREVENT EROSION. 1.THE RESHAPING OF THE GROUND SURFACE BY EXCAVATION ANDFILLING OR SPECIFICATION BELOW). A COMBINATION OF BOTH,TO OBTAIN PLANNED GRADES.SHAWL PROCEED IN MAINTENANCE: - - ACCORDANCE WITH THE FOLLOWING CRITERIA: 2.APPLY SEED UNIFORMLY ACCORDING TO THE RATE INDICATED BY - ) TEST FOR SDI-ACIDITY EVERY THREE(3)YEARS AND LIME AS R SV( REQUIRED. - - TWO STAKES PER BALE BROADCASTING,DRILLING.OR HYDRAULIC APPLICATION: ° ^ a.THE CUT FACE OF EARTH EXCAVATION SHALL NOT BE STEEPER THAN TWO - - 5 HORIZONTAL TO ONE VERTICAL(2:1). - 3.UNLESS HYDROSEEOEO,COVER RYEGRASS SEEDS WITH.NOT MORE THAN 4 _ q,ON SITES WHERE GRASSES PREDOMINATE.BROADCAST ANNUALLY 500 POUNDS PLACE BALES SO BINDINGS ®III INCHES OF SOIL USING SUITABLE EQUIPMENT. OF 10-10-10 FERTUZER PER ACRE(12 U3S.PER 1,000 SO.FT.)OR AS ON BALES ARE PARALLEL' ARAU TO THE GROUNNDD _ PQ � b.THE PERMANENT EXPOSED FACES OF FILLS SMALL NET BE STEEPER THAN - - NEEDED ACCORDING TO ANNUAL SOH.TESTS. - III 1 I I®ISMALLAA = TWO HORIZONTAL TO ONE VERTICAL(2:1). 4.MULCH IMMEDIATELY AFTER SEEDING IF REQUIRED. (SEE VEGETATIVE 11111 I II i EVO - -COVER SELECTION h MULCHING SPECIFICATION BELOW.) APPLY STRAW OR -3.ON SITES WHERE LEGUMES PREDOMINATE.BROADCAST EVERY THREE(3) I I III'III I. _ I I B N g NINE OUTFACE aF.ROCK EXCAVATION SHALL NOT DE STEEPER THAN ONE HAY MULCH AND ANCHOR TO SLOPES GREATER THAN.3B OR WHERE YEAR$OR AS INDICATED BY SqL TEST 300 POUNDS.OF 0-20-20OR I �. ��.1 $ HORIZONTAL TO FOUR VERTICAL.(1:4). - CONCENTRATED FLAW WILL OCCUR. EQUIVALENT PER ACRE(8 LBS PER 1,000 SO.FT.). d.PROYISION SHOULD B MADE TO CONDUCT SURFACE WATER SAFELY TO - ENTRENCH SALES TO A STORM TITANS TO PREVENT SURFACE RUNOFF FROM DAMAGING CUR FACES PERMANENT VEGETATIVE COVER EROSION CHECKS _ -DEPTH OF 2"TO 4' ` I I I I 11111 I III® I BACKFILL AND COMPACT Fn 9p°s AND FILL SLOPES. - - _ / _ I I 1 1 I I 1 ) EXCAVATED SOIL ON _ F' GENERAL' - GENERAL. // II I I I I 1 II UPHILL SIDE OF BALES e.EXTO 04DAS SHOULD NOT B MADE 50 CLOSE TO PROPERTY ONES AS - 1 PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED AS VARIOUS 10 ENDANGER ADJOINING PROPERTY WITHOUT PROTECTING SUCH 1.TEMPORARY PERVIOUS BARRIERS USING SALES OF NAY OR STRAW.HELD IN FILL VOIDS WITH F £ PROPERTY FROM.EROSION,SLIDING.SETTLING,OR CRACKING. - SECTIONS OF THE PROJECT ARE COMPLETED IN ORDER TO STABILIZE THE PLACE WITH STAKES DRIVEN THROUGH THE BALES AND INTO THE GROUND OR LOOSE STRAW ,1 / i 1 ,, SOIL,REDUCE.DOWNSTREAM DAMAGE FROM SEDIMENT AND RUNOFF.AND TO SEDIMENT GEOTEXTILE FASTENED TO A FENCE POST AND BURIED INTO I a V- f.NO FILL SHOULD BE PLACED WHERE IT WALL SLIDE OR WASH UPON THE ENIN4NCE THE AESTHEfiC-NATURE OF THE SITE• IT WILL B APPLIED TO THE GROUND.SHAD.BE INSTALLED AND MANTANED AS REQUIRED TO PREMISES OF ANOTHER OWNER OR UPON ADJACENT WETLANDS. AL CONSTRUCTION.AREAS SUBJECT TO EROSION WHERE FINAL GRADING HAS CHECK EROSION AND REDUCE SEDIMENTATION:.- -•�" WATERCOURSES,OR WATERBODIES. BEEN COMPLETED AND A PERMANENT COVER IS NEEDED- CONSTRUCTION:. / - q.PRIOR TO ANY REGRADING.A STABILIZED CONSTRUCTION ENTERANCE SITE PREPARATION:- SHALL BE PLACED AT THE ENTRANCE TO THE WORK AREA IN ORDER TO 1 INSTALL REQUIRED SURFACE WATER CONTROL MEASURES. 1.BALES SHOULD BE PLACED IN A ROW WITH ENDS TIGHTLY ABUTTING THE REDUCE MUD AND OTHER SEDIMENTS FROM LEAVING THE SITE. ADJACENT BALES. - - TOPSOIIJNG - 2.REMOVE LOOSE ROCK,STONE,AND CONSTRUCTION DEBRIS FROM AREA 2 EACH BALE SHALL BE EMBEDDED INTO THE SO A MINIMUM OF FOUR(4*) 1.IDEALLY,BATES SHOULD BE ENTRENCHED 2 TO 4 OUCHES AND - . TIGHTLY BUTTED TOGETHER. BALES-CANBE SUCCESSFULLY PLACED INCHES 3.PERFORM ALL PLANTING OPERATIONS PARALLEL TO THE CONTOURS OF THE WITHOUT A TRENCH IF GOOD GROUND CONTACT IS MADE. REMOVE GENERAL - SLOPE. 3.BALES SHALL BE SECURELY ANCHORED IN PLACE BY WOOD STAKES OR HEAVY BRUSH AND FILL ALL VOIDS WITH LOOSE APPLY TOPSOIL AS INDICATED ELSEWHERE HERON. IN STRAW- REINFORCEMENT BARS DRIVEN THROUGH THE BALES AND INTO THE GROUND. 2.BALES SHAH ONLY USED AS A TEMPORARY BARRIER AND FOR 1.TOPSOIL SHALL BE SPREAD OVER ALL EXPOSED AREAS IN ORDER TO 4. _ THE FIRST STAKE EACH BALE SHALL BE ANGLED TOWARD THE NO LONGER THAN 80 DAYS. - PROVIDE A SOH.MEDIUM HAVING FAVORABLE CHARACTERISTICS FOR THE - PREVIOUSLY LAID BALE TO FORCE BALES TOGETHER. . ESTABLISHMENT.GROWTH,AND MAINTENANCE OF VEGETATION. S.APPLY FERTILIZER ACCORDING TO SOIL TEST OR: - - - 4.GEOTEXTILE SHALL BE SECURELY ANCHORED AT THE TOP OF A THREE _ 3.WHEN SEDIMENTATION SEDIMENTATION DEPOSITS REACH WITHIN 3'OF THE TOP Q 2.UPON ATTAINING FINAL.SUBGRADES.SCARIFY SURFACE TO PROVIDE A GOOD SPREAD SEEDING: WORK DEEPLY IN SDI.,BEFORE SEEDING,300 LBS. FOOT(3)HIGH FENCE AND BUFNED A MINIMUM OF FOUR INCHES(41 TO BALES.REMOVE DIRECTLY BEON OR ADD ADDITIONAL BALES ON BOND WITH TOPSOIL OF 10-1D-10 FERTILIZER PER ACRE(7 LOS.PER 1,000 SO.FT.):THEN SIX THE SOA• SEMIS BETWEEN SECTIONS OF FILTER FABRIC SHALL OVERLAP SEDIMENTATION DIRECTLY BEHIND FIRST ROW OF BALES AS _ (B)TO EIGHT(9)WEEKS LATER,APPLY ON THE SURFACE AN ADDITIONAL 300 A MINIMUM OF TWO FEET(2�)• DIRECTED BY THE ENGINEER. 3.REMOVE ALL LARGE STONES,TREE LIMBS.ROOTS AND CONSTRUCTION CBS•OF 1D-10-10 FERTILIZER PER ACRE. AFTER SEPTEMBERI.TEMPORARY - DEBRIS. VEGETATIVE COVER SHALL BE APPLIED. - INSTALLATION AND MAINTENA AN NCE: - 4.UPON ESTABLISHMENT OF GROUND COVER ON DISTURBED AREAS AND WHEN DIRECTED BY THE ENGINEER,HAY BALES WILL BE 4.APPLY LIME ACCORDING TO SOIL TEST OR AT THE RATE OF TWO(2)TONS FALL SEEDING: WORK DEEPLY IN SOT.,BEFORE SEEDING,600 LBS.OF 1 BALED MAY EROSION BARRIERS SMALL BE INSTALLED AT ALL STORM SEWER REMOVED AND USED AS.MULCH. ANY SEDIMENTATION WILL BE .PER ACRE 1G-10-10 FERTILIZER PER.ACRE(14 LEIS.PER 1,000 SO.190- INLETS WHEN BASIN IS BOTTOM OF ALL SLOPES- TMNLY SPREAD UPON ESTABLISHED GROUND COVER. MATERIAL• MULCHING: 2.BALED HAY EROSION BARRIERS AND SEDIMENT FILTER FENCE SHALL BE 1.TOPSOIL.SHOULD.HAVE PHYSICAL,CHEMICAL,AND BIOLOGICAL STRAY OR HAY 70-90.1B5./1,DU0 SOFT• INSTALLED AT THE LOCATION INDICATED ON THE PUN AND IN ADDITIONAL - HA L l7ALE BARRIER PROTECTION AREAS AS MAY BE DEEMED APPROPRIATE DURING CONSTRUCTION. CHARACTERISTICS:FAVORABLE TO THE GROWTH OF PLANTS. (TEMPORARY VEGETATIVE AREAS) 3.ALL EROSION CHECKS SHALL BE MAINTAINED UNTIL ADJACENT AREAS ARE _ N.T.S. 2.TOPSOIL SHOULD HAVE A SANDY OR LOAMY TEXTURE_ WOOD FIBER IN HYDROMULCH SLURRY 2S-50LBS./I.ODO SQ.-FT. STABILIZED. 3.TOPSOIL SHOULD BE RELATIVELY FREE OF SUBSOIL MATERIAL AND LUST B 4.INSPECTION SFMLL BE FREQUENT(AT MINIMUM WEEKLY AND BEFORE AND 1 FREE OF STONE$(VIER 1-IN DNAMETER),LUMPS OF SON.,ROOTS,TREE AFTER HEAVY RAN)AND REPAIR OR REPLACEMENT SHALL BE MADE �•�--C LIMBS,TRASH,OR CONSTRUCTION DEBRIS. R SHOULD BE FREE OF ROOTS 1 OR RHIZOMES SUCH AS THISTLE. DEBRISSS,AND OUACKGRASS. VEGETATIVE COVER SELECTION dC MULCHING PROMPTLY AS NEEDED. 5.EROSION CHECKS SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR 3 SP - 4.AN ORGANIC MATTER CONTENT OF SIX PERCENT(6.S)IS REQUIRED. AVOID TEMPORARY VEGETATIVE COVER: USEFULNESS SO AS NOT TO BLOCK OR IMPEDE STORMWATER FLOW OR _ LIGHT COLORED SUBSOIL MATERIAL. PERENNIAL RYEGRASS 3 U3S./1.DOO SQ.FT. DRAINAGE.. 5.SOLUBLE SALT CONTENT OF OVER 500 PARTS PER MILLION(PPM)1S LESS. (KLLUIUM PERENNE) SUITABLE AVOID TIDAL MARSH SOILS BECAUSE OF HIGH SALT CONTENT PERMANENT VEGETATIVE COVER: - AND SULFUR ACIDITY. � W 8.THE PH SHOULD IT MORE THAN 8.0. IF LESS,ADD LIME TO INCREASE PH CREEPING RED FESCUE 2 LBS./1.000 SOFT.(FE$TUCA RUBRA) - TO AN ACCEPTABLE LEVEL - - REDTOP 1 LB./1,000 SQ.FT. - 2 p B O 4B APPLICATION _ (AGROSTIS AEA) _ 1.AVOID SPREADING WHEN TOPSOIL S WET OR FROZEN. TALL FESCUE 2 IBS./1,000 SOFT- - JJ (FESTUCA ARUNDINACEA) - _ - Z.. G _ 2.SPREAD TOPSOIL UNIFORMLY TO A DEPTH OF AT LEAST FOUR INCHES(4-), MULCHING: - - i OR TO THE DEPTH SHOWN ON THE LANDSCAPING PLANS. - CULVERT END 'd STRAY OR HAY 70-90 LBS./1.000 SOFT. O _ (TEMPORARY VEGETATIVE AREAS) - - - _ 4c ~ - WOOD FIBER IN HYDROMULCH SLURRY 25-50 LBS./1,000 SQ.FT. - - 3:1 SIDE SLOPE 0 N ENDWALL (TYP.) 0F Z 1 LL PLAN o U Z ENDWALL INVERT AS SHOWN ON W DRAINAGE PLANS- - - CULVERT END vco Q - F IN.FOR STD.RIPRAP F.. 11 N.FOR TNT. RIPRAP IP I I _ z 2N.FOR MOD..RIPRARA P Z - RP 3 - 0 GEOTEXTILE(SEPARATION) / GRANULAR FILL 6IN. FOR MODIFIED OR INTERMEDIATE RIPRAP jDj CiF d 12 IN.FOR Poolm BRAWN IcmE ELEVATION STANDARD RIPRAP) $LIE As seowN PREFORMED SCOUR HOLE TYPE I DETAIL a< DEC.2000 PRwT No. 200-10 PREFORMED SCOUR HOLE DIMENSION TABLE RIFRAP B C 2SP 3$P F. It LOCATION TYPE (FEET) (FEET) (FEET) (FEET) (FEET) SAND HILL ROAD MODIFIED 20 24 8 12 2 08 STA.31+50 L varRu