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HomeMy WebLinkAboutBrook Crossing ' D INLAND WETLANDS WATERCOURSES AND CONSERVATI TOWN OF SOUTH WINDSOR APPLI ATION l I ( DATE RECEIVED Cn Irv 4 i i96 APPLICATION # ED �p � l �- � ZONE South Windsor INSTRUCTIONS INLAND WETLANDS AGENCY/ CONSERVATION COMMISSION 1.` THE APPLICATION, MAP AND PLANS MUST BE SUBMITTED IN DUPLICATE: TOGETHER WITH THE FEE SET FORTH IN THE INLAND WETLANDS, WATERCOURSES AND CONSERVATION REGULATIONS, TOWN OF SOUTH WINDSOR. (SEE REGULATIONS, SECTION VII). 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 REQUIRED BY THE AGENCY HAVE BEEN SUBMITTED. THE APPLICANT SHALL ALSO COMPLETE THE STATE FILING FORM. APPLICANT'S NAME: Collins Crossing,L.L.C. by Nola Johannes,Manager ADDRESS: c/o Harold Cummings,Esq. ,16 10 Ellington Rd,Box 667,So. Windsor,CT 06074 PHONE: (HOME) 649-7297 (Johannes) (WORK) 644-3473 (Cummings) B. LEGAL OWNER'S NAME: (same) ADDRESS: PHONE: (HOME) (WORK) (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 PROPERTY 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 (if any) -- Collins Crossing 1. Contact Person (if further information is needed). Peter DeMallie,Design Professionals,Inc. , 165 S Satellite Rd ,So Windsor,CT 06074 Tel. 291-8755 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 WATERCOURSES MAP. ASSESSOR'S MAP # 89 PARCEL 23 & 28 west side of Nevers Road, south of South Windsor High School F. NAMES OF ALL ABUTTING PROPERTY OWNERS: (USE SEPARATE SHEET IF NECESSARY) Catherine S. Collins;Nola Johannes;John & Barbara Callahan;Faith C. Martin; Eileen D. Schweir; David C. & Linda S. Brown; Town of South Windsor(High School) G. HAVE YOU NOTIFIED ALL ABUTTING PROPERTY OWNERS 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 'tD TPS CF f IItL.AND THE TIME F}L FOMENT INVOoLVEED: ree u i i ies crossing o rook(wetlands application only-conservation application to be submitted with PZC applications) . Time element=l construction season. Design • 74±lf0 c.y. rip rap; 2500 cy fill;l CB;1CB w/sedimentation structure;2 manholes;100lf 15"ADS;65 if 8" PVC;65 if 8" DIP;hydrant;65 if sidewalk;bit, concrete & process,No other regulated wetlands activities are proposed. Every effort has been made to avoid disturbance. 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. ACREAGE OF WETLANDS AND WATERCOURSES TO BE ALTERED: 0.18 acre or 7,800 sq. ft. K. ACREAGE OF WETLANDS AND WATERCOURSES TO BE CREATED: 0 L. LINEAL FEET OF PROPOSED STREAM ALTERATION: 150 (total length of culvert & rip rap) M. TOTAL LAND AREA OF PROJECT AND PERCENTAGE WHICH IS WETLANDS: Project is 30.78 acres. Total wetlands is 1.19 acres, or 3.870 of total site. N. 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.) Corps of Engineers; DEP 401; PZC(site plan/subdivision/special permit) ;WPCA; Town Council approval to be requested for open space. 0. THE APPLICANT (OR DESIGNATED REPRESENTATIVE) HEREBY ATTESTS THAT A SIGN WILL BE POSTED AT THE FOLLOWING LOCATION(S) Nevers Road frontage. by , Design Professionals,Inc. NAME Peter DeMallie ON*OR BEFORE TH F LLOWING DATE: as directed by Town staff. 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 A INLAND WETLANDS, WATERCOURSES AND CONSERVATION PERMIT FOR THE PROPERTY DESCRIBED HEREIN AND CONFIRMS THAT; 1. HE IS FAMILIAR WITH THE CURRENTLY EFFECTIVE INLAND WETLAND, 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, SHALL BE SUFFICIENT GROUNDS FOR REVOCATION OF ANY PERMIT UNDER THESE REGULATIONS. 4. BY MAKING THIS APPLICATION, THE APPLICANT GIVES PERMISSION TO THE INLAND WETLAND, 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 APPLICATION BOTH BEFORE AND AFTER A FINAL DECISION HAS BEEN ISSUED. -Q /manager,Collins Crossin ,L.L.C. Sign ture of Owner f Property Date June 4,1996 /Mana er Collins Crossin L.L.C. Signature of Appi ant Date June 4,1996 Statewide Inland Wetlands & Watercourses Activity Reporting Form r n accordance with the requirements of Section 22a-39-14 of the Regulations of Connecticut State Agencies, this form is to be completed for each action. Completed forms for all reportable actions during a calendar month shall be mailed to the Commissioner by the local agency no later than the 15th day of the month following the month in which the action was taken. (See instructions on back) 1 . TOWN: south Windsor 2. LOCATION:(original scale copy of the U5GS QUAD Mao with the site outlined or pinpointed) USGS QUAD MAP NUMBER: OR NAME: Manchester 3. APPLICANT/VIOLATOR OR PROJECT NAME: Collins Crossing 4. ACTIVITY TYPE CODE: (see list of codes on back, max. of 4 codes) . . [ 9 ] If type code is 12 or 13, briefly describe the activity: 5. ACTIVITY PURPOSE CODE: (enter only one code letter) . . . . . . . . . . [ C ] 6. AREA OF WETLANDS AND WATERCOURSES ALTERED (or proposed to be altered, temporary or permanent, for ALL agency permits, denials and enforcement actions) A. Wetland Area Altered: . . . . . . . . . . . . . . . . . . . . . . . . . . . [0.18 CRES\OR SO. F r.) circle one) B. Onen Water Body. Area Altered: . . . . . . . . . . . . . . . . . . . . . [ ACRES OR SO. FT.) (circle one) C. Stream Alteration: .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [ 150 LINEAR FT.) 7. AREA OF WETLANDS OR WATERCOURSES CREATED: . . . . . . . [ o ACRES OR SQ. FT.] (do not include wetlands converted to open water)• circle one) 8. TOTAL AREA OF PROJECT SITE: . . . . . . . . . . . . . . . . . . . . . . [30.78 ACRES] For Local Agency Use Only For State Use Only 9. REPORTING MONTH: 10. PUBLIC HEARING HELD: Y N GIS CODE 11: ACTION: enter letter A. permit issued 8. permit denied C. permit extended/amended D. map amendment E. enforcement action F. jurisdictional ruling 12. AGENT: DATE RECEIVED DEP/rev.?/95 Culvert Analysis (P O) o ?J 0 03 Line 'Segment (Station to Station) N Time to Inlet (mina 's o CA sti 1 ) o Czv v ( w Time in Pipe (min.) N 4 Accumulated.-Time (min) A I Entering Catch LA O J 43 Basin p O p p O p O N tJ � �� — an Sum of Al in System N N N � z -4 Rainfall Intengity(in. ej O Q Cy �p .s� -� :z _ a) Q in System (c.f.s.) (� % r tD Pipe Size & Type N p Length of Pipe (fta r n ,� o ® o o g o_ o 0 0 = Slope (ft./ft.) N Average Velocity(t:p.$) � s N �N :► ctz 'v� � . M. `•�' W Full Capacity (C-ts) .A Headwater (f t.) o a o o ,n 0o o b o b a u o o N � a o 0 o v o 0 10 'oN 190qS :Aq pe�aay0 alnoa os uMo1 nj NJIS30 W31SAS B M ,, 01 -- Line 'Segment (Station to Station) r ' t b b N Time to Inlet (mina b A w Time in Pipe (min.) Accumulated.-Time, O Cr (min) ' a O d O I d Al Entering Catch Basin W w r aD Sum of Al in System N l N -4 Rainfall Intengity(inhz t> co Q in System (c.f.sa lh lA tP: tS1 w Pipe Size. & Type UV N W O Q o o p Length of Pipe (ft) Slope (ft./ft.) tt1 W o a o a ° fir► . ca `� st N � N Average Velocity(t:p.$) io Ub � � Qb It.% 74 , 1A w Full Capacity (cfs) .p Headwater (f t.) ' y o b b n� a � Jo VN 1e04S , :Aq pe�lo�y0 alnoa '° r(� �r' uMol 9b S� L 7,3-2 b? 5 S . 0 Ad NJIS30 IN3.LSAk H M . c — Line 'Segment . U V (Station to Station) ; s, o G N Time to Inlet (mint 1 v (A Time in Pipe (min.) S CA CA G l� o .p Accumulated. Time, ' O Cp o G o (mina O 0 d 0 Al Entering Catch Q14 O.. IN N - — 6 Basin _ o a p o Ira (P ;rr m Sum of Al in System UIj ' �� N l�►► -4 Rainfall IntengityGn! N �,• _ m Q in System (c.f.s.) bF �A ` � �_ I> ` d_ �- cD Pipe Size & Type NN. N tv o CA Cv to p Length of Pipe (fta 0 p p o 0 0 0 0 = Slope (ff./ft) •J N q tl ry Average Velocity(t:p.$) Full Capacity (cf s) p Headwater (f t.) ' O r-Ob G �Q o 0 0 o Q n 0 0 0 0 ;° 'ON teS : .alnoaat� r uMo1 �tq pe�o�y� 9b 2 '?ti �N� r,��0-1 1 NJIS30 W31SA M _ -- Line 'Segment N Q (Station to Station) N Time to Inlet (mint 1 0 CY 0 o y, CATime in Pipe (min.) 9N �,a ��► .p Accumulated •Time, 0 0 `J N N CP (minaCD , A I Entering Catch J N cn _ Basin oW �a rn Sum of Al in System -4 Rainfall IntenkityCnJhc W w _ N m Q in System (c.f.s.) 6' s Ut •� N N cD Pipe Size & Type � U � N N O O _i a p Length of Pipe (fta T ZVI -q O 0 0 O G p p o 0 0 0 = Slope (ft./ft) v i N Average Velocity(tp.sa Full Capacity (cts) .�, Headwater (f to ' o � o C Q 0 I FTH I o b o U n 0 0 10 'oN teOLIS -- djucl :Aq p8�1oaUQ etnoa Z° uMo1 b �a s 7V �N X NJIS30 W31SAS HnMag WHM ,. PROJECT, )4 t A-4 STORM SEWER DESIGN Sheet_of LOCATION Sovr+A wwl> civil engineers planners surveyors 6SIgn (203) 291-8755 DESIGN STORM DATE 6 1?� �6cv i� rofesslonals, Inc. DESIGED BY 5S? CHECKED BY south. wlndsor, A 06074 e111DA U. `n ° o 0 edld (l}poeH ID ,A}lOadDo MOIJ ,- wnwlXalN N °0 a0 "0 N d — 00 1n to c(j ? >t{f r: 6 }laOle/1 N p aBDJany d- N N r'► V d= 0 c0 d d N 4 'i 4 edoIS p Q 0 0 N g o q q o ® 0 0 ° O ('}}) adldto y}6ua-Ia N '� � N � � v � N � � N � � � � � ed�tj puD V, 9 az!S ad ¢ a g e d ` a° t a - ;� _ I d Il _ in '0r/) N N T T (0) � � we}sAsulMoid 00 N oo44c� o din � Oo (1) A}Is ua}u I 0 V) 1 t; t Iidtula8 `t' `t -a- v 3i 0 V) �t •c � we}o wn! cn o o 0° i— 0 � o cn �! 0 0 Odd S o - uisog uo}a0 _ ID 6uIJa}u3 �n ram- o r � �o � in o m � 4 o Ob - a o - o o a o (•ulw) QwLL ` o �? o .0 cn o `� M pa}Dinwnooy to ('uIw) adlduiewll M o p q o o ° o 0 0 � Npo 132 l 01 N N N c� V1 N a = � V) l T e u o ow ill m .l� r 0 } I I � I.I. - .B.O o} '8'0 � � � r to � M Jo N — N .N N � vi N NV At * V) ,0 N N = Lj N N N D o D n 0 a a 6 tp 0 to nthp uew6e ed � � n } S I d o > tL e_ 5- PROJECT_- STORM SEWER DESIGN Sheet—of LOCATION chill engineers planners surveyors estgn (203) 291-8755 DESIGN STORM 1c4e DATE 6 a 6 rofesslonals, inc. DESIGED BY :51:5'V CHECKED BY - south w►ndsor, ct. 06074 to _ anlD/1 U 0 0 p 0 0 Q Q q p Q adld (j}pnaH AlIoDdDO MOIJ d t3` t3 d wnWIXI)yy `� a0 d� o� op � r` 1 ,� �1 0 � A}loolen cv rn 0 0 ` N �► o o� v) s r �� a6Daany \o �D D; 1t1 �o a a; M \o mot- \.n ci Uj adoi$.}} 0 U�1 N q � � �0 r 0 p p ® o odld 10 41BU4;1 awCL l puD a, ° ° ° ' a azlS edld N in ;n in i� in ,1 in ,� �n `!n V) "!P u+ , co d tf` d wa}sits ul Mol3 0 — O N N A}Isua}ui — IID}ulD8 `D d 4 4 4 M a -Q ° M M � I wa}s/tS ul W N q a� N 0 d. m m — 2 iq UISDB l.Io}DD 6 Ul.la}U3 to r p 0 0q. to M +� M rn r°1 `n a o ►C Db ('UIw) awll pa}Dinwnooy ¢ o r r ,odId uliwe WLL o 1alul u w 01 awls c�1 �P 1P cJ a l!1 U1 M �° \.n \n \n ", '8'D o} '8'D Q r p r M cr 0 JO d O 6` O O M t� u M r� �D M M M M y4 c%1 M cal d- •D}S 01 •D}S t� 0 }uawbeS odld v m o ,� a ui u. PROJECT STORM SEWER DESIGN Sheet—of • LOCATION 5co-rik Wim-Dscf- civil engineers planners surveyors esign (203) 291-8755 DESIGN )0 !49 DATE 6115(,99 rofessionais inc. DESIGED BY 55P CHECKED BY south windsor, ct. 06074 eniD/� A � Q Q 0 0 O 0 edld UI pDaH s• 0 N ' � r7 �• r r A}IoDdDO Mold C; oo c0 wnwlxDV4 � � ao A ooe N i- N aB JOnd `� - �- �°' 0% rj a o l$ o o q 0 adld 10 u}6ua-I a dot uD 1 P azIS edict a ;n �n � in c r. cJ r- W ISAs ul MoIj � O N \ N N (ID}UIDN N N '`r v t gf wa}sAS ul 0 to I Od 40 Wn$ s ulsng u0}DO 6UIaa}u3 to ® `i' a Cd (-UIW) GWLL =° o pa}Dlnwnooy `t n a a odidl •uweWil s rt ('UIW) a0 ;alul o} awil N o a S CIF •g•0 01 •8•0 Ux to vjo to CA *[)Is O} 'D}$ v}uawbaS odld DZjwrz JUN 4 1996 DESIGN PROFESSIONALS Inc. South Windsor 165 South Satellite Road INLAND WETLANDS AGENG`(J South Windsor, Connecticut 06074 coNSERVArtoN COMMISSIOr4 Hydrologic Study COLLINS CROSSING Sullivan Ave. -Nevers Road SouthWindsor, Connecticut May 30,1996 DESIGN PROFESSIONALS Inc. 165 South Satellite Road South Windsor, Connecticut 06074 TABLE OF CONTENTS Topic Page Introduction 3 Catch Basin Drainage Areas Gutter Flow Analysis :3 7 Culvert Analysis �lD z INTRODUCTION The following is a Storm Water Drainage Analysis for the proposed site development of Collins Crossing. The site is located between the east side of Sullivan Avenue and the west side of Nevers Road in South Windsor, Ct.. The object of the hydrologic study was to size the proposed stormwater drainage system to adequately collect and convey the stormwater runoff for a storm with a return frequency equal to 10 years. The on-site stormwater drainage system is comprised of a series of catch basins which introduce stormwater into Plum Gulley Brook on the eastern site of the site near Nevers Road. The axiom of design used in the hydrologic study was the Rational and Method. The following pages contain the calculations involved in the storm water drainage system design. The determinations of the peak rates of storm water runoff adheres to the methods suggested in the Connecticut Soil Erosion and Sediment Control Guidelines. 3 Catch Basin Drainaize Areas ------------ / c6 z , I 1 1 7 0 CB ll i O \ 1 YD 20 CB`20A POR/tR BNC IWFRMY S �' 1 1 -'M W 01 SOU7f/WNOSCWP LOLL/N5 11'- , SOU1N WMMOR MW SCHOCL ,._...... q I. _ I I � CB;46 \ ------ ----- --- - 1� I' ' I / I - - _ -Fes•-.�.� DRAINAGE AREA MAP N. T.S. �A .. t a. Drainage Area : Q,Z7acres b. Composite Coefficient of Runoff ; Impervious Area c=0.90 A= 0*17 Grass and Landscape Area c acres = D.�O A= (�. �b acres avg (Qc Z•7`> ACavg = Du 17 . f c . Time of Concentration : Type of Flow Length Slope Velocity Time (ft . ) ( %) ( ft . /sec . ) (min. ) Overland 64xA% Overland tc ._ /�.Z Mfg. Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 25 7 SO 100 d . Peak Rate of Runoff Q = i (ACavg) Qi 0 = 0.70 GG� 925 = I . Q. Z, a . Drainage Area : Q,1bacres b . Composite Coefficient of Runoff Impervious Area c=0.90 A= 0* 11 Grass and Landscape Area c- acres 0.20 A= �,�'7' acres Cavg = ____-___ __ _ -- ------ = 0-4 ACavg c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M (ft . /sec . ) (min. ) Overland 6,4"* Q0 �- Overland tc = q. Return Period Intensity ( i ) (years) ( in. /hr . ) 2 25 50 100 d . Peak Rate of Runoff Q = i (ACavq 1 (21 (225 - a . Drainage Area :0,f3 acres b. Composite Coefficient of Runoff : Impervious Area c=0.90 A= acres Grass and Landscape Area c=6, iO A- - D.Z3 acres C avg - .__._____ ____ _ All ACavq c . Time of Concentration ; Type of Flow Length 'Slope Velocity Time (ft . ) ( %) (ft . /sec . ) (min. ) Overland 6t2AA9- /60 Overland tc Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 25 SO 100 d. Peak Rate of Runoff Q = i (ACavg) Q10 = �• �� cFS (225 = 7 a . Drainage Area :�J,�� acres b. Composite Coefficient of Runoff Impervious Area c=0.90 A= 40./0 Grass and Landscape Area acres c= O..Zd A= Q./(o acres C a�9 = ..__ fc.c1 ACa`,g = 0,17 C . Time of Concentration Type of Flow Length Slope Velocity elocity Time (ft . ) (%) (ft . /sec . ) (min. ) Overland e-&44s , ?O A M O Overland 'pVtX.T zocr A0 Q 7.G 7, tc l�• N�t�. Return Period Intensity ( i ) (years) ( in: /hr . ) 2 10 25 50 100 d . Peak Rate of Runoff 0 = i (ACav ) 9 Q10 �5 '•. 025 = 8 a . Drainage Area :p.3i/acres b. Composite Coefficient of Runoff : Impervious Area c=0.90 A= Grass and Landscape Area acres c= O.ZO A= Zz� acres ICI (O,�10 ) (D.tl ) + (D.ZO ) (0.Z3) avg ACavg c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) ( %) (ft . /sec . ) (min. ) Overland 6,cAAS 401!56 Overland tc = /4 Return Period Intensity ( i ) (years) 2 10 25 50 100 d . Peak Rate of Runoff 0 = i (ACav ) g (225 = L� a. Drainage Area :D,�� acres b. Composite Coefficient of Runoff Impervious Area c=0.90 A= 0,1 Grass and Landscape Area � acres c= O,ZO A= j�,�7 acres Cavg ACavg = D,W C . Time of Concentration ; Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland CteasS �y� ?. 1D�8 Overland tc A a���trAl, / Return Period Intensity ( i > ( years) ( in. /hr . ) 2 10 25 `- 50 100 d. Peak Rate of Runoff Q = i (ACaVg) 010 = �• Q C.F,S. %5 = /O r ? + �Q 1 .. a . Drainage Area : 0,3*3acres b . Compos'ite Coefficient of Runoff Impervious Area c=0.90 A= Grass and Landscape Area c= acres d.ZO A= o./q acres C a v g ACa`g C . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M (ft . /sec . ) (min. ) Overland 6�AO51 60 ,0 Overland Pun1.r 56 tc 7 M t^-) /� 7 Return Period Intensity ( i ) (years) ( in. /hr . ) 2 25 50 100 d . Peak Rate of Runoff Q = i (ACavg) Qlo = 0-7 GF` Q25 = a . Drainage Area :,0,03 acres b. Composite Coefficient of Runoff ; Impervious Area c=0.90 A= D. O/!�Grass and Landscape Area acres c- D.ZcO A= O,O�� acres + (0,ZO ) (0.01�5 avg ACavg C . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland Overland tc ,� N(/,4j, Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 6.2 25 50 100 d . Peak Rate of Runoff Q = i (ACavg ' (110 (225 = f a. Drainage Area :0,0� acres b . Composite Coefficient of Runoff : Impervious Area c=0.90 A=o.L>Z, acres Grass and Landscape Area c=D•Z0 A= p,p� acres C a v g = _-_--------- - d. 7 - ACa`'g c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) (%) ( ft . /sec . ) (min. ) Overland Overland Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 6.2 25 50 100 d . Peak Rate of Runoff : Q = i (ACavg) 010 = 025 = 1 � i a . Drainage Area .: U.IZacres b . Composite Coefficient of Runoff Impervious Area c=0.90 A= o.oq Grass and Landscape Area acres c= O.Zo A= p.o'S acres t o.90> ( 0.0Q) + ( O.Zo) ( 6.03) Cavg = --__. ________�__- 0.73 ACavg C . Time of Concentration : Type of Flow Length Slope Velocity Time (ft . ) . ( %) ( ft . /sec . ) (min. ) Overland 'ivr4T` �Zv `p � 0 Overland tc Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 50 100 d. Peak Rate of Runoff Q = i (ACavg) (110 (225 = tq i a. Drainage Area : 0.7� acres b . Composite Coefficient of Runoff Impervious Area c=0.90 A= D.Og Grass and Landscape Area acres Y�ooz>5 c= d.ZO A= UL,rz, acres G= O./S �= D•t Ac.e�s aVq ACavg = D•ZO C . Time of Concentration Type of Plow Length slope Velocity Time ( ft . ) M ( ft . /sec . ) (min. ) Overland W00,0C f/p S.O Overland � q l(00 g� Ov�Qc.aN� I��MZ lqo A p IZ: ,` z.o / Return Period Intensity ( i ) ZS.G (years) ( in. /hr . ) 2 10 25 50 100 d . Peak Rate of Runoff Q = i (ACavg) (110 = 025 = l-5 . i h10. a. Drainage Area : p,08 acres b. Composite Coefficient of Runoff Impervious Area c=0.90 A= acres Grass and Landscape Area c= A= 0,03 acres C a vg = -___.___ ____�_ (O, ACavg C . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland pvKT' /.,/U /, 0 Z,0 Overland 1.17 Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 50 100 d. Peak Rate of Runoff Q = i (ACavg) Q10 = �. / . Gam. �. Q25 = !tv i 15 a . Drainage Area :D.z3 acres b . Composite Coefficient of Runoff : Impervious Area c=0.90 A= Q,pAI Grass and Landscape Area c acres h�oo.ra5 -l9.Z0 A= D.O(o acres Ac eES C a v g ACavg = 0.07 c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M (ft . /sec . ) (min. ) Overland taoo-pg C1 D 7 & /Z.7 Overland d.2,a55 30 A 7 t c = Z.D 6- 7 WAI Return Period Intensity ( i ) ( (years) ( in. /hr . ) 2 10 6 3,� 25 50 100 d. Peak Rate of Runoff 0 = 1 (ACavg) 010 = (125 = 17 - i 3 lAt a . Drainage Area : O.D7acres b. Composite Coefficient of Runoff Impervious Area c=0.90 A= O Grass and Landscape Area c= acres 0.Z0 A= O.b� acres (�.0a) (a.oy) + (D.zo)avg (O.a?� 4A07:) ACavg c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland 'i VP T' /30 l O Overland tc S. 0 14 rA. Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 6.2 25 50 100 ` d. Peak Rate of Runoff Q = i (ACavg) Q25 l � a. Drainage Area �Q,J acres b. Composite Coefficient of Runoff : Impervious Area c=0.90 A_ Grass and Landscape Area c= O. Z _O A= p.0 7 acres 07 acres (0,07 ) + ( D,ZO ) (&o7 > ACavg = Q. 0 c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) ( % ) ( ft . /sec . ) (min. ) Overland pvM,--k �Od 1.d p X (, 7 Overland Return Period Intensity ( i ) (years) ( in. /hr . ) * 2 10 6.2 25 SO 100 d . Peak Rate of Runoff Q = i (ACavg O10 = �•� C F� ` 1225 = .. i 3 , a . Drainage Area :0?17, acres b . Composite Coefficient of Runoff Impervious Area Grass and Landscape Area c=0-90 A= O,O$ acres c=D.ZO A= D,O'� acres ( O,qo ) (0.08) + ( 020 ) ACaVg = 0.0 C . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) ( %) ( ft . /sec . ) (min. ) Overland 'Pamir ZZO l O 2.� X .3 Overland tc - '` 50 Mrs. Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 6.2 25 SO 100 d. Peak Rate of Runo ff ; Q = 1 (ACavg) 010 025 = zD i /�.O• 17 a . Drainage Area :d,U,racres b . Composite Coefficient of Runoff ; Impervious Area Grass and Landscape Area c=0.90 A= D,4,� acres c= 0,Zo A= 0.01 acres avg Q. 7-3 c � ) ACavg c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M (ft . /sec . ) (min. ) Overland Pvir ,5/ A0 Z p Overland t c Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 50 100 d . Peak Rate of Runoff S Q = i (ACavg) Ql0 = �./ rF6, + 1125 = i r Q �• C. jJo �0. �Gj ' a. Drainage Area ;0,6A/ acres s b. Composite Coefficient of Runoff ; Impervious Area Grass and Landscape Area c=0.90 A=D,O�rj acres c-D.ZO A= 0.0( acres a vg - ---•-•--_�____ _�_ 0,73 ACavg c . Time of Concentration Type of Flow Length Slope Velocity Time ( ft . ) M (ft . /sec . ) (min. ) Overland Vvei'r• /.O Z.O Overland Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 SO 100 d. Peak Rate of Runoff Q = i (ACavg) Q25 = a . Drainage Area :0,01 acres b . Composite Coefficient of Runoff : Impervious Area Grass and Landscape Area c=0-90 A= D.D(o acres c'O.ZO A= Oro3 acres d•ow + (O.Zo ) (0,03) avg ACavg c . Time of Concentration Type of Plow Length Slope Velocity Time (ft . ) ( % ) ( ft . /sec . ) (min. ) Overland pvMT f00 / O Z,0 Overland tc = �a Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 6.2 25 50 100 d. Peak Rate of Runoff : Q = i (ACavg) 010 = O•�� �Fz,.� 1125 = a . Drainage Area. b. Composite Coefficient of Runoff Impervious Area c=0.90 A= O,O Grass and Landscape Area a acres c= O.ZO A= D,dQg acres Cavg ACavg C . Time of Concentration ; Type of Flow Length Slope Velocity Time (ft . ) M (ft . /sec . ) (min. ) Overland PvM; /15 /10 Overland tc .O Meg(. Return Period Intensity ( f ) ( years) ( in. /hr . ) 2 10 6.2 25 SO 100 d . Peak Rate of Runoff Q = i (ACavg) 010 = ©• CA6, (125 = z ft a tjo. a . Drainage Area. acres ' b . Composite Coefficient of Runoff s Impervious Area Grass and Landscape Area c=0.90 A= Q,O3 acres c- d.ZO A= 0.07 acres avg Acavy ' s C . Time of Concentration Type of Flow Length ,Slope Velocity Time ( ft . ) M ( ft . /sec . ) (min. ) Overland f1vo r Over I and �'�' D•7 tc = < 5.0 NIrA Return Period Intensity ( i ) ( years) ( in./hr . ) 2 10 6.2 25 50 100 d. Peak Rate of Runoff 0 = i (ACavg) (125 = Z 6 a YArzt>. A uJ /110. 72-0 a . Drainage Area. �Gj �.� acres b. Composite Coefficient of Runoff s i Impervious Area Grass and Landscape Area c=0.90 A= O. ly acres 3JoouS c= Azo A= 465 acres (o.Rd ) ( a Cavg ACaV9 = �•7 J c . Time of Concentration Type of Flow Length Slope Velocity Time ( ft . ) ( %) (ft . /sec . ) (min. ) Overland G5 yoo S,(o �g• Overland tr V �B•� M�n(. Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 25 50 100 d . Peak Rate of Runoff Q = i (ACavg) Q10 925 = �T-:-> �0 �a a. Drainage Area. :/ ?j� acres b. Composite Coefficient of Runoff d Impervious Area Grass and Landscape Area c=0.90 A= �•p& acres c= Q,ZO A= /Z'� acres (D•40 > (O.og) Cavg AC avg = ©•3Z c . Time of Concentration : Type of Flow g Len th Slope Velocity Time (ft . ) ( %) ( ft . /sec . ) (min. ) Overland z7b Z•,t�/ f8r� Overland /! t� = �8•D M,til. Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 t 3a 2s 7Y� so 100 d. Peak Rate of Runoff Q = i (ACav ) g (210 025 - Z 7 .s AO. Zj ' . ' I 1 a. Drainage Area. : 0 l�j acres b. Composite Coefficient of Runoff i 3 Impervious Area c=0.90 A= Grass and Landscape Area �•b acres i c=0.Z0 A= 0.07 acres avg ACaVg - to.D 7 c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) (% ) ( ft . /sec . ) (min. ) Overland N*'47- 100 /•D Overland dre-dtiS 70 1610 t c 8. po A -- Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 ' 25 SO 100 d . "Peak Rate of Runoff 0 = i (Acavg) a10 = 0-37. GF� '•. (225 = a . Drainage Area. :49.14', acres b . Composite Coefficient of Runoff ; Impervious Area c=0.90 A= 0,61 acres Grass and Landscape Area c= 41Z0 A- ` 0,05 acres C a v g ACavg c . Time of Concentration Type of Plow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland rvjwr /g,O Overland tc Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 50 100 d. Peak Rate of Runoff Q = i (ACavg) (210 = O. �1(o CPS '. (225 = -zq H a. Drainage Area. : dZ�acres b . Composite Coefficient of Runoff : Impervious Area c=0. 90 A= 047 Grass and Landscape Area acres c'0.20 A= O.O$ acres (0.17 ) + (D.ZO > (O,o$) av g - --•-_._.____._�_ ___-- __�__ _ ACavg _ Q. 1*7 c . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland !„ A0 �D z•d -S Overland 'PvMT t - '�. 0 Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 25 50 100 d . Peak Rate of Runoff : Q = i (ACavg) 010 (225 = r a �• Lam. � /�v. �(�, . a. Drainage Area. , )A)acres b. Composite Coefficient of Runoff r Impervious Area c=0.90 A= O•Zy acres Grass and Landscape Area c= 0•ZO A= Q�/� acres avg ACavg C . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) ( % ) ( ft . /sec . ) (min. ) Overland 6f-A*5, /b0 46 j ,0 Overland 1RVnT � �•g O.(v6 tc Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 r ,/ 253 50 100 d . Peak Rate of Runoff Q = i (ACavg) D10 = (225 Art a . Drainage Area. :A Z/ atrer, b . Composite Coefficient of Runoff Impervious Area Grass and Landscape Area c-0.90 A= d-/3 acres c= o-Za A= 0.02) acres (D.(� ) + ( D,Zo) (0,08) avg ACaVq . f C . Time of Concentration Type of Flow Length `Slope Velocity Time (ft . ) ( Z ) ( ft . /sec . ) (min. ) Overland rj� l5 ��. Overland SOS Z,O Co 3 tc Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 25 SO 100 ` d . Peak Rate of Runoff : Q = i (ACav ) 9 010 = 925 = Y a . Drainage Area. :0.1� acres b. Composite Coefficient of Runoff : Impervious Area c=0.90 A= 0,0 Grass and Landscape Area 7 acres c= O,ZO A= D.O(Q acres avg ACavg C . Time of Concentration Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland G--Rd,,-s 1s;0 Z,O q. Overland pvp,.T tc Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 10 25 50 100 d. Peak Rate of Runoff ; / 0 = i (ACavg) O10 - �•/fd «� (225 = -5 3 �• �- 11�0. a. Drainage Area. -0,25 acres b. Composite Coefficient of Runoff : s Impervious Area Grass and Landscape Area c=0.90 A= O./� acres c= O.ZO A= O.oA/ acres Ca - (o•Qb ) (D./R ) Or / 7 �6.z 3t) ACa`,g - D. 8 c . Time of Concentration ; Type of Flow Length Slope Velocity Time (ft . ) ( % ) ( ft . /sec . ) (min. ) Overland 7avmr Xd Q 1.�7 Overland w �" t� Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 SO 100 d. Peak Rate of Runoff : Q = i (ACavg) 025 = 3 i i a. Drainage Area. ;D•Z� acrps b. Composite Coefficient of Runoff : Impervious Area c=0.90 A= °. Grass and Landscape Area Z� acres . c` O,ZO A= 6,08 acres. Cav9 = .____...._______________- AC avg C . Time of Concentration ; 's Type of Flow Length Slope Velocity Time (ft , > ( % ) ( ft . /sec . ) (min. ) Overland pvoA r Z.O. Overland Return Period Intensity ( i ) (years) ( in. /hr . ) 2 10 6.2 25 50 100 d . Peak Ra te of Runoff ; Q = i (ACav ) 9 010 = x (225 = M�11 �A• �r Q, �I i a. Drainage Area. : Q,'j�acres b. Composite Coefficient of Runoff ; Impervious Area' Grass and Landscape Area c-0.9O A= D.Z�� acres . c- O•ZO A= acres C (O.ZY ) + (O.ZD (o. ) a v g ^___— ACavg = D.Zit ' F C . Time of Concentration ; Type of Flow Length Slope Velocity Time (ft . ) M ( ft . /sec . ) (min. ) Overland G e-44-1, (yam' 40 Over 1 and P,yhr 30 / O ' Z.0 Return Period Intensity ( 1 ) ( years) 2 25 50 100 s d . Peak Rate of Runoff Q = i (ACavg) (225 Gutter Flow Analysis S7 r% v OD hilet. SLation and Offset -0— Time W TnIet IL Q -0- Gj Area In Acres A V4 6 b -U- ------ RLIIIOff Coe ffi.Cletit- (1, P, o 0 Sj q 0 bt 0 VA :r- AC 0 E Stir" of I h 67 C> C> 0 �7o 5> bo 0 _t4 V. GI- -I b -- PaInfRainfallTnLensity - 1 4, Cr 6D CIO * - Q to TnIet \Sx S-S\ v �- 1-Ij, (c.F.S. Ab 0 Er. 0 % IN Grade of GuLter CO 0 ID 0 Op 0 6' � t4 0 0 (D (IN o Z, aCross SloVe-of kN L4 ta 0 0 0 Shoulder kA w U14 L" GI O IZ, � tl- f", IS 4- ♦ lz� O, t:, Depth-of Fla,, -i at Gutter (Fr) WIdUt of Fla-, (Fr) QN, N tr N Q Bypassing Inlet, 0 � � � O � — O O r� o AC Bypassing TnIet C� 1oO A(: Entering Catch % N N N N a v v tr1 t7 Basin P2090 13 "OsImim tonos 'peoi ptjtj43j)q 161? 'spuoissojo WISE) 0 Sjj)atjjfi4J,) I!AI3 ■ V?i it fillet: 44 .m_ - i<- �-- l� Station and Offset Time Lo, Tn1 et• N Gj Area In Acres - A ro — _ , W Runoff Coeffi.ci.eft- C o cy - - - ,� — � _- 0 AL JQP — Ac. o p — --- 1 1 � b �"' Srun of AC O o 0 4 a .� z3A , b o O N ,t 'Total PC — - -'� c� ttainfall T,1t.ensl.Ly - T to Tn1eL- 11 d (C.F.S.) O N I Q 0 U-- O `a N 9 - Ci 0 p A O p © `? Grade of Gutter J Q O IV O _ © Q _� . — o o G Cross Slope of O O P W W P ' ' ShoW der LN O O 1CIN4 O ^� Depth-of Flan ' at Gutter (Fr) p ;p, ( 0 1 J w FlldL-h of Fla•I (Fr) Q bypassing Inlet. O p p p c" AC bypassing Tnlet y1 Vi o A od o oao u 000a �-. ,�. 1t� U, Cantering Catch N V► 0- O O O O O _ -- Basin i n r PION 1:1 'JOSIMIM 11111os -Pee j 11U1314-mq 160 'Ou.I 'sjDuoissaJoa StiLV-PP9 (VOL) U�J�Sa S.WIMUlcl • slaaulfiva I!AIO �N�x SNc77p� �,�3POUd ■ ■ Culvert Analysis jI G_ �i� �; CO a � � •— Line 'Segment (Station to Station) s� • PN Time to Inlet (mina i o ( w Time in Pipe (min.) eA N N N .p Accumulated-Time' (mina O v O O O O v C�i Al Entering Catch lU v N W p J 4 Basin • � � O O O p b p Sum of Al in System U1 s �► u1 t►� l?� ;�. ;� -Z -4 Rainfall Inten4ity(in,/ 1, ••a •c. _ . m Q in System (c.f.s.) N• � � N� Lh U► lA lZ1 11ti Ur �� cD Pipe Size & Type V` d V IV N � p Length of Pipe (ft) TI © o QO\ 0 0 0 = Slope (ft./fQ $A N a Velocit (f. • Average� S N mot+ ••mot 't'D v+ � 9 Y P.s a CA' CA �� � d� • i w Full Capacity (c#s) .A Headwater (f t.) 1.1Z, o u o 0 0 � , 0 0 o b o v b o N n a 10 ION IONS :Aq pojo�y0 olnoa uMO.L NOIS30 16131SA H M �U �' Line 'Segment r a '� fi 6� (Station to Station) ^ � b a a v r o b N Time to Inlet (min) I I 11 J, 6 cw Time in Pipe (min.) to .4 Accumulated. Time* , (mina ; Al Entering Catch o b o 0 0 �' Basin cn s w N Sum of Al in System -4 Rainfall IntengityC h) CO Z w Q in System ti ch Ci lA 1A t1�, 111 w Pipe Size & Type V• Ir VU NO 6 d o p Length of Pipe (ft) 0 0 0 0 . 0 0 o O p s d b o o N o 0 0 _ Slope- (ft./ft) Average Velocity(tp.sj w Full Capacity (cfs) A Headwater (f t.) ' O O 4 O b L 'n ;0 VN IONS Mjuij :Aq pejo;;y3 elnoa '' uMol b2 5- NJIS30 W3iSAS a M _ -- Line 'Segment b� � 6' . W (► y N a (Station to Station) b b N s N Time to Inlet (min) a o y, w Time in Pipe (min.) ,. N N *a Accumulated-.Time, ono a N C� (min) o A I Entering Catch a.. % J % cn Basin m Sum of Al in System tti iy •v Rainfall Intengity(inh tX� �M ul _ :c, v N oo Q in System (c.f.s.) to Pipe Size & Type � C• O � N N O O NJ d p Length of Pipe (ftaH • it � �t Ti ; � i O 4 Slope- (ft./ft) �1 -3 to 161 as v N Averoge VelocityUp.$) ' ° (A Full Capacity (cts) W -c Headwater (f t.) ' 0 o b o o Cn 'n 0 0 a d 10 'oN 1004S :�tq pe�a�yQ 81noa uMo1 b� s ��/ -7N i X V 1-77 i NJIS30 W31SAS a M 05 { — Line 'Segment 1J 1P. U v (Station to Station) s n -�� N Time to Inlet (mina a w Time in Pipe (min.) Accumulated.-Time' , O p G (min) O • p 6 0 A I Entering Catch W O N N S Basin _ • t.� fA w °� an Sum of Al in System -j Rainfall lntenqity(inh14 N -H N W Q ,d O bF :� a' _ �p co Q in System (c.f.s.) to Ch �� t�`i tTi ; U'- Si I> �• �= cn Pipe Size & Type �'�► N o (P 0 C, p Length of Pipe (fta G fo C. O O © O 0 p o 0 0 0 0 0 0 = Slope (ft./ft.) O O C► `� � G -G � ry Average Velocity(fps) Full Capacity (cfs) p> Headwater (f Q ' c 1.0 Q o 0 t7 0 0 4 0 0 ;o VN IONS :Aq pe�oQyQ alnoa uMol 9b 2 -7d � r NJIS30 MiSAS H2M29 _ _ � O,c�7'L�T �PAT£GT7dItI� ii 1 `44eCD TF,Ak YCAC �.�"rc 4C'1ZCQAJe-4,- y - AZ G i ZS 3.75' ZD.S FT _ /Z,a XooeMAe— 'rQEPyN. ZS:A)&:Tlk = FT, G1 d.oL .�(Q z0 raa" (-8le — Ilzlo y� MEMORADUM To: IWC/CC From: Jeffrey Folger - Zoning/Wetlands Enforcement Officer Re: Determination of significant activity on Collins Crossing Subdivision and Senior Residence. Nevers Road. Date: June 4, 1996 Application # 96-31P proposes to fill or alter approximately 7800 square feet of wetland and alter 150 linear feet of watercourse for the purpose of creating an entrance to a proposed Senior Residence and 10 lot subdivision. This activity would meet the criteria of a significant activity under section 2.1w of the town wetland regulations. A determination of a significant activity would require a public hearing to be scheduled. CC. Director of Planning Town Engineer Design Professionals ■ ,?esigoofessionals, inc. June 5, 1996 ■ civil engineers • planners * surveyors Project No. 95-845 COLLINS CROSSING Total Site Size= 30.78 Acres Site Location: Between Sullivan Avenue&Nevers Road, Southerly of South Windsor High School Application Summary Conventional Subdivision: Ten new luxury home building lots, many with commanding views of the Connecticut River Valley, to be called "Sunrise View Estates," along with two new public streets (Collins Crossing and Sunrise Lane), and creation of five parcels (A&B, creating 4.84 acres of open space along Nevers Road; and C,D,&E, for three Senior Residence Developments). Site Plans/ Special Exceptions: Collins Crossing- Twenty attached senior condominiums in four buildings to be called "Collins Crossing/Senior Residence Development", on a 6.23 acre site across from Nevers Road Park. All homes will feature one-floor living, two bedrooms, a full basement (some with walk-out), and an attached garage. Collins Crossing SRD will be served by a private street. This development is similar to the "Porter's Share/ Senior Residence Development" on Route 30. Collins Hill I- Seven detached senior condominiums to be called "Collins Hill I/Senior Residence Development", on a 3.15 acre site off Sullivan Avenue. All homes will feature one-floor living, two bedrooms, a full basement, and an attached garage. Collins Hill I SRD will be served by a private street. Collins Hill II - Eleven detached senior condominiums to be called "Collins Hill II/ Senior Residence Development", on a 4.78 acre site off Sullivan Avenue. All homes will feature one-floor living, two bedrooms, a full basement, and an attached garage. Collins Hill II SRD will be served by a private street. 165 South Satellite Road, South Windsor, CT 06074 • (203) 291-8755 • FAX: (203) 291-8757 DESIGN PROFESSIONALS Inc. 165 South Satellite Road 1 South Windsor, Connecticut 06074 Hydrologic Study �.. COLLINS CROSSING Sullivan Ave. - Nevers Road ' SouthWindsor, Connecticut TUNE 18,1996 t r. 1 INTRODUCTION Collins Crossing is a proposed residential project to be comprised of approximately 36 units of Senior Housing and a ten—lot single family residential subdivision. The property is 31 t acres in size and is located immediately south of the South Windsor High School and has frontage on both Sullivan Avenue and Nevers Road. Approximately one—half of the parcel will drain towards Sullivan Avenue (Western End) ' and the other half to Plum Gully Brook at Nevers Road (Eastern End). A stormwater detention basin is proposed on the Sullivan Avenue side to provide attenuation of the runoff prior to final discharge into the Sullivan Avenue drainage system. No stormwater detention is being proposed for the eastern portion (Nevers Road Side) of the site ' which discharges into Plum Gully Brook, since the peak flow from surface runoff generated from the proposed development would occur well in advance of the peak for the overall watershed of the brook (a separate detailed analysis has been done and previously ' submitted). Several proposed drywells will be utilized in the southwestern corner of the site (Sullivan Avenue Side) and are designed as retention structures that will collect and convey stormwater runoff through recharge. ' DRAINAGE ANALYSIS I The drainage analysis performed was done using the Rational Method to calculate ' design discharges. Storm frequencies analyzed are 2,10,25,50 and 100—year storm events. The detention basin and drywell stage/storage and stage/discharge data were computed using BasinA software. ' Topography was taken from the site development plans generated through a field survey. Existing pipe sizes and flow elevations were measured and watershed boundaries confirmed in the field. 100 scale drainage area maps of the existing and proposed i watershed conditions have been included in this report. ' The proposed on—site storm sewer system has been designed for a 10—year storm. Inflows for both the Sullivan Avenue and Nevers Road systems were computed using the Rational Method of Design. Pipe flow capacities were computed using the Manning Formula. ' The detention basin was designed to reduce peak outflows to less than conditions that exist now. The actual basin sizing and outlet structures were designed with BasinA. The outlet structure utilizes a 6 inch diameter circular orifice as a low level outlet. ' The high level outfall is a single grate catch basin structure that acts as an emergency spillway while the low level outlet is equipped with a trash rack. The proposed on—site drywells have been designed to accommodate the entire runoff volume reaching that structure for a 100—year storm event, less the volume lost through ' exfiltration during the storm event. The assumption was made during the design of the detention basin and drywells that even for larger storm events, all flows generated in the watershed reach the catchment areas. Soil test results indicate a sandy soil with a ' Oermeability rate greater than 400 feet per day throughout the site. 1 SUMMARY ' The proposed development of the site can be accommodated utilizing the proposed drainage layout, detention basin and drywells. This stormwater utility design effectively ' minimizes the downstream impacts from increased runoff and erosion due to, site development. ' SUMMARY TABLE WESTERN SIDE—SULLIVAN AVE. ! ' PEAK FLOWS — CFS. STORM EVENT DETENTION BASIN OUTFLOW COMBINED OUTFLOW* EXISTING FLOWS i 2—YR 1.5 @ 1.13 HRS. 2.90 @ .40 HRS. 3.64 ' 10—YR 1.7 @ 1.16 HRS. 3.99 @ .40 HRS. 5.98 ' 25—YR 1.8 @ 1.17 HRS. 4.64 @ .40 HRS. 7.28 i 50—YR 1.9 @ 1.18 HRS. 5.01 @ .40 HRS. 8.06 ' 100—YR 2.6 @ 1.16 HRS. 5.44 @ .40 HRS. 9.10 ' * see combined flow hydrgraph sheets L Gutter Flow t Analysis vut.Wer r1c.r.i ru►ary ors PROJECT civil engineers • Irlanners �GiNs �IN( esign (203) 644-4795 ' TOWN rofessionals, inc.,�0 7 ut I iJT�Sp�, ■ , _.....___w 491 buckland road. south winclsor. cl 06074 utseq tialeJ buT.za:ltaa 3V O o 4 a o gaiuj buyssedAu Jv , o O I O p 4 Oto tA O ' 7aT11I bursseclCq t} i', CJ ci ( 4 D 31 a ( N N ao ooQa (aa) r�T.9 30 tIIPT[�l ;`; a i — — — ,� `S 4 T CQ 1110 3o it-Tclatl ` � 4 O O O o O 4 � ': ' GTtI/,T.�) to rrl icl — 0) —Io ..X ap j I t0q S . 1 M M rn sso-ID �' O o 0 0 0 o Q 4 Q o ca o a a o a o 0 0 4 O Sj p16 '� 0 4 cs O .10:1.1nO 30 ape.a;? 0 0 0 Q O Q o :, 4If o o' o o O N O 4 coI . N d cT �. 0 Cl 14 Q '� 0 t, g a u o 0 O 0 40 O Q laitlj Ol CO O -Z O a Q 4 6 4 O jr -- X:1-Tsua:Iti.I IlujulpH co a s o J'Lr 3 o Un►g %X, l o 1 o q a Q 1 — W Q 10 O V- K sa-IoV uy lea.zV ��, lr? K; th 1(1 0 4a- d 4 O O 4 4 Q El Cl' 0 q © o o 1��Tui1 awlL rv ` q oNA PlIE UU f-1 L'-1 S i- _ V �J ttil �1 01 tJ o4 0 CA U3 .4., 6h 4,- N fillet: IS Al 0 :-- Station and Offset k.),_ Time h3 TnIeL1 : GJ Area In Acres A Vi 0 k- Z a — "I RL1110ff C0effj.ci.edL- C. A)_ -- v _ — AN 76 t4 !p. 5�p QN q1 A IL 1> AC? zg?� o j _ _1�,, A Cr Stun of Ac C> N -1. Total PC 'C4 o ro-0 01) Rainfall YnLensl Ity Q to Inlet 4o � �" t� O o lO � ® p, c o ' 1(c.P.S.) S5 (AID S)t 1�0 1P 1- 0 � Grade of Gutter 11 IV 0 i> U) Cross Sioi�e of1 le U, w to Shoidder go. kJA U4 - j 1 I FIN rn Depth-of F I okj J. -4), at Gutter4 WIdLh of Floe (Fr) 60 0 (> A o ro P0 jqA Q Bypassing Inlet, -4 (C.F.S.) 01 BypassIng Inlet 0 1 ' Nh \34 (> AC Entering Catch 0- i> b, Basin mg P2090 13 ,10SPIJIM 111I)OS NMo,>; ' S6ZP-I,pg (coe) SIDUOISS010i Wise J!AM ,?�JD[-]�PO)Jd ry PROJECT GUTTER FLOW-AT" Sheet__of ' LOCATION. civil engineers planners -surveyor* *sign DESIGN STORM DATE rofessionals, Inc. (203) 291-8755 ' DESIGED BY _CHECKED BY south windsor. ct. 06074 ulsDg yo}DO a0 ul a r �o \o ON N m _ r _ 6ulae}u3 cor= q Ctn T � o cnr- � om � � � .o � � Qorr- cod o OBI N 0 0 0 0 0 — o O 0 0 0 0 s N 4 pr p }eiul • 6ulssDdKe 1n Ob' l of l l l l l l ooI I Io `v' I I Ioo I I o00 's•}'� }alul cJ o � � - 6uin 1Mo13 N ('})) M Vl 0 4 ® d=[cn MOIA JO LIMM(•};) ja}}n0 }D rrd0 4 rMOIL 1O y}daa N n o O0 r► �1 M 0 0 \D �P c .D 0 M � c� M M 01 M co cal 01 M 0 ctl (1) M c11 cal c/1 M M Nl c/t adolS ssoa0 O o a o o ® a a A .o 0 4 o Q 0 0 0 o a o 0 0 0 0 0 0 0 18}a}p� ;O Q O 0 0 O p Q j i . � PO c�j 0 (� f 0 0 0 d cn N O q O O o ' .s ;•O (b) Cn `j n tr `; On N NN ro n � N .oM � �J �I � rJ r 8 u O M O +f) �D r w O U �� v M } I I 13 — V 6 g 0 0 0 p O O Q 0 0 0 o O O 0 0 .a 0 0 Q O 0 0 f I ' (1) AlIsua}ul 00 � � cs q 0 � 0t t� C? t It tN t1 q tom! tJ � lam► 11) i; r j 0,% l I DJ UI D N �� �(i .n �ti v 9 Ui vD lb -4 1113101 o <►. ul � `r� c'0n ` o — o m Od - ooao0 o g oo — o0 0 0 — p WWI . dn a` 4` M 4 M c\ 6U)sD)dAG OV `O i t ° l o f l l o 1 1 1 'o 0 o Q l q 1 1 J Daly }alul ;o ao — O cA o Ob `o _� o Q 0 0 ® o o° 0 0 0 ° © `o q N ;ounN d rn 1� w �o crl v !f1 1n N G :o c— �n U1 r �rro a n se.toy ul — _ _ (y) DOJb+ "� � Q a 1 � 6 Q Q i D e � T- c� Cl) e� }aiul o} awl-L 10 !0 %A vl m 1) V1 l— Ul Ill In \A \1) y _ M) ON '8'0 <t Q ao tJ .o r a cfl 4` , .— � Mom- � M M (L to cA to �! da cif to 4 uo cl< cll d6 v r 4) lb IY I,i uX1 Culvert � nos �s�s 1 1 1 1 1 1 1 1 1 1 1 1 — Line 'Segment (Station to Station) s 'v ,� s� • :,�� N Time to inlet (mina t I o ® I w Time in Pipe (min.) � t .p Accumulated.Time- ' (mina Al Entering Catch ' p cn j ® Basin - ... . d p Q' 4 • 0 p i p G rn Sum of AlAI i System \S\ -4 Rainfall Intengity(in,/ .14 CD Q in System (c.f.s.) , . d �' w Pipe Size & Type t CAN �.' N t►' � Length of Pipe (ft) r 1 o o 0 0 0 ® o p = Slope (ft./ft) 0 0 o N t!ti p ' N Average Velocity(t:p•s� w Full Capacity (as) .A Headwater (f t.) ' 0 o g p o o on' ' 0 0 o b o a a o N o b a o o cr o 0 0 ;o 'ON IONSrdJUU ' :Aq pejo;aya elnoa h-L uMo1 -71VC- 'A2aIX SN)770� ' NJIS30 W31SA H M (� -- Line 'Segment (Station to Station) 'm s \ Nv t Inlet mi b d b a Time o l (min) � 1-4 cw Time in Pipe (min.) Accumulated.-Time- ' -44 O (mina d I O a Al Entering Catch 6 � N cn Basin _ ko N -� �°, ,Z r M Sum of AI in System S � � ' -4 Rainfall (in.)hc Inten it� y a7 Q in System (c.f.s.) ti to lR IA k N UA . ` d �- v " �% = w Pipe Size & Type O o o p Length of Pipe (fta 0 o d o .0 0S�, O © ® o o N o a = Slope (ft./ft) ® a o o t .n N ry Average Velocity(fp.$) — o w Full Capacity (cfs) CP .� i, Headwater (f to ' P o ' b Q a o b ?� f11 'n i s p a s o 10 -ON 1994S :Aq pejo;DyQ elnoa ° uMol b2 5 . NJIS30 W31SA b M r, ry M � � _ 5 r-- Line 'Segment -t lV (Station to Station) Time to Inlet (mina w Time in Pipe (min.) .p Accumulated.Time 0 (mina r CD ® o ° A! Entering Catch r % r Basin r b % w 4�) �.r3 G` Sum of Al in System W -4 Rainfall Intenkity(iaJ 4 :t- Or N m Q in System (c.f.sa � ' _. N N 0 w Pipe Size & Type N N -.. 'c• o � - r Length of Pipe M 4 0 - r p o 0 0 0 0 0 = Slope (ft./ft) ' -:Z -,S\ N Average Velocity(t:p.sa Full Capacity (cfs) ,A Headwater (f to ' C c o b o b o c> o c 'n o a o w 10 -ON 4094S , MIDU :Aq pelaQUO elnoa Z uMo1 b W 5 lidiucl TV —?cv i X N1-77 ' NJIS30 W31SAS H23MM GI NLine 'Segment ' (Station to Station) .1 b Time to Inlet (mina :ar 1 t I w Time in Pipe (min.) ' S CP W =S' .p Accumu lot ad. Time- d G G (mina ' O p d 0 O O Q p A I Entering Catch ' • p s • o S Basin - m Sum of Al in System UM Vj -4 Rainfall IntenkityGn./hc N !-I -j Nh m Q in System (c.f.s.) O �► , Ch w Pipe Size a Type v �`► N O o N 0 p Length of Pipe (fta Tx ,�• Slope (ft./fQ 74 N Average Velocity(fp.sa :� •,, -0 �, w Full Capacity (cfs) Headwater (f to ' IS' 5y 'V' O o a n o o ;o VN 1e04S , :Aq pelooyD elnoa c af� rr uMo1• 9b 2 "'?d =2M NI-» NJIS30 16131S), a M Ei{ rt Z 1 !i i i ) K � i , f{j 3.75' .. `f t ,zD.S FT '1 i 7 V/05) = zv,Z z (4 ZZ AV 5-7 (Zld- G4 = d,oL 8.�CQ 6, Zo fir" a�- L1"Ocg6c, PROJECT__ STORM SEWER DESIGN Sheet—of ' LOCATION civil engineers planners surveyors �51gn DESIGN STORM DATE rofesslonals, Inc. (203) 291-8755 DESIGED BY CHECKED BY south, Windsor, ct. 06074 _ r Q 4 O Q Q 4 Q Q Q Q p 0 adld (id POSH t ' ('s';'o) O Q 0 0 r► 0 r AllaodOO mold <r I �r d d •o <t r; d c�. �' cp wnwlxayy �o �; 00 vj m Vo (-' o A113019A cv % c1 c� cq ��.. �} Q d ap c� r; r r p m q 0 - V1 96O.Jany b' c%) N N N1 d 0 c0 d d' a olS c� �► p 0 O 4 4 o p o p o 4 flr-, edld o � Q ('}}) '� odA.L pua a a n a o n e Q e n o o Vole BzIS adld in ! e < r a a a s d a a il) _ "n N N `u1 N aN N N iA N N d1 N N N `In 00 dJ cA aq �' M In r '0O `t we}sAs ul mold _ r 0 0 � oN g000 � o nevi Qoo I ' �c}tsue}ul r rr r� IIDJuIDN d a 4- -4 -4 <r - .t ,� 4 -q � M M �i M 6 'd- d- d woleAS ul w r d 6` d r- p a '1 °\ 1n N �► Od to wnS p U o b° Q = — N Q ulsa8 uo}OO _ `� fiul.ie}u3 u� 0 C "�' O inr1 M Ar )` 3y q � o 0 0 (•ulw) QwLL' N `� o a cn `D 0 �� cn M pa;ainwnooy �'' M v► `J N N N N do 0 0 r ('ulw) �q ' edidulawll �' O © M Q ° 0 ° o o Q to to V) � � o CNN }eluluw o} awll N �n N c� �► n = m �� r 0 cp ' c .B.B o .B.B JO twK •a}S o} •d}S o �o to v �1 cQv "j � Q v cv}uaW6asadld � � e. PROJECT C� r�4i STORM SEWER DESIGN Sheet—of ' LOCATION civil engineers planners surveyors eSlgn (203) 291-8755 DESIGN STORM DATE rofesslonals, Inc. DESIGED BY CHECKED BY south wlndsor, ct. 06074 anlbAu, ".-' o 0 400 � 4 ooci QA cn • edid (I P00H A110Ddo0 molj d •n d � �n (n +n o m Q orj a` N �p wnwlxayy �o 00 � � rz � � qm AP 4 � A l l0 o leA N �} 0 cn C) in vj }} ems-- N �'► to M edoIs odld }0 4}6ua7 `� N .Qo azlS edld wa}sAs ut moid 00 rr -a r p — — N N I` O — o N a v; a m O ch (I) IIDJUIDZI �D d 4 -4 Kr -4 V) v 'o- M M `p M Vi M 4 M d1 we}s�tS ul w V1 o Q 4 Od I wnS 4 N M -4 M r^ Q d) o 0 c� ' UIsD13 1401DO _ ' 6ul.le}u3 0 o to a o M M Oy o 7 R (•Ulw) alull ' pa;Dlnwn00y `+ o `J r; V) r` , ulw 1 adid ui s)wll `o ' ('ulw}alul 01 8w1-L tV V) 1.0 o V) 1,0 U1 M 4 \1) \A N Vn V) \SQ � �n •BID 01 '8'0 `o Vl M M car t� cn d TIS O} TJS 0 �, �► op rn d+ c!J cQ 0 ' }uaw6aSadld � }� � "v� v v n v � av ai d o �. n 0. a 0- c� d u: `� PROJECT �. �Ci�..� STORM SEWER DESIGN Sheet—of ' LOCATION 1:5o0-riA Wtvneo civil engineers planners surveyors esign (203) 291-8755 DESIGN STORM_ io !IC DATE rofessionais, Inc. DESIGED BY ',S CHECKED BY south windsor, ct. 06074 ' e n bA U to d (U 4) ad ! ! PoaH ( s3a) M 4 r r a0 A}IondDj Mold , f; oo t0 11? wnwlxnyy �6 v <+' N = AlpoloA N 6\ °Q 6� t� r7 �1 a6daany v 4 .d- r 'S 0% r a oIS o o Q O 0 (•11) adld 10 41BUa-I o \ N w CL adrtl pua 9 azlS a d!d a ;n �n in wa}sAs Ut moli 00 © o N 1h ero N wa}sAS ul o op to Ob do wns UIsDB uo}b0 6UI U3 toIt Ob a I Q W (•ulw) awll :n o ' pa}alnwnooy o o M la adld ullw8wl1 M `O 0 "� q w uw }alUI o} awll N o o N S r z� •9•0 01 •9•0 Q � v -10 •b}S o} •a}S U a '� ' }u911169s adld r , i �+ v u p r$ a !� 0- OtJrf T9,0 l. CATCK, $ASk6 3'Z LL O.44 CFS7 CPS ?ti1_._'....A)piztALL_ Drs?r!L,= 1.25_T-T. ._._ 'I J 4/3 — ---- so .aZ 7.44 .--------- ' 1, C` _--l•1 cFs) /. Cl•'Ls)s/Z _._1.�s. _�C4�Q1P!� `JToN> _ �AMk'CG •�Z 3.86 _----- las L.ZS ----- -_ --- -- ------- - -------._.. ----- --, _—•s U�>e- -t rJ FT • ------ -- --- ------. -- _._..-- - --------- .... --------._. _ --- ' DETENTION BASIN � ANALYSIS � I ' CollliV'5 (;ka5:51AJ r ' z5vill-ow AvF-- AIEVE(zs go&> PSZGXr'o.�cC7 (.�N t�i'1.ir�N` ' ��P To C�'TFnaTio�J �,SiN a. Drainage Area : I(7 Z6 acres ,r b . Composite Coefficient of Runoff ; Impervious Area c=0.90 A= Z,'ZI1 acres ' Grass and Landscape Area c= O,Zo A= acres Reu's4( 1•��3 E= a.15 A= r'�.27 AC�Es ' _ ( .90 ) (Z.21-7 ) + ( .Zo Cavg ( 10.26) ' ACavg c . Time of Concentration Type of Flow Length Slope Velocity Time ( ft . ) ( %) ( ft . /sec . ) (min. ) Overland ' Overland t C = 19 rAj J. (CRJ T* "L-r)mr.-) ' Return Period Intensity ( i ) ( years) ( in. /hr . ) 10 Q Pr-At 25 Q.2 Q SO ' 100 5.1 I d. Peak Rate of Runoff : 19M•a sls --q AAE Q1 = 7.90 CF•5 Q = i (ACavg) 7�uf�W 1�KGRaP1i ' 010 = M.57 c> g Q25 = 15.06 CF5 aso= 16.SF� GFs �lOo' I$•31 GP5 i lb Number: `J -845 D?te: r:-;'a-,I i'esi4' H : J,IP Location: 1001N .'!!I+'t ii cr{rep hv! ,cri0ti0r Ltill.IN ul H ---- --- -- ------------------------ Desun FrOfessional5, Inc. 1 161 South Satellite Road Soutr, Windsor, C1 04 O'i4 Detention Basin Analvsis - 6ASINA ver,1,02 --------------------------------------------------------------------------- 8A ! M ANALYSIS =----------------------------- ,----f------ -i 11-P --,- f- Av ',- An A denotes Mat volt G-, r T,nii tec by ..verpn pnri rl Yec, hn ff a C indicates that e,?l I e= 4er? ronputed ;b-: n f.Qn1C�' "atr{C'7. evation at base of spllMv' ii*:,,.`_if) itial Pool Elevation-, ----------------------- No. Type fIoullnp Dc s rriptioi ' -Circ, orifice IIh-,5o Diponoter. f1°Yr?,f= b, "t l:f= 1,rii fioriz, br to 'tt tM uprt. e.°r 'tt,?= 4,4 Not Used Not il=.ed o lb Number: 9 -k4, Gate. 1.ie=1nn NV— jjp Location, BUUTH WI"IJOIlUH Uhe(ved h,r, Scrlption. 0[.L tN (kfJvblNfi --- -------- ---- ----------------------------------------------------- ------------------------------------------------------------------------- lI'Jtl°t #1 Ildt1et Kt LI!i$Irt C. iI.ImtI_t #q T_ta1 ' E1eV, piSC 33Y'7'- ?}l i ldrn� G1 -r arpe arse IUisc.`F.3rGa_ ft. C.t.S, 118.00 1.06 119.00 1,4' - -- - 1.42 ' 120.00 1,70 -- -- __ 1.70 0 121. 0 1,?b 1.?5 122,00 Z.16 i2.{)•7 -- 14.25 122.50 1r 11.64 lb Number: 9:-84b Date: b-18-96 [!-Ign Ny: P Location: 5UUTH WIN04LR L:hetked by f --- fstription: COLLINS CROSSING �torm:� v_ar -----------------------------------------------------------------. ----- BASIN ANALYSIS - ------- - --- ----------------------P-----------------------_--_-------- 111E AND 1 N1 L (JW L) A I A --------------------------------------- 'me starts at 0.000 tTS,t tl.me i tremant 0,1()u H-r, llaseflow is (1.00 r.fs. �URMANH PUINTS y I 4 1 H 1f1 ---------------- --------------- -- 10: 11.0 2.h 5.(1 ',:1 f,'j ) 7,`� i '' -"! L) b L:--^4.3 1.8 0.7 0,t} 010 O,0 010 t),0 0.0 0.(1 201 0,0 0,0 0.0 tl,(t 0.0 i).n (},o (),0 o,(? 010 1 Ot 0.0 0.0 0.0 010 0,0 ('.f? 0.0 (),00,t1 0.0 Ui 0.0 0.0 ti,i) 0.0 t),L ti,U M) 0,0 0,i! 6.0 0.;. . 0.0 0.0 0.0 0.0 0.0 ?.Cl (,tl 0,0 60: 0.0 010 0.0 0.0 0.0 (11 0 0.0 t?.0 0.0 0.0 ' '0: 0.0 0.0 0.0 010 010 010 t:},0 0.!) 0.0 0.0 01 0,0 0.0 M. (i,t) (1,0 0,o 0,0 0.0 (l,ii 0.0 90; 0.0 0.0 t1,0 0.0 0,0 0.0 0,0 (1,(; (!,0 f).0 10: 0,0 (1,0 0,(1 (1,(} i} t?.t? 0.0 ;,ti il.tl 0.0 Or 0.0 0.0 !1.0 0,0 I1,t) 010 0,?1 (i 0 O,j? 0.0 120( 0.0 0.0 it.0 0.0 (i,(1 (} o,t) rj.t:? ().0 0.0 0..0 0.0 f7.0 tj,L! 0,i? 0.0 0,0 010 (),t] (?,0 0,(t t),(? IbUi 0.0 U.0 t1,('} 1U; (.1,0 0.0 1), (t,r! tl,il r,+; tl,(i 010 0; 0,0 M 0,t} 190; 010 0.0 t1,0 (i,(: i? c? ti,(; (t,{; il,(i 010 0( 0,(! 0.0 0.0 fl; 0.(1 f}.0 0.0 0,0 0.0, ??.{i 0,0 (?,i1 0.0 UA 230: il,t/ 0.(i t (110 0,0 t}Rj? (?,ll ('} f),e} 260: 0.0 o.0 0.0 (l,j u. t? 1i 0.0 0.0 (1.(1 0.0 U.O f},{} i).t) (},t) f?,0 il,(1 (t �} n,n O,(1 290( 0.0 0.0 0.0 o,t) 0,(1 0.1) t I a Numbers 95-845 irate: L)7?zcn acation: SOUiH WINDSOR Ctferkad by: scriptions GOLLIN,:' ,:torms2 year ------ - --- ------------------------------------------------------------ ?> B A S I h ' doIu.ne V o I u m.e Storage Time, Inflow Outflow t'n Out VoIum2 Elev. (hrs) refs) -(cfs)-----(cf! _-__(cf)-- - -_ --- (rf)_ (ft.) - ------ ------- ------------ 0.00 0.OU 0,()!1 MO 2.4'i tI,30 4•`s� i<' 44() 1I6,6 0.20 4.9,1 0.4:) 1804 i1 11t}I 316,i6 0.30 7.4$ tt./5 4L15:? 317,51 0.40 1.90 If? i,4' ';118 118.Q5 0 S(i 141,3 10:11 1'8,4_ (),/0 7,yi ),3() 1 ?5q -.'' i '4"1 118.66 0.81) 7.78 1,3i 1817r, .416 1.`.°1Jo t ;,r85 ' 0 9t! 6.281 1,4c' )jb4 v lf)4 1 t l"y p 19.02 1.00 4,28 1,4E 3429 1a17 Iiv,l? I.10 1.79 I A_/ `368'7 119,18 1.20 0,67 1.47 2413t1 44f16 1y544 119.17 1.30 0.00 1,4k, 24Jll 5i!10 3j2Jl 115,14 1.411 0.00 1,455136 18734 pl' ,10 IrJO 0.O 1,4n 1,60 U Ou I.42 242 U iticy yi 1y r!1 1.70 0,vio 114! 4:-fQ IflP4 ? Iii 118.97 1.80 0.00 i.3'a 4'd i! ;83 1F-L7 ike.' ia,? _ 118.(38 2.00 G oi! , -, 2 ia,tHa HEI ,4E) 0 h tiU, . ,. :.. I ) 1.;.,`t •J, rests jtw�� y `t t,�t F,l 21 60 ,t,()') ;?U :211'll} 99 .74 C„111 r,(! „'.'' F'bf, 4 t nn l ll,a'. t v,26 M'.31i 3.40 0.00 1.11 ?4. i0 149a4 ??'±6 I15.31 3.5G G,00 1,it r424t` I '?4 x�1� 11u 2p 3.60 0.00 1.15 =4 �a 3.70 O.Ou 1 1q 2iJQj) tr lrt .s s,p tl 3.80 0.00 Illy 24 al! 16 6'..t,:; 4v 118,1' 3.90 0.00 1.11 24A'.b0 17t)08 1241 I18,1 l 4.00 0.00 1.10 24250 1740 6844 118,11 4.10 0.00 1.09 24250 17t99 6450 118,1'!ts 4.20 0.00 I,ti8 242:50 p 818'i 6061 118,04 ' 4.30 0.00 1.46 24 `_% Ib1l4 'h i1H.lii 4.40 0.1}0 I,02 24,0 1d`a:l `i i'i 11?.93 Y.50 Ei.00 t I1,'1 4 4.6t) U.t)t) E).'�!) 24 5+.) I�b41 ?k:}y 4,'U U.ill) t).N 24 i:j 1 -s`, 4'2'i) „t,i•,i 4.80 t),i}(i 0,80 2425') 2i)"f J3 i9y'i i l f..`_tk t9Umlipr; Y` i4 :i.aTr. 1n. t ` Location: SQUM w1^)'!9fiK tra O hv; GCr3�t3rn; I:CI1.1.1N )UII•;;:I+!P _.._ ----------------------------- VOlurp vr,j!,.p !+torpne lime Inflow 0!1ttlr,w In (1nt tlr,.wre c{av, (firs) ictsi (r.fs) trt? (rf) erfl ft.i �---------------- ------------------------------------------------ 4,90 U.ta(a 1,7`: 5"(1() 0 1(ii) 0.7(i raj 1I 4,'4 117,44 5.20 (1,u0 (!,6'C 4"(a 212b 1782 117.31 5,30 (1.00 a b-4 N-,v;V -;`j1N` ;-L4 ii7.25 J.6u ().au 0,4'14 -41(in lIl.U� .•*1 4 a,• r4 1 li.`i`s li7,Off ,(.)0 0, b, 10 u,f,:9 ta..31 4;":(a i'�?" i"7='t jic+ yob K. HO h„ill if,O!! 6,6") i, 6.30 Q.)i?) 11bv i,r b,ju' O.QQ i.)f r4",i 11 ,;3 11b.70 7,(lu I,0 u,t6 r' it < 71 fi79 11b.�N ' 1u u,UO 0,lb ta 11b,O Q0 0.00 t?,13 1t5() 23b,3- .74 llb.bb 7.du 010,l ia,12 4 ,`••,I i+l'l'1 ,J Iivab4 ' 7.4u 0.00 (J.I1 2415f; ;7b4 «�� 116.63 1.50 0.00 0,1(! 24 2b0 :8(3 447 116.62 7.60 O,UO 0.10 :.'4250 23339 411 11b.61 ' 7.70 0.00 0.09 24'?L5 ?:;.y12 378 116,bu 7.811? u,t?u u. !1! 42;(a u"2 347 116.59 I.' U1 412,,!.a 8.C!U u.()ti ;;,tat 24 yt! ;1:,'j: 'i4 11b. H mu 8.'Lt! u,Ut! ta,gb 242hI1 24p01 Z 4,j 116.57 8.3u (i,`)O Q,(!5 ;!u h0 vrt:'1 a'' il(?. :, ' 8.40 0 (if) u.u5 2425t? Z403'j 81 !ta n,t`tl 14 _,r! 40= 8,60 u.uu ?1(+.` 8180 t?.+)(! 0 03 '4"5(? '.1:a Mu 0,UU 0 015 4.;;ri 41 i ]l b..,4 9,10 (a u(.i to lit i4 ""14I;:,% 1t7 116R53 9.20 0.00 c4141 i,3il (a,+ill (i.'12 L'i ,At 24!i�1 '1.40 0,txi ±'.02 ;'`(! ;41`'t 9i 116,`2 4.50 U.i1(I 9.60 0.00 (l,ii: 2 4 2 b 0 41 i3 17 l lb,5'2 9.70 0,()t) 24 "aot ;a.14 rt 'i +.51 ' .1,80 (),()t? -o` .location: SUUN Wfmb UH .0 rzpti.on. CULLIhjS = -------------------------,---------- VC=tume Vr=I l;mfIr v:tr=rg ro Time Inflow !Mitt;=-iw it =i,I _,_;;:irF: 1e4. stirs) ltfsi ! 15 r,'t ! .t) trf f rtl tft,.1 - --------------------------------- ------ -------- - 9.90 0.(il) tl,01 i4'r°5=! 4 ai Uzi I140. 10.'20 0.00 0.01 L 'c",! 4'+:I;<.: 47 116.51 10.3u ()IOu U,(!1 ','4 ":?i '4;'i!J 10.40 0,00 0,01 242 .!? 14210 311 116-.51 RUUIING II<RMVIAIH) Paflk'MAtl_Y **** .!o iumher: Oeslgn by; .!,iu location: SWIM WINvIjDN Vflotion: Ltill?rl: 4 i5 ?t' _ -- ---- ---^------F----'------------------------------- af J A I _ tiU1" f1ANY U I) !' !- kA E I UN -e�❑�==c=❑_e==e_❑=co_=o❑=e_cc=c❑r_c❑ccac=cx_x=c❑===❑_cccr.-❑_==_c___=c❑c=❑ tea !:m Intlow* /,,I ft= il, .t to ?_ Flaai�um Uuttlou: I.b Its at I.Di h' 1"a um Wrap: YJ14'� eub:,c feet ?t t1ev"i m F, t�� Detention time: 2.2 hours. *��,kDUi1tIS Tfkl'l)fvr�ll,i h?!.Ikti�+!.'.'Y acre at 10,49 Inj Data File. G:tNYllN;!I+4uL:IpalllAf 1',:ij4`.;at Uutput Device: C: All tH4`,-r.txt Gu -' t interval: (p.l( It on control a.nterv-3I! It; : r i 1 1 ' Job Number: 9b-k 4'j U te: b 15 'ab Design by: JJp Location SUU14 WItdU l,l4 Checked by:--- Description; CIALINS CHOSSIN6 Storm:10 year - - ----------------------------------------- 8ASIN A N A L Y 6 1 S i I14E Ar1D I0F1 fl, W DATA --------------------------------------- ' Tsm? starts at `(,,!.! rrFS.f tlm? incre?ent MOO HF, haseflow ;.5 O,ov ct5. HYLRUGRApH PClO - 1 t a r y ? } --------------------------------------------------------------------------- 1!): E,.p 1 !,1 ?.[ t ! Is fill! j,it 20; o.o 010 o.ii o,n !i,V (l,1) +!..} il,ii i,f) i.,o 3W ill{) 0,,,) t),(,! O,0 0.o f.) . ' 40 it,0 },tl 0, {; .; i,(i ),(! illt! 0.o !),0 0.0 {}; 0,fi 0,S) t1,(' } Q t 0.{l ) r r}.I) u,ft t} i} ;? it f ri ! r1 t1.0 so: v,0 0,0 ().v 1),1i U.Q t},t1 Q.0 t).(! St,[! 0.U) 90i 0.0 0, ) O,t) 0,!) 0,0 0.0 t).f., 9,li 0.0 0.0 110; U.!) 0,0 tW) tl,!? J.U 0, I20 !},t) t},l! 0 i1 !,i? tilt! [),il ill{') [),0 130 U,u Ui,tl t},?i (1,() 010 f}.U) Si 0 (},ij 140; U.0 0.0 p,[) ii ? ''U.0 0, 0,0 [!.0 0 v 0.0 1501 !).o ?.!) [},(1 t? } a ;} i!,(l lf.U! 0.0 0.0 Ul,li 160i 0,f1 [1,t) f!,t) l rti (: fi.! t),[} U?,[! 0"O 0.0 ' 1/U) !l,S) [},{) (.l.t! i),!1 i)=0i [) G 0 i,').fi 1),0 Ole, 0.0 I NU; i [! {? r !i.{i O_ , L'u +? +? +r.t =l,0 (i.[i 19U U, tJ !.}.I) fl,(? o"(? ?},Il t?,f} 'l,t) t},i,i t);t! 010 20o1 1,1) 'i,o o,`) 11,t} !1,t1 1,i! ) {i ti,U} i),t} 0,11 210; ().t) !) 0 0 '? t`>l! },f) f!,{) (1,(i {t,t} 0.0 0.0 24,0; O.G. 0.O 0.0 24k); 0.ti (? [} 0 t' ?,!'1 !,+.i t},t, !!,, C.Q 0 0 1),t) e fir!)i 9.I) [i !!,rr r).I! '!. [!.[? U}.[! i).tl U},i} Q.il 0.i) Fdti; Ill!} t),[} !!.[ 0,0 e,q t),0 0,:! 0 O.;! [!>!) a II ' IUU.I JC C E'r t 'i3`uti5 - Location. SUUIH WIN[? OH Chocied by: Description. CUli.itii btorm:10 year '.-------------------------------------------------------------------------- ' 4'°olume vrlum;. tara.ne lime inflow outflo In C!!.? vnIur;e Elsv, (hrs) (cfs) 4.cfs) (cf) (CO (c#i (ft.) --------------------------------------------------------------------- ---- 0.00 (1,ft(P r;,;iiP fl 0 1 IIh,`. 0.10 3,'37 tt,1( 2 7u fIP2 1t ,fi 0.20 7.94 It 58 3 t..°l 'P)2 11.'.i4 0.30 €fP,ll its, is 0.40 12.57 1,19 1!1140 4 ho )ofir,a 118,37 0.50 12 131 1 4 23?11 7 I8,1ti4 1'3 U-5 0170 12.J1 (1.80 12.:37 1111"2 2 8 9 Z 5 r;(rl'3 P4,70 ' 0.R) i -IQ I P.) i3 I,tit1 FJ,!1i } 3 iZ, }i'0 31:144 1_tF,I2 I>ia �,4 4:�4h i20,3E tt 3 T12' 5314 33(li8 1`10.18 1n3ti t1.Ct:P 1,r� j1511 ti.}(P[ 3i S'.! Ii{l,Iv 1.4U 0.0 1,TJ c',,81 672b 3"Ibb 120.1. 1.2 1),ou „12 3e 1 ):_' U 1:iit) 3145H1 7 F? '?P714 1 iP p 1.70 Il,V 1.11 .3'`_lgI �id '3 3°o'34 1.80 O,iit1 1,i?! 3.k 81 31iyb 2'j48? 1.90 1j.Q0 b3 3H 1 ?(14 2.8b 113,a4 2.00 0.00 3N5"1 103t11j 73 119,8j • 2,10 0.U(1 ,,E,E, ;iu5l'1 i(t'.'.{i7 ;'7h75 114,ra 2.20 0,00 1.64 TH81 11500 27081 1H.74 2.30 (P,ps) 1,b '58.`_21 12089 A,442 11*3,74 2.40 0,00 1.61. 39�41 I'2c,72 ?5';}j3 11'3.6j 2.50 0.00 1,6(1 38is1 13251 2.60 0 OtP i.5`3 385rI i:a825 24;56 Ii?.60 2,70 (i,tPf) 1, a7 '85H1 14;,'i4 2.41Ht 119,51) 2.80 (1.0tP 15b 13 ..581 1445'a .3622 I1'3,50 ). i�i ] •, .- •1'l 1` t`t r E:,� 11'3,+1h • 3].01U ,` i..�? u1 ,�„p3 11N 11'4,41 3,ci) F1.1ii1 1 ... �4•`141 1k,F,�>} i'1 t'li 11"7.:,1 3,21 1,R, I,J1 11J81 11110 21412 I191 32 t)Ls- 119.2E? 3.40 000 1.48 :;1.81 18248 20334 119.23 3.50 :°.UQ I.4./ i4",i1 18 Z 18 0 j.1'. 3.60 11,00 145 s ttl 1� 1: 19 74 1N.14 i.70 I.t1!i 1, ..I 4' -;{I 119,I0 3.80 U,ti(i 1,4u 3h_'1q1 :•'(;:�.`+(1 18'<'1 ll'�.Ub '3r`ji1 t) {)iY 11 42 31eb I 1t"P t 1 i 11 7 1 1'1,i11 4,00 0 QU 1,41 3i581 21 13115 II Q6 118.137 4,IQ 1I .43 4.20 t).0 1.-5? 38"`_"r 'YO3 118,813 4.30 r1 4,40 t),tit, i,3L Ml °1 I iI 11.1 yf 4.50 0,00 1..34 :38 lip,1111,17 4.60 t.ov 1 3`:8 1 243 23 i 4259 118,73 4.70 1,i1i.D 1 .1 i''? 1 '47 j �4 IM63 4.90 tP,tit) j,2'3 .}:{.,81 252F'4 1:':'1; 1lS.65 catJion, SOUTH WINDSOR ,1y -- UE'5Cr101�1Qn: -- -------------------------- Up Tine Inflow Outflow 1n Oiu !1e �l?v, (Ar5) ',CYS) !r^fs.) ![{) lt?i rf1 (jf.�i -- -------------------- ---- ------------- -- ---, -l--- 4.9t1 t7.(ii) `1•;1 5.00 U,O() 1. '.% u. 91 i iN5 1'(3! 1 .5i 7 134u 11l `? t t!ts?F, 114'4 5.:30 (J,(ii) 1.`a,4F., 5.4(1 O,Oi1 l, i ?581 7yi;4 r 13 !?8,42 5.50 O.U!) I,20 ;5 R1 74Q2 I01i'' IIy,39 5.60 0.00 I.1 j 311581 97 jo i I8.35 5.70 itt3.t)I!I 5.80 (f,1}() L,13J.t." iiH.26 p) 6,vo (1.00 1.14 R5"RI :`I!)_ ) '' ?1 1. 1 6.20 vo 6.40 (i.o(r 1.(19 H5t1 ;'I`)� 4.1Y.. !1!?.()u 6. b,1}[} (1,(}() 1),'jr, uljl f;1'+ 1jhr. t1i,)j4 6. 7.00 0.00 O.85 335;81 '_4Z(i5 4315 117,67 /.10 U V) +I.t!! 4,t1(1 ;t45, / 4t11'j 111,5'j 1.20 0.00 t!.75 I:t 1 :;ao42 i dt) 117,51 7.30 0.iu1 t1,71 3tJti71l 3`,1()4 7.0 (i,f)i I .61 H`sd? 7.50 0.((} 7.60 (t,(#i ;1,79 3ub81 u!of)' 27N 117.25 1.)O Q.01) U,`tit iH5'] - .i){) 5 is 117.Y(1 7.80 O,iiir 701 ?8u 11 ,14 t.j(} (1,()i) 19 8 O,110 rigs 117,05 N.I , o.U!j f:, '. i f11 ?un!, E1.' 0,uo fS,40f 181)1T 5 f iG Ilb, !h 8.30 MI t', tf RI tiv i). ' u 15 ? J 'j.(V) fj i;o O.',!'! 11E.74 1() (S 00 !}. . �.4o O.gg f i.IS _! '_ F. I1t.67 4,)�1 i;t. i(! (t ,i y..;.;. .;m-r'i 'Jf{'' ;?F„F:• lacatxran suolt+ WIN66o by, IIescriotlor,: Cui.tft,S ikit ;liv ---------------------`----------------------------- Time Inflow 11tltflow In )int Vr;lt!me tlev. (hT51 ws) irfs) icf! ict! '.CtY. (?f.) -- ----------- ------------- ------------------------- 9.iU U,U1, 0,,0 ,.y "} N 41' 11Ez,l+1 10A) ta,Ut! U,t]'a 3+5 1 10 10.20 U.OU o"u/ C ] v � �• i 1]h,1' 1U.0 ti p!1 q !E, 3N H1 ,H !i I 11b IU.JU tl ti(I ri oi, :iH,nl 10.60 U.QU 0 {:i�: 10,1(1 0,00 1} on, 10.0 U.00 u 0 8 sit 1`!4 11R.`:.`s lo.,ju t),+.i() u u4 Ti' dl !i< ] 116.,`.:+ 11.0 on u,t)4 j ? c,t41! 1:-,a 11b.b4 11.I4 ti,(}ti U 04 4 I1.20 UAU t) U;t 3jU,'1 ;8•4 11l3.5� 11.30 il,ifil (}.(!.f J{ :di J1l4`.•> ].' I1b.J' 11.4o Q,() t!.)13 :385B1 A464 118 11b.J3 II.Jtf (}, iti :;; fr 5H? �,41 11.60 U.UU 0.U2 :3 `31 :: 4-'U 99 116.IJ:, 11.I0 t],00 I1.Ut) ti,ili.s {} ! 3yt 1 u H4 '1F. II.44 t),(ftJ +i,t)' ; .` '7 4'04 ri ]Iii.v 121QU ti.tfli !},tl'1 3H.`:%tI t 116.J2 ' 12.10 ts,tiii j 0'. �yz y zh i� 1Ib.`e2 12,'zu ti.UU l}.(!i. ati.`tHi Y2E Ilb,':1 I2,41 =.},nu 0,01.. ;t' :fit 3'85:3+? 51 115.J1 ' 1.2.7tf ti,{ii u,ii]. {'HI N : 4 47 11b,7I 12,bU U,tiU t),U1 ;H til ?a_., 4a I1b-J1 1' ,l(1 t.i,(ldl t},tl?. J'; ::•'f 4ii I ."il . r Description CUtUNS l,'RNSINb -- -------------------- 4UMMAKY OP 0PERt? ! Maximul inti,:,s?; i+.'.h rf; at 9.40 hrs. Ma%ibmU4i, lirtYi�, ehatlfRriR :iii, a-�! j,i{.'"„ ct?hi'- tFP. a,. r1�'•tY.t,',r, 1',�',. l` tnor, Stop at 12,74 Input Data tilE: ' WNLI'MPLti►!'d`+1� ais?1 ,,'la! UUtput bFvi ce; Uutpull Iteration conrro.1 into vac: I 0 :Job Number: a-;,.u7n tiv: jAP Location: '.i!JUIH WjNLIS(!N I.I.-Eckel bv: ' Description: CULLVi6 CRuSsliili Storm:,?-year --- l? ASIN AIiA ( YS1S ' --------------------------------------- —L--------------•-------------------11 ME ANE1 1 f. ( UW PA f A --------------------------------------- ' ilme starts at u.0oo firs•s tide increment (} 1r1} H' Hasetlow is U.(ifi rts, HYUltUIaRA�'H NO1 N i i 1 3 ; �� a•, _ 1 ii --------------------------- ---- ------ ----------------- -;------ ' 1(li 8,2 4,4 1,:3 r!,( li.i! t}, } I1,'! (l,o tl ii f}.(I U.If i}.0 (1-if t),i) o'o if,i! i!,If (i.o 0.0 90i t),0 (),rt t),(i ?i,i! i'.f) f.1, f.ii !.(P E!)i U,(} if.{} if, !,f! if, t},if lu! U•(1 (J,(} 11,if U. 'Bu (t.o if,(i tl.i} if.(! i!,if ir.'.T ,,.+! (!.11 If,{1 t1,if if.(I it. if.Q ti 1! !!, oi).ti ii.(} it,if lc'i), 0.0 (t,1) o,+1 (! 11 if.;t (1,.) it 0 14(1i Q. V U (!,;! {} +! t,},(1 P t<< �1 (}.it t),0 (1,(1 (l,f; if,(l 160 i (t.(i (!,{! ' 170 0,(i ti,(} 0,it list (1,11 i!,(! it !l if,t1 (I,t! t),(1 0.0 it!If p,U if 0,0 t1 (f,(+ (},t) i,1,{! 1'jUi 0.0 0.0 (I,it (',(} (1,1) it it !,{) f1.Q O'o tUUi U•U U.p (}.0 il,ii (1.0 (},if ?i,(? 11it; {!,(i Q (t ft,ii it 1) {f,i) i},U U (!,i! ii,ii t1 i1,ij if, aif; lf,{) i n 0.11 if r,il i +1 {1_+i if,if (},EE „ii,l; f„it it,fi if,ij i r p ty si ,+ .<i.' (1,it it q, iz (i_,i !l if a,ii i.i} if 2/0; 0,it 0,0 o.{t ( .`.1 1).it i!,t1 o,f} (1 ?i i!,P} U,(i 180; U,U it,(I 0.0 i+,if o.(i i1 (3 f},fit X (ii it,o ,tl } ) ;i ii.(} +i,(t 9,0 a 1 1 1 ,• Job wimber: n-80 11at- F-i .-'�L 11eslnn kV: -JAY t.ocati.on: 813(1iH W1hC� Ui ' Vest ription, (:Ul1INS UROli' lNb `t-r-m•25 year ----- ---------------------------------------------------5---------------- 7; 1a A ti 1 ;i H 11 '! 1 l N !i ' Volume volume Storage iime 'nilow �t++ttIow In Out volume Flev. (firs) (cfs) (cfs) (ctl-------(cf1-- -----ict) (ft.) ----------------------------------- ---------------- 0.0 U.OU 1).(it) U 1 U 116.50 0.10 4,7b U,19 tb`' Y4 842 116,73 ' 0.20 j.53 0167 3446 17i 32611 117,38 0.30 141'lj 1.11 7742 `/ 7225 MIN 0.40 15.08 1.25 I303(i 943 12(i81 118.54 ' 0.50 15.08 1,40 1y459 1422 17021 11R.96 U.60 15.U8 1.52 2,1988 190 21939 1111,36 MU l t,QH 1,63 2931 i 21 518 ;6-199 119.77 0.$0 I4,84 I,i {1`t'1� 1Z. '1571 1ZU'l11 0,9 u 1l.jj I.iU y ._F f 1,00 8118 1,... �31a'..i 44(t5 18145 1'>il.4a 1,10 a.4I 1,44 4,5 .. c! 4016,5 1: ' 1,20 1,'ll 1 4 4 -u6F, t:`1 a+'i'j lc l,5tti 1.3(Y 91,{i1i i,44 4. '9 o F,4 1,40 (i,qu I,:;! :i� 'u_ ;0A 3f.4A I'M. 1, 1.5[i U,DO i.n:: 4r. `t!4 •i u4 1 +.1' I.bU (?,UO 1.6? { j, ;`? f+.;t 1 _ti.44 1.8o V.{H1 i ,7'j 4=:-,r9t ��.":4 L J JrJ•ij 1i.0.i1� 1,40 (1,(11) 1,14 2.00 ii,(!U 1.18 46.j;: S:!'j•:;4 3 :'S4 1;'.ti.3U 1(i :}.(1;1 1,7; uh '7Z ?? )1: :a'1',• 1[(!,2 7 2.2U 0,[!?i 1 (b 4 j 1'l l? 34++81 1 zv ;`4 VIVO 1 tF1. 1:'h4:< J3j{' 1i"i,r(! 2.4it ii,UU 1,74 4b29'2 13471 32821 126.17 ' 2.50 (}.(i!i 117: 4 El 2 TZ 1,}}?; iJlJ 1-0,14 2.6(1 VIVO i,/_l 4bZ'72 1412ii M22 140110 —70 01 uln i.!;: 41h'C'jL 1 tiC ;! i!i'j�i 129.0 2.8U 0.00 1,/1 4' '9:: 1 .51 a 335 1 :i.114 L,j(t {i.{IIi 1.lii 4 I 4'/i �7: 1 1t0 QI 3,(i(1 (i3OQ 1,69 4bij2 19,9b ?.10 ii,Uli 1.F 4i i i, 177t f {5ri 1.1911.41 3.20 (i UQ 1.bb tf, 114,8' 3.30 0 ou 1.6h 46 .1 I (`j83 7,Uj 11 41 3.40 U.i]U 1.63, 4az92 19574 26714 IIj.76 3.60 o1) llbl 4 j' })4u 17`!5L 1ST b.i i.7(1 U,UU 1.5i 4b'4G ".':`1b �1'j?: jlj.br' 3.tiU (i,UO I 4b'"41 244U6. j1' ,.`;3 `3.j11 0 (t=:.i 1,�;` 46,?92 Y'45.1 I.00 (1,U0 I..`. 4(�2 2 aU't5 13�7H I1 :.4Ei 4.10 U.00 1,`4 4t. ''` 4; 4 20 U.UU 1,`j3 4b:.'y Z4124 t b'j 1 I'j.38 4.39 Q.UU 1..`.:l 461j. '''bi1 Il6'E1 lt' 4.41) 0,00 1,5t1 4 214 4,50 0, ., ' 4.60 (i,(}(} 1,48 4b1j:1 26281 Z 0 0 0 119,2U 4.70 0100 1,4b 4b''42 1bN1b 19476, 1111 1b 4.80 1i.0U 1,45 462-3 27"41 18951 1ii,12 Job Number: 95-N4b I!ate: b-Isi-' E, !)estnn By: iJN Location: SOUTH WINDSOR Checked by:... Descriuti,:in: i:Ul.lINS F:NC,S 1f1; tir,1+:(5 VC,Ivmp time Int1oW Utlofi:,. 1n I!±±r.. ftrnc jo4,, thr51 f,t4! r4g3 if?1 rtj (cf) (it.) -------------------------------------------------------------------------- 4,40 0.09 1. '4 vh"':' I:' 1!4;{1 111.o y,ttti t),(tt3 1.3 0 { 11'41.4 b.iv !),i,)u 4F, H'�i1 1:4(1, 71ta,u`a `J.J01h;1y4 1?}t -tiit 40 5, t.) 0.I)i3 1, 4h<, fi1 :, ,,aatlf ItU. 'L U.ttU ?1'if) 14'i.'T }IH.fy I444'�' 11N,74 5,11U !t,tii3 1.'i 4b.1{' `i•g(1 (t.I,)(! 1..iti 4t:'z'{ y'i'a` t°4'5 1t8.blj 6.0 0,t}f} 6.IQ U,()i) 1. '! 4bi'' iI9, .$ 6.20 v ti(t 1,';th 46'Z' 2 341i'S 12116 118.11.5 b i) 0.tW 1,24 E,'9' �E;'a 116E7 lIH,51 6 4?f tl,tirj .t,2' 4t iJ;%'1 22 18 .!t: li:� 1..„47 6 5t1 U,00 1(37?2 118,44 6,60 10,QU I..-'0 4 `+'{4` ji,-4x: 1tt ,4t) 4415 116 �t 6 j 4 {4H b,90 U.UI) 1,1 4hty.' l:? h iit67 I18.29 I'Qt) ti.ou 1,1ti 4i,'y ;;764:; 864`t 118.26 ' 7.10 U.UU I.14 4t, "i8obb 82126 11 H.22 !S,09 1.1;i 4b%` :': 3H4:4 7b2y i 18,114 1,:it! it,Qo >,1,' 4b,-i Alsbp t4A 118.Ib ' 7.4U 0.(SU 1,1t1 iF'{t v 2h1t 7024 118.1' 7„7U 0 o!) I.t) 4E 'i, c'?bb4 bbD ile.09 7.6U r ,U+.) I.t)lI 462'i 4U05:+ b238 118.U6 7.'I0 Cl.0t 1.(1l 4fr'4r 4()44:2 b851 7,80 O.UU 1,t)5 4b'i;' 4(1824 5468 117,'38 7.3U U,tiU t1.'{'~ 46,-jr: 41 ;S 51t13 117.8b 8.U() ;),tilt) U,9;1 4b i'l,' 41:::i'1 41Y! 117,7�,4 ' 8,IQ 0100 !t.N7 46Z'j 418: "t 44 :, 1.17 t3 8.YU t),UU U,X,Z 4h 1'' 4t'161 41�j1 117,62 8.30 tl.Ud u,t t' 46,'',- a,:i41 1 1 h4 ' I,4i.) ,.i, i?. ' al, :' 16 117,47 B. oij 46 8.60 0,00 0,b4 4E:["{' 4:'2'l7 :!tSi 117,3.? 1,7(I 0.00 t3,t•:rf 46'4'. 8,Bo rt .tif 4 F 4 41:;;:.r b tl 111 22 8."qu 1,on S„l? 3,t)i3 tl,�jo o,`i(,1 4 ,';'y;? 4gt)4! 1 1j7.7t 0 tl,ti'i Q.4 r }Yi 44',',1 o9, 44:_ ,�. 7;:7 1 i i tit flt,•z�'{;' y 4o U.-0o t . r {Z 44r t 1 W,,( 116,'j4 -i,`ti! h qi2aa, �4;y 71k :,1 j.bi;l t.tlt,t ii,:!.' 1r:''i 4 '44 1.; 74 11b, i7 ?1F,y4 4', l I`,h 11.6.t 2 • I Job Number: �5-845 11,te: -i ) Deslcn by: jV1 Location: SOUTH WINDSOR i:hecketl by: Description: COLLINS" -------------------- ------------------------------------------ vr'h7me voIlufl tor Time Inflow 0..ttfIow In G"it tlr+ium0 Elev, (hrs) trts) (cfs) tctl (rfl (rf) (ft.) ------------------- ------------------------------------------------------ 9. U.Uit t1.., ' I ..fi} i} !2[.' ti,; ' 46,.92, IU.2(1 1, tr1 o.i': 4h-' Z a L t. 4 11C 73 0 vi (i• .4L/PU:1 tl.,`i.,PL•- iE7 !.)Y:e fl 10.4(1 n r1r1 (i,16 4 'a ,.:a 1 )(15 116.63 5U U. 10.60 0,1)0 0,14 46 r'J 4:t611-: ' 1(1.!U f +1 1 l:.1:' 4n[>,? % -t4 4`1 i 1 h.Er5 1u.ai) t;>(t'j Ir 4hfa: lU,`iU t1,t!ii it.l' 4 t L u. 11.iit) (},:l(; t}.1(} 46' 4J. �' ' 11b.62 11.10 U.UU (2,t1y 4b'29 4t+4i)U 3112 116161 11.20 0.00 1.08 46292 4tJ 361 116.60 11.30 0>01 U.U1 41292 45961., {2 116.59 ' 11.40 U.Ut.) (i,t):' 462-1, 3tr)N;r 305 lIb.58 11.50 U.UU it,t}i 462'?2 4MIJ2 al I1b.-58 U,titl u,U6 46214 2 460:,4 258 }16.57 0.(1(1 U,U6 46292 4:0t + '37 I .56 11.8U 0.0 0.t)5 46?92 4074 218 116.56 11.90 0.'Jo U.ob 0 7?2 46U92 201 116.55 12.00 i.ou 0.04 46292 4LbIf 185 116.55 ' 12.10 ().U(l (2.U4 46:"L ybl :- 1f{1 t16,'t`i 12.20 p,;.I1 U,n4 4 =" i 461 h 1°r6 118.54 �1fl'G9Pi41 lc'.4t) tt p+) a,i13 L �? a Ih`I 1':> I14,b4 5o t) +.1[I f),if 4+-.'•1" iZI 116. 1'1.7(1 0,oil O 10 121.80 0.00 P.0,1 4L uFI ;i 94 lIF>`,i 12.'1U 13,(IU 11.1?11 !1,tPr c Y" 4,, IV .. .'J r. }x>1(1 tzo F i;' 1; t a, .j 1 2 _i�',°::!i i'ti ct+ ' 1•i,4(} J +)ti )1 :I) 4 �? uj ...} Z! IIE =2 4f,Y411 1316U I,Ig U.U1 4b29'2 48 II >51 13.7b U.00 i1I +' '4 . 44 11t,.`.;I 13.80 1,00 U,01 4b 'j2 462bi2 41 116.5I 13.90 .1.UU U.UI 4b29. 4 255 ;4 SiE.,Si d NQUT1v! IHMINAIH NiORPI4LL'i t ' Job H,,,, J-j; Location: S'UIjIN tlltd(.i50R ChIcl;atl by:--- ' Description: t:'f AINI'; --------------------------------------------------------------------------- 4' A ; 0MMARY if Maximum Inflow: 1'�.i its at C.90 hr;. Maximum OutWlw: 1.-; rt; =t 1,11 hr=„ MnYimum Storanip: 40:`i C1 bib trot At i l�;lyti;i:l i ll.`'/ appt. (retention time' 3.4 6oizr5, HOUf1% ftRMINAIEI) NitRMALv +x Stop at,' 13.93 lnp.tt Data File: U:1,yYil4'lshHal:11,izpll'- 8a5,yat Output Device: t::�FiY?iHCt1NASii4ix,flN4 'S.*. t ' Output interval: t1.ItJ lteration control interval: 10 Job Number: 'i5-84_ 11aTe: 6-1H-'S Design 8y• J.JP Location: SUIL11H W1NQSOP Checked by: description: COLLINS CRUSSIN6 ----,torm:50 year ------------------------- -------------------------- ----------------- BASIN ANALY � 1S -'------------------------ ----------------------------- ------------------- 11 M E A N D 1 N F L 0 W f j A . A - Time starts at 0.00o t+zs.P time increment Q,iQQH,,----- Haseflow is 0.00 cts. HYUROGRAPH POWS : 1 Z 3 4 5 6 7 S 9 10 ' ---------------------------------------------------------------:------- --- 0: 0.0 5,3 10.7 Ib,Q ;h.''I 16.'J 1L..'-1 16,`j 16 6 13.4 10: 9.1 3.8 1.4 0.0 U.0 tl,fl U,U 0.Q 0.0 0.0 201 0.0 no 0.0 0.0 no U.0 0,U U,0 1.1,0 0.0 ' 30: 0.0 0.0 0.0 0.0 u.o Q,Q 0.+11 Q.Q 0.0 0.0 40: 0.0 0.0 to 0,Q 0.0 0.0 0.0 0,i1 010 0.0 f}tli Q.Q Q„'t 10 10 10 t1,U I tl.fl no U.0 701 {,1,(1 to 10 wU 10 flat A 0 10 0.0 1Q 90: 0.0 10 t1,U 10 n,Q l,il tl,tl Q,t) t1,t1 0.t1 15W 10 10 1U 0,0 f1,Q U.0 19 10 Q,Q 10 16M 10 10 1U % [1.Q f},0 nU 10 0,0 i1,Q 170: 0,0 no 00 10 (1.0 10 10 10 10 10 1501 0.0 10 0 0 1 U i1,Q MU N0 N0 10 (1,0 19Q: 0.0 N 0 Q,0 Q,0 N0 v0 N0 Q,Q U,Q 10 ' 200: 0.0 t1,0 N0 1U U,0 10 NU U,Q 010 10 210: 0.0 0,Q Q,o U,fi :,U Q,Q 11,t1 Q,Q Q,0 (1,Q Job Numben yh-845 Bate: E-It!-4t 0estan NY: ;j?'r' LOCatiOn: SUUIH WIN!}SUN £:h-Y.ed bv: ' Clestri tion: - i. wear --------------- --- ------------------------------ -------t--------- rm.p "i'orHv" Ttme )ntlnu, „t+fn:_, f!i,t '.I:isra �Ic --------------------- -_.._-_____-_ t1.00 U.Ot') ll,i!f} i! i! 11b. tt ' (i,1(t d3 9:14 1 '4 iIb,/5 0.20 10 66 t! 14 :,Si; I'36 b b1 11/.49 0.30 15.°3'� 1.14 s'!,6 556 tt1U1 llti. °1 0,40 16.8 1.3£! 145r? 9'3ti 13587 118,ti7 ' 0.50 16,88 1.4b .tr58 14`3 191b11 119.13 U.60 16.8£! 1.59 16735 2041 24694 111j.b4 0.70 16.88 1.71 32812 2635 30177 12u.u3 0.80 16.61 1.78 38840 3262 35577 120.31 0.90 13.41 1.84 44238 3914 40323 120,56 1.U0 9.15 1,88 48:91 47' 36 43705 120,74 1.10 3,82 1.91 50L16 5269 4 347 110.8. 1.20 1.42 1.91 51555 5956 45599 120.84 LIN 0.00 1,At 51808 6643 45165 120.82 1.40 0.00 1.9(! 51808 7321 44481 .•120.78 1150 0.00 1.8'3 518uS 80Q 43H0fu 120.74 1.60 0,00 1,88 51 St.}H 8635 a3113 120,11 1.70 0.00 1,l : `18(te 42449 120.67 1.80 0,ti(! 1,Y6 518t!H lttt!30 4117t3 120,64 1.90 0.(to 1.8b 51y0N 10b98 41110 120.bU 2.00 Q100 1.84 5MP 113b3 4(!44`r 12u.57 2.10 t!.U(! 1.8 i i 18i>N i,(!`4 :jy uc 1 ,tl,53 ' 2.20 0.00 i 93 51 £!1 12593 39125 110,50 2.30 !,00 1.82 511'!!b 1 i3_u "4b'a 110.47 2.40 £!.00 1181 :1808 111191 :7817 120.43 ' 2.50 tl.tl(i 1.8t1 51rt!:>t j4e40 ii :8 120.40 2.60 U.00 1.79 5180H 1`,'185 2i 12t!.36 2.70 U,(li! 3..8 ; '0 12£1.3:3 70. 2.60 0,00 i,77 51308 1657ti 35234 120,30 2.90 9.0 1.17 51-408 '7 07 _'46,oI 3.0a 0.00 1.76 51808 11841 33967 120.23 3.10 0,00 1.75 151808 184721 3 333'5 120,20 ' 3.20 0.0u 1.14 51808 113iul 32707 120.16 3.30 U.00 1.13 51808 197Lb 32062 120.13 3.40 0.00 1.72 51808 20348 31459 120.10 3.50 0100 1.72 518018 0us8 30P4o 120.07 3.60 0100 1,71 51808 21584 30224 120.03 3.70 0,00 1,70 518v-S 22198 ::'341 ri 12(!,;10 3,11 0,00 1,69 51103 7 29()(!i? 119,91 ' j(! Sl,til! i,b1 1�.;:�;, r' �:: ��i} 1i9.140 0J(} V.09 1.bb -r1di;;; 24O..2 19b i i'?.85 4,lti t!.019 l,f 4 l'ii!u 24�' fi''ttl il`:,Et} ' 4.20 0,()0 1.63 518t)i ? to2 b 6 12 119,75 4,30 (!,00 1 t;;2 51HUH, `r it E(!17 119.70 4.40 0100 1.60 51608 26 31 6 0 2_<447 1I9.66 4.50 (i3Ou 1.59 t I H 0 8 I :'a 4Ut7 119161 4.60 0.00 i._i8 51808 750J 24?(t' I1`j.56 4.10 i1.00 th M l 7i L 1 9t, .. l �H.1,r 4.80 U.00 1,5'-s 518rl:l ;8G31 :,, 76 119.47 ' Job NumGer: !!n+a: -lr °� 1?esit n by: ..f:;p LoCation: SOUTH WINDSOR Chcc �,,•�ked Gy:--- ' Description., COLLMf ClOSsINU --------------------------------------------------------------------------- volume Volume ttorage Time Inflow Outflow In Out Volume Elev. (hrst (cfsl Qfsi (CO (cf rf1 ( -' . ( --- 4.9U {!.00 I.,r4 S1Ht} 9117 tab"U 11'',41 ' 5.00 t?,i?U I,S3 518U18 0613 119.38 5,1U i?,c?U !.Sl 18U11 3U;H5 1`. 119.33 5.20 },(x? i,.°r�; 51(tl 3tis 1 201718(? 5.30 (1,OF 1,4'? 1;!? i?442 119,24 5,4o t),;![! 1,47 s18O'H 314?8 1!1j�.j i 19, i? S,JU 5,60 O.vo 518(!y 3L951 18?i56 119,I1 5.7(1 1,44 5j40 ?34;1 j833b 119.06 5.8t? (?,!ir, 1.4:; ,I80 :33''1% 1I821 1.19,U2 5.9U Q.00 1.41 h18f) 344,,.E 17: 10 110.98 6,UU U.UU 1.4U 1806 3,i!(i4 16804 118.94 6.1U 0,ot) 1,38 I Q8 .`_:5u4 s>90 6.20 0.00 1.37 5180 359,39 15809 118.85 6.30, Q.QQ I,35 J 180 36489 15;`19 118.81 6.40 ii,(?t? 1.34 :18UH 3 97.3 14835 118.77 E,.SU 1„' 180H 3,74J2 1435b 118,73 6.60 0.00 1.31 518t!F '79 7 13881' ?iB,69 6.70 u,t.?f? 1,!4Q b18r): 3S'::5 13412 i18.65 6,8ls U>t?U ;..'8 J18(ti! 3r859 12948 118.62 6.90 U,UU i,L1 :{i8QH IAt+y 118,58 7.00 t},t1U I,t`: �:NU 397 [ ll'!i`: 1i3.54 ' /,il! n 1i.r!4 4t1�':'1 ii5yt; 11H.5i? I.2o ;?.VO 1.='. r0? 1114 1 1H.4! ir!/i!.' ile,,4.3 ' ! 4:? 0 (if, 1. o j 9;?H 41 S,.40 t()'67 :111,:i9 Y +ii! i I,bo U,MO t?8 Jib 3411 118131 t'.;,p 1, �c ' kl 4y9Q 18.1! 4"'L"' 8574 118.25 =14 tl, ?[i 1., !' i.+,rr'•' Sti}^,'.._` 118,1is 1IH,U8 ' 8.40 t?,(it! 1 ;fw. L ltlt!i 45641 61b1 118.0 (!>1!t; itty.E!' 4r4n'= 1400 I11,9t, 8170 U,00 tt,''! `;1hilN 67<<'' So3:H iII,m ' 8.80 U,i)(? o.9� .1808 47109 4698 117.77 8.90 U,ti? 0.86 518(?8 414;" 4371 1171bB 9.00 0.0 ?!„81 51808 47730 4(17L" 111.60 '9.10 (.00 U,i-, 5I8t!i yBUlu 79J 117.53 ' 9.20 O.Oo 0,7.' 51808 48279 ?529 117,45 9130 Q,UU U,b7 S11!U8 485"?9 '2'7H 117.39 ' 9.40 t? 1(? U,b1 `180y 48Ib4 043 117.3,-, j 50 (! 0o (f,h(I 1 t+t18 u1!iti5 822 '!I7,'[t 9160 U.!)t? �tj6(?4 49I94 b14 117,I1 (Lt)t? � �lt: v air n t3u 4°,Jl.i ?.'4 II. Ili Job Nimirta 9'� On I,�tF. i•. f'-� i,e;ton H,ra :E.iP Location: SUIPP. w1m):)J't l:ftqcked bv: ----------------------- ---------,-------------------------------- ).',IMP lime Inttow (hitt?n,a In Out �1oTt.(tne, tlev, ' C•_) '.rtl CtS trt) itt,) _.----- ---{ W,;I-±------------------------------------------------- ------- 518'.8 4i -1 11I`� 1i7.t)1 10110 tl,00 0,4' S1HU4 t,^,'' 1.r`4b II6,4I Io,tq tl,E)o ),3f 51'CRIi iy 140b I16r'i3 10.30 [!,On ) ;a 71;U>{ 't);s: ? 14 J/ ' 10.40 a.fm 1, 32 51808 i)4JO IU.5U Q.1)() tl, ?U Sl1408 ,,.,j 1 44 11h.84 148 11E,bI t1h.P l+t' 4<< 116.16 Iv 'Al { Plii o. 1 �1.5{I{ 14 11.fii! 0,9l0 p.)y j (1H1t I1.21(' 1I,4E,) l,4 •1(I tl i4. r`Si;;� ll {1 J`)�" IIF b1-6 iI,EU )n c ,i,x Si t�3 ;.1 4' i 47 I1b,E2 I1.80 t),Q0 fl,111 3 H1)8 I".il 420, 116.61 !Mo (1,tlti t),ta'y ;;.fpY 'Hr 116rbU i2,tif) E)rtil) n,tltt yt rly i1457 355 HISA i , , 1d,1L' f),llt) t),O?t iiH4b 4t'1 1 116.b4 I2.20 1), a0 t),p, �; 15Ci7 i(t1 116.58 (),00 U.t_!6 518?H ''76 7.IE,5! 12.40 f),t)g (1,(i6 18()8 51 bl5J 254 116.51 U-1.bu {j,f)(! 1).lil) b1 ii4 234 116.56 12.EE) U.(1(i 11,115 51808 `,1`;'i:3 215 116.56 1,'.7Ct U,1)t! (l,tb 1juE)i1 i 1(i ?y8 116.55 0,04 biRid 51b T82 11E.55 1219u (i,!ita 0.04 b'�4t)8 b164() 1h7 I1E.55 13,kit) fa,fit! 1),0 5? V{ 5iO4 154 i16.54 ' IJ, I ;),;)t' ) [l 5 ;);- ;)]bt, 141 116.54 130 116.b4 El.Of', 0.1 1:'0 116.5u 53 go l),of.l 1{,11() 0 ut) tt, ( b 14,(it) I!.tri) ?! tj .5i i 14,111 f),+?+} it.ill `7t"?w; - '1 1.'17.`t ' 14, 56 11h,5! 14,,t) tlrt)U •i `iHt)i tij; .c 116151 ' 14,40 b I bkllu `!' ,t'I 4k 14 `at! E.i,tlt) U} ��� ,-' j 2 14 44 11^,5I 14.Et1 51)E) C. itF,.Si 14,11) 11,tlt1 Ut ' f**** i{UL)j 04H 1 1NA!t J PU'Pm.AL I ' l job Winber: Ilpsion t'y: .JN location: SUU►H wiwzo ' nert,ed hv: _ Description: GULtiris uou,`siIiti ------------------------------------------ A 5 l N A ^! A i Y 4 � I.ilr ?� AkY IJF IJPi: RA ! i IIN, ' -=-o_❑=_cc.==_===v__r=.co_�,====.,c_zc�..=s�==c❑-=.c=_==__❑--=.c===c_=_c===== . Maximum Inflow: t.b.^i cis at 0,4::) brs. Maximus Outflow: 1.9 ,,s at h , Maximum Storage: 4bbli ;Uric teet At 't!,?Va'10n Detention +.ire: j,1 hours, RUUIIN6 IERIINA(tu� NOPrALL'r t*� Stop at ls, `1 Input Data irl`de: I,::il-i'),?1(lBAa 'jfl'\ tAl\i'r3+-,.Olt UtltpUf Vek;re,' Output interval: Iteration rnntrii, lntprva'.: lil 0 1 • t Job Number: 95-845 irate: S-18-9E Design By: JJP Location., "UiH WINI)SoN thecketl by:_-- �' Description: COLLINS URSSIN6 Storm:l(i'.} year ---------------------------------------------------------------------------- K A S I N A N A L Y S I S --------------------------------------------------------------------------- TIME AND I N F L U W DATA --------------------------------------- Time starts at O.UU(i hrs., time increment (1,100 Hr< Baseflow is 0.0 cis. HYDROGRAPH POINTS 1 Z 3 10 --------------------------------------------------------------------------- O: 0.0 5.8 11,b 11,4 1 '3 2.'4 18.2 18A 18.0 14.E 4.1 (t,i) Q,U if,{! {Y,tl 2W 0.u U.U tj.0 {i,tj [!,(j (i.(7 0.0 si.0 010 U.0 ' 30: 0.0 U.0 I.J.0 1,0 U'0 O,rl O,it O.U U. 40: U.0 fj=(} U.{} {} tj (! (} 0,(i i1.l? tj,U 0.0 {?,0 50, 0.0 (j,U i"0 i;,ta 0.tj :}.ti U U Q.0 010 U.(f b0: U.1) U,0 O.0 U.0 U,U (!,U ql 0.v 0.0 0.0 /(j: ().0 t { .j t } ( .) f ( ... j,{ J.. ). j 1({i: U.0 a.f3 (}.i! ('s,(! n.O Q,v ?,f) tl.fi �},{! o,i) '10: 0.0 U,( t},U (?. } f),U U 'i fi,ti 100 U.U (},{! 1,(} EYE,(P (S.() IM 0A {l.ij {!,{i (j,ij 1,tY {}.0 130: U,U U.0 ).0 t!,f) 140: ij,U t},U {Y,ff 0.0 U.0 150: 0.0 0,0 u.{i 0.0 U=0 [i,{) U,U (i,(} (i3O 0.o 1bu: {;.(} O.0 {}=0 (!.i) 0<U {i=(} {},tj {i,{i O.0 0.0 17U4 0.0 0.0 U,tj (} {i {i=u n,{} o'U Q U (1.0 {i3O 18U: 0.0 0.0 U.0 U.l} (}.{i (i, 194: 0.0 0.0 0.0 0,0 0,0 (i,{? 20: O,U U.0 (),(i rj,0 (1,11 U.0 (f,U U,U U,0 U.{} 210: 0.0 0.0 tt (I (j,U fj.0 0.0 fj,!i U.(i {l,(i ij,(i 220: 0.0 0,0 (},o {1'U V,U {!,{? t1,ii (i<ii u.0 tf,o 1 2301 0.0 U.0 U.{i 0,0 (),U U.0 Li.(j {?,g U.Q {?,U 24U: U,0 U.U U.U U.0 9.U (j,U 0,U 0.U 0.0 U.0 250: 0.0 0.0 0,0 U,U {i,U (1,() (1,{) U t? 0.0 0.0 1 IEO, 0.0 0.0 u.0 0.() U.0 0,0 U,(r U,U U,U (1,0 21u, 0.0 U.0 0.0 0.0 U.0 U. O.0 0.0 0A U.0 180: 0.0 0.0 (j,U 0,U 1U.j) i),{) CA fi,U n,U 0.0 2 u: U.(.i ii,U (i.(j U,U U,i! {},tj ti.U {}.U 0,t) M i 1 Job Number. '4b-?i4- Lo(ation, S0UfH WiNt)SHR h" I)esfirlptlen! j;jjf.j f 1'.h I i.5 c!r r ;! ,dear ---------------------------------------------------------------------------- i t; if ji i i i lime 1 pt f-w i I t t.t lhl p Oirs) (Clsi (r+q) !r *! "4! ( (tt, -------------------------------------------------------------------------- V .3 4"l 4 Q. i'IL 184 Ali I 0.40 18.2"1 1,34 i 46 t(1�i:i 0 1 b0l 0.60 18.31 i g p!)4 t 1 O'q 2 0.70 181 3l 1,74 '; r 120,17 ul 80 1 s T2 b Z ().go 51 Fri 41�4?1 4 Q (I v4 E,1 .1 1 1,20.-5 1,00 g.:43 1.'14 2,3?,1 47H 41 b I 1,1r) ,14 44 �4�11 1.20 b 1 b ii'l t�3'j o 4 is.i8 I L" J 1,40 il ��r�l ,lh' 1,'+}.`Jf I I 1160 0.011 4 20.14 i 2.zo Q,-99 l,df 5t rIJ 1 j446 41,1.11 f7114 30 9 41415 1 2"l,62 -4t, 1'iO4 2.60 ij.of) 1.84 5 62 0 15117 117 4009' 120.5 2,10 1 2 i t'?l I'Lfjl "'44", ' 1.litl , t�,.! i.S2 56 Q 13 114:34 81 b'l 120.48 2.90 0.o IS115 111(),4 3.00 Q 00 1,8i� "I tlz u.3 181311 3 14 f3 4 1 4 14 3.10 f?e(it) 1,1-4 1,b',1"031 1'iJLl(6- b H 1 12 0.'318 3.20 0.00 1,Tj 56203 2 9()'.3 1 .172 1A).35 3.310 0.of) 1.78 5 6 2 0 2 Y 6 7 3 35531 120,311 1,10 1,111 1,71 16203 21311 34392 120.28 3.bu Q I UO 1.76 56 11 cl 3 Y 1941 3'4 2 b Mu 0,01 1.15 5 6 2 u 3 33624 120.21 3,/0 ti,(m 1, 4 Z' 2(14 :q 2-9''?4 120.18 °� 80 U I R) LA J7Zti,i -In V,040 4 4 1 i44 4.00 2 Z 0 H V 31 12:11 1 0 H 4,111 4.20 0,oll 2c' 1-3 4.30 4.40 Wi I 6W `iw+--(! 28 7 1 4,60 0,of) I i;'5 uJ 18 V 1 2 7 4 119,82 4,10 0,0;l t-A '. 4.80 0.o o I I 1 11 1 7 31 Job Number: 95-845 Date: 6-1.8-9b Design 3y: JJP Location: SOUTH WINU8Uft Checked by: Description: COLLINS GROSSING --------------------------------------------------------------------------- Volume Volu,"+e litoraoe . Time Inflow Outflow In Out Volume Elea, Ors) (cis) (cts) (cf) tct) (cf) (ft.) -------------------------------------------------------------------------- 4.Al 0.0 1.b1 b 20'Ij 3()01 25112 119.68 5.011) U,0 Q 1,ii(1 S,Yii3 31068 251 a- 1 H.63 5.1() 0,W) I.iH 56,.193 ;1tt,,41 'N56;3 119.IDR 5,ZO Q.V) I,IS tiF,r , Z,i{, 21,3y'5 114.54 ' (t tt.OQ 1,`;F: ��f,., 3 !?'. :>'343 119,49 5.4Q 0.UQ 1,:4 5b..t)3 w_:32,a f'2874 119.44 5.6U t),I;i 1.5 5 s[y' 34 1 21112 119.35 5./0 (},QQ 1..51 ,� ,S 34� 21228 11,E 3I 5.bo t),og 1.49 t6ye:3 3t,515 _t}bfif8 119.2b 5.90 u.ott 1.4i 56:2 i+. 3b 0 U! 2' 5:1 2 ' 6.00 Q.UU 1.47 562013 365N1 19622 11'1.17 6.10 U.0(i i.4b 5b203 1[}, !9096 119,13 6.20 0,it0 1,44 562)3 376'29 18574 119.08 6.30 O,OU 1.43 _162i'3 38141 11805b 119.04 6.0 0.00 1.42 5t;2+?; 386E0 17543 119.00 6.50 U.00 1.4111 56211i3 33Ib8 17035 118.96 6.60 U.Qi) I.39 56203 39611 16532 118.91 6.70 0.00 1.37 56203 4()169 16035 118.87 6.80 0.00 1.36 56203 4(}861 15542 118.83 6.90 0.UO 1.35 56203 41148 15056 110.79 7.00 0.00 1.33 5620 41629 14574 118.75 7.10 MO 1.32 562U3 421ub 14098 118.71 7.20 0.00 1.30 56203 42577 13626 118.67 ' 7.30 (}.UU 1.29 5h2+13 4'04:3 13]6U 118.63 7.0 0.00 1.27 56203 43WN 12699 118.60 7,50 0.0U I,26 56'03 439"1 12243 118.56 /,bU U,OQ 1.25 5b.! 4441;' 117'jl 118.52 7.10 0,00 1.2`11 b ht!)3 448'19 11345 118.48 7.80 0.00 1,22- 5.293 453011 109(t3 118.45 7140 o.[)1? i-Zl ti iii.3 4: 10466 1.18141 1,19 b62 r', 4617[) 10033 118.37 11,lU 0.1?It 1_1 [ 620,3 4k1`}y C 0E,, 118.314 8,2() 0.00 I,17. 7a2 i3 47tt 1 '3183 118.30 13,30 Q,t)ii 1.1b 03 4;43') 8 7 b 4 118,27 8.40 0,00 1.14 5b,'2i)3 47P53 8350 118,23 8.50 01Of) 1.1: 5b2'03 4Fs'ft::`' 7940 118.20 8,6[1 U,R) I,12, 562i'1 48668 7535 111,11 8,10 ().UU I'll 562:;3 430 .y 7134 138.13 8.80 0,0:i 1.10 562113 4'34::6 6737 118,10 8.90 (},00 I,U8 5t,'�U3 4'311v8 r,345 118.07 9.00 0,00 1 o7 56 013 5024a 5957 118.03 9.10 (},()U i [it 5t203 50639 5573 118.0() 9.20 0.00 1.iv 56203 5 100 2 5201 117.91 9.30 0.U0 0.14 562()3 51352 4851 117.81 9.40 0.00 0.89 562U3 51681 4523 117.72 ()t) U.83 562U3 51 4221 l l 7,b4 3.60 0,00 (},lu 'sb2+):v 5,92:1 3922 117,56 ' 9,7() Mu i 14 5 62()3 4 c=b4'3 117,49 9,HO U.00 5620 1;` 3391 1 i 7.42 Job N11mhpr: a`: nata: 1d-'i9 cl .!.JP Location: 1,iUUTH wINU3L GRett:ed by: _ ' Des iY1,Due,n: +011.1P4y t Hu,5;(9, - --------------------------------------------------------------------------- 4nI[Ime Vo11,me '8toraoe . fl;Te inflow t)atflow In (lilt Volume Hey, tJ•sr5 it;) !!'fJ (it) if (ft.} B -------------------------------------------------------------------------- j.90 0 +r i u.F.` rlrr' =149 1P.35 10,00 !r rr0 U,61 5E20 S3281 29 2 117.29 l0,ltr U.t)r1 lJ.7N �b"1l!c 534j5 27t!H 21I,2' 10.20 0,00 0,-4 5E2()3 53bj1 1.lT5 117.19 l ar 'ii +! tilt l.51 6"+' dy4b 131 i 111,l,i 10 0 Q +!+) 0.46 F'! = 54h A i l.j 117.08 10,70 ti,(m) 0,4`, 5,b'lti: 542;t lji't 117,03 10.60 UIQU 0,4z 5bfU 4:38j 1814 116.99 10.70 ),t)0 2 54535 ibb8 116.j5 IU.80 1").00 U. b6'il:i j46.j lb34 116.9z IU.JQ 0.00 0.;�3 1J.b"z 1 rj 4iI4' 1411 11618N ' 11.up tr,!,,Q iJ,:'!1 5b2u 54'slib 147f6 IIb,85 !r.oij 0, '8 .`"ZW; 010 11j 3 11h,8' I1.Y0 n,(A) 0. 6 `,6 0' t6iub 10`jl 116.8iu II13ii l,tlti ti,;j ft(>:; i51''4 ]irtJ'1 Ilb./,' 11.40 ;r,t)!J 1. 1 Sc:fn 55,275 11,5t: tr,i;ti (), !rs ,.,:) H:,4 IIb.73 i 1,60 0,0!1 0.18 56 2Y 03, 55418 786 116,11 lI.7tJ O,00 !),1 iyILI�rtr �j k1 722 1tr.70 11,80 tr.l;!! i' 5 5b203 555:39 664 116.68 11,90 0,00 ti.14 `t:iJ' '959:3 611 116.67 12.00 0,00 1J.13 51103 55642 562 116.6,E 12.10 t).lift +.i,12 5b1ii'3 5;by;7 `16 116.64 12,20 0.UO lilt .16203 5574 475 116.63 7�',31j 0100 lr.ttr 56 'i; 55766 437 116.62 12,40 iJ..itr t1,i.rj 5b u3 5 8 i j2 402 116.61 1'1,5 0 V.QU 0,,o9 bb?03 55834 3H 116.60 12.60 0.UP 1,t!8 5620 55864 340 116.59 12.70 !r h0 i .Q!, t610 5b691 ;I2 11b.58 12,80 0,1r0 '!,0! 55..03 5531+ 4N7 116.58 1 0 ?,tit! 0. "?93,9 '2b4 116.57 15,00 t!,Q, 0. 2433 116.57 ls,Its !J,IkW 'a,ob `EZU 8 U c13 116.56 tr,l,)!? r,iri _,!,'Ltf3 5599)3 t!f5 1116.56 55 13,401 ar +,!i !,i)4 tit)ir `L :; 11d i Ib.55 )..r431 b,54 1 bo 0,90 o.w4 Sb%t:r j St r,)ti f 4 r 115,64 124 116.53 o,+tli j5•,, .`'�'`.,•., `,ct;Y,j ,14 0 ,4,t)0 0,0() U t!L It15 IIb. 53 14.H t!0 ti.i+' 1i17 + I16-b 3 14,Z0 o,i a O,i SE, ti3 5'.114 °'! 11b,'f2 Y1 82 116,52 14.40 f1,iil) lr,tl�` 46 1f< 5S12'1 75 11E.5) 1.4150 0100 0.n2 56 ii? tib1'34 bj 116.52 14,60 t),t)+) 0,(11 5621,013 56140, 64 116.52 14.7lJ #1 art) a L614s `•1 1 4� 16. L 14.80 n ..:) 0.01 5h-(I 5Lb149 54 I16.51 Jab Number: 'i_s-545 fete: E.-lu-`i-6 11esion Hy: JJp Location: SUUIH WIWOSOR Checked Description: CULLINs CRU-tiSv1i: --------------------------------------------------------------------------- Volume Volume Stnrane lime Inflow Outflow in Uut Volume Eiev. Ors.) tcfsl Scfs? Sct1 q f Scti (tt.i -------------------------------------------------------------------------- 1 Mu 0100 0,U 1 56203 561)4 49 116.51 15.00 io,Litt it. `•SZ03 56153 45 116.51 1b.10 0.00 Ss,tll S�SS1' i`61t.► 41 116.t1 15.20 0.Ou U. 1 °;;a03 `616 3S 116.51 € NrJ=lTINIG Tt1N11.1TFI) tlSlRM-LY r 1 1 . t i k 1 1 1 1 Q i . 1 1 _,1 Job, Number: 95 845 Date; 6-19-96 Design By: JJP Location, SI101H w1luINSOt Ghec.k:ea by: Description IAJLLINS I US INC4 --------------------------------------------------------------------------- BASIN ANALY5I ---------------- ------------------------------ - ====-------=---=-==--------------- ' Mp-1run Intlow! ,a,: rt= at ;=,a•:; n,r�. Maximijm Uut4di,i; i.fi c°r, at i.1n r!r=, Mai PUP 5tOTRUa: 49WN c!Ibj teet at Hpvat?cU 1')1,05 feet, Detention time: 3.14 hours. * * PKITINH QRMINAILD HtIRhiAI.!Y Step at I5._'6 Input Data file: s.IHYDR!�tEASI^�+.IIA1ii5u5.dat Output device: L;;iH'i1�f{11A: 1P! Output interval: 0,lfl Iteration control interval; 10 f 1 1 i 1, COMBINED FLOW i HYDROGRAPHS r i 1 COMBINED FLOWS SULLIVAN AVENUE WATERSHED (2-YEAR STORM HYDROGRAPH) (CFS) lIME DETENTION BASIN COLLINS CROSSING SULLIVAN AVE. EXISTING CB"D" TOTAL (HRS.) OUTFLOW BYPASSING BYPASSING BYPASSING (ADD HYDROGRAPHS) 0.0 0 0 0 O 0 10 .10 .63 .13 .09 .95 0 .40 1.07 .25 .18 1.90 O .75 1.07 .38 .24 2.44 0 1.08 1.07 .51 .24 2.90 PEAK .50 1.15 .79 .64 .24 2.82 to 1.22 .21 .73 .24 2.40 0 1.30 0 .73 .22 2.25 0 1.37 0 .73 .17 2.27 10 1.43 0 .73 .07 2.23 1.00 1.46 0 .73 .02 2.21 110 1.47 0 .73 0 2.20 020 1.47 0 .73 0 2.20 30 1.46 0 .73 0 2.19 140 1.45 0 .73 0 2.18 1.50 1.43 0 .69 0 2.12 i 1 ' COMBINED FLOWS SULLIVAN AVENUE WATERSHED (10-YEAR STORM HYDROGRAPH) (CFS) lIME DETENTION BASIN COLLINS CROSSING SULLIVAN AVE. EXISTING CB"D' TOTAL HRS.) OUTFLOW BYPASSING BYPASSING BYPASSING (ADD HYDROGRAPHS) 0.0 0 0 0 0 0 10 .16 .95 .20 .15 1.46 10 .58 1.62 .40 .30 2.90 .30 1.07 1.62 .60 .39 3.68 to 1.19 1.62 .79 .39 3.99 PEAK .50 1.31 1.20 .99 .39 3.89 to 1.43 .31 1.14 .39 3.27 10 1.53 0 1.14 .36 3.03 .80 1.62 0 1.14 .28 3.04 to 1.70 0 1.14 .13 2.97 0 .00 1.73 0 1.14 .03 2.90 .10 1.74 0 1.14 0 2.88 20 1.75 0 1.14 0 2.89 1.30 1.74 0 1.14 0 2.88 140 1.73 0 1.14 0 2.87 50 1.72 0 1.07 0 2.79 1 ' COMBINED FLOWS SULLIVAN AVENUE WATERSHED (25-YEAR STORM HYDROGRAPH) (CFS) LE DETENTION BASIN COLLINS CROSSING SULLIVAN AVE. EXISTING C D" TOTAL (HRS.) OUTFLOW BYPASSING BYPASSING BYPASSING (ADD HYDROGRAPHS) 0.0 0 0 0 0 0 110 .19 1.13 .25 .17 1.74 0 .67 1.93 .49 .34 3.43 0 1.11 1.93 .74 .46 4.24 110 1.26 1.93 .99 .46 4.64 PEAK .50 1.40 1.43 1.23 .46 4.52 to 1.52 .37 1.42 .46 3.77 70 1.63 0 1.42 .42 3.47 80 1.73 0 1.42 .32 3.47 to 1.78 0 1.42 .15 3.35 1.00 1.82 0 1.42 .04 3.28 1.10 1.84 0 1.42 0 3.26 1 20 1.84 0 1.42 0 3.26 1.30 1.84 0 1.42 0 3.26 1 40 1.83 0 1.42 0 3.25 1.50 1.82 0 1.33 0 3.15 ' COMBINED FLOWS SULLIVAN AVENUE WATERSHED (50-YEAR STORM HYDROGRAPH) ' (CFS) MIME DETENTION BASIN COLLINS CROSSING SULLIVAN AVE. EXISTING CB"D" TOTAL (HRS.) OUTFLOW BYPASSING BYPASSING BYPASSING (ADD HYDROGRAPHS) 0.0 0 0 0 0 0 10 .22 1.24 .27 .19 1.92 0 .74 2.11 .54 .39 3.78 0 1.14 2.11 .81 .52 4.58 to 1.30 2.11 1.08 .52 5.01 PEAK .50 1.46 1.56 1.35 .52 4.89 to 1.59 .40 1.56 .52 4.07 0 1.71 0 1.56 .48 3.75 0 1.78 0 1.56 .36 3.70 to 1.84 0 1.56 .17 3.57 1.00 1.88 0 1.56 .05 3.49 110 1.91 0 1.56 0 3.47 1 20 1.91 0 1.56 0 3.47 1.30 1.90 0 1.56 0 3.46 140 1.90 0 1.56 0 3.46 1.50 1.89 0 1.46 0 3.35 I COMBINED FLOWS SULLIVAN AVENUE WATERSHED (100-YEAR STORM HYDROGRAPH) ' (CFS) kIME DETENTION BASIN COLLINS CROSSING SULLIVAN AVE. EXISTING CB"D" TOTAL (HRS.) OUTFLOW BYPASSING BYPASSING BYPASSING (ADD HYDROGRAPHS) 0.0 0 0 0 0 0 110 .24 1.38 .29 .21 2.12 f0 .79 2.35 .59 .42 4.15 .30 1.16 2.35 .88 .57 4.96 to 1.34 2.35 1.18 .57 5.44 PEAK .50 1.50 1.74 1.47 .57 5.28 Lo 1.64 .45 1.70 .57 4.36 170 1.74 0 1.70 .52 3.96 80 1.82 0 1.70 .40 3.92 190 1.89 0 1.70 .18 3.99 1.00 1.94 0 1.70 .05 3.69 1.10 2.44 0 1.70 0 4.14 20 2.51 0 1.70 0 4.21 1.30 2.14 0 1.70 0 3.84 1.40 1.94 0 1.70 0 3.64 1.50 1.94 0 1.59 0 3.53 1 1 C.-F'd551N(zl ;5ulbvu Ave- AJa:veas Ram r SUIIivAW AVENUE- 4EA WAT.KSUP-C7 . �XOS-Tto�CA, GoNpiT)an1.S a . Dra inage Area �'l, e;. acres ,. b. Composite Coefficient of Runoff Impervious Area c=0.90 A= 0.47, acres Grass and Landscape Area' c=Woons/�gz�S(1 0.20 A= $.34 acres C=O. 15 A= 3.62. AGSZES ' _ ( .90 ) ( .42 ) + ( .2a ) ( 8.36 ) f (_i57(3.62') Cavg ACavg = 2.60 c . Time of Concentration Type of Flow Length Slope Velocity 'rime ' (ft . ) ( %> (ft . /sec . ) (min. ) Overland (woods) S-10 Overland Soo 6.5 '/ 19 rv�iN. t c = 39 miN. Return Period Intensity ( i ) ( years) ( in. /hr . ) 2 1.4 10 2.3 25 Z.8 50 3.1 100 3.5 d . Peak Rate of Runoff QZ= _3.64 Cfs 0 = i (ACavg) ' 010 = 5.98 Cfs 025 = 7.Z8 Gf s ' Paso= 8.06 c�-s r �ioo= 9.1 fl U-s l� � A Co111�.5 tr{�a5�1i+NG_ DRYwr�ll t���iva -- — DQe�rll._ -rorzAc _ 2I A-- nr/4 68 - I s-to. - SWSIOA ' _ _ I I ' --- --------- -- — --- —.- —------ FT - - ---------- -----c!?iL—Y¢S�M�agLL1LK—N�)Rt£c> �"��a�T��.A� UP _SAND� --- ' L`01100SS C•k=0551N6i 6vIlfvA,o Ave_ 4eveRs (� r' YAav UQAin) 17 (Drz.YWP-10 a. Drainage Area 0.-Lq acres b. Composite Coefficient of Runoff : Impervious Area c=0.90 A= 0.10 acres ' Grass and Landscape Area c= 0.W A= 0.16 acres WooaS/�cJSIE G= 0.15 A = a 03 AcRe:.S Cavg 0.4-4- ACavg = 0.I2b c . Time of Concentration Type of Flow Length Slope Velocity 'rime ' (ft . ) M ( ft . /sec . ) (min. ) Over I and &gAsi) 1-15 S.4 06 Overland i tc = 13 nova. ' Return Period Intensity ( i ) ( years) ( in. /hr . ) ' 2 Z.S 25 4?? 5.0 50 �.G ' 100 Z Ny,yzQGw,P u d. Peak Rate of Runoff : QZ 0.36 i (AC av9) cpk= 4"7.4 CFM Q1 O = O. 5S Gf-S 1225 = Q.64 CFs Q I Vd'4*-= 63z PT; 7s.1 ob Nunber: 3J-i4b, Iig}P. nI,- r'-jF i', _; n ;v: .a;, e5CY1ption YARD Ii A `! "+l Py':rLi L --- --------------------------------------------------------------------------- [T f�v.rll:j #❑❑c=.c❑=_==ccc❑c==ccvov==_c=c=c❑cc====cz=c-=e -------------------------•-------------------.-----—'— ----------------------- ------- ------- --- -------------------------- U0 ';,: x1 t ..`'.�' '�1.y -._.ib L ' ilia An A denotes that r'N [Cf-pU}-. vnl.,r*_. 3 C indicates that vo ite`3ti 3t ryr.cc �t s i l jwa-'!- .,rat 5"fig 'niti3l Pool Elevation* ri-ot su lip-o ---------------------- z Ira= — Type rlovlin� l_.CYi :i,:;., --- ---- -------- Pant S"Pe!itied ilIU Not Used Not Usea Not LiSe"u Pb exnben 9'3-0-1 co,ation: C0LL1N5 U T! hy�__ �soiptioo� YovV 8e�m �l/ DK,��iL _____—__—_______—___—________----____ 8A6lm ApAL ` � lS ------------------------------------- �1�� UlS�H�RG 0AlA -------------------- Outlet *l out!et o2 Uutlet 43 Uutlet w4 Tin tal Elev. Uomargp Uisckarye Dzsc�arge Discoarge Uisckarye ft. r.+.s. c.f.s. 0.00 V.24 4.0U �.49 — — — v.48 v.,v 6.0v . v -Pa ' � | Date: 9-20-96 Design Py: jjv ULM""", CRO.'SSIM-i CAMM by:,_ Descrlpiiom YMB MR ml WMA Shym!Ou year ----------------------- ----------------------- --------------------------------------------------- ---------- ---------—-------------------- tme stuts at Wo hm, "me :nUemot Q.HQ HT, seflow is u.u'u [fs' YVRU�AAH Folmic" 1 1 1 2 3 5 10 --------------------------------------------------------------------------- M 10 10 0 10 1 u I u I u 10 1 u 0,k) to To 1 u 10 3w 10 10 0 K 10 1 u 10 19 U.0 FW 10 10 u 1 u %9 At n u I u 1 t! A 10 10 K 0 1 vo 0 u 1 C 10 1 u U,0 IN 0 0 10 10 U. 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L4v 1b' � 1O � . 1,50 0.OV V.o1 1�� �6�� � 0.06 1.60 .V3 L70 V.VV o.Vo 1652 1 1 V,02 N0TlNG l2N1<mATE0 �0RMALLY ***e ` , m� �� — �m�r ��� n �� Datp� o6'2v'�* kesign 8y: JJP Icatioo: CULL1N� C7RU'-j*Sia6 Description: YAkD DRAIN' #17 kRyaEiL ______—___________—__--__—___--__-- ANTALYSlS S U M M 4 K Y OF O P E K A T { U N ximum {nOov: 0.8 cfs a; 0.31.t h�s. ximum Outflow: 0.7 cfs at V.55 hrs ximmn Storage: 4'"'8 cubic fnet st E1evatzon Detention time/ ��**+ N0DNG [EMI w8|E0 NOTIALiy *ee Stop at 1.79 ====================================== put Data File! C�\HYDKU\��{N\0*T\9584 tput Uevicp; C/\HY0R9\BA 9 1.N\TX1 45'YU17.txt ` Output interval: 0.10 eraboo control iote/"a}' 101 -- � � ~ �� ulr►vti� Ave- hJevl~as F Aj> r. x YAW> T.-NA0 is 6>a.YWE10 a. Drainage Area : -� acres ' b. Composite Coefficient of Runoff : Impervious Area c=0.90 A= 0.10 acres Grass and Landscape Area c=0.20 A= p,27 acres + ( .Zo > ( .Z'1 ) ' ACavg = 0.14-4- c . Time of Concentration Type of Plow Length Slope Velocity "rime ' (ft . ) (%) (ft . /sec . ) (min. ) Over I and &aAs57 190 Overland tC Return Period Intensity ( i ) ( years) ( in. /hr . ) ' 2 Z.S 10 4.3 00 25 .5.0 SO 5.6 100 6.1 '. d . Peak Rate of Runoff 0 = i (ACavg) I 025 = O."12 GF s f 2 I — Vowmr= 93? FT O CF'i3/nu��cJQ" �. V I Gam' I •' 34'1 Q►off = Job Nlimbpr: 011tion: i L CILLIN� CRub'a'llv� v P51 ri ption; muq) op.,A #1 I--------------------------------------------------- ------------------ ion I #}��x�sgaxx?xy.x}&ate+###��•^##s+xrtsa��zsrFa�s?c�x e f?Pt 1 C,r, S fl ACE sh4ft.'L; v r I Y#{�4Y��F1fL*ifiF Y-Fi$} ix�?41Y€[E YYak�YY 4�- tYf.J.y --------------------------- ----------------------- ----------------------------------------------------------------------------- -------------------- t 4,fir L1 no fu:} 1;. An A denotes tt%At Inji igtm-c tvat3on at r-t -------------- -------- pp -------- -------------------- 0 fin Not Uc�-d 4 Used Joh Nnmt pr. N. cat inn: CULL INS I 9'� MPtlCal! YARI �lu ------------------------------------------------------------------------------ ------------------------------------------------------------------------- -------------------- tq ij!l t 1 11 t Elev. =r a F 1c f t. 11).1-10 4,00 o,48 4H tit! o' o Job Number, i`i-84,5 bats* l thin: !.�lill.(!d:� ',h;tJ'^`;Er'"� •l�cr� .,. !lf tin. Ya{J!' aa11" --------------------------------------- ------ -----------------------t ----------- ( . . .- 1 ---------------------------..-..---------- ---- ---' -- - --- i"o i - f(}r 5fi� Ft,1l tJ,fi (t.�t i!_ Pt. r.�.'t ..:7 N;F+ F,fi S( {},ti 'F,{i it, i!ti; [},ti (j (t ff+ t7(if (Ls ,(i it A 1; i ;� f fj ;f (F it ;,, ,: �i (i•(I q.�i it ft. ••(• tt�t f! +'t,It L'fl; i1,/1 ?4,fi fi,ii i g ft t:f, (j,i i•(i it it (F<n it r it,,;) i fl JJP I JSS!N:4 A 9 ---------------------- ----------------------- -------------------------- ------------- ----------- 0,AD fl. Lit L U flo _'__ ---------------- ---------------- ----- ------- - 7 7 7 T J f I cf n e t IN t i I W �w � V H A I ,.7 --- --------- - / •tea �, ' CS-6- CB 2 / I I II I• 7 ' 0 CB ll B1 CB O O . / YD 20 CB',4Z0A I ---- _ N/F H/f �(�/ \ 1, "•TOWN OF SOUTH WN05O4 POR7ER&CA THEME S ' FY _ I � SOUTH WAIDSOR HIGH SCHOCY OVIIINS CB%46 ` - - I 00 --------------- i I ,yyU�yY:-• I -�-- '-~-------------------arras'- DRAINA GE AREA MAP N. r.s aA 151 rl, t t0�N S'r O * F Tow;n V/ S-V W{..11 V ? a C y 1540 SULLIVAN AVENUE • SOUTH WINDSOR. CONN. 06074 SOR•Co� AREA CODE 203 644-2511 June 24, 1996 Peter DeMallie Design Professionals South Windsor, CT 06074 Dear Mr. DeMallie: This review concerns the proposed Collins Crossing stream crossing dated 3/26/96 and the drainage area affecting the stream. further reviews will cover the remainder of the project. 1. The proposed stormwater outfall from Hunter Lane is planned to terminate at a level spreader approximately 60 to 65 feet from the wetland boundary. Site inspections have shown that a small gully has formed from runoff from the Ag field in the same area. This raises a concern that stormwater leaving the spreader will channelize before it reaches the stream thereby providing a source of sedimentation to the watercourse. A rip-rap channel should extend to the watercourse with a plunge pool. 2. The plan shows sediment structures to be located at CB# 20, 16, and 21. An additional structure should be added at CB# 9 to intercept material coming from Sunrise Lane. Catch basin #16 is recommended to be a Type I sediment structure to minimze storm flows and maximize sediment retention.(See attached spec sheets) 3. Soil stockpile areas should be shown on the plans with appropriate erosion controls. 4. Temporary sediment basins should be planned to contain sediments onsite during construction of Parcel °C° 5. Slope plantings in areas not planned to be mowed should contain an aggressively growing legume such as birds-foot trefoil or crown vetch. A wildlife shrub component should be planned for the cleared area adjacent to the proposed stream crossing. 6. Outlet protection should be installed at the outfall of the existing catch basin on Nevers Road just north of telephone pole #3643. Erosive scouring has occurred in this area which can be easily repaired and prevent further sedimentation to the watercourse. 7. A routine maintenance schedule for the privalely owned sediment structures and catch basins should be shown on the plans. Very truly yours, Jeffrey H. Fo ger Zoning/Wetlands Enforcement Officer cc: IWA/CC Director of Planning Town Engineer NOTES: 1. SEE STANDARD DETAILS FOR PRECAST REINFORCED CONCRETE MANHOLE, CAST IRON MANHOLE FRAME AND COVER, MISCELLANEOUS MANHOLE DETAILS,AND TYPICAL TRENCH SECTION. 2. ALUMINUM STEPS SHALL BE INSTALLED AT 12"VERTICAL INTERVALS FROM 12"(MAX.) BELOW T.F. ELEV. TO 12°(MAX.) ABOVE INSIDE BOTTOM ELEV. AT EACH ACCESS POINT. OUTLET STRUCTURE INLET STRUCTURE 5'-O"DIA. 5'-0" DIA. MANHOLE MANHOLE SEE PLAN FOR SEE PLAN FOR SEE PLAN FOR PIPE SIZE i PIPE SIZE — I I PIPE SIZE I k IS"R.C.R I la"R.C.P ---- -- 1 I INLET OUTLET f— 1 CONCRETE INVERT CONCRETE INVERT SECTION B - B N.T.S. T.F. ELEV. SET IN FIELD 4'-0" DIA. a 4'-0" OIA. N JOINTS NOTCH TO BE :4 ! FULLY OROUTED (TYR) MANHOLE - MANHOLE !' la" R.C.R a" 9' Is*R.C.R + ;� e + s" a ' 4 r '4 I I'-O" S a'-0" 9'-271 3- 12"DIA. HOLES 79 Ie 3/4"BROKEN TRAPROCK SASE SECTION A—A N.T.S. TOWN OF SOUTH WINDSOR SEDIMENTATION STRUCTURE APPROVED STANDARD DETAIL TYPE I (Sheet 2of 2) JANUARY, 1991 Rcvlscs: PUBLIC KB OHIECTOR r- July 1, 19% JUL 2 IPQ South Windsor INLAND WETLANDS AGENCY) Mr. Jeff Folger CONSERVATION COMMISSION Environmental Officer of South Windsor Inland/Wetland Commission South Windsor Town Hall 1540 Sullivan Avenue South Windsor, CT 06074 Dear Mr. Folger, It has been brought to our attention that certain wells on Sullivan Avenue and Hillsdale Road have been tested to ensure that contamination will not occur due to barrels being removed containing unidentified materials and the construction of the proposed Collins Crossing building project. We, the owners of 6 Mountain View Road, are very concerned that our well was not chosen to be tested. Our well Is located on the south end of our property, approximately 30 feet from our property line, directly adjacent to the planned construction zone. A well tested on Hillsdale is approximately 400 yards from the planned construction zone, and we have been informed that It has been tested twice. We have also learned that Mr. and Mrs. Callahan, of Sullivan Avenue, have had their well tested twice. The Callahan's well Is not their primary source of drinking water. We find It difficult to believe that our well is of no concern for possible contamination or other possible effects due to the immediate proximity of Its location to the planned construction of Collins Crossing. We have contacted Connnecticut Environmental Engineering, Design Professionals, and your office. Connecticut Environmental Engineering and Design Professionals have Informed us that they have no intention of performing any testing concerning our property. We are using this letter as a vehicle to record our deepest concerns to the obvious oversight of our property being excluded in any pre- construction testing. We are anxiously awaiting a response from any or all parties concerned. Sincerely, 6 —f 4_� C . /�� David and Linda Brown 6 Mountain View Road South Windsor, CT 06074 cc: Design Professionals Connecticut Environmental Engineering Planning and Zoning Commislon, Town of South Windsor IniandstWetlands Commission DEPARTMENT OF THE ARMY , NEW ENGLAND DIVISION,CORPS OF ENGINEERS 424 TRAPELO ROAD ,r 1A ' �� WALTHAM,MASSACHUSETTS 02254-9149 lilt5� / REPLY TO Jul 2 1996 a ATTENTION OF Y / Regulatory Division CENED-OD-R-199601242 Design Professionals, Inc. Attn: Robert J. Arsenault 165 South Satellite Road South Windsor, Connecticut 06074 Dear Mr. Arsenault: This is to inform you that we have reviewed your application to place fill in Plum Gulley Brook and adjacent wetlands for construction of an access road for a residential subdivision, Collins Crossing, at South Windsor, Connecticut. A total of 7, 840 square feet of wetlands will be impacted for construction of the culverted road crossing. No other waterway or wetland impacts are required for development of the site. Based on our review of the information you provided, we have determined that your project will have minor individual or cumulative impacts on the waters and wetlands of the U.S . We hereby authorize your project under the Connecticut Programmatic General Permit (CT PGP, Permit No. 41) . The time limit for completion of this work is three years from the date of this letter. This determination is based on the attached plans, entitled "COLLIN'S CROSSING SOUTH WINDSOR, CT. ", in five sheets dated "6- 27-96", and is subject to the following special conditions: (1) No riprap shall be placed in the streambed. (2) The culvert directing stream flow under the road crossing shall be placed 6" below the grade of the existing stream bed. This is so that the culvert will fill in with natural stream bed material. (3) No other waterway or wetland disturbance shall occur for site development or construction. r The CTDEP has issued a Water Quality Certification (WQC) for this project based on their review at our Federal/State Screening Meeting. Therefore, a separate application to the CTDEP for WQC is not required. Please note that the activity must be performed in compliance with all the terms and conditions of the CT PGP. Enclosed is a copy of the permit requirements. Please review it carefully to thoroughly familiarize yourself with its contents . You may wish to discuss the conditions with your contractor to ensure that the Printed on JOIN Recycled Paper 2 - work can be accomplished in a manner that conforms to all requirements. If the plans or construction methods (i.e . for work in our jurisdiction) need to be changed, please contact us immediately to discuss modification of this authorization. Before changes may be undertaken, they must be approved by this office. Also note that this determination does not constitute an authorization to proceed until all other applicable state and local permits are obtained. Performing work not specifically authorized by this permit, starting work without obtaining other state and local approvals, or failing to comply with the permit conditions may subject you to the enforcement provisions of our regulations . If you have any questions, please contact Monica Stillman of my staff at 617-647-8152 . Sincerely, 17 Robert J. DeSista Chief, Permits Branch Regulatory Division Enclosures Copy Furnished: Connecticut DEP Inland Water Resource Section 79 Elm Street Hartford, Connecticut 06106-5127 TOWN OF SOUTH WINDSOR ZONING/WETLAND ENFORCEMENT OFFICER 1540 SULLIVAN AVENUE SOUTH WINDSOR,CT 06074 Mr. Peter DeMallie Design Professionals S. Satellite Road South Windsor, CT 06074 July 12, 1996 Dear Mr. DeMallie: Re: Collins Crossing Soil Conservation Plan I have reviewed the site plans for the proposed gravel quarry dated 6-21-95 with the following comments: The narrative indicates that virtually all of the site will be opened to facilitate earth moving to various parts of the parcel. The earth moving needs to be done in phases with previous phases stabilized before disturbing a new area. Stabilization can be accomplished by temporary seeding immediately after the finished grade is achieved or by the use of erosion control blankets. Phasing should be shown on the plans and be reflected in the narrative. It was indicated that tree clearing in the woodlot to the north of the proposed road would be halted short of complete removal to provide a temporary buffer and screen to earth moving activities to the east. The limit of clearing should be shown on the plans The proposed detention basin should be completely installed and stabilized before stormwater is channeled into it. A temporary sediment basin should be installed on the north side of Sta 17+00 to receive sediment laden stormwater while the detention basin is being constructed. The grade of the proposed road will make it difficult for road sands and other accumulated sediments to remain in the sumps of the catchbasins. MEMORANDUM July 12, 1996 TO: Jeffrey Folger, Zoning/Wetlands Enfo meat Officer FROM: Jerry C. Iazzetta, Town Engineer RE: COLLINS CROSSING - 96-31W We have reviewed the drawings and drainage calculations for the application Collins Crossing 96-31W and have the following comments: 1. Sheet 13 indicates that the temporary diversion via the 36" pipe should be removed after the straight portion of the wingwalls are installed (note 8), and then build the angular wingwalls. It is recommended that 3 of the 4 angular wingwalls be built before the stream is redirected into the new culvert to minimize the work within the stream. The northeast angular wall will have to be built after the stream is directed into the new culvert. 2. Department of Environmental Protection has indicated: A) No riprap is to be placed on stream channel bottom. This is a concern because of erosion due to high velocities and volumes during a storm. B) That the pipe be placed 6" below the existing bottom of the channel. The applicant should review the drainage calculations for the culvert using this new invert as a new model. JCI:bmr /russo/ENGINEERING/96-31 W 1 DR. CLARENCE WELTI, P.E., P.C. GEOTECHNICAL ENGINEERING 227 Williams Street•P.O.Box 397 Glastonbury, CT 06033 JUL 171996 (203)033.4823/FAX(203)657-2514 South Windsor oNLAND WETLANDS AGENCY, CONSERVATION COMMISSION July 15, 1995 Design Professionals, Inc, 165 Satellite Road South Windsor, Ct 06074 Att: Peter R. DeMallie, Principal Re: Collins Crossing; Nevers Road; South Windsor, CT. Geologic Background and Soil Characteristics, as Relates to Impact from Development on Subsurface Soils at the Subject Site and at Neighboring Properties & Water Courses Dear Peter: 1.0 In developing the subject assessment reference was made to baring data from (1) off site areas (generally to the west of site on Sullivan Avenue and to the east of Nevers Road); (2) numerous test pits, made as part of the subject site study and (3) the surficial geology of the Manchester Quadrangle (USGS), which covers the subject site and environs. A geologic cross section is included in the appendix. 2.0 An inspection of the above cited surficial geology quadrangle indicates that the major geologic changes in the area of the site are from east to west. While the geology obviously does change from south to north, such changes are much more gradual, than the changes from east to west. In general the north/south variance in geologic formation is minimal across the subject site and for at least 500 feet, north and south of the site. An important feature of the geomorphology is that the top of the moraine (hardpan) generally .parallels the surficial topography. 2.1 The Geologic Cross Section in the appendix is an approximate representation of the geology and soils types in the east west direction. In general the geologic origin of the surficial soils at the subject site to 15 to 20+ feet is so-called glacial fluvial from Nevers Road to within 400 to 600 feet of Sullivan Avenue. The soils to the west are glacial lake 1 terraces. The soils characteristics at the subject site do not vary significantly, even with changes in geologic origin, except that the terrace deposits have more defined stratification. Based on presence of bedrock at Elev. 200+ east of Nevers Road and general presence of glacial moraine TILL or H within p Hardpan)w h n 10 to �5 feet of rode at 'g g ( p ) 9 high 9 points to the north of the subject site, it is anticipated that such soil will be within 25 feet of grade at the high part of the subject site. This condition is depicted on the geologic cross section. The moraine soils are relatively dense with very low permeabilities and will act as a boundary layer for vertical movements of ground water. The top of the moraine will typically have slopes between 2 and 3 to 1. The glacial fluvial soils overlie the moraine and have moderate permeabilities. The glacial terrace soils will have moderate to occasionally high permeabilities. 3.0 The Subject Project consists of about 31 acres. Topographically the site falls from Nevers Road east 5 to 7 feet in about 250 feet toward the Blum Gulley Brook flood plain. From the floodplain at about-Elev. 150 the terrain rises to the west to a high point of about Elev.180 in about 900 feet. The terrain falls off to the west about 650 feet to Sullivan Avenue at abort Elev. 115. In general the primary topography is east to west. There is insignificant surficial runoff to the north and minimal runoff to the south. About 65% of runoff appears to directed toward Plum Gulley Brook with the remainder, directed toward a retention basin at Sullivan Avenue. This westerly flow will ultimately flow to the Podunk River, as will Plum Gulley Brook at some distance south of the subject site. 3.1 To the North of the subject site there is residential subdivision of single family .homes. It is understood that the water supply for the houses is from wells. One is an individual well and most of the remainder of home in this area are receiving water from a community well. 3.2 The receptors for both surface water and subsurface water are (1) Podunk River on the west side of Sullivan Avenue and (2) Plum Gulley Brook on the east side of the site. 4.0 The impact evaluation at the subject site is essentially twofold: 1. Existing and pre-existing conditions on the site. 2. Effects from development of the site. 4.1 There was prior storage of waste oil on the site from a prior school bus company. The oil barrels were stored near the high point on the site (at Lot 7 and 8 on Sunset Drive. These barrels have been removed, but some oil did spill onto the soil. The oil is relatively :heavy and tend to be absorbed in the surficial soils. Numerous studies at garages in glacial terrace formations, where there was significant usage of fuels have generally indicated minimal depths of waste oil penetration, where stored in barrels with normal 2 spillage. 4.11 Based on the previously described geomorphology, any migrating oil would drop close to vertical to the ground water table or to the top of the hardpan ( if the water table was in the hardpan). The hardpan will generally parallel the surface. Based on a drop of nearly 60 feet toward Sullivan Avenue and about 30 feet toward Plum Gulley Brook and the above Hardpan relation to the ground surface, it is clear that any migration of the ail to the ground water would ultimately move toward the west eventually to the Podunk River. Any movement toward Plum Gulley Brook, which is about 750 feet distant from the soil on slope of about 4%with permeability of about 40 feet/day would have been evident within about 2 years after any oil entered the ground water stream. Since the contamination obviously occurred many years ago, its lack of presence in Plum Gulley Brook at this time would tend to obviate the possibility of oil movement to Plum Gulley Brook. 4.12 Regarding the potential effect from the oil spillage on residences to the north, there is almost no inclination of ground water flow to the north, based on surficiai topography and surficial geology. Regarding bedrock geology the bedrock has a mantle of Hardpan, with significant slope to divert any contaminated ground water toward the river receptors. Since the slope of the hardpan to the west is many times greater than to the north there is almost zero possibility for flow toward the north. 4,13 Regarding other effects from existing conditions the area is largely agricultural. Surface runoff and subsurface flow from infiltrating storm water would generally have insignificant effects on water quality in the streams or in the ground water stream, 5.0 Regarding effects from future development the possible areas of concerns are as follows: 1. Vehicle traffic and parking with potential oil droppings. 2- Salt use on pavements with potential migration to the ground water stream. 3. Possible use of fertilizers in excess to cause excessive nitrates or phosphates in the ground water stream. 5.1 Regarding the effects from vehicle usage, such effects can not be excluded with any type of development. In general the pavement drainage will presumably include provision for oil separation in catch basins. Ultimately some of the oils may drain to the retention basin. The basin drains eventually to the Podunk River, which receives the drainage from Sullivan Avenue with many times the amounts of such contaminants. 5.2 Salt use will probably occur and will to a large extent go into the retention basin at the west side and probably into Plum Gulley Brook on the east side. Again Plum Gulley Brook 3 is presently receiving the salt runoff from Nevers Road and the amount of potential new salt versus the existing salt would appears to very small. 5.3 Fertilizers have in fanned areas or golf courses have been the most noteworthy factor, affecting bedrock wells in proximity to such areas. Over fertilizing causes the excess nutrients to flow into the ground water stream and in marry cases into bedrock. This causes excess Nitrates or phosphates in the ground water. This problem is obviously not unique to the subject development, nor would it cease to be a concern, if the subject development did not occur 6.0 In summary the subject development does not appear to have a more significant effect on ground water or stream water quality, than any development of the site and probably not much more than if the site was left as is with agricultural uses absent any environmental controls. The existing or pre-existing contamination (if any) will not affect the quality of Plum Gulley Brook or the water supplies to the north of the site. Very trul urs Y. Welti PhD, P. E. //Ilarence resident, Dr. Clarence Welti P.E.; P.C. 4 ----------------------------------------------------------------------------------------------------------- Clarence W. Welti, PhD, P. E. Addresses: Business: 227 Williams Street; Glastonbury, CT. 06033 ; Tel. 860-633-4623 Home: 257 Timrod Road: Manchester, CT. 06040 Tel 860-649-9052 Born: August 14, 1924; Tollatnd,CT. Education: Rockville High School; 1942 U. S. Army; ASTP Program at Kalamozoo College 1943-1944 University of Connecticut; BS in Engineering with High Distinction in Civil Engineering 1949 Federal Institute of Technology;Zuerich, Switzerland as Fachhoerer 1962- 1963 i University of Connecticut PhD in Civil& Structural Engineering ; Thesis Geotechnical 1971 Work Chronology: State Highway Department as Asst Highway Engineer in Soils&Foundations 1949- 53 In private practice(personal ownership) 1953 to present in Connecticut, Massachusetts Rhode Island, Maine and New York. Emphasis has been on Soil Mechanics and Foundations Professional Licenses Connecticut (By Examination 1950) ; New York, Massachusetts, Rhode Island, Maine, Georgia and Oregon Memberships: Life Member ASCE Member ASlrE Member Tau Beta Pi and Chi Epsilon Honor Societies Associate Member Sigma Xi Scientific Society Publications; 1974 Der Bauingenieur; Spring Verlag; Berlin, Germany Steifigkeitsmodulbestimmung nuttels Ballon im Bohrloch" Major Projects: 1950's; Geotechnical Engineer for 3 Sections of Connecticut Turnpike and Route 2; East Hartford on soft Clays 1960's; Geotechnical Engineer; I-91 in Middletown, CT ; Geotechnical Engineer; I-384; Manchester, CT; 1970's; Design of parking Garage Foundation, including 35 feet high retaining wall on Caissons at Hartford InsuranceCo.; Design of Shoring+Dewatering at Tunnel to Federal Building New Haven ; Design of Circular Cofferdams at Westbrook Maine(45 feet deep) and Waterford, CT.;Design Consultant to US Navy; Pier 15 at Sub Base; Groton, CT.; Geotechnical Consultant on East Hartford Treatment Plant (30 feet cuts contiguous to River Dike) and Geotechnical Consultant at 3 Major Clay Slides at Gil Terminals on Conn. R, 1980's: Geotechnical Engineer on I- 91; Windsor, CT; Geotechnical Consultant at Bradley Field Runway Upgrade; Design of Refurbishing River Pier for Pratt&Whitney; Geotechnical Engineer; Bristol Meyers Research Center; Wallingford, CT 1990's: Geotechnical Design for Catenary Foundations along RR in Fairfield County Based on Half Scale Model Testing for Northeast Utilities; Geotechnical Engineer Route 11;Montville, CT.; Geotechnical Engineer for US Surgical Connplex in North Haven, CT.; Geotechnical Engineer and Design Consultant for Raft Slab Design under 12 Story St, Francis Hospital; Hartford, CT.; Geotechnical Consultant for State Prisons in Suffield and Montville; Geotechnical Engineer for Mashantucket Pequot Casino +other Construction ; also for Mohegan Tribe Casino and Geotechnical Consultant for Foundations at 24 Radio Towers for State of Connecticut Communications System Connecticut Environmental EngineeringSe 107 Old Windsor Road • Bloomfi Services, LLC eld, CT 06002 Phone: 860-242-6429 • Fox: 860-242-8587 July 16, 1996 Attorney Harold R. Cummings, Esq. 1610 Ellington Road p v fit_ South Windsor, CT 06074 Re: Collins Crossing, LLC 1996 Sullivan Road South Windsor, CT South Windsor INLAND WETLANDS NGENs Y1 Dear Hal: 1GN yy i A small area of surface soil north of a demolished building.;at the ' top of the hill on this property is known to be conta�inated with- oil. There is evidence from a pattern of depressed rings in the soil that an unknown number of drums were stored at* thig location. Recent testing done on the soil has indicated there are no traces of any volatile organic compounds in this soil, either of the type expected in gasolines and Diesel fuel or in chlorinated cleaning compounds. It is clear that the stained soil must be removed and disposed of properly. At the time of cleaning the removed to a clean depth. Sampling and analyses the soil soil at the edges and base of the excavated grave are required to confirm that the removal is to standards acceptable by the State and Town. An old-fashioned crank type oil dispenser has been found where the soil is stained. This evidence suggests very strongly that the oil stains are from motor oil. The history of the property is that the former owner operated a bus company. This is compatible with use of motor oil in bulk. Motor oil is heavy and moves very slowly in soil, especially when compared to liquids like water, gasoline, and heating oil. A private well which is in line and down hill from the oil stain area has been tested by sophisticated analysis for the constituents characteristic of motor oils. None has been found. A question was raised whether Plum Gulley Brook is contaminated from the presence of the stain at the top of the hill. It is my professional opinion that it is considered extremely unlikely that oil would travel to the east in the direction of Plum Gulley Brook. I have initiated sampling of Plum Gulley Brook water, both at the north property line where the stream enters the property and at the south where the stream leaves the property for these chemicals to let the facts speak for themselves. Very truly yours, Connecticut Environmental Engineering Services, LLC 'o/ Dr. Donald G. Dobay, P.E. President ' l yrI ;�� Connecticut Lnvrroiunental Engineering Services, LLC 107 Old Windsor Road • Bloomfield, CT 06002 Phone: 860-242-6429 0 Fax: 860-242-8587 Donald G. Dobay, P.E. Ph.D. University of Michigan, Physical Chemistry M.S. University of Michigan, Chemistry A.B. Oberlin College, Chemistry, Magna cum Laude Honors Registered Professional Engineer, #10457, State of Connecticut Dr. Dobay is a Consulting Engineer who has had over 45 years experience as an environmental engineer, a registered professional chemical engineer, and a research chemist. He provides expert engineering and scientific services to industries and to engineering firms. He is an Adjunct Professor at the University of Hartford, having taught water supply and wastewater treatment in the Civil Engineering Department. He was a member of the professional consultants committee that helper! the Connecticut DEP establish guidelines for site assessments for property transfer of establishments that handled hazardous wastes generation and disposal. Phase 1 and Phase 11 Environmental Site Assessments have been personally conducted by him for banks, attorneys, and individual clients on sites with a wide variety of historical activities. Some examples of the types of properties evaluated include: apartment houses auto body shops auto parts distributor ball bearing manufacturer banks beauty parlors bus line garage and wash station chicken and beef distributor churches condominium development costume fabrication shop doctors' offices electrical contractor excavation contractor forge shop ` --furniture and,yapFl,#ance store garages golf course health care supply house machine shops metal surface abrasive blast shop motor oil distributor plumbing contractor print shops Professional park development restaurants service stations sheet metal shops structural steel fabricator video store vitamin and health food distributor He has prepared applications for permits and approvals in the environmental areas of: property transfer hazardous waste management general wastewater discharge individual wastewater discharge stream encroachment water diversion coastal zone management soil conservation oil spill management and countermeasure plans air pollution control FAA air space clearance Dr. Dobay has prepared environmental audits for over a dozen diffenent industries located in twenty different states and jurisdictions. He has served as Chairman of the Regulations Review Committee of the Connecticut Forum of Regulated Environmental Professionals and is a member of numerous professional organizations as well as honorary societies such as Phi Beta Kappa and the Society of Sigma Xi. ` COnnecticut Envar-unmental Engineer-* Services,1. , LLC Complete Environmental Engineering Services All. Work by PhD Chemist and Registered Professional Engineer GATHERING INFORMATION ENVIRONMENTAL AUDITS PHASE I SITE ASSESSMENTS PHASE H SITE ASSESSMENTS Ili EMISSION STATEMENTS CHEMICAL INVENTORY FORM PREPARATION TEST PROGRAM MANAGEMENT DETERMINE WHAT ANALYSES-ARE REQUIRED CONDUCT SAMPLING AND SAMPLE DELIVERY TO LAB WATER, SOIL AIR, WASTES TESTING SITE MONITORING PROGRAMS TANK TESTS ARRANGED HYDROGEOLOGICAL STUDIES INTERPRETATION AND PLANNING FROM TEST RESULTS HAZARD RECOGNITION HAZARDOUS WASTE SITE CHARACTERIZATION HAZARDOUS WASTE MANAGEMENT PLANS PROJECT ENGINEERING & MANAGEMENT SITE SAFETY PLANS STORM WATER HANDLING PLANS IMPLEMENTING PLANS LIAISON BETWEEN CLIENTS & REGULATORY AGENCIES SUPERVISION OF TANK REMOVAL ARRANGEMENT FOR TRANSPORT AND DISPOSAL OF WASTES REMOVED PREP,ARATION OF NECESSARY APPLICATIONS, REPORTS & DOCUMENTS 107 Old Windsor Road • Bloomfield, CT 06002 Phone: 860-242-6429 0 Fax: 860-242-8587 JUL 171996 INC, LAND PLANNERS South Windsor CN LANDSCAPE ARCHITECTS INLAND WETLANDS AGENCY/ CONSERVATION COMMISSION July 17, 1996 Mr.Jeffrey H. Folger Zoning/Wetlands Enforcement Officer Town of South Windsor 1540 Sullivan Avenue South Windsor, CT 06074 Re: Collins Crossing LLC, Sullivan Avenue & Nevers Road South Windsor, CT Dear Mr. Folger, Thank you for meeting with me Monday 7/15/96 at the site to discuss your concerns about Plum Gulley Brook and the proposed culvert crossing. The following will be incorporated into the drawings: 1. The outside banks at the stream meanders (4) which show signs of erosion from flow disturbance will be armored with Biologs (Coconut fiber rolls). Each section will be min, 15'-25' long, depending on individual conditions, and min.' of two logs high. Logs to be held in place with 2' long oak stakes. 2. The Biologs and adjacent banks will be planted with a combination of Red osier dogwood (Corpus sericea), Silky dogwood (Corpus amornum), Purple-osier Willow (Salix purpurea) and Buttonbush (Cephalanthus occidentalis). These shrubs would be planted in groups of both rooted and unrooted cuttings. 3. The disturbed areas on both sides of the culvert within the wetland area will be planted with shrubs extending to the stream. On the south side, the plantings will extend to the first meander as discussed above. The plantings would be a combination of Euonymus alatus 'Compacts' (Dwarf Winged Euonymus), Myrica pennsylvanica (Bayberry), Clethre alnifolia (Sweet Pepperbush), llex verticillata (Winterberry) and Viburnum trilobum (American Cranberrybush). Please do not hesitate to contact me if you should have any comments or,questions. Sincere) John G. Stewart Project Director cc: Peter DeMallie, Design Professionals, Inc. ■ 571 HOPMEADOW STREET SIMSBURY, CONNECTICUT 06070-2416 (203) 658-1988 FAX (203) 658-1217 ■ ■ JEFFREY A.GEBRIAN,ASLA ■ GARY R.HATH ■ HENRY W.WITHERS,ASLA ■ MEMORANDUM To: IWA/CC I From: Jeffrey Folger - Zoning/Wetlands Enforcement Officer Re: Soil Erosion/Conservation Plan - Collins Crossing Senior Residence and Residential Subdivision. Date: July 17, 1996 The project consists of creating three senior residence developments and a residential subdivision. Two of the senior residences are located on the west side of the site adjacent to Sullivan Avenue, and one is proposed to be located on the east side of the site adjacent to Plum Gully Brook. There is a small ridge between the eastern and western areas. The residential subdivision is proposed to be located along the top of the ridge. A connector road is planned to go from Nevers Road to Sullivan Avenue with cul-de-sacs branching off of the connector. Site: The site is located in the Podunk Watershed. Stormwater from eastern portion of the site the is to be managed with energy dissipators, culverts, sediment structures and drop structures. Detention at this part of the site is not proposed. Stormwater is proposed to be discharged before water volumes from watershed reach the site. There are no wetlands or watercourses located on the parcels higher up in the planned for development although stormwater will be discharged to Plum Gully. Stormwater from the western portion will be managed with sediment structures and a detention basin located adjacent to Sullivan Avenue. The steepest slopes occur on the western portion of the site. In order to comply with the 10% maximum slope requirement for a road, significant cuts and fills will be necessary. Significant fills are planned in the area of the eastern SRD also. The movement of the soil from one area to another would require many areas to be disturbed at on time. A well developed phasing sequence is required to main a stable manageable site during construction. The initial plans did not present what I would consider a well developed phasing sequence. A meeting with myself, Jerry Iazzetta, and Design professionals resulted in an acceptable phasing plan which would only disturb areas immediately under construction and locate fill borrow areas where they will not impact undisturbed portions of the site. The current plan would also insure that the proposed detention basin would be stable when stormwater is directed to it. The soils on the steep portions of the site are mapped as MgC , Manchester gravelly loam 3 to 15 percent, and Tg, Terrace Escarpments sand and gravel. These soils have a low to medium erosion potential due to their high permeability. Erosion and sediment controls appear to be adequate but will require good routine maintenance. The steep slopes are planned to be broken up with a series of retaining walls which should adequately handle runoff provided a good vegetative cover is established. cc. Director of Planning Town Engineer DKSAssoCIATEs 6 JUL 24 1996 ' 09 FARMINGTON AVE. HARTFORD, CT 06 105 (860) 232-0700 South Windsor FAX: (860) 232-021 2 Planning & Zoning Commission July 19, 1996 Mr.Brian Edwards Collins Crossing,LLC 376 Pleasant Valley Rd. South Windsor, CT 06074 RE:Access Proposal to SAND HILL ROAD Dear Mr. Edwards: At the request of Peter DeMallie subsequent to the Wetlands Commission meeting of Wednesday night in South Windsor we were asked to review the proposal to connect Collins Crossing to Sand Hill Road in lieu of crossing the watercourse to connect directly to Nevers Road. Peter explained that the Wetlands Commission wishes to determine the feasibility of this route to eliminate the need for disturbing the brook which was proposed to be crossed with a culvert. We understand that this matter was continued to the 24th when the Commission will again reconsider this item. On this date we met with Design Professionals and performed an inspection of the section of Sand Hill Road in the vicinity of the location of a proposed connection from Collins Crossing. While the geometry of the proposed road would meet Town standards the sight distance toward Sullivan Ave on Sand Hill would be minimal. Sand Hill Road ascends steeply from Sullivan Ave and crests in front of the Church and Waldren Property. It would be essential to locate any proposed road immediately adjacent to the Waldren Property to maximize sight distance. The posted speed on Sand Hillis 35mph and while no specific speed data was available it is probable that the 85%speed in this section would be approximately 40 mph. We would then recommend a minimum corner sight distance of 400 feet. This appears to be achievable. An alternative to this location would be to move the street closer to Nevers Road/Sand Hill intersection. This would also achieve the required sight distance in each direction but locating a new intersection within 200 feet of an existing intersection is not proper planning. Further,we noted on the sketch plan flood plane limits which might be impacted by this option. We have a more basic concern about this proposal and that is that Collins Crossing,LLC does not have the control of the property to achieve this connection upon the construction of the project. The project, if this proposal is approved and construction commences,would be served by a sole access from Sullivan Ave unless additional property is acquired. We have not analyzed the effect on Traffic Operations of this limitation but it is not desirable to have one access only from a busy highway such as Sullivan Ave to a project primarily designed for mature residents. We would recommend strongly against this option as it is not proper traffic planning and inconsistent with sound access management for Sullivan Ave. Collins Crossing is not a major Traffic Generator and detailed analysis of the trips generated for this project with one access only would most likely not overtax the ability of Sullivan Ave from a capacity standpoint. However the level of traffic on Sullivan Ave is such that gaps during the peak periods for a single access plan would make left turns from this road more difficult. The option for travel to Nevers Road or Sand Hill would not be A fir Mr. Brian Edwards ' Page 2 July 19, 1996 available. Emergency access to the area would be limited to Sullivan Ave until the project was eventually connected to Sand Hill. Should access from Sullivan Ave be blocked by an accident,storm damage or similar incident the entire community of residents in Collins Crossing would be cut off from emergency services. EMS,Fire and Police would have a difficult time responding to this site and the safety of the residents becomes a concern under this concept. We met with Sgt. Mike Ritter of the South Windsor Police this morning after our field review of Sand Hill Road and provided him with mapping and the concept layout of the connection. He indicated his concern was sight distance on Sand Hill and I asked him to review the matter and advise me of his findings. I noted to him my concerns for dual access to Collins Crossing. I would be remiss if I did not close this letter by restating my concern over limiting the access to Collins Crossing to one drive to Sullivan Ave,even if temporarily. Having practiced in the public sector for over 8 years as a municipal traffic engineer and evaluated literally hundreds of sites, such a layout limiting Collins Crossing to one drive to Sullivan Ave,presents to me major questions of concern for safety of access and is not an appropriate solution in m pinion. I would hope a solution to the environmental concerns of the Wetlands commission c e eloped which will result in safe and appropriate access to this project. incer , ames W. ord, Regional Director JWF/hs cc: Peter DeMallie Connecticut Environmental Engineering Services, LLC 107 Old Windsor Road • Bloomfield, CT 06002 Phone: 860-242-6429 0 Tax: 860-242-8587 July 22, 1996 Attorney Harold R. Cummings, Esq. , // A 1610 Ellington Road South Windsor, CT 06074 Re: Collins Crossing, LLC Sullivan Road South Windsor, CT Dear Hal: I have sampled the water flowing in Plum Gulley Brook, both at the north end of the Collins property a few hundred feet from Nevers Road and at the south end of the property where the brook is closer to the road. The water in the brook flows from north to south. No contamination could be found that might be traceable to the oils found in soil near the collapsed shed at the top of the rise on this property between Nevers Road and Sullivan Avenue. Both a general screening test for Total Petroleum Hydrocarbons (TPH) and a sophisticated detailed specific test at extreme sen- sitivity for individual polynuclear aromatic hydrocarbons were run. The infra-red screening test for TPH found a trace of organic matter (1.3 parts per million) at the north end and an even lower amount (1. 0 part per million) at the south end of the property. The sophisticated gas chromatography/mass spectrometer test is known as EPA Method 8100 and looks for seventeen individual higher aromatic hydrocarbons typically found in petroleum oils, especially heavier stock oils. The test method has a reportable detection limit of 10 parts per billion or 0.010 parts per million. In these two samples there were no detectable hydrocarbons. A copy of the initial reports faxed to me by the laboratory are attached. These reports are the basis for the conclusion reached above. Very truly yours, Connecticut Environme o eering Services, LLC Dr. Donald G. Doba, , U President NO.10407 1 fi r 4.. Is-TV !, JUL 2:i i��6 South Windsor INLAND WETLANDS AGENCY �77g CONSERVATION COMMISSION ----------------------------------------------------------------------------------------------------------- 07/22/96 NON 15:16 FAX 860 242 8587 PDS ENG.& CONSTRUCTION Q003 FROM PHOENIX LABORATORIES (FRI) 07. 19' 96 14:42/ST, 14.40/NO. 3561199405 P 2 SAMPLE PROGRESS REPORT Phoenix Environmental Labs Date ; 07-19-1996 Time: 15 :40 . 07 Sample T . D. ABO6149 Date collected: 07/17/96 Status: In final report queue Date, eubmitted: 07/17/96 Purchase order number: CC Due date : 07 22 96 Project account. cede : Specification checking: off Location code: CTEES Descript: PROD_ COLLINS NEVERS RD NORTH Sample collector: DD Matrix: WATER Ana Lys ia Rer-ule MOT. Unit Rlc origin Due Date Shamed Nnd+ad Axe). Pvlynuclear Aromacia NC CeMp latod ug/L manual 07/22/96+ 07/9.8/96 07/18/96 SS Sep. F nt;el Semi-vel Carnp7.cced manual 07/22/96 07/17/96 07/18/76 E/D Toc.Petrnleum RC 1.13 0.5 my7/T manual 01/22/96 07/19/96 07/19/96 JRB QUocation for Servicea ComyI cnod manual 07/22/96 07/1,7/96 15;3e 07/17/96 AR Results of mult,icomponent analysis Polynuelear Aromatic HC Original pource manual entry A.nalyte Name Result MDL N'D **x *r* Polyn.uclear Aromatic KC ND Ac enapht he:ne NO 10 . 0 Acenaphthylene ND 10 . 0 Anthraceae ND 10 . 0 Senzo (a) anthracezze ND 10 . 0 Benzca (b) fluora.nthen.e ND 10 . 0 Benzo (k) fluora.nthene ND 10 . 0 Benzo (g,h, i) perylene ND 1.0 . 0 Benzo (a) pyrene ND 10 _ 0 Chrysene ND 10 . 0 Dibenzo (a,h) anthracene ND 10 . 0 Flucrannthene ND 10 . 0 Fluorene ND 10 . 0 Indeno (1,2 ,3-cd) pyren.e ND 10 . 0 Naphthalene ND 10 . 0 Phenanthrene ND 10 . 0 Pyrene ND 10 . 0 2-Methylnaphthaleae ND 10 . 0 End of progress report on sample: ABOG149 U f/GWi lli 11U1V l:i.lip " (FRI) 07. 19- 96 14:42/5T, 14:40/NO. 3561199405 r 3 FROM[ PHOENIX LABORATORIES � SAMPLE Pkt,OC3�RE;33 REPORT' , PhoeziiX Enu�.rarYmen.tal Labe Date : 07-19-1996 xirne: 15140 : 07 ��1�: I.D. ABo6�.�o Date collected: 07/17/96 Status : Its. final. report queue Date submitted: 07/17/96 Purchase order number: CC Due date. ion checking; project account code : specification eheCl�ing, off Location code : Ccode Descript : PROj: COLLINS NEVER$ RD SOUTH TSES Sample collector; DD Matrix: WATER a�nalysie Retitllt n�1L vn .t RTr or3�m Poe n,str. Stgrrnd, -- Fndad An.). -------- ------- `'^•'-•""•_••................. manual 07/z�/96 07/18/96 p7/18 9G Pclynuclanz A.romasxc He Complczsd vtq/� 07/1B/3G ��I9 Com Zeced manual Sep. runnel Semi-VD1 p manual 07/19/PG 07/19/ps ,.TRH 1.OU O.G mg/L TaC.PeCrCleum ITC mamu&1 o7/32/96 07/17/96 15c�.4 07/17/96 AR ¢uacar.ion for serviced Completed Results of multicomponent analysis polyauclear Aromatic SC original source Manual entry Result MDL Analyte Name -------- ---- ---- ----� ND C ND Polynuclear aromatic H ND 10 . 0 Acenaphthen.e NO 10 .0 Acenaphthylene ND 10 . 0 Anthracene ND 10 . 0 Ben.zo (a) anthracene ND 10 - 0 Benno(b) fl.uoranthene ND 10 . 0 Benno (k) fluoranthen.e ND 10 . 0. Benno (g,h, j) perylene ND 10 . 0 Benzo (a) pyrene ND 10 . 0 Chrysene ND 10 . 0 Dibenza (a, h) a.nthracene ND 10 . 0 Fl.'[ orantherie ND 10 . 0 Fluorene Np 10 . 0 zj-jdeno (1, 2 , 3-cd) pyren.e ND 10 . 0 Naphthalene ND 10 . 0 Phenanthrene ND 10 . 0 Pyrezae ND 10 . 0 2-Methylnaphthalene End of pragress report on sample: AB06150 07/10/90 FRI 15:41 [TX/Rx NO 57381 t ti Connecticut Environmental Engineering Services, LLC 107 Old Windsor Road • Bloomfield, CT 06002 Phone: 860-242-6429 0 Fax: 860-242-8587 July 22, 1996 Attorney Harold R. Cummings, Esq. 1610 Ellington Road South Windsor, CT 06074 Re: Collins Crossing, LLC Sullivan Road South Windsor, CT Dear Hal: I have sampled the water flowing in Plum Gulley Brook, both at the north end of the Collins property a few hundred feet from Nevers Road and at the south end of the property where the brook is closer to the road. The water in the brook flows from north to south. No contamination could be found that might be traceable to the oils found in soil near the collapsed shed at the top of the rise on this property between Nevers Road and Sullivan Avenue. Both a general screening test for Total Petroleum Hydrocarbons (TPH) and a sophisticated detailed specific test at extreme sen- sitivity for individual polynuclear aromatic hydrocarbons were run. The infra-red screening test for TPH found a trace of organic matter (1.3 parts per million) at the north end and an even lower amount (1. 0 part per million) at the south end of the property. The sophisticated gas chromatography/mass spectrometer test is known as EPA Method 8100 and looks for seventeen individual higher aromatic hydrocarbons typically found in petroleum oils, especially heavier stock oils. The test method has a reportable detection limit of 10 parts per billion or 0.010 parts per million. In these two samples there were no detectable hydrocarbons. A copy of the initial reports faxed to me by the laboratory are attached. These reports are the basis for the conclusion reached above. Very truly yours, Connecticut Environme o eering Services, LLC [//fir"/ �/ �,���,D �•QQ �'�` gyp, Dr. Donald G. Doba, President klkb �IndsOS °ENCYS� N�vl �'NCOt11M�ss10N -i--,---R--------------------------------------------------------------------------------------------------- 07/22/96 KON 15:16 FAX 860 242 8587 PDS ENG.& CONSTRUCTION 003 i' FROM PHOENIX LABORATORIES (FRI) 07. 19' 96 14:42/ST. 14: 40/NO, 3561199405 P 2 SAMPLE PROGRESS REPORT Phoenix Environmental Labe Date-, 07-19-1996 Time: 15 :40 : 07 Sample I.D. AS06149 Date collected: 07/17/96 Status In final report queue Date, submitted: 07/17/96 Purchame order number: CC Due date : 07/22/96 Project account code : Specification checking: off Location code: CTEES Descript : PROJ: COLLINS NEVERS RD NORTH Sample collector: DD Matrix: WATER . Analysia Rer,.ule MDT. Un1c Rlc origin Due Date Started Efndpd Ani --- -- --- ---------------------- -- - - -- -------------- ---------- ------- 1------- -------- --- Falynucleaz 9aramaeic 14C Complaead ug/L manual 07/22/96 07/1.8/96 07/15/96 88 Bap. Fxm"l semi-vel camplaced manual 07/22/96 07/17/96 07/19/76 E/D Toc.Perre,leum 9C 1.13 0.5 mg/L manual 01122/9G 07/19/96 07/1910 3p.8 Quocarfon for Servicea Comg]onod manual 07/22/96 07/17/96 15:24 07/17/96 All Results of mul'ticompon.en.t a.n.alyaia Polynuciear Aramatic HC original source Manual entry AnalyLe Name Result MDL --- ------ --------------------------------- -------------- --- ----- Polynuclear Aromatic RC ND Acenaphthen.e ND 10 . 0 Acen.aphthylene ND 10 . 0 AntYira.cen.e ND 10 . 0 Berizo (a) anthracene ND 10 . 0 8enzo (b) fluorant.hene ND 10 . 0 Benzo (k) fluoranthene ND 10 . 0 Senzo (g, h, i) perylene ND 3.0 . 0 Benzo(a). pyxene NO 10 - 0 Chrysene ND 10 . 0 Dibenzo (a,h) anthracene ND 10 . 0 Fluoranthene ND 10 . 0 Fluorene ND 10 . 0 Indeno (1, 2, 3-cd) pyrene ND 10 . 0 Naphthalene ND 10 . 0 Phenan.threne ND 10 . 0 Pyrene ND 10 . 0 2-Methylnaphthalene ND 10 . 0 End of progress report on sample : ABOG149 01 140N lb:i6 1°:i_' Uu- .. i— ..)I , I„ 01 FROM PHOENIX LABORATORIES (FRI) 07. 19' 96 14AYST, 14:40/N0. 3561199405 r SANPTuE P'ROGRzSS REPORT Phoenix Environmental Labe Date : 07-19-1996 Time : 15 :40 : 07 sample I.D. AH06150 Date collected: 07/;-7/96 status : In final report queue Date submitted: 07/J-7/9& Purchase order number; CC Due date: J project Accountcount code ; Specification on checking; off 6 ' Dsacra.p t : pROJ: COLLIN$ NEVER,S RD SOUTH Location code : CTEES Sample collector; DD Matrix: WATER P1rtalyesie ueRuit rm7L vn .t R7h_ orxg�a. T.1uc Patio gCgrrod, Fnerd An.), v /L . _......_. ............... .... - manual 0712AI96 07/16/96 97/18/96 BB pa�.ynuclnsax.7lrama=.�- HC Cvmp7.Cc•=� manual Q7/22/9G 07/17/96 07/iBl95 I:/T1 gap. Funnel semi-rbl completed 719/ G Ta$ 1.aa o-G mq/L manual 07/22/96 07/19/pc 07 1 P Toc.Pecralaum FTC manual 07/22/96 07/17/QG 15:24 07/11/96 AR. Quocarlon for Sevficeq CompleeeQ Results of multicomponent analysis polyp uclear Aromatic HC original source Manual entry Result MDL Analyte Names ------- -------- ------------- ND Poly, nuclear Aromatic HC ND ND 10 . 0 Acen.aph.then.e NO 10 . 0 Acenaphthylene ND 10 . 0 Anthracene ND 10 . 0 Ben.zo (a) anthracene ND 10 . 0 Ben.zo(b) fluoranthene ND .. 10 . 0 Senzo (k) fluoranthene ND 10 . 0 Ben.zo (g, h, J) perylene ND 10 . 9 Ben.zo (a) pyrene ND 10 . 0 Chrysene ND 10 . 0 Dibenzo (a, h) anthracene ND ;L0 . 0 Fl.uoranthene ND 10 . 0 Fluorene ND 10 . 0 Irideno (1., 7, 3-cd) pyrene ND 10 . 0 Naphthalene ND 10 . 0 Phenanthrone ND 10 .0 pyrene ND 10 . 0 2-Methy1naphthalene End of progres$ report on sample : z-�B06150 07/19/96 FRI 16;41, 1TX/RX No 57381 t"W N SE4< �- Town at O c U s fi 1540 SULLIVAN AVENUE • SOUTH WINDSOR, CONN. 06074 tiaSOR oo� AREA CODE 860/644-251 1 July 30, 1996 Collins Crossing LLC c/o Attorney Harold Cummings CERTIFIED MAIL 1610 Ellington Road P O Box 667 South Windsor, CT 06074 Dear Attorney Cummings: Re: Appl #96-31P, Collins Crossing At the July 24, 1996 meeting of the South Windsor Wetlands Agency/Conservation Commission, a motion to approve the request for significant activity associated with the construction of a stream crossing on property located on the westerly side of Nevers Road, northerly of Sand Hill Drive, RR zone ' 2 failed. (Assessor's map #89, parcel 23 & 8) a ed. The concerns expressed by the Agency were: 1. a major impact on the watercourse. 2. an environmental impact upon the area. 3. there were feasible and prudent alternatives to the proposed stream crossing. Very truly yours, INLAND WETLANDS 70iza�be Y/CONSERVATI N COMMISSION k,ik A. Warren, C airman EAW/pmm cc: Town Engineer Chief Building Official Planning & Zoning Commission Zoning Board of Appeals Design Professionals, Inc. TO BE PUBLISHED IN THE JOURNAL INQUIRER WEDNESDAY, JULY 31, 1996 SOUTH WINDSOR - IWA/CC At the July 24, 1996 regular meeting the Commission voted to take the following action: 1. Denied appl #96-31 W, Collins Crossing - IWA/CC permit for significant activity associated with the construction of a stream crossing on property located on the westerly side of Nevers Road, northerly of Sand Hill Drive, RR zone (Assessors map #89, parcel 23 & 28) Dated at South Windsor, CT this 25th day of July,. 1996 Elizabeth A. Warren, Chairman AU RK RETURN DATE: AUGUST 20, 1996 SUPERIOR COURT COLLINS CROSSING, L.L.C. J. D. OF HARTFORD/NEW BRITAIN VS. AT HARTFORD INLAND WETLANDS AGENCY/ AUGUST 1, I996 CONSERVATION COMMISSION OF THE TOWN OF SOUTH WINDSOR, ET AL z I T CITATION U � j $ I To Any Proper Officer: 5 R By authority of the State of Connecticut you are hereby commanded to summon the o � a U. INLAND WETLANDS AGENCY'CONSERVATION CON MISSION of the Town of South z o Windsor, the TOWN OF SOUTH W NDSOR, LLkNI A.KURAS, as Town Clerk of the Town of � 5 w South Windsor, 1540 Sullivan Avenue, South Windsor, Connecticut 06074 and ELIZABETH A. U � o S WARREN, as Chairman of the Inland Wetlands Agencv/Conservation Commission of the Town 0 3 � o of South Windsor, 494 Abbe Road, South Windsor, Connecticut 06074 and SIDNEY z Z HOLBROOK, as Commissioner of Environmental Protection, 79 Elm Street, Hartford, J J W � Connecticut 06106 to appear before the Superior Court within and for the Judicial District of Hartford/New Britain at Hartford, 95 Washington Street, Hartford, Connecticut 06106 on August 20, 1996 then and there to answer unto the attached complaint of COLLINS CROSSING,L.L.C., I II II c/o Attorney Harold R. Cummings, 1610 Ellington Road, P. O. Box 667, South Windsor, CT 06074 by leaving with or at the usual place of abode of the Chairman or Clerk of the Inland Wetlands Agency/Conservation Commission of the Town of South Windsor and the other parties above named, a true and attested copy of the complaint and of this citation at least 12 days before the return date. 0 0 N BOND The plaintiff as principal and Suzanne Sanborn, 1610 Ellington Road, South Windsor, J � NR Connecticut 06074 as surety are recognized in the sufficient sum of S250.00 etc.,to prosecute z • z $ this appeal to effect and comply with the orders and decrees of this court. Q U Zo Hereof fail not, but of this writ %vith your doings thereon make due service and return. � 3 Dated at South Windsor, Connecticut this 1 day f gust, 1996. 0 U � � a S H d R. Cummings 3 a Commissioner of the Superior Court Please enter the appearance of Cummings and Lanza, L.L.C. Juris "102281 Z for the plain 'ff O L S CROSSING, L.L.C. J J W � O m Harold R. C ings of Cummings and Lanza, L.L.C. 1610 Ellington P. O. Box 667 South Windsor, CT 06074 ATT SOUTH\203i i I I RETURN DATE: AUGUST 20, 1996 SUPERIOR COURT COLLINS CROSSING, L.L.C. J.D. OF HARTFORD/NEW BRITAhi 1 0 VS. AT HARTFORD 0 INLAND WETLANDS AGENCY' AUGUST 1, 1996 CONSERVATION COMMISSION OF y THE TOWN OF SOUTH WINDSOR, ET AL J J N � 3 � APPEAL n To the Superior Court for the Judicial District of Hartford/New Britain at Hartford on 3 I August 20, 1996 comes COLLINS CROSSING, L.L.C. of 1610 Ellington Road, South Windsor, w Connecticut appealing from a decision of the INLAND WETLANDS U � as AGENCY,/CONSERVATION OF Thy TOWN OF SOUTH WINDSOR and complains and says: � o q 0 1 The defendant, Inland Wetlands Agency/Conservation Commission of the Town of z South Windsor(hereinafter referred to as "Commission") is a municipal agency exercising state J and local regulatory authority pursuant to Chapter 440 of the Connecticut General Statutes. 2. The plaintiff, Collins Crossing, L.L.C. is a limited liability company duly authorized under the laws of the State of Connecticut and is the legal owner of record of two certain pieces i I i I or parcels of land comprising approximately 30.78 acres located westerly of Nevers Road, northerly of Sand Hill Road and easterly of Sullivan Avenue in said Town of South Windsor. Said parcels contain the Inland Wetlands which are the subject of this appeal. 3. The subject property is presently zoned RR and is shown on the Town of South N Windsor's Assessor's map#89 as parcels 23 and 28. The premises are further more fully 0 0 described in two certain deeds both dated February 10, 1996,the first recorded at Volume 878 Page 80 and the second at Volume 878 Page 82 of the South Windsor Land Records. V i l J g N4. On or about June 4, 1996, the plaintiff, Collins Crossing, L.L.C. applied to the z • z Commission for a wetlands permit to permit the installation of a culvert and rip rap within the Q U zo Plum Gully Brook wetlands area in order to allow the crossing of Plum Gully Brook by a street � 3 5 0 and utilities as more particularly described and set forth in said application of the plaintiff to the Ui Commission dated June 4, 1996. A public hearing was held on said application which public o � 5 o hearing commenced on July 3, 1996 and continued on July 17, 1996 and July 24, 1996. 5. On July 24, 1996 the Commission denied the application by a vote of 6 members W against and 3 members in favor of the application and notice of such decision was duly o i m published in the JOURNAL.LNQUIRER on July 31, 1996. 6. The plaintiff, Collins Crossing, L.L.C., is aggrieved by the decision of the Commission because as the legal owner of the property it has a specific, personal and legal interest in the subject matter of the Commission's decision and was specifically and injuriously effected in its property, financial and other legal rights by the decision appealed from including but not limited to the fact that it and/or persons and agents working on its behalf have expended and will expend substantial sums in connection with and in preparing plans and specifications for the development of said property and that, by the Commissions's decision, the plaintiff has a been deprived of and will be deprived of the reasonable use of and economic benefit from its property. J � N 7. Plum Gullv Brook runs generally north to south along the entire frontage of the z aI plaintiffs property as plaintiffs property borders Nevers Road. Plaintiff has no other means of z 0 access to Nevers Road except to cross Plum Gully Brook. By its denial of plaintiffs right to install a culvert to support a roadway and to install utilities within the Plum Guth.•Brook Uj wetlands area, the Commission has denied the plaintiff reasonable access to its property. Said 09 3 a action of the Commission constitutes a taking without compensation within the meaning of So .. 0 Chapter 440 of Connecticut General Statutes. Z W 8. By denying the application, the Commission acted illegally, arbitrarily and in abuse O 0 of the discretion vested in it for the following reasons: a. The U.S. Army Corps of Engineers and the Connecticut Department of Environmental Protection had already approved the plaintiff s application and had therefore i i I i i found no significant disturbance of the wetlands area. By its denial of the permit previously approved by the U.S. Corps of Engineers and the Connecticut Department of Environment Protection, the Commission exceeded its statutory and regulatory powers. b. The Commission's regulations, as applied by the Commission, are illegal and o , invalid.. O c. The Commission unreasonably failed to approve an application which U y otherwise complied with the Commission's own regulations. 1 N I d. The Commission failed to assign a proper reason for the denial of the cz ^ application. a � zo e. The Commission found that a feasible and prudent alternative to plaintiff's � 3 plan existed when in fact no such alternative exists. LU f. The Commission decided the application based on factors not contained in its 02 3 ° regulations and/or upon improper interpretation of its own regulations. 50 g The Commission's denial was not supported by the evidence in the record- h. The reasons given for the denial were inadequate, vague, improper and o j m unsupported by the record i. The denial of the plaintiff's reasonable access to its property from Nevers Road without compensation, under the circumstances of this case, constitutes an unlawful taking of iI its property. 9. The Commission's denial of the plaintiff's application was arbitrary and capricious. WHEREFORE, the plaintiff appeals from the Commission's decision denying the plaintiff, Collins Crossing, L.L.C.'s application and prays that the Court: I. Sustain the appeal, reverse the Commission's decision and declare said denial to be Z N nul and void; cr 2. Direct the Commission to approve said application,as filed; J N 3. Award money damages as compensation for the taking, without compensation, of the g ` z plaintiff's right of access to Nevers Road; Q U Z4. Such other relief as may be allowed in law and equity. Dated South Windsor this 1 st day of August, 1996. � 8 PLAINTIFF: COLLINS CROSSING,L.L.C. UX oS 3 ° a Q . � c By 4L= Z Harold RLUximings of Cummings and Lanza, L.L.C.J • W Its Attorneys 1610 Ellington Road South Windsor,CT 06074 (860)644-3473 Juris No. 102281 ?•{ S�L�N�Zp31 �h. I I � i � MEMO From: Phyllis M. Mann, Recording Secretary Inland Wetlands Agency/Conservation Commission Town of South Windsor To: Attorney Barry Guliano Town Attorney Date: August 12, 1996 Subject: Appl #96-31W, Collins Crossing Enclosed are copies of material that were inadvertently left out of the file for application #96-31W, Collins Crossing. It is as follows: report from Connecticut Environmental Engineering Services, LLC, dated July 16, 1996; report from Dr. Clarence Welti, P.E., P.C. dated July 15, 1995 and report from CR3 Landscape Architects dated July 17, 1996 comments from Jerry Iazzetta, Town Engineer, dated July 12, 1996 comments from Jeffrey Folger, Zoning/Wetlands Enforcement Officer, dated July 17, 1996 memo....memo....memo....memo....memo....memo....memo....memo....memo -- av�oeer,�optic `� ,-s -_ r►-�C_ vvu k"44-w I-. Card n� fir/� ! oti,,G w•/�•�� �i1�1�1i�-�,�'------- . r '- C�7cv�-v - - ----_ �-�r�_-fib�+�'�- - • �`�o - � --- --- Cam- v 4e s _ �, � L ire.. •�—���c s ��.0 T�-�, - - -------------- /17 _ 1, ��i�.t. w�.G� �'Nw� s�N►Gi✓ � _ ---- ---- --- . / --- 049 jt„�e to August 30, 1996 _SEP 1 2 1996- cAavkh VIY'i+Ej"dNr 1NMAbQhW iAAtWSad§AW1 Sidney Holbrook COW"WMQW NWWNN Commissioner Department of Environmental Protection State of Connecticut 79 Elm Street Hartford, CT 06106 Re: Collins Crossing,L.L.C. Sullivan Avenue South Windsor, CT. Dear Mr. Holbrook: As a concerned citizen, I am writing to your Department relative to a proposed housing development that is in the planning stages in the Town of South Windsor. On May 7, up to twenty 55-gallon drums of unknown contents were transported across my property (1212 Sullivan Avenue) by a local resident (Russell Levack). The drums had been located on the Collins property in the woods at the top of the hill. The drums were transported using a farm tractor and farm trailer. Some of the drums had contained an oily liquid as verified by myself and others. We notified the Department of Environmental Protection (DEP) Oil and Chemical Spills Division immediately. We were instructed by this department that they would not get involved until the local fire Marshall had investigated the incident. We notified the local Fire Marshall, William Lanning. Mr. Lanning went to the Levack Farm later that afternoon. Mr. Lanning was shown 29 empty 55-gallon drums and was told by Mr. Levack that those were the only drums he removed. Mr. Lanning and Mr. Geoff Folger (Town Environmental Officer) observed the site and, based on deep rings in the soil,concluded that drums had recently been removed. Upon consultation with Mr. William Mitchell, owner of Environmental Services, Inc., we were told that prior to the drum removal incident,he had been contacted to remove the drums by Collins Crossing, L.L.C. Further contact between Mr. Mitchell and Collins Crossing resulted in Mr. Mitchell being instructed that is services would no longer be needed; the drums would be removed by someone else. Relative to our incur,the Town Manager,Mr.Matt Galligan,requested that Mr.Levack step down from his position of Chair.Persoh on the Town of South Windsor Planning and Zoning Commission with reference to an further matters of this project. Y P J Mr. Folger looked into the matter and recommended that Collins Crossing L.L.C. conduct a sampling of the area where the drunIs had been located. This request prompted Collins Crossing, L.L.C. to retain Connecticut Environmental Engineering Services of Bloomfield, Connecticut, an environmental consulting firm operated by Mr.Donald Dobay., Mr. Dobay observed the area where the drums had been'removed and conducted sampling of some wells in the area,including my well.'He concluded that the material in the area was possible motor oil (see attached letter dated July 16, 1996). On July 22, a letter was presented to the Inland Wetland Commission(per their request during a public hearing) stating that traces of oil had been detected in Plum Gulley Brook. Sidney Holbrook Commissioner Department of Environmental Protection Page 2 On July 27, we received a report describing the sampling events that were conducted on the drinking water wells in the area. My well and one other well were sampled for volatile organics, PAHs and pesticides. All other wells were sampled for basic potability. It appeared that contamination found on the site had not reached the drinking aquifer at the two wells. (See report Well Water Analyses) Mr. Dobay conducted additional soil sampling in two areas of the site and found contamination at both these areas (see report dated August 19, 1996). He reported that these areas will need to be removed and disposed of. We are asking your Department to review the limited information collected about a 30-acre plus site and render a decision that a comprehensive environmental assessment be conducted on the entire site. We recommend this assessment include additional sampling in the orchard area, including soil borings to, to define the magnitude of the pesticide and metals contamination, as well as the extent. We would further encourage the oily area be sampled for heavy metals and pesticides and this area be defined as to magnitude and scope. There are four other areas of concern that we have observed. An oil-stained area � ) 10 ft x 25 ft near a large barn that is to be demolished; an old underground gasoline storage tank; possible lead paint on the old out-building that is to be demolished which is within 20 feet of my yard where my grandchildren play, and the asbestos siding on the large barn that is also t6 be demolished. We further recommend that a comprehensive remedial action plan be submitted to the Town prior to the authorization of the construction/demolition work. This remedial plan should address the type of contamination, the estimated extent of contamination to be removed, the engineering controls used to control dust and fumes from blowing onto our property,how this material is to be transported off-site without crossing our property and where this material will be transported for disposal. Also confirmation sampling should be conducted to confirm that cleanup was achieved. We have made these requests for help based on the incomplete site information we have received to date,.the fact that the developer previously conducted a drum removal activity without following proper procedures, and after consulting with the Town Environmental Officer, Mr. Folger. Mr. Folger has stated that comprehensive information about the site would be helpful to the Town but he seems to feel a request for this information is outside his jurisdiction, and he recommended we contact your Department. Sidney Holbrook Commissioner Department of Environmental Protection Page.3 A response to these issues is needed prior to the Town Planning and Zoning meeting on September 10, 1996. Thank you for your prompt attention to this matter. Sincerely, 4 ?- &� John&Barbara Callahan 1212 Sullivan Avenue South Windsor, CT (860) 644-1074 attachment cc: Mr.Geoff Folger,Town of South Windsor Environmental Officer 1540 Sullivan Avenue South Windsor, CT STATE OF CONNECTICUT DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CONNECTICUT 06106 T (D Sidney J. Holbrook PHONE: (203) 424-3001 Commissioner September 6, 1996 Mr. and Mrs. John Callahan 1212 Sullivan Avenue .' South Windsor, Connecticut 06074 S EP 9 1996 South Windsor Dear Mr. and Mrs. Callahan: Planning & Zoning Commission Thank you for your letter of August 30th concerning the Collins Crossing property on Sullivan Avenue in South Windsor. Your letter and the reports submitted with it have been reviewed by the Waste Engineering and Enforcement Division and the Permitting, Enforcement and Remediation Division of this department to assess the studies done by Connecticut Environmental Engineering Services (CEES) and whether improper removal of materials occurred from the site. We confirmed, through contact with Fire Marshall William Lanning, that the barrels removed from the site were empty. This may explain why Environmental Services, Inc. was not employed to remove the drums, since removal of empty drums would not require their specialized services. No violation of State or Federal law or regulations occurred in the removal of the drums if they did not contain hazardous wastes at the time. One barrel was found to be approximately half full of useable oil product. The developer indicated intent to gainfully use this product as fuel, which is consistent with recommended DEP guidance. To the developer's credit, he voluntarily performed an assessment of the site at the request of South Windsor officials. Connecticut Environmental Engineering Services, a reputable firm with much experience in this field, was hired to perform the study. The study was a reasonable one with sound recommendations. We encourage the Town of South Windsor to adopt those recommendations, contained on page 2 of the Soil and Drum Content Analysis report, as conditions of its approval, should the Town see fit to grant such approval for this proposal. Your letter also mentions an underground gasoline storage tank on the property. If the tank is no longer used, which sounds like it is the case, it needs to be abandoned either through its removal or by filling with inert material such as sand or concrete. It must be empty of all contents before it is removed or filled. Asbestos siding on the barn is also referenced in your letter. If such material is in place on the barn, both the Departments of Environmental Protection and Health Services would have to be notified before the barn is demolished. DEP has jurisdiction over asbestos disposal. The disposal of asbestos-containing material requires the prior approval of the DEP Waste Engineering and 4 Printed on recycled paper Mr. and Mrs. Callahan 2 9/6/96 Collins Crossing, South Windsor Enforcement Division to ensure that the material is properly bagged, labeled, and disposed of in an approved landfill. For the benefit of Town officials, who will be copied on this letter, the applicant should be advised to contact David McKeegan on the DEP Waste Engineering and Enforcement Division aVQ 3313 or 424-3366 regarding information on proper disposal. The Department of Health Services also has jurisdiction over asbestos removal. I have faxed a copy of your letter to them and they will contact you separately. Either Ron Skomro or Bill Stapleton at DOHS should be contacted by the developer at 509-7367. Lastly, in our phone conversation with you this afternoon, you expressed your concern over possible pesticide contamination. I discussed this issue with Brad Robinson or our Pesticides Division (ph. 424-3369)who felt that the levels of DDE and DDD (the breakdown products of DDT) set forth in the assessment report were very low. Since those levels were measured at the base of the drum in the storage area and thus represent a `hot spot' concentration, levels elsewhere would be lower. DDT's breakdown products of DDD and DDE can be found almost anywhere testing is done since they are so widely distributed in our environment, so their mere presence does not indicate a contamination problem. In the absence of either suspected criminal action of pesticide dumping or a demonstrated water quality problem, DEP does not become involved in pesticide testing at a site such as Collins Crossing. With the absence of detectable pesticide concentrations in the two well water samples and the very low levels found at the storage area `hot spot', there would be no reason to do additional testing in the neighborhood. Thank you again for your letter. If you have any further questions, please contact Frederick Riese of my Office of Environmental Review at 424-4110. Sincerely, Sidney J. Holbrook Commissioner cc Robin Bray, DEP/WEED Doug Zimmerman, DEP/PERD David McKeegan, DEP/WEED ✓GeoffFolger, Town of South Windsor STATE OF CONNECTICUT DEPARTMENT OF PUBLIC HEALTH 90 "Al 339191WIZO Mf Iy September 6, 1996 SEP 9 I996 John & Barbara Callahan South Windsor INLAND WETLANDS AGENCY 1212 Sullivan Avenue CONSERVATION COMMISSION South Windsor,CT 06074 RE: Collins Crossing, L.L.C. Sullivan Avenue, South Windsor, CT Dear Mr. & Mrs. Callahan: This letter is to summarize the Connecticut Department of Public Health's (Department) regulations concerns about demolition of buildings and asbestos abatement. This letter was initiated by a letter you sent to the Connecticut Department of Environmental Protection's (CTDEP) Commissioner, dated August 30, 1996; regarding questions concerning various buildings at the above referenced site. In my conversations with Mr. Geoff Folger, South Windsor Environmental Officer, I learned the "barn" is presently being used as an antique store. Thus this structure's future demolition would fall under the regulations of the U.S. Environmental Protection Agency. These regulations are the asbestos National Emissions Standards for Hazardous Air Pollutants (NESHAP, 40 CFR Part 61) and the Model Accreditation Plan (MAP, 40 CFR Part 763). In addition, the demolition of the structure(s) falls under the Connecticut General Statutes and the Regulations of Connecticut State Agencies. As is required under both the Department's and CTDEP's regulations, all ACM must be removed prior to demolition. This removal also includes Category I and Category II non-friable ACM. The following information is provided to you: A copy of the U.S. EPA's Asbestos NESHAP (National Emission Standards for Hazardous Air Pollutants), 40 CFR Part 61 . A copy of the differences between the Department's regulations and the asbestos NESHAP regulations. The asbestos NESHAP regulations for demolition apply if the building to be demolished, meets the NESHAP definition for "facility", which is any institutional, commercial, public, industrial or residential structure, installation or building (including any structure, installation or building r (860)509-7367 !i)hoi; 0,,i i, e for Ili-' (860), -nQ S 1Aip l i Il ors 410 coplto .J;c';rit° Aj,% t — -- r �ioV �i)��) ' htcrrtlnrd, Ci 1)61 ,4 ?n Ecltrul Oppol-tu+ritY Fmhlover Page 2 Mr. & Mrs. Callahan September 6, 1996 containing condominiums, or individual dwelling units operated as a residential cooperative, but excluding residential buildings having four (4) or fewer dwelling units);... * If the building that is to be demolished meets the above definition for facility, an inspection by a Connecticut licensed asbestos inspector is required to determine if asbestos is present prior to demolition. * Since asbestos containing material (ACM) must be analyzed by a laboratory, the inspector is required to take bulk samples. A visual survey or "NESHAPS" style inspection that determines ACM via a visual inspection is invalid. Such persons, not licensed by this Department will be cited for non-compliance. * If asbestos-containing material (ACM) is present in the building to be demolished, it must be abated by a Connecticut licensed asbestos contractor prior to demolition complying with all federal and state regulations. * Buildings to be demolished that do not meet the NESHAP definition for facility should be inspected for ACM by a Connecticut licensed asbestos inspector prior to demolition. If the inspection was not conducted and ACM was in fact present and the demolition occurred without having the ACM abated, the building owner and the demolition contractor would be in violation of the regulations of Connecticut State Agencies. Any person who knowingly violates any provisions of the Connecticut General Statutes Sections 19a-332 to 19a-332c, inclusive, or Sections 20-435 to Section 439 inclusive, shall be fined not more than five thousand dollars or imprisoned for not more than one year or both. * If a building is to be demolished under the order of a state or local government agency, issued because the building is structurally unsound and in danger of imminent collapse, demolition may occur without prior removal of ACM if the Department has approved an application for alternative work practices (AWP) prior to demolition. The AWP approval is based upon a determination that the AWP provides an equivalent or greater measure of asbestos emission control when compared to state regulatory control requirements. The demolition contractor in these instances would have to licensed as an asbestos contractor by this Department. All demolition debris would be treated as asbestos waste, handled, transported, and disposed as such. Page 3 Mr. & Mrs. Callahan September 6, 1996 In an effort to ensure that buildings to be demolished are free of all ACM, this Department recommends that prior to the issuance of a demolition permit by the local building inspector's office, that proof be provided, in the form of a licensed asbestos inspector's report, indicating that the building does not contain asbestos. If ACM is present in a building, this Department can assist the building owner with proper procedures for abating the ACM prior to demolition. After the building has been abated by a licensed asbestos contractor and proof is presented to the inspector's office, the demolition permit can be issued. If a building is determined to not contain asbestos, the demolition contractor does not require a license as an asbestos abatement contractor. I trust this information will be useful to the you. If you have any questions do not hesitate to contact the Indoor Air Program at (860) 509-7367. Sincere) William M. Stapleton, Jr. Environmental Sanitarian II Indoor Air Program Division of Environmental Health c: C141r. Geoff Folger, South Windsor Environmental Officer Mr. Fred Riese, CT DEP, Office of Environmental Review Mr. Harold Cummings, Esq. Collins Crossing, L.L.C. attachments a2:\callahn STATE OF CONNECTICUT DEPARTMENT OF ENVIRONMENTAL PROTECTION Our ,o+""`� 79 ELM STREET HARTFORD, CONNECTICUT 06106 ARMS? r Sidney J. Holbrook PHONE: (203) 424-3001 Commissioner September 6, 1996 Mr. and Mrs. John Callahan } . 1212 Sullivan Avenue South Whlt sor, Connecticut 06074 S EP 9 1996 South Windsor Dear Mr. and Mrs. Callahan: punning & Zoning Commission Thank you for your letter of August 30th concerning the Collins Crossing property on Sullivan Avenue in South Windsor. Your letter and the reports submitted with it have been reviewed by the Waste Engineering and Enforcement Division and the Permitting, Enforcement and Remediation Division of this department to assess the studies done by Connecticut Environmental Engineering Services (CEES) and whether improper removal of materials occurred from the site. We confirmed,through contact with Fire Marshall William Lanning, that the barrels removed from the site were empty. This may explain why Environmental Services, Inc. was not employed to remove the drums, since removal of empty drums would not require their specialized services. No violation of State or Federal law or regulations occurred in the removal of the drums if they did not contain hazardous wastes at the time. One barrel was found to be approximately half full of useable oil product. The developer indicated intent to gainfully use this product as fuel, which is consistent with recommended DEP guidance. To the developer's credit, he voluntarily performed an assessment of the site at the request of South Windsor officials. Connecticut Environmental Engineering Services, a reputable firm with much experience in this field, was hired to perform the study. The study was a reasonable one with sound recommendations. We encourage the Town of South Windsor to adopt those recommendations, contained on page 2 of the Soil and Drum Content Analysis report, as conditions of its approval, should the Town see fit to grant such approval for this proposal. Your letter also mentions an underground gasoline storage tank on the property. If the tank is no longer used, which sounds like it is the case, it needs to be abandoned either through its removal or by filling with inert material such as sand or concrete. It must be empty of all contents before it is removed or filled. Asbestos siding on the barn is also referenced in your letter. If such material is in place on the barn, both the Departments of Environmental Protection and Health Services would have to be notified before the barn is demolished. DEP has jurisdiction over asbestos disposal. The disposal of asbestos-containing material requires the prior approval of the DEP Waste Engineering and Pmw on racycb0 paper . ' Mr. and Mrs. Callahan 2 9/6/96 Collins Crossing, South Windsor Enforcement Division to ensure that the material is properly bagged, labeled, and disposed of in an approved landfill. For the benefit of Town officials, who will be copied on this letter, the applicant should be advised to contact David McKeegan on the DEP Waste Engineering and Enforcement Division at 424-3313 or 424-3366 regarding information on proper disposal. The Department of Health Services also has jurisdiction over asbestos removal. I have faxed a copy of your letter to them and they will contact you separately. Either Ron Skomro or Bill Stapleton at DOHS should be contacted by the developer at 509-7367. Lastly, in our phone conversation with you this afternoon, you expressed,your concern over possible pesticide contamination. I discussed this issue with Brad Robinson or our Pesticides Division (ph. 424-3369)who felt that the levels of DDE and DDD (the breakdown products of DDT) set forth in the assessment report were very low. Since those levels were measured at the base of the drum in the storage area and thus represent a `hot spot' concentration, levels elsewhere would be lower. DDT's breakdown products of DDD and DDE can be found almost anywhere testing is done since they are so widely distributed in our environment, so their mere presence does not indicate a contamination problem. In the absence of either suspected criminal action of pesticide dumping or a demonstrated water quality problem, DEP does not become involved in pesticide testing at a site such as Collins Crossing. With the absence of detectable pesticide concentrations in the two well water samples and the very low levels found at the storage area `hot spot', there would be no reason to do additional testing in the neighborhood. Thank you again for your letter. If you have any further questions, please contact Frederick Riese of my Office of Environmental Review at 424-4110. Sincerely, lq(��W-<� Sidney J. Holbrook Commissioner cc: Robin Bray, DEP/WEED Doug-Zimmerman, DEP/PERD David McKeegan, DEP/WEED �JGeoffFolger, Town of South Windsor • � t STATE OF CONNECTICUT DEPARTME\T OF PUBLIC HEALTH Nf t4l. J'l\wl t September 6, 1996 5EP 9 1996 South Windsor John & Barbara Callahan INLAND WETLANDS AGENCY/ 1212 Sullivan Avenue CONSERVATION COMMISSION South Windsor,CT 06074 RE: Collins Crossing, L.L.C. Sullivan Avenue, South Windsor, CT Dear Mr. & Mrs. Callahan: This letter is to summarize the Connecticut Department of Public Health's (Department) regulations concerns about demolition of buildings and asbestos abatement. This letter was initiated by a letter you sent to the Connecticut Department of Environmental Protection's (CTDEP) Commissioner, dated August 30, 1996; regarding questions concerning various buildings at the above referenced site. In my conversations with Mr. Geoff Folger, South Windsor Environmental Officer, 1 learned the "barn" is presently being used as an antique store. Thus this structure's future demolition would fall under the regulations of the U.S. Environmental Protection Agency. These regulations are the asbestos National Emissions Standards for Hazardous Air Pollutants (NESHAP, 40 CFR Part 61 ) and the Model Accreditation Plan (MAP, 40 CFR Part 763). In addition, the demolition of the structure(s) falls under the Connecticut General Statutes and the Regulations of Connecticut State Agencies. As is required under both the Department's and CTDEP's regulations, all ACM must be removed prior to demolition. This removal also includes Category I and Category II non-friable ACM. is informationprovided to you: The following A copy of the U.S. EPA's Asbestos NESHAP (National Emission Standards for Hazardous Air Pollutants), 40 CFR Part 61 . A copy of the differences between the Department's regulations and the asbestos NESHAP regulations. The asbestos NESHAP regulations for demolition apply if the building to be demolished, meets the NESHAP definition for "facility", which is any institutional, commercial, public, industrial or residential structure, installation or building (including any structure, installation or building (860)509-7367 j)l1ll r; r..)•'1i CC' iU! 1/. �1. r� / ft) L1 I i',_ 7 'r61 }n Lyual (Jppol(unrn Page 2 - Mr. & Mrs. Callahan September 6, 1996 containing condominiums, or individual dwelling units operated as a residential cooperative, but excluding residential buildings having four (4) or fewer dwelling units);... * If the building that is to be demolished meets the above definition for facility, an inspection by a Connecticut licensed asbestos inspector is required to determine if asbestos is present prior to demolition. * Since asbestos containing material (ACM) must be analyzed by a laboratory, the inspector is required to take bulk samples. A visual survey or "NESHAPS" style inspection that determines ACM via a visual inspection is invalid. Such persons, not licensed by this Department will be cited for non-compliance. * If asbestos-containing material (ACM) is present in the building to be demolished, it must be abated by a Connecticut licensed asbestos contractor prior to demolition complying with all federal and state regulations. * Buildings to be demolished that do not meet the NESHAP definition for facility should be inspected for ACM by a Connecticut licensed asbestos inspector prior to demolition. If the inspection was not conducted and ACM was in fact present and the demolition occurred without having the ACM abated, the building owner and the demolition contractor would be in violation of the regulations of Connecticut State Agencies. Any person who knowingly violates any provisions of the Connecticut General Statutes Sections 19a-332 to 19a-332c, inclusive, or Sections 20-435 to Section 439 inclusive, shall be fined not more than five thousand dollars or imprisoned for not more than one year or both. * If a building is to be demolished under the order of a state or local government agency, issued because the building is structurally unsound and in danger of imminent collapse, demolition may occur without prior removal of ACM if the Department has approved an application for alternative work practices (AWP) prior to demolition. The AWP approval is based upon a determination that the AWP provides an equivalent or greater measure of asbestos emission control when compared to state regulatory control requirements. The demolition contractor in these instances would have to licensed as an asbestos contractor by this Department. All demolition debris would be treated as asbestos ^taste, handled, transported, and disposed as s.!ch. N Page 3 Mr. & Mrs. Callahan September 6, 1996 In an effort to ensure that buildings to be demolished are free of all ACM, this Department recommends that prior to the issuance of a demolition permit by the local building inspector's office, that proof be provided, in the form of a licensed asbestos inspector's report, indicating that the building does not contain asbestos. If ACM is present in a building, this Department can assist the building owner with proper procedures for abating the ACM prior to demolition. After the building has been abated by a licensed asbestos contractor and proof is presented to the inspector's office, the demolition permit can be issued. If a building is determined to not contain asbestos, the demolition contractor does not require a license as an asbestos abatement contractor. I trust this information will be useful to the you. If you have any questions do not hesitate to contact the Indoor Air Program at (860) 509-7367. Sincere) William M. Stapleton, Jr. Environmental Sanitarian II Indoor Air Program Division of Environmental Health c: Z11-Ar. Geoff Folger, South Windsor Environmental Officer Mr. Fred Riese, CT DEP, Office of Environmental Review Mr. Harolu Cummings, Esq. Collins Crossing, L.L.C. attachments a2:\callahn 1 STATE OF CONNECTICUT . DEPARTIIIENT OF PUBLIC HEALTH D «� ,,,..• .....,�,: SEP w 1996 , CC:U+h Windsor September 11, 1996 INLAND bVETLAIVDS AGi:c ; CONSERVATION C0 M14j"_' CERTIFIED MAIL RETURN RECEIPT REQUESTED Article No Z 237 811 897 Mr. Harold Cummings, Esq. Collins Crossing, L.L.C. 1610 Ellington Road P.O. Box 667 South Windsor, CT 06074 RE: Col;ins Crossing,L.L.C., Sullivan Avenue, South Windsor, CT Dear Mr. Cummings: This letter is to summarize our telephone conversation on September 10, 1996 regarding the Department of Public Health's concerns about demolition of buildings and asbestos abatement. This conversation was initiated by the Department following a request from the Connecticut Department of Environmental Protection and conversations with the South Windsor Environmental Officer. Under separate cover is a copy of a letter detailing substantially the same requirements as this letter, sent to Mr. & Mrs. John Callahan. As we discussed, all ACM must be removed prior to demolition. This removal also includes Category 1 and Category II non-friable ACM. The designation of the barn at the site as having been used recently for commercial purposes, requires the structure to be fully inspected for asbestos-containing materials prior to demolition as required under the U.S. Environmental Protection Agency requirements. (See below). The following information is provided to you: * A ropy of the U.S. EPA's Asbestos NESHAP (National Emission Standards ft.- Hazardous Air Pollutants), 40 CFR Part 61. * The asbestos NESHAP regulations for demolition apply if the building to be demolished, meets the NESHAP definition for "...'facility', which is any institutional, commercial, public, industrial or residential structure, installation or building (including any structure, installation or building containing condominiums, or individual dwelling units operated as a residential cooperative, bur excluding residential buildings having four (4) or fewer dwelling units);..." * If the building that is to be demolished meets the above definition for facility, an inspection by a Connecticut licensed asbestos inspector is required to determine if asbestos is present prior to demolition. * Since asbestos containing material (ACM) must be analyzed by a laboratory, the inspector is required to take bulk samples. A visual survey or "NESHAPS" style inspection that determines ACM via a visual inspection is invalid. Such persons, not ';,;,: (860) 509-7367 l(f)/d. C1 /Il,._� Page 2 Collins Crossing, L.L.C. September 11, 1996 licensed by this Department will be cited for non-compliance. * If asbestos-containing material (ACM) is present in the building to be demolished, it must be abated by a Connecticut licensed asbestos contractor prior to demolition complying with all federal and state regulations. * Buildings to be demolished that do not meet the NESHAP definition for facility should be inspected for ACM by a Connecticut licensed asbestos inspector prior to demolition. If the inspection was not conducted and ACM was in fact present and the demolition occurred without having the ACM abated, the building owner and the demolition contractor would be in violation of the regulations of Connecticut State Agencies. Any person who knowingly violates any provisions of the Connecticut General Statutes Sections 19a-332 to 19a-332c, inclusive, or Sections 20-435 to Section 439 inclusive, shall be fined not more than five thousand dollars or imprisoned for not more than one year or both. * If a building is to be demolished under the order of a state or local government agency, issued because the building is structurally unsound and in danger of imminent collapse, demolition may occur without prior removal of ACM if the Department has approved an application for alternative work practices (AWP) prior to demolition. The AWP approval is based upon a determination that the AWP provides an equivalent or greater measure of asbestos emission control when compared to state regulatory control requirements. The demolition contractor in these instances would have to licensed as an asbestos contractor by this Department. All demolition debris would be treated as asbestos waste, handled, transported, and disposed as such. In an effort to ensure that buildings to be demolished are free of all ACM, this Department recommends that prior to the issuance of a demolition permit by the local building inspector's office, that proof be provided, in the form of a licensed asbestos inspector's report, indicating that the building does not contain asbestos. If ACM is present in a building, this Department can assist the building owner with proper procedures for abating the ACM prior to demolition. After the building has been abated by a licensed asbestos contractor and proof is presented to the inspector's office, the demolition permit can be issued. If a building is determined to not contain asbestos, the demolition contractor does not require a license as an asbestos abatement contractor. I trust this information will be useful to you. 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