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8279_SITE PLAN- SILVER STREET ASSOC. - SILVER ST. #Tsa �9 Side lwn S � \ v2r `7+reed /35scc;�,�e5 0 0 TOWN OF AGAWAM 0 INTEROFFICE - _ y MEMORANDUM D To: Planning Dept. CC: John Stone, DPW Supt. / File From: Engineering Date: Dec. 18, 2003 Subject: Site Plan 319 Silver St. Associates Engineering has not been able to review the submittal due to staffs bereavement leave this week. I apologize for any inconvenience this may cause the proposer. Agawam DPW Engineering reserves the right to make additional comments and requests for information upon review submissions. If you have any comments or questions, please do not hesitate to contact our division. Sincerely, AA AIIAA-� G nne J. H man, .E. ToyVn Enginee SASP1319101 review dec 18 03.wpd fit : Town of Agawam 36 Main Street Agawam, Massachusetts 01001-1837 Tel. 413-786-0400 Fax 413-786-9927 PLANNING BOARD December 26, 2003 Silver Street Associates 630 Silver Street Agawam, MA 01001 To Whom It May Concern: At its duly called meeting held on December 18, 2003, the Agawam Planning Board approved the site plan entitled ".New Building For: Silver Street Associates, 630 Silver Street, Agawam, MA", prepared by The O'Leary Company and dated 10-28-03, with the following conditions: -- the following landscape note must be placed on the plan: "All plantings must be maintained and that portion of the public way abutting the parcel and including the treebelt shall be maintained in a safe and attractive condition by the owner of the parcel." -- a plan subdividing the property (Form A) must be submitted; -- if any air conditioning/heating units are proposed to be placed on the roof, the plan must be submitted to the Planning Board for approval; -- all trees to be planted must be a minimum of 1.5" caliper; -- Agawam Fire Department comments (attached) must be addressed; and -- all Agawam Engineering Department comments must be addressed. -2- Please submit three revised plans to the Planning Board for signatures. If you have any questions, contact this office at 786-0400, extension 283. Sincerely, Dennis B. Hopkins, Chairman AGAWAM PLANNING BOARD DBH/DSD:pre cc: The O'Leary Co. Building Dept. Engineering Dept. Fire Dept. Town Clerk File i Fa AGAWAM FIREDEPART TENT v� 9 800 MAIN STREET • AGAWAM, MA 01001 Q N TELEPHONE (413) 786-0657 FAX(413) 786-1241 David A. Pisano Chief of Department Mp Stephen M. Martin Deputy Chief FIRES ATEO - 12/11/03 RE: SILVER ST. ASSOC..(Phase II) 630 SILVER ST. As per. 780 C.M.R. (Building Code) 521 C.M.R. (Architectural Access Code) and 148 M.G.L. and Not limited to N.F.P.A. 13 and 72 this addition shall be sprinkled, and alarmed. Please note that the hydrant must be located with in(100) ft. Of the fire department connection and all alarm wiring must be MC or in CONDUIT where it is not otherwise protected. Complete Narratives, Drawings, and Calculations, all with(PE) stamps shall be submitted along with a copy of the sprinkler installers license before work is to begin, Per Chap.9 of 780 C.M.R. Fire Imp. M.Mercadante U-a- aD � a.. a d C A caUj — w Q c� co a D tt 1{-�, 0 • AGAWAM OFFICE OF PLANNING & COMMUNITY DEVELOPMENT SITE PLAN REVIEW REVIEWER: D. Dachos DATE: December 18, 2003 DATE RECEIVED: December 11, 2003 DISTRIBUTION DATE: Dec. 11, 2003 PLANNING BOARD MEETING DATE: December 18, 2003 APPLICANT INFORMATION 1. Name of Business: Silver Street Associates Address: 630 Silver Street, Agawam, MA 01001 2. Owner: Same Address: Same Telephone: 789-3720 Fax: 786-2450 3. Engineer: Gerald P. Berson, The O'Leary Company, Inc. Address: 376 College Highway/ P.O. Box 377 Telephone: 527-1360 Fax: 527-2499 PLAN REVIEW Scale: 1" = 30' Date: November 28, 2003 Title Block (Street Address, Applicant's Name, Address, Scale, Name of Preparer of Plan): Address of the building must be placed on the plan. Description of Project: Proposed construction of a 25,200 sq. ft. single story multi- tenant light industrial/office facility. The Planning Board approved this site plan on September 17, 1998. At that time the proposed building was to be 16,000 sq. ft.. A Site Plan Review Page 2 copy of the approval letter is attached. Description of Site: Site is presently undeveloped. In 1998, the Conservation Commission made a determination that there were no wetlands on this property. Provision for Traffic Flow: There is a proposed curb cut on to Silver Street on the northern side of the site. The width of the proposed driveway should be shown. Parking: Fifty-seven parking places are shown, three of which are handicapped. Drainage: See Engineering comments. Public Utilities: See Engineering comments. Landscaping/Screening and Buffers: The following landscape note must be placed on the plan: "All plantings must be maintained and that portion of the public way abutting the parcel and including the treebelt shall be maintained in a safe and attractive condtion by the owner of the parcel." Sign Location: O.K. Exterior Lighting: Cut sheets of the proposed lighting should be submitted. Rendering or Elevations: Colors and textures should be provided. Dumpster Location: Proposed dumpster location must be shown. The dumpster must be fenced and screened. Other Comments or Concerns: A Form A subdividing the parcel must be recorded prior to the commencement of construction. Also, the Fire Departments comments must be addressed. �i F AG4 0 . TOWN OF AGA WAM 36 .'WAIN STREET AGAWA-I, NIASSACHUSETTS 01001 yr Tel. 413-7 86-0400 1 D�RATED Ma�� PLANNING BOARD cog rr C September 21, 1998 n-) ray �r Development Associates 630 Silver Street c Agawam, MA 01001 ' Dear Mr. Vincunas: At its duly called meeting held on September 17, 1998, the Agawam Planning Board voted to approve the site plan entitled "Proposed New Building, 604 Silver Street, Agawam, MA, owner: Development Associates", prepared by Associated Builders, Inc. and dated 8/28/98, revised 9/4/98, revised 9/14/98 with the following conditions: -- the water line and telephone services shall be bored under Silver Street if no stub connection is found; -- the words "from public ways"shall be removed from General Note#4; -- drainage is to be approved by the DPW; -- the applicant shall contact the Conservation Commission to determine if a filing is necessary; and -- three sets of revised plans shall be submitted to the Board for their signatures. If you have any questions, please contact this office at 786-0400, extension 245. Sincerely, _ Dennis B. Hopkins, Acting Chairman AGAWAM PLANNING BOARD cc: Associated Builders Building Inspector Engineering Department Town lerk Fil TOWN OF AGAw" MEMORANDUM • MA .. ••�sr r To: Planning Board CC: JTG, File, J.P. Stone, Supt. of Public Works From: Engineering Date: September 17, 1998 Subject: Development Associates - Silver Street- Site Plan - SP 319 - � ' Per your request dated September 11, 1998, we have reviewed the plan entitled . .. .���.-aProposed-New Building, 630 Silver Street Agawam, MA" Prepared by Associated 'Builders Inc. Dated 8/2 8 98 revised 9/4/9 8 and have the following comments: I. The site plan should show the street address of the new building as`' Silver Street. " 2. . 'The plan should show boring under Silver Street for the installation of ` �. the water and telephone services, as cutting the road will not be allowed. 3. The sewer lateral to the new building should be lowered to provide.' ;;�' - adequate cover over the pipe in the area of the proposed swale near �._ SMH #4. Also, a detail should be provided for a proposed inside drop y` t_= in SMH#4. �._ 4. The landscaping plan shows a future 8,000 sf addition instead of the = ~ 4,800 sf addition shown on the site plan. . - 5. We have not completed our drainage review. Depending on the results .of the analysis, additional changes may be required. If you have any comments or questions, please do not hesitate to contact our division. v truly you, James T. Daley, P.E., Town Engineer H:IENGINEERISMPIAN%5p319.wpd Town of Agawam 36 Main Street Agawam, Massachusetts 01001-1837 y Tel. 413-786-0400 Fax 413-786-9927 MEMO TO: Engineering Dept., Police Dept., Fire Lie p t- FROM: Planning Board SUBJECT: Site Plan - Silver Street Associates - Silver Street DATE: December 11, 2003 Please review and comment on the attached Site Plan for Silver Street Associates prior to the Board's December 18"meeting, if possible. Thank you. 0 DSD:pre Michael R. Mercadante Fire Inspector Agawam Fire De ar ment Date- 7 Q o vxi . off n N y D � q b .D rn Cr- h. 0 fA AGAWAM FIRE DEPARTMENT 800 MAIN STREET 0 AGAWAM, MA 01001 Q �fi�T TELEPHONE (413) 786-0657 .,c FAX (413) 786-1.241 David A. Pisano Chief of Department FIRES Mpy Stephen M. Martin Deputy Chief 12/11/03 RE: SILVER ST. ASSOC..(Phase II) 630 SILVER ST. As per. 780 C.M.R. (Building Code) 521 C.M.R. (Architectural Access Code) and 148 M.G.L. and Not limited to N.F.P.A. 13 and 72 this addition shall be sprinkled, and alarmed. Please note that the hydrant must be located with in (100) ft. Of the fire department connection and all alarm wiring must be MC or in CONDUIT where it is not otherwise protected. Complete Narratives, Drawings, and Calculations, all with(PE) stamps shall be submitted along with a copy of the sprinkler installers license before work is to begin, Per Chap.9 of 780 C.M.R. Fire Insp. M.Mercadante i r.. C„ Cn s-7 v r n A > C A {V C7 � o -n D A co m F p � r 0 0. A AWAM FIRE DEPARTMENT 800 MAIN STREET * AGAWAM, MA 01001 TELEPHONE (413) 786-0657 FAX (413) 786-1241 Davit! A. Pisano Chief of Department Stephen M. Martin Deputy Chief flRES 12111/03 w RE: SILVER ST. ASSOC..(Phase II) 630 SILVER ST. As per. 780 C.M.R. (Building Code) 521 C.M.R. (Architectural Access Code) and 148 M.G.L. and Not limited to N.F.P.A. 13 and 72 this addition shall be sprinkled, and alarmed. Please note that the hydrant must be located with in(100) ft. Of the fire department connection and all alarm wiring must be MC or in CONDUIT where it is not otherwise protected. Complete Narratives, Drawings, and Calculations, all with (PE) stamps shall be submitted along with a copy of the sprinkler installers license before work is to begin, Per Chap.9 of 780 C.M.R. Fire Insp. M.Mercadante cn a � a. ob d � 4 o � G N Q t� cn fix c- ow" �`� JOB LOCATION G330 SILVER ST. • r %1" OF Mqs g GERALD P. �yG Michael R. Mercadante C> BERSON Fire Inspector STRUCTURAL y No. 32387 Agawam Fire D g ar meet 10 Date; ' 03 L See AU kj4je INEERING MIN I N G V � DE STRUCTION E 1955 BUTLER BUILDER a 0 1 Memo To: Planning Board t, From: Sgt. Donald Gallerani S DEC 1 6 2093 Subject: Site Plan - Silver Street Associates - 630 Silver S4U'1 �.'N j111 Date: December 16, 2003 w , Roadway: Silver Street is a paved roadway that travels east and west. It is a moderately traveled road that has residential, commuter, and commercial traffic. The roadway in front of 630 Silver Street is approximately 30 Meet in total width. The cast bound travel lane is approximately 11 %z feet wide and the west bound travel lane is approximately 11 Meet wide. There is a breakdown lane on both sides of the roadway that is approximately 4 feet wide. This are of Silver Street is a 40 mph zone with NO PASSING allowed for east bound traffic and PASSING allowed for the west bound traffic. There are also NO PARKING signs for the roadway. Visibility: Visibility is good in both directions (east and west) for ingress and egress. Lighting: There is a WMECO pole #24313/60 across the street from the proposed construction and there is lighting from the other businesses in the area. Traffic Controls:None present. Sidewalks: There is a sidewalk present on the south side (opposite side) of the street. There is no sidewalk on the north side (construction side) of the street. School Zones: None located in the immediate area. Playgrounds: None located in the immediate area. Parking: The site plan appears to have adequate parking facilities. The plan must comply with the Town Ordinance regarding Handicapped Parking. Traffic Impact Estimates: None provided. Other: This building is being constructed in the Industrial Park area. At this time, there are no safety issues regarding pedestrian or traffic safety. • 0 Town of Agawam 36 Main Street Agawam, Massachusetts 01001-1837 Tel. 413-786-0400 Fax 413-786-9927 MEMO TO: Engineering Dept., Police Dept., Fire Dept. FROM: Planning Board SUBJECT: Site Plan - Silver Street Associates - Silver Street DATE: December 11, 2003 Please review and comment on the attached Site Plan for Silver Street Associates prior to the Board's December 18`" meeting, if possible. Thank you. DSD:pre AGAWAM PLANNING BOARD Form D Application for Site Plan Approval PIease complete the following form and return it and 10 copies of the Site Plan to: Agawam Building Department 36 Main Street Agawam, MA 0 100 1 1. Name of Business Silver Street Associates (Phase II) Address 630 Silver Street, Agawam, MA 01001 Telephone 413-789-3720 Fax 413-786-2450 2. Name of Applicant/Owner Silver Street Associates Address 630 Silver Street, Agawam, MA 01001 Telephone 413-789-3720 Fax 413-786-2450 3. Name of Engineer/Architect Gerald P. Berson The O'Leary Company, Inc. Address 376 College Highway/P. 0. Box 377 Southampton, Telephone 413-527-1360 Fax 413-527-2499 4. Please give a brief description of the proposed project: Construction of a 25,200 square foot single-story multi-tenant light industrial/office facility. _ VW 1WVtAV9V DEC 2ocs vi /14103 � � Revised 8 'Sld3ddd d0 08/*Ad3S dSu! Stormwater Management Standards . ..741" 1 , Stormwater Management Form This form is intended to ensure that proposed stormwater control designs meeI-the-storm water mand-remenl— ` standards described in the Department of Environmental Protection's Stormwater Management Policy(November 1996 with minor revisions March 1997). The Department of Environmental Protection(DEP)recommends that applicants submit this form with the Notice of Intent, as well as supporting documentation andplans, to provide stormwater information for conservadon•eommission review. If a particular storm waier.management standard cannot be met, information should be provided to-demonstrate how adequate water quality and water quantity protection will be provided by the project. DEP encourages engineers to use this form to certify that the project meets the stormwater management standards as well as acceptable engineering standards. This form should be completed by checking the appropriate boxes for each standard and by signing and stamping the back of this form. Project Location: 6312 r5► L VC, , A 4 A uM M 4__ M/t, ,^ It The proposed project is/ na circle one)exempt from one or more of the stormwater management standards. w If project is exempt,explain why: ' © rn r C Stormwater runoff volumes to be treated for waterquality are based on the following calculations: ' (check one that applies) 3 v ❑ 1 inch ofrunoff x total impervious area of post-development site for critical areas(e.g.,Outsta$din- -0 rn Resource Waters and shellfish growing areas) ^o 0 CD 0.5 inches of runoff x total impervious area of post-development site for other resource areas Standard#l:Untreated stormwater (See plan____) a The project is designed so that new stormwater conveyances(outfalls/discharges)do not discharge untreated stormwater into.or cause erosion to,wetlands or waters. Standard#2:Post-development peak discharge rates (See plan) ® Post-development peak discharge rates do not exceed pre-development rates on the site either at the point of discharge or downgradient property boundary. ❑N/A:project site contains waters subject to tidal action,so standard is not applicable. ❑ Stormwater controls have been designed for the 2-year and 10-year,24-hour storms. ® The project's stormwater design will not increase flooding impacts offsite from the 100-year,24-hourstorm. - Standard 0:Recharge to groundwater (See plan_) N The annual groundwater recharge for the post-development site approximates annual recharge from existing site conditions. E Soil types have been identified according to either the U.S.Natural Resources Conservation Service(NR,CWIN $) County Soils Survey or onsite soil evaluation.Calculations on stormwater flow are bast !otil i di a'ie group of�_ ,and total impervious area of T Sp (square feet). ; �'; — E Soil types at each planned point of stormwater runoff infiltration include: ;` t: MewaA M t A Infiltration Best M ana'l ge,,Snent Practices(BMPs)used for this project include: 2��3 tf''.�'rILT�CA�10�,,�`� 1J � TJI•li?7VLhf ,. - ;' Stand[ rq#4: ,�s' * S va1(Seeplan� `8,J 1: ' Th rot1 sed•twaswa r agement systems will remove 90%of the post-deveAcite's average PP annul[(oatdlo( ed Solids(TSS). *The BMV1 Oic 4774' BZ project include(list BM Ps with TSS removal rates): Ya . 1UF1gVA- t{oN WAS tu /TRk&cK (-75 -BO%J 1-10 Stormwater Management(Volume One) DRAINAGE REVIEW C The proposed project is a new facility located at 630 Silver Street in Agawam, NFpsac huselts. w The total area of the parcel is 2.609 acres (113,648+/- square feet) as shown on d awiu I. n Soil survey maps of the area indicate that MeA Merrimac Soils (Hydrologic Sofi>Gr t* A4 will be encountered. "' A a �- Recent test holes revealed a perc rate of 4" per minute. Proposed development will include 25,200 square feet of roof area and 49,000 square feet of paved surfaces. A municipal storm drainage swale is located in an easement along the west property line as shown on drawing L101. In addition, a municipal catch basin is available at the southeast comer in Silver Street. The municipal storm drainage system is capable of accepting storm runoff for a maximum of 25%impervious area. Based on the municipal drainage map, this translates to peak allowable discharge for the 100 year, 24 hour storms of 2.91 cfs to the swale and 1.25 cfs to the catch basin. The facility consists of two drainage areas. Area A-1 consists of the roof, parking, and front lawn areas. This area drains into a detention basin with a piped outlet to the catch basin in Silver Street. Area A-2 consists of the truck dock and remaining lawn areas. This area drains into a detention basin with a piped outlet to the municipal swale at the west boundary. Best management practices to control peak discharge rates and to provide for recharge and suspended solids removal will be provided. Area A-1 will drain to a new detention basin along the east property line. The peak allowable discharge rate from this basin to the municipal drainage system should not exceed 1.25 cfs. A leaching basin will provide recharge of 0.08 cfs. The proposed development will result in a peak runoff into the basin of 6.32 cfs for the 100 year, 24 hour storm. As a result, 10,019 cf of detention is required. The total capacity of the detention basin No. 1 will be 11,719 cf. The lower 1,600 cf will be used to contain recharge water and detain runoff for extended periods of time to facilitate settlement -2- of suspended solids. The upper 10,119 cf of storage will be used for detention of the 100 year, 24 hour storm. An additional 2,781 cf of storage is provided before detained storm water will flow over the containment berm. - The resulting peak discharge into the municipal drainage system will be 1.25 cfs. Area A-2 will drain to a new detention basin along the west property line. The peak allowable discharge rate from this basin into the municipal drainage system should not exceed 2.91 cfs. An infiltration trench will provide recharge of 0.30 cfs. The proposed development will result in peak runoff into the basin of 4.98 cfs for the 100 year, 24 hour storm. As a result, the required detention is 3,920 cf. In addition, 1,114 cf will be provided for recharge and extended detention. A total of 5,288 cf will be provided. The resulting peak discharge into the municipal drainage system will be 2.91 cfs. Since the municipal storm drainage system was designed to accommodate runoff from a 100 year, 24 hour storm,review of smaller 2 and 10 year storms isn't necessary. GERAW P. o BERSON cs STRUCTURAL v~i No. 32387 R 0!V 5E c„ > W m cam) C r � > 3 CD 3 n A M rU a O r Worksheet 2: Runoff curve number and runoff Project ti 6 ST A b.SOC, By Date Location 51 LVGX ST Checked Date Circle one: Present Developed CUE;4 /`+ ` Al.-Lo wA F3LE TO 51 LV t`v ST. � , 713 1 . Runoff curve number (CN) Soil name Cover description 1/ Area Product and CV — of hydrologic (cover type, treatment, and �v CN x area group hydrologic condition; r:i `i i ❑acres percent impervious; a) N ❑mi2 unconnected/connected impervious p ❑Y. (appendix A) area ratio) M '14 "' E- a.. t» 0 A Innp�t'zvcous o. 186 / 8,2Za t- ri Vtav s -75 10,5 57 2-1 , 723 o M ry mm Y Use only one Cy source per line. Totals - 0,7q C3 `�'G� 6 total roduct gggs( 4 CN (weighted) tota larea � �i Z,- 53i1"7 Use CN - L�J 2. Runoff Storm e1 Storm #2 Storm 03 Frequency . . .. . . . . .. . . . . . . . . .. . . . . . . . . . . yr ZI 1 O 100 Rainfall , P (24-hour) . . . . . . . . . . . . . . . . . . in 3. 0 4 ,5 6. Runoff , Q . . .. . . . . . . . . . . . .. . . . .. . . . . . . . . in (Use P and CN with table 2-I , fig. 2-1 . or eqs. 2-3 and 2-4. ) Worksheet 3: Time of concentration (Tc) or travel time (Tt) Project 5; L-v,�x 5y- A-.,..Z oc By Date 1 0 3. � Location (:�, 3o 5 tt.yi3YL S7— Checked Date Circle 'one: Present eveloped AaEA A —1f Ac-t-pu/AQtoS Circle one: G Tt through subarea NOTES: Space for as many as two segments per flow type can be used for each Worksheet. Include a map. schematic, or description of flow segments. Sheet flow (Applicable to Tc only) Segment ID C= - cs � 1. Surface description (table 3-1) ... ...... . . . rn 2. Kanning's roughness coeff., n (table 3-1) 3. Flow length, L (total L C 300 ft) ...... . . . . ft p 4. Two-yr 24-hr rainfall, P2 in b -o rn O,a2� 5. Land slope. s ......................... .... . ft/ft IV n r- 6. T . 0.007 (nL)0.8 Compute T ... . .. hr �.0 Z + �•Q Z t P 0.5 s0.4 t 2 Shallow concentrated flow Segment ID 3 7. Surface description (paved or unpaved) ..... %J lfpww 8. Flow length, L ............... .............. ft 16 a 9. Watercourse slope, a ......... ........... ... ft/ft .005 10. Average velocity, V (figure 3-1) fUs I' 15 ll. Tt - 3600 Y Compute Tt ...... hr 0,0 Z + Channel flow Segment ID 12. Cross sectional flow area, a ............... ft2 13. Wetted perimeter, pw ... ...... ....... .. ..... ft ` 14. Hydraulic radius, r - e Compute r .... ... ft p w _ No i40f0 15. Channel slope, s ....... ...... .............. ft/ft 16. Manning's roughness coeff ., n ......... ..... r 1 .49 r2/3 91/2 Ill. V - Compute V .... . .. ft/s n x . 18. Flow length, L ..... . . .. . .. .. . ......... . . ... ft �a 19. Tt - 3600 Y Compute Tt . . . . .. hr 01031 + 20. Watershed or subarea Tc or Tt (add Tt in steps 6, 11 , and 19) .. . . . . . hr D, O '1 (210-VI-TR-55. F)QCnnri Fai .i„na 1QaA% 0 0 Worksheet 4: Graphical Peak Discharge method Project Lv�`1L SY ' `�SOC- 8Y Date Location �30 5( tvt3`2 ='k Checked Date Circle one : Present Developed A A - 1 ALLowAGLE 1 . Data: o ro Drainage area . . . . . . . . . . A 0,0412 mil (acres/boo) Finm > c-) c Runoff curve number CN - {From worksheet 2} t.a ou c� Time of concentration . . Tc - _ 4, �4 hr (From worksheet 3) Rainfall distribution type - ( I, IA, IL, LII} -o Pond and swamp areas spread throughout watershed . . . . . . - �' percent of Am ( acres or mil averred) Storm 41 Storm 02 Storm Oi 2. Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . yr 2- l j0 d 3. Rainfall, P (24-hour) in 1 3. o 415, ,5 4. Initial abstraction, I . . . . . . . . . . . . . . . . . In I '-7 o 4 1 , 70 t. -2 0� (Use CN with table 4-1 .) 5.• Compute Ia/P . . . . .. . . . . . . . .. . . . . . . . .. . . . . Or 56% 0 .-314 0,26 Z 6. Unit peak discharge, q1s . . . . . . . . . . . . . . . . .. csm/in d (Use Tc Hnd Ia/P with exhibit 4-ail ) 7. Runoff Q . . . . . . . . in (941 ,7 Q ,e 3 :1 (From worksheet 2). 8. Pond and swamp adjustment factor, Fp . . . . 1 (Use percent pond and swamp area with table 4-2. Factor is 1.0 for zero percent pond and swamp area.) 1). Peak discharge, qp . . . . . . . . . . . . . . . . . . . . . . cfs +�� 0, (inhere qp - quAmQFp) Worksbeet 2: Runoff curve number and runoff Project 1L.v t&IL S l A S.S 0 C-- . By Date 1 Z G Location 6 30 .51 L v1gy ST Checked Date Circle •one: Present A` IA 1 . Runoff curve number (CN) Soil name Cover description L Area Product and C� — of hydrologic (cover type, treatment, and �� CN x area group hydrologic condition; r4 I c nacres percent impervious; m `~ N ❑mil unconnected/connected impervious p to ❑Y. (appendix A) area ratio) m -4 E-F LL. C� A b 0 ,57q S�, 7� �,� v ► 'ti�, 916 t45 0 41, E oa LAWtiS J �4� Mb , q86 .12 x N .ri ro m tV � O N 1/ Use only one CN source per line. Totals - 1a503 II9.3Z8 l product 119 3ZB CN (weighted) - total area �9.3q Use CN - tota 79'� 2. Runoff Storm 01 Storm a2 Storm 03 Frequency . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . yr 7 ! 0 0 O Rainfall , P (24-hour) . . . . . . . . . . . . . . . . . . in 3, 0 S, `f 6 , Runoff , Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . in 1r 2,376 4 AIS (Use P and CN with table 2-I , fig. 2-1 , or eqs. 2-3 and 2-4.) travelWorkshe3 entratlon (Tc) otime (Tt) Project J f LAB ST- `s'SvC. By Date f 03 Location i�= 3 o �Lt.y 45;Y� Sr _ Checked Date Circle one: Present Developed A l'f-t� A - ] A Circle one: Tc Tt through subarea MOTES: Space for as many as two segments per flow type can be used for each worksheet. Include a map, schematic, or description of flow segments. Sheet flow (Applicable to Tc only) Segment ID 1. Surface description (table 3-1) ... ..... .. . . 2. Kanning's roughness coeff., n (table 3-1) .. 3. Flow length, L (total L < 300 ft) ....... . . . ft 4. Two-yr 24-hr rainfall, P2 .... ........... . .. in S. Land slope, s ft/ft 0.007 (n 0.8 6. ?t � 0.SU)4 Compute Tt ... ... hr + ,CJ P2 s Shallow concentrated flow Segment ID 7. Surface description (paved or unpaved) ..... 8. Flow length, L ft 9. Watercourse slope, s ..... .... ........... . .. ft/ft 10. Average velocity, V (figure 3-1) ........... ft/s It. Tt - 3600 V Compute Tt .. .... hr + Channel flow Segment ID 12. Cross sectional flow area, a ............. .. ft2 13. Wetted perimeter, pw ft 14. Hydraulic radius, r - p8 Compute r .... .. . ft G-3 rn w is. Channel slope, s ... .... ...... .............. ft/ft o 16. Manning's roughness coeff., n ..... .... ... .. - '^ 213 1/2 17. V - 1 .49 rn ! Compute V .. . .. .. ft/s 37 r`? ran N q 18. Flow length, L .... . .. . . ..... . .. ....... .. . . . ft c�i► 14. Tt ]600 V Compute Tt , , , . ., hr + 20. Watershed or subarea Tc or Tt (add Tt in steps 6, 11 , and l9) . . . . . . . hr (). 10 5j Al l cJw-AP (210-VI•TR-55, Second Ed.. June 19861 Worksheet 4: Graphical Weak Discharge method Project _ 5 � L V �� ST sod BY Date t ! o Location �i L.v �{Y�- � _ Checked. Date Circle one: Present Qeveloped &gin ` 1 6 1 . Data: „r Q OQ23 2 Drainage area . . . . . . . . . . Am - ml (acres/640) cn Runoff curve number . . . . CN - Z y (From worksheet 2) > c"sI to { Time 'of concentration . . Tc - — 0, EQ_ _ hr (From worksheet 3) 3 w P . a PJ (I Rainfall distribution type - t IA II, III) ,..r Pond and swamp areas spread > 2 throughout watershed . . . .. . . percent of Am ( acres or mi Kpv�ed) O r- N Storm #1 Storm 2 Storm d3 2. Frequency . . . . yr Z C DG> 3. Rainfall, P (24-hour) . . . . in 4. Initial abstraction, Ia . . . . . . . . . . . . . . . . . in J 5 3 Z (Use CN with table 4-1. ) S. Compute I /P . . . . . . . . . .. . . . . . . 0 ,117 C II1b 0,06Z a 6. Unit peak discharge, q,-, . csm/in 615 60 665 (Use Tc and Ia/P with exhibit 4- BI ) in f Z. 3 7 . Runoff. Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . �� (From worksheet 2). r A. Pond and swamp adjustment factor, Fp . . , . (Use percent pond and swamp area %itth table 4-2. Factor is 1 .0 for zero percent pond and swamp area. ) ). . • • • • • cfs �. ea 3, 50 . 6, 3z Peak discharge, qp (there qp ' quAmQFp) 0 0 Worksheet 6a: Detention basin storage, peak outflow discharge (qo) known Project 15 t`L.v A s'S.v By Date Location 6 30 S1C Yt $f Checked Date Circle one: Present evelope �k1�_ A - } A I y. _I l� ' +14 l�tr i I I art - rn LU .. _ - rq3 r� AS �4c t17 I, 1600JO t {Ci cF . Detention as n etlorage VS • ,'� 1. Data: V .. . .... .... .. . .. Drainage area .. . .. .. Am - 6 ,002 mil 6. r q 0 Rainfall distribution (Use -- with figure 6-1) type (I, IA, II, IIl) - - I - 41 7. Runoff, Q . ... .. In 2.3 Ist 2nd (From worksheet 2) sta a sta e B. Runoff volume, 1 V .... ac-ft �,2 � 5 i 2. Frequency .... . . yr 0 (v JO r•-.QAm53.33) 3. Peak inflow dis- I. Storage volume, charge, qi ... . cfs 3. S� G'32- Vs .. .. . ... . . ac-ft 0,j 0,Z3 (From worksheet 4 or 5b) V 6qC f 1001 A. 1/� (VS - Vr(-s)) cf 4. Peak outflow dis� r charge, qo cfs () A-7 6.33 IQ. Maximum stage, Emaa (From plot) 5. Compute qo O ' '� ?\ZM OF k4j, . . .. 0 t 13 �E 9�y� qi GERALD P. G7 J NCL O,O$ C S o BERSO c.a STRUCTURAL �1 2nd stage qo includes Ist stage qo. of Rtj7GHAQX4e A No. 32387 • �S! AL Oin.vt.rrQ c:� c....__., • i a . w rn U5E Z,_ /ryklx)vre !Qn �3��«ti n rn z 1 M4tiVTjb o , 00 3 -Fp s , A P,M ........ -.g 5 F .. u5 � I� 6 ,00 1 IgZ,gk = 3. o°). z �� CUTLILM Worksheet 2: Runoff curve number and runoff Project S ( u v ST & So C , By Date rZ I 0 3 Location �, 7j D _ 21 L V tYt S j _ Checked Date Circle one: Present Developed A Qt7A A L ^ Li,o +� � To W W 5IuMLE 1. 066 A (-Qt5-',) 1 . Runoff curve number (CN) Soil name Cover description I� Area Product and Cy — of hydrologic (cover type, treatment, and CN x area group hydrologic condition; C'I I ❑acres percent impervious; h' ❑mi2 unconnected/connected impervious ❑ Y. (appendix A) area ratio) f0 'i `4 I-. Is. c: v A 046q 453 6 P--QVLov S ZS �a 31 139a ��� SGI M L7 � ?� C I c7 0 �.. o n m n Use only one CN source per line. Totals - �+ 86ro I01�. 3 Z total product 1110,31 Use CN - S CN (weighted) - - - 5-3.�7 total area 'I s.1G ; 2. Runoff Storm 01 Storm 42 Storm 93 Frequency . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . yr 7 �a low Rainfall, P (24-hour) .. . .. . .. . . . . . . . . . . in ✓'v �, s G ' !> Runoff, Q . . . . . .. .. . . . . . . . . . .. . . . . . . . . . . in d� f7 ai6 (Use P and CN with table 2-I , fig. 2-1 , or eqs. 2-3 and 2-4. ) • Worksheet 3: Time of concentration (Tc) or travel time (Tt) Project 5t, 1. V--dA ST /� s b 0 _C By Date Z- 1 0 3 Location 10 f L✓ 15 n T Checked Date Circle one: Present eveloped A e-t—A A A t-iOt.✓A� Circle one: Tc Tt through subarea NOTES: Space for as many as two segments per flow type can be used for each worksheet. Include a map, schematic, or description of flow segments. Sheet floes (Applicable to Tc only) Segment ID 1. Surface description (table 3-1) ........ .. . . PAkft'O 2. Manning's roughness coeff., n (table 3-1) . . 0,011 3. Flow length, L (total L ( .300 ft) ...... .. . . ft Q S 4. Two-yr 24-hr rainfall, P2 .... .......... .. .. in 3, 0 S. Land slope, s ................ .......... ... . ft/ft 0801 6. T - 0.007 (nL)0.8 Compute T ..... hr [13 + O 7j t P 0.5 s0.4 t 2 Shallow concentrated flow Segment ID Z 7. Surface description (paved or unpaved) V S. Flow length, L ft bO O..11 9. watercourse slope, a .................... .. . ft/ft 10. Average velocity, V (figure 3-1) ....... .. .. ft/ s r; 0 l 1. Tt 3600 Y Compute Tt .. .. . . hr + Channel flow Segment ID 12. Cross sectional flow area, a ........... .. .. ft2 13. Wetted perimeter, py ......... .......... . ... ft Q { 14. Hydraulic radius, r - p8 Compute r ... .... ft 1 o te w - 15. Channel slope, s ........ ..... ........... . . . ft/ft 3 -n 16. Manning's roughness coeff., n .. .. ... .. .. . .. p- -V 17. V 1 49 r s 2/3 1/2 N P, . n Compute V ... . . .. ft/s C7 cn 18. Flow length, L .......... .. ... ......... . . . . . ft 19. Tt ' 3600 V Compute Tt fir + 20., Watershed or subarea Tc or Tt (add Tt in steps 6, 11, and 19) .. . . . . . hr (210-VI-TR•55. Second Ed.. June 19RFJ Worksheet 4: Graphical Peak Discharge metliod Project C.� b 0 By Date Z I D 3 Location d Q 1l.✓ Checked Date Circle one: Present Developed a A t c c`u"-h 1 . Data: z Drainage area . . . . . . . . . . Am - rd 0 �j mil {acres/640) Runoff curve number . . . . CN - 15'-1 (From worksheet 2) > c� M ran Time of concentration . . Tc - -I b hr (From worksheet 3) Cn Rainfall distribution type - ( I, IA, II, III) w r� 3: o rn Pond and swamp areas spread 2 a Throughout watershed . . . .. . - percent of Am ( acres or * t,pvged) rn iV b O �: storm 01 Storm 02 11 storm 03 ' Yr 2— 2. Frequency .. . . . . . . . . . . . . . . . . . . .. . .. . . . . . . 3. Rainfall, P (24-hour) in �J.Z) 4. Z ' 4. Initial abstraction, I . . . . . . . . . . .. . . . . . in (Use CN With table 4-1.) 5.. Compute Ia/P . . . . d.�s6 Q,3�4 . . .. . . . . . . . . . 6. Unit peak discharge, q . . . . . . . . . . . . . . . . .. csm/in (Use Tc and Ia/P with exhibit 4- ) 7 . Runoff, Q . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . in bc[ (From worksheet 2). 8. Pond and swamp adjustment factor, Fp (Use percent pond and swamp area With tahle 4-2. Factor is 1 .0 for zero percent pond and swamp area. ) '7. Peak discharge, qp . . . . . . . . . . . . . . . . . . . . . . cfs (tlhere qp - quAmQFp) Worksheet 2: Runoff curve number and runoff Project S l Lrrt'"1C S 5.50 By pate ZUb Location 6 3 a l L,Y ST Checked Date Circle one: Present A Z 7� 1. Runoff curve number (CN) Soil name Cover description 1/ Area Product and CN — of hydrologic (cover type, treatment, and ,v CN x area group hydrologic condition; r� �1 �1 acres percent impervious; m N `v ❑mil unconnected/connected impervious a ors ❑ % (appendix A) area ratio) A f�nv � n: c, 9 s 0,7G 7 `�'S, 14. 6 M C � 1 rJo O C7 -n P. 3y -0 M 1/ Use only one CN source per line. Totals CN (weighted) . total eroduct Use CN total area /+��'� ; 2. Runoff Storm pl Storm 42 Storm 43 Frequency . . .. . . . . .. . . . . . . . . .. . .. . . . . . . . yr Z � D ADO Rainfall, P (24-hour) . . . . . . .. . . . . . . . . . . in Runoff, Q . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . in -61y Z. 5L4 4 .754Z (Use P and CN with table 2-I , fig. 2-I , or eqs. 2-3 and 2-4.) Worksheet 3: Time of concentration (Td or travel time (Tt) Project 51 L Vtn- Sr A SSo c, By Date 1 Location e 3 0 S 1 LV-tn Sr Checked Date Circle one: Present �ro'lgzh A aocA A ` Z A Circle one: Tc Tt area NOTES: Space for as many as two segments per flow type can be used for each worksheet. Include a map, schematic, or description of flow segments. Sheet flow (Applicable to Tc only) Segment ID 1. Surface description (table 3--1) .. ....... . . . cs :� 2. Manning's roughness coeff., n (table 3-1) A rn A C7 < 3. Plow length, L (total L < 300 ft) ...... . . . . ft 4. Two-yr 24-hr rainfall, P2 .................. in 3 3. Land slope, a ......... ....... .............. ft/ft > .13 6. Tt . 0.007 (W0.8 Compute Tt ... ... hr + P 0.5 0.4 2 s Shallow concentrated flow Segment ID 7. Surface description (paved or unpaved) 8. Flow length, L ............... .............. ft 9. watercourse slope, a .......... ............ . ft/ft 10. Average velocity, V (figure 3-1) ......... .. ft/s 1t. Tt ' 3600 V Compute Tt .. . . .. hr + 6ra� Channel flow Segment ID 12. Cross sectional flow area, a ........... .. .. ft2 13. wetted perimeter, pw ft 14. Hydraulic radius, r e Compute r .... ... ft p w 15. Channel slope, s ... .......... ............ . . ft/ft 16. Manning's roughness coeff., n .. ......... . .. 2/3 1/2 17. V - 1 .49 r s Compute V .. .. . .. ft/s n 18. Flow length, L .... . .. .. . .. . . . . . . . ...... .. .. ft 19. Tt - 3600 V Compute Tt . . .. .. hr 20. Watershed or subarea Tc or Tt (add Tt in steps 6, 11, and 19) .. .. .. . hr 0 A sty A t,LVWA t210-VI-TR.55- Second Rd. .limp toRR1 Worksheet 4: Graphical Peak Discharge method Project 7 S$I By Date 1 Z t o Location 630 51 Lv-h1R sT Checked Date Circle one: Present Developed v A q- -A A - Z A 1 . Data: z Drainage area Am T 6,OO�� mil (acres/640) c a W � Runoff curve number . . . . CN - _ (From worksheet 2) rn Time of concentration . . T 0.10 hr (From worksheet 3) A c-� C w W 4 Rainfall distribution type - �' ( I, IA, [I,. III} o Pond and swamp areas spread x > throughout watershed . . . . . . - — percent of Am ( acres orysiiZp4o fired) M rV A Storm #1 Storm d2 Storm d3 2. Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . yr Z lV j 0 0 3. Rainfall, P (24-hour) in 3.0 .4, S 6 4. Initial abstraction, I . . . . . . . . . . . . . . . . . in ,4 6 i q69 A 6 9 (Use CN with table 4-1. ) S. Compute Ia/P . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1,36 (5, 104 6, 07Z 6. Unit peak discharge, qu csm/Ln '636 (Use Tc and Ia/P with exhibit 4- TT� ) 7 . Runoff, Q . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . in 1. 3 2, 155 34 (From worksheet 2) . B. Pond and swamp adjustment factor, Fp (Use percent pond and swamp area with table 4-2. Factor is' l .0 for zero percent pond and swamp area. ) 1. Peak discharge, qp . . . . . . . . . . . . . . . . . . . . . . cfs Where qp . quAmQFp) s Worksheet 6a: Detention basin storage, peak outflow discharge (qo) known Project S I L V t`-n J7- 4 S 5 0 By Date Location 6- 30 SIL. J t5N1 51 Checked Date Circlq one: Present veloped A acn �r --� 4Yi �-•�'- iL am' �- L i_ �T-' 1 i` LL -1L _L - ,' _ TPL w1 a+ F _ 00 r+- t'1 6000 L: 71 _i L .,+ Tt tL Z.SOU i r , . w _ + 1 ' rn - r �f Iq 41 7 �� lit .Ov Sfl"wasV �, I I l y oE�x-na 0-1=r-µA"(. etention basin storage V 1. Data: 6. S ... .. . . . .. ... . .. + 31 ,2 3 Drainage area ... .. .. Am - � mil Vr 4 Rainfall distribution (Use ° with figure 6-1) type (I, lA, II, III) - � qi 7. Runoff. Q . . . . .. in 2,c 5 Ist 2nd (From Worksheet 2) stage kitage 8. Runoff volume, Z 3 3C{ Vr . . . . . ..... ac-ft r 2. Frequency ... . . . yr r 10 L100 I (Vr - QAm53.33) 3. Peak inflow dis- 1. Storage volumb, charge, qi .. .. cfs Z. �,Qg Vs . . . .. . .. . . ac-ft . 0'11 0,0`10 (From worksheet 4 or 5b) V 3106 3q 20 1/ (Vs - Vr(ys)) of , C 4�. 4. peak outflow dis� r charge, qo . . . . cfs � rZ� 3' Z� 10. Maximum stage, Emax Iq�J.33 I1S+0 �A( (From plot) 5. Compute o . C�3� .G55 �4`�.or 1NkfJ� d� a y qi {S � GfRALD P. ` i �'c t. 0,10 BERSON Q{ �♦1 Q. c�.a STRUCTURAL 1/ 2nd sage qo includes ls[ stage qo. Of No. 3 7 4 ' ors 1210-VI•TR-55. Second Ed.. .lunP IQQA► Ca-p ACA -A_ A Z Tr ,'�C,E.{ -YLsu-c Aa4,9- eATe 4 x z 5 -,o v 3 a. 3 o c-FS o A p ro - N A cn cn# JoB # soX # � DOCUMENT# TCl PAGE# J� i