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Home My WebLink AboutSeptic New 919 Ellington Road i TOWN OF SOUTH WINDSOR HEALTH DEPARTMENT Application for permit to install a new/repair subsurface sewage disposal system. To the Health Department, Town of South Windsor. Fee Paid � Date /b / 4 Permit Number As a sub rface sewage disposal syste in alter licensed in the tate of Conn cticut, I o� aC 3 2 woL C 0-7 j Name, Address, Telephone Number, LAnpnsp Number hereby apply for a permit to construct/repair a subsurface sewage disposal system located at 9!9 6ccr"yzyi egyM andowned by Street, Address, Lot Number Name Address Information to be supplied by Applicant: Type of dwelling If non-residential, estimated daily flow Residential,Commercial,Etc. Number of bedrooms Size of lot Number of fixtures above basement Tubs,Sinks,Toilets,Etc. Number of fixtures in basement, if any , Pumped or gravity flow, Type of water supply If private,type of well Public-Private Information to be supplied by Health Department: Soil type at various levels Percolation rate Square feet of effective leaching area required Size of septic tank Type of system Trenches,Drywells,Etc. Number of dry wells, trenches, etc. Distance between individual leaching units. Distance from well on same property on adjoining property Curtain drain required Yes,No Height of system above ground water maximum ground water , ledge , impervious soil layer If automatic closing is required,description 1 A PLOT PLAN INDICATING LOCATION OF PROPOSED STRUCTURE, WATER SUPPLY, SEPTIC SYSTEM, EM- BANKMENTS, WATERCOURSES, PROPERTY LINES AND ALSO INDICATING EXISTING AND PROPOSED FINISHED GRADES MUST BE SUBMITTED BEFORE THIS PERMIT CAN BE ISSUED. THIS PERMIT IS NOT TRANSFERRABLE FROM PERSON TO PERSON OR FROM PLACE TO PLACE. NO PART OF THE SYSTEM SHALL BE BACKFILLED UNTIL IT HAS BEEN INSPECTED AND APPROVED BY THE SANITARIAN. SPECIFICATION AND REQUIREMENTS AS STATED IN THIS PERMIT MUST BE MET AND ANY CHANGES MUST BE APPROVED BY THE TOWN SANITARIAN BEFORE FINAL APPROVAL WILL BE GIVEN. THIS PERMIT SHALL NOT BE CONSTRUED AS PERMISSION TO CREATE A NUISANCE CONDITION NOR IS THIS SYSTEM GUARANTEED BY THE HEALTH DEPARTMENT. Permit Received by 44p� SUS ate Si na ure of Appli ant&License Number For Office Use Only c1 Permit issued by Date System installed by Final Inspection AppUal Date DESIGN PROFESSIONALS, INC. civil engineers •planners • surveyors • gis April 9, 2003 Town of South Windsor 1540 Sullivan Ave. South Windsor, Ct 06074 Attn:Mr. Bob Deptula Town Sanitarian Re:Unity Church(Formerly River Valley Baptist Church site) Dear Bob We have resubmitted the change order plans for the above referenced site. As part of the revised change order plans,we have included a design plan for the septic system. The projected flows for the septic system were determined from information provided to us by the architect. The projected flows are as follows: 1. Sanctuary Seating total=288 (222 main level, 21 for choir, and 45 in balcony on second level) Flow of 1 gpd.(gallon per day)per seat=288 gallons. "' 2. Fellowship hall capacity of 115 @ 5gpd per person.=575 gallons. 3. Office assume 4 people @ 20 gpd. =80 gallons. 4. Sunday school 72 occupancy @ 2 gpd. = 144 gallons.✓ The peak flow will occur on a Sunday,with very little activity during the remainder of the week. In order to determine a design flow for the facility,we looked at a very busy three day period of Friday through Sunday. Assuming that the fellowship hall would be used both days,we calculated the following flows: Event Friday Saturday Sunday Sanctuary - - 288 gals. Fellowship Hall 575 gals. 575 gals. 575 gals. Office 80 gals. 80 gals. 80 gals. Sunday School - - 144 gals. Total 655 gals. 655 gals. 1,087 gals. Average over 3 days=799 gallons. el R. Jc« ; 'i The 64' of 4x4 infiltraters-will have a volume capacity of 7,659 Gallons. Therefore,the infiltrators will be able to handle holding the higher Sunday flow and distribute over the longer period. During the remainder of the week,the flows are expected to be very low with essentially only the office in operation. We have sized the septic tank and grease trap at 1250 gallons to cover the largest single day. We are not aware of the intent to operate a day care facility of any type at the site. With the size of the system, and the averaging out of flows over a week time period, a small facility of 30 or so kids should not make any difference in the septic design. A larger all day facility may have an impact, and the projected flows would need to be checked prior to allowing the facility to operate. Please review the enclosed, and call with any questions or comments, or if you need additional information. Sincerely, Galen Semprebon, P.E. CC: Marcia Banach,Director of Planning Jeff Doolittle, Town Engineer 165 South Satellite Road, South Windsor, Connecticut 06074 Tel: (860) 291-8755 . Fax: (860) 291-8757 • t Q7j� • • r • !I �j V •. `` :,, . 1t'+\tit. i I., Addendum #1 Stormwater Management Plan Unity Church South Windsor, Connecticut Prepared by: Design Professionals,Inc. 165 South Satellite Road South Windsor, CT 06074 DPI Project No. 1452 April 8,2003 Maintenance and Operation: The following maintenance operations will be required to ensure the proper and efficient operation of the Storm Water System, and Detention/Water Quality Basin. The following maintenance schedule is intended to be a minimum guide, and additional inspections and maintenance measures may be required following large storm events that could cause the deposition of excess debris in the system. Catch Basins: The catch Basins shall be inspected annually. The sumps shall be cleaned when the depth of material within the sumps reaches 1'. Basin Spillway: The stone overflow trench shall be inspected twice yearly. All large woody growth that may affect the flow of water or the stability of the trench shall be removed. The spillway shall also be inspected after any flow passes through it. The stone shall be re-arranged and added to as required to maintain the design as per the design plans. Pavement: The pavement surfaces shall be swept a minimum of once per year, shortly after the end of the snow season. Introduction: The site was originally designed with a series of catch basins draining to drywells (See Storm Water Management Report dated 4/14/98 prepared for River Valley Baptist Church). We recently proposed to replace this design with a surface detention basin that would discharge through a level spreader at a peak rate less than existing. Due to concerns with proposing a level spreader, and discharge location in close proximity to the Lakewood Condominiums, we have revised the basic drainage design concept. Original Design: The original design consisted of a total of 20 circular drywell structures. The structures were designed at 6' depth, 8' diameter,with 2' of stone around each structure. The drywells provided the majority of the storage volume and the infiltration. The total volume of storage of the 20 drywells would be 7,330 C.F. There was an additional 3,400 C.F. +-of surface storage volume in the area adjacent to the parking in the southwest corner of the site. Therefore,the total storage for surface runoff on the site would be 10,730 C.F. The drywells provided a surface area for infiltration (surface area of outside face of stone on drywells) of 4,524 S.F.total. Revised Drainage Design Concept: The proposed drainage design will consist of providing the same infiltration area as the original design, (4,524 S.F.)using infiltration trenches in place of the drywells. The volume originally provided(10,730 C.F.)will be provided by surface basins in place of the drywell structures. The infiltration area will be provided by infiltration trenches consisting of 3' wide, 5' deep trenches with a 6"perforated pipe within each trench. Assuming infiltration will occur from each side of the trench, and not using the bottom area for infiltration, we will have 10 S.F. per linear foot of trench for infiltration. We need to provide a minimum of 4,524 S.F. of infiltration. Therefore, we will need to provide a minimum of 452.4 L.F. of trench for infiltration. Assuming a porosity of 0.3 for the stone,the infiltration trench will have a volume capacity of 5 C.F. per linear foot of trench. (pipe capacity plus surrounding stone). 452.4 Linear feet of trench would have a capacity of 2,262 C.F. Therefore, a minimum of 8,468 C.F. (10,730 C.F. 2,262 C.F. = 8,468 C.F.)would be required on the surface. Based on the proposed design,we are proposing approximately 35,000 C.F. of surface storage on the site. This is over 3 times the amount of stormwater storage on site originally proposed. Conclusions: The proposed design is more conservative than the original design in that it provides subsurface infiltration as per the original design, and provides over 3 times the stormwater storage capacity of the original design. During non frozen conditions, there will be a significant amount of surface infiltration from the basins. 05/11 i 1999 10:29 9602919757 DPI PAGE: 01 signCPr'of essionales inc. a I! Civil EnGineery - Plenreers Surveyore CIS LETTER OF TRANSMITTAL TO: Rob eptula DATE: May 11, 1998 Towr3�aniterian Town of South Windsor REGARDING: Percolation Test Results wrim� PROJ. NO.: 1048 Rivet Valley Baptist Church 010 Ellington Road WE ARE SENDING YOU: . 0 for your use ® at your request (� for approval for your files for review and comment U1 other THE FOLLOWING: The fulluwi►scL J:r a d�a the ems cr�l'dtiurA lest wr[4e result fur tPre pwpused site fur River Valley Baptist Ohurcn, located at 919 Ellington Read, as recorded on March 25, 1998. Design Prof scion s, InQ. RECIPIENT: By. FAX##: (860) 644-3781 Ka on M. Ishe cod PHONE: (860) 6442511 (X-248) Project Enginccr 165 South Satellite Road, South Windsor, CT 06074. (850) 291-8755 Fax : (850) 291-6767 a Email:dpicivllaQaoI,corrl 05/11/1998 10:29 8602918757 DPI RAGE 02 �✓ 1045 • GEvo et)gineer5 • planners esign tza r 64 -a7ss yAr� 99 rofessianais, in . ►/ 491 tucklsnd road. south windsor, Gt 06074 -- --�-r-- s Z • +�f3 5�.��A 7�s c�•�•� .�/T �lo. Car' �/�. _.�.�._.._ _ e,+�.PrH T4 ,Alta Ir[r..rCp �� Y.Wwr�r�AY/wrwrr�r�wl�r��ll — — �rrnr�i�nrAinrrrr� 3,4 rr PRar-SOAK 5 &,ftLotiS M ,. d' AZ7/A/a rlAf4 R : 41S 1r, 25 55 l0 .,o �d. 05111r'1998 10:29 6602918757 DPI PAGE 03 oil A10. 046 d eCivil engineers • planners ,�" ' .T. .v`AhfE= 1{A��V �'W h1esigQ (203) 644-4795 rofessi "3nals, inn. OAne /2,5LgEi 491 bucklond rold, Soulh wind%or. Ct 06074 Res#L--M 04F7-oz W L—tT f=,u V Tf t A64 Z7MIG 7`i.Afo 22. 0 _ 10� a� 1415 ru - Zcz - -- —- tj 1 S a R� + yt -. V ti N _ � t' e e W _