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Home My WebLink AboutCorrespondence - 1476 SALEM STREET 5/29/2012 GRADY CONSULTING , L . L . C . ......».,.......imsacwio..............................—...............�,��..m.,,,�.�....,....,,oa,�,�...,.,�w..w.w......�....,..�.. ..,.,....�..,�..�..�......—....„,.,.�,,..ww_..........�m_w..� —,,,...—»....�..—...—.�..�...m..,�..,... .•nummm� oirvrmimumunmirvrvmmmmorvnrvmammm mmummm norrvnannnnnimnnnninnnniry msi Registered Professional Civil Engineers May 29, 2012 Susan Sawyer, REHS/RS "° Public Health DirectorkJrv ^� Health Department 1600 Osgood Street Building 20-Suite 2-36 North Andover, MA 01845 RE: #1476 State Street— Septic System Repair Applicant—Albert Koenig Dear Susan and Board Members: Enclosed please find three (3) sets of revised plans for the above referenced property. The plan was revised in response to a telephone call and letter from Susan Sawyer dated May 21, 2012. Plan revisions and our response to comments are as follows. 1. As we discussed it was our opinion that there are four (4) bedrooms in this home per the Title 5 definition of a bedroom. The Title 5 Inspection Report dated March 27, 2012 also notes that there are four(4) bedrooms on page 6 of the report. We have provided a floor plan sketch as discussed. 2. A scaled system profile of 1"=10' horizontal and 1"=1' vertical has been provided as requested. 3. The effluent loading rate has been changed to 0.53 gpd/sf as requested. As a result there is one additional chamber per row in the soil absorption system. 4. The location of the percolation test has been added to the plan as requested. 5. The"Greenhouse” is set on the ground with cinder blocks around the perimeter and a dirt floor. For design purposes we have treated this as a slab foundation and is located ten (10) feet from the leaching facility. A separation distance has been noted on the plan as requested. The floor of the Greenhouse is above the leaching chambers so the ten (10) foot separation is appropriate. 6. We have added a notation to TH 2 showing the point where the depth measurements were taken from. The reason the measurements were taken from this point is that this is the highest el-ration where mottling was observed. 7. A note has been added to the plan stating the building sewer is to be laid on a "compacted firm base" and as straight as possible as requested. 8. The slope of the building sewer has been revised from 0.019 to 0.020 as requested. 9. The plan has been revised to plan to depict the tees in the septic tank to be centered under the manholes as requested. 10. A note has been added to the plan stating the effluent tee filter is to be cleaned and maintained on an annual basis as requested. 71 Evergreen Street, Suite 1 * Kingston,MA 02364 * Tel (781) 585-2300 * Fax (781) 585-237$ 11. Buoyancy calculations have been provided as requested. These were initially omitted as the nearest test hole shows no water at elevation 98.75 and the bottom of the lowest tank is at approximately elevation 99.8. For the purposes of this calculation we assumed groundwater at elevation 101.7 per the test hole farthest from the tanks. 12. The note on the distribution box has been revised to indicate a riser within 9" of final grade as requested. 13. The profile has been revised to depict a 2" force main as requested. 14. The plan has been revised to depict a swale to direct surface waters around the dwelling as requested. If you have any questions please do not hesitate to contact us. Sincerely, GRADY CONSULTING, L.L.C. Richard Grad ,`P.E. Principal Engineer CC: Albert Koenig c/o Wind River Environmental 70 Batzak Drive Holliston, MA 01746 H AGC\2012\12-072\bohletter.doc BUOYANCY CALCULATION 1500 GALLON SEPTIC TANK Job No.: 12-072 Location: 1476 Salem Street, North Andover 1500 Gallon Monolithic Pump Chamber -See Attached Drawings Buoyant Force of Tank 10.21' X 6.125' X 0.8' X 62.4 #/cf = 3,122 # 1 Weight of Tank = 12,000 # Weight of Soil Over Anti-Flotation (74.5 in X 2 X 4.25 in) + (132 in X 2 X 4.75 in) = 1887.25 sq in 13.1 sf 13.1 sf X 6.1 ft X 85#/cf = 6792.35 # 1 Over Tank 10.21 X 6.125 X 1.5' X 85#/cf = 7973 # Weight of Tank+ Soil 12000#+7973#=" 19,973 # > Buoyant Force-ANTI-FLOTATION COLLAR NOT REQUIRED page 1 of 2 123-1/2' 116-10 r—�^ ------------ _—_--_--- 1 F I t Three 20112"Dis Cleanout Lids { I 1 1 84" 74112" 67-112" L ------ ----------------- t 1 1 i { t t I I 1 t 1 I A% Three 4"Dia.inlets T1vee 4"Dia.Outlets 108.0 4" 101.7 105.45 LIQUID LEVEL u 67" 54-112' 4$" 51-112" .r 'La _�.:;.E., 132° "CAFr!IFtt'd11t>a1C��`�Pt RA lu+iT't=.'Q� - [1) Concrete strength rc 4,000 PSI Q 28 days. Density 150 PCF [21 Cement,Portland Type I or IIJ. ASTM C150-81 (3) Admixtures,air&plastkAzars 0 ASTM 0233-82. [4J Reinforcing ASTM A615 for Wire fabric.Grade 60 bar. [5] Design loading H-10(see H2O Tanks). 16j Construction joints sealed with Butyl Rubber 1500 tuDtvO(1) page 2 of 2 Page 2 of 2 41 FM/5 Fu,j5/Fm/d 14 230 Sq* 14 6 7 24 Sqft 22 26 �1 I S-t 6 'B Roo ruxr F j 1 I a. t 4 E y { y t I t f i 3 f EE F+V I { 5/22/2012 DelleChiaie, Pamela From: DelleChiaie, Pamela Sent: Monday, June 18, 2012 11:37 AM To: 'rick @gradyconsulting.com' Cc: Sawyer, Susan Subject: Septic Plan Approval - 1476 Salem Street, North Andover Attachments: 20120618105530257.pdf Attached is the plan review approval for 1476 Salem Street,North Andover. The original was mailed to the homeowner. Pamela DelleChiaie Health Department 'Town of North Andover, 1600 Osgood Street I Bldg.20 1 Suite 2-36 North Andover,MA 01845 Phone 978.688.9540 Fax 978.688.8476 Email gl!�c, i to w.rnofnorth an_dover.corn Web www.TownoMorthAndover.ccom 1 / ^/ f f fe;�'`,o � ' /� �"� r North Andover Health Department Community Development Division June 15, 2012 Albert Koenig 1476 Salem Street North Andover, MA 01845 RE: Subsurface Sewage Disposal System Plan for 1476 Salem Street, North Andover, Massachusetts Map 106A lot 149 Dear Mr. Koenig, The North Andover Board of Health has completed the review of the septic system design plans, for the above referenced property, submitted on your behalf by Grady Consulting LLC, dated May 1, 2012, last revised on May 22, 2012 and received June 5, 2012. The design has been approved for use in the construction of a replacement onsite septic system for a 4-bedroom design. This plan is generally good for 3-years from the date of approval however as this is for a repair system this is reduced to 2- years. During this time, a licensed septic system installer must obtain a permit and complete this work, and a Certificate of Compliance be endorsed by the installer, designer and the Town of North Andover. In the event an imminent health problem such as sewage backup into the dwelling is occurring, the North Andover Board of Health may reduce the time period for which this plan is valid. This approval is also subject to the following conditions: 1. If site conditions are found in the field to be different from those indicated on the design plan and/or soil evaluation, the originally issued Disposal System Construction Permit is void, installation shall stop, and the applicant shall reapply for a new Disposal Systems Construction Permit (3 10 CMR 15.020(1)). 2. It is the responsibility of the applicant and/or the applicant's septic system designer, septic system installer or other representative to ensure that all other state and Page 1 of 2 North Andover Health Department, 1600 Osgood Street, Building 20, Suite 2-36, North Andover, MA 01845 Phone: 978.688.9540 fax: 9 78.688.8476 1476 Salem Sheet June 15, 2012 municipal requirements are met. These may include review by the Conservation Commission,Zoning Board, Planning Board, Building Inspector, Plumbing Inspector and/or Electrical Inspector. The issuance of a Disposal System Construction Permit shall not construe and/or imply compliance with any of the aforementioned requirements. Your effort to provide a properly functioning septic system for your dwelling is greatly appreciated. The Health Department may be reached at 978-688-9540 with any questions you might have. Sine ely, S sawyer, S ublic ealth Dire for cc: Richard Grady, Grady Consulting file Page 2 of 2 North Andover Health Department, 1600 Osgood Street, Building 20, Suite 2-36, North Andover, MA 01845 Phone: 978.688.9540 Fax: 978.688.8476