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Home My WebLink AboutSeptic - Full Repair - Correspondence - 851 JOHNSON STREET 11/30/2021 NORTH ANDOVER Massachusetts Toni Wolfenden <twolfenden@northandoverma.gov> 851 Johnson Street approval 1 message Daniel Ottenheimer<dano@millriverconsulting.com> Tue, Nov 30, 2021 at 11:39 AM To: 'Brian Lag rasse (blagrasse@north and overma.gov)" <b lag rasse@northandoverma.gov>, Stephen Casey <scasey@northandoverma.gov>, "Toni Wolfenden (twolfenden@northandoverma.gov)" <twolfenden@northandoverma.gov> Brian, Steve, Toni - Attached please find the approval letter which we suggest issuing for the property at 851 Johnson Street. The project is a proposed expansion of the dwelling to add additional rooms (or bedrooms)and thus needs to meet the criteria for new construction under Title 5. There are a number of approval conditions which are provided here that should be put in place both because this is new construction and also because they are proposing the use of the Enviro-septic Wastewater Treatment system. Any questions please do let me know. Dan Daniel Ottenheimer, PE President Al V�M� ILL RIVER CONSULTING Cacative Solutions liar land Developrnrnt 6 Sargent Street Gloucester, MA 01930-2719 Phone: 978-282-0014 ext.802 www.miliriverconsulting.com 851 Johnson Street - Plan Approval 11-30-21.docx 77K Presbynvi* ronmental , Inc . Trai* ni* ng This certifies that Mark Finn Has completed the Presby Environmental, Inc. Enviro-Septic' Certification Course Massachusetts Design & Installation Webinar Class o Other state or municipal licenses may be required. July 17, 2008 DavM W. Yw,13N Date of training David W. Presby President and CEO Certificate No: 6985MAES Presby Environmental, Inc. 7/26/22,4:52 PM Town of North Andover Mail-851 Johnson Street construction inspection NORTH ANDOVER Massachusetts Toni Wolfenden <twolfenden@northandoverma.gov> 851 Johnson Street construction inspection 1 message Daniel Ottenheimer<dano@millriverconsulting.com> Tue, Jul 26, 2022 at 2:59 PM To: "Brian Lagrasse (blagrasse@north andoverma.gov)"<baagrasse@northandoverma.gov>, Stephen Casey <scasey@northandoverma.gov>, "Toni Wolfenden (twolfenden@northandoverma.gov)" <twolfenden@northandoverma.gov> A Few items remain outstanding on this: • Engineer is reported to have set a new benchmark, need a note from them saying that is what they did. • The vent pipe has weep holes in it. Need something showing this is allowed by Enviro-septic. • The house vent has to be determined by the installer if it is acceptable to be considered as a high vent for use with the Enviro-septic system. My report of today's inspection is attached. All of this was discussed with the septic system installer. Please let me know if you have any questions or if I can help with the above. Dan Daniel Ottenheimer, PE President t MILL RIVER CONSULTING Orative Solutions for iattd Ik%A0jyment 6 Sargent Street Gloucester, MA 01930-2719 Phone: 978-282-0014 ext.802 https://mail.google.com/mail/u/0/?ik=aOc6f4e4cf&view=pt&search=all&permthid=thread-f%3Al 739442851184256843&simpl=msg-f%3A173944285118... 1/2 7/26/22,4:52 PM Town of North Andover Mail-851 Johnson Street construction inspection www.miliriverconsulting.com Construction Notes -851 Johnson St.docx 64K https://mail.google.com/mai I/u/0/?ik=aOc6f4e4cf&view=pt&search=all&permthid=thread-f%3Al 739442851184256843&simpl=msg-f%3A173944285118... 212 The Morin-Cameron ALAW 3 � November 18, 2021 To HE OF SORIH R p,�THDEPA WENT Mr. Stephen Casey Jr. Health Inspector 120 Main Street North Andover, MA 01845 Re: Subsurface Sewage Disposal System Plan — 851 Johnson Street (Map 107A, Lot 62) Dear Mr. Casey: We are in receipt of your review of the septic design for the above referenced property dated October 28, 2021. Please find enclosed the following: • 3 sets of the revised Sanitary Disposal System design On behalf of Derek Delaney, The Morin-Cameron Group, Inc. has prepared the following responses to your comments. For your convenience the response comments are numbered in the same order and correlate to the numbered comments in your letter: 1. The plan states "Note: All Pipe To Be 4" P.V.C. (SCH. 40) Unless Noted" on the system profile (see Sheet 2 of 2). 2. The proposed addition will be constructed on a slab foundation, therefore a foundation drain is not required or proposed. 3. The estimated seasonal high water table (ESHWT)was calculated using a gradient between Test Pit 21-1 and Test Pit 21-2. Cross section A-A' has been added to sheet 2 of 2 to illustrate a minimum 4' separation between the bottom of the soil absorption system and the ESHWT. A column showing the ESHWT calculated based on the gradient was also added to the "Presby Data" table on sheet 2 of 2. The table has been revised to maintain a 4' or greater separation from the bottom of the system to ESHWT. A gradient between test pits 21-1 and 21-4 was also analyzed but was less conservative than the assumed gradient between 21-1 and 21-2. As a conservative approach the gradient between 21-1 and 21-2 was used for the design. 4. A swale along the property line has been added and noted on the plan view (see Sheet 1 of 2). CIVIL ENGINEERS • LAND SURVEYORS • ENVIRONMENTAL CONSULTANTS • LAND USE PLANNERS 66 Elm Street, Danvers, MA 01923 978.777.8586 Providing Professional Services Since 1978 www.morincameron.com Mr. Stephen Casey Jr. November 18, 2021 Page 2 5. The area for conventional primary and conventional reserve leaching facilities have been bolded on the plan view. The field dimensions have been added in the callouts (see sheet 1 of 2). 6. A note was added to the plan view to call for the roof stack to be utilized as the high vent and note #21 was added to the general notes (see sheet 1 of 2). 7. General Note#5 was revised to include "(SEE SLOPING VENT DETAIL)" and a sloping vent detail has been added to sheet 1 of 2. A. The plan clearly shows the location of the proposed conventional primary and reserve leach beds. We do not believe a "prof plan" is needed or required. In addition to the revisions described above, a three-foot sand bed extension has been added to the PRESBY field and associated reserve system. This extension is required because the slope of the PRESBY field is greater than 10%.The calculations and plan details have been revised to reflect the sand bed extension which has been designed in accordance with the PRESBY design manual. We trust these responses satisfy your questions and concerns. If you have any additional questions, please do not hesitate to contact our office. Sincerely, THE MORIN-CAMERON GROUP, INC. John Morin, PE President JMM/kmm Attachments cc: Derek Delaney X:\Delaney,Derek\4085\Docs\Board of Health\Response comments.dou