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Home My WebLink AboutMiscellaneous - 415 BOXFORD STREET 11/19/2015 (3) Town of North over — Septic System - AS-BUILT CHECKLIST 1) All changes to the design plan have been reflected and noted on the as-built plan 2) "I/As-built plan has a suitable scale; (1 inch = 40 feet or fewer for plot plans) 3) -Street Address,Assessor's Map and Lot Number 4) Lot Lines and Location of Dwellings served by the system 5) Locations,Elevations and Dimensions of As-built system components,including reserve (if applicable) 6) Ties to all tank openings,d-box,and leach area from dwelling or Permanent Structure Setback distances are shown on the as-built plan from system components to: Subsurface,interceptor&foundation drains Catch basins Property lines Dwellings or other structures V'Private water supply or irrigation wells Watercourses or wetlands 8) Locations of Wells,Drains,Wetland Resource Areas within 150 feet of system 9) Location of water,' as,electric lines,cable,control panel (if applicable) 10) Location of Structures within 6 Inches of Finished Grade 11) Original Stamp&Signature 12) Location and holder of any easements which could impact the system 13) impervious Areas;Driveways,etc 14) North Arrow 15) Location &Elevation of Benchmark used 16) ti STATEMENT ON PLAN (NA 5.3) a. "I certify the locations, elevations, ties, cover material;exposed component covers etc., shown on this as-built substantially agree with the approved plan and have determined that the break out elevations,if applicable,have been inet. Signature of Designer Date b. -"If a STUCTURAL WALL ISPRESEAT(NA 4.9)a Letter or statement on the as-built indicatinz the wall- was or was not constructed in accordance with the intended design and an V jjja1jjjf,qCtjjr0r`s specifications." Signature of Designer Date Revised 3/17/15 i „I I 2n1�PA 1 0 rA � n,v r' n unr w r ni, , r n ° r 3 01 %m�','i gi o i r err / y r r n r i Y; Y r r ,�,� 54�,�y'� to �%� �/,,� r iJ/ii /�r'��Y �r �+�y i��' rr�i%1�✓/ ��/ �r I V, /RAi r North Andover Health Department Community and Economic Development Division ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES LOCATION INFORMATION ADDRESS: 415 Boxford St. MAP: 105C LOT: 10 INSTALLER: Peter Breen DESIGNER: Ben Osgood Jr. PLAN DATE: 9/24/15, rev 10/19/15 BOH APPROVAL DATE ON PLAN: 10/28/15 INSPECTIONS TANK INSPECTION: DATE OF BED BOTTOM INSPECTION: 11/12/15 DATE OF FINAL CONSTRUCTION INSPECTION: 11/16/15 DATE OF FINAL GRADE INSPECTIONA 1/18/15 SITE CONDITIONS • Contractor reports any changes to design plan • Existing septic tank properly abandoned ❑ Internal plumbing all to one building sewer ® Topography not appreciably altered Comments: SEPTIC TANK ❑ Building sewer in continuous grade, on compacted firm base ❑ Cleanouts per plan ❑ Bottom of tank hole has 6" stone base ❑ Weep hole plugged ❑ 1500 gallon tank has been installed H-10 loading ❑ Monolithic tank construction ❑ Water tightness of tank has been achieved by visual testing ❑ Inlet tee installed, centered under access port Outlet tee installed, centered under access port (effluent filter) ❑ inch cover to within 6" of finish grade installed over one access port ❑ Hydraulic cement around inlet & outlet Comments: 11/16/15 - Existing tank being re-used, could not examine. Needs riser to grade over effluent filter PUMP CHAMBER ❑ Bottom of tank hole has 6" stone base ❑ Weep hole plugged ❑ 1500 gallon Pump Chamber installed ❑ H-10 loading ❑ Monolithic tank construction ❑ Inlet tee installed, centered under access port F-1 Pump(s) installed on stable base Z Alarm float working ❑ Pump On/Off floats working ❑ Separate on/off floats ❑ Drain hole in pressure line ❑ cover at final grade installed over pump access port ❑ Water tightness of tank has been achieved by testing ❑ Hydraulic cement around inlet & outlet Comments: 11/16/15 - Existing tank being re-used, could not examine. Needs riser to grade over pump. 2 of 3 floats not connected to tether, need to be re- mounted. Alarm float tested and found to operate the alarm on panel. Pipe exiting tank had penetration sealed with cement CONTROLPANEL ❑ Alarm & Pump are on separate circuits Z Alarm sounds when float is tripped ❑ Location of control panel: basement ❑ Alarm signal located inside: basement Comments: DISTRIBUTION-BOX Z Installed on stable stone base Z H-20 D-Box • Inlet tee (if pumped or >0.08'/foot) • Hydraulic cement around inlet & outlets M Observed even distribution Z Speed levelers provided (not required) Z Schedule 40 PVC Pipe I Comments: 11/16/15 —When pump operates, small amount of eff luent comes out top of box. Box needs risers to within 6" of finished grade. SOIL ABSORPTION SYSTEM (General) X Bottom of SAS excavated down to C soil layer, as provided on plan X Size of SAS excavated as per plan ® Title 5 sand installed, if specified on plan ❑ 40 Mil HDPE barrier installed ® Laterals installed and ends connected to header (and vented if impervious material above) ® Elevations of laterals and chambers installed as on approved plan ❑ Retaining wall (boulder/ concrete /timber/ block) ❑ Final cover as per plan Comments: 56Lx20W with overdig. 7'9" depth, 93"deep. NOTE: a sieve analysis was performed on this sight. Sand was NOT found to be T-5 sand. All sand was removed and replaced by C-33 sand. SOIL ABSORPTION SYSTEM (Gravel-less Chambers) ❑ Brand and Model of Chamber: Standard Quick 4 Infiltrator Chambers ❑ Number of chambers per row: 11 ❑ Number of rows (trenches): 3 { Comments: Total Chambers = 33 FINAL GRADE X Loamed X Seeded X Cover per plan Comments: I DOCUMENTS NEEDED [/ Certification of Installation Form submitted j By engineer and signed and dated by [,/,Engineer and installer As-Built Plan BM = 100.00 HR = 2.01 HI = 102.01 SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark Distribution Box IN 4.53 97.31 97.19 Distribution Box OUT 4.60 97.08 97.02 Lateral 1 TOP 4.84 97.17 97.25 Lateral 1 INVERT 4.84 96.84 96.92 Lateral 2 TOP 4.88 97.13 97.25 Lateral 2 INVERT 4.84 96.84 96.92 Lateral 3 TOP 4.80 97.21 97.25 Lateral 3 INVERT 4.80 96.88 96.92 CRITICAL SETBACK DISTANCES Mark those distances checked in the field against the design plan and regulatory setback Tank SAS Sewer ® Property line 10 10 -- ® Cellar wall 10 20 -- ® Inground pool 10 20 ® Slab foundation 10 10 -- ® Deck, on footings, etc 5 10 -- ® Waterline 10 10 101 ® Private drinking well 75 1002 50 I Suction line 222(2) 2 100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance(NA 5.02). i ® Irrigation well 75 100 ® Surface Water 25 50 ® Bordering Vegetated Wetland , Salt Marsh, Inland/Coastal Banlc3 75 100 ® Wetlands bordering surface water supply or trib. (in Watershed) 150 150 ® Trib. to surface water supply 325 325 ® Public well 400 400 ® Interim Wellhead Prot. Area Reservoirs 400 400 ® Drains (wat. supply/trib.) 50 100 ® Drains (intercept g.w.) 25 50 ® Drains (Other) Foundation 10(5) 20(10) ® Drywells 20 25 3 As defined in 310 CMR 10.55, 10.32, 10.54,and 10.30,respectively,pursuant to 15.211(3), also by NA wetland bylaws i BM = HR = HI SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark Building Sewer OUT Septic Tank IN Septic Tank OUT Pump Chamber IN Pump Chamber OUT Distribution Box IN Distribution Box OUT Lateral 1 TOP Lateral 1 INVERT Lateral 2 TOP Lateral 2 INVERT Lateral 3 TOP Lateral 3 INVERT Lateral 4 TOP Lateral 4 INVERT Lateral 5 TOP Lateral 5 INVERT Lateral 6 TOP Lateral 6 INVERT i Top of Chamber Bottom of Bed/Chamber 1 1 SKETCH PLAN i i i CRITICAL SETBACK DISTANCES Mark those distances checked in the field against the design plan and regulatory setback Tank SAS Sewer M Property line 10 10 -- M Cellar wall 10 20 -- M Inground pool 10 20 -- M Slab foundation 10 10 -- ® Deck, on footings, etc 5 10 -- ® Waterline 10 10 101 M Private drinking well 75 1002 50 M Irrigation well 75 100 ® Surface Water 25 50 M Bordering Vegetated Wetland , Salt Marsh, Inland/Coastal Bank 3 75 100 M Wetlands bordering surface water supply or trib. (in Watershed) 150 150 ® Trib. to surface water supply 325 325 ® Public well 400 400 M Interim Wellhead Prot. Area M Reservoirs 400 400 M Drains (wat. supply/trib.) 50 100 ® Drains (intercept g.w.) 25 50 M Drains (Other)Foundation 10(5) 20(10) ® Drywells 20 25 1 Suction line 222(2) 2 100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance(NA 5.02). 3 As defined in 310 CMR 10.55, 10.32, 10.54,and 10.30,respectively,pursuant to 15.211(3),also by NA wetland bylaws i I Grant, Michele I From: Benjamin Osgood <bosgoodpe @gmail.com> Sent: Tuesday, November 17, 2015 9:12 AM To; Dan Ottenheimer Cc: Grant, Michele Subject: Re:415 Boxford Street Good Morning Dan, In regards to items 1, 2, and 3 1 pointed these out to Peter at my inspection and he said he would have it done for Monday. Apparently he did not. I had previously spoken to Peter about the floats and told him that they should match the original design for the depth of pumping and depth to alarm. I instructed him to set the floats as follows: I Off Float @ 9" above the bottom of the pump chamber On Float at 15" above the bottom of the pump chamber Alarm Float @ 17" above the bottom of the pump chamber These elevations are consistent with the original design in terms of providing 4 doses per day based upon design flow and at least a 1 day emergency storage above the alarm float. If you need any additional information give me a call on my cell at 978-435-1324 or feel free to email. ben On Tue,Nov 17, 2015 at 7:23 AM, Dan Ottenheimer<danolcr7millrivercotrsultiii .com>wrote: Michele, inspection completed at this address yesterday afternoon. A few items will need to be examined at a subsequent inspection. I will get a formal report out to you shortly. Ben,the item#4 involves you so I am including you on this email. Items outstanding: 1. Septic tank needs riser to finished grade over effluent filter 2. Pump tank needs riser to finished grade over pump 3. Distribution box needs risers to within 6" of finished grade. Also needs to have pump run to demonstrate the box and riser setup does not leak effluent as it currently does out of the top of the box 1 4. Floats inside pump tank are the existing ones which are being re-used. Problem is that two of the three floats have come undone from the original mounting mechanism and are simply floating untethered in the effluent. This is obviously not acceptable and a new float attachment configuration will need to be developed and implemented. Title 5 requires the designer to specify the float settings at each location so we will need something in writing (schematic preferred but not required) to describe the float settings that are desired to be implemented. The installer was instructed that the remaining wire with a metal band holding the float to the pump mast was to be removed, and the floats will need to be secured to a separate float mast. He was unsure about this concept, and specifically how to attach floats to a mast, so it might be prudent for the designer to provide verbal or schematic guidance to the installer in this instance, 5. Once floats are re-established, the pump needs to be run to assure proper operation. I did confirm the alarm is properly functioning. Dan Mill Rixer consulting + r „u •er rat,; f^: ti ri ,eirtie r +.k {aJrea� °.f•au Daniel Ottenheimer, President Mill River Consulting,Inc. 6 Sargent Street Gloucester, MA 01930-2719 978-282-0014 x 802 www.millriverconsultin x.com dano(ii),millriverconsultiia g.coiii Member: Massachusetts Association of Onsite Wastewater Professionals, Massachusetts Environmental Health Association, Cape Ann Chamber of Commerce, New England Water Environment Association 2